Resource determination for phase tracking reference signal reception / transmission

Abstract

A wireless device receives one or more configuration parameters indicating sub-band full-duplex (SBFD) symbols and frequency domain locations and bandwidths of one or more downlink sub-bands of the SBFD symbols. The wireless device receives a downlink control information (DCI) indicating a plurality of resource blocks (RBs) scheduled for a physical downlink shared channel (PDSCH) reception in one or more SBFD symbols of the SBFD symbols. The wireless device determines one or more RBs, of the plurality of RBs, that fully overlap in a frequency domain with the one or more downlink sub-bands and, based on the one or more RBs, a frequency density of a downlink phase tracking reference signal (PTRS). The wireless device receives, in the one or more SBFD symbols, the PDSCH reception and the downlink PTRS using the frequency density. The wireless device transmits a hybrid automatic repeat request (HARQ) acknowledgment information for the PDSCH reception.

Description

Docket No.: 25-1005PCTTITLEResource Determination for Phase Tracking Reference Signal Reception / Transmission CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U. S. Provisional Application No. 63 / 754,105, filed February 5, 2025, which is hereby incorporated by reference in its entirety.BRIEF DESCRIPTION OF THE DRAWINGS

[0002] Examples of several of the various embodiments of the present disclosure are described herein with reference to the drawings.

[0003] FIG. 1A and FIG. 1B illustrate example mobile communication networks in which embodiments of the present disclosure may be implemented.

[0004] FIG. 2A and FIG. 2B respectively illustrate a New Radio (NR) user plane and control plane protocol stack.

[0005] FIG. 3 illustrates an example of services provided between protocol layers of the NR user plane protocol stack of FIG. 2A.

[0006] FIG. 4A illustrates an example downlink data flow through the NR user plane protocol stack of FIG.2A.

[0007] FIG. 4B illustrates an example format of a MAC subheader in a MAC PDU.

[0008] FIG. 5A and FIG. 5B respectively illustrate a mapping between logical channels, transport channels, and physical channels for the downlink and uplink.

[0009] FIG. 6 is an example diagram showing RRC state transitions of a UE.

[0010] FIG. 7 illustrates an example configuration of an NR frame into which OFDM symbols are grouped.

[0011] FIG. 8 illustrates an example configuration of a slot in the time and frequency domain for an NR carrier.

[0012] FIG. 9 illustrates an example of bandwidth adaptation using three configured BWPs for an NR carrier.

[0013] FIG. 10A illustrates three carrier aggregation configurations with two component carriers.

[0014] FIG. 10B illustrates an example of how aggregated cells may be configured into one or more PUCCH groups.

[0015] FIG. 11A illustrates an example of an SS / PBCH block structure and location.

[0016] FIG. 11B illustrates an example of CSI-RSs that are mapped in the time and frequency domains.

[0017] FIG. 12A and FIG. 12B respectively illustrate examples of three downlink and uplink beam management procedures.Docket No.: 25-1005PCT

[0018] FIG. 13A, FIG. 13B, and FIG. 13C respectively illustrate a four-step contention-based random access procedure, a two-step contention-free random access procedure, and another two-step random access procedure.

[0019] FIG. 14A illustrates an example of CORESET configurations for a bandwidth part.

[0020] FIG. 14B illustrates an example of a CCE-to-REG mapping for DCI transmission on a CORESET and PDCCH processing.

[0021] FIG. 15 illustrates an example of a wireless device in communication with a base station.

[0022] FIG. 16A, FIG. 16B, FIG. 16C, and FIG. 16D illustrate example structures for uplink and downlink transmission.

[0023] FIG. 17 illustrates an example of UL / DL TDD configuration as per an aspect of an embodiment of the present disclosure.

[0024] FIG. 18 illustrates an aspect of an example slot format in a TDD carrier per an aspect of the present disclosure.

[0025] FIG. 19A, FIG. 19B, and FIG. 19C illustrate examples of PDSCH receptions per aspects of some embodiments of the present disclosure.

[0026] FIG. 20A, FIG. 20B., and FIG. 20C illustrate examples of PUSCH transmissions per aspects some embodiments of the present disclosure.

[0027] FIG. 21A and FIG. 21 B illustrate examples of PT-RS configuration parameters per aspects of some embodiments of the present disclosure.

[0028] FIG. 22A illustrates examples of PTRS transmission (in UL) and PTRS reception (in DL) per aspects of some embodiments of the present disclosure.

[0029] FIG. 22B illustrates example values for DL time density of DL PT-RS as a function of a scheduled MCS for the PDSCH reception per aspects of some embodiments of the present disclosure.

[0030] FIG. 22C illustrates examples of DL frequency density of DL PT-RS as a function of the scheduled bandwidth of the PDSCH reception (NRB) per aspects of some embodiments of the present disclosure.

[0031] FIG. 22D illustrates an example PT-RS group pattern as a function of scheduled bandwidth per aspects of some embodiments of the present disclosure.

[0032] FIG. 23A illustrates an example of PUSCH transmission when a transform precoding is enabled comprising UL PTRS transmission as per an aspect of an embodiment of the present disclosure.

[0033] FIG. 23B illustrates an example of PDSCH reception comprising DL PTRS transmission as per an aspect of an embodiment of the present disclosure.

[0034] FIG. 24 illustrates an example of UE-capabilities for UL / DL transmissions / receptions per an aspect of an example embodiment according to the present disclosure.Docket No.: 25-1005PCT

[0035] FIG. 25 illustrates an example of sub-band full-duplex (SBFD) operation as per an aspect of an embodiment of the present disclosure.

[0036] FIG. 26A illustrates an example of PDSCH receptions in SBFD slots / symbols per an aspect of an embodiment of the present disclosure.

[0037] FIG. 26B illustrates an example of PUSCH transmissions in SBFD slots / symbols per an aspect of an example embodiment according to the present disclosure.

[0038] FIG. 27A and FIG. 27B illustrate examples of PDSCH receptions in SBFD slots / symbols per aspects of embodiments of the present disclosure.

[0039] FIG. 28A and FIG. 28B illustrate examples of PDSCH receptions in SBFD slots / symbols per aspects of embodiments of the present disclosure.

[0040] FIG. 29A illustrates an example of PDSCH reception in SBFD as per an aspect of an embodiment of the present disclosure.

[0041] FIG. 29B illustrates an example of capability messages for PTRS in DL / UL in SBFD slots / symbols per aspects of embodiments of the present disclosure.

[0042] FIG. 29C illustrates an example of capability messages for supported modulation for DL / UL receptions / transmission in SBFD slots / symbols per aspects of embodiments of the present disclosure.

[0043] FIG. 30A illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0044] FIG. 30B illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0045] FIG. 31 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0046] FIG. 32 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0047] FIG. 33 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0048] FIG. 34 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0049] FIG. 35 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0050] FIG. 36 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0051] FIG. 37 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.Docket No.: 25-1005PCT

[0052] FIG. 38A illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0053] FIG. 38B illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0054] FIG. 38C illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0055] FIG. 39A illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0056] FIG. 39B illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0057] FIG. 39C illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0058] FIG. 40 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0059] FIG. 41 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0060] FIG. 42 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0061] FIG. 43 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0062] FIG. 44 illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0063] FIG. 45A illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0064] FIG. 45B illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0065] FIG. 45C illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0066] FIG. 46A illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0067] FIG. 46B illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.

[0068] FIG. 46C illustrates an example flowchart of a method for receiving DL PTRS as per an aspect of an embodiment of the present disclosure.Docket No.: 25-1005PCTDETAILED DESCRIPTION

[0069] In the present disclosure, various embodiments are presented as examples of how the disclosed techniques may be implemented and / or how the disclosed techniques may be practiced in environments and scenarios. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the scope. In fact, after reading the description, it will be apparent to one skilled in the relevant art how to implement alternative embodiments. The present embodiments should not be limited by any of the described exemplary embodiments. The embodiments of the present disclosure will be described with reference to the accompanying drawings. Limitations, features, and / or elements from the disclosed example embodiments may be combined to create further embodiments within the scope of the disclosure. Any figures which highlight the functionality and advantages, are presented for example purposes only. The disclosed architecture is sufficiently flexible and configurable, such that it may be utilized in ways other than that shown. For example, the actions listed in any flowchart may be re-ordered or only optionally used in some embodiments.

[0070] Embodiments may be configured to operate as needed. The disclosed mechanism may be performed when certain criteria are met, for example, in a wireless device, a base station, a radio environment, a network, a combination of the above, and / or the like. Example criteria may be based, at least in part, on for example, wireless device or network node configurations, traffic load, initial system set up, packet sizes, traffic characteristics, a combination of the above, and / or the like. When the one or more criteria are met, various example embodiments may be applied. Therefore, it may be possible to implement example embodiments that selectively implement disclosed protocols.

[0071] A base station may communicate with a mix of wireless devices. Wireless devices and / or base stations may support multiple technologies, and / or multiple releases of the same technology. Wireless devices may have some specific capability(ies) depending on wireless device category and / or capability(ies). When this disclosure refers to a base station communicating with a plurality of wireless devices, this disclosure may refer to a subset of the total wireless devices in a coverage area. This disclosure may refer to, for example, a plurality of wireless devices of a given LTE or 5G release with a given capability and in a given sector of the base station. The plurality of wireless devices in this disclosure may refer to a selected plurality of wireless devices, and / or a subset of total wireless devices in a coverage area which perform according to disclosed methods, and / or the like. There may be a plurality of base stations or a plurality of wireless devices in a coverage area that may not comply with the disclosed methods, for example, those wireless devices or base stations may perform based on older releases of LTE or 5G technology.

[0072] In this disclosure, "a” and “an” and similar phrases are to be interpreted as “at least one” and “one or more.” Similarly, any term that ends with the suffix “(s)” is to be interpreted as “at least one” and “one orDocket No.: 25-1005PCTmore.” In this disclosure, the term “may” is to be interpreted as “may, for example.” In other words, the term “may” is indicative that the phrase following the term “may” is an example of one of a multitude of suitable possibilities that may, or may not, be employed by one or more of the various embodiments. The terms “comprises” and “consists of’, as used herein, enumerate one or more components of the element being described. The term “comprises” is interchangeable with “includes” and does not exclude unenumerated components from being included in the element being described. By contrast, “consists of’ provides a complete enumeration of the one or more components of the element being described. The term “based on”, as used herein, should be interpreted as “based at least in part on” rather than, for example, “based solely on”. The term “and / or” as used herein represents any possible combination of enumerated elements. For example, “A, B, and / or C” may represent A; B; C; A and B; A and C; B and C; or A, B, and C.

[0073] If A and B are sets and every element of A is an element of B, A is called a subset of B. In this specification, only non-empty sets and subsets are considered. For example, possible subsets of B = {cell 1, cell2} are: {celH }, {cell2}, and {celH, cell2}. The phrase “based on" (or equally “based at least on”) is indicative that the phrase following the term “based on” is an example of one of a multitude of suitable possibilities that may, or may not, be employed to one or more of the various embodiments. The phrase “in response to” (or equally “in response at least to”) is indicative that the phrase following the phrase “in response to” is an example of one of a multitude of suitable possibilities that may, or may not, be employed to one or more of the various embodiments. The phrase “depending on” (or equally “depending at least to”) is indicative that the phrase following the phrase “depending on” is an example of one of a multitude of suitable possibilities that may, or may not, be employed to one or more of the various embodiments. The phrase “employing / using” (or equally “employing / using at least”) is indicative that the phrase following the phrase “employing / using” is an example of one of a multitude of suitable possibilities that may, or may not, be employed to one or more of the various embodiments.

[0074] The term configured may relate to the capacity of a device whether the device is in an operational or non-operational state. Configured may refer to specific settings in a device that affect or implement the operational characteristics of the device whether the device is in an operational or non-operational state. In other words, the hardware, software, firmware, registers, memory values, and / or the like may be “configured” within a device, whether the device is in an operational or nonoperational state, to provide the device with specific characteristics. Terms such as “a control message to cause in a device” may mean that a control message has parameters that may be used to configure specific characteristics or may be used to implement certain actions in the device, whether the device is in an operational or non-operational state.

[0075] In this disclosure, parameters (or equally called, fields, or Information elements: IBs) may comprise one or more information objects, and an information object may comprise one or more other objects. For example, if parameter (IE) N comprises parameter (IE) M, and parameter (IE) M comprises parameter (IE)Docket No.: 25-1005PCTK, and parameter (IE) K comprises parameter (information element) J. Then, for example, N comprises K, and N comprises J. In an example embodiment, when one or more messages comprise a plurality of parameters, it implies that a parameter in the plurality of parameters is in at least one of the one or more messages, but does not have to be in each of the one or more messages.

[0076] Many features presented are described as being optional through the use of “may” or the use of parentheses. For the sake of brevity and legibility, the present disclosure does not explicitly recite each and every permutation that may be obtained by choosing from the set of optional features. The present disclosure is to be interpreted as explicitly disclosing all such permutations. For example, a system described as having three optional features may be embodied in seven ways, namely with just one of the three possible features, with any two of the three possible features or with three of the three possible features.

[0077] Many of the elements described in the disclosed embodiments may be implemented as modules. A module is defined here as an element that performs a defined function and has a defined interface to other elements. The modules described in this disclosure may be implemented in hardware, software in combination with hardware, firmware, wetware (e.g. hardware with a biological element) or a combination thereof, which may be behaviorally equivalent. For example, modules may be implemented as a software routine written in a computer language configured to be executed by a hardware machine (such as C, C++, Fortran, Java, Basic, MATLAB or the like) or a modeling / simulation program such as Simulink, Stateflow, GNU Octave, or LabVIEWMathScript. It may be possible to implement modules using physical hardware that incorporates discrete or programmable analog, digital and / or quantum hardware. Examples of programmable hardware comprise: computers, microcontrollers, microprocessors, application-specific integrated circuits (ASICs); field programmable gate arrays (FPGAs); and complex programmable logic devices (CPLDs). Computers, microcontrollers and microprocessors are programmed using languages such as assembly, C, C++ or the like. FPGAs, ASICs and CPLDs are often programmed using hardware description languages (HDL) such as VHSIC hardware description language (VHDL) or Verilog that configure connections between internal hardware modules with lesser functionality on a programmable device. The mentioned technologies are often used in combination to achieve the result of a functional module.

[0078] FIG. 1 A illustrates an example of a mobile communication network 100 in which embodiments of the present disclosure may be implemented. The mobile communication network 100 may be, for example, a public land mobile network (PLMN) run by a network operator. As illustrated in FIG. 1A, the mobile communication network 100 includes a core network (CN) 102, a radio access network (RAN) 104, and a wireless device 106.Docket No.: 25-1005PCT

[0079] The CN 102 may provide the wireless device 106 with an interface to one or more data networks (DNs), such as public DNs (e.g., the Internet), private DNs, and / or intra-operator DNs. As part of the interface functionality, the CN 102 may set up end-to-end connections between the wireless device 106 and the one or more DNs, authenticate the wireless device 106, and provide charging functionality.

[0080] The RAN 104 may connect the CN 102 to the wireless device 106 through radio communications over an air interface. As part of the radio communications, the RAN 104 may provide scheduling, radio resource management, and retransmission protocols. The communication direction from the RAN 104 to the wireless device 106 over the air interface is known as the downlink and the communication direction from the wireless device 106 to the RAN 104 over the air interface is known as the uplink. Downlink transmissions may be separated from uplink transmissions using frequency division duplexing (FDD), timedivision duplexing (TDD), and / or some combination of the two duplexing techniques.

[0081] The term wireless device may be used throughout this disclosure to refer to and encompass any mobile device or fixed (non-mobile) device for which wireless communication is needed or usable. For example, a wireless device may be a telephone, smart phone, tablet, computer, laptop, sensor, meter, wearable device, Internet of Things (loT) device, vehicle roadside unit (RSU), relay node, automobile, and / or any combination thereof. The term wireless device encompasses other terminology, including user equipment (UE), user terminal (UT), access terminal (AT), mobile station, handset, wireless transmit and receive unit (WTRU), and / or wireless communication device.

[0082] The RAN 104 may include one or more base stations (not shown). The term base station may be used throughout this disclosure to refer to and encompass a Node B (associated with UMTS and / or 3G standards), an Evolved Node B (eNB, associated with E-UTRA and / or 4G standards), a remote radio head (RRH), a baseband processing unit coupled to one or more RRHs, a repeater node or relay node used to extend the coverage area of a donor node, a Next Generation Evolved Node B (ng-eNB), a Generation Node B (gNB, associated with NR and / or 5G standards), an access point (AP, associated with, for example, Wi-Fi or any other suitable wireless communication standard), and / or any combination thereof. A base station may comprise at least one gNB Central Unit (gNB-CU) and at least one a gNB Distributed Unit (gNB-DU).

[0083] A base station included in the RAN 104 may include one or more sets of antennas for communicating with the wireless device 106 over the air interface. For example, one or more of the base stations may include three sets of antennas to respectively control three cells (or sectors). The size of a cell may be determined by a range at which a receiver (e.g., a base station receiver) can successfully receive the transmissions from a transmitter (e.g., a wireless device transmitter) operating in the cell. Together, the cells of the base stations may provide radio coverage to the wireless device 106 over a wide geographic area to support wireless device mobility.Docket No.: 25-1005PCT

[0084] In addition to three-sector sites, other implementations of base stations are possible. For example, one or more of the base stations in the RAN 104 may be implemented as a sectored site with more or less than three sectors. One or more of the base stations in the RAN 104 may be implemented as an access point, as a baseband processing unit coupled to several remote radio heads (RRHs), and / or as a repeater or relay node used to extend the coverage area of a donor node. A baseband processing unit coupled to RRHs may be part of a centralized or cloud RAN architecture, where the baseband processing unit may be either centralized in a pool of baseband processing units or virtualized. A repeater node may amplify and rebroadcast a radio signal received from a donor node. A relay node may perform the same / similar functions as a repeater node but may decode the radio signal received from the donor node to remove noise before amplifying and rebroadcasting the radio signal.

[0085] The RAN 104 may be deployed as a homogenous network of macrocell base stations that have similar antenna patterns and similar high-level transmit powers. The RAN 104 may be deployed as a heterogeneous network. In heterogeneous networks, small cell base stations may be used to provide small coverage areas, for example, coverage areas that overlap with the comparatively larger coverage areas provided by macrocell base stations The small coverage areas may be provided in areas with high data traffic (or so-called “hotspots”) or in areas with weak macrocell coverage. Examples of small cell base stations include, in order of decreasing coverage area, microcell base stations, picocell base stations, and femtocell base stations or home base stations.

[0086] The Third-Generation Partnership Project (3GPP) was formed in 1998 to provide global standardization of specifications for mobile communication networks similar to the mobile communication network 100 in FIG. 1A. To date, 3GPP has produced specifications for three generations of mobile networks: a third generation (3G) network known as Universal Mobile Telecommunications System (UMTS), a fourth generation (4G) network known as Long-Term Evolution (LTE), and a fifth generation (5G) network known as 5G System (5GS). Embodiments of the present disclosure are described with reference to the RAN of a 3GPP 5G network, referred to as next-generation RAN (NG-RAN). Embodiments may be applicable to RANs of other mobile communication networks, such as the RAN 104 in FIG. 1A, the RANs of earlier 3G and 4G networks, and those of future networks yet to be specified (e.g., a 3GPP 6G network). NG-RAN implements 5G radio access technology known as New Radio (NR) and may be provisioned to implement 4G radio access technology or other radio access technologies, including non-3GPP radio access technologies.

[0087] FIG. 1 B illustrates another example mobile communication network 150 in which embodiments of the present disclosure may be implemented. Mobile communication network 150 may be, for example, a PLMN run by a network operator. As illustrated in FIG. 1B, mobile communication network 150 includes a 5G core network (5G-CN) 152, an NG-RAN 154, and UEs 156A and 156B (collectively UEs 156). TheseDocket No.: 25-1005PCTcomponents may be implemented and operate in the same or similar manner as corresponding components described with respect to FIG. 1 A.

[0088] The 5G-CN 152 provides the UEs 156 with an interface to one or more DNs, such as public DNs (e.g., the Internet), private DNs, and / or intra-operator DNs. As part of the interface functionality, the 5G-CN 152 may set up end-to-end connections between the UEs 156 and the one or more DNs, authenticate the UEs 156, and provide charging functionality. Compared to the CN of a 3GPP4G network, the basis of the 5G-CN 152 may be a service-based architecture. This means that the architecture of the nodes making up the 5G-CN 152 may be defined as network functions that offer services via interfaces to other network functions. The network functions of the 5G-CN 152 may be implemented in several ways, including as network elements on dedicated or shared hardware, as software instances running on dedicated or shared hardware, or as virtualized functions instantiated on a platform (e.g., a cloud-based platform).

[0089] As illustrated in FIG. 1B, the 5G-CN 152 includes an Access and Mobility Management Function (AMF) 158A and a User Plane Function (UPF) 158B, which are shown as one component AMF / UPF 158 in FIG. 1 B for ease of illustration. The UPF 158B may serve as a gateway between the NG-RAN 154 and the one or more DNs. The UPF 158B may perform functions such as packet routing and forwarding, packet inspection and user plane policy rule enforcement, traffic usage reporting, uplink classification to support routing of traffic flows to the one or more DNs, quality of service (QoS) handling for the user plane (e.g., packet filtering, gating, uplink / downlink rate enforcement, and uplink traffic verification), downlink packet buffering, and downlink data notification triggering. The UPF 158B may serve as an anchor point for intra- / inter-Radio Access Technology (RAT) mobility, an external protocol (or packet) data unit (PDU) session point of interconnect to the one or more DNs, and / or a branching point to support a multi-homed PDU session. The UEs 156 may be configured to receive services through a PDU session, which is a logical connection between a UE and a DN.

[0090] The AMF 158A may perform functions such as Non-Access Stratum (NAS) signaling termination, NAS signaling security, Access Stratum (AS) security control, inter-CN node signaling for mobility between 3GPP access networks, idle mode UE reachability (e.g., control and execution of paging retransmission), registration area management, intra-system and inter-system mobility support, access authentication, access authorization including checking of roaming rights, mobility management control (subscription and policies), network slicing support, and / or session management function (SMF) selection. NAS may refer to the functionality operating between a CN and a UE, and AS may refer to the functionality operating between the UE and a RAN.

[0091] The 5G-CN 152 may include one or more additional network functions that are not shown in FIG.1 B for the sake of clarity. For example, the 5G-CN 152 may include one or more of a Session Management Function (SMF), an NR Repository Function (NRF), a Policy Control Function (PCF), a Network ExposureDocket No.: 25-1005PCTFunction (NEF), a Unified Data Management (UDM), an Application Function (AF), and / or an Authentication Server Function (AUSF).

[0092] The NG-RAN 154 may connect the 5G-CN 152 to the UEs 156 through radio communications over the air interface. The NG-RAN 154 may include one or more gNBs, illustrated as gNB 160A and gNB 160B (collectively gNBs 160) and / or one or more ng-eNBs, illustrated as ng-eNB 162A and ng-eNB 162B (collectively ng-eNBs 162). The gNBs 160 and ng-eNBs 162 may be more generically referred to as base stations. The gNBs 160 and ng-eNBs 162 may include one or more sets of antennas for communicating with the UEs 156 over an air interface. For example, one or more of the gNBs 160 and / or one or more of the ng-eNBs 162 may include three sets of antennas to respectively control three cells (or sectors).Together, the cells of the gNBs 160 and the ng-eNBs 162 may provide radio coverage to the UEs 156 over a wide geographic area to support UE mobility.

[0093] As shown in FIG. 1B, the gNBs 160 and / or the ng-eNBs 162 may be connected to the 5G-CN 152 by means of an NG interface and to other base stations by an Xn interface. The NG and Xn interfaces may be established using direct physical connections and / or indirect connections over an underlying transport network, such as an internet protocol (IP) transport network. The gNBs 160 and / or the ng-eNBs 162 may be connected to the UEs 156 by means of a Uu interface. For example, as illustrated in FIG. 1B, gNB 160A may be connected to the UE 156A by means of a Uu interface. The NG, Xn, and Uu interfaces are associated with a protocol stack. The protocol stacks associated with the interfaces may be used by the network elements in FIG. 1B to exchange data and signaling messages and may include two planes: a user plane and a control plane. The user plane may handle data of interest to a user. The control plane may handle signaling messages of interest to the network elements.

[0094] The gNBs 160 and / or the ng-eNBs 162 may be connected to one or more AMF / UPF functions of the 5G-CN 152, such as the AMF / UPF 158, by means of one or more NG interfaces. For example, the gNB 160A may be connected to the UPF 158B of the AMF / UPF 158 by means of an NG-User plane (NG-U) interface. The NG-U interface may provide delivery (e.g., non-guaranteed delivery) of user plane PDUs between the gNB 160A and the UPF 158B. The gNB 160A may be connected to the AMF 158A by means of an NG-Control plane (NG-C) interface. The NG-C interface may provide, for example, NG interface management, UE context management, UE mobility management, transport of NAS messages, paging, PDU session management, and configuration transfer and / or warning message transmission.

[0095] The gNBs 160 may provide NR user plane and control plane protocol terminations towards the UEs 156 over the Uu interface. For example, the gNB 160A may provide NR user plane and control plane protocol terminations toward the UE 156A over a Uu interface associated with a first protocol stack. The ng-eNBs 162 may provide Evolved UMTS Terrestrial Radio Access (E-UTRA) user plane and control plane protocol terminations towards the UEs 156 over a Uu interface, where E-UTRA refers to the 3GPP 4GDocket No.: 25-1005PCTradio-access technology. For example, the ng-eNB 162B may provide E-UTRA user plane and control plane protocol terminations towards the UE 156B over a Uu interface associated with a second protocol stack.

[0096] The 5G-CN 152 was described as being configured to handle NR and 4G radio accesses. It will be appreciated by one of ordinary skill in the art that it may be possible for NR to connect to a 4G core network in a mode known as “non-standalone operation.” In non-standalone operation, a 4G core network is used to provide (or at least support) control-plane functionality (e.g., initial access, mobility, and paging). Although only one AMF / UPF 158 is shown in FIG. 1B, one gNB or ng-eNB may be connected to multiple AMF / UPF nodes to provide redundancy and / or to load share across the multiple AMF / UPF nodes.

[0097] As discussed, an interface (e.g., Uu, Xn, and NG interfaces) between the network elements in FIG.1 B may be associated with a protocol stack that the network elements use to exchange data and signaling messages. A protocol stack may include two planes: a user plane and a control plane. The user plane may handle data of interest to a user, and the control plane may handle signaling messages of interest to the network elements.

[0098] FIG. 2A and FIG. 2B respectively illustrate examples of NR user plane and NR control plane protocol stacks for the Uu interface that lies between a UE 210 and a gNB 220. The protocol stacks illustrated in FIG. 2A and FIG. 2B may be the same or similar to those used for the Uu interface between, for example, the UE 156A and the gNB 160A shown in FIG. 1 B.

[0099] FIG. 2A illustrates a NR user plane protocol stack comprising five layers implemented in the UE 210 and the gNB 220. At the bottom of the protocol stack, physical layers (PHYs) 211 and 221 may provide transport services to the higher layers of the protocol stack and may correspond to layer 1 of the Open Systems Interconnection (OSI) model. The next four protocols above PHYs 211 and 221 comprise media access control layers (MACs) 212 and 222, radio link control layers (RLCs) 213 and 223, packet data convergence protocol layers (PDCPs) 214 and 224, and service data application protocol layers (SDAPs) 215 and 225. Together, these four protocols may make up layer 2, or the data link layer, of the OSI model.

[0100] FIG. 3 illustrates an example of services provided between protocol layers of the NR user plane protocol stack. Starting from the top of FIG. 2A and FIG. 3, the SDAPs 215 and 225 may perform QoS flow handling. The UE 210 may receive services through a PDU session, which may be a logical connection between the UE 210 and a DN. The PDU session may have one or more QoS flows. A UPF of a CN (e.g., the UPF 158B) may map IP packets to the one or more QoS flows of the PDU session based on QoS requirements (e.g., in terms of delay, data rate, and / or error rate). The SDAPs 215 and 225 may perform mapping / de-mapping between the one or more QoS flows and one or more data radio bearers. The mapping / de-mapping between the QoS flows and the data radio bearers may be determined by the SDAP 225 at the gNB 220. The SDAP 215 at the UE 210 may be informed of the mapping between the QoS flowsDocket No.: 25-1005PCTand the data radio bearers through reflective mapping or control signaling received from the gNB 220. For reflective mapping, the SDAP 225 at the gNB 220 may mark the downlink packets with a QoS flow indicator (QFI), which may be observed by the SDAP 215 at the UE 210 to determine the mapping / de-mapping between the QoS flows and the data radio bearers.

[0101] The PDCPs 214 and 224 may perform header compression / decompression to reduce the amount of data that needs to be transmitted over the air interface, ciphering / deciphering to prevent unauthorized decoding of data transmitted over the air interface, and integrity protection (to ensure control messages originate from intended sources. The PDCPs 214 and 224 may perform retransmissions of undelivered packets, in-sequence delivery and reordering of packets, and removal of packets received in duplicate due to, for example, an intra-gNB handover. The PDCPs 214 and 224 may perform packet duplication to improve the likelihood of the packet being received and, at the receiver, remove any duplicate packets. Packet duplication may be useful for services that require high reliability.

[0102] Although not shown in FIG. 3, PDCPs 214 and 224 may perform mapping / de-mapping between a split radio bearer and RLC channels in a dual connectivity scenario. Dual connectivity is a technique that allows a UE to connect to two cells or, more generally, two cell groups: a master cell group (MCG) and a secondary cell group (SCG). A split bearer is when a single radio bearer, such as one of the radio bearers provided by the PDCPs 214 and 224 as a service to the SDAPs 215 and 225, is handled by cell groups in dual connectivity. The PDCPs 214 and 224 may map / de-map the split radio bearer between RLC channels belonging to cell groups.

[0103] The RLCs 213 and 223 may perform segmentation, retransmission through Automatic Repeat Request (ARQ), and removal of duplicate data units received from MACs 212 and 222, respectively. The RLCs 213 and 223 may support three transmission modes: transparent mode (TM); unacknowledged mode (UM); and acknowledged mode (AM). Based on the transmission mode an RLC is operating, the RLC may perform one or more of the noted functions. The RLC configuration may be per logical channel with no dependency on numerologies and / or Transmission Time Interval (TTI) durations. As shown in FIG. 3, the RLCs 213 and 223 may provide RLC channels as a service to PDCPs 214 and 224, respectively.

[0104] The MACs 212 and 222 may perform multiplexing / demultiplexing of logical channels and / or mapping between logical channels and transport channels. The multiplexing / demultiplexing may include multiplexing / demultiplexing of data units, belonging to the one or more logical channels, into / from Transport Blocks (TBs) delivered to / from the PHYs 211 and 221. The MAC 222 may be configured to perform scheduling, scheduling information reporting, and priority handling between UEs by means of dynamic scheduling. Scheduling may be performed in the gNB 220 (at the MAC 222) for downlink and uplink. The MACs 212 and 222 may be configured to perform error correction through Hybrid Automatic Repeat Request (HARQ) (e.g., one HARQ entity per carrier in case of Carrier Aggregation (CA)), priority handlingDocket No.: 25-1005PCTbetween logical channels of the UE 210 by means of logical channel prioritization, and / or padding. The MACs 212 and 222 may support one or more numerologies and / or transmission timings. In an example, mapping restrictions in a logical channel prioritization may control which numerology and / or transmission timing a logical channel may use. As shown in FIG. 3, the MACs 212 and 222 may provide logical channels as a service to the RLCs 213 and 223.

[0105] The PHYs 211 and 221 may perform mapping of transport channels to physical channels and digital and analog signal processing functions for sending and receiving information over the air interface. These digital and analog signal processing functions may include, for example, coding / decoding and modulation / demodulation. The PHYs 211 and 221 may perform multi-antenna mapping. As shown in FIG.3, the PHYs 211 and 221 may provide one or more transport channels as a service to the MACs 212 and 222.

[0106] FIG. 4A illustrates an example downlink data flow through the NR user plane protocol stack. FIG.4A illustrates a downlink data flow of three IP packets (n, n+1, and m) through the NR user plane protocol stack to generate two TBs at the gNB 220. An uplink data flow through the NR user plane protocol stack may be similar to the downlink data flow depicted in FIG. 4A.

[0107] The downlink data flow of FIG. 4A begins when SDAP 225 receives the three IP packets from one or more QoS flows and maps the three packets to radio bearers. In FIG. 4A, the SDAP 225 maps IP packets n and n+1 to a first radio bearer 402 and maps IP packet m to a second radio bearer 404. An SDAP header (labeled with an " H” in FIG. 4A) is added to an IP packet. The data unit from / to a higher protocol layer is referred to as a service data unit (SDU) of the lower protocol layer and the data unit to / from a lower protocol layer is referred to as a protocol data unit (PDU) of the higher protocol layer. As shown in FIG. 4A, the data unit from the SDAP 225 is an SDU of lower protocol layer PDCP 224 and is a PDU of the SDAP 225.

[0108] The remaining protocol layers in FIG. 4A may perform their associated functionality (e.g., with respect to FIG. 3), add corresponding headers, and forward their respective outputs to the next lower layer. For example, the PDCP 224 may perform IP-header compression and ciphering and forward its output to the RLC 223. The RLC 223 may optionally perform segmentation (e.g., as shown for IP packet m in FIG.4A) and forward its output to the MAC 222. The MAC 222 may multiplex a number of RLC PDUs and may attach a MAC subheader to an RLC PDU to form a transport block. In NR, the MAC subheaders may be distributed across the MAC PDU, as illustrated in FIG. 4A. In LTE, the MAC subheaders may be entirely located at the beginning of the MAC PDU. The NR MAC PDU structure may reduce processing time and associated latency because the MAC PDU subheaders may be computed before the full MAC PDU is assembled.Docket No.: 25-1005PCT

[0109] FIG. 4B illustrates an example format of a MAC subheader in a MAC PDU. The MAC subheader includes: an SDU length field for indicating the length (e.g., in bytes) of the MAC SDU to which the MAC subheader corresponds; a logical channel identifier (LCID) field for identifying the logical channel from which the MAC SDU originated to aid in the demultiplexing process; a flag (F) for indicating the size of the SDU length field; and a reserved bit (R) field for future use.

[0110] FIG. 4B further illustrates MAC control elements (CEs) inserted into the MAC PDU by a MAC, such as MAC 223 or MAC 222. For example, FIG. 4B illustrates two MAC CEs inserted into the MAC PDU. MAC CEs may be inserted at the beginning of a MAC PDU for downlink transmissions (as shown in FIG. 4B) and at the end of a MAC PDU for uplink transmissions. MAC CEs may be used for in-band control signaling. Example MAC CEs include: scheduling-related MAC CEs, such as buffer status reports and power headroom reports; activation / deactivation MAC CEs, such as those for activation / deactivation of PDCP duplication detection, channel state information (CSI) reporting, sounding reference signal (SRS) transmission, and prior configured components; discontinuous reception (DRX) related MAC CEs; timing advance MAC CEs; and random access related MAC CEs. A MAC CE may be preceded by a MAC subheader with a similar format as described for MAC SDUs and may be identified with a reserved value in the LCID field that indicates the type of control information included in the MAC CE.

[0111] Before describing the NR control plane protocol stack, logical channels, transport channels, and physical channels are first described as well as a mapping between the channel types. One or more of the channels may be used to carry out functions associated with the NR control plane protocol stack described later below.

[0112] FIG. 5A and FIG. 5B illustrate, for downlink and uplink respectively, a mapping between logical channels, transport channels, and physical channels. Information is passed through channels between the RLC, the MAC, and the PHY of the NR protocol stack. A logical channel may be used between the RLC and the MAC and may be classified as a control channel that carries control and configuration information in the NR control plane or as a traffic channel that carries data in the NR user plane. A logical channel may be classified as a dedicated logical channel that is dedicated to a specific UE or as a common logical channel that may be used by more than one UE. A logical channel may also be defined by the type of information it carries. The set of logical channels defined by NR include, for example:

[0113] - a paging control channel (PCCH) for carrying paging messages used to page a UE whose location is not known to the network on a cell level;

[0114] - a broadcast control channel (BCCH) for carrying system information messages in the form of a master information block (MIB) and several system information blocks (SIBs), wherein the system information messages may be used by the UEs to obtain information about how a cell is configured and how to operate within the cell;Docket No.: 25-1005PCT

[0115] - a common control channel (CCCH) for carrying control messages together with random access;

[0116] - a dedicated control channel (DCCH) for carrying control messages to / from a specific the UE to configure the UE; and

[0117] - a dedicated traffic channel (DTCH) for carrying user data to / from a specific the UE.

[0118] Transport channels are used between the MAC and PHY layers and may be defined by how the information they carry is transmitted over the air interface. The set of transport channels defined by NR include, for example:

[0119] - a paging channel (PCH) for carrying paging messages that originated from the PCCH;

[0120] - a broadcast channel (BCH) for carrying the MIB from the BCCH;

[0121] - a downlink shared channel (DL-SCH) for carrying downlink data and signaling messages, including the SIBs from the BCCH;

[0122] - an uplink shared channel (UL-SCH) for carrying uplink data and signaling messages; and

[0123] - a random access channel (RACH) for allowing a UE to contact the network without any prior scheduling.

[0124] The PHY may use physical channels to pass information between processing levels of the PHY. A physical channel may have an associated set of time-frequency resources for carrying the information of one or more transport channels. The PHY may generate control information to support the low-level operation of the PHY and provide the control information to the lower levels of the PHY via physical control channels, known as L1 / L2 control channels. The set of physical channels and physical control channels defined by NR include, for example:

[0125] -- a physical broadcast channel (PBCH) for carrying the MIB from the BCH;

[0126] - a physical downlink shared channel (PDSCH) for carrying downlink data and signaling messages from the DL-SCH, as well as paging messages from the PCH;

[0127] - a physical downlink control channel (PDCCH) for carrying downlink control information (DCI), which may include downlink scheduling commands, uplink scheduling grants, and uplink power control commands;

[0128] - a physical uplink shared channel (PUSCH) for carrying uplink data and signaling messages from the UL-SCH and in some instances uplink control information (UCI) as described below;

[0129] - a physical uplink control channel (PUCCH) for carrying UCI, which may include HARQ acknowledgments, channel quality indicators (CQI), pre-coding matrix indicators (PM I), rank indicators (Rl), and scheduling requests (SR); and

[0130] - a physical random access channel (PRACH) for random access.

[0131] Similar to the physical control channels, the physical layer generates physical signals to support the low-level operation of the physical layer. As shown in FIG. 5A and FIG. 5B, the physical layer signalsDocket No.: 25-1005PCTdefined by NR include: primary synchronization signals (PSS), secondary synchronization signals (SSS), channel state information reference signals (CSI-RS), demodulation reference signals (DMRS), sounding reference signals (SRS), and phase-tracking reference signals (PT-RS). These physical layer signals will be described in greater detail below.

[0132] FIG. 2B illustrates an example NR control plane protocol stack. As shown in FIG. 2B, the NR control plane protocol stack may use the same / similar first four protocol layers as the example NR user plane protocol stack. These four protocol layers include the PHYs 211 and 221, the MACs 212 and 222, the RLCs 213 and 223, and the PDCPs 214 and 224. Instead of having the SDAPs 215 and 225 at the top of the stack as in the NR user plane protocol stack, the NR control plane stack has radio resource controls (RRCs) 216 and 226 and NAS protocols 217 and 237 at the top of the NR control plane protocol stack.

[0133] The NAS protocols 217 and 237 may provide control plane functionality between the UE 210 and the AMF 230 (e.g., the AMF 158A) or, more generally, between the UE 210 and the CN. The NAS protocols 217 and 237 may provide control plane functionality between the UE 210 and the AMF 230 via signaling messages, referred to as NAS messages. There is no direct path between the UE 210 and the AMF 230 through which the NAS messages can be transported. The NAS messages may be transported using the AS of the Uu and NG interfaces. NAS protocols 217 and 237 may provide control plane functionality such as authentication, security, connection setup, mobility management, and session management.

[0134] The RRCs 216 and 226 may provide control plane functionality between the UE 210 and the gNB 220 or, more generally, between the UE 210 and the RAN. The RRCs 216 and 226 may provide control plane functionality between the UE 210 and the gNB 220 via signaling messages, referred to as RRC messages. RRC messages may be transmitted between the UE 210 and the RAN using signaling radio bearers and the same / similar PDCP, RLC, MAC, and PHY protocol layers. The MAC may multiplex controlplane and user-plane data into the same transport block (TB). The RRCs 216 and 226 may provide control plane functionality such as: broadcast of system information related to AS and NAS; paging initiated by the CN or the RAN; establishment, maintenance and release of an RRC connection between the UE 210 and the RAN; security functions including key management; establishment, configuration, maintenance and release of signaling radio bearers and data radio bearers; mobility functions; QoS management functions; the UE measurement reporting and control of the reporting; detection of and recovery from radio link failure (RLF); and / or NAS message transfer. As part of establishing an RRC connection, RRCs 216 and 226 may establish an RRC context, which may involve configuring parameters for communication between the UE 210 and the RAN.

[0135] FIG. 6 is an example diagram showing RRC state transitions of a UE. The UE may be the same or similar to the wireless device 106 depicted in FIG. 1A, the UE 210 depicted in FIG. 2A and FIG. 2B, or any other wireless device described in the present disclosure. As illustrated in FIG. 6, a UE may be in at leastDocket No.: 25-1005PCTone of three RRC states: RRC connected 602 (e.g., RRC_CONNECTED), RRC idle 604 (e.g., RRC_IDLE), and RRC inactive 606 (e.g., RRCJNACTIVE).

[0136] In RRC connected 602, the UE has an established RRC context and may have at least one RRC connection with a base station. The base station may be similar to one of the one or more base stations included in the RAN 104 depicted in FIG. 1A, one of the gNBs 160 or ng-eNBs 162 depicted in FIG. 1B, the gNB 220 depicted in FIG. 2A and FIG. 2B, or any other base station described in the present disclosure. The base station with which the UE is connected may have the RRC context for the UE. The RRC context, referred to as the UE context, may comprise parameters for communication between the UE and the base station. These parameters may include, for example: one or more AS contexts; one or more radio link configuration parameters; bearer configuration information (e.g., relating to a data radio bearer, signaling radio bearer, logical channel, QoS flow, and / or PDU session); security information; and / or PHY, MAC, RLC, PDCP, and / or SDAP layer configuration information. While in RRC connected 602, mobility of the UE may be managed by the RAN (e.g., the RAN 104 or the NG-RAN 154). The UE may measure the signal levels (e.g., reference signal levels) from a serving cell and neighboring cells and report these measurements to the base station currently serving the UE. The UE's serving base station may request a handover to a cell of one of the neighboring base stations based on the reported measurements. The RRC state may transition from RRC connected 602 to RRC idle 604 through a connection release procedure 608 or to RRC inactive 606 through a connection inactivation procedure 610.

[0137] In RRC idle 604, an RRC context may not be established for the UE. In RRC idle 604, the UE may not have an RRC connection with the base station. While in RRC idle 604, the UE may be in a sleep state for the majority of the time (e.g., to conserve battery power). The UE may wake up periodically (e.g., once in every discontinuous reception cycle) to monitor for paging messages from the RAN. Mobility of the UE may be managed by the UE through a procedure known as cell reselection. The RRC state may transition from RRC idle 604 to RRC connected 602 through a connection establishment procedure 612, which may involve a random access procedure as discussed in greater detail below.

[0138] In RRC inactive 606, the RRC context previously established is maintained in the UE and the base station. This allows for a fast transition to RRC connected 602 with reduced signaling overhead as compared to the transition from RRC idle 604 to RRC connected 602. While in RRC inactive 606, the UE may be in a sleep state and mobility of the UE may be managed by the UE through cell reselection. The RRC state may transition from RRC inactive 606 to RRC connected 602 through a connection resume procedure 614 or to RRC idle 604 though a connection release procedure 616 that may be the same as or similar to connection release procedure 608.

[0139] An RRC state may be associated with a mobility management mechanism. In RRC idle 604 and RRC inactive 606, mobility is managed by the UE through cell reselection. The purpose of mobilityDocket No.: 25-1005PCTmanagement in RRC idle 604 and RRC inactive 606 is to allow the network to be able to notify the UE of an event via a paging message without having to broadcast the paging message over the entire mobile communications network. The mobility management mechanism used in RRC idle 604 and RRC inactive 606 may allow the network to track the UE on a cell-group level so that the paging message may be broadcast over the cells of the cell group that the UE currently resides within instead of the entire mobile communication network. The mobility management mechanisms for RRC idle 604 and RRC inactive 606 track the UE on a cell-group level. They may do so using different granularities of grouping. For example, there may be three levels of cell-grouping granularity: individual cells; cells within a RAN area identified by a RAN area identifier (RAI); and cells within a group of RAN areas, referred to as a tracking area and identified by a tracking area identifier (TAI).

[0140] Tracking areas may be used to track the UE at the CN level. The CN (e.g., the CN 102 or the 5G-CN 152) may provide the UE with a list of TAIs associated with a UE registration area. If the UE moves, through cell reselection, to a cell associated with a TAI not included in the list of TAIs associated with the UE registration area, the UE may perform a registration update with the CN to allow the CN to update the UE's location and provide the UE with a new the UE registration area.

[0141] RAN areas may be used to track the UE at the RAN level. For a UE in RRC inactive 606 state, the UE may be assigned a RAN notification area. A RAN notification area may comprise one or more cell identities, a list of RAIs, or a list of TAIs. In an example, a base station may belong to one or more RAN notification areas. In an example, a cell may belong to one or more RAN notification areas. If the UE moves, through cell reselection, to a cell not included in the RAN notification area assigned to the UE, the UE may perform a notification area update with the RAN to update the UE's RAN notification area.

[0142] A base station storing an RRC context for a UE or a last serving base station of the UE may be referred to as an anchor base station. An anchor base station may maintain an RRC context for the UE at least during a period of time that the UE stays in a RAN notification area of the anchor base station and / or during a period of time that the UE stays in RRC inactive 606.

[0143] A gNB, such as gNBs 160 in FIG. 1B, may be split into two parts: a central unit (gNB-CU), and one or more distributed units (gNB-DU). A gNB-CU may be coupled to one or more gNB-DUs using an F1 interface. The gNB-CU may comprise the RRC, the PDCP, and the SDAP. A gNB-DU may comprise the RLC, the MAC, and the PHY.

[0144] In NR, the physical signals and physical channels (discussed with respect to FIG. 5A and FIG. 5B) may be mapped onto orthogonal frequency divisional multiplexing (OFDM) symbols. OFDM is a multicarrier communication scheme that transmits data over F orthogonal subcarriers (or tones). Before transmission, the data may be mapped to a series of complex symbols (e.g., M-quadrature amplitude modulation (M-QAM) or M-phase shift keying (M-PSK) symbols), referred to as source symbols, and divided into F parallelDocket No.: 25-1005PCTsymbol streams. The F parallel symbol streams may be treated as though they are in the frequency domain and used as inputs to an Inverse Fast Fourier Transform (IFFT) block that transforms them into the time domain. The IFFT block may take in F source symbols at a time, one from each of the F parallel symbol streams, and use each source symbol to modulate the amplitude and phase of one of F sinusoidal basis functions that correspond to the F orthogonal subcarriers. The output of the IFFT block may be F timedomain samples that represent the summation of the F orthogonal subcarriers. The F time-domain samples may form a single OFDM symbol. After some processing (e.g., addition of a cyclic prefix) and up-conversion, an OFDM symbol provided by the IFFT block may be transmitted over the air interface on a carrier frequency. The F parallel symbol streams may be mixed using an FFT block before being processed by the IFFT block. This operation produces Discrete Fourier Transform (DFT)-precoded OFDM symbols and may be used by UEs in the uplink to reduce the peak to average power ratio (PAPR). Inverse processing may be performed on the OFDM symbol at a receiver using an FFT block to recover the data mapped to the source symbols.

[0145] FIG. 7 illustrates an example configuration of an NR frame into which OFDM symbols are grouped. An NR frame may be identified by a system frame number (SFN). The SFN may repeat with a period of 1024 frames. As illustrated, one NR frame may be 10 milliseconds (ms) in duration and may include 10 subframes that are 1 ms in duration. A subframe may be divided into slots that include, for example, 14 OFDM symbols per slot.

[0146] The duration of a slot may depend on the numerology used for the OFDM symbols of the slot. In NR, a flexible numerology is supported to accommodate different cell deployments (e.g., cells with carrier frequencies below 1 GHz up to cells with carrier frequencies in the mm-wave range). A numerology may be defined in terms of subcarrier spacing and cyclic prefix duration. For a numerology in NR, subcarrier spacings may be scaled up by powers of two from a baseline subcarrier spacing of 15 kHz, and cyclic prefix durations may be scaled down by powers of two from a baseline cyclic prefix duration of 4.7 ps. For example, NR defines numerologies with the following subcarrier spacing / cyclic prefix duration combinations: 15 kHz / 4.7 ps; 30 kHz / 2.3 ps; 60 kHz / 1.2 ps; 120 kHz / 0.59 ps; and 240 kHz / 0.29 ps.

[0147] A slot may have a fixed number of OFDM symbols (e.g., 14 OFDM symbols). A numerology with a higher subcarrier spacing has a shorter slot duration and, correspondingly, more slots per subframe. FIG. 7 illustrates this numerology-dependent slot duration and slots-per-subframe transmission structure (the numerology with a subcarrier spacing of 240 kHz is not shown in FIG. 7 for ease of illustration). A subframe in NR may be used as a numerology-independent time reference, while a slot may be used as the unit upon which uplink and downlink transmissions are scheduled. To support low latency, scheduling in NR may be decoupled from the slot duration and start at any OFDM symbol and last for as many symbols asDocket No.: 25-1005PCTneeded for a transmission. These partial slot transmissions may be referred to as mini-slot or subslot transmissions.

[0148] FIG. 8 illustrates an example configuration of a slot in the time and frequency domain for an NR carrier. The slot includes resource elements (REs) and resource blocks (RBs). An RE is the smallest physical resource in NR. An RE spans one OFDM symbol in the time domain by one subcarrier in the frequency domain as shown in FIG. 8. An RB spans twelve consecutive REs in the frequency domain as shown in FIG. 8. An NR carrier may be limited to a width of 275 RBs or 275×12 = 3300 subcarriers. Such a limitation, if used, may limit the NR carrier to 50, 100, 200, and 400 MHz for subcarrier spacings of 15, 30, 60, and 120 kHz, respectively, where the 400 MHz bandwidth may be set based on a 400 MHz per carrier bandwidth limit.

[0149] FIG. 8 illustrates a single numerology being used across the entire bandwidth of the NR carrier. In other example configurations, multiple numerologies may be supported on the same carrier.

[0150] NR may support wide carrier bandwidths (e.g., up to 400 MHz for a subcarrier spacing of 120 kHz). Not all UEs may be able to receive the full carrier bandwidth (e.g., due to hardware limitations). Also, receiving the full carrier bandwidth may be prohibitive in terms of UE power consumption. In an example, to reduce power consumption and / or for other purposes, a UE may adapt the size of the UE's receive bandwidth based on the amount of traffic the UE is scheduled to receive. This is referred to as bandwidth adaptation.

[0151] NR defines bandwidth parts (BWPs) to support UEs not capable of receiving the full carrier bandwidth and to support bandwidth adaptation. In an example, a BWP may be defined by a subset of contiguous RBs on a carrier. A UE may be configured (e.g., via RRC layer) with one or more downlink BWPs and one or more uplink BWPs per serving cell (e.g., up to four downlink BWPs and up to four uplink BWPs per serving cell). At a given time, one or more of the configured BWPs for a serving cell may be active These one or more BWPs may be referred to as active BWPs of the serving cell. When a serving cell is configured with a secondary uplink carrier, the serving cell may have one or more first active BWPs in the uplink carrier and one or more second active BWPs in the secondary uplink carrier.

[0152] For unpaired spectra, a downlink BWP from a set of configured downlink BWPs may be linked with an uplink BWP from a set of configured uplink BWPs if a downlink BWP index of the downlink BWP and an uplink BWP index of the uplink BWP are the same. For unpaired spectra, a UE may expect that a center frequency for a downlink BWP is the same as a center frequency for an uplink BWP.

[0153] For a downlink BWP in a set of configured downlink BWPs on a primary cell (PCell), a base station may configure a UE with one or more control resource sets (CORESETs) for at least one search space. A search space is a set of locations in the time and frequency domains where the UE may find control information. The search space may be a UE-specific search space or a common search space (potentiallyDocket No.: 25-1005PCTusable by a plurality of UEs). For example, a base station may configure a UE with a common search space, on a PCell or on a primary secondary cell (PSCell), in an active downlink BWP.

[0154] For an uplink BWP in a set of configured uplink BWPs, a BS may configure a UE with one or more resource sets for one or more PUCCH transmissions. A UE may receive downlink receptions (e.g., PDCCH or PDSCH) in a downlink BWP according to a configured numerology (e.g., subcarrier spacing and cyclic prefix duration) for the downlink BWP. The UE may transmit uplink transmissions (e.g., PUCCH or PUSCH) in an uplink BWP according to a configured numerology (e.g., subcarrier spacing and cyclic prefix length for the uplink BWP).

[0155] One or more BWP indicator fields may be provided in Downlink Control Information (DCI). A value of a BWP indicator field may indicate which BWP in a set of configured BWPs is an active downlink BWP for one or more downlink receptions. The value of the one or more BWP indicator fields may indicate an active uplink BWP for one or more uplink transmissions.

[0156] A base station may semi-statically configure a UE with a default downlink BWP within a set of configured downlink BWPs associated with a PCell. If the base station does not provide the default downlink BWP to the UE, the default downlink BWP may be an initial active downlink BWP. The UE may determine which BWP is the initial active downlink BWP based on a CORESET configuration obtained using the PBCH.

[0157] A base station may configure a UE with a BWP inactivity timer value for a PCell. The UE may start or restart a BWP inactivity timer at any appropriate time. For example, the UE may start or restart the BWP inactivity timer (a) when the UE detects a DCI indicating an active downlink BWP other than a default downlink BWP for a paired spectra operation; or (b) when a UE detects a DCI indicating an active downlink BWP or active uplink BWP other than a default downlink BWP or uplink BWP for an unpaired spectra operation. If the UE does not detect DCI during an interval of time (e.g., 1 ms or 0.5 ms), the UE may run the BWP inactivity timer toward expiration (for example, increment from zero to the BWP inactivity timer value, or decrement from the BWP inactivity timer value to zero). When the BWP inactivity timer expires, the UE may switch from the active downlink BWP to the default downlink BWP.

[0158] In an example, a base station may semi-statically configure a UE with one or more BWPs. A UE may switch an active BWP from a first BWP to a second BWP in response to receiving a DCI indicating the second BWP as an active BWP and / or in response to an expiry of the BWP inactivity timer (e.g., if the second BWP is the default BWP).

[0159] Downlink and uplink BWP switching (where BWP switching refers to switching from a currently active BWP to a not currently active BWP) may be performed independently in paired spectra. In unpaired spectra, downlink and uplink BWP switching may be performed simultaneously Switching betweenDocket No.: 25-1005PCTconfigured BWPs may occur based on RRC signaling, DCI, expiration of a BWP inactivity timer, and / or an initiation of random access.

[0160] FIG. 9 illustrates an example of bandwidth adaptation using three configured BWPs for an NR carrier. A UE configured with the three BWPs may switch from one BWP to another BWP at a switching point. In the example illustrated in FIG. 9, the BWPs include: a BWP 902 with a bandwidth of 40 MHz and a subcarrier spacing of 15 kHz; a BWP 904 with a bandwidth of 10 MHz and a subcarrier spacing of 15 kHz; and a BWP 906 with a bandwidth of 20 MHz and a subcarrier spacing of 60 kHz. The BWP 902 may be an initial active BWP, and the BWP 904 may be a default BWP. The UE may switch between BWPs at switching points. In the example of FIG. 9, the UE may switch from the BWP 902 to the BWP 904 at a switching point 908. The switching at the switching point 908 may occur for any suitable reason, for example, in response to an expiry of a BWP inactivity timer (indicating switching to the default BWP) and / or in response to receiving a DCI indicating BWP 904 as the active BWP. The UE may switch at a switching point 910 from active BWP 904 to BWP 906 in response to receiving a DCI indicating BWP 906 as the active BWP. The UE may switch at a switching point 912 from active BWP 906 to BWP 904 in response to an expiry of a BWP inactivity timer and / or in response to receiving a DCI indicating BWP 904 as the active BWP. The UE may switch at a switching point 914 from active BWP 904 to BWP 902 in response to receiving a DCI indicating BWP 902 as the active BWP.

[0161] If a UE is configured for a secondary cell with a default downlink BWP in a set of configured downlink BWPs and a timer value, UE procedures for switching BWPs on a secondary cell may be the same / similar as those on a primary cell. For example, the UE may use the timer value and the default downlink BWP for the secondary cell in the same / similar manner as the UE would use these values for a primary cell.

[0162] To provide for greater data rates, two or more carriers can be aggregated and simultaneously transmitted to / from the same UE using carrier aggregation (CA). The aggregated carriers in CA may be referred to as component carriers (CCs). When CA is used, there are a number of serving cells for the UE, one for a CC. The CCs may have three configurations in the frequency domain.

[0163] FIG. 10A illustrates the three CA configurations with two CCs. In the intraband, contiguous configuration 1002, the two CCs are aggregated in the same frequency band (frequency band A) and are located directly adjacent to each other within the frequency band. In the intraband, non-contiguous configuration 1004, the two CCs are aggregated in the same frequency band (frequency band A) and are separated in the frequency band by a gap. In the interband configuration 1006, the two CCs are located in frequency bands (frequency band A and frequency band B).

[0164] In an example, up to 32 CCs may be aggregated. The aggregated CCs may have the same or different bandwidths, subcarrier spacing, and / or duplexing schemes (TDD or FDD). A serving cell for a UEDocket No.: 25-1005PCTusing CA may have a downlink CC. For FDD, one or more uplink CCs may be optionally configured for a serving cell. The ability to aggregate more downlink carriers than uplink carriers may be useful, for example, when the UE has more data traffic in the downlink than in the uplink.

[0165] When CA is used, one of the aggregated cells for a UE may be referred to as a primary cell (PCell). The PCell may be the serving cell that the UE initially connects to at RRC connection establishment, reestablishment, and / or handover. The PCell may provide the UE with NAS mobility information and the security input. UEs may have different PCells. In the downlink, the carrier corresponding to the PCell may be referred to as the downlink primary CC (DL PCC). In the uplink, the carrier corresponding to the PCell may be referred to as the uplink primary CC (UL PCC). The other aggregated cells for the UE may be referred to as secondary cells (SCells). In an example, the SCells may be configured after the PCell is configured for the UE. For example, an SCell may be configured through an RRC Connection Reconfiguration procedure. In the downlink, the carrier corresponding to an SCell may be referred to as a downlink secondary CC (DL SCC). In the uplink, the carrier corresponding to the SCell may be referred to as the uplink secondary CC (UL SCC).

[0166] Configured SCells for a UE may be activated and deactivated based on, for example, traffic and channel conditions. Deactivation of an SCell may mean that PDCCH and PDSCH reception on the SCell is stopped and PUSCH, SRS, and CQI transmissions on the SCell are stopped. Configured SCells may be activated and deactivated using a MAC CE with respect to FIG. 4B. For example, a MAC CE may use a bitmap (e.g., one bit per SCell) to indicate which SCells (e.g., in a subset of configured SCells) for the UE are activated or deactivated. Configured SCells may be deactivated in response to an expiration of an SCell deactivation timer (e.g., one SCell deactivation timer per SCell).

[0167] Downlink control information, such as scheduling assignments and scheduling grants, for a cell may be transmitted on the cell corresponding to the assignments and grants, which is known as selfscheduling. The DCI for the cell may be transmitted on another cell, which is known as cross-carrier scheduling. Uplink control information (e.g., HARQ acknowledgments and channel state feedback, such as CQI, PMI, and / or Rl) for aggregated cells may be transmitted on the PUCCH of the PCell. For a larger number of aggregated downlink CCs, the PUCCH of the PCell may become overloaded. Cells may be divided into multiple PUCCH groups.

[0168] FIG. 10B illustrates an example of how aggregated cells may be configured into one or more PUCCH groups. A PUCCH group 1010 and a PUCCH group 1050 may include one or more downlink CCs, respectively. In the example of FIG. 10B, the PUCCH group 1010 includes three downlink CCs: a PCell 1011, an SCell 1012, and an SCell 1013. The PUCCH group 1050 includes three downlink CCs in the present example: a PCell 1051, an SCell 1052, and an SCell 1053. One or more uplink CCs may be configured as a PCell 1021, an SCell 1022, and an SCell 1023. One or more other uplink CCs may beDocket No.: 25-1005PCTconfigured as a primary SCell (PSCell) 1061, an SCell 1062, and an SCell 1063. Uplink control information (UCI) related to the downlink CCs of the PUCCH group 1010, shown as UCI 1031, UCI 1032, and UCI 1033, may be transmitted in the uplink of the PCell 1021. Uplink control information (UCI) related to the downlink CCs of the PUCCH group 1050, shown as UCI 1071, UCI 1072, and UCI 1073, may be transmitted in the uplink of the PSCell 1061. In an example, if the aggregated cells depicted in FIG. 10B were not divided into the PUCCH group 1010 and the PUCCH group 1050, a single uplink PCell to transmit UCI relating to the downlink CCs, and the PCell may become overloaded. By dividing transmissions of UCI between the PCell 1021 and the PSCell 1061, overloading may be prevented.

[0169] A cell, comprising a downlink carrier and optionally an uplink carrier, may be assigned with a physical cell ID and a cell index. The physical cell ID or the cell index may identify a downlink carrier and / or an uplink carrier of the cell, for example, depending on the context in which the physical cell ID is used. A physical cell ID may be determined using a synchronization signal transmitted on a downlink component carrier. A cell index may be determined using RRC messages. In the disclosure, a physical cell ID may be referred to as a carrier ID, and a cell index may be referred to as a carrier index. For example, when the disclosure refers to a first physical cell ID for a first downlink carrier, the disclosure may mean the first physical cell ID is for a cell comprising the first downlink carrier. The same / similar concept may apply to, for example, a carrier activation. When the disclosure indicates that a first carrier is activated, the specification may mean that a cell comprising the first carrier is activated.

[0170] In CA, a multi-carrier nature of a PHY may be exposed to a MAC. In an example, a HARQ entity may operate on a serving cell. A transport block may be generated per assignment / grant per serving cell. A transport block and potential HARQ retransmissions of the transport block may be mapped to a serving cell.

[0171] In the downlink, a base station may transmit (e.g., unicast, multicast, and / or broadcast) one or more Reference Signals (RSs) to a UE (e.g., PSS, SSS, CSI-RS, DMRS, and / or PT-RS, as shown in FIG.5A). In the uplink, the UE may transmit one or more RSs to the base station (e.g., DMRS, PT-RS, and / or SRS, as shown in FIG. 5B). The PSS and the SSS may be transmitted by the base station and used by the UE to synchronize the UE to the base station. The PSS and the SSS may be provided in a synchronization signal (SS) / physical broadcast channel (PBCH) block that includes the PSS, the SSS, and the PBCH. The base station may periodically transmit a burst of SS / PBCH blocks.

[0172] FIG. 11A illustrates an example of an SS / PBCH block's structure and location. A burst of SS / PBCH blocks may include one or more SS / PBCH blocks (e.g., 4 SS / PBCH blocks, as shown in FIG. 11A). Bursts may be transmitted periodically (e.g., every 2 frames or 20 ms). A burst may be restricted to a half-frame (e.g, a first half-frame having a duration of 5 ms). It will be understood that FIG. 11A is an example, and that these parameters (number of SS / PBCH blocks per burst, periodicity of bursts, position of burst withinDocket No.: 25-1005PCTthe frame) may be configured based on, for example: a carrier frequency of a cell in which the SS / PBCH block is transmitted; a numerology or subcarrier spacing of the cell; a configuration by the network (e.g., using RRC signaling); or any other suitable factor. In an example, the UE may assume a subcarrier spacing for the SS / PBCH block based on the carrier frequency being monitored, unless the radio network configured the UE to assume a different subcarrier spacing.

[0173] The SS / PBCH block may span one or more OFDM symbols in the time domain (e.g., 4 OFDM symbols, as shown in the example of FIG. 11 A) and may span one or more subcarriers in the frequency domain (e.g., 240 contiguous subcarriers). The PSS, the SSS, and the PBCH may have a common center frequency. The PSS may be transmitted first and may span, for example, 1 OFDM symbol and 127 subcarriers. The SSS may be transmitted after the PSS (e.g., two symbols later) and may span 1 OFDM symbol and 127 subcarriers. The PBCH may be transmitted after the PSS (e.g., across the next 3 OFDM symbols) and may span 240 subcarriers.

[0174] The location of the SS / PBCH block in the time and frequency domains may not be known to the UE (e.g., if the UE is searching for the cell). To find and select the cell, the UE may monitor a carrier for the PSS. For example, the UE may monitor a frequency location within the carrier. If the PSS is not found after a certain duration (e.g., 20 ms), the UE may search for the PSS at a different frequency location within the carrier, as indicated by a synchronization raster. If the PSS is found at a location in the time and frequency domains, the UE may determine, based on a known structure of the SS / PBCH block, the locations of the SSS and the PBCH, respectively. The SS / PBCH block may be a cell-defining SS block (CD-SSB). In an example, a primary cell may be associated with a CD-SSB. The CD-SSB may be located on a synchronization raster. In an example, a cell selection / search and / or reselection may be based on the CD-SSB.

[0175] The SS / PBCH block may be used by the UE to determine one or more parameters of the cell. For example, the UE may determine a physical cell identifier (PCI) of the cell based on the sequences of the PSS and the SSS, respectively. The UE may determine a location of a frame boundary of the cell based on the location of the SS / PBCH block. For example, the SS / PBCH block may indicate that it has been transmitted in accordance with a transmission pattern, wherein a SS / PBCH block in the transmission pattern is a known distance from the frame boundary.

[0176] The PBCH may use a QPSK modulation and may use forward error correction (FEC). The FEC may use polar coding. One or more symbols spanned by the PBCH may carry one or more DMRSs for demodulation of the PBCH. The PBCH may include an indication of a current system frame number (SFN) of the cell and / or a SS / PBCH block timing index. These parameters may facilitate time synchronization of the UE to the base station. The PBCH may include a master information block (MIB) used to provide the UE with one or more parameters. The MIB may be used by the UE to locate remaining minimum systemDocket No.: 25-1005PCTinformation (RMSI) associated with the cell. The RMSI may include a System Information Block Type 1 (SIB1). The SIB1 may contain information needed by the UE to access the cell. The UE may use one or more parameters of the MIB to monitor PDCCH, which may be used to schedule PDSCH. The PDSCH may include the SIB1. The SIB1 may be decoded using parameters provided in the MIB. The PBCH may indicate an absence of SIB1. Based on the PBCH indicating the absence of SIB1, the UE may be pointed to a frequency. The UE may search for an SS / PBCH block at the frequency to which the UE is pointed.

[0177] The UE may assume that one or more SS / PBCH blocks transmitted with a same SS / PBCH block index are quasi co-located (QCLed) (e.g., having the same / similar Doppler spread, Doppler shift, average gain, average delay, and / or spatial Rx parameters). The UE may not assume QCL for SS / PBCH block transmissions having different SS / PBCH block indices.

[0178] SS / PBCH blocks (e.g., those within a half-frame) may be transmitted in spatial directions (e.g., using different beams that span a coverage area of the cell). In an example, a first SS / PBCH block may be transmitted in a first spatial direction using a first beam, and a second SS / PBCH block may be transmitted in a second spatial direction using a second beam.

[0179] In an example, within a frequency span of a carrier, a base station may transmit a plurality of SS / PBCH blocks. In an example, a first PCI of a first SS / PBCH block of the plurality of SS / PBCH blocks may be different from a second PCI of a second SS / PBCH block of the plurality of SS / PBCH blocks. The PCIs of SS / PBCH blocks transmitted in different frequency locations may be different or the same.

[0180] The CSI-RS may be transmitted by the base station and used by the UE to acquire channel state information (CSI). The base station may configure the UE with one or more CSI-RSs for channel estimation or any other suitable purpose. The base station may configure a UE with one or more of the same / similar CSI-RSs. The UE may measure the one or more CSI-RSs. The UE may estimate a downlink channel state and / or generate a CSI report based on the measuring of the one or more downlink CSI-RSs. The UE may provide the CSI report to the base station. The base station may use feedback provided by the UE (e.g., the estimated downlink channel state) to perform link adaptation.

[0181] The base station may semi-statically configure the UE with one or more CSI-RS resource sets. A CSI-RS resource may be associated with a location in the time and frequency domains and a periodicity. The base station may selectively activate and / or deactivate a CSI-RS resource The base station may indicate to the UE that a CSI-RS resource in the CSI-RS resource set is activated and / or deactivated.

[0182] The base station may configure the UE to report CSI measurements. The base station may configure the UE to provide CSI reports periodically, aperiodically, or semi-persistently. For periodic CSI reporting, the UE may be configured with a timing and / or periodicity of a plurality of CSI reports. For aperiodic CSI reporting, the base station may request a CSI report. For example, the base station may command the UE to measure a configured CSI-RS resource and provide a CSI report relating to theDocket No.: 25-1005PCTmeasurements. For semi-persistent CSI reporting, the base station may configure the UE to transmit periodically, and selectively activate or deactivate the periodic reporting. The base station may configure the UE with a CSI-RS resource set and CSI reports using RRC signaling.

[0183] The CSI-RS configuration may comprise one or more parameters indicating, for example, up to 32 antenna ports. The UE may be configured to employ the same OFDM symbols for a downlink CSI-RS and a control resource set (CORESET) when the downlink CSI-RS and CORESET are spatially QCLed and resource elements associated with the downlink CSI-RS are outside of the physical resource blocks (PRBs) configured for the CORESET. The UE may be configured to employ the same OFDM symbols for downlink CSI-RS and SS / PBCH blocks when the downlink CSI-RS and SS / PBCH blocks are spatially QCLed and resource elements associated with the downlink CSI-RS are outside of PRBs configured for the SS / PBCH blocks.

[0184] Downlink DMRSs may be transmitted by a base station and used by a UE for channel estimation. For example, the downlink DMRS may be used for coherent demodulation of one or more downlink physical channels (e.g., PDSCH). An NR network may support one or more variable and / or configurable DMRS patterns for data demodulation At least one downlink DMRS configuration may support a front-loaded DMRS pattern. A front-loaded DMRS may be mapped over one or more OFDM symbols (e.g., one or two adjacent OFDM symbols). A base station may semi-statically configure the UE with a number (e.g. a maximum number) of front-loaded DMRS symbols for PDSCH. A DMRS configuration may support one or more DMRS ports. For example, for single user-MIMO, a DMRS configuration may support up to eight orthogonal downlink DMRS ports per UE. For multiuser-MIMO, a DMRS configuration may support up to 4 orthogonal downlink DMRS ports per UE. A radio network may support (e.g., at least for CP-OFDM) a common DMRS structure for downlink and uplink, wherein a DMRS location, a DMRS pattern, and / or a scrambling sequence may be the same or different. The base station may transmit a downlink DMRS and a corresponding PDSCH using the same precoding matrix. The UE may use the one or more downlink DMRSs for coherent demodulation / channel estimation of the PDSCH.

[0185] In an example, a transmitter (e.g., a base station) may use a precoder matrices for a part of a transmission bandwidth. For example, the transmitter may use a first precoder matrix for a first bandwidth and a second precoder matrix for a second bandwidth. The first precoder matrix and the second precoder matrix may be different based on the first bandwidth being different from the second bandwidth. The UE may assume that a same precoding matrix is used across a set of PRBs. The set of PRBs may be denoted as a precoding resource block group (PRG).

[0186] A PDSCH may comprise one or more layers. The UE may assume that at least one symbol with DMRS is present on a layer of the one or more layers of the PDSCH. A higher layer may configure up to 3 DMRSs for the PDSCH.Docket No.: 25-1005PCT

[0187] Downlink PT-RS may be transmitted by a base station and used by a UE for phase-noise compensation. Whether a downlink PT-RS is present or not may depend on an RRC configuration. The presence and / or pattern of the downlink PT-RS may be configured on a UE-specific basis using a combination of RRC signaling and / or an association with one or more parameters employed for other purposes (e.g., modulation and coding scheme (MCS)), which may be indicated by DCI. When configured, a dynamic presence of a downlink PT-RS may be associated with one or more DCI parameters comprising at least MCS. An NR network may support a plurality of PT-RS densities defined in the time and / or frequency domains. When present, a frequency domain density may be associated with at least one configuration of a scheduled bandwidth. The UE may assume a same precoding for a DMRS port and a PT-RS port. A number of PT-RS ports may be fewer than a number of DMRS ports in a scheduled resource. Downlink PT-RS may be confined in the scheduled time / frequency duration for the UE. Downlink PT-RS may be transmitted on symbols to facilitate phase tracking at the receiver.

[0188] The UE may transmit an uplink DMRS to a base station for channel estimation. For example, the base station may use the uplink DMRS for coherent demodulation of one or more uplink physical channels. For example, the UE may transmit an uplink DMRS with a PUSCH and / or a PUCCH. The uplink DM-RS may span a range of frequencies that is similar to a range of frequencies associated with the corresponding physical channel. The base station may configure the UE with one or more uplink DMRS configurations. At least one DMRS configuration may support a front-loaded DMRS pattern. The front-loaded DMRS may be mapped over one or more OFDM symbols (e.g., one or two adjacent OFDM symbols). One or more uplink DMRSs may be configured to transmit at one or more symbols of a PUSCH and / or a PUCCH. The base station may semi-statically configure the UE with a number (e.g. maximum number) of front-loaded DMRS symbols for the PUSCH and / or the PUCCH, which the UE may use to schedule a single-symbol DMRS and / or a double-symbol DMRS. An NR network may support (e.g., for cyclic prefix orthogonal frequency division multiplexing (CP-OFDM)) a common DMRS structure for downlink and uplink, wherein a DMRS location, a DMRS pattern, and / or a scrambling sequence for the DMRS may be the same or different.

[0189] A PUSCH may comprise one or more layers, and the UE may transmit at least one symbol with DMRS present on a layer of the one or more layers of the PUSCH. In an example, a higher layer may configure up to three DMRSs for the PUSCH.

[0190] Uplink PT-RS (which may be used by a base station for phase tracking and / or phase-noise compensation) may or may not be present depending on an RRC configuration of the UE. The presence and / or pattern of uplink PT-RS may be configured on a UE-specific basis by a combination of RRC signaling and / or one or more parameters employed for other purposes (e.g., Modulation and Coding Scheme (MCS)), which may be indicated by DCI. When configured, a dynamic presence of uplink PT-RS may be associated with one or more DCI parameters comprising at least MCS. A radio network mayDocket No.: 25-1005PCTsupport a plurality of uplink PT-RS densities defined in time / frequency domain. When present, a frequency domain density may be associated with at least one configuration of a scheduled bandwidth. The UE may assume a same precoding for a DMRS port and a PT-RS port. A number of PT-RS ports may be fewer than a number of DMRS ports in a scheduled resource. For example, uplink PT-RS may be confined in the scheduled time / frequency duration for the UE.

[0191] SRS may be transmitted by a UE to a base station for channel state estimation to support uplink channel dependent scheduling and / or link adaptation. SRS transmitted by the UE may allow a base station to estimate an uplink channel state at one or more frequencies. A scheduler at the base station may employ the estimated uplink channel state to assign one or more resource blocks for an uplink PUSCH transmission from the UE. The base station may semi-statically configure the UE with one or more SRS resource sets. For an SRS resource set, the base station may configure the UE with one or more SRS resources. An SRS resource set applicability may be configured by a higher layer (e.g., RRC) parameter. For example, when a higher layer parameter indicates beam management, an SRS resource in an SRS resource set of the one or more SRS resource sets (e.g., with the same / similar time domain behavior, periodic, aperiodic, and / or the like) may be transmitted at a time instant (e.g., simultaneously). The UE may transmit one or more SRS resources in SRS resource sets. An NR network may support aperiodic, periodic and / or semi-persistent SRS transmissions. The UE may transmit SRS resources based on one or more trigger types, wherein the one or more trigger types may comprise higher layer signaling (e.g., RRC) and / or one or more DCI formats. In an example, at least one DCI format may be employed for the UE to select at least one of one or more configured SRS resource sets. An SRS trigger type 0 may refer to an SRS triggered based on a higher layer signaling. An SRS trigger type 1 may refer to an SRS triggered based on one or more DCI formats. In an example, when PUSCH and SRS are transmitted in a same slot, the UE may be configured to transmit SRS after a transmission of a PUSCH and a corresponding uplink DMRS.

[0192] The base station may semi-statically configure the UE with one or more SRS configuration parameters indicating at least one of following: a SRS resource configuration identifier; a number of SRS ports; time domain behavior of an SRS resource configuration (e.g., an indication of periodic, semi-persistent, or aperiodic SRS); slot, mini-slot, and / or subframe level periodicity; offset for a periodic and / or an aperiodic SRS resource; a number of OFDM symbols in an SRS resource; a starting OFDM symbol of an SRS resource; an SRS bandwidth; a frequency hopping bandwidth; a cyclic shift; and / or an SRS sequence ID.

[0193] An antenna port is defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed. If a first symbol and a second symbol are transmitted on the same antenna port, the receiver may infer the channel (e.g., fading gain, multipath delay, and / or the like) for conveying the second symbolDocket No.: 25-1005PCTon the antenna port, from the channel for conveying the first symbol on the antenna port. A first antenna port and a second antenna port may be referred to as quasi co-located (QCLed) if one or more large-scale properties of the channel over which a first symbol on the first antenna port is conveyed may be inferred from the channel over which a second symbol on a second antenna port is conveyed. The one or more large-scale properties may comprise at least one of: a delay spread; a Doppler spread; a Doppler shift; an average gain; an average delay; and / or spatial Receiving (Rx) parameters.

[0194] Channels that use beamforming require beam management. Beam management may comprise beam measurement, beam selection, and beam indication. A beam may be associated with one or more reference signals. For example, a beam may be identified by one or more beamformed reference signals. The UE may perform downlink beam measurement based on downlink reference signals (e.g., a channel state information reference signal (CSI-RS)) and generate a beam measurement report. The UE may perform the downlink beam measurement procedure after an RRC connection is set up with a base station.

[0195] FIG. 11B illustrates an example of channel state information reference signals (CSI-RSs) that are mapped in the time and frequency domains. A square shown in FIG. 11B may span a resource block (RB) within a bandwidth of a cell. A base station may transmit one or more RRC messages comprising CSI-RS resource configuration parameters indicating one or more CSI-RSs. One or more of the following parameters may be configured by higher layer signaling (e.g., RRC and / or MAC signaling) for a CSI-RS resource configuration: a CSI-RS resource configuration identity, a number of CSI-RS ports, a CSI-RS configuration (e.g., symbol and resource element (RE) locations in a subframe), a CSI-RS subframe configuration (e.g., subframe location, offset, and periodicity in a radio frame), a CSI-RS power parameter, a CSI-RS sequence parameter, a code division multiplexing (CDM) type parameter, a frequency density, a transmission comb, quasi co-location (QCL) parameters (e.g., QCL-scramblingidentity, crs-portscount, mbsfn-subframeconfiglist, csi-rs-configZPid, qcl-csi-rs-configNZPid), and / or other radio resource parameters.

[0196] The three beams illustrated in FIG. 11 B may be configured for a UE in a UE-specific configuration. Three beams are illustrated in FIG. 11 B (beam #1, beam #2, and beam #3), more or fewer beams may be configured. Beam #1 may be allocated with CSI-RS 1101 that may be transmitted in one or more subcarriers in an RB of a first symbol. Beam #2 may be allocated with CSI-RS 1102 that may be transmitted in one or more subcarriers in an RB of a second symbol. Beam #3 may be allocated with CSI-RS 1103 that may be transmitted in one or more subcarriers in an RB of a third symbol. By using frequency division multiplexing (FDM), a base station may use other subcarriers in a same RB (for example, those that are not used to transmit CSI-RS 1101) to transmit another CSI-RS associated with a beam for another UE. By using time domain multiplexing (TDM), beams used for the UE may be configured such that beams for the UE use symbols from beams of other UEs.Docket No.: 25-1005PCT

[0197] CSI-RSs such as those illustrated in FIG 11 B (e.g., CSI-RS 1101, 1102, 1103) may be transmitted by the base station and used by the UE for one or more measurements. For example, the UE may measure a reference signal received power (RSRP) of configured CSI-RS resources. The base station may configure the UE with a reporting configuration and the UE may report the RSRP measurements to a network (for example, via one or more base stations) based on the reporting configuration. In an example, the base station may determine, based on the reported measurement results, one or more transmission configuration indication (TCI) states comprising a number of reference signals. In an example, the base station may indicate one or more TCI states to the UE (e.g., via RRC signaling, a MAC CE, and / or a DCI). The UE may receive a downlink transmission with a receive (Rx) beam determined based on the one or more TCI states. In an example, the UE mayor may not have a capability of beam correspondence. If the UE has the capability of beam correspondence, the UE may determine a spatial domain filter of a transmit (Tx) beam based on a spatial domain filter of the corresponding Rx beam. If the UE does not have the capability of beam correspondence, the UE may perform an uplink beam selection procedure to determine the spatial domain filter of the Tx beam. The UE may perform the uplink beam selection procedure based on one or more sounding reference signal (SRS) resources configured to the UE by the base station The base station may select and indicate uplink beams for the UE based on measurements of the one or more SRS resources transmitted by the UE.

[0198] In a beam management procedure, a UE may assess (e.g., measure) a channel quality of one or more beam pair links, a beam pair link comprising a transmitting beam transmitted by a base station and a receiving beam received by the UE. Based on the assessment, the UE may transmit a beam measurement report indicating one or more beam pair quality parameters comprising, e.g., one or more beam identifications (e.g., a beam index, a reference signal index, or the like), RSRP, a precoding matrix indicator (PMI), a channel quality indicator (CQI), and / or a rank indicator (Rl).

[0199] FIG. 12A illustrates examples of three downlink beam management procedures: P1, P2, and P3. Procedure P1 may enable a UE measurement on transmit (Tx) beams of a transmission reception point (TRP) (or multiple TRPs), e.g., to support a selection of one or more base station Tx beams and / or UE Rx beams (shown as ovals in the top row and bottom row, respectively, of P1). Beamforming at a TRP may comprise a Tx beam sweep for a set of beams (shown, in the top rows of P1 and P2, as ovals rotated in a counterclockwise direction indicated by the dashed arrow). Beamforming at a UE may comprise an Rx beam sweep for a set of beams (shown, in the bottom rows of P1 and P3, as ovals rotated in a clockwise direction indicated by the dashed arrow). Procedure P2 may be used to enable a UE measurement on Tx beams of a TRP (shown, in the top row of P2, as ovals rotated in a counterclockwise direction indicated by the dashed arrow). The UE and / or the base station may perform procedure P2 using a smaller set of beams than is used in procedure P1, or using narrower beams than the beams used in procedure P1. ThisDocket No.: 25-1005PCTmay be referred to as beam refinement. The UE may perform procedure P3 for Rx beam determination by using the same Tx beam at the base station and sweeping an Rx beam at the UE.

[0200] FIG. 12B illustrates examples of three uplink beam management procedures: U1, U2, and U3. Procedure U1 may be used to enable a base station to perform a measurement on Tx beams of a UE, e.g., to support a selection of one or more UE Tx beams and / or base station Rx beams (shown as ovals in the top row and bottom row, respectively, of U1). Beamforming at the UE may include, e.g., a Tx beam sweep from a set of beams (shown in the bottom rows of U1 and U3 as ovals rotated in a clockwise direction indicated by the dashed arrow). Beamforming at the base station may include, e.g., an Rx beam sweep from a set of beams (shown, in the top rows of U1 and U2, as ovals rotated in a counterclockwise direction indicated by the dashed arrow). Procedure U2 may be used to enable the base station to adjust its Rx beam when the UE uses a fixed Tx beam. The UE and / or the base station may perform procedure U2 using a smaller set of beams than is used in procedure P1, or using narrower beams than the beams used in procedure P1. This may be referred to as beam refinement The UE may perform procedure U3 to adjust its Tx beam when the base station uses a fixed Rx beam.

[0201] A UE may initiate a beam failure recovery (BFR) procedure based on detecting a beam failure. The UE may transmit a BFR request (e.g., a preamble, a UCI, an SR, a MAC CE, and / or the like) based on the initiating of the BFR procedure. The UE may detect the beam failure based on a determination that a quality of beam pair link(s) of an associated control channel is unsatisfactory (e.g., having an error rate higher than an error rate threshold, a received signal power lower than a received signal power threshold, an expiration of a timer, and / or the like).

[0202] The UE may measure a quality of a beam pair link using one or more reference signals (RSs) comprising one or more SS / PBCH blocks, one or more CSI-RS resources, and / or one or more demodulation reference signals (DMRSs). A quality of the beam pair link may be based on one or more of a block error rate (BLER), an RSRP value, a signal to interference plus noise ratio (SINR) value, a reference signal received quality (RSRQ) value, and / or a CSI value measured on RS resources. The base station may indicate that an RS resource is quasi co-located (QCLed) with one or more DM-RSs of a channel (e.g., a control channel, a shared data channel, and / or the like). The RS resource and the one or more DMRSs of the channel may be QCLed when the channel characteristics (e.g., Doppler shift, Doppler spread, average delay, delay spread, spatial Rx parameter, fading, and / or the like) from a transmission via the RS resource to the UE are similar or the same as the channel characteristics from a transmission via the channel to the UE.

[0203] A network (e.g., a gNB and / or an ng-eNB of a network) and / or the UE may initiate a random access procedure. A UE in an RRCJDLE state and / or an RRCJNACTIVE state may initiate the random access procedure to request a connection setup to a network. The UE may initiate the random accessDocket No.: 25-1005PCTprocedure from an RRC_CONNECTED state. The UE may initiate the random access procedure to request uplink resources (e.g., for uplink transmission of an SR when there is no PUCCH resource available) and / or acquire uplink timing (e.g., when uplink synchronization status is non-synchronized). The UE may initiate the random access procedure to request one or more system information blocks (SIBs) (e.g., other system information such as SIB2, SIB3, and / or the like). The UE may initiate the random access procedure for a beam failure recovery request. A network may initiate a random access procedure for a handover and / or for establishing time alignment for an SCell addition.

[0204] FIG. 13A illustrates a four-step contention-based random access procedure. Prior to initiation of the procedure, a base station may transmit a configuration message 1310 to the UE. The procedure illustrated in FIG. 13A comprises transmission of four messages: a Msg 1 1311, a Msg 2 1312, a Msg 3 1313, and a Msg 4 1314. The Msg 1 1311 may include and / or be referred to as a preamble (or a random access preamble). The Msg 2 1312 may include and / or be referred to as a random access response (RAR).

[0205] The configuration message 1310 may be transmitted, for example, using one or more RRC messages. The one or more RRC messages may indicate one or more random access channel (RACH) parameters to the UE. The one or more RACH parameters may comprise at least one of following: general parameters for one or more random access procedures (e.g., RACH-configGeneral)', cell-specific parameters (e.g., RACH-ConfigCommon) and / or dedicated parameters (e.g., RACH-configDedicated). The base station may broadcast or multicast the one or more RRC messages to one or more UEs. The one or more RRC messages may be UE-specific (e.g., dedicated RRC messages transmitted to a UE in an RRC_CONNECTED state and / or in an RRCJNACTIVE state). The UE may determine, based on the one or more RACH parameters, a time-frequency resource and / or an uplink transmit power for transmission of the Msg 1 1311 and / or the Msg 3 1313. Based on the one or more RACH parameters, the UE may determine a reception timing and a downlink channel for receiving the Msg 2 1312 and the Msg 4 1314.

[0206] The one or more RACH parameters provided in the configuration message 1310 may indicate one or more Physical RACH (PRACH) occasions available for transmission of the Msg 1 1311. The one or more PRACH occasions may be predefined. The one or more RACH parameters may indicate one or more available sets of one or more PRACH occasions (e.g., prach-Configlndex). The one or more RACH parameters may indicate an association between (a) one or more PRACH occasions and (b) one or more reference signals. The one or more RACH parameters may indicate an association between (a) one or more preambles and (b) one or more reference signals. The one or more reference signals may be SS / PBCH blocks and / or CSI-RSs. For example, the one or more RACH parameters may indicate a number of SS / PBCH blocks mapped to a PRACH occasion and / or a number of preambles mapped to a SS / PBCH blocks.Docket No.: 25-1005PCT

[0207] The one or more RACH parameters provided in the configuration message 1310 may be used to determine an uplink transmit power of Msg 1 1311 and / or Msg 3 1313. For example, the one or more RACH parameters may indicate a reference power for a preamble transmission (e.g., a received target power and / or an initial power of the preamble transmission). There may be one or more power offsets indicated by the one or more RACH parameters. For example, the one or more RACH parameters may indicate: a power ramping step; a power offset between SSB and CSI-RS; a power offset between transmissions of the Msg 1 1311 and the Msg 3 1313; and / or a power offset value between preamble groups. The one or more RACH parameters may indicate one or more thresholds based on which the UE may determine at least one reference signal (e.g., an SSB and / or CSI-RS) and / or an uplink carrier (e.g., a normal uplink (NUL) carrier and / or a supplemental uplink (SUL) carrier).

[0208] The Msg 1 1311 may include one or more preamble transmissions (e.g., a preamble transmission and one or more preamble retransmissions). An RRC message may be used to configure one or more preamble groups (e.g., group A and / or group B). A preamble group may comprise one or more preambles. The UE may determine the preamble group based on a pathloss measurement and / or a size of the Msg 3 1313. The UE may measure an RSRP of one or more reference signals (e.g., SSBs and / or CSI-RSs) and determine at least one reference signal having an RSRP above an RSRP threshold (e.g., rsrp-ThresholdSSB and / or rsrp-ThresholdCSI-RS). The UE may select at least one preamble associated with the one or more reference signals and / or a selected preamble group, for example, if the association between the one or more preambles and the at least one reference signal is configured by an RRC message.

[0209] The UE may determine the preamble based on the one or more RACH parameters provided in the configuration message 1310. For example, the UE may determine the preamble based on a pathloss measurement, an RSRP measurement, and / or a size of the Msg 3 1313. As another example, the one or more RACH parameters may indicate: a preamble format; a maximum number of preamble transmissions; and / or one or more thresholds for determining one or more preamble groups (e.g., group A and group B). A base station may use the one or more RACH parameters to configure the UE with an association between one or more preambles and one or more reference signals (e.g., SSBs and / or CSI-RSs). If the association is configured, the UE may determine the preamble to include in Msg 1 1311 based on the association. The Msg 1 1311 may be transmitted to the base station via one or more PRACH occasions. The UE may use one or more reference signals (e.g., SSBs and / or CSI-RSs) for selection of the preamble and for determining of the PRACH occasion. One or more RACH parameters (e.g., ra-ssb-OccasionMsklndex and / or ra-OccasionList) may indicate an association between the PRACH occasions and the one or more reference signals.Docket No.: 25-1005PCT

[0210] The UE may perform a preamble retransmission if no response is received following a preamble transmission. The UE may increase an uplink transmit power for the preamble retransmission. The UE may select an initial preamble transmit power based on a pathloss measurement and / or a target received preamble power configured by the network. The UE may determine to retransmit a preamble and may ramp up the uplink transmit power. The UE may receive one or more RACH parameters (e.g., PREAMBLE_POWER_RAMPING_STEP) indicating a ramping step for the preamble retransmission. The ramping step may be an amount of incremental increase in uplink transmit power for a retransmission. The UE may ramp up the uplink transmit power if the UE determines a reference signal (e.g., SSB and / or CSI-RS) that is the same as a previous preamble transmission. The UE may count a number of preamble transmissions and / or retransmissions (e.g., PREAMBLE_TRANSMISSION_COUNTER). The UE may determine that a random access procedure completed unsuccessfully, for example, if the number of preamble transmissions exceeds a threshold configured by the one or more RACH parameters (e.g., preambleTransMax).

[0211] The Msg 2 1312 received by the UE may include an RAR. In some scenarios, the Msg 2 1312 may include multiple RARs corresponding to multiple UEs The Msg 2 1312 may be received after or in response to the transmitting of the Msg 1 1311. The Msg 2 1312 may be scheduled on the DL-SCH and indicated on a PDCCH using a random access RNTI (RA-RNTI). The Msg 2 1312 may indicate that the Msg 1 1311 was received by the base station. The Msg 2 1312 may include a time-alignment command that may be used by the UE to adjust the UE’s transmission timing, a scheduling grant for transmission of the Msg 3 1313, and / or a Temporary Cell RNTI (TC-RNTI). After transmitting a preamble, the UE may start a time window (e.g., ra-ResponseWindow) to monitor a PDCCH for the Msg 2 1312. The UE may determine when to start the time window based on a PRACH occasion that the UE uses to transmit the preamble. For example, the UE may start the time window one or more symbols after a last symbol of the preamble (e.g., at a first PDCCH occasion from an end of a preamble transmission). The one or more symbols may be determined based on a numerology. The PDCCH may be in a common search space (e.g., a Typel-PDCCH common search space) configured by an RRC message. The UE may identify the RAR based on a Radio Network Temporary Identifier (RNTI). RNTIs may be used depending on one or more events initiating the random access procedure. The UE may use random access RNTI (RA-RNTI). The RA-RNTI may be associated with PRACH occasions in which the UE transmits a preamble. For example, the UE may determine the RA-RNTI based on: an OFDM symbol index; a slot index; a frequency domain index; and / or a UL carrier indicator of the PRACH occasions. An example of RA-RNTI may be as follows:

[0212] RA-RNTI= 1 + s_id + 14 x t_id + 14 x 80 x f_id + 14 x 80 x 8 x ul_carrier_id, where s_id may be an index of a first OFDM symbol of the PRACH occasion (e.g., 0 sjd < 14), t_id may be an index of aDocket No.: 25-1005PCTfirst slot of the PRACH occasion in a system frame (e.g., 0 < t_id < 80), f_id may be an index of the PRACH occasion in the frequency domain (e.g., 0 f_id < 8), and ul_carrier_id may be a UL carrier used for a preamble transmission (e.g., 0 for an NUL carrier, and 1 for an SUL carrier).

[0213] The UE may transmit the Msg 3 1313 in response to a successful reception of the Msg 2 1312 (e.g., using resources identified in the Msg 2 1312). The Msg 3 1313 may be used for contention resolution in, for example, the contention-based random access procedure illustrated in FIG. 13A. In some scenarios, a plurality of UEs may transmit a same preamble to a base station and the base station may provide an RAR that corresponds to a UE. Collisions may occur if the plurality of UEs interpret the RAR as corresponding to themselves. Contention resolution (e.g., using the Msg 3 1313 and the Msg 4 1314) may be used to increase the likelihood that the UE does not incorrectly use an identity of another the UE. To perform contention resolution, the UE may include a device identifier in the Msg 3 1313 (e.g., a C-RNTI if assigned, a TC-RNTI included in the Msg 2 1312, and / or any other suitable identifier).

[0214] The Msg 4 1314 may be received after or in response to the transmitting of the Msg 3 1313. If a C-RNTI was included in the Msg 3 1313, the base station will address the UE on the PDCCH using the C-RNTI. If the UE's unique C-RNTI is detected on the PDCCH, the random access procedure is determined to be successfully completed. If a TC-RNTI is included in the Msg 3 1313 (e.g., if the UE is in an RRCJDLE state or not otherwise connected to the base station), Msg 4 1314 will be received using a DL-SCH associated with the TC-RNTI. If a MAC PDU is successfully decoded and a MAC PDU comprises the UE contention resolution identity MAC CE that matches or otherwise corresponds with the CCCH SDU sent (e.g., transmitted) in Msg 3 1313, the UE may determine that the contention resolution is successful and / or the UE may determine that the random access procedure is successfully completed.

[0215] The UE may be configured with a supplementary uplink (SUL) carrier and a normal uplink (NUL) carrier. An initial access (e.g., random access procedure) may be supported in an uplink carrier. For example, a base station may configure the UE with two separate RACH configurations: one for an SUL carrier and the other for an NUL carrier. For random access in a cell configured with an SUL carrier, the network may indicate which carrier to use (NUL or SUL). The UE may determine the SUL carrier, for example, if a measured quality of one or more reference signals is lower than a broadcast threshold. Uplink transmissions of the random access procedure (e.g., the Msg 1 1311 and / or the Msg 3 1313) may remain on the selected carrier. The UE may switch an uplink carrier during the random access procedure (e.g., between the Msg 1 1311 and the Msg 3 1313) in one or more cases. For example, the UE may determine and / or switch an uplink carrier for the Msg 1 1311 and / or the Msg 3 1313 based on a channel clear assessment (e.g., a listen-before-talk).

[0216] FIG. 13B illustrates a two-step contention-free random access procedure. Similar to the four-step contention-based random access procedure illustrated in FIG. 13A, a base station may, prior to initiation ofDocket No.: 25-1005PCTthe procedure, transmit a configuration message 1320 to the UE. The configuration message 1320 may be analogous in some respects to the configuration message 1310. The procedure illustrated in FIG. 13B comprises transmission of two messages: a Msg 1 1321 and a Msg 2 1322. The Msg 1 1321 and the Msg 2 1322 may be analogous in some respects to the Msg 1 1311 and a Msg 2 1312 illustrated in FIG. 13A, respectively. As will be understood from FIGS. 13A and 13B, the contention-free random access procedure may not include messages analogous to the Msg 3 1313 and / or the Msg 4 1314.

[0217] The contention-free random access procedure illustrated in FIG. 13B may be initiated for a beam failure recovery, other SI request, SCell addition, and / or handover. For example, a base station may indicate or assign to the UE the preamble to be used for the Msg 1 1321. The UE may receive, from the base station via PDCCH and / or RRC, an indication of a preamble (e g., ra-Preamblelndex).

[0218] After transmitting a preamble, the UE may start a time window (e.g., ra-ResponseWindow) to monitor a PDCCH for the RAR. In the event of a beam failure recovery request, the base station may configure the UE with a separate time window and / or a separate PDCCH in a search space indicated by an RRC message (e.g., recovery SearchSpaceld). The UE may monitor for a PDCCH transmission addressed to a Cell RNTI (C-RNTI) on the search space. In the contention-free random access procedure illustrated in FIG. 13B, the UE may determine that a random access procedure successfully completes after or in response to transmission of Msg 1 1321 and reception of a corresponding Msg 2 1322. The UE may determine that a random access procedure successfully completes, for example, if a PDCCH transmission is addressed to a C-RNTI. The UE may determine that a random access procedure successfully completes, for example, if the UE receives an RAR comprising a preamble identifier corresponding to a preamble transmitted by the UE and / or the RAR comprises a MAC sub-PDU with the preamble identifier. The UE may determine the response as an indication of an acknowledgement for an SI request.

[0219] FIG. 13C illustrates another two-step random access procedure. Similar to the random access procedures illustrated in FIGS. 13A and 13B, a base station may, prior to initiation of the procedure, transmit a configuration message 1330 to the UE. The configuration message 1330 may be analogous in some respects to the configuration message 1310 and / or the configuration message 1320. The procedure illustrated in FIG. 13C comprises transmission of two messages: a Msg A 1331 and a Msg B 1332.

[0220] Msg A 1331 may be transmitted in an uplink transmission by the UE. Msg A 1331 may comprise one or more transmissions of a preamble 1341 and / or one or more transmissions of a transport block 1342. The transport block 1342 may comprise contents that are similar and / or equivalent to the contents of the Msg 3 1313 illustrated in FIG. 13A. The transport block 1342 may comprise UCI (e.g., an SR, a HARQ ACK / NACK, and / or the like). The UE may receive the Msg B 1332 after or in response to transmitting the Msg A 1331. The Msg B 1332 may comprise contents that are similar and / or equivalent to the contents ofDocket No.: 25-1005PCTthe Msg 2 1312 (e.g., an RAR) illustrated in FIGS. 13A and 13B and / or the Msg 4 1314 illustrated in FIG.13A.

[0221] The UE may initiate the two-step random access procedure in FIG. 13C for licensed spectrum and / or unlicensed spectrum. The UE may determine, based on one or more factors, whether to initiate the two-step random access procedure. The one or more factors may be: a radio access technology in use (e.g., LTE, NR, and / or the like); whether the UE has valid TA or not; a cell size; the UE's RRC state; a type of spectrum (e.g., licensed vs. unlicensed); and / or any other suitable factors.

[0222] The UE may determine, based on two-step RACH parameters included in the configuration message 1330, a radio resource and / or an uplink transmit power for the preamble 1341 and / or the transport block 1342 included in the Msg A 1331. The RACH parameters may indicate a modulation and coding schemes (MCS), a time-frequency resource, and / or a power control for the preamble 1341 and / or the transport block 1342. A time-frequency resource for transmission of the preamble 1341 (e.g., a PRACH) and a time-frequency resource for transmission of the transport block 1342 (e.g., a PUSCH) may be multiplexed using FDM, TDM, and / or CDM. The RACH parameters may enable the UE to determine a reception timing and a downlink channel for monitoring for and / or receiving Msg B 1332.

[0223] The transport block 1342 may comprise data (e.g., delay-sensitive data), an identifier of the UE, security information, and / or device information (e.g., an International Mobile Subscriber Identity (IMSI)). The base station may transmit the Msg B 1332 as a response to the Msg A 1331. The Msg B 1332 may comprise at least one of following: a preamble identifier; a timing advance command; a power control command; an uplink grant (e.g., a radio resource assignment and / or an MCS); a UE identifier for contention resolution; and / or an RNTI (e.g., a C-RNTI or a TC-RNTI). The UE may determine that the two-step random access procedure is successfully completed if: a preamble identifier in the Msg B 1332 is matched to a preamble transmitted by the UE; and / or the identifier of the UE in Msg B 1332 is matched to the identifier of the UE in the Msg A 1331 (e.g., the transport block 1342).

[0224] A UE and a base station may exchange control signaling. The control signaling may be referred to as L1 / L2 control signaling and may originate from the PHY layer (e.g., layer 1) and / or the MAC layer (e.g., layer 2). The control signaling may comprise downlink control signaling transmitted from the base station to the UE and / or uplink control signaling transmitted from the UE to the base station.

[0225] The downlink control signaling may comprise: a downlink scheduling assignment; an uplink scheduling grant indicating uplink radio resources and / or a transport format; a slot format information; a preemption indication; a power control command; and / or any other suitable signaling. The UE may receive the downlink control signaling in a payload transmitted by the base station on a physical downlink control channel (PDCCH). The payload transmitted on the PDCCH may be referred to as downlink controlDocket No.: 25-1005PCTinformation (DCI). In some scenarios, the PDCCH may be a group common PDCCH (GC-PDCCH) that is common to a group of UEs.

[0226] A base station may attach one or more cyclic redundancy check (CRC) parity bits to a DCI in order to facilitate detection of transmission errors. When the DCI is intended for a UE (or a group of the UEs), the base station may scramble the CRC parity bits with an identifier of the UE (or an identifier of the group of the UEs). Scrambling the CRC parity bits with the identifier may comprise Modulo-2 addition (or an exclusive OR operation) of the identifier value and the CRC parity bits. The identifier may comprise a 16-bit value of a radio network temporary identifier (RNTI).

[0227] DCIs may be used for different purposes. A purpose may be indicated by the type of RNTI used to scramble the CRC parity bits. For example, a DCI having CRC parity bits scrambled with a paging RNTI (P-RNTI) may indicate paging information and / or a system information change notification. The P-RNTI may be predefined as “FFFE” in hexadecimal. A DCI having CRC parity bits scrambled with a system information RNTI (SI-RNTI) may indicate a broadcast transmission of the system information. The SI-RNTI may be predefined as " FFFF” in hexadecimal. A DCI having CRC parity bits scrambled with a random access RNTI (RA-RNTI) may indicate a random access response (RAR) A DCI having CRC parity bits scrambled with a cell RNTI (C-RNTI) may indicate a dynamically scheduled unicast transmission and / or a triggering of PDCCH-ordered random access. A DCI having CRC parity bits scrambled with a temporary cell RNTI (TC-RNTI) may indicate a contention resolution (e.g., a Msg 3 analogous to the Msg 3 1313 illustrated in FIG. 13A). Other RNTIs configured to the UE by a base station may comprise a Configured Scheduling RNTI (CS-RNTI), a Transmit Power Control-PUCCH RNTI (TPC-PUCCH-RNTI), a Transmit Power Control-PUSCH RNTI (TPC-PUSCH-RNTI), a Transmit Power Control-SRS RNTI (TPC-SRS-RNTI), an Interruption RNTI (INT-RNTI), a Slot Format Indication RNTI (SFI-RNTI), a Semi-Persistent CSI RNTI (SP-CSI-RNTI), a Modulation and Coding Scheme Cell RNTI (MCS-C-RNTI), and / or the like.

[0228] Depending on the purpose and / or content of a DCI, the base station may transmit the DCIs with one or more DCI formats. For example, DCI format 0_0 may be used for scheduling of PUSCH in a cell. DCI format 0_0 may be a fallback DCI format (e.g., with compact DCI payloads). DCI format 0_1 may be used for scheduling of PUSCH in a cell (e.g., with more DCI payloads than DCI format 0_0). DCI format 1_0 may be used for scheduling of PDSCH in a cell. DCI format 1_0 may be a fallback DCI format (e.g., with compact DCI payloads). DCI format 1_1 may be used for scheduling of PDSCH in a cell (e.g., with more DCI payloads than DCI format 1 _0). DCI format 2_0 may be used for providing a slot format indication to a group of UEs. DCI format 2_1 may be used for notifying a group of UEs of a physical resource block and / or OFDM symbol where the UE may assume no transmission is intended to the UE. DCI format 2_2 may be used for transmission of a transmit power control (TPC) command for PUCCH or PUSCH. DCI format 2_3 may be used for transmission of a group of TPC commands for SRSDocket No.: 25-1005PCTtransmissions by one or more UEs. DCI format(s) for new functions may be defined in future releases. DCI formats may have different DCI sizes, or may share the same DCI size.

[0229] After scrambling a DCI with a RNTI, the base station may process the DCI with channel coding (e.g., polar coding), rate matching, scrambling and / or QPSK modulation. A base station may map the coded and modulated DCI on resource elements used and / or configured for a PDCCH. Based on a payload size of the DCI and / or a coverage of the base station, the base station may transmit the DCI via a PDCCH occupying a number of contiguous control channel elements (CCEs). The number of the contiguous CCEs (referred to as aggregation level) may be 1, 2, 4, 8, 16, and / or any other suitable number. A CCE may comprise a number (e.g., 6) of resource-element groups (REGs). A REG may comprise a resource block in an OFDM symbol. The mapping of the coded and modulated DCI on the resource elements may be based on mapping of CCEs and REGs (e.g., CCE-to-REG mapping).

[0230] FIG. 14A illustrates an example of CORESET configurations for a bandwidth part. The base station may transmit a DCI via a PDCCH on one or more control resource sets (CORESETs). A CORESET may comprise a time-frequency resource in which the UE tries to decode a DCI using one or more search spaces. The base station may configure a CORESET in the time-frequency domain. In the example of FIG.14A, a first CORESET 1401 and a second CORESET 1402 occur at the first symbol in a slot. The first CORESET 1401 overlaps with the second CORESET 1402 in the frequency domain. A third CORESET 1403 occurs at a third symbol in the slot. A fourth CORESET 1404 occurs at the seventh symbol in the slot. CORESETs may have a different number of resource blocks in frequency domain.

[0231] FIG. 14B illustrates an example of a CCE-to-REG mapping for DCI transmission on a CORESET and PDCCH processing. The CCE-to-REG mapping may be an interleaved mapping (e.g., for the purpose of providing frequency diversity) or a non-interleaved mapping (e.g., for the purposes of facilitating interference coordination and / or frequency-selective transmission of control channels). The base station may perform different or same CCE-to-REG mapping on different CORESETs. A CORESET may be associated with a CCE-to-REG mapping by RRC configuration. A CORESET may be configured with an antenna port quasi co-location (QCL) parameter. The antenna port QCL parameter may indicate QCL information of a demodulation reference signal (DMRS) for PDCCH reception in the CORESET.

[0232] The base station may transmit, to the UE, RRC messages comprising configuration parameters of one or more CORESETs and one or more search space sets. The configuration parameters may indicate an association between a search space set and a CORESET. A search space set may comprise a set of PDCCH candidates formed by CCEs at a given aggregation level. The configuration parameters may indicate: a number of PDCCH candidates to be monitored per aggregation level; a PDCCH monitoring periodicity and a PDCCH monitoring pattern; one or more DCI formats to be monitored by the UE; and / or whether a search space set is a common search space set or a UE-specific search space set. A set ofDocket No.: 25-1005PCTCCEs in the common search space set may be predefined and known to the UE. A set of CCEs in the UE-specific search space set may be configured based on the UE's identity (e.g C-RNTI).

[0233] As shown in FIG. 14B, the UE may determine a time-frequency resource for a CORESET based on RRC messages. The UE may determine a CCE-to-REG mapping (e.g., interleaved or non-interleaved, and / or mapping parameters) for the CORESET based on configuration parameters of the CORESET. The UE may determine a number (e.g., at most 10) of search space sets configured on the CORESET based on the RRC messages. The UE may monitor a set of PDCCH candidates according to configuration parameters of a search space set. The UE may monitor a set of PDCCH candidates in one or more CORESETs for detecting one or more DCIs. Monitoring may comprise decoding one or more PDCCH candidates of the set of the PDCCH candidates according to the monitored DCI formats. Monitoring may comprise decoding a DCI content of one or more PDCCH candidates with possible (or configured) PDCCH locations, possible (or configured) PDCCH formats (e.g., number of CCEs, number of PDCCH candidates in common search spaces, and / or number of PDCCH candidates in the UE-specific search spaces) and possible (or configured) DCI formats. The decoding may be referred to as blind decoding. The UE may determine a DCI as valid for the UE, in response to CRC checking (e.g., scrambled bits for CRC parity bits of the DCI matching a RNTI value). The UE may process information contained in the DCI (e.g., a scheduling assignment, an uplink grant, power control, a slot format indication, a downlink preemption, and / or the like).

[0234] The UE may transmit uplink control signaling (e.g., uplink control information (UCI)) to a base station. The uplink control signaling may comprise hybrid automatic repeat request (HARQ) acknowledgements for received DL-SCH transport blocks. The UE may transmit the HARQ acknowledgements after receiving a DL-SCH transport block. Uplink control signaling may comprise channel state information (CSI) indicating channel quality of a physical downlink channel. The UE may transmit the CSI to the base station. The base station, based on the received CSI, may determine transmission format parameters (e.g., comprising multi-antenna and beamforming schemes) for a downlink transmission. Uplink control signaling may comprise scheduling requests (SR). The UE may transmit an SR indicating that uplink data is available for transmission to the base station. The UE may transmit a UCI (e.g, HARQ acknowledgements (HARQ-ACK), CSI report, SR, and the like) via a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH). The UE may transmit the uplink control signaling via a PUCCH using one of several PUCCH formats.

[0235] There may be five PUCCH formats and the UE may determine a PUCCH format based on a size of the UCI (e.g., a number of uplink symbols of UCI transmission and a number of UCI bits). PUCCH format 0 may have a length of one or two OFDM symbols and may include two or fewer bits. The UE may transmit UCI in a PUCCH resource using PUCCH format 0 if the transmission is over one or two symbols and theDocket No.: 25-1005PCTnumber of HARQ-ACK information bits with positive or negative SR (HARQ-ACK / SR bits) is one or two. PUCCH format 1 may occupy a number between four and fourteen OFDM symbols and may include two or fewer bits. The UE may use PUCCH format 1 if the transmission is four or more symbols and the number of HARQ-ACK / SR bits is one or two. PUCCH format 2 may occupy one or two OFDM symbols and may include more than two bits. The UE may use PUCCH format 2 if the transmission is over one or two symbols and the number of UCI bits is two or more. PUCCH format 3 may occupy a number between four and fourteen OFDM symbols and may include more than two bits. The UE may use PUCCH format 3 if the transmission is four or more symbols, the number of UCI bits is two or more and PUCCH resource does not include an orthogonal cover code. PUCCH format 4 may occupy a number between four and fourteen OFDM symbols and may include more than two bits. The UE may use PUCCH format 4 if the transmission is four or more symbols, the number of UCI bits is two or more and the PUCCH resource includes an orthogonal cover code.

[0236] The base station may transmit configuration parameters to the UE for a plurality of PUCCH resource sets using, for example, an RRC message. The plurality of PUCCH resource sets (e.g., up to four sets) may be configured on an uplink BWP of a cell. A PUCCH resource set may be configured with a PUCCH resource set index, a plurality of PUCCH resources with a PUCCH resource being identified by a PUCCH resource identifier (e.g., pucch-Resourceid), and / or a number (e.g. a maximum number) of UCI information bits the UE may transmit using one of the plurality of PUCCH resources in the PUCCH resource set When configured with a plurality of PUCCH resource sets, the UE may select one of the plurality of PUCCH resource sets based on a total bit length of the UCI information bits (e.g., HARQ-ACK, SR, and / or CSI). If the total bit length of UCI information bits is two or fewer, the UE may select a first PUCCH resource set having a PUCCH resource set index equal to “0’’. If the total bit length of UCI information bits is greater than two and less than or equal to a first configured value, the UE may select a second PUCCH resource set having a PUCCH resource set index equal to "1”. If the total bit length of UCI information bits is greater than the first configured value and less than or equal to a second configured value, the UE may select a third PUCCH resource set having a PUCCH resource set index equal to “2”. If the total bit length of UCI information bits is greater than the second configured value and less than or equal to a third value (e.g., 1406), the UE may select a fourth PUCCH resource set having a PUCCH resource set index equal to “3”.

[0237] After determining a PUCCH resource set from a plurality of PUCCH resource sets, the UE may determine a PUCCH resource from the PUCCH resource set for UCI (HARQ-ACK, CSI, and / or SR) transmission. The UE may determine the PUCCH resource based on a PUCCH resource indicator in a DCI (e.g, with a DCI format 1_0 or DCI for 1_1) received on a PDCCH. A three-bit PUCCH resource indicator in the DCI may indicate one of eight PUCCH resources in the PUCCH resource set. Based on the PUCCHDocket No.: 25-1005PCTresource indicator, the UE may transmit the UCI (HARQ-ACK, CSI and / or SR) using a PUCCH resource indicated by the PUCCH resource indicator in the DCI.

[0238] FIG. 15 illustrates an example of a wireless device 1502 in communication with a base station 1504 in accordance with embodiments of the present disclosure. The wireless device 1502 and base station 1504 may be part of a mobile communication network, such as the mobile communication network 100 illustrated in FIG. 1A, the mobile communication network 150 illustrated in FIG. 1B, or any other communication network. Only one wireless device 1502 and one base station 1504 are illustrated in FIG.15, but it will be understood that a mobile communication network may include more than one UE and / or more than one base station, with the same or similar configuration as those shown in FIG. 15.

[0239] The base station 1504 may connect the wireless device 1502 to a core network (not shown) through radio communications over the air interface (or radio interface) 1506. The communication direction from the base station 1504 to the wireless device 1502 over the air interface 1506 is known as the downlink, and the communication direction from the wireless device 1502 to the base station 1504 over the air interface is known as the uplink. Downlink transmissions may be separated from uplink transmissions using FDD, TDD, and / or some combination of the two duplexing techniques.

[0240] In the downlink, data to be sent to the wireless device 1502 from the base station 1504 may be provided to the processing system 1508 of the base station 1504. The data may be provided to the processing system 1508 by, for example, a core network. In the uplink, data to be sent to the base station 1504 from the wireless device 1502 may be provided to the processing system 1518 of the wireless device 1502. The processing system 1508 and the processing system 1518 may implement layer 3 and layer 2 OSI functionality to process the data for transmission. Layer 2 may include an SDAP layer, a PDCP layer, an RLC layer, and a MAC layer, for example, with respect to FIG. 2A, FIG. 2B, FIG. 3, and FIG. 4A. Layer 3 may include an RRC layer as with respect to FIG. 2B.

[0241] After being processed by processing system 1508, the data to be sent to the wireless device 1502 may be provided to a transmission processing system 1510 of base station 1504. Similarly, after being processed by the processing system 1518, the data to be sent to base station 1504 may be provided to a transmission processing system 1520 of the wireless device 1502. The transmission processing system 1510 and the transmission processing system 1520 may implement layer 1 OSI functionality. Layer 1 may include a PHY layer with respect to FIG. 2A, FIG. 2B, FIG. 3, and FIG. 4A. For transmit processing, the PHY layer may perform, for example, forward error correction coding of transport channels, interleaving, rate matching, mapping of transport channels to physical channels, modulation of physical channel, multiple-input multiple-output (MIMO) or multi-antenna processing, and / or the like.

[0242] At the base station 1504, a reception processing system 1512 may receive the uplink transmission from the wireless device 1502. At the wireless device 1502, a reception processing system 1522 mayDocket No.: 25-1005PCTreceive the downlink transmission from base station 1504. The reception processing system 1512 and the reception processing system 1522 may implement layer 1 OSI functionality. Layer 1 may include a PHY layer with respect to FIG. 2A, FIG. 2B, FIG. 3, and FIG. 4A. For receive processing, the PHY layer may perform, for example, error detection, forward error correction decoding, deinterleaving, demapping of transport channels to physical channels, demodulation of physical channels, MIMO or multi-antenna processing, and / or the like.

[0243] As shown in FIG. 15, a wireless device 1502 and the base station 1504 may include multiple antennas. The multiple antennas may be used to perform one or more MIMO or multi-antenna techniques, such as spatial multiplexing (e.g., single-user MIMO or multi-user MIMO), transmit / receive diversity, and / or beamforming. In other examples, the wireless device 1502 and / or the base station 1504 may have a single antenna.

[0244] The processing system 1508 and the processing system 1518 maybe associated with a memory 1514 and a memory 1524, respectively. Memory 1514 and memory 1524 (e.g., one or more non-transitory computer readable mediums) may store computer program instructions or code that may be executed by the processing system 1508 and / or the processing system 1518 to carry out one or more of the functionalities discussed in the present application. Although not shown in FIG. 15, the transmission processing system 1510, the transmission processing system 1520, the reception processing system 1512, and / or the reception processing system 1522 may be coupled to a memory (e.g., one or more non-transitory computer readable mediums) storing computer program instructions or code that may be executed to carry out one or more of their respective functionalities.

[0245] The processing system 1508 and / or the processing system 1518 may comprise one or more controllers and / or one or more processors. The one or more controllers and / or one or more processors may comprise, for example, a general-purpose processor, a digital signal processor (DSP), a microcontroller, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) and / or other programmable logic device, discrete gate and / or transistor logic, discrete hardware components, an onboard unit, or any combination thereof. The processing system 1508 and / or the processing system 1518 may perform at least one of signal coding / processing, data processing, power control, input / output processing, and / or any other functionality that may enable the wireless device 1502 and the base station 1504 to operate in a wireless environment.

[0246] The processing system 1508 and / or the processing system 1518 may be connected to one or more peripherals 1516 and one or more peripherals 1526, respectively. The one or more peripherals 1516 and the one or more peripherals 1526 may include software and / or hardware that provide features and / or functionalities, for example, a speaker, a microphone, a keypad, a display, a touchpad, a power source, a satellite transceiver, a universal serial bus (USB) port, a hands-free headset, a frequency modulated (FM)Docket No.: 25-1005PCTradio unit, a media player, an Internet browser, an electronic control unit (e.g., for a motor vehicle), and / or one or more sensors (e.g., an accelerometer, a gyroscope, a temperature sensor, a radar sensor, a lidar sensor, an ultrasonic sensor, a light sensor, a camera, and / or the like). The processing system 1508 and / or the processing system 1518 may receive user input data from and / or provide user output data to the one or more peripherals 1516 and / or the one or more peripherals 1526. The processing system 1518 in the wireless device 1502 may receive power from a power source and / or may be configured to distribute the power to the other components in the wireless device 1502. The power source may comprise one or more sources of power, for example, a battery, a solar cell, a fuel cell, or any combination thereof. The processing system 1508 and / or the processing system 1518 may be connected to a GPS chipset 1517 and a GPS chipset 1527, respectively. The GPS chipset 1517 and the GPS chipset 1527 may be configured to provide geographic location information of the wireless device 1502 and the base station 1504, respectively.

[0247] FIG. 16A illustrates an example structure for uplink transmission. A baseband signal representing a physical uplink shared channel may perform one or more functions. The one or more functions may comprise at least one of: scrambling; modulation of scrambled bits to generate complex-valued symbols; mapping of the complex-valued modulation symbols onto one or several transmission layers; transform precoding to generate complex-valued symbols; precoding of the complex-valued symbols; mapping of precoded complex-valued symbols to resource elements; generation of complex-valued time-domain Single Carrier-Frequency Division Multiple Access (SC-FDMA) or CP-OFDM signal for an antenna port; and / or the like. In an example, when transform precoding is enabled, a SC-FDMA signal for uplink transmission may be generated. In an example, when transform precoding is not enabled, a CP-OFDM signal for uplink transmission may be generated by FIG. 16A. These functions are illustrated as examples and it is anticipated that other mechanisms may be implemented in various embodiments.

[0248] FIG. 16B illustrates an example structure for modulation and up-conversion of a baseband signal to a carrier frequency. The baseband signal may be a complex-valued SC-FDMA or CP-OFDM baseband signal for an antenna port and / or a complex-valued Physical Random Access Channel (PRACH) baseband signal. Filtering may be employed prior to transmission.

[0249] FIG. 16C illustrates an example structure for downlink transmissions A baseband signal representing a physical downlink channel may perform one or more functions. The one or more functions may comprise: scrambling of coded bits in a codeword to be transmitted on a physical channel; modulation of scrambled bits to generate complex-valued modulation symbols; mapping of the complex-valued modulation symbols onto one or several transmission layers; precoding of the complex-valued modulation symbols on a layer for transmission on the antenna ports; mapping of complex-valued modulation symbols for an antenna port to resource elements; generation of complex-valued time-domain OFDM signal for anDocket No.: 25-1005PCTantenna port; and / or the like. These functions are illustrated as examples and it is anticipated that other mechanisms may be implemented in various embodiments.

[0250] FIG. 16D illustrates another example structure for modulation and up-conversion of a baseband signal to a carrier frequency. The baseband signal may be a complex-valued OFDM baseband signal for an antenna port. Filtering may be employed prior to transmission.

[0251] A wireless device may receive from a base station one or more messages (e.g. RRC messages) comprising configuration parameters of a plurality of cells (e.g. primary cell, secondary cell). The wireless device may communicate with at least one base station (e.g. two or more base stations in dual connectivity) via the plurality of cells. The one or more messages (e.g. as a part of the configuration parameters) may comprise parameters of physical, MAC, RLC, PCDP, SDAP, RRC layers for configuring the wireless device. For example, the configuration parameters may comprise parameters for configuring physical and MAC layer channels, bearers, etc. For example, the configuration parameters may comprise parameters indicating values of timers for physical, MAC, RLC, PCDP, SDAP, RRC layers, and / or communication channels.

[0252] A timer may begin running once it is started and continue running until it is stopped or until it expires. A timer may be started if it is not running or restarted if it is running. A timer may be associated with a value (e.g. the timer may be started or restarted from a value or may be started from zero and expire once it reaches the value). The duration of a timer may not be updated until the timer is stopped or expires (e.g, due to BWP switching). A timer may be used to measure a time period / window for a process When the specification refers to an implementation and procedure related to one or more timers, it will be understood that there are multiple ways to implement the one or more timers. For example, it will be understood that one or more of the multiple ways to implement a timer may be used to measure a time period / window for the procedure. For example, a random access response window timer may be used for measuring a window of time for receiving a random access response. In an example, instead of starting and expiry (or expiration) of a random access response window timer, the time difference between two time stamps may be used. When a timer is restarted, a process for measurement of time window may be restarted. Other example implementations may be provided to restart a measurement of a time window.

[0253] A base station may transmit one or more MAC PDUs to a wireless device. In an example, a MAC PDU may be a bit string that is byte aligned (e.g., aligned to a multiple of eight bits) in length. In an example, bit strings may be represented by tables in which the most significant bit is the leftmost bit of the first line of the table, and the least significant bit is the rightmost bit on the last line of the table. More generally, the bit string may be read from left to right and then in the reading order of the lines. In an example, the bit order of a parameter field within a MAC PDU is represented with the first and most significant bit in the leftmost bit and the last and least significant bit in the rightmost bit.Docket No.: 25-1005PCT

[0254] In an example, a MAC SDU may be a bit string that is byte aligned (e.g., aligned to a multiple of eight bits) in length. In an example, a MAC SDU may be included in a MAC PDU from the first bit onward. A MAC CE may be a bit string that is byte aligned (e.g., aligned to a multiple of eight bits) in length. A MAC subheader may be a bit string that is byte aligned (e.g., aligned to a multiple of eight bits) in length. In an example, a MAC subheader may be placed immediately in front of a corresponding MAC SDU, MAC CE, or padding. A MAC entity may ignore a value of reserved bits in a DL MAC PDU.

[0255] In an example, a MAC PDU may comprise one or more MAC subPDUs. A MAC subPDU of the one or more MAC subPDUs may comprise: a MAC subheader only (including padding); a MAC subheader and a MAC SDU; a MAC subheader and a MAC CE; a MAC subheader and padding, or a combination thereof. The MAC SDU may be of variable size. A MAC subheader may correspond to a MAC SDU, a MAC CE, or padding.

[0256] In an example, when a MAC subheader corresponds to a MAC SDU, a variable-sized MAC CE, or padding, the MAC subheader may comprise: a Reserve field (R field) with a one bit length; an Format filed (F field) with a one-bit length; a Logical Channel Identifier (LCID) field with a multi-bit length; a Length field (L field) with a multi-bit length, indicating the length of the corresponding MAC SDU or variable-size MAC CE in bytes, or a combination thereof. In an example, F field may indicate the size of the L field.

[0257] In an example, a MAC entity of the base station may transmit one or more MAC CEs (e.g., MAC CE commands) to a MAC entity of a wireless device. The one or more MAC CEs may comprise at least one of: a SP ZP CSI-RS Resource Set Activation / Deactivation MAC CE, a PUCCH spatial relation Activation / Deactivation MAC CE, a SP SRS Activation / Deactivation MAC CE, a SP CSI reporting on PUCCH Activation / Deactivation MAC CE, a TCI State Indication for UE-specific PDCCH MAC CE, a TCI State Indication for UE-specific PDSCH MAC CE, an Aperiodic CSI Trigger State Subselection MAC CE, a SP CSI-RS / CSI-IM Resource Set Activation / Deactivation MAC CE, a UE contention resolution identity MAC CE, a timing advance command MAC CE, a DRX command MAC CE, a Long DRX command MAC CE, an SCell activation / deactivation MAC CE (1 Octet), an SCell activation / deactivation MAC CE (4 Octet), and / or a duplication activation / deactivation MAC CE. In an example, a MAC CE, such as a MAC CE transmitted by a MAC entity of the base station to a MAC entity of the wireless device, may have an LCID in the MAC subheader corresponding to the MAC CE. In an example, a first MAC CE may have a first LCID in the MAC subheader that may be different than the second LCID in the MAC subheader of a second MAC CE. For example, an LCID given by 111011 in a MAC subheader may indicate that the MAC CE associated with the MAC subheader is a Long DRX command MAC CE.

[0258] In an example, the MAC entity of the wireless device may transmit to the MAC entity of the base station one or more MAC CEs. The one or more MAC CEs may comprise at least one of: a short buffer status report (BSR) MAC CE, a long BSR MAC CE, a C-RNTI MAC CE, a configured grant confirmationDocket No.: 25-1005PCTMAC CE, a single entry PHR MAC CE, a multiple entry PHR MAC CE, a Short truncated BSR, and / or a Long truncated BSR. In an example, a MAC CE may have an LCID in the MAC subheader corresponding to the MAC CE. In an example, a first MAC CE may have a first LCID in the MAC subheader that may be different than the second LCID in the MAC subheader of a second MAC CE. For example, an LCID given by 111011 in a MAC subheader may indicate that a MAC CE associated with the MAC subheader is a short-truncated command MAC CE.

[0259] A base station may transmit one or more messages to a wireless device. The one or more messages may comprise (or be) the one or more MAC (or PDCP or RLC) PDUs. The wireless device may receive at least one message of the one or more messages via / using one or more PDSCHs / TBs comprising the one or more MAC PDUs.

[0260] The one or more messages may comprise (or be) one or more RRC messages. The one or more RRC messages may comprise at least one of an RRC connection message and / or an RRC establishment message and / or an RRC configuration message and / or an RRC setup message and / or an RRC release message. The one or more RRC messages may comprise at least one RRC reconnection / reestablishment / reconfiguration message.

[0261] The one or more messages may comprise one or more MAC CEs.

[0262] The one or more messages may comprise one or more DCIs. The one or more messages may be scheduled / triggered / indicated by at least one downlink control message (e.g., a DCI or a MAC CE or a downlink command). The one or more messages may comprise one or more downlink information for control.

[0263] The one or more messages may comprise one or more commands (e.g., control commands) for UL / DL communications via at least one cell / serving cell. The one or more messages may comprise one or more configuration parameters. The one or more configuration parameters may correspond to (e.g., configure transmission / reception of) one or more signals / channels. The one or more channels / signals may comprise one or more DL signals / channels, e.g., PDSCH / CSI-RS / PDCCH / SSB (e.g., PSS and / or SSS) / WUS / DL PRS / DL DM-RS / DL PT-RS (wake up signal) or the like. The one or more channels / signals may comprise one or more UL signals / channels, e.g., PUSCH / SRS / PUCCH / WUS / PRACH / UL DM-RS / UL PT-RS or the like.

[0264] The one or more messages may configure the wireless device with a carrier aggregation (CA) operation. In the carrier aggregation (operation), two or more component carriers (CCs) may be aggregated. Each carrier may be also referred to by / as a cell (e.g., serving cell). The cell may be a secondary cell (SCell). The wireless device may, using the technique of CA, simultaneously receive or transmit on one or more CCs, depending on capabilities of the wireless device. The one or more configuration parameters may configure / indicate the one or more CCs. In an example, the wireless deviceDocket No.: 25-1005PCTmay support CA for contiguous CCs and / or for non-contiguous CCs. In some implementations, the one or more CCs may be organized into one or more cells. For example, the one or more CCs may be organized into a combination of a primary cell (PCell) and one or more secondary cells (SCells).

[0265] The one or more configuration parameters may comprise one or more cell configuration parameters. The one or more cell configuration parameters may comprise / configure / indicate configuration parameters of the one or more cells (e.g., ServingCellConfigCommon, ServingCellConfigCommonSIB, and / or ServingCellConfig). The one or more cells may comprise one or more serving cell (equivalently one or more Serving Cells). The one or more cell configuration parameters may be for configuring one or more cells (e.g., the one or more Serving Cells) for UL / DL transmissions / receptions by the wireless device. For example, the one or more cells may comprise a master (or primary) cell group (MSG) and / or a secondary cell group (SCG). The one or more cell configuration parameters may comprise an MSG configuration configuring / indicating at least one cell of the MSG. The one or more cell configuration parameters may comprise an SSG configuration configuring / indicating at least one cell of the SSG.

[0266] In some cases, a cell of the one or more cells may be a primary secondary cell (PSCell), or a primary cell (PCell), or a secondary cell (SCell), or a special cell (SpCell). In some other cases, a cell of the one or more cells may belong to a first cell group corresponding to a primary TAG (pTAG) or a second cell group corresponding to a secondary TAG (sTAG). For example, the one or more configuration parameters may configure the wireless device for multi-cell communication and / or carrier aggregation.

[0267] In an example, the one or more cells may comprise a plurality of one or more SCells. When configured with CA, the base station and / or the wireless device may employ an activation / deactivation mechanism of an SCell to improve battery or power consumption of the wireless device. When the wireless device is configured with the one or more SCells, the base station may activate or deactivate (e.g., via MAC CE or DCI) at least one of the one or more SCells. Upon configuration of an SCell (e.g., via the one or more serving cell configuration parameters), the SCell may be deactivated unless the SCell state associated with the SCell is set to "activated” or “dormant”, via a DCI or MAC CE. The wireless device may activate / deactivate the SCell in response to receiving an SCell Activation / Deactivation MAC CE.

[0268] For example, the one or more configuration parameters may configure the wireless device with uplink (UL) bandwidth parts (BWPs) and / or downlink (DL) BWPs. An initial active BWP may be a first BWP (of the UL BWPs and / or DL BWPs) used for initial access procedure (e.g., a random access procedure to obtain connection to the network) by the wireless device. In paired spectrum (e.g., FDD), the base station and / or the wireless device may independently switch across / between two DL BWPs (of the DL BWPs) and across / between two UL BWPs (of the UL BWPs). In unpaired spectrum (e.g., TDD), the base station and / or the wireless device may simultaneously switch across / between two DL BWPs (of the DL BWPs) and across / between two UL BWPs (of the UL BWPs).Docket No.: 25-1005PCT

[0269] In an example, the one or more configuration parameters may comprise configuration parameters of one or more BWPs (e.g., one or more BWP configuration parameters). The one or more BWPs may be / comprise UL BWPs and / or DL BWPs. The one or more BWP configuration parameters may comprise / configure / indicate the UL BWPs and / or the DL BWPs. The one or more BWP configuration parameters may comprise parameters of a cell (of the one or more cells) and one or more BWPs associated with the cell. Among the one or more BWPs, at least one BWP may be configured as the first / initial active BWP (e.g., BWP 1), one BWP as the default BWP (e.g., BWP 0).

[0270] A MAC entity of the wireless device may apply normal operations on an active (or activated) BWP for an activated serving cell (e.g., the cell). For example, on the activated BWP and via the cell the wireless device may perform at least one of the following: transmitting on UL-SCH (PUSCH transmission); transmitting on PRACH (preamble transmission); monitoring a PDCCH; transmitting PUCCH; receiving DL-SCH (PDSCH reception); and / or (re-) initializing configured uplink grants of configured grant Type 1 or Type 2 according to a stored configuration. The one or more configuration parameters may configure / provide (e.g., via CG-Config of the one or more configuration parameters) configured uplink grants of configured grant Type 1 or Type 2.

[0271] On an inactive (or deactivated or dormant) BWP of the cell (or for each activated serving cell configured with a BWP), the wireless device may perform at least one of the following: not transmit on UL-SCH; not transmit on RACH; not monitor a PDCCH; not transmit PUCCH; not transmit SRS, not receive DL-SCH; clear any configured downlink assignment (e.g., configured / indicated by an SPS-config of the one or more configuration parameters) and the configured uplink grant of configured grant Type 2; and / or suspend any configured uplink grant of configured Type 1.

[0272] A DCI addressed to an RNTI may comprise a CRC of the DCI being scrambled with the RNTI. For detecting / receiving the DCI, the wireless device may monitor one or more PDCCH candidates (or monitoring occasions) for receiving / detecting a PDCCH addressed to (or for) the RNTI. For example, the PDCCH may carry (or be with) the DCI, e.g., the DCI is transported by the PDCCH.

[0273] The one or more configuration parameters may comprise one or more PDCCH configuration parameters for configure / indicate a set of PDCCH candidates for the wireless device to monitor via / in terms of one or more search space sets. For example, the one or more PDCCH configuration parameters may configure / indicate the one or more search space sets. The one or more PDCCH configuration parameters may comprise at least PDCCH-ConfigCommon and / or pdcch-ConfigSIB1 and / or PDCCH-Config.

[0274] A search space set of the one or more search space sets may comprise a common search space (CSS) set, or a UE-specific search space (USS) set. The wireless device may monitor one or more PDCCH candidates (of the set of PDCCH candidates) in one or more of the search space sets.Docket No.: 25-1005PCT

[0275] A search space set may be a TypeO-PDCCH CSS set configured by the pdcch-ConfigSIB1 (e.g., in MIB) or by searchSpaceSIBI in the PDCCH-ConfigCommon or by searchSpaceZero in the PDCCH-ConfigCommon.

[0276] A search space set may be a TypeOA-PDCCH CSS set configured by searchSpaceOtherSystemInformation in the PDCCH-ConfigCommon for a DCI format with CRC scrambled by the SI-RNTI on the primary cell of the MCG.

[0277] A search space set may be a Typel-PDCCH CSS set configured by ra-SearchSpace in the PDCCH-ConfigCommon for a DCI format with CRC scrambled by a RA-RNTI, a MSGB-RNTI, or a TC-RNTI on the primary cell.

[0278] A search space set may be a Type2-PDCCH CSS set configured by pagingSearchSpace in the PDCCH-ConfigCommon for a DCI format with CRC scrambled by a P-RNTI on the primary cell of the MCG.

[0279] A search space set may be a Type3-PDCCH CSS set configured by SearchSpace in the PDCCH-Config with searchSpaceType = common for DCI formats with CRC scrambled by at least one RNTI. The at least one RNTI may comprise one of the following: an INT-RNTI, an SFI-RNTI, a TPC-PUSCH-RNTI, a TPC-PUCCH-RNTI, a TPC-SRS-RNTI, a CI-RNTI, or a power saving RNTI (PS-RNTI) and, only for the primary cell, a C-RNTI, an MCS-C-RNTI, or a CS-RNTI(s).

[0280] A search space set may be a USS set configured by SearchSpace in the PDCCH-Config with searchSpaceType = ue-Specific for DCI formats with CRC scrambled by the C-RNTI, the MCS-C-RNTI, a SP-CSI-RNTI, the CS-RNTI(s), a SL-RNTI, a SL-CS-RNTI, or a SL-L-CS-RNTI

[0281] The wireless device may monitor the one or more PDCCH candidates in one or more CORESETs for detecting one or more DCIs. The one or more PDCCH configuration parameters may configure / indicate the one or more CORESETs. Monitoring the one or more PDCCH candidates may comprise decoding at least one PDCCH candidate of the one or more PDCCH candidates according to the monitored DCI formats. For example, monitoring the one or more PDCCH candidates may comprise decoding (e.g., blind decoding) a DCI content of the at least one PDCCH candidate via possible (or configured) PDCCH location(s), possible (or configured) PDCCH format(s), e.g., number of CCEs, number of PDCCH candidates in CSS set(s), and / or number of PDCCH candidates in the USS(s), and / or possible (or configured) DCI format(s).

[0282] FIG. 17 illustrates an example of UL / DL TDD configuration as per an aspect of an embodiment of the present disclosure. The UL / DL TDD configuration may be (or comprise) a cell-specific UL / DL TDD configuration (e.g., TDD-UL-DL-ConfigCommon). The UL / DL TDD configuration may be (or comprise) a UE-specific UL / DL TDD configuration (e.g., TDD-UL-DL-ConfigDedicated). The one or more configuration parameters may comprise one or more TDD configuration parameters. The one or more TDD configuration parameters may be / comprise the UL / DL TDD configuration shown in FIG. 17.Docket No.: 25-1005PCT

[0283] The one or more TDD configuration parameters may comprise one or more common TDD configuration parameters (e.g., TDD-UL-DL-ConfigCommon). The one or more TDD configuration parameters may comprise one or more U E-specific TDD configuration parameters (e.g., TDD-UL-DL-Configdedicated). The one or more UE-specific TDD configuration parameters may overwrite the one or more flexible symbols / slots of the one or more consecutive slots configured by the TDD-UL-DL-ConfigCommon.

[0284] For a serving cell (of the one or more serving cells), one or more common TDD configuration parameters may indicate / configure slot format(s) of a plurality of slots. FIG. 18 shows examples of slot format in a TDD carrier per an aspect of the present disclosure.

[0285] The one or more TDD configuration parameters may indicate / configure the plurality of slots. The plurality of slots may comprise one or more consecutive slots. The plurality of slots may comprise one or more DL slots / symbols. The plurality of slots may comprise one or more UL slots / symbols. The plurality of slots may comprise one or more flexible slots / symbols.

[0286] A first symbol / slot of the plurality of slots may be an Uplink (‘U7U L) symbol. An UL symbol / slot may be used by the wireless device for uplink transmission(s), e.g., via the serving cell. The one or more DL slots / symbols may comprise the first symbol / slot.

[0287] A second symbol / slot of the plurality of slots may be a downlink ('D7DL). A DL symbol may be used by the wireless device for downlink reception(s), e.g., via the serving cell. The one or more DL slots / symbols may comprise the second symbol / slot.

[0288] In some implementations, a third symbol in a slot of the plurality of slots may be a flexible (‘F’) symbol. The one or more flexible slots / symbols may comprise the third symbol / slot. Slot format / direction of the flexible symbol may be determined (by the wireless device and / or the base station) by other signaling, e.g., DCI format 2_0 and / or UL / DL grants and / or the one or more UE-specific TDD configuration parameters. The format ‘F’ is used by the network to control UL / DL transmission / reception of each wireless device flexibly. For example, the network may assign a symbol with 'F' for a wireless device not to transmit to or receive from a base station, e.g., for interference control and / or power saving purposes.

[0289] The one or more common TDD configuration parameters may comprise at least one of: a reference subcarrier spacing (SCS)refand / or at least one TDD pattern As shown in FIG. 18, the at least one TDD pattern may comprise a first TDD pattern (e.g., patternl) and / or a second TDD pattern (e.g., pattern?). A TDD pattern of the at least one TDD pattern may be a TDD-UL-DL pattern

[0290] A TDD pattern (e.g., the first TDD pattern or the second TDD pattern) of the at least one TDD pattern may comprise at least one of: a slot configuration period of P msec (e.g., a TDD periodicity); a number of slots dslotswith only downlink symbols (e.g., DL slot(s)); a number of downlink symbols dsym(e.g., DL symbol(s)); a number of slots uslotswith only uplink symbols (e.g., UL slot(s)); a number of uplinkDocket No.: 25-1005PCTsymbols usym(e.g., UL symbol(s)). The one or more DL symbols / slots may comprise the number of slots dslotsand / or the number of downlink symbols dsym. The one or more UL symbols / slots may comprise the number of slots uslotsand / or the number of uplink symbols usym.

[0291] FIG. 18 also shows a DL slot, an UL slot, and a slot comprising both UL symbol(s)) and DL symbol(s)). For example, rest of slots / symbols in the TDD pattern (withing the slot configuration period P) not indicated by the TDD pattern as DL / UL slots / symbols may be flexible slots / symbols. The one or more flexible slots / symbols may comprise the rest of slots / symbols in the TDD pattern (withing the slot configuration period P) not indicated by the TDD pattern as DL / UL slots / symbols.

[0292] Corresponding to each TDD pattern of the at least one TDD pattern, a TDD periodicity (e.g., the corresponding slot configuration period of the TDD pattern) may comprise S = P. 2μ(consecutive) slots with SCS configuration pref. The one or more consecutive slots may comprise S1= P1.2μ(consecutive) slots (of the first TDD pattern) and / or S2= P2- (consecutive) slots (of the second TDD pattern). The TDD periodicity P may be a summation of a first TDD periodicity P (of the first TDD pattern) and a second TDD periodicity P2(of the first TDD pattern), e.g., P = P + P2.

[0293] From Si slots (i=1 corresponding to the first TDD pattern or i=2 corresponding to the second TDD pattern), a first / initial / starting / earliest dsiotsslots may comprise the one or more DL slots / symbols. From Stslots, a last / final / ending / latest uslotsslots may comprise the one or more UL slots / symbols. A dsymsymbols after the first dsiotsslots may comprise the one or more DL symbols. A usymsymbols before the last uslotsslots may comprise the one or more UL symbols. A remaining (S — dslots—usiots)-Nsymb ~ ^sym ~usym symbols may comprise the one or more flexible symbols / slots.

[0294] As shown in FIG. 17, the one or more UE-specific TDD configuration parameters may comprise at least one of: one or more UE-specific slot configurations (e.g., slotSpecificConfigurationsToAddModList and / or slotSpecificConfigurationsToReleaseList) and / or a slot index for a slot (e.g., slotindex).

[0295] A UE-specific slot configuration (e.g., TDD-UL-DL-SlotConfig) of the one or more UE-specific slot configurations may configure / indicate one or more symbols (e.g., symbols) of a slot with the slot index. The one or more symbols (N symbols) may be configured as flexible symbols by the one or more common TDD configuration parameters. The one or more flexible symbols / slots may comprise the one or more symbols (e.g., symbols) indicated by the UE-specific slot configuration.

[0296] The UE-specific slot configuration may indicate whether the one or more symbols are all DL symbols (e.g., allDownlink) or all UL symbols (e.g., allUplink). The UE-specific slot configuration may (via nrofDownlinkSymbols) indicate one or more first symbols (N1 symbols) of the one or more symbols are DL symbols. The UE-specific slot configuration may (via nrofUplinkSymbols) indicate one or more second symbols (W2 symbols) of the one or more symbols are UL symbols. For example, N-N1-N2 reminingDocket No.: 25-1005PCTsymbols may be flexible symbols. The one or more DL symbols / slots may comprise the one or more first symbols (N1 symbols). The one or more UL symbols / slots may comprise the one or more second symbols (N2 symbols). The one or more flexible symbols / slots may comprise N-N1-N2 remining symbols.

[0297] Using / based on the one or more TDD configuration parameters, the wireless device may determine the slot format of each slot / symbol of the plurality of slots. The plurality of slots may comprise a plurality of symbols. Using / based on the one or more UE-specific TDD configuration parameters, the wireless device may determine a symbol format of each symbol of the plurality of slots. The symbol format may be the slot format.

[0298] In some implementations, the one or more configuration parameters may comprise / indicate a slot format indicator (e.g., SlotFormatlndicator). The one or more configuration parameters may comprise / indicate an SFI-RNTI by sfi-RNTI and with a payload size of DCI format 2_0 by dci-PayloadSize. The one or more configuration parameters may configure a plurality of slot format combinations (e.g., slotFormatCombToAddModList and slotFormatCombToReleaseList) of a cell.

[0299] A base station may indicate a slot format combination of the plurality of slot format combinations via a DCI format 2_0 with a CRC scrambled the SFI-RNTI. The DCI format 2_0 may notify a group of wireless devices one or more slot formats (corresponding to the plurality of slot format combinations). In an example, a slot format may be identified by a corresponding format index. Each symbol in the slot may be a downlink (‘D’) symbol and / or an uplink (‘ U’) symbol and / or a flexible (‘F’) symbol. A slot format 0 may comprise of all downlink (‘D’) symbols. For example, a slot format 1 may comprise of all uplink (‘ U’) symbols. For example, A slot format 55 may comprise of two downlink (‘D’) symbols, followed by three flexible (‘F’) symbols, followed by three uplink ( ) symbols, followed by six downlink (‘D’) symbols.

[0300] The one or more slot formats may be predefined for the wireless device.

[0301] The one or more configuration parameters may configure / indicate the one or more slot formats.

[0302] An SFI-index field value in the DCI format 2_0 may indicate to a wireless device a slot format for a slot of the one or more consecutive slots. For each serving cell (of the one or more serving cells), the one or more configuration parameters may further indicate at least one of the following: an identity of the serving cell; and / or a location of an SFI-index field in the DCI format 2_0; and / or at least one slot format combination (e.g, slotFormatCombinations) of the plurality of slot format combinations.

[0303] For example, a slot format combination may comprise at least one of: at least one slot format of the one or more slot formats (e.g., slotFormats) for the slot format combination; and / or a mapping for the slot format to a corresponding SFI-index field value in the DCI format (e.g., siotFormatCombinationld) and / or at least one reference SCS configuration.Docket No.: 25-1005PCT

[0304] The wireless device may use one or more TDD rules when communicating with a base station in a TDD carrier / spectrum (e.g., during the one or more consecutive slots). FIG. 18 also shows some examples of the one or more TDD rules.

[0305] According to / based on the one or more TDD rules, a wireless device may consider (DL) symbols in a DL slot of the plurality of slots to be avail able / allowable for DL receptions. The wireless device may receive DL signals / channels (e.g., PDSCH / SSB / PDCCH or CSI-RS) during / in the DL symbols of the DL slot. The wireless device may not transmit UL signals / channels (even partially) during / in DL symbols of the DL slot.

[0306] According to / based on the one or more TDD rules, a wireless device may consider (UL) symbols in an UL slot of the plurality of slots to be available / allowable for UL transmissions. The wireless device may transmit UL signals / channels (e.g., PUSCH, PUCCH, PRACH, or SRS) during / in the UL symbols of the slot. The wireless device may not receive DL signals / channels (even partially) during / in the UL symbols of the UL slot.

[0307] The one or more configuration parameters may not configure a wireless device to monitor PDCCH for the DCI format 2_0. According to / based on the one or more TDD rules, for a set of (flexible) symbols of a slot (flexible slot) of the plurality of slots, the wireless device may receive DL signals / channels (e.g., PDSCH or CSI-RS) in the set of symbols of the slot. For example, the wireless device receives a DCI scheduling / indicating / triggering the reception of the DL signals / channels in during the set of flexible symbols.

[0308] The one or more configuration parameters may not configure a wireless device to monitor PDCCH for the DCI format 2_0. According to / based on the one or more TDD rules, for a set of (flexible) symbols of a slot (flexible slot) of the plurality of slots, the wireless device may transmit UL signals / channels (e.g., PUSCH, PUCCH, PRACH, or SRS) in the set of symbols of the slot. For example, the wireless device may receive a DCI, a RAR UL grant, fallbackRAR UL grant, or successRAR scheduling / indicating / triggering the transmission of the UL signals / channels in during the set of flexible symbols.

[0309] According to / based on the one or more TDD rules, if a wireless device is configured by higher layers (e.g., RRC / MAC) to receive a DL signal / channel (e.g., PDCCH, or a PDSCH, or a CSI-RS, or a DL PRS) in a set of symbols of the plurality of slots, the wireless device may receive the DL signal / channel based on not detect / receive a DCI format scheduling / triggering / indicating a transmission of an UL signal / channel (e.g., a PUSCH, a PUCCH, a PRACH, or a SRS) in at least one symbol of the set of symbols. Based on detecting / receiving the DCI format scheduling / triggering / indicating the transmission of the UL signal / channel in at least one symbol of the set of symbols of the slot, the wireless device may not receive the DL signal / channel (e.g., PDCCH, or a PDSCH, or a CSI-RS, or a DL PRS) in the set of symbolsDocket No.: 25-1005PCTof the slot. The wireless device may transmit the UL signal / channel (e.g., a PUSCH, a PUCCH, a PRACH, or an SRS) in at least one symbol of the set of symbols of the slot.

[0310] According to / based on the one or more TDD rules, for a set of flexible symbols of a flexible slot of the plurality of slots that are indicated, the wireless device may not expect to receive both dedicated higher layer parameters configuring transmission from the wireless device (e.g., Type1 / 2 CG PUSCH, PRACH, MsgA PUSCH, SRS, PUCCH) in the set of flexible symbols and dedicated higher layer parameters configuring reception by the wireless device (e.g., SPS PDSCH, P / SP CSI-RS, SSB, CORESET) in the set of flexible symbols. For example, the one or more configuration parameters may not configure CG-PUSCH transmission occasions and SPS PDSCH reception occasions in the set of flexible symbols.

[0311] According to / based on the one or more TDD rules, for a set of symbols of a slot (of the plurality of slots) indicated to a wireless device for reception of SS / PBCH blocks (SSBs), the wireless device may not transmit UL signals / channels (e.g., PUSCH, PUCCH, PRACH) in the slot if the transmission occasion of the UL signal / channel overlaps with any symbol from the set of symbols. The wireless device may not transmit SRS in the set of symbols of the slot. For example, the one or more TDD configuration parameters do not indicate the set of symbols of the slot as uplink The set of symbols for receiving the SSB may be configured by the one or more configuration parameters (e.g., by ssb-PositionsIn Burst in SIB1 or by ssb-PositionsInBurst in ServingCellConfigCommon).

[0312] According to / based on the one or more TDD rules, for a set of symbols of a slot (of the plurality of slots) corresponding to a valid PRACH occasion and N_gap symbols before the valid PRACH occasion, the wireless device may not receive the DL signals / channels (e.g., PDCCH, PDSCH, or CSI-RS) in the slot if the reception of the DL signal / channel overlaps with any symbol from the set of symbols. According to / based on the one or more TDD rules, the one or more TDD configuration parameters may not configure the set of symbols of the slot as downlink.

[0313] According to / based on the one or more TDD rules, for a set of symbols of a slot (of the plurality of slots) indicated to a wireless device by the pdcch-ConfigSIB1 in M / Bfor a CORESET for TypeO-PDCCH CSS set, the wireless device does not expect the set of symbols to be indicated as uplink by the one or more TDD configuration parameters.

[0314] According to / based on the one or more TDD rules, if a DCI schedules / configures / indicates PDSCH reception(s) over multiple slots (e.g., multi-PDSCH receptions or repetitions of a PDSCH), the wireless device may not receive a PDSCH (of the multi-PDSCHs) in a slot of the multiple slots the plurality of slots. The wireless device may not receive a repetition of the PDSCH in the slot. For example, the one or more consecutive slots comprise the multiple slots. The slot may comprise at least one UL symbol configured / indicated by the one or more TDD configuration parameters.Docket No.: 25-1005PCT

[0315] According to / based on the one or more TDD rules, if a DCI schedules / configures / indicates PUSCH transmission(s) over multiple slots (e.g., multi-PUSCH transmissions or repetitions of a PUSCH), the wireless device may not transmit a PUSCH (of the multi-PUSCHs) in a slot of the multiple slots the plurality of slots. The plurality of slots may comprise a plurality of symbols. The wireless device may not transmit a repetition of the PUSCH in the slot. For example, the one or more consecutive slots comprise the multiple slots. The slot may comprise at least one DL symbol configured / indicated by the one or more TDD configuration parameters.

[0316] A wireless device may transmit one or more capability messages (e.g., one or more UE capability messages) to a base station. The one or more UE capability messages may also refer to by one or more UE-capability messages. The one or more UE capability messages may comprise at least one set of capabilities. The at least one set of capabilities may comprise a first set of capabilities. The first set of capabilities may comprise a first plurality of UE capabilities. The first plurality of UE capabilities may allow the base station to properly configure the wireless device via the one or more configuration parameters. The first set of capabilities may correspond to / applicable for a TDD carrier or a FDD carrier. Some capabilities of the first set of capabilities may correspond to / applicable for a sub-band fullduplex (SBFD) operation withing / in the TDD carrier / spectrum.

[0317] For example, the first set of capabilities may comprise a first capability (e.g., ue-SpecificUL-DL-Assignment). The first capability may indicate whether the wireless device supports dynamic determination of UL and DL link direction and slot format (e.g, of a flexible slot / symbol of the one or more consecutive slots), e.g., based on Layer 1 scheduling DCI and the UE-specific UL / DL configurations (TDD-UL-DL-ConfigDedicated). For example, the one or more TDD configuration parameters may comprise the one or more UE-specific TDD configuration parameters based on the first set of capabilities comprising the first capability.

[0318] When the first set of capabilities does not comprise the first capability, the wireless device may not expect to receive the one or more UE-specific TDD configuration parameters.

[0319] When the first set of capabilities does not comprise the first capability, the wireless device may not expect to dynamically determine UL and DL link direction and slot format (e.g., of a flexible slot / symbol of the one or more consecutive slots), e.g., based on Layer 1 scheduling DCI (e.g., DCI format 2_0 and / or scheduling DCI) and the UE-specific UL / DL configurations (TDD-UL-DL-ConfigDedicated).

[0320] The semi-static UL / DL link direction may be based on the one or more cell-specific TDD configuration parameters. For example, the one or more cell-specific TDD configuration parameters may (in a semi-static (SS) manner / approach) indicate a slot / symbol #1 as DL (SS-DL), a slot / symbol #2 as flexible (SS-F), a slot / symbol #3 as flexible (SS-F), and slot / symbol #4 as UL (SS-UL).Docket No.: 25-1005PCT

[0321] The dynamic UL / DL link direction (e.g., D-LD) may be based on the one or more UE-specific TDD configuration parameters. For example, the one or more UE-specific TDD configuration parameters may indicate the slot / symbol #2 as DL (e.g., D-LD: DL). The wireless device may, based on the first set of capabilities indicating the first capability, determine a link direction corresponding to the slot / symbol #2 being DL. The wireless device may, in response to the one or more UE-specific TDD configuration parameters indicating the slot / symbol #2 as DL, receive a DL signal / channel during the slot / symbol #2 using RBs of an active DL BWP. The receiving the DL signal / channel may further be based on the one or more TDD rules. When the first set of capabilities do not comprise the first capability, the wireless device may, in response to the UE-specific TDD configuration parameters indicating the slot / symbol #2 as DL, may avoid determining the link direction of the slot / symbol #2 as DL.

[0322] The dynamic UL / DL link direction may further be based on the DCI. The DCI may be a DCI format 2_0, indicating the one or more slot formats (e.g., via one or more slot format indicators). For example, the DCI may indicate the slot / symbol #3 as UL (e.g., indicated based on a slot format of the one or more slot formats). The wireless device may determine D-LD as UL. The DCI may, for example, be the scheduling DCI The scheduling DCI may indicate / trigger / schedule a transmission during the slot / symbol #3. The wireless device may, based on the first set of capabilities indicating the first capability, determine a link direction corresponding to the slot / symbol #3 being UL. The wireless device may, in response to the DCI indicating the slot / symbol #3 as UL, transmit an UL signal / channel during the slot / symbol #3 using RBs of an active UL BWP. The transmitting the UL signal / channel may further be based on the one or more TDD rules. When the first set of capabilities does not comprise the first capability, the wireless device may, in response to the DCI indicating the slot / symbol #3 as UL, may avoid determining the link direction of the slot / symbol #3 as UL.

[0323] For example, the first set of capabilities may comprise a second capability (e.g., partialCancellationPUCCH-PUSCH-PRACH-TX-r16). The second capability may indicate whether the wireless device support a partial cancellation of the configured PUCCH or PUSCH or PRACH transmission in set of symbols of a slot (of the one or more consecutive slots) due to at least one of the following: a detection of a DCI format 2_0 with a slot format value other than 255 that indicates a slot format with a subset of symbols from the set of symbols as downlink or flexible; and / or a DCI format 2_0 being configured but not detected, when either a subset of symbols from the set of symbols are indicated as flexible by the one or more TDD configuration parameters; and / or a detection of a scheduling DCI indicating to the UE to receive CSI-RS or PDSCH in a subset of symbols from the set of symbols. The scheduling DCI may be at least one of DCI format 1 _0, DCI format 1_1, DCI format 1_2 or DCI format 0_1 and DCI format 0_2Docket No.: 25-1005PCT

[0324] For example, the one or more configuration parameters configure a wireless device to transmit configured SRS (via SRS-config of the one or more configuration parameters), or PUCCH (via PUCCH-config of the one or more configuration parameters and / or PUCCH-configCommon of the one or more configuration parameters), or PUSCH (via PUSCH-config of the one or more configuration parameters and / or PUSCH-configCommon of the one or more configuration parameters), or PRACH (e.g., RACH-ConfigCommon and / or RACH-Con fig Dedicated and / or RACH-ConfigGeneric of the one or more configuration parameters) in the set of symbols of the slot. The wireless device receives / detects the scheduling DCI (indicating CSI-RS / PDSCH reception) in the subset of symbols.

[0325] According to / based on the one or more TDD rules and the first set of capabilities not comprising the second capability (e.g., partial cancellation), the wireless device may not cancel the transmission of the PUCCH or PUSCH or PRACH in the set of symbols if a first / initial / starting symbol in the set occurs within a first timing gap (e.g., Tproc,2) relative to a last / final / ending / latest symbol of a PDCCH reception providing / carrying the scheduling DCI. The first timing gap may be based on a PUSCH preparation / processing time. In the present disclosure, the first timing gap may interchangeably be referred to by a PUSCH processing time and / or a PUSCH preparation time and / or a first timing window and / or a first duration and / or a first window and / or a first timing distance or the like. Based on the first set of capabilities not comprising the second capability and the first / initial / starting symbol in the set occurs before the first timing gap from the last / final / ending / latest symbol of the PDCCH reception, the wireless device may cancel the PUCCH, or the PUSCH, or an actual repetition of the PUSCH or the PRACH transmission in the set of symbols. For example, the first timing gap may be Tproc,2.

[0326] According to / based on the one or more TDD rules and the first set of capabilities comprising the second capability (e.g., partial cancellation), the wireless device may not cancel the transmission of the PUCCH or PUSCH or PRACH in symbols from the set of symbols that occur within the first timing gap relative to the last / final / ending / latest symbol of the PDCCH reception. Based on the first set of capabilities comprising the second capability the first / initial / starting symbol in the set occurs before the first timing gap from the last / final / ending / latest symbol of the PDCCH reception, the wireless device may cancel the PUCCH, or the PUSCH, or an actual repetition of the PUSCH or the PRACH transmission in remaining symbols from the set of symbols.

[0327] According to / based on the one or more TDD rules, the wireless device may not cancel the transmission of SRS in symbols from the subset of symbols that occur within the first timing gap relative to the last symbol of the PDCCH reception. The wireless device may cancel the SRS transmission in the remaining symbols from the subset of symbols.

[0328] In the present disclosure, a PUSCH transmission procedure (e.g., for transmission of a PUSCH transmission) may be based on the one or more TDD rules. The PUSCH transmission procedure mayDocket No.: 25-1005PCTcomprise / be a PUSCH processing procedure. The PUSCH transmission procedure may be for transmitting PUSCHs by the wireless device and / or receiving the PUSCHs by the base station.

[0329] In the present disclosure, a PDSCH reception procedure (e.g., for receiving a PDSCH) may be based on the one or more TDD rules. The PDSCH reception procedure may comprise / be a PDSCH processing procedure. The PDSCH reception procedure may be for receiving PDSCHs by the wireless device and / or transmitting the PDSCHs by the base station. In some examples of the present disclosure, the PDSCH reception may be associated with no repetitions of the PDSCH. In some other examples of the present disclosure, the PDSCH reception may comprise (or be associated with) at least one repetition (e.g., repetition 0, repetition 1,...) of the PDSCH. Receiving the PDSCH may comprise receiving repetitions (if any) of the PDSCH.

[0330] The first set of capabilities may comprise of a third capability (e.g., pdsch-ProcessingType2') of the first set of capabilities. The third capability (e.g., pdsch-ProcessingType2) may indicate whether the wireless device supports a PDSCH processing capability 2.

[0331] The wireless device may support / indicate the third capability only if all serving cells (of the one or more serving cells) are self-scheduled and if all the serving cells in one band on which the network configured processingType2 use the same subcarrier spacing. The third capability may comprise at least one the following parameters: fallback and / or differentTB-PerSlot. The parameter fallback of the third capability may indicate whether the wireless device supports the PDSCH processing capability 2 when the number of configured carriers (CCs) is larger than a threshold (e.g., numberOfCarriers) for a reported value of differentTB-PerSlot of the third capability. If fallback = 'sc', the wireless device may support the PDSCH processing capability 2 on a lowest cell index among the configured carriers (e.g., one or more cells) in the band where the value is reported. If fallback = ’cap1 -only', the wireless device may support may only the PDSCH processing capability 1, in the band where the value is reported. The parameter differentTB-PerSlot of the third capability may indicate whether the wireless device supports the PDSCH processing type 2 for 1, 2, 4 and / or 7 unicast PDSCHs for different transport blocks per slot per CC. When the wireless device supports the PDSCH processing type 2 for 1, 2, 4 and / or 7 unicast PDSCHs for different transport blocks per slot per CC, the parameter differentTB-PerSlot of the third capability may further indicate up to which number of CA serving cells (e.g., which cell or CC) the wireless device supports that number of unicast PDSCHs for different TBs. The wireless device may include at least one of numberOfCarriers for 1, 2, 4 or 7 transport blocks per slot in this field if pdsch-ProcessingType2 is indicated.

[0332] FIG. 19A, FIG. 19B, and FIG. 19C show examples of PDSCH receptions per aspects some embodiments of the present disclosure. As shown in FIG. 19A and FIG. 19B, the wireless device may receive, e.g., via a serving cell (e.g., cell 1 or CC1) and from the base station, a PDSCH (carrying / comprising a transport block TB). In the example of FIG. 19A, the scheduling DCI (e.g., DCI #1)Docket No.: 25-1005PCTmay indicate / schedule the PDSCH reception (e.g., an initial transmission of the TB). In the example of FIG.19B, the scheduling DCI (e.g., DCI #2) may indicate / schedule a retransmission of the TB via a PDSCH #2.

[0333] In the present disclosure, when maxNrofCodeWordsScheduledByDCI in PDSCH-config indicates that two codeword transmission is enabled, then one of the two transport blocks is disabled by DCI format 1_1 or 1_3 if IMCS= 26 and if rvid= 1 for the corresponding transport block. When the maxNrofCodeWordsScheduledByDCI in pdsch-ConfigMulticast indicates that two codeword transmission is enabled, then one of the two transport blocks is disabled by DCI format 4_2 if IMCS= 26 and if rvid = 1 for the corresponding transport block. When the one or more configuration parameters indicate / comprise pdsch-TimeDomainAllocationListForMultiPDSCH, either the first or the second transport block of all scheduled PDSCHs is disabled by the DCI format 1_1 if IMCS = 26 and if rvid = 2 for the corresponding transport block of all scheduled PDSCHs. If both transport blocks are enabled, transport block 1 and 2 are mapped to codeword 0 and 1 respectively. If only one transport block is enabled, then the enabled transport block is always mapped to the first codeword.

[0334] The PDSCH may be a dynamically scheduled PDSCH reception (e.g., via a downlink assignment provided by the DCI#1 ), e.g., in at least one DL symbol / slot of the one or more DL symbols / slots. The downlink assignment for reception of the PDSCH may be a dynamic assignment. The PDSCH#2 may also be a dynamically scheduled reception (e.g., via a second downlink assignment provided by the DCI#2), e.g., in at least one DL symbol / slot of the one or more DL symbols / slots. The wireless device may receive the scheduling DCI (e.g., DCI #1 or DCI #2) via the serving cell.

[0335] A dynamic assignment indicated by the scheduling DCI may comprise / be frequency resources (e.g., “Frequency domain resource assignment' field of the DCI#1 and / or DCI#2) and / or VRB-to-PRB mapping and / or rate matching indicator for receiving the PDSCH / PDSCH#2. The scheduling DCI may indicate time domain resources (e.g., via a 'Time domain resource assignment' field of the DCI#1 and / or the DCI#2). The time domain resources may indicate a row of a time domain resource allocation table (TDRA) configured by the one or more configuration parameters.

[0336] The scheduling DCI (e.g., DCI #1 or DCI #2) may further indicate a HARQ-ACK timing K1 (e.g., via a field PDSCH-to-HARQ_feedback timing indicator of the scheduling DCI). The wireless device may, based on the HARQ-ACK timing K1 and one or more PUCCH resources (configured / indicated by the one or more configuration parameters), determine a PUCCH (transmission occasion and / or resource) for transmitting a HARQ-ACK information (or bits) correspond to the PDSCH (or PDSCH #2).

[0337] For example, when the wireless device successfully / correctly receives the PDSCH / TB (e.g., successfully / correctly decodes the TB indicated by the PDSCH), the HARQ-ACK information may comprise a positive value (e.g., acknowledgment, e.g., ACK). Alternatively, when the wireless device unsuccessfully / incorrectly receives the PDSCH / TB (e.g., unsuccessfully / incorrectly decodes the TBDocket No.: 25-1005PCTindicated by the PDSCH), the HARQ-ACK information may comprise a positive value (e.g., acknowledgment, e.g., ACK). In response to unsuccessfully / incorrectly receiving the PDSCH / TB, the base station may transmit the DCI #2 for scheduling / indicating the retransmission of the TB via the PDSCH #2.

[0338] In one example, the transmission of the PUCCH is via the serving cell (e.g., the cell 1 of the one or more cells or the CC1 of the one or more CCs).

[0339] In another example, the transmission of the PUCCH is via a second serving cell (e.g., a cell 2 of the one or more cells or a CC2 of the one or more CCs).

[0340] A PDSCH processing time (e.g., for processing / receiving the PDSCH and / or the PDSCH #2 in FIG.19A and / or FIG. 19B) may be considered (by the wireless device and / or the base station) to determine a first / initial / starting / earliest uplink symbol of the PUCCH comprising the HARQ-ACK information of the PDSCH. In an example, the first uplink symbol of the PUCCH may be after (or not start earlier than) a second timing gap (e.g., Tproc,1) after a last / final / ending / latest symbol of the PDSCH reception associated with the HARQ-ACK information. In an example, the first uplink symbol of the PUCCH carrying the HARQ-ACK information may start no earlier than at / in symbol L1. Symbol L1 may be a next uplink symbol with its Cyclic Prefix (CP) starting after the second time gap Tproc,1after the end of the last symbol of the PDSCH.

[0341] The wireless device may determine the second timing gap Tproc,1based on the PDSCH processing capability 2 and / or a PDSCH processing capability 1. The PDSCH processing capability 1 may indicate a first value (in a number of symbols) associated with a numerology (e.g., of the serving cell or a DL carrier or a DL BWP or a PDSCH). The first value may be 8 or 10 or 17 or 20 or 80 or 160 respectively for numerology (e.g., PIPDSCH) of 0, 1, 2, 3, 5, 6. The PDSCH processing capability 2 may indicate a second value (in a number of symbols) associated with a numerology (e.g., of the serving cell or a DL carrier or a DL BWP or a PDSCH). The second value may be 3 or 4.5 or 9 respectively for numerology pi (e.g., IJPDSCH) of 0, 1, 2.

[0342] In the present disclosure, the second timing gap may interchangeably be referred to by a PDSCH processing time and / or a PDSCH preparation time and / or a second timing window and / or a second duration and / or a second window and / or a second timing distance or the like.

[0343] When the first set of capabilities comprise the third capability (e.g., for the wireless device that supports the PDSCH processing capability 2 on a given cell), the processing time according to the PDSCH processing capability 2 is applied for processing the PDSCH if the one or more configuration parameters (e.g, PDSCH-ServingCellConfig) set / indicate parameter processingType2Enabled to 'enable'.

[0344] The wireless device may not expect to transmit the PUCCH carrying the HARQ-ACK information for the PDSCH if an uplink switching gap is triggered for the PUCCH and the first uplink symbol of the PUCCH starts earlier than the duration of Tswitch+ Tproc,1from the last symbol of the PDCCH. In an example, Tswitchmay equal to a switching gap duration (e.g., WTx1. Tx2) for switching an uplink switching.Docket No.: 25-1005PCTFor example, the uplink switching may comprise switching from a first CC (the CC1) to a second CC (the CC2). For example, the uplink switching may comprise switching from the service cell (the cell 1) to a second serving cell (the cell 2).

[0345] The first set of capabilities may comprise a fourth capability (e.g., pdsch-ProcessingType2-Limited) of the first set of capabilities. The fourth capability may indicate whether the wireless device supports the PDSCH processing capability 2 (e.g., the third capability) with a scheduling limitation for SCS 30kHz (e.g., μPDSCH=1). The fourth capability may indicate differentTB-PerSlot-SCS-30kHz. The differentTB-PerSlot-SCS-30kHz may indicate the number of different TBs per slot (for the SCS 30kHz).

[0346] The wireless device may support / indicate the fourth capability (e.g., the limited processing capability 2) only if one carrier (e.g., the CC1) is configured in the band, independent of the number of carriers configured in the other bands; 2) a maximum bandwidth of the PDSCH is 136 PRBs; 3) N1 (e.g., the second value) be 3.5 symbols for SCS 30 kHz, or μPDSCH=1

[0347] When the first set of capabilities comprise the fourth capability (e.g., the limited processing capability 2 with scheduling limitation when μPDSCH= 1), if the scheduled RB allocation of the PDSCH exceeds 136 RBs, the wireless device may default to the PDSCH processing capability 1 (e.g., capability 1 processing time) for processing the PDSCH. The wireless device may skip decoding first PDSCHs with last symbol within 10 symbols before the start of a PDSCH that is scheduled to follow the PDSCH processing capability 2, if any of the first PDSCHs are scheduled with more than 136 RBs with 30kHz SCS and following the PDSCH processing capability 1 (e.g., Capability 1 processing time).

[0348] For example, the first set of capabilities may comprise a fifth capability (e.g., pdsch-ProcessingTypel-DifferentTB-PerSlot). The fifth capability may indicates / defines whether the wireless device capable of the PDSCH processing time capability 1 supports reception of up to two, four or seven unicast PDSCHs for several transport blocks with PDSCH scrambled using C-RNTI, TC-RNTI, MCS-C-RNTI or CS-RNTI in one serving cell within the same slot per CC that are multiplexed in time domain only.

[0349] For example, the first set of capabilities may comprise a sixth capability (e.g., cbgPDSCH-ProcessingType2-DifferentTB-PerSlot-r16). The sixth capability may indicate / defines whether the wireless device capable of the PDSCH processing time capability 2 (e.g., the third capability) supports code block group (CBG) based reception with one or with up to two or with up to four or with up to seven unicast PDSCHs per slot per CC.

[0350] For example, the first set of capabilities may comprise a seventh capability (e.g., cbgPDSCH-ProcessingType1-DifferentTB-PerSlot-r16). The seventh capability may indicate / defines whether the wireless device capable of the PDSCH processing time capability 1 supports code block group (CBG) based reception with one or with up to two or with up to four or with up to seven unicast PDSCHs per slot per CC.Docket No.: 25-1005PCT

[0351] FIG. 19C shows an example of SPS downlink receptions. The one or more configuration parameters (e.g., via BWP-DownlinkDedicated) may comprise one or more semi-persistent scheduling (SPS) configuration parameters. For example, the one or more SPS configuration parameters may comprise at least one (e.g., 8) SPS configuration (SPS-Config).

[0352] A SPS configuration of the at least one SPS configurations may be a unicast SPS configuration or a multicast (or interchangeably broadcast / groupcast) SPS configuration. As also shown in FIG. 19C, the SPS configuration configures the wireless device for receiving DL SPS (e.g., SPS PDSCH) in downlink. The SPS configuration may comprise at least one of the following: SPS configuration ID / index; and / or a periodicity of the corresponding DL SPS; and / or a HARQ codebook ID indicating a HARQ-ACK codebook index for a corresponding HARQ-ACK codebook for SPS PDSCH and ACK for SPS PDSCH release; and / or a modulation and coding scheme (MCS) table (e.g., mcs-Table) corresponding to the DL SPS; a number of repetitions for the SPS PDSCH (e.g., pdsch-AggregationFactor)', and / or nrofHARQ-Processes indicating a number of HARQ processes for the DL SPS; and / or HARQ resource for PUCCH (e.g., n1PUCCH-AN}. When the SPS configuration does not comprise / indicate the MCS table, the wireless device may use an MCS table provided / indicate via one or more PDSCH configuration parameters of the one or more configuration parameters (e.g., PDSCH-Config).

[0353] As shown in FIG. 19C, a base station may transmit to the wireless device a DCI #3 (e.g., an activating DCI) with a CS-RNTI (or a G-CS-RNTI) for activating the SPS configuration. The DCI#3 may be a DCI format 1_1 or 1_2 in PDCCH with CRC scrambled by CS-RNTI with NDI=0. The DCI#3 may be / correspond to a most recent (or latest) SPS scheduling assignment PDCCH corresponding to the SPS configuration. The wireless device may receive a PDCCH providing / with the DCI #3. For example, the wireless device may validate the DCI#3 / PDCCH to determine the DCI #3 activating the SPS configuration. An NDI field of the DCI #3 may set to 0. A DFI flag field of the DCI #3 may set to 0. The activating DCI may be the scheduling DCI (e.g., DCI #1 in FIG. 19A and / or FIG. 19B). In other examples, the activating DCI may be different than the scheduling DCI.

[0354] When the one or more SPS configuration parameters configure at least two SPS configurations, a HARQ process number / ID field of the DCI may indicate a SPS configuration index of the SPS configuration of the at least two SPS configurations.

[0355] As shown in FIG. 19C, after / in response to the SPS configuration being activated (based on the DCI #3), the wireless device may receive DL data via / using configured DL assignments configured by the SPS configuration and the DCI #3. The configured DL assignment may further comprise frequency resources (e.g., “Frequency domain resource assignment' field of the DCI #3) and / or VRB-to-PRB mapping and / or rate matching indicator for receiving the SPS PDSCH(s). The DCI #3 may indicate time domain resources (e.g., via a 'Time domain resource assignment' field of the activating DCI #3) as part of theDocket No.: 25-1005PCTconfigured DL assignment. The time domain resources may indicate a row of a time domain resource allocation table (TDRA) configured by the one or more configuration parameters.

[0356] When the SPS configuration is activated, the wireless device may receive a first / initial SPS PDSCH, e.g., a SPS PDSCH#0 in FIG. 19C. The wireless device may receive SPS PDSCHs (e.g., SPS PDSCH#m for m=1, 2,... ) after the first SPS PDSCH. For example, SPS PDSCH#m, for m=1, 2, may comprise PDSCHs scheduled without corresponding PDCCH transmission using the SPS configuration (e.g., SPS-Config) and activated by the activating DCI (e.g., the DCI #3).

[0357] For each SPS PDSCH reception (e.g., first PDSCH and / or SPS PDSCH#m for m=1, 2,...) the wireless device may further transmit corresponding HARQ-ACK information (as also discussed above). The wireless device may, based on the corresponding SPS configuration of the SPS PDSCH, determine corresponding PUCCH resource / time occasion for transmission of the HARQ-ACK information. Similar to embodiment of FIG. 19B, as shown in FIG. 19C, in response to incorrectly receiving the SPS PDSCH#m (comprising a TB#m), the wireless device may, from the base station, receive the scheduling DCI (e.g., the DCI#2) scheduling a retransmission of the TB#m via a dynamical assignment indicated by the scheduling DCI (e.g., the PDSCH#2) In the example of FIG. 19C, the SPS PDSCH#m may comprise an initial transmission of the TB#m and the PDSCH#2 may comprise the retransmission of the TB#m.

[0358] The wireless device may receive SPS PDSCH (comprising the first SPS PDSCH and the SPS PDSCHs after the first SPS PDSCH PDSCH(s), e.g., SPS PDSCH#m for m=1, 2,...) using / via a same symbol allocation across the pdsch-AggregationFactor. The wireless device may use the pdsch-AggregationFactor indicated by the SPS configuration or by pdsch-config of the one or more configuration parameters. The wireless device may expect that a TB is repeated within each symbol allocation among each of the pdsch-AggregationFactor consecutive slots and the PDSCH is limited to a single transmission layer.

[0359] For example, the first set of capabilities may comprise an eighth capability (e.g., downlinkSPS). The eighth capability may indicate whether the wireless device supports PDSCH reception based on SPS. For example, based on the first set of capabilities comprising the eighth capability, the base station may configure the at least one SPS configuration for the wireless device. Based on the first set of capabilities comprising the eighth capability, the base station may not configure the at least one SPS configuration for the wireless device. Based on the first set of capabilities comprising the eighth capability, the base station may not configure more than one SPS configuration for the wireless device.

[0360] The first set of capabilities may comprise a ninth capability (e.g., sps-Multicast-r17) indicating whether the wireless device supports SPS group-common PDSCH for multicast on PCell. The ninth capability may comprise the following functional components: support one SPS group-common PDSCH configuration for multicast; Supports {2, 4, 8} times semi-static slot-level repetition for SPS group-commonDocket No.: 25-1005PCTPDSCH; Supports group-common PDCCH / PDSCH with CRC scrambled by G-CS-RNTI(s) for multicast; Supports DCI format 4_1 with CRC scrambled with G-CS-RNTI for multicast; Supports ACK / NACK-based HARQ-ACK feedback for SPS release associated with G-CS-RNTI.

[0361] When the first set of capabilities comprise the ninth capability, the one or more SPS configuration parameters may configure at least one multicast SPS configuration for receiving SPS group-common PDSCH (e.g., group-common PDCCH configuration for MBS multicast). When the first set of capabilities do not comprise the ninth capability, the one or more SPS configuration parameters may not configure the at least one multicast SPS configuration for receiving SPS group-common PDSCH.

[0362] The first set of capabilities may comprise a tenth capability (e.g., sps-r16) indicating whether the wireless device supports of up to 8 configured SPS configurations in a BWP of a serving cell and up to 32 configured SPS configurations in a cell group. The tenth capability may comprise at least one of the following: maxNumberConfigsPerBWP-r16 indicating a maximum number of active SPS configurations in the BWP of the serving cell; and / or maxNumberConfigsAIICC-r16 indicating a maximum number of active SPS configurations across all serving cells in a MAC entity, and across an MCG and a SCG in case of NR-DC.

[0363] The wireless device may include the tenth capability (or feature) only if the wireless device indicates the support of downlinkSPS (e.g., the eighth capability).

[0364] The one or more configuration parameters may comprise one or more PDSCH configuration parameters (e.g., PDSCH-ConfigCommon and / or PDSCH-Config), e.g., for receiving PDSCH in DL (as discussed above corresponding to FIG. 19A, FIG. 19B, and / or FIG. 19C). The one or more PDSCH configuration parameters may comprise one or more cell-specific PDSCH configuration parameters and / or one or more UE-specific PDSCH configuration parameters. The one or more PDSCH configuration parameters may configure a resource allocation in frequency domain (resourceAllocation and / or resourceAllocationDCI-1-2)

[0365] The one or more PDSCH configuration parameters may indicate / comprise a DL resource allocation scheme (resourceAllocation and / or resourceAllocationDCI-1-2) for receiving (SPS) PDSCHs (e.g., as part of the configured DL assignement). The DL resource allocation (scheme) may be a resource allocation type 0 (e g., resourceAllocationTypeO or a type 0 resource allocation) or a resource allocation type 1 (e.g., resourceAllocationTypel or a type 1 resource allocation). The wireless device may receive, during a symbol / slot of a plurality of symbols / slots, (SPS) PDSCHs based on the configured / indicated resource allocation scheme. For example, a DCI scheduling / activating / triggering the (SPS) PDSCHs may not comprise a 'Frequency domain resource assignment' field (e.g., FDRA field). The wireless device may assume that when the scheduling grant is received with DCI format 1_0, 4_0 or 4_1, the downlink resource allocation type 1 is used for receiving the corresponding PDSCHs. For example, the one or more PDSCHDocket No.: 25-1005PCTconfiguration parameters may indicate / comprise the resource allocation scheme (resourceAllocation and / or resourceAllocationDCI-1 -2) as a dynamic switch (dynamicSwitch).

[0366] In examples of FIG. 19A, FIG. 19B, and / or FIG. 19C, the scheduling DCI or the activating DCI (e.g., scheduling / triggering a (SPS) PDSCH reception) may comprise a ' Frequency domain resource assignment' field (e.g., FDRA field) indicating whether the DL resource allocation is the downlink resource allocation type 0 or type 1. In FIG. 19A, FIG. 19B, and / or FIG. 19C, the wireless device may, in response to the scheduling DCI or the activating DCI indicating the downlink resource allocation type 0, receive the (SPS) PDSCH based on the downlink resource allocation type 0. In FIG. 19A, FIG. 19B, and / or FIG. 19C, the wireless device may, in response to the scheduling DCI or the activating DCI indicating the downlink resource allocation type 1, receive the PDSCH based on the downlink resource allocation type 1.

[0367] In / for the downlink resource allocation of type 0 (e.g., the type 0 resource allocation), the one or more configuration parameters may indicate / configure a first resource block assignment information. The first resource block assignment information may comprise a bitmap indicating a set of Resource Block Groups (RBGs). An RBG of the set of RBGs may comprise a set of consecutive virtual resource blocks (e.g, rbg-Size configured by PDSCH-Config or rbg-SizeDCI-1-3 configured by PDSCH-ConfigDCI-1 -3 for DCI format 1_3) and a size of the active DL BWP.

[0368] In / for the downlink resource allocation of type 1 (e.g., the type 1 resource allocation), the one or more configuration parameters may indicate / configure a second resource block assignment information. The second resource block assignment information may indicate / configure a set of contiguously allocated non-interleaved or interleaved virtual resource blocks within the active bandwidth part of size N PRBs. For the case when DCI format 1_0 is decoded in a common search space, N is the size of CORESET 0.

[0369] For a PDSCH reception (e.g., see FIG. 19A, FIG. 19B, and / or FIG. 19C), the wireless device may determine a transport block size (or the provided TB by the PDSCH). The TB may comprise a MAC PDU. The TB may comprise one or more packets. The TB may comprise data of the wireless device. The wireless device may (for receiving the TB) determine a corresponding TB size (TBS) of the TB based on a first TBS procedure. A PDSCH reception procedure (for receiving the PDSCH) may comprise performing the first TBS procedure.

[0370] For example, for the TB / PDSCH reception, the wireless device may (corresponding to the TB) determine at least one of the following: a modulation order (Qm), a target code rate (R), a redundancy version (RV), the TBS (based on the first TBS procedure). A modulation and coding scheme (MCS) field of the scheduling / activating DCI (e.g., the DCI#1 or the DCI#2 or the DCI#3 in FIG. 19A, FIG. 19B, and / or FIG. 19C) may indicate the modulation order and / or the target code rate (e.g., MCS index, IMCS). An RV field of the scheduling / activating DCI may indicate the RV used for receiving the TB / PDSCH. The wireless device may, for the indicated MCS index (e.g., MCS index, IMCS), determine the TBS.Docket No.: 25-1005PCT

[0371] The one or more PDSCH configuration parameters (e.g., PDSCH-ConfigCommon and / or PDSCH-Config and / or the SPS-Config corresponding to the PDSCH) may comprise at least one MCS table, e.g., mcs-Table and / or mcs-TableDCI-1-2. For example, the wireless device may determine the modulation order (Qm) and the target code rate (R) based on the MCS index IMCS indicated by the scheduling / activating DCI (e.g., the DCI#1 / DCI#2 or the DCI#3) and / or the at least one MCS table.

[0372] The first TBS procedure may comprise determining a total number of allocated PRBs nPRBfor receiving the PDSCH. Based on the scheduling / activating DCI (e.g., FDRA field of the scheduling / activating DCI) and / or the resource allocation scheme, the wireless device may determine allocated PRBs (e.g., the total number of allocated PRBs), e.g., nPRB. The allocated PRBs are within the active DL BWP. The wireless device may receive the PDSCH using / based on the allocated PRBs. The allocated PRBs may comprise a plurality of PRBs, e.g., for receiving the PDSCH. The allocated PRBs may be scheduled bandwidth for receiving the PDSCH. nPRBmay be a size of (e.g., a number of PRBs in) the plurality of PRBs allocated for the PDSCH.

[0373] The first TBS procedure may comprise determining a number of REs within the slot (e.g., for receiving PDSCH) NRE. NRE may be a total number of REs allocated for the PDSCH. The wireless device may determine the TBS based on NRE. The wireless device may further determine the total number of REs allocated for the PDSCH as NRE= min(156, MRE) ■ nPRB. MREmay be a total number of REs allocated for the PDSCH within a PRB of the plurality of PRBs. The wireless device may determine the MREas MRE= NscRB· Nsymbsh− NDMRSPRB− NohPRB. NRBmay be a number of subcarriers in a physical resource block, e.g., NscRB= 12. Nsymbshmay be a number of symbols of the PDSCH allocation within the slot. NDMRSPRBmay be a number of REs for DM-RS per PRB in a scheduled duration of the PDSCH. NDMRSPRBmay comprise an overhead of the DM-RS CDM groups without data. NRRBmay be an overhead indicated by xOverhead in the one or more PDSCH configuration parameters (e.g., PDSCH-ServingCellConfig and / or pdsch-ConfigMulticast). In some examples, the wireless device may set NRRBto 0, e.g., if the xOverhead in PDSCH-ServingCellConfig is not configured (a value from 6, 12, or 18), the NRRBmay be 0. If the DCI scheduling the PDSCH (e.g., the DCI #1 or the DCI #2) is with a CRC scrambled by SI-RNTI, RA-RNTI, MSGB-RNTI or P-RNTI.

[0374] The wireless device may determine unquantized intermediate variable Ninfobased on at least the NRE, the target code rate (R), the modulation order (Qm), an / or a number of layers (v), e.g., Ninfo= NRE■ R ■ Qm■ v. If Ninfo< 3824, the wireless device may determine the TBS based on Minfo= Fi(Ninfo)- info isaquantized intermediate number of information bits. For example, F1Ninfo) — max (24, 2n■ °]) where n = max(3, [log2(Ninfo) J—6). The wireless device may use a pre-defined / pre-configured TBS table (e.g., Table 5.1.32-1 of 3GPP TS 38.214) for determining the TBS. In anDocket No.: 25-1005PCTexample, the TBS is a closest TBS in the pre-defined / pre-configured TBS table that is not less than (or is larger than or equal to) Minfo. Ninf0> 3824, the wireless device may determine the TBS based onMinfo = and / or whether (the target code rate) R<1 / 4 and / or whether Ninf0> 8424. Minfois the quantized intermediate number of information bits. For example, F2(Ninf0) = max I 3840, 2nx round (Nmf°n24H where n = [log2(Ninfo— 24)] — 5. For example, if R^1 / 4, TBS = 8' C- ^in / o + 24 Ninfo+ 24 8 C — 24, where C = 3816 If R>1 / 4 and Ninfo> 8424, TBS = 8' C' 8 C - 24,^inf o+24 where C — If R>1 / 4 and Ninfo< 8424, TBS = 8- - 24.8424 8

[0375] Based on determining the TB size (using the first TBS procedure), the wireless device may determine a HARQ information corresponding to the TB / PDSCH and indicate the HARQ information to higher layers (e.g., MAC layer) of the wireless device. The HARQ information may comprise the TBS size of the TB, corresponding HARQ process ID, and NDI (whether it is an initial transmission or retransmission).

[0376] For example, the wireless device may use the first TBS procedure for determining the TBS of a retransmission of the TB (e.g., provided by the PDSCH #2 in FIG. 19B and / or FIG. 19C). For example, when an MCS index (indicated by the DCI #2) is smaller than or equal to a first threshold, the wireless device may use the first TBS procedure for determining the TB size of the retransmission of the TB.

[0377] When / based on the MCS index (indicated by the DCI #2) is smaller than or equal to the first threshold, the wireless device may determine a first MCS condition not being satisfied.

[0378] When / based on the MCS index (indicated by the DCI #2) is larger than the threshold, the wireless device may determine the first MCS condition being satisfied. The wireless device may determine the first MCS condition not being satisfied based on at least one of the following being fulfilled / met: 0 ≤ IMCS≤ 27 and when a first MCS table (e.g., 3GPP TS 38.214 Table 5.1.3.1-2, e.g., MCS table 2 for PDSCH) of the at least one MCS table is used for the PDSCH#2; and / or 0 < IMCS< 26 and a second MCS table (e.g, 3GPP TS 38.214 Table 5.1.3.1-4, e.g., MCS index table 4 for PDSCH) of the at least one MCS table is used for the PDSCH#2; and / or 0 < IMCS< 28 and a third MCS table of the at least one MCS table is used for the PDSCH#2. The third MCS table is different than the first MCS table and the second MCS table. Based on the first MCS condition not being satisfied, the wireless device may determine the TBS of the retransmission of the TB (received via the PDSCH#2) using the first TBS procedure (e.g., indicated MCS by the DCI #1).

[0379] For example, the wireless device may determine the first MCS condition being satisfied based on an MCS index corresponding to the PDSCH#2 with the (retransmission of) TB satisfying b0≤ IMCS≤ b1The wireless device may determine the first MCS condition being satisfied based on at least one of theDocket No.: 25-1005PCTfollowing being fulfilled / met: (Case 1) b0= 28, b = 31 and when a first MCS table (e.g, 3GPP TS 38.214 Table 5.1.3.1-2, e.g., MCS table 2 for PDSCH) of the at least one MCS table is used for the PDSCH#2; or (Case 2) b0= 27, b = 31 and a second MCS table (e.g., 3GPP TS 38.214 Table 5.1.3.1-4, e.g., MCS index table 4 for PDSCH) of the at least one MCS table is used for the PDSCH#2.

[0380] The wireless device may determine the first MCS condition being satisfied based on none of the following being fulfilled / met: the first MCS table is used for the PDSCH#2 and b0= 0, b1= 27; and the second MCS table is used for the PDSCH#2 and b0= 0, b1= 26; and (Case 3) a third MCS table (a table other than 3GPP TS 38.214 Table 5.1.3.1-2 and 3GPP TS 38.214 Table 5.1.3.1-4) of the at least one MCS table is used for the PDSCH#2 and b0= 0, b1= 28

[0381] In an example, the wireless device may, corresponding to the PDSCH#2, determine the first MCS condition being satisfied, based on the first MCS condition being satisfied, the wireless device for determining the TBS of the retransmission of the TB (provided by the PDSCH#2) uses / considers the DCI #3 or the DCI #1 for the initial transmission of the TB using 0 ≤ IMCS≤ b2. Based on the first MCS condition being satisfied, the wireless device for determining the TBS of the (retransmission of the) TB (provided by the PDSCH#2) uses the first TBS procedure and the DCI #1 / DCI#3 (using 0 ≤ IMCS≤ b2). For Case 1, b2= 27. For Case 2, b2= 26. For Case 3, b2= 28. Other values may be possible.

[0382] When the indicated / scheduled / configured MCS index (e.g., by the scheduling / activating DCI) is larger than the threshold, the indicated / scheduled / configured MCS index may be a reserved value in the at least one MCS table.

[0383] FIG. 20A, FIG. 20B, and FIG. 20C show examples of PUSCH transmissions per aspects some embodiments of the present disclosure. The wireless device may transmit the PUSCH transmissions in an active UL BWP (corresponding to the active DL BWP), e.g., in / during a slot (UL / F slot). For example, a PUSCH transmission may comprise / carry a TB (or a second MAC PDU), e.g., the PUSCH transmission may be with the TB. As shown in FIG. 20A and FIG. 20B, the wireless device may transmit, e.g., via a serving cell (e.g., cell 1 or CC1) and to the base station, the PUSCH (carrying / comprising a transport block TB). In the example of FIG. 20A, the scheduling DCI (e.g., DCI #4) may indicate / schedule the PUSCH transmission (e.g., an initial transmission of the TB). In the example of FIG. 20B, the scheduling DCI (e.g., DCI #5) may indicate / schedule a retransmission of the TB via a PUSCH #2.

[0384] The TB may comprise a second MAC PDU. The TB may comprise one or more packets. The TB may comprise data of the wireless device.

[0385] In the present disclosure, for eight antenna ports PUSCH transmission, when the number of PUSCH transmission layers is greater than 4, two codewords (transport blocks) are transmitted by the PUSCH transmission. If the higher layer parameter maxRank or maxMlMO-Layers in PUSCH-config is greater than 4, the wireless device may determine one of the two codewords / TBs is disabled based on theDocket No.: 25-1005PCTindicated MCS index (by the scheduling DCI) IMCS= 26 and the indicated redundancy revision (by the scheduling DCI) rvid = 1 for the corresponding transport block. If both transport blocks are enabled by the scheduling DCI, transport block 1 and 2 are mapped to codeword 0 and 1 respectively. If only one transport block is enabled, then the enabled transport block is always mapped to the first codeword

[0386] The one or more configuration parameters may comprise one or more PUSCH configuration parameters (e.g., PUSCH-Config and / or PUSCH-ServingCellConfig'). The wireless device may transmit PUSCHs (e.g., PUSCH transmission power or spatial filter) in FIG. 20A, FIG. 20B, and FIG. 20C using / based on the one or more PUSCH configuration parameters. The PUSCH transmission (e.g., of a MsgA PUSCH and / or msg3 PUSCH of a random access procedure discussed in FIG. 13A, FIG. 13B, and FIG 13C) may be based on one or more RACH configuration parameters (e.g., RACH-ConfigCommon and / or RACH-ConfigDedicated and / or RACH-ConfigGeneric), e.g., msgA-PUSCH-Config. The one or more PUSCH configuration parameters (e.g., PUSCH-Config and / or PUSCH-ServingCellConfig) may further configure a number of slots for TB processing (e.g., numberOfSIotsTBoMS). The number of slots for TB processing may correspond to a PUSCH transmission (e.g., in in FIG. 20A, FIG. 20B, and FIG. 20C) over the one or more UL slots. For example, the wireless device may determine the number of slots for TB processing is 1 (when the numberOfSIotsTBoMS is not configured / indicated or is absent from the one or more PUSCH configuration parameters).

[0387] As also shown in FIG. 20C, the one or more configuration parameters may comprise one or more CG configuration parameters. The one or more CG configuration parameters may configure / indicate at least one CG configuration (e.g., configuredGrantConfig'). For example, the CG configuration may comprise a Type 1 CG configuration (rrc-ConfiguredUplinkGranf). Some PUSCH transmissions shown in FIG. 20C may be based on the one or more CG configuration parameters (e.g., a CG configuration of the at least one CG configuration).

[0388] In the example of FIG. 20A and / or FIG. 20B and / or FIG. 20C, a PUSCH transmission (e.g., the PUSCH or a PUSCH #2) may be scheduled / triggered / indicated by a first DL command / message. The first DL command (or message or signal) may be DCI #4 scheduling / indicating an initial PUSCH transmission of the TB (e.g., the PUSCH transmission). In FIG. 20A and / or FIG. 20B, the first DL command (or message or signal) may be a DCI #4 scheduling / indicating an initial PUSCH transmission for the TB (e.g., the PUSCH transmission). In FIG. 20B and / or FIG. 20C, the first DL command (or message or signal) may be a DCI #5 scheduling / indicating a retransmission of the PUSCH transmission for the TB (e.g., the PUSCH#2). In FIG.20C, the first DL command (or message or signal) may be a DCI #6 triggering / activating Type 2 CG PUSCH transmissions of a CG configuration of the at least one CG configuration.

[0389] The DCI#6 may be a DCI with CRC scrambled by a CS-RNTI with NDI=0 (e.g., the configured uplink grant may be addressed to the CS-RNTI with NDI=0). The DCI#4 and / or the DCI#5 may be a DCIDocket No.: 25-1005PCTwith CRC scrambled by a CS-RNTI with NDI=1 (e.g., the dynamic uplink grant may be addressed to the CS-RNTI with NDI=1).

[0390] In some examples, the first DL command may be / comprise a RAR message or a fallback RAR message (scheduling / indicating a Msg3 PUSCH transmission, e.g., the PUSCH is the Msg3 PUSCH). In yet another example, the PUSCH may be a MsgA PUSCH. For example, the wireless device may transmit the PUSCH based on the one or more PRACH configuration parameters (e.g., msgA-PUSCH-Config and / or msgA-MCS).

[0391] The wireless device may receive the first DL command comprising a scheduling grant (an UL grant) for transmitting the PUSCH. The UL grant may be dynamically indicated by the first DL command.

[0392] In the example of FIG. 20C, the UL grant may be a configured UL grant (e.g., CG grant Type 2) when the PUSCH is a CG PUSCH (e.g., a CG Type 2 PUSCH). For example, the DCI#6 may activate the CG Type 2 PUSCH transmission (e.g., activates the CG configuration), e.g., the CG configuration may be a Type 2 CG configuration (e.g., when configuredGrantConfig does not include the rrc-ConfiguredUplinkGrant). Type 2 CG configuration may also be referred to by a CG Type 2 configuration.

[0393] Alternatively, in the example of FIG. 20C, the CG PUSCH may be based on a CG Type 1 PUSCH, e.g., the CG configuration may be a Type 1 CG configuration (e.g., when configuredGrantConfig includes rrc-ConfiguredUplinkGranf). Type 1 CG configuration may also be referred to by a CG Type 1 configuration.

[0394] As shown in FIG. 20C, the wireless device may receive (prior to receiving the DCI#5 and / or the transmission of the CG PUSCH#m) the DCI #6 activating the CG Type 2 configuration. After the CG Type 2 configuration being activated (based on the DCI# 6), the wireless device may transmit UL data via / using configured UL grant configured by the CG Type 2 configuration and the DCI #6. The DCI #6 may indicate frequency resources (e.g., “Frequency domain resource assignment' field of the DCI #6) and / or VRB-to-PRB mapping or transmitting the CG PUSCH(s) (e.g., CG PUSDH #0,.... CG PUSCH#m, m=1, 2,...). The DCI #6 may indicate time domain resources (e g., via a 'Time domain resource assignment field of the activating DCI #6). The DCI #6 may be CRC scrambled by a CS-RNTI. The DCI #6 may comprise an NDI field with NDI=0.

[0395] The wireless device may receive the DCI #6 in a most recent PDCCH scheduling / activating / triggering the CG Type 2 configuration. When the CG Type 2 configuration is activated (by the DCI #6), the wireless device may transmit a first / starting / earliest / initial CG PUSCH (the CG PUSCH#0). The wireless device may transmit CG PUSCHs (e.g., the CG PUSCH#m) after the first CG PUSCH. The wireless device may transmit CG PUSCHs without corresponding PDCCH transmission and using the CG Type 2 configuration.

[0396] In some embodiments, at least one PUSCH transmission shown in FIG. 20A and / or FIG. 20B and / or FIG. 20C may be without repetitions.Docket No.: 25-1005PCT

[0397] Alternatively, in some other embodiments, at least one PUSCH transmission shown in FIG. 20A and / or FIG. 20B and / or FIG. 20C may be with PUSCH repetitions. For example, transmitting the TB may be based on PUSCH repetition Type B or PUSCH repetition Type A.

[0398] In the present disclosure, for a PUSCH transmission (e.g., shown in the example of FIG. 20A and / or FIG. 20B and / or FIG. 20C, e.g., the PUSCH or a PUSCH #2 or CG PUSCH#0 CG PUSCH#m) the wireless device may determine whether a transform precoding is enabled or disabled. The PUSCH transmission may be the PUSCH retransmission scheduled by the DCI#6. When the transform precoding is enabled for the PUSCH transmission, the PUSCH transmission is a DFT-s-OFDM based PUSCH transmission. When the transform precoding is disabled for the PUSCH transmission, the PUSCH transmission is a OFDM based PUSCH transmission. The wireless device may determine whether the transform precoding is enabled or disabled for the PUSCH transmission based on whether at least one transform precoding condition being fulfilled / satisfied or not. Based on / when the at least one transform precoding condition not being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission), the wireless device may determine the transform precoding being disabled for the PUSCH transmission / retransmission. Based on / when the at least one transform precoding condition being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission), the wireless device may determine the transform precoding being enabled for the PUSCH transmission / retransmission.

[0399] When the PUSCH transmission / retransmission is a Msg3 PUSCH transmission / retransmission of a random access procedure (e.g., when the first DL command is a fallbackRAR message or a DCI format 0_0 with CRC scrambled by TC-RNTI), the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied based on the one or more configuration parameters (e.g., the one or more RACH configuration parameters) indicating / comprising / enabling a msg3-transformPrecoder.

[0400] When the PUSCH transmission / retransmission is the Msg3 PUSCH transmission / retransmission of the RA procedure, the wireless device may determine the at least one transform precoding condition not being fulfilled / satisfied based on the one or more configuration parameters (e.g., the one or more RACH configuration parameters) not indicating / comprising / enabling the msg3-transformPrecoder, e.g., the msg3-transformPrecoderis absent from the one or more configuration parameters or being disabled.

[0401] When the PUSCH transmission is a MsgA PUSCH transmission / retransmission of a two-step random access procedure, the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied based on the one or more configuration parameters (e.g., the one or more RACH configuration parameters) indicating / comprising / enabling at least one of a msgA-TransformPrecoder and / or the msg3-transformPrecoder. Based on the one or more configuration parameters indicating / comprising / enabling the msgA-TransformPrecoder, the wireless device may the at least one transform precoding condition being fulfilled / satisfied. Based on the one or more configuration parametersDocket No.: 25-1005PCTnot indicating / comprising / enabling the msgA-TransformPrecoder (e.g., the msgA-TransformPrecoder is absent from the one or more configuration parameters or being disabled) and the one or more configuration parameters indicating / comprising / enabling the msg3-transformPrecoder, the wireless device may the at least one transform precoding condition being fulfilled / satisfied. Based on the one or more configuration parameters not indicating / comprising / enabling the msgA-TransformPrecoder (e.g., the msgA-TransformPrecoder is absent from the one or more configuration parameters or being disabled) and the one or more configuration parameters not indicating / comprising / enabling the msg3-transformPrecoder (e.g., the msg3-transformPrecoder'\s absent from the one or more configuration parameters or being disabled), the wireless device may the at least one transform precoding condition not being fulfilled / satisfied.

[0402] When the PUSCH transmission is a CG PUSCH transmission (e.g., the CG PUSCH#0,...,the CG PUSCH#m in FIG. 20C), the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied based on the one or more configuration parameters indicating / comprising / enabling at least one of a transformPrecoder (e.g., via the one or more CG configuration parameters, e.g., the configuredGrantConfig corresponding to the CG PUSCH transmission) and / or the msg3-transformPrecoder. Based on the one or more configuration parameters indicating / comprising / enabling the transformPrecoder, the wireless device may the at least one transform precoding condition being fulfilled / satisfied. Based on the one or more configuration parameters not indicating / comprising / enabling the transformPrecoder, (e.g., the transformPrecoder is absent from the configuredGrantConfig corresponding to the CG PUSCH transmission or being disabled) and the one or more configuration parameters indicating / comprising / enabling the msg3-transformPrecoder, the wireless device may the at least one transform precoding condition being fulfilled / satisfied. Based on the one or more configuration parameters not indicating / comprising / enabling the transformPrecoder, (e.g., the transformPrecoder is absent from the configuredGrantConfig corresponding to the CG PUSCH transmission or being disabled) and the one or more configuration parameters not indicating / comprising / enabling the msg3-transformPrecoder (e.g., the msg3-transformPrecoder\s absent from the one or more configuration parameters or being disabled), the wireless device may the at least one transform precoding condition not being fulfilled / satisfied.

[0403] When the PUSCH transmission / retransmission is scheduled by a DCI format 0_0 (e.g, when the DCI#4 or the DCI#5 are the DCI format 0_0), the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied based on the one or more configuration parameters (e.g., the rach-ConfigCommon included directly within BWP configuration) indicating / comprising / enabling a msg3-transformPrecoder. Alternatively, the wireless device may determine the at least one transform precoding condition not being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission) based on the one or more configuration parameters (e.g., the rach-ConfigCommon included directly within BWP configuration)Docket No.: 25-1005PCTnot indicating / comprising / enabling the msg3-transform Precoder, e.g., the msg3-transformPrecoder'\s absent from the rach-ConfigCommon included directly within BWP configuration or being disabled.

[0404] When the PUSCH transmission / retransmission is scheduled by a DCI format 0_x (e.g., when the DCI#4 or the DCI#5 are the DCI format 0_x and x is not 0 or x>0), the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission) based on at least one of the following: the one or more configuration parameters (e.g., the pusch-Config) indicating / comprising / enabling a dynamicTransformPrecoderFieldPresenceDCI-0-1 / dynamicTransformPrecoderFieldPresenceDCI-0-2 and / or the scheduling DCI indicating / enabling (e.g., via a Transform indicator field of the DCI, e.g., the DCI#4 / DCI#6) the transform precoding for the PUSCH transmission / retransmission Additionally, based on the Transform indicator field of the scheduling DCI indicating the transform precoding for the PUSCH transmission / retransmission being enabled, the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied (for the PUSCH transmission). The scheduling DCI indicates the transform precoding for the PUSCH transmission / retransmission is enabled when the Transform indicator field of the DCI) (scheduling the PUSCH transmission / retransmission) is set with a value of 0.

[0405] When the PUSCH transmission / retransmission is scheduled by a DCI format 0_x (e.g., when the DCI#4 or the DCI#5 are the DCI format 0_x and x is not 0 or x>0), the wireless device may determine the at least one transform precoding condition not being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission) based on at least one of the following: the one or more configuration parameters (e.g., the pusch-Config') indicating / comprising / enabling the dynamicTransformPrecoderFieldPresenceDCI-0-1 / dynamicTransformPrecoderFieldPresenceDCI-0-2 and / or the scheduling DCI not indicating / enabling or disabling (e.g., via the Transform indicator field of the DCI) the transform precoding for the PUSCH transmission / retransmission. Additionally, based on the T ransform indicator field of the scheduling DCI indicating the transform precoding for the PUSCH transmission being disabled (or not being enabled), the wireless device may determine the at least one transform precoding condition not being fulfilled / satisfied (for the PUSCH transmission / retransmission). The scheduling DCI indicates the transform precoding for the PUSCH transmission / retransmission is disabled when the Transform indicator field of the DCI) (scheduling the PUSCH transmission / retransmission) is set with a value of 1.

[0406] When the PUSCH transmission / retransmission is scheduled by a DCI format 0_x (e.g., when the DCI#4 or the DCI#5 are the DCI format 0_x and x is not 0 or x>0), the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied based on at least one of the following: the one or more configuration parameters (e.g, the pusch-Config) not indicating / comprising / enabling the dynamicTransformPrecoderFieldPresenceDCI-0-1 / dynamicTransformPrecoderFieldPresenceDCI-0-2Docket No.: 25-1005PCT(e.g., dynamicTransformPrecoderFieldPresenceDCI-0-1 / dynamicTransformPrecoderFieldPresenceDCI-0-2 is absent from the pusch-Config) and / or the one or more configuration parameters indicating / comprising / enabling the msg3-transformPrecoder.

[0407] When the PUSCH transmission / retransmission is scheduled by a DCI format 0_x (e.g., when the DCI#4 or the DCI#5 are the DCI format 0_x and x is not 0 or x>0), the wireless device may determine the at least one transform precoding condition not being fulfilled / satisfied based on at least one of the following: the one or more configuration parameters (e.g., the pusch-Config) not indicating / comprising / enabling the dynamicTransformPrecoderFieldPresenceDCI-0-1 / dynamicTransformPrecoderFieldPresenceDCI-0-2 (e.g., dynamicTransformPrecoderFieldPresenceDCI-0-1 / dynamicTransformPrecoderFieldPresenceDCI-0-2 is absent from the pusch-Config) and / or the one or more configuration parameters not indicating / comprising / enabling the msg3-transformPrecoder (, e.g., the msg3-transformPrecoder'\s absent from the one or more configuration parameters or being disabled).

[0408] For example, if a resourceAllocation / resourceAllocationDCI-0-2 in the one or more PUSCH configuration parameters (e.g., pusch-Config) for the scheduling DCI (e.g., a DCI format 0_1 or a DCI format 0_2) is set to a resourceAllocationTypeO, the wireless device may not expect (or consider it as error) that the Transform precoder indicator field in the DCI with the scheduling grant indicates that transform precoding is enabled. Alternatively, if the resourceAllocation / resourceAllocationDCI-0-2 in the one or more PUSCH configuration parameters (e.g., pusch-Config) for the scheduling DCI (e.g., a DCI format 0_1 or a DCI format 0_2) is set to the resourceAllocationTypeO and the Transform precoder indicator field in the DCI with the scheduling grant indicating that transform precoding is enabled, the wireless device may determine the at least one transform precoding condition not being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission).

[0409] For example, if the resourceAllocation / resourceAllocationDCI-0-2 in the one or more PUSCH configuration parameters (e.g, pusch-Config) for the scheduling DCI (e.g., a DCI format 0_1 or a DCI format 0_2) is not set to the resourceAllocationTypeO (e.g., set to the resource AllocationTypel or dynamicSwitch) and the Transform precoder indicator field in the DCI with the scheduling grant indicating that transform precoding is enabled, the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission).

[0410] For example, if a resource allocation indicated by the scheduling DCI (e.g., via a Frequency domain resource assignment field of the scheduling DCI) is set to a resource allocation type 0, the wireless device may not expect (or consider it as error) that the Transform precoder indicator field in the DCI with the scheduling grant indicates that transform precoding is enabled. Alternatively, if the resource allocation indicated by the scheduling DCI (e.g., via the Frequency domain resource assignment field of the scheduling DCI) is set to the resource allocation type 0 and the Transform precoder indicator field in theDocket No.: 25-1005PCTDCI with the scheduling grant indicating that transform precoding is enabled, the wireless device may determine the at least one transform precoding condition not being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission).

[0411] If the resource allocation indicated by the scheduling DCI (e.g., via the Frequency domain resource assignment field of the scheduling DCI) is set to the resource allocation type 1 (or a dynamic switch) and the Transform precoder indicator field in the DCI with the scheduling grant indicating that transform precoding is enabled, the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission).

[0412] For example, if a dmrs-Type in DMRS-UplinkConfig is set to 'type 2’ for the PUSCH transmission scheduling by the DCI (e.g., the scheduling DCI), the wireless device may not expect (or consider it as error) that the Transform precoder indicator field in the DCI with the scheduling grant indicates that transform precoding is enabled. Alternatively, if the dmrs-Type in DMRS-UplinkConfig is set to ‘type 2' for the PUSCH transmission scheduling by the DCI (e.g., the scheduling DCI) and the Transform precoder indicator field in the DCI with the scheduling grant indicating that transform precoding is enabled, the wireless device may determine the at least one transform precoding condition not being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission).

[0413] If the dmrs-Type in DMRS-UplinkConfig is set to ‘type T for the PUSCH transmission scheduling by the DCI (e.g., the scheduling DCI) and the Transform precoder indicator field in the DCI with the scheduling grant indicating that transform precoding is enabled, the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission).

[0414] If the dmrs-Type in DMRS-UplinkConfig is absent (or is not configured) for the PUSCH transmission scheduling by the DCI (e.g., the scheduling DCI) and the Transform precoder indicator field in the DCI with the scheduling grant indicating that transform precoding is enabled, the wireless device may determine the at least one transform precoding condition being fulfilled / satisfied (e.g., for the PUSCH transmission / retransmission).

[0415] Corresponding to each PUSCH transmission in FIG. 20A and / or FIG. 20B and / or FIG. 20C, the wireless device may determine a corresponding TB size (TBS) based on the procedure (e.g, a second TBS procedure). A PUSCH transmission procedure (for transmitting a PUSCH) may comprise performing the second TBS procedure. For example, for transmitting the TB (via a PUSCH transmission in in FIG. 20A and / or FIG. 20B and / or FIG. 20C), the wireless device may determine at least one of the following: a modulation order (Qm), a target code rate (R), a redundancy version (RV), the TBS (based on the second TBS procedure). A modulation and coding scheme (MCS) field of the first DL command (e.g., the DCI #4 and / or the DCI #5 and / or the DCI #6) may indicate the modulation order and / or the target code rate. ForDocket No.: 25-1005PCTexample, the MCS field of the first DCI may indicate an MCS index IMCS. An RV field of the first DL command may indicate the RV used for transmitting the PUSCH. The wireless device may, for the indicated MCS index, determine the TBS of the second TB.

[0416] For example, for CG Type 2 PUSCH transmissions (activated by the DCI#6) and dynamically schedule PUSCH transmissions (e.g., scheduled by the first DL command and / or the DCI#5), the wireless device may determine the modulation order (Qm) and the target code rate (R) based on the MCS index IMCS indicated by the first DL command (and / or the DC l#5) and / or the at least one MCS table.

[0417] In some cases (e.g., for the CG Type 1 PUSCH transmission), the wireless device may determine the modulation order (Qm), the target code rate (R), the redundancy version (RV), the TBS using the one or more CG configuration parameters (e.g., CG Type 1 configuration). For example, mcsAndTBS in the rrc-ConfiguredUplinkGrant provided / indicated by the configuredGrantConfig may indicate / configure the MCS index / value IMCS for transmission of the CG type 1 PUSCH transmissions. For example, for CG type 1 PUSCH transmissions, the wireless device may determine the modulation order (Qm) and the target code rate (R) based on the MCS index IMCS indicated by mcsAndTBS in configuredGrantConfig and / or the at least one MCS table.

[0418] The one or more configuration parameters (e.g., configuredGrantConfig and / or PUSCH-Config) may comprise at least one MCS table, e.g., mcs-Table in the one or more CG configuration parameters {configuredGrantConfig) and / or mcs-Table in the PUSCH-config and / or msgA-MCS in the one or more RACH configuration parameters. For example, the wireless device may determine the modulation order (Qm) and the target code rate (R) based on the MCS index IMCS(indicated by the first DL command and / or the one or more CG configuration parameters) and / or the at least one MCS table. The at least one MCS table may further comprise at least one of (e.g., when mcs-TableTransformPrecoder in pusch-Config is set to 'qam256') 3GPP TS 38.214 Table 6.1.4.1-1, e.g., MCS table 1 for PUSCH and / or (e.g., when mcs-TableTransformPrecoderm configuredGrantConfig is configured) 3GPP TS 38.214 Table 6.1.4.1-2, e.g., MCS table 2 for PUSCH.

[0419] The wireless device may determine allocated frequency resources (a second allocated PRBs in the active UL BWP) for the transmission of each PUSCH transmission in FIG. 20A and / or FIG. 20B and / or FIG.20C PUSCH based on a frequency domain allocation filed (e.g., frequencyDomainAllocation) in the CG configuration (e.g., the CG Type 1 configuration) and / or a FDRA value indicated by the first DL command (e.g., the DCI #4 and / or the DCI #5 and / or the DCI #6, or the RAR message, or the fallback RAR message). The allocated frequency resources may comprise resource block assignment in frequency domain. Three uplink resource allocation schemes type 0, type 1 and type 2 may be supported for the PUSCH transmission.Docket No.: 25-1005PCT

[0420] The second TBS procedure may comprise determining a second total number of allocated PRBs nPRBfor transmitting each PUSCH in FIG. 20A and / or FIG. 20B and / or FIG. 20C. Based on the first DL command (e.g., the FDRA field of the first DL command) and / or the FDRA filed of the CG configuration and / or the one or more PRACH configuration parameters (e.g., msgA-PUSCH-Config), the wireless device may determine second allocated PRBs (e.g., the second total number of allocated PRBs), e.g., nPRB. The second allocated PRBs are within the active UL BWP. The wireless device may transmit the PUSCH using / based on the second allocated PRBs. The second allocated PRBs may comprise a second plurality of PRBs, e.g., for transmitting the PUSCH. The second allocated PRBs may be a second scheduled bandwidth for transmitting the PUSCH. nPRBmay be a size of (e.g., a number of PRBS in) the second plurality of PRBs allocated for the PUSCH.

[0421] The second TBS procedure may comprise determining a number of REs within the slot (e.g., for transmitting PUSCH) NRE. NRE may be a second total number of REs allocated for each PUSCH in FIG. 20A and / or FIG. 20B and / or FIG. 20C. The wireless device may determine the TBS based on RE. The wireless device may determine the second total number of REs allocated for the PUSCH as NRE= N * min(156, MRE) · nPRB. MREmay be a total number of REs allocated for the PDSCH within a PRB of the plurality of PRBs. The wireless device may determine the MREas MRE= NscRB· Nsymbsh− NDMRSPRB− NohPRB. NSRBmay be a number of subcarriers in a physical resource block, e.g., NNscRB= 12. Nsymbshmay be a number of symbols of the PUSCH allocation within the slot. NDMRSPRBmay be a number of REs for DM-RS per PRB in a scheduled duration of the PUSCH. NDMRSPRBmay comprise an overhead of the DM-RS CDM groups without data. NohPRBmay be an overhead indicated by xOverhead in the one or more PUSCH configuration parameters (e.g., PUSCH-ServingCellConfig'). In some examples, the wireless device may set NBBBto 0, e.g., if the xOverhead in PUSCH-ServingCellconfig is not configured (a value from 6, 12, or 18), and / or for Msg3 PUSCH transmission and / or for MsgA PUSCH transmission. In case of PUSCH repetition Type B, NDMRSPRBmay be based on a nominal repetition with the duration of L2 symbols without segmentation. N≥1 may be the number of slots for the TB processing.

[0422] Based on determining the TB size (using the second TBS procedure), the wireless device may determine a second HARQ information corresponding to the TB (of a PUSCH transmission in in FIG. 20A and / or FIG. 20B and / or FIG. 20C) and indicate the HARQ information to higher layers (e.g., MAC layer) of the wireless device. The HARQ information may comprise the TBS size of the TB, corresponding HARQ process ID, and NDI (whether it is an initial transmission or retransmission). The higher layers of the wireless device may transmit the TB via the PUSCH transmission.

[0423] For example, when / based on the MCS index indicated by the first DL command is smaller than or equal to a second threshold, the wireless device may determine a second MCS condition not beingDocket No.: 25-1005PCTsatisfied. When the MCS index indicated by the first DL command is larger than the second threshold, the wireless device may determine the second MCS condition being satisfied.

[0424] The wireless device may determine the second MCS condition not being satisfied based on the MCS index indicated by the first DCI command (e.g., corresponding to the PUSCH#2 with the retransmission of TB) satisfying 0 ≤ IMCS≤ c2where the second threshold is C2. The wireless device may determine the second MCS condition not being satisfied based on 0 ≤ IMCS≤ 27 (e.g., the second threshold is 28) and transform precoding being disabled for the PUSCH#2 and the first MCS table being used for the PUSCH#2. The wireless device may determine the second MCS condition not being satisfied based on 0 ≤ IMCS≤ 28 (e.g., the second threshold is 29) and transform precoding being disabled for the PUSCH#2 and the first MCS table not being used for the PUSCH#2. The wireless device may determine the second MCS condition not being satisfied based on 0 ≤ IMCS≤ 27 (e.g., the second threshold is 28) and transform precoding being enabled for the PUSCH#2. Based on the second MCS condition not being satisfied, the wireless device may determine the TBS of the second TB (transmission via the PUSCH#2) using the second TBS procedure.

[0425] For example, the wireless device may determine the second MCS condition being satisfied based on the MCS index indicated by the first DCI command (e.g., corresponding to the PUSCH#2 with the retransmission of TB) satisfying c0≤ IMCS≤ c1The wireless device may determine the second MCS condition being satisfied based on at least one of the following being fulfilled / met: (Case 4) c0= 28, = 31 (e.g., the second threshold is 28) and when a first MCS table (e.g., 3GPP TS 38.214 Table 5.1.3.1-2, e.g., MCS table 2 for PUSCH) of the at least one MCS table is used for the PUSCH#2 and transform precoding for PUSCH#2 is disabled; or (Case 5) c0= 28, = 31 (e.g., the second threshold is 28) and the transform precoding is enabled for the PUSCH#2

[0426] The wireless device may determine the second MCS condition being satisfied based on the MCS index being larger than 32 (e.g., the second threshold is 32).

[0427] Based on the second MCS condition being satisfied, the wireless device for determining the TBS of the second TB in the PUSCH#2 uses / considers the DCI#4 (or the DCI#6) for the initial transmission of the TB using 0 ≤ IMCS≤ c2where c2=27 or 28. Based on the second MCS condition being satisfied, the wireless device for determining the TBS of the (retransmission of the) TB in the PUSCH#2 uses the second TBS procedure and the DCI#4 / DCI#6 (using 0 ≤ IMCS≤ c2). For Case 1, c2= 27. For Case 2, c2= 27. For some cases, c2= 28. Other values may be possible.

[0428] In FIG. 20C, the wireless device may determine the TBS of the retransmission of the TB using / from the CG configuration based on: the second MCS being satisfied; and the PUSCH#m (for the initial transmission of the TB) being transmitted using the CG UL grant (indicated by the CG configuration), and there is no PDCCH for the second TB using 0 ≤ IMCS≤ c2(c2=27 or 28).Docket No.: 25-1005PCT

[0429] In FIG 20C, the wireless device may determine the TBS of the retransmission of the TB using / from the CG Type 1 configuration based on: the second MCS being satisfied; and the PUSCH#m (for the initial transmission of the TB) being transmitted using the CG UL grant (indicated by the CG Type 1 configuration), and there is no PDCCH for the second TB using 0 ≤ IMCS≤ c2(c2=27 or 28).

[0430] In FIG. 20C, the wireless device may determine the TBS of the retransmission of the TB using / from the DCI #6 activating the CG Type 2 configuration based on: the second MCS being satisfied; and the PUSCH#m (for the initial transmission of the TB) being transmitted using the CG UL grant (indicated by the CG Type 2 configuration), and there is no PDCCH for the second TB using 0 ≤ IMCS≤ c2(c2=27 or 28).

[0431] When the indicated / scheduled / configured MCS index (e.g., by the first DL command and / or the DCI#6 or the CG configuration for the PUSCH transmission) is larger than the threshold, the indicated / scheduled / configured MCS index may be a reserved value in the at least one MCS table.

[0432] FIG. 21 A and FIG. 21 B show examples of phase tracking RS (PT-RS) configuration parameters.

[0433] FIG. 22A shows examples of PTRS transmission (in UL) and PTRS reception (in DL) per aspects of some embodiments of the present disclosure.

[0434] The PTRS reception (in DL) may be referred to as DL PTRS reception in the present disclosure. The DL PTRS reception may be part of a PDSCH reception discussed above associated with embodiments of FIG. 19A and / or FIG. 19B and / or FIG. 19C. The PDSCH reception procedure for receiving the PDSCH may comprise determining DL PT-RS resources (e.g., DL PT-RS time-frequency resources) that are / is used to carry PT-RS in the PDSCH reception. The DL PT-RS time-frequency resources may comprise at least one PT-RS symbol (in / within the scheduled duration of the PDSCH reception, e.g., with length of L symbols) in time domain. The scheduled duration of the PDSCH reception may comprise at least one DL / F symbol / slot of the one or more DL symbols / slots. Corresponding to each symbol of the at least one PT-RS symbol, the DL PT-RS time-frequency resources may comprise at least one PT-RS subcarrier (or RB or PRB or RE) of the scheduled bandwidth of the PDSCH reception corresponding to each PT-RS symbol of the at least one PT-RS symbol. The wireless device may determine the DL PT-RS time-frequency resources (of the PDSCH reception) based on one or more DL PT-RS configuration parameters shown in FIG. 21A. Determining the DL PT-RS time-frequency resources may comprise determining at least a DL PT-RS time density (e.g., LPT-RS) and / or a DL PT-RS frequency density (e.g., KPT-RS).

[0435] FIG. 21 A shows an example of the one or more DL PTRS (or PT-RS) configuration parameters (e.g., PTRS-DownlinkConfig). The one or more configuration parameters (e.g., DMRS-DownlinkConfig) may comprise the one or more DL PT-RS configuration parameters. The one or more DL PT-RS configuration parameters (e.g., PTRS-DownlinkConfig) may configure / indicate DL PT-RS (e.g., for PDSCH receptions). The one or more DL PT-RS configuration parameters may comprise at least one of the following: a DL frequency density (e.g., frequnecyDensity)', and / or a DL time density (e.g., timeDensityDocket No.: 25-1005PCTand / or timeDensityTransformPrecoding)’, and a maximum number of ports for DL PT-RS transmission (e.g., maxNrof Ports'),' and / or a DL resource element offset.

[0436] The DL time density of the one or more DL PT-RS configuration parameters may indicate at least one DL threshold value PTRS-MCS (e.g., ptrs-MCSi for 1=1, 2,..). The values of the at least one DL threshold value PTRS-MCS (e.g., ptrs-MCSi for i=1, 2,...) may be based on a used MCS table of the at least one MCS table (for receiving PDSCH). FIG. 22B shows example values for DL time density of DL PT-RS as a function of a scheduled MCS (e.g., via the MCS field of the scheduling / activating DCI) for the PDSCH reception. When the PT-RS in FIG. 22B is indicated as “PT-RS is not present”, the wireless device may assume the DL PT-RS is not used (in not present) for / in the PDSCH reception. For example, the scheduling DCI (e.g., the DCI #1 or DCI #2 or DCI #2 in FIG. 19A and / or FIG. 19B and / or FIG. 19C) may schedule / indicate the PDSCH reception and the scheduled MCS (IMCS) for the reception of the PDSCH. Based on the scheduled MCS and the least one DL threshold value PTRS-MCS, the wireless device may determine the DL PT-RS time density (e.g., LPT-RS), e.g., for determining the DL PT-RS time-frequency resources.

[0437] If the PTRS-DownlinkConfig indicates that the DL time density thresholds ptrs-MCSi = ptrs-MCS^i, then the wireless device may determine / assume the DL time density LPT-RS of the associated row in FIG.22B where both these DL time density thresholds ptrs-MCSi and ptrs-MCSpi is disabled. The wireless device may avoid (or skip) using the disabled row in FIG. 22B for determining the DL PT-RS time density (e.g, LPT-RS)

[0438] The DL frequency density of the one or more DL PT-RS configuration parameters may indicate at least one DL threshold value NRB(e.g., A / RB, / for 1=0,1, 2,..), e.g., DL frequency density thresholds, with values in range of 1-276. FIG. 22C shows examples of DL frequency density of DL PT-RS as a function of the scheduled bandwidth of the PDSCH reception (NRB). The NRBmay be (or be a function of or interchangeably be used for) the total number of allocated PRBs nPRBfor receiving the PDSCH and / or the total number of REs allocated for the PDSCH NRE. The PDSCH reception procedure may comprise determining the DL PT-RS frequency density (e.g., KPT-RS) based on the scheduled bandwidth for the PDSCH reception (NRB) and the at least one DL threshold value NRB(e.g., RB.; for 1=0,1, 2,...). The DL PT-RS frequency density may provide / indicate the at least one DL PT-RS subcarrier (corresponding to each PT-RS symbol of the at least one PT-RS symbol within the PDSCH reception). The at least one PT-RS subcarriers may belong to a plurality of subcarriers scheduled for the PDSCH reception (e.g., determined based on NRE).

[0439] As FIG. 22A shows, the DL PT-RS time-frequency resources may comprise the at least one PT-RS symbol of the PDSCH reception. The at least one PT-RS symbol may comprise a set of time instances / symbols ( / ') for the PT-RS reception. The set of time instances may comprise one or moreDocket No.: 25-1005PCTsymbols of 1=0, 1,,,,, L-1 allocated for the PDSCH reception. The wireless device may determine the set of time instances ( / ') for the PT-RS reception based on the DL PT-RS time density (e.g., LPT-RS). The set of time instances ( / ') for the PT-RS reception may not comprise PDSCH symbols that are allocated for the DM-RS reception.

[0440] The DL PT-RS time-frequency resources may comprise the at least one PT-RS subcarrier corresponding to each PT-RS symbol of the at least one PT-RS symbol. The DL PT-RS time-frequency resources may comprise the at least one PT-RS subcarrier corresponding to each PT-RS symbol during the PDSCH reception. The wireless device may perform (for each time instance of the set of time instances) a DL PT-RS mapping to map / allocate the DL PT-RS time-frequency resources to resource blocks (e.g., of the scheduled bandwidth, e.g., the plurality of resource blocks) allocated for the PDSCH reception. For example, for the DL PT-RS mapping the wireless device may number the plurality of resource blocks (e.g., of the scheduled bandwidth) from 0 to NRB-1 from a lowest scheduled resource block (of the plurality of resource blocks) to a highest scheduled resource block (of the plurality of resource blocks). For the DL PT-RS mapping, the wireless device may number the at least one subcarrier (corresponding to each PT-RS symbol of the at least one PTRS symbol) of the plurality of resource blocks (with size NRBRBs / subcarriers) in an increasing order from a lowest frequency to NCS-NRB-1. NCSmay indicate a number of subcarriers in each resource block of the plurality of resource blocks scheduled for the PDSCH reception.

[0441] For example, the wireless device may determine the at least one subcarrier (corresponding to each PT-RS symbol of the at least one PTRS symbol) in the plurality of resource blocks based on the DL PT-RS frequency density and / or the DL resource element offset and / or the scheduled bandwidth for the PDSCH reception, e.g., NRB. For example, the at least one subcarrier may comprise subcarriers of the scheduled bandwidth of the PDSCH with indices of k = kref+ (iKPT-RS+ kref)Ncsfor i=0, 1,.... For example, for determining the DL PT-RS time-frequency resources (e.g., for determining the at least one PT-RS subcarrier corresponding to each PT-RS symbol of the at least one PTRS symbol), the wireless device may determine a kref based on at least one of the following: a DM-RS antenna port (for reception of the PDSCH); and / or whether the DM-RS (for reception of the PDSCH) is a DM-RS configuration type 1 or a DM-RS configuration type 2; NRBand / or the DL resource element offset and / or the DL PT-RS frequency density. In one example, when NRBmod KPT-RS— 0, the wireless device may determine kref= nRNTImod KPT-RS. In another example, when NRBmod KPT-RS0, the wireless device may determine kref— nRNTImod nRNTimd KPT-RS)- RNTI may be an RNTI value (e.g., C-RNTI or CS-RNTI or the like) of the scheduling / activating DCI used for scheduling / triggering the PDSCH reception. When the DL resource element offset is not indicated by the one or more DL PT-RS configurationDocket No.: 25-1005PCTparameters, the wireless device may use / assume a predefined resource element offset (e.g, offsetOO) for determining kref.

[0442] The wireless device may assume / determine the DM-RS antenna port (for reception of the PDSCH) associated with a DL PTRS antenna port of the DL PTRS being quasi co-located with respect to ‘TypeA’ and ‘TypeD. When the wireless device is scheduled with a single codeword in PDSCH (e.g., a single TB in the PDSCH reception), the DL PTRS antenna port of the DL PTRS is associated with a lowest / smallest indexed DM-RS antenna port among one or more DM-RS antenna ports (configured / indicated by the DMRS-downlinkConfig and / or the scheduling / activating DCI) assigned for the PDSCH reception.

[0443] When the wireless device is scheduled with two codewords in PDSCH (e.g., two TBs in the PDSCH reception), the DL PTRS antenna port of the DL PTRS is associated with a lowest / smallest indexed DM-RS antenna port among one or more DM-RS antenna ports (configured / indicated by the DMRS-downlinkConfig and / or the scheduling / activating DCI) assigned for the codeword with a higher MCS (value or index). If the MCS indices / values indicated by the scheduling / activating DCI (corresponding to the two codewords) are the same / equal, the DL PTRS antenna port of the DL PTRS is associated with a lowest / smallest indexed DM-RS antenna port corresponding to / assigned for a first codeword (of the two codewords), e.g., codeword 0. For example, the scheduling / activating may comprise two MCS fields (indicating two MCS values) one corresponding to a first TB / codeword of the PDSCH and a second one corresponding to a second TB / codeword of the PDSCH. The wireless device may receive two codewords / TBs in the PDSCH reception scheduled / indicated / triggered by the scheduling / activating DCI. Receiving the first codeword of the two codewords in the PDSCH reception is based on the first MCS value indicated by scheduling / activating DCI. Receiving the second codeword of the two codewords in the PDSCH reception is based on the second MCS value indicated by scheduling / activating DCI.

[0444] If the PTRS-DownlinkConfig indicates that the DL frequency density thresholds NRBI = NRBH-I, then the DL frequency density (e.g, a DL PTRS frequency density) KPTRS of the associated row in FIG. 22C where both these DL frequency density thresholds NRBI and NRBI+I appear in is disabled. The wireless device may avoid (or skip) using the disabled row in FIG. 22C for determining the DL PT-RS frequency density (e.g, LPT-RS).

[0445] When the PTRS-DownlinkConfig comprise / indicate both the DL time density and the DL frequency density, the wireless device may determine the DL PT-RS time-frequency resources based on the PTRS-DownlinkConfig] and / or the DL time density; and / or the DL frequency density; and / or a scheduled MCS (for reception of the PDSCH); and / or a scheduled bandwidth of the PDSCH (for reception of the PDSCH).

[0446] When the PTRS-DownlinkConfig does not comprise / indicate the DL time density and the PTRS-DownlinkConfig comprises / indicates the DL frequency density, the wireless device mayDocket No.: 25-1005PCTassume / consider / set / determine a default value for the DL time density for determining DL PT-RS timefrequency resources. The default value of the DL time density may be 1 or 2 or the like.

[0447] When the PTRS-DownlinkConfig does not comprise / indicate the DL frequency density and the PTRS-DownlinkConfig comprises / indicates the DL time density, the wireless device may assume / consider / set / determine a default value for the DL frequency density for determining DL PT-RS time-frequency resources. The default value of the DL frequency density may be 1 or 2 or the like.

[0448] For determining DL PT-RS time-frequency resources, when the PTRS-DownlinkConfig does not comprise / indicate the DL frequency density and the PTRS-DownlinkConfig does not comprise / indicate the DL time density, the wireless device may assume / consider / set / determine a default value for the DL frequency density and assume / consider / set a default value for the DL time density. The default value of the DL frequency density may be 1 or 2 or the like. The default value of the DL time density may be 1 or 2 or the like.

[0449] When the PTRS-DownlinkConfig does not comprise / indicate the DL frequency density and the PTRS-DownlinkConfig does not comprise / indicate the DL time density, the wireless device may determine / assume the DL PTRS (in the PDSCH reception) is not present based on at least one of the following: the scheduled MCS (for reception of the PDSCH) being less than a first value; and / or a number of scheduled RBs / REs / subcarriers (of the scheduled bandwidths for the PDSCH reception) being less than a second value. The first value may be 10 or 5 or 15 (e.g., depending on an MCS table of the at least one MCS table used for receiving the PDSCH). The second value may be 3.

[0450] For a PDSCH reception with the scheduled duration (or allocation duration) L smaller than 4 symbols, the wireless device may determine / assume the DL PTRS is not used (or applicable) for / in the PDSCH reception, e.g., the wireless device may avoid determining the DL PT-RS time-frequency resources for receiving the PDSCH.

[0451] In the present disclosure, the PTRS transmission (in UL) may be referred to as UL PTRS transmission. The UL PTRS transmission may be part of a PUSCH transmission discussed above associated with embodiments of FIG. 20A and / or FIG. 20B and / or FIG. 20C. The PUSCH transmission procedure for transmitting the PUSCH transmission may comprise determining UL PT-RS resources (e.g., UL PT-RS time-frequency resources) that are / is used to carry PT-RS in the PUSCH transmission. The UL PT-RS time-frequency resources may comprise at least one PT-RS symbol (in / within the scheduled duration / allocation duration of the PUSCH transmission, e.g., with length of L2 symbols in FIG. 22A) in time domain. The scheduled duration of the PUSCH transmission may comprise at least one UL / F symbol / slot of the one or more UL symbols / slots. Corresponding to each symbol of the at least one second PT-RS symbol, the UL PT-RS time-frequency resources may comprise at least one second PT-RS subcarrier (or RB or PRB or RE) of the second scheduled bandwidth of the PUSCH transmission. The wireless deviceDocket No.: 25-1005PCTmay determine the UL PT-RS time-frequency resources (of the PUSCH transmission) based on one or more UL PT-RS configuration parameters shown in FIG. 21 B. Determining the UL PT-RS time-frequency resources may comprise determining at least an UL PT-RS time density (e.g., LPT-RS) and / or an UL PT-RS frequency density (e.g., KPT-RS).

[0452] FIG. 21 B shows an example of the one or more UL PTRS (or PT-RS) configuration parameters (e.g., PTRS-UplinkConfig). The one or more configuration parameters (e.g., DMRS-UplinkConfig) may comprise the one or more UL PT-RS configuration parameters. The one or more UL PT-RS configuration parameters (e.g., PTRS-UplinkConfig) may configure / indicate UL PT-RS (e.g., for PUSCH transmissions). For example, the one or more UL PT-RS configuration parameters may configure UL PT-RS corresponding to a disabled transform precoding (e.g, CP-OFDM based PUSCH transmissions), e.g., via transformPrecoderEnabled in the PTRS-UplinkConfig, and / or an enabled transform precoding (e.g., DFT-s-OFDM based PUSCH transmissions), e.g., via transformPrecoderDisabled in the PTRS-UplinkConfig. The one or more UL PT-RS configuration parameters may comprise at least one of the following: an UL frequency density (e.g., frequnecyDensity in transformPrecoderDisabled)', and / or an UL time density (e.g., timeDensity in transformPrecoderDisabled and / or timeDensityTransformPrecoding in transformPrecoderEnabled),' and an UL maximum number of ports for UL PT-RS transmission (e.g., maxNrofPorts) and / or an UL resource element offset; and / or an UL PTRS power (e.g., ptrs-Power),' and / or an UL sample density (e.g., sampleDensity in transformPrecoderEnabled).

[0453] The UL time density of the one or more UL PT-RS configuration parameters may indicate at least one UL threshold value PTRS-MCS (e.g., ptrs-MCS, for 1=1, 2,...). The values of the at least one UL threshold value PTRS-MCS (e.g., ptrs-MCS for 1=1, 2,...) may be based on a used MCS table of the at least one MCS table (for transmitting PUSCH). FIG. 22B may show also example values for the at least one UL threshold value PTRS-MCS (e.g., ptrs-MCSi for 1=1, 2,...) and for the UL time density of DL PT-RS as a function of a scheduled MCS (e.g., via the MCS field of the scheduling / activating DCI, e.g., a second scheduled modulation order) for the PUSCH transmission. The wireless device may use the at least one UL threshold value PTRS-MCS for determining / obtaining the UL time density of UL PT-RS as a function of the scheduled MCS for the PUSCH transmission (e.g., by the first DL command). For example, the first DL command (e.g, the DCI #4 or DCI #5 or DCI #6 in FIG 20A and / or FIG. 20B and / or FIG. 20C) may schedule the PUSCH transmission and the scheduled MCS (IMCS) for the transmission of the PUSCH transmission (e.g., via the MCS field of the first DL command). Based on the scheduled MCS and the least one UL threshold value PTRS-MCS, the wireless device may determine the UL PT-RS time density (e.g., LPT-RS), e.g., for determining the UL PT-RS time-frequency resources.

[0454] If the PTRS-ULlinkConfig indicates that the UL time density thresholds ptrs-MCSi = ptrs-MCS, then the wireless device may determine / assume the UL time density LPT-RS of the associated row in FIG.Docket No.: 25-1005PCT22B where both these UL time density thresholds ptrs-MCS, and ptrs-MCSi+i is disabled. The wireless device may avoid (or skip) using the disabled row in FIG. 22B for determining the UL PT-RS time density (e.g., LPT-RS). The UL PT-RS time density (e.g., LPT-RS) may indicate the at least one second PT-RS symbol of the PUSCH transmission (e.g., with the scheduled duration of the PUSCH transmission, e.g., with the length L2=NSym symbols) that is used for the UL PT-RS transmission.

[0455] When the transform precoding is disabled for the PUSCH transmission (e.g., OFDM based PUSCH transmission), the UL frequency density of the one or more UL PT-RS configuration parameters (e.g., frequnecyDensity in transformPrecoderDisabled) may indicate at least one UL threshold value NRB(e.g., / VRS. / fori =0,1, 2,...), e.g., UL frequency density thresholds, with values in range of 1-276. FIG. 22C may also show examples of the UL frequency density of PT-RS as a function of the second scheduled bandwidth of the PUSCH transmission (NRB) and the UL frequency density, e.g., when the transform precoding is disabled for the PUSCH transmission (e.g., OFDM based PUSCH transmission). The Nfismay be (or be a function of or interchangeably be used for) the second total number of allocated PRBs nPRBfor transmitting the PUSCH and / or the second total number of REs allocated for the PUSCH NRE. The PUSCH transmission procedure may comprise determining the UL PT-RS frequency density (e.g., KPT-RS) based on the second scheduled bandwidth for the PUSCH reception (NRB) and the at least one UL threshold value NRB(e.g., NRB, / for 1=0,1, 2...). The UL PT-RS frequency density may provide / indicate the at least one UL PT-RS subcarrier (corresponding to each PT-RS symbol of the at least one PT-RS symbol within the PUSCH transmission). The at least one PT-RS subcarrier may belong to a second plurality of subcarriers scheduled for the PUSCH transmission (e.g., determined based on NRE).

[0456] The NRBmay be (or be a function of or interchangeably be used for) the second total number of allocated PRBs nPRBfor transmitting the PUSCH and / or the second total number of REs allocated for the PUSCH NRE. The PUSCH transmission procedure may comprise determining the UL PT-RS frequency density (e.g., KPT-RS) based on the second scheduled bandwidth for the PUSCH reception (NRB) and the at least one UL threshold value NRB(e.g., NRB, / for 1=0,1, 2...). The UL PT-RS frequency density may provide / indicate the at least one UL PT-RS subcarrier (corresponding to each PT-RS symbol of the at least one PT-RS symbol within the PUSCH transmission). The at least one PT-RS subcarrier may belong to a second plurality of subcarriers scheduled for the PUSCH transmission (e.g, determined based on NRE).

[0457] The UL PT-RS time-frequency resources may comprise the at least one PT-RS symbol of the PUSCH transmission. The at least one PT-RS symbol may comprise a set of time instances ( / ') for the PT-RS transmission. The set of time instances may comprise one or more symbols of 1=0, 1,,,,, L2-1 allocated for the PUSCH transmission. The wireless device may determine the set of time instances ( / ') for the PT-RS transmission based on the UL PT-RS time density. The set of time instances ( / ') for the PT-RS transmission may not comprise PUSCH symbols that are allocated for the DM-RS transmissions.Docket No.: 25-1005PCT

[0458] The UL PT-RS time-frequency resources may comprise the at least one PT-RS subcarrier corresponding to each PT-RS symbol of the at least one PT-RS symbol. The PT-RS time-frequency resources may comprise the at least one PT-RS subcarrier corresponding to each PT-RS symbol during the PUSCH transmission. The wireless device may perform (for each time instance of the set of time instances) an UL PT-RS mapping to map / allocate the UL PT-RS time-frequency resources to resource blocks (e.g., of the second scheduled bandwidth, e.g., the second plurality of resource blocks) allocated for the PUSCH transmission. For example, for the UL PT-RS mapping the wireless device may number the second plurality of resource blocks from 0 to NRB-1 from a lowest scheduled resource block (of the second plurality of resource blocks) to a highest scheduled resource block (of the second plurality of resource blocks). For the UL PT-RS mapping, the wireless device may number the at least one subcarrier (corresponding to each PT-RS symbol of the at least one PT-RS symbol) in the second plurality of resource blocks (with size NRBRBs / subcarriers) in an increasing order from a lowest frequency to NCS. NRB-1. NCSmay indicate a number of subcarriers in each resource block of the second plurality of resource blocks scheduled for the PUSCH transmission.

[0459] For example, the wireless device may determine the at least one subcarrier (corresponding to each PT-RS symbol of the at least one PTRS symbol) in the second plurality of resource blocks based on the UL PT-RS frequency density and / or the UL resource element offset and / or the second scheduled bandwidth for the PUSCH transmission, e.g., NRB. For example, the at least one subcarrier may comprise subcarriers of the second scheduled bandwidth of the PUSCH with indices of k = kref+ (iKPT-RS+ k^^Ncs for i=0, 1,.... For example, for determining the UL PT-RS time-frequency resources (e.g., for determining the at least one PT-RS subcarrier corresponding to each PT-RS symbol of the at least one PTRS symbol), the wireless device may determine a kref based on at least one of the following: a DM-RS antenna port (for transmission of the PUSCH); and / or whether the DM-RS (for transmission of the PUSCH) is a DM-RS configuration type 1 or a DM-RS configuration type 2; NRBand / or the UL resource element offset and / or the UL PT-RS frequency density. In one example, when NRBmod KPT-RS= 0, the wireless device may determine kref= nRNTImod KPT-RS. In another example, when NRBmod KPT-RS0, the wireless device may determine kref= nRNTImod (nRNTImod KPT-RS). nRNTImay be an RNTI value (e.g., C-RNTI or CS-RNTI or the like) of the scheduling / activating DCI used for scheduling / triggering the PUSCH transmission. When the UL resource element offset is not indicated by the one or more UL PT-RS configuration parameters, the wireless device may use a predefined resource element offset (e.g., offsetOO) for determining the at least one subcarrier (corresponding to each PT-RS symbol) in the second plurality of resource blocks.

[0460] When the transform precoding is disabled (e.g., the at least one transform precoding condition is not satisfied) for the PUSCH transmission and the PTRS-UplinkConfig does not comprise / indicate the ULDocket No.: 25-1005PCTtime density and the PTRS-UplinkConfig comprises / indicates the UL frequency density, the wireless device may assume / consider / set / determine a default value for the UL time density for determining UL PT-RS timefrequency resources. The default value of the UL time density may be 1 or 2 or the like.

[0461] When the transform precoding is disabled for the PUSCH transmission and the PTRS-UplinkConfig does not comprise / indicate the UL frequency density and the PTRS-UplinkConfig comprises / indicates the UL time density, the wireless device may assume / consider / set / determine a default value for the UL frequency density for determining UL PT-RS time-frequency resources. The default value of the UL frequency density may be 1 or 2 or the like.

[0462] When the transform precoding is disabled for the PUSCH transmission and the PTRS-UplinkConfig does not comprise / indicate the UL frequency density and the PTRS-UplinkConfig does not comprise / indicate the UL time density, the wireless device may assume / consider / set / determine a default value for the UL frequency density and a default value for the UL time density for determining UL PT-RS time-frequency resources. The default value of the UL frequency density may be 1 or 2 or the like. The default value of the UL time density may be 1 or 2 or the like.

[0463] Based on the initial PUSCH transmission (e.g., an initial transmission of the TB) being the CG PUSCH transmission of the CG Type 2 configuration (e.g., the CG Type 2 PUSCH transmission), for determining the PT-RS time density, the wireless device may determine the scheduled MCS from a latest (or most recent) PDCCH monitoring occasion / reception activating / scheduling the CG Type 2 configuration. For example, the wireless device may receive via the latest PDCCH monitoring occasion / reception DCI#6 activating the CG Type 2 configuration.

[0464] Based on the initial PUSCH transmission (e.g., an initial transmission of the TB) being the CG PUSCH transmission of the CG Type 2 configuration (e.g., the CG Type 2 PUSCH transmission), for determining the PT-RS time density, the wireless device may determine the scheduled MCS from an MCS index / parameter configured / indicated by the CG Type 1 configuration (e.g., configuredGrantConfiguraion for the configured grant Type 1 PUSCH).

[0465] For example, the scheduling / activating DCI (e.g., the DCI#4 or the DCI#5 or the DCI#6) may schedule / indicate two codewords / TBs for the PUSCH transmission (e.g., the initial PUSCH transmission). The PUSCH transmission may be with the disabled transform precoder. The scheduling DCI may indicate two MCS values / indices corresponding to two codewords / TBs. A first MCS of the two MCS values / indices may correspond / associated with a first codeword / TB of the two codewords / TBs. A second MCS of the two MCS values / indices may correspond / associated with a second codeword / TB of the two codewords / TBs. The two MCS values / indices may be for the initial PUSCH transmission of the two codewords. The scheduling DCI may comprise a PTRS-DM-RS association field indicating an association between a PTRS port (of the UL PTRS) and DM-RS port(s) (of UL DM-RS). The association between the PTRS port and theDocket No.: 25-1005PCTDM-RS port(s) may correspond to a selected codeword (by the wireless device) of the two codewords indicated by the scheduling DCI. The wireless device may determine the selected codeword (among the two codewords) based on the two MCS values / indices of the scheduling DCI. For example, the selected codeword may be a codeword of the two codewords with a higher MCS value (the two MCS values), e.g., if the two MCS values are different. The selected codeword may be a codeword 0 of the two codewords for an initial PUSCH if the indicated MCS values for the initial PUSCH transmission of the two codewords are the same.

[0466] When the transform precoding is disabled (e.g., the at least one transform precoding condition is satisfied) for the PUSCH transmission and the UL maximum number of ports for UL PT-RS transmission (e.g, maxNrof Ports) in the PTRS-UplinkConfig is set to value Ti2’, if the scheduling / activating DCI schedule the wireless device with two codewords / TBs in the PUSCH transmission, the wireless device may determine the UL PTRS time density for both PTRS ports based on the higher MCSs (of the two MCS values) of the two codewords. The higher MCSs (of the two MCS values) of the two codewords may be associated with an initial transmission of the PUSCH transmission.

[0467] When the transform precoding is disabled for the PUSCH transmission and the UL maximum number of ports for UL PT-RS transmission (e.g., maxNrofPorts) in the PTRS-UplinkConfig is set to value ‘n1 ', if the scheduling / activating DCI schedule the wireless device with two codewords / TBs in the PUSCH transmission, the wireless device may determine the PTRS port is associated with the higher MCSs (of the two MCS values indicated by the scheduling / activating DCI schedule) of the two codewords. Based on the higher MCSs (indicated by the scheduling / activating DCI schedule, e.g., DCI#4) of the two codewords being the same (equal), the PTRS antenna port may be associated with codeword 0 of the two scheduled codewords. When a codeword of the two codewords is scheduled to transmit PUSCH for retransmission (e.g., the PUSCH transmission being a retransmission of the codeword), the MCS for determining the PTRS association to codeword is obtained from a DCI (e.g., from MCS filed of the DCI, e.g., DCI #5) for the same transport block in the initial transmission of the PUSCH.

[0468] When the transform precoding is enabled for the PUSCH transmission (e.g., DFT-s-OFDM based PUSCH transmission) and the PTRS-UplinkConfig indicates / comprises the transformPrecoderEnabled, the UL sample density of the one or more UL PT-RS configuration parameters (e.g., sampleDensity in transformPrecoderEnabled) may indicate at least one UL threshold value NRB(e.g., / VRBZ for 1=0,1, 2,...), e.g., UL sample density thresholds, with values in range of 1-276. FIG. 22D shows examples of PT-RS group pattern as a function of a scheduled bandwidth of the PUSCH transmission (NRB) and the UL sample density when the transform precoding is enabled for the PUSCH transmission (e.g., DFT-s-OFDM based PUSCH transmission). When transformPrecoderEnabled does not indicateDocket No.: 25-1005PCTtimeDensityTransformPrecoding, the wireless device may determine the UL PTRS time density equal (e.g., LPT-RS) to a default value (e.g., 1), e.g.,

[0469] FIG. 22D illustrates an example PT-RS group pattern as a function of scheduled bandwidth per aspects of some embodiments of the present disclosure. When the transform precoding is enabled for the PUSCH transmission (e.g., DFT-s-OFDM based PUSCH transmission) and the PTRS-UplinkConfig indicates / comprises the transformPrecoderEnabled, if the UL sample density (indicated by transformPrecoderEnabled) indicates that the UL sample density thresholds NRBI = NRBI+I, then the associated row in FIG. 22D where both these UL sample density thresholds NRBI and NRBI+I appear in is disabled. The wireless device may avoid (or skip) using the disabled row in FIG. 22D for determining PTRS groups (e.g., Ng™uP) and number of sample per PTRS groups (e.g.,

[0470] When the transform precoding is enabled for the PUSCH transmission, the PUSCH transmission procedure may comprise determining a number of PT-RS groups (e.g., 7 / ™uP) based on the second scheduled bandwidth for the PUSCH transmission (NRB) and the at least one UL threshold value NRB(e.g., NRBPO[ 1=0,1, 2...), e.g., indicated by the UL sample density. The PUSCH transmission procedure may further comprise determining a number of samples per PT-RS group (e.g., / V^™“e) of the number of PTRS groups based on the second scheduled bandwidth for the PUSCH transmission (NRB) and the at least one UL threshold value NRB. For example, as FIG. 22D shows, corresponding to NRB4< NRB, the wireless device may determine Ng™^ = 8 and / Va™“e= 4. FIG. 22D shows other examples as well.

[0471] When the transform precoding is enabled for the PUSCH transmission, the PUSCH transmission procedure may comprise determining an UL PT-RS symbol mapping based on the second scheduled bandwidth for the PUSCH transmission (N B) and the at least one UL threshold value NRBindicated by the UL sample density. The wireless device may determine the UL PT-RS symbol mapping based on the number of PT-RS groups (e.g., Ng oup and / or the number of samples per PT-RS group (e.g.,of the number of PT-RS groups; and / or the second scheduled BW for the PUSCH transmission. The UL PT-RS symbol mapping may indicate an index (or position) m (e.g., before performing transform precoding) of each PT-RS sample (for transmitting a PT-RS signal) corresponding to each PT-RS symbol of the at least one PT-RS symbol in the PUSCH transmission. The index m of each PT-RS sample corresponding to each PT-RS symbol may further indicate the at least one PT-RS subcarrier (of the second plurality of subcarriers) for transmitting the PT-RS signal in the corresponding PT-RS symbol. In one example for Ngroup =2and Np^ple= 2, the index m may be m = s + K - 1 for s=1, 3 and k=0, 1. Inanother example, for Ng™up — 2 and N^^ple— 4, the index m may be m = sMsc+ K for s=0 and k=0, 1, 2,3 or for s=1 and k=-4, -3, -2,-1. In yet another example, for NgP^p= 4 and / Vs^™“fe= 2, theDocket No.: 25-1005PCTindex m may be m = + k — 1 for s=1, 3, 5, 7 and k=0, 1. Similar formulas for combinations of(N^0Rup = 4 and N9^pe= 4) and (N™, = 8 and = 4) are also possible although not discussed here.

[0472] When the transform precoding is enabled for the PUSCH transmission, for transmitting the PTRS in an OFDM symbol I (of the PUSCH transmission), e.g if symbol I is one of the at least one PTRS symbol, the wireless device may determine the PTRS signal ( rm(m')) for index / position m (e.g., before performing transform precoding) based on the number of PT-RS groups; the number of samples per PT-RS group (e.g., Ng^ple); and / or the second scheduled BW for the PUSCH transmission. For example, rm(m') = m') for m' = N:^Pes' + k', s' = 0, 1,..., Wjr™sp- 1. k' =0, 1,..., — 1. fl(m, m') may be a function of index / position m and m’ and a pseudo-random sequence that is initialized with a value cjnit. iv( / c') may be an orthogonal sequence that is obtained (by the wireless device) according to at least one of the following: Ws^™“eand nRNTI. For example, when sample 2, dnRNTImodNsg^ple= 0, then w(fc') = [+1 + 1] and if nRNTImodNs9^pe= l, then w(fc') = [+1 - 1], For example, when Ns9^pe= 4, if nRNTImodN9^pe= 0, then w(fc') = [+1 + 1 + 1 + 1] and if sample=4, ^en w( / c / ) = [+1 — 1 + 1 — 1] and if n^modW / ™ = 2, then w( / c') = [+1 + 1 - 1 - 1] and if nRNTImodN9^pe= 3, then w( / c') = [+1 - 1 - 1 + 1],

[0473] Parameter / ?' may be an UL PTRS scaling factor for transmission of the PTRS. Parameter / ?' may be a ratio between an amplitude of one of the outermost constellation points for the modulation scheme used for the PUSCH transmission and one of the outermost constellation points for TT / 2-BPSK. 4 For example, for the CG Type 2 PUSCH transmissions (activated by the DCI#6) and dynamically schedule PUSCH transmissions (e.g., scheduled by the first DL command and / or the DCI#5), the wireless device may determine the (scheduled) modulation order (Qm) based on the MCS index IMCS indicated by the first DL command (and / or the DC l#5) and / or the at least one MCS table. For example, for CG type 1 PUSCH transmissions, the wireless device may determine the (scheduled) modulation order (Qm) based on the MCS index IMCS indicated by the mcsAndTBS in the rrc-ConfiguredUplinkGrant provided / indicated by the configuredGrantConfig and / or the at least one MCS table. In an example, for the scheduled modulation set to ’16QAM’, / ?' = 3 / 5; for the scheduled modulation set to ’64QAM', / ?' = 7 / V21; for the scheduled modulation set to ’256QAM’, / ?' = 15 / V85 Other examples are also possible.

[0474] When the one or more configuration parameters (e.g., the PUSCH-Config) enables pi / 2-BPSK modulation with transform precoding for the DTF-s-OFDM based PUSCH transmission (e.g., if tp-pi2BPSK in the PUSCH-Config is enabled / present or is not absent / disabled), the wireless device may determine theDocket No.: 25-1005PCTmodulation order Q_m=1 for an MCS table of the at least one MCS table corresponding to transform precoding and 64QAM.

[0475] When the one or more configuration parameters (e.g., the PUSCH-Config) disables the pi / 2-BPSK modulation with transform precoding for the DTF-s-OFDM based PUSCH transmission (e.g., if tp-pi2BPSK in the PUSCH-Config is absent / disabled), the wireless device may determine the modulation order Q_m=2 for an MCS table of the at least one MCS table corresponding to transform precoding and 64QAM.

[0476] FIG. 23A illustrates an example of PUSCH transmission when a transform precoding is enabled comprising UL PTRS transmission as per an aspect of an embodiment of the present disclosure.Transmission of the PUSCHs (shown in FIG. 23A) may be based on embodiments discussed above (e.g., according to FIG 20A and / or FIG. 20B and / or FIG. 20C and / or FIG. 22A). As shown the wireless device may transmit to the base station (e.g., via the serving cell) the initial transmission of the PUSCH. The initial PUSCH transmission may be with the dynamic grant (e.g., scheduled by the first DL command e.g., the DCI#4) or the configured grant (e.g., the CG Type 2 PUSCH transmission activated by the DCI #6 or the CG Type 1 PUSCH transmission).

[0477] In one example, corresponding to the initial transmission of the PUSCH, the wireless device may determine that the transform precoding being disabled (e.g., the initial transmission of the PUSCH is with the disabled transform precoder), e.g., in response to determining the at least one transform precoding condition (corresponding to the initial transmission of the PUSCH) not being satisfied. Alternatively, in another example of FIG. 23A, corresponding to the initial transmission of the PUSCH, the wireless device may determine that the transform precoding being enabled (e.g., the initial transmission of the PUSCH is with the enabled transform precoder), e.g., in response to determining the at least one transform precoding condition (corresponding to the initial transmission of the PUSCH) being satisfied.

[0478] As shown in FIG. 23A (and similar to embodiment of FIG. 20C) the wireless device may receive from the base station the DCI#5 scheduling / indicating the retransmission of the PUSCH transmission. For example, the wireless device may determine the retransmission of the PUSCH transmission comprises the UL PTRS transmission (e.g., as discussed above according to FIG. 21 B and / or FIG. 22A and / or FIG. 22B and / or FIG. 22C and / or FIG. 22D). As shown in FIG. 23A, corresponding to the transmission of the PUSCH retransmission, the wireless device may determine the indicated MCS index by the DCI#5 is larger than the second threshold (e.g., the indicated MCS by the DCI#5 is the reserved MCS in the at least one MCS table), e.g., the wireless device may determine the second MCS condition being satisfied.

[0479] As shown in FIG. 23A, corresponding to the transmission of the PUSCH retransmission, the wireless device may further determine that the transform precoding being enabled (e.g., the transmission of the PUSCH retransmission is with the enabled transform precoder), e.g., in response to determining the at least one transform precoding condition (corresponding to the transmission of the PUSCH retransmission)Docket No.: 25-1005PCTbeing satisfied Corresponding to the transmission of the PUSCH retransmission, the wireless device may further determine the one or more UL PTRS configuration parameters (e.g., PTRS-UplinkConfig) comprise / indicate transformPrecoderEnabled.

[0480] In an example embodiment, for the retransmission of the PUSCH transmission with the enabled transform precoding and when the indicated MCS index for the retransmission of the PUSCH is larger than the second threshold, the wireless device may determine the UL PTRS scaling factor / ?' based on an MCS index used for the initial transmission of the PUSCH transmission. The MCS index may be used for the initial transmission of the PUSCH transmission (e.g., indicated by the first DL command (not shown in FIG.23A)), e.g., when the initial PUSCH transmission is with the dynamic grant. When the initial PUSCH transmission is with the configured grant of Type 2 (eg., activated by the DCI#6), the MCS index for the initial transmission of the PUSCH transmission is indicated by the DCI#6 (e.g., the most recent CG PUSCH scheduling grant PDCCH). When the initial PUSCH transmission is with the configured grant of Type 1, the MCS index for the initial transmission of the PUSCH transmission is indica...

Claims

Docket No.: 25-1005PCTCLAIMSWhat is claimed is:

1. A method comprising:receiving, by a wireless device, one or more configuration parameters indicating:sub-band full-duplex (SBFD) symbols; andfrequency domain locations and bandwidths of one or more downlink sub-bands of the SBFD symbols;receiving a downlink control information (DCI) indicating a plurality of resource blocks (RBs) scheduled for a physical downlink shared channel (PDSCH) reception in one or more SBFD symbols of the SBFD symbols;determining one or more RBs, of the plurality of RBs, that fully overlap in a frequency domain with the one or more downlink sub-bands;determining, based on the one or more RBs, a frequency density of a downlink phase tracking reference signal (PTRS);receiving, in the one or more SBFD symbols:the PDSCH reception; andthe downlink PTRS using the frequency density; andtransmitting a hybrid automatic repeat request (HARQ) acknowledgment information for the PDSCH reception.

2. A method comprising:receiving, by a wireless device and in one or more SBFD symbols, a downlink phase tracking reference signal (PTRS) using a frequency density, wherein the frequency density is determined using one or more RBs that fully overlap in a frequency domain with one or more downlink sub-bands.

3. The method of claim 2, further comprising receiving one or more configuration parameters indicating at least one of:sub-band full-duplex (SBFD) symbols; orfrequency domain location and bandwidth of one or more downlink sub-bands of the SBFD symbols.

4. The method of any one of claims 2 to 3, further comprising receiving, by the wireless device, a downlink control information (DCI) indicating a plurality of resource blocks (RBs) scheduled for a physical downlink shared channel (PDSCH) reception.

5. The method of claim 4, wherein the PDSCH reception is in the one or more SBFD symbols of the SBFD symbols.Docket No.: 25-1005PCT6. The method of any one of claims 4 to 5, further comprising determining the one or more RBs, of the plurality of RBs, that fully overlap in frequency domain with the one or more downlink sub-bands.

7. The method of claim 6, further comprising determining, based on the one or more RBs, the frequency density of the PTRS.

8. The method of any one of claims 4 to 7, further comprising receiving, in the one or more SBFD symbols, the PDSCH reception.

9. The method of any one of claims 4 to 8, further comprising transmitting a hybrid automatic repeat request (HARQ) acknowledgment information for the PDSCH reception.

10. The method of any one of claims 3 to 9, wherein the one or more configuration parameters further indicate a downlink bandwidth part (BWP), wherein the one or more RBs are in both the downlink BWP and the one or more downlink sub-bands.

11. The method of any one of claims 3 to 10, wherein the one or more configuration parameters comprise at least one frequency density threshold.

12. The method of claim 11, wherein the determining the frequency density of the PTRS is based on a comparison between a number of RBs of the one or more RBs and the at least one frequency density threshold.

13. The method of claim 12, wherein the frequency density is a first value in response to:the number of RBs, of the one or more RBs, being larger than a first frequency density threshold of the at least one frequency density threshold; orthe number of RBs, of the one or more RBs, being smaller than a second frequency density threshold of the at least one frequency density threshold.

14. The method of claim 13, wherein the first value is 2.

15. The method of claim 12, wherein the frequency density is a second value in response to the number of RBs, of the one or more RBs, being larger than a second frequency density threshold of the at least one frequency density threshold.

16. The method of claim 15, wherein the second value is 4.

17. The method of any one of claims 3 to 16, wherein the one or more configuration parameters further indicate a frequency domain location and bandwidth of an uplink sub-band of the SBFD symbols.

18. The method of claim 17, wherein no RB of the one or more RBs overlap in frequency domain with the uplink sub-band.

19. The method of claim 17, further comprising determining, by the wireless device, that at least one RB, of the plurality of RBs, is fully or partially overlapping in the frequency domain with the uplink subband.Docket No.: 25-1005PCT20. The method of claim 19, wherein the one or more RBs exclude the at least one RB of the plurality of RBs.

21. The method of any one of claims 2 to 20, further comprising determining at least one subcarrier of the one or more RBs, for the PTRS, in an SBFD symbol of the one or more SBFD symbols.

22. The method of claim 21, wherein the receiving the PTRS in the SBFD symbol is via the at least one subcarrier in the SBFD symbol.

23. The method of any one of claims 8 to 22, wherein the receiving the PDSCH, in the one or more SBFD symbols, is via the one or more RBs.

24. The method of any one of claims 11 to 23, wherein the at least one frequency density threshold corresponds to the SBFD symbols.

25. The method of claim 24, wherein the one or more configuration parameters comprise at least one second frequency density threshold corresponding to non-SBFD symbols.

26. The method of claim 25, wherein, in response to the PDSCH reception being during the one or more SBFD symbols, the determining the frequency density:is based on the at least one frequency density threshold corresponds to the SBFD symbols; and is not based on the at least one second frequency density threshold corresponding to non-SBFD symbols.

27. The method of any one of claims 11 to 26, further comprising transmitting a capability message indicating:a first number of values for PTRS frequency density thresholds corresponding to SBFD symbols; anda second number of values for PTRS frequency density thresholds corresponding to non-SBFD symbols.

28. The method of any one of claims 2 to 27, wherein a first number of RBs of the one or more RBs is less than a second number of RBs of the plurality of RBs.

29. The method of any one of claims 4 to 28, wherein the DCI indicates the one or more SBFD symbols for the PDSCH reception.

30. The method of any one of claims 4 to 29, wherein the plurality of RBs comprise assigned RBs for the PDSCH reception.

31. The method of any one of claims 4 to 30, wherein the plurality of RBs comprise scheduled bandwidth for the PDSCH reception.

32. The method of any one of claims 7 to 31, further comprising:receiving a second DCI indicating a second plurality of resource blocks (RBs) scheduled for a second physical downlink shared channel (PDSCH) reception in one or more non-SBFD symbols;Docket No.: 25-1005PCTdetermining, based on the second plurality of RBs, a second frequency density of a second downlink phase tracking reference signal (PTRS); andreceiving, in the one or more non-SBFD symbols:the second PDSCH reception using the second plurality of RBs; andthe second downlink PTRS using the second frequency density.

33. The method of any one of claim 7 to 32, further comprising:receiving a third DCI indicating a third plurality of resource blocks (RBs) scheduled for a third physical downlink shared channel (PDSCH) reception in one or more third SBFD symbols of the SBFD symbols, wherein at least one RB of the third plurality of RBs does not fully overlap in frequency domain with the one or more downlink sub-bands;determining one or more third RBs, of the plurality of third RBs, that fully overlap in frequency domain with the one or more downlink sub-bands, wherein the one or more third RBs do not comprise the at least one RB;determining, based on the one or more third RBs, a third frequency density of a third downlink phase tracking reference signal (PTRS); andreceiving, in one or more third SBFD symbols of the SBFD symbols:the third PDSCH reception using the one or more third RBs; andthe third downlink PTRS using the third frequency density.

34. The method of claim 33, wherein the determining the one or more third RBs is in response to the at least one RB of the third plurality of RBs not fully overlapping in frequency domain with the one or more downlink sub-bands.

35. The method of any one of claims 7 to 34, further comprising:receiving a fourth DCI indicating a fourth plurality of resource blocks (RBs) scheduled for a fourth physical downlink shared channel (PDSCH) reception in one or more fourth SBFD symbols of the SBFD symbols, wherein the third plurality of RBs fully overlap in frequency domain with the one or more downlink sub-bands;determining, based on the fourth plurality of RBs, a fourth frequency density of a fourth downlink phase tracking reference signal (PTRS); andreceiving, in one or more fourth SBFD symbols of the SBFD symbols:the fourth PDSCH reception using the fourth plurality of RBs; andthe fourth downlink PTRS using the fourth frequency density.

36. The method of any one of claims 11 to 35, further comprising:Docket No.: 25-1005PCTreceiving a fifth DCI indicating a fifth plurality of resource blocks (RBs) scheduled for a fifth physical downlink shared channel (PDSCH) reception in one or more fifth SBFD symbols of the SBFD symbols;determining one or more fifth RBs, of the fifth plurality of RBs, that fully overlap in frequency domain with the one or more downlink sub-bands;determining that a fifth downlink PTRS is not present in the fifth PDSCH reception, based on a number of RBs of the one or more fifth RBs being smaller than a first frequency threshold of the at least one frequency density threshold; andreceiving, in the one or more fifth SBFD symbols, the fifth PDSCH reception using the fifth plurality of RBs.

37. The method of claim 36, further comprising not receiving the fifth downlink PTRS in the one or more fifth SBFD symbols in response to the fifth downlink PTRS not being present in the fifth PDSCH reception.

38. The method of any one of claims 36 to 37, wherein in response to the fifth downlink PTRS not being present in the PDSCH reception, no subcarrier of the one or more fifth RBs, in each SBFD symbol of the one or more fifth SBFD symbols, is used for the fifth downlink PTRS.

39. The method of any one of claims 7 to 38, further comprising:receiving a sixth DCI indicating a sixth plurality of resource blocks (RBs) scheduled for a sixth physical downlink shared channel (PDSCH) reception in one or more sixth SBFD symbols of the SBFD symbols;determining one or more sixth RBs, of the sixth plurality of RBs, that fully overlap in frequency domain with the one or more downlink sub-bands;determining that a sixth downlink PTRS not presenting in the sixth PDSCH reception, based on a number of RBs of the one or more sixth RBs being smaller than a pre-defined value; and receiving, in the one or more sixth SBFD symbols, the sixth PDSCH reception using the one or more sixth RBs.

40. The method of claim 39, further comprising not receiving the sixth downlink PTRS in the one or more sixth SBFD symbols in response to the sixth downlink PTRS not being present in the sixth PDSCH reception.

41. The method of any one of claims 39 to 40, wherein, in response to the sixth downlink PTRS not being present in the sixth PDSCH reception, no subcarrier of the one or more sixth RBs, in each SBFD symbol of the one or more sixth SBFD symbols, is used for the sixth downlink PTRS.

42. The method of any one of claims 39 to 41, wherein the predefined value is 3.

43. A method comprising:Docket No.: 25-1005PCTreceiving, by a wireless device, one or more radio resource control (RRC) messages comprising at least one semi-persistent scheduling (SPS) configuration;receiving a first downlink control information (DCI) indicating:a semi-persistent scheduling (SPS) activation of a first SPS configuration of the at least one SPS configuration; anda first modulation and coding scheme (MCS) index;receiving, using the first MCS index and the first SPS configuration, an initial PDSCH with a transport block (TB);receiving a second DCI indicating:a second MCS index, wherein the second MCS index is larger than a threshold; and a retransmission of the TB;determining, based on the first MCS index, a time density of a downlink phase tracking reference signal (PTRS); andreceiving the downlink PTRS using the time density.

44. The method of claim 43, wherein the determining the time density is further based on the second MCS index being larger than the threshold.

45. The method of any one of claims 43 to 44, wherein the first MCS index is smaller than or equal to the threshold.

46. The method of any one of claims 43 to 45, wherein the receiving the first DCI comprises receiving a most recent SPS assignment physical downlink control channel (PDCCH).

47. The method of any one of claims 43 to 46, wherein the one or more RRC messages comprise one or more downlink PTRS configuration parameters indicating at least one PTRS MCS threshold, wherein the determination of the time density is further based on the at least one PTRS MCS threshold.

48. The method of claim 47, further comprising determining a first value for the time density based on the first MCS index being larger than or equal to a first PTRS MCS threshold of the at least one PTRS MCS threshold.

49. The method of claim 47, further comprising determining a second value for the time density based on the first MCS index being smaller than a second PTRS MCS threshold of the at least one PTRS MCS threshold.

50. The method of any one of claims 43 to 49, further comprising, based on the second DCI, receiving a second PDSCH with the TB.

51. A wireless device comprising:one or more processors; andDocket No.: 25-1005PCTmemory storing instructions that, when executed by the one or more processors, cause the wireless device to perform the method of any one of claims 1 to 50.

52. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to perform the method of any one of claims 1 to 50.

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