WO2025043435A1 - Sélection d'indicateur de configuration de transmission unifiée - Google Patents

Sélection d'indicateur de configuration de transmission unifiée Download PDF

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Publication number
WO2025043435A1
WO2025043435A1 PCT/CN2023/115216 CN2023115216W WO2025043435A1 WO 2025043435 A1 WO2025043435 A1 WO 2025043435A1 CN 2023115216 W CN2023115216 W CN 2023115216W WO 2025043435 A1 WO2025043435 A1 WO 2025043435A1
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WIPO (PCT)
Prior art keywords
coreset
tci
mode
dci
tci state
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PCT/CN2023/115216
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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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Priority to PCT/CN2023/115216 priority Critical patent/WO2025043435A1/fr
Publication of WO2025043435A1 publication Critical patent/WO2025043435A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot 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
    • H04B7/022—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
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands

Definitions

  • aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for selecting Transmission Configuration Indicator (TCIs) for unified TCI based multiple transmission reception point (mTRP) operations.
  • TCIs Transmission Configuration Indicator
  • mTRP transmission reception point
  • Wireless communications systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts, or other similar types of services. These wireless communications systems may employ multiple-access technologies capable of supporting communications with multiple users by sharing available wireless communications system resources with those users.
  • One aspect provides a method for wireless communications at a user equipment (UE) .
  • the method includes receiving first signaling that activates multiple Transmission Configuration Indicator (TCI) states for at least a first control resource set (CORESET) and a second CORESET, wherein the UE is operating in a multiple transmitter receiver point (mTRP) mode that utilizes multiple downlink control information (DCI) scheduling; selecting a TCI state to apply to receive downlink control information (DCI) in at least one of the first CORESET or the second CORESET before receiving a DCI with a field indicating a TCI state for that CORESET; and processing DCI in the at least one of the first CORESET or the second CORESET using the selected TCI state.
  • TCI Transmission Configuration Indicator
  • CORESET control resource set
  • mTRP multiple transmitter receiver point
  • DCI downlink control information
  • the method includes transmitting first signaling that activates, for a user equipment (UE) operating in a multiple transmitter receiver point (mTRP) mode that utilizes multiple downlink control information (DCI) scheduling, multiple Transmission Configuration Indicator (TCI) states for at least a first control resource set (CORESET) and a second CORESET; selecting a TCI state to apply to transmit downlink control information (DCI) in at least one of the first CORESET or the second CORESET before transmitting a DCI with a field indicating a TCI state for that CORESET; and transmitting DCI in the at least one of the first CORESET or the second CORESET using the selected TCI state.
  • DCI downlink control information
  • TCI Transmission Configuration Indicator
  • the method includes receiving first signaling indicating a switch between a first transmission and reception point (TRP) mode and a second TRP mode; receiving second signaling indicating a Transmission Configuration Indicator (TCI) mode for an operating frequency; and processing a downlink transmission on the operating frequency in accordance with the TCI mode.
  • TRP transmission and reception point
  • TCI Transmission Configuration Indicator
  • an apparatus operable, configured, or otherwise adapted to perform any one or more of the aforementioned methods and/or those described elsewhere herein; a non-transitory, computer-readable media comprising instructions that, when executed by a processor of an apparatus, cause the apparatus to perform the aforementioned methods as well as those described elsewhere herein; a computer program product embodied on a computer-readable storage medium comprising code for performing the aforementioned methods as well as those described elsewhere herein; and/or an apparatus comprising means for performing the aforementioned methods as well as those described elsewhere herein.
  • an apparatus may comprise a processing system, a device with a processing system, or processing systems cooperating over one or more networks.
  • FIG. 1 depicts an example wireless communications network.
  • FIG. 2 depicts an example disaggregated base station architecture.
  • FIG. 3 depicts aspects of an example base station and an example user equipment.
  • FIGS. 4A, 4B, 4C, and 4D depict various example aspects of data structures for a wireless communications network.
  • FIG. 5 illustrates example single downlink control information (single-DCI) multi transmission reception point (multi-TRP) scenario.
  • FIG. 6 illustrates an example multi-DCI multi-TRP (mTRP) scenario.
  • FIG. 7 depicts an example scenario involving mTRP operation.
  • FIG. 8 depicts example resource allocations for an example scenario involving mTRP operation.
  • FIGs. 9A and 9B depict an example scenario involving mTRP operation.
  • FIG. 10 depicts an example timing diagram illustrating a Transmission Configuration Indicator (TCI) selection field.
  • TCI Transmission Configuration Indicator
  • FIG. 11 depicts an example diagram illustrating TCI selection, in accordance with certain aspects of the present disclosure.
  • FIG. 12 depicts a call flow diagram, in accordance with certain aspects of the present disclosure.
  • FIG. 13 depicts another call flow diagram, in accordance with certain aspects of the present disclosure.
  • FIG. 14 depicts an example diagram illustrating TCI activation signaling with dynamic TRP switching, in accordance with certain aspects of the present disclosure.
  • FIG. 15 depicts a method for wireless communications.
  • FIG. 16 depicts a method for wireless communications.
  • FIG. 17 depicts a method for wireless communications.
  • FIG. 18 depicts a method for wireless communications.
  • FIG. 19 depicts aspects of an example communications device.
  • the UE may be configured to monitor for a downlink control information (DCI) that includes a TCI selection field to indicate selection of at least one unified TCI state from a plurality of (e.g., activated) unified TCI states.
  • DCI downlink control information
  • the plurality of unified TCI states may be indicated, for example, by a MAC CE and the TCI selection field in a DCI may select one of the TCI states activated by the MAC CE.
  • a UE may be configured to determine which unified TCI state to apply based on at least one rule.
  • the mechanisms proposed herein may provide various advantages. For example, the mechanisms proposed herein may provide flexibility in expanding unified TCI framework to mTRP operation, providing enhanced performance with reduced signaling overhead. Enhanced performance may result from the techniques proposed herein allowing a UE and network to be in agreement on which TCI is being used to process a downlink transmission.
  • IP Internet protocol
  • UPF 195 which is connected to the IP Services 197, and which provides UE IP address allocation as well as other functions for 5GC 190.
  • IP Services 197 may include, for example, the Internet, an intranet, an IMS, a PS streaming service, and/or other IP services.
  • Each of the units may include one or more interfaces or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium.
  • Each of the units, or an associated processor or controller providing instructions to the communications interfaces of the units can be configured to communicate with one or more of the other units via the transmission medium.
  • the units can include a wired interface configured to receive or transmit signals over a wired transmission medium to one or more of the other units.
  • the CU 210 may host one or more higher layer control functions.
  • control functions can include radio resource control (RRC) , packet data convergence protocol (PDCP) , service data adaptation protocol (SDAP) , or the like.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • SDAP service data adaptation protocol
  • Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 210.
  • the CU 210 may be configured to handle user plane functionality (e.g., Central Unit –User Plane (CU-UP) ) , control plane functionality (e.g., Central Unit –Control Plane (CU-CP) ) , or a combination thereof.
  • the CU 210 can be logically split into one or more CU-UP units and one or more CU-CP units.
  • the CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as the E1 interface when implemented in an O-RAN configuration.
  • the CU 210 can be implemented to communicate with the DU 230, as necessary, for network control and signaling.
  • the DU 230 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 240.
  • the DU 230 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, or the like) depending, at least in part, on a functional split, such as those defined by the 3 rd Generation Partnership Project (3GPP) .
  • the DU 230 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 230, or with the control functions hosted by the CU 210.
  • Lower-layer functionality can be implemented by one or more RUs 240.
  • an RU 240 controlled by a DU 230, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower layer functional split.
  • the RU (s) 240 can be implemented to handle over the air (OTA) communications with one or more UEs 104.
  • OTA over the air
  • real-time and non-real-time aspects of control and user plane communications with the RU (s) 240 can be controlled by the corresponding DU 230.
  • this configuration can enable the DU (s) 230 and the CU 210 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
  • the SMO Framework 205 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements.
  • the SMO Framework 205 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements which may be managed via an operations and maintenance interface (such as an O1 interface) .
  • the SMO Framework 205 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 290) to perform network element 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) 290
  • network element life cycle management such as to instantiate virtualized network elements
  • a cloud computing platform interface such as an O2 interface
  • Such virtualized network elements can include, but are not limited to, CUs 210, DUs 230, RUs 240 and Near-RT RICs 225.
  • the SMO Framework 205 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 211, via an O1 interface. Additionally, in some implementations, the SMO Framework 205 can communicate directly with one or more RUs 240 via an O1 interface.
  • the SMO Framework 205 also may include a Non-RT RIC 215 configured to support functionality of the SMO Framework 205.
  • the Non-RT RIC 215 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, Artificial Intelligence/Machine Learning (AI/ML) workflows including model training and updates, or policy-based guidance of applications/features in the Near-RT RIC 225.
  • the Non-RT RIC 215 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 225.
  • the Near-RT RIC 225 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 210, one or more DUs 230, or both, as well as an O-eNB, with the Near-RT RIC 225.
  • the Non-RT RIC 215 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 225 and may be received at the SMO Framework 205 or the Non-RT RIC 215 from non-network data sources or from network functions. In some examples, the Non-RT RIC 215 or the Near-RT RIC 225 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 215 may monitor long-term trends and patterns for performance and employ AI/ML models to perform corrective actions through the SMO Framework 205 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies) .
  • SMO Framework 205 such as reconfiguration via O1
  • A1 policies such as A1 policies
  • FIG. 3 depicts aspects of an example BS 102 and a UE 104.
  • BS 102 includes various processors (e.g., 320, 330, 338, and 340) , antennas 334a-t (collectively 334) , transceivers 332a-t (collectively 332) , which include modulators and demodulators, and other aspects, which enable wireless transmission of data (e.g., data source 312) and wireless reception of data (e.g., data sink 339) .
  • BS 102 may send and receive data between BS 102 and UE 104.
  • BS 102 includes controller/processor 340, which may be configured to implement various functions described herein related to wireless communications.
  • UE 104 includes various processors (e.g., 358, 364, 366, and 380) , antennas 352a-r (collectively 352) , transceivers 354a-r (collectively 354) , which include modulators and demodulators, and other aspects, which enable wireless transmission of data (e.g., retrieved from data source 362) and wireless reception of data (e.g., provided to data sink 360) .
  • UE 104 includes controller/processor 380, which may be configured to implement various functions described herein related to wireless communications.
  • BS 102 includes a transmit processor 320 that may receive data from a data source 312 and control information from a controller/processor 340.
  • the control information may be for the physical broadcast channel (PBCH) , physical control format indicator channel (PCFICH) , physical HARQ indicator channel (PHICH) , physical downlink control channel (PDCCH) , group common PDCCH (GC PDCCH) , and/or others.
  • the data may be for the physical downlink shared channel (PDSCH) , in some examples.
  • Transmit processor 320 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. Transmit processor 320 may also generate reference symbols, such as for the primary synchronization signal (PSS) , secondary synchronization signal (SSS) , PBCH demodulation reference signal (DMRS) , and channel state information reference signal (CSI-RS) .
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • DMRS PBCH demodulation reference signal
  • CSI-RS channel state information reference signal
  • Transmit (TX) multiple-input multiple-output (MIMO) processor 330 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, and/or the reference symbols, if applicable, and may provide output symbol streams to the modulators (MODs) in transceivers 332a-332t.
  • Each modulator in transceivers 332a-332t may process a respective output symbol stream to obtain an output sample stream.
  • Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • Downlink signals from the modulators in transceivers 332a-332t may be transmitted via the antennas 334a-334t, respectively.
  • UE 104 In order to receive the downlink transmission, UE 104 includes antennas 352a-352r that may receive the downlink signals from the BS 102 and may provide received signals to the demodulators (DEMODs) in transceivers 354a-354r, respectively.
  • Each demodulator in transceivers 354a-354r may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples.
  • Each demodulator may further process the input samples to obtain received symbols.
  • MIMO detector 356 may obtain received symbols from all the demodulators in transceivers 354a-354r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • Receive processor 358 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 104 to a data sink 360, and provide decoded control information to a controller/processor 380.
  • UE 104 further includes a transmit processor 364 that may receive and process data (e.g., for the PUSCH) from a data source 362 and control information (e.g., for the physical uplink control channel (PUCCH) ) from the controller/processor 380. Transmit processor 364 may also generate reference symbols for a reference signal (e.g., for the sounding reference signal (SRS) ) . The symbols from the transmit processor 364 may be precoded by a TX MIMO processor 366 if applicable, further processed by the modulators in transceivers 354a-354r (e.g., for SC-FDM) , and transmitted to BS 102.
  • data e.g., for the PUSCH
  • control information e.g., for the physical uplink control channel (PUCCH)
  • Transmit processor 364 may also generate reference symbols for a reference signal (e.g., for the sounding reference signal (SRS) ) .
  • the symbols from the transmit processor 364 may
  • the uplink signals from UE 104 may be received by antennas 334a-t, processed by the demodulators in transceivers 332a-332t, detected by a MIMO detector 336 if applicable, and further processed by a receive processor 338 to obtain decoded data and control information sent by UE 104.
  • Receive processor 338 may provide the decoded data to a data sink 339 and the decoded control information to the controller/processor 340.
  • FIGS. 4A, 4B, 4C, and 4D depict aspects of data structures for a wireless communications network, such as wireless communications network 100 of FIG. 1.
  • the symbol length/duration is inversely related to the subcarrier spacing.
  • the slot duration is 0.25 ms
  • the subcarrier spacing is 60 kHz
  • the symbol duration is approximately 16.67 ⁇ s.
  • a primary synchronization signal may be within symbol 2 of particular subframes of a frame.
  • the PSS is used by a UE (e.g., 104 of FIGS. 1 and 3) to determine subframe/symbol timing and a physical layer identity.
  • the UE can determine a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the aforementioned DMRS.
  • the physical broadcast channel (PBCH) which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) /PBCH block.
  • the MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) .
  • the physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and/or paging messages.
  • SIBs system information blocks
  • Type 2 Separate DL common TCI state to indicate a common beam for more than one DL channel/RS;
  • Type 3 Separate UL common TCI state to indicate a common beam for more than one UL channel/RS;
  • Type 4 Separate DL single channel/RS TCI state to indicate a beam for a single DL channel/RS
  • Type 5 Separate UL single channel/RS TCI state to indicate a beam for a single UL channel/RS.
  • multi-TRP multi transmission reception point
  • single-DCI single downlink control information
  • multi-TRP transmissions are configured based on multiple DCIs (multi-DCI) .
  • the multi-TRP operation configured based on the single DCI communication is suited for deployments with an ideal backhaul or a backhaul with a small delay, and involves various transmission schemes.
  • the transmissions schemes include a spatial division multiplexing (SDM) scheme, a frequency division multiplexing (FDM) scheme, and/or a time division multiplexing (TDM) scheme.
  • transmissions from the first TRP and the second TRP have a same rank and a same code word (CW) , but with different FDRAs across the first TRP and the second TRP.
  • CW code word
  • transmissions from the first TRP and the second TRP have a same rank and a same CW, but with different TDRAs across the first TRP and the second TRP.
  • the PDSCH to a user equipment is sent in multiple parts.
  • the first TRP sends a first part of the PDSCH (e.g., on the first set of layers with a first set of FDRA and a first set of TDRA) to the UE and the second TRP sends a second part of the PDSCH (e.g., on a second set of layers with a second set of FDRA and a second set of TDRA) to the UE.
  • each DCI schedules an individual PDSCH in a multi-TRP multi-DCI scenario.
  • a first DCI e.g., DCI 1 from a first TRP (e.g., TRP 1) (e.g., transmitted in a first PDCCH) schedules a first PSDCH (e.g., PDSCH 1) from the first TRP
  • a second DCI e.g., DCI 2 from a second TRP (e.g., TRP 2)
  • a second PSDCH e.g., PDSCH 2
  • the two scheduled PDSCHs may be overlapped, non-overlapped, or partially overlapped in a frequency domain or a time domain.
  • the unified TCI framework may be extended to multiple TRP (mTRP) operation.
  • different TCI states may be applied for transmissions to and from the different TRPs.
  • scenario 700 of FIG. 7 depicts a multi-TRP scenario in which a UE communicates with a first TRP (TRP A) using a first TCI state and with a second TRP (TRP B) using a second TCI state.
  • TDM time division multiplexing
  • the TRPs may use TDM with cyclic mapping or sequential mapping.
  • Scenario 800 of FIG. 8 depicts example resource allocations for the multi-TRP scenario illustrated in FIG. 7.
  • FIG. 8 illustrates an example of how a single DCI (S-DCI) for multi-TRP PDSCH may be used for different multiplexing modes. These mode may include spatial division multiplexing (SDM) where overlapping time/frequency resources may be used to communicate with different TRPs but with spatial filtering, frequency division multiplexing (FDM) in which different frequency resources are used to communicate with different TRPs, or TDM in which different time resources are used to communicate with different TRPs.
  • SDM spatial division multiplexing
  • FDM frequency division multiplexing
  • FIG. 8 also illustrates that a multiple DCI (mDCI) for multi-TRP PDSCH may indicate different resources, which may include resources for demodulation reference signals (DMRS) .
  • DMRS demodulation reference signals
  • FIG. 9A illustrates how TDM may be used for physical uplink control channel (PUCCH) repetition.
  • FIG. 9B further illustrates how a single frequency network (SFN) may use SDM for physical uplink shared channel (PUSCH) and/or PUCCH.
  • SFN single frequency network
  • TCI states may be applied for transmissions to and from different TRPs.
  • a UE may not know what unified TCI state to apply when processing a downlink transmission from a TRP.
  • aspects of the present disclosure provide mechanisms that help resolve such ambiguity and extend unified TCI framework for indication of multiple downlink and uplink TCI states in various scenarios. These mechanisms may be especially useful in multiple transmission reception point (TRP) scenarios.
  • TRP transmission reception point
  • certain DCI formats may include a TCI selection field TCI selection field to indicate which unified TCI state a UE is to apply to which TRP transmission.
  • TCI selection field may be configured by RRC to be present in a DCI format 1_1 and/or DCI format 1_2 that schedules/activates physical downlink shared channel (PDSCH) reception (e.g., including dynamic PDSCH and semi-persistent scheduling (SPS) PDSCH) according to certain criteria.
  • PDSCH physical downlink shared channel
  • the selection field may include a 2-bit codepoint that indicates which unified TCI state a UE is to apply. For example, in some cases, if the TCI selection field indicates codepoint "00" , the UE may apply the first one of two indicated joint/DL TCI states to all PDSCH demodulation reference signal (DMRS) port (s) of corresponding PDSCH transmission occasions (s) scheduled/activated by the DCI.
  • DMRS demodulation reference signal
  • TCI selection field indicates codepoint "01”
  • 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/activated by the DCI.
  • the TCI selection field indicates codepoint "10”
  • the UE may apply both indicated joint/DL TCI states to the PDSCH reception scheduled/activated by the DCI format.
  • the codepoint "11" of the TCI selection field may be unused, or may be reserved to indicate certain functionality or information.
  • FIG. 10 depicts an example timing diagram 1000, illustrating operations involving a TCI selection field.
  • a network entity may transmit, to a UE, DCI indicating 2 unified TCIs.
  • the UE may transmit an acknowledgement (ACK) of the DCI, as shown at 1004.
  • the gNB may then transmit a DCI of a certain format (e.g., DCI 1_1 or DCI 1_2) which may include a TCI selection field. If present, the TCI selection field may indicate to use one or two of the TCI states (indicated at 1002) for a scheduled PDSCH transmission.
  • the gNB may transmit the PDSCH using the one or two of the indicated TCI, in accordance with the TCI selection field.
  • the UE may process the PDSCH transmission PDSCH using the one or two of the TCIs, as indicated in the TCI selection field.
  • the UE may transmit ACK information in response to the PDSCH transmission, as illustrated at 1010.
  • the presence of the TCI selection field in a DL DCI may be RRC-configured (e.g., in scenarios involving a unified TCI framework for mTRP operation) . This may help the UE know when it should monitor for a DCI format that contains a TCI selection field.
  • this initial downlink transmission may be a DCI containing the TCI selection field.
  • FIG. 11 depicts an example diagram illustrating TCI indication downlink control information (DCI) .
  • DCI downlink control information
  • MAC CEs may be used to activate multiple TCI states for each control resource set (CORESET) associated with each TRP.
  • CORESET control resource set
  • a network entity e.g., a gNB
  • MAC medium access control
  • CE control element
  • the network entity may use DCI (e.g., a TCI Indication DCI) from a particular CORESET pool index to select a single TCI (e.g., from the X activated TCIs) for that CORESET pool index.
  • DCI e.g., a TCI Indication DCI
  • the selected TCI state may be used for the associated CORESET and PDCCH/PDSCH transmissions, illustrated at 1106 and 1156.
  • TCI Indication DCI e.g., especially when a previous TCI has not been used for that TRP.
  • TCI state to use for the initial DCI that includes the TCI selection field e.g., the DCIs at 1104 and/or 1154.
  • FIG. 12 depicts a call flow diagram 1200, in accordance with certain aspects of the present disclosure.
  • the UE shown in FIG. 12 may be an example of the UE 104 depicted and described with respect to FIG. 1 and 3.
  • the network entity shown in FIG. 12 may be an example of the BS 102 (e.g., a gNB) depicted and described with respect to FIG. 1 and 3 or a disaggregated base station depicted and described with respect to FIG. 2.
  • the UE may receive, from a network entity (e.g., a base station which may include multiple TRPs illustrated as TRP1 and TRP2) , signaling that activates multiple TCI states for at least a first CORESET and a second CORESET.
  • a network entity e.g., a base station which may include multiple TRPs illustrated as TRP1 and TRP2
  • the UE may receive, from a network entity (e.g., a base station which may include multiple TRPs illustrated as TRP1 and TRP2) , signaling that activates multiple TCI states for at least a first CORESET and a second CORESET.
  • a network entity e.g., a base station which may include multiple TRPs illustrated as TRP1 and TRP2
  • the UE may receive, from a network entity (e.g., a base station which may include multiple TRPs illustrated as TRP1 and TRP2) , signaling that activates multiple TCI states for at least a first CORE
  • the UE may select a TCI state to apply to receive DCI in at least one of the first CORESET or the second CORESET, before receiving a DCI with a field indicating a TCI state for that CORESET.
  • the UE may apply the selected TCI state to receive a DCI including a TCI selection field, in at least one of the first CORESET or the second CORESET.
  • the UE may process a PDSCH using the TCI state indicated in the TCI selection field of the DCI.
  • the exact rule or rule used to determine what TCI state to use for an initial DCI transmission after TCI state activation (but before TCI selection) may vary.
  • an initial TCI indication (e.g., indicating a unified TCI framework for mTRP operations) may be provided for a new TRP, at the start of mDCI mTRP unified TCI mode operations.
  • such an initial TCI indication may be provided after initial access, and the initial TCI indication may indicate the TCI for a first TRP (e.g., before a second TRP is added) .
  • such an initial TCI indication may be provided after switching to an mDCI mTRP unified TCI mode from an sDCI sTRP unified TCI mode (e.g., before a second TRP is added) .
  • a TCI selection rule may be defined at least for a CORESET pool index before any TCI indication takes effects.
  • such a TCI selection rule may specify that the first activated TCI or the activated TCI having a lowest ID for the CORESET pool index is to be applied until any TCI indicated for the CORESET pool index takes effect.
  • a DCI from one CORESET pool index may indicate a TCI for the other CORESET pool index.
  • the TRP of a first CORESET pool index may use the TCI of another (e.g., a second) CORESET pool index until any TCI indicated for the first CORESET pool index takes effect.
  • TCI mode there may be some ambiguity on what TCI mode to apply for an operation frequency (e.g., a component carrier (CC) or bandwidth part (BWP) ) on a switch between a first TRP mode and a second TRP mode.
  • an operation frequency e.g., a component carrier (CC) or bandwidth part (BWP)
  • CC component carrier
  • BWP bandwidth part
  • FIG. 13 depicts a call flow diagram 1300 with dynamic switching between TRP modes, in accordance with certain aspects of the present disclosure.
  • a network entity e.g., a base station which may include multiple TRPs illustrated as TRP1 and TRP2
  • TRP1 and TRP2 may transmit a TRP mode switch indication, indicating a switch between a first TRP mode and second TRP mode.
  • a UE may switch between the first TRP mode and the second TRP mode based on the TRP mode switch indication.
  • the network entity may transmit a MAC-CE indicating a TCI mode for an operating frequency.
  • the UE may process a downlink transmission from the network entity on the operating frequency and in accordance with the TCI mode.
  • a UE may switch between an sTRP mode and an sDCI based mTRP unified TCI mode (e.g., an mTRP mode that that utilizes multiple downlink control information (DCI) scheduling) .
  • a switch may be based on signaling from a network entity.
  • a field in a TCI state activation command may be used.
  • a MAC-CE conveying such a command may (e.g., explicitly) indicate that an operating frequency (e.g., a component carrier (CC) and/or bandwidth part (BWP) is operating (e.g., or is to operate) in a unified TCI framework for an sTRP unified TCI mode or a unified TCI framework extension for an s-DCI based mTRP mode (e.g., an mTRP mode that utilizes single DCI scheduling) .
  • an operating frequency e.g., a component carrier (CC) and/or bandwidth part (BWP) is operating (e.g., or is to operate) in a unified TCI framework for an sTRP unified TCI mode or a unified TCI framework extension for an s-DCI based mTRP mode (e.g., an mTRP mode that utilizes single DCI scheduling) .
  • CC component
  • TCI activation signaling that indicates dynamic TRP switching.
  • a TCI activation MAC-CE may include a field for dynamic TRP switching that indicates a switch to an mTRP mode.
  • a UE may switch (based on the MAC-CE) to an s-DCI based mTRP mode, and may process/receive a downlink transmission (e.g., a PDSCH) using that mode (e.g., on an associated operating frequency) .
  • a downlink transmission e.g., a PDSCH
  • a TCI activation MAC-CE may include a field for dynamic TRP switching that indicates a switch to an sTRP mode.
  • a UE may switch (based on the MAC-CE) to an sTRP mode, and may process/receive a downlink transmission (e.g., a PDSCH) using that sTRP mode (e.g., on an associated operating frequency) .
  • a downlink transmission e.g., a PDSCH
  • sTRP mode e.g., on an associated operating frequency
  • RRC radio resource control
  • a field in radio resource control (RRC) signaling may (e.g., explicitly) indicate that a CC and/or BWP is operating (e.g., or is to operate) in a unified TCI framework for an sTRP unified TCI mode or a unified TCI framework extension for an s-DCI based mTRP mode (e.g., an mTRP mode that utilizes single DCI scheduling) .
  • RRC radio resource control
  • a UE may be RRC configured with unified TCI states (e.g., via dl-OrJointTCI-StateList or TCI-UL-State) .
  • the UE may determine that an operating frequency (e.g., CC/BWP) is operated in a dynamic TRP mode switch for S-DCI based MTRP if a TCI state activation command (such as e Rel-18 TCI activation MAC-CE) in which at least one activated TCI codepoint is mapped with both first and second unified (joint/DL/UL) TCI states is received and applied to the CC/BWP.
  • a TCI state activation command such as e Rel-18 TCI activation MAC-CE
  • a UE may determine that an operating frequency (e.g., a CC/BWP) is operated in single TRP only mode if an TCI state activation command (Rel-18 TCI activation MAC-CE MAC-CE) in which all activated TCI codepoint (s) is mapped with either only the first joint/DL/UL TCI state (s) or only the second joint/DL/UL TCI state (s) is received and applied to the CC/BWP.
  • an operating frequency e.g., a CC/BWP
  • an operating frequency e.g., a CC/BWP
  • FIG. 15 shows an example of a method 1500 of wireless communications at a user equipment (UE) , such as a UE 104 of FIGS. 1 and 3.
  • UE user equipment
  • Method 1500 begins at step 1505 with receiving first signaling that activates multiple Transmission Configuration Indicator (TCI) states for at least a first control resource set (CORESET) and a second CORESET, wherein the UE is operating in a multiple transmitter receiver point (mTRP) mode that utilizes multiple downlink control information (DCI) scheduling.
  • TCI Transmission Configuration Indicator
  • CORESET first control resource set
  • mTRP multiple transmitter receiver point
  • DCI downlink control information
  • Method 1500 then proceeds to step 1510 with selecting a TCI state to apply to receive downlink control information (DCI) in at least one of the first CORESET or the second CORESET before receiving a DCI with a field indicating a TCI state for that CORESET.
  • DCI downlink control information
  • the operations of this step refer to, or may be performed by, circuitry for selecting and/or code for selecting as described with reference to FIG. 19.
  • Method 1500 then proceeds to step 1515 with processing DCI in the at least one of the first CORESET or the second CORESET using the selected TCI state.
  • the operations of this step refer to, or may be performed by, circuitry for processing and/or code for processing as described with reference to FIG. 19.
  • the selecting comprises selecting, for the second CORESET, a TCI state, from the multiple TCI states, indicated for the first CORESET.
  • the method 1500 further includes receiving second signaling indicating the UE to switch from a single TRP (sTRP) mode to the mTRP mode.
  • sTRP single TRP
  • the operations of this step refer to, or may be performed by, circuitry for receiving and/or code for receiving as described with reference to FIG. 19.
  • the method 1500 further includes switching from the sTRP mode to the mTRP mode, based on the second signaling.
  • the operations of this step refer to, or may be performed by, circuitry for switching and/or code for switching as described with reference to FIG. 19.
  • the selection is based on a selection rule.
  • the selection rule dictates use of a first activated TCI state or an activated TCI state of a lowest ID for a CORESET pool index.
  • the selecting comprises selecting, for the second CORESET, a TCI state, from the multiple TCI states, indicated in a DCI received in the first CORESET.
  • the TCI state indicated in a DCI received in the first CORESET is used for the second CORESET until a TCI state indicated for the second CORESET takes effect.
  • the first signaling comprises: a first medium access control (MAC) control element (CE) that activates a single TCI state for at least the first CORESET; and the selecting comprises selecting the single TCI state for at least the first CORESET.
  • MAC medium access control
  • CE control element
  • the single TCI state is used for the first CORESET until a TCI state indicated for the first CORESET takes effect.
  • method 1500 may be performed by an apparatus, such as communications device 1900 of FIG. 19, which includes various components operable, configured, or adapted to perform the method 1500.
  • Communications device 1900 is described below in further detail.
  • FIG. 15 is just one example of a method, and other methods including fewer, additional, or alternative steps are possible consistent with this disclosure.
  • FIG. 16 shows an example of a method 1600 of wireless communications at a network entity, such as a BS 102 of FIGS. 1 and 3, or a disaggregated base station as discussed with respect to FIG. 2.
  • a network entity such as a BS 102 of FIGS. 1 and 3, or a disaggregated base station as discussed with respect to FIG. 2.
  • Method 1600 begins at step 1605 with transmitting first signaling that activates, for a user equipment (UE) operating in a multiple transmitter receiver point (mTRP) mode that utilizes multiple downlink control information (DCI) scheduling, multiple Transmission Configuration Indicator (TCI) states for at least a first control resource set (CORESET) and a second CORESET.
  • UE user equipment
  • mTRP multiple transmitter receiver point
  • DCI downlink control information
  • TCI Transmission Configuration Indicator
  • CORESET first control resource set
  • second CORESET a second CORESET.
  • Method 1600 then proceeds to step 1610 with selecting a TCI state to apply to transmit downlink control information (DCI) in at least one of the first CORESET or the second CORESET before transmitting a DCI with a field indicating a TCI state for that CORESET.
  • DCI downlink control information
  • the operations of this step refer to, or may be performed by, circuitry for selecting and/or code for selecting as described with reference to FIG. 19.
  • Method 1600 then proceeds to step 1615 with transmitting DCI in the at least one of the first CORESET or the second CORESET using the selected TCI state.
  • the operations of this step refer to, or may be performed by, circuitry for transmitting and/or code for transmitting as described with reference to FIG. 19.
  • the selecting comprises selecting, for the second CORESET, a TCI state, from the multiple TCI states, indicated for the first CORESET.
  • the method 1600 further includes transmitting second signaling indicating the UE to switch from a single TRP (sTRP) mode to the mTRP mode.
  • sTRP single TRP
  • the operations of this step refer to, or may be performed by, circuitry for transmitting and/or code for transmitting as described with reference to FIG. 19.
  • the selection is based on a selection rule.
  • the selection rule dictates use of a first activated TCI state or an activated TCI state of a lowest ID for a CORESET pool index.
  • the selecting comprises selecting, for the second CORESET, a TCI state, from the multiple TCI states, indicated in a DCI transmitted in the first CORESET.
  • the TCI state indicated in a DCI transmitted in the first CORESET is used for the second CORESET until a TCI state indicated for the second CORESET takes effect.
  • the first signaling comprises: a first medium access control (MAC) control element (CE) that activates a single TCI state for at least the first CORESET; and the selecting comprises selecting the single TCI state for at least the first CORESET.
  • MAC medium access control
  • CE control element
  • the single TCI state is used for the first CORESET until a TCI state indicated for the first CORESET takes effect.
  • method 1600 may be performed by an apparatus, such as communications device 1900 of FIG. 19, which includes various components operable, configured, or adapted to perform the method 1600.
  • Communications device 1900 is described below in further detail.
  • FIG. 16 is just one example of a method, and other methods including fewer, additional, or alternative steps are possible consistent with this disclosure.
  • FIG. 17 shows an example of a method 1700 of wireless communications at a user equipment (UE) , such as a UE 104 of FIGS. 1 and 3.
  • UE user equipment
  • Method 1700 begins at step 1705 with receiving first signaling indicating a switch between a first transmission and reception point (TRP) mode and a second TRP mode.
  • TRP transmission and reception point
  • the operations of this step refer to, or may be performed by, circuitry for receiving and/or code for receiving as described with reference to FIG. 19.
  • Method 1700 then proceeds to step 1710 with receiving second signaling indicating a Transmission Configuration Indicator (TCI) mode for an operating frequency.
  • TCI Transmission Configuration Indicator
  • the operations of this step refer to, or may be performed by, circuitry for receiving and/or code for receiving as described with reference to FIG. 19.
  • Method 1700 then proceeds to step 1715 with processing a downlink transmission on the operating frequency in accordance with the TCI mode.
  • the operations of this step refer to, or may be performed by, circuitry for processing and/or code for processing as described with reference to FIG. 19.
  • the operating frequency comprises at least one of a component carrier (CC) or a bandwidth part (BWP) .
  • CC component carrier
  • BWP bandwidth part
  • the first TRP mode comprises a single TRP (sTRP) mode
  • the second TRP mode comprises a multiple TRP (mTRP) mode that utilizes single downlink control information (DCI) scheduling.
  • sTRP single TRP
  • mTRP multiple TRP
  • the second signaling indicates whether the operating frequency is operating in a unified TCI framework for the sTRP mode or a unified TCI framework extension for the mTRP mode that utilizes single DCI scheduling.
  • the second signaling comprises radio resource control (RRC) signaling.
  • RRC radio resource control
  • the method 1700 further includes switching between the first TRP mode and the second TRP mode, based on the first signaling.
  • the operations of this step refer to, or may be performed by, circuitry for switching and/or code for switching as described with reference to FIG. 19.
  • method 1700 may be performed by an apparatus, such as communications device 1900 of FIG. 19, which includes various components operable, configured, or adapted to perform the method 1700.
  • Communications device 1900 is described below in further detail.
  • method 1800 may be performed by an apparatus, such as communications device 1900 of FIG. 19, which includes various components operable, configured, or adapted to perform the method 1800.
  • Communications device 1900 is described below in further detail.
  • the computer-readable medium/memory 1940 is configured to store instructions (e.g., computer-executable code) that when executed by the one or more processors 1910, cause the one or more processors 1910 to perform the method 1500 described with respect to FIG. 15, or any aspect related to it; the method 1600 described with respect to FIG. 16, or any aspect related to it; the method 1700 described with respect to FIG. 17, or any aspect related to it; and the method 1800 described with respect to FIG. 18, or any aspect related to it.
  • instructions e.g., computer-executable code
  • computer-readable medium/memory 1940 stores code (e.g., executable instructions) , such as code for receiving 1945, code for selecting 1950, code for processing 1955, code for switching 1960, and code for transmitting 1965.
  • code e.g., executable instructions
  • Processing of the code for receiving 1945, code for selecting 1950, code for processing 1955, code for switching 1960, and code for transmitting 1965 may cause the communications device 1900 to perform the method 1500 described with respect to FIG. 15, or any aspect related to it; the method 1600 described with respect to FIG. 16, or any aspect related to it; the method 1700 described with respect to FIG. 17, or any aspect related to it; and the method 1800 described with respect to FIG. 18, or any aspect related to it.
  • the one or more processors 1910 include circuitry configured to implement (e.g., execute) the code stored in the computer-readable medium/memory 1940, including circuitry for receiving 1915, circuitry for selecting 1920, circuitry for processing 1925, circuitry for switching 1930, and circuitry for transmitting 1935. Processing with circuitry for receiving 1915, circuitry for selecting 1920, circuitry for processing 1925, circuitry for switching 1930, and circuitry for transmitting 1935 may cause the communications device 1900 to perform the method 1500 described with respect to FIG. 15, or any aspect related to it; the method 1600 described with respect to FIG. 16, or any aspect related to it; the method 1700 described with respect to FIG. 17, or any aspect related to it; and the method 1800 described with respect to FIG. 18, or any aspect related to it.
  • Means for receiving or obtaining may include transceivers 354 and/or antenna (s) 352 of the UE 104 illustrated in FIG. 3, transceivers 332 and/or antenna (s) 334 of the BS 102 illustrated in FIG. 3, and/or the transceiver 1975 and the antenna 1980 of the communications device 1900 in FIG. 19.
  • a method for wireless communications at a user equipment comprising: receiving first signaling that activates multiple Transmission Configuration Indicator (TCI) states for at least a first control resource set (CORESET) and a second CORESET, wherein the UE is operating in a multiple transmitter receiver point (mTRP) mode that utilizes multiple downlink control information (DCI) scheduling; selecting a TCI state to apply to receive downlink control information (DCI) in at least one of the first CORESET or the second CORESET before receiving a DCI with a field indicating a TCI state for that CORESET; and processing DCI in the at least one of the first CORESET or the second CORESET using the selected TCI state.
  • TCI Transmission Configuration Indicator
  • CORESET control resource set
  • mTRP multiple transmitter receiver point
  • DCI downlink control information
  • Clause 2 The method of Clause 1, wherein the selecting comprises selecting, for the second CORESET, a TCI state, from the multiple TCI states, indicated for the first CORESET.
  • Clause 3 The method of any one of Clauses 1-2, further comprising: receiving second signaling indicating the UE to switch from a single TRP (sTRP) mode to the mTRP mode; and switching from the sTRP mode to the mTRP mode, based on the second signaling.
  • sTRP single TRP
  • Clause 4 The method of Clause 3, wherein the selection is based on a selection rule.
  • Clause 5 The method of Clause 4, wherein the selection rule dictates use of a first activated TCI state or an activated TCI state of a lowest ID for a CORESET pool index.
  • Clause 6 The method of Clause 3, wherein the selecting comprises selecting, for the second CORESET, a TCI state, from the multiple TCI states, indicated in a DCI received in the first CORESET.
  • Clause 7 The method of Clause 6, wherein the TCI state indicated in a DCI received in the first CORESET is used for the second CORESET until a TCI state indicated for the second CORESET takes effect.
  • Clause 8 The method of Clause 3, wherein the first signaling comprises: a first medium access control (MAC) control element (CE) that activates a single TCI state for at least the first CORESET; and the selecting comprises selecting the single TCI state for at least the first CORESET.
  • MAC medium access control
  • CE control element
  • Clause 9 The method of Clause 8, wherein the single TCI state is used for the first CORESET until a TCI state indicated for the first CORESET takes effect.
  • a method for wireless communications at a network entity comprising: transmitting first signaling that activates, for a user equipment (UE) operating in a multiple transmitter receiver point (mTRP) mode that utilizes multiple downlink control information (DCI) scheduling, multiple Transmission Configuration Indicator (TCI) states for at least a first control resource set (CORESET) and a second CORESET; selecting a TCI state to apply to transmit downlink control information (DCI) in at least one of the first CORESET or the second CORESET before transmitting a DCI with a field indicating a TCI state for that CORESET; and transmitting DCI in the at least one of the first CORESET or the second CORESET using the selected TCI state.
  • DCI downlink control information
  • TCI Transmission Configuration Indicator
  • Clause 11 The method of Clause 10, wherein the selecting comprises selecting, for the second CORESET, a TCI state, from the multiple TCI states, indicated for the first CORESET.
  • Clause 12 The method of any one of Clauses 10-11, further comprising: transmitting second signaling indicating the UE to switch from a single TRP (sTRP) mode to the mTRP mode.
  • sTRP single TRP
  • Clause 13 The method of Clause 12, wherein the selection is based on a selection rule.
  • Clause 14 The method of Clause 13, wherein the selection rule dictates use of a first activated TCI state or an activated TCI state of a lowest ID for a CORESET pool index.
  • Clause 15 The method of Clause 12, wherein the selecting comprises selecting, for the second CORESET, a TCI state, from the multiple TCI states, indicated in a DCI transmitted in the first CORESET.
  • Clause 16 The method of Clause 15, wherein the TCI state indicated in a DCI transmitted in the first CORESET is used for the second CORESET until a TCI state indicated for the second CORESET takes effect.
  • Clause 17 The method of Clause 12, wherein the first signaling comprises: a first medium access control (MAC) control element (CE) that activates a single TCI state for at least the first CORESET; and the selecting comprises selecting the single TCI state for at least the first CORESET.
  • MAC medium access control
  • CE control element
  • Clause 18 The method of Clause 17, wherein the single TCI state is used for the first CORESET until a TCI state indicated for the first CORESET takes effect.
  • a method for wireless communications at a user equipment comprising: receiving first signaling indicating a switch between a first transmission and reception point (TRP) mode and a second TRP mode; receiving second signaling indicating a Transmission Configuration Indicator (TCI) mode for an operating frequency; and processing a downlink transmission on the operating frequency in accordance with the TCI mode.
  • TRP transmission and reception point
  • TCI Transmission Configuration Indicator
  • Clause 20 The method of Clause 19, wherein the operating frequency comprises at least one of a component carrier (CC) or a bandwidth part (BWP) .
  • CC component carrier
  • BWP bandwidth part
  • Clause 21 The method of any one of Clauses 19-20, wherein: the first TRP mode comprises a single TRP (sTRP) mode; and the second TRP mode comprises a multiple TRP (mTRP) mode that utilizes single downlink control information (DCI) scheduling.
  • sTRP single TRP
  • mTRP multiple TRP
  • Clause 22 The method of Clause 21, wherein the second signaling indicates whether the operating frequency is operating in a unified TCI framework for the sTRP mode or a unified TCI framework extension for the mTRP mode that utilizes single DCI scheduling.
  • Clause 23 The method of any one of Clauses 19-22, wherein the second signaling comprises a field in a TCI state activation command.
  • Clause 24 The method of any one of Clauses 19-23, wherein the second signaling comprises radio resource control (RRC) signaling.
  • RRC radio resource control
  • Clause 25 The method of any one of Clauses 19-24, further comprising switching between the first TRP mode and the second TRP mode, based on the first signaling.
  • a method for wireless communications at a network entity comprising: transmitting first signaling indicating for a user equipment (UE) to switch between a first transmission and reception point (TRP) mode and a second TRP mode; transmitting second signaling indicating a Transmission Configuration Indicator (TCI) mode for an operating frequency; and transmitting a downlink transmission on the operating frequency in accordance with the TCI mode.
  • UE user equipment
  • TRP transmission and reception point
  • TCI Transmission Configuration Indicator
  • Clause 27 The method of Clause 26, wherein the operating frequency comprises at least one of a component carrier (CC) or a bandwidth part (BWP) .
  • CC component carrier
  • BWP bandwidth part
  • Clause 28 The method of any one of Clauses 26-27, wherein: the first TRP mode comprises a single TRP (sTRP) mode; and the second TRP mode comprises a multiple TRP (mTRP) mode that utilizes single downlink control information (DCI) scheduling.
  • sTRP single TRP
  • mTRP multiple TRP
  • Clause 29 The method of Clause 28, wherein the second signaling indicates whether the operating frequency is operating in a unified TCI framework for the sTRP mode or a unified TCI framework extension for the mTRP mode that utilizes single DCI scheduling.
  • Clause 30 The method of any one of Clauses 26-29, wherein the second signaling comprises a field in a TCI state activation command.
  • Clause 31 The method of any one of Clauses 26-30, wherein the second signaling comprises radio resource control (RRC) signaling.
  • RRC radio resource control
  • Clause 32 An apparatus, comprising: a memory comprising executable instructions; and a processor configured to execute the executable instructions and cause the apparatus to perform a method in accordance with any one of Clauses 1-31.
  • Clause 33 An apparatus, comprising means for performing a method in accordance with any one of Clauses 1-31.
  • Clause 34 A non-transitory computer-readable medium comprising executable instructions that, when executed by a processor of an apparatus, cause the apparatus to perform a method in accordance with any one of Clauses 1-31.
  • Clause 35 A computer program product embodied on a computer-readable storage medium comprising code for performing a method in accordance with any one of Clauses 1-31.
  • an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein.
  • the scope of the disclosure is intended to cover such an apparatus or method that is practiced using other structure, functionality, or structure and functionality in addition to, or other than, the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • PLD programmable logic device
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC) , or any other such configuration.
  • SoC system on a chip
  • 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 (e.g., 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, and c-c-c or any other ordering of a, b, and c) .
  • determining encompasses a wide variety of actions. For example, “determining” may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” may include receiving (e.g., receiving information) , accessing (e.g., accessing data in a memory) and the like. Also, “determining” may include resolving, selecting, choosing, establishing and the like.
  • the methods disclosed herein comprise one or more actions for achieving the methods.
  • the method actions may be interchanged with one another without departing from the scope of the claims.
  • the order and/or use of specific actions may be modified without departing from the scope of the claims.
  • the various operations of methods described above may be performed by any suitable means capable of performing the corresponding functions.
  • the means may include various hardware and/or software component (s) and/or module (s) , including, but not limited to a circuit, an application specific integrated circuit (ASIC) , or processor.
  • ASIC application specific integrated circuit

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Abstract

Certains aspects de la présente divulgation concernent des techniques de sélection d'indicateurs de configuration de transmission (TCI) pour des opérations à multiples points d'émission et de réception (mTRP) basées sur TCI unifiés. Un procédé donné à titre d'exemple, mis en œuvre au niveau d'un équipement utilisateur (UE), consiste à : recevoir une première signalisation qui active de multiples états TCI pour au moins un premier ensemble de ressources de commande (CORESET) et un second CORESET, l'UE fonctionnant dans un mode mTRP qui utilise une planification de multiples informations de commande de liaison descendante (DCI) ; sélectionner un état TCI à appliquer pour recevoir des DCI dans le premier CORESET et/ou le second CORESET avant de recevoir des DCI avec un champ indiquant un état TCI pour ce CORESET ; et traiter des DCI dans le premier CORESET et/ou le second CORESET à l'aide de l'état TCI sélectionné.
PCT/CN2023/115216 2023-08-28 2023-08-28 Sélection d'indicateur de configuration de transmission unifiée Pending WO2025043435A1 (fr)

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