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WO2023137638A1 - Procédé, dispositif et support lisible par ordinateur destinés aux communications - Google Patents

Procédé, dispositif et support lisible par ordinateur destinés aux communications Download PDF

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Publication number
WO2023137638A1
WO2023137638A1 PCT/CN2022/072824 CN2022072824W WO2023137638A1 WO 2023137638 A1 WO2023137638 A1 WO 2023137638A1 CN 2022072824 W CN2022072824 W CN 2022072824W WO 2023137638 A1 WO2023137638 A1 WO 2023137638A1
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WIPO (PCT)
Prior art keywords
sidelink
configuration
list
resource
transmission
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PCT/CN2022/072824
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English (en)
Inventor
Gang Wang
Zhaobang MIAO
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NEC Corp
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NEC Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • 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
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/115—Grant-free or autonomous transmission

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to a method, device and computer readable media for sidelink communication.
  • SL-U Sidelink on unlicensed spectrum or band
  • 3GPP 3rd Generation Partnership Project
  • the scheme of SL-U should base on New Radio (NR) sidelink and NR-U.
  • Sidelink resource allocation mode 1 should be supported.
  • Sidelink resource allocation mode 1 on licensed spectrum should be used as baseline of the mode 1 scheme of SL-U.
  • example embodiments of the present disclosure provide methods, devices and computer readable media for communications.
  • a method for communications comprises: receiving, at a first terminal device, at least one of configuration information and scheduling information based on a first identification; determining a sidelink resource based on at least one of the scheduling information and the configuration information; and performing a sidelink transmission on the sidelink resource.
  • a method for communications comprises: determining, at a network device, at least one of scheduling information and configuration information for sidelink transmission; and transmitting at least one of the configuration information and the scheduling information based on a first identification.
  • a terminal device comprising a processor and a memory storing instructions.
  • the memory and the instructions are configured, with the processor, to cause the terminal device to perform the method according to the first aspect.
  • a network device comprising a processor and a memory storing instructions.
  • the memory and the instructions are configured, with the processor, to cause the network device to perform the method according to the second aspect.
  • a computer readable medium having instructions stored thereon.
  • the instructions when executed on at least one processor of a device, cause the device to perform the method according to the first aspect.
  • a computer readable medium having instructions stored thereon. The instructions, when executed on at least one processor of a device, cause the device to perform the method according to the second aspect.
  • Fig. 1 illustrates an example communication network in which implementations of the present disclosure can be implemented
  • Fig. 2 illustrates an example of automatic gain control (AGC) symbol and guard period (GP) symbol in accordance with some embodiments of the present disclosure
  • Fig. 3 illustrates an example of a sub-channel in accordance with some embodiments of the present disclosure
  • Fig. 4 illustrates an example of an interlace in accordance with some embodiments of the present disclosure
  • Fig. 5 illustrates an example of sidelink CO sharing in accordance with some embodiments of the present disclosure
  • Fig. 6 illustrates an example signaling chart showing an example process for communications in accordance with some embodiments of the present disclosure
  • Fig. 7 illustrates an example of Control Resource Sets (CORESETs) and search space sets in accordance with some embodiments of the present disclosure
  • Fig. 8 illustrates an example a timing line between transmission and forwarding of Hybrid Automatic Repeat Request (HARQ) feedback information in accordance with some embodiments of the present disclosure
  • Fig. 9 illustrates a flowchart of an example method in accordance with some embodiments of the present disclosure.
  • Fig. 10 illustrates a flowchart of an example method in accordance with some embodiments of the present disclosure.
  • Fig. 11 is a simplified block diagram of a device that is suitable for implementing 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, device 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 has ‘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 incorporated 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 (410 MHz –7125 MHz) , FR2 (24.25GHz to 71GHz) , frequency band larger than 100GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • 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.
  • test equipment e.g. signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator
  • 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 ‘some embodiments’ and ‘an embodiment’ are to be read as ‘at least some embodiments. ’
  • 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.
  • Fig. 1 illustrates a schematic diagram of an example communication network 100 in which embodiments of the present disclosure can be implemented.
  • the communication network 100 may include a terminal device 110, a terminal device 120, a terminal device 130, network devices 140 and 150.
  • the network devices 140 and 150 may communicate with the terminal device 110, the terminal device 120 and the terminal device 130 via respective wireless communication channels.
  • the network device 140 may be a gNB in NR, and the network device 150 may be an eNB in Long Term Evolution (LTE) system.
  • LTE Long Term Evolution
  • the communication network 100 may include any suitable number of network devices and/or terminal devices adapted for implementing implementations of the present disclosure.
  • the communications in the communication network 100 may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , LTE, LTE-Evolution, LTE-Advanced (LTE-A) , 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 LTE
  • LTE-Evolution LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GERAN GSM EDGE Radio Access Network
  • MTC Machine Type Communication
  • the communications may be performed according to any generation communication protocols either currently known or to be developed in the future. 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)
  • the communications in the communication network 100 may comprise sidelink communication.
  • Sidelink communication is a wireless radio communication directly between two or more terminal devices, such as two or more terminal devices among the terminal device 110, the terminal device 120 and the terminal device 130.
  • the two or more terminal devices that are geographically proximate to each other can directly communicate without going through the network device 140 or 150 or through a core network.
  • Data transmission in sidelink communication is thus different from typical cellular network communications, in which a terminal device transmits data to the network device 140 or 150 (i.e., uplink transmissions) or receives data from the network device 140 or 150 (i.e., downlink transmissions) .
  • data is transmitted directly from a source terminal device (such as the terminal device 110) to a target terminal device (such as the terminal device 120) through the Unified Air Interface, e.g., PC5 interface, (i.e., sidelink transmissions) , as shown in Fig. 1.
  • Unified Air Interface e.g., PC5 interface
  • Sidelink communication can provide several advantages, including reducing data transmission load on a core network, system resource consumption, transmission power consumption, and network operation costs, saving wireless spectrum resources, and increasing spectrum efficiency of a cellular wireless communication system.
  • a sidelink communication manner includes but is not limited to device to device (D2D) communication, Vehicle-to-Everything (V2X) communication, etc.
  • D2D device to device
  • V2X Vehicle-to-Everything
  • V2X communication enables vehicles to communicate with other vehicles (i.e. Vehicle-to-Vehicle (V2V) communication) , with infrastructure (i.e. Vehicle-to-Infrastructure (V2I) , with wireless networks (i.e. Vehicle-to-Network (V2N) communication) , with pedestrians (i.e. Vehicle-to-Pedestrian (V2P) communication) , and even with the owner's home (i.e. Vehicle-to-Home (V2H) ) .
  • infrastructure include roadside units such as traffic lights, toll gates and the like.
  • V2X communication can be used in a wide range of scenarios, including in accident prevention and safety, convenience, traffic efficiency and clean driving, and ultimately in relation to autonomous or self-driving vehicles.
  • a terminal device uses resources in sidelink resource pools to transmit or receive signals.
  • the sidelink resource pools include resources in time domain and frequency domain, which are dedicated resources of the sidelink communication, or shared by the sidelink communication and a cellular link.
  • a sidelink resource pool which may contain multiple slots and resource blocks (RBs) , and all or part of the symbols in a slot can be used for sidelink transmission.
  • the first symbol i.e., the start symbol
  • the last symbol used as a guard period (GP) symbol.
  • AGC symbols and GP symbols can be considered as fixed overheads in sidelink resource.
  • AGC symbols and GP symbols are included in the sidelink symbols which are indicated by the sidelink channel resource configuration, and AGC symbols carry redundancy sidelink information while GP symbols are not used for carrying sidelink information, as shown in Fig. 2.
  • the terminal device 110, the terminal device 120 and the terminal device 130 may use sidelink channels to transmit sidelink signaling or information.
  • the sidelink channels include at least one of the following: a Physical Sidelink Control Channel (PSCCH) resource which is used for carrying sidelink control information (SCI) , a Physical Sidelink Shared Channel (PSSCH) resource which is used for carrying sidelink data service information, a physical sidelink feedback channel (PSFCH) resource which is used for carrying sidelink ACK/NACK feedback information, a physical sidelink broadcast channel (PSBCH) resource which is used for carrying sidelink broadcast information, and a physical sidelink discovery channel (PSDCH) resource which is used for carrying a sidelink discovery signal.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSFCH physical sidelink feedback channel
  • PSBCH physical sidelink broadcast channel
  • PSDCH physical sidelink discovery channel
  • a PSSCH resource includes all the symbols in a slot that are configured as sidelink available symbols, and one or more sub-channels in frequency domain, where each sub-channel contains an integer number of consecutive RBs.
  • the number m of RBs included in one sub-channel is also called the sub-channel size.
  • Each slot contained in the resource pool contains multiple available sidelink symbols, and the PSSCH resource is located in the time domain from the first available sidelink symbol in this slot to all available symbols.
  • the resource pool contains multiple RBs, according to the sub-channel size m, starting from the first RB in the resource pool, each m RBs are divided into one sub-channel, and each PSSCH channel resource is located on one or more sub-channels.
  • a PSCCH resource includes t symbols in time domain, and k RBs in frequency domain. Each PSCCH channel resource is located at consecutive t symbols starting from the first symbol in the available symbols in the time domain, and located at the position of consecutive k RBs starting from the first RB in the corresponding sub-channel in the frequency domain, as shown in Fig. 3.
  • interlace based RB allocation is used in unlicensed band in NR.
  • An example of the structure of interlace is shown in Fig. 4. In Fig. 4, several non-consecutive PRBs are assigned as the resource of each interlace.
  • one of terminal devices 110, 120 and 130 may access to a channel in unlicensed spectrum by using a channel access procedure, and obtain a Channel Occupancy (CO) .
  • a Channel Occupancy Time (COT) refers to total time for a CO which may be shared among the terminal devices 110, 120 and 130. For example, as shown in Fig. 5.
  • the terminal device 110 initiates a CO and shares the CO with the terminal device 120.
  • sidelink resource allocation mode 1 on licensed spectrum should be used as baseline for the scheme of SL-U.
  • a network device schedules sidelink terminal device to perform sidelink transmission on licensed spectrum and performs PSCCH and/or PSSCH resource allocation.
  • Sidelink resource allocation mode 1 supports dynamic scheduling and configured grant (CG) .
  • CG is also referred to as Semi-Persistent Scheduling (SPS) .
  • SPS Semi-Persistent Scheduling
  • Type 1 CG is based on Radio Resource Control (RRC) configuration
  • Type 2 CG is activated by a DCI format 3_0 based on RRC configuration.
  • RRC Radio Resource Control
  • a terminal device transmits SCI and/or data on the scheduled PSCCH and/or PSSCH resources.
  • There is an RRC connection i.e., Uu connection
  • Dedicated Radio Network Temporary Identity RNTI which is different from Uu RNTI is used for sidelink scheduling DCI.
  • the terminal device may forward sidelink Hybrid Automatic Repeat Request (HARQ) feedback information to the network device on PUCCH or PUSCH according to configuration.
  • HARQ Hybrid Automatic Repeat Request
  • a terminal device For mode 1 scheduling of sidelink transmission on unlicensed spectrum, a terminal device should be able to identify that scheduling information from a network device is for Uu communication, for sidelink transmission on licensed spectrum or for sidelink transmission on unlicensed spectrum.
  • Fig. 6 illustrates an example signaling chart showing an example process 600 for scheduling identification in accordance with some embodiments of the present disclosure.
  • the process 600 may involve the terminal device 110 and the network device 140 as shown in Fig. 1. It is to be understood that the process 600 may include additional acts not shown and/or may omit some acts as shown, and the scope of the present disclosure is not limited in this regard.
  • the network device 140 determines (620) scheduling information for sidelink transmission. In turn, the network device 140 transmits (630) the scheduling information based on a first identification.
  • the terminal device 110 receives the scheduling information based on the first identification.
  • the terminal device 110 determines (640) a sidelink resource based on the scheduling information.
  • the terminal device 110 performs the sidelink transmission on the sidelink resource.
  • the network device 140 will not receive the sidelink transmission. Instead, one or more sidelink terminal devices (such as the terminal device 120) will receive the sidelink transmission.
  • the terminal device 110 may perform the sidelink transmission on the sidelink resource on unlicensed spectrum.
  • the sidelink transmission on unlicensed spectrum is also referred to as SL-U
  • the sidelink resource for SL-U is also referred to as an SL-U resource.
  • the terminal device 110 may transmit (650) SCI on PSCCH on the SL-U resource.
  • the terminal device 110 may transmit (655) data on PSSCH on the SL-U resource to the terminal device 120.
  • the network device may determine configuration information and transmit (610) the configuration information to the terminal device 110. Accordingly, the terminal device 110 may receive the configuration information from the network device 140. In some embodiments, the terminal device 110 may receive a high layer signaling with RRC connection between the network device 140 and the terminal device 110 on Uu on licensed spectrum. In such embodiments, the terminal device 110 may receive the configuration information through the high layer signaling. The terminal device 110 may determine the sidelink resource based on the scheduling information and the configuration information.
  • the first identification may comprise at least one of the following: a Control Resource Set (CORESET) for receiving the scheduling information, or a search space set for receiving the scheduling information.
  • CORESET Control Resource Set
  • the configuration information received from the network device 140 may comprise configuration for at least one the CORESET or the search space set. This will be described with reference to Fig. 7.
  • Fig. 7 illustrates an example of Control Resource Sets (CORESETs) and search space sets in accordance with some embodiments of the present disclosure.
  • CORESETs Control Resource Sets
  • a CORESET 710 and a search space set 712 are configured for receiving scheduling information for Uu communication and sidelink transmission on licensed spectrum.
  • a CORESET 720 and a search space set 722 are configured for receiving scheduling information for SL-U.
  • the terminal device 110 may receive, from the network device 140, configuration for the CORESETs 710, 720 and the search space sets 712, 722 via a high layer signaling. The terminal device 110 may try to receive, based on the configuration, the scheduling information for SL-U in the CORESET 720 and the search space set 722.
  • the scheduling information for SL-U may be used for dynamic scheduling of SL-U or type 2 CG scheduling of SL-U.
  • dedicated SL-U RNTIs may be used.
  • the first identification may comprise a first RNTI for dynamic scheduling of the sidelink transmission on unlicensed spectrum, or a second RNTI for CG scheduling of the sidelink transmission on unlicensed spectrum.
  • the terminal device 110 may try to receive scheduling information for SL-U with dedicated SL-U RNTIs.
  • the configuration information received from the network device 140 may comprise configuration for the first RNTI and the second RNTI.
  • the first RNTI may be represented by SL-U-RNTI and the second RNTI may be represented by SL-U-CS-RNTI for the purpose of discussion.
  • the terminal device 110 may receive the configuration information from the network device 140 via SL-U ScheduledConfig information element as below:
  • the first identification may comprise a third RNTI for dynamic scheduling of sidelink transmission and a fourth RNTI for CG scheduling of the sidelink transmission.
  • the third RNTI is common for dynamic scheduling of sidelink transmission on licensed spectrum or dynamic scheduling of SL-U.
  • the fourth RNTI is common for CG scheduling of the sidelink transmission on licensed spectrum and CG scheduling of SL-U.
  • the third RNTI may be represented by SL-RNTI and the fourth RNTI may be represented by SL-CS-RNTI.
  • the terminal device 110 may identify the scheduling information for SL-U according to other embodiments of the present disclosure.
  • the configuration information received from the network device 140 may comprise resource allocation for the sidelink transmission on unlicensed spectrum.
  • the resource allocation (which may represented by SL-U resource allocation) may comprise at least one of the following:
  • BWPs Bandwidth Parts
  • RB Resource Block
  • the configuration information received from the network device 140 may comprise CG configuration for the sidelink transmission on unlicensed spectrum.
  • the CG configuration (which may represented by SL-U-ConfiguredGrantConfig) may comprise at least one of the following:
  • ⁇ a period of the sidelink transmission of the CG configuration (which may represented by SL-U-PeriodCG) ,
  • HARQ Hybrid Automatic Repeat Request
  • ⁇ an offset used in deriving identities for the HARQ process of the sidelink transmission of the CG configuration (which may represented by SL-U-HARQ-ProcID-offset) ,
  • the configuration information received from the network device 140 may comprise a list of combinations of at least one of the following: a channel access type, a Cyclic Prefix (CP) extension index, or Channel Access Priority Class (CAPC) .
  • CP Cyclic Prefix
  • CAC Channel Access Priority Class
  • the terminal device 110 may receive the scheduling information based on the first identification by receiving the scheduling information on Physical Downlink Control Channel (PDCCH) . In some embodiments, the terminal device 110 may receive the scheduling information by receiving DCI on PDCCH.
  • PDCCH Physical Downlink Control Channel
  • the DCI may be used for dynamic scheduling of SL-U or activation of type 2 CG scheduling of SL-U.
  • a new DCI format may be defined for SL-U scheduling, which may indicate at least one of the following indication fields:
  • ⁇ a format identifier for the scheduling information (also referred to as DCI format identifier)
  • bitwidth for this indication field may be 1 or 2 bits, for example, value 1 or 11 of this indication field may be used for mode 1 SL-U scheduling
  • ⁇ a carrier index in the list of carriers, which indicates the carrier index of the scheduled SL-U resource
  • the carrier index may implicitly indicate that the current DCI is for SL-U
  • the configuration information received from the network device 140 may comprise the list of carriers
  • BWP Bandwidth Part
  • the BWP index may implicitly indicate that the current DCI is for SL-U
  • the configuration information received from the network device 140 may comprise the list of BWPs
  • ⁇ a resource pool index in the list of resource pools, which indicates the resource pool index of the scheduled SL-U resource
  • the resource pool index may implicitly indicate that the current DCI is for SL-U
  • the configuration information received from the network device 140 may comprise the list of resource pools
  • ⁇ at least one Resource Block (RB) set in the list of RB sets, which indicates one or more RB sets of the scheduled SL-U resource
  • the configuration information received from the network device 140 may comprise the list of RB sets
  • the interlace allocation may comprise a lowest index of a plurality of interlaces associated with the sidelink transmission
  • RB set may be indicated in combination with the interlace index
  • ⁇ a first index in the list of combinations of at least one of the following: a channel access type, a CP extension index, or CAPC; the list of combinations is also referred to as SL-UL-AccessConfigList list,
  • the first index indicates an entry within the list
  • the terminal device 110 transmitting a sidelink signal may perform a Channel Access (CA) procedure according to the indication, and if the CA procedure succeeds, the terminal device 110 transmits the sidelink signal on the scheduled SL-U resources
  • CA Channel Access
  • ⁇ an identity for a CG configuration, which indicates the CG index of the scheduled SL-U resource (for type 2 CG)
  • the CG index may implicitly indicate that the current DCI is for SL-U
  • the configuration information received from the network device 140 may comprise CG configuration for SL-U
  • a new DCI format such as DCI format 3-2, is used for SL-U scheduling.
  • the DCI is CRC scrambled by SL-RNTI or SL-CS-RNTI.
  • the DCI may indicates:
  • DCI format identifier 1 bit identifying DCI format, for example, “1” for DCI format 3-2, “0” for DCI format 3-0
  • DCI format 3-2 When DCI format 3-2 is identified, it includes:
  • the configuration information received from the network device 140 comprises the list of carriers; for example, M carriers are configured in the carrier list, and index #m indicates a carrier on unlicensed spectrum
  • the list of carriers may comprise one of the following:
  • ⁇ sidelink carrier list one or more carriers are configured
  • the configuration information received from the network device 140 may comprise configuration for sidelink channel occupancy (CO) sharing.
  • the configuration for sidelink CO sharing comprises at least one of the following:
  • the CO duration is the CO length to be initiated by the scheduled terminal device (such as the terminal device 110)
  • the network device 140 may schedule SL-U channel occupancy time (COT) sharing between terminal devices. In addition, more transmission opportunities are provided for sidelink terminal device on unlicensed spectrum.
  • COT channel occupancy time
  • the scheduling information may comprise a sidelink CO sharing indication, which indicates whether sidelink CO sharing is enabled or disabled.
  • the scheduling information may comprise at least one of the following:
  • ⁇ a second index in the list of combinations of at least one of the following: a channel access type, a CP extension index, or CAPC
  • the second index indicates an entry within the list
  • the second index may be used by the terminal device sharing the CO.
  • the scheduling information received by the terminal device 110 at 630 may indicate a sidelink CO sharing is enabled.
  • the terminal device 110 may perform (660) a channel access procedure.
  • the terminal device 110 may initiate (670) a sidelink CO.
  • the SCI transmitted by the terminal device 110 at 650 may indicate an index of sidelink CO duration in the list of available values of sidelink CO duration.
  • the SCI may also indicate the second index in the list of combinations of at least one of the following: a channel access type, a CP extension index, or CAPC.
  • the terminal device 120 receives the SCI and obtains (680) the index of sidelink CO duration and the second index in the SCI.
  • the terminal device 120 transmits a sidelink signal based on the index of sidelink CO duration and the second index by using resource within the sidelink CO which is initiated by the terminal device 110 at 670.
  • the terminal device 120 may transmit (690) the sidelink signal to the terminal device 130 by using the resource within the sidelink CO.
  • the terminal device 120 may also transmit the sidelink signal to the terminal device 110 by using the resource within the sidelink CO.
  • the terminal device 110 may receive HARQ feedback information associated with the data from the terminal device 120. In turn, the terminal device 110 may forward the HARQ feedback information to the network device 140. This will be described with reference to Fig. 8.
  • Fig. 8 illustrates an example a timing line between transmission and forwarding of HARQ feedback information in accordance with some embodiments of the present disclosure.
  • the terminal device 110 receives SL DCI (scheduling information) at t0.
  • the terminal device 110 transmits PSCCH and/or PSSCH on a resource scheduled by the SL DCI at t1.
  • the terminal device 110 receives HARQ feedback information for the PSSCH at t2.
  • the terminal device 110 forwards, to the network device 140, the HARQ feedback information on PUCCH or PUSCH at t3.
  • a time interval between t2 and t3 may be greater or equal to a sum of a time offset and a duration of a channel access procedure for the terminal device 110.
  • the scheduling information may comprise the time offset.
  • the duration of the channel access procedure may comprises at least one of the following:
  • ⁇ the duration is 25 microseconds for type 2A channel access procedure
  • ⁇ the duration is 16 microseconds for type 2B channel access procedure
  • ⁇ the duration is zero microseconds for type 2C channel access procedure
  • ⁇ the duration is multiple of 5 or 9 microseconds for type 1 channel access procedure.
  • reporting sidelink HARQ feedback information to a network device may be supported.
  • the network device may provide configuration information and/or scheduling information for mode 1 scheduling.
  • Fig. 9 illustrates a flowchart of an example method 900 in accordance with some embodiments of the present disclosure.
  • the method 900 can be implemented at a terminal device, such as one of the terminal device 110, the terminal device 120 and the terminal device 130 as shown in Fig. 1.
  • a terminal device such as one of the terminal device 110, the terminal device 120 and the terminal device 130 as shown in Fig. 1.
  • the method 900 will be described with reference to Fig. 1 as performed by the terminal device 110 without loss of generality.
  • the terminal device 110 receives at least one of configuration information and scheduling information based on a first identification. In other words, at block 910, the terminal device 110 performs at least one of the following: receiving the scheduling information based on the first identification, and receiving the configuration information.
  • the terminal device 110 determines a sidelink resource based on at least one of the scheduling information and the configuration information.
  • the terminal device 110 performs a sidelink transmission on the sidelink resource.
  • the first identification comprises at least one of the following:
  • Control Resource Set (CORESET) for receiving the scheduling information
  • RNTI Radio Network Temporary Identity
  • the method 900 further comprises: receiving configuration information.
  • determining the sidelink resource comprises: determining the sidelink resource based on the scheduling information and the configuration information.
  • the configuration information comprises at least one of the following:
  • ⁇ a list of combinations of at least one of the following: a channel access type, a Cyclic Prefix (CP) extension index, or Channel Access Priority Class (CAPC) , or
  • the CG configuration comprises at least one of the following:
  • the resource allocation for the sidelink transmission on unlicensed spectrum comprises at least one of the following:
  • BWPs Bandwidth Parts
  • RB Resource Block
  • receiving the configuration information comprises: receiving the configuration information through high layer signaling.
  • receiving the scheduling information based on a first identification comprises: receiving the scheduling information on PDCCH.
  • the scheduling information comprises at least one of the following:
  • the method 900 further comprises: performing channel access procedure based on the first index in the list of combinations.
  • the scheduling information further comprises at least one of the following:
  • the interlace allocation comprises a lowest index of a plurality of interlaces associated with the sidelink transmission.
  • the configuration for sidelink CO sharing comprises at least one of the following: a sidelink CO sharing indication, an indication for at least one indication field for the sidelink CO sharing in the scheduling information, or a list of available values of sidelink CO duration.
  • the scheduling information comprises at least one of the following: a sidelink CO sharing indication, an index of sidelink CO duration in the list of available values of sidelink CO duration, or a second index in the list of combinations.
  • the method 900 further comprises transmitting at least one of the following in sidelink control information: the index of sidelink CO duration in the list of available values of sidelink CO duration, or the second index in the list of combinations.
  • the method 900 further comprises: receiving Hybrid Automatic Repeat Request (HARQ) feedback information associated with the sidelink transmission on a first resource; and forwarding the HARQ feedback information to a network device on a second resource.
  • HARQ Hybrid Automatic Repeat Request
  • a time interval between the first resource and the second resource is greater or equal to a sum of a time offset and a duration of a channel access procedure.
  • the scheduling information comprises the time offset.
  • the duration of the channel access procedure comprises at least one of the following:
  • ⁇ the duration is 25 microseconds for type 2A channel access procedure
  • ⁇ the duration is 16 microseconds for type 2B channel access procedure
  • ⁇ the duration is zero microseconds for type 2C channel access procedure
  • ⁇ the duration is multiple of 5 or 9 microseconds for type 1 channel access procedure.
  • Fig. 10 illustrates a flowchart of an example method 1000 in accordance with some embodiments of the present disclosure.
  • the method 1000 can be implemented at a network device, such as one of the network devices 140 and 150 as shown in Fig. 1.
  • a network device such as one of the network devices 140 and 150 as shown in Fig. 1.
  • the method 1000 will be described with reference to Fig. 1 as performed by the network device 140 without loss of generality.
  • the network device 140 determines at least one of scheduling information and configuration information for sidelink transmission.
  • the network device 140 transmits at least one of the configuration information and the scheduling information based on a first identification. In other words, at block 1020, the network device 140 performs at least one of the following: transmitting the scheduling information based on the first identification, and transmitting the configuration information.
  • the first identification comprises at least one of the following:
  • Control Resource Set (CORESET) for receiving the scheduling information
  • RNTI Radio Network Temporary Identity
  • the method 1000 further comprises: determining configuration information; and transmitting the configuration information.
  • the configuration information comprises at least one of the following:
  • ⁇ a list of combinations of at least one of the following: a channel access type, a Cyclic Prefix (CP) extension index, or Channel Access Priority Class (CAPC) , or
  • the CG configuration comprises at least one of the following:
  • the resource allocation for the sidelink transmission on unlicensed spectrum comprises at least one of the following:
  • BWPs Bandwidth Parts
  • RB Resource Block
  • transmitting the configuration information comprises: transmitting the configuration information through high layer signaling.
  • transmitting the scheduling information based on a first identification comprises: transmitting the scheduling information on PDCCH.
  • the scheduling information comprises at least one of the following:
  • the scheduling information further comprises at least one of the following:
  • the interlace allocation comprises a lowest index of a plurality of interlaces associated with the sidelink transmission.
  • the configuration for sidelink CO sharing comprises at least one of the following: a sidelink CO sharing indication, an indication for at least one indication field for the sidelink CO sharing in the scheduling information, or a list of available values of sidelink CO duration.
  • the scheduling information comprises at least one of the following: a sidelink CO sharing indication, an index of sidelink CO duration in the list of available values of sidelink CO duration, or a second index in the list of combinations.
  • the method 1000 further comprises: receiving, from a first terminal device, Hybrid Automatic Repeat Request (HARQ) feedback information associated with the sidelink transmission on a second resource, a time interval between a first resource and the second resource being greater or equal to a sum of a time offset and a duration of a channel access procedure, the HARQ feedback information being transmitted on the first resource.
  • HARQ Hybrid Automatic Repeat Request
  • the scheduling information comprises the time offset.
  • the duration of the channel access procedure comprises at least one of the following:
  • ⁇ the duration is 25 microseconds for type 2A channel access procedure
  • ⁇ the duration is 16 microseconds for type 2B channel access procedure
  • ⁇ the duration is zero microseconds for type 2C channel access procedure
  • ⁇ the duration is multiple of 5 or 9 microseconds for type 1 channel access procedure.
  • Fig. 11 is a simplified block diagram of a device 1100 that is suitable for implementing some embodiments of the present disclosure.
  • the device 1100 can be considered as a further example embodiment of one of the terminal devices 110, 120 and 130 or the network device 140 or 150 as shown in Fig. 1. Accordingly, the device 1100 can be implemented at or as at least a part of one of the terminal devices 110, 120 and 130 or the network device 140 or 150.
  • the device 1100 includes a processor 1110, a memory 1120 coupled to the processor 1110, a suitable transmitter (TX) and receiver (RX) 1140 coupled to the processor 1110, and a communication interface coupled to the TX/RX 1140.
  • the memory 1120 stores at least a part of a program 1130.
  • the TX/RX 1140 is for bidirectional communications.
  • the TX/RX 1140 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 interface for bidirectional communications between gNBs or eNBs, S1 interface for communication between a Mobility Management Entity (MME) /Serving Gateway (S-GW) and the gNB or eNB, Un interface for communication between the gNB or eNB and a relay node (RN) , or Uu interface for communication between the gNB or eNB and a terminal device.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Un interface for communication between the gNB or eNB and a relay node (RN)
  • Uu interface for communication between the gNB or eNB and a terminal device.
  • the program 1130 is assumed to include program instructions that, when executed by the associated processor 1110, enable the device 1100 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to Figs. 1 to 10.
  • the embodiments herein may be implemented by computer software executable by the processor 1110 of the device 1100, or by hardware, or by a combination of software and hardware.
  • the processor 1110 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 1110 and memory 1120 may form processing means 1150 adapted to implement various embodiments of the present disclosure.
  • the memory 1120 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 1120 is shown in the device 1100, there may be several physically distinct memory modules in the device 1100.
  • the processor 1110 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 1100 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.
  • the components included in the apparatuses and/or devices of the present disclosure may be implemented in various manners, including software, hardware, firmware, or any combination thereof.
  • one or more units may be implemented using software and/or firmware, for example, machine-executable instructions stored on the storage medium.
  • parts or all of the units in the apparatuses and/or devices may be implemented, at least in part, by one or more hardware logic components.
  • FPGAs Field-programmable Gate Arrays
  • ASICs Application-specific Integrated Circuits
  • ASSPs Application-specific Standard Products
  • SOCs System-on-a-chip systems
  • CPLDs Complex Programmable Logic Devices
  • 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 any of Figs. 1 to 10.
  • 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.

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

Abstract

Des modes de réalisation de la présente divulgation concernent un procédé, un dispositif et des supports lisibles par ordinateur destinés aux communications. Le procédé consiste à recevoir, au niveau d'un premier dispositif terminal, des informations de configuration et/ou des informations de planification sur la base d'une première identification. Le procédé consiste également à déterminer une ressource de liaison latérale sur la base des informations de planification et/ou des informations de configuration. Le procédé consiste en outre à mettre en œuvre une transmission de liaison latérale sur la ressource de liaison latérale.
PCT/CN2022/072824 2022-01-19 2022-01-19 Procédé, dispositif et support lisible par ordinateur destinés aux communications Ceased WO2023137638A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021047589A1 (fr) * 2019-09-10 2021-03-18 Qualcomm Incorporated Réseau d'accès et programmation conjointe de liaison latérale
CN113950857A (zh) * 2019-06-17 2022-01-18 高通股份有限公司 用于基于模式的侧链路调度的系统和方法

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Publication number Priority date Publication date Assignee Title
CN113950857A (zh) * 2019-06-17 2022-01-18 高通股份有限公司 用于基于模式的侧链路调度的系统和方法
WO2021047589A1 (fr) * 2019-09-10 2021-03-18 Qualcomm Incorporated Réseau d'accès et programmation conjointe de liaison latérale

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