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WO2022032259A1 - Rapport csi pour transmission conjointe non cohérente (ncjt) - Google Patents

Rapport csi pour transmission conjointe non cohérente (ncjt) Download PDF

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Publication number
WO2022032259A1
WO2022032259A1 PCT/US2021/071010 US2021071010W WO2022032259A1 WO 2022032259 A1 WO2022032259 A1 WO 2022032259A1 US 2021071010 W US2021071010 W US 2021071010W WO 2022032259 A1 WO2022032259 A1 WO 2022032259A1
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WIPO (PCT)
Prior art keywords
csi
ncjt
dpb
components
csi report
Prior art date
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Ceased
Application number
PCT/US2021/071010
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English (en)
Inventor
Victor SERGEEV
Alexei Davydov
Bishwarup Mondal
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Intel Corp
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Intel Corp
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Publication date
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Publication of WO2022032259A1 publication Critical patent/WO2022032259A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • 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
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal

Definitions

  • NCJT NON-COHERENT JOINT TRANSMISSION
  • Embodiments pertain to wireless communications. Some embodiments relate to wireless networks including 3 GPP (Third Generation Partnership Project) and fifth-generation (5G) networks including 5G new radio (NR) (or 5G-NR) networks. Some embodiments pertain to reporting channel state information (CSI) by a user equipment (UE) for non-coherent joint transmission (NCJT) of a physical downlink shared channel (PDSCH).
  • 3 GPP Transmissiond Generation Partnership Project
  • 5G fifth-generation
  • 5G networks including 5G new radio (NR) (or 5G-NR) networks.
  • Some embodiments pertain to reporting channel state information (CSI) by a user equipment (UE) for non-coherent joint transmission (NCJT) of a physical downlink shared channel (PDSCH).
  • CSI channel state information
  • UE user equipment
  • NJT non-coherent joint transmission
  • PDSCH physical downlink shared channel
  • FIG. 1 A illustrates an architecture of a network, in accordance with some embodiments.
  • FIG. IB and FIG. 1C illustrate a non-roaming 5G system architecture in accordance with some embodiments.
  • FIG. 2A illustrates transmission of a physical downlink shared channel (PDSCH) from more than one transmission-reception point (TRP), in accordance with some embodiments.
  • FIG. 2B is a schematic representation for different channel-state information (CSI) reporting configurations, in accordance with some embodiments.
  • CSI channel-state information
  • FIG. 3 illustrates a functional bock diagram of a wireless communication device, in accordance with some embodiments.
  • Rel. 16 NR In Rel. 16 NR specification enhancements to support simultaneous downlink (DL) transmission from multiple transmission and reception points (TRP) were introduced.
  • Rel. 16 NR supports non-coherent joint transmission (NCJT), where multiple TRP transmit different transmission layers of one physical downlink shared channel (PDSCH) or multiple TRP transmit multiple PDSCH.
  • NJT non-coherent joint transmission
  • Newly introduced enhancements for multi-TRP transmission may require further enhancements for channel state information (CSI) feedback in order to improve efficiency of scheduling, precoding (including beamforming and spatial multiplexing), modulation and coding scheme (MCS) selection operations at the Next Generation Node B (gNB) side.
  • CSI channel state information
  • precoding including beamforming and spatial multiplexing
  • MCS modulation and coding scheme
  • Some embodiments are directed to a user equipment (UE) configured for operating in a fifth-generation (5G) new radio (NR) system.
  • UE user equipment
  • 5G fifth-generation
  • NR new radio
  • CSI channel-state information
  • PDSCH physical downlink shared channel
  • NJT non- coherent joint transmission
  • the UE may be configured to decode/process CSI reference signals (CSI-RS) and resources for CSI interference measurement (CSI-IM) received from a first TRP (TRPl) and a second TRP (TRP2).
  • CSI-RS CSI reference signals
  • CSI-IM CSI interference measurement
  • TRPl first TRP
  • TRP2 TRP2
  • TRP2 TRP2
  • the UE may also be configured to generate CSI components corresponding to NCJT, and corresponding to dynamic point selection (DPS) and/or dynamic point blanking
  • the UE may also be configured to encode a CSI report for transmission to a generation Node B (gNB) via a PUCCH or a PUSCH.
  • the CSI report may include one or more parts and each part may be encoded separately.
  • the one or more parts of the CSI report may include components for the NCJT and components for the DPS/DPB.
  • the UE may also be configured to decode the PDSCH transmission from the TRPs.
  • the UE may decode the PDSCH transmission from the TRPs based on information provided in a downlink control information (DCI) format and based on a RRC configuration.
  • the gNB may use information provided in the CSI report for transmission of the PDSCH.
  • DCI downlink control information
  • the UE may also be configured to decode radio-resource control (RRC) signalling from the gNB.
  • the RRC signalling may include a CSI report setting for the CSI feedback reporting.
  • the CSI report setting may include configuration parameters for the CSI report.
  • the CSI report setting is configurable to indicate a set of CSI components for the NCJT (S_NCJT) and a set of the CSI components for the DPS/DPB (S DPB).
  • the UE may also be configured to decode the PDSCH.
  • the PDSCH may comprise the NCJT in which different transmission layers of the same PDSCH are received from the first and second TRPs. In some other embodiments, a different PDSCH may be received from each TRP, although the scope of the embodiments is not limited in this respect.
  • the CSI components may comprise: a CSI- RS Resource Indicator (CRI), a Channel quality indicator (CQI), a Rank indicator (RI), a Precoding matrix indicator (PMI), and a Layer Indicator (LI).
  • the CSI report setting may indicate whether the CSI report is to comprise one or two parts and may further indicate which of the CSI components are to be reported in the CSI report.
  • the UE may determine which of the CSI components are to be included in each part.
  • the UE may decide which CSI components are included in each part.
  • the set of CSI components for the NCJT may comprise the RI for the TRP1 (RI1), the RI for the TRP2 (RI2), the PMI for the TRP1 (PMI1), the PMI for the TRP2 (PMI2) and the CQI for the NCJT (CQI NCJT).
  • the set of CSI components for the DPS/DPB may comprise the RI for the DPS/DPB (RI DPB), the PMI for the DPS/DPB (PMIjDPB) and the CQI for the DPS/DPB (CQI_DPB).
  • the set of CSI components for the NCJT may further include the LI for the NCJT (LI NCJT), and the set of CSI components for the DPS/DPB may further include the LI for the DPS/DPB (L1_DPB).
  • the UE may refrain from including one or more other components of the set of CSI components for the NCJT in the second part of the CSI report.
  • the one or more other components of the set of CSI components for the NCJT that are not in the second part of the CSI report because they may be unnecessary since one or more components reported in part one is/are equal to zero. In this way, the amount of CSI information reported may be reduced.
  • the UE may refrain from reporting CSI components for NCJT in part two of the CSI report.
  • the UE may be configured to refrain from reporting CSI components for NCJT, such as a CQI NCJT, a LI NCJT, in part two of the CSI report.
  • the UE may be configured to refrain from reporting CSI components for NCJT in part two of the CSI report.
  • the UE may refrain from reporting CSI components for NCJT, such as the CQI NCJT in part two of the CSI report.
  • the UE may be configured to calculate the
  • the UE may calculate the CSI components for the DPS/DPB using the CSI-RS received the TRPl and the TRP2.
  • the UE may be configured to further calculate at least the RI and the CQI from the CSI-IMs.
  • the UE may also use the CSI- IMs to calculate the LI and PMI, although this is not a requirement.
  • the UE may be configured to decode the PDSCH transmission comprising the NCJT from the first and second TRPs based on information provided to the gNB in the CSI report, and in accordance with the DPS/DPB in which one of TRPs is transmitting when the other TRP is not transmitting for DPB operation.
  • the UE may be configured to report a UE capability to include a number of CPUs occupied simultaneously for processing a CSI report with the NCJT. In these embodiments, the UE may indicate the number of supported simultaneous CSI calculations (i.e., number of CPUs occupied).
  • Some embodiments are directed to non-transitoiy computer- readable storage medium that stores instructions for execution by processing circuitry of a user equipment (UE) configured for operating in a fifth-generation
  • UE user equipment
  • the instructions may configure the processing circuitry of the UE for channel-state information (CSI) feedback reporting for a physical downlink shared channel (PDSCH) transmission comprising a noncoherent joint transmission (NCJT) from transmission reception points (TRPs).
  • CSI channel-state information
  • PDSCH physical downlink shared channel
  • NJT noncoherent joint transmission
  • TRPs transmission reception points
  • CSI-RS channel-state information reference signals
  • CSI-IM CSI interference measurement
  • the gNB may encode radio-resource control (RRC) signalling for transmission to the UE, the RRC signalling including a CSI report setting for CSI feedback reporting.
  • the CSI report setting may include configuration parameters for a CSI report.
  • the CSI report setting may be configurable to indicate a set of CSI components for the NCJT (S NCJT) and a set of the CSI components for dynamic point selection (DPS) and/or dynamic point blanking (DPB) (DPS/DPB) (S DPB).
  • the gNB may also decode the CSI report received from the UE, the CSI report including one or more parts, each part encoded separately.
  • the one or more parts of the CSI report may include components for the NCJT and components for the DPS/DPB.
  • the gNB may also encode the PDSCH transmission in accordance with the NCJT and the DPS/DPB based at least in part on the CSI report, from the TRPs.
  • the gNB may be configured to encode the PDSCH for transmission of different transmission layers from each of the first and second TRPs.
  • the gNB comprises both the TRPl and the TRP2.
  • FIG. 1 A illustrates an architecture of a network in accordance with some embodiments.
  • the network 140A is shown to include user equipment (UE) 101 and UE 102.
  • the UEs 101 and 102 are illustrated as smartphones (e.g., handheld touchscreen mobile computing devices connectable to one or more cellular networks) but may also include any mobile or non-mobile computing device, such as Personal Data Assistants (PDAs), pagers, laptop computers, desktop computers, wireless handsets, drones, or any other computing device including a wired and/or wireless communications interface.
  • PDAs Personal Data Assistants
  • the UEs 101 and 102 can be collectively referred to herein as UE 101, and UE 101 can be used to perform one or more of the techniques disclosed herein.
  • Any of the radio links described herein may operate according to any exemplary radio communication technology and/or standard.
  • LTE and LTE-Advanced are standards for wireless communications of high-speed data for UE such as mobile telephones.
  • carrier aggregation is a technology according to which multiple carrier signals operating on different frequencies may be used to carry communications for a single UE, thus increasing the bandwidth available to a single device.
  • carrier aggregation may be used where one or more component carriers operate on unlicensed frequencies.
  • Embodiments described herein can be used in the context of any spectrum management scheme including, for example, dedicated licensed spectrum, unlicensed spectrum, (licensed) shared spectrum (such as Licensed Shared Access (LSA) in 2.3-2A GHz, 3.4-3.6 GHz, 3 6-3.8 GHz, and further frequencies and Spectrum Access System (SAS) in 3.55-3.7 GHz and further frequencies).
  • LSA Licensed Shared Access
  • SAS Spectrum Access System
  • Embodiments described herein can also be applied to different Single Carrier or OFDM flavors (CP-OFDM, SC-FDMA, SC -OFDM, filter bank-based multicarrier (FBMC), OFDMA, etc.) and in particular 3GPP NR (New Radio) by allocating the OFDM carrier data bit vectors to the corresponding symbol resources.
  • any of the UEs 101 and 102 can comprise an Intemet-of-Things (toT) UE or a Cellular IoT (CIoT) UE, which can comprise a network access layer designed for low-power IoT applications utilizing short-lived UE connections.
  • any of the UEs 101 and 102 can include a narrowband (NB) IoT UE (e.g., such as an enhanced NB- IoT (eNB-IoT) UE and Further Enhanced (FeNB-IoT) UE).
  • NB narrowband
  • eNB-IoT enhanced NB- IoT
  • FeNB-IoT Further Enhanced
  • An IoT UE can utilize technologies such as machine-to-machine (M2M) or machine-type communications (MTC) for exchanging data with an MTC server or device via a public land mobile network (PLMN), Proximity-Based Service (ProSe) or device-to-device (D2D) communication, sensor networks, or IoT networks.
  • M2M machine-to-machine
  • MTC machine-type communications
  • PLMN public land mobile network
  • D2D device-to-device
  • sensor networks or IoT networks.
  • M2M or MTC exchange of data may be a machine-initiated exchange of data.
  • An IoT network includes interconnecting IoT UEs, which may include uniquely identifiable embedded computing devices (within the Internet infrastructure), with short-lived connections.
  • the IoT UEs may execute background applications (e.g., keep-alive messages, status updates, etc.) to facilitate the connections of the IoT network.
  • any of the UEs 101 and 102 can include enhanced MTC (eMTC) UEs or further enhanced MTC (FeMTC) UEs.
  • eMTC enhanced MTC
  • FeMTC enhanced MTC
  • the UEs 101 and 102 may be configured to connect, e.g., communicatively couple, with a radio access network (RAN) 110.
  • the RAN 110 may be, for example, an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN), aNextGen RAN (NG RAN), or some other type of RAN.
  • UMTS Evolved Universal Mobile Telecommunications System
  • E-UTRAN Evolved Universal Mobile Telecommunications System
  • NG RAN NextGen RAN
  • the UEs 101 and 102 utilize connections 103 and 104, respectively, each of which comprises a physical communications interface or layer (discussed in further detail below); in this example, the connections 103 and 104 are illustrated as an air interface to enable communicative coupling and can be consistent with cellular communications protocols, such as a Global System for Mobile Communications (GSM) protocol, a code-division multiple access (CDMA) network protocol, a Push-to- Talk (PTT) protocol, a PTT over Cellular (POC) protocol, a Universal Mobile Telecommunications System (UMTS) protocol, a 3GPP Long Term Evolution (LTE) protocol, a fifth-generation (5G) protocol, a New Radio (NR) protocol, and the like.
  • GSM Global System for Mobile Communications
  • CDMA code-division multiple access
  • PTT Push-to- Talk
  • POC PTT over Cellular
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • 5G fifth-generation
  • NR New Radio
  • the UEs 101 and 102 may further directly exchange communication data via a ProSe interface 105.
  • the ProSe interface 105 may alternatively be referred to as a sidelink interface comprising one or more logical channels, including but not limited to a Physical Sidelink Control Channel
  • the UE 102 is shown to be configured to access an access point (AP) 106 via connection 107.
  • the connection 107 can comprise a local wireless connection, such as, for example, a connection consistent with any IEEE 802.11 protocol, according to which the AP 106 can comprise a wireless fidelity (WiFi®) router.
  • WiFi® wireless fidelity
  • the AP 106 is shown to be connected to the Internet without connecting to the core network of the wireless system
  • the RAN 110 can include one or more access nodes that enable the connections 103 and 104.
  • These access nodes can be referred to as base stations (BSs), NodeBs, evolved NodeBs (eNBs), Next Generation NodeBs (gNBs), RAN nodes, and the like, and can comprise ground stations (e.g., terrestrial access points) or satellite stations providing coverage within a geographic area (e.g., a cell).
  • the communication nodes 111 and 112 can be transmission/reception points (TRPs).
  • the RAN 110 may include one or more RAN nodes for providing macrocells, e.g., macro RAN node 111, and one or more RAN nodes for providing femtocells or picocells (e.g., cells having smaller coverage areas, smaller user capacity, or higher bandwidth compared to macrocells), e.g., low power (LP) RAN node 112.
  • RAN nodes 111 and 112 can terminate the air interface protocol and can be the first point of contact for the UEs 101 and 102.
  • any of the RAN nodes 111 and 112 can fulfill various logical functions for the RAN 110 including, but not limited to, radio network controller (RNC) functions such as radio bearer management, uplink and downlink dynamic radio resource management and data packet scheduling, and mobility management.
  • RNC radio network controller
  • any of the nodes 111 and/or 112 can be a new generation Node-B (gNB), an evolved node-B (eNB), or another type of RAN node.
  • gNB Node-B
  • eNB evolved node-B
  • another type of RAN node another type of RAN node.
  • the RAN 110 is shown to be communicatively coupled to a core network (CN) 120 via an SI interface 113.
  • the CN 120 may be an evolved packet core (EPC) network, a NextGen Packet Core (NPC) network, or some other type of CN (e.g., as illustrated in reference to FIGS. IB- 1C).
  • EPC evolved packet core
  • NPC NextGen Packet Core
  • the SI interface 113 is split into two parts: the Sl-U interface 114, which carries traffic data between the RAN nodes 111 and 112 and the serving gateway (S-GW) 122, and the SI -mobility management entity (MME) interface 115, which is a signaling interface between the RAN nodes 111 and 112 and MMEs 121.
  • S-GW serving gateway
  • MME SI -mobility management entity
  • the CN 120 comprises the MMEs 121, the S-GW 122, the Packet Data Network (PDN) Gateway (P-GW) 123, and a home subscriber server (HSS) 124.
  • the MMEs 121 may be similar in function to the control plane of legacy Serving General Packet Radio Service (GPRS) Support Nodes (SGSN).
  • the MMEs 121 may manage mobility embodiments in access such as gateway selection and tracking area list management.
  • the HSS 124 may comprise a database for network users, including subscription-related information to support the network entities handling of communication sessions.
  • the CN 120 may comprise one or several HSSs 124, depending on the number of mobile subscribers, on the capacity of the equipment, on the organization of the network, etc.
  • the HSS 124 can provide support for routing/roaming, authentication, authorization, naming/addressing resolution, location dependencies, etc.
  • the S-GW 122 may terminate the SI interface 113 towards the RAN 110, and routes data packets between the RAN 110 and the CN 120.
  • the S-GW 122 may be a local mobility anchor point for inter-RAN node handovers and also may provide an anchor for inter-3 GPP mobility. Other responsibilities of the S-GW 122 may include a lawful intercept, charging, and some policy enforcement.
  • the P-GW 123 may terminate an SGi interface toward a PDN.
  • the P-GW 123 may route data packets between the EPC network 120 and external networks such as a network including the application server 184 (alternatively referred to as application function (AF)) via an Internet Protocol (IP) interface 125.
  • the P-GW 123 can also communicate data to other external networks 131 A, which can include the Internet, IP multimedia subsystem (IPS) network, and other networks.
  • the application server 184 may be an element offering applications that use IP bearer resources with the core network (e.g., UMTS Packet Services (PS) domain, LTE PS data services, etc.).
  • PS UMTS Packet Services
  • LTE PS data services etc.
  • the P-GW 123 is shown to be communicatively coupled to an application server 184 via an IP interface 125.
  • the application server 184 can also be configured to support one or more communication services (e.g., Voice-over- Internet Protocol (VoIP) sessions, PTT sessions, group communication sessions, social networking services, etc.) for the UEs 101 and 102 via the CN 120.
  • the P-GW 123 may further be a node for policy enforcement and charging data collection.
  • Policy and Charging Rules Function (PCRF) 126 is the policy and charging control element of the CN 120.
  • PCRF Policy and Charging Rules Function
  • HPLMN Home Public Land Mobile Network
  • IP-CAN Internet Protocol Connectivity Access Network
  • PCRFs In a roaming scenario with a local breakout of traffic, there may be two PCRFs associated with a UE's IP- CAN session: a Home PCRF (H-PCRF) within an HPLMN and a Visited PCRF (V-PCRF) within a Visited Public Land Mobile Network (VPLMN).
  • the PCRF 126 may be communicatively coupled to the application server 184 via the P- GW 123.
  • the communication network 140 A can be an IoT network or a 5G network, including 5G new radio network using communications in the licensed (5GNR) and the unlicensed (5G NR-U) spectrum.
  • One of the current enablers of IoT is the narrowband-IoT (NB-IoT).
  • An NG system architecture can include the RAN 110 and a 5G network core (5GC) 120.
  • the NG-RAN 110 can include a plurality of nodes, such as gNBs and NG-eNBs.
  • the core network 120 e.g., a 5G core network or 5GC
  • AMF access and mobility function
  • UPF user plane function
  • the AMF and the UPF can be communicatively coupled to the gNBs and the NG-eNBs via NG interfaces. More specifically, in some embodiments, the gNBs and the NG-eNBs can be connected to the AMF by NG- C interfaces, and to the UPF by NG-U interfaces. The gNBs and the NG-eNBs can be coupled to each other via Xn interfaces.
  • the NG system architecture can use reference points between various nodes as provided by 3GPP Technical Specification (TS) 23.501 (e.g., V15.4.0, 2018-12).
  • TS 3GPP Technical Specification
  • each of the gNBs and the NG-eNBs can be implemented as a base station, a mobile edge server, a small cell, a home eNB, and so forth.
  • a gNB can be a master node (MN) and NG-eNB can be a secondary node (SN) in a 5G architecture.
  • MN master node
  • SN secondary node
  • FIG. IB illustrates a non-roaming 5G system architecture in accordance with some embodiments.
  • a 5G system architecture 140B in a reference point representation. More specifically, UE 102 can be in communication with RAN 110 as well as one or more other 5G core (5GC) network entities.
  • 5GC 5G core
  • the 5G system architecture 140B includes a plurality of network functions (NFs), such as access and mobility management function (AMF) 132, session management function (SMF) 136, policy control function (PCF) 148, application function (AF) 150, user plane function (UPF) 134, network slice selection function (NSSF) 142, authentication server function (AUSF) 144, and unified data management (UDM)/home subscriber server (HSS) 146.
  • the UPF 134 can provide a connection to a data network (DN) 152, which can include, for example, operator services, Internet access, or third-party services.
  • DN data network
  • the AMF 132 can be used to manage access control and mobility and can also include network slice selection functionality.
  • the SMF 136 can be configured to set up and manage various sessions according to network policy.
  • the UPF 134 can be deployed in one or more configurations according to the desired service type.
  • the PCF 148 can be configured to provide a policy framework using network slicing, mobility management, and roaming (similar to PCRF in a 4G communication system).
  • the UDM can be configured to store subscriber profiles and data (similar to an HSS in a 4G communication system).
  • the 5G system architecture 140B includes an IP multimedia subsystem (IMS) 168B as well as a plurality of IP multimedia core network subsystem entities, such as call session control functions (CSCFs).
  • IMS IP multimedia subsystem
  • CSCFs call session control functions
  • the IMS 168B includes a CSCF, which can act as a proxy CSCF (P-CSCF) 162BE, a serving CSCF (S-CSCF) 164B, an emergency CSCF (E-CSCF) (not illustrated in FIG. IB), or interrogating CSCF (I-CSCF) 166B.
  • the P-CSCF 162B can be configured to be the first contact point for the UE 102 within the IM subsystem (IMS) 168B.
  • the S-CSCF 164B can be configured to handle the session states in the network, and the E-CSCF can be configured to handle certain embodiments of emergency sessions such as routing an emergency request to the correct emergency center or PSAP.
  • the I-CSCF 166B can be configured to function as the contact point within an operator's network for all IMS connections destined to a subscriber of that network operator, or a roaming subscriber currently located within that network operator's service area.
  • the I-CSCF 166B can be connected to another IP multimedia network 170E, e.g. an IMS operated by a different network operator.
  • the UDM/HSS 146 can be coupled to an application server 160E, which can include a telephony application server (TAS) or another application server (AS).
  • the AS 160B can be coupled to the IMS 168B via the S-CSCF 164B or the I-CSCF 166B.
  • FIG. IB illustrates the following reference points: N1 (between the UE 102 and the AMF 132), N2 (between the RAN 110 and the AMF 132), N3 (between the RAN 110 and the UPF 134), N4 (between the SMF 136 and the UPF 134), N5 (between the PCF 148 and the AF 150, not shown), N6 (between the UPF 134 and the DN 152),
  • N7 (between the SMF 136 and the PCF 148, not shown), N8 (between the UDM 146 and the AMF 132, not shown), N9 (between two UPFs 134, not shown),
  • N10 between the UDM 146 and the SMF 136, not shown
  • N11 between the AMF 132 and the SMF 136, not shown
  • N12 between the AUSF 144 and the AMF 132, not shown
  • N13 between the AUSF 144 and the UDM 146, not shown
  • N14 between two AMFs 132, not shown
  • N15 between the PCF 148 and the AMF 132 in case of a non-roaming scenario, or between the PCF 148 and a visited network and AMF 132 in case of a roaming scenario, not shown
  • N16 between two SMFs, not shown
  • N22 between AMF 132 and NSSF 142, not shown.
  • FIG. 1C illustrates a 5G system architecture HOC and a service- based representation.
  • system architecture HOC can also include a network exposure function (NEF) 154 and a network repository function (NRF) 156.
  • NEF network exposure function
  • NRF network repository function
  • 5G system architectures can be service-based and interaction between network functions can be represented by corresponding point-to-point reference points Ni or as service-based interfaces.
  • service-based representations can be used to represent network functions within the control plane that enable other authorized network functions to access their services.
  • 5G system architecture HOC can include the following service-based interfaces: Namf 158H (a service-based interface exhibited by the AMF 132), Nsmf 1581 (a service-based interface exhibited by the SMF 136), Nnef 158B (a service-based interface exhibited by the NEF 154), Npcf 158D (a service-based interface exhibited by the PCF 148), a Nudm 158E (a service-based interface exhibited by the UDM 146), Naf 158F (a service-based interface exhibited by the AF 150), Nnrf 158C (a service-based interface exhibited by the NRF 156), Nnssf 158 A (a service-based interface exhibited by the NSSF 142), Nausf 158G (a service-based interface exhibited by the AU
  • any of the UEs or base stations described in connection with FIGS. 1A-1C can be configured to perform the functionalities described herein.
  • NR next generation wireless communication system
  • 5G next generation wireless communication system
  • NR new radio
  • 3G 3 GPP LTE- Advanced with additional potential new Radio Access Technologies (RATs) to enrich people's lives with better, simple, and seamless wireless connectivity solutions.
  • RATs Radio Access Technologies
  • NR-unlicensed a short-hand notation of the NR-based access to unlicensed spectrum, is a technology that enables the operation of NR systems on the unlicensed spectrum.
  • FIG. 2A illustrates transmission of a physical downlink shared channel (PDSCH) from more than one transmission-reception point (TRP), in accordance with some embodiments.
  • CSI reporting optimized for NCJT is specified in LTE Rel. 15 as part of feCoMP work item.
  • LTE CSI reporting for NCJT transmission is designed in framework of single CSI process with multiple CSI-RS resources for channel measurements and multiple hypothesis of PDSCH transmission for CSI calculation, where UE reports CSI for one hypothesis and selected hypothesis is indicated by CIS-RS resource indicator (CRI).
  • transmission hypothesis includes NCJT, dynamic point blanking and dynamic point selection (DPByDPS) for 2 TRP.
  • DPByDPS dynamic point blanking and dynamic point selection
  • NCJT is presented for NR.
  • Method of CSI encoding
  • Some embodiments disclosed herein aim to improve performance of 5GNR system with NCJT.
  • CSI Channel state information
  • CSI feedback is used in 5GNR system to assist scheduling, link adaptation, precoding and spatial multiplexing operations for DL transmission.
  • CSI is obtained based on CSI measurements via CSI reference signals (CSI-RS) and/or CSI interference measurement signals (CSI-IM) transmitted from a TRP.
  • CSI report is transmitted from user equipment (UE) to gNB via physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH).
  • CSI-RS Resource Indicator indicates CSI-RS resource for which other CSI components are reported
  • Channel quality indicator contains information on the modulation and coding scheme recommended by the UE for DL transmission;
  • Rank indicator contains information on the number of PDSCH transmission layers (rank of transmission) recommended by the UE for DL transmission;
  • Precoding matrix indicator contains information on the precoding matrix recommended by the UE for DL transmission.
  • PMI is a set of indexes corresponding to specific precoding matrix from specified finite set of precoding matrixes, called codebook.
  • the rank of precoding matrix is determined by RI,
  • Layer Indicator (LI) - indicates which column of the precoder matrix of the reported PMI corresponds to the strongest layer of the codeword (CW) corresponding to the largest reported wideband CQI.
  • CSI report may comprise from one or two parts, where each part is encoded separately using channel coding procedure. For CSI encoding with two parts payload size of part 1 can be derived based on higher layer configuration, payload size of part 2 depends on the actual content of part 1. Thus, dynamic overhead reduction can be supported.
  • priority rules are defined in NR, in some cases CSI report with lower priority than other CSI report(s) can be dropped and not reported.
  • CSI feedback for NCJT can be used together with CSI feedback for dynamic point selection (DPS) and dynamic point blanking (DPB).
  • CSI report for DPB and DPS has similar content comparing to Rel. 15 NR CSI, but CSI measurements can be done in different way e.g. using certain CSI-RS resources for channel measurements and CSI-IM/CSI-RS resources for interference measurements.
  • CSI feedback for NCJT and DPB can be configured using one or multiple CSI report setting, where one CSI report corresponds to a CSI report setting. In one embodiment one CSI report is used for NCJT and one or multiple CSI reports are used for DPB and/or DPS (configuration 1).
  • one CSI report is used for NCJT and DPB/DPS, where in one embodiment CSI components corresponding to NCJT and DPB/DPS are reported (configuration 2), in other embodiment CSI components corresponding to NCJT or DPB/DPS are reported (configuration 3).
  • CSI configurations described above are schematically represented in FIG. 2B.
  • CSI-RS resource 1 corresponds to TRP 1 and CSI-RS resource corresponds to TRP 2.
  • CSI components corresponding to NCJT may be dropped for configuration 1, configuration 2 and configuration 3.
  • CSI for NCJT corresponds to the following CSI components: RI corresponding to TRP 1 (RI1), RI corresponding to TRP 2
  • RI2 PMI corresponding to TRP 1 (PMI1)
  • PMI corresponding to TRP 2 PMI2
  • CQI_NCJT CQI for NCJT
  • CSI for NCJT corresponds to the following components: RI corresponding to TRP 1 (RI1), RI corresponding to TRP 2
  • RI2 PMI corresponding to TRP 1 (PMI1), PMI corresponding to TRP 2 (PMI2), CQI corresponding to TRP 1 (CQI1), CQI corresponding to TRP 2 (CQI2).
  • CSI for DPB/DPS corresponds to the following CSI components.
  • RI for DPB/DPS RI_DPB/DPS
  • PMI for DPB/DPS PMI_DPB/DPS
  • CQI for DPB/DPS CQI_DPB/DPS
  • LI NCJT is included in CSI for NCJT.
  • LI DPB/DPS is included in CSI for
  • LI corresponding to TRP 1 (LIl) LI corresponding to TRP 2 (LI2) is included in CSI for NCJT.
  • CRI is included in CSI for NC-JT and/or
  • RI1, RI2, CQI NCJT are reported in CSI part 1; PMI1, PMI2 are reported in CSI part 2. In other embodiment RI1, RI2 are reported in CSI part 1; PMI1, PML2, CQI NCJT are reported in CSI part 2. [0086] In one embodiment, RI1, RI2, CQI1, CQI2 are reported in CSI part 1; PMI1, PMI2 are reported in CSI part 2. In other embodiment RI1, RI2 are reported in CSI part 1; PMI1, PMI2, CQI1, CQI2 are reported in CSI part 2.
  • RI1, RI2, PMI1, PMI2, CQI_NCJT are reported in CSI part 2.
  • RI1, RI2, PMI1, PMI2, CQI1, CQI2 are reported in CSI part 2.
  • CSI components corresponding to NC-JT in CSI part 2 are not reported by the UE.
  • CQI NCJT is equal to 0, CSI components corresponding to NC-JT in CSI part 2 are not reported by the UE.
  • CSI components corresponding to NC-JT in CSI part 2 are not reported by the UE (e.g. RI DPB/DPS > RI1 + RI2).
  • CSI components corresponding to NC-JT in CSI part 2 are not reported by the UE.
  • CRI values RI1, CQI NCJT are reported in CSI part 1 and PMI1, RI2, PMI2 are reported in CSI part 2; for other subset of CRI values RI DPB/DPS, CQI DPB/DPB are reported in CSI part 1 and PMI DPB/DPS is reported in CSI part 2.
  • CRI values LI1 and LI2 are reported in CSI part 2; for other subset of CRI values LI DPB/DPS is reported in CSI part 2.
  • c is the serving cell index and N cells is the value of the higher layer parameter maxNrofServingCells;
  • s is the reportConfrgID and M s is the value of the higher layer parameter maxNrofC SI-ReportConfigurations
  • M s is the value of the higher layer parameter maxNrofC SI-ReportConfigurations
  • CPU occupancy for CSI for NCJT [00108] In one embodiment number of CPU for CSI for NCJT is indicated by the UE as part of UE capability signaling.
  • FIG. 3 illustrates a functional bock diagram of a wireless communication device, in accordance with some embodiments.
  • FIG. 3 may be suitable for use a UE or gNB and configured to perform the operations described herein.
  • the communication device 300 may also be suitable for use as a handheld device, a mobile device, a cellular telephone, a smartphone, a tablet, a netbook, a wireless terminal, a laptop computer, a wearable computer device, a femtocell, a high data rate (HDR) subscriber station, an access point, an access terminal, or other personal communication system (PCS) device.
  • HDR high data rate
  • PCS personal communication system
  • the communication device 300 may include communications circuitry 302 and a transceiver 310 for transmitting and receiving signals to and from other communication devices using one or more antennas 301.
  • the communications circuitry 302 may include circuitry that can operate the physical layer (PHY) communications and/or medium access control (MAC) communications for controlling access to the wireless medium, and/or any other communications layers for transmitting and receiving signals.
  • the communication device 300 may also include processing circuitry 306 and memory 308 arranged to perform the operations described herein. In some embodiments, the communications circuitry 302 and the processing circuitry 306 may be configured to perform operations detailed in the above figures, diagrams, and flows.
  • the communications circuitry 302 may be arranged to contend for a wireless medium and configure frames or packets for communicating over the wireless medium.
  • the communications circuitry 302 may be arranged to transmit and receive signals.
  • the communications circuitry 302 may also include circuitry for modulation/demodulation, upconversion/downconversion, filtering, amplification, etc.
  • the processing circuitry 306 of the communication device 300 may include one or more processors.
  • two or more antennas 301 may be coupled to the communications circuitry 302 arranged for sending and receiving signals.
  • the memory 308 may store information for configuring the processing circuitry 306 to perform operations for configuring and transmitting message frames and performing the various operations described herein.
  • the memory 308 may include any type of memory, including non-transitory memory, for storing information in a form readable by a machine (e.g., a computer).
  • the memory 308 may include a computer-readable storage device, read-only memory (ROM), random- access memory (RAM), magnetic disk storage media, optical storage media, flash-memory devices and other storage devices and media.
  • the communication device 300 may be part of a portable wireless communication device, such as a personal digital assistant (PDA), a laptop or portable computer with wireless communication capability, a web tablet, a wireless telephone, a smartphone, a wireless headset, a pager, an instant messaging device, a digital camera, an access point, a television, a medical device (e.g., a heart rate monitor, a blood pressure monitor, etc.), a wearable computer device, or another device that may receive and/or transmit information wirelessly.
  • PDA personal digital assistant
  • a laptop or portable computer with wireless communication capability such as a personal digital assistant (PDA), a laptop or portable computer with wireless communication capability, a web tablet, a wireless telephone, a smartphone, a wireless headset, a pager, an instant messaging device, a digital camera, an access point, a television, a medical device (e.g., a heart rate monitor, a blood pressure monitor, etc.), a wearable computer device, or another device that may receive and/or transmit information wirelessly.
  • the communication device 300 may include one or more antennas 301.
  • the antennas 301 may include one or more directional or omnidirectional antennas, including, for example, dipole antennas, monopole antennas, patch antennas, loop antennas, microstrip antennas, or other types of antennas suitable for transmission of RF signals.
  • a single antenna with multiple apertures may be used instead of two or more antennas.
  • each aperture may be considered a separate antenna.
  • MIMO multiple-input multiple-output
  • the antennas may be effectively separated for spatial diversity and the different channel characteristics that may result between each of the antennas and the antennas of a transmitting device.
  • the communication device 300 may include one or more of a keyboard, a display, a non-volatile memory port, multiple antennas, a graphics processor, an application processor, speakers, and other mobile device elements.
  • the display may be an LCD screen including a touch screen.
  • the communication device 300 is illustrated as having several separate functional elements, two or more of the functional elements may be combined and may be implemented by combinations of software-configured elements, such as processing elements including digital signal processors (DSPs), and/or other hardware elements.
  • DSPs digital signal processors
  • some elements may include one or more microprocessors, DSPs, field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), radio-frequency integrated circuits (RFICs) and combinations of various hardware and logic circuitry for performing at least the functions described herein.
  • the functional elements of the communication device 300 may refer to one or more processes operating on one or more processing elements.
  • Example 1 may include the method of channel state information (CSI) reporting at the user equipment (UE) for physical downlink shared channel (PDSCH) transmission from two transmission reception points (TRP) wherein the method includes:
  • CSI-RS CSI reference signals
  • Example 2 may include the method of example 1 or some other example herein, wherein TRP corresponds to Next Generation Node B (gNB).
  • Example 3 may include the method of example 1 or some other example herein, wherein a set of CSI components S NCJT corresponds to noncoherent joint transmission (NCJT).
  • NCJT noncoherent joint transmission
  • Example 4 method of example 1 or some other example herein, wherein a set of CSI components S DPB corresponds to dynamic point blanking and/or dynamic point selection (DPB/DPS).
  • DPB dynamic point blanking and/or dynamic point selection
  • Example 5 may include the method of examples 3 and 4 or some other example herein, wherein S NCJT and S DPB corresponds to separate CSI report settings.
  • Example 6 may include the method of examples 3 and 4 or some other example herein, wherein S NCJT and S DPB corresponds to one CSI report settings.
  • Example 7 may include the method of example 6 or some other example herein, wherein S NCJT and S DPB are included in a CSI report corresponding to the CSI reporting setting.
  • Example 8 may include the method of example 6 or some other example herein, wherein S NCJT or S DPB is included in a CSI report corresponding to the CSI reporting setting).
  • Example 9 may include the method of example 3 or some other example herein, wherein S NCJT consists of (RI1, RI2, PMI1, PMI2, CQI NCJT) or (Ml, RI2, PMI1, PMI2, CQI1, CQI2).
  • Example 10 may include the method of example 4 or some other example herein, wherein S DPB consists of (RI DPB, PMI DPB, CQI DPB) or (RIJDPB, PM1_DPB, CQI_DPB, LI_DPB).
  • Example 11 may include the method of example 9 or some other example herein, wherein (LI NCJT) or (LI1, LI2) are additionally included in S NCJT.
  • Example 12 may include the method of examples 5,7, and 8 or some other example herein, wherein CRI is included in a C SI report(s) corresponding to the CSI reporting setting(s).
  • Example 13 may include the method of example 9 or some other example herein, wherein (Ml, RI2, CQI NCJT) or (Ml, RI2, CQI1, CQI2) are reported in CSI part 1; (PMI1, PMI2) or (PMIl, PMI2, LI1, LI2) or (PMI1, PMI2, LI NCJT) are reported in CSI part 2.
  • Example 14 may include the method of example 9 or some other example herein, wherein (Ml, RI2) are reported in CSI part 1; (PMIl, PMI2, CQI NCJT) or (PMIl, PMI2, CQI1, CQI2) or (PMIl, PMI2, CQI1, CQI2, LI1, LI2) or (PMIl, PMI2, CQI_NCJT, LI_NCJT) are reported in CSI part 2.
  • Example 15 may include the method of example 9 or some other example herein, wherein (Ml, RI2, PMIl, PMI2, CQI NCJT) or (Ml, RI2, PMIl, PMI2, CQI1, CQI2) or (Ml, RI2, PMIl, PMI2, CQI_NCJT, LI_NCJT) or (Ml, RI2, PMIl, PMI2, CQI1, CQI2, LI1, LI2) are reported in CSI part 2.
  • Example 16 may include the method of example 9 or some other example herein, wherein if Ml and/or RI2 is/are equal to 0, CSI components corresponding to NCJT in CSI part 2 are not reported by the UE.
  • Example 17 may include the method of example 9 or some other example herein, wherein if CQI NCJT or CQI1 and/or CQI2 is equal to 0, CSI components corresponding to NC-JT in CSI part 2 are not reported by the UE.
  • Example 18 may include the method of example 9 or some other example herein, wherein depending on the exact combination of RI1, RI2, RI DPB/DPS, CSI components corresponding to NC-JT in CSI part 2 are reported by the UE or not reported by the UE.
  • Example 19 may include the method of example 12 or some other example herein, wherein for a pre-defined subset of CRI values, CSI components corresponding to NC-JT in CSI part 2 are not reported by the UE.
  • Example 20 may include the method of example 12, wherein for a pre-defined subset of CRI values, (RI1, CQI1) or (RI1, CQI NCJT) are reported in CSI part 1 and (PMIl, RI2, CQI2, PMI2) or (PMI1, RI2, PMI2) are reported in CSI part 2; and for other subset of CRI values RI DPB, CQI DPB are reported in CSI part 1 and PMI DPB is reported in CSI part 2.
  • Example 21 may include the method of example 12 or some other example herein, wherein for a pre-defined subset of CRI values, (LI1 and LI2or (LI NCJT) are reported in CSI part 2; and for other subset of CRI values LI DPB is reported in CSI part 2.
  • Example 22 may include the method of example 1 or some other example herein, wherein CSI report for NCJT have higher or lower priority comparing to other types of CSI reports.
  • Example 23 may include the method of example 1 or some other example herein, wherein number of CSI processing units (CPU) occupied by a CSI report for NCJT is indicated by the UE as part of UE capability signaling.
  • CPU CSI processing units
  • Example 24 may be a method for implementing a UE, the method comprising: configuring CSI; configuring CSI-RS; receiving one or more signals from TRPl and TRP2, the received one or more signals including CSI-RS; determining a CSI based upon the received signal and CSI configuration; and encoding a signal for transmission based on the determined CSI.
  • Example 25 may include the method of example 24, or of any other example herein, further comprising transmitting the encoded signal.
  • Example 26 may include the method of example 24, or of any other example herein, wherein TRPl and/or TRP2 are at least a part of a gNB.
  • Example 27 may include the method of example 24, or of any other example herein, wherein the CSI includes a set of CSI components S NCJT that correspond to NCJT.
  • Example 28 may include the method of example 27, or of any other example herein, wherein the CSI includes a set of CSI components S DPB that correspond to dynamic point blanking and/or dynamic point selection.
  • Example 29 may include the method of any one of examples 27- 28, or of any other example herein, wherein the set of CSI components S NCJT and the set of CSI components S DPB correspond to separate CSI report settings.
  • Example 30 may include the method of any one of examples 27-
  • Example 31 may include the method of example 30, or of any other example herein, wherein the set of CSI components S NCJT and the set of CSI components S DPB are included in a CSI corresponding to the CSI report setting.
  • Example 32 may include the method of example 27, or of any other example herein, wherein S NCJT includes of a selected one of: (RI1, RI2, PMI1, PMI2, CQI_NCJT) or (Ml, RI2, PMI1, PMI2, CQI1, CQI2).
  • Example 33 may include the method of example 28, or of any other example herein, wherein S DPB includes a selected one of: (RI DPB, PMI_DPB, CQI DPB) or (RI_DPB, PMI_DPB, CQI_DPB, LI_DPB).
  • Example 34 may include the method of example 32, or of any other example herein, wherein a selected one of (LI NCJT) or (LI1, LI2) are included in S NCJT.
  • Example 35 may include the method of example 24, or of any other example herein, wherein the CRI is included in one or more CSI reports corresponding to one or more CSI report settings.
  • Example 36 may include the method of example 27, or of any other example herein, wherein S NCJT includes a selected one of: (RI1, RI2, PMI1, PMI2, CQI NCJT) or (Ml, RI2, PMI1, PMI2, CQI1, CQI2).
  • Example 37 may include the method of example 28, or of any other example herein, wherein S DPB further includes a selected one of: (RIJDPB, PMI_DPB, CQI_DPB) or (RI_DPB, PMI_DPB, CQI_DPB, LI_DPB).
  • Example 38 may include an apparatus comprising means to perform one or more elements of a method described in or related to any of examples 1-37, or any other method or process described herein.
  • Example 39 may include one or more non-transitory computer- readable media comprising instructions to cause an electronic device, upon execution of the instructions by one or more processors of the electronic device, to perform one or more elements of a method described in or related to any of examples 1-37, or any other method or process described herein.
  • Example 40 may include an apparatus comprising logic, modules, or circuitry to perform one or more elements of a method described in or related to any of examples 1-37, or any other method or process described herein.
  • Example 41 may include a method, technique, or process as described in or related to any of examples 1-37, or portions or parts thereof.
  • Example 42 may include an apparatus comprising: one or more processors and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform the method, techniques, or process as described in or related to any of examples 1-37, or portions thereof.
  • Example 43 may include a signal as described in or related to any of examples 1-37, or portions or parts thereof.
  • Example 44 may include a datagram, packet, frame, segment, protocol data unit (PDU), or message as described in or related to any of examples 1-37, or portions or parts thereof, or otherwise described in the present disclosure.
  • Example 45 may include a signal encoded with data as described in or related to any of examples 1-37, or portions or parts thereof, or otherwise described in the present disclosure.
  • Example 46 may include a signal encoded with a datagram, packet, frame, segment, protocol data unit (PDU), or message as described in or related to any of examples 1-37, or portions or parts thereof, or otherwise described in the present disclosure.
  • PDU protocol data unit
  • Example 47 may include an electromagnetic signal carrying computer-readable instructions, wherein execution of the computer-readable instructions by one or more processors is to cause the one or more processors to perform the method, techniques, or process as described in or related to any of examples 1-37, or portions thereof.
  • Example 48 may include a computer program comprising instructions, wherein execution of the program by a processing element is to cause the processing element to cany out the method, techniques, or process as described in or related to any of examples 1-37, or portions thereof.
  • Example 49 may include a signal in a wireless network as shown and described herein.
  • Example 50 may include a method of communicating in a wireless network as shown and described herein.
  • Example 51 may include a system for providing wireless communication as shown and described herein.
  • Example 52 may include a device for providing wireless communication as shown and described herein.

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Abstract

Selon des modes de réalisation, la présente invention concerne un équipement utilisateur (UE) configuré pour fonctionner dans un système de nouvelle radio (NR) de cinquième génération (5G) configuré pour un rapport de rétroaction d'informations d'état de canal (CSI) pour une transmission de canal physique partagé descendant (PDSCH) comprenant une transmission conjointe non cohérente (NCJT) à partir de points de réception de transmission (TRP). L'UE peut décoder/traiter des signaux de référence CSI (CSI-RS) et des ressources pour une mesure d'interférence de CSI (CSI-IM) reçue en provenance d'un premier TRP (TRP1) et d'un second TRP (TRP2) et peut générer des composants CSI correspondant à NCJT et correspondant à une sélection de point dynamique (DPS) et/ou une suppression de point dynamique (DPB) (DPS/DPB). L'UE peut également coder un rapport CSI pour une transmission à un nœud de génération B (gNB) qui peut comprendre une ou plusieurs parties. La ou les parties du rapport CSI peuvent comprendre des composants pour la NCJT et des composants pour la DPS/DPB.
PCT/US2021/071010 2020-08-07 2021-07-27 Rapport csi pour transmission conjointe non cohérente (ncjt) Ceased WO2022032259A1 (fr)

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