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WO2025145368A1 - Balayage de faisceau initié par équipement utilisateur - Google Patents

Balayage de faisceau initié par équipement utilisateur Download PDF

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Publication number
WO2025145368A1
WO2025145368A1 PCT/CN2024/070514 CN2024070514W WO2025145368A1 WO 2025145368 A1 WO2025145368 A1 WO 2025145368A1 CN 2024070514 W CN2024070514 W CN 2024070514W WO 2025145368 A1 WO2025145368 A1 WO 2025145368A1
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WO
WIPO (PCT)
Prior art keywords
tci
beam sweeping
initiated
mtrp
reference signal
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/CN2024/070514
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English (en)
Inventor
Fang Yuan
Yan Zhou
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Qualcomm Inc
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Qualcomm Inc
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Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to PCT/CN2024/070514 priority Critical patent/WO2025145368A1/fr
Publication of WO2025145368A1 publication Critical patent/WO2025145368A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H04B7/0696—Determining beam pairs
    • H04B7/06962—Simultaneous selection of transmit [Tx] and receive [Rx] beams at both sides of a link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H04B7/06964—Re-selection of one or more beams after beam failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H04B7/06968—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping using quasi-colocation [QCL] between signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection

Definitions

  • aspects of the present disclosure generally relate to wireless communication and specifically relate to techniques, apparatuses, and methods for user equipment (UE) -initiated beam sweeping.
  • UE user equipment
  • 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
  • Fig. 5 is a diagram illustrating an example of an implicit beam switch, in accordance with the present disclosure.
  • a method of wireless communication performed by a UE includes receiving a configuration associated with an sTRP scheme or an mTRP scheme; and performing, based at least in part on the configuration, a UE-initiated beam switching, wherein the UE-initiated beam switching is for an sTRP operation or an mTRP simultaneous operation.
  • an apparatus for wireless communication includes means for receiving an RRC configuration associated with a UE-initiated beam sweeping; means for transmitting, based at least in part on the RRC configuration, a request for UE-initiated beam sweeping, wherein the request indicates QCL information for the UE-initiated beam sweeping; and means for receiving a plurality of reference signals based at least in part on the UE-initiated beam sweeping, wherein the UE-initiated beam sweeping is a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation.
  • an apparatus for wireless communication includes means for receiving a configuration associated with an sTRP scheme or an mTRP scheme; and means for performing, based at least in part on the configuration, a UE-initiated beam switching, wherein the UE-initiated beam switching is for an sTRP operation or an mTRP simultaneous operation.
  • an apparatus for wireless communication includes means for transmitting an RRC configuration associated with a UE-initiated beam sweeping; means for receiving, based at least in part on the RRC configuration, a request for UE-initiated beam sweeping, wherein the request indicates QCL information for the UE-initiated beam sweeping; and means for transmitting a plurality of reference signals based at least in part on the UE-initiated beam sweeping, wherein the UE-initiated beam sweeping is a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation.
  • 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.
  • UE-initiated/event-driven beam management may serve to reduce overhead and/or latency.
  • a UE-initiated beam management procedure may include UE-initiated beam reporting/switching.
  • the UE-initiated beam reporting/switching may be in contrast to a legacy beam switch, which may be indicated by a network node. While a UE-initiated beam report may be specified, a UE-initiated beam sweeping is not configured for a UE.
  • the UE-initiated beam management procedure does not clarify whether UE-initiated beam sweeping should be supported by the UE. A lack of support for UE-initiated beam sweeping may degrade an overall system performance.
  • a UE may receive, from a network node, an RRC configuration associated with a UE-initiated beam sweeping.
  • the UE may transmit, to the network node and based at least in part on the RRC configuration, a request for UE-initiated beam sweeping.
  • the request may indicate quasi co-location (QCL) information for the UE-initiated beam sweeping.
  • the UE may receive, from the network node, a plurality of reference signals based at least in part on the UE-initiated beam sweeping.
  • the described techniques can be used by the UE to transmit the request for UE-initiated beam sweeping and then subsequently receive the plurality of reference signals based at least in part on the UE-initiated beam sweeping.
  • the UE-initiated beam sweeping may be associated with a UE-initiated beam reporting.
  • the UE and/or the network node may be able to support the UE-initiated beam sweeping, which may improve an overall system performance.
  • 5G NR 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
  • 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.
  • 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 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
  • 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 uncrewed aerial vehicle, 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, enhanced mobile broadband (eMBB) , and/or precise positioning in the wireless communication network 100, among other examples.
  • eMBB enhanced mobile broadband
  • 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 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 operation including redundant transmission or reception on multiple TRPs
  • SFN single-frequency-network
  • NC-JT non-coherent joint transmission
  • a UE may include a communication manager 140.
  • the communication manager 140 may receive an RRC configuration associated with a UE-initiated beam sweeping; transmit, based at least in part on the RRC configuration, a request for UE-initiated beam sweeping, wherein the request indicates QCL information for the UE-initiated beam sweeping; and receive a plurality of reference signals based at least in part on the UE-initiated beam sweeping, wherein the UE-initiated beam sweeping is a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation.
  • the communication manager 140 may receive a configuration associated with an sTRP scheme or an mTRP scheme and perform, based at least in part on the configuration, a UE-initiated beam switching, wherein the UE-initiated beam switching is for an sTRP operation or an mTRP simultaneous operation. Additionally, or alternatively, the communication manager 140 may perform one or more other operations described herein.
  • the network node 110 may include a communication manager 150.
  • the communication manager 150 may transmit an RRC configuration associated with a UE-initiated beam sweeping; receive, based at least in part on the RRC configuration, a request for UE-initiated beam sweeping, wherein the request indicates QCL information for the UE-initiated beam sweeping; and transmit a plurality of reference signals based at least in part on the UE-initiated beam sweeping, wherein the UE-initiated beam sweeping is a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation. 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.
  • 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
  • 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.
  • the shape of a beam (such as the amplitude, width, and/or presence of side lobes) and/or the direction of a beam (such as an angle of the beam relative to a surface of an antenna array) can be dynamically controlled by modifying the phase shifts, phase offsets, and/or amplitudes of the multiple signals relative to each other.
  • 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.
  • 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
  • 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 UE-initiated beam sweeping, 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 700 of Fig. 7, process 800 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 700 of Fig. 7, process 800 of Fig. 8, process 900 of Fig. 9, 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., the UE 120) includes means for receiving an RRC configuration associated with a UE-initiated beam sweeping; means for transmitting, based at least in part on the RRC configuration, a request for UE-initiated beam sweeping, wherein the request indicates QCL information for the UE-initiated beam sweeping; and/or means for receiving a plurality of reference signals based at least in part on the UE-initiated beam sweeping, wherein the UE-initiated beam sweeping is a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation.
  • the UE includes means for receiving a configuration associated with an sTRP scheme or an mTRP scheme; and/or means for performing, based at least in part on the configuration, a UE-initiated beam switching, wherein the UE-initiated beam switching is for an sTRP operation or an mTRP simultaneous operation.
  • 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.
  • a network node (e.g., the network node 110) includes means for transmitting an RRC configuration associated with a UE-initiated beam sweeping; means for receiving, based at least in part on the RRC configuration, a request for UE-initiated beam sweeping, wherein the request indicates QCL information for the UE-initiated beam sweeping; and/or means for transmitting a plurality of reference signals based at least in part on the UE-initiated beam sweeping, wherein the UE-initiated beam sweeping is a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation.
  • the means for the network node to perform operations described herein may include, for example, one or more of communication manager 150, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or
  • beam management enhancements may be defined to reduce overhead/latency through UE-initiated/event-driven beam management.
  • Signaling (or a mechanism) may be defined to facilitate a UE-initiated beam management procedure, which may include UE-initiated beam reporting/switching.
  • CSI framework enhancements may be defined to support 32, 64, and/or 128 CSI-RS ports.
  • the CSI framework enhancements may include Type I codebook enhancements to support more than 32 CSI-RS ports, Type II codebook enhancements to support more than 32 CSI-RS ports, and/or hybrid beamforming enhancements.
  • coherent joint transmission (CJT) or downlink mTRP enhancements may be defined, which may include UE-assisted calibration reporting of delay and frequency/phase offsets for CJT with non-ideal synchronization and backhaul.
  • CJT coherent joint transmission
  • UE-assisted calibration reporting of delay and frequency/phase offsets for CJT with non-ideal synchronization and backhaul may be assumed.
  • uplink enhancements may be defined.
  • the uplink enhancements may include simultaneous transmission across multiple panels (STxMP) enhancements.
  • the STxMP enhancements may include simultaneous transmissions of PUCCH/PUSCH, asymmetric panel implementations, multiple DCI (mDCI) PUCCH, STxMP with up to rank 8, and/or coherent SFN STxMP.
  • the uplink enhancements may include enhancements for uplink three transmit (3Tx) , which may include 3Tx for uplink codebook and non-codebook based transmissions.
  • an enhancement for an asymmetric downlink sTRP or mTRP scenario may be defined, which may assume intra-band, intra-cell, and non-co-located mTRP scenarios without changing existing cell definition or defining a new cell.
  • a two timing advance (TA) (2TA) multiple DCI (mDCI) scheme may be extended to a single DCI (sDCI) scheme assuming legacy PRACH resources.
  • TA timing advance
  • mDCI multiple DCI
  • sDCI single DCI
  • 6Rx/8Rx UE enhancements may be defined.
  • the 6Rx/8Rx UE enhancements may be with lower complexity utilizing two segments of 3/4 Rx antenna units up to 8-layer downlink Tx based at least in part on legacy codebook and legacy codeword to layer mapping.
  • SRS antenna port grouping and CSI and codeword association to the segments of an Rx antenna may be defined.
  • UE-initiated/event-driven beam management may serve to reduce overhead and/or latency.
  • a UE-initiated beam management procedure may include UE-initiated beam reporting/switching.
  • the UE-initiated beam reporting/switching may be in contrast to a legacy beam switch, which may be indicated by a network node. While a UE-initiated beam report may be specified, a UE-initiated beam sweeping is not configured for a UE.
  • the UE-initiated beam management procedure does not clarify whether UE-initiated beam sweeping should be supported by the UE. A lack of support for UE-initiated beam sweeping may degrade an overall system performance.
  • a UE may receive, from a network node, an RRC configuration associated with a UE-initiated beam sweeping.
  • the UE may transmit, to the network node and based at least in part on the RRC configuration, a request for UE-initiated beam sweeping.
  • the request may indicate QCL information for the UE-initiated beam sweeping.
  • the UE may receive, from the network node, a plurality of reference signals based at least in part on the UE-initiated beam sweeping.
  • the UE-initiated beam sweeping may be a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation.
  • the UE may be able to transmit the request for UE-initiated beam sweeping and then subsequently receive the plurality of reference signals based at least in part on the UE-initiated beam sweeping.
  • the UE-initiated beam sweeping may be associated with a UE-initiated beam reporting.
  • the UE and/or the network node may be able to support the UE-initiated beam sweeping, which may improve an overall system performance.
  • Fig. 4 is a diagram illustrating an example 400 associated with UE-initiated beam sweeping, in accordance with the present disclosure.
  • example 400 includes communication between a UE (e.g., UE 120) and a network node (e.g., network node 110) .
  • the UE and the network node may be included in a wireless network, such as wireless network 100.
  • the UE may receive, from the network node, an RRC configuration associated with a UE-initiated beam sweeping.
  • the UE may be configured via RRC signaling to enable the UE-initiated beam sweeping.
  • the UE-initiated beam sweeping is a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation.
  • the UE may be configured via the RRC signaling to enable UT-initiated beam sweeping for an sTRP operation or an mTRP operation.
  • the UE may transmit, to the network node and based at least in part on the RRC configuration, a request for UE-initiated beam sweeping.
  • the request may indicate QCL information for the UE-initiated beam sweeping.
  • the QCL information may enable the network node to transmit reference signals to the UE in accordance with the UE-initiated beam sweeping.
  • UE-initiated beam sweeping may be supported by the UE.
  • the UE-initiated beam sweeping may be a UE-initiated beam management procedure for sTRP beam sweeping.
  • the UE-initiated beam sweeping may be a UE-initiated beam management procedure for the per-TRP beam sweeping in the mTRP operation.
  • UE-initiated sTRP beam sweeping or per-TRP beam sweeping in an mTRP operation may be supported by the UE.
  • the UE may be configured via RRC signaling to enable UE-initiated beam sweeping.
  • the UE may indicate, to the network node, the QCL information in the request for UE-initiated beam sweeping.
  • the UE may indicate the QCL information in the request for UE-initiated beam sweeping based at least in part on a first option, a second option, a third option, or a fourth option.
  • the UE may indicate a transmission configuration indicator (TCI) identifier (ID) associated with a TCI.
  • TCI ID may be selected from a TCI state pool, or from a set of activated TCI states.
  • the QCL information may be associated with the TCI and may be used for beam sweeping.
  • the UE may indicate a reference signal ID associated with a reference signal.
  • the reference signal ID may be an absolute reference signal ID, or the reference signal ID may be a selected reference signal ID from an RRC configured reference signal pool.
  • the reference signal may be a synchronization signal block (SSB) (corresponding to an SSB ID) or a CSI-RS (corresponding to a CSI-RS ID) .
  • SSB synchronization signal block
  • CSI-RS corresponding to a CSI-RS ID
  • the CSI-RS may be configured with a TCI.
  • the QCL information may be associated with the reference signal and may be used for beam sweeping.
  • a CSI report associated with the CSI report configuration ID, may be configured with a CSI report quantity set to “none” , which may be intended for beam sweeping.
  • a measurement reference signal set with an RRC parameter “repetition” set as “on” may be associated with the CSI report.
  • the QCL information may be associated with the measurement reference signal set, which may be associated with the CSI report, and the QCL information may be used for beam sweeping.
  • the UE may indicate, to the network node, a pair of QCL information in the request for UE-initiated beam sweeping.
  • the UE may indicate the pair of QCL information in the request for UE-initiated beam sweeping based at least in part on a first option, a second option, a third option, or a fourth option.
  • the UE may indicate a pair of TCI IDs.
  • the TCI IDs may be selected from a TCI state pool, or the TCI IDs may be selected from a set of activated TCI states.
  • the pair of QCL information may be associated with the TCIs and may be used for beam sweeping.
  • the UE in the second option, may indicate a pair of reference signal IDs, where the reference signal IDs may be associated with respective reference signals.
  • a reference signal ID may be an absolute reference signal ID, or the reference signal ID may be a selected reference signal ID from an RRC configured reference signal pool.
  • the UE in UE-initiated beam sweeping, may be configured with a reference signal set without any preconfigured/indicated TCI for sTRP beam sweeping, or per-TRP beam sweeping in an mTRP operation.
  • the reference signal set may be an aperiodic CSI-RS set. After the UE transmits the request, the UE may expect to receive the reference signal set using QCL information sent in the request for corresponding beam sweeping.
  • the reference signal set may be triggered by a DCI with a CSI request in response to the request.
  • the UE in the UE-initiated beam sweeping, may be configured with two reference signal sets without any preconfigured/indicated TCI for simultaneous mTRP operation.
  • the reference signal set may be an aperiodic CSI-RS set.
  • the UE may expect to receive the two reference signal sets using the two QCL information sent in the request for corresponding beam sweeping.
  • a mapping between the two QCL information and the two reference signal sets may be a one-to-one mapping.
  • the two reference signal sets may be triggered by a DCI with a CSI request in response to the request. Further, two slot offsets may be configured or indicated for the two reference signal sets.
  • Fig. 4 is provided as an example. Other examples may differ from what is described with regard to Fig. 4.
  • Fig. 5 is a diagram illustrating an example 500 of an implicit beam switch, in accordance with the present disclosure.
  • example 500 includes communication between a UE (e.g., UE 120) and a network node (e.g., network node 110) .
  • the UE and the network node may be included in a wireless network, such as wireless network 100.
  • Fig. 5 is provided as an example. Other examples may differ from what is described with regard to Fig. 5.
  • Fig. 6 is a diagram illustrating an example 600 associated with UE-initiated beam switching, in accordance with the present disclosure.
  • example 600 includes communication between a UE (e.g., UE 120) and a network node (e.g., network node 110) .
  • the UE and the network node may be included in a wireless network, such as wireless network 100.
  • the UE may receive, from the network node, a configuration associated with an sTRP scheme or an mTRP scheme.
  • the configuration may be an RRC configuration.
  • the RRC configuration may indicate the sTRP scheme or the mTRP scheme.
  • the UE may perform, based at least in part on the configuration, a UE-initiated beam switching.
  • the UE-initiated beam switching may be for an sTRP operation or an mTRP simultaneous operation.
  • the UE-initiated beam switching may be from an sTRP of a first TCI to an sTRP of a second TCI.
  • the UE-initiated beam switching may be from an mTRP of the first TCI and the second TCI to an sTRP of the first TCI and the second TCI.
  • the UE-initiated beam switching may be from the mTRP of the first TCI and the second TCI to an sTRP of a third TCI.
  • the UE may initiate the beam switch from sTRP of TCI A to mTRP of TCI A and B.
  • the UE may initiate the beam switch from sTRP of TCI A to mTRP of TCI C and D.
  • switching may be predetermined or configured by RRC signaling.
  • the UE may be only allowed to initiate a beam switch for one case.
  • signaling may be indicated by the UE.
  • the UE may indicate which case is selected for the initiated beam switch.
  • the UE when the UE reports multiple reference signals in a CSI report, the unified TCI quasi co-located to the reference signal with the best reported metric may be applied to the associated channels.
  • the UE instead of a CSI report with at least one reference signal index, the UE may provide a TCI in a dedicated request for an implicit beam switch under an sTRP operation.
  • a beam application time may be determined based at least in part on whether or not a new TCI is activated. In a first case, when the TCI is not activated, the beam application time may be at least 3 ms from an end of a CSI report/dedicated request. In a second case, when the TCI is activated, the beam application time may be at least several slots from an end of a CSI report/dedicated request.
  • 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 process 700 performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure.
  • Example process 700 is an example where the apparatus or the UE (e.g., UE 120) performs operations associated with UE-initiated beam sweeping.
  • the apparatus or the UE e.g., UE 120
  • process 700 may include receiving an RRC configuration associated with a UE-initiated beam sweeping (block 710) .
  • the UE e.g., using reception component 1002 and/or communication manager 1006, depicted in Fig. 10) may receive an RRC configuration associated with a UE-initiated beam sweeping, as described above in connection with Figs. 4-6.
  • process 700 may include receiving a plurality of reference signals based at least in part on the UE-initiated beam sweeping, wherein the UE-initiated beam sweeping is a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation (block 730) .
  • the UE e.g., using reception component 1002 and/or communication manager 1006, depicted in Fig.
  • the UE-initiated beam sweeping is a UE-initiated sTRP beam sweeping, a per-TRP beam sweeping in an mTRP operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation, as described above in connection with Figs. 4-6.
  • Process 700 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 request indicates a TCI ID associated with a TCI
  • the TCI ID is selected from a TCI state pool or from a set of activated TCI states
  • the QCL information is associated with the TCI and is used for the UE-initiated beam sweeping.
  • the request indicates a reference signal ID associated with a reference signal
  • the reference signal ID is an absolute reference signal ID or a selected reference signal ID from an RRC configured reference signal pool
  • the reference signal is an SSB or a CSI-RS
  • the QCL information is associated with the reference signal and is used for the UE-initiated beam sweeping.
  • the request indicates a TCI
  • the TCI is a first TCI or a second TCI for a single DCI mTRP TDM operation
  • the TCI is associated with a CORESET pool value 0 or a CORESET pool value 1 for a multiple DCI mTRP TDM operation
  • the TCI is ignored for an sTRP operation
  • the QCL information is associated with the TCI and is used for the UE-initiated beam sweeping.
  • the request indicates a CSI report configuration ID associated with a CSI report
  • the CSI report is configured with a CSI report quantity set to “none” that is intended for beam sweeping
  • a measurement reference signal set with a repetition parameter set as “on” is associated with the CSI report
  • the QCL information is associated with the measurement reference signal set and is used for the UE-initiated beam sweeping.
  • the plurality of reference signals are received without a preconfigured or indicated TCI for the sTRP beam sweeping or the per-TRP beam sweeping in the mTRP operation.
  • the request indicates a pair of TCI IDs associated with a pair of TCIs
  • the pair of TCI IDs are selected from a TCI state pool or from a set of activated TCI states
  • the QCL information is a pair of QCL information associated with the pair of TCIs and is used for the UE-initiated beam sweeping.
  • the request indicates a pair of reference signal IDs associated with a pair of reference signals
  • the pair of reference signal IDs include absolute reference signal IDs or selected reference signal IDs from an RRC configured reference signal pool
  • the pair of reference signals include SSBs or CSI-RSs
  • the QCL information is a pair of QCL information associated with the pair of reference signals and is used for the UE-initiated beam sweeping.
  • the request indicates two TCIs by default, the two TCIs include a first TCI and a second TCI for a single DCI mTRP TDM operation, the two TCIs include a first TCI associated with a CORESET pool value 0 and a second TCI associated with a CORESET pool value 1 for a multiple DCI mTRP TDM operation, and the QCL information is a pair of QCL information associated with the two TCIs and is used for the UE-initiated beam sweeping.
  • the request indicates a CSI report configuration identifier associated with a CSI report
  • the CSI report is configured with a CSI report quantity set to “none”
  • two measurement reference signal sets are associated with the CSI report where each measurement reference signal set is with a repetition parameter set to “on” that is intended for beam sweeping
  • the QCL information is a pair of QCL information associated with the two measurement reference signal sets.
  • the plurality of reference signals are received without a preconfigured or indicated TCI for the UE-initiated beam sweeping for the mTRP simultaneous operation.
  • process 700 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 7. Additionally, or alternatively, two or more of the blocks of process 700 may be performed in parallel.
  • the UE-initiated beam switching is from an sTRP of a first TCI to an sTRP of a second TCI
  • the UE-initiated beam switching is from an mTRP of the first TCI and the second TCI to an sTRP of the first TCI and the second TCI
  • the UE-initiated beam switching is from the mTRP of the first TCI and the second TCI to an sTRP of a third TCI
  • the UE-initiated beam switching is from the mTRP of the first TCI and the second TCI to an mTRP of the third TCI and a fourth TCI
  • the UE-initiated beam switching is from the sTRP of the first TCI to the mTRP of the first TCI and the second TCI
  • the UE-initiated beam switching is from the sTRP of the first TCI to the mTRP of the third TCI and the fourth TCI.
  • Aspect 6 The method of any of Aspects 1-5, wherein the plurality of reference signals are received without a preconfigured or indicated transmission configuration indicator (TCI) for the sTRP beam sweeping or the per-TRP beam sweeping in the mTRP operation.
  • TCI transmission configuration indicator
  • Aspect 7 The method of any of Aspects 1-6, wherein the request indicates a pair of transmission configuration indicator (TCI) identifiers (IDs) associated with a pair of TCIs, the pair of TCI IDs are selected from a TCI state pool or from a set of activated TCI states, and the QCL information is a pair of QCL information associated with the pair of TCIs and is used for the UE-initiated beam sweeping.
  • TCI transmission configuration indicator
  • IDs transmission configuration indicator identifiers
  • Aspect 8 The method of any of Aspects 1-7, wherein the request indicates a pair of reference signal identifiers (IDs) associated with a pair of reference signals, the pair of reference signal IDs include absolute reference signal IDs or selected reference signal IDs from an RRC configured reference signal pool, the pair of reference signals include synchronization signal blocks (SSBs) or channel state information reference signals (CSI-RSs) , and the QCL information is a pair of QCL information associated with the pair of reference signals and is used for the UE-initiated beam sweeping.
  • IDs reference signal identifiers
  • the pair of reference signal IDs include absolute reference signal IDs or selected reference signal IDs from an RRC configured reference signal pool
  • the pair of reference signals include synchronization signal blocks (SSBs) or channel state information reference signals (CSI-RSs)
  • the QCL information is a pair of QCL information associated with the pair of reference signals and is used for the UE-initiated beam sweeping.
  • Aspect 10 The method of any of Aspects 1-9, wherein the request indicates a channel state information (CSI) report configuration identifier associated with a CSI report, the CSI report is configured with a CSI report quantity set to “none” , two measurement reference signal sets are associated with the CSI report where each measurement reference signal set is with a repetition parameter set to “on” that is intended for beam sweeping, and the QCL information is a pair of QCL information associated with the two measurement reference signal sets.
  • CSI channel state information
  • Aspect 13 The method of Aspect 12, wherein: the UE-initiated beam switching is from an sTRP of a first transmission configuration indicator (TCI) to an sTRP of a second TCI, the UE-initiated beam switching is from an mTRP of the first TCI and the second TCI to an sTRP of the first TCI and the second TCI, the UE-initiated beam switching is from the mTRP of the first TCI and the second TCI to an sTRP of a third TCI, the UE-initiated beam switching is from the mTRP of the first TCI and the second TCI to an mTRP of the third TCI and a fourth TCI, the UE-initiated beam switching is from the sTRP of the first TCI to the mTRP of the first TCI and the second TCI, or the UE-initiated beam switching is from the sTRP of the first TCI to the mTRP of the third T
  • Aspect 14 The method of any of Aspects 12-13, wherein: the UE-initiated beam switching is predetermined or configured via radio resource control (RRC) signaling, or the UE-initiated beam switching is indicated by the UE.
  • RRC radio resource control
  • Aspect 15 The method of any of Aspects 12-14, wherein the configuration configures a non-group-based channel state information (CSI) report for an implicit beam switch under the sTRP operation, each channel measurement resource (CMR) is quasi co-located to a unified transmission configuration indicator (TCI) , and the unified TCI corresponds to a reported reference signal and is applied to channels or reference signals associated with a unified TCI state after a beam application time from an end of the non-group-based CSI report.
  • CSI channel state information
  • CMR channel measurement resource
  • TCI transmission configuration indicator
  • Aspect 16 The method of any of Aspects 12-15, wherein the configuration configures a group-based channel state information (CSI) report for an implicit beam switch under the mTRP simultaneous operation, each channel measurement resource (CMR) is quasi co-located to a unified transmission configuration indicator (TCI) , and a pair of unified TCIs correspond to a reported reference signal and are applied to channels or reference signals associated with the pair of unified TCIs after a beam application time from an end of the group-based CSI report.
  • CSI channel state information
  • CMR channel measurement resource
  • TCI transmission configuration indicator
  • Aspect 17 The method of any of Aspects 12-16, wherein the UE-initiated beam switching is an implicit beam switching based at least in part on a channel state information (CSI) report or a dedicated request, and a beam application time is based at least in part on whether or not a new transmission configuration indicator (TCI) is activated.
  • CSI channel state information
  • TCI transmission configuration indicator
  • a method of wireless communication performed by a network node comprising: transmitting a radio resource control (RRC) configuration associated with a user equipment (UE) -initiated beam sweeping; receiving, based at least in part on the RRC configuration, a request for UE-initiated beam sweeping, wherein the request indicates quasi co-location (QCL) information for the UE-initiated beam sweeping; and transmitting a plurality of reference signals based at least in part on the UE-initiated beam sweeping, wherein the UE-initiated beam sweeping is a UE-initiated single transmission reception point (TRP) (sTRP) beam sweeping, a per-TRP beam sweeping in a multiple TRP (mTRP) operation, or a UE-initiated beam sweeping for an mTRP simultaneous operation.
  • RRC radio resource control
  • UE user equipment
  • UE user equipment
  • Aspect 19 The method of Aspect 18, wherein the plurality of reference signals are transmitted without a preconfigured or indicated transmission configuration indicator (TCI) for the sTRP beam sweeping or the per-TRP beam sweeping in the mTRP operation.
  • TCI transmission configuration indicator
  • Aspect 20 The method of any of Aspects 18-19, wherein the plurality of reference signals are transmitted without a preconfigured or indicated transmission configuration indicator (TCI) for the UE-initiated beam sweeping for the mTRP simultaneous operation.
  • TCI transmission configuration indicator
  • Aspect 21 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 1-20.
  • Aspect 22 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 1-20.
  • Aspect 23 An apparatus for wireless communication, the apparatus comprising at least one means for performing the method of one or more of Aspects 1-20.
  • Aspect 24 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 1-20.
  • Aspect 25 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 1-20.
  • a device for wireless communication 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 1-20.
  • Aspect 27 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 1-20.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (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 contrôle des ressources radio (RRC) associée à un balayage de faisceau initié par UE. L'UE peut transmettre, au moins en partie sur la base de la configuration de RRC, une demande de balayage de faisceau initié par UE, la demande indiquant des informations de quasi-colocalisation (QCL) pour le balayage de faisceau initié par UE. L'UE peut recevoir une pluralité de signaux de référence, au moins en partie sur la base du balayage de faisceau initié par UE, le balayage de faisceau initié par UE étant un balayage de faisceau de point de transmission et de réception (TRP) unique (sTRP) initié par UE, un balayage de faisceau par TRP dans une opération multi-TRP (mTRP), ou un balayage de faisceau initié par UE pour une opération simultanée mTRP. De nombreux autres aspects sont décrits.
PCT/CN2024/070514 2024-01-04 2024-01-04 Balayage de faisceau initié par équipement utilisateur Pending WO2025145368A1 (fr)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190150133A1 (en) * 2017-11-10 2019-05-16 Apple Inc. UE Initiated Beam Management Procedure

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
US20190150133A1 (en) * 2017-11-10 2019-05-16 Apple Inc. UE Initiated Beam Management Procedure

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