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WO2023010274A1 - Procédés et appareil de détermination d'un ensemble de signaux de référence de détection de défaillance de faisceau spécifique de trp - Google Patents

Procédés et appareil de détermination d'un ensemble de signaux de référence de détection de défaillance de faisceau spécifique de trp Download PDF

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Publication number
WO2023010274A1
WO2023010274A1 PCT/CN2021/110278 CN2021110278W WO2023010274A1 WO 2023010274 A1 WO2023010274 A1 WO 2023010274A1 CN 2021110278 W CN2021110278 W CN 2021110278W WO 2023010274 A1 WO2023010274 A1 WO 2023010274A1
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Prior art keywords
bfd
tci
tci state
coresets
states
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PCT/CN2021/110278
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English (en)
Inventor
Wei Ling
Chenxi Zhu
Bingchao LIU
Yi Zhang
Lingling Xiao
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Lenovo Beijing Ltd
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Lenovo Beijing Ltd
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Priority to PCT/CN2021/110278 priority Critical patent/WO2023010274A1/fr
Publication of WO2023010274A1 publication Critical patent/WO2023010274A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

Definitions

  • the subject matter disclosed herein relates generally to wireless communication and more particularly relates to, but not limited to, methods and apparatus of determining Transmit Receive Point-specific (TRP-specific) Beam Failure Detection Reference Signal (BFD-RS) set in the case where at least one Control Resource Set (CORESET) is activated with two Transmission Configuration Indication (TCI) states.
  • TRP-specific Receive Point-specific Beam Failure Detection Reference Signal
  • BFD-RS Beam Failure Detection Reference Signal
  • CORESET Control Resource Set
  • TCI Transmission Configuration Indication
  • 5G Fifth Generation Partnership Project
  • 5G New Radio
  • NR New Radio
  • LTE Long Term Evolution
  • LTE-A LTE Advanced
  • eNB E-UTRAN Node B /Evolved Node B
  • UMTS Universal Mobile Telecommunications System
  • WiMAX Worldwide Interoperability for Microwave Access
  • E-UTRAN Evolved UMTS Terrestrial Radio Access Network
  • WLAN Wireless Local Area Networking
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single-Carrier Frequency-Division Multiple Access
  • DL Downlink
  • UL Uplink
  • UL User Entity/Equipment
  • UE Network Equipment
  • RAT Radio Access Technology
  • RX Receive or Receiver
  • TX Transmit or Transmitter
  • a wireless mobile network may provide a seamless wireless communication service to a wireless communication terminal having mobility, i.e., user equipment (UE) .
  • the wireless mobile network may be formed of a plurality of base stations and a base station may perform wireless communication with the UEs.
  • the 5G New Radio is the latest in the series of 3GPP standards which supports very high data rate with lower latency compared to its predecessor LTE (4G) technology.
  • Two types of frequency range (FR) are defined in 3GPP. Frequency of sub-6 GHz range (from 450 to 6000 MHz) is called FR1 and millimeter wave range (from 24.25 GHz to 52.6 GHz) is called FR2.
  • FR1 Frequency of sub-6 GHz range (from 450 to 6000 MHz)
  • millimeter wave range from 24.25 GHz to 52.6 GHz
  • the 5G NR supports both FR1 and FR2 frequency bands.
  • a TRP is an apparatus to transmit and receive signals, and is controlled by a gNB through the backhaul between the gNB and the TRP.
  • a TRP may also be referred to as a transmitting-receiving identity, or simply an identity.
  • Physical Downlink Control Channel In current NR system, Physical Downlink Control Channel (PDCCH) is transmitted from a single TRP. With multiple TRPs, time-frequency resources for PDCCH transmission may be from multiple TRPs. The spatial diversity may be exploited in addition to the time-frequency diversity.
  • Enhanced Physical Downlink Control Channel ePDCCH
  • ePDCCH can be transmitted with multiple repetition from multiple TRPs to improve PDCCH transmission reliability and robustness. Multiple transmissions of the ePDCCH may be transmitted from a same TRP or some different TRPs.
  • TRP-specific BFD-RS set in the case where at least one CORESET is activated with two TCI states are disclosed.
  • a method including: receiving, by a receiver, a configuration of Control Resource Sets (CORESETs) in a Bandwidth Part (BWP) of a serving cell, wherein at least one CORESET is activated with two Transmission Configuration Indication (TCI) states; and determining, by a processor, two Beam Failure Detection Reference Signal (BFD-RS) sets based on the two TCI states of the at least one CORESET.
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • BFD-RS Beam Failure Detection Reference Signal
  • a method including: transmitting, by a transmitter, a configuration of Control Resource Sets (CORESETs) in a Bandwidth Part (BWP) of a serving cell, wherein at least one CORESET is activated with two Transmission Configuration Indication (TCI) states; and determining, by a processor, two Beam Failure Detection Reference Signal (BFD-RS) sets based on the two TCI states of the at least one CORESET.
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • BFD-RS Beam Failure Detection Reference Signal
  • an apparatus including: a receiver that receives a configuration of Control Resource Sets (CORESETs) in a Bandwidth Part (BWP) of a serving cell, wherein at least one CORESET is activated with two Transmission Configuration Indication (TCI) states; and a processor that determines two Beam Failure Detection Reference Signal (BFD-RS) sets based on the two TCI states of the at least one CORESET.
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • BFD-RS Beam Failure Detection Reference Signal
  • an apparatus including: a transmitter that transmits a configuration of Control Resource Sets (CORESETs) in a Bandwidth Part (BWP) of a serving cell, wherein at least one CORESET is activated with two Transmission Configuration Indication (TCI) states; and a processor that determines two Beam Failure Detection Reference Signal (BFD-RS) sets based on the two TCI states of the at least one CORESET.
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • BFD-RS Beam Failure Detection Reference Signal
  • Figure 1 is a schematic diagram illustrating a wireless communication system in accordance with some implementations of the present disclosure
  • FIG. 2 is a schematic block diagram illustrating components of user equipment (UE) in accordance with some implementations of the present disclosure
  • FIG. 3 is a schematic block diagram illustrating components of network equipment (NE) in accordance with some implementations of the present disclosure
  • Figure 4 is a schematic diagram illustrating an example of MAC CE activating one TCI state for a CORESET in accordance with some implementations of the present disclosure
  • Figure 5 is a schematic diagram illustrating an example of MAC CE activating two TCI state for a CORESET in accordance with some implementations of the present disclosure
  • Figure 6A is a schematic diagram illustrating an example of CORESETs with the activated TCI states in accordance with some implementations of the present disclosure
  • Figure 6B is a schematic diagram illustrating an example of CORESETs with the activated TCI states which are associated with two TCI state groups in accordance with some implementations of the present disclosure
  • Figure 7 is a flow chart illustrating steps of monitoring enhanced PDCCH scheduling common information with multiple TRP transmission by UE in accordance with some implementations of the present disclosure.
  • Figure 8 is a flow chart illustrating steps of monitoring enhanced PDCCH scheduling common information with multiple TRP transmission by gNB or NE in accordance with some implementations of the present disclosure.
  • embodiments may be embodied as a system, an apparatus, a method, or a program product. Accordingly, embodiments may take the form of an all-hardware embodiment, an all-software embodiment (including firmware, resident software, micro-code, etc. ) or an embodiment combining software and hardware aspects.
  • one or more embodiments may take the form of a program product embodied in one or more computer readable storage devices storing machine readable code, computer readable code, and/or program code, referred to hereafter as “code. ”
  • code computer readable code
  • the storage devices may be tangible, non-transitory, and/or non-transmission.
  • references throughout this specification to “one embodiment, ” “an embodiment, ” “an example, ” “some embodiments, ” “some examples, ” or similar language means that a particular feature, structure, or characteristic described is included in at least one embodiment or example.
  • instances of the phrases “in one embodiment, ” “in an example, ” “in some embodiments, ” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment (s) . It may or may not include all the embodiments disclosed.
  • Features, structures, elements, or characteristics described in connection with one or some embodiments are also applicable to other embodiments, unless expressly specified otherwise.
  • the terms “including, ” “comprising, ” “having, ” and variations thereof mean “including but not limited to, ” unless expressly specified otherwise.
  • first, ” “second, ” “third, ” and etc. are all used as nomenclature only for references to relevant devices, components, procedural steps, and etc. without implying any spatial or chronological orders, unless expressly specified otherwise.
  • a “first device” and a “second device” may refer to two separately formed devices, or two parts or components of the same device. In some cases, for example, a “first device” and a “second device” may be identical, and may be named arbitrarily.
  • a “first step” of a method or process may be carried or performed after, or simultaneously with, a “second step. ”
  • a and/or B may refer to any one of the following three combinations: existence of A only, existence of B only, and co-existence of both A and B.
  • the character “/” generally indicates an “or” relationship of the associated items. This, however, may also include an “and” relationship of the associated items.
  • A/B means “A or B, ” which may also include the co-existence of both A and B, unless the context indicates otherwise.
  • the code may also be stored in a storage device that can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions stored in the storage device produce an article of manufacture including instructions which implement the function or act specified in the schematic flowchart diagrams and/or schematic block diagrams.
  • each block in the schematic flowchart diagrams and/or schematic block diagrams may represent a module, segment, or portion of code, which includes one or more executable instructions of the code for implementing the specified logical function (s) .
  • the flowchart diagrams need not necessarily be practiced in the sequence shown and are able to be practiced without one or more of the specific steps, or with other steps not shown.
  • Figure 1 is a schematic diagram illustrating a wireless communication system. It depicts an embodiment of a wireless communication system 100.
  • the wireless communication system 100 may include a user equipment (UE) 102 and a network equipment (NE) 104. Even though a specific number of UEs 102 and NEs 104 is depicted in Figure 1, one skilled in the art will recognize that any number of UEs 102 and NEs 104 may be included in the wireless communication system 100.
  • UE user equipment
  • NE network equipment
  • the UEs 102 may be referred to as remote devices, remote units, subscriber units, mobiles, mobile stations, users, terminals, mobile terminals, fixed terminals, subscriber stations, user terminals, apparatus, devices, or by other terminology used in the art.
  • the UEs 102 may be autonomous sensor devices, alarm devices, actuator devices, remote control devices, or the like.
  • the UEs 102 may include computing devices, such as desktop computers, laptop computers, personal digital assistants (PDAs) , tablet computers, smart phones, smart televisions (e.g., televisions connected to the Internet) , set-top boxes, game consoles, security systems (including security cameras) , vehicle on-board computers, network devices (e.g., routers, switches, modems) , or the like.
  • the UEs 102 include wearable devices, such as smart watches, fitness bands, optical head-mounted displays, or the like. The UEs 102 may communicate directly with one or more of the NEs 104.
  • the NE 104 may also be referred to as a base station, an access point, an access terminal, a base, a Node-B, an eNB, a gNB, a Home Node-B, a relay node, an apparatus, a device, or by any other terminology used in the art.
  • a reference to a base station may refer to any one of the above referenced types of the network equipment 104, such as the eNB and the gNB.
  • the NEs 104 may be distributed over a geographic region.
  • the NE 104 is generally part of a radio access network that includes one or more controllers communicably coupled to one or more corresponding NEs 104.
  • the radio access network is generally communicably coupled to one or more core networks, which may be coupled to other networks, like the Internet and public switched telephone networks. These and other elements of radio access and core networks are not illustrated, but are well known generally by those having ordinary skill in the art.
  • the wireless communication system 100 is compliant with a 3GPP 5G new radio (NR) .
  • the wireless communication system 100 is compliant with a 3GPP protocol, where the NEs 104 transmit using an OFDM modulation scheme on the DL and the UEs 102 transmit on the uplink (UL) using a SC-FDMA scheme or an OFDM scheme.
  • the wireless communication system 100 may implement some other open or proprietary communication protocols, for example, WiMAX.
  • WiMAX open or proprietary communication protocols
  • the NE 104 may serve a number of UEs 102 within a serving area, for example, a cell (or a cell sector) or more cells via a wireless communication link.
  • the NE 104 transmits DL communication signals to serve the UEs 102 in the time, frequency, and/or spatial domain.
  • Communication links are provided between the NE 104 and the UEs 102a, 102b, 102c, and 102d, which may be NR UL or DL communication links, for example. Some UEs 102 may simultaneously communicate with different Radio Access Technologies (RATs) , such as NR and LTE. Direct or indirect communication link between two or more NEs 104 may be provided.
  • RATs Radio Access Technologies
  • the NE 104 may also include one or more transmit receive points (TRPs) 104a.
  • the network equipment may be a gNB 104 that controls a number of TRPs 104a.
  • the network equipment may be a TRP 104a that is controlled by a gNB.
  • Communication links are provided between the NEs 104, 104a and the UEs 102, 102a, respectively, which, for example, may be NR UL/DL communication links. Some UEs 102, 102a may simultaneously communicate with different Radio Access Technologies (RATs) , such as NR and LTE.
  • RATs Radio Access Technologies
  • the UE 102a may be able to communicate with two or more TRPs 104a that utilize a non-ideal backhaul, simultaneously.
  • a TRP may be a transmission point of a gNB. Multiple beams may be used by the UE and/or TRP (s) .
  • the two or more TRPs may be TRPs of different gNBs, or a same gNB. That is, different TRPs may have the same Cell-ID or different Cell-IDs.
  • TRP and “transmitting-receiving identity” may be used interchangeably throughout the disclosure.
  • the technology disclosed may be applicable to scenarios with multiple TRPs or without multiple TRPs, as long as multiple PDCCH transmissions are supported.
  • FIG. 2 is a schematic block diagram illustrating components of user equipment (UE) according to one embodiment.
  • a UE 200 may include a processor 202, a memory 204, an input device 206, a display 208, and a transceiver 210.
  • the input device 206 and the display 208 are combined into a single device, such as a touchscreen.
  • the UE 200 may not include any input device 206 and/or display 208.
  • the UE 200 may include one or more processors 202 and may not include the input device 206 and/or the display 208.
  • the processor 202 may include any known controller capable of executing computer-readable instructions and/or capable of performing logical operations.
  • the processor 202 may be a microcontroller, a microprocessor, a central processing unit (CPU) , a graphics processing unit (GPU) , an auxiliary processing unit, a field programmable gate array (FPGA) , or similar programmable controller.
  • the processor 202 executes instructions stored in the memory 204 to perform the methods and routines described herein.
  • the processor 202 is communicatively coupled to the memory 204 and the transceiver 210.
  • the memory 204 in one embodiment, is a computer readable storage medium.
  • the memory 204 includes volatile computer storage media.
  • the memory 204 may include a RAM, including dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , and/or static RAM (SRAM) .
  • the memory 204 includes non-volatile computer storage media.
  • the memory 204 may include a hard disk drive, a flash memory, or any other suitable non-volatile computer storage device.
  • the memory 204 includes both volatile and non-volatile computer storage media.
  • the memory 204 stores data relating to trigger conditions for transmitting the measurement report to the network equipment.
  • the memory 204 also stores program code and related data.
  • the input device 206 may include any known computer input device including a touch panel, a button, a keyboard, a stylus, a microphone, or the like.
  • the input device 206 may be integrated with the display 208, for example, as a touchscreen or similar touch-sensitive display.
  • the display 208 may include any known electronically controllable display or display device.
  • the display 208 may be designed to output visual, audio, and/or haptic signals.
  • the transceiver 210 in one embodiment, is configured to communicate wirelessly with the network equipment.
  • the transceiver 210 comprises a transmitter 212 and a receiver 214.
  • the transmitter 212 is used to transmit UL communication signals to the network equipment and the receiver 214 is used to receive DL communication signals from the network equipment.
  • the transmitter 212 and the receiver 214 may be any suitable type of transmitters and receivers. Although only one transmitter 212 and one receiver 214 are illustrated, the transceiver 210 may have any suitable number of transmitters 212 and receivers 214.
  • the UE 200 includes a plurality of the transmitter 212 and the receiver 214 pairs for communicating on a plurality of wireless networks and/or radio frequency bands, with each of the transmitter 212 and the receiver 214 pairs configured to communicate on a different wireless network and/or radio frequency band.
  • FIG. 3 is a schematic block diagram illustrating components of network equipment (NE) 300 according to one embodiment.
  • the NE 300 may include a processor 302, a memory 304, an input device 306, a display 308, and a transceiver 310.
  • the processor 302, the memory 304, the input device 306, the display 308, and the transceiver 310 may be similar to the processor 202, the memory 204, the input device 206, the display 208, and the transceiver 210 of the UE 200, respectively.
  • the processor 302 controls the transceiver 310 to transmit DL signals or data to the UE 200.
  • the processor 302 may also control the transceiver 310 to receive UL signals or data from the UE 200.
  • the processor 302 may control the transceiver 310 to transmit DL signals containing various configuration data to the UE 200.
  • the transceiver 310 comprises a transmitter 312 and a receiver 314.
  • the transmitter 312 is used to transmit DL communication signals to the UE 200 and the receiver 314 is used to receive UL communication signals from the UE 200.
  • the transceiver 310 may communicate simultaneously with a plurality of UEs 200.
  • the transmitter 312 may transmit DL communication signals to the UE 200.
  • the receiver 314 may simultaneously receive UL communication signals from the UE 200.
  • the transmitter 312 and the receiver 314 may be any suitable type of transmitters and receivers. Although only one transmitter 312 and one receiver 314 are illustrated, the transceiver 310 may have any suitable number of transmitters 312 and receivers 314.
  • the NE 300 may serve multiple cells and/or cell sectors, where the transceiver 310 includes a transmitter 312 and a receiver 314 for each cell or cell sector.
  • a UE can be provided, for each BWP of a serving cell, a set of periodic CSI-RS resource configuration indexes by failureDetectionResources and a set of periodic CSI-RS resource configuration indexes and/or SS/PBCH block indexes by candidateBeamRSList or candidateBeamRSListExt-r16 or candidateBeamRSSCellList-r16 for radio link quality measurements on the BWP of the serving cell.
  • the UE determines the set to include periodic CSI-RS resource configuration indexes with same values as the RS indexes in the RS sets indicated by TCI-State for respective CORESETs that the UE uses for monitoring PDCCH and, if there are two RS indexes in a TCI state, the set includes RS indexes with QCL-TypeD configuration for the corresponding TCI states.
  • the UE expects the set to include up to two RS indexes.
  • the UE expects single port RS in the set
  • the UE expects single-port or two-port CSI-RS with frequency density equal to 1 or 3 REs per RB in the set
  • BFD-RS set can be configured explicitly or implicitly; and when BFD-RS set is not configured explicitly by (Radio Resource Control) RRC, BFD-RS set is implicitly determined according to the TCI states of CORESETs in the activated BWP.
  • RRC Radio Resource Control
  • BFD-RS set is implicitly determined according to the TCI states of CORESETs in the activated BWP.
  • Release 16 only one TCI state is activated for a CORESET, and the TCI state of the CORESET can only be associated with one BFD-RS set.
  • one CORESET can be activated with two TCI states which may be associated with two TRPs.
  • TRP-specific Beam Failure Recovery (BFR) is proposed and agreed to be supported, and it is designed based on R16 SCell BFR scheme.
  • BFR Beam Failure Recovery
  • two BFD-RS sets are configured where each BFD-RS set is associated with one TRP. Since a CORESET can be activated with two TCI states which may be associated with two TRPs in Release 17 HST scenario, the two TCI states of the CORESET are associated with the two TRPs which may be associated with two different BFD-RS sets.
  • exemplary methods are proposed to determine TRP-specific BFD-RS set in the case where at least one CORESET is activated with two TCI states. Specifically, methods of determining two BFD-RS sets in an implicit manner in TRP-specific BFR are proposed.
  • MAC CE for CORESET TCI state activation is enhanced to further indicate with which BFD-RS set the activated TCI state (s) is associated.
  • TCI State Indication for MAC CE 410 has a size of 24 bits with following fields.
  • - Serving Cell ID 411 This field indicates the identity of the Serving Cell for which the MAC CE applies. The length of the field is 5 bits. If the indicated Serving Cell is configured as part of a simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2 as specified in TS 38.331, this MAC CE applies to all theServing Cells in the set simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2, respectively;
  • This field indicates a Control Resource Set identified with ControlResourceSetId as specified in TS 38.331, for which the TCI State is being indicated. In case the value of the field is 0, the field refers to the Control Resource Set configured by controlResourceSetZero as specified in TS 38.331.
  • the length of the field is 4 bits;
  • TCI State ID 413 This field indicates the TCI state identified by TCI-StateId as specified in TS 38.331 applicable to the Control Resource Set identified by CORESET ID field. If the field of CORESET ID is set to 0, this field indicates a TCI-StateId for a TCI state of the first 64 TCI-states configured by tci-States-ToAddModList and tci-States-ToReleaseList in the PDSCH-Config in the active BWP.
  • this field indicates a TCI-StateId configured by tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList in the controlResourceSet identified by the indicated CORESET ID.
  • the length of the field is 7 bits.
  • TCI State Indication for MAC CE 510 has a size of 24 bits with following fields.
  • This field indicates the identity of the Serving Cell for which the MAC CE applies.
  • the length of the field is 5 bits. If the indicated Serving Cell is configured as part of a simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2 as specified in TS 38.331, this MAC CE applies to all theServing Cells in the set simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2, respectively;
  • This field indicates a Control Resource Set identified with ControlResourceSetId as specified in TS 38.331, for which the TCI State is being indicated. In case the value of the field is 0, the field refers to the Control Resource Set configured by controlResourceSetZero as specified in TS 38.331.
  • the length of the field is 4 bits;
  • this field indicates a TCI-StateId configured by tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList in the controlResourceSet identified by the indicated CORESET ID.
  • the length of the field is 7 bits.
  • the MAC CE 410 for activating one TCI state of a CORESET includes an indication (i.e., the field of C 415) to indicate that the TCI state is associated with a BFD-RS set of the two BFD-RS sets; and the MAC CE 510 for activating a first TCI state and a second TCI state of a CORESET includes an indication (i.e., the field of C 515) to indicate that the first TCI state is associated with one BFD-RS set of the two BFD-RS sets and the second TCI state is associated with the other BFD-RS set of the two BFD-RS sets.
  • each TCI state of CORESETs can be associated with one BFD-RS set of two BFD-RS sets according to CORESETs’ TCI state activation MAC CEs as shown in Figure 4 and/or Figure 5. Therefore, the BFD-RS set with a lower index (i.e., a first BFD-RS set) is determined according to the TCI states of CORESETs which are associated with the BFD-RS set with a lower index, and the BFD-RS set with a higher index (i.e., a second BFR-RS set) is determined according to the TCI states of CORESETs which are associated with the BFD-RS set with a higher index.
  • a lower index i.e., a first BFD-RS set
  • the BFD-RS set with a higher index i.e., a second BFR-RS set
  • FIG. 6A For illustration (example 1) , an exemplary scenario as shown in Figure 6A is used.
  • CORESET 0 610 is activated with TCI state 1 611
  • CORESET 1 620 is activated with TCI state 2 621 and TCI state 3 622
  • CORESET 2 630 is activated with TCI state 4 631 and TCI state 5 632.
  • CORESET 0 610 is activated with TCI state 1 611 where the field C of the TCI activation MAC CE of CORESET 0 is ‘0’ , which indicates that TCI state 1 611 is associated with BFD-RS set 0.
  • CORESET 1 620 is activated with TCI state 2 621 and TCI state 3 622 where the field C 415 of the TCI activation MAC CE of CORESET 1 is ‘0’ , which indicates that TCI state 2 621 and TCI state 3 622 are associated with BFD-RS set 0 and BFD-RS set 1, respectively.
  • CORESET 2 630 is activated with TCI state 4 631 and TCI state 5 632 where the field C 415 of the TCI state activation MAC CE of CORESET 2 is ‘1’ , which indicates that TCI state 4 631 and TCI state 5 632 are associated with BFD-RS set 1 and BFD-RS set 0, respectively.
  • TCI state 1 611, TCI state 2 621 and TCI state 5 632 are associated with BFD-RS set 0, and TCI state 3 622 and TCI state 4 631 are associated with BFD-RS set 1.
  • BFD-RS set 0 is determined according to TCI state 1 611, TCI state 2 621 and TCI state 5 632; and BFD-RS set 1 is determined according to TCI state 3 622 and TCI state 4 631.
  • the MAC CE for activating a first TCI state and a second TCI state of a CORESET includes an indication (i.e., the field of C 515) to indicate that the first TCI state is associated with one BFD-RS set of the two BFD-RS sets and the second TCI state is associated with the other BFD-RS set of the two BFD-RS sets.
  • each TCI state of CORESETs which are activated with two TCI states can be associated with one BFD-RS set of two BFD-RS sets according to these CORESETs’ TCI state activation MAC CEs, an example of which is illustrated in Figure 5. Therefore, the BFD-RS set with a lower index (i.e., a first BFD-RS set) is determined according to the TCI states of CORESETs activated with two TCI states which are associated with the BFD-RS set with a lower index, and the BFD-RS set with a higher index (i.e., a second BFR-RS set) is determined according to the TCI states of CORESETs activated with two TCI states which are associated with the BFD-RS set with a higher index.
  • a lower index i.e., a first BFD-RS set
  • the BFD-RS set with a higher index i.e., a second BFR-RS set
  • Example 2 For illustration (example 2) , a similar scenario as shown in Figure 6A is used, where CORESET 0 610 is activated with TCI state 1 611; CORESET 1 620 is activated with TCI state 2 621 and TCI state 3 622; and CORESET 2 630 is activated with TCI state 4 631 and TCI state 5 632.
  • TCI activation MAC CEs of CORESET 1 620 and CORSET 2 630 include the indication (i.e., the field of C 515) .
  • CORESET 0 610 is activated with TCI state 1 611.
  • CORESET 1 620 is activated with TCI state 2 621 and TCI state 3 622 where the field C 515 of the TCI activation MAC CE of CORESET 1 is ‘0’ , which indicates that TCI state 2 621 and TCI state 3 622 are associated with BFD-RS set 0 and BFD-RS set 1, respectively.
  • CORESET 2 630 is activated with TCI state 4 631 and TCI state 5 632 where the field C 515 of the TCI state activation MAC CE of CORESET 2 is ‘1’ , which indicates that TCI state 4 631 and TCI state 5 632 are associated with BFD-RS set 1 and BFD-RS set 0, respectively.
  • TCI state 2 621 and TCI state 5 632 are associated with BFD-RS set 0, and TCI state 3 622 and TCI state 4 631 are associated with BFD-RS set 1.
  • BFD-RS set 0 is determined according to TCI state 2 621 and TCI state 5 632; and BFD-RS set 1 is determined according to TCI state 3 622 and TCI state 4 631.
  • the TCI states of CORESETs may be grouped into two groups by RRC signaling, where each group is one-to-one associated with one BFD-RS set of two BFD-RS sets.
  • the BFD-RS sets are determined based on TCI states which are associated with the same TCI state group associated with the respective BFD-RS sets.
  • the grouping of TCI states of CORESETs may be realized in various manners.
  • two TCI state groups are RRC configured, where each TCI state of any CORESET is included in one TCI state group.
  • each TCI state of any CORESET is configured with a TCI state group index, which is a newly introduced RRC parameter.
  • a TCI state group is a set of TCI states that are associated with the same BFD-RS set.
  • the first TCI state group is associated with the first BFD-RS set and the second TCI state group is associated with the second BFD-RS set. Then, in the case where RS of CORESETs with both single and two TCI states are used is selected for TRP-specific BFD-RS set determination, the first BFD-RS set is determined according to the TCI states associated with the first TCI state group of all CORESETs, and the second BFD-RS set is determined according to the TCI states associated with the second TCI state group of all CORESETs.
  • the first BFD-RS set is determined according to the TCI states associated with the first TCI state group of CORESETs activated with two TCI states
  • the second BFD-RS set is determined according to the TCI states associated with the second TCI state group of CORESETs activated with two TCI states.
  • FIG. 6B For illustration (example 3) , an exemplary scenario as shown in Figure 6B is used. Similar to Figure 6A, in Figure 6B, CORESET 0 610 is activated with TCI state 1 611; CORESET 1 620 is activated with TCI state 2 621 and TCI state 3 622; and CORESET 2 630 is activated with TCI state 4 631 and TCI state 5 632.
  • the TCI sates are grouped into TCI state groups.
  • CORESET 0 610 is activated with TCI state 1 611 where TCI state 1 611 is associated with TCI state group 1 642.
  • CORESET 1 620 is activated with TCI state 2 621 and TCI state 3 622 where TCI state 2 621 and TCI state 3 622 are associated with TCI state group 0 641 and TCI state group 1 642, respectively.
  • CORESET 2 630 is activated with TCI state 4 631 and TCI state 5 632 are associated with TCI state group 1 642 and TCI state group 0 641, respectively.
  • TCI state 2 621 and TCI state 5 632 are associated with TCI state group 0 641
  • TCI state 1 611, TCI state 3 622 and TCI state 4 631 are associated with TCI state group 1 642.
  • TCI state group 0 641 and TCI state group 1 642 are associated with BFD-RS set 0 and BFD-RS set 1, respectively.
  • BFD-RS set 0 is determined according to TCI state 2 621 and TCI state 5 632; and BFD-RS set 1 is determined according to TCI state 1 611, TCI state 3 622 and TCI state 4 631 in the case where RS of CORESETs with both single and two TCI states are used is selected for TRP-specific BFD-RS set determination.
  • BFD-RS set 0 is determined according to TCI state 2 621 and TCI state 5 632; and BFD-RS set 1 is determined according to TCI state 3 622 and TCI state 4 631 in the case where RS of CORESETs with only two TCI states are used is selected for TRP-specific BFD-RS set determination.
  • two BFD-RS sets are determined by TCI states of CORESETs by a predefined rule.
  • RS of CORESETs with both single and two TCI states are used is selected for TRP-specific BFD-RS set determination
  • one example of the rules may be set as follows.
  • All TCI states of CORESETs activated with only one TCI state is associated with the BFD-RS set with a lower index; the first TCI state of any CORESET activated with two TCI states is associated with the BFD-RS set with a lower index and the second TCI state of any CORESET activated with two TCI states is associated with the BFD-RS set with a higher index.
  • gNB In order to make sure all TCI states of CORESETs activated with only one TCI state and the first TCI states of all CORESETs activated with two TCI states are associated with the BFD-RS set with a lower index, it is gNB’s implementation to activate the TCI states of CORESETs activated with only one TCI state associated with one BFD-RS set with a lower index and to activate the first TCI state and second TCI state of any CORESET activated with two TCI states associated with one BFD-RS set with a lower index and one BFD-RS set with a higher index, respectively.
  • Example 4 For illustration (example 4) , a similar scenario as shown in Figure 6A is used, where CORESET 0 610 is activated with TCI state 1 611; CORESET 1 620 is activated with TCI state 2 621 and TCI state 3 622; and CORESET 2 630 is activated with TCI state 4 631 and TCI state 5 632.
  • TCI state 1 611, TCI state 2 621 and TCI state 4 631 are associated with BFD-RS set 0 (i.e., the BFD-RS set with a lower index)
  • TCI state 3 622 and TCI state 5 632 are associated with BFD-RS set 1 (i.e., the BFD-RS set with a higher index)
  • BFD-RS set 0 is determined according to TCI state 1 611, TCI state 2 621 and TCI state 4 631
  • BFD-RS set 1 is determined according to TCI state 3 622 and TCI state 5 632.
  • TRP-specific BFD-RS set determination In the case where RS of CORESETs with only two TCI states are used is selected for TRP-specific BFD-RS set determination, one example of the rules may be set as follows.
  • the first TCI state of any CORESET activated with two TCI states is associated with a BFD-RS set with a lower index and the second TCI state of any CORESET activated with two TCI states is associated with a BFD-RS set with a higher index.
  • Example 5 For illustration (example 5) , a similar scenario as shown in Figure 6A is used, where CORESET 0 610 is activated with TCI state 1 611; CORESET 1 620 is activated with TCI state 2 621 and TCI state 3 622; and CORESET 2 630 is activated with TCI state 4 631 and TCI state 5 632.
  • TCI state 2 621 and TCI state 4 631 are associated with BFD-RS set 0, and TCI state 3 622 and TCI state 5 632 are associated with BFD-RS set 1.
  • BFD-RS set 0 is determined according to TCI state 2 621 and TCI state 4 631; and BFD-RS set 1 is determined according to TCI state 3 622 and TCI state 5 632.
  • Figure 7 is a flow chart illustrating steps of determining TRP-specific BFD-RS set in the case where at least one CORESET is activated with two TCI states by UE 200 in accordance with some implementations of the present disclosure.
  • the receiver 214 of UE 200 receives a configuration of Control Resource Sets (CORESETs) in a Bandwidth Part (BWP) of a serving cell, wherein at least one CORESET is activated with two Transmission Configuration Indication (TCI) states.
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • the processor 202 of UE 200 determines two Beam Failure Detection Reference Signal (BFD-RS) sets based on the two TCI states of the at least one CORESET.
  • BFD-RS Beam Failure Detection Reference Signal
  • Figure 8 is a flow chart illustrating steps of determining TRP-specific BFD-RS set in the case where at least one CORESET is activated with two TCI states by gNB or NE 300 in accordance with some implementations of the present disclosure.
  • the transmitter 312 of NE 300 transmits a configuration of Control Resource Sets (CORESETs) in a Bandwidth Part (BWP) of a serving cell, wherein at least one CORESET is activated with two Transmission Configuration Indication (TCI) states.
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • the processor 302 of NE 300 determines two Beam Failure Detection Reference Signal (BFD-RS) sets based on the two TCI states of the at least one CORESET.
  • BFD-RS Beam Failure Detection Reference Signal
  • a method comprising:
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • BFD-RS Beam Failure Detection Reference Signal
  • the receiver further receives a second MAC CE for activating a first TCI state and a second TCI state of a CORESET, the second MAC CE comprising an indication to indicate that the first TCI state is associated with one BFD-RS set of the two BFD-RS sets and the second TCI state is associated with the other BFD-RS set of the two BFD-RS sets.
  • the processor determines a first BFD-RS set based on TCI states associated with one TCI state group associated with the first BFD-RS set of CORESETs activated with two TCI states, and determines a second BFD-RS set based on TCI states associated with the other TCI state group associated with the second BFD-RS set of CORESETs activated with two TCI states.
  • a method comprising:
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • BFD-RS Beam Failure Detection Reference Signal
  • the transmitter further transmits a first MAC CE for activating one TCI state of a CORESET, the first MAC CE comprising an indication to indicate that the TCI state is associated with a BFD-RS set of the two BFD-RS sets.
  • the transmitter further transmits a second MAC CE for activating a first TCI state and a second TCI state of a CORESET, the second MAC CE comprising an indication to indicate that the first TCI state is associated with one BFD-RS set of the two BFD-RS sets and the second TCI state is associated with the other BFD-RS set of the two BFD-RS sets.
  • An apparatus comprising:
  • a receiver that receives a configuration of Control Resource Sets (CORESETs) in a Bandwidth Part (BWP) of a serving cell, wherein at least one CORESET is activated with two Transmission Configuration Indication (TCI) states; and
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • BFD-RS Beam Failure Detection Reference Signal
  • the receiver further receives a first MAC CE for activating one TCI state of a CORESET, the first MAC CE comprising an indication to indicate that the TCI state is associated with a BFD-RS set of the two BFD-RS sets.
  • the receiver further receives a second MAC CE for activating a first TCI state and a second TCI state of a CORESET, the second MAC CE comprising an indication to indicate that the first TCI state is associated with one BFD-RS set of the two BFD-RS sets and the second TCI state is associated with the other BFD-RS set of the two BFD-RS sets.
  • the processor determines a first BFD-RS set based on TCI states associated with one TCI state group associated with the first BFD-RS set of CORESETs activated with two TCI states, and determines a second BFD-RS set based on TCI states associated with the other TCI state group associated with the second BFD-RS set of CORESETs activated with two TCI states.
  • An apparatus comprising:
  • a transmitter that transmits a configuration of Control Resource Sets (CORESETs) in a Bandwidth Part (BWP) of a serving cell, wherein at least one CORESET is activated with two Transmission Configuration Indication (TCI) states; and
  • CORESETs Control Resource Sets
  • BWP Bandwidth Part
  • TCI Transmission Configuration Indication
  • BFD-RS Beam Failure Detection Reference Signal
  • the transmitter further transmits a first MAC CE for activating one TCI state of a CORESET, the first MAC CE comprising an indication to indicate that the TCI state is associated with a BFD-RS set of the two BFD-RS sets.
  • the transmitter further transmits a second MAC CE for activating a first TCI state and a second TCI state of a CORESET, the second MAC CE comprising an indication to indicate that the first TCI state is associated with one BFD-RS set of the two BFD-RS sets and the second TCI state is associated with the other BFD-RS set of the two BFD-RS sets.
  • the transmitter further transmits a signaling of two TCI state groups of the TCI states of the CORESETs, each TCI state group being one-to-one associated with a BFD-RS set of the two BFD-RS sets.
  • the apparatus of item 40 wherein the processor determines a first BFD-RS set based on TCI states which are associated with one TCI state group associated with the first BFD-RS set of CORESETs, and determines a second BFD-RS set based on TCI states which are associated with the other TCI state group associated with the second BFD-RS set of CORESETs.
  • the processor determines a first BFD-RS set based on TCI states associated with one TCI state group associated with the first BFD-RS set of CORESETs activated with two TCI states, and determines a second BFD-RS set based on TCI states associated with the other TCI state group associated with the second BFD-RS set of CORESETs activated with two TCI states.

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

Abstract

L'invention divulgue des procédés et un appareil de détermination d'un ensemble BFD-RS spécifique de TRP dans le cas où au moins un CORESET est activé avec deux états TCI. Le procédé comprend les étapes suivantes : recevoir, par un récepteur, une configuration d'ensembles de ressources de commande (CORESET) dans une partie de bande passante (BWP) d'une cellule de desserte, au moins un CORESET étant activé avec deux états d'indication de configuration de transmission (TCI) ; et déterminer, par un processeur, deux ensembles de signaux de référence de détection de défaillance de faisceau (BFD-RS) sur la base des deux états TCI dudit au moins un CORESET.
PCT/CN2021/110278 2021-08-03 2021-08-03 Procédés et appareil de détermination d'un ensemble de signaux de référence de détection de défaillance de faisceau spécifique de trp Ceased WO2023010274A1 (fr)

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