[go: up one dir, main page]

WO2025091358A1 - État d'indicateur de configuration de transmission pour de multiples points d'émission et de réception - Google Patents

État d'indicateur de configuration de transmission pour de multiples points d'émission et de réception Download PDF

Info

Publication number
WO2025091358A1
WO2025091358A1 PCT/CN2023/129198 CN2023129198W WO2025091358A1 WO 2025091358 A1 WO2025091358 A1 WO 2025091358A1 CN 2023129198 W CN2023129198 W CN 2023129198W WO 2025091358 A1 WO2025091358 A1 WO 2025091358A1
Authority
WO
WIPO (PCT)
Prior art keywords
tci state
cmr
tci
processors
signals
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2023/129198
Other languages
English (en)
Inventor
Fang Yuan
Yan Zhou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Priority to PCT/CN2023/129198 priority Critical patent/WO2025091358A1/fr
Publication of WO2025091358A1 publication Critical patent/WO2025091358A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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

Definitions

  • aspects of the present disclosure generally relate to wireless communication and specifically relate to techniques, apparatuses, and methods for transmission configuration indicator states for multiple transmit receive points.
  • multiple-access RATs include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single-carrier frequency division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • NR may be designed to better support Internet of things (IoT) and reduced capability device deployments, industrial connectivity, millimeter wave (mmWave) expansion, licensed and unlicensed spectrum access, non-terrestrial network (NTN) deployment, sidelink and other device-to-device direct communication technologies (for example, cellular vehicle-to-everything (CV2X) communication) , massive multiple-input multiple-output (MIMO) , disaggregated network architectures and network topology expansions, multiple-subscriber implementations, high-precision positioning, and/or radio frequency (RF) sensing, among other examples.
  • IoT Internet of things
  • mmWave millimeter wave
  • NTN non-terrestrial network
  • CV2X massive multiple-input multiple-output
  • MIMO massive multiple-input multiple-output
  • disaggregated network architectures and network topology expansions multiple-subscriber implementations
  • RF radio frequency
  • the method may include transmitting an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • the method may include transmitting an indication to activate only the first TCI state.
  • the method may include communicating one or more channels or signals using the first TCI state and a rule.
  • the method may include receiving an RRC configuration for a pool of channel measurement resources (CMRs) associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the method may include receiving an indication to activate a first TCI state.
  • the method may include selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the method may include communicating the first CMR using the first TCI state.
  • the method may include transmitting an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the method may include transmitting an indication to activate a first TCI state.
  • the method may include selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the method may include communicating the first CMR using the first TCI state.
  • the apparatus may include one or more memories and one or more processors coupled to the one or more memories.
  • the one or more processors may be individually or collectively configured to cause the UE to receive an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • the one or more processors may be individually or collectively configured to cause the UE to receive an indication to activate only the first TCI state.
  • the one or more processors may be individually or collectively configured to cause the UE to communicate one or more channels or signals using the first TCI state and a rule.
  • the apparatus may include one or more memories and one or more processors coupled to the one or more memories.
  • the one or more processors may be individually or collectively configured to cause the network entity to transmit an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • the one or more processors may be individually or collectively configured to cause the network entity to transmit an indication to activate only the first TCI state.
  • the one or more processors may be individually or collectively configured to cause the network entity to communicate one or more channels or signals using the first TCI state and a rule.
  • the apparatus may include one or more memories and one or more processors coupled to the one or more memories.
  • the one or more processors may be individually or collectively configured to cause the UE to receive an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the one or more processors may be individually or collectively configured to cause the UE to receive an indication to activate a first TCI state.
  • the one or more processors may be configured to select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the one or more processors may be individually or collectively configured to cause the UE to communicate the first CMR using the first TCI state.
  • the apparatus may include one or more memories and one or more processors coupled to the one or more memories.
  • the one or more processors may be individually or collectively configured to cause the UE to transmit an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the one or more processors may be individually or collectively configured to cause the UE to transmit an indication to activate a first TCI state.
  • the one or more processors may be individually or collectively configured to cause the UE to select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the one or more processors may be configured to communicate the first CMR using the first TCI state.
  • Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to receive an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to receive an indication to activate only the first TCI state.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to communicate one or more channels or signals using the first TCI state and a rule.
  • Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a network entity.
  • the set of instructions when executed by one or more processors of the network entity, may cause the network entity to transmit an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • the set of instructions when executed by one or more processors of the network entity, may cause the network entity to transmit an indication to activate only the first TCI state.
  • the set of instructions when executed by one or more processors of the network entity, may cause the network entity to communicate one or more channels or signals using the first TCI state and a rule.
  • Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to receive an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to receive an indication to activate a first TCI state.
  • the set of instructions, when executed by one or more processors of the UE may cause the UE to select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to communicate the first CMR using the first TCI state.
  • Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to transmit an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to transmit an indication to activate a first TCI state.
  • the set of instructions, when executed by one or more processors of the UE may cause the UE to select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to communicate the first CMR using the first TCI state.
  • the apparatus may include means for receiving an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • the apparatus may include means for receiving an indication to activate only the first TCI state.
  • the apparatus may include means for communicating one or more channels or signals using the first TCI state and a rule.
  • the apparatus may include means for transmitting an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • the apparatus may include means for transmitting an indication to activate only the first TCI state.
  • the apparatus may include means for communicating one or more channels or signals using the first TCI state and a rule.
  • the apparatus may include means for receiving an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the apparatus may include means for receiving an indication to activate a first TCI state.
  • the apparatus may include means for selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the apparatus may include means for communicating the first CMR using the first TCI state.
  • the apparatus may include means for transmitting an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the apparatus may include means for transmitting an indication to activate a first TCI state.
  • the apparatus may include means for selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the apparatus may include means for communicating the first CMR using the first TCI state.
  • aspects of the present disclosure may generally be implemented by or as a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, network node, network entity, wireless communication device, and/or processing system as substantially described with reference to, and as illustrated by, the specification and accompanying drawings.
  • Fig. 1 is a diagram illustrating an example of a wireless communication network in accordance with the present disclosure.
  • Fig. 2 is a diagram illustrating an example network node in communication with an example user equipment (UE) in a wireless network in accordance with the present disclosure.
  • UE user equipment
  • Fig. 3 is a diagram illustrating an example disaggregated base station architecture in accordance with the present disclosure.
  • Fig. 4 illustrates an example logical architecture of a distributed radio access network, in accordance with the present disclosure.
  • Fig. 5 is a diagram illustrating an example of multiple transmit receive point
  • Fig. 6 is a diagram illustrating an example of mTRP operation, in accordance with the present disclosure.
  • Fig. 7 is a diagram illustrating an example of single downlink control information mTRP, in accordance with the present disclosure.
  • Fig. 8 is a diagram illustrating an example associated with selecting transmission configuration indicator states, in accordance with the present disclosure.
  • Fig. 9 is a diagram illustrating an example associated with selecting channel measurement resources, in accordance with the present disclosure.
  • Fig. 10 is a diagram illustrating an example process performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure.
  • Fig. 11 is a diagram illustrating an example process performed, for example, at a network entity or an apparatus of a network entity, in accordance with the present disclosure.
  • Fig. 12 is a diagram illustrating an example process performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure.
  • Fig. 13 is a diagram illustrating an example process performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure.
  • Fig. 14 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure.
  • Fig. 15 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure.
  • a user equipment may communicate with multiple transmit receive points (TRPs) in multiple TRP (mTRP) operation.
  • the UE may use different transmission configuration indicator (TCI) states with the TRPs.
  • TCI state may indicate a directionality or a characteristic of a beam.
  • a network entity may maintain a set of activated TCI states for transmissions.
  • a unified TCI state may be used to indicate beams for a downlink channel or reference signal (RS) and/or an uplink channel or RS.
  • RS downlink channel or reference signal
  • the UE may be prepared to receive downlink control information (DCI) indicating a first unified TCI state and a second unified TCI state.
  • DCI downlink control information
  • the UE may not use appropriate beams to communicate (transmit or receive) the channels and signals. This may result in degraded communications with the multiple TRPs.
  • the UE may be configured to support a specific behavior if only one of the two TCI states is activated.
  • the UE may be configured to apply one of at least two behaviors.
  • the UE may apply the indicated TCI state to all of the channels and signals configured to the UE.
  • the UE may apply the indicated TCI state only to the channels and signals specific to the indicated TCI state.
  • the UE may apply the TCI state with a lowest identifier (ID) among the TCI states that were configured by RRC signaling (among TCI states that do not match or correspond to the indicated TCI state) .
  • ID lowest identifier
  • the UE may apply the proper TCI state to channels and/or signals. As a result, the UE may reduce latency and conserve signaling resources by avoiding degraded communications or beam failure caused by uncertainty in TCI state selection.
  • the UE may be configured to use channel measurement resources (CMRs) , such as reference signals, for communicating channels and/or signals.
  • CMRs channel measurement resources
  • the network entity may transmit an indication to activate only one of the two TCI states (either the first TCI state or the second TCI state) .
  • One TCI state is activated and the other TCI state is not activated.
  • some aspects are described herein as including transmission or reception of an indication to activate only one of multiple TCI states, some aspects may include transmission or reception of other information along with the indication to activate the TCI state.
  • some aspects may apply more generally to the activation of a subset of TCI states from a larger set of multiple TCI states. As such, some aspects may include transmission or reception of an indication to activate two or more TCI states of three TCI states, of four TCI states, etc.
  • the UE may select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the rule may specify that the first TCI state is to be used for multiple CMRs.
  • the rule may specify that the UE is to select the first CMR based at least in part on a CMR ID.
  • another rule may be used and a different TCI state may be used for each CMR.
  • the rule may specify that the UE is to select, as the first CMR, a CMR associated with a TCI state that matches the first TCI state, that the UE is to select, as the second CMR, a CMR associated with a TCI state that matches the second TCI state, and so forth.
  • the UE may use the proper CMR with the indicated TCI state. As a result, the UE may reduce latency and conserve signaling resources by avoiding degraded communications or beam failure caused by uncertainty in CMR selection.
  • 5G New Radio is part of a continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) .
  • 3GPP Third Generation Partnership Project
  • 5G NR supports various technologies and use cases including enhanced mobile broadband (eMBB) , ultra-reliable low-latency communication (URLLC) , massive machine-type communication (mMTC) , millimeter wave (mmWave) technology, beamforming, network slicing, edge computing, Internet of Things (IoT) connectivity and management, and network function virtualization (NFV) .
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low-latency communication
  • mMTC massive machine-type communication
  • mmWave millimeter wave
  • beamforming network slicing
  • edge computing Internet of Things (IoT) connectivity and management
  • NFV network function virtualization
  • Such technological improvements may be associated with new frequency band expansion, licensed and unlicensed spectrum access, overlapping spectrum use, small cell deployments, non-terrestrial network (NTN) deployments, disaggregated network architectures and network topology expansion, device aggregation, advanced duplex communication, sidelink and other device-to-device direct communication, IoT (including passive or ambient IoT) networks, reduced capability (RedCap) UE functionality, industrial connectivity, multiple-subscriber implementations, high-precision positioning, radio frequency (RF) sensing, and/or artificial intelligence or machine learning (AI/ML) , among other examples.
  • NTN non-terrestrial network
  • disaggregated network architectures and network topology expansion device aggregation
  • advanced duplex communication including passive or ambient IoT
  • RedCap reduced capability
  • industrial connectivity multiple-subscriber implementations
  • high-precision positioning radio frequency (RF) sensing
  • AI/ML artificial intelligence or machine learning
  • These technological improvements may support use cases such as wireless backhauls, wireless data centers, extended reality (XR) and metaverse applications, meta services for supporting vehicle connectivity, holographic and mixed reality communication, autonomous and collaborative robots, vehicle platooning and cooperative maneuvering, sensing networks, gesture monitoring, human-brain interfacing, digital twin applications, asset management, and universal coverage applications using non-terrestrial and/or aerial platforms, among other examples.
  • use cases such as wireless backhauls, wireless data centers, extended reality (XR) and metaverse applications, meta services for supporting vehicle connectivity, holographic and mixed reality communication, autonomous and collaborative robots, vehicle platooning and cooperative maneuvering, sensing networks, gesture monitoring, human-brain interfacing, digital twin applications, asset management, and universal coverage applications using non-terrestrial and/or aerial platforms, among other examples.
  • XR extended reality
  • metaverse applications meta services for supporting vehicle connectivity
  • holographic and mixed reality communication autonomous and collaborative robots
  • vehicle platooning and cooperative maneuvering sensing networks
  • gesture monitoring human-bra
  • Fig. 1 is a diagram illustrating an example of a wireless communication network 100 in accordance with the present disclosure.
  • the wireless communication network 100 may be or may include elements of a 5G (or NR) network or a 6G network, among other examples.
  • the wireless communication network 100 may include multiple network nodes 110, shown as a network node (NN) 110a, a network node 110b, a network node 110c, and a network node 110d.
  • the network nodes 110 may support communications with multiple UEs 120, shown as a UE 120a, a UE 120b, a UE 120c, a UE 120d, and a UE 120e.
  • the network nodes 110 and the UEs 120 of the wireless communication network 100 may communicate using the electromagnetic spectrum, which may be subdivided by frequency or wavelength into various classes, bands, carriers, and/or channels. For example, devices of the wireless communication network 100 may communicate using one or more operating bands.
  • multiple wireless networks 100 may be deployed in a given geographic area.
  • Each wireless communication network 100 may support a particular RAT (which may also be referred to as an air interface) and may operate on one or more carrier frequencies in one or more frequency ranges.
  • RATs include a 4G RAT, a 5G/NR RAT, and/or a 6G RAT, among other examples.
  • each RAT in the geographic area may operate on different frequencies to avoid interference with one another.
  • FR1 frequency range designations FR1 (410 MHz through 7.125 GHz) , FR2 (24.25 GHz through 52.6 GHz) , FR3 (7.125 GHz through 24.25 GHz) , FR4a or FR4-1 (52.6 GHz through 71 GHz) , FR4 (52.6 GHz through 114.25 GHz) , and FR5 (114.25 GHz through 300 GHz) .
  • FR1 is often referred to (interchangeably) as a “Sub-6 GHz” band in some documents and articles.
  • FR2 is often referred to (interchangeably) as a “millimeter wave” band in some documents and articles, despite being different than the extremely high frequency (EHF) band (30 GHz through 300 GHz) , which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
  • EHF extremely high frequency
  • ITU International Telecommunications Union
  • the frequencies between FR1 and FR2 are often referred to as mid-band frequencies, which include FR3.
  • Frequency bands falling within FR3 may inherit FR1 characteristics or FR2 characteristics, and thus may effectively extend features of FR1 or FR2 into mid-band frequencies.
  • sub-6 GHz may broadly refer to frequencies that are less than 6 GHz, that are within FR1, and/or that are included in mid-band frequencies.
  • millimeter wave if used herein, may broadly refer to frequencies that are included in mid-band frequencies, that are within FR2, FR4, FR4-a or FR4-1, or FR5, and/or that are within the EHF band.
  • Higher frequency bands may extend 5G NR operation, 6G operation, and/or other RATs beyond 52.6 GHz.
  • each of FR4a, FR4-1, FR4, and FR5 falls within the EHF band.
  • the wireless communication network 100 may implement dynamic spectrum sharing (DSS) , in which multiple RATs (for example, 4G/LTE and 5G/NR) are implemented with dynamic bandwidth allocation (for example, based on user demand) in a single frequency band.
  • DSS dynamic spectrum sharing
  • multiple RATs for example, 4G/LTE and 5G/NR
  • dynamic bandwidth allocation for example, based on user demand
  • a network node 110 may include one or more devices, components, or systems that enable communication between a UE 120 and one or more devices, components, or systems of the wireless communication network 100.
  • a network node 110 may be, may include, or may also be referred to as an NR network node, a 5G network node, a 6G network node, a Node B, an eNB, a gNB, an access point (AP) , a TRP, a mobility element, a core, a network entity, a network element, a network equipment, and/or another type of device, component, or system included in a radio access network (RAN) .
  • RAN radio access network
  • a network node 110 may be implemented as a single physical node (for example, a single physical structure) or may be implemented as two or more physical nodes (for example, two or more distinct physical structures) .
  • a network node 110 may be a device or system that implements part of a radio protocol stack, a device or system that implements a full radio protocol stack (such as a full gNB protocol stack) , or a collection of devices or systems that collectively implement the full radio protocol stack.
  • a network node 110 may be an aggregated network node (having an aggregated architecture) , meaning that the network node 110 may implement a full radio protocol stack that is physically and logically integrated within a single node (for example, a single physical structure) in the wireless communication network 100.
  • an aggregated network node 110 may consist of a single standalone base station or a single TRP that uses a full radio protocol stack to enable or facilitate communication between a UE 120 and a core network of the wireless communication network 100.
  • a network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station) , meaning that the network node 110 may implement a radio protocol stack that is physically distributed and/or logically distributed among two or more nodes in the same geographic location or in different geographic locations.
  • a disaggregated network node may have a disaggregated architecture.
  • disaggregated network nodes 110 may be used in an integrated access and backhaul (IAB) network, in an open radio access network (O-RAN) (such as a network configuration in compliance with the O-RAN Alliance) , or in a virtualized radio access network (vRAN) , also known as a cloud radio access network (C-RAN) , to facilitate scaling by separating base station functionality into multiple units that can be individually deployed.
  • IAB integrated access and backhaul
  • O-RAN open radio access network
  • vRAN virtualized radio access network
  • C-RAN cloud radio access network
  • the network nodes 110 of the wireless communication network 100 may include one or more central units (CUs) , one or more distributed units (DUs) , and/or one or more radio units (RUs) .
  • a CU may host one or more higher layer control functions, such as RRC functions, packet data convergence protocol (PDCP) functions, and/or service data adaptation protocol (SDAP) functions, among other examples.
  • a DU may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and/or one or more higher physical (PHY) layers depending, at least in part, on a functional split, such as a functional split defined by the 3GPP.
  • RLC radio link control
  • MAC medium access control
  • PHY physical
  • a DU also may host one or more lower PHY layer functions, such as a fast Fourier transform (FFT) , an inverse FFT (iFFT) , beamforming, physical random access channel (PRACH) extraction and filtering, and/or scheduling of resources for one or more UEs 120, among other examples.
  • An RU may host RF processing functions or lower PHY layer functions, such as an FFT, an iFFT, beamforming, or PRACH extraction and filtering, among other examples, according to a functional split, such as a lower layer functional split.
  • each RU can be operated to handle over the air (OTA) communication with one or more UEs 120.
  • OTA over the air
  • a single network node 110 may include a combination of one or more CUs, one or more DUs, and/or one or more RUs. Additionally or alternatively, a network node 110 may include one or more Near-Real Time (Near-RT) RAN Intelligent Controllers (RICs) and/or one or more Non-Real Time (Non-RT) RICs.
  • a CU, a DU, and/or an RU may be implemented as a virtual unit, such as a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) , among other examples.
  • a virtual unit may be implemented as a virtual network function, such as associated with a cloud deployment.
  • Some network nodes 110 may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a network node 110 or to a network node 110 itself, depending on the context in which the term is used.
  • a network node 110 may support one or multiple (for example, three) cells.
  • a network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, or another type of cell.
  • a macro cell may cover a relatively large geographic area (for example, several kilometers in radius) and may allow unrestricted access by UEs 120 with service subscriptions.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscriptions.
  • a femto cell may cover a relatively small geographic area (for example, a home) and may allow restricted access by UEs 120 having association with the femto cell (for example, UEs 120 in a closed subscriber group (CSG) ) .
  • a network node 110 for a macro cell may be referred to as a macro network node.
  • a network node 110 for a pico cell may be referred to as a pico network node.
  • a network node 110 for a femto cell may be referred to as a femto network node or an in-home network node.
  • a cell may not necessarily be stationary.
  • the geographic area of the cell may move according to the location of an associated mobile network node 110 (for example, a train, a satellite base station, an unmanned aerial vehicle, or an NTN network node) .
  • an associated mobile network node 110 for example, a train, a satellite base station, an unmanned aerial vehicle, or an NTN network node
  • the wireless communication network 100 may be a heterogeneous network that includes network nodes 110 of different types, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, aggregated network nodes, and/or disaggregated network nodes, among other examples.
  • the network node 110a may be a macro network node for a macro cell 130a
  • the network node 110b may be a pico network node for a pico cell 130b
  • the network node 110c may be a femto network node for a femto cell 130c.
  • network nodes 110 may generally transmit at different power levels, serve different coverage areas, and/or have different impacts on interference in the wireless communication network 100 than other types of network nodes 110.
  • macro network nodes may have a high transmit power level (for example, 5 to 40 watts)
  • pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (for example, 0.1 to 2 watts) .
  • a network node 110 may be, may include, or may operate as an RU, a TRP, or a base station that communicates with one or more UEs 120 via a radio access link (which may be referred to as a “Uu” link) .
  • the radio access link may include a downlink and an uplink.
  • Downlink (or “DL” ) refers to a communication direction from a network node 110 to a UE 120
  • uplink or “UL”
  • Downlink channels may include one or more control channels and one or more data channels.
  • a downlink control channel may be used to transmit DCI (for example, scheduling information, reference signals, and/or configuration information) from a network node 110 to a UE 120.
  • a downlink data channel may be used to transmit downlink data (for example, user data associated with a UE 120) from a network node 110 to a UE 120.
  • Downlink control channels may include one or more physical downlink control channels (PDCCHs)
  • downlink data channels may include one or more physical downlink shared channels (PDSCHs) .
  • Uplink channels may similarly include one or more control channels and one or more data channels.
  • An uplink control channel may be used to transmit uplink control information (UCI) (for example, reference signals and/or feedback corresponding to one or more downlink transmissions) from a UE 120 to a network node 110.
  • UCI uplink control information
  • An uplink data channel may be used to transmit uplink data (for example, user data associated with a UE 120) from a UE 120 to a network node 110.
  • Uplink control channels may include one or more physical uplink control channels (PUCCHs)
  • uplink data channels may include one or more physical uplink shared channels (PUSCHs) .
  • the downlink and the uplink may each include a set of resources on which the network node 110 and the UE 120 may communicate.
  • Downlink and uplink resources may include time domain resources (frames, subframes, slots, and/or symbols) , frequency domain resources (frequency bands, component carriers, subcarriers, resource blocks, and/or resource elements) , and/or spatial domain resources (particular transmit directions and/or beam parameters) .
  • Frequency domain resources of some bands may be subdivided into bandwidth parts (BWPs) .
  • a BWP may be a continuous block of frequency domain resources (for example, a continuous block of resource blocks) that are allocated for one or more UEs 120.
  • a UE 120 may be configured with both an uplink BWP and a downlink BWP (where the uplink BWP and the downlink BWP may be the same BWP or different BWPs) .
  • a BWP may be dynamically configured (for example, by a network node 110 transmitting a DCI configuration to the one or more UEs 120) and/or reconfigured, which means that a BWP can be adjusted in real-time (or near-real-time) based on changing network conditions in the wireless communication network 100 and/or based on the specific requirements of the one or more UEs 120.
  • This enables more efficient use of the available frequency domain resources in the wireless communication network 100 because fewer frequency domain resources may be allocated to a BWP for a UE 120 (which may reduce the quantity of frequency domain resources that a UE 120 is required to monitor) , leaving more frequency domain resources to be spread across multiple UEs 120.
  • BWPs may also assist in the implementation of lower-capability UEs 120 by facilitating the configuration of smaller bandwidths for communication by such UEs 120.
  • the wireless communication network 100 may be, may include, or may be included in, an IAB network.
  • at least one network node 110 is an anchor network node that communicates with a core network.
  • An anchor network node 110 may also be referred to as an IAB donor (or “IAB-donor” ) .
  • the anchor network node 110 may connect to the core network via a wired backhaul link.
  • an Ng interface of the anchor network node 110 may terminate at the core network.
  • an anchor network node 110 may connect to one or more devices of the core network that provide a core access and mobility management function (AMF) .
  • AMF core access and mobility management function
  • An IAB network also generally includes multiple non-anchor network nodes 110, which may also be referred to as relay network nodes or simply as IAB nodes (or “IAB-nodes” ) .
  • Each non-anchor network node 110 may communicate directly with the anchor network node 110 via a wireless backhaul link to access the core network, or may communicate indirectly with the anchor network node 110 via one or more other non-anchor network nodes 110 and associated wireless backhaul links that form a backhaul path to the core network.
  • Some anchor network node 110 or other non-anchor network node 110 may also communicate directly with one or more UEs 120 via wireless access links that carry access traffic.
  • network resources for wireless communication (such as time resources, frequency resources, and/or spatial resources) may be shared between access links and backhaul links.
  • any network node 110 that relays communications may be referred to as a relay network node, a relay station, or simply as a relay.
  • a relay may receive a transmission of a communication from an upstream station (for example, another network node 110 or a UE 120) and transmit the communication to a downstream station (for example, a UE 120 or another network node 110) .
  • the wireless communication network 100 may include or be referred to as a “multi-hop network. ” In the example shown in Fig.
  • the network node 110d may communicate with the network node 110a (for example, a macro network node) and the UE 120d in order to facilitate communication between the network node 110a and the UE 120d.
  • a UE 120 may be or may operate as a relay station that can relay transmissions to or from other UEs 120.
  • a UE 120 that relays communications may be referred to as a UE relay or a relay UE, among other examples.
  • the UEs 120 may be physically dispersed throughout the wireless communication network 100, and each UE 120 may be stationary or mobile.
  • a UE 120 may be, may include, or may be included in an access terminal, another terminal, a mobile station, or a subscriber unit.
  • a UE 120 may be, include, or be coupled with a cellular phone (for example, a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (for example, a smart watch, smart clothing, smart glasses, a smart wristband, and/or smart jewelry, such as a smart ring or a smart bracelet) , an entertainment device (for example, a music device, a video device, and/or a satellite
  • a UE 120 and/or a network node 110 may include one or more chips, system-on-chips (SoCs) , chipsets, packages, or devices that individually or collectively constitute or comprise a processing system.
  • the processing system includes processor (or “processing” ) circuitry in the form of one or multiple processors, microprocessors, processing units (such as central processing units (CPUs) , graphics processing units (GPUs) , neural processing units (NPUs) and/or digital signal processors (DSPs) ) , processing blocks, application-specific integrated circuits (ASIC) , programmable logic devices (PLDs) (such as field programmable gate arrays (FPGAs) ) , or other discrete gate or transistor logic or circuitry (all of which may be generally referred to herein individually as “processors” or collectively as “the processor” or “the processor circuitry” ) .
  • processors or “processing” circuitry in the form of one or multiple processors, microprocessors
  • One or more of the processors may be individually or collectively configurable or configured to perform various functions or operations described herein.
  • a group of processors collectively configurable or configured to perform a set of functions may include a first processor configurable or configured to perform a first function of the set and a second processor configurable or configured to perform a second function of the set, or may include the group of processors all being configured or configurable to perform the set of functions.
  • the processing system may further include memory circuitry in the form of one or more memory devices, memory blocks, memory elements or other discrete gate or transistor logic or circuitry, each of which may include tangible storage media such as random-access memory (RAM) or read-only memory (ROM) , or combinations thereof (all of which may be generally referred to herein individually as “memories” or collectively as “the memory” or “the memory circuitry” ) .
  • RAM random-access memory
  • ROM read-only memory
  • One or more of the memories may be coupled (for example, operatively coupled, communicatively coupled, electronically coupled, or electrically coupled) with one or more of the processors and may individually or collectively store processor-executable code (such as software) that, when executed by one or more of the processors, may configure one or more of the processors to perform various functions or operations described herein. Additionally or alternatively, in some examples, one or more of the processors may be preconfigured to perform various functions or operations described herein without requiring configuration by software.
  • the processing system may further include or be coupled with one or more modems (such as a Wi-Fi (for example, IEEE compliant) modem or a cellular (for example, 3GPP 4G LTE, 5G, or 6G compliant) modem) .
  • modems such as a Wi-Fi (for example, IEEE compliant) modem or a cellular (for example, 3GPP 4G LTE, 5G, or 6G compliant) modem
  • one or more processors of the processing system include or implement one or more of the modems.
  • the processing system may further include or be coupled with multiple radios (collectively “the radio” ) , multiple RF chains, or multiple transceivers, each of which may in turn be coupled with one or more of multiple antennas.
  • one or more processors of the processing system include or implement one or more of the radios, RF chains or transceivers.
  • the UE 120 may include or may be included in a housing that houses components associated with the UE 120 including the processing system.
  • Some UEs 120 may be considered machine-type communication (MTC) UEs, evolved or enhanced machine-type communication (eMTC) , UEs, further enhanced eMTC (feMTC) UEs, or enhanced feMTC (efeMTC) UEs, or further evolutions thereof, all of which may be simply referred to as “MTC UEs” .
  • An MTC UE may be, may include, or may be included in or coupled with a robot, an unmanned aerial vehicle or drone, a remote device, a sensor, a meter, a monitor, and/or a location tag.
  • Some UEs 120 may be considered IoT devices and/or may be implemented as NB-IoT (narrowband IoT) devices.
  • An IoT UE or NB-IoT device may be, may include, or may be included in or coupled with an industrial machine, an appliance, a refrigerator, a doorbell camera device, a home automation device, and/or a light fixture, among other examples.
  • Some UEs 120 may be considered Customer Premises Equipment, which may include telecommunications devices that are installed at a customer location (such as a home or office) to enable access to a service provider's network (such as included in or in communication with the wireless communication network 100) .
  • Some UEs 120 may be classified according to different categories in association with different complexities and/or different capabilities.
  • UEs 120 in a first category may facilitate massive IoT in the wireless communication network 100, and may offer low complexity and/or cost relative to UEs 120 in a second category.
  • UEs 120 in a second category may include mission-critical IoT devices, legacy UEs, baseline UEs, high-tier UEs, advanced UEs, full-capability UEs, and/or premium UEs that are capable of URLLC, eMBB, and/or precise positioning in the wireless communication network 100, among other examples.
  • a third category of UEs 120 may have mid-tier complexity and/or capability (for example, a capability between UEs 120 of the first category and UEs 120 of the second capability) .
  • a UE 120 of the third category may be referred to as a reduced capacity UE ( “RedCap UE” ) , a mid-tier UE, an NR-Light UE, and/or an NR-Lite UE, among other examples.
  • RedCap UEs may bridge a gap between the capability and complexity of NB-IoT devices and/or eMTC UEs, and mission-critical IoT devices and/or premium UEs.
  • RedCap UEs may include, for example, wearable devices, IoT devices, industrial sensors, and/or cameras that are associated with a limited bandwidth, power capacity, and/or transmission range, among other examples.
  • RedCap UEs may support healthcare environments, building automation, electrical distribution, process automation, transport and logistics, and/or smart city deployments, among other examples.
  • two or more UEs 120 may communicate directly with one another using sidelink communications (for example, without communicating by way of a network node 110 as an intermediary) .
  • the UE 120a may directly transmit data, control information, or other signaling as a sidelink communication to the UE 120e. This is in contrast to, for example, the UE 120a first transmitting data in an UL communication to a network node 110, which then transmits the data to the UE 120e in a DL communication.
  • the UEs 120 may transmit and receive sidelink communications using peer-to-peer (P2P) communication protocols, device-to-device (D2D) communication protocols, vehicle-to-everything (V2X) communication protocols (which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, and/or vehicle-to-pedestrian (V2P) protocols) , and/or mesh network communication protocols.
  • a network node 110 may schedule and/or allocate resources for sidelink communications between UEs 120 in the wireless communication network 100.
  • a UE 120 (instead of a network node 110) may perform, or collaborate or negotiate with one or more other UEs to perform, scheduling operations, resource selection operations, and/or other operations for sidelink communications.
  • some of the network nodes 110 and the UEs 120 of the wireless communication network 100 may be configured for full-duplex operation in addition to half-duplex operation.
  • a network node 110 or a UE 120 operating in a half-duplex mode may perform only one of transmission or reception during particular time resources, such as during particular slots, symbols, or other time periods.
  • Half-duplex operation may involve time-division duplexing (TDD) , in which DL transmissions of the network node 110 and UL transmissions of the UE 120 do not occur in the same time resources (that is, the transmissions do not overlap in time) .
  • TDD time-division duplexing
  • a network node 110 or a UE 120 operating in a full-duplex mode can transmit and receive communications concurrently (for example, in the same time resources) .
  • network nodes 110 and/or UEs 120 may generally increase the capacity of the network and the radio access link.
  • full-duplex operation may involve frequency-division duplexing (FDD) , in which DL transmissions of the network node 110 are performed in a first frequency band or on a first component carrier and transmissions of the UE 120 are performed in a second frequency band or on a second component carrier different than the first frequency band or the first component carrier, respectively.
  • FDD frequency-division duplexing
  • full-duplex operation may be enabled for a UE 120 but not for a network node 110.
  • a UE 120 may simultaneously transmit an UL transmission to a first network node 110 and receive a DL transmission from a second network node 110 in the same time resources.
  • full-duplex operation may be enabled for a network node 110 but not for a UE 120.
  • a network node 110 may simultaneously transmit a DL transmission to a first UE 120 and receive an UL transmission from a second UE 120 in the same time resources.
  • full-duplex operation may be enabled for both a network node 110 and a UE 120.
  • the UEs 120 and the network nodes 110 may perform MIMO communication.
  • MIMO generally refers to transmitting or receiving multiple signals (such as multiple layers or multiple data streams) simultaneously over the same time and frequency resources.
  • MIMO techniques generally exploit multipath propagation.
  • MIMO may be implemented using various spatial processing or spatial multiplexing operations.
  • MIMO may support simultaneous transmission to multiple receivers, referred to as multi-user MIMO (MU-MIMO) .
  • MU-MIMO multi-user MIMO
  • Some RATs may employ advanced MIMO techniques, such as multiple TRP (mTRP) operation (including redundant transmission or reception on multiple TRPs) , reciprocity in the time domain or the frequency domain, single-frequency-network (SFN) transmission, or non-coherent joint transmission (NC-JT) .
  • mTRP multiple TRP
  • SFN single-frequency-network
  • NC-JT non-coherent joint transmission
  • a UE may include a communication manager 140.
  • the communication manager 140 may receive a radio resource control (RRC) configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • RRC radio resource control
  • the communication manager 140 may receive an indication to activate only the first TCI state.
  • the communication manager 140 may communicate one or more channels or signals using the first TCI state and a rule.
  • the communication manager 140 may receive an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state; receive an indication to activate a first TCI state; select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule; and communicate the first CMR using the first TCI state.
  • the communication manager 140 may transmit an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state; transmit an indication to activate a first TCI state; select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule; and communicate the first CMR using the first TCI state. Additionally, or alternatively, the communication manager 140 may perform one or more other operations described herein.
  • a network entity may include a communication manager 150.
  • the communication manager 150 may transmit an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state; transmit an indication to activate only the first TCI state.
  • the communication manager 150 may communicate one or more channels or signals using the first TCI state and a rule. Additionally, or alternatively, the communication manager 150 may perform one or more other operations described herein.
  • Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.
  • Fig. 2 is a diagram illustrating an example network node 110 in communication with an example UE 120 in a wireless network in accordance with the present disclosure.
  • the network node 110 may include a data source 212, a transmit processor 214, a transmit (TX) MIMO processor 216, a set of modems 232 (shown as 232a through 232t, where t ⁇ 1) , a set of antennas 234 (shown as 234a through 234v, where v ⁇ 1) , a MIMO detector 236, a receive processor 238, a data sink 239, a controller/processor 240, a memory 242, a communication unit 244, a scheduler 246, and/or a communication manager 150, among other examples.
  • TX transmit
  • one or a combination of the antenna (s) 234, the modem (s) 232, the MIMO detector 236, the receive processor 238, the transmit processor 214, and/or the TX MIMO processor 216 may be included in a transceiver of the network node 110.
  • the transceiver may be under control of and used by one or more processors, such as the controller/processor 240, and in some aspects in conjunction with processor-readable code stored in the memory 242, to perform aspects of the methods, processes, and/or operations described herein.
  • the network node 110 may include one or more interfaces, communication components, and/or other components that facilitate communication with the UE 120 or another network node.
  • processors may refer to one or more controllers and/or one or more processors.
  • processors may include transmit processor 214, TX MIMO processor 216, MIMO detector 236, receive processor 238, and/or controller/processor 240.
  • processors of the UE 120 may include MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, and/or controller/processor 280.
  • a single processor may perform all of the operations described as being performed by the one or more processors.
  • a first set of (one or more) processors of the one or more processors may perform a first operation described as being performed by the one or more processors
  • a second set of (one or more) processors of the one or more processors may perform a second operation described as being performed by the one or more processors.
  • the first set of processors and the second set of processors may be the same set of processors or may be different sets of processors.
  • Reference to “one or more memories” should be understood to refer to any one or more memories of a corresponding device, such as the memory described in connection with Fig. 2. For example, operation described as being performed by one or more memories can be performed by the same subset of the one or more memories or different subsets of the one or more memories.
  • the transmit processor 214 may receive data ( “downlink data” ) intended for the UE 120 (or a set of UEs that includes the UE 120) from the data source 212 (such as a data pipeline or a data queue) .
  • the transmit processor 214 may select one or more MCSs for the UE 120 in accordance with one or more channel quality indicators (CQIs) received from the UE 120.
  • the network node 110 may process the data (for example, including encoding the data) for transmission to the UE 120 on a downlink in accordance with the MCS (s) selected for the UE 120 to generate data symbols.
  • the transmit processor 214 may process system information (for example, semi-static resource partitioning information (SRPI) ) and/or control information (for example, CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and/or control symbols.
  • the transmit processor 214 may generate reference symbols for reference signals (for example, a cell-specific reference signal (CRS) , a demodulation reference signal (DMRS) , or a channel state information (CSI) reference signal (CSI-RS) ) and/or synchronization signals (for example, a primary synchronization signal (PSS) or a secondary synchronization signals (SSS) ) .
  • reference signals for example, a cell-specific reference signal (CRS) , a demodulation reference signal (DMRS) , or a channel state information (CSI) reference signal (CSI-RS)
  • CSI-RS channel state information reference signal
  • synchronization signals for example, a primary synchronization signal (PSS) or a secondary synchronization signals (SSS)
  • the TX MIMO processor 216 may perform spatial processing (for example, precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide a set of output symbol streams (for example, T output symbol streams) to the set of modems 232.
  • each output symbol stream may be provided to a respective modulator component (shown as MOD) of a modem 232.
  • Each modem 232 may use the respective modulator component to process (for example, to modulate) a respective output symbol stream (for example, for orthogonal frequency division multiplexing (OFDM) ) to obtain an output sample stream.
  • OFDM orthogonal frequency division multiplexing
  • Each modem 232 may further use the respective modulator component to process (for example, convert to analog, amplify, filter, and/or upconvert) the output sample stream to obtain a time domain downlink signal.
  • the modems 232a through 232t may together transmit a set of downlink signals (for example, T downlink signals) via the corresponding set of antennas 234.
  • a downlink signal may include a DCI communication, a MAC control element (MAC CE) communication, an RRC communication, a downlink reference signal, or another type of downlink communication.
  • Downlink signals may be transmitted on a PDCCH, a PDSCH, and/or on another downlink channel.
  • a downlink signal may carry one or more transport blocks (TBs) of data.
  • a TB may be a unit of data that is transmitted over an air interface in the wireless communication network 100.
  • a data stream (for example, from the data source 212) may be encoded into multiple TBs for transmission over the air interface. The quantity of TBs used to carry the data associated with a particular data stream may be associated with a TB size common to the multiple TBs.
  • the TB size may be based on or otherwise associated with radio channel conditions of the air interface, the MCS used for encoding the data, the downlink resources allocated for transmitting the data, and/or another parameter.
  • the larger the TB size the greater the amount of data that can be transmitted in a single transmission, which reduces signaling overhead.
  • larger TB sizes may be more prone to transmission and/or reception errors than smaller TB sizes, but such errors may be mitigated by more robust error correction techniques.
  • uplink signals from the UE 120 may be received by an antenna 234, may be processed by a modem 232 (for example, a demodulator component, shown as DEMOD, of a modem 232) , may be detected by the MIMO detector 236 (for example, a receive (Rx) MIMO processor) if applicable, and/or may be further processed by the receive processor 238 to obtain decoded data and/or control information.
  • the receive processor 238 may provide the decoded data to a data sink 239 (which may be a data pipeline, a data queue, and/or another type of data sink) and provide the decoded control information to a processor, such as the controller/processor 240.
  • the network node 110 may use the scheduler 246 to schedule one or more UEs 120 for downlink or uplink communications.
  • the scheduler 246 may use DCI to dynamically schedule DL transmissions to the UE 120 and/or UL transmissions from the UE 120.
  • the scheduler 246 may allocate recurring time domain resources and/or frequency domain resources that the UE 120 may use to transmit and/or receive communications using an RRC configuration (for example, a semi-static configuration) , for example, to perform semi-persistent scheduling (SPS) or to configure a configured grant (CG) for the UE 120.
  • RRC configuration for example, a semi-static configuration
  • SPS semi-persistent scheduling
  • CG configured grant
  • One or more of the transmit processor 214, the TX MIMO processor 216, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, and/or the controller/processor 240 may be included in an RF chain of the network node 110.
  • An RF chain may include one or more filters, mixers, oscillators, amplifiers, analog-to-digital converters (ADCs) , and/or other devices that convert between an analog signal (such as for transmission or reception via an air interface) and a digital signal (such as for processing by one or more processors of the network node 110) .
  • the RF chain may be or may be included in a transceiver of the network node 110.
  • the network node 110 may use the communication unit 244 to communicate with a core network and/or with other network nodes.
  • the communication unit 244 may support wired and/or wireless communication protocols and/or connections, such as Ethernet, optical fiber, common public radio interface (CPRI) , and/or a wired or wireless backhaul, among other examples.
  • the network node 110 may use the communication unit 244 to transmit and/or receive data associated with the UE 120 or to perform network control signaling, among other examples.
  • the communication unit 244 may include a transceiver and/or an interface, such as a network interface.
  • the UE 120 may include a set of antennas 252 (shown as antennas 252a through 252r, where r ⁇ 1) , a set of modems 254 (shown as modems 254a through 254u, where u ⁇ 1) , a MIMO detector 256, a receive processor 258, a data sink 260, a data source 262, a transmit processor 264, a TX MIMO processor 266, a controller/processor 280, a memory 282, and/or a communication manager 140, among other examples.
  • One or more of the components of the UE 120 may be included in a housing 284.
  • one or a combination of the antenna (s) 252, the modem (s) 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, or the TX MIMO processor 266 may be included in a transceiver that is included in the UE 120.
  • the transceiver may be under control of and used by one or more processors, such as the controller/processor 280, and in some aspects in conjunction with processor-readable code stored in the memory 282, to perform aspects of the methods, processes, or operations described herein.
  • the UE 120 may include another interface, another communication component, and/or another component that facilitates communication with the network node 110 and/or another UE 120.
  • the set of antennas 252 may receive the downlink communications or signals from the network node 110 and may provide a set of received downlink signals (for example, R received signals) to the set of modems 254.
  • each received signal may be provided to a respective demodulator component (shown as DEMOD) of a modem 254.
  • DEMOD demodulator component
  • Each modem 254 may use the respective demodulator component to condition (for example, filter, amplify, downconvert, and/or digitize) a received signal to obtain input samples.
  • Each modem 254 may use the respective demodulator component to further demodulate or process the input samples (for example, for OFDM) to obtain received symbols.
  • the MIMO detector 256 may obtain received symbols from the set of modems 254, may perform MIMO detection on the received symbols if applicable, and may provide detected symbols.
  • the receive processor 258 may process (for example, decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260 (which may include a data pipeline, a data queue, and/or an application executed on the UE 120) , and may provide decoded control information and system information to the controller/processor 280.
  • the transmit processor 264 may receive and process data ( “uplink data” ) from a data source 262 (such as a data pipeline, a data queue, and/or an application executed on the UE 120) and control information from the controller/processor 280.
  • the control information may include one or more parameters, feedback, one or more signal measurements, and/or other types of control information.
  • the receive processor 258 and/or the controller/processor 280 may determine, for a received signal (such as received from the network node 110 or another UE) , one or more parameters relating to transmission of the uplink communication.
  • the one or more parameters may include a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, a CQI parameter, or a transmit power control (TPC) parameter, among other examples.
  • the control information may include an indication of the RSRP parameter, the RSSI parameter, the RSRQ parameter, the CQI parameter, the TPC parameter, and/or another parameter.
  • the control information may facilitate parameter selection and/or scheduling for the UE 120 by the network node 110.
  • the transmit processor 264 may generate reference symbols for one or more reference signals, such as an uplink DMRS, an uplink sounding reference signal (SRS) , and/or another type of reference signal.
  • the symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266, if applicable, and further processed by the set of modems 254 (for example, for DFT-s-OFDM or CP-OFDM) .
  • the TX MIMO processor 266 may perform spatial processing (for example, precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide a set of output symbol streams (for example, U output symbol streams) to the set of modems 254.
  • each output symbol stream may be provided to a respective modulator component (shown as MOD) of a modem 254.
  • Each modem 254 may use the respective modulator component to process (for example, to modulate) a respective output symbol stream (for example, for OFDM) to obtain an output sample stream.
  • Each modem 254 may further use the respective modulator component to process (for example, convert to analog, amplify, filter, and/or upconvert) the output sample stream to obtain an uplink signal.
  • the modems 254a through 254u may transmit a set of uplink signals (for example, R uplink signals or U uplink symbols) via the corresponding set of antennas 252.
  • An uplink signal may include a UCI communication, a MAC CE communication, an RRC communication, or another type of uplink communication.
  • Uplink signals may be transmitted on a PUSCH, a PUCCH, and/or another type of uplink channel.
  • An uplink signal may carry one or more TBs of data.
  • Sidelink data and control transmissions may generally use similar techniques as were described for uplink data and control transmission, and may use sidelink-specific channels such as a physical sidelink shared channel (PSSCH) , a physical sidelink control channel (PSCCH) , and/or a physical sidelink feedback channel (PSFCH) .
  • PSSCH physical sidelink shared channel
  • PSCCH physical sidelink control channel
  • PSFCH physical sidelink feedback channel
  • One or more antennas of the set of antennas 252 or the set of antennas 234 may include, or may be included within, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, among other examples.
  • An antenna panel, an antenna group, a set of antenna elements, or an antenna array may include one or more antenna elements (within a single housing or multiple housings) , a set of coplanar antenna elements, a set of non-coplanar antenna elements, or one or more antenna elements coupled with one or more transmission or reception components, such as one or more components of Fig. 2.
  • antenna can refer to one or more antennas, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays.
  • Antenna panel can refer to a group of antennas (such as antenna elements) arranged in an array or panel, which may facilitate beamforming by manipulating parameters of the group of antennas.
  • Antenna module may refer to circuitry including one or more antennas, which may also include one or more other components (such as filters, amplifiers, or processors) associated with integrating the antenna module into a wireless communication device.
  • each of the antenna elements of an antenna 234 or an antenna 252 may include one or more sub-elements for radiating or receiving radio frequency signals.
  • a single antenna element may include a first sub-element cross-polarized with a second sub-element that can be used to independently transmit cross-polarized signals.
  • the antenna elements may include patch antennas, dipole antennas, and/or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern.
  • a spacing between antenna elements may be such that signals with a desired wavelength transmitted separately by the antenna elements may interact or interfere constructively and destructively along various directions (such as to form a desired beam) .
  • the spacing may provide a quarter wavelength, a half wavelength, or another fraction of a wavelength of spacing between neighboring antenna elements to allow for the desired constructive and destructive interference patterns of signals transmitted by the separate antenna elements within that expected range.
  • the amplitudes and/or phases of signals transmitted via antenna elements and/or sub-elements may be modulated and shifted relative to each other (such as by manipulating phase shift, phase offset, and/or amplitude) to generate one or more beams, which is referred to as beamforming.
  • beam may refer to a directional transmission of a wireless signal toward a receiving device or otherwise in a desired direction.
  • Beam may also generally refer to a direction associated with such a directional signal transmission, a set of directional resources associated with the signal transmission (for example, an angle of arrival, a horizontal direction, and/or a vertical direction) , and/or a set of parameters that indicate one or more aspects of a directional signal, a direction associated with the signal, and/or a set of directional resources associated with the signal.
  • antenna elements may be individually selected or deselected for directional transmission of a signal (or signals) by controlling amplitudes of one or more corresponding amplifiers and/or phases of the signal (s) to form one or more beams.
  • Different UEs 120 or network nodes 110 may include different numbers of antenna elements.
  • a UE 120 may include a single antenna element, two antenna elements, four antenna elements, eight antenna elements, or a different number of antenna elements.
  • a network node 110 may include eight antenna elements, 24 antenna elements, 64 antenna elements, 128 antenna elements, or a different number of antenna elements.
  • a larger number of antenna elements may provide increased control over parameters for beam generation relative to a smaller number of antenna elements, whereas a smaller number of antenna elements may be less complex to implement and may use less power than a larger number of antenna elements.
  • Multiple antenna elements may support multiple-layer transmission, in which a first layer of a communication (which may include a first data stream) and a second layer of a communication (which may include a second data stream) are transmitted using the same time and frequency resources with spatial multiplexing.
  • While blocks in Fig. 2 are illustrated as distinct components, the functions described above with respect to the blocks may be implemented in a single hardware, software, or combination component or in various combinations of components.
  • the functions described with respect to the transmit processor 264, the receive processor 258, and/or the TX MIMO processor 266 may be performed by or under the control of the controller/processor 280.
  • Fig. 3 is a diagram illustrating an example disaggregated base station architecture 300 in accordance with the present disclosure.
  • One or more components of the example disaggregated base station architecture 300 may be, may include, or may be included in one or more network nodes (such one or more network nodes 110) .
  • the disaggregated base station architecture 300 may include a CU 310 that can communicate directly with a core network 320 via a backhaul link, or that can communicate indirectly with the core network 320 via one or more disaggregated control units, such as a Non-RT RIC 350 associated with a Service Management and Orchestration (SMO) Framework 360 and/or a Near-RT RIC 370 (for example, via an E2 link) .
  • SMO Service Management and Orchestration
  • the CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via F1 interfaces.
  • Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links.
  • Each of the RUs 340 may communicate with one or more UEs 120 via respective RF access links.
  • a UE 120 may be simultaneously served by multiple RUs 340.
  • Each of the components of the disaggregated base station architecture 300 may include one or more interfaces or may be coupled with one or more interfaces for receiving or transmitting signals, such as data or information, via a wired or wireless transmission medium.
  • the CU 310 may be logically split into one or more CU user plane (CU-UP) units and one or more CU control plane (CU-CP) units.
  • a CU-UP unit may communicate bidirectionally with a CU-CP unit via an interface, such as the E1 interface when implemented in an O-RAN configuration.
  • the CU 310 may be deployed to communicate with one or more DUs 330, as necessary, for network control and signaling.
  • Each DU 330 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 340.
  • a DU 330 may host various layers, such as an RLC layer, a MAC layer, or one or more PHY layers, such as one or more high PHY layers or one or more low PHY layers.
  • Each layer (which also may be referred to as a module) may be implemented with an interface for communicating signals with other layers (and modules) hosted by the DU 330, or for communicating signals with the control functions hosted by the CU 310.
  • Each RU 340 may implement lower layer functionality. In some aspects, real-time and non-real-time aspects of control and user plane communication with the RU (s) 340 may be controlled by the corresponding DU 330.
  • the SMO Framework 360 may support RAN deployment and provisioning of non-virtualized and virtualized network elements.
  • the SMO Framework 360 may support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operations and maintenance interface, such as an O1 interface.
  • the SMO Framework 360 may interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface, such as an O2 interface.
  • a cloud computing platform such as an open cloud (O-Cloud) platform 390
  • network element life cycle management such as to instantiate virtualized network elements
  • a virtualized network element may include, but is not limited to, a CU 310, a DU 330, an RU 340, a non-RT RIC 350, and/or a Near-RT RIC 370.
  • the SMO Framework 360 may communicate with a hardware aspect of a 4G RAN, a 5G NR RAN, and/or a 6G RAN, such as an open eNB (O-eNB) 380, via an O1 interface. Additionally or alternatively, the SMO Framework 360 may communicate directly with each of one or more RUs 340 via a respective O1 interface. In some deployments, this configuration can enable each DU 330 and the CU 310 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
  • the Non-RT RIC 350 may include or may implement a logical function that enables non-real-time control and optimization of RAN elements and resources, AI/ML workflows including model training and updates, and/or policy-based guidance of applications and/or features in the Near-RT RIC 370.
  • the Non-RT RIC 350 may be coupled to or may communicate with (such as via an A1 interface) the Near-RT RIC 370.
  • the Near-RT RIC 370 may include or may implement a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions via an interface (such as via an E2 interface) connecting one or more CUs 310, one or more DUs 330, and/or an O-eNB with the Near-RT RIC 370.
  • the Non-RT RIC 350 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 370 and may be received at the SMO Framework 360 or the Non-RT RIC 350 from non-network data sources or from network functions. In some examples, the Non-RT RIC 350 or the Near-RT RIC 370 may tune RAN behavior or performance. For example, the Non-RT RIC 350 may monitor long-term trends and patterns for performance and may employ AI/ML models to perform corrective actions via the SMO Framework 360 (such as reconfiguration via an O1 interface) or via creation of RAN management policies (such as A1 interface policies) .
  • SMO Framework 360 such as reconfiguration via an O1 interface
  • RAN management policies such as A1 interface policies
  • Fig. 3 is provided as an example. Other examples may differ from what is described with regard to Fig. 3.
  • the network node 110, the controller/processor 240 of the network node 110, the UE 120, the controller/processor 280 of the UE 120, the CU 310, the DU 330, the RU 340, or any other component (s) of Figs. 1, 2, or 3 may implement one or more techniques or perform one or more operations associated with TCI states for multiple TRPs, as described in more detail elsewhere herein.
  • the controller/processor 240 of the network node 110, the controller/processor 280 of the UE 120, any other component (s) of Fig. 2, the CU 310, the DU 330, or the RU 340 may perform or direct operations of, for example, process 1000 of Fig. 10, process 1100 of Fig.
  • the memory 242 may store data and program codes for the network node 110, the network node 110, the CU 310, the DU 330, or the RU 340.
  • the memory 282 may store data and program codes for the UE 120.
  • the memory 242 or the memory 282 may include a non-transitory computer-readable medium storing a set of instructions (for example, code or program code) for wireless communication.
  • the memory 242 may include one or more memories, such as a single memory or multiple different memories (of the same type or of different types) .
  • the memory 282 may include one or more memories, such as a single memory or multiple different memories (of the same type or of different types) .
  • the set of instructions when executed (for example, directly, or after compiling, converting, or interpreting) by one or more processors of the network node 110, the UE 120, the CU 310, the DU 330, or the RU 340, may cause the one or more processors to perform process 1000 of Fig. 10, process 1100 of Fig. 11, process 1200 of Fig. 12, process 1300 of Fig. 13, or other processes as described herein.
  • executing instructions may include running the instructions, converting the instructions, compiling the instructions, and/or interpreting the instructions, among other examples.
  • a UE (e.g., a UE 120) includes means for receiving an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state; means for receiving an indication to activate only the first TCI state; and/or means for communicating one or more channels or signals using the first TCI state and a rule.
  • the UE includes means for receiving an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state; means for receiving an indication to activate a first TCI state; means for selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule; and/or means for communicating the first CMR using the first TCI state.
  • the UE includes means for transmitting an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state; means for transmitting an indication to activate a first TCI state; means for selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule; and/or means for communicating the first CMR using the first TCI state.
  • the means for the UE to perform operations described herein may include, for example, one or more of communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller/processor 280, or memory 282.
  • the network entity includes means for transmitting an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state; means for transmitting an indication to activate only the first TCI state; and/or means for communicating one or more channels or signals using the first TCI state and a rule.
  • the means for the network entity to perform operations described herein may include, for example, one or more of communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.
  • Fig. 4 illustrates an example logical architecture of a distributed RAN 400, in accordance with the present disclosure.
  • a 5G access node 405 may include an access node controller 410.
  • the access node controller 410 may be a CU of the distributed RAN 400.
  • a backhaul interface to a 5G core network 415 may terminate at the access node controller 410.
  • the 5G core network 415 may include a 5G control plane component 420 and a 5G user plane component 425 (e.g., a 5G gateway) , and the backhaul interface for one or both of the 5G control plane and the 5G user plane may terminate at the access node controller 410.
  • a backhaul interface to one or more neighbor access nodes 430 e.g., another 5G access node 405 and/or an LTE access node
  • the access node controller 410 may include and/or may communicate with one or more TRPs 435 (e.g., via an F1 Control (F1-C) interface and/or an F1 User (F1-U) interface) .
  • a TRP 435 may include a DU and/or an RU of the distributed RAN 400.
  • a TRP 435 may correspond to a network node 110 described above in connection with Fig. 1.
  • different TRPs 435 may be included in different network nodes 110.
  • multiple TRPs 435 may be included in a single network node 110.
  • a network node 110 may include a CU (e.g., access node controller 410) and/or one or more DUs (e.g., one or more TRPs 435) .
  • a TRP 435 may be referred to as a cell, a panel, an antenna array, or an array.
  • a TRP 435 may be connected to a single access node controller 410 or to multiple access node controllers 410.
  • a dynamic configuration of split logical functions may be present within the architecture of distributed RAN 400, referred to elsewhere herein as a functional split.
  • a PDCP layer, an RLC layer, and/or a MAC layer may be configured to terminate at the access node controller 410 or at a TRP 435.
  • multiple TRPs 435 may transmit communications (e.g., the same communication or different communications) in the same transmission time interval (TTI) (e.g., a slot, a mini-slot, a subframe, or a symbol) or different TTIs using different quasi co-location (QCL) relationships (e.g., different spatial parameters, different TCI states, different precoding parameters, and/or different beamforming parameters) .
  • TTI transmission time interval
  • QCL quasi co-location
  • a TCI state may be used to indicate one or more QCL relationships.
  • a TRP 435 may be configured to individually (e.g., using dynamic selection) or jointly (e.g., using joint transmission with one or more other TRPs 435) serve traffic to a UE 120.
  • a downlink beam such as a transmit beam or a UE receive beam, may be associated with a TCI state.
  • a TCI state may indicate a directionality or a characteristic of the downlink beam, such as one or more QCL properties of the downlink beam.
  • a QCL property may include, for example, a Doppler shift, a Doppler spread, an average delay, a delay spread, or spatial receive parameters, among other examples.
  • each transmit beam may be associated with a synchronization signal block (SSB) , and the UE 120 may indicate a preferred transmit beam by transmitting uplink transmissions in resources of the SSB that are associated with the preferred transmit beam.
  • a particular SSB may have an associated TCI state (for example, for an antenna port or for beamforming) .
  • the network node 110 may, in some examples, indicate a downlink transmit beam based at least in part on antenna port QCL properties that may be indicated by the TCI state.
  • a TCI state may be associated with one downlink reference signal set (for example, an SSB and an aperiodic, periodic, or semi-persistent CSI-RS) for different QCL types (for example, QCL types for different combinations of Doppler shift, Doppler spread, average delay, delay spread, or spatial receive parameters, among other examples) .
  • the QCL type indicates spatial receive parameters
  • the QCL type may correspond to analog receive beamforming parameters of a UE receive beam at the UE 120.
  • the network node 110 may maintain a set of activated TCI states for downlink shared channel transmissions and a set of activated TCI states for downlink control channel transmissions.
  • the set of activated TCI states for downlink shared channel transmissions may correspond to beams that the network node 110 uses for downlink transmission on a PDSCH.
  • the set of activated TCI states for downlink control channel communications may correspond to beams that the network node 110 may use for downlink transmission on a PDCCH or in a control resource set (CORESET) .
  • the UE 120 may also maintain a set of activated TCI states for receiving the downlink shared channel transmissions and the CORESET transmissions.
  • the UE 120 may have one or more antenna configurations based at least in part on the TCI state, and the UE 120 may not need to reconfigure antennas or antenna weighting configurations.
  • the set of activated TCI states for example, activated PDSCH TCI states and activated CORESET TCI states
  • the UE 120 may be configured by a configuration message, such as an RRC message.
  • the UE 120 may transmit in the direction of the network node 110 using a directional UE transmit beam, and the network node 110 may receive the transmission using a directional receive beam.
  • Each UE transmit beam may have an associated beam ID, beam direction, or beam symbols, among other examples.
  • the UE 120 may transmit uplink communications via one or more UE transmit beams.
  • 3GPP standards Release 17 established a unified TCI state framework in which a TCI state may be used to indicate more than one beam.
  • the TCI state may be used to indicate beams for a downlink channel or RS and/or an uplink channel or RS.
  • a joint TCI state may indicate a common beam for at least one downlink channel or RS and at least one uplink channel or RS.
  • This may be Type 1 and may include at least a UE-specific PDCCH, PDSCH, PUCCH, and PUSCH.
  • a downlink TCI state may indicate a common beam for more than one downlink channel or RS.
  • This may be Type 2 and may include at least a UE-specific PDCCH and PDSCH.
  • An uplink TCI state may indicate a common beam for more than one uplink channel or RS. This may be Type 3 and may include at least a UE-specific PUCCH and PUSCH.
  • Other types of unified TCI states may include a separate downlink single channel or RS TCI state that indicates a beam for a single downlink channel or RS, a separate uplink single channel or RS TCI state that indicates a beam for a single uplink channel or RS, or an uplink spatial relation information, such as a spatial relation indicator (SRI) , that indicates a beam for a single uplink channel or RS.
  • SRI spatial relation indicator
  • a network entity may transmit a unified TCI state indication that indicates a unified TCI state.
  • the unified TCI state indication may provide, for a downlink or a joint TCI state, QCL-Type1 (e.g., for QCL-Type A) and QCL-Type2 (e.g., for QCL-Type D) .
  • the unified TCI state indication may also provide, for a downlink or a joint TCI state, power control parameters, such as a P0 value, an alpha value, or cross-link interference (CLI) information.
  • the unified TCI state indication may indicate a path loss RS.
  • the unified TCI state indication may indicate an RS (e.g., for a spatial filter) and/or power control parameters.
  • the UE may apply an indicated joint/downlink TCI state specific to a CORESET pool index (e.g., coresetPoolIndex) value to a PDCCH on a CORESET that is associated with the same coresetPoolIndex value.
  • the UE may apply the indicated joint/downlink TCI state specific to a coresetPoolIndex value to a PDSCH scheduled or activated by the PDCCH on a CORESET that is associated with the same coresetPoolIndex value.
  • the UE may use an RRC configuration to apply a first TCI state, a second TCI state, both, or none of the joint/downlink TCI states indicated by DCI or a MAC CE to a CORESET or a group of CORESETs (if CORESET group configuration is supported) .
  • Fig. 4 is provided as an example. Other examples may differ from what was described with regard to Fig. 4.
  • Fig. 5 is a diagram illustrating an example 500 of mTRP communication (sometimes referred to as multi-panel communication) , in accordance with the present disclosure. As shown in Fig. 5, multiple TRPs 505 may communicate with the same UE 120. A TRP 505 may correspond to a TRP 435 described above in connection with Fig. 4.
  • the multiple TRPs may communicate with the same UE 120 in a coordinated manner (e.g., using coordinated multipoint transmissions) to improve reliability and/or increase throughput.
  • the TRP 505A and TRP 505B may coordinate such communications via an interface between the TRP 505A and TRP 505B (e.g., a backhaul interface and/or an access node controller 410) .
  • the interface may have a smaller delay and/or higher capacity when the TRP 505A and TRP 505B are co-located at the same network node 110 (e.g., when the TRP 505A and TRP 505B are different antenna arrays or panels of the same network node 110) , and may have a larger delay and/or lower capacity (as compared to co-location) when the TRP 505A and TRP 505B are located at different network nodes 110.
  • the different TRPs 505A and 505B may communicate with the UE 120 using different QCL relationships (e.g., different TCI states) , different DMRS ports, and/or different layers (e.g., of a multi-layer communication) .
  • a single PDCCH may be used to schedule downlink data communications for a single PDSCH.
  • multiple TRPs e.g., TRP 505A and TRP 505B
  • TRP 505A and TRP 505B may transmit communications to the UE 120 on the same PDSCH.
  • a communication may be transmitted using a single codeword with different spatial layers for different TRPs (e.g., where one codeword maps to a first set of layers transmitted by a first TRP 505A and maps to a second set of layers transmitted by a second TRP 505B) .
  • a communication may be transmitted using multiple codewords, where different codewords are transmitted by different TRPs (e.g., using different sets of layers) .
  • different TRPs may use different QCL relationships (e.g., different TCI states) for different DMRS ports corresponding to different layers.
  • a first TRP 505A may use a first QCL relationship or a first TCI state for a first set of DMRS ports corresponding to a first set of layers
  • a second TRP 505B may use a second (different) QCL relationship or a second (different) TCI state for a second (different) set of DMRS ports corresponding to a second (different) set of layers.
  • a TCI state in DCI may indicate the first QCL relationship (e.g., by indicating a first TCI state) and the second QCL relationship (e.g., by indicating a second TCI state) .
  • the first and the second TCI states may be indicated using a TCI field in the DCI.
  • the TCI field can indicate a single TCI state (for single-TRP transmission) or multiple TCI states (for multi-TRP transmission as discussed here) in this multi-TRP transmission mode (e.g., Mode 1) .
  • a second mTRP transmission mode (e.g., Mode 2)
  • multiple PDCCHs may be used to schedule downlink data communications for multiple corresponding PDSCHs (e.g., one PDCCH for each PDSCH) .
  • TRP 505A and TRP 505B may schedule downlink date communications on the same PDSCH, or TRP 505A and TRP 505B may schedule downlink data communications on different PDSCHs.
  • a first PDCCH may schedule a first codeword to be transmitted by a first TRP 505A
  • a second PDCCH may schedule a second codeword to be transmitted by a second TRP 505A.
  • first DCI (e.g., transmitted by the first TRP 505A) may schedule a first PDSCH communication associated with a first set of DMRS ports with a first QCL relationship (e.g., indicated by a first TCI state) for the first TRP 505A
  • second DCI (e.g., transmitted by the second TRP 505B) may schedule a second PDSCH communication associated with a second set of DMRS ports with a second QCL relationship (e.g., indicated by a second TCI state) for the second TRP 505B.
  • DCI (e.g., having DCI format 1_0 or DCI format 1_1) may indicate a corresponding TCI state for a TRP corresponding to the DCI.
  • the TCI field of a DCI indicates the corresponding TCI state (e.g., the TCI field of the first DCI indicates the first TCI state and the TCI field of the second DCI indicates the second TCI state) .
  • Fig. 5 is provided as an example. Other examples may differ from what is described with respect to Fig. 5.
  • Fig. 6 is a diagram illustrating an example 600 of mTRP operation, in accordance with the present disclosure.
  • Example 600 shows, at 602, an sDCI for mTRP PDSCH or PUSCH communication.
  • the sDCI may include spatial division multiplexing (SDM) (shown at 604) , frequency division multiplexing (FDM) (shown at 606) , or time division multiplexing (TDM) (shown at 608) .
  • PDCCH 610 is shown in black, and PDSCH 612 is shown in white.
  • Example 600 shows, at 626, that with multiple TRPs (e.g., TRP 505A and TRP 505B) , the TRPs may use TDM cyclic mapping or TDM sequential mapping.
  • Example 600 also shows, at 614, that a multiple DCI (mDCI) for mTRP PDSCH or PUSCH may include DMRSs 616 for SDM.
  • mDCI multiple DCI
  • Example 600 shows, at 622, that TDM can be used for PUCCH or PUSCH repetition.
  • PUCCH 618 is shown in black
  • PUSCH 620 is shown in white.
  • Example 600 also shows, at 624, that an SFN may use SDM for PDSCH 612 and/or PDCCH 610.
  • Coherent joint transmission may be used for PDSCH, where multiple TRPs transmit PDSCH communications coherently across different antennas of TRPs.
  • CJT involves multiple transmitters that each transmit a message with a phase that is constructively combined at a receiver.
  • CJT may include beamforming with antennas that are not co-located and that correspond to different TRPs.
  • CJT may improve the signal power and spatial diversity of communications in an NR network.
  • data is precoded jointly on different TRPs.
  • Fig. 6 is provided as an example. Other examples may differ from what is described with regard to Fig. 6.
  • Fig. 7 is a diagram illustrating an example 700 of sDCI mTRP, in accordance with the present disclosure.
  • Example 700 illustrates a DCI 702 indicating two unified TCI states in a TCI field.
  • a unified TCI framework extension for sDCI-based mTRP may include a 2-bit TCI selection field configured by RRC to be present in a DCI format 1_1/1_2, at 704, that schedules or activates PDSCH reception 706 (including dynamic PDSCH and SPS PDSCH) .
  • the UE may apply the first one of two indicated joint/DL TCI states to all PDSCH DMRS port (s) of corresponding PDSCH transmission occasions (s) scheduled or activated by the DCI format 1_1/1_2. If the DCI format 1_1/1_2 indicates codepoint "01" for the TCI selection field, the UE may apply the second one of two indicated joint/DL TCI states to all PDSCH DMRS port (s) of corresponding PDSCH transmission occasions (s) scheduled or activated by the DCI format 1_1/1_2.
  • the UE may apply both indicated joint/DL TCI states to the PDSCH reception scheduled/activated by the DCI format 1_1/1_2.
  • the UE may be prepared to receive DCI indicating a first unified TCI state and a second unified TCI state. However, if the UE receives only one of the two TCI states, it is not clear what TCI state the UE is to apply to the channel and signals. Without information as to what TCI state to apply, the UE may not use appropriate beams to communicate (transmit or receive) the channels and signals. This may result in degraded communications or less optimal CJT transmissions from multiple TRPs.
  • Fig. 7 is provided as an example. Other examples may differ from what is described with regard to Fig. 7.
  • Fig. 8 is a diagram illustrating an example 800 associated with selecting TCI states, in accordance with the present disclosure.
  • a network entity 810 e.g., a network node 110
  • a UE 820 e.g., UE 120
  • the network entity 810 may control multiple TRPs.
  • the network entity 810 may transmit an RRC configuration for multiple TCI states associated with mTRP operation.
  • the multiple TCI states may include, for example, a first TCI state and a second TCI state.
  • the UE 820 may be expected to receive an activation of both the first TCI state and the second TCI state.
  • the network entity 810 may transmit an indication to activate only one of the two TCI states (either the first TCI state or the second TCI state) . In example 800, the network entity 810 may activate the first TCI state and not the second TCI state.
  • the UE 820 may be configured to support a specific behavior if only one of the two TCI states is activated.
  • the behavior may be after an initial access, after an RRC reconfiguration with synchronization, or after receiving a TCI activation MAC CE.
  • the behavior may be before the UE 820 receives an indication of the other TCI state or receives an indication of both the first and second TCI states.
  • the UE 820 may be configured to apply one of at least two behaviors.
  • a behavior may include performing an action according to a configured rule.
  • the UE 820 may apply the indicated TCI state (e.g., the first TCI state in example 800) to all of the channels and signals configured to the UE. This may include applying the indicated TCI state to the channels and signals specific to both the first and the second indicated TCI states. Applying a TCI state may include tuning an antenna array and beamforming according to the TCI state, in preparation for communication (transmission and/or reception) of channels and signals using a beam associated with the TCI state.
  • the indicated TCI state e.g., the first TCI state in example 800
  • Applying a TCI state may include tuning an antenna array and beamforming according to the TCI state, in preparation for communication (transmission and/or reception) of channels and signals using a beam associated with the TCI state.
  • the UE 820 may apply the indicated TCI state only to the channels and signals specific to the indicated TCI state. For the channels and signals not specific to the indicated TCI state, the UE 820 may apply the TCI state with a lowest ID among the TCI states that were configured by RRC signaling (among TCI states that do not match or correspond to the indicated TCI state) .
  • the network entity 810 may also apply the same behavior to use the same TCI state (or corresponding TCI state) used by the UE 820.
  • the UE 820 may communicate (transmit and/or receive) the channels and/or signals using the first TCI state and the applicable rule (first rule or second rule) . This may include using the first TCI state for the channels and signals for which the indicated TCI state applies, depending on which rule is used.
  • the UE 820 may apply the proper TCI state to channels and/or signals. As a result, the UE 820 may reduce latency and conserve signaling resources by avoiding degraded communications or beam failure caused by uncertainty in TCI state selection.
  • Fig. 8 is provided as an example. Other examples may differ from what is described with respect to Fig. 8.
  • Fig. 9 is a diagram illustrating an example 900 associated with selecting CMRs states, in accordance with the present disclosure.
  • the UE 820 may be configured to use CMRs for communicating channels and/or signals.
  • the network entity 810 may transmit an RRC configuration for a pool of CMRs associated with mTRP operation.
  • Each CMR may be associated with a TCI state.
  • the pool of CMRs may be a common pool of CMR resources (common to multiple UEs) , where each CMR is associated with different configured TCI states.
  • the network entity 810 may transmit an indication to activate only one of the two TCI states (either the first TCI state or the second TCI state) .
  • the network entity 810 may activate the first TCI state and not the second TCI state.
  • the UE 820 may select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the rule may specify that the first TCI state is to be used for multiple CMRs. For example, the UE 820 may select CMR1 with the first TCI state or CMR2 with the first TCI state. The UE 820 may select CMR3 with the second TCI state (if indicated) or CMR4 with the second TCI state.
  • the rule may specify that the UE 820 is to select the first CMR based at least in part on a CMR ID.
  • the rule may specify that the UE 820 is to select, as the first CMR, a CMR having a lowest CMR ID of CMRs that are associated with a TCI state that matches the first TCI state. Accordingly, the UE 820 may select the first CMR having the lowest CMR ID.
  • the rule may further specify that the UE 820 is to select, as a second CMR, a CMR having a second lowest CMR ID of the CMRs that are associated with the TCI state that matches the first TCI state. Accordingly, the UE 820 may select the second CMR, the CMR having the second lowest CMR ID.
  • the first actually used CMR may be expected to match the first indicated TCI (e.g., first TCI state) .
  • the first used CMR is selected as the lowest CMR resource ID whose configured TCI state matches the first indicated TCI state (e.g., CMR1) .
  • the second actually used CMR may be expected to match the first indicated TCI state.
  • the second used CMR may be selected as the second lowest CMR resource ID whose configured TCI state matching the first indicated TCI state, if any (e.g., CMR2) .
  • the same rule may be used for the third and fourth CMR selection, if any.
  • the network entity 810 may also select the first CMR from the pool of CMRs based at least in part on the first TCI state and the rule.
  • the UE 820 may communicate the first CMR using the first TCI state. For example, the UE 820 may transmit the first CMR using the first TCI state or receive the first CMR using the first TCI state.
  • another rule may be used.
  • a different TCI state may be used for each CMR.
  • the rule may specify that the UE 820 is to select, as the first CMR, a CMR associated with a TCI state that matches the first TCI state, that the UE 820 is to select, as the second CMR, a CMR associated with a TCI state that matches the second TCI state, and so forth.
  • the UE 820 may select CMR1 with TCI state ID1 (with second indicated TCI state) , CMR2 with TCI state ID2 (with first indicated TCI state) , CMR3 with TCI state ID3 (with second indicated TCI state) , and CMR4 with TCI state ID4 (with second indicated TCI state. )
  • the first used CMR may be expected to match the first indicated TCI state (TCI ID2) .
  • the first used CMR may be selected as the unique CMR resource ID whose configured TCI state matches the first indicated TCI state in the CMR resource pool dedicated to the first used CMR (e.g., CMR2) .
  • the network entity 810 may transmit an indication to activate the other TCI state (e.g., second TCI state in example 900) .
  • the UE 820 may select, as the second CMR, the CMR associated with the TCI state that matches the second TCI state.
  • the UE 820 may communicate the second CMR using the second TCI state (may use both the first TCI state and the second TCI state) .
  • the UE 820 may transmit the second CMR using the second TCI state or receive the second CMR using the second TCI state.
  • the UE 820 may use the proper CMR with the indicated TCI state. As a result, the UE 820 may reduce latency and conserve signaling resources by avoiding degraded communications or beam failure caused by uncertainty in CMR selection.
  • Fig. 9 is provided as an example. Other examples may differ from what is described with regard to Fig. 9.
  • Fig. 10 is a diagram illustrating an example process 1000 performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure.
  • Example process 1000 is an example where the apparatus or the UE (e.g., UE 120, UE 820) performs operations associated with selecting TCI states for mTRP.
  • the apparatus or the UE e.g., UE 120, UE 820
  • process 1000 may include receiving an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state (block 1010) .
  • the UE e.g., using reception component 1402 and/or communication manager 1406, depicted in Fig. 14
  • process 1000 may include receiving an indication to activate only the first TCI state (block 1020) .
  • the UE e.g., using reception component 1402 and/or communication manager 1406, depicted in Fig. 14
  • process 1000 may include communicating one or more channels or signals using the first TCI state and a rule (block 1030) .
  • the UE e.g., using reception component 1402, transmission component 1404, and/or communication manager 1406, depicted in Fig. 14
  • Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the rule specifies that the first TCI state is to apply to all channels and signals that are specific to at least the first TCI state and the second TCI state.
  • the rule specifies that the first TCI state is to apply only to channels or signals specific to the first TCI state.
  • the rule specifies that a TCI state having a lowest TCI state ID of TCI state IDs of the multiple TCI states is to be applied to channels or signals that are not specific to the first TCI state.
  • communicating the one or more channels or signals includes communicating the one or more channels or signals using the first TCI state before receiving an indication to activate the second TCI state.
  • communicating the one or more channels or signals includes communicating the one or more channels or signals after an initial access.
  • communicating the one or more channels or signals includes communicating the one or more channels or signals after an RRC reconfiguration with synchronization.
  • communicating the one or more channels or signals includes communicating the one or more channels or signals after receiving a TCI activation MAC CE.
  • process 1000 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 10. Additionally, or alternatively, two or more of the blocks of process 1000 may be performed in parallel.
  • Fig. 11 is a diagram illustrating an example process 1100 performed, for example, at a network entity or an apparatus of a network entity, in accordance with the present disclosure.
  • Example process 1100 is an example where the apparatus or the network entity (e.g., network node 110, network entity 810) performs operations associated with selecting TCI states for mTRP.
  • the apparatus or the network entity e.g., network node 110, network entity 810 performs operations associated with selecting TCI states for mTRP.
  • process 1100 may include transmitting an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state (block 1110) .
  • the network entity e.g., using transmission component 1504 and/or communication manager 1506, depicted in Fig. 15
  • process 1100 may include transmitting an indication to activate only the first TCI state (block 1120) .
  • the network entity e.g., using transmission component 1504 and/or communication manager 1506, depicted in Fig. 15
  • process 1100 may include communicating one or more channels or signals using the first TCI state and a rule (block 1130) .
  • the network entity e.g., using reception component 1502, transmission component 1504, and/or communication manager 1506, depicted in Fig. 15
  • Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the rule specifies that the first TCI state is to apply to all channels and signals that are specific to at least the first TCI state and the second TCI state.
  • the rule specifies that the first TCI state is to apply only to channels or signals specific to the first TCI state.
  • the rule specifies that a TCI state having a lowest TCI state ID of TCI state IDs of the multiple TCI states is to be applied to channels or signals that are not specific to the first TCI state.
  • communicating the one or more channels or signals includes communicating the one or more channels or signals using the first TCI state before transmitting an indication to activate the second TCI state.
  • process 1100 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 11. Additionally, or alternatively, two or more of the blocks of process 1100 may be performed in parallel.
  • Fig. 12 is a diagram illustrating an example process 1200 performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure.
  • Example process 1200 is an example where the apparatus or the UE (e.g., UE 120, UE 820) performs operations associated with selecting CMRs for mTRP.
  • the apparatus or the UE e.g., UE 120, UE 820
  • process 1200 may include receiving an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state (block 1210) .
  • the UE e.g., using reception component 1402 and/or communication manager 1406, depicted in Fig. 14
  • process 1200 may include receiving an indication to activate a first TCI state (block 1220) .
  • the UE e.g., using reception component 1402 and/or communication manager 1406, depicted in Fig. 14
  • process 1200 may include selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule (block 1230) .
  • the UE e.g., using communication manager 1406, depicted in Fig. 14
  • process 1200 may include communicating the first CMR using the first TCI state (block 1240) .
  • the UE e.g., using reception component 1402, transmission component 1404, and/or communication manager 1406, depicted in Fig. 14
  • Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the pool of CMRs is a common pool of CMRs and each CMR in the pool of CMRs is associated with a different configured TCI state.
  • the rule specifies that the first TCI state is to be used for multiple CMRs.
  • the rule specifies that the UE is to select the first CMR based at least in part on a CMR ID.
  • the rule specifies that the UE is to select, as the first CMR, a CMR having a lowest CMR ID of CMRs that are associated with a TCI state that matches the first TCI state, and selecting the first CMR includes selecting the CMR having the lowest CMR ID.
  • the rule further specifies that the UE is to select, as a second CMR, a CMR having a second lowest CMR ID of the CMRs that are associated with the TCI state that matches the first TCI state, and process 1200 includes selecting, as the second CMR, the CMR having the second lowest CMR ID.
  • process 1200 includes communicating the second CMR using the first TCI state.
  • a different TCI state is to be used for each CMR of the pool of CMRs.
  • the rule specifies that the UE is to select, as the first CMR, a CMR associated with a TCI state that matches the first TCI state.
  • the rule further specifies that the UE is to select, as a second CMR, a CMR associated with a TCI state that matches a second TCI state.
  • process 1200 includes receiving an indication to activate the second TCI state, and selecting, as the second CMR, the CMR associated with the TCI state that matches the second TCI state.
  • process 1200 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 12. Additionally, or alternatively, two or more of the blocks of process 1200 may be performed in parallel.
  • Fig. 13 is a diagram illustrating an example process 1300 performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure.
  • Example process 1300 is an example where the apparatus or the UE (e.g., UE 120, UE 820) performs operations associated with selecting CMRs for mTRP.
  • the apparatus or the UE e.g., UE 120, UE 820
  • process 1300 may include transmitting an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state (block 1310) .
  • the UE e.g., using transmission component 1404 and/or communication manager 1406, depicted in Fig. 14
  • process 1300 may include transmitting an indication to activate a first TCI state (block 1320) .
  • the UE e.g., using transmission component 1404 and/or communication manager 1406, depicted in Fig. 14
  • process 1300 may include selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule (block 1330) .
  • the UE e.g., using communication manager 1406, depicted in Fig. 14
  • process 1300 may include communicating the first CMR using the first TCI state (block 1340) .
  • the UE e.g., using reception component 1402, transmission component 1404, and/or communication manager 1406, depicted in Fig. 14
  • Process 1300 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the rule specifies that the first TCI state is to be used for multiple CMRs.
  • the rule specifies that the UE is to select, as the first CMR, a CMR having a lowest CMR ID of CMRs that are associated with a TCI state that matches the first TCI state, and selecting the first CMR includes selecting the CMR having the lowest CMR ID.
  • the rule further specifies that the UE is to select, as a second CMR, a CMR having a second lowest CMR ID of the CMRs that are associated with the TCI state that matches the first TCI state, and process 1300 includes selecting, as the second CMR, the CMR having the second lowest CMR ID.
  • a different TCI state is to be used for each CMR of the pool of CMRs.
  • the rule specifies that the UE is to select, as the first CMR, a CMR associated with a TCI state that matches the first TCI state.
  • process 1300 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 13. Additionally, or alternatively, two or more of the blocks of process 1300 may be performed in parallel.
  • Fig. 14 is a diagram of an example apparatus 1400 for wireless communication, in accordance with the present disclosure.
  • the apparatus 1400 may be a UE, or a UE may include the apparatus 1400.
  • the apparatus 1400 includes a reception component 1402, a transmission component 1404, and/or a communication manager 1406, which may be in communication with one another (for example, via one or more buses and/or one or more other components) .
  • the communication manager 1406 is the communication manager 140 described in connection with Fig. 1.
  • the apparatus 1400 may communicate with another apparatus 1408, such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1402 and the transmission component 1404.
  • another apparatus 1408 such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1402 and the transmission component 1404.
  • the apparatus 1400 may be configured to perform one or more operations described herein in connection with Figs. 1-9. Additionally, or alternatively, the apparatus 1400 may be configured to perform one or more processes described herein, such as process 1000 of Fig. 10, process 1200 of Fig. 12, process 1300 of Fig. 13, or a combination thereof.
  • the apparatus 1400 and/or one or more components shown in Fig. 14 may include one or more components of the UE described in connection with Fig. 2. Additionally, or alternatively, one or more components shown in Fig. 14 may be implemented within one or more components described in connection with Fig. 2. Additionally, or alternatively, one or more components of the set of components may be implemented at least in part as software stored in one or more memories. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by one or more controllers or one or more processors to perform the functions or operations of the component.
  • the reception component 1402 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1408.
  • the reception component 1402 may provide received communications to one or more other components of the apparatus 1400.
  • the reception component 1402 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples) , and may provide the processed signals to the one or more other components of the apparatus 1400.
  • the reception component 1402 may include one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receive processors, one or more controllers/processors, one or more memories, or a combination thereof, of the UE described in connection with Fig. 2.
  • the transmission component 1404 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1408.
  • one or more other components of the apparatus 1400 may generate communications and may provide the generated communications to the transmission component 1404 for transmission to the apparatus 1408.
  • the transmission component 1404 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) , and may transmit the processed signals to the apparatus 1408.
  • the transmission component 1404 may include one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers/processors, one or more memories, or a combination thereof, of the UE described in connection with Fig. 2. In some aspects, the transmission component 1404 may be co-located with the reception component 1402 in one or more transceivers.
  • the communication manager 1406 may support operations of the reception component 1402 and/or the transmission component 1404. For example, the communication manager 1406 may receive information associated with configuring reception of communications by the reception component 1402 and/or transmission of communications by the transmission component 1404. Additionally, or alternatively, the communication manager 1406 may generate and/or provide control information to the reception component 1402 and/or the transmission component 1404 to control reception and/or transmission of communications.
  • the reception component 1402 may receive an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • the reception component 1402 may receive an indication to activate only the first TCI state.
  • the reception component 1402 and/or the transmission component 1404 may communicate one or more channels or signals using the first TCI state and a rule.
  • the reception component 1402 may receive an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the reception component 1402 may receive an indication to activate a first TCI state.
  • the communication manager 1406 may select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the reception component 1402 and/or the transmission component 1404 may communicate the first CMR using the first TCI state.
  • the communication manager 1406 may communicate the second CMR using the first TCI state.
  • the reception component 1402 may receive an indication to activate the second TCI state.
  • the communication manager 1406 may select, as the second CMR, the CMR associated with the TCI state that matches the second TCI state.
  • the transmission component 1404 may transmit an RRC configuration for a pool of CMRs associated with mTRP operation, each CMR of the pool of CMRs being associated with a TCI state.
  • the transmission component 1404 may transmit an indication to activate a first TCI state.
  • the communication manager 1406 may select a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule.
  • the reception component 1402 and/or the transmission component 1404 may communicate the first CMR using the first TCI state.
  • Fig. 14 The number and arrangement of components shown in Fig. 14 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 14. Furthermore, two or more components shown in Fig. 14 may be implemented within a single component, or a single component shown in Fig. 14 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 14 may perform one or more functions described as being performed by another set of components shown in Fig. 14.
  • Fig. 15 is a diagram of an example apparatus 1500 for wireless communication, in accordance with the present disclosure.
  • the apparatus 1500 may be a network entity, or a network entity may include the apparatus 1500.
  • the apparatus 1500 includes a reception component 1502, a transmission component 1504, and/or a communication manager 1506, which may be in communication with one another (for example, via one or more buses and/or one or more other components) .
  • the communication manager 1506 is the communication manager 150 described in connection with Fig. 1.
  • the apparatus 1500 may communicate with another apparatus 1508, such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1502 and the transmission component 1504.
  • another apparatus 1508 such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1502 and the transmission component 1504.
  • the apparatus 1500 may be configured to perform one or more operations described herein in connection with Figs. 1-9. Additionally, or alternatively, the apparatus 1500 may be configured to perform one or more processes described herein, such as process 1100 of Fig. 11.
  • the apparatus 1500 and/or one or more components shown in Fig. 15 may include one or more components of the network entity described in connection with Fig. 2. Additionally, or alternatively, one or more components shown in Fig. 15 may be implemented within one or more components described in connection with Fig. 2. Additionally, or alternatively, one or more components of the set of components may be implemented at least in part as software stored in one or more memories. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by one or more controllers or one or more processors to perform the functions or operations of the component.
  • the reception component 1502 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1508.
  • the reception component 1502 may provide received communications to one or more other components of the apparatus 1500.
  • the reception component 1502 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples) , and may provide the processed signals to the one or more other components of the apparatus 1500.
  • the reception component 1502 may include one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receive processors, one or more controllers/processors, one or more memories, or a combination thereof, of the network entity described in connection with Fig. 2.
  • the transmission component 1504 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1508.
  • one or more other components of the apparatus 1500 may generate communications and may provide the generated communications to the transmission component 1504 for transmission to the apparatus 1508.
  • the transmission component 1504 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) , and may transmit the processed signals to the apparatus 1508.
  • the transmission component 1504 may include one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers/processors, one or more memories, or a combination thereof, of the network entity described in connection with Fig. 2. In some aspects, the transmission component 1504 may be co-located with the reception component 1502 in one or more transceivers.
  • the communication manager 1506 may support operations of the reception component 1502 and/or the transmission component 1504. For example, the communication manager 1506 may receive information associated with configuring reception of communications by the reception component 1502 and/or transmission of communications by the transmission component 1504. Additionally, or alternatively, the communication manager 1506 may generate and/or provide control information to the reception component 1502 and/or the transmission component 1504 to control reception and/or transmission of communications.
  • the transmission component 1504 may transmit an RRC configuration for multiple TCI states associated with mTRP operation, including at least a first TCI state and a second TCI state.
  • the transmission component 1504 may transmit an indication to activate only the first TCI state.
  • the reception component 1502 and/or the transmission component 1504 may communicate one or more channels or signals using the first TCI state and a rule.
  • Fig. 15 The number and arrangement of components shown in Fig. 15 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 15. Furthermore, two or more components shown in Fig. 15 may be implemented within a single component, or a single component shown in Fig. 15 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 15 may perform one or more functions described as being performed by another set of components shown in Fig. 15.
  • a method of wireless communication performed by a user equipment (UE) comprising: receiving a radio resource control (RRC) configuration for multiple transmission configuration indicator (TCI) states associated with multiple transmit receive point (TRP) operation, including at least a first TCI state and a second TCI state; receiving an indication to activate only the first TCI state; and communicating one or more channels or signals using the first TCI state and a rule.
  • RRC radio resource control
  • TCI transmission configuration indicator
  • TRP transmit receive point
  • Aspect 2 The method of Aspect 1, wherein the rule specifies that the first TCI state is to apply to all channels and signals that are specific to at least the first TCI state and the second TCI state.
  • Aspect 3 The method of Aspect 1, wherein the rule specifies that the first TCI state is to apply only to channels or signals specific to the first TCI state.
  • Aspect 4 The method of Aspect 3, wherein the rule specifies that a TCI state having a lowest TCI state identifier (ID) of TCI state IDs of the multiple TCI states is to be applied to channels or signals that are not specific to the first TCI state.
  • ID TCI state identifier
  • Aspect 5 The method of any of Aspects 1-4, wherein communicating the one or more channels or signals includes communicating the one or more channels or signals using the first TCI state before receiving an indication to activate the second TCI state.
  • Aspect 6 The method of Aspect 5, wherein communicating the one or more channels or signals includes communicating the one or more channels or signals after an initial access.
  • Aspect 7 The method of Aspect 5, wherein communicating the one or more channels or signals includes communicating the one or more channels or signals after an RRC reconfiguration with synchronization.
  • Aspect 8 The method of Aspect 5, wherein communicating the one or more channels or signals includes communicating the one or more channels or signals after receiving a TCI activation medium access control control element (MAC CE) .
  • MAC CE TCI activation medium access control control element
  • a method of wireless communication performed by a network entity comprising: transmitting a radio resource control (RRC) configuration for multiple transmission configuration indicator (TCI) states associated with multiple transmit receive point (TRP) operation, including at least a first TCI state and a second TCI state; transmitting an indication to activate only the first TCI state; and communicating one or more channels or signals using the first TCI state and a rule.
  • RRC radio resource control
  • TCI transmission configuration indicator
  • TRP transmit receive point
  • Aspect 10 The method of Aspect 9, wherein the rule specifies that the first TCI state is to apply to all channels and signals that are specific to at least the first TCI state and the second TCI state.
  • Aspect 11 The method of Aspect 9, wherein the rule specifies that the first TCI state is to apply only to channels or signals specific to the first TCI state.
  • Aspect 12 The method of Aspect 11, wherein the rule specifies that a TCI state having a lowest TCI state identifier (ID) of TCI state IDs of the multiple TCI states is to be applied to channels or signals that are not specific to the first TCI state.
  • ID TCI state identifier
  • Aspect 13 The method of any of Aspects 9-12, wherein communicating the one or more channels or signals includes communicating the one or more channels or signals using the first TCI state before transmitting an indication to activate the second TCI state.
  • a method of wireless communication performed by a user equipment (UE) comprising: receiving a radio resource control (RRC) configuration for a pool of channel measurement resources (CMRs) associated with multiple transmit receive point (TRP) operation, each CMR of the pool of CMRs being associated with a transmission configuration indication (TCI) state; receiving an indication to activate a first TCI state; selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule; and communicating the first CMR using the first TCI state.
  • RRC radio resource control
  • CMRs channel measurement resources
  • TRP transmit receive point
  • TCI transmission configuration indication
  • Aspect 15 The method of Aspect 14, wherein the pool of CMRs is a common pool of CMRs and each CMR in the pool of CMRs is associated with a different configured TCI state.
  • Aspect 16 The method of any of Aspects 14-15, wherein the rule specifies that the first TCI state is to be used for multiple CMRs.
  • Aspect 17 The method of Aspect 16, wherein the rule specifies that the UE is to select the first CMR based at least in part on a CMR identifier (ID) .
  • Aspect 18 The method of Aspect 17, wherein the rule specifies that the UE is to select, as the first CMR, a CMR having a lowest CMR ID of CMRs that are associated with a TCI state that matches the first TCI state, and wherein selecting the first CMR includes selecting the CMR having the lowest CMR ID.
  • Aspect 19 The method of Aspect 18, wherein the rule further specifies that the UE is to select, as a second CMR, a CMR having a second lowest CMR ID of the CMRs that are associated with the TCI state that matches the first TCI state, and wherein the method includes selecting, as the second CMR, the CMR having the second lowest CMR ID.
  • Aspect 20 The method of Aspect 19, further comprising communicating the second CMR using the first TCI state.
  • Aspect 21 The method of any of Aspects 14-20, wherein a different TCI state is to be used for each CMR of the pool of CMRs.
  • Aspect 22 The method of Aspect 21, wherein the rule specifies that the UE is to select, as the first CMR, a CMR associated with a TCI state that matches the first TCI state.
  • Aspect 23 The method of Aspect 22, wherein the rule further specifies that the UE is to select, as a second CMR, a CMR associated with a TCI state that matches a second TCI state.
  • Aspect 24 The method of Aspect 23, further comprising: receiving an indication to activate the second TCI state; and selecting, as the second CMR, the CMR associated with the TCI state that matches the second TCI state.
  • a method of wireless communication performed by a user equipment (UE) comprising: transmitting a radio resource control (RRC) configuration for a pool of channel measurement resources (CMRs) associated with multiple transmit receive point (TRP) operation, each CMR of the pool of CMRs being associated with a transmission configuration indication (TCI) state; transmitting an indication to activate a first TCI state; selecting a first CMR from the pool of CMRs based at least in part on the first TCI state and a rule; and communicating the first CMR using the first TCI state.
  • RRC radio resource control
  • CMRs channel measurement resources
  • TRP transmit receive point
  • TCI transmission configuration indication
  • Aspect 26 The method of Aspect 25, wherein the rule specifies that the first TCI state is to be used for multiple CMRs.
  • Aspect 27 The method of Aspect 26, wherein the rule specifies that the UE is to select, as the first CMR, a CMR having a lowest CMR identifier (ID) of CMRs that are associated with a TCI state that matches the first TCI state, and wherein selecting the first CMR includes selecting the CMR having the lowest CMR ID.
  • ID CMR identifier
  • Aspect 28 The method of Aspect 27, wherein the rule further specifies that the UE is to select, as a second CMR, a CMR having a second lowest CMR ID of the CMRs that are associated with the TCI state that matches the first TCI state, and wherein the method includes selecting, as the second CMR, the CMR having the second lowest CMR ID.
  • Aspect 29 The method of any of Aspects 25-28, wherein a different TCI state is to be used for each CMR of the pool of CMRs.
  • Aspect 30 The method of Aspect 29, wherein the rule specifies that the UE is to select, as the first CMR, a CMR associated with a TCI state that matches the first TCI state.
  • Aspect 31 An apparatus for wireless communication at a device, the apparatus comprising one or more processors; one or more memories coupled with the one or more processors; and instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to perform the method of one or more of Aspects 1-30.
  • Aspect 32 An apparatus for wireless communication at a device, the apparatus comprising one or more memories and one or more processors coupled to the one or more memories, the one or more processors configured to cause the device to perform the method of one or more of Aspects 1-30.
  • Aspect 33 An apparatus for wireless communication, the apparatus comprising at least one means for performing the method of one or more of Aspects 1-30.
  • Aspect 34 A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to perform the method of one or more of Aspects 1-30.
  • Aspect 35 A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 1-30.
  • Aspect 36 A device for wireless communication, the device comprising a processing system that includes one or more processors and one or more memories coupled with the one or more processors, the processing system configured to cause the device to perform the method of one or more of Aspects 1-30.
  • Aspect 37 An apparatus for wireless communication at a device, the apparatus comprising one or more memories and one or more processors coupled to the one or more memories, the one or more processors individually or collectively configured to cause the device to perform the method of one or more of Aspects 1-30.
  • the term “component” is intended to be broadly construed as hardware or a combination of hardware and at least one of software or firmware.
  • “Software” shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, or functions, among other examples, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • a “processor” is implemented in hardware or a combination of hardware and software. It will be apparent that systems or methods described herein may be implemented in different forms of hardware or a combination of hardware and software.
  • a component being configured to perform a function means that the component has a capability to perform the function, and does not require the function to be actually performed by the component, unless noted otherwise.
  • satisfying a threshold may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, or not equal to the threshold, among other examples.
  • a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a + b, a + c, b + c, and a + b + c, as well as any combination with multiples of the same element (for example, a + a, a + a + a, a + a + b, a + a + c, a + b + b, a + c + c, b + b, b + b + b, b + b + c, c + c, or any other ordering of a, b, and c) .
  • the terms “has, ” “have, ” “having, ” and similar terms are intended to be open-ended terms that do not limit an element that they modify (for example, an element “having” A may also have B) .
  • the phrase “based on” is intended to mean “based on or otherwise in association with” unless explicitly stated otherwise.
  • the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and/or, ” unless explicitly stated otherwise (for example, if used in combination with “either” or “only one of” ) . It should be understood that “one or more” is equivalent to “at least one. ”

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Divers aspects de la présente divulgation concernent de manière générale les communications sans fil. Selon certains aspects, un équipement utilisateur (UE) peut recevoir une configuration de commande de ressource radio pour de multiples états d'indicateur de configuration de transmission (TCI) associés à une opération de point d'émission et de réception multiple, comprenant au moins un premier état TCI et un second état TCI. L'UE peut recevoir une indication pour activer uniquement le premier état TCI. L'UE peut communiquer un ou plusieurs canaux ou signaux à l'aide du premier état TCI et d'une règle. De nombreux autres aspects sont décrits.
PCT/CN2023/129198 2023-11-02 2023-11-02 État d'indicateur de configuration de transmission pour de multiples points d'émission et de réception Pending WO2025091358A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/129198 WO2025091358A1 (fr) 2023-11-02 2023-11-02 État d'indicateur de configuration de transmission pour de multiples points d'émission et de réception

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/129198 WO2025091358A1 (fr) 2023-11-02 2023-11-02 État d'indicateur de configuration de transmission pour de multiples points d'émission et de réception

Publications (1)

Publication Number Publication Date
WO2025091358A1 true WO2025091358A1 (fr) 2025-05-08

Family

ID=95582756

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/129198 Pending WO2025091358A1 (fr) 2023-11-02 2023-11-02 État d'indicateur de configuration de transmission pour de multiples points d'émission et de réception

Country Status (1)

Country Link
WO (1) WO2025091358A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230216644A1 (en) * 2022-01-05 2023-07-06 Qualcomm Incorporated Single frequency network transmission configuration indicator (tci) state activation
WO2023170713A1 (fr) * 2022-03-10 2023-09-14 Centre Of Excellence In Wireless Technology Procédé de communication dans un système à multiples points de transmission/réception

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230216644A1 (en) * 2022-01-05 2023-07-06 Qualcomm Incorporated Single frequency network transmission configuration indicator (tci) state activation
WO2023170713A1 (fr) * 2022-03-10 2023-09-14 Centre Of Excellence In Wireless Technology Procédé de communication dans un système à multiples points de transmission/réception

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "Multi-CC simultaneous TCI activation with multi-TRP/panel transmission", 3GPP DRAFT; R2-2010628, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. electronic; 20201102 - 20201113, 23 October 2020 (2020-10-23), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051943286 *
MEDIATEK INC.: "CR on TCI state switch (section 8.10)", 3GPP DRAFT; R4-1913578, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG4, no. Reno, Nevada, USA; 20191118 - 20191122, 8 November 2019 (2019-11-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051818151 *
ZTE: "Further details on Multi-beam and Multi-TRP operation", 3GPP DRAFT; R1-2106548, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20210816 - 20210827, 7 August 2021 (2021-08-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP052041695 *

Similar Documents

Publication Publication Date Title
WO2025091358A1 (fr) État d'indicateur de configuration de transmission pour de multiples points d'émission et de réception
WO2025145368A1 (fr) Balayage de faisceau initié par équipement utilisateur
WO2025102231A1 (fr) Rapport de marge de puissance dans une opération de point d'émission et de réception multiple
WO2025222361A1 (fr) Sélection d'un état d'indication de configuration de transmission pour une transmission de canal physique d'accès aléatoire
US20250280301A1 (en) Beam combining in distributed antenna arrays
WO2025208567A1 (fr) Port bloqué pour transmission de signal de référence de sondage sur trois ports
US20250280365A1 (en) Physical uplink shared channel power control
US20250317909A1 (en) Aggregation factor parameter for control plane
WO2025208548A1 (fr) Ressources de signal de référence d'informations d'état de canal virtuel
WO2025213436A1 (fr) Direction de communication en liaison montante basée sur un signal de référence de sondage
WO2025179412A1 (fr) Indication de caractéristiques de faisceau de réception
US20250294483A1 (en) Synchronization signal block communications
WO2025227279A1 (fr) Configuration de rapport de mobilité déclenchée par couche inférieure
WO2025065319A1 (fr) Mesure d'informations d'état de canal
US20250247869A1 (en) Indication for full-duplex-aware devices
US20250261022A1 (en) Reporting channel state information feedback for network-side model training
WO2025171626A1 (fr) Informations de commande de liaison descendante non planifiées pour indiquer des intervalles de mesure
WO2025111836A1 (fr) Priorité de rapport d'informations d'état de canal
WO2025199673A1 (fr) Rapports de faisceaux multiplexés
US20250301308A1 (en) Limited transmission bandwidth capability
WO2025091200A1 (fr) Commande de puissance séparée pour transmissions de signaux de référence de sondage
WO2025166712A1 (fr) Commande de puissance en boucle fermée pour transmissions de signal de référence de sondage
US20250324369A1 (en) Power allocation across polarization ports
WO2025236271A1 (fr) Détection de défaillance de faisceau uniquement en liaison montante
WO2025241078A1 (fr) Première ressource de canal de commande de liaison montante physique pour rapport de faisceau

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: 23957231

Country of ref document: EP

Kind code of ref document: A1