WO2024057140A1 - Livre de codes d'informations d'état de canal unifié - Google Patents

Livre de codes d'informations d'état de canal unifié Download PDF

Info

Publication number
WO2024057140A1
WO2024057140A1 PCT/IB2023/058790 IB2023058790W WO2024057140A1 WO 2024057140 A1 WO2024057140 A1 WO 2024057140A1 IB 2023058790 W IB2023058790 W IB 2023058790W WO 2024057140 A1 WO2024057140 A1 WO 2024057140A1
Authority
WO
WIPO (PCT)
Prior art keywords
csi
pmi
layer
layer groups
segments
Prior art date
Application number
PCT/IB2023/058790
Other languages
English (en)
Inventor
Ahmed HINDY
Vijay Nangia
Original Assignee
Lenovo (Singapore) Pte. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lenovo (Singapore) Pte. Ltd. filed Critical Lenovo (Singapore) Pte. Ltd.
Publication of WO2024057140A1 publication Critical patent/WO2024057140A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0478—Special codebook structures directed to feedback optimisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0634—Antenna weights or vector/matrix coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable feedback

Definitions

  • a wireless communications system may include one or multiple network communication devices, such as base stations, which may be otherwise known as an eNodeB (eNB), a next- generation NodeB (gNB), or other suitable terminology.
  • eNB eNodeB
  • gNB next- generation NodeB
  • Each of the network communication devices may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE), or other suitable terminology.
  • the wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communications system, such as time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers).
  • the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G)).
  • multiple panels, transmission reception points (TRPs), and/or remote radio heads (RRHs) are nodes within a cell that may communicate simultaneously with one UE to enhance coverage, throughput, and reliability.
  • the multiple panels, TRPs, and/or RRHs may not be co-located (i.e., are placed in separate, remote locations). Communicating with the same UE via multiple nodes comes at the expense of excessive control Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • SMM920220117-WO-PCT 2 signaling between the network devices and the so as to communicate the best transmission configuration, such as whether to support multi-point transmission, and if so, which panel would operate simultaneously, in addition to a possibly super-linear increase in the amount of CSI feedback reported from the UE to the network, since a distinct codebook may be needed for each point.
  • SUMMARY [0005] The present disclosure relates to methods, apparatuses, and systems that support unified CSI codebook, such as a unified CSI codebook design for both coherent and non-coherent joint transmission.
  • the efficiency of CSI feedback overhead is improved by allocating different quantization resolution to precoders corresponding to two subsets of TRPs, based on their channel gains to the UE, and/or by allocating a different number of non- zero coefficients corresponding to the two subsets of TRPs, based on their channel gains to the UE.
  • Aspects of the disclosure are directed to a unified CSI codebook design that supports both coherent joint transmission (CJT) and non-coherent joint transmission (NCJT) pre-coded transmission in NR.
  • a unified codebook design for physical downlink shared channel (PDSCH) pre-coded transmission across a K-number of TRPs can be implemented that supports both CJT and NCJT up to the K-number of TRPs.
  • CJT the up to K-number of TRPs transmit a same set of PDSCH layers
  • NCJT the K-number of TRPs transmit different sets of PDSCH layers.
  • a CSI feedback overhead reduction approach is applied that provides a concise CSI feedback overhead when toggling between CJT and NCJT modes, to avoid the CSI feedback overhead being parametrized by the largest of the two transmission modes.
  • a UE receives a first signaling from a base station as a CSI reporting setting.
  • the CSI reporting setting indicates a channel measurement resource (CMR) for at least two CSI-reference signal (CSI-RS) segments corresponding to multiple precoder matrix indicator (PMI) layers associated with one or more PMI layer groups.
  • CMR channel measurement resource
  • PMI precoder matrix indicator
  • the UE transmits a second signaling to the base station as a CSI report in one of two Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 3 CSI report modes.
  • the CSI report includes an of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, where the CSI report mode is based on the number of the one or more PMI layer groups.
  • a base station transmits a first signaling to a UE as a CSI reporting setting.
  • the CSI reporting setting indicates a CMR for at least two CSI-RS segments corresponding to multiple PMI layers associated with one or more PMI layer groups.
  • the base station receives a second signaling from the UE as a CSI report in one of two CSI report modes.
  • the CSI report includes an indication of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, where the CSI report mode is based on the number of the one or more PMI layer groups.
  • FIG.2 illustrates an example of multiple panels in a coordination cluster connected to a central unit, as related to unified CSI codebook in accordance with aspects of the present disclosure.
  • FIG.3 illustrates examples of block-diagonal matrices, as related to unified CSI codebook in accordance with aspects of the present disclosure.
  • FIG.4 illustrates an example implementation of ASN.1 code for triggering more than one CSI report within CSI-ReportConfig reporting setting information element (IE), which supports unified CSI codebook in accordance with aspects of the present disclosure.
  • IE CSI-ReportConfig reporting setting information element
  • FIG.5 illustrates an example implementation of ASN.1 code for triggering two CSI reports within CodebookConfig codebook configuration IE, which supports unified CSI codebook in accordance with aspects of the present disclosure.
  • FIGs.6 and 7 illustrate an example of a block diagram of devices that supports unified CSI codebook in accordance with aspects of the present disclosure.
  • Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 4
  • FIGs.8 through 11 illustrate of methods that support unified CSI codebook in accordance with aspects of the present disclosure.
  • multiple panels, transmission reception points (TRPs), and/or remote radio heads (RRHs) are nodes within a cell that may communicate simultaneously with one UE to enhance coverage, throughput, and reliability.
  • the multiple panels, TRPs, and/or RRHs may not be co-located (i.e., are placed in separate, remote locations).
  • Communicating with the same UE via multiple nodes comes at the expense of excessive control signaling between the network devices and the UE, so as to communicate the best transmission configuration, such as whether to support multi-point transmission, and if so, which panel would operate simultaneously, in addition to a possibly super-linear increase in the amount of CSI feedback reported from the UE to the network, since a distinct codebook may be needed for each point.
  • Currently i.e., Rel.16 Type-II codebook with high resolution
  • the number of PMI bits fed back from the UE to a gNB via uplink control information (UCI) can be very large (e.g., greater than 1000 bits at large bandwidth), even for a single-point transmission.
  • a purpose of multi-panel transmission is to improve the spectral efficiency, as well as the reliability and robustness of the connection in different scenarios, and covers both ideal and nonideal backhaul.
  • URLLC ultra-reliable low-latency communication
  • a UE can be served by multiple TRPs forming a coordination cluster, and may be connected to a central processing unit.
  • joint transmissions from a K-number of panels and/or TRPs may be of form Mode1 or Mode2.
  • each of the K-number of panels and/or TRPs transmit a same sequence of data (e.g., signals corresponding to a same set of PDSCH layers), and a UE combines the signals received from the K-number of panels to realize the power gain.
  • This Mode1 assumes full phase coherence across the K-number of panels and/or TRPs.
  • different panels and/or TRPs of the K-number of panels and/or TRPs transmit different sequences of data (e.g., signals corresponding to at least two sets of PDSCH layers), and the UE combines the signals Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • This Mode2 can be used in the event of full phase coherence across the K-number of panels and/or TRPs (i.e., for CJT across the K-number of panels and/or TRPs), and can also be applied in the event of non-coherence (i.e., NCJT across the K-number of panels and/or TRPs), under which specific setups of transmission of the PDSCH layers across the K-number of panels and/or TRPs are considered.
  • aspects of the disclosure are directed to a unified CSI codebook design that can be applied for both Mode1 and Mode2 of PDSCH transmission across a K-number of TRPs.
  • a unified CSI codebook design supports both CJT and NCJT up to the K-number of TRPs, where CJT up to the K-number of TRPs transmits a same set of PDSCH layers, and NCJT up to the K-number of TRPs transmits different sets of PDSCH layers.
  • a CSI feedback overhead reduction approach is applied to enable a concise CSI feedback overhead when toggling between the CJT and NCJT modes, such as to avoid the CSI feedback overhead being parametrized by the largest of the two transmission modes.
  • the efficiency of CSI feedback overhead is improved by allocating different quantization resolution to precoders corresponding to two subsets of TRPs, based on their channel gains to the UE, and/or by allocating a different number of non-zero coefficients corresponding to the two subsets of TRPs, based on their channel gains to the UE.
  • FIG.1 illustrates an example of a wireless communications system 100 that supports unified CSI codebook in accordance with aspects of the present disclosure.
  • the wireless communications system 100 may include one or more network entities 102, one or more UEs 104, a core network 106, and a packet data network 108.
  • the wireless communications system 100 may support various radio access technologies.
  • the wireless communications system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network.
  • LTE-A LTE-Advanced
  • the wireless system 100 may be a 5G network, such as an NR network.
  • the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20.
  • IEEE Institute of Electrical and Electronics Engineers
  • the wireless communications system 100 may support radio access technologies beyond 5G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA), frequency division multiple access (FDMA), or code division multiple access (CDMA), etc.
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • CDMA code division multiple access
  • the one or more network entities 102 may be dispersed throughout a geographic region to form the wireless communications system 100.
  • One or more of the network entities 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a radio access network (RAN), a base transceiver station, an access point, a NodeB, an eNodeB (eNB), a next-generation NodeB (gNB), or other suitable terminology.
  • a network entity 102 and a UE 104 may communicate via a communication link 110, which may be a wireless or wired connection.
  • a network entity 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.
  • a network entity 102 may provide a geographic coverage area 112 for which the network entity 102 may support services (e.g., voice, video, packet data, messaging, broadcast, etc.) for one or more UEs 104 within the geographic coverage area 112.
  • a network entity 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc.) according to one or multiple radio access technologies.
  • a network entity 102 may be moveable, for example, a satellite associated with a non-terrestrial network.
  • different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas 112 may be associated with different network entities 102.
  • the one or more UEs 104 may be throughout a geographic region of the wireless communications system 100.
  • a UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a remote unit, a handheld device, or a subscriber device, or some other suitable terminology.
  • the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples. In some implementations, a UE 104 may be stationary in the wireless communications system 100. In some other implementations, a UE 104 may be mobile in the wireless communications system 100. [0026] The one or more UEs 104 may be devices in different forms or having different capabilities. Some examples of UEs 104 are illustrated in FIG.1.
  • a UE 104 may be capable of communicating with various types of devices, such as the network entities 102, other UEs 104, or network equipment (e.g., the core network 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network equipment), as shown in FIG.1. Additionally, or alternatively, a UE 104 may support communication with other network entities 102 or UEs 104, which may act as relays in the wireless communications system 100. [0027] A UE 104 may also be able to support wireless communication directly with other UEs 104 over a communication link 114.
  • network equipment e.g., the core network 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network equipment
  • IAB integrated access and backhaul
  • a UE 104 may also be able to support wireless communication directly with other UEs 104 over a communication link 114.
  • a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link.
  • D2D device-to-device
  • the communication link 114 may be referred to as a sidelink.
  • a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.
  • a network entity 102 may support communications with the core network 106, or with another network entity 102, or both.
  • a network entity 102 may interface with the core network 106 through one or more backhaul links 116 (e.g., via an S1, N2, or another network interface).
  • the network entities 102 may communicate with each other over the backhaul links 116 (e.g., via an X2, Xn, or another network interface).
  • the network entities 102 may communicate with each other directly (e.g., between the network entities 102).
  • the network entities 102 may communicate with each other or indirectly Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 8 (e.g., via the core network 106).
  • one or more network entities 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC).
  • An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs).
  • TRPs transmission-reception points
  • a network entity 102 may be configured in a disaggregated architecture, which may be configured to utilize a protocol stack physically or logically distributed among two or more network entities 102, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)).
  • IAB integrated access backhaul
  • O-RAN open RAN
  • vRAN virtualized RAN
  • C-RAN cloud RAN
  • a network entity 102 may include one or more of a central unit (CU), a distributed unit (DU), a radio unit (RU), a RAN Intelligent Controller (RIC) (e.g., a Near-Real Time RIC (Near-RT RIC), a Non-Real Time RIC (Non-RT RIC)), a Service Management and Orchestration (SMO) system, or any combination thereof.
  • An RU may also be referred to as a radio head, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmission reception point (TRP).
  • One or more components of the network entities 102 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 102 may be located in distributed locations (e.g., separate physical locations).
  • one or more network entities 102 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU), a virtual DU (VDU), a virtual RU (VRU)).
  • VCU virtual CU
  • VDU virtual DU
  • VRU virtual RU
  • Split of functionality between a CU, a DU, and an RU may be flexible and may support different functionalities depending upon which functions (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof) are performed at a CU, a DU, or an RU.
  • functions e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof
  • a functional split of a protocol stack may be employed between a CU and a DU such that the CU may support one or more layers of the protocol stack and the DU may support one or more different layers of the protocol stack.
  • the CU may host upper protocol layer (e.g., a layer 3 (L3), a layer 2 (L2)) functionality and signaling (e.g., Radio Resource Control (RRC), service data adaption protocol (SDAP), Packet Data Convergence Protocol (PDCP)).
  • RRC Radio Resource Control
  • SDAP service data adaption protocol
  • PDCP Packet Data Convergence Protocol
  • the CU may be connected to one or more Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • SMM920220117-WO-PCT 9 DUs or RUs and the one or more DUs or RUs host lower protocol layers, such as a layer 1 (L1) (e.g., physical (PHY) layer) or an L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU.
  • L1 e.g., physical (PHY) layer
  • L2 e.g., radio link control (RLC) layer, medium access control (MAC) layer
  • a functional split of the protocol stack may be employed between a DU and an RU such that the DU may support one or more layers of the protocol stack and the RU may support one or more different layers of the protocol stack.
  • the DU may support one or multiple different cells (e.g., via one or more RUs).
  • a functional split between a CU and a DU, or between a DU and an RU may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU, a DU, or an RU, while other functions of the protocol layer are performed by a different one of the CU, the DU, or the RU).
  • a CU may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions.
  • CU-CP CU control plane
  • CU-UP CU user plane
  • a CU may be connected to one or more DUs via a midhaul communication link (e.g., F1, F1-c, F1-u), and a DU may be connected to one or more RUs via a fronthaul communication link (e.g., open fronthaul (FH) interface).
  • a midhaul communication link or a fronthaul communication link may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 102 that are in communication via such communication links.
  • the core network 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions.
  • the core network 106 may be an evolved packet core (EPC), or a 5G core (5GC), which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management functions (AMF)) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW), a Packet Data Network (PDN) gateway (P- GW), or a user plane function (UPF)).
  • EPC evolved packet core
  • 5GC 5G core
  • EPC evolved packet core
  • 5GC 5G core
  • MME mobility management entity
  • AMF access and mobility management functions
  • S-GW serving gateway
  • PDN gateway Packet Data Network gateway
  • UPF user plane function
  • control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc.) for the one or more UEs 104 served by the one or more network entities 102 associated with the core network 106.
  • NAS non-access stratum
  • the core network 106 may with the packet data network 108 over one or more backhaul links 116 (e.g., via an S1, N2, or another network interface).
  • the packet data network 108 may include an application server 118.
  • one or more UEs 104 may communicate with the application server 118.
  • a UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the core network 106 via a network entity 102.
  • the core network 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server 118 using the established session (e.g., the established PDU session).
  • the PDU session may be an example of a logical connection between the UE 104 and the core network 106 (e.g., one or more network functions of the core network 106).
  • the network entities 102 and the UEs 104 may use resources of the wireless communications system 100, such as time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) to perform various operations (e.g., wireless communications).
  • the network entities 102 and the UEs 104 may support different resource structures.
  • the network entities 102 and the UEs 104 may support different frame structures.
  • the network entities 102 and the UEs 104 may support a single frame structure.
  • the network entities 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures).
  • the network entities 102 and the UEs 104 may support various frame structures based on one or more numerologies.
  • One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix.
  • Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 11 [0038]
  • a time interval of a resource (e.g., a resource) may be organized according to frames (also referred to as radio frames).
  • Each frame may have a duration, for example, a 10 millisecond (ms) duration.
  • each frame may include multiple subframes.
  • each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration.
  • each frame may have the same duration.
  • each subframe of a frame may have the same duration.
  • a time interval of a resource may be organized according to slots.
  • a subframe may include a number (e.g., quantity) of slots.
  • Each slot may include a number (e.g., quantity) of symbols (e.g., orthogonal frequency division multiplexing (OFDM) symbols).
  • OFDM orthogonal frequency division multiplexing
  • the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols.
  • a slot may include 12 symbols.
  • EM electromagnetic
  • the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz – 7.125 GHz), FR2 (24.25 GHz – 52.6 GHz), FR3 (7.125 GHz – 24.25 GHz), FR4 (52.6 GHz – 114.25 GHz), FR4a or FR4-1 (52.6 GHz – 71 GHz), and FR5 (114.25 GHz – 300 GHz).
  • the network entities 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands.
  • FR1 may be used by the network entities 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data).
  • FR2 may be used by the network entities 102 and the UEs 104, among other equipment or devices for short- range, high data rate capabilities.
  • FR1 may be associated with one or numerologies (e.g., at least three numerologies).
  • FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies).
  • one or more of the network entities 102 and the UEs 104 are operable to implement various aspects of unified CSI codebook, as described herein.
  • a network entity 102 e.g., a base station
  • communicates e.g., transmits
  • the CSI reporting setting 120 indicates various information, such as a CMR for at least two CSI-RS segments corresponding to multiple PMI layers associated with one or more PMI layer groups.
  • the UE 104 receives the CSI reporting setting 120 transmitted from the network entity 102, and can generate a CSI report 122.
  • the UE transmits the CSI report 122 to the network entity 102 in one of two CSI report modes 124.
  • the CSI report 122 includes an indication of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, where the CSI report mode 124 is based on the number of the one or more PMI layer groups. Accordingly, the network entity 102 receives as the CSI report in the CSI report mode from the UE.
  • multiple panels, TRPs, and/or RRHs are nodes within a cell that may communicate simultaneously with one UE to enhance coverage, throughput, and reliability. The multiple panels, TRPs, and/or RRHs may not be co-located (i.e., are placed in separate, remote locations).
  • Communicating with the same UE via multiple nodes comes at the expense of excessive control signaling between the network devices and the UE, so as to communicate the best transmission configuration, such as whether to support multi-point transmission, and if so, which panel would operate simultaneously, in addition to a possibly super- linear increase in the amount of CSI feedback reported from the UE to the network, since a distinct codebook may be needed for each point.
  • the number of PMI bits fed back from the UE to a gNB via UCI can be very large (e.g., greater than 1000 bits at large Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • FIG.2 illustrates an example 200 of multiple panels 202 in a coordination cluster connected to a central processing unit 204, as related to unified CSI codebook in accordance with aspects of the present disclosure.
  • URLLC under multi-panel transmission was agreed, where a UE can be served by multiple TRPs forming a coordination cluster, and may be connected to a central processing unit.
  • joint transmissions from a K-number of panels and/or TRPs may be of form Mode1 or Mode2.
  • each of the K-number of panels and/or TRPs transmit a same sequence of data (e.g., signals corresponding to a same set of PDSCH layers), and a UE combines the signals received from the K- number of panels to realize the power gain.
  • This Mode1 assumes full phase coherence across the K- number of panels and/or TRPs.
  • different panels and/or TRPs of the K-number of panels and/or TRPs transmit different sequences of data (e.g., signals corresponding to at least two sets of PDSCH layers), and the UE combines the signals received from the K-number of panels and/or TRPs to realize the multiplexing gain.
  • sequences of data e.g., signals corresponding to at least two sets of PDSCH layers
  • This Mode2 can be used in the event of full phase coherence across the K-number of panels and/or TRPs (i.e., for CJT across the K-number of panels and/or TRPs), and can also be applied in the event of non-coherence (i.e., NCJT across the K-number of panels and/or TRPs), under which specific setups of transmission of the PDSCH layers across the K-number of panels and/or TRPs are considered.
  • terms used interchangeably include TRP, panel, set of antennas, set of antenna ports, uniform linear array, cell, node, radio head, communication (e.g., signals/channels) associated with a control resource set (CORESET) pool, and communication associated with a transmission configuration indicator (TCI) state from a transmission configuration comprising at least two TCI states.
  • CORESET control resource set
  • TCI transmission configuration indicator
  • the codebook type used is arbitrary, and flexibility is allotted for the use of different codebook types (e.g., Type-II Rel.16 codebook, Type-II Rel.17 codebook, etc.).
  • Rel.16 Type-II codebook for each TRP of the multiple TRPs has the drawback of Type-II codebook has significantly large CSI feedback overhead corresponding to high-resolution quantization of coefficients due to reporting a per-layer bitmap for each TRP, although each TRP may transmit only a subset of the PDSCH layers.
  • a gNB is equipped with a 2D antenna array with N 1 , N 2 antenna ports per polarization placed horizontally and vertically, and communication occurs over N3 PMI sub-bands.
  • a PMI sub-band includes a set of resource blocks, and each resource block includes a set of subcarriers.
  • 2N 1 N 2 CSI-RS ports are utilized to enable DL channel estimation with high resolution for NR Rel.15 Type-II codebook.
  • a Discrete Fourier transform (DFT)-based CSI compression of the spatial domain is applied to L dimensions per polarization, where L ⁇ N 1 N 2 .
  • the indices of the 2L dimensions are referred as the spatial domain (SD) basis indices.
  • SD spatial domain
  • the 2N1N2xN3 codebook per layer takes on the form: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , where W 1 is a 2N 1 N 2 x2L block-diagonal matrix (L ⁇ N 1 N 2 ) with two identical diagonal blocks, i.e., ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , and B is an N1N2xL matrix with columns drawn from a 2D oversampled DFT matrix, as follows: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ 1 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , ⁇ , Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • FIG.3 illustrates examples 300 of block-diagonal matrices, as related to unified CSI codebook in accordance with aspects of the present disclosure.
  • K For Type-II Port Selection codebook, only K (where K ⁇ 2N1N2) beamformed CSI-RS ports are utilized in downlink (DL) transmission, in order to reduce complexity.
  • the KxN 3 codebook matrix per layer takes on the form: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ . [0050]
  • W 2 follow the same structure as the conventional NR Rel.15 Type-II codebook and are layer specific.
  • the ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ is a Kx2L block-diagonal matrix with two identical diagonal blocks, i.e., ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , where ⁇ ⁇ ⁇ is a standard unit vector with
  • dPS is an RRC parameter which takes on the values ⁇ 1,2,3,4 ⁇ under the condition dPS ⁇ min(K/2, L), whereas mPS takes on the values ⁇ 0, ... , ⁇ ⁇ ⁇ ⁇ ⁇ 1 ⁇ and is reported as part of the UL CSI feedback overhead.
  • the W 1 ⁇ is common across all layers.
  • n PS parametrizes the location of the first “1” in the first column of E
  • dPS represents the row shift corresponding to different values of mPS.
  • the NR Rel.15 Type-I codebook is the baseline codebook for NR, with a variety of configurations. The most common utility of Rel.15 Type-I codebook is a special case of NR Rel.15 Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • NR Rel.16 Type-II codebook With reference to NR Rel.16 Type-II codebook, and assuming a gNB is equipped with a two-dimensional (2D) antenna array with N1, N2 antenna ports per polarization placed horizontally and vertically, and communication occurs over N 3 PMI sub-bands.
  • a PMI sub-band includes a set of resource blocks, and each resource block includes of a set of subcarriers.
  • 2N 1 N 2 N 3 CSI-RS ports are utilized to enable DL channel estimation with high resolution for NR Rel.16 Type-II codebook.
  • a DFT-based CSI compression of the spatial domain is applied to L dimensions per polarization, where L ⁇ N 1 N 2 .
  • each beam of the frequency-domain precoding vectors is transformed using an inverse DFT matrix to the delay domain, and the magnitude and phase values of a subset of the delay-domain coefficients are selected and fed back to the gNB as part of the CSI report.
  • the 2N1N2xN3 codebook per layer takes on the form: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , where W 1 is a 2N 1 N 2 x2L block-diagonal matrix (L ⁇ N 1 N 2 ) with two identical diagonal blocks, i.e., ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , and B is an N1N2xL matrix with columns oversampled DFT matrix, as follows: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ 1 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , , 1, Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • W f is an N3xM matrix (M ⁇ N3) with columns selected from a critically sampled size-N 3 DFT matrix, as follows: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , 0 ⁇ ⁇ ⁇ ⁇ ⁇ 1, ⁇ [0053] Only the with the oversampling index taking on O 1 O 2 values. Similarly, for W F , only the indices of the M selected columns out of the predefined size-N 3 DFT matrix are reported.
  • the indices of the M dimensions are referred as the selected frequency domain (FD) basis indices.
  • L, M represent the equivalent spatial and frequency dimensions after compression, respectively.
  • the 2LxM matrix ⁇ ⁇ ⁇ ⁇ represents the linear combination coefficients (LCCs) of the spatial and frequency DFT- basis vectors.
  • LCCs linear combination coefficients
  • W f are selected independent for different layers. Magnitude and phase values of an approximately ⁇ fraction of the 2LM available coefficients are reported to the gNB ( ⁇ 1) as part of the CSI report. Coefficients with zero magnitude are indicated via a per-layer bitmap.
  • the KxN 3 codebook matrix per layer takes on the form: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ .
  • ⁇ ⁇ ⁇ ⁇ and W 3 follow the same structure as conventional NR Rel.16 Type-II Codebook, where both are layer specific.
  • the matrix ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ is a Kx2L block-diagonal matrix with the same structure as that in the NR Rel.15 Type-II port selection codebook.
  • the Rel.17 Type-II Port Selection codebook follows a similar structure as that of Rel.15 and Rel.16 port-selection codebooks, as follows: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , ⁇ ⁇ ⁇ , ⁇ .
  • the port-selection matrix ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ supports free selection of the K ports, or more precisely the K/2 ports per polarization out of the N 1 N 2 CSI-RS ports per polarization, i.e., ⁇ log ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ /2 ⁇ bits are used to identify the K/2 selected ports per polarization, where this all layers.
  • the codebook report is partitioned into two parts based on the priority of information reported. Each part is encoded separately (and part 1 has a possibly higher code rate).
  • the parameters for NR Rel.16 Type-II codebook include part 1: RI + channel quality indicator (CQI) + Total number of coefficients, and part 2: SD basis indicator + FD basis indicator/layer + Bitmap/layer + Coefficient Amplitude info/layer + Coefficient Phase info/layer + Strongest coefficient indicator/layer.
  • part 2 CSI can be decomposed into sub-parts each with different priority (higher priority information listed first).
  • Type-II codebook is based on aperiodic CSI reporting, and only reported in physical uplink shared channel (PUSCH) via downlink control information (DCI) triggering (one exception).
  • Type-I codebook can be based on periodic CSI reporting (physical uplink control channel (PUCCH)) or semi-persistent CSI reporting (PUSCH or PUCCH) or aperiodic reporting (PUSCH).
  • PUCCH physical uplink control channel
  • PUSCH physical uplink control channel
  • PUSCH or PUCCH semi-persistent CSI reporting
  • PUSCH aperiodic reporting
  • Priority 0 For CSI reports 1 to ⁇ ⁇ , Group 0 CSI for CSI reports configured as 'typeII-r16' or Priority 2 ⁇ ⁇ ⁇ 1: [0058] Note that the priority of the NRep CSI reports are based on the following: a CSI report corresponding to one CSI reporting configuration for one cell may have higher priority compared with another CSI report corresponding to one other CSI reporting configuration for the same cell; Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • CSI reports intended to one cell may have priority compared with other CSI reports intended to another cell; CSI reports may have higher priority based on the CSI report content (e.g., CSI reports carrying L1-reference signal received power (RSRP) information have higher priority); and CSI reports may have higher priority based on their type(e.g., whether the CSI report is aperiodic, semi-persistent or periodic, and whether the report is sent via PUSCH or PUCCH, may impact the priority of the CSI report).
  • RSRP L1-reference signal received power
  • CSI reports may be prioritized as follows, where CSI reports with lower IDs have higher priority: P ri ⁇ ⁇ , ⁇ , ⁇ , ⁇ ⁇ 2 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
  • s CSI reporting configuration index
  • Ms maximum number of CSI reporting configurations
  • c cell index
  • Ncells is the number of serving cells
  • k is zero (0) for CSI reports carrying L1-RSRP or L1- signal-to-interference-and-noise ratio (SINR), one (1) otherwise
  • y is zero (0) for aperiodic reports, one (1) for semi-persistent reports on PUSCH, two (2) for semi- persistent reports on PUCCH, and three (3) for periodic reports.
  • n RI , v and K s CSI-RS are the number of allowed rank indicator values, the value of the rank and the number of CSI-RS resources in the corresponding resource set, respectively.
  • the values of the rank indicator field are mapped to allowed rank indicator values with increasing order, where ‘0’ is mapped to the smallest allowed rank indicator value.
  • SMM920220117-WO-PCT 21 Bitwidth Field 1 antenna 2 antenna 4 antenna >4 antenna ports ⁇ ⁇ ⁇ ⁇ ⁇ CSI report CSI fields - 2- pp g p
  • SMM920220117-WO-PCT Lenovo Docket No.
  • SMM920220117-WO-PCT 22 CSI report n umber CSI fields r r d CSI report CSI fields d - - - band
  • CQI Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • SMM920220117-WO-PCT 23 Subband differential the second TB of all even subbands with increasing order of subband number, as in Tables 6.3.1.1.2-3/4/5, if cqi- of x g f x band CQI. Note that sub-bands for a given CSI report n indicated by the higher layer parameter csi- ReportingBand are numbered continuously in the increasing order with the lowest subband of csi- ReportingBand as subband 0.
  • SMM920220117-WO-PCT 24 CSI report n umber CSI fields , e A: t PortSelection-r16’ codebook [0061]
  • the CSI report content in UCI, whether on PUCCH or PUSCH, is provided in detail in 3GPP [TS 38.212].
  • the rank indicator (RI) if reported, has bitwidth of min ⁇ log ⁇ ⁇ ⁇ ⁇ , ⁇ log ⁇ ⁇ ⁇ ⁇ ⁇ , where Nports, nRI represent the number of antenna ports and the number of allowed rank indicator values, respectively.
  • the CSI-RS resource indicator (CRI) and the synchronization signal block resource indicator (SSBRI) each have bitwidths of ⁇ log ⁇ ⁇ ⁇ ⁇ ⁇ , ⁇ log ⁇ ⁇ ⁇ ⁇ ⁇ , respectively, where ⁇ ⁇ ⁇ is the number of CSI-RS resources in the corresponding resource set, and ⁇ ⁇ ⁇ is the configured number of synchronization signal (SS)/ physical broadcast channel (PBCH) blocks in the corresponding resource set for reporting ‘ssb-Index-RSRP’.
  • Table 8 The mapping order of CSI fields of one CSI report with wideband PMI and wideband CQI on PUCCH is shown below in Table 8: Attorney Docket No.
  • FIG.4 illustrates an example implementation 400 of ASN.1 code for triggering more than one CSI report within CSI-ReportConfig reporting setting IE, which supports unified CSI codebook in accordance with aspects of the present disclosure.
  • FIG.5 illustrates an example implementation 500 of ASN.1 code for triggering two CSI reports within CodebookConfig codebook configuration IE, which supports unified CSI codebook in accordance with aspects of the present disclosure.
  • aspects of the present disclosure include different implementations for the indication of a unified CSI codebook for multi-TRP and/or panel transmissions.
  • a UE configured with a unified CSI codebook for multi-TRP and/or panel transmission is also expected to be configured with a codebook configuration codebookConfig of a CSI reporting setting CSI-ReportConfig that includes a higher-layer parameter which triggers the UE to report multiple layer groups of CSI.
  • the higher-layer parameter indicates a maximum number of layer groups to be indicated by a UE, where a maximum number of layer groups of two implies an indication of at most two layer groups.
  • Each layer group of the at most two layer groups includes a mutually exclusive subset of layers from a set of layers inferred from a rank indicator reported by the UE.
  • nLayerGroups can be set Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 26 to either one of the following values ⁇ 1,2 ⁇ .
  • the higher-layer parameter indicates whether a UE is configured with reporting CSI corresponding to a maximum of two layer groups, where each layer group of the at most two layer groups includes a mutually exclusive subset of layers from a set of layers inferred from a rank indicator reported by the UE.
  • TwoLayerGroupsEnabled can be set to either one of the following values ⁇ True, False ⁇ , ⁇ enabled, disabled ⁇ or ⁇ 1,0 ⁇ , etc.
  • a UE configured with a unified CSI codebook for multi-TRP and/or panel transmission is also expected to report an indication to the network as part of a CSI report that is fed back over uplink control information (UCI) that indicates whether the reported CSI corresponds to one layer group or to two layer groups.
  • UCI uplink control information
  • the UE reports a one-bit indicator in part1 of a CSI report, wherein the indicator value ⁇ 0 ⁇ corresponds to a CSI report for CSI that is associated with a single layer group, and the indicator value ⁇ 1 ⁇ corresponds to a CSI report for CSI that is associated with two layer groups.
  • a UE configured with a unified CSI codebook for multi-TRP and/or panel transmission is also expected to be configured with a codebook type that is set to a Type-II codebook (e.g., TypeII), and a codebook sub-type that is set to a CJT codebook (e.g., TypeII-CJT- r18), as part of a Rel-18 codebook configuration (e.g., codebookConfig-r18).
  • a codebook type that is set to a Type-II codebook
  • a codebook sub-type that is set to a CJT codebook
  • codebookConfig-r18 e.g., codebookConfig-r18
  • a UE configured with a unified CSI codebook for multi-TRP and/or panel transmission is also expected to be configured with a CSI reporting setting CSI-ReportConfig and corresponding CSI-RS resource set(s) for channel measurement include two or more non-zero power (NZP) CSI-RS resources.
  • the two or more NZP CSI-RS resources are associated with different TCI states corresponding to a same demodulation reference signal (DMRS) for PDSCH.
  • DMRS demodulation reference signal
  • the CSI reporting setting CSI-ReportConfig corresponding to a single CSI-RS resource set for channel measurement includes two or more NZP CSI-RS resources, where different CSI-RS resources are associated with separate layer groups of the two or more layer groups.
  • a UE With reference to a fifth as related to a unified codebook set only if the number of TRPs are greater than two, a UE is configured with a unified CSI codebook for multi- TRPs and/or panel transmission only if a number of NZP CSI-RS resources associated with CSI-RS resource sets (e.g., one NZP CSI-RS resource set), corresponding to the CSI- reporting setting CSI- ReportConfig is set to a specific value from a set of values.
  • a number of NZP CSI-RS resources associated with CSI-RS resource sets e.g., one NZP CSI-RS resource set
  • the set of values is a single value of ⁇ 2 ⁇ , and in a second example, the set of values includes integer values that exceed a value of 2 (e.g., ⁇ 3,4 ⁇ ).
  • a UE is configured with a unified CSI codebook for multi-TRPs and/or panel transmission only if a rank indicator reported by the UE as part of the CSI report exceeds a specific threshold value.
  • the specific threshold value is ⁇ 2 ⁇ .
  • each of the multiple TRPs associated with joint transmission to one UE is associated with a distinct or exclusive CSI-RS unit for channel measurement (e.g., K CSI-RS units corresponding to K TRPs).
  • each CSI-RS unit corresponds to a distinct group of CSI-RS ports within a same NZP CSI-RS resource.
  • a NZP CSI-RS resource having N CSI-RS ports is decomposed into K groups of N/K exclusive CSI-RS ports, where each CSI-RS port group is associated with a distinct TRP.
  • the CSI-RS port grouping is based on one or more of a pre-defined rule, and higher-layer signaling(e.g., based on MAC CE or RRC signaling).
  • each CSI-RS port group corresponds to a different and/or distinct CDM group.
  • the number of CSI-RS port groups is no larger than the number of CDM groups corresponding to the NZP CSI-RS resource.
  • each CSI-RS unit corresponds to a distinct NZP CSI-RS resource of a NZP CSI-RS resource set (i.e., a total of K NZP CSI-RS resources within a same NZP CSI-RS resource set are associated with the TCI state(s) corresponding to PDSCH transmission).
  • a NZP CSI-RS resource ID codepoint may correspond to more than one NZP CSI-RS resource.
  • SMM920220117-WO-PCT 28 associated with a distinct PMI layer group of two layer groups, and each layer group of the at most two layer groups includes a mutually exclusive subset of layers from a set of layers inferred from a rank indicator reported by the UE.
  • a unified CSI codebook for multi-TRP and/or panel transmission is associated with two codebook modes.
  • a first codebook mode of the two codebook modes is associated with a single layer group, where a K-number of TRPs corresponding to the K NZP CSI-RS resources are associated with a same set of PMI layers, and a second codebook mode of the two codebook modes is associated with two layer groups.
  • a first subset K’ TRPs of the set of K TRPs, where K’ ⁇ K, corresponding to K’ NZP CSI-RS resources, is associated with a first layer group of the two layer groups, and a second subset K” TRPs of the set of K TRPs, where K” ⁇ K, corresponding to K” NZP CSI-RS resources, is associated with a second layer group of the two layer groups, such that K K’+K”.
  • each of K’ and K” cannot exceed a specific threshold value (e.g., 2 , i.e., K’ ⁇ 2 and K” ⁇ 2).
  • a CSI report that is associated with K selected and/or indicated CSI-RS units includes K PMI quantities in the CSI report.
  • the mapping between the K TPRs and the two TRP groups is configured by the network as part of the CSI reporting setting CSI-ReportConfig.
  • the mapping between the K TPRs and the two TRP groups is reported by the UE as part of the CSI report.
  • the number of layers per layer group is upper bounded by a certain value.
  • a number of layers per layer group cannot exceed a threshold value.
  • the threshold value is two (i.e., a maximum of two layers per layer group for the second codebook mode).
  • the threshold value is a half of the maximum RI that can be reported by a UE, rounded to a nearest integer (e.g., round ⁇ ⁇ ⁇ ⁇ , ⁇ ⁇ , or ⁇ ⁇ .
  • each layer group is a distinct PMI (i.e., two PMI values are reported corresponding to information of the two layer groups).
  • the unified CSI codebook for multi-TRP and/or panel transmission is associated with and can support two structures. For a Structure1, a per-TRP or TRP-group SD or FD basis selection, which allows independent FD basis selection across K TRPs or TRP groups.
  • K number of TRPs or TRP groups
  • a unified CSI codebook for multi-TRP and/or panel transmission is supported only if codebook Structure2 is supported, selected, and/or configured.
  • bitmap reporting for CSI codebook Mode2 as discussed in the previous section, a unified CSI codebook for multi-TRP and/or panel transmission is associated with two codebook modes. If the second codebook mode with two layer groups is configured, a reporting, indication, and/or configuration of a mapping between a layer of a set of RI layers included in the PMI of the CSI report and a layer group of the two layer groups is needed.
  • SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 30 implementations are provided below, and to a possible implementation, one or more elements or features from one or more of the described implementations may be combined.
  • a first implementation for a UE reports an indication of layer group and/or TRP mapping
  • an indication of the mapping between the layers of the set of RI layers included in the PMI of the CSI report is reported by the UE to the network as part of the CSI report.
  • the indication is reported in a second part of at least two parts of a CSI report.
  • an indication of the mapping between the layers of the set of RI layers included in the PMI of the CSI report is configured by the network and reported to the UE.
  • the indication is reported as part of the CSI reporting setting CSI-ReportConfig.
  • the mapping is based on a rule that depends on different possible RI values reported by a UE, such as indicated by the example mapping shown in Table 9.
  • the indication of the mapping between the layers of the set of RI layers included in the PMI of the CSI report is in a form of a layer-group bitmap.
  • the layer-group bitmap is of size RIxK (e.g., RIxK layer-group bitmap matrix), where RI is a reported rank indicator by the UE, and K is a number of TRPs corresponding to K CSI-RS resources.
  • a bit value of one in an (r,k) field of the RIxK layer-group bitmap matrix indicates that a layer r is associated with a transmission from the k th TRP, and a bit value of zero in an (r’,k) field of the RIxK layer-group bitmap matrix indicates a layer r’ is not associated with a transmission from the k th TRP.
  • a bitmap corresponding to the linear combination coefficients of a PMI codebook (e.g., of size 2LM) associated with a TRP k and rank r’ is not reported if the (r’,k) field of the RIxK layer-group bitmap matrix indicates that a layer r’ is not associated with a transmission from the k th TRP.
  • K layer-group bitmaps of length RI each are indicated, where a bit value of one in an r th field of the k th layer-group bitmap indicates that a layer r is associated with a Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • RI layer-group bitmaps of length K each are indicated, where a bit value of one in a k th field of the r th layer-group bitmap indicates that a layer r is associated with a transmission from the k th TRP, and a bit value of zero in a k th field of the r’ th layer-group bitmap indicates that a layer r’ is not associated with a transmission from the k th TRP.
  • a bitmap corresponding to the linear combination coefficients of a PMI codebook (e.g., of size 2LM) associated with a TRP k and rank r’ is not reported if a bit value of zero in a k th field of the r’ th layer-group bitmap is reported.
  • the indication of the mapping between the layers of the set of RI layers included in the PMI of the CSI report is in a form of an encoded value from a codebook of a set of encoded values.
  • Each encoded value from the codebook of the set of encoded values corresponds to a distinct mapping between the layers of the set of RI layers combination of PMI segments and the PMI layer groups.
  • Other aspects are described as related to an indication of a strongest TRP per PMI layer group. Since TRPs associated with different layer groups are expected to transmit signals corresponding to distinct layers, an indication of a strongest TRP per layer group may be needed.
  • a strongest TRP per layer group has a better L,M, ⁇ , and/or quantization resolution.
  • a stronger TRP per layer- group is associated with a distinct SD, FD, and/or coefficient transformation or quantization of PMI compared with a weaker TRP per the layer group.
  • the stronger TRP is associated with a larger (or equal) number of FD basis indices M compared with a number of FD basis indices M’ of the weaker TRP (i.e., M’ ⁇ M).
  • the stronger TRP is associated with a larger (or equal) number of SD basis indices L compared with a number of SD basis indices L’ of the weaker TRP (i.e., L’ ⁇ L).
  • the stronger associated with a larger (or equal) fraction of non-zero coefficients ⁇ compared with a fraction of non-zero coefficients ⁇ ’ of the weaker TRP i.e., ⁇ ’ ⁇ ⁇ .
  • the stronger TRP is associated with a higher quantization resolution of amplitude coefficients, phase coefficients, or both, compared with a quantization resolution of amplitude coefficients, phase coefficients, or both, of the weaker TRP.
  • a stronger TRP of a layer group is associated with a larger (or equal) reference amplitude coefficient associated with a PMI segment corresponding to the stronger TRP, compared with a reference amplitude coefficient associated with a PMI segment corresponding to the weaker TRP.
  • the TRPs associated with the stronger layer group are associated with a distinct SD, FD, and/or coefficient transformation or quantization of PMI compared with TRPs associated with a weaker layer group.
  • a TRP associated with the stronger layer group is also associated with a larger (or equal) number of FD basis indices M compared with a number of FD basis indices M’ of a TRP associated with the weaker layer group, i.e., M’ ⁇ M).
  • a TRP associated with the stronger layer group is also associated with a larger (or equal) number of SD basis indices L compared with a number of SD basis indices L’ of a TRP associated with the weaker layer group, i.e., L’ ⁇ L).
  • a TRP associated with the stronger layer group is also associated with a larger (or equal) fraction of non-zero coefficients ⁇ compared with a fraction of non-zero coefficients ⁇ ’ of a TRP associated with the weaker layer group, i.e., ⁇ ’ ⁇ ⁇ ).
  • a TRP associated with the stronger layer group is also associated with a higher quantization resolution of amplitude coefficients, phase coefficients, or both, compared with a quantization resolution of amplitude coefficients, phase coefficients, or both, of a TRP associated with the weaker layer group.
  • a stronger layer group is associated with a larger (or equal) maximum reference amplitude coefficient corresponding to all TRPs of the stronger layer group, compared with a maximum reference amplitude coefficient corresponding to all TRPs of the weaker layer group.
  • a stronger TRP per layer group has a TRP reference amplitude coefficient value set to a maximum value (e.g., one (1), by default).
  • a network may only trigger, activate, and/or schedule a subset of TRPs associated with each layer group, or alternatively a subset of TRPs associated with only one layer group, for PDSCH transmission.
  • a corresponding CQI value may differ, compared with a scenario in which all TRPs associated with the two layer groups are triggered, activated, and/or scheduled for PDSCH transmission.
  • a UE reports two CQIs in a CSI report.
  • a first CQI value is associated with a transmission hypothesis in which all configured and/or reported TRPs in a CSI report are accounted for, and a second CQI value is associated with a transmission hypothesis in which a stronger TRP corresponding to each layer group is accounted for.
  • a UE reports two CQIs in a CSI report.
  • a first CQI value is associated with a transmission hypothesis in which all configured and/or reported TRPs of all layer groups in a CSI report are accounted for, and a second CQI value is associated with a transmission hypothesis in which only TRPs corresponding to a stronger layer group are accounted for.
  • Other aspects are described as related to antenna panels or ports, quasi-collocation, TCI state, and spatial relation. Note that in some implementations, the terms antenna, panel, and antenna panel are used interchangeably.
  • An antenna panel may be a hardware device or component that is used for transmitting and/or receiving radio signals at frequencies lower than 6GHz (e.g., FR1) or higher than 6GHz (e.g., FR2) or mmWave.
  • an antenna panel may comprise an array of antenna elements, where each antenna element is connected to hardware such as a phase shifter that allows a control module to apply spatial parameters for transmission and/or reception of signals.
  • the resulting radiation pattern may be called a beam, which may or may not be unimodal and allows the device to amplify signals that are transmitted or received from spatial directions.
  • an antenna panel may or may not be virtualized as an antenna port in the specifications.
  • An antenna panel may be connected to a baseband processing module Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 34 through a radio frequency (RF) chain for each (egress) and reception (ingress) directions.
  • RF radio frequency
  • a capability of a device in terms of the number of antenna panels, their duplexing capabilities, beamforming capabilities, and so on, may or may not be transparent to other devices.
  • capability information may be communicated via signaling or, in some implementations, capability information may be provided to devices without a need for signaling. In the case that such information is available to other devices, it can be used for signaling or local decision making.
  • a device e.g., a UE or network node
  • antenna panel may be a physical or logical antenna array having a set of antenna elements or antenna ports that share a common or a significant portion of an RF chain (e.g., in-phase/quadrature (I/Q) modulator, analog to digital (A/D) converter, local oscillator, phase shift network).
  • the device antenna panel or “device panel” may be a logical entity with physical device antennas mapped to the logical entity. The mapping of physical device antennas to the logical entity may be up to device implementation.
  • Communicating (receiving or transmitting) on at least a subset of antenna elements or antenna ports active for radiating energy (also referred to herein as active elements) of an antenna panel requires biasing or powering on of the RF chain which results in current drain or power consumption in the device associated with the antenna panel (including power amplifier and/or low noise amplifier (LNA) power consumption associated with the antenna elements or antenna ports).
  • active for radiating energy is not meant to be limited to a transmit function, but also encompasses a receive function.
  • an antenna element that is active for radiating energy may be coupled to a transmitter to transmit radio frequency energy or to a receiver to receive radio frequency energy, either simultaneously or sequentially, or may be coupled to a transceiver in general, for performing its intended functionality. Communicating on the active elements of an antenna panel enables generation of radiation patterns or beams.
  • a “device panel” can have at least one of the following functionalities as an operational role of unit of antenna group to control its Tx beam independently, unit of antenna group to control its transmission power independently, or unit of antenna group to control its transmission timing independently.
  • the “device panel” may be transparent to gNB.
  • a gNB or network can assume the mapping between a device physical antennas to the logical entity “device Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 35 panel” may not be changed. For example, the may include until the next update or report from the device, or include a duration of time over which the gNB assumes there will be no change to the mapping.
  • a device may report its capability with respect to the “device panel” to the gNB or network. The device capability may include at least the number of “device panels”.
  • the device may support UL transmission from one beam within a panel, and/or with multiple panels, more than one beam (one beam per panel) may be used for UL transmission. In another implementation, more than one beam per panel may be supported or used for UL transmission.
  • an antenna port is defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed.
  • Two antenna ports are said to be quasi co-located (QCL) if the large-scale properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed.
  • the large-scale properties include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters.
  • Two antenna ports may be quasi- located with respect to a subset of the large-scale properties and a different subset of large-scale properties may be indicated by a QCL Type.
  • the QCL Type can indicate which channel properties are the same between the two reference signals (e.g., on the two antenna ports). Thus, the reference signals can be linked to each other with respect to what the UE can assume about their channel statistics or QCL properties.
  • qcl-Type may take one of the following values: 'QCL- TypeA': ⁇ Doppler shift, Doppler spread, average delay, delay spread ⁇ ; 'QCL-TypeB': ⁇ Doppler shift, Doppler spread ⁇ ; 'QCL-TypeC': ⁇ Doppler shift, average delay ⁇ ; 'QCL-TypeD': ⁇ Spatial Rx parameter ⁇ .
  • Spatial Rx parameters may include one or more of angle of arrival (AoA,) dominant AoA, average AoA, angular spread, power angular spectrum (PAS) of AoA, average AoD (angle of departure), PAS of AoD, transmit and/or receive channel correlation, transmit and/or receive beamforming, spatial channel correlation, etc.
  • the QCL-TypeA, QCL-TypeB and QCL-TypeC may be applicable for all carrier frequencies, but the QCL-TypeD may be applicable only in higher carrier frequencies (e.g., mmWave, FR2 and beyond), where essentially the UE may not be able to perform omni-directional transmission (i.e., the UE would need to form beams for directional Attorney Docket No.
  • An “antenna port” may be a logical port that corresponds to a beam (resulting from beamforming), or may correspond to a physical antenna on a device. In some implementations, a physical antenna may map directly to a single antenna port, in which an antenna port corresponds to an actual physical antenna.
  • a set or subset of physical antennas may be mapped to one or more antenna ports after applying complex weights, a cyclic delay, or both to the signal on each physical antenna.
  • the physical antenna set may have antennas from a single module or panel, or from multiple modules or panels.
  • the weights may be fixed as in an antenna virtualization scheme, such as cyclic delay diversity (CDD).
  • CDD cyclic delay diversity
  • the procedure used to derive antenna ports from physical antennas may be specific to a device implementation and transparent to other devices.
  • a TCI-state associated with a target transmission can indicate parameters for configuring a quasi-collocation relationship between the target transmission (e.g., target RS of DM-RS ports of the target transmission during a transmission occasion) and a source reference signal(s) (e.g., SSB/CSI-RS/ sounding reference signal (SRS)) with respect to quasi co-location type parameter(s) indicated in the corresponding TCI state.
  • the TCI describes which reference signals are used as QCL source, and what QCL properties can be derived from each reference signal.
  • a device can receive a configuration of a plurality of transmission configuration indicator states for a serving cell for transmissions on the serving cell.
  • a TCI state comprises at least one source RS to provide a reference (UE assumption) for determining QCL and/or spatial filter.
  • a spatial relation information associated with a target transmission can indicate parameters for configuring a spatial setting between the target transmission and a reference RS (e.g., SSB/CSI-RS/SRS).
  • the device may transmit the target transmission with the same spatial domain filter used for reception of the reference RS (e.g., DL RS such as SSB/CSI-RS).
  • the device may transmit the target transmission with the same spatial domain transmission filter used for the transmission of the reference RS (e.g., Attorney Docket No.
  • a device can receive a of a plurality of spatial relation information configurations for a serving cell for transmissions on the serving cell.
  • a UL TCI state is provided if a device is configured with separate DL/UL TCI by RRC signaling.
  • the UL TCI state may include a source reference signal which provides a reference for determining an UL spatial domain transmission filter for the UL transmission (e.g., dynamic-grant or configured-grant based PUSCH, dedicated PUCCH resources) in a component carrier (CC) or across a set of configured CCs or BWPs.
  • a joint DL/UL TCI state is provided if the device is configured with joint DL/UL TCI by RRC signaling (e.g., configuration of joint TCI or separate DL/UL TCI is based on RRC signaling).
  • the joint DL/UL TCI state refers to at least a common source reference RS used for determining both the DL QCL information and the UL spatial transmission filter.
  • the source RS determined from the indicated joint (or common) TCI state provides QCL Type-D indication (e.g., for device-dedicated physical downlink control channel (PDCCH) and/or PDSCH) and is used to determine an UL spatial transmission filter (e.g., for UE-dedicated PUSCH and/or PUCCH) for a CC or across a set of configured CCs and/or BWPs.
  • the UL spatial transmission filter is derived from the RS of DL QCL Type D in the joint TCI state.
  • the spatial setting of the UL transmission may be according to the spatial relation with a reference to the source RS configured with qcl-Type set to ‘typeD’ in the joint TCI state.
  • FIG.6 illustrates an example of a block diagram 600 of a device 602 that supports unified CSI codebook in accordance with aspects of the present disclosure.
  • the device 602 may be an example of a UE 104 as described herein.
  • the device 602 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof.
  • the device 602 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 604, a memory 606, a transceiver 608, and an I/O controller 610. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses).
  • the processor 604, the memory 606, the transceiver 608, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein.
  • the processor 604, the memory 606, the Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 38 transceiver 608, or various combinations or thereof may support a method for performing one or more of the operations described herein.
  • the processor 604, the memory 606, the transceiver 608, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry).
  • the hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • the processor 604 and the memory 606 coupled with the processor 604 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 604, instructions stored in the memory 606).
  • the processor 604 may support wireless communication at the device 602 in accordance with examples as disclosed herein.
  • the processor 604 may be configured as or otherwise support a means for receiving a first signaling from a base station as a CSI reporting setting, the CSI reporting setting indicating a CMR for at least two CSI-RS segments corresponding to multiple PMI layers associated with one or more PMI layer groups; and transmitting a second signaling to the base station as a CSI report in one of two CSI report modes, the CSI report including an indication of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, the CSI report mode based at least in part on the number of the one or more PMI layer groups.
  • the processor 604 may be configured as or otherwise support any one or combination of the CSI reporting setting indicates a total number of the one or more PMI layer groups.
  • the CSI report indicates a total number of the one or more PMI layer groups.
  • the one or more PMI layer groups includes a distinct subset of the multiple PMI layers.
  • a first CSI-RS segment of the at least two CSI-RS segments corresponds to a first NZP CSI-RS resource
  • a second CSI-RS segment of the at least two CSI-RS segments corresponds to a second NZP CSI-RS resource.
  • a first CSI-RS segment of the at least two CSI-RS segments corresponds to a first subset of a set of CSI-RS ports of a NZP CSI-RS resource
  • a second CSI-RS segment of the at least two CSI-RS segments corresponds to a second subset of the set of CSI-RS ports of the NZP CSI-RS Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 39 resource.
  • the first subset and the second the set of CSI-RS ports corresponds to two CDM groups.
  • the at least two CSI-RS segments are associated with at least two TCI states corresponding to QCL associations with a DMRS for PDSCH.
  • a first CSI report mode of the two CSI report modes is associated with the CSI report comprising one PMI layer group, the one PMI layer group associated with the multiple PMI layers.
  • a second CSI report mode of the two CSI report modes is associated with two PMI layer groups, each of the two PMI layer groups associated with an exclusive subset of the multiple PMI layers.
  • the method further comprising selecting one PMI layer group of the two PMI layer groups.
  • a PMI corresponding to the selected PMI layer group is associated with a different configuration than a configuration of a non-selected PMI layer group corresponding to at least one of a spatial domain basis transformation, a frequency domain basis transformation, a fraction corresponding to a total number of non-zero coefficients, or a quantization resolution.
  • Each of the at least two CSI-RS segments is associated with a distinct one of the two PMI layer groups.
  • An association of each of the at least two CSI-RS segments with the distinct one of the two PMI layer groups is indicated by a layer-group bitmap.
  • the layer-group bitmap indicates whether one of the at least two CSI-RS segments is associated with one PMI layer of the multiple PMI layers.
  • a coefficients bitmap of one PMI layer corresponding to a CSI-RS segment is not reported if the one PMI layer is not associated with the CSI-RS segment.
  • Two CQI values are reported in the CSI report, a first CQI value of the two CQI values is associated with all CSI-RS segments.
  • a second CQI value of the two CQI values is associated with a subset of the CSI-RS segments, the subset of the CSI-RS segments corresponding to a selected CSI-RS segment from each of the two PMI layer groups.
  • a second CQI value of the two CQI values is associated with a subset of the CSI-RS segments, the subset of the CSI-RS segments corresponding to a selected layer group of the two PMI layer groups.
  • a selected CSI-RS segment of a subset of CSI RS segments is associated with one of the two PMI layer groups.
  • a PMI corresponding to the selected CSI-RS segment is associated with a different configuration than a configuration of a non-selected CSI-RS segment of a same PMI layer group corresponding to at least one of a spatial domain basis transformation, a frequency domain basis transformation, a fraction of non-zero coefficients, or a quantization resolution.
  • the selected CSI-RS segment is associated with a maximum reference amplitude value.
  • the 602 may include a processor and a memory coupled with the processor, the processor configured to: receive a first signaling from a base station as a CSI reporting setting, the CSI reporting setting indicating a CMR for at least two CSI-RS segments corresponding to multiple PMI layers associated with one or more PMI layer groups; and transmit a second signaling to the base station as a CSI report in one of two CSI report modes, the CSI report including an indication of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, the CSI report mode based at least in part on the number of the one or more PMI layer groups.
  • the wireless communication at the device 602 may include any one or combination of the CSI reporting setting indicates a total number of the one or more PMI layer groups.
  • the CSI report indicates a total number of the one or more PMI layer groups.
  • Each of the one or more PMI layer groups includes a distinct subset of the multiple PMI layers.
  • a first CSI-RS segment of the at least two CSI-RS segments corresponds to a first NZP CSI-RS resource
  • a second CSI-RS segment of the at least two CSI-RS segments corresponds to a second NZP CSI-RS resource.
  • a first CSI-RS segment of the at least two CSI-RS segments corresponds to a first subset of a set of CSI-RS ports of a NZP CSI-RS resource
  • a second CSI-RS segment of the at least two CSI-RS segments corresponds to a second subset of the set of CSI-RS ports of the NZP CSI-RS resource.
  • the first subset and the second subset of the set of CSI-RS ports corresponds to two CDM groups.
  • the at least two CSI-RS segments are associated with at least two TCI states corresponding to QCL associations with a DMRS for PDSCH.
  • a first CSI report mode of the two CSI report modes is associated with the CSI report comprising one PMI layer group, the one PMI layer group associated with the multiple PMI layers.
  • a second CSI report mode of the two CSI report modes is associated with two PMI layer groups, each of the two PMI layer groups associated with an exclusive subset of the multiple PMI layers.
  • the processor is configured to select one PMI layer group of the two PMI layer groups.
  • a PMI corresponding to the selected PMI layer group is associated with a different configuration than a configuration of a non-selected PMI layer group corresponding to at least one of a spatial domain basis transformation, a frequency domain basis transformation, a fraction corresponding to a total number of non-zero coefficients, or a quantization resolution.
  • Each of the at least two CSI-RS segments is associated with a distinct one of the two PMI layer groups.
  • An association of each of the at least two CSI-RS segments with the Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 41 distinct one of the two PMI layer groups is by a layer-group bitmap.
  • the layer-group bitmap indicates whether one of the at least two CSI-RS segments is associated with one PMI layer of the multiple PMI layers.
  • a coefficients bitmap of one PMI layer corresponding to a CSI-RS segment is not reported if the one PMI layer is not associated with the CSI-RS segment.
  • a first CQI value of the two CQI values is associated with all CSI-RS segments.
  • a second CQI value of the two CQI values is associated with a subset of the CSI-RS segments, the subset of the CSI-RS segments corresponding to a selected CSI-RS segment from each of the two PMI layer groups.
  • a second CQI value of the two CQI values is associated with a subset of the CSI-RS segments, the subset of the CSI-RS segments corresponding to a selected layer group of the two PMI layer groups.
  • a selected CSI-RS segment of a subset of CSI RS segments is associated with one of the two PMI layer groups.
  • a PMI corresponding to the selected CSI-RS segment is associated with a different configuration than a configuration of a non-selected CSI-RS segment of a same PMI layer group corresponding to at least one of a spatial domain basis transformation, a frequency domain basis transformation, a fraction of non-zero coefficients, or a quantization resolution.
  • the selected CSI-RS segment is associated with a maximum reference amplitude value.
  • the processor 604 includes at least one controller coupled with at least one memory, and is configured to or operable to cause the processor to receive a first signaling as a CSI reporting setting, the CSI reporting setting indicating a CMR for at least two CSI-RS segments corresponding to multiple PMI layers associated with one or more PMI layer groups; and transmit a second signaling as a CSI report in one of two CSI report modes, the CSI report including an indication of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, the CSI report mode based at least in part on the number of the one or more PMI layer groups.
  • the processor 604 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof).
  • the processor 604 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 42 into the processor 604.
  • the processor 604 may configured to execute computer-readable instructions stored in a memory (e.g., the memory 606) to cause the device 602 to perform various functions of the present disclosure.
  • the memory 606 may include random access memory (RAM) and read-only memory (ROM).
  • the memory 606 may store computer-readable, computer-executable code including instructions that, when executed by the processor 604 cause the device 602 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some implementations, the code may not be directly executable by the processor 604 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 606 may include, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • the I/O controller 610 may manage input and output signals for the device 602.
  • the I/O controller 610 may also manage peripherals not integrated into the device M02.
  • the I/O controller 610 may represent a physical connection or port to an external peripheral.
  • the I/O controller 610 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system.
  • the I/O controller 610 may be implemented as part of a processor, such as the processor 604. In some implementations, a user may interact with the device 602 via the I/O controller 610 or via hardware components controlled by the I/O controller 610.
  • the device 602 may include a single antenna 612. However, in some other implementations, the device 602 may have more than one antenna 612 (i.e., multiple antennas), including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 608 may communicate bi-directionally, via the one or more antennas 612, wired, or wireless links as described herein.
  • the transceiver 608 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 608 may also include a modem to modulate the packets, to provide the modulated packets to one or more Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 43 antennas 612 for transmission, and to packets received from the one or more antennas 612.
  • FIG.7 illustrates an example of a block diagram 700 of a device 702 that supports unified CSI codebook in accordance with aspects of the present disclosure.
  • the device 702 may be an example of a network entity 102, such as a base station as described herein.
  • the device 702 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof.
  • the device 702 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 704, a memory 706, a transceiver 708, and an I/O controller 710. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses).
  • the processor 704, the memory 706, the transceiver 708, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein.
  • the processor 704, the memory 706, the transceiver 708, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
  • the processor 704, the memory 706, the transceiver 708, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry).
  • the hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • the processor 704 and the memory 706 coupled with the processor 704 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 704, instructions stored in the memory 706).
  • the processor 704 may support wireless communication at the device 702 in accordance with examples as disclosed herein.
  • the processor 704 may be configured as or otherwise support a means for transmitting a first signaling to a UE as a CSI reporting setting, the Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No.
  • SMM920220117-WO-PCT 44 CSI reporting setting indicates a CMR for at two CSI-RS segments corresponding to multiple PMI layers associated with one or more PMI layer groups; and receiving a second signaling from the UE as a CSI report in one of two CSI report modes, the CSI report including an indication of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, the CSI report mode based at least in part on the number of the one or more PMI layer groups.
  • the processor 704 may be configured as or otherwise support any one or combination of the CSI reporting setting indicates a total number of the one or more PMI layer groups.
  • the CSI report indicates a total number of the one or more PMI layer groups.
  • Each of the one or more PMI layer groups includes a distinct subset of the multiple PMI layers.
  • a first CSI-RS segment of the at least two CSI-RS segments corresponds to a first NZP CSI-RS resource
  • a second CSI-RS segment of the at least two CSI-RS segments corresponds to a second NZP CSI-RS resource.
  • a first CSI-RS segment of the at least two CSI-RS segments corresponds to a first subset of a set of CSI-RS ports of a NZP CSI-RS resource
  • a second CSI-RS segment of the at least two CSI-RS segments corresponds to a second subset of the set of CSI-RS ports of the NZP CSI-RS resource.
  • the first subset and the second subset of the set of CSI-RS ports corresponds to two CDM groups.
  • the at least two CSI-RS segments are associated with at least two TCI states corresponding to QCL associations with a DMRS for PDSCH.
  • a first CSI report mode of the two CSI report modes is associated with the CSI report comprising one PMI layer group, the one PMI layer group associated with the multiple PMI layers.
  • a second CSI report mode of the two CSI report modes is associated with two PMI layer groups, each of the two PMI layer groups associated with an exclusive subset of the multiple PMI layers. The method further comprising selecting one PMI layer group of the two PMI layer groups.
  • a PMI corresponding to the selected PMI layer group is associated with a different configuration than a configuration of a non-selected PMI layer group corresponding to at least one of a spatial domain basis transformation, a frequency domain basis transformation, a fraction corresponding to a total number of non-zero coefficients, or a quantization resolution.
  • Each of the at least two CSI-RS segments is associated with a distinct one of the two PMI layer groups.
  • An association of each of the at least two CSI-RS segments with the distinct one of the two PMI layer groups is indicated by a layer-group bitmap.
  • the layer-group bitmap indicates whether one of the at least two CSI-RS segments is associated with one PMI layer of the multiple PMI layers.
  • a coefficients bitmap of one PMI layer corresponding to a CSI-RS Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 45 segment is not reported if the one PMI layer is associated with the CSI-RS segment.
  • Two CQI values are reported in the CSI report, a first CQI value of the two CQI values is associated with all CSI-RS segments.
  • a second CQI value of the two CQI values is associated with a subset of the CSI-RS segments, the subset of the CSI-RS segments corresponding to a selected CSI-RS segment from each of the two PMI layer groups.
  • a second CQI value of the two CQI values is associated with a subset of the CSI-RS segments, the subset of the CSI-RS segments corresponding to a selected layer group of the two PMI layer groups.
  • a selected CSI-RS segment of a subset of CSI RS segments is associated with one of the two PMI layer groups.
  • a PMI corresponding to the selected CSI-RS segment is associated with a different configuration than a configuration of a non-selected CSI-RS segment of a same PMI layer group corresponding to at least one of a spatial domain basis transformation, a frequency domain basis transformation, a fraction of non-zero coefficients, or a quantization resolution.
  • the selected CSI-RS segment is associated with a maximum reference amplitude value.
  • the device 702 may include a processor and a memory coupled with the processor, the processor configured to: transmit a first signaling to a UE as a CSI reporting setting, the CSI reporting setting indicating a CMR for at least two CSI-RS segments corresponding to multiple PMI layers associated with one or more PMI layer groups; and receive a second signaling from the UE as a CSI report in one of two CSI report modes, the CSI report including an indication of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, the CSI report mode based at least in part on the number of the one or more PMI layer groups.
  • the wireless communication at the device 702 may include any one or combination of the CSI reporting setting indicates a total number of the one or more PMI layer groups.
  • the CSI report indicates a total number of the one or more PMI layer groups.
  • Each of the one or more PMI layer groups includes a distinct subset of the multiple PMI layers.
  • a first CSI-RS segment of the at least two CSI-RS segments corresponds to a first NZP CSI-RS resource
  • a second CSI-RS segment of the at least two CSI-RS segments corresponds to a second NZP CSI-RS resource.
  • a first CSI-RS segment of the at least two CSI-RS segments corresponds to a first subset of a set of CSI-RS ports of a NZP CSI-RS resource
  • a second CSI-RS segment of the at least two CSI-RS segments corresponds to a second subset of the set of CSI-RS ports of the NZP CSI-RS Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 46 resource.
  • the first subset and the second the set of CSI-RS ports corresponds to two CDM groups.
  • the at least two CSI-RS segments are associated with at least two TCI states corresponding to QCL associations with a DMRS for PDSCH.
  • a first CSI report mode of the two CSI report modes is associated with the CSI report comprising one PMI layer group, the one PMI layer group associated with the multiple PMI layers.
  • a second CSI report mode of the two CSI report modes is associated with two PMI layer groups, each of the two PMI layer groups associated with an exclusive subset of the multiple PMI layers.
  • the processor is configured to select one PMI layer group of the two PMI layer groups.
  • a PMI corresponding to the selected PMI layer group is associated with a different configuration than a configuration of a non-selected PMI layer group corresponding to at least one of a spatial domain basis transformation, a frequency domain basis transformation, a fraction corresponding to a total number of non-zero coefficients, or a quantization resolution.
  • Each of the at least two CSI-RS segments is associated with a distinct one of the two PMI layer groups.
  • An association of each of the at least two CSI-RS segments with the distinct one of the two PMI layer groups is indicated by a layer-group bitmap.
  • the layer-group bitmap indicates whether one of the at least two CSI-RS segments is associated with one PMI layer of the multiple PMI layers.
  • a coefficients bitmap of one PMI layer corresponding to a CSI-RS segment is not reported if the one PMI layer is not associated with the CSI-RS segment.
  • Two CQI values are reported in the CSI report, a first CQI value of the two CQI values is associated with all CSI-RS segments.
  • a second CQI value of the two CQI values is associated with a subset of the CSI-RS segments, the subset of the CSI-RS segments corresponding to a selected CSI-RS segment from each of the two PMI layer groups.
  • a second CQI value of the two CQI values is associated with a subset of the CSI-RS segments, the subset of the CSI-RS segments corresponding to a selected layer group of the two PMI layer groups.
  • a selected CSI-RS segment of a subset of CSI RS segments is associated with one of the two PMI layer groups.
  • a PMI corresponding to the selected CSI-RS segment is associated with a different configuration than a configuration of a non-selected CSI-RS segment of a same PMI layer group corresponding to at least one of a spatial domain basis transformation, a frequency domain basis transformation, a fraction of non-zero coefficients, or a quantization resolution.
  • the selected CSI-RS segment is associated with a maximum reference amplitude value.
  • the processor 704 may include an hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof).
  • the processor 704 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 704.
  • the processor 704 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 706) to cause the device 702 to perform various functions of the present disclosure.
  • the memory 706 may include random access memory (RAM) and read-only memory (ROM).
  • the memory 706 may store computer-readable, computer-executable code including instructions that, when executed by the processor 704 cause the device 702 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the code may not be directly executable by the processor 704 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 706 may include, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • the I/O controller 710 may manage input and output signals for the device 702.
  • the I/O controller 710 may also manage peripherals not integrated into the device M02.
  • the I/O controller 710 may represent a physical connection or port to an external peripheral.
  • the I/O controller 710 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system.
  • the I/O controller 710 may be implemented as part of a processor, such as the processor 704.
  • a user may interact with the device 702 via the I/O controller 710 or via hardware components controlled by the I/O controller 710.
  • the device 702 may include a single antenna 712. However, in some other implementations, the device 702 may have more than one antenna 712 (i.e., multiple antennas), including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 708 may Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 48 communicate bi-directionally, via the one or antennas 712, wired, or wireless links as described herein.
  • the transceiver 708 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • FIG.8 illustrates a flowchart of a method 800 that supports unified CSI codebook in accordance with aspects of the present disclosure.
  • the operations of the method 800 may be implemented by a device or its components as described herein.
  • the operations of the method 800 may be performed by a UE 104 as described with reference to FIGs.1 through 7.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions.
  • the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include receiving a first signaling from a base station as a CSI reporting setting, the CSI reporting setting indicating a CMR for at least two CSI-RS segments corresponding to multiple PMI layers associated with one or more PMI layer groups.
  • the operations of 802 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 802 may be performed by a device as described with reference to FIG.1.
  • the method may include transmitting a second signaling to the base station as a CSI report in one of two CSI report modes, the CSI report including an indication of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, the CSI report mode based on the number of the one or more PMI layer groups.
  • the operations of 804 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 804 may be performed by a device as described with reference to FIG.1.
  • FIG.9 illustrates a flowchart of a method 900 that supports unified CSI codebook in accordance with aspects of the present disclosure.
  • the operations of the method 900 may be implemented by a device or its components as described herein.
  • the operations of the method 900 may be performed by a UE 104 as described with reference to FIGs.1 through 7.
  • the device may execute set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include selecting one PMI layer group of the two PMI layer groups. The operations of 902 may be performed in accordance with examples as described herein.
  • FIG.10 illustrates a flowchart of a method 1000 that supports unified CSI codebook in accordance with aspects of the present disclosure.
  • the operations of the method 1000 may be implemented by a device or its components as described herein.
  • the operations of the method 1000 may be performed by a network entity 102, such as a base station as described with reference to FIGs.1 through 7.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include transmitting a first signaling to a UE as a CSI reporting setting, the CSI reporting setting indicates a CMR for at least two CSI-RS segments corresponding to multiple PMI layers associated with one or more PMI layer groups.
  • the operations of 1002 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1002 may be performed by a device as described with reference to FIG.1.
  • the method may include receiving a second signaling from the UE as a CSI report in one of two CSI report modes, the CSI report including an indication of a number of the one or more PMI layer groups and a PMI corresponding to the multiple PMI layers, the CSI report mode based on the number of the one or more PMI layer groups.
  • the operations of 1004 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1004 may be performed by a device as described with reference to FIG.1.
  • FIG.11 illustrates a flowchart of a method 1100 that supports unified CSI codebook in accordance with aspects of the present disclosure. The operations of the method 1100 may be Attorney Docket No.
  • the operations of the method 1100 may be performed by a network entity 102, such as a base station as described with reference to FIGs.1 through 7.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include selecting one PMI layer group of the two PMI layer groups.
  • the operations of 1102 may be performed in accordance with examples as described herein.
  • aspects of the operations of 1102 may be performed by a device as described with reference to FIG.1.
  • a device as described with reference to FIG.1.
  • the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
  • the various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed with a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
  • non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • Any connection may be properly termed a computer-readable medium.
  • Disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.
  • “or” as used in a list of items indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Similarly, a list of one or more of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions.
  • an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure.
  • the Attorney Docket No. SMM920220117-WO-PCT Lenovo Docket No. SMM920220117-WO-PCT 52 phrase “based on” shall be construed in the as the phrase “based at least in part on”.
  • a “set” may include one or more elements.
  • the terms “transmitting,” “receiving,” or “communicating,” when referring to a network entity, may refer to any portion of a network entity (e.g., a base station, a CU, a DU, a RU) of a RAN communicating with another device (e.g., directly or via one or more other network entities).
  • a network entity e.g., a base station, a CU, a DU, a RU
  • another device e.g., directly or via one or more other network entities.
  • example used herein means “serving as an example, instance, or illustration,” and not “preferred” or “advantageous over other examples.”
  • the detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described example. [0134]
  • the description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Abstract

Divers aspects de la présente divulgation concernent un appareil, tel qu'un équipement utilisateur (UE), qui reçoit une première signalisation en provenance d'une station de base en tant que réglage de rapport d'informations d'état de canal (CSI). Le réglage de rapport de CSI indique une ressource de mesure de canal (CMR) pour au moins deux segments de signal de référence (RS) de CSI correspondant à de multiples couches d'indicateur de matrice de précodeur (PMI) associées à un ou plusieurs groupes de couches de PMI. L'UE transmet une seconde signalisation à la station de base en tant que rapport de CSI dans l'un de deux modes de rapport de CSI. Le rapport de CSI comprend une indication d'un nombre du ou des groupes de couches de PMI et d'un PMI correspondant aux multiples couches de PMI, le mode de rapport de CSI étant basé sur le nombre du ou des groupes de couches de PMI.
PCT/IB2023/058790 2022-09-14 2023-09-06 Livre de codes d'informations d'état de canal unifié WO2024057140A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202263406685P 2022-09-14 2022-09-14
US63/406,685 2022-09-14

Publications (1)

Publication Number Publication Date
WO2024057140A1 true WO2024057140A1 (fr) 2024-03-21

Family

ID=88017800

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2023/058790 WO2024057140A1 (fr) 2022-09-14 2023-09-06 Livre de codes d'informations d'état de canal unifié

Country Status (1)

Country Link
WO (1) WO2024057140A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210143870A1 (en) * 2017-06-16 2021-05-13 Telefonaktiebolaget Lm Ericsson (Publ) Channel State Information for Reference Signals in a Wireless Communication System
WO2021161220A1 (fr) * 2020-02-13 2021-08-19 Telefonaktiebolaget Lm Ericsson (Publ) Retour csi pour transmission conjointe non cohérente

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210143870A1 (en) * 2017-06-16 2021-05-13 Telefonaktiebolaget Lm Ericsson (Publ) Channel State Information for Reference Signals in a Wireless Communication System
WO2021161220A1 (fr) * 2020-02-13 2021-08-19 Telefonaktiebolaget Lm Ericsson (Publ) Retour csi pour transmission conjointe non cohérente

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LENOVO: "CSI enhancements for high mobility and coherent JT", vol. RAN WG1, no. Toulouse; 20220822 - 20220826, 12 August 2022 (2022-08-12), XP052274146, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_110/Docs/R1-2206211.zip R1-2206211.docx> [retrieved on 20220812] *

Similar Documents

Publication Publication Date Title
WO2021154707A1 (fr) Signalisation de corrélation de faisceau à travers des bandes de fréquences d&#39;ondes millimétriques
WO2021146829A1 (fr) Rétroaction d&#39;informations d&#39;état de canal pour de multiples points de transmission-réception
WO2021154655A1 (fr) Sélection et indication de groupe d&#39;antennes dans des bandes de fréquences
WO2023175411A1 (fr) Rapport d&#39;informations d&#39;état de canal au moyen de types de signaux de référence mixtes
WO2023183195A1 (fr) Configurations de signal de référence d&#39;informations d&#39;état de canal pour adaptation de port d&#39;antenne dynamique
US20240048209A1 (en) Multi-mode precoding matrix information report for orbital angular momentum based communication system
US20240048214A1 (en) Techniques for communicating using a reconfigurable surface
WO2022036677A1 (fr) Commutation d&#39;antennes pour signaux de référence
WO2021247903A1 (fr) Sélection de précodeur à large bande et à sous-bande
WO2024057140A1 (fr) Livre de codes d&#39;informations d&#39;état de canal unifié
US20240154666A1 (en) Power constraint aware channel state information feedback for coherent joint transmission
WO2024100640A1 (fr) Améliorations d&#39;informations d&#39;état de canal destinées à des économies d&#39;énergie de réseau
WO2024055277A1 (fr) Communication de surface intelligente reconfigurable à grande largeur de bande
WO2024092481A1 (fr) Rapport d&#39;informations d&#39;état de canal pour de multiples points de transmission-réception
WO2023245533A1 (fr) Adaptation et division de puissance pour tpmi à haute résolution en liaison montante
US20240048311A1 (en) Techniques for interpreting downlink control information (dci) fields in non-codebook-based multi-panel deployments with dynamic panel switching
WO2023248058A1 (fr) Synchronisation pour rapport de csi
WO2024031597A1 (fr) Techniques de transmission conjointe cohérente sur de multiples ensembles de points d&#39;émission-réception
US20240031098A1 (en) Techniques for single frequency network sounding reference signal transmission
US20240097822A1 (en) Techniques for spatial domain basis function refinement
WO2023206348A1 (fr) Sélection de point de réception de transmission pour transmissions conjointes cohérentes
WO2024065598A1 (fr) Commutation de mode de point de réception de transmission
WO2023197094A1 (fr) Sélection de faisceaux pour signaux de référence apériodiques
US20240048327A1 (en) Techniques for interpreting downlink control information (dci) fields in codebook-based multi-panel deployments with dynamic panel switching
US20240089967A1 (en) Scheduling restrictions during a group-based measurement for multiple transmission and reception points

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23768647

Country of ref document: EP

Kind code of ref document: A1