[go: up one dir, main page]

WO2025091344A1 - Dispositifs et procédés de communication - Google Patents

Dispositifs et procédés de communication Download PDF

Info

Publication number
WO2025091344A1
WO2025091344A1 PCT/CN2023/129160 CN2023129160W WO2025091344A1 WO 2025091344 A1 WO2025091344 A1 WO 2025091344A1 CN 2023129160 W CN2023129160 W CN 2023129160W WO 2025091344 A1 WO2025091344 A1 WO 2025091344A1
Authority
WO
WIPO (PCT)
Prior art keywords
psfch
terminal device
transmissions
receptions
perform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/129160
Other languages
English (en)
Inventor
Zhaobang MIAO
Jin Yang
Ying Zhao
Gang Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to PCT/CN2023/129160 priority Critical patent/WO2025091344A1/fr
Publication of WO2025091344A1 publication Critical patent/WO2025091344A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Definitions

  • Example embodiments of the present disclosure generally relate to the field of communication techniques and in particular, to devices and methods for physical sidelink feedback channel (PSFCH) transmissions and receptions.
  • PSFCH physical sidelink feedback channel
  • Wireless communication networks are widely deployed and can support various types of service applications for terminal devices.
  • Many communication schemes have been proposed to support the rapidly increasing data traffic.
  • SL sidelink
  • Sidelink communication may be understood as direct device-to-device communication as proposed for example in specifications for cellular communication.
  • the devices transmit SL control information associated with SL data on a physical sidelink control channel (PSCCH) , and transmit the SL data on a physical sidelink shared channel (PSSCH) based on the SL control information.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the physical sidelink feedback channel (PSFCH) is used to carry hybrid automatic repeat request (HARQ) feedback information from the receiving device to the transmitting device or to carry a conflict indication for an inter-UE coordination (IUC) scheme.
  • HARQ hybrid automatic repeat request
  • embodiments of the present disclosure provide a solution of PSFCH transmissions and receptions.
  • a terminal device comprising: a processor configured to cause the terminal device to: determine to perform a first set of physical sidelink feedback channel (PSFCH) transmissions, and in accordance with a determination that channel access procedures associated with all the PSFCH transmissions that provide hybrid automatic repeat request-acknowledgement (HARQ-ACK) information in the first set are failed and one or more PSFCH receptions in a second set of PSFCH receptions provide HARQ-ACK information, switch to perform at least one PSFCH reception in the second set, wherein the first set of PSFCH transmissions at least partially overlaps with the second set of PSFCH receptions in time domain.
  • PSFCH physical sidelink feedback channel
  • HARQ-ACK hybrid automatic repeat request-acknowledgement
  • a terminal device comprising: a processor configured to cause the terminal device to: in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain and a channel access procedure associated with a first PSFCH transmission in the first set is failed, perform at least one of the following: at least one PSFCH transmission in the first set, wherein at least one channel access procedure associated with the at least one PSFCH transmission is successful; or at least one PSFCH reception in the second set, wherein a priority value of the first PSFCH transmission is lower than any of a set of priorities of the second set of PSFCH receptions.
  • PSFCH physical sidelink feedback channel
  • a terminal device comprising: a processor configured to cause the terminal device to: in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain, perform a prioritization procedure among one of the following: the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the first set is successful, or a subset of the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the subset is successful.
  • PSFCH physical sidelink feedback channel
  • a network device comprising: a processor configured to cause the network device to: transmit, to a terminal device, configuration information indicating whether the terminal device is allowed to perform at least one PSFCH reception in a second set of PSFCH receptions in case that a channel access procedure associated with a fist PSFCH transmission in the first set of PSFCH transmissions is failed, wherein the first set of PSFCH transmissions is at least partially overlaps with the second set of PSFCH receptions in time domain.
  • a communication method performed by a terminal device.
  • the method comprises: determining to perform a first set of physical sidelink feedback channel (PSFCH) transmissions, and in accordance with a determination that channel access procedures associated with all the PSFCH transmissions that provide hybrid automatic repeat request-acknowledgement (HARQ-ACK) information in the first set are failed and one or more PSFCH receptions in a second set of PSFCH receptions provide HARQ-ACK information, switching to perform at least one PSFCH reception in the second set, wherein the first set of PSFCH transmissions at least partially overlaps with the second set of PSFCH receptions in time domain.
  • PSFCH physical sidelink feedback channel
  • HARQ-ACK hybrid automatic repeat request-acknowledgement
  • a communication method performed by a terminal device.
  • the method comprises: in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain and a channel access procedure associated with a first PSFCH transmission in the first set is failed, performing at least one of the following: at least one PSFCH transmission in the first set, wherein at least one channel access procedure associated with the at least one PSFCH transmission is successful; or at least one PSFCH reception in the second set, wherein a priority value of the first PSFCH transmission is lower than any of a set of priorities of the second set of PSFCH receptions.
  • PSFCH physical sidelink feedback channel
  • a communication method performed by a terminal device.
  • the method comprises: in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain, performing a prioritization procedure among one of the following: the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the first set is successful, or a subset of the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the subset is successful.
  • PSFCH physical sidelink feedback channel
  • a communication method performed by a network device.
  • the method comprises: transmitting, to a terminal device, configuration information indicating whether the terminal device is allowed to perform at least one PSFCH reception in a second set of PSFCH receptions in case that a channel access procedure associated with a fist PSFCH transmission in the first set of PSFCH transmissions is failed, wherein the first set of PSFCH transmissions is at least partially overlaps with the second set of PSFCH receptions in time domain.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to the fifth, sixth, seventh, or eighth aspect.
  • FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure can be implemented
  • FIGS. 2A to 2C illustrate examples of PSFCH transmission/reception
  • FIG. 3 illustrates a signaling flow of communication in accordance with some embodiments of the present disclosure
  • FIG. 4 illustrates a flowchart of a method implemented at a terminal device according to some example embodiments of the present disclosure
  • FIG. 5 illustrates a flowchart of a method implemented at a terminal device according to some example embodiments of the present disclosure
  • FIG. 6 illustrates a flowchart of a method implemented at a terminal device according to some example embodiments of the present disclosure
  • FIG. 7 illustrates a flowchart of a method implemented at a network device according to some example embodiments of the present disclosure.
  • FIG. 8 illustrates a simplified block diagram of an apparatus that is suitable for implementing example embodiments of the present disclosure.
  • terminal device refers to any device having wireless or wired communication capabilities.
  • the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, internet of things (IoT) devices, Ultra-reliable and Low Latency Communications (URLLC) devices, Internet of Everything (IoE) devices, machine type communication (MTC) devices, devices on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, devices for Integrated Access and Backhaul (IAB) , Space borne vehicles or Air borne vehicles in Non-terrestrial networks (NTN) including Satellites and High Altitude Platforms (HAPs) encompassing Unmanned Aircraft Systems (UAS) , eXtended Reality (XR) devices including different types of realities such as Augmented Reality (AR) , Mixed Reality (MR) and Virtual Reality (VR) , the unmanned aerial vehicle (UAV)
  • UE user equipment
  • the ‘terminal device’ can further have ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporate one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM.
  • SIM Subscriber Identity Module
  • the term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • network device refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , and the like.
  • NodeB Node B
  • eNodeB or eNB evolved NodeB
  • gNB next generation NodeB
  • TRP transmission reception point
  • RRU remote radio unit
  • RH radio head
  • RRH remote radio head
  • IAB node a low power node such as a fe
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • AI Artificial intelligence
  • Machine learning capability it generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g., FR1 (e.g., 450 MHz to 6000 MHz) , FR2 (e.g., 24.25GHz to 52.6GHz) , frequency band larger than 100 GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • FR1 e.g., 450 MHz to 6000 MHz
  • FR2 e.g., 24.25GHz to 52.6GHz
  • THz Tera Hertz
  • the terminal device may have more than one connection with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario.
  • MR-DC Multi-Radio Dual Connectivity
  • the terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.
  • the embodiments of the present disclosure may be performed in test equipment, e.g., signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator.
  • the terminal device may be connected with a first network device and a second network device.
  • One of the first network device and the second network device may be a master node and the other one may be a secondary node.
  • the first network device and the second network device may use different radio access technologies (RATs) .
  • the first network device may be a first RAT device and the second network device may be a second RAT device.
  • the first RAT device is eNB and the second RAT device is gNB.
  • Information related with different RATs may be transmitted to the terminal device from at least one of the first network device or the second network device.
  • first information may be transmitted to the terminal device from the first network device and second information may be transmitted to the terminal device from the second network device directly or via the first network device.
  • information related with configuration for the terminal device configured by the second network device may be transmitted from the second network device via the first network device.
  • Information related with reconfiguration for the terminal device configured by the second network device may be transmitted to the terminal device from the second network device directly or via the first network device.
  • the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’
  • the term ‘based on’ is to be read as ‘at least in part based on. ’
  • the term ‘one embodiment’ and ‘an embodiment’ are to be read as ‘at least one embodiment. ’
  • the term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’
  • the terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.
  • values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • the term “resource, ” “transmission resource, ” “uplink resource, ” , “sidelink resource” or “downlink resource” may refer to any resource for performing a communication, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other resource enabling a communication, and the like.
  • a resource in both frequency domain and time domain will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.
  • channels access procedure and “listen before talk (LBT) ” may be used interchangeably.
  • LBT listen before talk
  • unlicensed spectrum and “shared spectrum” may be used interchangeably.
  • prioritization PSFCH prioritization
  • prioritization procedure PSFCH prioritization procedure
  • prioritization rule PSFCH prioritization rule
  • a transmission priority of a PSFCH may be represented by a priority value. Further, a lower the priority value refers to a higher transmission priority, and vice versa.
  • PSFCH transmission of PSFCH
  • transmission of PSFCH may refer to at least one of the following: PSFCH transmission or PSFCH reception.
  • aset of may mean one or more elements/items, which may be replaced by terms of “at least one” , “agroup of” or “alist of”.
  • “aset of Xs” means “at least one X” or “one or more Xs” .
  • FIG. 1 illustrates a schematic diagram of an example communication environment 100 in which example embodiments of the present disclosure can be implemented.
  • the communication environment 100 which may be a part of a communication network, comprises a network device 130, a terminal device 110 and further terminal devices 120-1 to 120-4.
  • the terminal devices 120-1 to 120-4 are collectively referred to as terminal devices 120.
  • the network device 130 may provide one or more cells, for example, a cell 132 is provided by the network device 130, as illustrated in FIG. 1.
  • the terminal device 110 and the further terminal device 120 may be comprised in a terminal apparatus.
  • a link from the network device 130 to the terminal device 110 (or the terminal device 120) is referred to as a downlink (DL)
  • a link from the terminal device 110 (or the terminal device 120) to the network device 130 is referred to as an uplink (UL) .
  • the network device 130 is a transmitting (TX) device (or a transmitter)
  • the terminal device 110 (or the terminal device 120) is a receiving (RX) device (or a receiver)
  • the terminal device 110 (or the terminal device 120) is a TX device (or a transmitter)
  • the network device 130 is a RX device.
  • SL sidelink
  • one of the devices is a TX device (or a transmitter)
  • the other of the device is an RX device (or a receiver)
  • the terminal device 110 may communicate with more than one further terminal device 120.
  • the communication environment 100 may include any suitable number of terminal devices and network devices configured to implement example embodiments of the present disclosure.
  • the communications in the communication environment 100 may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , New Radio (NR) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , GSM EDGE Radio Access Network (GERAN) , Machine Type Communication (MTC) and the like.
  • GSM Global System for Mobile Communications
  • LTE Long Term Evolution
  • LTE-Evolution LTE-Advanced
  • NR New Radio
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GERAN GSM EDGE Radio Access Network
  • MTC Machine Type Communication
  • Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.
  • the terminal device 110 (or the terminal device 120) is operated in half-duplex mode. That is, the terminal device 110 (or the terminal device 120) does not support performing receiving and transmitting PSFCH (s) at the same time.
  • the terminal device 110 may perform a prioritization procedure based on a prioritization rule to decide whether to perform the first set of PSFCH transmissions only or second set of PSFCH receptions only to avoid half-duplex issue. Additionally, the above procedure firstly only considers PSFCH with HARQ-ACK information. If there is no PSFCH with HARQ-ACK information, the PSFCH with conflict information may be considered.
  • the terminal device 110 may perform a prioritization procedure based on a prioritization rule to determine to drop parts of the PSFCH transmissions to fulfill the limitation.
  • a priority value for the PSFCH is equal to the priority value indicated by an SCI format 1-A associated with the PSFCH. Further, for PSFCH transmission with conflict information, a priority value for the PSFCH is equal to the smallest priority value determined by the corresponding SCI format (s) 1-A for the conflicting resource (s) , and for PSFCH reception with conflict information, a priority value for the PSFCH is equal to the priority value determined by the corresponding SCI format 1-A for the conflicting resource.
  • PSFCH transmission/reception 200A to 200C Examples of PSFCH transmission/reception 200A to 200C are illustrated in FIGS. 2A to 2C.
  • a UE would transmit Nsch, Tx, PSFCHPSFCHs and receive N sch, Rx, PSFCH PSFCHs, and transmissions of the N sch, Tx, PSFCH PSFCHs would overlap in time with receptions of the N sch, Rx, PSFCH PSFCHs.
  • the terminal device 110 may transmit or receive only a set of PSFCHs corresponding to the smallest priority field value, as determined by a first set of SCI format 1-A and/or a second set of SCI format 1-A that are respectively associated with PSFCHs with HARQ-ACK information from the N sch, Tx, PSFCH PSFCHs and PSFCHs with HARQ-ACK information from the N sch, Rx, PSFCH PSFCHs when one or more of the PSFCHs provide HARQ-ACK information.
  • the terminal device 110 may transmit or receive only a set of PSFCHs corresponding to the smallest priority value of the first set of PSFCHs and the second set of PSFCHs that are respectively associated with the N sch, Tx, PSFCH PSFCHs and the N sch, Rx, PSFCH PSFCHs when the PSFCHs provide conflict information.
  • the terminal device 110 may first transmit PSFCHs with HARQ-ACK information from N Tx, PSFCH PSFCHs corresponding to the smallest priority field values from the N Tx, PSFCH priority field values, if any. Subsequently, the terminal device may transmit remaining PSFCHs with conflict information corresponding to the smallest remaining priority field values from the N Tx, PSFCH priority field values, if any.
  • the terminal device 110 may first receive PSFCHs with HARQ-ACK information, if any, and subsequently receive PSFCHs with conflict information, if any.
  • the PSFCH transmission may be performed only in case that the related channel access procedure is successful on at least one of the associated RB sets within the resource pool.
  • LBT listen before talk
  • priority value of PSFCH TX for a resource conflict indication is the smallest priority value of the conflicting transport blocks (TBs)
  • priority value of PSFCH RX for a resource conflict indication is priority value indicated by sidelink control information (SCI) of the terminal device.
  • SCI sidelink control information
  • PSFCH TX/RX or TX/TX prioritization between SL HARQ-ACK feedback (s) and resource conflict indication (s) PSFCH TX/RX for SL HARQ-ACK feedback is always prioritized over PSFCH TX/RX for a resource conflict indication.
  • the terminal device 110 may be indicated by an SCI format scheduling a PSSCH reception to transmit a PSFCH with HARQ-ACK information in response to the PSSCH reception.
  • the terminal device may provide HARQ-ACK information that includes ACK or NACK, or only NACK.
  • the terminal device 110 may be provided, by sl-PSFCH-Period, a number of slots in a resource pool for a period of PSFCH transmission occasion resources. If the number is zero, PSFCH transmissions from the UE in the resource pool are disabled.
  • a UE can be enabled, by sl-InterUE-CoordinationScheme2, to transmit a PSFCH with conflict information in a resource pool.
  • the UE can determine, based on an indication by a SCI format 1-A, a set of resources that includes one or more slots and resource blocks that are reserved for PSSCH transmission. If the UE determines a conflict for a reserved resource for PSSCH transmission, the UE provides conflict information in a PSFCH.
  • the terminal device 110 may expect that a slot (0 ⁇ k ⁇ T′ max ) has a PSFCH transmission occasion resource if k mod where T′ max is a number of slots that belong to the resource pool within 10240 msec, and is provided by sl-PSFCH-Period.
  • the terminal device 110 may be indicated by higher layers to not transmit a PSFCH that includes HARQ-ACK information in response to a PSSCH reception.
  • the terminal device 110 may provide the HARQ-ACK information in a PSFCH transmission in the resource pool.
  • the terminal device 110 may transmit the PSFCH in a first slot that includes PSFCH resources and is at least a number of slots, provided by sl-MinTimeGapPSFCH, of the resource pool after a last slot of the PSSCH reception.
  • the terminal device 110 may attempt to transmit the PSFCH over a number of first slots, provided by sl-candidatePSFCH-Occasions, that include PSFCH resources and are at least a number of slots, provided by sl-MinTimeGapPSFCH, of the resource pool after a last slot of the PSSCH reception.
  • the terminal device 110 may attempt to transmit PSFCH in a slot only when the UE fails to transmit PSFCH associated with the PSSCH in all previous slots for PSFCH within the slots.
  • the terminal device 110 may determine, based on sl-PSFCH-RB-Set, all PRBs of an interlace for one PSFCH transmission with HARQ-ACK information in the resource pool. For the n-th candidate PSFCH transmission occasion, the terminal device 110 may determine a set of interlaces that includes a number of interlaces based on sl-PSFCH-RB-Set. The set of interlaces are indexed in an ascending order of interlace indexes. For each interlace of the set of interlaces, all PRBs in the interlace are available for PSFCH transmission.
  • the terminal device 110 may allocate the interlaces from the interlaces to slot j and sub-channel j, where The allocation starts in an ascending order of i and continues in an ascending order of j.
  • the terminal device 110 may expect that is a multiple of
  • the terminal device 110 may determine a subset of PRBs in a first interlace and, based on sl-PSFCH-RB-Set, a subset of PRBs in a second interlace for a PSFCH transmission with HARQ-ACK information in a resource pool.
  • An index of the first interlace is provided by sl-PSFCH-Type2-CommonInterlace.
  • the PRBs in the second interlace are provided by sl-PSFCH-Type2-DedicatedPRB where, for the n-th candidate PSFCH transmission occasion, and for each interlace l, the terminal device 110 may determine PRBs based on sl-PSFCH-RB-Set. The terminal device 110 may expect that is a multiple of For interlace l, the terminal device 110 may determine a PRB subset with index s to include PRBs The terminal device 110 may determine the PRB subsets by ordering the PRB subsets first in an ascending order of PRB subset index within an interlace and second in ascending order of interlace index.
  • the terminal device 110 may allocate the PRB subsets from the PRB subsets to slot i among the slots for PSSCH transmissions that are associated with the slot and sub-channel j for PSFCH transmissions, where and The allocation starts in an ascending order of i and continues in an ascending order of j.
  • the terminal device 110 may expect that is a multiple of
  • the terminal device 110 may determine a number of PSFCH resources available for multiplexing HARQ-ACK or conflict information in a PSFCH transmission as where is a number of cyclic shift pairs for the resource pool provided by sl-NumMuxCS-Pair and, based on an indication by sl-PSFCH-CandidateResourceType:
  • sl-PSFCH-CandidateResourceType is indicated as startSubCH, and the interlaces or PRB subsets are associated with the lowest sub-channel index within the RB-set with smallest index of the corresponding PSSCH;
  • sl-PSFCH-CandidateResourceType is indicated as allocSubCH, and where the sum is over all RB-sets including resources for the corresponding PSSCH, and the combinations of interlaces and RB-sets or PRB subsets are associated with the sub-channels of the corresponding PSSCH;
  • the corresponding PSSCH is determined based on sl-PSFCH-Occasion.
  • the PSFCH resources are first indexed according to an ascending order of the interlace or PRB subset index, second according to an ascending order of the RB-set index, and then according to an ascending order of the cyclic shift pair index from the cyclic shift pairs.
  • the terminal device 110 may apply cyclic prefix (CP) extension to the first symbol of a PSFCH and within the first one or two symbols before the first symbol of the PSFCH according to an index provided by sl-CP-Extension-PSFCH.
  • CP cyclic prefix
  • the terminal device 110 may determine an index of a PSFCH resource for a PSFCH transmission with HARQ-ACK information in response to a PSSCH reception or with conflict information corresponding to a reserved resource as where P ID is a physical layer source ID provided by SCI format 2-A/2-B/2-C scheduling the PSSCH reception, or by SCI format 2-A/2-B/2-C with corresponding SCI format 1-A reserving the resource from another terminal device to be provided with the conflict information.
  • P ID is a physical layer source ID provided by SCI format 2-A/2-B/2-C scheduling the PSSCH reception, or by SCI format 2-A/2-B/2-C with corresponding SCI format 1-A reserving the resource from another terminal device to be provided with the conflict information.
  • M ID is the identity of the UE receiving the PSSCH as indicated by higher layers if the UE detects a SCI format 2-A with Cast type indicator field value of "01" ; otherwise, M ID is zero.
  • M ID is zero.
  • a PRB s 1 in the first interlace is excluded from the resources for a PSFCH transmission, if
  • ⁇ 5 for ⁇ 0 or
  • the terminal device 110 may determine a m 0 value, for computing a value of cyclic shift ⁇ , from a cyclic shift pair index corresponding to a PSFCH resource index and from using Table 1.
  • the terminal device 110 may determine a m cs value, for computing a value of cyclic shift ⁇ , as in Table 2 (i.e., mapping of HARQ-ACK information bit values to a cyclic shift, from a cyclic shift pair, of a sequence for a PSFCH transmission when HARQ-ACK information includes ACK or NACK) if the terminal device 110 detects a SCI format 2-A with Cast type indicator field value of "01" or "10" or a SCI format 2-C, or as in Table 3 (i.e., mapping of HARQ-ACK information bit values to a cyclic shift, from a cyclic shift pair, of a sequence for a PSFCH transmission when HARQ-ACK information includes only NACK) if the terminal device 110 detects a SCI format 2-B or a SCI format 2-A with Cast type indicator field value of "11" .
  • Table 2 i.e., mapping of HARQ-ACK information bit values to a cyclic shift, from
  • the terminal device 110 may determine a m cs value for computing a value of cyclic shift ⁇ as in Table 4 (i.e., mapping of conflict information bit values to a cyclic shift, from a cyclic shift pair, of a sequence for a PSFCH transmission) .
  • the terminal device 110 may apply one cyclic shift from a cyclic shift pair to a sequence used for the PSFCH transmission.
  • the terminal device 110 may determine a further terminal device 120 for providing the conflict information to in a PSFCH as follows:
  • the terminal device 110 is an intended receiver of the further terminal device 120 for a reserved resource of a PSSCH transmission in a slot
  • ⁇ determines to transmit to the further terminal device 120 the PSFCH with the conflict information.
  • the terminal device 110 may determine a further terminal device 120 for providing the conflict information to in a PSFCH as follows:
  • the terminal device 110 has been indicated a first reserved resource and a second reserved resource as resources for PSSCH reception or, if for a resource pool sl-TypeUE-A is provided, has been indicated at least the first reserved resource or the second reserved resource for PSSCH reception,
  • ⁇ detects a first SCI format 1-A that includes a first priority value, p 1 , and the first reserved resource for PSSCH transmission from a second UE,
  • ⁇ detects a second SCI format 1-A that includes a second priority value, p 2 ⁇ p 1 , and the second reserved resource for PSSCH transmission from another terminal device 120, and
  • ⁇ determines that the first and second resources overlap in time and frequency
  • ⁇ determines the first SCI format 1-A and the second SCI format 1-A are not received later than sl-MinTimeGapPSFCH before the PSFCH occasion for conflict information
  • the terminal device 110 may be provided conditions by sl-OptionForCondition2-A-1 to determine conflict of reserved resources in a resource pool:
  • the terminal device 110 maybe provided by, sl-Thres-RSRP-List Th (p i , p j ), a list of RSRP thresholds for each priority combination (p i , p j ) :
  • the terminal device 110 may determine a resource conflict if the RSRP of another terminal device 120 is above a threshold Th (p 2 , p 1 ) ;
  • the terminal device 110 determines a resource conflict if the RSRP of the second UE is above a threshold Th (p 1 , p 2 ).
  • the terminal device 110 may be provided a value deltaRSRPThresh by sl-DeltaRSRP-Thresh,
  • the terminal device 110 may determine a resource conflict if RSRP 2 >RSRP 1 +deltaRSRPThresh, where RSRP 1 and RSRP 2 are the RSRP measurements from the terminal device 110 for the further terminal device 120 and another terminal device 120, respectively;
  • the terminal device 110 may determine a resource conflict if RSRP 1 >RSRP 2 +deltaRSRPThresh.
  • the terminal device 110 may transmit the PSFCH in the resource pool in a slot determined based on sl-PSFCH-Occasion:
  • the terminal device 110 maytransmit the PSFCH in a first slot that includes PSFCH resources and is at least a number of slots, provided by sl-MinTimeGapPSFCH, of the resource pool after a slot of a PSCCH reception that provides the SCI format 1-A.
  • the PSFCH resource is in a slot that is at least T 3 slots before the resource associated with the conflict information; otherwise, the UE does not transmit the PSFCH with conflict information;
  • the terminal device 110 maytransmit the PSFCH in a latest slot that includes PSFCH resources and is at least T 3 slots of the resource pool before a slot of the resource associated with conflict information.
  • the PSFCH resource is in a slot that is at least sl-MinTimeGapPSFCH slots after a slot of a PSCCH reception that provides the SCI format 1-A; otherwise, the terminal device 110 does not transmit the PSFCH with conflict information.
  • a terminal device In a sidelink communication, a terminal device needs to perform a prioritization procedure and also needs to perform channel access procedure before transmitting the PSFCH. Further, as discussed above, PSFCH with HARQ-ACK information and/or PSFCH with conflict information may be transmitted/received. Due to such complicated communication scenario, the order between performing PSFCH prioritization and performing channel access procedure needs to be further discussed. Further, as PSFCH with HARQ-ACK information usually be considered to have a higher priority, how to improve the transmission probability of PSFCH with HARQ-ACK information also needs to be further discussed.
  • FIG. 3 illustrates a signaling flow 300 of communication in accordance with some embodiments of the present disclosure.
  • the signaling flow 300 will be discussed with reference to FIG. 1, for example, by using the terminal device 110, the further terminal device (s) 120 and the network device 130.
  • examples of message type are only for the purpose of illustration without suggesting any limitations.
  • any suitable message types may be used for the interaction between the terminal device 110, the terminal device (s) 120 and the network device 130.
  • the terminal device 110 may be a sidelink transmission receiver and feedback information transmitter
  • the terminal device (s) 620 may be a sidelink transmission transmitter and feedback information receiver.
  • the terminal device 110 and the further terminal device (s) 120 may perform 320 SL transmission (s) .
  • the terminal device 110 may transmit the SL transmission (s) to the further terminal device (s) 120, and thus the terminal device 110 may receive PSFCH reception (s) from the further terminal device (s) 120.
  • the terminal device 110 may receive the SL transmission (s) from the further terminal device (s) 120, and thus the terminal device 110 may transmit PSFCH transmission (s) to the further terminal device (s) 120.
  • first set of PSFCH transmissions and a second set of PSFCH receptions as example scenario.
  • first set of PSFCH transmissions at least partially overlaps with the second set of PSFCH receptions in time domain.
  • the first set of PSFCH transmissions comprises: the PSFCH transmission #1 and PSFCH transmission #2
  • the second set of PSFCH receptions comprises: PSFCH reception #3 and PSFCH reception #4.
  • the priority values of transmissions of PSFCH #1 to #4 are represented as, priority values #1 to #4, respectively.
  • the sidelink transmissions may be transmitted/received on unlicensed spectrum with shared spectrum channel access resources.
  • the RB sets for PSFCHs with different channel access (LBT) results are different.
  • the terminal device 110 determines 330 to perform a first set of PSFCH transmissions, and if channel access procedures associated with all the PSFCH transmissions that provide HARQ-ACK information in the first set are failed and one or more PSFCH receptions in a second set of PSFCH receptions provide HARQ-ACK information, the terminal device 110 switches 340 to perform at least one PSFCH reception in the second set.
  • the PSFCH transmission #1 provides HARQ-ACK information
  • the PSFCH transmission #2 provides conflict information
  • the PSFCH reception #3 provides HARQ-ACK information
  • the PSFCH reception #4 provides conflict information.
  • the priority value #1 is smaller than the priority value #3, i.e., the PSFCH transmission #1 has a higher priority. Due to this, the terminal device 110 may determine to perform the first set of PSFCH transmissions.
  • the terminal device 110 switches to perform at least one PSFCH reception in the second set. As a result, the terminal device 110 drops the transmission of the PSFCH transmission #2.
  • a more flexible processes may be proceeded.
  • the first set of PSFCH transmissions at least partially overlaps with a second set of PSFCH receptions in time domain and a channel access procedure associated with a first PSFCH transmission in the first set is failed.
  • the terminal device 110 performs at least one PSFCH reception in the second set, wherein a priority value of the first PSFCH transmission is lower than any of a set of priorities of the second set of PSFCH receptions.
  • the terminal device 110 may perform the at least one PSFCH reception in the second set.
  • priority value #1 ⁇ priority value #3 ⁇ priority value #2 ⁇ priority value #4.
  • the terminal device 110 may perform the at least one PSFCH reception in the second set.
  • the terminal device 110 may perform the at least one PSFCH reception in the second set, wherein a PSFCH reception in the second set provides HARQ-ACK information.
  • the terminal device 110 may determine to perform the first set of PSFCH transmissions.
  • the terminal device 110 may perform the at least one PSFCH reception in the second set because the PSFCH receptions #3 and #4 in the second set provide HARQ-ACK information.
  • the terminal device 110 may perform the at least one PSFCH reception in the second set.
  • the terminal device 110 may determine to perform the PSFCH transmissions #1 and #2 first. In case the all the access procedures associated with the PSFCH transmissions #1 and #2 are failed, the terminal device 110 may perform the at least one PSFCH reception in the second set.
  • the terminal device 110 performs at least one PSFCH transmission in the first set, wherein at least one channel access procedure associated with the at least one PSFCH transmission is successful.
  • the terminal device 110 may determine to perform the PSFCH transmissions #1 and #2 first. In this event, if the channel access procedure associated with the PSFCH transmission #1 is failed and the PSFCH transmission #2 is successful, the terminal device 110 may continue to perform the PSFCH transmission #2.
  • whether to switch to perform PSFCH transmission (s) depends on channel access results for the first set.
  • whether to perform PSFCH transmission (s) or PSFCH receptions is determined based on a prioritization rule.
  • the order between performing PSFCH prioritization and performing channel access procedure may be defined.
  • the terminal device 110 may perform a prioritization procedure among the first set and the second set before knowing channel access results for the first set or regardless of the channel access results for the first set.
  • whether to continue performing PSFCH transmission or switch to perform PSFCH reception may be determined by the terminal device 110 based on RRC configuration information via RRC signaling, where the configuration information indicates whether the terminal device 110 is allowed to perform the at least one PSFCH reception in case that the channel access procedure associated with the first PSFCH transmission is failed.
  • the configuration information is pre-defined.
  • the configuration information is pre-defined by the communication organization (such as 3GPP) , or pre-defined by the network operator or service provider.
  • the configuration information is configured as factory settings. In this way, the configuration information may be applied as a default configuration and no additional signaling exchanging is needed.
  • the network device 130 may transmit 310 the configuration information to the terminal device 110. Additionally, the terminal device 11 may report capability-related information about whether the terminal device 110 supports switching to perform PSFCH reception (s) to the network device 130. Such that the configuration information configured by the network device 130 may be more reasonable. In this way, the behavior of the terminal device 110 may be controlled by the network device 130.
  • whether to continue performing PSFCH transmission or switch to perform PSFCH reception (s) may be determined by the terminal device 110 based on capability information of the terminal device 110, such as, processing time length and so on.
  • the terminal device 110 may perform the PSFCH prioritization before the channel access results of the PSFCH transmission is known, or the terminal device 110 may perform the PSFCH prioritization regardless of the channel access results of the PSFCH transmission.
  • a priority value for the PSFCH is equal to the priority value indicated by an SCI format 1-A associated with the PSFCH. Further, for PSFCH transmission with conflict information, a priority value for the PSFCH is equal to the smallest priority value determined by the corresponding SCI format (s) 1-A for the conflicting resource (s) , and for PSFCH reception with conflict information, a priority value for the PSFCH is equal to the priority value determined by the corresponding SCI format 1-A for the conflicting resource.
  • a UE (such as, the terminal device 110) would transmit N sch, Tx, PSFCH PSFCHs and receive N sch, Rx, PSFCH PSFCHs, and transmissions of the N sch, Tx, PSFCH PSFCHs would overlap in time with receptions of the N sch, Rx, PSFCH PSFCHs.
  • the UE transmits or receives only a set of PSFCHs corresponding to the smallest priority field value, as determined by a first set of SCI format 1-A and/or a second set of SCI format 1-A that are respectively associated with PSFCHs with HARQ-ACK information from the N sch, Tx, PSFCH PSFCHs and PSFCHs with HARQ-ACK information from the N sch, Rx, PSFCH PSFCHs when one or more of the PSFCHs provide HARQ-ACK information.
  • the UE transmits or receives only a set of PSFCHs corresponding to the smallest priority value of the first set of PSFCHs and the second set of PSFCHs that are respectively associated with the N sch, Tx, PSFCH PSFCHs and the N sch, Rx, PSFCH PSFCHs when the PSFCHs provide conflict information.
  • the UE If a UE would transmit N sch, Tx, PSFCH PSFCHs in a PSFCH transmission occasion, the UE first transmits PSFCHs with HARQ-ACK information from N Tx, PSFCH PSFCHs corresponding to the smallest priority field values from the N Tx, PSFCH priority field values, if any. Subsequently, the UE transmits remaining PSFCHs with conflict information corresponding to the smallest remaining priority field values from the N Tx, PSFCH priority field values, if any.
  • a UE If a UE indicates a capability to receive NRx, PSFCH PSFCHs in a PSFCH reception occasion, the UE first receives PSFCHs with HARQ-ACK information, if any, and subsequently receives PSFCHs with conflict information, if any.
  • the terminal device 110 may perform the prioritization rule to determine to drop some PSFCH transmissions among a set of intended PSFCH transmissions.
  • the terminal device 110 may re-determine or switch to receive the set of PSFCHs if at least one of the PSFCH provides HARQ-ACK information. In this way, the PSFCH (s) which provides HARQ-ACK information may always be prioritized over PSFCH (s) which provides conflict information.
  • the terminal device 110 may transmit the PSFCH transmission (s) with conflict information.
  • whether to re-determine or switch to receive the set of PSFCH receptions or transmit the PSFCH transmissions with conflict information may be performed may be determined based on a (pre-) configuration signaling from the network device, pre-defined factory settings, or a UE capability (e.g., processing time) .
  • the terminal device 110 may re-determine or switch to receive the set of PSFCHs.
  • a terminal device 110 may first receive PSFCHs with HARQ-ACK information, if any, and subsequently receive PSFCHs with conflict information, if any.
  • the terminal device 110 may perform a prioritization procedure to determine whether to perform PSFCH transmission (s) or PSFCH reception (s) , wherein the PSFCH transmission (s) actually-considered for the prioritization procedure may be re-defined, as discussed below.
  • the terminal device 110 performs a prioritization procedure among the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the first set is successful.
  • the terminal device 110 performs a prioritization procedure among a subset of the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the subset is successful.
  • the terminal device 110 may performs the prioritization procedure after knowing channel access results for the first set.
  • the terminal device 110 may perform the prioritization rule to determine to drop some PSFCH transmissions among a set of intended PSFCH transmissions.
  • the terminal device 110 may perform PSFCH prioritization after channel access (LBT) results for PSFCH transmission is known.
  • LBT channel access
  • the set of PSFCH transmission involved above refers to the PSFCH transmissions which have successful channel access (LBT) results on associated RB sets in the resource pool.
  • LBT channel access
  • a priority value for the PSFCH is equal to the priority value indicated by an SCI format 1-A associated with the PSFCH. Further, for PSFCH transmission with conflict information, a priority value for the PSFCH is equal to the smallest priority value determined by the corresponding SCI format (s) 1-A for the conflicting resource (s) , and for PSFCH reception with conflict information, a priority value for the PSFCH is equal to the priority value determined by the corresponding SCI format 1-A for the conflicting resource.
  • a UE such as, the terminal device 110
  • transmissions of the N sch, Tx, PSFCH PSFCHs would overlap in time with receptions of the N sch, Rx, PSFCH PSFCHs, and all the N sch, Tx, PSFCH PSFCHs have successful channel access procedures (i.e., LBT procedures)
  • the UE transmits or receives only a set of PSFCHs corresponding to the smallest priority field value, as determined by a first set of SCI format 1-A and/or a second set of SCI format 1-A that are respectively associated with PSFCHs with HARQ-ACK information from the N sch, Tx, PSFCH PSFCHs and PSFCHs with HARQ-ACK information from the N sch, Rx, PSFCH PSFCHs when one or more of the PSFCHs provide HARQ-ACK information.
  • the UE transmits or receives only a set of PSFCHs corresponding to the smallest priority value of the first set of PSFCHs and the second set of PSFCHs that are respectively associated with the N sch, Tx, PSFCH PSFCHs and the N sch, Rx, PSFCH PSFCHs when the PSFCHs provide conflict information.
  • the UE If a UE would transmit N sch, Tx, PSFCH PSFCHs in a PSFCH transmission occasion, the UE first transmits PSFCHs with HARQ-ACK information from N Tx, PSFCH PSFCHs corresponding to the smallest priority field values from the N Tx, PSFCH priority field values, if any. Subsequently, the UE transmits remaining PSFCHs with conflict information corresponding to the smallest remaining priority field values from the N Tx, PSFCH priority field values, if any.
  • a UE If a UE indicates a capability to receive N Rx, PSFCH PSFCHs in a PSFCH reception occasion, the UE first receives PSFCHs with HARQ-ACK information, if any, and subsequently receives PSFCHs with conflict information, if any.
  • the terminal device 110 may perform the prioritization rule to determine to drop some PSFCH transmissions among a set of intended PSFCH transmissions.
  • the terminal device 110 may perform PSFCH prioritization after channel access (LBT) results for PSFCH transmission is known.
  • LBT channel access
  • the priority of PSFCH used for comparing should exclude the PSFCH which has channel access (LBT) failure on associated RB sets in the resource pool.
  • LBT channel access
  • a priority value for the PSFCH is equal to the priority value indicated by an SCI format 1-A associated with the PSFCH. Further, for PSFCH transmission with conflict information, a priority value for the PSFCH is equal to the smallest priority value determined by the corresponding SCI format (s) 1-A for the conflicting resource (s) , and for PSFCH reception with conflict information, a priority value for the PSFCH is equal to the priority value determined by the corresponding SCI format 1-A for the conflicting resource.
  • the UE transmits or receives only a set of PSFCHs corresponding to the smallest priority field value, as determined by a first set of SCI format 1-A and/or a second set of SCI format 1-A that are respectively associated with PSFCHs which have successful channel access (LBT) results and with HARQ-ACK information from the N sch, Tx, PSFCH PSFCHs and PSFCHs with HARQ-ACK information from the N sch, Rx, PSFCH PSFCHs when one or more of the PSFCHs provide HARQ-ACK information.
  • LBT successful channel access
  • the UE transmits or receives only a set of PSFCHs corresponding to the smallest priority value of the first set of PSFCHs and the second set of PSFCHs that are respectively associated with the N sch, Tx, PSFCH PSFCHs which have successful channel access (LBT) results and the N sch, Rx, PSFCH PSFCHs when the PSFCHs provide conflict information.
  • LBT successful channel access
  • the UE If a UE would transmit N sch, Tx, PSFCH PSFCHs in a PSFCH transmission occasion, the UE first transmits PSFCHs which have successful channel access (LBT) results and with HARQ-ACK information from N Tx, PSFCH PSFCHs corresponding to the smallest priority field values from the N Tx, PSFCH priority field values, if any. Subsequently, the UE transmits remaining PSFCHs which have successful channel access (LBT) results and with conflict information corresponding to the smallest remaining priority field values from the N Tx, PSFCH priority field values, if any.
  • LBT successful channel access
  • a UE If a UE indicates a capability to receive N Rx, PSFCH PSFCHs in a PSFCH reception occasion, the UE first receives PSFCHs with HARQ-ACK information, if any, and subsequently receives PSFCHs with conflict information, if any.
  • FIG. 4 illustrates a flowchart of a communication method 400 implemented at a terminal device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 400 will be described from the perspective of the terminal device 110 in FIG. 1.
  • the terminal device determines to perform a first set of physical sidelink feedback channel (PSFCH) transmissions.
  • PSFCH physical sidelink feedback channel
  • the terminal device switches to perform at least one PSFCH reception in the second set, wherein the first set of PSFCH transmissions at least partially overlaps with the second set of PSFCH receptions in time domain.
  • HARQ-ACK hybrid automatic repeat request-acknowledgement
  • FIG. 5 illustrates a flowchart of a communication method 500 implemented at a terminal device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 500 will be described from the perspective of the terminal device 110 in FIG. 1.
  • the terminal device determines a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain and a channel access procedure associated with a first PSFCH transmission in the first set is failed.
  • PSFCH physical sidelink feedback channel
  • the terminal device performs at least one of the following: at least one PSFCH transmission in the first set, wherein at least one channel access procedure associated with the at least one PSFCH transmission is successful; or at least one PSFCH reception in the second set, wherein a priority value of the first PSFCH transmission is lower than any of a set of priorities of the second set of PSFCH receptions.
  • the terminal device may perform the at least one PSFCH reception in the second set.
  • the terminal device may perform the at least one PSFCH reception in the second set, wherein a PSFCH reception in the second set provides HARQ-ACK information.
  • the terminal device in accordance with a determination that all the channel access procedures associated with the first set are failed or none of the channel access procedures associated with the first set are successful, the terminal device may perform the at least one PSFCH reception in the second set.
  • the terminal device may determine whether to perform the at least one PSFCH transmission or the least one PSFCH reception based on at least one of the following: configuration information indicating whether the terminal device is allowed to perform the at least one PSFCH reception in case that the channel access procedure associated with the first PSFCH transmission is failed, or capability information of the terminal device.
  • the terminal device may perform a prioritization procedure among the first set and the second set before knowing channel access results for the first set or regardless of the channel access results for the first set.
  • FIG. 6 illustrates a flowchart of a communication method 600 implemented at a terminal device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 600 will be described from the perspective of the terminal device 100 in FIG. 1.
  • the terminal device determines that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain.
  • PSFCH physical sidelink feedback channel
  • the terminal device performs a prioritization procedure among one of the following: the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the first set is successful, or At block 630, a subset of the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the subset is successful.
  • the processor is further configured to cause the terminal device to: perform the prioritization procedure after knowing channel access results for the first set.
  • FIG. 7 illustrates a flowchart of a communication method 700 implemented at a network device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 700 will be described from the perspective of the network device 130 in FIG. 1.
  • the network device transmits, to a terminal device, configuration information indicating whether the terminal device is allowed to perform at least one PSFCH reception in a second set of PSFCH receptions in case that a channel access procedure associated with a fist PSFCH transmission in the first set of PSFCH transmissions is failed, wherein the first set of PSFCH transmissions is at least partially overlaps with the second set of PSFCH receptions in time domain.
  • FIG. 8 is a simplified block diagram of a device 800 that is suitable for implementing embodiments of the present disclosure.
  • the device 800 can be considered as a further example implementation of any of the devices as shown in FIG. 1. Accordingly, the device 800 can be implemented at or as at least a part of the terminal device 110 or the network device 130.
  • the device 800 includes a processor 810, a memory 820 coupled to the processor 810, a suitable transceiver 840 coupled to the processor 810, and a communication interface coupled to the transceiver 840.
  • the memory 820 stores at least a part of a program 830.
  • the transceiver 840 may be for bidirectional communications or a unidirectional communication based on requirements.
  • the transceiver 840 may include at least one of a transmitter 842 and a receiver 844.
  • the transmitter 842 and the receiver 844 may be functional modules or physical entities.
  • the transceiver 840 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2/Xn interface for bidirectional communications between eNBs/gNBs, S1/NG interface for communication between a Mobility Management Entity (MME) /Access and Mobility Management Function (AMF) /SGW/UPF and the eNB/gNB, Un interface for communication between the eNB/gNB and a relay node (RN) , or Uu interface for communication between the eNB/gNB and a terminal device.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • RN relay node
  • Uu interface for communication between the eNB/gNB and a terminal device.
  • the program 830 is assumed to include program instructions that, when executed by the associated processor 810, enable the device 800 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to FIGS. 1 to 7.
  • the embodiments herein may be implemented by computer software executable by the processor 810 of the device 800, or by hardware, or by a combination of software and hardware.
  • the processor 810 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 810 and memory 820 may form processing means 850 adapted to implement various embodiments of the present disclosure.
  • the memory 820 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 820 is shown in the device 800, there may be several physically distinct memory modules in the device 800.
  • the processor 810 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 800 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • a terminal device comprising a circuitry.
  • the circuitry is configured to: determine to perform a first set of physical sidelink feedback channel (PSFCH) transmissions, and in accordance with a determination that channel access procedures associated with all the PSFCH transmissions that provide hybrid automatic repeat request-acknowledgement (HARQ-ACK) information in the first set are failed and one or more PSFCH receptions in a second set of PSFCH receptions provide HARQ-ACK information, switch to perform at least one PSFCH reception in the second set, wherein the first set of PSFCH transmissions at least partially overlaps with the second set of PSFCH receptions in time domain.
  • the circuitry may be configured to perform any method implemented by the terminal device as discussed above.
  • a terminal device comprising a circuitry.
  • the circuitry is configured to: in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain and a channel access procedure associated with a first PSFCH transmission in the first set is failed, perform at least one of the following: at least one PSFCH transmission in the first set, wherein at least one channel access procedure associated with the at least one PSFCH transmission is successful; or at least one PSFCH reception in the second set, wherein a priority value of the first PSFCH transmission is lower than any of a set of priorities of the second set of PSFCH receptions.
  • the circuitry may be configured to perform any method implemented by the terminal device as discussed above.
  • a terminal device comprising a circuitry.
  • the circuitry is configured to: in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain, perform a prioritization procedure among one of the following: the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the first set is successful, or a subset of the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the subset is successful.
  • the circuitry may be configured to perform any method implemented by the terminal device as discussed above.
  • a network device comprising a circuitry.
  • the circuitry is configured to: transmit, to a terminal device, configuration information indicating whether the terminal device is allowed to perform at least one PSFCH reception in a second set of PSFCH receptions in case that a channel access procedure associated with a fist PSFCH transmission in the first set of PSFCH transmissions is failed, wherein the first set of PSFCH transmissions is at least partially overlaps with the second set of PSFCH receptions in time domain.
  • the circuitry may be configured to perform any method implemented by the network device as discussed above.
  • circuitry used herein may refer to hardware circuits and/or combinations of hardware circuits and software.
  • the circuitry may be a combination of analog and/or digital hardware circuits with software/firmware.
  • the circuitry may be any portions of hardware processors with software including digital signal processor (s) , software, and memory (ies) that work together to cause an apparatus, such as a terminal device or a network device, to perform various functions.
  • the circuitry may be hardware circuits and or processors, such as a microprocessor or a portion of a microprocessor, that requires software/firmware for operation, but the software may not be present when it is not needed for operation.
  • the term circuitry also covers an implementation of merely a hardware circuit or processor (s) or a portion of a hardware circuit or processor (s) and its (or their) accompanying software and/or firmware.
  • a terminal apparatus comprises means for determining to perform a first set of physical sidelink feedback channel (PSFCH) transmissions, and means for in accordance with a determination that channel access procedures associated with all the PSFCH transmissions that provide hybrid automatic repeat request-acknowledgement (HARQ-ACK) information in the first set are failed and one or more PSFCH receptions in a second set of PSFCH receptions provide HARQ-ACK information, switching to perform at least one PSFCH reception in the second set, means for wherein the first set of PSFCH transmissions at least partially overlaps with the second set of PSFCH receptions in time domain.
  • the first apparatus may comprise means for performing the respective operations of the method 400.
  • the first apparatus may further comprise means for performing other operations in some example embodiments of the method 400.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • a terminal apparatus comprises means for in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain and a channel access procedure associated with a first PSFCH transmission in the first set is failed, performing at least one of the following: means for at least one PSFCH transmission in the first set, wherein at least one channel access procedure associated with the at least one PSFCH transmission is successful; or means for at least one PSFCH reception in the second set, means for wherein a priority value of the first PSFCH transmission is lower than any of a set of priorities of the second set of PSFCH receptions.
  • PSFCH physical sidelink feedback channel
  • the second apparatus may comprise means for performing the respective operations of the method 500. In some example embodiments, the second apparatus may further comprise means for performing other operations in some example embodiments of the method 500.
  • the means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
  • a terminal apparatus comprises means for in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain, performing a prioritization procedure among one of the following: means for the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the first set is successful, or means for a subset of the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the subset is successful.
  • the third apparatus may comprise means for performing the respective operations of the method 600.
  • the third apparatus may further comprise means for performing other operations in some example embodiments of the method 600.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • a network apparatus comprises means for transmitting, to a terminal device, configuration information indicating whether the terminal device is allowed to perform at least one PSFCH reception in a second set of PSFCH receptions in case that a channel access procedure associated with a fist PSFCH transmission in the first set of PSFCH transmissions is failed, means for wherein the first set of PSFCH transmissions is at least partially overlaps with the second set of PSFCH receptions in time domain.
  • the fourth apparatus may comprise means for performing the respective operations of the method 700.
  • the fourth apparatus may further comprise means for performing other operations in some example embodiments of the method 700.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • embodiments of the present disclosure provide the following aspects.
  • a terminal device comprising: a processor configured to cause the terminal device to: determine to perform a first set of physical sidelink feedback channel (PSFCH) transmissions, and in accordance with a determination that channel access procedures associated with all the PSFCH transmissions that provide hybrid automatic repeat request-acknowledgement (HARQ-ACK) information in the first set are failed and one or more PSFCH receptions in a second set of PSFCH receptions provide HARQ-ACK information, switch to perform at least one PSFCH reception in the second set, wherein the first set of PSFCH transmissions at least partially overlaps with the second set of PSFCH receptions in time domain.
  • PSFCH physical sidelink feedback channel
  • HARQ-ACK hybrid automatic repeat request-acknowledgement
  • a terminal device comprising: a processor configured to cause the terminal device to: in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain and a channel access procedure associated with a first PSFCH transmission in the first set is failed, perform at least one of the following: at least one PSFCH transmission in the first set, wherein at least one channel access procedure associated with the at least one PSFCH transmission is successful; or at least one PSFCH reception in the second set, wherein a priority value of the first PSFCH transmission is lower than any of a set of priorities of the second set of PSFCH receptions.
  • PSFCH physical sidelink feedback channel
  • the processor is further configured to cause the terminal device to: in accordance with a determination that the smallest priority value of a set of priorities of the at least one PSFCH reception in the second set is lower than the smallest priority value of at least one priority of the at least one PSFCH transmission, perform the at least one PSFCH reception in the second set.
  • the processor is further configured to cause the terminal device to: in accordance with a determination that all of the at least one PSFCH transmission provides conflict information or none of the at least one PSFCH transmission provides HARQ-ACK information, perform the at least one PSFCH reception in the second set, wherein a PSFCH reception in the second set provides HARQ-ACK information.
  • the processor is further configured to cause the terminal device to: in accordance with a determination that all the channel access procedures associated with the first set are failed or none of the channel access procedures associated with the first set are successful, perform the at least one PSFCH reception in the second set.
  • the processor is further configured to cause the terminal device to: determine whether to perform the at least one PSFCH transmission or the least one PSFCH reception based on at least one of the following: configuration information indicating whether the terminal device is allowed to perform the at least one PSFCH reception in case that the channel access procedure associated with the first PSFCH transmission is failed, or capability information of the terminal device.
  • the processor is further configured to cause the terminal device to: perform a prioritization procedure among the first set and the second set before knowing channel access results for the first set or regardless of the channel access results for the first set.
  • a terminal device comprising: a processor configured to cause the terminal device to: in accordance with a determination that a first set of physical sidelink feedback channel (PSFCH) transmissions at least partially overlaps with a second set of PSFCH receptions in time domain, perform a prioritization procedure among one of the following: the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the first set is successful, or a subset of the first set and the second set, wherein a channel access procedure associated with each sidelink PSFCH transmissions in the subset is successful.
  • PSFCH physical sidelink feedback channel
  • the processor is further configured to cause the terminal device to: perform the prioritization procedure after knowing channel access results for the first set.
  • a network device comprising: a processor configured to cause the network device to: transmit, to a terminal device, configuration information indicating whether the terminal device is allowed to perform at least one PSFCH reception in a second set of PSFCH receptions in case that a channel access procedure associated with a fist PSFCH transmission in the first set of PSFCH transmissions is failed, wherein the first set of PSFCH transmissions is at least partially overlaps with the second set of PSFCH receptions in time domain.
  • a terminal device comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the terminal device discussed above.
  • a terminal device comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the terminal device discussed above.
  • a network device comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the network device discussed above.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device discussed above.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device discussed above.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the network device discussed above.
  • a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device discussed above.
  • a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device discussed above.
  • a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the network device discussed above.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to FIGS. 1 to 8.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the machine readable medium may be a machine readable signal medium or a machine readable storage medium.
  • a machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • machine readable storage medium More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM portable compact disc read-only memory
  • magnetic storage device or any suitable combination of the foregoing.

Landscapes

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

Abstract

Les modes de réalisation de la présente divulgation concernent une solution pour des transmissions de canal de rétroaction de liaison latérale physique (PSFCH). Dans une solution, un dispositif terminal détermine d'effectuer un premier ensemble de transmissions de canal de rétroaction de liaison latérale physique (PSFCH), et conformément à une détermination selon laquelle les procédures d'accès au canal associées à toutes les transmissions PSFCH qui fournissent des informations d'accusé de réception de demande de répétition automatique hybride (HARQ-ACK) dans le premier ensemble ont échoué et une ou plusieurs réceptions PSFCH d'un second ensemble de réceptions PSFCH fournissent des informations HARQ-ACK, commute pour effectuer au moins une réception PSFCH dans le second ensemble, le premier ensemble de transmissions PSFCH chevauchant au moins partiellement le second ensemble de réceptions PSFCH dans le domaine temporel.
PCT/CN2023/129160 2023-11-01 2023-11-01 Dispositifs et procédés de communication Pending WO2025091344A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/129160 WO2025091344A1 (fr) 2023-11-01 2023-11-01 Dispositifs et procédés de communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/129160 WO2025091344A1 (fr) 2023-11-01 2023-11-01 Dispositifs et procédés de communication

Publications (1)

Publication Number Publication Date
WO2025091344A1 true WO2025091344A1 (fr) 2025-05-08

Family

ID=95582905

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/129160 Pending WO2025091344A1 (fr) 2023-11-01 2023-11-01 Dispositifs et procédés de communication

Country Status (1)

Country Link
WO (1) WO2025091344A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220240265A1 (en) * 2021-01-22 2022-07-28 Qualcomm Incorporated Prioritization of inter-ue coordination information
US20230057836A1 (en) * 2019-10-07 2023-02-23 Samsung Electronics Co., Ltd. Apparatus and method for transmitting or receiving signal in wireless communication system
US20230344563A1 (en) * 2022-03-11 2023-10-26 Austek Computer Inc. Method and Apparatus for Transmitting Sidelink Feedback in a Wireless Communication System
WO2023212358A1 (fr) * 2022-04-28 2023-11-02 Ofinno, Llc Commutation entre une transmission et une réception de liaison latérale

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230057836A1 (en) * 2019-10-07 2023-02-23 Samsung Electronics Co., Ltd. Apparatus and method for transmitting or receiving signal in wireless communication system
US20220240265A1 (en) * 2021-01-22 2022-07-28 Qualcomm Incorporated Prioritization of inter-ue coordination information
US20230344563A1 (en) * 2022-03-11 2023-10-26 Austek Computer Inc. Method and Apparatus for Transmitting Sidelink Feedback in a Wireless Communication System
WO2023212358A1 (fr) * 2022-04-28 2023-11-02 Ofinno, Llc Commutation entre une transmission et une réception de liaison latérale

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHARP: "Remaining issues on physical layer procedures for NR sidelink", 3GPP DRAFT; R1-2006561, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20200817 - 20200828, 8 August 2020 (2020-08-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051918115 *

Similar Documents

Publication Publication Date Title
US20250175810A1 (en) Methods, devices, and computer readable medium for communication
US20240422752A1 (en) Methods, devices, and medium for communication
WO2024119435A1 (fr) Procédé, dispositif et support de stockage informatique de communication
WO2024007314A1 (fr) Procédés, dispositifs et support destinés aux communications
WO2023150981A1 (fr) Procédés, dispositifs, et support lisible par ordinateur pour des communications
WO2023184273A1 (fr) Procédé, dispositif, et support de stockage informatique destinés à la communication
WO2025091344A1 (fr) Dispositifs et procédés de communication
WO2024000584A1 (fr) Procédé, dispositif et support lisible par ordinateur pour communication sur liaison latérale
WO2024065771A1 (fr) Procédés, dispositifs et support de communication
WO2024197725A1 (fr) Dispositif et procédé de communication
WO2023137638A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications
WO2025065189A1 (fr) Dispositif, procédé et support lisible par ordinateur pour des communications
WO2024092843A1 (fr) Procédés, dispositifs et support de communication
WO2025217821A1 (fr) Dispositifs et procédés de transmission en sub-band full duplex
WO2024092571A1 (fr) Procédés, dispositifs et support de communication
WO2025020196A1 (fr) Dispositifs et procédés de communication
WO2025010742A1 (fr) Dispositifs et procédés de communication
WO2025030289A1 (fr) Dispositifs et procédés de communication
WO2023236178A1 (fr) Procédé, dispositif et support lisible par ordinateur pour des communications de liaison latérale
WO2024207341A1 (fr) Dispositif et procédé de communication
WO2024168736A1 (fr) Dispositifs et procédés de communication
WO2023133829A1 (fr) Procédé, dispositif et support de stockage informatique de communication
WO2025091402A1 (fr) Dispositifs et procédés de communication
WO2024040449A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications de liaison latérale
WO2025000530A1 (fr) Regroupement de porteuses dans une communication en liaison latérale

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23957217

Country of ref document: EP

Kind code of ref document: A1