WO2026036403A1 - Économie d'énergie d'équipement utilisateur pour détection de canal physique de commande de liaison descendante - Google Patents

Économie d'énergie d'équipement utilisateur pour détection de canal physique de commande de liaison descendante

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Publication number
WO2026036403A1
WO2026036403A1 PCT/CN2024/112896 CN2024112896W WO2026036403A1 WO 2026036403 A1 WO2026036403 A1 WO 2026036403A1 CN 2024112896 W CN2024112896 W CN 2024112896W WO 2026036403 A1 WO2026036403 A1 WO 2026036403A1
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WO
WIPO (PCT)
Prior art keywords
pdcch
channel
indication
pcich
transmission
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/CN2024/112896
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English (en)
Inventor
Yushu Zhang
Kao-Peng Chou
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Google LLC
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Google LLC
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Publication date
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Priority to PCT/CN2024/112896 priority Critical patent/WO2026036403A1/fr
Publication of WO2026036403A1 publication Critical patent/WO2026036403A1/fr
Pending legal-status Critical Current
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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • 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
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal where the received signal is a power saving command
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present disclosure relates generally to wireless communication, and more particularly, to physical downlink control channel (PDCCH) detection.
  • PDCCH physical downlink control channel
  • the Third Generation Partnership Project (3GPP) specifies a radio interface referred to as fifth generation (5G) new radio (NR) (5G NR) .
  • An architecture for a 5G NR wireless communication system includes a 5G core (5GC) network, a 5G radio access network (5G-RAN) , a user equipment (5G UE) , etc.
  • the 5G NR architecture seeks to provide increased data rates, decreased latency, and/or increased capacity compared to prior generation cellular communication systems.
  • Wireless communication systems in general, provide various telecommunication services (e.g., telephony, video, data, messaging, etc. ) based on multiple-access technologies, such as orthogonal frequency division multiple access (OFDMA) technologies, that support communication with multiple UEs. Improvements in mobile broadband continue the progression of such wireless communication technologies. For example, it is important for a user equipment (UE) to save power in PDCCH) detection.
  • OFDMA orthogonal frequency division multiple access
  • a network entity transmits the PDCCH at time and frequency domain resources configured by a search space (SS) and its associated control resource set (CORESET) .
  • the NE configures the time-domain (TD) resource by the SS and frequency-domain (FD) resource by the CORESET.
  • TD time-domain
  • FD frequency-domain
  • a UE may identify one or multiple PDCCH candidates. Since the UE does not know which PDCCH candidates will be used for PDCCH transmission, the UE performs blind detection for all the PDCCH candidates to receive the PDCCH. Such blind detection could cause high UE power consumption.
  • the present disclosure addresses the above-noted and other deficiencies by dynamically indicating PDCCH location to reduce the number of blind detections and generating a signal for a downlink (DL) channel to provide such dynamic indication for UE power saving.
  • the NE configures the time and/or frequency domain resource for the DL channel for carrying the PDCCH indication.
  • the NE may also configure at least one SS for the PDCCH, and optionally configures at least one of the following for the DL channel for carrying the PDCCH indication: radio network temporary identifier (RNTI) associated with the DL channel or the quasi-co-location information for the DL channel.
  • RNTI radio network temporary identifier
  • the NE may transmit the control signaling by radio resource control (RRC) signaling, e.g., RRCReconfiguration, master information block (MIB) , or system information block (SIB) .
  • RRC radio resource control
  • the NE may configure a CORESET and configure the search space to be associated with one or multiple CORESETs.
  • the NE transmits DL channel for PDCCH indication indicating the one or multiple PDCCH locations and one or multiple PDCCHs on the indicated one or multiple PDCCH locations.
  • the UE may further communicate with the NE based on the downlink control information (DCI) received in the PDCCH.
  • DCI downlink control information
  • the UE receives a DL transmission (e.g., physical downlink shared channel (PDSCH) or channel state information-reference signal (CSI-RS) ) scheduled by the DCI, and/or transmits an uplink transmission (e.g., physical uplink shared channel (PUSCH) , physical uplink control channel (PUCCH) , or sounding reference signal (SRS) ) scheduled by the DCI.
  • a DL transmission e.g., physical downlink shared channel (PDSCH) or channel state information-reference signal (CSI-RS)
  • CSI-RS channel state information-reference signal
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • SRS sounding reference signal
  • a UE receives, from a network entity, a configuration configuring a time domain resource and a frequency domain resource for a downlink (DL) channel for carrying a PDCCH indication.
  • the UE receives, from the network entity, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location.
  • the UE communicates, with the network entity, based on DCI in the at least one PDCCH transmission.
  • a NE transmits, to a UE, a configuration configuring a time domain resource and a frequency domain resource for a downlink (DL) channel for carrying a PDCCH indication.
  • the NE transmits, to the UE, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location.
  • the NE communicates, with the UE, based on DCI in the at least one PDCCH transmission.
  • the UE power for PDCCH detection is reduced.
  • the computing resources and network bandwidths are also reduced, thereby the performance of the network communication system is improved.
  • FIG. 1 illustrates a diagram of a wireless communications system that includes a plurality of user equipments (UEs) and network entities in communication over one or more cells according to an embodiment.
  • UEs user equipments
  • FIG. 2 illustrates an example of physical downlink control channel (PDCCH) candidates according to an embodiment.
  • PDCCH physical downlink control channel
  • FIG. 3 illustrates a signaling diagram of communications between a UE and a network entity for the UE power saving based PDCCH detection according to an embodiment.
  • FIG. 4 illustrates a signaling diagram of UE behavior for the UE power saving based PDCCH detection according to an embodiment.
  • FIG. 5 illustrates a signaling diagram of network entity behavior for the UE power saving based PDCCH detection according to an embodiment.
  • FIG. 6A illustrates an example of the intra-slot PDCCH reception based on the dynamic indication of the PDCCH location according to an embodiment.
  • FIG. 6B illustrates an example of multi-slot PDCCH indication according to an embodiment.
  • FIG. 6C illustrates an example of cross-serving cell PDCCH indication according to an embodiment.
  • FIG. 6D illustrates an example of multi-serving cell PDCCH indication according to an embodiment.
  • FIG. 7 illustrates an example of the physical control indicator channel (PCICH) indication for multiple UEs according to an embodiment.
  • PCICH physical control indicator channel
  • FIG. 8 illustrates an example of PDCCH reception based on the candidate PDCCH locations according to an embodiment.
  • FIG. 9A illustrates an example of the PCICH in discontinuous resource elements (REs) /resource blocks (RBs) in one symbol according to an embodiment.
  • REs discontinuous resource elements
  • RBs resource blocks
  • FIG. 9B illustrates an example of the PCICH in discontinuous REs/RBs in two symbols according to an embodiment.
  • FIG. 10 illustrates an example of PCICH based on two repetitions according to an embodiment.
  • FIG. 11A illustrates an example of frequency division multiplexed PCICH monitoring occasions according to an embodiment.
  • FIG. 11B illustrates an example of time division multiplexed PCICH monitoring occasions according to an embodiment.
  • FIG. 12 illustrates an example of PCICH generation according to an embodiment.
  • FIG. 13 illustrates an example of sequence based PCICH generation according to an embodiment.
  • FIG. 14 is a flowchart of a method of wireless communication at a UE for the UE power saving based PDCCH detection according to an embodiment.
  • FIG. 15 is a flowchart of a method of wireless communication at a network entity for the UE power saving based PDCCH detection according to an embodiment.
  • FIG. 16 is a diagram illustrating a hardware implementation for an example UE apparatus according to some embodiments.
  • FIG. 17 is a diagram illustrating a hardware implementation for one or more example network entities according to some embodiments.
  • FIG. 1 illustrates a diagram 100 of a wireless communications system associated with a plurality of cells 190.
  • the wireless communications system includes user equipments (UEs) 102 and base stations/network entities 104.
  • Some base stations may include an aggregated base station architecture and other base stations may include a disaggregated base station architecture.
  • the aggregated base station architecture utilizes a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node.
  • RAN radio access network
  • a disaggregated base station architecture utilizes a protocol stack that is physically or logically distributed among two or more units (e.g., radio unit (RU) 106, distributed unit (DU) 108, central unit (CU) 110) .
  • RU radio unit
  • DU distributed unit
  • CU central unit
  • a CU 110 is implemented within a RAN node, and one or more DUs 108 may be co-located with the CU 110, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes.
  • the DUs 108 may be implemented to communicate with one or more RUs 106. Any of the RU 106, the DU 108 and the CU 110 can be implemented as virtual units, such as a virtual radio unit (VRU) , a virtual distributed unit (VDU) , or a virtual central unit (VCU) .
  • the base station/network entity 104 e.g., an aggregated base station or disaggregated units of the base station, such as the RU 106 or the DU 108) , may be referred to as a transmission reception point (TRP) .
  • TRP transmission reception point
  • Operations of the base station 104 and/or network designs may be based on aggregation characteristics of base station functionality.
  • disaggregated base station architectures are utilized in an integrated access backhaul (IAB) network, an open-radio access network (O-RAN) network, or a virtualized radio access network (vRAN) , which may also be referred to a cloud radio access network (C-RAN) .
  • Disaggregation may include distributing functionality across the two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network designs.
  • the various units of the disaggregated base station architecture, or the disaggregated RAN architecture can be configured for wired or wireless communication with at least one other unit.
  • the base stations 104d, 104e and/or the RUs 106a, 106b, 106c, 106d may communicate with the UEs 102a, 102b, 102c, 102d, and/or 102s via one or more radio frequency (RF) access links based on a Uu interface.
  • RF radio frequency
  • multiple RUs 106 and/or base stations 104 may simultaneously serve the UEs 102, such as by intra-cell and/or inter-cell access links between the UEs 102 and the RUs 106/base stations 104.
  • the RU 106, the DU 108, and the CU 110 may include (or may be coupled to) one or more interfaces configured to transmit or receive information/signals via a wired or wireless transmission medium.
  • a wired interface can be configured to transmit or receive the information/signals over a wired transmission medium, such as via the fronthaul link 160 between the RU 106d and the baseband unit (BBU) 112 of the base station 104d associated with the cell 190d.
  • the BBU 112 includes a DU 108 and a CU 110, which may also have a wired interface (e.g., midhaul link) configured between the DU 108 and the CU 110 to transmit or receive the information/signals between the DU 108 and the CU 110.
  • a wired interface e.g., midhaul link
  • a wireless interface which may include a receiver, a transmitter, or a transceiver, such as an RF transceiver, configured to transmit and/or receive the information/signals via the wireless transmission medium, such as for information communicated between the RU 106a of the cell 190a and the base station 104e of the cell 190e via cross-cell communication beams 136-138 of the RU 106a and the base station 104e.
  • a wireless interface which may include a receiver, a transmitter, or a transceiver, such as an RF transceiver, configured to transmit and/or receive the information/signals via the wireless transmission medium, such as for information communicated between the RU 106a of the cell 190a and the base station 104e of the cell 190e via cross-cell communication beams 136-138 of the RU 106a and the base station 104e.
  • the RUs 106 may be configured to implement lower layer functionality.
  • the RU 106 is controlled by the DU 108 and may correspond to a logical node that hosts RF processing functions, or lower layer PHY functionality, such as execution of fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.
  • FFT fast Fourier transform
  • iFFT inverse FFT
  • PRACH physical random access channel extraction and filtering
  • the functionality of the RU 106 may be based on the functional split, such as a functional split of lower layers.
  • the RUs 106 may transmit or receive over-the-air (OTA) communication with one or more UEs 102.
  • the RU 106b of the cell 190b communicates with the UE 102b of the cell 190b via a first set of communication beams 132 of the RU 106b and a second set of communication beams 134b of the UE 102b, which may correspond to inter-cell communication beams or, in some examples, cross-cell communication beams.
  • the UE 102b of the cell 190b may communicate with the RU 106a of the cell 190a via a third set of communication beams 134a of the UE 102b and a fourth set of communication beams 136 of the RU 106a.
  • DUs 108 can control both real-time and non-real-time features of control plane and user plane communications of the RUs 106.
  • Communication links between the UEs 102 and the base stations 104/RUs 106 may be based on multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and/or transmit diversity.
  • the communication links may be associated with one or more carriers.
  • the UEs 102 and the base stations 104/RUs 106 may utilize a spectrum bandwidth of Y MHz (e.g., 5, 10, 15, 20, 100, 400, 800, 1600, 2000, etc. MHz) per carrier allocated in a carrier aggregation of up to a total of Yx MHz, where x component carriers (CCs) are used for communication in each of the uplink and downlink directions.
  • Y MHz e.g., 5, 10, 15, 20, 100, 400, 800, 1600, 2000, etc. MHz
  • CCs component carriers
  • the carriers may or may not be adjacent to each other along a frequency spectrum.
  • the UEs 102 and the base stations 104/RUs 106 may each include a plurality of antennas.
  • the plurality of antennas may correspond to antenna elements, antenna panels, and/or antenna arrays that may facilitate beamforming operations.
  • the RU 106b transmits a downlink beamformed signal based on a first set of communication beams 132 to the UE 102b in one or more transmit directions of the RU 106b.
  • the UE 102b may receive the downlink beamformed signal based on a second set of communication beams 134b from the RU 106b in one or more receive directions of the UE 102b.
  • the UE 102b may also transmit an uplink beamformed signal (e.g., sounding reference signal (SRS) ) to the RU 106b based on the second set of communication beams 134b in one or more transmit directions of the UE 102b.
  • the RU 106b may receive the uplink beamformed signal from the UE 102b in one or more receive directions of the RU 106b.
  • the UE 102b may perform beam training to determine the best receive and transmit directions for the beamformed signals.
  • the transmit and receive directions for the UEs 102 and the base stations 104/RUs 106 may or may not be the same.
  • beamformed signals may be communicated between a first base station/RU 106a and a second base station 104e.
  • the base station 104e of the cell 190e may transmit a beamformed signal to the RU 106a based on the communication beams 138 in one or more transmit directions of the base station 104e.
  • the RU 106a may receive the beamformed signal from the base station 104e of the cell 190e based on the RU communication beams 136 in one or more receive directions of the RU 106a.
  • the base station 104e transmits a downlink beamformed signal to the UE 102e based on the communication beams 138 in one or more transmit directions of the base station 104e.
  • the UE 102e receives the downlink beamformed signal from the base station 104e based on UE communication beams 130 in one or more receive directions of the UE 102e.
  • the UE 102e may also transmit an uplink beamformed signal to the base station 104e based on the UE communication beams 130 in one or more transmit directions of the UE 102e, such that the base station 104e may receive the uplink beamformed signal from the UE
  • the base station 104 may include and/or be referred to as a network entity. That is, “network entity” may refer to the base station 104 or at least one unit of the base station 104, such as the RU 106, the DU 108, and/or the CU 110.
  • the base station 104 may also include and/or be referred to as a next generation evolved Node B (ng-eNB) , a next generation NB (gNB) , an evolved NB (eNB) , an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a TRP, a network node, network equipment, or other related terminology.
  • ng-eNB next generation evolved Node B
  • gNB next generation NB
  • eNB evolved NB
  • an access point a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a TRP, a network node, network equipment, or other related terminology.
  • BSS basic service set
  • ESS extended service set
  • the base station 104 or an entity at the base station 104 can be implemented as an IAB node, a relay node, a sidelink node, an aggregated (monolithic) base station, or a disaggregated base station including one or more RUs 106, DUs 108, and/or CUs 110.
  • a set of aggregated or disaggregated base stations may be referred to as a next generation-radio access network (NG-RAN) .
  • the UE 102a operates in dual connectivity (DC) with the base station 104e and the base station/RU 106a.
  • the base station 104e can be a master node and the base station/RU 160a can be a secondary node.
  • Uplink/downlink signaling may also be communicated via a satellite positioning system (SPS) 114.
  • the SPS 114 associated with the cell 190c may be in communication with one or more UEs 102, such as the UE 102c, and one or more base stations 104/RUs 106, such as the RU 106c.
  • the SPS 114 may correspond to one or more of a Global Navigation Satellite System (GNSS) , a global position system (GPS) , a non-terrestrial network (NTN) , or other satellite position/location system.
  • GNSS Global Navigation Satellite System
  • GPS global position system
  • NTN non-terrestrial network
  • the SPS 114 may be associated with LTE signals, NR signals (e.g., based on round trip time (RTT) and/or multi-RTT) , wireless local area network (WLAN) signals, a terrestrial beacon system (TBS) , sensor-based information, NR enhanced cell ID (NR E-CID) techniques, downlink angle-of-departure (DL-AoD) , downlink time difference of arrival (DL-TDOA) , uplink time difference of arrival (UL-TDOA) , uplink angle-of-arrival (UL-AoA) , and/or other systems, signals, or sensors.
  • NR signals e.g., based on round trip time (RTT) and/or multi-RTT
  • WLAN wireless local area network
  • TBS terrestrial beacon system
  • sensor-based information e.g., NR enhanced cell ID (NR E-CID) techniques, downlink angle-of-departure (DL-AoD) , downlink time difference of arrival (DL-TDOA)
  • any of the UEs 102 may include an indication component 140 configured to receive, from a network entity, a configuration configuring a time domain resource and a frequency domain resource for a DL channel for carrying a PDCCH indication.
  • the indication component 140 is configured to receive, from the network entity, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location.
  • the indication component 140 is configured to communicate, with the network entity, based on DCI in the at least one PDCCH transmission.
  • any of the base stations 104 or a network entity of the base stations 104 may include a configuration component 150 configured to transmit, to the UE, a configuration configuring a time domain resource and a frequency domain resource for a DL channel for carrying a PDCCH indication.
  • the configuration component 150 is configured to transmit, to the UE, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location.
  • the configuration component 150 is configured to communicate with the UE, based on DCI in the at least one PDCCH transmission.
  • FIG. 1 describes a wireless communication system that may be implemented in connection with aspects of one or more other figures described herein.
  • 5G NR 5G Advanced and future versions
  • LTE Long Term Evolution
  • LTE-A LTE-advanced
  • 6G 6G
  • FIG. 2 illustrates an example of PDCCH candidates according to an embodiment.
  • the NE transmits the PDCCH transmissions at time and frequency domain resources configured by an SS and its associated CORESET.
  • the NE configures the time-domain (TD) resource by the SS and frequency-domain (FD) resource by the CORESET.
  • TD time-domain
  • FD frequency-domain
  • M control channel elements
  • One CCE e.g., 210, 220, or 230
  • G resource element groups
  • One REG corresponds to one resource block (RB) .
  • the UE Since the UE does not know which PDCCH candidates will be used for PDCCH transmission, the UE performs blind detection for all the PDCCH candidates to receive the PDCCH transmission. In one example, the UE may perform up to 44 blind detections in a slot for PDCCH reception. Such blind detection could cause high UE power consumption. It is important to let the UE know the exact location for the PDCCH. With regard to the scheduling flexibility, it is better for the NE to indicate the PDCCH location in a dynamic manner.
  • Dynamically indicating the PDCCH location will reduce the number of blind detections. Accordingly, a signal for the DL channel may be generated to provide such dynamic indication for UE power saving.
  • the dynamical indication of PDCCH location and the signal generation for the DL channel will be discussed in detail below.
  • FIG. 3 is a signaling diagram 300 illustrating communications between a UE 102 and a network entity 104 for the UE power saving based PDCCH detection.
  • the network entity 104 may correspond to a base station or a unit of a base station, such as the RU 106, the DU 108, the CU 110, etc.
  • the UE 102 may transmit 302, to the network entity 104, a UE capability message indicating a UE capability for supporting a configuration for a DL channel for carrying a PDCCH indication.
  • the NE 104 may receive 302, from the UE 102, the UE capability message indicating the UE capability for supporting the configuration for the DL channel for carrying a PDCCH indication.
  • the UE may report 302 its capability on the supported configuration for the DL channel for PDCCH indication.
  • the UE may report at least one of the following capabilities: whether the UE supports the DL channel for PDCCH indication; maximum number of PDCCHs that it can decode within a set of symbols or a slot; maximum number of PDCCH candidates that it can decode within a set of symbols or a slot; maximum number of repetitions for the DL channel for PDCCH indication that it can support; supported multiplexing scheme (s) , e.g., time domain multiplexing (TDM) /frequency domain multiplexing (FDM) , between the DL channel for PDCCH indication and a synchronization signals (SS) and physical broadcast channel (SS/PBCH) block (referred to as synchronization signal block (SSB) ) ; supported multiplexing scheme (s) , e.g., TDM/FDM/single frequency networks (SFN) , for the repetitions for the DL channel for PDCCH indication.
  • TDM time domain multiplexing
  • FDM frequency domain multiplexing
  • SS synchronization signals
  • the NE 104 transmits 304, to the UE 102, the configuration configuring a time domain resource and a frequency domain resource for the DL channel for carrying the PDCCH indication.
  • the UE 102 receives 304, from the NE 104, the configuration configuring a time domain resource and a frequency domain resource for the DL channel for carrying the PDCCH indication.
  • the NE 104 configures the time and frequency domain resource for the DL channel for the PDCCH indication.
  • the NE 104 may also configure at least one search space for the PDCCH, and optionally configure at least one of the followings for the DL channel for the PDCCH indication: a radio network temporary identifier (RNTI) associated with the DL channel, or the quasi-co-location (QCL) information for the DL channel.
  • the NE may transmit the control signaling by radio resource control (RRC) signaling, e.g., RRCReconfiguration, master information block (MIB) , or system information block (SIB) .
  • RRC radio resource control
  • MIB master information block
  • SIB system information block
  • the NE may configure a control resource set (CORESET) and configure the search space to be associated with one or multiple CORESETs.
  • the NE 104 transmits 306, to the UE 102, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location.
  • the UE 102 receives 306, from the NE 104, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location.
  • the NE 104 transmits the DL channel for the PDCCH indication indicating the one or multiple PDCCH locations. Then the NE 104 transmits one or multiple PDCCH transmissions on the indicated one or multiple PDCCH locations.
  • the NE 104 transmits the at least one PDCCH transmission in a two-stage manner. In the first stage, the NE 104 transmits the DL channel to indicate the location of the at least one PDCCH transmission. In the second stage, the NE 104 transmits the at least one PDCCH transmission. Similarly, at the UE side, the UE 102 receives the at least one PDCCH transmission in a two-stage manner. In the first stage, the UE 102 receives the DL channel to indicate the location of the at least one PDCCH transmission. In the second stage, UE 102 receives the at least one PDCCH transmission.
  • the PDCCH indication on the DL channel and at least one PDCCH transmission may be multiplexed in the same slot or even the same symbol.
  • the PDCCH indication on the DL channel and at least one PDCCH transmission are transmitted and/or received in the same message.
  • the UE 102 may decode the PDCCH indication on the DL channel first, then the UE may decode the at least one PDCCH transmission.
  • Downlink control information (DCI) is carried in the at least one PDCCH transmission based on the PDCCH indication.
  • the UE 102 obtains the DCI in the at least one PDCCH transmission based on the PDCCH indication.
  • the UE 102 communicates 308, with the network entity 104, based on the DCI in the at least one PDCCH transmission.
  • the NE 104 communicates 308, with the UE 102, based on the DCI in the at least one PDCCH transmission.
  • the UE 102 may further communicate with the NE 104 based on the received DCI in the at least one PDCCH transmission.
  • the UE may receive the DL signal, e.g., PDSCH or CSI-RS, scheduled by the DCI, and/or transmit an uplink signal, e.g., PUSCH, PUCCH or SRS, scheduled by the DCI.
  • a RRC signaling may indicate a RRC reconfiguration message from the NE to UE, or a master information block (MIB) , or a system information block (SIB) , where the SIB can be an existing SIB (e.g., SIB1) or a new SIB (e.g., SIB J, where J is an integer above 21) transmitted by the network entity.
  • the NE receives the one or more capabilities from a core network (e.g., Access and Mobility Management Function (AMF) ) .
  • the network entity receives the one or more capabilities from another base station (e.g., gNB or eNB) .
  • FIG. 4 illustrates a signaling diagram of UE behavior for UE power saving for PDCCH detection according to an embodiment.
  • the UE 102 may transmit 302, to the network entity 104, a UE capability message indicating a UE capability for supporting a configuration for a DL channel for carrying a PDCCH indication.
  • the UE 102 receives 304, from the NE 104, the configuration configuring a time domain resource and a frequency domain resource for the DL channel for carrying the PDCCH indication. Then UE 102 receives 306, from the NE 104, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location. The UE 102 obtains the DCI in the at least one PDCCH transmission based on the PDCCH indication. The UE 102 communicates 308, with the network entity 104, based on the DCI in the at least one PDCCH transmission.
  • FIG. 5 illustrates a signaling diagram of network entity behavior for UE power saving for PDCCH detection according to an embodiment.
  • the NE 104 may receive 502, from the UE 102, the UE capability message indicating the UE capability for supporting the configuration for the DL channel for carrying a PDCCH indication.
  • the NE 104 transmits 504, to the UE 102, the configuration configuring a time domain resource and a frequency domain resource for the DL channel for carrying the PDCCH indication. Then the NE 104 transmits 506, to the UE 102, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location. The NE 104 communicates 508, with the UE 102, based on DCI in the at least one PDCCH transmission.
  • the DL channel for carrying the PDCCH indication may be a dedicated channel, e.g., physical control indicator channel (PCICH) .
  • the DL channel may be a physical control format indicator channel (PCFICH) .
  • the DL channel may be another PDCCH.
  • the DL channel for carrying a PDCCH indication, PCICH, PCFICH, and another PDCCH for a PDCCH indication are interchangeable.
  • the PDCCH indication may indicates, in at least one slot of the DL channel, at least one of:
  • CCE control channel element
  • a CCE aggregation level (AL) for the at least one PDCCH transmission a CCE aggregation level (AL) for the at least one PDCCH transmission
  • FIG. 16 is a diagram 1600 illustrating an example of a hardware implementation for a UE apparatus 1602.
  • the UE apparatus 1602 may be the UE 102, a component of the UE 102, or may implement UE functionality.
  • the UE apparatus 1602 may include an application processor 1606, which may have on-chip memory 1606’ .
  • the application processor 1606 may be coupled to a secure digital (SD) card 1608 and/or a display 1610.
  • the application processor 1606 may also be coupled to a sensor (s) module 1612, a power supply 1614, an additional module of memory 1616, a camera 1618, and/or other related components.
  • SD secure digital
  • the application processor 1606 may also be coupled to a sensor (s) module 1612, a power supply 1614, an additional module of memory 1616, a camera 1618, and/or other related components.
  • the UE apparatus 1602 may further include a wireless baseband processor 1626, which may be referred to as a modem.
  • the wireless baseband processor 1626 may have on-chip memory 1626'.
  • the wireless baseband processor 1626 may also be coupled to the sensor (s) module 1612, the power supply 1614, the additional module of memory 1616, the camera 1618, and/or other related components.
  • the wireless baseband processor 1626 may be additionally coupled to one or more subscriber identity module (SIM) card (s) 1620 and/or one or more transceivers 1630 (e.g., wireless RF transceivers) .
  • SIM subscriber identity module
  • the UE apparatus 1602 may include a Bluetooth module 1632, a WLAN module 1634, an SPS module 1636 (e.g., GNSS module) , and/or a cellular module 1638.
  • the Bluetooth module 1632, the WLAN module 1634, the SPS module 1636, and the cellular module 1638 may each include an on-chip transceiver (TRX) , or in some cases, just a transmitter (TX) or just a receiver (RX) .
  • TRX on-chip transceiver
  • the Bluetooth module 1632, the WLAN module 1634, the SPS module 1636, and the cellular module 1638 may each include dedicated antennas and/or utilize antennas 1640 for communication with one or more other nodes.
  • the UE apparatus 1602 can communicate through the transceiver (s) 1630 via the antennas 1640 with another UE (e.g., sidelink communication) and/or with a network entity 104 (e.g., uplink/downlink communication) , where the network entity 104 may correspond to a base station or a unit of the base station, such as the RU 106, the DU 108, or the CU 110.
  • another UE e.g., sidelink communication
  • a network entity 104 e.g., uplink/downlink communication
  • the network entity 104 may correspond to a base station or a unit of the base station, such as the RU 106, the DU 108, or the CU 110.
  • the wireless baseband processor 1626 and the application processor 1606 may each include a computer-readable medium /memory 1626', 1606', respectively.
  • the additional module of memory 1616 may also be considered a computer-readable medium /memory.
  • Each computer-readable medium /memory 1626', 1606', 1616 may be non-transitory.
  • the wireless baseband processor 1626 and the application processor 1606 may each be responsible for general processing, including execution of software stored on the computer-readable medium /memory 1626', 1606', 1616.
  • the software when executed by the wireless baseband processor 1626 /application processor 1606, causes the wireless baseband processor 1626 /application processor 1606 to perform the various functions described herein.
  • the computer-readable medium /memory may also be used for storing data that is manipulated by the wireless baseband processor 1626 /application processor 1606 when executing the software.
  • the wireless baseband processor 1626 /application processor 1606 may be a component of the UE 102.
  • the UE apparatus 1602 may be a processor chip (e.g., modem and/or application) and include just the wireless baseband processor 1626 and/or the application processor 1606. In other examples, the UE apparatus 1602 may be the entire UE 102 and include the additional modules of the apparatus 1602.
  • the indication component 140 is configured to receive, from a network entity, a configuration configuring a time domain resource and a frequency domain resource for a DL channel for carrying a PDCCH indication.
  • the indication component 140 is configured to receive, from the network entity, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location.
  • the indication component 140 is configured to communicate, with the network entity, based on DCI in the at least one PDCCH transmission.
  • the indication component 140 may be within the application processor 1606 (e.g., at 140a) , the wireless baseband processor 1626 (e.g., at 140b) , or both the application processor 1606 and the wireless baseband processor 1626.
  • the indication component 140a-140b may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by one or more processors configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by the one or more processors, or a combination thereof.
  • FIG. 17 is a diagram 1700 illustrating an example of a hardware implementation for one or more network entities 104.
  • the one or more network entities 104 may be a base station, a component of a base station, or may implement base station functionality.
  • the one or more network entities 104 may include, or may correspond to, at least one of the RU 106, the DU, 108, or the CU 110.
  • the CU 110 may include a CU processor 1746, which may have on-chip memory 1746'.
  • the CU 110 may further include an additional module of memory 1756 and/or a communications interface 1748, both of which may be coupled to the CU processor 1746.
  • the CU 110 can communicate with the DU 108 through a midhaul link 162, such as an F1 interface between the communications interface 1748 of the CU 110 and a communications interface 1728 of the DU 108.
  • the DU 108 may include a DU processor 1726, which may have on-chip memory 1726'. In some aspects, the DU 108 may further include an additional module of memory 1736 and/or the communications interface 1728, both of which may be coupled to the DU processor 1726.
  • the DU 108 can communicate with the RU 106 through a fronthaul link 160 between the communications interface 1728 of the DU 108 and a communications interface 1708 of the RU 106.
  • the RU 106 may include an RU processor 1706, which may have on-chip memory 1706'. In some aspects, the RU 106 may further include an additional module of memory 1716, the communications interface 1708, and one or more transceivers 1730, all of which may be coupled to the RU processor 1706. The RU 106 may further include antennas 1740, which may be coupled to the one or more transceivers 1730, such that the RU 106 can communicate through the one or more transceivers 1730 via the antennas 1740 with the UE 102.
  • the on-chip memory 1706', 1726', 1746'a nd the additional modules of memory 1716, 1736, 1756 may each be considered a computer-readable medium /memory. Each computer-readable medium /memory may be non-transitory. Each of the processors 1706, 1726, 1746 is responsible for general processing, including execution of software stored on the computer-readable medium /memory. The software, when executed by the corresponding processor (s) 1706, 1726, 1746 causes the processor (s) 1706, 1726, 1746 to perform the various functions described herein.
  • the computer-readable medium /memory may also be used for storing data that is manipulated by the processor (s) 1706, 1726, 1746 when executing the software.
  • the configuration component 150 may sit at any of the one or more network entities 104, such as at the CU 110; both the CU 110 and the DU 108; each of the CU 110, the DU 108, and the RU 106; the DU 108; both the DU 108 and the RU 106; or the RU 106.
  • the configuration component 150 is configured to transmit, to the UE, a configuration configuring a time domain resource and a frequency domain resource for a DL channel for carrying a PDCCH indication.
  • the configuration component 150 is configured to transmit, to the UE, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location.
  • the configuration component 150 is configured to communicate, with the UE, based on DCI in the at least one PDCCH transmission.
  • the configuration component 150 may be within one or more processors of the one or more network entities 104, such as the RU processor 1706 (e.g., at 150a) , the DU processor 1726 (e.g., at 150b) , and/or the CU processor 1746 (e.g., at 150c) .
  • the configuration component 150a-150c may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by one or more processors 1706, 1726, 1746 configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by the one or more processors 1706, 1726, 1746, or a combination thereof.
  • processors include microprocessors, microcontrollers, graphics processing units (GPUs) , central processing units (CPUs) , application processors, digital signal processors (DSPs) , reduced instruction set computing (RISC) processors, systems-on-chip (SoC) , baseband processors, field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other similar hardware configured to perform the various functionality described throughout this disclosure.
  • GPUs graphics processing units
  • CPUs central processing units
  • DSPs digital signal processors
  • RISC reduced instruction set computing
  • SoC systems-on-chip
  • FPGAs field programmable gate arrays
  • PLDs programmable logic devices
  • One or more processors in the processing system may execute software, which may be referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.
  • Computer-readable media includes computer storage media and can include a random-access memory (RAM) , a read-only memory (ROM) , an electrically erasable programmable ROM (EEPROM) , optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of these types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
  • Storage media may be any available media that can be accessed by a computer.
  • aspects, implementations, and/or use cases described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements.
  • the aspects, implementations, and/or use cases may come about via integrated chip implementations and other non-module-component based devices, such as end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, machine learning (ML) -enabled devices, etc.
  • the aspects, implementations, and/or use cases may range from chip-level or modular components to non-modular or non-chip-level implementations, and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more techniques described herein.
  • OEM original equipment manufacturer
  • Devices incorporating the aspects and features described herein may also include additional components and features for the implementation and practice of the claimed and described aspects and features.
  • transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes, such as hardware components, antennas, RF-chains, power amplifiers, modulators, buffers, processor (s) , interleavers, adders/summers, etc.
  • Techniques described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc., of varying configurations.
  • “may” refers to a permissible feature that may or may not occur
  • “might” refers to a feature that probably occurs
  • “can” refers to a capability (e.g., capable of) .
  • the phrase “For example” often carries a similar connotation to “may” and, therefore, “may” is sometimes excluded from sentences that include “for example” or other similar phrases.
  • Combinations such as “at least one of A, B, or C” or “one or more of A, B, or C” include any combination of A, B, and/or C, such as A and B, A and C, B and C, or A and B and C, and may include multiples of A, multiples of B, and/or multiples of C, or may include A only, B only, or C only.
  • Sets should be interpreted as a set of elements where the elements number one or more.
  • Terms or articles such as “a” , “an” , and/or “the” may refer to one of an item, feature, element, etc., that the term or article precedes, or may refer to more than one of said item, feature, element, etc. that the term or article precedes.
  • the recitation “awidget” does not preclude reference to multiples of said widget, as “multiple widgets” necessarily includes “a widget” .
  • the recitation “a widget” may be interpreted as “at least one widget” or, similarly, interpreted as “one or more widgets” .
  • ordinal terms such as “first” and “second” do not necessarily imply an order in time, sequence, numerical value, etc., but are used to distinguish between different instances of a term or phrase that follows each ordinal term.
  • Example 1 is a method of wireless communication at a UE, including: A method of wireless communication at a user equipment, UE, (102) , comprising: receiving, from a network entity, a configuration configuring a time domain resource and a frequency domain resource for a downlink, DL, channel for carrying a physical downlink control channel, PDCCH, indication; receiving, from the network entity, the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location; and communicating, with the network entity, based on DCI in the at least one PDCCH transmission.
  • a method of wireless communication at a user equipment, UE, (102) comprising: receiving, from a network entity, a configuration configuring a time domain resource and a frequency domain resource for a downlink, DL, channel for carrying a physical downlink control channel, PDCCH, indication; receiving, from the network entity, the PDCCH indication on the DL channel indicating at least one PDCCH location and at
  • Example 2 may be combined with Example 1 and includes that transmitting, to the network entity, a UE capability message indicating a UE capability for supporting the configuration for the DL channel for carrying the PDCCH indication.
  • Example 3 may be combined with any of Examples 1-2 and further includes the configuration further configures at least one search space for one or more PDCCH candidates associated with the at least one PDCCH transmission.
  • Example 4 may be combined with any of Examples 1-3 and further includes the configuration further configures at least one of a radio network temporary identifier, RNTI, associated with the DL channel, or a quasi-co-location information, QCL, for the DL channel.
  • RNTI radio network temporary identifier
  • QCL quasi-co-location information
  • Example 5 may be combined with any of Examples 1-4 and further includes the PDCCH indication indicates, in at least one slot of the DL channel, at least one of:
  • CCE control channel element
  • a CCE aggregation level (AL) for the at least one PDCCH transmission a CCE aggregation level (AL) for the at least one PDCCH transmission
  • Example 6 may be combined with any of Examples 1-5 and further includes the at least one PDCCH transmission comprises at least one of:
  • a first PDCCH repetition and a second PDCCH repetition located in a different serving cell or bandwidth part from the DL channel, or
  • a first PDCCH repetition and a second PDCCH repetition located in multiple serving cells or bandwidth parts.
  • Example 7 may be combined with any of Examples 1-6 and further includes the receiving, from the network entity, the PDCCH indication on the DL channel comprises: receiving, from the network entity, the PDCCH indication on the DL channel based on a UE-specific RNTI.
  • Example 8 may be combined with any of Examples 1-6 and further includes the receiving, from the network entity, the PDCCH indication on the DL channel comprises: receiving, from the network entity, the PDCCH indication on the DL channel based on a RNTI, a physical cell identifier (PCI) , or a virtual cell identifier in a group-cast manner or broadcast manner.
  • a RNTI a physical cell identifier
  • PCI physical cell identifier
  • Example 8 may be combined with any of Examples 1-6 and further includes the receiving, from the network entity, the PDCCH indication on the DL channel comprises: receiving, from the network entity, the PDCCH indication on the DL channel based on a RNTI, a physical cell identifier (PCI) , or a virtual cell identifier in a group-cast manner or broadcast manner.
  • PCI physical cell identifier
  • Example 9 may be combined with Example 8 and further includes the PDCCH indication on the DL channel indicates a PDCCH location for each UE of a group of UEs, or multiple PDCCH locations for the at least one PDCCH transmission.
  • Example 10 may be combined with any of Examples 1-9 and further includes wherein the DL channel includes a physical control indicator channel (PCICH) .
  • PCICH physical control indicator channel
  • Example 11 may be combined with Example 10 and further includes the time domain resource and the frequency domain resource for the PCICH in a slot is pre-defined or configured by the network entity.
  • Example 12 may be combined with any of Examples 10-11 and further includes quasi-co-location, QCL, information of the PCICH is based on a synchronization signal block (SSB) resource or a channel state information reference signal (CSI-RS) resource with regard to at least one of: an average delay, a delay spread, a Doppler shift, a Doppler spread, a spatial reception parameter, or an average gain; wherein the receiving the PDCCH indication is based on the QCL information.
  • SSB synchronization signal block
  • CSI-RS channel state information reference signal
  • Example 13 may be combined with any of Examples 10-12 and further includes monitoring occasions of the PCICH are multiplexed in a frequency domain multiplexing (FDM) manner or a time domain multiplexing (TDM) manner.
  • FDM frequency domain multiplexing
  • TDM time domain multiplexing
  • Example 14 may be combined with Examples 10-13 and further includes multiple sequences are pre-defined or configured for the PCICH.
  • Example 15 is a method of wireless communication at a network entity and includes:
  • the PDCCH indication on the DL channel indicating at least one PDCCH location and at least one PDCCH transmission on the at least one PDCCH location;
  • Example 16 may be combined with Examples 15 and further includes receiving, from the UE, a UE capability message indicating a UE capability for supporting the configuration for the DL channel for carrying the PDCCH indication.
  • Example 17 may be combined with any of Examples 15-16 and further includes the configuration further configures at least one search space for one or more PDCCH candidates associated with the at least one PDCCH transmission.
  • Example 18 may be combined with any of Examples 15-17 and further includes the configuration further configures at least one of a radio network temporary identifier, RNTI, associated with the DL channel, or a quasi-co-location information for the DL channel.
  • RNTI radio network temporary identifier
  • Example 19 may be combined with any of Examples 15-18 and further includes the PDCCH indication indicates, in at least one slot of the DL channel, at least one of:
  • CCE control channel element
  • a CCE aggregation level (AL) for the at least one PDCCH transmission a CCE aggregation level (AL) for the at least one PDCCH transmission
  • Example 20 may be combined with any of Examples 15-19 and further includes the at least one PDCCH transmission comprises at least one of:
  • a first PDCCH repetition and a second PDCCH repetition located in multiple slots, a first PDCCH repetition and a second PDCCH repetition located in a different serving cell or bandwidth part from the DL channel, or
  • a first PDCCH repetition and a second PDCCH repetition located in multiple serving cells or bandwidth parts.
  • Example 21 may be combined with any of Examples 15-20 and further includes the transmitting, to the UE, the PDCCH indication on the DL channel comprises: transmitting, to the UE, the PDCCH indication on the DL channel based on a radio network temporary identifier, RNTI, a physical cell identifier, PCI, or a virtual cell ID in group-cast manner.
  • RNTI radio network temporary identifier
  • PCI physical cell identifier
  • Example 21 may be combined with any of Examples 15-20 and further includes the transmitting, to the UE, the PDCCH indication on the DL channel comprises: transmitting, to the UE, the PDCCH indication on the DL channel based on a radio network temporary identifier, RNTI, a physical cell identifier, PCI, or a virtual cell ID in group-cast manner.
  • Example 22 may be combined with Example 21 and further includes the downlink channel is a physical control indicator channel (PCICH) , wherein a payload of the PCICH comprises the PDCCH indication for the UE and another PDCCH indication for another UE.
  • PCICH physical control indicator channel
  • Example 23 may be combined with Example 21 and further includes the PDCCH indication on the DL channel indicates a PDCCH location for each UE of a group of UEs, or multiple PDCCH locations for the at least one PDCCH transmission.
  • Example 24 may be combined with any of Examples 15-23 and further includes the downlink channel is a physical control indicator channel (PCICH) .
  • PCICH physical control indicator channel
  • Example 25 may be combined with Example 24 and further includes at least one of a time or frequency domain resource for the PCICH or the PCFICH in a slot is pre-defined or configured by the network entity.
  • Example 26 may be combined with any of Examples 24-25 and further includes quasi-co-location, QCL, information of the PCICH is based on a synchronization signal block (SSB) resource or a channel state information reference signal (CSI-RS) resource with regard to at least one of: an average delay, a delay spread, a Doppler shift, a Doppler spread, a spatial reception parameters, or an average gain; wherein the transmitting the PDCCH indication is based on the QCL information.
  • SSB synchronization signal block
  • CSI-RS channel state information reference signal
  • Example 27 may be combined with any of Examples 24-26 and further includes multiple sequences are pre-defined or configured for the PCICH.
  • Example 28 is an apparatus for wireless communication comprising a transceiver, a memory, and a processor coupled to the memory and the transceiver, the apparatus being configured to implement a method as in any of claims 1-27.
  • Example 29 is an apparatus for wireless communication including means for implementing a method as in any of examples 1-27.
  • Example 30 is a non-transitory computer-readable medium storing computer executable code, the code when executed by a processor causes the processor to implement a method as in any of examples 1-27.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente divulgation concerne des systèmes, des dispositifs, un appareil et des procédés, y compris des programmes d'ordinateur codés sur des supports de stockage pour une détection de PDCCH. Un UE (102) reçoit (304), en provenance d'une entité de réseau (104), une configuration configurant une ressource de domaine temporel et une ressource de domaine fréquentiel pour un canal DL pour transporter une indication de PDCCH. L'UE (102) reçoit (306), en provenance de l'entité de réseau (104), l'indication de PDCCH sur le canal DL indiquant au moins un emplacement de PDCCH et au moins une émission de PDCCH sur l'au moins un emplacement de PDCCH. L'UE (102) communique (308), avec l'entité de réseau (104), sur la base de DCI dans la ou les émissions de PDCCH.
PCT/CN2024/112896 2024-08-16 2024-08-16 Économie d'énergie d'équipement utilisateur pour détection de canal physique de commande de liaison descendante Pending WO2026036403A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120250641A1 (en) * 2011-04-01 2012-10-04 Futurewei Technologies, Inc. System and Method for Signaling a Location of a Control Channel
CN103037511A (zh) * 2011-09-30 2013-04-10 中国移动通信集团公司 一种增强下行控制信道资源的指示方法、系统和设备
US20140192753A1 (en) * 2011-07-20 2014-07-10 Lg Electronics Inc. Method and apparatus for allocating enhanced physical downlink control channel in wireless access system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120250641A1 (en) * 2011-04-01 2012-10-04 Futurewei Technologies, Inc. System and Method for Signaling a Location of a Control Channel
US20140192753A1 (en) * 2011-07-20 2014-07-10 Lg Electronics Inc. Method and apparatus for allocating enhanced physical downlink control channel in wireless access system
CN103037511A (zh) * 2011-09-30 2013-04-10 中国移动通信集团公司 一种增强下行控制信道资源的指示方法、系统和设备

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