CSI reporting subband granularity configuration in full duplex

Abstract

Aspects are provided that allow a network entity to configure sub-band CSI reports and allow a UE to send sub-band CSI reports in a full duplex slot. First, the UE receives a CSI reporting configuration for a plurality of CSI subbands indicating at least one bandwidth portion (BWP). The UE then receives the CSI-RS in a time slot associated with the full duplex mode, the time slot further associated with a frequency band including a downlink sub-band and an uplink sub-band. Then, the UE transmits a CSI report, where the CSI report includes a first CSI associated with the CSI-RS for a first one of the CSI sub-bands that overlaps with the downlink sub-band in frequency, and the CSI report lacks a second CSI for a second one of the CSI sub-bands that overlaps with the uplink sub-band in frequency.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Non-Provisional Application No. 18 / 360,774, filed on July 27, 2023, and U.S. Provisional Application No. 63 / 371,012, filed on August 10, 2022, which are hereby incorporated by reference in their entirety. Technical Field

[0003] The present disclosure relates to wireless communications, and more particularly to managing channel state information (CSI) subbands and reporting in full-duplex communication scenarios. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5GNR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Certain aspects of 5G NR may be based on 4G Long Term Evolution (LTE) standards. It is necessary to further improve 5G NR technology. In addition, these improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the invention

[0006] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all contemplated aspects, and is neither intended to identify the key or critical elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to a more detailed description presented later.

[0007] An innovative aspect of the subject matter described in the present disclosure can be implemented in an apparatus for wireless communication, wherein the apparatus is a user equipment (UE). The apparatus includes: one or more memories; and one or more processors, each of which is communicatively coupled to at least one of the one or more memories. The one or more processors are operable, individually or in any combination, to cause the apparatus to: receive a CSI report configuration indicating a plurality of channel state information (CSI) subbands of at least one bandwidth part (BWP); receive a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot further being associated with a frequency band including a downlink subband and an uplink subband; and send a CSI report. The CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps with the downlink subband in frequency, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps with the uplink subband in frequency.

[0008] Another innovative aspect of the subject matter described in the present disclosure can be implemented in an apparatus for wireless communication, wherein the apparatus is a network entity. The apparatus includes: one or more memories; and one or more processors, each of which is communicatively coupled to at least one of the one or more memories. The one or more processors are operable, individually or in any combination, to cause the apparatus to: send a CSI report configuration indicating multiple CSI subbands of at least one BWP; send a CSI-RS in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband; and receive a CSI report. The CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps with the downlink subband in frequency, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps with the uplink subband in frequency.

[0009] Another innovative aspect of the subject matter described in the present disclosure can be implemented in a method for wireless communication at a UE. The method includes: receiving a CSI report configuration indicating multiple CSI subbands of at least one BWP; receiving a CSI-RS in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband; and sending a CSI report. The CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with the uplink subband.

[0010] Another innovative aspect of the subject matter described in the present disclosure can be implemented in a method for wireless communication at a network entity. The method includes: sending a CSI report configuration indicating multiple CSI subbands of at least one BWP; sending a CSI-RS in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband; and receiving a CSI report. The CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with the uplink subband.

[0011] To achieve the foregoing and related ends, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail some illustrative features of one or more aspects. However, these features are merely indicative of some of the various ways in which the principles of the various aspects may be employed, and this specification is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1A is a diagram illustrating an example of a wireless communication system and an access network.

[0013] Figure 1B A diagram illustrating an example decomposed base station architecture is shown.

[0014] Figure 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0015] Figure 2B is a diagram illustrating an example of DL channels within a subframe according to various aspects of the present disclosure.

[0016] Figure 2C is a diagram illustrating an example of a second frame according to various aspects of the present disclosure.

[0017] Figure 2D is a diagram illustrating an example of UL channels within a subframe according to various aspects of the present disclosure.

[0018] Figure 3 is a diagram illustrating an example of a base station and a user equipment (UE) in an access network.

[0019] FIG. 4A to FIG. 4C An example of full-duplex communication is illustrated.

[0020] FIG. 5A to FIG. 5C Different examples of a UE and a base station communicating in a full-duplex scenario are illustrated.

[0021] Figure 6 An example of frequency resource allocation for downlink transmission is illustrated.

[0022] Figure 7 Examples of different methods for frequency resource allocation in Sub-Band Frequency Division Duplex (SBFD) are illustrated.

[0023] Figure 8 Another example of allocation of frequency resources for SBFD is illustrated.

[0024] Fig. 9 Still another example of allocation of frequency resources for SBFD is illustrated.

[0025] Fig.10 are additional examples of allocation of frequency resources for SBFD.

[0026] Fig.11 is an example of a downlink and uplink timeslot format ('D+U' timeslot).

[0027] Fig.12 Another example of allocation of frequency resources for SBFD is illustrated.

[0028] Fig.13 Still another example of allocation of frequency resources for SBFD is illustrated.

[0029] Fig.14 It is a call flow diagram between UE and base station.

[0030] Fig.15 is a flow chart of a method of performing wireless communication at a UE.

[0031] Fig.16 is a flow chart of a method of wireless communication at a network entity.

[0032] Fig.17 is a diagram illustrating an example of a hardware implementation for an example apparatus.

[0033] Fig.18 is a diagram illustrating another example of a hardware implementation for another example apparatus. DETAILED DESCRIPTION

[0034] The specific embodiments described below in conjunction with the accompanying drawings are intended as descriptions of various configurations and are not intended to represent the only configurations with which the concepts described herein can be practiced. In order to provide a thorough understanding of the various concepts, the specific embodiments include specific details. However, it is apparent to those skilled in the art that these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid blurring such concepts.

[0035] Various aspects of the subject matter described in the present disclosure relate to wireless communications, and more particularly to enhanced channel state information (CSI) reporting in full-duplex scenarios, such as in-band full-duplex (IBFD) and sub-band frequency division duplex (SBFD). In these scenarios, a user equipment (UE) may receive a CSI reporting configuration indicating multiple CSI subbands of at least one bandwidth part (BWP). The UE may also receive a CSI reference signal (CSI-RS) in a time slot associated with the full-duplex mode, the time slot including a frequency band having a downlink subband and an uplink subband. The UE then sends a CSI report including CSI associated with the CSI-RS for a first CSI subband that overlaps in frequency with the downlink subband, while the CSI report lacks CSI for a second CSI subband that overlaps in frequency with the uplink subband.

[0036] In some examples, the second CSI subband overlaps in frequency with the uplink subband and the guard band between the downlink subband and the uplink subband. In some examples, the CSI report also lacks a third CSI for a third CSI subband that partially overlaps in frequency with the uplink subband or the guard band between the downlink subband and the uplink subband. In some examples, the third CSI subband overlaps in frequency with the uplink subband or the guard band between the downlink subband and the uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband that overlaps with the downlink subband. In some examples, the granularity of the CSI subband is based on the BWP size or the downlink subband size. In some examples, at least one BWP includes a single active BWP in the frequency band, and the BWP size is the size of the single active BWP. In some examples, at least one BWP includes a first active BWP and a second active BWP in the frequency band, wherein different groups of CSI subbands are within the respective active BWPs, and the granularity of the CSI subbands is based on the BWP size of the respective active BWPs. The granularity of the CSI subband can also be based on the duplex mode of the CSI report. In some examples, the initial resource block for the CSI subband is based on a reference resource block associated with a component carrier including at least one BWP. In some examples, the frequency band includes a second downlink subband, and the CSI subband is defined relative to different reference resource blocks for different downlink subbands.

[0037] Certain aspects of the subject matter described in the present disclosure may be implemented to achieve one or more of the following potential advantages. Enhanced handling of CSI reports in full-duplex communication scenarios may improve wireless communication performance. The accuracy and efficiency of CSI reports may be improved by selectively reporting CSI for CSI subbands overlapping with downlink subbands and excluding CSI for CSI subbands overlapping with uplink subbands. For example, by focusing on downlink subbands, the UE may provide more relevant and accurate channel information to the base station, which may then make better decisions about resource allocation and scheduling. This approach also helps minimize interference, because the base station may allocate resources more efficiently based on accurate CSI reports, and avoid potential conflicts between uplink and downlink transmissions. This approach also allows for better utilization of available frequency resources, because the UE may save processing power and reduce the overhead associated with generating and sending unnecessary CSI reports by not reporting CSI for subbands overlapping with uplink subbands.

[0038] In addition, the following additional potential advantages may be achieved by implementing other aspects of the subject matter described in the present disclosure. In one example, by considering CSI subbands that overlap in frequency with both an uplink subband and a guard band between a downlink subband and an uplink subband, the system may further improve the accuracy of CSI reporting by considering the impact of the guard band on channel conditions. In one example, by excluding CSI for subbands that partially overlap in frequency with an uplink subband or a guard band between a downlink subband and an uplink subband, the system may further reduce the overhead associated with generating and sending unnecessary CSI reports, resulting in more efficient communications. In one example, including CSI for subbands that partially overlap in frequency with an uplink subband or a guard band between a downlink subband and an uplink subband and a portion that overlaps with a downlink subband may provide more accurate channel information for a downlink subband, thereby improving resource allocation and scheduling decisions. In one example, CSI including portions for a subband that overlap in frequency with an uplink subband or a guard band between a downlink subband and an uplink subband, and portions that overlap with both a downlink subband and a guard band can provide more accurate channel information for the downlink subband and the guard band, thereby further improving resource allocation and scheduling decisions.

[0039] In one example, basing the granularity of the CSI subbands on the BWP size allows for more adaptable and flexible CSI reporting as it can better align with varying BWP sizes in different communication scenarios. In one example, when there is a single active BWP in the band, basing the CSI subband granularity on the BWP size ensures that the CSI reporting is tailored to the specific active BWP, resulting in more accurate and efficient communications. In one example, where there are multiple active BWPs with different BWP sizes in the band, defining the granularity of the CSI subbands based on the respective BWP sizes allows for more accurate and efficient CSI reporting for the active BWP, thereby improving resource allocation and scheduling decisions for the BWP. In one example, basing the granularity of the CSI subbands on both the BWP size and the downlink subband size allows for even more accurate and adaptable CSI reporting as it takes into account the specific downlink subband size in addition to the BWP size.

[0040] In one example, when there is a single active BWP in the frequency band and the frequency band includes a second downlink subband, basing the granularity of the CSI subband on the aggregate size of the downlink subbands allows for more accurate and efficient CSI reporting because it takes into account the combined impact of the two downlink subbands on the channel conditions. In one example, basing the granularity of the CSI subband on the duplex mode of the CSI reporting allows for more adaptable and flexible CSI reporting because it can be better aligned with varying duplex modes in different communication scenarios. In one example, when the CSI reporting configuration indicates both a half-duplex subband size and a full-duplex subband size, basing the granularity of the CSI subband on the full-duplex subband size when the duplex mode is full-duplex ensures that the CSI report is customized for the specific duplex mode, resulting in more accurate and efficient communication. In one example, basing the initial resource block for the CSI subband on the reference resource block associated with the component carrier that includes the BWP ensures that the CSI subband is aligned with the component carrier, resulting in more accurate and efficient CSI reporting. In one example, when the frequency band includes a second downlink subband, defining initial resource blocks for CSI subbands associated with different downlink subbands based on different reference resource blocks allows more accurate and efficient CSI reporting for the downlink subbands, thereby improving resource allocation and scheduling decisions for the downlink subbands.

[0041] Time division duplex (TDD) deployment and frequency division duplex (FDD) deployment can be half-duplex or full-duplex. In half-duplex communication, a base station or UE can send and receive data at different times but not at the same time. In contrast, in full-duplex communication, a base station or UE can send and receive data at the same time. An example of full-duplex communication is IBFD, in which a base station or UE can send and receive data in at least part of the same frequency resources (or all of the same frequency resources) in the same frequency resources. Another example of full-duplex communication is sub-band FDD (SBFD, also known as flexible duplex), in which a base station or UE can send and receive data in different frequency resources.

[0042] Half-duplex or full-duplex UEs can use SBFD or IBFD to communicate with full-duplex base stations. In SBFD or IBFD, downlink frequency resources and uplink frequency resources can occupy different sub-bands of the frequency band. To enhance communication in such scenarios, it would be helpful for these UEs to apply CSI measurement and reporting in such sub-bands.

[0043] However, conventional CSI configurations do not address CSI subband reporting in conjunction with full-duplex communications. Although conventional CSI reporting configurations provide aligned FDRA and subband CSI reporting in half-duplex scenarios, it would be helpful to extend these configurations to full-duplex scenarios (e.g., SBFD or IBFD) that include multiple downlink subbands separated by uplink subbands. Furthermore, for full-duplex scenarios, it would be helpful to define the frequency domain granularity of such downlink subbands in terms of resource block groups (RBGs) or physical resource blocks (PRBs), since subband CSI reporting can depend on the granularity of the downlink subbands. Additionally, it would be helpful to define CSI subbands in conjunction with SBFD or other full-duplex scenarios.

[0044] Therefore, aspects of the present disclosure allow for CSI subband reporting in conjunction with full-duplex communications. In one aspect, CSI subbands may be defined in a variety of ways based on associated frequency division resource assignments (FDRA) for full-duplex time slots. On the other hand, the frequency domain granularity of CSI subbands may be defined in a variety of ways for full-duplex time slots (e.g., SBFD time slots). In yet another aspect, different frequency domain granularities may be defined for CSI subbands associated with different time slot types or duplex modes (e.g., full-duplex time slots, half-duplex time slots, or time slots including full-duplex symbols and half-duplex symbols). In additional aspects, reference resource blocks (PRBs) indicating the initial reference point of the CSI subbands may be defined in different ways for full-duplex scenarios. Examples of these and other aspects will be described subsequently in conjunction with the aforementioned figures.

[0045] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0046] As an example, an element, or any part of an element, or any combination of elements can be implemented as a "processing system", which includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic components, discrete hardware circuits, and other suitable hardware configured to perform various functionalities described throughout the present disclosure. One or more processors in a processing system can execute software. Whether it is referred to as software, firmware, middleware, microcode, hardware description language, or other names, software should be widely interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes, functions, etc.

[0047] Therefore, in one or more example embodiments, the described functions can be implemented with hardware, software or any combination thereof. If implemented in software, the function can be stored or encoded on a computer-readable medium as one or more instructions or codes. Computer-readable media include computer storage media. Storage media can be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include a random access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), an optical disk storage device, a magnetic disk storage device, other magnetic storage devices, a combination of computer-readable media of the above type, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.

[0048] Figure 1A1 is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes a base station 102, a user equipment (UE) 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). A macro cell includes a base station. A small cell includes a femto cell, a pico cell, and a micro cell.

[0049] The base station 102 configured for 4G Long Term Evolution (LTE) (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). The base station 102 configured for 5G New Radio (NR) (collectively referred to as Next Generation RAN (NG-RAN)) can interface with the core network 190 via a second backhaul link 184. Among other functions, the base station 102 can also perform one or more of the following functions: delivery of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment tracking, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 may communicate with each other directly or indirectly (eg, via the EPC 160 or the core network 190) via the third backhaul link 134 (eg, an X2 interface). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 may be wired or wireless.

[0050] Base station 102 can communicate wirelessly with UE 104. Each of base stations 102 can provide communication coverage for a corresponding geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' may have a coverage area 110' that overlaps with the coverage area 110 of one or more macro base stations 102. A network including both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). A communication link 120 between base station 102 and UE 104 may include an uplink (UL) (also referred to as a reverse link) transmission from UE 104 to base station 102 and / or a downlink (DL) (also referred to as a forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple input multiple output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link may be through one or more carriers. Base station 102 / UE 104 may use spectrum of up to Y megahertz (MHz) (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in carrier aggregation for up to Yx MHz (x component carriers) in total for transmission in each direction. These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​compared to UL). Component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0051] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communication may be through a variety of wireless D2D communication systems, such as, for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0052] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 in, for example, a 5 gigahertz (GHz) unlicensed spectrum. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) to determine whether a channel is available prior to communication.

[0053] The small cell 102' may operate in licensed and / or unlicensed spectrum. When operating in an unlicensed spectrum, the small cell 102' may employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as used by the Wi-Fi AP 150. The small cell 102' employing NR in the unlicensed spectrum may improve the coverage of the access network and / or increase the capacity of the access network.

[0054] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). Frequencies between FR1 and FR2 are typically referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is typically referred to (interchangeably) as the “below 6 GHz” band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is typically (interchangeably) referred to as the “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU).

[0055] In view of the above aspects, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used in this document, it can broadly represent a frequency that can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used in this document, it can broadly represent a frequency that can include mid-band frequencies, can be within FR2, or can be within the EHF band.

[0056] The base station 102, whether a small cell 102' or a large cell (e.g., a macro base station), may include and / or be referred to as an eNB, a gNodeB (gNB), or another type of base station. Some base stations, such as gNB 180, may operate in the traditional sub-6 GHz spectrum, in millimeter wave frequencies, and / or near millimeter wave frequencies to communicate with the UE 104. When the gNB 180 operates in millimeter wave or near millimeter wave frequencies, the gNB 180 may be referred to as a millimeter wave base station. The millimeter wave base station 180 may utilize beamforming 182 with the UE 104 to compensate for path loss and short range. The base station 180 and the UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0057] Base station 180 may transmit beamformed signals in one or more transmit directions 182' to UE 104. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182". UE 104 may also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 may receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beam training to determine the best receive direction and transmit direction for each of base station 180 / UE 104. The transmit direction and receive direction of base station 180 may be the same or different. The transmit direction and receive direction of UE 104 may be the same or different.

[0058] The EPC 160 may include a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, an MBMS gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. Typically, the MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides UE IP address allocation and other functions. The PDN gateway 172 and the BM-SC 170 are connected to IP services 176. The IP services 176 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 may provide functions for MBMS user service configuration and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS delivery, may be used to authorize and initiate MBMS bearer services in a public land mobile network (PLMN), and may be used to schedule MBMS delivery. The MBMS gateway 168 may be used to distribute MBMS traffic to base stations 102 belonging to a multicast broadcast single frequency network (MBSFN) area that broadcasts a specific service, and may be responsible for session management (start / stop) and for collecting eMBMS-related charging information.

[0059] The core network 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. The AMF 192 may communicate with a unified data management (UDM) 196. The AMF 192 is a control node that handles signaling between the UE 104 and the core network 190. Typically, the AMF 192 provides quality of service (QoS) flow and session management. All user IP packets are delivered through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to an IP service 197. The IP service 197 may include the Internet, an intranet, an IMS, a packet switching (PS) streaming service, and / or other IP services.

[0060] Base stations may include and / or be referred to as gNBs, Node Bs, eNBs, access points, base transceivers, radio base stations, radio transceivers, transceiver functions, basic service sets (BSSs), extended service sets (ESSs), transmit receive points (TRPs), or some other suitable terminology. Base stations 102 provide access points to EPC 160 or core network 190 for UEs 104. Examples of UEs 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablets, smart devices, wearable devices, vehicles, electric meters, gas pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similarly functional devices. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0061] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or components in a variety of ways. In a 5G NR system or network, a network node, a network entity, a network device, a mobility element of a network, a RAN node, a core network node, a network element or network equipment such as a BS or one or more units (or one or more components) performing base station functionality can be implemented in an aggregated or decomposed architecture. For example, a BS (such as a Node B (NB), an eNB, an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) can be implemented as an aggregated base station (also called an independent BS or a monolithic BS) or a decomposed base station.

[0062] The aggregated base station may be configured to utilize a radio protocol stack physically or logically integrated within a single RAN node. The decomposed base station 181 may be configured to utilize a protocol stack physically or logically distributed between two or more units, such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, the CU 183 may be implemented within a RAN node, and one or more DUs 185 may be co-located with the CU, or alternatively, may be geographically or virtually distributed in one or more other RAN nodes. The DU may be implemented to communicate with one or more RUs 187. Each of the CU, DU, and RU may also be implemented as a virtual unit, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0063] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be used in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (network configurations such as those initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Decomposition may include distributing functionality across two or more units at various physical locations, as well as virtually distributing functionality of at least one unit, which may enable flexibility in network design. Individual units of a disaggregated base station or disaggregated RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0064] Figure 1B A diagram illustrating an example decomposed base station 181 architecture is shown. The decomposed base station 181 architecture may include one or more CUs 183, which may communicate directly with the core network 190 via a backhaul link, or indirectly with the core network 190 through one or more decomposed base station units (such as a near real-time RIC 125 via an E2 link, or a non-real-time RIC 115 associated with a service management and orchestration (SMO) framework 105, or both). The CU 183 may communicate with one or more DUs 185 via corresponding midhaul links (such as an F1 interface). The DU 185 may communicate with one or more RUs 187 via corresponding fronthaul links. The RUs 187 may communicate with the UEs 104, respectively, via one or more radio frequency (RF) access links. In some implementations, the UE 104 may be served simultaneously by multiple RUs 187.

[0065] Each of the units (i.e., CU 183, DU 185, RU 187, and near-RT RIC 125, non-RT RIC 115, and SMO framework 105) may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of these units or an associated processor or controller that provides instructions to the communication interface of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface configured to receive a signal or transmit a signal to one or more of the other units via a wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, a transmitter, or a transceiver (such as a radio frequency (RF) transceiver) configured to receive a signal or transmit a signal to one or more of the other units via a wireless transmission medium, or both.

[0066] In some aspects, CU 183 may host higher-layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function can be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 183. CU 183 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 183 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface such as an E1 interface. As needed, CU 183 may be implemented to communicate with DU 185 for network control and signaling.

[0067] DU 185 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RU 187. In some aspects, DU 185 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) at least in part according to a functional split such as defined by the Third Generation Partnership Project (3GPP). In some aspects, DU 185 may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 185 or with control functions hosted by CU 183.

[0068] The lower layer functionality may be implemented by one or more RUs 187. In some deployments, the RU 187 controlled by the DU 185 may correspond to a logical node that hosts RF processing functions or low PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on functional splitting (such as lower layer functional splitting). In such an architecture, the RU 187 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 187 may be controlled by the corresponding DU 185. In some scenarios, this configuration may enable the implementation of the DU 185 and CU 183 in a cloud-based RAN architecture (such as a vRAN architecture).

[0069] The SMO framework 105 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 189) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 183, DU 185, RU 187, and near-RT RIC 125. In some specific implementations, the SMO framework 105 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 111) via the O1 interface. Additionally, in some specific implementations, the SMO framework 105 may communicate directly with one or more RUs 187 via the O1 interface. The SMO framework 105 may also include a non-RT RIC 115 configured to support the functionality of the SMO framework 105 .

[0070] The non-RT RIC 115 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 125. The non-RT RIC 115 may be coupled to or in communication with the near-RT RIC 125 (such as via an A1 interface). The near-RT RIC 125 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 183, one or more DUs 185, or both, and the O-eNB with the near-RT RIC 125.

[0071] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 125, the non-RT RIC 115 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 125 and may be received from a non-network data source or from a network function at the SMO framework 105 or the non-RT RIC 115. In some examples, the non-RT RIC 115 or the near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 115 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 105 (such as via reconfiguration of O1) or via creation of RAN management policies (such as A1 policies).

[0072] refer to Figure 1A and Figure 1B In certain aspects, the UE 104 may include a CSI subband report sending component 198, which is configured to: receive a CSI report configuration indicating multiple channel state information (CSI) subbands of at least one bandwidth part (BWP); receive a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband; and send a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with the uplink subband. In addition, in certain aspects, a network entity (such as a base station 102 / 180, a decomposed base station 181, or a component of the decomposed base station 181 (such as a CU 183, a DU 185, or a RU 187)) may include a CSI subband report receiving component 199, which is configured to: send a CSI report configuration indicating multiple CSI subbands of at least one BWP; send a CSI-RS in a time slot associated with a full-duplex mode, which time slot is further associated with a frequency band including a downlink subband and an uplink subband; and receive a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps with the downlink subband in frequency, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps with the uplink subband in frequency.

[0073] Although the present disclosure may focus on 5G NR, the concepts and aspects described herein may be applicable to other similar areas such as LTE, Advanced LTE (LTE-A), Code Division Multiple Access (CDMA), Global System for Mobile Communications (GSM), and / or other wireless / radio access technologies.

[0074] Figure 2A FIG200 is a diagram illustrating an example of a first subframe within a 5G NR frame structure. Figure 2B FIG230 is a diagram illustrating an example of DL channels within a 5G NR subframe. Figure 2C FIG250 is a diagram illustrating an example of a second subframe within a 5G NR frame structure. Figure 2D FIG280 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD) (wherein for a particular set of subcarriers (carrier system bandwidth), a subframe within the subcarrier set is dedicated to either DL or UL), or may be time division duplex (TDD) (wherein for a particular set of subcarriers (carrier system bandwidth), a subframe within the subcarrier set is dedicated to both DL and UL). Figure 2A , Figure 2C In the example provided, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (most of which are DL), where D is DL, U is UL, and F is flexible between DL / UL, and subframe 3 is configured with slot format 34 (most of which are UL). Although subframes 3 and 4 are shown as having slot formats 34 and 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are full DL and full UL, respectively. Other slot formats 2-61 include a mix of DL, UL and flexible symbols. The UE is configured with the slot format through the received slot format indicator (SFI) (dynamically configured through DL control information (DCI) or semi-statically / statically configured through radio resource control (RRC) signaling). Note that the following description also applies to the 5G NR frame structure as TDD.

[0075] Other wireless communication technologies may have different frame structures and / or different channels. For example, a 10 millisecond (ms) frame may be divided into 10 equally sized subframes (1 ms). Each subframe may include one or more time slots. A subframe may also include a microslot, which may include 7, 4, or 2 symbols. Each time slot may include 7 or 14 symbols, depending on the time slot configuration. For time slot configuration 0, each time slot may include 14 symbols, and for time slot configuration 1, each time slot may include 7 symbols. The symbol on the DL may be a cyclic prefix (CP) orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbol. The symbol on the UL may be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbol (also known as a single carrier frequency division multiple access (SC-FDMA) symbol) (for power-constrained scenarios; limited to single-stream transmission). The number of time slots in a subframe is based on the time slot configuration and parameter set (numerology). For slot configuration 0, different parameter sets μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For slot configuration 1, different parameter sets 0 to 2 allow 2, 4, and 8 slots per subframe, respectively. Thus, for slot configuration 0 and parameter set μ, there are 14 symbols per slot and 2 per subframe. μ time slots. The subcarrier spacing and symbol length / duration are functions of the parameter set. The subcarrier spacing can be equal to 2 μ *15 kilohertz (kHz), where μ is parameter set 0 to 4. Therefore, the subcarrier spacing for parameter set μ=0 is 15 kHz, and the subcarrier spacing for parameter set μ=4 is 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIG. 2A to FIG. 2D An example is provided for slot configuration 0 with 14 symbols per slot and parameter set μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a frame set, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP may have a specific set of parameters.

[0076] A resource grid may be used to represent a frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending over 12 consecutive subcarriers. The resource grid is divided into a plurality of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0077] like Figure 2AAs illustrated, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) for channel estimation at the UE (indicated as R for a particular configuration). x , where 100x is the port number, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS). RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0078] Figure 2B Examples of various DL channels within a subframe of a frame are illustrated. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs), each CCE including nine RE groups (REGs), each REG including four consecutive REs in an OFDM symbol. The PDCCH within a BWP may be referred to as a control resource set (CORESET). Additional BWPs may be located at higher and / or lower frequencies on the channel bandwidth. The primary synchronization signal (PSS) may be within symbol 2 of a particular subframe of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. The secondary synchronization signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identification group number and radio frame timing. Based on the physical layer identification and the physical layer cell identification group number, the UE may determine the physical cell identifier (PCI). Based on the PCI, the UE may determine the position of the aforementioned DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the system frame number (SFN) and the number of RBs in the system bandwidth. The physical downlink shared channel (PDSCH) carries user data, broadcast system information not sent over the PBCH (such as the system information block (SIB)), and paging messages.

[0079] like Figure 2CAs illustrated, some of the REs carry DM-RS (indicated as R for a particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may send a DM-RS for a physical uplink control channel (PUCCH) and a DM-RS for a physical uplink shared channel (PUSCH). The PUSCH DM-RS may be sent in the first or first two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS may be sent in different configurations. The UE may send a sounding reference signal (SRS). The SRS may be sent in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the teeth of the comb. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0080] Figure 2D Examples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), and hybrid automatic repeat request (HARQ) acknowledgement (ACK) / negative acknowledgement (NACK) feedback. The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0081] Figure 33 is a block diagram of a base station 310 in an access network communicating with a UE 350. In the DL, IP packets from the EPC 160 may be provided to one or more controllers / processors 375. The one or more controllers / processors 375 implement layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. One or more controllers / processors 375 provide RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with transfer of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0082] One or more transmit (TX) processors 316 and one or more receive (RX) processors 370 implement layer 1 functionality associated with various signal processing functions. Layer 1 (which includes the physical (PHY) layer) may include error detection on transport channels, forward error correction (FEC) coding / decoding of transport channels, interleaving, rate matching, mapping onto physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. One or more TX processors 316 handle mapping to signal constellations based on various modulation and coding schemes (MCS) (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-order phase shift keying (M-PSK), M-order quadrature amplitude modulation (M-QAM)). The coded and modulated symbols may then be separated into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce a plurality of spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. Channel estimates may be derived from reference signals and / or channel state feedback sent by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX may modulate an RF carrier with a corresponding spatial stream for transmission.

[0083] At the UE 350, each receiver 354RX receives a signal through its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to one or more receive (RX) processors 356. One or more TX processors 368 and one or more RX processors 356 implement layer 1 functionality associated with various signal processing functions. One or more RX processors 356 can perform spatial processing on the information to recover any spatial stream destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined into a single OFDM symbol stream by one or more RX processors 356. Then, one or more RX processors 356 use a fast Fourier transform (FFT) to convert the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier and the reference signal are recovered and demodulated by determining the most likely signal constellation point sent by the base station 310. These soft decisions can be based on channel estimates calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by the base station 310. The data and control signals are then provided to one or more controllers / processors 359 that implement layer 3 and layer 2 functionality.

[0084] The one or more controllers / processors 359 may each be associated with one or more memories 360 that store program codes and data. The one or more memories 360 may be referred to as computer readable media, alone or in any combination. In the UL, the one or more controllers / processors 359 provide demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the EPC 160. The one or more controllers / processors 359 are also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0085] Similar to the functionality described in conjunction with DL transmissions performed by the base station 310, the one or more controllers / processors 359 provide: RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with delivery of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0086] Channel estimates derived by the channel estimator 358 based on a reference signal or feedback sent by the base station 310 may be used by the one or more TX processors 368 to select appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the one or more TX processors 368 may be provided to different antennas 352 via separate transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a corresponding spatial stream for transmission.

[0087] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality at the UE 350. Each receiver 318RX receives a signal through its respective antenna 320. Each receiver 318RX recovers information modulated onto an RF carrier and provides the information to one or more RX processors 370.

[0088] The one or more controllers / processors 375 may each be associated with one or more memories 376 that store program codes and data. The one or more memories 376 may be referred to as computer-readable media, either alone or in any combination. In the UL, the one or more controllers / processors 375 provide demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets from the UE 350. The IP packets from the one or more controllers / processors 375 may be provided to the EPC 160. The one or more controllers / processors 375 are also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0089] At least one of the one or more TX processors 368, the one or more RX processors 356, and the one or more controllers / processors 359 may be configured to perform a combined Figure 1A Various aspects of the CSI subband report sending component 198.

[0090] At least one of the one or more TX processors 316, the one or more RX processors 370, and the one or more controllers / processors 375 may be configured to perform a combined Figure 1A Aspects of the CSI subband report receiving component 199.

[0091] TDD deployment and FDD deployment can be half-duplex or full-duplex. In half-duplex communication, the base station or UE can send and receive data at different times but not at the same time. In contrast, in full-duplex communication, the base station or UE can send and receive data at the same time.

[0092] FIG. 4A to FIG. 4C Examples 400, 420, 440 of full-duplex communications are illustrated. Figure 4A and Figure 4B Refers to different examples of In-Band Full Duplex (IBFD), where a base station or a UE can send and receive data in at least part of the same frequency resources (or all of the same frequency resources). Figure 4A In the example 400, the uplink frequency resource 402 may completely overlap with the downlink frequency resource 404, while Figure 4B In example 420, uplink frequency resources 422 may partially overlap with downlink frequency resources 424. Figure 4C Another example of full-duplex communication is illustrated, namely sub-band FDD (SBFD, also known as flexible duplex), in which a base station or UE can send and receive data in different frequency resources. Figure 4C In example 440, uplink frequency resources 442 and downlink frequency resources 444 may be separated by a guard band 446 in the frequency domain to minimize interference between the uplink frequency resources and the downlink frequency resources.

[0093] FIG. 5A to FIG. 5C Different examples 500, 530, 560 of full-duplex scenarios (eg, SBFD or IBFD) are illustrated. Figure 5AIn example 500 of FIG. 5 , a base station 502 capable of full-duplex communication can receive an uplink transmission 504 from a first UE 506 while providing a downlink transmission 508 to a second UE 510. In this example, the first UE and the second UE may not be capable of full-duplex communication (e.g., they are half-duplex UEs). This scenario may result in self-interference (SI) 512 at the base station 502, cross-link interference (CLI) 514 between the base station 502 and a neighboring base station 516, and CLI 518 between the first UE 506 and the second UE 510. In order to minimize this interference, SBFD 519 can be applied, in which uplink frequency resources 520 used for uplink transmissions 504 are separated from downlink frequency resources 522 used for downlink transmissions 508 in a frequency band 524 (e.g., component carrier (CC) bandwidth) and a time slot 526.

[0094] Although in Figure 5A In the example of , the first UE 506 and the second UE 510 operate in half-duplex mode (eg, these UEs are not capable of full-duplex communication), but in other examples, these UEs may be capable of full-duplex communication. Figure 5B In example 530, a base station 532 capable of full-duplex communication (similar to base station 502) can receive uplink transmissions 534 from UE 536 while the base station provides downlink transmissions 538 to UE 536. Similarly, in Figure 5C In example 560, base station 562 or a first transmit receive point (TRP) may receive an uplink transmission 564 from UE 566 while UE 566 is receiving a downlink transmission 568 from a neighboring base station 570 or a second TRP.

[0095] exist Figure 5B and Figure 5C In the illustrated example, different examples of IBFD can be applied to uplink and downlink communications. Figure 5B As illustrated in example 530 of , IBFD 540 may be applied where uplink frequency resources 542 used for uplink transmission 534 partially overlap downlink frequency resources 544 used for downlink transmission 538. Similarly, Figure 5C As illustrated in example 560 of , IBFD 572 may be applied where uplink frequency resources 574 used for uplink transmission 564 may partially overlap with downlink frequency resources 576 used for downlink transmission 568.

[0096] Although FIG. 5A to FIG. 5C The examples of respectively apply SBFD, one example of IBFD (partial overlap), and another example of IBFD (partial overlap), but these examples are not limited to such full-duplex scenarios. Figure 5A In the example of Figure 5B In the example or Figure 5C SBFD is alternatively applied in the example of .

[0097] Therefore, a half-duplex or full-duplex UE can use SBFD or IBFD to communicate with a full-duplex base station. FIG. 5A to FIG. 5C As illustrated in , the downlink frequency resources and the uplink frequency resources may occupy different sub-bands of a frequency band (eg, frequency band 524). Figure 5A and Figure 5B In the example of , an uplink subband including uplink frequency resources 520, 542 may separate multiple downlink subbands including downlink frequency resources 522, 544. To enhance communication in such scenarios, it would be helpful for these UEs to apply CSI measurement and reporting in such subbands. However, conventional CSI configurations do not address CSI subband reporting in conjunction with full-duplex communication.

[0098] Currently, the base station may configure the UE to provide a wideband CSI report or a subband CSI report. For example, the base station may provide a CSI report configuration indicating a wideband report granularity or a subband report granularity. In a wideband CSI report, the UE may provide a report indicating the CSI (e.g., CQI or PMI) associated with the CSI measurement resources for the entire frequency band. In a subband CSI report, the UE may provide reports indicating the CSI (e.g., CQI or PMI) associated with the CSI measurement resources for the corresponding subbands of the frequency band, respectively. These subbands are referred to as CSI subbands throughout this disclosure, and the corresponding CSI subbands include multiple consecutive PRBs.

[0099] In subband CSI reporting, the granularity of the CSI subband (subband size) is related to the size of the BWP that includes the CSI subband. Currently, different subband sizes are defined based on the BWP size so that the maximum number of CSI subbands does not exceed 19. These subband sizes are also defined to be compatible with the typical granularity (integer multiples) of precoding (PRB size, typically 2 or 4 PRBs) and frequency allocation (resource block group (RBG) size) associated with PDSCH to avoid misalignment. Examples of various subband sizes that can be configured for different ranges of BWP sizes are shown in Table 1, where for CSI reporting, depending on the total number of PRBs in the BWP, the UE can be configured with one of two possible subband sizes via higher layer signaling:

[0100] BWP(PRB) Subband size (PRB) 24–72 4、8 73–144 8、16 145–275 16、32

[0101] Table 1 - Configurable subband sizes

[0102] The frequency domain resource assignment (FDRA) for CSI measurement resources in PDSCH (and for uplink data in PUSCH) can be allocated in two different ways. In one type of resource allocation, referred to as type 1 resource allocation, the base station allocates contiguous RBs indicated in the resource indicator value (RIV). In another type of resource allocation, referred to as type 0 resource allocation, the base station configures a bitmap that defines frequency resources based on the RBG size. Examples of various RBG sizes that can be configured for different ranges of BWP sizes are shown in Table 2, where the UE can be configured with one of two possible RBG sizes depending on the BWP size and the configuration type (1 or 2). A comparison of Table 1 and Table 2 can show that the CSI subband size is a multiple of the associated RBG size.

[0103] BWP size (PRB) Configuration 1 Configuration 2 1–36 2 4 37–72 4 8 73–144 8 16 144–275 16 16

[0104] Table 2 - Nominal RBG sizes

[0105] Figure 6 An example 600 of frequency resource allocation for downlink transmission is illustrated. Although the illustrated example shows that frequency resources 602 are defined according to PRBs, in an alternative example, frequency resource allocation can be defined according to RBGs. Figure 5A Frequency resources 602 are allocated in a BWP 604 of a frequency band 524 of a component carrier 606, and CSI subbands 608 of a specific subband size are respectively defined according to a continuous number of frequency resources 602 based on the size of the BWP 604. In order to maintain alignment between the FDRA and the subband CSI reporting, both the frequency resources 602 (e.g., PRBs or RBGs) and the CSI subbands 608 are defined relative to a reference resource block 610 for the component carrier 606 rather than relative to an initial resource block for the BWP 604. Therefore, the BWP 604 may include a CSI subband with a size smaller than the configured subband size at either or both edges of the BWP, which CSI subband is referred to as an edge CSI subband 612 throughout the present disclosure.

[0106] The UE may report CSI for CSI subbands 608 separately within a CSI reporting band 614. The CSI reporting configuration indicates the CSI reporting band 614, which in turn indicates the defined CSI subbands to be included in the CSI report. For example, the CSI reporting configuration may indicate the number of CSI subbands (with the parameter csi-ReportingBand or some other name). Currently, the configurable number ranges from at least three CSI subbands to at most nineteen CSI subbands, which corresponds to the maximum number of CSI subbands that may be reported. For a configured number of CSI subbands, a bitmap defines which of the CSI subbands 608 are part of the CSI reporting band 614, where a value of '1' indicates that the CSI subband is part of the CSI reporting band, and a value of '0' indicates that the CSI subband is excluded from the CSI reporting band (or vice versa). For example, in Figure 6 In example 600, the CSI reporting configuration utilizes bitmap '01110' (value of subbands5) to indicate the number of five CSI subbands (via parameter subbands5 in csi-ReportingBand or another name) to indicate that the UE will report CQI or PMI for each of the middle three CSI subbands (CSI subbands in CSI reporting band 614), but not for the two outermost CSI subbands.

[0107] Although conventional CSI reporting configurations provide aligned FDRA and sub-band CSI reporting in half-duplex scenarios, it would be helpful to extend these configurations to full-duplex scenarios (e.g., SBFD or IBFD) that include multiple downlink subbands separated by uplink subbands. In one approach, a single BWP that spans multiple downlink subbands can be activated (e.g., downlink subbands are defined based on configured RB sets). In another approach, multiple BWPs that are respectively mapped to different downlink subbands can be activated (e.g., downlink subbands are defined based on BWPs). Here, the corresponding downlink subband may include one RB or a set of consecutive RBs.

[0108] Figure 7 An example 700 of the aforementioned different methods for frequency resource allocation in SBFD is illustrated. In one example, a single BWP 702 may be configured or activated to span multiple downlink subbands 704. In this example, an uplink subband 706 that separates the downlink subbands 704 may be included in the single BWP 702. In another example, multiple BWPs may be configured or activated to span multiple downlink subbands 704, respectively. For example, a first BWP 708 may span one of the downlink subbands 704, and a second BWP 710 may span another of the downlink subbands 704. In this example, the uplink subband 706 may not be included in the active BWP.

[0109] For full-duplex scenarios, it would be helpful to define the frequency domain granularity of such downlink subbands in terms of RBG (for type 0 resource allocation) or PRB (for type 1 resource allocation) because the subband CSI report can depend on the granularity of the downlink subband. In one approach, a full-duplex slot or symbol may be configured with the same RBG or PRB resource allocation as a half-duplex slot or symbol. In this case, in order to distinguish the FDRA for the two types of duplex modes, the FDRA for the half-duplex slot or symbol may be interpreted differently from the FDRA for the full-duplex slot or symbol (e.g., the UE may interpret the bitmap in the type 0 resource allocation differently between the two duplex modes). In another approach, a full-duplex slot or symbol may be configured with a different RBG or PRB resource allocation than that of a half-duplex slot or symbol. In yet another approach, different downlink subbands of a frequency band may be configured with different RBG or PRB resource allocations.

[0110] Additionally, it would be helpful to define CSI subbands in conjunction with SBFD or other full-duplex scenarios. For example, CSI subbands of a specific subband size may be defined relative to a reference resource block of a component carrier to maintain alignment with FDRA. However, such a definition of CSI subbands may result in full or partial overlap with an uplink subband or guard band, resulting in edge CSI subbands overlapping with downlink subbands. Due to the smaller size of the edge subband relative to the configured CSI subband size, the edge CSI subband may result in inaccurate channel estimates for subband CSI reporting. For example, even though the channel quality between a CSI subband and an edge CSI subband may not be significantly different, due to the shorter channel averaging in the edge CSI subband, the UE may still determine a different CQI for a smaller edge CSI subband than for other larger CSI subbands. Therefore, it would be helpful to define how to manage such edge CSI subbands and to manage the guard band and CSI subband granularity based on the downlink subband granularity.

[0111] Figure 8 An example 800 of allocation of frequency resources 802 for SBFD is illustrated. Figure 6 In the example 600 of FIG. 8 , CSI subbands 804 of a specific subband size are respectively defined according to a continuous number of frequency resources 802. In addition, similar to Figure 7In the example 700 of FIG. 1 , multiple downlink subbands 806, uplink subbands 808 separating the downlink subbands 806, and guard bands 810 separating the respective downlink subbands from the uplink subbands 808 may be allocated in SBFD. Thus, the CSI subband 804 may overlap with the uplink subband 808 and the guard band 810, resulting in an edge CSI subband 812 having a size smaller than the CSI subband 804. Thus, in SBFD or other full-duplex scenarios, it would at least be helpful to define how to manage the frequency domain granularity of the edge CSI subbands 812, the guard bands 810, and the CSI subbands 804.

[0112] In one aspect, CSI subbands may be defined in a variety of ways based on an associated FDRA (e.g., CSI-RS bandwidth) for a full-duplex time slot that includes a downlink subband, an uplink subband, and a guard band. In a first example, CSI subbands included in (overlapping with) uplink subbands and guard bands are deactivated in a CSI reporting configuration. In a second example, CSI subbands that partially overlap with uplink subbands and guard bands remain activated in the CSI reporting configuration, but may be handled in various ways for CSI reporting. For example, in a first example, a CSI reporting configuration may indicate that CSI subbands that overlap with uplink subbands and guard bands are not part of a CSI reporting band (e.g., via a bit '0' in the associated subband parameter in csi-ReportingBand), thereby limiting CSI reporting to only CSI subbands that overlap with downlink subbands. In contrast, in the second example, the CSI reporting configuration may still indicate that these overlapping CSI subbands are part of the CSI reporting band (e.g., via bit '1' in the relevant subband parameters in csi-ReportingBand), and therefore the CSI report is not restricted as in the first example, but here the UE may suppress including these activated CSI subbands in its CSI report according to various options.

[0113] In a first option of the second example, the UE may completely discard such overlapping CSI subbands from the CSI report. In a second option of the second example, the UE may not completely discard such CSI subbands from the CSI report, but the UE may truncate such CSI subbands to form edge CSI subbands and include these edge CSI subbands in the CSI report. In one example of this truncation, as a result of the truncation, the UE may form edge CSI subbands that overlap only with the downlink subband. In another example of this truncation, as a result of the truncation, the UE may form edge CSI subbands that overlap both the downlink subband and the guard band. Such edge CSI subbands overlapping the guard band may allow the UE to perform interference measurements on CSI-IM in the guard band.

[0114] Fig. 9 An example 900 of allocation of frequency resources 902 for SBFD is illustrated. Figure 8 In the example 800 in FIG. 8 , CSI subbands 904 of a specific subband size are respectively defined according to a continuous number of frequency resources 902, and a plurality of downlink subbands 906, an uplink subband 908 separating the downlink subbands 906, and a guard band 910 separating the corresponding downlink subband from the uplink subband 908 may be allocated in the SBFD. Therefore, the CSI subband 904 may overlap with the uplink subband 908 and the guard band 910. In a first example 911 of this case, the base station may ignore the entire CSI subband 912 that overlaps with the uplink subband 908 and the guard band 910, whether completely or partially, in the CSI report configuration. Therefore, the definition of the CSI subband may be limited to the CSI subbands that completely overlap with the downlink subband 906; these CSI subbands may not even partially overlap with the uplink subband 908 or the guard band 910. In a second example of this situation, the base station may include overlapping CSI subbands in the CSI reporting configuration, but the UE may suppress the application of these CSI subbands in its CSI report according to various options. In a first option of this second example (referred to as example 913), the UE may be configured to drop the entire CSI subband 912 from its CSI report. Therefore, in the first example or the first option of the second example, because the entire CSI subband 912 is ignored due to the overlap, the edge CSI subbands (such as the middle of the BWP or between multiple BWPs) are not included. Figure 8 In contrast, edge CSI subbands at the beginning or end of a BWP (such as Figure 6 In the second option of the second example, the UE may be configured to truncate the CSI subband 904 partially overlapping the uplink subband 908 and the guard band 910 to form an edge CSI subband 916, and include the edge CSI subband 916 in its CSI report. In an example 914 of the second option, the edge CSI subband 916 may overlap only the downlink subband 906. In another example 915 of the second option, the edge CSI subband 916 may overlap both the downlink subband 906 and the guard band 910.

[0115] On the other hand, the frequency domain granularity of the CSI subband can be defined in a variety of ways for a full-duplex time slot (e.g., a SBFD time slot). In a first example, the granularity of the CSI subband for a full-duplex time slot may depend on the BWP size. For example, the granularity of the CSI subband may be a multiple of the PDSCH precoding granularity (e.g., 2 or 4 PRBs) and the PDSCH frequency resource allocation granularity (e.g., 2, 4, 8 or 16 RBGs, depending on the BWP size), so that up to 19 subbands can be configured. In one option for the first example, the downlink subband in the full-duplex time slot may be defined as a corresponding RB set, and thus a single BWP may contain multiple downlink subbands. In this option, the size of the corresponding downlink subband may not affect the CSI subband granularity, because only the BWP size is a relevant factor. In another option for the first example, the corresponding downlink subband in the full-duplex time slot may be defined in different active BWPs. Here, the BWP may have different sizes and correspond to a single downlink subband, respectively. In this option, the CSI subband granularity associated with multiple active BWPs respectively may be different. Thus, different downlink subbands may be associated with different frequency domain granularities for subband CSI reporting, and a single CSI report may include CSI associated with CSI subbands of different frequency domain granularities for different BWP sizes.

[0116] In a second example, the granularity of the CSI subbands for a full-duplex timeslot may depend not only on the size of the BWP, but also on the size of the downlink subbands in the BWP. In one example, the downlink subbands of a full-duplex timeslot may be defined separately by a set of RBs within a single active BWP, in which case the CSI subbands that overlap with the uplink subbands and guard subbands of the full-duplex timeslot may be ignored (e.g., only CSI subbands that span downlink subbands are included in the CSI report). In this case, the CSI subband granularity may be based on the aggregate size of multiple downlink subbands, thereby allowing the network to support finer frequency domain granularity while maintaining a limit of no more than 19 for the CSI subbands.

[0117] Fig.10 is an example 1000 of an allocation of frequency resources 1002 for SBFD. Fig. 9In the example 900 in FIG. 1 , CSI subbands 1004 of a specific subband size in a BWP 1005 may be respectively defined according to a continuous number of frequency resources 1002, and a plurality of downlink subbands 1006, an uplink subband 1008 separating the downlink subbands 1006, and a guard band 1010 separating the corresponding downlink subbands from the uplink subbands 1008 may be allocated in the SBFD. In one example 1011, the granularity or size of the CSI subbands 1004 may be defined based on the size of the BWP 1005. For example, if the size of the BWP 1005 is 160 PRBs, the granularity of the corresponding CSI subbands in the entire BWP may be 16 RBs or 32 RBs according to Table 1 above. Therefore, in FIG. Fig.10 In the example 1011 illustrated in , one example of a CSI subband size may be 16 RBs regardless of the corresponding size of the downlink subband 1006. In another example 1012, the granularity or size of the CSI subband 1004 may be further defined based on the size of the downlink subband 1006 and the size of the BWP 1005. Thus, in this example, the size of the uplink subband 1008 and the size of the guard band 1010 may be excluded from the subband size determination. For example, in Fig.10 In the example 1012 illustrated in FIG. 1 , where the size of the BWP 1005 is 160 PRBs, here, the aggregate size of the multiple downlink subbands 1006 in the BWP 1005 may be 104 PRBs (13*8 RBs), and thus according to Table 1 above, the granularity of the corresponding CSI subbands that overlap only with the downlink subband 1006 may be 8 RBs or 16 RBs. Fig.10 In the example 1012 illustrated in , another example of the CSI subband size may be 8 RBs based on the aggregate size of the downlink subband 1006. Thus, if the downlink subband size is considered a factor in the subband size determination, a finer CSI subband granularity may be obtained (e.g., 8 RBs in example 1012 vs. 16 RBs in example 1011). In either example, whether a coarser or finer granularity is obtained for the CSI subband.

[0118] In another aspect, different frequency domain granularities may be defined for CSI subbands associated with different slot types or duplex modes (e.g., full-duplex slots, half-duplex slots, or slots including full-duplex symbols and half-duplex symbols). As previously described, the frequency domain granularity of a downlink subband may be defined in one of a number of ways based on RBGs or PRBs. For example, a full-duplex slot or symbol may be configured with the same RBG or PRB resource allocation as a half-duplex slot or symbol, a full-duplex slot or symbol may be configured with a different RBG or PRB resource allocation than that of a half-duplex slot or symbol, or different downlink subbands of a frequency band may be configured with different RBG or PRB resource allocations. In any of the foregoing examples, the CSI subband size may be aligned with (a multiple of) the RBG size associated with the full-duplex slot or symbol. For example, the base station may configure different RBG resource allocations between full-duplex time slots and half-duplex time slots, such that the RBG size for full-duplex is 4 and the RBG size for half-duplex is 8, and thus if the BWP size is 72 PRBs, the CSI subband size in the full-duplex time slot may be configured as a multiple of the RBG size = 4, while the CSI subband size in the half-duplex time slot may be configured as a multiple of the RBG size = 8.

[0119] Therefore, the CSI subband size can be configured to depend on the duplex mode of the associated time slot or symbol, so that different CSI subband granularities can exist for half-duplex time slots (or symbols) and full-duplex time slots (or symbols), respectively. In one method, the CSI report configuration can indicate multiple subband sizes for half-duplex and full-duplex, respectively, and the multiple subband sizes can be based on the RBG sizes associated with the corresponding duplex modes, respectively. For example, in the aforementioned example where the RBG size for full-duplex is 4 and the RBG size for half-duplex is 8, the base station can configure the CSI report configuration using one subband size from Table 1 above (for full-duplex time slots or symbols, the subband size is a multiple of 4) and another subband size from Table 1 above (for half-duplex time slots or symbols, the subband size is a multiple of 8). The half-duplex subband size may be indicated in the CSI reporting configuration via the parameter CSI-subband-size-HD or another name, and the full-duplex subband size may be indicated in the CSI reporting configuration via the parameter CSI-subband-size-FD or another name. The UE may then select which of the two indicated subband sizes (e.g., CSI-subband-size-HD or CSI-subband-size-FD) to use depending on the duplex mode of the slot or symbol associated with the CSI report.

[0120] Fig.111100 is an example of a downlink and uplink time slot format ('D+U' time slot). A 'D+U' time slot is a time slot in which the frequency band is used for both uplink transmission and downlink transmission, and in which the downlink transmission and uplink transmission can occur in overlapping bands (IBFD) or adjacent bands (SBFD). For example, in Fig.11 In the illustrated example, the 'D+U' time slot may include multiple downlink subbands 1102 and uplink subbands 1104. The 'D+U' time slot may contain only downlink symbols, only uplink symbols, or full-duplex symbols. In addition, in a given 'D+U' time slot, a half-duplex UE may send data in the uplink subband 1104 or receive data in one of the downlink subbands 1102 (but not both in the downlink and uplink at the same time), while a full-duplex UE may send data in the uplink subband 1104 and / or receive data in one of the downlink subbands 1102. In the periodic or semi-persistent case, the 'D+U' time slot may be before or after another 'D+U' time slot (full-duplex time slot) or half-duplex time slot. For example, in Fig.11 In the illustrated example, the downlink time slot 1106 may be before the 'D+U' time slot 1108, and the uplink time slot 1110 may be after the 'D+U' time slot 1108. Therefore, in order to align the CSI subband size with the corresponding RBG size or PRB size in the time slots associated with different duplex modes, the base station may indicate multiple subband sizes for half-duplex and full-duplex, respectively, in the CSI reporting configuration, and the UE may apply one of these subband sizes according to the applicable duplex mode. For example, if the CSI to be reported is based on the CSI-RS received in the downlink time slot 1106, the UE may apply the half-duplex subband size indicated in the CSI reporting configuration to the CSI subband. In contrast, if the CSI to be reported is based on the CSI-RS received in the 'D+U' time slot 1108, the UE may instead apply the full-duplex subband size indicated in the CSI reporting configuration to the CSI subband.

[0121] In an additional aspect, the reference resource blocks (PRBs) indicating the initial reference points of the CSI subbands may be defined differently for full-duplex scenarios. As previously described, the PRBs, RBGs, and CSI subbands in a half-duplex slot may be defined relative to the reference resource blocks for the component carriers rather than relative to the initial resource blocks for the BWP. Thus, in a first example, the CSI subbands in a full-duplex slot (including multiple downlink subbands and uplink subbands separating the downlink subbands) may be similarly defined relative to the reference resource blocks in the component carriers. That is, the initial reference points of the CSI subbands may be aligned with the initial PRBs of the component carriers rather than with the initial PRBs of the BWP. However, since the UE ignores the CSI subbands that overlap with such uplink subbands as previously described, such definition of the CSI subbands may result in the formation of edge CSI subbands (with smaller subband sizes) at the edges of the downlink subbands and at the edges of the BWP. These edge CSI subbands may result in lower CSI accuracy in the CSI report due to their smaller subband sizes relative to other CSI subbands.

[0122] Therefore, in order to reduce the number of edge CSI subbands, in a second example, CSI subbands associated with different downlink subbands in such a full-duplex time slot may be defined relative to different initial reference blocks. For example, a first group of CSI subbands overlapping a first downlink subband may be defined relative to a first reference resource block, and a second group of CSI subbands overlapping a second downlink subband may be defined relative to a second reference resource block. The first reference resource block may be defined as a reference resource block of a component carrier, and thus the first group of CSI subbands may be defined to be aligned with an FDRA (e.g., an allocated PRB or RBG) of a full-duplex time slot, as described above. However, the second reference resource block may be defined as an initial resource block of a second downlink subband, and thus the second group of CSI subbands may be defined based on the different reference resource blocks using different timing than the first group of CSI subbands. Therefore, fewer edge CSI subbands may be generated in this example, thereby improving the accuracy of CSI reporting or channel estimation.

[0123] Fig.12 An example 1200 of allocating frequency resources 1202 for SBFD is illustrated. Fig.10In the example 1000 in FIG. 1 , CSI subbands 1204 in a BWP 1205 may be respectively defined according to a continuous number of frequency resources 1202, and a plurality of downlink subbands 1206, uplink subbands 1208 separating the downlink subbands 1206, and guard bands 1210 separating the respective downlink subbands from the uplink subbands 1208 may be allocated in the SBFD. In this example, the CSI subbands 1204 may be defined relative to a reference resource block 1212 for a component carrier including the BWP 1205 to maintain alignment with or be a multiple of the PDSCH precoding granularity (PRB size) and the FDRA granularity (RBG size). Thus, a maximum of four CSI subbands in the CSI subbands 1204 may be formed as edge CSI subbands 1214, such as Fig.12 exemplified in the example.

[0124] Fig.13 An example 1300 of allocation of frequency resources 1302 for SBFD is illustrated. Fig.10 In the example 1000 in FIG. 1 , CSI subbands 1304 in a BWP 1305 may be respectively defined according to a continuous number of frequency resources 1302, and a plurality of downlink subbands 1306, an uplink subband 1308 separating the downlink subbands 1306, and a guard band 1310 separating the respective downlink subbands from the uplink subbands 1308 may be allocated in the SBFD. In this example, the CSI subbands 1304 associated with the respective downlink subbands may be placed into groups 1312, 1313 and defined with respect to different reference resource blocks. For example, a first group associated with one downlink subband in group 1312 may be defined with respect to a reference resource block 1314 (a starting RB of a component carrier), as described above, while a second group associated with another downlink subband in group 1313 may be defined with respect to a second reference resource block 1316 at the starting RB of the downlink subband. Therefore, due to the use of the second reference resource block (different reference starting point), a lower maximum number (ie, three) of edge CSI subbands 1318 may be formed, such as Fig.13As illustrated in the second example of . In addition, the reference resource block applied may depend on the duplex mode of the time slot associated with the CSI report. For example, in a half-duplex time slot or in a lower downlink subband of a full-duplex time slot, reference resource block 1314 may be applied, and in an upper downlink subband of a full-duplex time slot, a second reference resource block 1316 may be additionally applied. In addition, the reference points for PDSCH precoding (in units of PRBs) and FDRA (in units of RBGs) for the upper and lower link subbands may be defined separately from the corresponding reference points for PDSCH precoding and FDRA for the lower and lower link subbands, respectively. Therefore, the first group of CSI subbands and the second group of CSI subbands may be individually aligned with their own corresponding PDSCH precoding and FDRA granularity.

[0125] Fig.14 1400 is a diagram illustrating a call flow between a UE 1402 and a base station 1404. First, the base station 1404 may send a CSI reporting configuration 1406 to the UE 1402. The CSI reporting configuration 1406 may configure the UE 1402 to provide a CSI report including corresponding CSI for a CSI subband 1408. The CSI subband 1408 may be associated with a downlink subband of a frequency band in a full-duplex time slot. The CSI reporting configuration 1406 may further indicate a granularity 1410 (or subband size) of the CSI subband 1408. For example, the granularity may be based on the size of the BWP including the CSI subband and based on the size of the downlink subband associated with the CSI subband. The CSI reporting configuration 1406 may indicate a duplex mode 1412 associated with the CSI report, for example, the CSI report will include CSI from a time instance corresponding to a half-duplex time slot or a full-duplex time slot. The CSI report configuration 1406 may additionally indicate a half-duplex subband size 1414 and a full-duplex subband size 1416 for CSI subbands associated with different duplex modes. After sending the CSI report configuration 1406, the base station 1404 may send a CSI-RS 1418 to the UE in a full-duplex time slot, and after receiving the CSI-RS 1418, the UE may send a CSI report 1420 including CSI 1422 for downlink subbands (and in some cases, guard bands) in the full-duplex time slot. The CSI report may also lack CSI 1422 for uplink subbands (and in some cases, guard bands) in the full-duplex time slot.

[0126] Fig.151500 is a flow chart of a method of wireless communication. The method may be performed by a UE (eg, UE 104, 350, 1402; device 1702). The method allows the UE to provide sub-band CSI reporting in a full-duplex time slot.

[0127] At 1502, the UE may receive a CSI reporting configuration indicating a plurality of CSI subbands for at least one BWP. For example, 1502 may be performed by configuration component 1740. For example, referring to Fig.14 , UE 1402 may receive CSI reporting configuration 1406 from base station 1404. CSI reporting configuration 1406 may indicate CSI subband 1408 (e.g., CSI subband 608, 804, 904, 916, 1004, 1204, 1214, 1304, 1318) for subband CSI reporting. CSI subband 1408 may belong to at least one BWP (e.g., BWP 604, 702, 708, 710, 1005, 1205, 1305).

[0128] At 1504, the UE may receive a CSI-RS in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband. For example, 1504 may be performed by reference signal component 1742. For example, reference signal component 1742 may be used to receive a CSI-RS in a time slot associated with a full-duplex mode. Fig.11 and Fig.14 , UE 1402 may receive CSI-RS 1418 from base station 1404 in 'D+U' time slot 1108. The full-duplex time slot may be associated with a frequency band (e.g., frequency band 524, component carrier 606) including downlink subbands 704, 806, 906, 1006, 1102, 1206, 1306 and uplink subbands 706, 808, 908, 1008, 1104, 1208, 1308).

[0129] At 1506, the UE may send a CSI report, wherein the CSI report includes a first CSI associated with a CSI-RS for a first CSI subband in the CSI subbands that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subbands that overlaps in frequency with the uplink subband. For example, 1506 may be performed by reporting component 1744. For example, referring to Fig.14, the UE 1402 may send a CSI report 1420 to the base station 1404. The CSI report 1420 may include CSI 1422 associated with the CSI-RS 1418 for the CSI subbands 904, 1408 overlapping the downlink subbands 704, 806, 906, 1006, 1102, 1206, 1306 (the first CSI in this example). The CSI report 1420 may lack CSI 1422 for the CSI subbands 912, 1408 overlapping the uplink subbands 706, 808, 908, 1008, 1104, 1208, 1308 (the second CSI in this example).

[0130] In one example, a second CSI subband in the CSI subbands (eg, CSI subband 912 in example 911) overlaps in frequency with an uplink subband and a guard band between the downlink subband and the uplink subband.

[0131] In one example, the CSI report also lacks a third CSI for a third CSI subband in the CSI subband that partially overlaps in frequency with the uplink subband or the guard band between the downlink subband and the uplink subband (e.g., CSI subband 912 in example 913).

[0132] In one example, a third CSI subband in the CSI subbands (e.g., CSI subband 912 in Example 914) partially overlaps in frequency with an uplink subband or a guard band between a downlink subband and an uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subbands that overlaps with the downlink subband (e.g., edge CSI subband 916 in Example 914).

[0133] In one example, a third CSI subband in the CSI subbands (e.g., CSI subband 912 in Example 915) partially overlaps in frequency with an uplink subband or a guard band between a downlink subband and an uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subbands that overlaps with the downlink subband and the guard band (e.g., edge CSI subband 916 in Example 915).

[0134] In one example, the granularity of a CSI subband (eg, CSI subband 1004 in example 1011) is based on the BWP size.

[0135] In one example, the at least one BWP includes a single active BWP (eg, BWP 1005) in the frequency band, and the BWP size is the size of the single active BWP.

[0136] In one example, at least one BWP includes a first active BWP (e.g., first BWP 708) and a second active BWP (e.g., second BWP 710) in a frequency band, a first group of CSI subbands (e.g., CSI subband 1004 in first group 1312) is within the first active BWP, a second group of CSI subbands (e.g., CSI subband 1004 in second group 1313) is within the second active BWP, a granularity of the first group of CSI subbands is based on a first BWP size of the first active BWP, a granularity of the second group of CSI subbands is based on a second BWP size of the second active BWP, and the second BWP size is different from the first BWP size.

[0137] In one example, the granularity of a CSI subband (eg, CSI subband 1004) is also based on the downlink subband size.

[0138] In one example, at least one BWP includes a single active BWP (e.g., BWP 1005) in a frequency band that includes a second downlink subband (e.g., downlink subband 1006), and the granularity of the CSI subband (e.g., CSI subband 1004 in Example 1012) is based on an aggregate size of the downlink subband and the second downlink subband.

[0139] In one example, the granularity of the CSI subband is based on the duplex mode of the CSI report (eg, the duplex mode 1412 or the association of the CSI report with the CSI-RS in the 'D+U' slot 1108).

[0140] In one example, the CSI reporting configuration indicates a half-duplex subband size (e.g., for subband CSI reporting in downlink timeslot 1106) and a full-duplex subband size (e.g., for subband CSI reporting in 'D+U' timeslot 1108), and based on the duplex mode being full-duplex mode (e.g., duplex mode 1412 or the association of the CSI report with the CSI-RS in 'D+U' timeslot 1108), the granularity of the CSI subband is the full-duplex subband size.

[0141] In one example, an initial resource block for a CSI subband (eg, a starting point of CSI subband 1204) is based on a reference resource block (eg, reference resource block 1212) associated with a component carrier including at least one BWP.

[0142] In one example, the frequency band includes a second downlink subband, a first group of CSI subbands (e.g., first group 1312) overlaps with the downlink subband, a second group of CSI subbands (e.g., second group 1313) overlaps with the second downlink subband, a first initial resource block for the first group of CSI subbands (e.g., a starting point of the first group 1312) is based on a reference resource block (e.g., reference resource block 1314) associated with a component carrier including at least one BWP, and a second initial resource block for the second group of CSI subbands (e.g., a starting point of the second group 1313) is based on a different reference resource block (e.g., reference resource block 1316).

[0143] Fig.16 1600 is a flow chart of a method of wireless communication. The method may be performed by a network entity such as a base station (e.g., base station 102 / 180, 310, 1404; decomposed base station 181; device 1802). The method allows the base station to configure and receive sub-band CSI reports in a full-duplex time slot.

[0144] At 1602, a base station may send a CSI report configuration indicating a plurality of CSI subbands for at least one BWP. For example, 1602 may be performed by configuration component 1840. For example, referring to Fig.14 , UE 1402 may receive CSI reporting configuration 1406 from base station 1404. CSI reporting configuration 1406 may indicate CSI subband 1408 (e.g., CSI subband 608, 804, 904, 916, 1004, 1204, 1214, 1304, 1318) for subband CSI reporting. CSI subband 1408 may belong to at least one BWP (e.g., BWP 604, 702, 708, 710, 1005, 1205, 1305).

[0145] At 1604, the base station may transmit a CSI-RS in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband. For example, 1604 may be performed by a reference signal component 1842. For example, reference Fig.11 and Fig.14 , UE 1402 may receive CSI-RS 1418 from base station 1404 in 'D+U' time slot 1108. The full-duplex time slot may be associated with a frequency band (e.g., frequency band 524, component carrier 606) including downlink subbands 704, 806, 906, 1006, 1102, 1206, 1306 and uplink subbands 706, 808, 908, 1008, 1104, 1208, 1308).

[0146] At 1606, the base station may receive a CSI report, wherein the CSI report includes a first CSI associated with a CSI-RS for a first CSI subband in the CSI subbands that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subbands that overlaps in frequency with the uplink subband. For example, 1606 may be performed by reporting component 1844. For example, referring to Fig.14 , the UE 1402 may send a CSI report 1420 to the base station 1404. The CSI report 1420 may include CSI 1422 associated with the CSI-RS 1418 for the CSI subband 1408 overlapping the downlink subbands 704, 806, 906, 1006, 1102, 1206, 1306 (the first CSI in this example). The CSI report 1420 may lack CSI 1422 for the CSI subbands 912, 1408 overlapping the uplink subbands 706, 808, 908, 1008, 1104, 1208, 1308 (the second CSI in this example).

[0147] In one example, a second CSI subband in the CSI subbands (eg, CSI subband 912 in example 911) overlaps in frequency with an uplink subband and a guard band between the downlink subband and the uplink subband.

[0148] In one example, the CSI report also lacks a third CSI for a third CSI subband in the CSI subband that partially overlaps in frequency with the uplink subband or the guard band between the downlink subband and the uplink subband (e.g., CSI subband 912 in example 913).

[0149] In one example, a third CSI subband in the CSI subbands (e.g., CSI subband 912 in Example 914) partially overlaps in frequency with an uplink subband or a guard band between a downlink subband and an uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subbands that overlaps with the downlink subband (e.g., edge CSI subband 916 in Example 914).

[0150] In one example, a third CSI subband in the CSI subbands (e.g., CSI subband 912 in Example 915) partially overlaps in frequency with an uplink subband or a guard band between a downlink subband and an uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subbands that overlaps with the downlink subband and the guard band (e.g., edge CSI subband 916 in Example 915).

[0151] In one example, the granularity of a CSI subband (eg, CSI subband 1004 in example 1011) is based on the BWP size.

[0152] In one example, the at least one BWP includes a single active BWP (eg, BWP 1005) in the frequency band, and the BWP size is the size of the single active BWP.

[0153] In one example, at least one BWP includes a first active BWP (e.g., first BWP 708) and a second active BWP (e.g., second BWP 710) in a frequency band, a first group of CSI subbands (e.g., CSI subband 1004 in first group 1312) is within the first active BWP, a second group of CSI subbands (e.g., CSI subband 1004 in second group 1313) is within the second active BWP, a granularity of the first group of CSI subbands is based on a first BWP size of the first active BWP, a granularity of the second group of CSI subbands is based on a second BWP size of the second active BWP, and the second BWP size is different from the first BWP size.

[0154] In one example, the granularity of a CSI subband (eg, CSI subband 1004) is also based on the downlink subband size.

[0155] In one example, at least one BWP includes a single active BWP (e.g., BWP 1005) in a frequency band that includes a second downlink subband (e.g., downlink subband 1006), and the granularity of the CSI subband (e.g., CSI subband 1004 in Example 1012) is based on an aggregate size of the downlink subband and the second downlink subband.

[0156] In one example, the granularity of the CSI subband is based on the duplex mode of the CSI report (eg, the duplex mode 1412 or the association of the CSI report with the CSI-RS in the 'D+U' slot 1108).

[0157] In one example, the CSI reporting configuration indicates a half-duplex subband size (e.g., for subband CSI reporting in downlink timeslot 1106) and a full-duplex subband size (e.g., for subband CSI reporting in 'D+U' timeslot 1108), and based on the duplex mode being full-duplex mode (e.g., duplex mode 1412 or the association of the CSI report with the CSI-RS in 'D+U' timeslot 1108), the granularity of the CSI subband is the full-duplex subband size.

[0158] In one example, an initial resource block for a CSI subband (eg, a starting point of CSI subband 1204) is based on a reference resource block (eg, reference resource block 1212) associated with a component carrier including at least one BWP.

[0159] In one example, the frequency band includes a second downlink subband, a first group of CSI subbands (e.g., first group 1312) overlaps with the downlink subband, a second group of CSI subbands (e.g., second group 1313) overlaps with the second downlink subband, a first initial resource block for the first group of CSI subbands (e.g., a starting point of the first group 1312) is based on a reference resource block (e.g., reference resource block 1314) associated with a component carrier including at least one BWP, and a second initial resource block for the second group of CSI subbands (e.g., a starting point of the second group 1313) is based on a different reference resource block (e.g., reference resource block 1316).

[0160] Fig.171700 is a diagram illustrating an example of a hardware implementation for an apparatus 1702. The apparatus 1702 is a UE and includes one or more cellular baseband processors 1704 (also referred to as a modem) coupled to a cellular RF transceiver 1722 and one or more subscriber identity modules (SIM) cards 1720, an application processor 1706 coupled to a secure digital (SD) card 1708 and a screen 1710, a Bluetooth module 1712, a wireless local area network (WLAN) module 1714, a global positioning system (GPS) module 1716, and a power source 1718. The one or more cellular baseband processors 1704 communicate with the UE 104 and / or the BS 102 / 180 / decomposed base station 181 through the cellular RF transceiver 1722. The one or more cellular baseband processors 1704 may each include a computer-readable medium / one or more memories. The computer-readable medium / one or more memories may be non-transitory. The one or more cellular baseband processors 1704 are responsible for general processing, including executing software stored on a computer-readable medium / one or more memories, alone or in combination. The software, when executed by the one or more cellular baseband processors 1704, enables the one or more cellular baseband processors 1704 to perform the various functions described above, alone or in combination. The computer-readable medium / one or more memories may also be used, alone or in combination, to store data manipulated by the one or more cellular baseband processors 1704 when executing the software. The one or more cellular baseband processors 1704 may also include a receiving component 1730, a communication manager 1732, and a sending component 1734, alone or in combination. The communication manager 1732 includes one or more of the illustrated components. The components within the communication manager 1732 may be stored in a computer-readable medium / one or more memories and / or configured as hardware within the one or more cellular baseband processors 1704. The one or more cellular baseband processors 1704 may be a component of the UE 350 and may include, alone or in combination, at least one of the one or more memories 360 and / or at least one of the one or more TX processors 368, at least one of the one or more RX processors 356, and at least one of the one or more controllers / processors 359. In one configuration, the device 1702 may be a modem chip and include only the one or more baseband processors 1704, and in another configuration, the device 1702 may be the entire UE (e.g., see Figure 3 350) and includes the above-mentioned additional modules of device 1702.

[0161] The communication manager 1732 includes a configuration component 1740 configured to receive a CSI reporting configuration indicating a plurality of CSI subbands for at least one BWP, eg, as described in conjunction with 1502 .

[0162] The communication manager 1732 includes a reference signal component 1742 configured to receive a CSI-RS in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband, for example, as described in conjunction with 1504.

[0163] The communication manager 1732 includes a reporting component 1744 that is configured to send a CSI report, wherein the CSI report includes a first CSI associated with a CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with a downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with an uplink subband, for example, as described in conjunction with 1506.

[0164] The device may include executing Fig.15 Each of the boxes in the algorithm in the preceding flowchart is an additional component. Therefore, Fig.15 Each block in the aforementioned flow chart of can be performed by a component, and the apparatus may include one or more of these components. These components may be one or more hardware components, which are specifically configured to perform the stated process / algorithm, implemented by one or more processors configured to perform the stated process / algorithm alone or in combination, stored in a computer-readable medium for implementation by one or more processors, or some combination of the above.

[0165] In one configuration, the apparatus 1702 (and in particular one or more cellular baseband processors 1704) includes: means for receiving a CSI report configuration indicating a plurality of CSI subbands for at least one BWP, wherein the means for receiving is further configured to receive a CSI-RS in a time slot associated with a full-duplex mode, the time slot being further associated with a frequency band comprising a downlink subband and an uplink subband; and means for sending a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with the uplink subband.

[0166] The aforementioned means may be one or more of the aforementioned means of the apparatus 1702 configured to perform the functions recited by the aforementioned means. As described above, the apparatus 1702 may include one or more TX processors 368, one or more RX processors 356, and one or more controllers / processors 359. Therefore, in one configuration, the aforementioned means may be at least one of the one or more TX processors 368, at least one of the one or more RX processors 356, or at least one of the one or more controllers / processors 359, which are configured alone or in any combination to perform the functions recited by the aforementioned means.

[0167] Fig.18 1800 is a diagram illustrating an example of a hardware implementation for an apparatus 1802. The apparatus 1802 is a network entity (such as a base station) and includes one or more baseband units 1804. The one or more baseband units 1804 communicate with the UE 104 via a cellular RF transceiver. The one or more baseband units 1804 may each include a computer-readable medium / one or more memories. The computer-readable medium / one or more memories may be non-transitory. The one or more baseband units 1804 are responsible for general processing, including executing software stored on the computer-readable medium / one or more memories, either alone or in combination. The software, when executed by the one or more baseband units 1804, causes the one or more baseband units 1804 to perform the various functions described above, either alone or in combination. The computer-readable medium / one or more memories may also be used, either alone or in combination, to store data manipulated by the one or more baseband units 1804 when executing the software. The one or more baseband units 1804 may also include a receiving component 1830, a communication manager 1832, and a sending component 1834, either alone or in combination. The communication manager 1832 includes one or more of the illustrated components. The components within the communication manager 1832 may be stored in a computer-readable medium / one or more memories and / or configured as hardware within one or more baseband units 1804. The one or more baseband units 1804 may be components of the BS 310 and may include, alone or in combination, at least one of the one or more memories 376 and / or at least one of the one or more TX processors 316, at least one of the one or more RX processors 370, and at least one of the one or more controllers / processors 375.

[0168] The communication manager 1832 includes a configuration component 1840 configured to send a CSI reporting configuration indicating a plurality of CSI subbands for at least one BWP, eg, as described in conjunction with 1602 .

[0169] The communication manager 1832 includes a reference signal component 1842 configured to send a CSI-RS in a time slot associated with the full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband, for example, as described in conjunction with 1604.

[0170] The communication manager 1832 includes a reporting component 1844 that is configured to receive a CSI report, wherein the CSI report includes a first CSI associated with a CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with a downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with an uplink subband, for example, as described in conjunction with 1606.

[0171] The device may include executing Fig.16 Each of the boxes in the algorithm in the preceding flowchart is an additional component. Therefore, Fig.16 Each block in the aforementioned flow chart of can be performed by a component, and the apparatus may include one or more of these components. These components may be one or more hardware components, which are specifically configured to perform the stated process / algorithm, implemented by one or more processors configured to perform the stated process / algorithm alone or in combination, stored in a computer-readable medium for implementation by one or more processors, or some combination of the above.

[0172] In one configuration, the apparatus 1802 (and in particular one or more baseband units 1804) includes: means for sending a CSI report configuration indicating multiple CSI subbands of at least one BWP, wherein the means for sending is further configured to send a CSI-RS in a time slot associated with a full-duplex mode, the time slot being further associated with a frequency band including a downlink subband and an uplink subband; and means for receiving a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with the uplink subband.

[0173] The aforementioned means may be one or more of the aforementioned means of the apparatus 1802 configured to perform the functions recited by the aforementioned means. As described above, the apparatus 1802 may include one or more TX processors 316, one or more RX processors 370, and one or more controllers / processors 375. Therefore, in one configuration, the aforementioned means may be at least one of the one or more TX processors 316, at least one of the one or more RX processors 356, or at least one of the one or more controllers / processors 359, which are configured alone or in any combination to perform the functions recited by the aforementioned means.

[0174] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is merely an illustration of the exemplary method. It should be understood that the specific order or hierarchy of the blocks in the process / flowchart may be rearranged based on design preferences. Further, some blocks may be combined or omitted. The attached method claims provide the elements of each block in a sample order, but are not meant to be limited to the specific order or hierarchy provided.

[0175] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not intended to be limited to the various aspects shown herein, but to conform to the full scope consistent with the language claims, wherein unless otherwise specified, references to elements in the singular form are not intended to represent "one and only one", but to represent "one or more". Terms such as "if", "when ......" and "while ......" should be interpreted as "under the conditions of ......", rather than meaning an immediate time relationship or reaction. That is, these phrases, such as "when ......", do not mean an immediate action in response to the occurrence of an action or during the occurrence of an action, but simply imply that if the conditions are met, the action will occur, but no specific or immediate time limit is required for the occurrence of the action. The word "exemplary" is used herein to mean "used as an example, instance, or illustration". Any aspect described as "exemplary" herein is not necessarily interpreted as being preferred or having advantages over other aspects. Unless otherwise specified, the term "some" refers to one or more. Combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” include any combination of A, B, and / or C, which may include multiple A, multiple B, or multiple C. Specifically, combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, where any such combination may include one or more members of A, B, or C. All structural and functional equivalents to the elements of the various aspects described throughout the disclosure that are known or later become known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Furthermore, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recited in the claims. Words such as "module," "mechanism," "element," "device," etc. cannot replace the word "component." Therefore, no claim element will be construed as part-plus-function unless the element is explicitly recited using the phrase "component for..."

[0176] As used herein, a processor, at least one processor, and / or one or more processors that are configured to perform or are operable to perform multiple actions (such as the functions described above), either individually or in combination, is intended to include at least two different processors capable of performing different subsets, overlapping subsets, or non-overlapping subsets of the multiple actions, or a single processor capable of performing all of the multiple actions. In a non-limiting example of multiple processors capable of performing different actions combined in the multiple actions, a description of a processor, at least one processor, and / or one or more processors that are configured or are operable to perform actions X, Y, and Z may include at least a first processor that is configured or is operable to perform a first subset of X, Y, and Z (e.g., perform X) and at least a second processor that is configured or is operable to perform a second subset of X, Y, and Z (e.g., perform Y and Z). Alternatively, the first processor, the second processor, and the third processor may be configured or operable to perform corresponding actions in actions X, Y, and Z, respectively. It should be understood that any combination of one or more processors may each be configured or operable to perform any one of the multiple actions or any combination of the multiple actions.

[0177] Similarly, as used herein, a memory, at least one memory, a computer-readable medium, and / or one or more memories configured, alone or in combination, to store or have stored thereon instructions for performing multiple actions (such as the functions described above) that are executable by one or more processors are intended to include at least two different memories capable of storing different subsets, overlapping subsets, or non-overlapping subsets of instructions for performing different subsets, overlapping subsets, or non-overlapping subsets of the multiple actions, or a single memory capable of storing instructions for performing all of the multiple actions. In one non-limiting example of one or more memories (alone or in combination) capable of storing different subsets of instructions for performing different ones of the plurality of actions, a description of a memory, at least one memory, a computer-readable medium, and / or one or more memories configured or operable to store or have stored thereon instructions for performing actions X, Y, and Z may include at least a first memory configured or operable to store or have stored thereon a first subset of instructions for performing a first subset of X, Y, and Z (e.g., instructions to perform X), and at least a second memory configured or operable to store or have stored thereon a second subset of instructions for performing a second subset of X, Y, and Z (e.g., instructions to perform Y and Z). Alternatively, the first memory, the second memory, and the third memory may be configured or operable to store or have stored thereon a respective one of the first subset of instructions for performing X, the second subset of instructions for performing Y, and the third subset of instructions for performing Z, respectively. It should be understood that any combination of one or more memories may each be configured or operable to store or have stored thereon any instruction or any combination of instructions that can be executed by one or more processors to perform any of a plurality of actions or any combination of the plurality of actions. In addition, one or more processors may each be coupled to at least one of the one or more memories and configured or operable to execute instructions to perform the plurality of actions. For example, in the above non-limiting example of different instruction subsets for performing actions X, Y, and Z, a first processor may be coupled to a first memory storing instructions for performing action X, at least a second processor may be coupled to at least a second memory storing instructions for performing actions Y and Z, and the first processor and the second processor may execute the corresponding instruction subsets in combination to complete the execution of actions X, Y, and Z. Alternatively, three processors may access one of three different memories, each of which stores instructions for performing actions X, Y, or Z, and the three processors may execute the corresponding instruction subsets in combination to complete the execution of actions X, Y, and Z. Alternatively, a single processor may execute instructions stored on a single memory or distributed on multiple memories to complete the execution of actions X, Y, and Z.

[0178] The following examples are merely illustrative and may be combined with aspects of other embodiments or teachings described herein, but are not limited thereto.

[0179] Embodiment 1 is a device for wireless communication, the device comprising: one or more memories; and one or more processors, each of the one or more processors being communicatively coupled to at least one of the one or more memories, the one or more processors being capable of operating individually or in any combination to cause the device to: receive a CSI report configuration indicating multiple channel state information (CSI) subbands of at least one bandwidth part (BWP); receive a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot being further associated with a frequency band including a downlink subband and an uplink subband; and send a CSI report, wherein the CSI report comprises a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps with the downlink subband in frequency, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps with the uplink subband in frequency.

[0180] Embodiment 2 is the apparatus of embodiment 1, wherein the second one of the CSI subbands overlaps in frequency with the uplink subband and a guard band between the downlink subband and the uplink subband.

[0181] Embodiment 3 is the apparatus of embodiment 1, wherein the CSI report further lacks a third CSI for a third CSI subband in the CSI subband that partially overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband.

[0182] Embodiment 4 is an apparatus according to embodiment 1, wherein a third CSI subband in the CSI subband overlaps in frequency with the uplink subband or a guard band portion between the downlink subband and the uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subband that overlaps with the downlink subband.

[0183] Embodiment 5 is an apparatus according to embodiment 1, wherein a third CSI subband in the CSI subband partially overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subband that overlaps with the downlink subband and the guard band.

[0184] Embodiment 6 is the apparatus of any one of embodiments 1 to 5, wherein the granularity of the CSI subband is based on the BWP size.

[0185] Embodiment 7 is the apparatus of embodiment 6, wherein the at least one BWP comprises a single active BWP in the frequency band, and the BWP size is the size of the single active BWP.

[0186] Embodiment 8 is an apparatus according to embodiment 6, wherein the at least one BWP includes a first active BWP and a second active BWP in the frequency band, the first group of CSI subbands is within the first active BWP, the second group of CSI subbands is within the second active BWP, the granularity of the first group of CSI subbands is based on a first BWP size of the first active BWP, the granularity of the second group of CSI subbands is based on a second BWP size of the second active BWP, and the second BWP size is different from the first BWP size.

[0187] Embodiment 9 is the apparatus of embodiment 6, wherein the granularity of the CSI subband is further based on a downlink subband size.

[0188] Embodiment 10 is the apparatus of embodiment 9, wherein the at least one BWP comprises a single active BWP in the frequency band, the frequency band comprises a second downlink subband, and the granularity of the CSI subband is based on an aggregate size of the downlink subband and the second downlink subband.

[0189] Embodiment 11 is an apparatus according to any one of embodiments 1 to 10, wherein the granularity of the CSI subband is based on the duplex mode of the CSI report.

[0190] Embodiment 12 is the apparatus of embodiment 11, wherein the CSI reporting configuration indicates a half-duplex subband size and a full-duplex subband size, and based on the duplex mode being the full-duplex mode, the granularity of the CSI subband is the full-duplex subband size.

[0191] Embodiment 13 is the apparatus of any one of embodiments 1 to 12, wherein an initial resource block for the CSI subband is based on a reference resource block associated with a component carrier including the at least one BWP.

[0192] Embodiment 14 is an apparatus according to any one of embodiments 1 to 12, wherein the frequency band includes a second downlink subband, the first group of the CSI subbands overlaps with the downlink subband, the second group of the CSI subbands overlaps with the second downlink subband, the first initial resource block for the first group of the CSI subbands is based on a reference resource block associated with a component carrier including the at least one BWP, and the second initial resource block for the second group of the CSI subbands is based on a different reference resource block.

[0193] Embodiment 15 is a device for wireless communication, the device comprising: one or more memories; and one or more processors, each of the one or more processors being communicatively coupled to at least one of the one or more memories, the one or more processors being capable of operating individually or in any combination to cause the device to: send a CSI report configuration indicating multiple channel state information (CSI) subbands of at least one bandwidth part (BWP); send a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot being further associated with a frequency band including a downlink subband and an uplink subband; and receive a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps with the downlink subband in frequency, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps with the uplink subband in frequency.

[0194] Embodiment 16 is the apparatus of embodiment 15, wherein the second of the CSI subbands overlaps in frequency with the uplink subband and a guard band between the downlink subband and the uplink subband.

[0195] Embodiment 17 is an apparatus according to embodiment 15, wherein the CSI report further lacks a third CSI for a third CSI subband in the CSI subband that overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband.

[0196] Embodiment 18 is an apparatus according to embodiment 15, wherein a third CSI subband in the CSI subbands overlaps in frequency with the uplink subband or a guard band portion between the downlink subband and the uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subbands that overlaps with the downlink subband.

[0197] Embodiment 19 is an apparatus according to embodiment 15, wherein a third CSI subband in the CSI subband partially overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subband that overlaps with the downlink subband and the guard band.

[0198] Embodiment 20 is the apparatus of any one of embodiments 15 to 19, wherein the granularity of the CSI subband is based on a BWP size.

[0199] Embodiment 21 is the apparatus of embodiment 20, wherein the at least one BWP comprises a single active BWP in the frequency band, and the BWP size is the size of the single active BWP.

[0200] Embodiment 22 is an apparatus according to embodiment 20, wherein the at least one BWP includes a first active BWP and a second active BWP in the frequency band, the first group of CSI subbands is within the first active BWP, the second group of CSI subbands is within the second active BWP, the granularity of the first group of CSI subbands is based on a first BWP size of the first active BWP, the granularity of the second group of CSI subbands is based on a second BWP size of the second active BWP, and the second BWP size is different from the first BWP size.

[0201] Embodiment 23 is the apparatus of embodiment 20, wherein the granularity of the CSI subband is further based on a downlink subband size.

[0202] Embodiment 24 is an apparatus according to embodiment 23, wherein the at least one BWP includes a single active BWP in the frequency band, the frequency band includes a second downlink subband, and the granularity of the CSI subband is based on an aggregate size of the downlink subband and the second downlink subband.

[0203] Embodiment 25 is an apparatus according to any one of embodiments 15 to 24, wherein the granularity of the CSI subband is based on the duplex mode of the CSI report.

[0204] Embodiment 26 is an apparatus according to embodiment 25, wherein the CSI reporting configuration indicates a half-duplex subband size and a full-duplex subband size, and based on the duplex mode being the full-duplex mode, the granularity of the CSI subband is the full-duplex subband size.

[0205] Embodiment 27 is the apparatus of any one of embodiments 15 to 26, wherein an initial resource block for the CSI subband is based on a reference resource block associated with a component carrier including the at least one BWP.

[0206] Embodiment 28 is an apparatus according to any one of embodiments 15 to 26, wherein the frequency band includes a second downlink subband, the first group of the CSI subbands overlaps with the downlink subband, the second group of the CSI subbands overlaps with the second downlink subband, the first initial resource block for the first group of the CSI subbands is based on a reference resource block associated with a component carrier including the at least one BWP, and the second initial resource block for the second group of the CSI subbands is based on a different reference resource block.

[0207] Embodiment 29 is a method for performing wireless communications at a user equipment (UE), the method comprising: receiving a CSI report configuration indicating multiple channel state information (CSI) subbands of at least one bandwidth part (BWP); receiving a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot being further associated with a frequency band comprising a downlink subband and an uplink subband; and sending a CSI report, wherein the CSI report comprises a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with the uplink subband.

[0208] Embodiment 30 is the method of embodiment 29, wherein the second one of the CSI subbands overlaps in frequency with the uplink subband and a guard band between the downlink subband and the uplink subband.

[0209] Embodiment 31 is a method according to embodiment 29, wherein the CSI report also lacks a third CSI for a third CSI subband in the CSI subband that overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband.

[0210] Embodiment 32 is a method according to embodiment 29, wherein a third CSI subband in the CSI subband overlaps in frequency with the uplink subband or a guard band portion between the downlink subband and the uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subband that overlaps with the downlink subband.

[0211] Embodiment 33 is a method according to embodiment 29, wherein a third CSI subband in the CSI subband partially overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subband that overlaps with the downlink subband and the guard band.

[0212] Embodiment 34 is a method according to any one of embodiments 29 to 33, wherein the granularity of the CSI subband is based on the BWP size.

[0213] Embodiment 35 is a method according to embodiment 34, wherein the at least one BWP comprises a single active BWP in the frequency band, and the BWP size is the size of the single active BWP.

[0214] Embodiment 36 is a method according to embodiment 34, wherein the at least one BWP includes a first active BWP and a second active BWP in the frequency band, the first group of CSI subbands is within the first active BWP, the second group of CSI subbands is within the second active BWP, the granularity of the first group of CSI subbands is based on a first BWP size of the first active BWP, the granularity of the second group of CSI subbands is based on a second BWP size of the second active BWP, and the second BWP size is different from the first BWP size.

[0215] Embodiment 37 is a method according to embodiment 34, wherein the granularity of the CSI subband is further based on a downlink subband size.

[0216] Embodiment 38 is a method according to embodiment 37, wherein the at least one BWP includes a single active BWP in the frequency band, the frequency band includes a second downlink subband, and the granularity of the CSI subband is based on an aggregate size of the downlink subband and the second downlink subband.

[0217] Embodiment 39 is a method according to any one of embodiments 29 to 38, wherein the granularity of the CSI subband is based on the duplex mode of the CSI report.

[0218] Embodiment 40 is a method according to embodiment 39, wherein the CSI reporting configuration indicates a half-duplex subband size and a full-duplex subband size, and based on the duplex mode being the full-duplex mode, the granularity of the CSI subband is the full-duplex subband size.

[0219] Embodiment 41 is a method according to any one of embodiments 29 to 40, wherein the initial resource block for the CSI subband is based on a reference resource block associated with a component carrier including the at least one BWP.

[0220] Embodiment 42 is a method according to any one of embodiments 29 to 40, wherein the frequency band includes a second downlink subband, the first group of the CSI subbands overlaps with the downlink subband, the second group of the CSI subbands overlaps with the second downlink subband, the first initial resource block for the first group of the CSI subbands is based on a reference resource block associated with a component carrier including the at least one BWP, and the second initial resource block for the second group of the CSI subbands is based on a different reference resource block.

[0221] Embodiment 43 is a method for wireless communication at a network entity, the method comprising: sending a CSI report configuration indicating multiple channel state information (CSI) subbands of at least one bandwidth part (BWP); sending a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband; and receiving a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps with the downlink subband in frequency, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps with the uplink subband in frequency.

[0222] Embodiment 44 is a method according to embodiment 43, wherein the second one of the CSI subbands overlaps in frequency with the uplink subband and a guard band between the downlink subband and the uplink subband.

[0223] Embodiment 45 is a method according to embodiment 43, wherein the CSI report also lacks a third CSI for a third CSI subband in the CSI subband that overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband.

[0224] Embodiment 46 is a method according to embodiment 43, wherein a third CSI subband in the CSI subband overlaps in frequency with the uplink subband or a guard band portion between the downlink subband and the uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subband that overlaps with the downlink subband.

[0225] Embodiment 47 is a method according to embodiment 43, wherein a third CSI subband in the CSI subband partially overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband, and the CSI report includes a third CSI for a portion of the third CSI subband in the CSI subband that overlaps with the downlink subband and the guard band.

[0226] Embodiment 48 is a method according to any one of embodiments 43 to 47, wherein the granularity of the CSI subband is based on the BWP size.

[0227] Embodiment 49 is a method according to embodiment 48, wherein the at least one BWP comprises a single active BWP in the frequency band, and the BWP size is the size of the single active BWP.

[0228] Embodiment 50 is a method according to embodiment 48, wherein the at least one BWP includes a first active BWP and a second active BWP in the frequency band, the first group of CSI subbands is within the first active BWP, the second group of CSI subbands is within the second active BWP, the granularity of the first group of CSI subbands is based on a first BWP size of the first active BWP, the granularity of the second group of CSI subbands is based on a second BWP size of the second active BWP, and the second BWP size is different from the first BWP size.

[0229] Embodiment 51 is a method according to embodiment 48, wherein the granularity of the CSI subband is further based on a downlink subband size.

[0230] Embodiment 52 is a method according to embodiment 51, wherein the at least one BWP includes a single active BWP in the frequency band, the frequency band includes a second downlink subband, and the granularity of the CSI subband is based on an aggregate size of the downlink subband and the second downlink subband.

[0231] Embodiment 53 is a method according to any one of embodiments 43 to 52, wherein the granularity of the CSI subband is based on a duplex mode of the CSI report.

[0232] Embodiment 54 is a method according to embodiment 53, wherein the CSI reporting configuration indicates a half-duplex subband size and a full-duplex subband size, and based on the duplex mode being the full-duplex mode, the granularity of the CSI subband is the full-duplex subband size.

[0233] Embodiment 55 is a method according to any one of embodiments 43 to 54, wherein the initial resource block for the CSI subband is based on a reference resource block associated with a component carrier including the at least one BWP.

[0234] Embodiment 56 is a method according to any one of embodiments 43 to 54, wherein the frequency band includes a second downlink subband, the first group of the CSI subbands overlaps with the downlink subband, the second group of the CSI subbands overlaps with the second downlink subband, the first initial resource block for the first group of the CSI subbands is based on a reference resource block associated with a component carrier including the at least one BWP, and the second initial resource block for the second group of the CSI subbands is based on a different reference resource block.

[0235] Embodiment 57 is an apparatus for wireless communication, the apparatus comprising: a component for receiving a CSI report configuration of multiple channel state information (CSI) subbands indicating at least one bandwidth part (BWP); wherein the component for receiving is further configured to receive a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot being further associated with a frequency band including a downlink subband and an uplink subband; and a component for sending a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps with the downlink subband in frequency, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps with the uplink subband in frequency.

[0236] Embodiment 58 is an apparatus for wireless communication, the apparatus comprising: a component for sending a CSI report configuration indicating multiple channel state information (CSI) subbands of at least one bandwidth part (BWP); wherein the component for sending is further configured to receive a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot being further associated with a frequency band including a downlink subband and an uplink subband; and a component for receiving a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps with the downlink subband in frequency, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps with the uplink subband in frequency.

[0237] Embodiment 59 is a non-transitory computer-readable medium storing computer-executable code, which, when executed by a processor, causes the processor to: receive a CSI report configuration indicating multiple channel state information (CSI) subbands of at least one bandwidth part (BWP); receive a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband; and send a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with the uplink subband.

[0238] Embodiment 60 is a non-transitory computer-readable medium storing computer-executable code, which, when executed by a processor, causes the processor to: send a CSI report configuration indicating multiple channel state information (CSI) subbands of at least one bandwidth part (BWP); send a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot further associated with a frequency band including a downlink subband and an uplink subband; and receive a CSI report, wherein the CSI report includes a first CSI associated with the CSI-RS for a first CSI subband in the CSI subband that overlaps in frequency with the downlink subband, and the CSI report lacks a second CSI for a second CSI subband in the CSI subband that overlaps in frequency with the uplink subband.

Claims

1. A device for wireless communication, the device comprising: one or more memories; and one or more processors, each of the one or more processors being communicatively coupled to at least one of the one or more memories, the one or more processors being operable, alone or in any combination, to cause the apparatus to: receiving a channel state information (CSI) reporting configuration indicating a plurality of CSI subbands of at least one bandwidth part (BWP); receiving a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot being further associated with a frequency band including a downlink subband and an uplink subband; and A CSI report is sent, wherein the CSI report includes first CSI associated with the CSI-RS for a first CSI subband of the CSI subbands that overlaps in frequency with the downlink subband, and the CSI report lacks second CSI for a second CSI subband of the CSI subbands that overlaps in frequency with the uplink subband. 2 . The apparatus according to claim 1 , wherein the second one of the CSI subbands overlaps in frequency with the uplink subband and a guard band between the downlink subband and the uplink subband.

3. The apparatus of claim 1 , wherein the CSI report further lacks a third CSI for a third CSI subband in the CSI subband that partially overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband.

4. The apparatus of claim 1 , wherein a third one of the CSI subbands overlaps in frequency with the uplink subband or a guard band portion between the downlink subband and the uplink subband, and the CSI report includes third CSI for a portion of the third one of the CSI subbands that overlaps with the downlink subband.

5. The apparatus of claim 1 , wherein a third one of the CSI subbands partially overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband, and the CSI report comprises third CSI for a portion of the third one of the CSI subbands that overlaps with the downlink subband and the guard band. The apparatus of claim 1 , wherein the granularity of the CSI subband is based on a BWP size. 7 . The apparatus of claim 6 , wherein the at least one BWP comprises a single active BWP in the frequency band, and the BWP size is the size of the single active BWP.

8. The apparatus of claim 6, wherein the at least one BWP comprises a first active BWP and a second active BWP in the frequency band, the first group of CSI subbands is within the first active BWP, the second group of CSI subbands is within the second active BWP, the granularity of the first group of CSI subbands is based on a first BWP size of the first active BWP, the granularity of the second group of CSI subbands is based on a second BWP size of the second active BWP, and the second BWP size is different from the first BWP size.

9. The apparatus of claim 6, wherein the granularity of the CSI subband is further based on a downlink subband size.

10. The apparatus of claim 9, wherein the at least one BWP comprises a single active BWP in the frequency band, the frequency band comprising a second downlink subband, and the granularity of the CSI subband is based on an aggregate size of the downlink subband and the second downlink subband.

11. The apparatus of claim 1, wherein a granularity of the CSI subband is based on a duplex mode of the CSI report. 12 . The apparatus of claim 11 , wherein the CSI reporting configuration indicates a half-duplex subband size and a full-duplex subband size, and based on the duplex mode being the full-duplex mode, the granularity of the CSI subband is the full-duplex subband size.

13. The apparatus of claim 1, wherein an initial resource block for the CSI subband is based on a reference resource block associated with a component carrier including the at least one BWP.

14. The apparatus of claim 1 , wherein the frequency band includes a second downlink subband, the first group of the CSI subbands overlaps with the downlink subband, the second group of the CSI subbands overlaps with the second downlink subband, a first initial resource block for the first group of the CSI subbands is based on a reference resource block associated with a component carrier including the at least one BWP, and a second initial resource block for the second group of the CSI subbands is based on a different reference resource block.

15. An apparatus for wireless communication, the apparatus comprising: one or more memories; and one or more processors, each of the one or more processors being communicatively coupled to at least one of the one or more memories, the one or more processors being operable, alone or in any combination, to cause the apparatus to: sending a channel state information (CSI) reporting configuration indicating a plurality of CSI subbands of at least one bandwidth part (BWP); transmitting a CSI reference signal (CSI-RS) in a time slot associated with the full-duplex mode, the time slot being further associated with a frequency band including a downlink subband and an uplink subband; and A CSI report is received, wherein the CSI report includes first CSI associated with the CSI-RS for a first CSI subband of the CSI subbands that overlaps in frequency with the downlink subband, and the CSI report lacks second CSI for a second CSI subband of the CSI subbands that overlaps in frequency with the uplink subband. 16 . The apparatus of claim 15 , wherein the second of the CSI subbands overlaps in frequency with the uplink subband and a guard band between the downlink subband and the uplink subband.

17. The apparatus of claim 15, wherein the CSI report further lacks a third CSI for a third CSI subband in the CSI subband that partially overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband.

18. The apparatus of claim 15, wherein a third one of the CSI subbands overlaps in frequency with the uplink subband or a guard band portion between the downlink subband and the uplink subband, and the CSI report includes third CSI for a portion of the third one of the CSI subbands that overlaps with the downlink subband.

19. The apparatus of claim 15, wherein a third one of the CSI subbands partially overlaps in frequency with the uplink subband or a guard band between the downlink subband and the uplink subband, and the CSI report includes third CSI for a portion of the third one of the CSI subbands that overlaps with the downlink subband and the guard band.

20. The apparatus of claim 15, wherein the granularity of the CSI subband is based on a BWP size.

21. The apparatus of claim 20, wherein the at least one BWP comprises a single active BWP in the frequency band, and the BWP size is the size of the single active BWP.

22. The apparatus of claim 20, wherein the at least one BWP comprises a first active BWP and a second active BWP in the frequency band, the first group of CSI subbands is within the first active BWP, the second group of CSI subbands is within the second active BWP, the granularity of the first group of CSI subbands is based on a first BWP size of the first active BWP, the granularity of the second group of CSI subbands is based on a second BWP size of the second active BWP, and the second BWP size is different from the first BWP size.

23. The apparatus of claim 20, wherein the granularity of the CSI subband is further based on a downlink subband size.

24. The apparatus of claim 23, wherein the at least one BWP comprises a single active BWP in the frequency band, the frequency band comprising a second downlink subband, and the granularity of the CSI subband is based on an aggregate size of the downlink subband and the second downlink subband.

25. The apparatus of claim 15, wherein a granularity of the CSI subband is based on a duplex mode of the CSI report.

26. The apparatus of claim 25, wherein the CSI reporting configuration indicates a half-duplex subband size and a full-duplex subband size, and based on the duplex mode being the full-duplex mode, the granularity of the CSI subband is the full-duplex subband size.

27. The apparatus of claim 15, wherein an initial resource block for the CSI subband is based on a reference resource block associated with a component carrier including the at least one BWP.

28. The apparatus of claim 15, wherein the frequency band includes a second downlink subband, the first group of CSI subbands overlaps with the downlink subband, the second group of CSI subbands overlaps with the second downlink subband, a first initial resource block for the first group of CSI subbands is based on a reference resource block associated with a component carrier including the at least one BWP, and a second initial resource block for the second group of CSI subbands is based on a different reference resource block.

29. A method of wireless communication at a user equipment (UE), the method comprising: receiving a channel state information (CSI) reporting configuration indicating a plurality of CSI subbands of at least one bandwidth part (BWP); receiving a CSI reference signal (CSI-RS) in a time slot associated with a full-duplex mode, the time slot being further associated with a frequency band including a downlink subband and an uplink subband; and A CSI report is sent, wherein the CSI report includes first CSI associated with the CSI-RS for a first CSI subband of the CSI subbands that overlaps in frequency with the downlink subband, and the CSI report lacks second CSI for a second CSI subband of the CSI subbands that overlaps in frequency with the uplink subband.

30. A method for wireless communication at a network entity, the method comprising: sending a channel state information (CSI) reporting configuration indicating a plurality of CSI subbands of at least one bandwidth part (BWP); transmitting a CSI reference signal (CSI-RS) in a time slot associated with the full-duplex mode, the time slot being further associated with a frequency band including a downlink subband and an uplink subband; and A CSI report is received, wherein the CSI report includes first CSI associated with the CSI-RS for a first CSI subband of the CSI subbands that overlaps in frequency with the downlink subband, and the CSI report lacks second CSI for a second CSI subband of the CSI subbands that overlaps in frequency with the uplink subband.

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