Phase-tracking reference signal (PT-RS) transmission on pusch with orthogonal cover code (OCC)

Abstract

A User Equipment (UE) configured for operation in a new radio (NR) network may decode signalling (e.g., configuration information) to configure the UE for transmission of phase-tracking reference signals (PT-RS) for a PUSCH transmission with an orthogonal cover code (OCC). The UE may determine a PT-RS pattern based on a bandwidth for the PUSCH transmission and length of the OCC. The UE may also apply the OCC to one or more OFDM symbols of the PUSCH transmission, the PUSCH transmission comprising the PT-RS in accordance with the PT-RS pattern. The OCC may be applied either across OFDM symbols or within an OFDM symbol. The PUSCH transmission may comprise a Discrete Fourier Transform-spread orthogonal frequency division multiplexed (DFT-S-OFDM) waveform.

Description

AG2410-PCT 1884.Q79WO1 PHASE-TRACKING REFERENCE SIGNAL (PT-RS) TRANSMISSION ON PUSCH WITH ORTHOGONAL COVER CODE (OCC) PRIORITY CLAIM

[0001] This application claims the benefit of priority to United States Provisional Patent Application Serial No.63 / 669,471, filed July10, 2024 [reference number AG2410-Z] which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments pertain to wireless communications. Some embodiments pertain to fifth generation (5G) New Radio (NR) systems. BACKGROUND

[0003] For a cellular system, coverage is an important factor for successful operation. Compared to a fourth generation (4G) Long-Term Evolution (LTE) system, a fifth generation (5G) New Radio (NR) system can be deployed at relatively higher carrier frequencies in frequency range 1 (FR1) (e.g., at 3.5GHz). Coverage, however, may be reduced due to larger path-loss which makes it more challenging to maintain an adequate quality of service. Typically, uplink coverage is the bottleneck for system operation considering the lower transmit power at the UE side. Moreover, the 5G NR cellular standards may be used for Non-Terrestrial Networks (NTN), where a UE is served via satellites or High-Altitude Platform Stations. Considering the significant distances between a satellite and a UE, additional coverage enhancements may be helpful for NTN deployment.

[0004] Given that the coverage of NTN satellites is very wide and considering device density, it is expected that a large number of UEs may beAG2410-PCT 1884.Q79WO1 within a satellite’s coverage. Especially for low-earth orbit (LEO) satellites, a large number of UEs must succeed in transmitting desired data during a satellite coverage period. In addition, some users will require higher resources than others, depending on their traffic patterns. Therefore, further granularity of resource multiplexing can significantly improve system capacity efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] FIG.1A illustrates an architecture of a network, in accordance with some embodiments.

[0006] FIG.1B and FIG.1C illustrate a non-roaming 5G system architecture in accordance with some embodiments.

[0007] FIG.2 illustrates procedure for phase-tracking reference signal (PT-RS) transmission when an orthogonal cover code (OCC) is applied for a physical uplink shared channel (PUSCH) transmission with a Discrete Fourier Transform-spread orthogonal frequency division multiplexed (DFT-S-OFDM) waveform, in accordance with some embodiments.

[0008] FIG.3 illustrates an example of a PT-RS pattern, in accordance with some embodiments.

[0009] FIG.4A illustrates an example of a Table 6.2.3.2-1: PT-RS group pattern as a function of scheduled bandwidth, in accordance with some embodiments.

[0010] FIG.4B illustrates another example of a Table 6.2.3.2-1: PT-RS group pattern as a function of scheduled bandwidth, in accordance with some embodiments.

[0011] FIG.5 illustrates a functional block diagram of a wireless communication device, in accordance with some embodiments. DETAILED DESCRIPTION

[0012] The following description and the drawings sufficiently illustrate specific embodiments to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and otherAG2410-PCT 1884.Q79WO1 changes. Portions and features of some embodiments may be included in, or substituted for, those of other embodiments. Embodiments set forth in the claims encompass all available equivalents of those claims.

[0013] Embodiments disclosed herein relate to a 5G NR network which may use cyclic prefix orthogonal frequency-division multiplexing (CP-OFDM)) for both the downlink (DL) and the uplink (UL). CP-OFDM may help reduce the effects of Intersymbol Interference (ISI) and enable simplified signal processing at the receiver. Additionally, Discrete Fourier Transform-spread-OFDM (DFT-s- OFDM) may be used for the UL. The DFT-s-OFDM waveform may be realized by enabling transform precoding at the transmitter side. In order to improve the capacity performance on uplink, Orthogonal Cover Codes (OCCs) may be applied for the transmission of physical uplink shared channel (PUSCH) with the DFT-s-OFDM waveform. In particular, an OCC may be applied on the PUSCH across OFDM symbols, across slots, and / or within an OFDM symbol. These embodiments, as well as others are described in more detail herein.

[0014] Some embodiments are directed to a User Equipment (UE) configured for operation in a new radio (NR) network. The UE may decode signalling (e.g., configuration information) to configure the UE for transmission of phase-tracking reference signals (PT-RS) for a PUSCH transmission with an orthogonal cover code (OCC). The UE may determine a PT-RS pattern based on a bandwidth for the PUSCH transmission and length of the OCC. The UE may also apply the OCC to one or more OFDM symbols of the PUSCH transmission, the PUSCH transmission comprising the PT-RS in accordance with the PT-RS pattern. The OCC may be applied either across OFDM symbols or within an OFDM symbol. The PUSCH transmission may comprise a Discrete Fourier Transform-spread orthogonal frequency division multiplexed (DFT-S-OFDM) waveform. These embodiments, as well as others are described in more detail herein.

[0015] FIG.1A illustrates an architecture of a network in accordance with some embodiments. The network 140A is shown to include user equipment (UE) 101 and UE 102. The UE 101 and UE 102 are illustrated as smartphones (e.g., handheld touchscreen mobile computing devices connectable to one or more cellular networks) but may also include any mobile or non-mobileAG2410-PCT 1884.Q79WO1 computing device, such as Personal Data Assistants (PDAs), pagers, laptop computers, desktop computers, wireless handsets, drones, or any other computing device including a wired and / or wireless communications interface. The UE 101 and UE 102 can be collectively referred to herein as UE 101, and UE 101 can be used to perform one or more of the techniques disclosed herein.

[0016] Any of the radio links described herein (e.g., as used in the network 140A or any other illustrated network) may operate according to any exemplary radio communication technology and / or standard.

[0017] LTE and LTE-Advanced are standards for wireless communications of high-speed data for UE such as mobile telephones. In LTE- Advanced and various wireless systems, carrier aggregation is a technology according to which multiple carrier signals operating on different frequencies may be used to carry communications for a single UE, thus increasing the bandwidth available to a single device. In some embodiments, carrier aggregation may be used where one or more component carriers operate on unlicensed frequencies.

[0018] Embodiments described herein can be used in the context of any spectrum management scheme including, for example, dedicated licensed spectrum, unlicensed spectrum, (licensed) shared spectrum (such as Licensed Shared Access (LSA) in 2.3-2.4 GHz, 3.4-3.6 GHz, 3.6-3.8 GHz, and further frequencies and Spectrum Access System (SAS) in 3.55-3.7 GHz and further frequencies).

[0019] Embodiments described herein can also be applied to different Single Carrier or OFDM flavors (CP-OFDM, SC-FDMA, SC-OFDM, filter bank-based multicarrier (FBMC), OFDMA, etc.) and in particular 3GPP NR (New Radio) by allocating the OFDM carrier data bit vectors to the corresponding symbol resources.

[0020] In some embodiments, any of the UE 101 and UE 102 can comprise an Internet-of-Things (IoT) UE or a Cellular IoT (CIoT) UE, which can comprise a network access layer designed for low-power IoT applications utilizing short-lived UE connections. In some embodiments, any of the UE 101 and UE 102 can include a narrowband (NB) IoT UE (e.g., such as an enhanced NB-IoT (eNB-IoT) UE and Further Enhanced (FeNB-IoT) UE). An IoT UE canAG2410-PCT 1884.Q79WO1 utilize technologies such as machine-to-machine (M2M) or machine-type communications (MTC) for exchanging data with an MTC server or device via a public land mobile network (PLMN), Proximity-Based Service (ProSe) or device-to-device (D2D) communication, sensor networks, or IoT networks. The M2M or MTC exchange of data may be a machine-initiated exchange of data. An IoT network includes interconnecting IoT UEs, which may include uniquely identifiable embedded computing devices (within the Internet infrastructure), with short-lived connections. The IoT UEs may execute background applications (e.g., keep-alive messages, status updates, etc.) to facilitate the connections of the IoT network. In some embodiments, any of the UE 101 and UE 102 can include enhanced MTC (eMTC) UEs or further enhanced MTC (FeMTC) UEs.

[0021] The UE 101 and UE 102 may be configured to connect, e.g., communicatively couple, with a radio access network (RAN) 110. The RAN 110 may be, for example, an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN), a NextGen RAN (NG RAN), or some other type of RAN. The UE 101 and UE 102 utilize connections 103 and 104, respectively, each of which comprises a physical communications interface or layer (discussed in further detail below); in this example, the connections 103 and 104 are illustrated as an air interface to enable communicative coupling and can be consistent with cellular communications protocols, such as a Global System for Mobile Communications (GSM) protocol, a code-division multiple access (CDMA) network protocol, a Push-to- Talk (PTT) protocol, a PTT over Cellular (POC) protocol, a Universal Mobile Telecommunications System (UMTS) protocol, a 3GPP Long Term Evolution (LTE) protocol, a fifth-generation (5G) protocol, a New Radio (NR) protocol, and the like.

[0022] In an aspect, the UE 101 and UE 102 may further directly exchange communication data via a ProSe interface 105. The ProSe interface 105 may alternatively be referred to as a sidelink interface comprising one or more logical channels, including but not limited to a Physical Sidelink Control Channel (PSCCH), a Physical Sidelink Shared Channel (PSSCH), a Physical Sidelink Discovery Channel (PSDCH), and a Physical Sidelink Broadcast Channel (PSBCH).AG2410-PCT 1884.Q79WO1

[0023] The UE 102 is shown to be configured to access an access point (AP) 106 via connection 107. The connection 107 can comprise a local wireless connection, such as, for example, a connection consistent with any IEEE 802.11 protocol, according to which the AP 106 can comprise a wireless fidelity (WiFi) router. In this example, the AP 106 is shown to be connected to the Internet without connecting to the core network of the wireless system (described in further detail below).

[0024] The RAN 110 can include one or more access nodes that enable the connections 103 and 104. These access nodes (ANs) can be referred to as base stations (BSs), NodeBs, evolved NodeBs (eNBs), Next Generation NodeBs (gNBs), RAN nodes, and the like, and can comprise ground stations (e.g., terrestrial access points) or satellite stations providing coverage within a geographic area (e.g., a cell). In some embodiments, the RAN nodes 111 and 112 can be transmission / reception points (TRPs). In instances when the RAN nodes 111 and 112 are NodeBs (e.g., eNBs or gNBs), one or more TRPs can function within the communication cell of the NodeBs. The RAN 110 may include one or more RAN nodes for providing macrocells, e.g., macro-RAN node, and one or more RAN nodes for providing femtocells or picocells (e.g., cells having smaller coverage areas, smaller user capacity, or higher bandwidth compared to macrocells), e.g., low power (LP) RAN node.

[0025] Any of the RAN nodes 111 and 112 can terminate the air interface protocol and can be the first point of contact for the UE 101 and UE 102. In some embodiments, any of the RAN nodes 111 and 112 can fulfill various logical functions for the RAN 110 including, but not limited to, radio network controller (RNC) functions such as radio bearer management, uplink and downlink dynamic radio resource management and data packet scheduling, and mobility management. In an example, any of the RAN nodes 111 and / or 112 can be a new generation Node-B (gNB), an evolved node-B (eNB), or another type of RAN node.

[0026] The RAN 110 is shown to be communicatively coupled to a core network (CN) 120 via an S1 interface 113. In embodiments, the CN 120 may be an evolved packet core (EPC) network, a NextGen Packet Core (NPC) network, or some other type of CN (e.g., as illustrated in reference to FIGS.1B-1C). InAG2410-PCT 1884.Q79WO1 this aspect, the S1 interface 113 is split into two parts: the S1-U interface 114, which carries traffic data between the RAN nodes 111 and 112 and the serving gateway (S-GW) 122, and the S1-mobility management entity (MME) interface 115, which is a signaling interface between the RAN nodes 111 and 112 and MMEs 121.

[0027] In this aspect, the CN 120 comprises the MMEs 121, the S-GW 122, the Packet Data Network (PDN) Gateway (P-GW) 123, and a home subscriber server (HSS) 124. The MMEs 121 may be similar in function to the control plane of legacy Serving General Packet Radio Service (GPRS) Support Nodes (SGSN). The MMEs 121 may manage mobility embodiments in access such as gateway selection and tracking area list management. The HSS 124 may comprise a database for network users, including subscription-related information to support the network entities' handling of communication sessions. The CN 120 may comprise one or several HSSs 124, depending on the number of mobile subscribers, on the capacity of the equipment, on the organization of the network, etc. For example, the HSS 124 can provide support for routing / roaming, authentication, authorization, naming / addressing resolution, location dependencies, etc.

[0028] The S-GW 122 may terminate the S1 interface 113 towards the RAN 110, and routes data packets between the RAN 110 and the CN 120. In addition, the S-GW 122 may be a local mobility anchor point for inter-RAN node handovers and also may provide an anchor for inter-3GPP mobility. Other responsibilities of the S-GW 122 may include a lawful intercept, charging, and some policy enforcement.

[0029] The P-GW 123 may terminate an SGi interface toward a PDN. The P-GW 123 may route data packets between the CN 120 and external networks such as a network including the application server 184 (alternatively referred to as application function (AF)) via an Internet Protocol (IP) interface 125. The P-GW 123 can also communicate data to other external networks 131A, which can include the Internet, IP multimedia subsystem (IPS) network, and other networks. Generally, the application server 184 may be an element offering applications that use IP bearer resources with the core network (e.g., UMTS Packet Services (PS) domain, LTE PS data services, etc.). In this aspect,AG2410-PCT 1884.Q79WO1 the P-GW 123 is shown to be communicatively coupled to an application server 184 via an IP interface 125. The application server 184 can also be configured to support one or more communication services (e.g., Voice-over-Internet Protocol (VoIP) sessions, PTT sessions, group communication sessions, social networking services, etc.) for the UE 101 and UE 102 via the CN 120.

[0030] The P-GW 123 may further be a node for policy enforcement and charging data collection. Policy and Charging Rules Function (PCRF) 126 is the policy and charging control element of the CN 120. In a non-roaming scenario, in some embodiments, there may be a single PCRF in the Home Public Land Mobile Network (HPLMN) associated with a UE's Internet Protocol Connectivity Access Network (IP-CAN) session. In a roaming scenario with a local breakout of traffic, there may be two PCRFs associated with a UE's IP- CAN session: a Home PCRF (H-PCRF) within an HPLMN and a Visited PCRF (V-PCRF) within a Visited Public Land Mobile Network (VPLMN). The PCRF 126 may be communicatively coupled to the application server 184 via the P- GW 123.

[0031] In some embodiments, the communication network 140A can be an IoT network or a 5G network, including 5G new radio network using communications in the licensed (5G NR) and the unlicensed (5G NR-U) spectrum. One of the current enablers of IoT is the narrowband-IoT (NB-IoT).

[0032] An NG system architecture can include the RAN 110 and a 5G network core (5GC). In these embodiments, the RAN 110 can include a plurality of nodes, such as gNBs and NG-eNBs. The CN 120 (e.g., a 5G core network or 5GC) can include an access and mobility function (AMF) and / or a user plane function (UPF). The AMF and the UPF can be communicatively coupled to the gNBs and the NG-eNBs via NG interfaces. More specifically, in some embodiments, the gNBs and the NG-eNBs can be connected to the AMF by NG- C interfaces, and to the UPF by NG-U interfaces. The gNBs and the NG-eNBs can be coupled to each other via Xn interfaces.

[0033] In some embodiments, the NG system architecture can use reference points between various nodes as provided by 3GPP Technical Specification (TS) 23.501 (e.g., V15.4.0, 2018-12). In some embodiments, each of the gNBs and the NG-eNBs can be implemented as a base station, a mobileAG2410-PCT 1884.Q79WO1 edge server, a small cell, a home eNB, and so forth. In some embodiments, a gNB can be a master node (MN) and NG-eNB can be a secondary node (SN) in a 5G architecture.

[0034] FIG.1B illustrates a non-roaming 5G system architecture in accordance with some embodiments. Referring to FIG.1B, there is illustrated a 5G system architecture 140B in a reference point representation. More specifically, UE 102 can be in communication with RAN 110 as well as one or more other 5G core (5GC) network entities. The 5G system architecture 140B includes a plurality of network functions (NFs), such as access and mobility management function (AMF) 132, session management function (SMF) 136, policy control function (PCF) 148, application function (AF) 150, user plane function (UPF) 134, network slice selection function (NSSF) 142, authentication server function (AUSF) 144, and unified data management (UDM) / home subscriber server (HSS) 146. The UPF 134 can provide a connection to a data network (DN) 152, which can include, for example, operator services, Internet access, or third-party services. The AMF 132 can be used to manage access control and mobility and can also include network slice selection functionality. The SMF 136 can be configured to set up and manage various sessions according to network policy. The UPF 134 can be deployed in one or more configurations according to the desired service type. The PCF 148 can be configured to provide a policy framework using network slicing, mobility management, and roaming (similar to PCRF in a 4G communication system). The UDM can be configured to store subscriber profiles and data (similar to an HSS in a 4G communication system).

[0035] In some embodiments, the 5G system architecture 140B includes an IP multimedia subsystem (IMS) 168B as well as a plurality of IP multimedia core network subsystem entities, such as call session control functions (CSCFs). More specifically, the IMS 168B includes a CSCF, which can act as a proxy CSCF (P-CSCF) 162B, a serving CSCF (S-CSCF) 164B, an emergency CSCF (E-CSCF) (not illustrated in FIG.1B), or interrogating CSCF (I-CSCF) 166B. The P-CSCF 162B can be configured to be the first contact point for the UE 102 within the IM subsystem (IMS) 168B. The S-CSCF 164B can be configured to handle the session states in the network, and the E-CSCF can be configured toAG2410-PCT 1884.Q79WO1 handle certain embodiments of emergency sessions such as routing an emergency request to the correct emergency center or PSAP. The I-CSCF 166B can be configured to function as the contact point within an operator's network for all IMS connections destined to a subscriber of that network operator, or a roaming subscriber currently located within that network operator's service area. In some embodiments, the I-CSCF 166B can be connected to another IP multimedia network 170E, e.g. an IMS operated by a different network operator.

[0036] In some embodiments, the UDM / HSS 146 can be coupled to an application server 160E, which can include a telephony application server (TAS) or another application server (AS). The AS 160B can be coupled to the IMS 168B via the S-CSCF 164B or the I-CSCF 166B.

[0037] A reference point representation shows that interaction can exist between corresponding NF services. For example, FIG.1B illustrates the following reference points: N1 (between the UE 102 and the AMF 132), N2 (between the RAN 110 and the AMF 132), N3 (between the RAN 110 and the UPF 134), N4 (between the SMF 136 and the UPF 134), N5 (between the PCF 148 and the AF 150, not shown), N6 (between the UPF 134 and the DN 152), N7 (between the SMF 136 and the PCF 148, not shown), N8 (between the UDM / HSS 146 and the AMF 132, not shown), N9 (between two UPFs 134, not shown), N10 (between the UDM / HSS 146 and the SMF 136, not shown), N11 (between the AMF 132 and the SMF 136, not shown), N12 (between the AUSF 144 and the AMF 132, not shown), N13 (between the AUSF 144 and the UDM / HSS 146, not shown), N14 (between two AMFs 132, not shown), N15 (between the PCF 148 and the AMF 132 in case of a non-roaming scenario, or between the PCF 148 and a visited network and AMF 132 in case of a roaming scenario, not shown), N16 (between two SMFs, not shown), and N22 (between AMF 132 and NSSF 142, not shown). Other reference point representations not shown in FIG.1B can also be used.

[0038] FIG.1C illustrates a 5G system architecture 140C and a service- based representation. In addition to the network entities illustrated in FIG.1B, system architecture 140C can also include a network exposure function (NEF) 154 and a network repository function (NRF) 156. In some embodiments, 5G system architectures can be service-based and interaction between networkAG2410-PCT 1884.Q79WO1 functions can be represented by corresponding point-to-point reference points Ni or as service-based interfaces.

[0039] In some embodiments, as illustrated in FIG.1C, service-based representations can be used to represent network functions within the control plane that enable other authorized network functions to access their services. In this regard, 5G system architecture 140C can include the following service-based interfaces: Namf 158H (a service-based interface exhibited by the AMF 132), Nsmf 158I (a service-based interface exhibited by the SMF 136), Nnef 158B (a service-based interface exhibited by the NEF 154), Npcf 158D (a service-based interface exhibited by the PCF 148), a Nudm 158E (a service-based interface exhibited by the UDM / HSS 146), Naf 158F (a service-based interface exhibited by the AF 150), Nnrf 158C (a service-based interface exhibited by the NRF 156), Nnssf 158A (a service-based interface exhibited by the NSSF 142), Nausf 158G (a service-based interface exhibited by the AUSF 144). Other service- based interfaces (e.g., Nudr, N5g-eir, and Nudsf) not shown in FIG.1C can also be used.

[0040] In some embodiments, any of the UEs or base stations described in connection with FIGS.1A-1C can be configured to perform the functionalities described herein.

[0041] Mobile communication has evolved significantly from early voice systems to today’s highly sophisticated integrated communication platform. The next generation wireless communication system, 5G, or new radio (NR) will provide access to information and sharing of data anywhere, anytime by various users and applications. NR is expected to be a unified network / system that targets to meet vastly different and sometimes conflicting performance dimensions and services. Such diverse multi-dimensional requirements are driven by different services and applications. In general, NR will evolve based on 3GPP LTE-Advanced with additional potential new Radio Access Technologies (RATs) to enrich people's lives with better, simple, and seamless wireless connectivity solutions. NR will enable everything connected by wireless and deliver fast, rich content and services.

[0042] Rel-15 NR systems are designed to operate on the licensed spectrum. The NR-unlicensed (NR-U), a short-hand notation of the NR-basedAG2410-PCT 1884.Q79WO1 access to unlicensed spectrum, is a technology that enables the operation of NR systems on the unlicensed spectrum.

[0043] In some embodiments, various phase tracking reference signal (PT-RS) patterns may be used. For PT-RS patterns associated with a PUSCH transmission using DFT-s-OFDM waveform, a PT-RS may be inserted in the data prior to the DFT operation. Further, a group-based PT-RS pattern may be employed for the DFT-s-OFDM waveform. In this case, multiple groups of PT- RS samples may be distributed within a symbol, where each group may have 2 or 4 samples for PT-RS. Further, the selection of the PT-RS pattern may be determined based on the allocated bandwidth or the number of physical resource blocks (PRBs) for PUSCH transmission.

[0044] In some embodiments, when an OCC is applied within an OFDM symbol and / or across OFDM symbols for PUSCH transmission, the amount of resource allocated for actual data transmission may be decreased based on the spreading factor of the OCC. In this case, the PT-RS pattern determination may need to be considered for a PUSCH transmission with DFT-s-OFDM waveform.

[0045] The orthogonal cover codes may create orthogonality in the time domain by applying different spreading sequences across multiple OFDM symbols within a slot. Some OCC lengths in 5G include: • Length 2: [+1, +1] and [+1, -1] • Length 4: [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, -1, -1], [+1, - 1, -1, +1]

[0046] Some embodiments may apply symbol-level spreading in which the same modulated symbol is repeated across multiple OFDM symbols. Some embodiments may use OCC multiplication in which each repetition is multiplied by the corresponding element of the assigned OCC sequence. Some embodiments may apply frequency domain mapping in which the OCC-spread symbols are mapped to the allocated frequency resources.

[0047] In some embodiments, DFT-s-OFDM may be used in an uplink to address the power efficiency challenges that mobile devices face when transmitting data because DFT-s-OFDM may reduce Peak-to-Average Power Ratio (PAPR). Regular OFDM has a higher PAPR because multiple subcarriers can constructively interfere, creating signal peaks that require linearAG2410-PCT 1884.Q79WO1 amplification across a wide dynamic range. This forces power amplifiers in mobile devices to operate with significant backoff from their peak efficiency point to avoid distortion. DFT-s-OFDM helps by spreading the data in the frequency domain before OFDM modulation. The DFT precoding step transforms the signal so that it has single-carrier characteristics in the time domain, dramatically reducing PAPR. This allows the power amplifier to operate closer to saturation, improving power efficiency by several dB.

[0048] Some embodiments disclosed herein relate to PT-RS transmission and UCI multiplexing on PUSCH for capacity improvement. Some embodiments provide for PT-RS pattern determination for a PUSCH transmission with capacity improvement. Some embodiments provide for TBS determination for a PUSCH transmission with capacity improvement. Some embodiments provide for UCI multiplexing on a PUSCH transmission with capacity improvement.

[0049] PT-RS pattern determination for PUSCH with capacity improvement

[0050] As mentioned above, when an OCC is applied within an OFDM symbol and / or across OFDM symbols for a PUSCH transmission, the amount of resource allocated for actual data transmission may be decreased based on the spreading factor of the OCC. Thus, the PT-RS pattern determination may need to be considered for a PUSCH transmission with DFT-s-OFDM waveform. Embodiments of PT-RS pattern determination for PUSCH with capacity improvement are provided as follows:

[0051] In some embodiments, when an OCC is applied for PUSCH transmission with a DFT-s-OFDM waveform across OFDM symbols or within a symbol, the OCC is applied after PT-RS insertion in the allocated PUSCH transmission.

[0052] In some embodiments, the OCC may be applied for the PUSCH signal generation in the time domain prior to DFT operation. In one example, this may be for the case when the OCC is applied for the PUSCH transmission with DFT-s-OFDM waveform within a symbol.

[0053] In some embodiments, the OCC may be applied for PUSCH signal generation in the frequency domain after DFT operation and resourceAG2410-PCT 1884.Q79WO1 allocation. In one example, this may be for the case when the OCC is applied for the PUSCH transmission with DFT-s-OFDM waveform across symbols.

[0054] In some embodiments, when an OCC is applied for a PUSCH transmission with DFT-s-OFDM waveform across OFDM symbols or within a symbol, the PT-RS pattern for the corresponding PUSCH transmission may be determined in accordance with the scheduled bandwidth and the spreading factor used for the OCC or the OCC length.

[0055] FIG.2 illustrates procedure for PT-RS transmission when an OCC is applied for a PUSCH transmission with a DFT-s-OFDM waveform, in accordance with some embodiments.

[0056] In operation 202, the UE may determine that orthogonal cover code (OCC) is to be applied for PUSCH transmission with DFT-s-OFDM waveform. In some embodiments, UE may receive RRC configuration and / or dynamic indication in the DCI format to determine that OCC is applied for PUSCH transmission with DFT-s-OFDM waveform.

[0057] In operation 204, the UE may determine a PT-RS pattern in accordance with the spreading factor of the OCC and the number of PRBs for PUSCH transmission. The spreading factor of the length of OCC, and the number of PRBs for PUSCH transmission may be configured by RRC configuration and / or dynamic indication in the DCI format.

[0058] In operation 206, the UE may transmit the PT-RS in accordance with the determined PT-RS pattern.AG2410-PCT 1884.Q79WO1

[0059] FIG.3 illustrates an example of a PT-RS pattern, in accordance with some embodiments. In some embodiments, the PT-RS pattern may be determined when the OCC is applied for PUSCH transmission with DFT-s- OFDM waveform across symbols or within a symbol. In these embodiments, when transform precoding is enabled and if a UE is configured with the higher layer parameter transformPrecoderEnabled in PTRS-UplinkConfig, - the UE shall be configured with the higher layer parameters sampleDensity and the UE shall assume the PT-RS antenna ports' presence and PT-RS group pattern are a function of the corresponding scheduled bandwidth in a corresponding bandwidth part, as shown in Table 6.2.3.2-1. The UE shall assume no PT-RS is present when the number of scheduled RBs is less than NRB0if NRB0> 1 or if the RNTI equals TC-RNTI. - and the UE may be configured PT-RS time density LPT-RS= 2 with the higher layer parameter timeDensityTransformPrecoding. Otherwise, the UE shall assume LPT-RS= 1. - if the higher layer parameter sampleDensity indicates that the sample density thresholds NRB,i= NRB,i+1, then the associated row where both these thresholds appear in Table 6.2.3.2-1 is disabled. - if the UE is configured OCC length ^^^^^^^^^^^^^^^^for PUSCH transmissions withOCC across symbols or within a symbol; otherwise ^^^^^^^^^^^^^^^^ = 1;

[0060] FIG.4A illustrates an example of a Table 6.2.3.2-1: PT-RS group pattern as a function of scheduled bandwidth, in accordance with some embodiments.

[0061] In some embodiments, the PT-RS pattern may be determined when the OCC is applied for PUSCH transmission with DFT-s-OFDM waveform across symbols or within a symbol. In these embodiments, when transform precoding is enabled and if a UE is configured with the higher layer parameter transformPrecoderEnabled in PTRS-UplinkConfig, - the UE shall be configured with the higher layer parameters sampleDensity and the UE shall assume the PT-RS antenna ports' presence and PT-RS group pattern are a function of the corresponding scheduled bandwidth in a corresponding bandwidth part, as shown in Table 6.2.3.2-1. The UE shallAG2410-PCT 1884.Q79WO1 assume no PT-RS is present when the number of scheduled RBs is less than NRB0if NRB0> 1 or if the RNTI equals TC-RNTI. - and the UE may be configured PT-RS time density LPT-RS= 2 with the higher layer parameter timeDensityTransformPrecoding. Otherwise, the UE shall assume LPT-RS= 1. - if the higher layer parameter sampleDensity indicates that the sample density thresholds NRB,i= NRB,i+1, then the associated row where both these thresholds appear in Table 6.2.3.2-1 is disabled. - if the UE is configured OCC length ^^^^^^^^^^^^^^^^for PUSCH transmissions withOCC across symbols or within a symbol; otherwise ^^^^^^^^^^^^^^^^ = 1;

[0062] FIG.4B illustrates another example of a Table 6.2.3.2-1: PT-RS group pattern as a function of scheduled bandwidth, in accordance with some embodiments.

[0063] TBS determination for PUSCH with capacity improvement

[0064] Embodiments of transport block size (TBS) determination for PUSCH with capacity improvement are provided as follows:

[0065] In some embodiments, when an OCC is applied for a PUSCH transmission across OFDM symbols, or within a symbol, the TBS may be determined in accordance with allocated bandwidth, the number of symbols for PUSCH transmission, demodulation reference signal (DMRS) overhead, modulation and coding scheme (MCS) and / or spreading factor used for OCC or the OCC length.

[0066] In some embodiments, the TBS may be determined when the OCC is applied for PUSCH transmission with DFT-s-OFDM waveform across symbols or within a symbol. In these embodiments, a UE may determine thetotal number of REs allocated for PUSCH(^^^^^^^^^^^^)as follows- For TB processing over multiple slots, ^^^^^^^^^^^^ = ^^^^ ∗ ^^^^^^^^^^^^(156,^^^^′^^^^^^^^ ) ⋅ ^^^^^^^^^^^^^^^^where ^^^^^^^^^^^^^^^^is the total number of allocated PRBs for the UE and N is the number of slots used for TBS determination indicated by numberOfSlotsTBoMS. - If the UE is configured with OCC across symbols or within a symbol,^^^^^^^^^^^^ = ^^^^^^^^^^^^(^^^^^^^^^^^^,^^^^′^^^^^^^^ ) ⋅ ^^^^^^^^^^^^^^^^ / ^^^^^^^^^^^^^^^^, where ^^^^^^^^^^^^^^^^ is the OCC length.- Otherwise, ^^^^^^^^^^^^ = ^^^^^^^^^^^^(^^^^^^^^^^^^,^^^^′^^^^^^^^ ) ⋅ ^^^^^^^^^^^^^^^^.AG2410-PCT 1884.Q79WO1

[0067] For a PUSCH scheduled by fallbackRAR UL grant, UE assumes the TB size determined by the UL grant in the fallbackRAR shall be the same as the TB size used in the corresponding MsgA PUSCH transmission. In some other embodiments, the OCC may also apply for the PUSCH with transport block over multiple slot (TBoMS). Transport Block over Multiple Slots (TBoMS) is a 5G NR feature that allows a single transport block to be transmitted across multiple consecutive slots, rather than being confined to a single slot. In these embodiments, when the OCC is applied within a symbol, or across OFDM symbols for TBoMS transmission, the TBS may be determined in accordance with allocated bandwidth, the number of symbols in each slot and the number of slots for TBoMS transmission, DMRS overhead and spreading factor used for the OCC on the TBoMS transmission or the OCC length.

[0068] In some embodiments, the TBS may be determined when the OCC is applied for TBoMS transmission with DFT-s-OFDM waveform across symbols or within a symbol. In these embodiments, a UE may determine the total number of REs allocated for PUSCH (^^^^^^^^^^^^) as follows:- For TB processing over multiple slots, ^^^^^^^^^^^^ = ^^^^ ∗ ^^^^^^^^^^^^(^^^^^^^^^^^^,^^^^′^^^^^^^^ ) ⋅^^^^^^^^^^^^^^^^where ^^^^^^^^^^^^^^^^is the total number of allocated PRBs for the UE and N is the number of slots used for TBS determination indicated by numberOfSlotsTBoMS. If the UE is configured with OCC across symbols or within a symbol for TBprocessing over multiple slots, ^^^^^^^^^^^^ = ^^^^ ∗ ^^^^^^^^^^^^(^^^^^^^^^^^^,^^^^′^^^^^^^^ ) ⋅ ^^^^^^^^^^^^^^^^ / ^^^^^^^^^^^^^^^^, where^^^^^^^^^^^^^^^^is the OCC length.- Otherwise, ^^^^^^^^^^^^ = ^^^^^^^^^^^^(^^^^^^^^^^^^,^^^^′^^^^^^^^ ) ⋅ ^^^^^^^^^^^^^^^^.For a PUSCH scheduled by fallbackRAR UL grant, UE assumes the TB size determined by the UL grant in the fallbackRAR shall be the same as the TB size used in the corresponding MsgA PUSCH transmission.

[0069] Some embodiments are directed to UCI multiplexing on PUSCH with capacity improvement. Embodiments of uplink control information (UCI) multiplexing on PUSCH with capacity improvement are provided as follows:

[0070] In some embodiments, when an OCC is applied for PUSCH transmission across OFDM symbols, or within a symbol, the amount of resources determined for a UCI transmission may be determined in accordanceAG2410-PCT 1884.Q79WO1 with the number of bits for UCI and data, the beta offset, the amount of the resource allocated for the PUSCH transmission, and the spreading factor used for OCC or the OCC length. In some embodiments, the UCI may include at least one or more of a hybrid automatic repeat request acknowledgment (HARQ- ACK), channel state information (CSI) part 1, CSI part 2, CG-UCI, HARQ-ACK and CG-UCI, UTO-UCI.

[0071] In some embodiments, the amount of HARQ-ACK resources on PUSCH with UL-SCH when the OCC is applied may be determined for a PUSCH transmission with DFT-s-OFDM waveform across symbols or within a symbol. In these embodiments, for a HARQ-ACK transmission on the PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as ^^^^′ACK, is determined as follows:

[0072] ^^^^′ACK=

[0073] where: - ^^^^ACKis the number of HARQ-ACK bits;- if ^^^^ACK ≥ ^^^^^^^^^^^^, ^^^^ACK = ^^^^^^^^; otherwise ^^^^ACK is the number of CRC bitsfor HARQ-ACK may be determined;- ^^^^PUSCH = ^HARQ−ACKoffset ^^^offset; - ^^^^UL−SCHis the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the ^^^^ -th code block, ^^^^^^^^=0; otherwise, ^^^^^^^^is the ^^^^ -th code block size for UL-SCH of the PUSCH transmission; - ^^^^PscUSCHis the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers;AG2410-PCT 1884.Q79WO1 - ^^^^PscT-RS(^^^^)is the number of subcarriers in OFDM symbol ^^^^ that carries PTRS, in the PUSCH transmission; - ^^^^^^^^^^^^^^^^is the OCC length when the OCC is applied for the PUSCH transmission across symbols or within a symbol; - ^^^^UscCI(^^^^)is the number of resource elements that can be used fortransmission of UCI in OFDM symbol ^^^^, for ^^^^ = ^^^^,^^^^,^^^^, ...− ^^^^, in thePUSCH transmission and ^^^^PsyUmSbC,aHllis the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS;- for any OFDM symbol that carries DMRS of the PUSCH, ^^^^UCIsc (^^^^) = ^^^^;- for any OFDM symbol that does not carry DMRS of the PUSCH,^^^^UCIsc (^^^^) = ^^^^PUSCHsc − ^^^^PT-RSsc (^^^^);- ^^^^ is configured by higher layer parameter scaling; - ^^^^^^^^is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol(s), in the PUSCH transmission.

[0074] In some embodiments, the amount of HARQ-ACK resource on PUSCH without UL-SCH when the OCC is applied may be determined for a PUSCH transmission with DFT-s-OFDM waveform across symbols or within a symbol. In these embodiments, for a HARQ-ACK transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as ^^^^′ACK, is determined as follows:

[0076] where - ^^^^ACKis the number of HARQ-ACK bits;- if ^^^^ACK ≥ ^^^^^^^^^^^^, ^^^^ACK = ^^^^^^^^; otherwise ^^^^ACK is the number of CRC bitsfor HARQ-ACK defined;- ^^^^PUSCHHARQ−ACKoffset = ^^^^offset; - ^^^^PscUSCHis the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers;AG2410-PCT 1884.Q79WO1 - ^^^^PscT-RS(^^^^)is the number of subcarriers in OFDM symbol ^^^^ that carries PTRS, in the PUSCH transmission;- ^^^^UscCI(^^^^)is the number of resource elements that can be used fortransmission of UCI in OFDM symbol ^^^^, for ^^^^ =− ^^^^, in thePUSCH transmission and ^^^^PsyUmSbC,aHllis the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS;- for any OFDM symbol that carries DMRS of the PUSCH, ^^^^UCIsc (^^^^) = ^^^^;- for any OFDM symbol that does not carry DMRS of the PUSCH,- ^^^^^^^^is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol(s), in the PUSCH transmission; - ^^^^^^^^^^^^^^^^is the OCC length when the OCC is applied for the PUSCH transmission across symbols or within a symbol; - ^^^^ is the code rate of the PUSCH, determined; - ^^^^^^^^is the modulation order of the PUSCH; - ^^^^ is configured by higher layer parameter scaling.

[0077] In some embodiments, the amount of HARQ-ACK resources on TBoMS with UL-SCH when the OCC is applied may be determined for a PUSCH transmission with DFT-s-OFDM waveform across symbols or within a symbol. In these embodiments, for HARQ-ACK transmission on the PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as ^^^^′^^^^^^^^^^^^, is determined as follows:

[0079] whereAG2410-PCT 1884.Q79WO1 - ^^^^^^^^is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - ^^^^^^^^^^^^^^^^^^^^−^^^^^^^^(^^^^) is the number of subcarriers in OFDM symbol ^^^^ that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission; - ^^^^^^^^^^^^^^^^^^^^^^^^(^^^^) is the number of resource elements that can be used fortransmission of UCI in OFDM symbol ^^^^, for− ^^^^, in thePUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission andis the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - ^^^^^^^^^^^^^^^^is the OCC length when the OCC is applied for the PUSCH transmission across symbols or within a symbol; - ^^^^^^^^is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol(s), in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ- ACK transmission; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.

[0080] In some embodiments, the amount of HARQ-ACK resource on PUSCH using repetition type B with UL-SCH when the OCC is applied may be determined for a PUSCH transmission with DFT-s-OFDM waveform across symbols or within a symbol. In these embodiments, for a HARQ-ACK transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as ^^^^′^^^^^^^^^^^^, is determined as follows:

[0081] ^^^^′^^^^^^^^^^^^=AG2410-PCT 1884.Q79WO1

[0082] where- ^^^^sUcC,nIominal(^^^^)is the number of resource elements that can be used fortransmission of UCI in OFDM symbol ^^^^, for ^^^^ = 0, 1, 2,⋯ ,^^^^PUSCHsymb,nominal − 1, inthe PUSCH transmission assuming a nominal repetition without segmentation, and ^^^^sPyUmSbC,nHominalis the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming anominal repetition without segmentation, ^^^^UCIsc,nominal (^^^^) = 0;- for any OFDM symbol that does not carry DMRS of the PUSCHassuming a nominal repetition without segmentation, PUSCH= ^^^^sc −is the number of subcarriers in OFDM symbol ^^^^ that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - ^^^^sUcC,aIctual(^^^^) is the number of resource elements that can be used fortransmission of UCI in OFDM symbol ^^^^ , for ^^^^ = 0, 1, 2,⋯ ,^^^^PUSCHsymb,actual − 1, inthe actual repetition of the PUSCH transmission, and ^^^^sPyUmSbC,aHctualis the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of thePUSCH transmission, ^^^^UCIsc,actual (^^^^) = 0;- for any OFDM symbol that does not carry DMRS of the actual repetitionof the PUSCH transmission,^^^^PT-RSsc,actual(^^^^)is the number of subcarriers in OFDM symbol ^^^^ that carries PTRS, in the actual repetition of the PUSCH transmission; - ^^^^OCCis the OCC length when the OCC is applied for the PUSCH transmission across symbols or within a symbol; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.AG2410-PCT 1884.Q79WO1

[0083] In some embodiments, the above examples for HARQ-ACK transmission may be extended to the other UCI types, including CSI part 1, CSI part 2, CG-UCI, HARQ-ACK and CG-UCI, UTO-UCI.

[0084] In accordance with some embodiments, a User Equipment (UE) configured for operation in a new radio (NR) network may decode signalling (e.g., configuration information) to configure the UE for transmission of phase- tracking reference signals (PT-RS) for a PUSCH transmission with an orthogonal cover code (OCC). The UE may determine a PT-RS pattern based on a bandwidth for the PUSCH transmission and length of the OCC. The UE may also apply the OCC to one or more OFDM symbols of the PUSCH transmission, the PUSCH transmission comprising the PT-RS in accordance with the PT-RS pattern. The OCC may be applied either across OFDM symbols or within an OFDM symbol. The PUSCH transmission may comprise a Discrete Fourier Transform-spread orthogonal frequency division multiplexed (DFT-S-OFDM) waveform. These embodiments, as well as others are described in more detail herein.

[0085] In some embodiments, the OCC may be applied after insertion of the PT-RS in resources allocated for the PUSCH transmission. In some embodiments, the PT-RS may be inserted in data prior to a DFT operation. In some embodiments, the UE may determine the PT-RS pattern based on a number of resource blocks (NRB) allocated for the PUSCH transmission and the length of OCC.

[0086] In some embodiments, when transform precoding is enabled, and when the OCC is applied within an OFDM symbol, the UE may be configured to distribute a number of PT-RS groups of PT-RS samples within the OFDM symbol. In these embodiments, the number of PT-RS groups of PT-RS samples and a number of samples per PT-RS group may be based on the number of resource blocks (NRB) allocated and the length of OCC. In these embodiments, each PT-RS group may have either 2 or 4 PT-RS samples. An example of a PT- RS pattern is illustrated in FIG.3, in which a number of PT-RS samples are distributed among PT-RS groups within an OFDM symbol. For example:AG2410-PCT 1884.Q79WO1

[0087] OFDM symbol 302 includes two PT-RS groups with two PT-RS samples per group (2, 2),

[0088] OFDM symbol 304 includes two PT-RS groups with four PT-RS samples per group (2, 4),

[0089] OFDM symbol 306 includes four PT-RS groups with two PT-RS samples per group (4, 2),

[0090] OFDM symbol 308 includes four PT-RS groups with four PT-RS samples per group (4, 4),

[0091] OFDM symbol 310 includes eight PT-RS groups with four PT- RS samples per group (8, 4).

[0092] In some embodiments, when transform precoding is enabled and when the UE is configured with an OCC of length (LOCC) (OCC length) for the PUSCH transmission, the UE may be configured to divide the number of resource blocks (NRB) allocated by the OCC length (LOCC) (i.e., NRB / LOCC) to determine the number of PT-RS groups of PT-RS samples and the number of samples per PT-RS group. An example of this is illustrated in FIG.4A which illustrates an example of a Table 6.2.3.2-1: PT-RS group pattern as a function of scheduled bandwidth.

[0093] In some embodiments, when transform precoding is enabled and when the UE is configured with an OCC of length (LOCC) (OCC length) for the PUSCH transmission, the UE may be configured to multiply the OCC length by one or more configured resource block ranges (e.g., NRB0, NRB1, NRB2, NRB3, NRB4) to determine the number of PT-RS groups of PT-RS samples and the number of samples per PT-RS group for the PT-RS transmission. An example of this is illustrated in FIG.4B which illustrates an example of a Table 6.2.3.2-1: PT-RS group pattern as a function of scheduled bandwidth.

[0094] In some embodiments, when the UE is not configured with an OCC for the PUSCH transmission, the UE may be configured to: set OCC length (LOCC) to one (LOCC=1) and the divide the number of resource blocks (NRB) allocated by the OCC length (LOCC) to determine the number of PT-RS groups of PT-RS samples and the number of samples per PT-RS group; or determine the number of PT-RS groups of PT-RS samples and the number of samples per PT-AG2410-PCT 1884.Q79WO1 RS group based on the number of resource blocks (NRB) allocated without use an OCC length (LOCC).

[0095] In some embodiments, after distributing the number of PT-RS groups of PT-RS samples within the OFDM symbol, the UE configures the UE to perform the transform precoding (i.e., on coded modulated symbols) after application of the OCC to generate the DFT-S-OFDM waveform for the PUSCH transmission.

[0096] In some embodiments, when the OCC is applied for the PUSCH transmission, for transport block (TB) processing over multiple slots, the UE may be further be configured to determine a number of resource elements (REs) allocated for the PUSCH transmission (NRE) as follows:

[0097] length ofOCC, where ^^^^^^^^^^^^^^^^is the total number of allocated PRBs for the UE and N is the number of slots used for TB size (TBS) determination, and where N’REis a number of REs allocated for the PUSCH transmission within a PRB.

[0098] In some embodiments, when the OCC is applied for the PUSCH transmission that includes an HARQ-ACK, the UE may be configured to determine a number of coded modulation symbols per layer for HARQ-ACK transmission (i.e., ^^^^AʹCK) by dividing a number of resource elements that can be used for transmission of uplink configuration information (UCI) in an OFDM symbol by a length of the OCC (e.g., (nPRB / LOCC).

[0099] In some embodiments, when the PUSCH transmission is being transmitted to a node (e.g., satellite) of a non-terrestrial network (NTN), the UE may be configured to apply the OCC to the OFDM symbols of the PUSCH transmission; and

[0100] In these embodiments, when the PUSCH transmission is being transmitted to a ground-based node (e.g., gNB) of a terrestrial network, the UE may be configured to refrain from applying the OCC to the OFDM symbols of the PUSCH transmission.

[0101] Some embodiments are directed to a non-transitory] computer- readable storage medium that stores instructions for execution by processing circuitry of a User Equipment (UE) configured for operation in a new radio (NR) network.AG2410-PCT 1884.Q79WO1

[0102] Some embodiments are directed to a generation node B (gNB) configured for operation in a new radio (NR) network. In these embodiments, the gNB may encode signalling for transmission to a User Equipment (UE) to configure the UE for transmission of phase-tracking reference signals (PT-RS) for a physical uplink shared channel (PUSCH) transmission with an orthogonal cover code (OCC). The gNB may also decode the PUSCH transmission received from the UE. The PUSCH transmission may comprise a Discrete Fourier Transform-spread orthogonal frequency division multiplexed (DFT-S-OFDM) waveform. In these embodiments, the PT-RS pattern may be based on a bandwidth for the PUSCH transmission and length of the OCC. In these embodiments, the OCC may be applied to one or more OFDM symbols of the PUSCH transmission, the PUSCH transmission comprising the PT-RS in accordance with the PT-RS pattern.

[0103] In some embodiments, the PT-RS pattern may be based on a number of resource blocks (NRB) allocated for the PUSCH transmission and the length of OCC.

[0104] In some embodiments, when transform precoding is enabled, and when the OCC is applied within an OFDM symbol, the number of PT-RS groups of PT-RS samples may be distributed within the OFDM symbol. In these embodiments, the number of PT-RS groups of PT-RS samples and a number of samples per PT-RS group may be based on the number of resource blocks (NRB) allocated and the length of OCC. In these embodiments, each PT-RS group may have either 2 or 4 PT-RS samples.

[0105] Some embodiments are directed to an apparatus of a User Equipment (UE) configured for operation in a new radio (NR) network. The apparatus may comprise processing circuitry and memory. The processing circuity may be configured to decode signalling (e.g., configuration information) to configure the UE for transmission of phase-tracking reference signals (PT-RS) for a PUSCH transmission with an orthogonal cover code (OCC) and determine a PT-RS pattern based on a bandwidth for the PUSCH transmission and length of the OCC. The processing circuitry may also apply the OCC to one or more OFDM symbols of the PUSCH transmission. The PUSCH transmission may comprise the PT-RS in accordance with the PT-RS pattern. In theseAG2410-PCT 1884.Q79WO1 embodiments, the OCC may be applied either across OFDM symbols or within an OFDM symbol. In these embodiments, the PUSCH transmission may comprise a Discrete Fourier Transform-spread orthogonal frequency division multiplexed (DFT-S-OFDM) waveform.

[0106] FIG.5 illustrates a functional block diagram of a wireless communication device, in accordance with some embodiments. Wireless communication device 500 may be suitable for use as a UE or gNB configured for operation in a 5G NR or 6G network. Some embodiments are directed to an apparatus of a UE or gNB comprising processing circuitry and memory configured for operation in a 5G NR or 6G network.

[0107] In one embodiment, FIG.5 illustrates a functional block diagram of a communication device (STA) that may be suitable for use as an AP STA, a non-AP STA or other user device in accordance with some embodiments. The wireless communication device 500 may also be suitable for use as a handheld device, a mobile device, a cellular telephone, a smartphone, a tablet, a netbook, a wireless terminal, a laptop computer, a wearable computer device, a femtocell, a high data rate (HDR) subscriber device, an access point, an access terminal, or other personal communication system (PCS) device.

[0108] The wireless communication device 500 may include communications circuitry 502 and a transceiver 510 for transmitting and receiving signals to and from other communication devices using one or more antennas 501. The communications circuitry 502 may include circuitry that can operate the physical layer (PHY) communications and / or medium access control (MAC) communications for controlling access to the wireless medium, and / or any other communications layers for transmitting and receiving signals. The wireless communication device 500 may also include processing circuitry 506 and memory 508 arranged to perform the operations described herein. In some embodiments, the communications circuitry 502 and the processing circuitry 506 may be configured to perform operations detailed in the above figures, diagrams, and flows.

[0109] In accordance with some embodiments, the communications circuitry 502 may be arranged to contend for a wireless medium and configure frames or packets for communicating over the wireless medium. TheAG2410-PCT 1884.Q79WO1 communications circuitry 502 may be arranged to transmit and receive signals. The communications circuitry 502 may also include circuitry for modulation / demodulation, upconversion / downconversion, filtering, amplification, etc. In some embodiments, the processing circuitry 506 of the wireless communication device 500 may include one or more processors. In other embodiments, two or more antennas 501 may be coupled to the communications circuitry 502 arranged for sending and receiving signals. The memory 508 may store information for configuring the processing circuitry 506 to perform operations for configuring and transmitting message frames and performing the various operations described herein. The memory 508 may include any type of memory, including non-transitory memory, for storing information in a form readable by a machine (e.g., a computer). For example, the memory 508 may include a computer-readable storage device, read-only memory (ROM), random-access memory (RAM), magnetic disk storage media, optical storage media, flash-memory devices and other storage devices and media.

[0110] In some embodiments, the wireless communication device 500 may be part of a portable wireless communication device, such as a personal digital assistant (PDA), a laptop or portable computer with wireless communication capability, a web tablet, a wireless telephone, a smartphone, a wireless headset, a pager, an instant messaging device, a digital camera, an access point, a television, a medical device (e.g., a heart rate monitor, a blood pressure monitor, etc.), a wearable computer device, or another device that may receive and / or transmit information wirelessly.

[0111] In some embodiments, the wireless communication device 500 may include one or more antennas 501. The antennas 501 may include one or more directional or omnidirectional antennas, including, for example, dipole antennas, monopole antennas, patch antennas, loop antennas, microstrip antennas, or other types of antennas suitable for transmission of RF signals. In some embodiments, instead of two or more antennas, a single antenna with multiple apertures may be used. In these embodiments, each aperture may be considered a separate antenna. In some multiple-input multiple-output (MIMO) embodiments, the antennas may be effectively separated for spatial diversity andAG2410-PCT 1884.Q79WO1 the different channel characteristics that may result between each of the antennas and the antennas of a transmitting device.

[0112] In some embodiments, the wireless communication device 500 may include one or more of a keyboard, a display, a non-volatile memory port, multiple antennas, a graphics processor, an application processor, speakers, and other mobile device elements. The display may be an LCD screen including a touch screen.

[0113] Although the wireless communication device 500 is illustrated as having several separate functional elements, two or more of the functional elements may be combined and may be implemented by combinations of software-configured elements, such as processing elements including digital signal processors (DSPs), and / or other hardware elements. For example, some elements may include one or more microprocessors, DSPs, field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), radio- frequency integrated circuits (RFICs) and combinations of various hardware and logic circuitry for performing at least the functions described herein. In some embodiments, the functional elements of the wireless communication device 500 may refer to one or more processes operating on one or more processing elements.

[0114] Examples:

[0115] 1. A system and method of wireless communication for a fifth generation (5G) or new radio (NR) system: determined, by UE, that orthogonal cover code (OCC) is applied for physical uplink shared channel (PUSCH) transmission with Discrete Fourier Transform-spread-OFDM (DFT-s-OFDM) waveform; determined, by UE, a phase tracking reference signal (PT-RS) pattern in accordance with the spreading factor of the OCC and the number of PRBs for PUSCH transmission; and transmitted, by UE, the PT-RS in accordance with the determined PT-RS pattern;

[0116] 2. The method of example 1, wherein when OCC is applied for PUSCH transmission with DFT-s-OFDM waveform across OFDM symbols or within a symbol, OCC is applied after PT-RS insertion in the allocated PUSCH transmissionAG2410-PCT 1884.Q79WO1

[0117] 3. The method of example 1, wherein when OCC is applied for PUSCH transmission with DFT-s-OFDM waveform across OFDM symbols or within a symbol, the PT-RS pattern for the corresponding PUSCH transmission is determined in accordance with the scheduled bandwidth, and the spreading factor used for the OCC or the OCC length

[0118] 4. The method of example 1, wherein when OCC is applied for PUSCH transmission across OFDM symbols, or within a symbol, TBS is determined in accordance with allocated bandwidth, the number of symbols for PUSCH transmission, demodulation reference signal (DMRS) overhead, modulation and coding scheme (MCS) and spreading factor used for OCC or the OCC length.

[0119] 5. The method of example 1, wherein the OCC can also apply for the PUSCH with transport block over multiple slot (TBoMS).

[0120] 6. The method of example 1, wherein when the OCC is applied within a symbol, or across OFDM symbols for TBoMS transmission, the TBS is determined in accordance with allocated bandwidth, the number of symbols in each slot and the number of slots for TBoMS transmission, DMRS overhead and spreading factor used for the OCC on the TBoMS transmission or the OCC length

[0121] 7. The method of example 1, wherein when OCC is applied for PUSCH transmission across OFDM symbols, or within a symbol, the amount of resources determined for UCI transmission may be determined in accordance with the number of bits for UCI and data, the beta offset, the amount of the resource allocated for PUSCH transmission, and the spreading factor used for OCC or the OCC length

[0122] 8. The method of example 1, wherein the UCI may include at least one or more of HARQ-ACK, CSI part 1, CSI part 2, CG-UCI, HARQ-ACK and CG-UCI, UTO-UCI.

[0123] The Abstract is provided to comply with 37 C.F.R. Section 1.72(b) requiring an abstract that will allow the reader to ascertain the nature and gist of the technical disclosure. It is submitted with the understanding that it will not be used to limit or interpret the scope or meaning of the claims. TheAG2410-PCT 1884.Q79WO1 following claims are hereby incorporated into the detailed description, with each claim standing on its own as a separate embodiment.

Claims

AG2410-PCT 1884.Q79WO1 CLAIMS What is claimed is:

1. An apparatus of a User Equipment (UE) configured for operation in a new radio (NR) network, the apparatus comprising: processing circuitry; and memory, the processing circuitry configured to: decode signalling to configure the UE for transmission of phase-tracking reference signals (PT-RS) for a physical uplink shared channel (PUSCH) transmission with an orthogonal cover code (OCC), determine a PT-RS pattern based on a bandwidth for the PUSCH transmission and length of the OCC; apply the OCC to one or more OFDM symbols of the PUSCH transmission, the PUSCH transmission comprising the PT-RS in accordance with the PT-RS pattern, wherein the OCC is applied either across OFDM symbols or within an OFDM symbol, and wherein the PUSCH transmission comprises a Discrete Fourier Transform-spread orthogonal frequency division multiplexed (DFT-S-OFDM) waveform.

2. The apparatus of claim 1, wherein the OCC is applied after insertion of the PT-RS in resources allocated for the PUSCH transmission.

3. The apparatus of claim 1, wherein the PT-RS is inserted in data prior to a DFT operation.

4. The apparatus of claim 1, wherein the processing circuitry is configured to determine the PT-RS pattern based on a number of resource blocks (NRB) allocated for the PUSCH transmission and the length of OCC.

5. The apparatus of claim 4, wherein when transform precoding is enabled, and when the OCC is applied within an OFDM symbol, the processingAG2410-PCT 1884.Q79WO1 circuitry is configured to distribute a number of PT-RS groups of PT-RS samples within the OFDM symbol, wherein the number of PT-RS groups of PT-RS samples and a number of samples per PT-RS group is based on the number of resource blocks (NRB) allocated and the length of OCC, and wherein each PT-RS group has either 2 or 4 PT-RS samples.

6. The apparatus of claim 5 wherein when transform precoding is enabled and when the UE is configured with an OCC of length (LOCC) (OCC length) for the PUSCH transmission, the processing circuitry is configured to divide the number of resource blocks (NRB) allocated by the OCC length (LOCC) to determine the number of PT-RS groups of PT-RS samples and the number of samples per PT-RS group.

7. The apparatus of claim 5, wherein when transform precoding is enabled and when the UE is configured with an OCC of length (LOCC) (OCC length) for the PUSCH transmission, the processing circuitry is configured to multiply the OCC length by one or more configured resource block ranges to determine the number of PT-RS groups of PT-RS samples and the number of samples per PT-RS group for the PT-RS transmission.

8. The apparatus of claim 6 or 7, wherein when the UE is not configured with an OCC for the PUSCH transmission, the processing circuitry is configured to: set the OCC length (LOCC) to one and divide the number of resource blocks (NRB) allocated by the OCC length (LOCC) to determine the number of PT- RS groups of PT-RS samples and the number of samples per PT-RS group; or determine the number of PT-RS groups of PT-RS samples and the number of samples per PT-RS group based on the number of resource blocks (NRB) allocated without use an OCC length (LOCC).

9. The apparatus of claim 8 wherein after distributing the number of PT- RS groups of PT-RS samples within the OFDM symbol, the processing circuitryAG2410-PCT 1884.Q79WO1 configures the UE to perform the transform precoding after application of the OCC to generate the DFT-S-OFDM waveform for the PUSCH transmission.

10. The apparatus of claim 5, wherein when the OCC is applied for the PUSCH transmission, for transport block (TB) processing over multiple slots, the processing circuitry is further configured to determine a number of resource elements (REs) allocated for the PUSCH transmission (NRE) as follows:length of thewhere ^^^^^^^^^^^^^^^^is a total number of allocated PRBs for the UE and N is the number of slots used for TB size (TBS) determination, and where N’REis a number of REs allocated for the PUSCH transmission within a PRB.

11. The apparatus of claim 5, wherein when the OCC is applied for the PUSCH transmission that includes one of an hybrid automatic repeat request acknowledgment (HARQ-ACK) and channel state information (CSI), the processing circuitry is configured to determine a number of coded modulation symbols per layer for the one the HARQ-ACK and the CSI by dividing a number of resource elements that can be used for transmission of uplink configuration information (UCI) in an OFDM symbol by a length of the OCC.

12. The apparatus of claim 5, wherein when the PUSCH transmission is being transmitted to a node of a non-terrestrial network (NTN), the processing circuitry is configured to apply the OCC to the OFDM symbols of the PUSCH transmission; and wherein when the PUSCH transmission is being transmitted to a ground- based node of a terrestrial network, the processing circuitry is configured to refrain from applying the OCC to the OFDM symbols of the PUSCH transmission.

13. A computer-readable storage medium that stores instructions for execution by processing circuitry of a User Equipment (UE) configured for operation in a new radio (NR) network, the processing circuitry to:AG2410-PCT 1884.Q79WO1 decode signalling to configure the UE for transmission of phase-tracking reference signals (PT-RS) for a physical uplink shared channel (PUSCH) transmission with an orthogonal cover code (OCC), determine a PT-RS pattern based on a bandwidth for the PUSCH transmission and length of the OCC; apply the OCC to one or more OFDM symbols of the PUSCH transmission, the PUSCH transmission comprising the PT-RS in accordance with the PT-RS pattern, wherein the OCC is applied either across OFDM symbols or within an OFDM symbol, and wherein the PUSCH transmission comprises a Discrete Fourier Transform-spread orthogonal frequency division multiplexed (DFT-S-OFDM) waveform.

14. The computer-readable storage medium of claim 13, wherein the OCC is applied after insertion of the PT-RS in resources allocated for the PUSCH transmission.

15. The computer-readable storage medium of claim 13, wherein the PT- RS is inserted in data prior to a DFT operation.

16. The computer-readable storage medium of claim 13, wherein the processing circuitry is configured to determine the PT-RS pattern based on a number of resource blocks (NRB) allocated for the PUSCH transmission and the length of OCC.

17. The computer-readable storage medium of claim 16, wherein when transform precoding is enabled, and when the OCC is applied within an OFDM symbol, the processing circuitry is configured to distribute a number of PT-RS groups of PT-RS samples within the OFDM symbol, wherein the number of PT-RS groups of PT-RS samples and a number of samples per PT-RS group is based on the number of resource blocks (NRB) allocated and the length of OCC, andAG2410-PCT 1884.Q79WO1 wherein each PT-RS group has either 2 or 4 PT-RS samples.

18. An apparatus of a generation node B (gNB) configured for operation in a new radio (NR) network, the apparatus comprising: processing circuitry; and memory, the processing circuitry configured to: encode signalling for transmission to a User Equipment (UE) to configure the UE for transmission of phase-tracking reference signals (PT-RS) for a physical uplink shared channel (PUSCH) transmission with an orthogonal cover code (OCC); and decode the PUSCH transmission from the UE, the PUSCH transmission comprising a Discrete Fourier Transform-spread orthogonal frequency division multiplexed (DFT-S-OFDM) waveform, wherein a PT-RS pattern is based on a bandwidth for the PUSCH transmission and length of the OCC, and wherein the OCC is applied to one or more OFDM symbols of the PUSCH transmission, the PUSCH transmission comprising the PT-RS in accordance with the PT-RS pattern.

19. The apparatus of claim 18, wherein the PT-RS pattern is based on a number of resource blocks (NRB) allocated for the PUSCH transmission and the length of OCC.

20. The apparatus of claim 19, wherein when transform precoding is enabled, and when the OCC is applied within an OFDM symbol, a number of PT-RS groups of PT-RS samples are distributed within the OFDM symbol, wherein the number of PT-RS groups of PT-RS samples and a number of samples per PT-RS group is based on the number of resource blocks (NRB) allocated and the length of OCC, and wherein each PT-RS group has either 2 or 4 PT-RS samples.

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