Multiple codebook channel state information report prioritization

Abstract

Certain aspects of the present disclosure provide techniques for multiple codebook channel state information (CSI) report prioritization. A method of wireless communication by a user equipment (UE) includes receiving a CSI report configuration that configures one or more CSI-RS resource sets. Each (CSI-RS) resource set includes one or more (CSI-RS) resources. The CSI reporting configuration also configures a plurality of codebooks for reporting the CSI. The method comprises: receiving a priority order for the plurality of codebooks; and reporting the CSI based on the CSI reporting configuration and the priority order.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. patent application serial number 17 / 878,882 filed on August 1, 2022, which is hereby incorporated by reference into this document. Background Art Technical Field

[0003] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for channel state information (CSI) reporting.

[0004] Related technologies

[0005] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts or other similar types of services. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available wireless communication system resources.

[0006] Although wireless communication systems have made tremendous technical progress over the years, challenges still exist. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and wireless receivers. Therefore, there is a continued desire to improve the technical performance of wireless communication systems, including, for example: improving the speed and data carrying capacity of communications, improving the efficiency of using shared communication media, reducing the power used by transmitters and receivers when performing communications, improving the reliability of wireless communications, avoiding redundant transmission and / or reception and related processing, improving the coverage area of ​​wireless communications, increasing the number and types of devices that can access wireless communication systems, increasing the ability of different types of devices to communicate with each other, increasing the number and types of wireless communication media available for use, etc. Therefore, there is a need to further improve wireless communication systems to overcome the above-mentioned technical challenges and other challenges. Summary of the invention

[0007] One aspect provides a method for wireless communication by a user equipment (UE). The method includes receiving a CSI report configuration, the CSI report configuration configuring one or more CSI reference signal (CSI-RS) resource sets. Each CSI-RS resource set includes one or more CSI-RS resources. The CSI report configuration configures multiple codebooks for reporting CSI. The method includes receiving a priority order for the multiple codebooks. The method includes reporting CSI based on the CSI report configuration and the priority order.

[0008] On the other hand, a method for wireless communication by a network entity is provided. The method includes outputting a CSI report configuration, which configures one or more CSI-RS resource sets for a UE. Each CSI-RS resource set includes one or more CSI-RS resources. The CSI report configuration also configures a plurality of codebooks for reporting CSI for the UE. The method includes outputting a priority order for the plurality of codebooks. The method includes obtaining a CSI report from the UE based on the CSI report configuration and the priority order.

[0009] Other aspects provide: an apparatus operable to, configured to, or otherwise adapted to perform the aforementioned method and those described elsewhere herein; a non-transitory computer-readable medium comprising instructions that, when executed by a processor of the apparatus, cause the apparatus to perform the aforementioned method and those described elsewhere herein; a computer program product embodied on a computer-readable storage medium, the computer-readable storage medium comprising code for performing the aforementioned method and those described elsewhere herein; and an apparatus comprising components for performing the aforementioned method and those described elsewhere herein. By way of example, an apparatus may include a processing system, a device having a processing system, or a processing system cooperating through one or more networks.

[0010] For purposes of illustration, the following description and drawings set forth certain features. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings depict certain features of the various aspects described herein and should not be considered to limit the scope of the disclosure.

[0012] Figure 1 An example wireless communication network is depicted.

[0013] Figure 2 An example disaggregated base station architecture is depicted.

[0014] Figure 3 Aspects of an example base station and example user equipment are depicted.

[0015] Figure 4A , Figure 4B , Figure 4C and Figure 4D Various example aspects of data structures for a wireless communication network are described.

[0016] Figure 5A Depicted are example network antenna port configurations.

[0017] Figure 5B An example adaptation network antenna port configuration is depicted.

[0018] Figure 6An example CSI reporting configuration is illustrated.

[0019] Figure 7 Example antenna configurations are illustrated.

[0020] Fig. 8A is a table depicting examples of supported antennas and antenna port configurations for a single panel.

[0021] Figure 8B is a table depicting examples of supported antenna and antenna port configurations for multiple panels.

[0022] Fig. 9 An example process flow for CSI reporting and link adaptation is depicted.

[0023] Fig.10 Depicted is an example process flow for communications in a network between a network entity and a UE.

[0024] Fig.11 Example methodologies for wireless communications by a UE are described.

[0025] Fig.12 Example methodologies for wireless communications by a network entity are described.

[0026] Fig.13 Aspects of an example communications device are depicted.

[0027] Fig.14 Aspects of an example communications device are depicted. DETAILED DESCRIPTION

[0028] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for CSI report prioritization.

[0029] In wireless communication networks, network energy saving can be configured to reduce power consumption and the cost of running the network. In the case of network energy saving, the network can dynamically change the number of active antenna ports to balance business needs and energy saving. Therefore, the UE can be configured with multiple codebooks associated with different numbers of CSI-RS antenna ports. However, when the UE is configured with multiple codebooks, the UE can report wideband and subband CSI feedback for multiple codebooks. The physical uplink control channel (PUCCH) resources used to report CSI may not be sufficient to carry CSI bits for multiple codebooks.

[0030] Thus, aspects of the present disclosure provide for CSI reporting prioritization of CSI reporting for multiple codebooks. In some aspects, when PUCCH resources are insufficient to fit CSI bits for multiple codebooks, the UE determines one or more of the codebooks to drop CSI feedback. In some aspects, the UE determines a priority order for the codebooks and drops one or more codebooks based on the priority. In some examples, the UE receives the priority order from a network entity.

[0031] In some examples, the UE receives an indication of the primary codebook from the network and determines the remaining codebooks as secondary codebooks. In some aspects, the UE determines that the primary codebook has the highest priority and the secondary codebook has a lower priority.

[0032] In some aspects, the UE determines the relative priority of the secondary codebook. For example, the UE may determine the relative priority of the secondary codebook based on the priority order of the plurality of codebooks received from the network entity, but determine the primary codebook as having the highest priority regardless of the priority order. In some examples, the UE receives a priority order of the secondary codebook for each codebook that is different from the primary codebook.

[0033] In some aspects, the UE is configured or pre-configured with a priority order rule. The priority rule may specify that a codebook with a higher number of CSI-RS antenna ports has a higher priority than a codebook with a lower number of CSI-RS antenna ports.

[0034] In some examples, the priority of the codebook is based on whether the codebook is for wideband CSI or for subband CSI.

[0035] Therefore, the UE may be configured with multiple codebooks so that the network can dynamically adapt the link, and the UE may determine the prioritized order of the multiple codebooks for CSI reporting.

[0036] Introduction to wireless communication networks

[0037] The techniques and methods described herein can be used in various wireless communication networks. Although various aspects may be described herein using terms commonly associated with 3G, 4G and / or 5G wireless technologies, various aspects of the present disclosure may also be applicable to other communication systems and standards not explicitly mentioned herein.

[0038] Figure 1 An example of a wireless communication network 100 is depicted in which various aspects described herein may be implemented.

[0039] In general, the wireless communication network 100 includes various network entities (alternatively, network elements or network nodes). A network entity is typically a communication device and / or a communication function performed by a communication device (e.g., user equipment (UE), base station (BS), component of a BS, server, etc.). For example, various functions of a network and various devices associated with and interacting with the network may be considered network entities. In addition, the wireless communication network 100 includes ground aspects, such as ground-based network entities (e.g., BS 102), and non-ground aspects, such as satellites 140 and aircraft 145, which may include airborne network entities (e.g., one or more BSs) capable of communicating with other network elements (e.g., ground BSs) and user equipment.

[0040] In the depicted example, the wireless communication network 100 includes a BS 102, a UE 104, and one or more core networks (such as an evolved packet core (EPC) 160 and a 5G core (5GC) network 190) that interoperate to provide communication services over various communication links (including wired and wireless links).

[0041] Figure 1 Various example UEs 104 are depicted, which may more generally include: a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player, a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, an Internet of Things (IoT) device, an Always-On (AON) device, an edge processing device, or other similar devices. UE 104 may also be more generally referred to as a mobile device, a wireless device, a wireless communication device, a station, a mobile station, a subscriber station, a mobile subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a remote device, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, and others.

[0042] BS 102 wirelessly communicates with (e.g., sends signals to or receives signals from) UE 104 via communication link 120. Communication link 120 between BS 102 and UE 104 may include uplink (UL) (also referred to as a reverse link) transmissions from UE 104 to BS 102 and / or downlink (DL) (also referred to as a forward link) transmissions from BS 102 to UE 104. In various aspects, communication link 120 may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity.

[0043] BS 102 may generally include: NodeB, enhanced NodeB (eNB), next generation enhanced NodeB (ng-eNB), next generation NodeB (gNB or gNodeB), access point, base transceiver station, radio base station, radio transceiver, transceiver function, transmission and reception point, and / or other. Each of BS 102 may provide communication coverage for a corresponding geographic coverage area 110, which may sometimes be referred to as a cell, and may overlap in some cases (e.g., a small cell 102' may have a coverage area 110' that overlaps with the coverage area 110 of a macro cell). For example, a BS may provide communication coverage for a macro cell (covering a relatively large geographic area), a pico cell (covering a relatively small geographic area, such as a stadium), a femto cell (relatively small geographic area (e.g., a home)), and / or other types of cells.

[0044] Although BS102 is depicted as a single communication device in various aspects, BS102 can be implemented in various configurations. For example, one or more components of the base station may be decomposed, including a central unit (CU), one or more distributed units (DU), one or more radio units (RU), a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, to name a few examples. In another example, various aspects of the base station may be virtualized. More generally, a base station (e.g., BS102) may include components located at a single physical location or components located at various physical locations. In an example in which the base station includes components located at various physical locations, each component may perform a function so that each component together implements a function similar to that of a base station located at a single physical location. In some aspects, a base station including components located at various physical locations may be referred to as a decomposed radio access network architecture (such as an open RAN (O-RAN) or virtualized RAN (VRAN) architecture). Figure 2 An example decomposed base station architecture is depicted and described.

[0045] Different BSs 102 within the wireless communication network 100 may also be configured to support different radio access technologies (such as 3G, 4G, and / or 5G). For example, a BS 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). A BS 102 configured for 5G (e.g., 5G NR or Next Generation RAN (NG-RAN)) may interface with the 5GC 190 via a second backhaul link 184. The BSs 102 may communicate with each other directly or indirectly (e.g., via the EPC 160 or the 5GC 190) over a third backhaul link 134 (e.g., an X2 interface), which may be wired or wireless.

[0046] The wireless communication network 100 may subdivide the electromagnetic spectrum into various categories, frequency bands, channels, or other characteristics. In some aspects, the subdivision is provided based on wavelength and frequency, where frequency may also be referred to as a carrier, subcarrier, channel, tone, or subband. For example, 3GPP currently defines frequency range 1 (FR1) as including 410 MHz-7125 MHz, which is often (interchangeably) referred to as "below 6 GHz". Similarly, 3GPP currently defines frequency range 2 (FR2) as including 24,250 MHz-52,600 MHz, which is sometimes (interchangeably) referred to as "millimeter wave" ("mmW" or "mmWave"). A base station (e.g., a mmWave base station such as BS180) configured to communicate using mmWave / near mmWave radio bands may utilize beamforming (e.g., 182) with a UE (e.g., 104) to improve path loss and range.

[0047] The communication link 120 between the BS 102 and, for example, the UE 104 may be through one or more carriers, which may have different bandwidths (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, and / or other MHz) and may be aggregated in various aspects. The 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).

[0048] Communications using higher frequency bands may have higher path loss and shorter range than communications at lower frequencies. Therefore, some base stations (e.g. Figure 1180) may utilize beamforming 182 with UE 104 to improve path loss and range. For example, BS 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming. In some cases, BS 180 may send beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamformed signals from BS 180 in one or more receive directions 182". UE 104 may also send beamformed signals to BS 180 in one or more transmit directions 182". BS 180 may also receive beamformed signals from UE 104 in one or more receive directions 182'. BS 180 and UE 104 may then perform beam training to determine the best receive and transmit directions for each of BS 180 and UE 104. It is noteworthy that the transmit direction and receive direction of BS 180 may be the same or different. Similarly, the transmit direction and receive direction of UE 104 may be the same or different.

[0049] Wireless communication network 100 also includes Wi-Fi AP 150 that communicates with Wi-Fi station (STA) 152 via communication link 154 in, for example, the 2.4 GHz and / or 5 GHz unlicensed spectrum.

[0050] Certain UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. 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), a physical sidelink control channel (PSCCH), and / or a physical sidelink feedback channel (PSFCH).

[0051] The EPC 160 may include various functional components, including: a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and / or a packet data network (PDN) gateway 172, such as in the depicted example. 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. In general, the MME 162 provides bearer and connection management.

[0052] Generally, user Internet Protocol (IP) packets are delivered 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 the IP Services 176, which may include, for example, the Internet, an Intranet, an IP Multimedia Subsystem (IMS), a Packet Switched (PS) streaming media service, and / or other IP services.

[0053] The BM-SC 170 may provide functionality for MBMS user service provisioning 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 within a public land mobile network (PLMN), and / or may be used to schedule MBMS delivery. The MBMS Gateway 168 may be used to distribute MBMS services to BSs 102 belonging to a multicast broadcast single frequency network (MBSFN) area broadcasting a specific service, and / or may be responsible for session management (start / stop) and for collecting eMBMS related charging information.

[0054] 5GC 190 may include various functional components, including: access and mobility management function (AMF) 192, other AMFs 193, session management function (SMF) 194, and user plane function (UPF) 195. AMF 192 may communicate with unified data management (UDM) 196.

[0055] AMF 192 is a control node that handles signaling between UE 104 and 5GC 190. AMF 192 provides, for example, Quality of Service (QoS) flow and session management.

[0056] Internet Protocol (IP) packets are delivered through UPF 195, which is connected to IP Services 197 and provides UE IP address allocation and other functions for 5GC 190. IP Services 197 may include, for example, the Internet, Intranet, IMS, PS streaming services, and / or other IP services.

[0057] In various aspects, a network entity or network node may be implemented as a converged base station, a decomposed base station, a component of a base station, an integrated access and backhaul (IAB) node, a relay node, a sidelink node, to name a few examples.

[0058] Figure 2An example disaggregated base station 200 architecture is depicted. The disaggregated base station 200 architecture may include one or more central units (CUs) 210 that may communicate directly with a core network 220 via a backhaul link, or indirectly with the core network 220 through one or more disaggregated base station units, such as a near real-time (near-RT) RAN intelligent controller (RIC) 225 via an E2 link, or a non-real-time (non-RT) RIC 215 associated with a service management and orchestration (SMO) framework 205, or both. The CU 210 may communicate with one or more distributed units (DUs) 230 via respective midhaul links, such as an F1 interface. The DU 230 may communicate with one or more radio units (RUs) 240 via respective fronthaul links. The RU 240 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 240.

[0059] Each of the units (e.g., CU 210, DU 230, RU 240, and near-RT RIC 225, non-RT RIC 215, and SMO framework 205) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to the communication interface of the unit may be configured to communicate with one or more of the other units via a transmission medium. For example, the units may include a wired interface configured to receive or send signals to one or more of the other units via a wired transmission medium. Additionally or alternatively, the unit 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 or send signals, or both, to one or more of the other units on a wireless transmission medium.

[0060] In some aspects, CU 210 may host one or more 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 configured to communicate signals with other control functions hosted by CU 210. CU210 may be configured to handle user plane functions (e.g., central unit-user plane (CU-UP)), control plane functions (e.g., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 210 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 210 may be implemented to communicate with DU 230 for network control and signaling.

[0061] DU 230 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 240. In some aspects, DU 230 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 functional divisions such as those defined by the 3rd Generation Partnership Project (3GPP). In some aspects, DU 230 may also 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 230 or with control functions hosted by CU 210.

[0062] The lower layer functionality may be implemented by one or more RUs 240. In some deployments, a RU 240 controlled by a DU 230 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, physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on a functional split (such as a lower layer functional split). In such an architecture, the RU 240 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 240 may be controlled by the corresponding DU 230. In some scenarios, this configuration may enable the implementation of the DU 230 and the CU 210 in a cloud-based RAN architecture (such as a vRAN architecture).

[0063] The SMO framework 205 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 205 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 205 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 290) 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 210, DU 230, RU 240, and near-RT RIC 225. In some specific implementations, the SMO framework 205 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 211) via the O1 interface. Additionally, in some specific implementations, the SMO framework 205 may communicate directly with one or more RUs 240 via the O1 interface. The SMO framework 205 may also include a non-RT RIC 215 configured to support the functionality of the SMO framework 205 .

[0064] The non-RT RIC 215 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 225. The non-RT RIC 215 may be coupled to or in communication with the near-RT RIC 225 (such as via an A1 interface). The near-RT RIC 225 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 210, one or more DUs 230, or both, and the O-eNB with the near-RT RIC 225.

[0065] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 225, the non-RT RIC 215 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 225 and may be received from a non-network data source or from a network function at the SMO framework 205 or the non-RT RIC 215. In some examples, the non-RT RIC 215 or the near-RT RIC 225 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 215 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 205 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0066] Figure 3 Aspects of an example BS 102 and UE 104 are depicted.

[0067] In general, BS 102 includes various processors (e.g., 320, 330, 338, and 340), antennas 334a-334t (collectively 334), transceivers 332a-332t (collectively 332) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., data source 312) and wireless reception of data (e.g., data sink 339). For example, BS 102 can transmit and receive data between BS 102 and UE 104. BS 102 includes a controller / processor 340 that can be configured to implement various functions described herein related to wireless communication.

[0068] Generally speaking, the UE 104 includes various processors (e.g., 358, 364, 366, and 380), antennas 352a-352r (collectively 352), transceivers 354a-354r (collectively 354) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., retrieved from a data source 362) and wireless reception of data (e.g., provided to a data sink 360). The UE 104 includes a controller / processor 380 that can be configured to implement various functions described herein related to wireless communications.

[0069] Regarding example downlink transmissions, BS 102 includes a transmit processor 320 that can receive data from a data source 312 and control information from a controller / processor 340. The control information can be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical HARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), and / or others. In some examples, the data can be for a physical downlink shared channel (PDSCH).

[0070] The transmit processor 320 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 320 may also generate reference symbols (such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH demodulation reference signal (DMRS), and a channel state information reference signal (CSI-RS)).

[0071] The transmit (TX) multiple-input multiple-output (MIMO) processor 330 may perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, and / or reference symbols, where applicable, and may provide an output symbol stream to a modulator (MOD) in a transceiver 332a-332t. Each modulator in the transceiver 332a-332t may process a corresponding output symbol stream to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from the modulators in the transceivers 332a-332t may be transmitted via antennas 334a-334t, respectively.

[0072] To receive downlink transmissions, UE 104 includes antennas 352a-352r that can receive downlink signals from BS 102 and can provide received signals to demodulators (DEMODs) in transceivers 354a-354r, respectively. Each demodulator in transceivers 354a-354r can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator can further process the input samples to obtain received symbols.

[0073] A MIMO detector 356 may obtain received symbols from all demodulators in transceivers 354a-354r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 358 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 104 to a data sink 360, and provide decoded control information to a controller / processor 380.

[0074] With respect to example uplink transmissions, the UE 104 also includes a transmit processor 364 that may receive and process data from a data source 362 (e.g., for a PUSCH) and control information from a controller / processor 380 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 364 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 364 may be pre-decoded by a TX MIMO processor 366, if applicable, further processed by a modulator in the transceivers 354a-354r (e.g., for SC-FDM), and transmitted to the BS 102.

[0075] At BS 102, uplink signals from UE 104 may be received by antennas 334 a-334 t, processed by demodulators in transceivers 332 a-332 t, detected by MIMO detector 336 if applicable, and further processed by receive processor 338 to obtain decoded data and control information transmitted by UE 104. Receive processor 338 may provide decoded data to data sink 339 and decoded control information to controller / processor 340.

[0076] Memory 342 and memory 382 may store data and program codes for BS 102 and UE 104, respectively.

[0077] The scheduler 344 may schedule UEs for data transmission on the downlink and / or uplink.

[0078] In various aspects, BS 102 may be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as outputting data from a data source 312, a scheduler 344, a memory 342, a transmit processor 320, a controller / processor 340, a TX MIMO processor 330, a transceiver 332a-332t, an antenna 334a-334t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from an antenna 334a-334t, a transceiver 332a-332t, a RX MIMO detector 336, a controller / processor 340, a receive processor 338, a scheduler 344, a memory 342, and / or other aspects described herein.

[0079] In various aspects, the UE 104 may also be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as outputting data from a data source 362, a memory 382, ​​a transmit processor 364, a controller / processor 380, a TX MIMO processor 366, a transceiver 354a-354t, an antenna 352a-352t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from an antenna 352a-352t, a transceiver 354a-354t, a RX MIMO detector 356, a controller / processor 380, a receive processor 358, a memory 382, ​​and / or other aspects described herein.

[0080] In some aspects, the processor may be configured to perform various operations (such as those associated with the methods described herein) and send (output) data to or receive (obtain) data from another interface configured to send or receive data, respectively.

[0081] Figure 4A , Figure 4B , Figure 4C and Figure 4D Describes a method for use in a wireless communication network such as Figure 1 Various aspects of the data structure of the wireless communication network 100).

[0082] Specifically, Figure 4A is a diagram 400 illustrating an example of a first subframe within a 5G (e.g., 5G NR) frame structure, Figure 4B is a diagram 430 illustrating an example of a DL channel within a 5G subframe, Figure 4C is a diagram 450 illustrating an example of a second subframe within a 5G frame structure, and Figure 4D FIG480 is a diagram illustrating an example of UL channels within a 5G subframe.

[0083] Wireless communication systems may utilize orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) on both the uplink and downlink. Such systems may also support half-duplex operation using time division duplexing (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) can be used to maximize the system bandwidth (e.g., Figure 4B and Figure 4D The modulation symbols may be transmitted in the frequency domain using OFDM and / or in the time domain using SC-FDM.

[0084] The wireless communication frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers, subframes within the set of subcarriers are dedicated to either DL or UL. The wireless communication frame structure may also be time division duplex (TDD), where for a particular set of subcarriers, subframes within the set of subcarriers are dedicated to both DL and UL.

[0085] exist Figure 4A and Figure 4C In the wireless communication frame structure, TDD is used, where D is DL, U is UL, and X is used flexibly between DL / UL. The UE can be configured with a time slot format (dynamically configured by DL control information (DCI) or semi-statically / statically configured by radio resource control (RRC) signaling) through the received time slot format indicator (SFI). In the depicted example, the 10ms frame is divided into 10 equally sized 1ms subframes. Each subframe may include one or more time slots. In some examples, each time slot may include 7 or 14 symbols, depending on the time slot format. The subframe may also include micro-time slots, which typically have fewer symbols than the entire time slot. Other wireless communication technologies may have different frame structures and / or different channels.

[0086] In certain aspects, the number of slots within a subframe is based on the slot configuration and numerology. For example, for slot configuration 0, different numerologies (μ) 0 to 5 allow for 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different numerologies 0 to 2 allow for 2, 4, and 8 slots per subframe, respectively. Thus, for slot configuration 0 and numerology μ, there are 14 symbols / slot and 2μ slots / subframe. The subcarrier spacing and symbol length / duration are a function of the numerology. The subcarrier spacing may be equal to 2 μ × 15kHz, where μ is parameter set 0 to 5. Thus, parameter set μ=0 has a subcarrier spacing of 15kHz, and parameter set μ=5 has a subcarrier spacing of 480kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figure 4A , Figure 4B , Figure 4C and Figure 4D 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.

[0087] like Figure 4A , Figure 4B , Figure 4C and Figure 4DAs depicted in , a resource grid can be used to represent a frame structure. Each time slot includes a resource block (RB) (also called a physical RB (PRB)) extending, for example, 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.

[0088] like Figure 4A As illustrated, some REs carry Figure 1 and Figure 3 The RS may include a demodulation RS (DMRS) and / or a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and / or a phase tracking RS (PT-RS).

[0089] Figure 4B 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 comprising, for example, nine RE Groups (REGs), each REG comprising, for example, four consecutive REs in an OFDM symbol.

[0090] The primary synchronization signal (PSS) may be in symbol 2 of a particular subframe of a frame. The PSS is transmitted by a UE (e.g., Figure 1 and Figure 3 104) is used to determine subframe / symbol timing and physical layer identification.

[0091] A 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 identity group number and radio frame timing.

[0092] Based on the physical layer identifier and the physical layer cell identifier group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DMRS. 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. 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 (such as system information blocks (SIBs)) that is not sent via the PBCH, and / or paging messages.

[0093] like Figure 4CAs illustrated, some REs carry DMRS for channel estimation at the base station (indicated as R for a particular configuration, but other DMRS configurations are also possible). The UE may send DMRS for PUCCH and DMRS for PUSCH. The PUSCH DMRS may be sent, for example, in the first one or two symbols of the PUSCH. The PUCCH DMRS may be sent in different configurations depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used. UE 104 may send a sounding reference signal (SRS). The SRS may be sent, for example, 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.

[0094] Figure 4D 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 HARQ ACK / 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.

[0095] Aspects related to network energy consumption

[0096] In some wireless communication networks (e.g., such as Figure 1 In the wireless communication network 100 illustrated in FIG. 1 , network energy saving is adopted to reduce energy consumption in the network.

[0097] In some wireless communication networks, the energy cost of running the network is a significant portion (e.g., about 25%) of the total cost of running the network. Of the energy cost, a large portion (e.g., about 50% in 5G NR) of the energy cost may be running the RAN. In the case of 5G massive MIMO, the energy cost due to the power consumption of active antenna units (AAUs) increases by two to three times compared to 4G technology. Therefore, energy savings are desirable for the adoption and expansion of such networks.

[0098] Network energy saving has been proposed to reduce / save power consumption of the network. In the case of network energy saving, the network can be adapted to save energy when possible. Network energy saving can consider factors including: power amplifier efficiency; number of transceivers; traffic load in saving energy by performing methods such as downlink / uplink sleep states; sleep state transition time; and other parameters and configurations. Such network energy saving can be balanced with the impact on network and user performance (e.g., spectral efficiency, capacity, user perceived throughput (UPT), latency, handover performance, call drop rate, initial access performance, performance indicators (KPIs) related to service level agreement (SLA) guarantees, energy efficiency, UE power consumption and / or complexity).

[0099] Aspects related to dynamic antenna port adaptation

[0100] One method for network energy saving is dynamic antenna port adaptation of network entity (e.g., gNB) antenna ports. In massive MIMO, a network entity may have multiple co-located antenna panels. Each antenna panel may include multiple antenna ports. Figure 5A An example network entity antenna panel configuration 500A is illustrated. As shown, the network entity has a plurality of co-located antenna panels 502, 504, 506, and 508. Each of the antenna panels includes a plurality of antenna ports 510. It should be understood that although Figure 5A Four antenna panels are illustrated and each antenna panel has four antenna ports, but the network entity antenna panel configuration may include any number of antenna panels with any number of antenna ports.

[0101] Each antenna panel can be equipped with multiple power amplifiers and antenna subsystem components that consume power. In the case of network energy conservation, the network can dynamically shut down such Figure 5B Some panels, sub-panels (not shown) or antenna ports (not shown) are shown. Figure 5B An example adapted network entity antenna panel configuration 500B is illustrated. As shown, antenna panels 504, 506, and 508 are turned off by the network to save power and reduce costs. For example, the antenna panels can be turned off when the cell load is low (e.g., below a threshold level).

[0102] Aspects related to CSI reporting

[0103] Channel state information refers to the channel properties of a communication link. CSI may represent, for example, the combined effects of scattering, fading, and power attenuation with distance between the transmitter and the receiver. Figure 1 and 3 104) can use a pilot such as a CSI-RS to perform channel estimation to determine the UE and network entities (e.g., Figure 1 and 3 The CSI can be used to adapt the transmission based on the current channel conditions, which is useful for achieving reliable communication, especially with high data rates, in multi-antenna systems. The CSI can be estimated, quantized, and fed back to the transmitter (e.g., BS) at the receiver (e.g., UE).

[0104] The network (e.g., BS) may configure each UE for CSI reporting. For example, the BS configures the UE with a CSI reporting configuration or multiple CSI reporting configurations. The CSI reporting configuration may be provided to the UE via higher layer signaling such as radio resource control (RRC) signaling (e.g., CSI ReportConfig IE with reporting settings). Figure 6 An example CSI reporting configuration 602 is illustrated.

[0105] The CSI report setting may be associated with a CSI-RS resource for channel measurement (CM), interference measurement (IM), or both. The CSI report configuration configures the CSI-RS resource for measurement. The CSI-RS resource may be provided to the UE via higher layer signaling such as RRC signaling (e.g., CSI-ResourceConfig IE with report settings). The CSI-RS resource provides the UE with a configuration of a CSI-RS port or a CSI-RS port group mapped to time and frequency resources (e.g., resource elements (RE)). The CSI-RS resource may be a zero power (ZP) or non-zero power (NZP) resource. At least one NZP CSI-RS resource may be configured for CM. As shown, the CSI report configuration 602 configures n NZP CMR resource sets; m CSI-IM resource sets, and k NZP IMR resource sets. Each NZP CMR resource set includes a set of a NZP CMR resources. Each CSI IM resource set includes a set of b CSI-IM resources. Each NZP IMR resource set includes c NZP IMR resources. On CSI-IM resources, other signals destined to the UE may be muted so that interference can be measured directly. In NZP IMR, the channel may be estimated based on including the CSI-RS in the assumed interference.

[0106] In some examples, each resource in a resource set includes the same number of CSI-RS ports. In some examples, a resource set including one resource may include up to 32 CSI-RS ports in the resource; a resource set including two resources may include up to 16 CSI-RS ports per resource; and a resource set including more than two resources may include up to 8 CSI-RS ports per resource.

[0107] The CSI report configuration may also be associated with a trigger state. The UU may be configured by higher signaling (such as RRC signaling) with one or more trigger state lists (e.g., CSI-AperiodicTriggerStateList and CSI-SemiPersistentOn PUSCH-TriggerStateList). Each trigger state may include a list of one or more related CSI report configurations.

[0108] The CSI report configuration also configures CSI parameters (e.g., in the reporting quantity parameter). The CSI may include a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), a SS / PBCH block resource indicator (SSBRI), a layer indicator (LI), a rank indicator (RI), a L1-RSRP, and / or a capability set index.

[0109] The UE CSI report configuration can configure a codebook. Type I single panel codebook, type I multi-panel codebook, type II single panel codebook, type II port selection codebook and / or type II enhanced port selection codebook. The structure of the PMI may vary based on the codebook. As shown in the figure, the CSI report configuration 602 includes a codebook configuration for configuring the codebook type. A codebook is a set of predecoders, referred to as a predecoding matrix. This set of predecoders is used to transform data bits into another set of data mapped to antenna ports. The codebook type may indicate an antenna configuration, a discrete Fourier transform (DFT) beam limit, and / or an RI limit. The antenna configuration may configure the antenna element configuration (N1, N2) and the number of panels (Ng) for each codebook type, and configure the corresponding number of CSI-RS antenna ports per resource (e.g., 2Ng*N1*N2). N1 is the number of horizontal antenna elements of the panel, and N2 is the number of vertical antenna elements in the panel. Figure 7 An example antenna configuration with Ng=2, N1=4, and N2=2 is illustrated, where panels 702 and 702 include two rows of four antenna elements. Fig. 8A is a table depicting examples of supported antennas and antenna port configurations for a single panel. Figure 8B is a table depicting examples of supported antenna and antenna port configurations for multiple panels. O1 and O2 are DFT oversampling parameters used to determine beam scanning in horizontal and vertical directions, respectively.

[0110] The CSI reporting configuration may configure the UE for aperiodic, periodic, or semi-persistent CSI reporting. For periodic CSI, the UE may be configured with periodic CSI-RS resources. Periodic CSI and semi-persistent CSI reporting on PUCCH may be triggered via RRC or medium access control (MAC) control elements (CEs). For aperiodic and semi-persistent CSI on PUSCH, the network may signal a CSI report trigger to the UE, which indicates that the UE sends a CSI report for one or more CSI-RS resources, or configures a CSI-RS report trigger state (e.g., CSI-AperiodicTriggerStateList and CSI-SemiPersistentOnPUSCH-TriggerStateList). CSI report triggers for aperiodic CSI and semi-persistent CSI on PUSCH may be provided via downlink control information (DCI). A CSI-RS trigger may be signaling to the UE indicating that a CSI-RS will be transmitted for a CSI-RS resource.

[0111] The UE may report CSI feedback based on the CSI reporting configuration and the CSI reporting trigger. For example, the UE may measure the channel associated with the CSI of the CSI-RS resource used for the trigger. Based on these measurements, the UE may select the CSI-RS resource. The UE reports CSI feedback for the selected CSI-RS resource. The LI can be calculated conditional on the reported CQI, PMI, RI, and CRI; the CQI can be calculated conditional on the reported PMI, RI, and CRI; the PMI can be calculated conditional on the reported RI and CRI; and the RI can be calculated conditional on the reported CRI.

[0112] For Type I, only single slot reporting may be performed. The CSI report may include a part 1 CSI report with RI / CRI and CQI for the first codeword, and part 2 of the CSI report may include PMI and CQI for the second codeword (e.g., when RI>4). The CSI report may be carried on short PUCCH and / or PUSCH and / or long PUCCH and / or PUSCH. Subband CSI may be carried on PUSCH and / or long PUCCH.

[0113] For Type II, Part 1 of the CSI report may include RI, CQI, and an indication of the number of non-zero wideband amplitude coefficients for each layer. Part 1 of the CSI report may have a fixed size, and each field may be encoded separately. Part 1 of the CSI report may be used to identify the number of bits of Part 2 of the CSI report. Part 2 of the CSI report may include a PMI corresponding to the non-zero wideband amplitude coefficients for each layer indicated in Part 1 of the CSI report. CSI reports on the long PUCCH and on the PUSCH may be calculated independently. Whether the UE can be configured with Type I CSI reporting on both the long PUCCH and the PUSCH is a UE capability. When reporting on the long PUCCH or PUSCH, the L1-RSRP and resource indicators for beam management may be mapped to Part 1.

[0114] The CSI reporting configuration can be configured per bandwidth part (BWP). Each CSI reporting configuration can be associated with a single downlink BWP. The CSI reporting setting configuration can define the CSI reporting band as a subset of the subbands of the BWP. The associated DL BWP may be indicated by a higher layer parameter (e.g., bwp-Id) in the CSI reporting configuration for channel measurement and contains parameters for one CSI reporting band, such as codebook configuration, time domain behavior, frequency granularity of CSI, measurement restriction configuration, and CSI-related parameters to be reported by the UE. Each CSI resource setting can be located in a DLBWP identified by a higher layer parameter, and all CSI resource settings can be linked to a CSI reporting setting with the same DLBWP.

[0115] Aspects related to link adaptation and CSI reporting

[0116] Fig. 9 An example process flow 900 for CSI reporting and link adaptation is depicted. As shown, a network entity 902 (e.g., such as a Figure 1 and Figure 3 BS 102 depicted and described) to UE 904 at 906 (e.g., such as with respect to Figure 1 and Figure 3 The UE 104 depicted and described sends CSI-RS. T CSI-RS ports are used to send CSI-RS.

[0117] At 908, UE 904 performs downlink channel estimation. In some examples, UE 904 monitors and receives CSI-RS and performs downlink channel estimation based on the CSI reporting configuration. For example, UE 904 may estimate (H)M R ×M T .

[0118] At 910, the UE 904 calculates the CSI, including RI, PMI, and CQI. At 912, the UE 904 reports the CSI to the network entity 902.

[0119] At 914, the network entity 902 determines the schedule, rank, precoding matrix, and modulation and coding scheme (MCS). From rank-1 to rank-R, the precoder and rank selection for a given codebook can be determined by {{P 1 (0),...,P 1 (L 1 –1)},...,{P R (0),...,P R (L R –1)}} is given. It can be determined that H and P r (i) Spectral efficiency SE est (H,P r (i)). CQI calculation can be conditioned on the optimal rank, R* and pre-decoder, P R* (i*):(R*,i)=argmax r,i SE est (H,P r (i)), and CQI* = f(SE est (H,P R (i*)).

[0120] At 916, the network entity 902 transmits the PDCCH and / or PDSCH according to the determined scheduling, rank, precoding matrix, and / or MCS.

[0121] Aspects related to multiple codebook CSI reporting

[0122] In some cases, a CSI report configuration (e.g., such as CSI report configuration 602) includes a codebook configuration that configures multiple codebooks, such as FIG. 8A to FIG. 8B Any of the codebook configurations in Tables 800A and 800B illustrated in . Each codebook may be associated with an antenna port configuration (N1, N2) or (Ng, N1, N2), a beam restriction, and an RI restriction. In an illustrative example, the codebook configuration may indicate a first codebook configuration (N1, N2) = (4, 4) with a first beam restriction and an RI restriction, a second codebook configuration (N1, N2) = (2, 1) with a second beam restriction and an RI restriction, a third codebook configuration (N1, N2) = (2, 2) with a third beam restriction and an RI restriction, and a fourth codebook configuration (N1, N2) = (4, 2) with a fourth beam restriction and an RI restriction. In some examples, resources for CSI measurement may be shared between codebook configurations.

[0123] In the case where multiple codebooks are configured, the UE (e.g., such as with respect to Figure 1 and Figure 3 The UE 104 depicted and described may provide a network (e.g., such as with respect to Figure 1 and Figure 3 The BS 102 depicted and described transmits a CSI report, where the CSI is associated with a subset of a codebook. For example, the UE calculates the CSI for each of the configured codebooks. The UE may rank the CSI based on one or more factors, such as spectral efficiency. The UE may report a subset of one or more of the best CSIs in the CSI report.

[0124] As discussed above, with the network energy saving configuration, the network can dynamically change the number of antenna ports to adapt to the traffic and save energy. With multiple configured codebooks, the UE can report CSI based on a subset of the codebook depending on the number of antenna ports. In some examples, the network entity receiving the CSI can consider one of the codebooks as a primary codebook and one or more of the other codebooks as secondary codebooks. In some examples, the primary codebook is associated with the current network antenna configuration, and the secondary codebook is associated with a different network antenna configuration that the network can use for dynamic link adaptation.

[0125] The UE may be configured to report both wideband CQI and subband CQI for each in the codebook, possibly resulting in a large report size. In some cases, the PUCCH resources available to the UE may not be sufficient to carry bits for reporting CSI.

[0126] When the UE is configured to report CSI-RS with multiple codebooks, aspects of the present disclosure provide prioritization for reporting CSI. For example, the CodebookConfig parameter in the CSI-ReportConfig IE indicates multiple codebooks.

[0127] According to certain aspects, a CSI-RS report configuration that configures multiple codebooks may be configured as multiple different CSI-RS report configurations with different codebooks. Different CSI-RS report configurations with different codebooks may be configured in sequence. A priority for each of the different CSI-RS report configurations may be implicitly defined depending on the CSI-RS report configuration sequence.

[0128] According to certain aspects, a CSI-RS report configuration for configuring multiple codebooks may be configured by a single CSI-RS report configuration. Therefore, the UE and the network need to determine the prioritization of reporting multiple codebooks. In addition, the priorities of different codebooks may change depending on the current network operation. According to certain aspects, the priorities of different codebooks may be dynamically determined by the network depending on the load.

[0129] The UE may use the prioritization of the codebook to determine whether to discard or transmit the CSI associated with the codebook. For example, the UE may determine that the PUCCH resources are insufficient to carry all bits for reporting the CSI of all multiple configured codebooks. In this case, the UE may discard the CSI according to the corresponding priority of the corresponding codebook.

[0130] According to certain aspects, when the UE is configured with a CSI report configuration that configures multiple codebooks, the UE is also configured with a prioritization order for the multiple codebooks. For example, the UE may be an RRC configured with a prioritization order for multiple codebooks. In some examples, the codebook prioritization order is configured in the CSI report configuration. In some examples, the codebook prioritization order is configured separately from the CSI report configuration. In some examples, the prioritization order is configured explicitly. In an illustrative example, the CSI report configuration configures four codebooks: codebook A (e.g., 32-port antenna configuration), codebook B (e.g., 8-port antenna configuration), codebook C (e.g., 16-port antenna configuration), and codebook D (e.g., 4-port antenna configuration), and a priority order from high to low for the codebooks (codebook A, codebook B, codebook C, and codebook D).

[0131] According to certain aspects, when the UE is configured with a CSI reporting configuration that configures multiple codebooks, the network further indicates one of the codebooks as a primary codebook and the other codebooks as secondary codebooks.

[0132] In some aspects, the network explicitly indicates one of the multiple codebooks as the primary codebook, and the UE determines that the remaining portion of the multiple codebooks are secondary codebooks. In some examples, the UE determines or the network indicates to the UE that the primary codebook has a higher priority than the secondary codebook. In some examples, when the UE decides to discard CSI associated with one of the secondary codebooks, the UE discards CSI associated with all secondary codebooks of the secondary codebook.

[0133] In some aspects, the network explicitly indicates one of the multiple codebooks as the primary codebook and indicates a priority order for the remaining secondary codebooks. In some examples, the network configures the priority order of the multiple codebooks. In this example, regardless of the order of the primary codebooks in the configured priority order, the UE determines the primary codebook as the highest priority codebook, and the UE determines the remainder of the secondary codebooks according to the configured priority order. In some examples, the network configures multiple priority orders for multiple codebooks. For example, the network configures a priority of a secondary codebook different from the primary codebook for each codebook in the multiple codebooks.

[0134] In some aspects, the UE is configured or pre-configured with a rule for determining a priority order. In some examples, the priority order rule is an RRC configured at the UE. In some examples, the rule is included in the CSI report configuration. In some examples, the priority order rule is used to determine the priority order of multiple codebooks. In some examples, the priority order rule is used to determine the priority order of the secondary codebook.

[0135] In some examples, the priority order rule specifies that the priority order is based on the relative number of CSI-RS antenna ports associated with the codebook. For example, the priority order rule may indicate that a codebook associated with a larger number of antenna ports has a higher priority than a codebook associated with a smaller number of antenna ports. In some examples, where a primary codebook is indicated, regardless of the number of CSI-RS antenna ports associated with the primary codebook, the UE determines that the primary codebook has the highest priority, and determines the priorities of the remaining secondary codebooks based on the corresponding number of CSI-RS antenna ports associated with the corresponding secondary codebooks.

[0136] In some cases, wideband CSI may have a different priority than subband CSI. In some examples, a CSI report configuration that configures multiple codebooks may configure a codebook for wideband CSI and another codebook for subband CSI. According to certain aspects, the priority order may be based on whether the codebook is associated with wideband CSI or associated with subband CSI. In some examples, the priority order for a given codebook may be different based on whether the codebook is configured for wideband CSI or for subband CSI. In an illustrative example, the priority order from highest priority to lowest priority is a 32-port codebook for wideband CSI; a 16-port codebook for wideband CSI; a 32-port codebook for subband CSI; an 8-port codebook for wideband CSI; a 16-port codebook for subband CSI; and an 8-port codebook for subband CSI.

[0137] In some examples, utilizing an RRC (e.g., semi-statically) configured priority order for multiple codebooks, the UE can automatically redetermine the priority order for CSI reporting when the network dynamically changes / adapts the current CSI-RS antenna port configuration.

[0138] In some examples, in addition to determining the priority order of multiple codebooks in the CSI reporting configuration, the UE may also determine the relative priority of the codebooks configured by different CSI reporting configurations.

[0139] Example Operations of Entities in a Communication Network

[0140] Fig.10A process flow 1000 is depicted for communication between a network entity 1002 and [other entities depicted], a user equipment (UE) 1004 and [other entities depicted] in a network. In some aspects, the network entity 1002 may be relative to Figure 1 and Figure 3 BS 102 as depicted and described or with respect to Figure 2 An example of a decomposed base station is depicted and described. Similarly, UE 1004 may be relative to Figure 1 and Figure 3 The depicted and described example of a UE 104. However, in other aspects, the UE 1004 may be another type of wireless communication device and the network entity 1002 may be another type of network entity or network node, such as those described herein.

[0141] As shown, at 1006, the network entity 1002 may transmit a CSI reporting configuration (eg, such as CSI reporting configuration 602) to the UE 1004. The CSI reporting configuration configures multiple codebooks. As described above, the CSI reporting configuration may be configured through RRC signaling.

[0142] At 1008, the network entity 1002 transmits a CSI-RS to the UE 1004. The CSI-RS may be based on the CSI report configuration. In some examples, before transmitting the CSI-RS at 1008, the network entity 1003 transmits (not shown) downlink control information (DCI) and / or a medium access control element (MAC-CE) that triggers the CSI-RS.

[0143] At 1010 , the UE 1004 performs downlink channel estimation based on the CSI-RS received at 1008 .

[0144] At 1012 , UE 1004 performs CSI calculation based on the channel estimate at 1010 .

[0145] At 1014, UE 1004 determines a priority order of multiple codebooks configured by the CSI reporting configuration received at 1006. In some examples, UE 1004 receives the priority order from network entity 1002. UE 1004 may receive the priority order from network entity 1002 in the CSI reporting configuration at 1006. In some examples, UE 1004 receives an explicit indication of the priority order. In some examples, UE 1004 receives an indication of a primary codebook of multiple codebooks. In some examples, UE 1004 receives an explicit priority order of the remaining secondary codebooks. In some examples, UE 1004 receives a priority order of the secondary codebooks separate from the primary codebook for each codebook. In some examples, UE 1004 determines the priority order based on a priority order rule. The priority order rule may be configured (e.g., via RRC with CSI reporting configuration or separately) or pre-configured (e.g., hard-coded or specified in a wireless standard). For example, a rule may specify that a codebook associated with a higher number of CSI-RS antenna ports has a higher priority than a codebook associated with a lower number of CSI-RS antenna ports. In some examples, the priority order of the codebooks is based on whether the codebook is for wideband CSI or for subband CSI.

[0146] At 1016, the UE 1004 reports the CSI to the network entity 1002 based on the CSI calculation at 1012 and the priority order determined at 1014. In some examples, the UE 1004 determines that the PUCCH resources are insufficient to send CSI for multiple codebooks configured by the CSI reporting configuration at 1006. In this case, the UE 1004 discards one or more codebooks based on the priority order. For example, the UE 1004 may discard CSI associated with one or more lowest priority codebooks until the remaining CSI fits in the PUCCH resources. In some examples, the UE 1004 discards CSI associated with all secondary codebooks of the secondary codebook.

[0147] Example Operation of User Equipment

[0148] Fig.11 The method for use by a UE such as Figure 1 and Figure 3 Method 1100 for performing wireless communication with UE 104).

[0149] Method 1100 begins at 1102, where a CSI reporting configuration is received that configures one or more CSI-RS resource sets. Each CSI-RS resource set includes one or more CSI-RS resources. The CSI reporting configuration also configures multiple codebooks for reporting CSI.

[0150] In one aspect, each codebook in the plurality of codebooks indicates one or more of: the number of CSI-RS antenna ports per CSI-RS resource, the number of antenna panels, the number of horizontal antenna elements of the antenna panel, the number of vertical antenna elements of the antenna panel, or a combination thereof.

[0151] Then, the method 1100 proceeds to step 1104, where a priority order for a plurality of codebooks is received.

[0152] In one aspect, receiving the priority order at 1104 includes receiving the priority order via RRC signaling.

[0153] In one aspect, receiving the priority order at 1104 includes receiving the priority order with a CSI reporting configuration.

[0154] In one aspect, receiving the priority order at 1104 includes receiving an explicit indication of a priority level for each of the plurality of codebooks.

[0155] In one aspect, receiving the priority order at 1104 includes receiving an indication of a codebook among the plurality of codebooks as a primary codebook.

[0156] In one aspect, the method 1100 further includes: determining other codebooks in the plurality of codebooks as secondary codebooks; and determining that the primary codebook is associated with a higher priority than the secondary codebook.

[0157] In one aspect, receiving the priority order at 1104 further comprises receiving a priority order of the secondary codebooks.

[0158] In one aspect, receiving the priority order of the secondary codebooks at 1104 includes: receiving a configuration of a priority order of the plurality of codebooks; determining the primary codebook as the highest priority codebook regardless of the configuration of the priority order; and determining the priority of the secondary codebook according to the configuration of the priority order.

[0159] In one aspect, receiving the priority order of the secondary codebooks at 1104 includes receiving a plurality of priority orders, each priority order of the plurality of priority orders including a priority order of the secondary codebooks associated with a different codebook of the plurality of codebooks as the primary codebook.

[0160] In one aspect, receiving the priority order at 1104 includes receiving a priority order rule, and determining the priority order based on the priority order rule.

[0161] In one aspect, the priority order rule is based on the number of CSI-RS ports associated with each codebook in the plurality of codebooks.

[0162] In one aspect, the priority order of each codebook in the plurality of codebooks is based on whether the codebook is for wideband CSI or for subband CSI.

[0163] Then, the method 1100 proceeds to step 1106, where the CSI is reported based on the CSI reporting configuration and the priority order.

[0164] In one aspect, CSI is reported based on the CSI reporting configuration and the priority order at 1106 , it is determined at 1108 that PUCCH resources are insufficient to send CSI for multiple codebooks, and CSI for one or more codebooks is dropped based on the priority order at 1110 .

[0165] In one aspect, reporting CSI based on the CSI reporting configuration and the priority order at 1106 includes: determining that PUCCH resources are insufficient to send CSI for multiple codebooks; and discarding CSI for all secondary codebooks for the secondary codebook.

[0166] In one aspect, method 1100 or any aspect related thereto may be performed by an apparatus such as Fig.13 The method 1100 is performed by a communication device 1300 that includes various components operable to, configured to, or adapted to perform the method 1100. The communication device 1300 is described in more detail below.

[0167] It should be noted that Fig.11 This is merely one example of a method, and other methods including fewer, additional, or alternative steps may also be consistent with the present disclosure.

[0168] Example Operations of Network Entities

[0169] Fig.12 A method for transmitting data to a network entity such as Figure 1 and Figure 3 BS102 or as relative to Figure 2 A method 1200 for performing wireless communications using a decomposed base station) as discussed above.

[0170] Method 1200 begins at 1202, where a CSI reporting configuration is outputted to configure one or more CSI-RS resource sets for a UE. Each CSI-RS resource set includes one or more CSI-RS resources. The CSI reporting configuration also configures a plurality of codebooks for reporting CSI for the UE.

[0171] In one aspect, herein, each codebook in the plurality of codebooks indicates one or more of: the number of CSI-RS antenna ports per CSI-RS resource, the number of antenna panels, the number of horizontal antenna elements of the antenna panel, the number of vertical antenna elements of the antenna panel, or a combination thereof.

[0172] Then, the method 1200 proceeds to step 1204, where a priority order for the plurality of codebooks is output.

[0173] In one aspect, outputting the priority order at 1204 includes outputting the priority order via radio resource control (RRC) signaling.

[0174] In one aspect, outputting the priority order at 1204 includes outputting the priority order with a CSI report configuration.

[0175] In one aspect, outputting the priority order at 1204 includes outputting an explicit indication of a priority level for each codebook in the plurality of codebooks.

[0176] In one aspect, outputting the priority order at 1204 includes outputting an indication of a codebook among the plurality of codebooks as a primary codebook.

[0177] In one aspect, the method 1200 further includes: outputting an indication that other codebooks in the plurality of codebooks are secondary codebooks; and outputting an indication that the primary codebook is associated with a higher priority than the secondary codebook.

[0178] In one aspect, outputting the priority order at 1204 includes outputting the priority order of other codebooks in the plurality of codebooks.

[0179] In one aspect, outputting the priority order of the other codebooks includes outputting the configuration of the priority order of the plurality of codebooks. The primary codebook is the highest priority codebook regardless of the configuration of the priority order.

[0180] In one aspect, outputting the priority order of the other codebooks includes: outputting a plurality of priority orders, each of the plurality of priority orders including a priority order of a secondary codebook associated with a different codebook among the plurality of codebooks as a primary codebook.

[0181] In one aspect, outputting the priority order at 1204 includes outputting priority order rules.

[0182] In one aspect, the priority order rule is based on the number of CSI-RS ports associated with each codebook in the plurality of codebooks.

[0183] In one aspect, the priority order of each codebook in the plurality of codebooks is based on whether the codebook is for wideband CSI or for subband CSI.

[0184] Then, the method 1200 proceeds to step 1206, where a CSI report is obtained from the UE based on the CSI report configuration and the priority order.

[0185] In one aspect, method 1200 or any aspect related thereto may be performed by an apparatus such as Fig.14 The method 1200 is performed by a communication device 1400 that includes various components operable to, configured to, or adapted to perform the method 1200. The communication device 1400 is described in more detail below.

[0186] It should be noted that Fig.12 This is merely one example of a method, and other methods including fewer, additional, or alternative steps may also be consistent with the present disclosure.

[0187] Example Communication Device

[0188] Fig.13 Depicted are aspects of an example communication device 1300. In some aspects, the communication device 1300 is user equipment, such as described above with respect to Figure 1 and Figure 3 UE 104 is described.

[0189] The communication device 1300 includes a processing system 1302 coupled to a transceiver 1308 (e.g., a transmitter and / or a receiver). The transceiver 1308 is configured to transmit and receive signals for the communication device 1300, such as various signals as described herein, via an antenna 1310. The processing system 1302 may be configured to perform processing functions for the communication device 1300, including processing signals received and / or to be transmitted by the communication device 1300.

[0190] The processing system 1302 includes one or more processors 1320. In various aspects, such as with respect to Figure 3 As depicted, the one or more processors 1320 may represent one or more of the receive processor 358, the transmit processor 364, the TX MIMO processor 366, and / or the controller / processor 380. The one or more processors 1320 are coupled to the computer-readable medium / memory 1330 via the bus 1306. In certain aspects, the computer-readable medium / memory 1330 is configured to store instructions (e.g., computer-executable code) that, when executed by the one or more processors 1320, cause the one or more processors 1320 to perform operations with respect to the computer-readable medium / memory 1330. Fig.11 The described method 1100 or any aspect related thereto. It should be noted that reference to a processor performing a function of the communication device 1300 may include one or more processors performing that function of the communication device 1300.

[0191] In the depicted example, the computer readable medium / memory 1330 stores code (e.g., executable instructions) for receiving 1331, code for reporting 1332, code for determining 1333, and code for discarding 1334. Processing of the codes 1331-1334 may cause the communication device 1300 to perform operations relative to Fig.11 The method 1100 described herein or any aspect related thereto.

[0192] The one or more processors 1320 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1330, including circuits for receiving 1321, reporting 1322, determining 1323, and discarding 1324. Processing performed by the circuits 1321-1324 may enable the communication device 1300 to perform operations relative to Fig.11 The method 1100 described herein or any aspect related thereto.

[0193] The various components of the communication device 1300 may provide for performing Fig.11 The components of the described method 1100 or any aspect thereof. For example, the components for sending, transmitting, or outputting for sending may include Figure 3 The transceiver 354 and / or antenna 352 and / or Fig.13 The transceiver 1308 and antenna 1310 of the communication device 1300 in FIG. 1304 may include Figure 3 The transceiver 354 and / or antenna 352 and / or Fig.13 The transceiver 1308 and antenna 1310 of the communication device 1300 in FIG.

[0194] Fig.14 Depicted are aspects of an example communication device. In some aspects, the communication device 1400 is a network entity such as Figure 1 and Figure 3 BS102 or as relative to Figure 2 The decomposed base station in question.

[0195] The communication device 1400 includes a processing system 1402 coupled to a transceiver 1408 (e.g., a transmitter and / or a receiver) and / or a network interface 1412. The transceiver 1408 is configured to transmit and receive signals for the communication device 1400 via an antenna 1410, such as various signals as described herein. The network interface 1412 is configured to transmit and receive signals for the communication device 1400 via a communication link (such as described herein such as with respect to Figure 2The processing system 1402 may be configured to perform processing functions of the communication device 1400, including processing signals received and / or to be transmitted by the communication device 1400.

[0196] Processing system 1402 includes one or more processors 1420. In various aspects, such as with respect to Figure 3 As described, the one or more processors 1420 may represent one or more of the receive processor 338, the transmit processor 320, the TX MIMO processor 330, and / or the controller / processor 340. The one or more processors 1420 are coupled to the computer-readable medium / memory 1430 via the bus 1406. In some aspects, the computer-readable medium / memory 1430 is configured to store instructions (e.g., computer-executable code) that, when executed by the one or more processors 1420, cause the one or more processors 1420 to perform operations with respect to the computer-readable medium / memory 1430. Fig.12 The method 1200 described herein or any aspect related thereto. It should be noted that reference to a processor of the communication device 1400 performing a function may include one or more processors of the communication device 1400 performing the function.

[0197] In the depicted example, the computer readable medium / memory 1430 stores code 1431 (eg, executable instructions) for outputting and code 1432 for obtaining. Processing of the codes 1431-1432 may cause the communication device 1400 to perform operations relative to Fig.12 The described method 1200 or any aspect related thereto.

[0198] The one or more processors 1420 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1430, including circuits 1421 for outputting and circuits 1422 for obtaining. Processing performed by the circuits 1421-1422 may enable the communication device 1400 to perform operations such as those described above with respect to Fig.12 The described method 1200 or any aspect related thereto.

[0199] The various components of the communication device 1400 may provide for performing the operations described in relation to Fig.12 The components of the described method 1200 or any aspect related thereto. The components for sending, transmitting, or outputting for sending may include Figure 3 The transceiver 332 and / or antenna 334 and / or Fig.14 The transceiver 1408 and antenna 1410 of the communication device 1400 in FIG. 1404 may include Figure 3The transceiver 332 and / or antenna 334 and / or Fig.14 The transceiver 1408 and antenna 1410 of the communication device 1400 in FIG.

[0200] Sample Clauses

[0201] Specific implementation examples are described in the following numbered clauses:

[0202] Clause 1: A method for wireless communication by a user equipment (UE), the method comprising: receiving a channel state information (CSI) reporting configuration, the channel state information (CSI) reporting configuration configuring one or more CSI reference signal (CSI-RS) resource sets, each CSI-RS resource set including one or more CSI-RS resources, and configuring multiple codebooks for reporting CSI; receiving a priority order for the multiple codebooks; and reporting CSI based on the CSI reporting configuration and the priority order.

[0203] Clause 2: The method of clause 1, wherein receiving the priority order comprises receiving the priority order via radio resource control (RRC) signaling.

[0204] Clause 3: A method as described in any one or more of clauses 1 to 2, wherein receiving the priority order comprises receiving the priority order with the CSI reporting configuration.

[0205] Clause 4: A method according to any one or more of clauses 1 to 3, wherein each of the multiple codebooks indicates one or more of the following: the number of CSI-RS antenna ports per CSI-RS resource, the number of antenna panels, the number of horizontal antenna elements of the antenna panel, the number of vertical antenna elements of the antenna panel, or a combination thereof.

[0206] Clause 5: A method according to any one or more of clauses 1 to 4, wherein reporting the CSI based on the CSI reporting configuration and the priority order includes: determining that physical uplink control channel (PUCCH) resources are insufficient to send CSI for the multiple codebooks; and discarding CSI for one or more codebooks based on the priority order.

[0207] Clause 6: A method as described in any one or more of clauses 1 to 5, wherein receiving the priority order comprises receiving an explicit indication of a priority level for each codebook in the plurality of codebooks.

[0208] Clause 7: A method as described in any one or more of clauses 1 to 6, wherein receiving the priority order comprises receiving an indication of one of the plurality of codebooks as a primary codebook.

[0209] Clause 8: The method of clause 7, further comprising: determining other codebooks in the plurality of codebooks as secondary codebooks; and determining that the primary codebook is associated with a higher priority than the secondary codebook.

[0210] Clause 9: A method according to clause 8, wherein reporting the CSI based on the CSI reporting configuration and the priority order comprises: determining that a physical uplink control channel (PUCCH) resource is insufficient to send CSI for the multiple codebooks; and discarding the CSI for the sub-codebook for all sub-codebooks.

[0211] Clause 10: The method of any one or more of clauses 8 to 9, wherein receiving the priority order further comprises receiving a priority order of the secondary codebooks.

[0212] Clause 11: The method according to clause 10, wherein receiving the priority order of the secondary codebooks comprises: receiving a configuration of a priority order of the plurality of codebooks; determining the primary codebook as a highest priority codebook regardless of the configuration of the priority order; and determining the priority of the secondary codebook according to the configuration of the priority order.

[0213] Clause 12: A method according to any one or more of clauses 10 to 11, wherein receiving the priority order of the secondary codebook comprises: receiving a plurality of priority orders, each priority order in the plurality of priority orders comprising a priority order of a secondary codebook associated with a different codebook in the plurality of codebooks as the primary codebook.

[0214] Clause 13: The method of any one or more of clauses 1 to 12, wherein receiving the priority order comprises: receiving a priority order rule; and determining the priority order based on the priority order rule.

[0215] Clause 14: The method of clause 13, wherein the priority order rule is based on a number of CSI-RS ports associated with each codebook in the plurality of codebooks.

[0216] Clause 15: A method as described in any one or more of clauses 1 to 14, wherein the priority order of each codebook in the plurality of codebooks is based on whether the codebook is for wideband CSI or for subband CSI.

[0217] Clause 16: A method for wireless communication by a network entity, the method comprising: receiving a channel state information (CSI) report configuration, the channel state information (CSI) report configuration configuring one or more CSI reference signal (CSI-RS) resource sets for a user equipment (UE), each CSI-RS resource set including one or more CSI-RS resources, and configuring a plurality of codebooks for reporting CSI for the user equipment (UE); outputting a priority order for the plurality of codebooks; and obtaining a CSI report from the UE based on the CSI report configuration and the priority order.

[0218] Clause 17: The method of clause 16, wherein outputting the priority order comprises outputting the priority order via radio resource control (RRC) signaling.

[0219] Clause 18: A method as described in any one or more of clauses 16 to 17, wherein outputting the priority order comprises outputting the priority order with the CSI reporting configuration.

[0220] Clause 19: A method according to any one or more of clauses 16 to 18, wherein each of the multiple codebooks indicates one or more of the following: the number of CSI-RS antenna ports per CSI-RS resource, the number of antenna panels, the number of horizontal antenna elements of the antenna panel, the number of vertical antenna elements of the antenna panel, or a combination thereof.

[0221] Clause 20: A method as recited in any one or more of clauses 16 to 19, wherein outputting the priority order comprises outputting an explicit indication of a priority level for each codebook in the plurality of codebooks.

[0222] Clause 21: A method as described in any one or more of clauses 16 to 20, wherein outputting the priority order comprises outputting an indication of one of the plurality of codebooks as a primary codebook.

[0223] Clause 22: A method according to clause 21, the method further comprising: outputting an indication that other codebooks in the plurality of codebooks are secondary codebooks; and outputting an indication that the primary codebook is associated with a higher priority than the secondary codebook.

[0224] Clause 23: A method as described in any one or more of clauses 21 to 22, wherein outputting the priority order further comprises outputting the priority order of other codebooks in the plurality of codebooks.

[0225] Clause 24: The method of clause 23, wherein outputting the priority order of other codebooks comprises: outputting a configuration of the priority order of the plurality of codebooks, wherein the primary codebook is the highest priority codebook regardless of the configuration of the priority order.

[0226] Clause 25: A method according to any one or more of clauses 23 to 24, wherein outputting the priority order of other codebooks comprises: outputting a plurality of priority orders, each of the plurality of priority orders comprising a priority order of a secondary codebook associated with a different codebook in the plurality of codebooks as the primary codebook.

[0227] Clause 26: The method of any one or more of clauses 16 to 25, wherein outputting the priority order comprises outputting a priority order rule.

[0228] Clause 27: The method of clause 26, wherein the priority order rule is based on a number of CSI-RS ports associated with each codebook in the plurality of codebooks.

[0229] Clause 28: A method as set forth in any one or more of clauses 16 to 27, wherein the priority order of each codebook in the plurality of codebooks is based on whether the codebook is for wideband CSI or for subband CSI.

[0230] Clause 29: An apparatus, the apparatus comprising: a memory including executable instructions; and a processor configured to execute the executable instructions and cause the apparatus to perform the method according to any one of clauses 1 to 28.

[0231] Clause 30: An apparatus comprising means for performing the method of any of clauses 1 to 28.

[0232] Clause 31: A non-transitory computer readable medium comprising executable instructions which, when executed by a processor of an apparatus, cause the apparatus to perform the method of any one of clauses 1 to 28.

[0233] Clause 32: A computer program product embodied on a computer readable storage medium, the computer program product comprising code for performing the method according to any one of clauses 1 to 28.

[0234] Additional considerations

[0235] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. The examples discussed herein are not limited to the scope, applicability or aspects set forth in the claims. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. For example, without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Each example may ignore, replace or add each procedure or component as appropriate. For example, the described method may be performed in a different order than the described order, and various actions may be added, omitted or combined. In addition, features equivalent to some example descriptions may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionality, or structures and functionality that are supplemented or substituted for the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the present invention.

[0236] The various illustrative logical blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or performed using a general purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic components, discrete hardware components, or any combination thereof, designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC), or any other such configuration.

[0237] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items (including single members). As an example, "at least one of a, b, or c" is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination with multiple of the same elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0238] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Moreover, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. In addition, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0239] The method disclosed herein includes one or more actions for implementing the method. The method actions are interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of actions is specified, the order and / or use of specific actions may be modified without departing from the scope of the claims. In addition, the various operations of the method described above may be performed by any appropriate component capable of performing the corresponding function. The component may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors.

[0240] The following claims are not intended to be limited to the various aspects shown herein, but should be given the full scope consistent with the language of the claims. Within the claims, unless specifically stated otherwise, reference to an element in the singular form is not intended to mean "one and only one", but "one or more". Unless otherwise specifically stated, the term "some" refers to one or more. Any claim element is not interpreted according to the provisions of 35 U.S.C. § 112 (f) unless the element is explicitly stated using the phrase "parts for...". All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will be known later to a person of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims.

Claims

1. A method for wireless communication by a user equipment (UE), the method comprising: receiving a channel state information (CSI) reporting configuration, wherein the channel state information (CSI) reporting configuration configures one or more CSI reference signal (CSI-RS) resource sets, each CSI-RS resource set including one or more CSI-RS resources, and configures multiple codebooks for reporting CSI; receiving a priority order for the plurality of codebooks; as well as The CSI is reported based on the CSI reporting configuration and the priority order. 2 . The method of claim 1 , wherein receiving the priority order comprises receiving the priority order via radio resource control (RRC) signaling. 3 . The method of claim 1 , wherein receiving the priority order comprises receiving the priority order with the CSI reporting configuration.

4. The method of claim 1 , wherein each of the plurality of codebooks indicates one or more of: the number of CSI-RS antenna ports per CSI-RS resource, the number of antenna panels, the number of horizontal antenna elements of the antenna panel, the number of vertical antenna elements of the antenna panel, or a combination thereof.

5. The method of claim 1 , wherein reporting the CSI based on the CSI reporting configuration and the priority order comprises: determining that a physical uplink control channel (PUCCH) resource is insufficient to send CSI for the plurality of codebooks; as well as CSI for one or more codebooks is discarded based on the priority order.

6. The method of claim 1, wherein receiving the priority order comprises receiving an explicit indication of a priority level for each of the plurality of codebooks.

7. The method of claim 1, wherein receiving the priority order comprises receiving an indication of one of the plurality of codebooks as a primary codebook.

8. The method according to claim 7, further comprising: Determine other codebooks in the multiple codebooks as secondary codebooks; as well as It is determined that the primary codebook is associated with a higher priority than the secondary codebook.

9. The method of claim 8, wherein reporting the CSI based on the CSI reporting configuration and the priority order comprises: determining that a physical uplink control channel (PUCCH) resource is insufficient to send CSI for the plurality of codebooks; as well as The CSI for all the sub-codebooks in the sub-codebooks is discarded.

10. The method of claim 8, wherein receiving the priority order further comprises receiving the priority order of the secondary codebooks.

11. The method according to claim 10, wherein receiving the priority order of the secondary codebooks comprises: receiving a configuration of a priority order of the plurality of codebooks; determining the master codebook as a highest priority codebook regardless of the configuration of the priority order; as well as The priorities of the secondary codebooks are determined according to the configuration of the priority order.

12. The method according to claim 10, wherein receiving the priority order of the secondary codebooks comprises: A plurality of priority orders are received, each of the plurality of priority orders comprising a priority order of a secondary codebook associated with a different codebook among the plurality of codebooks as the primary codebook.

13. The method of claim 1 , wherein receiving the priority order comprises: Receive priority order rules; as well as The priority order is determined based on the priority order rule.

14. The method of claim 13, wherein the priority order rule is based on a number of CSI-RS ports associated with each codebook in the plurality of codebooks.

15. The method of claim 1, wherein the priority order of each codebook in the plurality of codebooks is based on whether the codebook is for wideband CSI or for subband CSI.

16. A method for wireless communication by a network entity, the method comprising: Outputting a channel state information (CSI) reporting configuration, wherein the channel state information (CSI) reporting configuration configures one or more CSI reference signal (CSI-RS) resource sets for a user equipment (UE), each CSI-RS resource set including one or more CSI-RS resources, and configuring a plurality of codebooks for reporting CSI for the user equipment (UE); outputting a priority order for the plurality of codebooks; as well as A CSI report is obtained from the UE based on the CSI reporting configuration and the priority order.

17. The method of claim 16, wherein outputting the priority order comprises outputting the priority order via radio resource control (RRC) signaling.

18. The method of claim 16, wherein outputting the priority order comprises outputting the priority order with the CSI report configuration.

19. The method of claim 16, wherein each of the plurality of codebooks indicates one or more of: the number of CSI-RS antenna ports per CSI-RS resource, the number of antenna panels, the number of horizontal antenna elements of an antenna panel, the number of vertical antenna elements of an antenna panel, or a combination thereof.

20. The method of claim 16, wherein outputting the priority order comprises outputting an explicit indication of a priority level for each of the plurality of codebooks.

21. The method of claim 16, wherein outputting the priority order comprises outputting an indication of one of the plurality of codebooks as a primary codebook.

22. The method according to claim 21, further comprising: Outputting an indication that other codebooks in the plurality of codebooks are secondary codebooks; as well as Outputting an indication that the primary codebook is associated with a higher priority than the secondary codebook.

23. The method of claim 21, wherein outputting the priority order further comprises outputting the priority order of other codebooks in the plurality of codebooks.

24. The method according to claim 23, wherein outputting the priority order of other codebooks comprises: A configuration of a priority order of the plurality of codebooks is output, wherein the master codebook is a highest priority codebook regardless of the configuration of the priority order.

25. The method according to claim 23, wherein outputting the priority order of other codebooks comprises: A plurality of priority orders are output, each of the plurality of priority orders comprising a priority order of a secondary codebook associated with a different codebook among the plurality of codebooks as the primary codebook.

26. The method of claim 16, wherein outputting the priority order comprises outputting a priority order rule.

27. The method of claim 26, wherein the priority order rule is based on a number of CSI-RS ports associated with each codebook in the plurality of codebooks.

28. The method of claim 16, wherein the priority order of each codebook in the plurality of codebooks is based on whether the codebook is for wideband CSI or for subband CSI.

29. A user equipment (UE) configured for wireless communication, the user equipment (UE) comprising: a memory including computer executable instructions; as well as a processor configured to execute the computer executable instructions and cause the UE to: receiving a channel state information (CSI) reporting configuration, wherein the channel state information (CSI) reporting configuration configures one or more CSI reference signal (CSI-RS) resource sets, each CSI-RS resource set including one or more CSI-RS resources, and configures multiple codebooks for reporting CSI; receiving a priority order for the plurality of codebooks; as well as The CSI is reported based on the CSI reporting configuration and the priority order.

30. A network entity configured for wireless communication, the network entity comprising: a memory including computer executable instructions; as well as a processor configured to execute the computer executable instructions and cause the network entity to: Outputting a channel state information (CSI) reporting configuration, wherein the channel state information (CSI) reporting configuration configures one or more CSI reference signal (CSI-RS) resource sets for a user equipment (UE), each CSI-RS resource set including one or more CSI-RS resources, and configuring a plurality of codebooks for reporting CSI for the user equipment (UE); outputting a priority order for the plurality of codebooks; as well as A CSI report is obtained from the UE based on the CSI reporting configuration and the priority order.

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