WO2020096280A1 - Procédé de réalisation d'une procédure de rétroaction de liaison latérale dans un système v2x nr et dispositif associé - Google Patents

Procédé de réalisation d'une procédure de rétroaction de liaison latérale dans un système v2x nr et dispositif associé Download PDF

Info

Publication number
WO2020096280A1
WO2020096280A1 PCT/KR2019/014678 KR2019014678W WO2020096280A1 WO 2020096280 A1 WO2020096280 A1 WO 2020096280A1 KR 2019014678 W KR2019014678 W KR 2019014678W WO 2020096280 A1 WO2020096280 A1 WO 2020096280A1
Authority
WO
WIPO (PCT)
Prior art keywords
resource
sidelink
terminal
transmitted
transmission
Prior art date
Application number
PCT/KR2019/014678
Other languages
English (en)
Korean (ko)
Inventor
박동현
Original Assignee
주식회사 아이티엘
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 주식회사 아이티엘 filed Critical 주식회사 아이티엘
Publication of WO2020096280A1 publication Critical patent/WO2020096280A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • 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
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present invention relates to a method and apparatus for performing a Sidelink (SL) feedback procedure in a New Radio (NR) V2X (Vehicle To Everything) system.
  • the present invention relates to a method and apparatus for transmitting and receiving sidelink feedback information in an NR V2X system.
  • the International Telecommunication Union (ITU) is developing the International Mobile Telecommunication (IMT) framework and standards, and is currently in the process of discussing 5G communication through a program called "IMT for 2020 and beyond.” .
  • 3GPP 3rd Generation Partnership Project
  • NR New Radio
  • V2X communication means a communication method of exchanging or sharing information such as traffic conditions while communicating with road infrastructure and other vehicles while driving.
  • V2X is a vehicle-to-vehicle (V2V), which means long term evolution (LTE) -based communication between vehicles, and a vehicle-to-pedestrian (V2P), which means LTE-based communication between a vehicle and a terminal carried by an individual.
  • V2I / N vehicle-to-infrastructure / network
  • a roadside unit may be a transport infrastructure entity implemented by a base station or a fixed terminal. For example, it may be an entity that transmits a speed notification to the vehicle.
  • the present invention can provide a method and apparatus for performing a sidelink feedback procedure in an NR V2X system.
  • the present invention can provide a method and apparatus for transmitting and receiving sidelink feedback information in an NR V2X system.
  • the present invention can provide a method and apparatus for transmitting a Physical Sidelink Feedback Channel (PSFCH) channel for each resource set when a plurality of resource sets exist in the NR V2X sidelink.
  • PSFCH Physical Sidelink Feedback Channel
  • the present invention can provide a method and apparatus for indicating a resource set for transmitting a PSFCH channel for each resource set when a plurality of resource sets exist in the NR V2X sidelink.
  • the present invention can provide a method for a terminal to transmit feedback information in an NR V2X system.
  • the method for transmitting the feedback information is a step in which the first terminal establishes a session based on at least one of a unicast and a groupcast with the second terminal, and the second terminal returns to the second terminal based on the established session.
  • the method may include transmitting data through a resource set and receiving feedback information based on the data from the second terminal by the first terminal.
  • the second terminal may transmit feedback information for data of the plurality of resource sets to the first terminal through one specific resource set.
  • FIG. 1 is a diagram showing a frame structure for downlink / uplink transmission to which the present disclosure can be applied.
  • FIG. 2 is a diagram showing a resource grid and a resource block to which the present disclosure can be applied.
  • FIG. 3 is a diagram showing a system architecture according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating a scenario in which NR V2X sidelink communication is performed in a 3GPP network according to an embodiment of the present invention.
  • FIG. 5 is a diagram for a method of transmitting a PSFCH in consideration of a plurality of resource sets according to an embodiment of the present invention.
  • FIG. 6 is a diagram for a method of transmitting a PSFCH in consideration of a plurality of resource sets according to an embodiment of the present invention.
  • FIG. 7 is a diagram for a method of transmitting a PSFCH in consideration of a plurality of resource sets according to an embodiment of the present invention.
  • FIG. 8 is a diagram for a method of instructing PSFCH transmission in consideration of a plurality of resource sets according to an embodiment of the present invention.
  • FIG. 9 is a view showing a method of transmitting a PSFCH in consideration of different neurology according to an embodiment of the present invention.
  • FIG. 10 is a view showing a method of transmitting a PSFCH in consideration of different neurology according to an embodiment of the present invention.
  • FIG. 11 is a flowchart illustrating a method of transmitting a PSFCH according to an embodiment of the present invention.
  • FIG. 12 is a flowchart illustrating a method for transmitting a PSFCH according to an embodiment of the present invention.
  • FIG. 13 is a view showing the configuration of a base station apparatus and a terminal apparatus according to an embodiment of the present invention.
  • the present invention provides a method for a terminal to transmit feedback information in a NR (New Radio) V2X (Vehicle to everything) system, wherein the first terminal establishes a session based on at least one of the second terminal, unicast and groupcast. Establishing a step, the first terminal transmitting data through a resource set to the second terminal based on the established session, and the first terminal receiving feedback information based on the data from the second terminal.
  • the second terminal may receive feedback information on data of the plurality of resource sets through one specific resource set. It is possible to provide a method for transmitting feedback information, which is transmitted to one terminal.
  • first and second are used only for the purpose of distinguishing one component from other components, and do not limit the order or importance of components, etc., unless otherwise specified. Accordingly, within the scope of the present disclosure, the first component in one embodiment may be referred to as a second component in another embodiment, and likewise the second component in one embodiment may be the first component in another embodiment It can also be called.
  • the components that are distinguished from each other are for clarifying each feature, and the components are not necessarily separated. That is, a plurality of components may be integrated to be composed of one hardware or software unit, or one component may be distributed to be composed of a plurality of hardware or software units. Accordingly, such integrated or distributed embodiments are included within the scope of the present disclosure, unless otherwise stated.
  • components described in various embodiments are not necessarily essential components, and some may be optional components. Accordingly, an embodiment composed of a subset of components described in one embodiment is also included in the scope of the present disclosure. Also, embodiments including other elements in addition to the elements described in various embodiments are included in the scope of the present disclosure.
  • this specification is described for a wireless communication network, the work performed in the wireless communication network is performed in the process of controlling the network and transmitting data in a system (for example, a base station) that is in charge of the wireless communication network, or the wireless The operation can be performed at the terminal coupled to the network.
  • a system for example, a base station
  • BS base station
  • eNB eNode B
  • AP access point
  • UE User Equipment
  • MS Mobile Station
  • MSS Mobile Subscriber Station
  • SS Subscriber Station
  • non-AP STA non-AP STA
  • transmitting or receiving a channel includes transmitting or receiving information or a signal through the corresponding channel.
  • transmitting a control channel means transmitting control information or a signal through the control channel.
  • transmitting a data channel means transmitting data information or a signal through the data channel.
  • NR system is used for the purpose of distinguishing a system to which various examples of the present disclosure are applied from an existing system, but the scope of the present disclosure is not limited by these terms.
  • NR system is used herein as an example of a wireless communication system capable of supporting various subcarrier spacing (SCS)
  • SCS subcarrier spacing
  • NR system itself is a wireless communication system supporting a plurality of SCSs. It is not limited.
  • FIG. 1 is a diagram illustrating an NR frame structure and a numerology according to an embodiment of the present invention.
  • the basic unit of time domain is Can be At this time, ego, Can be In addition, May be a constant for a multiple relationship between an NR time unit and an LTE time unit. In reference time unit, in LTE , And Can be defined.
  • a time structure of a frame for downlink / uplink (DL / UL) transmission is Can have At this time, one frame It consists of 10 subframes corresponding to time. The number of consecutive OFDM symbols per subframe is Can be Further, each frame is divided into two half frames, and the half frame may be composed of 0 to 4 subframes and 5 to 9 subframes. At this time, half frame 1 (half frame 1) may be composed of 0 to 4 subframes, and half frame 2 (half frame 2) may be composed of 5 to 9 subframes.
  • the transmission timing of the uplink transmission frame i is determined based on Equation 1 below based on the downlink reception timing at the terminal.
  • Equation 1 below May be a TA offset value that occurs due to a duplex mode difference. Basically, in FDD (Frequency Division Duplex) Has 0, but in TDD (Time Division Duplex), considering the margin for DL-UL switching time, It can be defined as a fixed value.
  • FIG. 2 is a diagram illustrating a resource grid and a resource block.
  • resource elements in a resource grid may be indexed according to each subcarrier spacing. At this time, one resource grid may be generated for each antenna port and for each subcarrier spacing. Uplink and downlink transmission and reception may be performed based on a corresponding resource grid.
  • One resource block is composed of 12 resource elements on the frequency domain. As shown in Equation 2 below, an index for one resource block per 12 resource elements ( ). The index for the resource block can be utilized within a specific frequency band or system bandwidth.
  • numerology may be defined based on subcarrier spacing (SCS), CP length, and the number of OFDM symbols per slot used in an orthogonal frequency division multiplexing (OFDM) system. .
  • SCS subcarrier spacing
  • OFDM orthogonal frequency division multiplexing
  • the above-described values may be provided to the terminal through higher layer parameters DL-BWP-mu and DL-BWP-cp (DL) and UL-BWP-mu and UL-BWP-cp (UL).
  • the normal slot may be defined as a basic time unit used to basically transmit one data and control information in the NR system.
  • the length of the normal slot may basically consist of the number of 14 OFDM symbols.
  • the subframe has an absolute time length corresponding to 1 ms in the NR system and can be used as a reference time for the length of another time interval.
  • a time period such as a subframe of LTE may be required in the NR standard.
  • data may be transmitted based on a transmission time interval (TTI) that is a unit time, and the TTI may be configured in one or more subframe units.
  • TTI transmission time interval
  • one subframe may be set to 1 ms, and 14 OFDM symbols (or 12 OFDM symbols) may be included.
  • a non-slot can be defined in the NR.
  • the non-slot may mean a slot having a number as small as at least one symbol than a normal slot.
  • the latency may be reduced through a nonslot having a smaller number of symbols than a normal slot.
  • the number of OFDM symbols included in the non-slot may be determined in consideration of the frequency range. For example, a non-slot of 1 OFDM symbol length may be considered in a frequency range of 6 GHz or more. As another example, the number of OFDM symbols defining a non-slot may include at least two OFDM symbols.
  • the range of the number of OFDM symbols included in the non-slot may be configured as the length of the mini-slot up to the length of the normal slot-1.
  • the number of OFDM symbols may be limited to 2, 4 or 7 symbols, but is not limited to the above-described embodiment.
  • Subcarrier spacing corresponding to 1 and 2 is used, and in the unlicensed band above 6 GHz Subcarrier spacing corresponding to 3 and 4 may be used.
  • SSB Synchronization Siganl Block
  • Table 2 shows each subcarrier spacing setting for the normal CP.
  • Number of OFDM symbols per slot Indicates.
  • Table 2 shows the number of OFDM symbols per slot, the number of slots per frame, and the number of slots per subframe according to each subcarrier spacing value as provided in Table 1. At this time, Table 2 shows the above-mentioned values based on a normal slot having 14 OFDM symbols.
  • the extended CP may be applied when the subcarrier spacing is 60 kHz.
  • Table 3 is an extended CP Number of OFDM symbols per slot Can represent each value based on 12 normal slots. In this case, referring to Table 3, in the case of an extended CP conforming to 60 kHz subcarrier spacing, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe may be indicated.
  • the NR base station i.e. gNB
  • the SS / PBCH block may be the aforementioned SSB.
  • the terminal can check the reception sensitivity of the synchronization signal (Synchronization Signal) in order to find the optimal cell in the best channel environment.
  • the terminal may perform frequency / time synchronization and cell identification to perform initial access to an optimal channel among one or more channels in a specific frequency band operated based on the checked reception sensitivity.
  • the UE can check the boundary of the OFDM symbol timing through the above-described operation, and then can start decoding the PBCH in the same SSB.
  • the terminal may perform PBCH decoding by receiving a PBCH DMRS (Demodulation Reference Signal). Also, the terminal may acquire 3 LSB bit information among SSB index information bits through PBCH DMRS. Subsequently, the UE can obtain information included in the PBCH payload by performing PBCH decoding. Thereafter, the terminal may perform the decoding procedure of SIB 1 using the information obtained through the PBCH.
  • PBCH DMRS Demodulation Reference Signal
  • a UE may receive Remaining System Information (RMSI) as a system information not transmitted on a PBCH through a broadcast signal or channel.
  • RMSI Remaining System Information
  • OSI system information
  • paging channels as additional system information through a broadcast signal or a channel.
  • the UE may perform access to the base station through a RACH (Random Access Channel) procedure, and then perform mobility management.
  • RACH Random Access Channel
  • the terminal when the terminal receives the SSB, there is a need to set the SSB composition (SSB Composition) and the SS Burst Set composition (SS Burst Set Composition).
  • SSB Composition SSB Composition
  • SS Burst Set Composition SS Burst Set Composition
  • V2X user equipments UEs can exchange self-state information through a sidelink, and exchange the above-described information with infrastructure nodes and / or pedestrians. It became possible.
  • V2X service eg LTE Rel-15
  • carrier aggregation in a sidelink high order modulation, latency reduction, transmission diversity (Tx) diversity
  • new features were introduced considering the feasibility of sTTI.
  • coexistence short resource pool
  • V2X UEs was required, and the above-described services were provided based on LTE.
  • SA System Aspect 1
  • vehicle driving Vehicle Platooning
  • extended sensors may be a technique of collecting and exchanging data obtained from a sensor or video image.
  • advanced driving may be a technology in which a vehicle is driven based on full automation or semi-automation.
  • remote driving may be a technology for providing a technology and an application for remote control of a vehicle, and more detailed information on the above may be as shown in Table 5 below.
  • the above-described SA1 is an eV2X (enhanced V2X) support technology for supporting a new V2X service
  • both LTE and NR can be considered.
  • the NR V2X system may be a first V2X system.
  • the LTE V2X system may be a second V2X system. That is, the NR V2X system and the LTE V2X system may be different V2X systems.
  • related content is described based on a method for satisfying low delay and high reliability required in the NR sidelink based on the NR V2X system.
  • the same or similar configuration may be extended and applied to the LTE V2X system, and is not limited to the following embodiments.
  • the LTE V2X system may be applied to parts that can be interoperable, and is not limited to the following embodiments.
  • NR V2X capability (capability) may not necessarily be limited to support only V2X services, and which V2X RaT is used may be selected.
  • an NR sidelink may be used.
  • the NR sidelink frequency (NR Sidelink Frequency) may consider FR1 (i.e. up to 52.6 GHz), which is a frequency of 6 GHz or less and FR2 of a frequency exceeding 6 GH.
  • FR1 i.e. up to 52.6 GHz
  • FR2 FR2 of a frequency exceeding 6 GH.
  • both unlicensed ITS bands and licensed bands may be considered. That is, as described above, a common design method for supporting each frequency band may be required. To this end, an NR sidelink design considering an NR system may be required.
  • an NR sidelink design capable of basically supporting beam-based transmission and reception may be required, and is not limited to the above. .
  • NR PSSCH Physical Sidelink Shared Channel
  • NR PSCCH Physical Sidelink Control Channel
  • SCI Sidelink Control Information
  • SCI is a format in which fields for control information related to scheduling of an NR sidelink data channel are defined, and control information transmitted through the NR PSCCH can be transmitted based on the SCI format.
  • NR PSFCH Physical Sidelink Feedback Channel
  • the NR PSFCH may be an NR HARQ feedback channel as a physical channel.
  • HARQ-ACK feedback information, channel status information (CSI), and other information corresponding to the NR sidelink data channel may be transmitted through the NR PSFCH.
  • SFCI Segment Feedback Control Information
  • SFCI Segment Feedback Control Information
  • SFCI is HARQ-ACK
  • CQI Channel Quality Information
  • PMI Precoding Matrix Indicator
  • RI Rank Indicator
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • pathgain / pathloss SRI ( Scheduling Request Indicator)
  • CRI Contention Resolution Identity
  • interference condition may include at least one or more of vehicle motion information, it is not limited to the above-described embodiment.
  • NR SLSS Segment Synchronization Signal
  • PSBCH Physical Sidelink Broadcast Channel
  • NR SLSS / PSBCH block is defined as a synchronous and broadcast channel block in which an NR SL sync signal and a broadcast channel are transmitted in one continuous time in the physical layer. Can be.
  • the NR SLSS / PSBCH block may be periodically transmitted based on a set of one or more block indices to support beam-based transmission on the NR frequency band.
  • the synchronization signal is composed of a PSSS (Primary Sidelink Synchronization Signal) and a SSSS (Secondary Sidelink Synchronization Signal), and a sequence for the signal may be generated based on at least one SLSSID value.
  • the PSBCH can be transmitted with SLSS for the purpose of delivering system information required to perform V2X SL communication.
  • the SLSS / PSBCH block may be periodically transmitted in the form of a set of SLSS / PSBCH block indices to support beam-based transmission, as described above.
  • Table 6 below may be each term applied in the following invention, but is not limited to the above-described embodiment.
  • the following describes the NR V2X sidelink design method that satisfies the requirements for the above-mentioned advanced V2X (i.e. eV2X) services.
  • FR1 and FR2 ie up to 52.6 GHz
  • ITS bands and licensed bands ITS
  • the frequency for the NR V2X sidelink communication may be further considered at least one or more of the elements shown in Table 7 below based on technologies required in the following new system different from the existing system (e.g. LTE). That is, it is necessary to satisfy the new V2X service requirements by applying the NR V2X side link based on NR radio access technology, particularly uplink transmission related technologies, as shown in Table 7 below.
  • the physical channel, signal, basic slot structure and physical resource of the NR V2X sidelink may be as shown in Table 8 below, as described above.
  • FIG. 3 may be a basic network architecture configuration considering NR V2X sidelink.
  • 5GC 5G Core NW
  • the NG interface can be set in between.
  • an Xn interface may be set between NG-RAN nodes 320-1, 320-2, 330-1, and 330-2.
  • gNB NR UP / CP protocol, 320-1, 320-2
  • NG-eNB E-UTRA UP / CP protocol, 330-1, 330-2 constituting the NG-RAN in the above-described architecture are used.
  • the nodes can be interconnected through an Xn interface.
  • both the LTE sidelink terminal and the NR sidelink terminal may be controlled by NG-RAN (i.e.LTE Uu and NR Uu) based on gNB and NG-eNB. Therefore, when the NR sidelink terminal transmits synchronization information, it can receive synchronization information from LTE Uu or NR Uu link and transmit NR sidelink synchronization information (eg SL Synchronization Signal / SL Physical broadcast Channel) based on the information. It is not limited to the above-described embodiment. That is, the NR sidelink terminal can acquire synchronization information not only through the NR Uu link but also through the LTE Uu link.
  • NG-RAN i.e.LTE Uu and NR Uu
  • NR sidelink synchronization information eg SL Synchronization Signal / SL Physical broadcast Channel
  • V2X side link terminals may perform V2X side link communication.
  • certain conditions need to be satisfied in order for the V2X sidelink terminals to start communication, and the conditions for this may be as shown in Table 9 below. That is, the V2X sidelink terminal can perform V2X sidelink communication in an RRC idle state, an inactive state, or a connected mode.
  • V2X sidelink terminals performing V2X sidelink communication need to be registered in a selected cell on a frequency used or belong to the same PLMN.
  • V2X sidelink terminal is OOC on the frequency for V2X sidelink communication
  • V2X sidelink communication can be performed only when V2X sidelink communication can be performed based on pre-configuration information. .
  • the transmitting terminal may receive a setting for transmitting sidelink synchronization information before transmitting the corresponding synchronization information.
  • the transmitting terminal may receive a setting for transmitting sidelink synchronization information based on the system information message or RRC reset message (for RRC CONNECTED UE) broadcast from the NG-RAN nodes described above.
  • RRC reset message for RRC CONNECTED UE
  • sidelink synchronization information may be transmitted based on preset information, as described above.
  • FIG. 4 may be an example of a scenario in which NR V2X sidelink communication is performed in a 3GPP network based on the above.
  • NR V2X sidelink communication may be performed on a 3GPP network (hereinafter, NG-RAN), and the presence of a GNSS signal may be additionally considered.
  • NG-RAN 3GPP network
  • each NR V2X sidelink terminal may be an IC or OOC based on EUTRA NG-eNB 410. In addition, it may be an IC or OOC based on the gNB 420. In addition, it may be an IC or OOC based on the GNSS 430.
  • the NR V2X sidelink terminals can select the source of the synchronization reference based on the location and capability of the terminal.
  • scenarios shown in Table 10 below may be considered, and are not limited to the above-described embodiment.
  • NR SCS is any one of SCS values for NR DL SS / PBCH, SCS values for NR data / control channel (BWP), or reference SCS values defined / set for comparison of NR V2X SCS values.
  • BWP data / control channel
  • NR SCS is defined for comparison of SCS values for NR V2X SLSS / PSBCH, SCS values for NR V2X BWP or resource pool (resource pool (data / control channel)), or NR V2X SCS values.
  • It may be one of the set reference SCS values, and is not limited to the above-described embodiment.
  • a 30 kHz SCS value may be set and used as a default value. However, this is only one example and is not limited to the above-described embodiment.
  • unicast transmission may mean that one terminal transmits a message to another terminal. That is, it may mean one-to-one transmission.
  • broadcast transmission may be a method of transmitting a message to all terminals regardless of whether a receiving terminal supports a service. That is, one terminal can transmit a message regardless of whether a plurality of receiving terminals support the service.
  • the groupcast transmission method may be a method of sending a message to a plurality of terminals belonging to the group.
  • V2X SL terminal the physical layer of the V2X sidelink terminal (hereinafter referred to as V2X SL terminal) may operate based on the instruction determined by the upper layer, but is not limited to the above-described embodiment.
  • the V2X SL terminal may perform a corresponding transmission / reception after a session for transmitting a corresponding unicast or groupcast data is formed.
  • the physical layer parameter information for data transmission corresponding to unicast or groupcast may be previously known in the physical layer of the V2X SL terminal.
  • the V2X SL terminal may recognize by receiving the above-described information in advance from the base station.
  • the above-described information may be information preset to the V2X SL terminal.
  • the parameter information may include at least one ID value as shown in Table 11 below.
  • destination group ID and source ID information may be included in the parameter information in relation to the group cast.
  • a destination ID and a source ID may be included in parameter information in connection with unicast.
  • the HARQ process ID may also be included in parameter information, which will be described later.
  • unicast or multicast data transmission and reception may be applied when a small number of V2X terminals exist around the transmitting V2X terminal and the session is maintained stably.
  • data transmission may be mainly performed based on broadcast transmission.
  • the above-described content is only one example and is not limited thereto.
  • unicast or groupcast transmission and reception may be determined at an application layer stage as an upper layer.
  • data that can be allocated to transmission / reception made in the application layer may not be directly mapped to a radio layer.
  • a certain mapping relationship or connection establishment procedure may be required to perform data transmission and reception on the radio layer, but is not limited thereto.
  • the base station collects location information of the terminals and can determine whether terminals capable of transmitting and receiving unicast or groupcast data are adjacent to each other. In this case, as an example, the base station may determine whether the terminals are adjacent based on the threshold, and the determination for the threshold may be any value.
  • the base station When it is determined that the terminals in the cell are adjacent to each other, the base station initializes the discovery procedure, and the terminals can perform the discovery procedure to discover each other based on the initialization procedure.
  • the base station may design a new discovery channel to periodically transmit and receive the corresponding channel to determine whether a V2X SL terminal exists in the vicinity.
  • the base station can transmit and receive the discovery message (discovery message) on the V2X data channel (V2X data channel) to determine the presence of the neighboring terminal, it is not limited to the above-described embodiment.
  • session establishment for unicast or groupcast data transmission and reception may be completed based on the above-described procedures.
  • the upper layer can inform the physical layer of the session establishment information and perform physical layer operations such as HARQ-ACK, CSI, and link adaptation.
  • PSFCH Physical Sidelink Feedback Channel
  • the following describes a physical resource selection method for transmitting a PSFCH (Physical Sidelink Feedback Channel) channel for HARQ-ACK feedback transmission during the above-described operation.
  • PSFCH Physical Sidelink Feedback Channel
  • the PSFCH (feedback channel) for delivering feedback information may be defined as a new physical channel, but may be defined as a feedback channel for delivering feedback information by recycling a processing chain for an existing control channel (eg PSCCH). . That is, the feedback information may be transmitted through a newly defined channel (e.g. PSFCH) or may be transmitted through a channel that reuses the existing control channel as much as possible.
  • a newly defined channel e.g. PSFCH
  • PSFCH Physical Service Set
  • “transferred over the PSFCH channel” may be replaced with “a new physical channel is not defined and feedback information is included in the physical channel by recycling an existing control channel and transmitted”. Further, as an example, some feedback information is transmitted through the PSFCH channel, and some feedback information may be included in the control channel and transmitted, and is not limited to the above-described embodiment.
  • PSFCH is mainly described for convenience of description.
  • the session when establishing a session for unicast and / or groupcast transmission in the NR sidelink, the session may be performed based on a discovery procedure. More specifically, at least two terminals (discoveree, discoverer) that discover each other through a discovery procedure may store each other's context. Thereafter, the terminals can transmit and receive a message in one unicast or groupcast session based on layer-2 ID (layer-1 ID is used for filtering data packets).
  • transmitting and receiving a message based on the above-described session may mean exchanging signaling in a handshake form between two terminals at least when transmitting unicast or groupcast.
  • broadcast may mean that the above-described signaling operation is not necessary, and that the transmission is performed to a plurality of terminals unilaterally.
  • a unicast session may be established based on one source ID and a specific destination ID of another terminal.
  • a groupcast session may be established based on one group specific destination ID.
  • broadcast may be identified by one service (e.g. flow-specific destination ID) as one sidelink session. Therefore, it can be considered that all transmissions are performed within the same session for the same service.
  • the following is based on recognizing at least the layer 1 context between terminals to perform data transmission and reception on the sidelink and connecting one session through one link having one reliable QoS. To describe.
  • the terminals can perform message exchange based on the established session.
  • the terminal may recognize the presence of neighboring terminals based on the discovery message as described above.
  • the terminals may exchange the following information as control information.
  • the terminals may exchange control information necessary for feedback transmission on a specific sidelink resource set.
  • the terminals may exchange information on the total number of sidelink resource sets per unicast and / or groupcast session in the session establishment process.
  • Total number of SL resource sets eg resource pool, BWP and / or carrier
  • the total number of sidelink resource sets per unicast and / or groupcast session is unicast and / Or It may mean the total number of sidelink carriers per groupcast session.
  • the total number of sidelink resource sets per unicast and / or groupcast session may be the total number of one or a plurality of sidelink BWPs set for one or a plurality of sidelink carriers.
  • the total number of sidelink resource sets per unicast and / or groupcast session may mean the total number of resource pools set in the sidelink BWP as described above.
  • information for each resource pool, BWP, or carrier that can be included as one resource (hereinafter, divided into sidelink resource indexes) in the total number of the resource set includes as many as the total number of sidelink resource sets described above. Can be exchanged.
  • configuration information for each resource pool may be configured.
  • the configuration information for one resource pool may include at least one or more of allocation information on a specific time / frequency resource and neurology information.
  • configuration information for one resource pool may further include other information, and is not limited to the above-described embodiment.
  • configuration information for BWP and carrier may also be configured for each session described above. You can.
  • the total number of sidelink resource sets per unicast and / or groupcast session may mean the total number of resource pools set for one or a plurality of sidelink carriers per unicast and / or groupcast session. .
  • the UE may exchange sidelink resource index information.
  • SL resource index eg SL carrier / BWP / resource pool index
  • the sidelink resource index information may be sidelink resource index information set for feedback transmission among a plurality of sidelink resource sets.
  • sidelink resource index information corresponding to one or a portion of a plurality of sidelink resource sets configured for feedback transmission may be required. have.
  • the terminals can exchange the above-described information.
  • the index information for the above-described operation may be exchanged and set as physical layer parameter information among related terminals in the process of establishing a unicast and / or groupcast session.
  • corresponding physical layer parameter information may be set through RRC signaling by the base station. Thereafter, the terminals can exchange parameter information set in the session establishment process, and are not limited to the above-described embodiment.
  • the terminals may further exchange information about the number of feedback cell groups.
  • the number of feedback cell group (eg 1 or 2)
  • a group of resource sets associated with each feedback transmission may be defined as a feedback cell group.
  • the terminals may exchange information about the feedback cell group in the process of establishing a session.
  • it may be desirable to limit up to two cell groups for feedback transmission, but is not limited thereto. That is, the terminals can exchange the number information of the feedback cell group during the session establishment process, and are not limited to the above.
  • specific examples will be described based on the above.
  • 5 is a diagram illustrating a method in which PSFCH is transmitted based on different resources.
  • the transmitting terminal may simultaneously transmit data in a plurality of sidelink resource sets (e.g. resource pool / BWP / carrier). Thereafter, the receiving terminal may transmit feedback information to the transmitting terminal based on the data transmitted to the transmitting terminal.
  • the feedback information may be HARQ-ACK, but is not limited thereto.
  • the feedback information may include at least one or more of CQI, PMI, RI, RSRP, RSRQ, path gain / pathloss, SRI, CRI, interference condition, and vehicle motion, and is not limited to the above-described embodiment.
  • the sidelink resource set may be at least one of a sidelink resource pool (SL resource pool), a sidelink BWP (SL BWP, Bandwidth part) and a sidelink carrier (SL carrier) set for a terminal for sidelink data transmission and reception.
  • SL resource pool sidelink resource pool
  • SL BWP sidelink BWP
  • Bandwidth part sidelink carrier
  • SL carrier sidelink carrier
  • the sidelink resource set may be set based on a combination of a sidelink resource pool, sidelink BWP and sidelink carriers. That is, the sidelink resource set means that different frequency resources are used, and is not limited to the above-described embodiment.
  • the V2X SL terminal can perform transmission of feedback information associated with each resource set.
  • the feedback information may be transmitted through the PSFCH corresponding to each sidelink resource pool.
  • feedback information may be transmitted through a PSFCH corresponding to each sidelink BWP.
  • it may be transmitted through the PSFCH corresponding to each sidelink carrier. That is, the terminal may transmit feedback information through the associated PSFCH in each sidelink resource set regardless of whether the PSFCH transmission resource is determined based on a specific resource set.
  • the transmitting terminal performs data through resource set 1 (eg SL resource pool, BWP, Carrier # 0) and resource set 2 (eg SL resource pool, BWP, Carrier # 1).
  • / SA 510-1, 510-2) may be transmitted to the receiving terminal.
  • each data / SA 510-1, 510-2) may be transmitted in the n-th slot (slot n).
  • the receiving terminal may transmit feedback information for data / SAs 510-1 and 510-2 of each resource set to the transmitting terminal through the respective PSFCHs 520-1 and 520-2.
  • PSFCHs 520-1 and 520-2 for each resource set may be set for each resource set.
  • the resources for the PSFCH can be transmitted on a specific time / frequency determined in the same sidelink resource set as the data / SA (510-1, 510-2) is transmitted resource set have. That is, the PSFCHs 520-1 and 520-2 may be transmitted through the same resource set from which the data / SA is transmitted.
  • the exact physical resource through which the PSFCH is transmitted may be determined as a specific resource in advance by a predetermined method in the above-described resource set.
  • the exact physical resource through which the PSFCH is transmitted may be indicated as a specific resource in the above-described resource set through a separate indication through SCI. That is, the PSFCH is transmitted through the same resource set as the data / SA transmitted resource set, and specific physical resources in the resource set may be set by various methods, and is not limited to the above-described embodiment.
  • the receiving terminal when the receiving terminal receives the data / SA from the transmitting terminal, the receiving terminal on the determined specific time / frequency resources in the same sidelink resource set as the resource set that received the data / SA PSFCH transmission can be performed, respectively.
  • the receiving terminal since a plurality of sidelink data / SA transmission and reception are performed, inefficiency of resource utilization may occur.
  • PSFCH transmission having a relatively smaller number of transmission bits than data / SA transmission blocks is performed in all sidelink resource sets configured for unicast and / or groupcast data / SA transmission and reception, resulting in inefficiency for resource utilization. This can happen.
  • inefficiency for resources may be greater.
  • PSFCH transmission on all sidelink resource sets configured for unicast and / or groupcast data / SA transmission / reception it causes potential additional interference and collision issues to other terminals, thereby causing system performance degradation.
  • the PSFCH channel can be performed on a specific sidelink resource set based on the same synchronization, and a specific method for this is described. At this time, the performance of the NR V2X system may be improved through the above-mentioned.
  • the following describes an efficient PSFCH transmission method for unicast and / or groupcast sessions in which data / SA transmission and reception on a plurality of sidelink resource sets are connected.
  • the following describes a specific method based on the number of sidelink resource sets through which PSCCH and / or PSSCH are transmitted and the number of sidelink resource sets through which PSFCH can be transmitted can be asymmetric. That is, the number of sidelink resource sets through which PSCCH and / or PSSCH are transmitted may be different from the number of sidelink resource sets through which PSFCH can be transmitted.
  • unicast data / SA transmission / reception with a plurality of sidelink resource sets may be considered.
  • a plurality of sidelink resource sets may be set.
  • the two terminals may perform unicast data / SA transmission and reception through each of a plurality of set sidelink resource sets.
  • the sidelink resource set may refer to a resource area in which data / SA transmission and reception can be performed, and the data / SA may be transmitted and received through a specific time / frequency resource in each resource set.
  • a specific time / frequency resource in each resource set through which data / SA is transmitted may be set in advance or indicated by signaling.
  • a plurality of sidelink resource sets may be set between terminals in a corresponding group.
  • UEs in the corresponding group may perform data / SA transmission / reception through each resource set. That is, a plurality of resource sets exist based on unicast and / or multicast between two target terminals, and data / SA transmission and reception may be performed based on this.
  • each data / SA can be transmitted through the plurality of resource sets as described above.
  • the transmitting terminal is a plurality of sidelink resource sets, respectively.
  • the receiving terminal may transmit each PSFCH for each transmission of a plurality of sidelink resource sets through one specific sidelink resource set. That is, the receiving terminal can transmit the PSFCH only in a specific sidelink resource set among a plurality of sidelink resource sets.
  • the exact time / frequency resource in which each PSFCH is transmitted in a specific sidelink resource set may be preset or indicated by signaling, and is not limited to the above-described embodiment. That is, unlike data / SA being transmitted through a plurality of sidelink resource sets, the PSFCH can be transmitted through one specific sidelink resource set.
  • the transmitting terminal is configured through resource set 1 (eg SL resource pool, BWP, Carrier # 0) and resource set 2 (eg SL resource pool, BWP, Carrier # 1).
  • Data / SAs 610-1 and 610-2 may be transmitted to the receiving terminal, respectively.
  • the receiving terminal may transmit feedback information for each data / SA 610-1 and 610-2 through the PSFCH.
  • feedback information for each data / SA 610-1, 610-2 may be transmitted in one specific sidelink resource set.
  • feedback information may be transmitted through the PSFCH 620-1 set in the specific sidelink resource set described above.
  • the above-described specific sidelink resource set may be sidelink resource set 1. That is, the PSFCH 620-1 may be transmitted in a sidelink resource set as a specific sidelink resource set. In this case, as an example, the PSFCH 620-1 may be transmitted through a specific time / frequency resource within the sidelink resource set 1, as described above. At this time, as an example, referring to FIG. 6, the transmitting terminal may transmit the respective data / SAs 610-1 and 610-2 to the receiving terminal through sidelink resource set 1 and sidelink resource set 2, respectively.
  • the receiving terminal is a specific sidelink resource set, and provides feedback information for each data / SA 610-1, 610-2 through one PSFCH 620-1 resource in resource set 1 as well.
  • Can transmit That is, when the transmitting terminal transmits each data / SA (610-1, 610-2) to the receiving terminal through each sidelink resource set in the same slot (slot n), the receiving terminal is the same slot (slot n At +1), PSFCH 620-1 for each data / SA 610-1 and 610-2 may be transmitted through a specific resource within one specific sidelink resource set.
  • the transmitting terminal transmits each data / SA (610-1, 610-2) to the receiving terminal in different slots (eg slot n and slot n-1)
  • the receiving terminal is the respective data / PSFCH 620-1 transmission for SAs 610-1 and 610-2 can be performed through one resource in a specific resource set in the same slot (slot n + 1), and is limited to the above-described embodiment Does not work. That is, feedback information for data / SA corresponding to different times may also be transmitted through specific resources in one specific resource set, and is not limited to the above-described embodiment.
  • the transmitting terminal transmits data / SA 610-3 through resource set 1 as one resource set in the m-th slot
  • the receiving terminal performs PSFCH through resource set 1 in the m + 1th slot.
  • (620-2) Transmission can be performed.
  • the transmitting terminal transmits data / SA 610-4 through resource set 2 as one resource set in the k-th slot
  • the receiving terminal performs PSFCH (620-) through resource set 1 in the k + 1th slot.
  • the resource set through which the PSFCH is transmitted may be determined as a specific resource set irrespective of the resource set through which the data / SA is transmitted, and the PSFCH may be transmitted through resources in the specific resource set.
  • the transmitting terminal performs resource set 1 (eg SL resource pool, BWP, Carrier # 0) and resource set 2 (eg SL resource pool, BWP, Carrier # 1).
  • resource set 1 eg SL resource pool, BWP, Carrier # 0
  • resource set 2 eg SL resource pool, BWP, Carrier # 1).
  • a set of resources for which PSFCH transmission is performed may be indicated in the SCI for each data / SA 710-1 and 710-2.
  • the feedback information for each data / SA 710-1 and 710-2 is based on the SCI indication, and the PSFCH 720-720 is configured through a resource set in one resource set (eg resource set 1). 1) Transmission can be performed.
  • the transmitting terminal performs data / SA (respectively) through resource set 1 (eg SL resource pool, BWP, Carrier # 0) and resource set 2 (eg SL resource pool, BWP, Carrier # 1), respectively. 710-3 and 710-4) may be simultaneously transmitted to the receiving terminal.
  • resource set 1 eg SL resource pool, BWP, Carrier # 0
  • resource set 2 eg SL resource pool, BWP, Carrier # 1
  • 710-3 and 710-4 may be simultaneously transmitted to the receiving terminal.
  • a set of resources for which PSCFH transmission is performed may be indicated in the SCI for each data / SA 710-3 and 710-4.
  • the feedback information for each data / SA 710-3 and 710-4 is a resource set in one resource set (eg resource set 2) based on the SCI indication, and the PSFCH 720-2 It can be transmitted through.
  • data / SA 710-3 indicates resource set 2 for a feedback channel
  • data / SA 710-4 feedbacks from the same resource set from which data / SA 710-4 was received. It is possible to instruct to perform channel transmission. Based on this, as described above, feedback information for each data / SA 710-3 and 710-4 may be transmitted through the PSFCH 720-2 set in one resource set (eg resource set 2). have.
  • the transmitting terminal performs data / SA (respectively) through resource set 1 (eg SL resource pool, BWP, Carrier # 0) and resource set 2 (eg SL resource pool, BWP, Carrier # 1). 710-5 and 710-6) may be simultaneously transmitted to the receiving terminal.
  • resource set 1 eg SL resource pool, BWP, Carrier # 0
  • resource set 2 eg SL resource pool, BWP, Carrier # 1).
  • 710-5 and 710-6) may be simultaneously transmitted to the receiving terminal.
  • a set of resources for which PSCFH transmission is performed may be indicated in the SCI for each data / SA 710-3 and 710-4.
  • the feedback information for each data / SA 710-3 and 710-4 is a specific resource in each resource set in which data / SA is transmitted based on the SCI indication, and each PSFCH 720-3 , 720-4), and is not limited to the above-described embodiment.
  • a case in which a plurality of resource sets are set based on one unicast session to two terminals may be considered.
  • a case in which a plurality of resource sets are set based on a plurality of unicast sessions may be considered.
  • a case in which a plurality of resource sets are set based on unicast and groupcast sessions on two terminals may be considered.
  • the SCI may further include a bit of whether the PSFCH is indicated through the resource set of the corresponding session.
  • the corresponding bit is a value of “0”
  • the PSFCH can be transmitted through one resource set of the corresponding session, and is based on a specific sidelink resource index determined during the session or a sidelink resource index for which current data / SA transmission is received.
  • the PSFCH can be transmitted on a specific resource in the above-described resource set.
  • the feedback transmission may be set or directed to be transmitted by being limited to a specific session.
  • one or a part of sidelink resources eg resource pool
  • BWP specific groupcast session
  • the specific groupcast may be determined in advance at the time of session establishment or may be indicated through RRC signaling of the base station, DCI signaling or SCI signaling of the terminal.
  • the receiving terminal may perform feedback transmission through a session for transmitting the indicated feedback and a specific side link resource in the indicated session.
  • feedback transmission method performed mainly between one or more sessions established in the same terminals or groups can be mainly considered. have.
  • a resource through which the PSFCH is transmitted may be indicated as a specific resource during a session establishment process. For example, when two terminals establish a unicast session based on a plurality of resource sets, the resource through which the PSFCH is transmitted may be indicated in the process of establishing the unicast session. That is, after the session is established, the resource through which the PSFCH is transmitted may be fixed as a specific resource.
  • a resource through which PSFCH is transmitted may be indicated based on a dynamic manner through SCI.
  • 1-bit SCI may be defined.
  • the resource on which the PSFCH is transmitted may be determined based on the SL resource index at which the current data transmission is received.
  • the resource on which the PSFCH is transmitted may be determined based on a specific SL resource index determined by the associated terminals during the establishment of a unicast or groupcast session. That is, the transmitting terminal can dynamically indicate the resource on which the PSFCH is transmitted in consideration of the channel environment.
  • the resource through which the PSFCH is transmitted may be indicated based on another method. More specifically, a plurality of resources set in the corresponding session may be indicated through SCI. As an example, a case where the SCI is 2 bits may be considered.
  • the SCI is the first value (e.g. '00')
  • the resource on which the PSFCH is transmitted may be determined based on the SL resource index at which the current data transmission used in the corresponding session is received.
  • the SCI is the second value (e.g. '01')
  • the resource on which the PSFCH is transmitted may be determined based on the first sidelink resource index used in the corresponding session.
  • the SCI is the third value (e.g.
  • the resource on which the PSFCH is transmitted may be determined based on the second sidelink resource index used in the corresponding session.
  • the SCI is the fourth value (e.g. '00')
  • the resource on which the PSFCH is transmitted may be determined based on the third sidelink resource index used in the corresponding session.
  • the SCI bit may not be limited to the above.
  • the number of SCI bits may be larger considering the number of sidelink resources, and is not limited to the above-described embodiment.
  • the terminals are assigned a specific sidelink resource indicated through the PSFCH transmission presence indicator in the SCI field provided in the PSCCH.
  • PSFCH transmission can be performed.
  • UEs may not perform PSFCH transmission on a sidelink resource that is not indicated through the PSFCH transmission presence indicator in the SCI field provided in the PSCCH. Therefore, the receiving terminal can utilize the resource for other sidelink transmissions.
  • information related to a session may be exchanged between associated terminals during the establishment of a unicast and / or groupcast session.
  • sidelink resource set e.g. resource pool / BWP / carrier
  • sidelink resource set e.g. resource pool / BWP / carrier
  • a case where a plurality of carriers exist as a resource set, or when a plurality of resource pools exist for each carrier, or when a plurality of BWPs are set may be considered.
  • Table 12 below is a diagram showing an example of PSFCH transmission switching based on FIG. 8.
  • Table 12 is only one example for convenience of description, and is not limited to the following examples.
  • UE 1 and UE 2 may perform data / SA transmission on SL carrier # 0 and SL carrier # 1.
  • PSFCH transmission and reception may be performed on SL carrier # 0.
  • the plurality of resource sets may be SL carrier # 0 and SL carrier # 1
  • the specific resource set for PSFCH transmission and reception may be SL carrier # 0.
  • UE 3 and UE 4 may perform data / SA transmission on SL carrier # 0 and SL carrier # 1.
  • PSFCH transmission and reception may be performed on SL carrier # 1.
  • the plurality of resource sets may be SL carrier # 0 and SL carrier # 1
  • the specific resource set for PSFCH transmission and reception may be SL carrier # 1.
  • a terminal transmitting data / SA may indicate a sidelink resource for PSFCH transmission to a data / SA receiving terminal through a sidelink resource indicator for PSFCH transmission.
  • the sidelink resource indicator does not indicate the exact resource on which the PSFCH transmission is performed, but may indicate the sidelink resource set in which the sidelink resource on which the PSFCH transmission is possible exists. That is, a specific resource set for PSFCH transmission may be indicated. Accordingly, PSFCH transmission may be performed through a specific sidelink resource determined in a corresponding sidelink carrier after a specific sidelink carrier is indicated as a specific resource set.
  • UE 1 and UE 2 can perform data / SA transmission through Resource pool # 0 and Resource pool # 1 in SL carrier # 0, respectively.
  • PSFCH transmission and reception can be performed in Resource pool # 0.
  • the plurality of resource sets may be Resource pool # 0 and Resource pool # 1
  • the specific resource set for PSFCH transmission and reception may be Resource pool # 0.
  • UE 3 and UE 4 can perform data / SA transmission in Resource pool # 0 and Resource pool # 1 in SL carrier # 0.
  • PSFCH transmission and reception can be performed in Resource pool # 0.
  • a plurality of resource sets may be Resource pool # 0 and Resource pool # 1, and a specific resource set for PSCH transmission and reception may be Resource pool # 0. That is, compared to Table 12, a plurality of resource sets may be in units of resource pools. At this time, the set of resources through which the PSFCH is transmitted may also be in resource pool units.
  • a terminal transmitting data / SA may indicate a sidelink resource for PSFCH transmission to a data / SA receiving terminal through a sidelink resource indicator for PSFCH transmission.
  • the sidelink resource indicator does not indicate the exact resource on which the PSFCH transmission is performed, but may indicate the sidelink resource set in which the sidelink resource on which the PSFCH transmission is possible exists. That is, a specific resource set for PSFCH transmission may be indicated. Accordingly, PSFCH transmission may be performed through a specific sidelink resource determined in a corresponding sidelink resource pool after a specific resource pool is indicated as a specific resource set.
  • the sidelink resource performing PSFCH transmission and reception (PSFCH Tx / Rx SL) based on the above may be determined for each unicast and / or groupcast session, and the method 1 or method 2 in Table 14 It can be determined on the basis of.
  • a resource for PSFCH transmission in a resource set for PSFCH transmission may be determined during session establishment. That is, a resource for PSFCH transmission may be determined based on a semi-static method.
  • a terminal transmitting data / SA may indicate PSFCH transmission on a specific sidelink resource (e.g. SL resource pool / BWP / carrier) through an SCI field among possible sidelink resource sets. That is, only a set of resources for PSFCH transmission is determined, and specific resources for PSFCH transmission may be indicated in a dynamic manner through SCI.
  • a specific sidelink resource e.g. SL resource pool / BWP / carrier
  • a set of resources usable in each unicast may be set as shown in Tables 12 and 13 described above. Thereafter, when the transmitting terminal transmits data / SA, the transmitting terminal may indicate a specific resource within a set of resources available through SCI.
  • the operations related to Table 14 described above may be performed in the same numerology (i.e. SCS and CP length).
  • the terminal when performing sidelink transmission / reception within one carrier (or a specific carrier), the terminal may be difficult to implement when considering different pneumatics in performing transmission / reception operations within the carrier. Therefore, when performing the operation shown in Table 14 on a specific carrier, only the same pneumatic roller can be considered.
  • it may be easy to implement even if different numerology is applied, and may be applicable, and will be described later with respect to different numerology.
  • the SCI field may further include a PSFCH presence indicator (PSFCH presence indicator).
  • the indicator on whether to transmit the PSFCH may provide information on whether to transmit the PSFCH to the terminal receiving the data / SA.
  • the transmitting terminal may transmit data / SA 810-2 from SL carrier # 1 to the receiving terminal based on unicast # 0.
  • the SCI field included in the data / SA 810-2 may include an indicator as to whether to transmit the PSFCH.
  • an indicator of whether the PSFCH is transmitted may indicate this. Through this, the receiving terminal can check whether the PSFCH is transmitted in the resource area for data.
  • the receiving terminal can know whether the PSFCH is transmitted through an indicator of whether the PSFCH is transmitted, and according to whether the PSFCH is transmitted, the OFDM symbol used by the PSFCH in the resource area for data / SA may be further utilized.
  • the SCI can indicate not only the sidelink resource set indication, but also the PSFCH presence indication in the same slot, thereby improving resource use efficiency.
  • data / SAs 810-1 and 810-2 for Unicast # 0 may be transmitted in SL carrier # 0 and SL carrier # 1, respectively.
  • PSFCH for Unicast # 0 (840-1) may be transmitted on SL carrier # 0. That is, a plurality of resource sets through which data / SA is transmitted is SL carrier # 0 and SL carrier # 1, and a specific resource set through which PSFCH is transmitted may be SL carrier # 0.
  • data / SA for Unicast # 1 (820-1, 820-2) may be transmitted on SL carrier # 0 and SL carrier # 1, respectively.
  • PSFCH for Unicast # 1 (840-2) can be transmitted on SL carrier # 1.
  • a plurality of resource sets through which data / SA is transmitted may be SL carrier # 0 and SL carrier # 1, and a specific resource set through which PSFCH is transmitted may be SL carrier # 1.
  • PSFCH 840-3 may be transmitted in the OFDM symbol after data / SA 810-2 transmitted in the same slot in SL carrier # 1 among data / SA for Unicast # 1.
  • the SCI field of the data / SA 810-2 includes an indicator as to whether or not the PSFCH is transmitted, and may indicate whether the PSFCH 840-3 is present. That is, whether or not the PSFCH 840-3 is received may be indicated through an indicator of whether the SCI transmits the PSFCH, as described above.
  • the base station may control the sidelink resource to be utilized. Accordingly, the base station can recognize in advance whether PSFCH is transmitted or received by the terminals in a slot in which sidelink data / SA transmission / reception is used between specific terminals. At this time, as an example, when the transmission of two channels is multiplexed in one slot and transmitted, the base station may instruct the data / SA transmitting terminal whether DCS is present or not in the scheduled slot through the DCI signaling. have. At this time, the transmitting terminal may provide information received through DCI signaling to the receiving terminal through the SCI field for the receiving terminal. Through this, the receiving terminal can check the area of the resource through which the sidelink data / SA is transmitted.
  • FIGS. 9 and 10 are diagrams illustrating a timing determination method for PSFCH transmission based on different neurology.
  • implementation may be easy even when different pneumatics are applied to a plurality of carriers.
  • the number of sidelink carriers to which data is transmitted and received by related terminals may be determined in advance.
  • the number of sidelink carriers to which the terminals associated with the session will perform HARQ feedback transmission may also be determined in advance.
  • at least one or more of the number of sidelink carriers to perform data transmission and reception and the number of sidelink carriers to perform HARQ feedback transmission may be set in advance or set to respective terminals by a network. , It is not limited to the above-described embodiment.
  • UE 1 and UE 2 may perform V2X sidelink communication (e.g. unicast / groupcast) on a plurality of carriers (multi-carrier).
  • V2X sidelink communication e.g. unicast / groupcast
  • two or more terminals may perform data transmission and reception based on unicast and / or groupcast on five sidelink carriers.
  • this is only one example and is not limited to the above-described embodiment. That is, two terminals can perform data transmission and reception through a plurality of sidelink carriers.
  • a terminal transmitting data may transmit PSCCH / PSSCH at different timings in each carrier. That is, the timing of PSCCH / PSSCH transmission in each carrier may be different.
  • the HARQ feedback timing for PSCCH / PSSCH transmitted at different timings in each carrier is the same and can be performed on a specific carrier.
  • HARQ feedback may be set to be transmitted only on a specific carrier.
  • HARQ-feedback transmission may be performed only on a specific carrier based on network configuration or preset information.
  • HARQ feedback transmission can be performed only on a specific carrier.
  • a case in which HARQ feedback transmission is performed on the PSSCH received from SL carriers # 0 to 4 in SL carrier # 0 may be considered.
  • the transmitting terminal can perform each PSCCH / PSSCH transmission through five carriers.
  • the receiving terminal can transmit all of the corresponding HARQ feedback information for each carrier on a specific set SL carrier (i.e. SL carrier # 0).
  • PSCCH / PSSCHs indicating PSFCH transmission have the same slot timing (ie Slot k). It does not receive at, but can be decided to perform feedback transmission at the same timing.
  • PSFCH transmission may be performed based on PSFCH resource indicator information of the last received PSCCH / PSSCH on the time domain among PSCCH / PSSCHs associated with PSFCH transmission. That is, PSFCH transmission may be performed based on PSFCH resource indicator information provided by the latest (or latest) PSCCH / PSSCH among PSCCH / PSSCHs indicating PSFCH transmission.
  • sidelink resource sets having different neurology may be set.
  • the feedback channel timing may be determined in consideration of sidelink resource sets having different numerology.
  • the length of the slot may be different. More specifically, referring to Table 15 below, the number of slots included in 10 ms may be different based on the neuromerology. For example, if the SCS is 30Khz, the number of slots included in 10ms may be twice the number of slots included in 10ms when the SCS is 15Khz. That is, based on the same time interval, one slot when the SCS is 15Khz may correspond to two slots when the SCS is 30Khz.
  • the number of slots included in the same time interval may be different based on the neuromerology.
  • the feedback channel timing may be determined.
  • a feedback channel may be determined based on HARQ timing indicated (or determined) based on a slot in which a data channel is transmitted and a slot in which an overlapping feedback channel is transmitted.
  • the feedback information when the PSCCH / PSSCH is transmitted in one slot 910-1 in a carrier with SCS of 60Khz, the feedback information will be transmitted in the next slot 920-1 based on the slot in a carrier with SCS of 30Khz.
  • the feedback information may be transmitted in a slot next to a slot in the case where the SCS is 30Khz corresponding to two slots when the SCS is 60Khz, and may be a slot corresponding to “920-2” in FIG. 9 (a).
  • a case where a PSCCH / PSSCH is transmitted in a plurality of slots 910-1 in a carrier of 60Khz may be considered.
  • PSCCH / PSSCH can be transmitted in one slot as well as a case in which a plurality of slots 910-1 are transmitted.
  • PSCCH / PSSCH may be transmitted in 60Khz SCS slots (two e.g.) corresponding to one slot of 30Khz SCS.
  • PSCCH / PSSCH may be transmitted in 60Khz SCS slots (4 e.g. 4) corresponding to one 15Khz SCS slot.
  • the feedback information is based on a slot in a carrier with an SCS of 30Khz in the next slot 920-1.
  • the feedback information may be transmitted in a slot next to a slot when the SCS corresponding to the two slots 910-1 when the SCS is 60Khz is 30Khz, and to “920-1” in FIG. 9 (a). It may be a corresponding slot.
  • the PSCCH / PSSCH is transmitted on a carrier having an SCS of 60Khz, and the feedback information is transmitted on a carrier of 15Khz, the same may be applied as described above.
  • four slots of the carrier of 60Khz may correspond to one slot of the carrier of 15Khz, and feedback information may be transmitted based on the same method.
  • the feedback timing may be equally applied when k> 1, and is not limited to the above-described embodiment.
  • the feedback information for the PSCCH / PSSCH in a carrier with an SCS of 15Khz can be applied in the same way when the SCS is transmitted in a carrier with an SCS of 60Khz, and at this time, the last slot (920-4) among slots of a carrier with an SCS of 60KhZ. In the feedback information may be transmitted.
  • the SCS values are the same, it may be performed with the same slot timing analysis for the feedback channel transmission timing.
  • the PSCCH / PSSCH is transmitted in one slot 910-5 in a carrier with SCS of 30Khz
  • the same SCS Invar feedback information may be transmitted in the next slot 920-5.
  • PSCCH / PSSCH is transmitted in each slot, feedback information may be transmitted in the next slot in the same manner, as described above.
  • FIG. 10 it may be a method of performing feedback transmission when PSCCH / PSSCH is transmitted on a plurality of carriers.
  • SL carrier # 0 may be a 60 kHz SCS
  • SL carrier # 1 may have a 30 kHz SCS.
  • the determined meaning may mean that feedback transmission is always performed in a specific slot after a slot that receives data without signaling, and is not limited to the above-described embodiment.
  • SL carrier # 1 is based on a 30kHz SCS
  • Feedback eg HARQ-ACK
  • the feedback may include other feedback information (e.g. CSI) as well as HARQ-ACK information, and is not limited to the above-described embodiment.
  • the feedback transmission may be set or indicated in the slot 1020-1 in the SL carrier # 0.
  • the feedback transmission timing may be set or indicated in slot y + 1 (10 30) in SL carrier # 1.
  • both of the feedback transmissions for the two SL carriers may need to be performed in slot k + 1 (1020-1) of SL carrier # 0.
  • the feedback information may be set or directed to be transmitted only in SL carrier # 0, and based on this, the feedback information may be transmitted in slot k + 1 (1020-1).
  • SL carrier # 0 may have a 60 kHz SCS
  • SL carrier # 1 may have a 15 kHz SCS.
  • the determined meaning may mean that feedback transmission is always performed in a specific slot after a slot that receives data without signaling, and is not limited to the above-described embodiment.
  • the feedback may include other feedback information (e.g. CSI) as well as HARQ-ACK information, and is not limited to the above-described embodiment.
  • CSI which is another feedback information
  • the feedback transmission is set or indicated in the slot 1010-3 of SL carrier # 0 in FIG. 10 (b), and the feedback in slot y + 1 (1040) in the SL carrier # 1 likewise.
  • both of the feedback transmissions for the two SL carriers can be performed in slot k + 1 (1020-2) of SL carrier # 0.
  • the feedback transmission for SL carrier # 0 is SL It can be performed as it is in the slot 1010-3 of carrier # 0.
  • the feedback transmission timing is set or indicated only in the SL carrier # 1 slot y + 1 1040, the feedback transmission is the SL carrier # corresponding to the SL carrier # 1 slot y + 1 1040 in the time domain.
  • feedback information may be set or directed to be transmitted only in SL carrier # 0 based on the above, and based on this, feedback information may be transmitted in slot k + 1 (1020-2). .
  • FIG. 11 is a diagram showing a method of transmitting a PSFCH based on a plurality of resource sets.
  • At least two UEs may establish a unicast and / or groupcast session.
  • S1110 At this time, as an example, as described in FIGS. 1 to 10, the UE is based on a discovery procedure. They can recognize the surrounding terminals and establish a session. At this time, it may be considered whether a plurality of resource sets are set based on sessions established in at least two terminals.
  • S1120 At this time, for example, unicast is a terminal corresponding to a source ID and a terminal corresponding to a destination ID. Can be involved in this session. Also, in the case of a group cast, two or more terminals may be associated with one session based on the destination ID.
  • the resource set may be at least one of a carrier, a BWP, and a resource pool, as described above. Or, as an example, the resource set may be set based on a combination of carrier, BWP and resource pool, and is not limited to the above-described embodiment.
  • the transmitting terminal of the two terminals may transmit each data / SA through each set of resources.
  • the receiving terminal of the two terminals receives data / SA received from the respective resource sets.
  • Each of the feedback information for can be transmitted to the transmitting terminal through one set of resources.
  • the resource set may be determined by the network or may be determined in advance.
  • one resource set to which feedback information is transmitted may be indicated to a data receiving terminal to perform feedback transmission through a DCI field by a base station and / or an SCI field of a data transmission terminal.
  • the PSFCH may be transmitted through a specific physical resource in one specific resource set through which feedback information is transmitted, as described above.
  • the PSFCH transmission presence indicator in the SCI field may indicate whether PSFCH transmission is performed on a specific sidelink resource (e.g. slot). That is, whether PSFCH is transmitted on each resource may also be indicated through SCI, and is not limited to the above-described embodiment. That is, as an embodiment from the viewpoint of the data transmission terminal, not only is indicated through the SCI field to use a specific resource set among the plurality of resource sets for data transmission for feedback transmission, but also feedback within the same slot resource where data transmission is performed Information on whether a transmission is present may also be indicated through the SCI field.
  • a specific sidelink resource e.g. slot
  • the transmitting terminal of the two terminals may transmit data / SA through one set of resources.
  • the receiving terminal may transmit feedback information on the received data / SA to the transmitting terminal through a corresponding resource set, as described above.
  • FIG. 12 is a diagram showing a method of transmitting a PSFCH based on a plurality of carriers.
  • At least two terminals may establish a unicast and / or groupcast session. (S1210) At this time, as described above, the terminal corresponding to the source ID and the terminal corresponding to the destination ID are associated with the session. Can be. Also, in the case of a group cast, two or more terminals may be associated with one session based on the destination ID. Considering the above-described situation, a case in which a plurality of resource sets are set in a session established in at least two terminals may be considered. At this time, a plurality of carriers may be set in the two terminals. As an example, as described above, in the case of a plurality of carriers, different numerology may be applied.
  • the transmitting terminal may transmit each data / SA to the receiving terminal through a plurality of carriers.
  • the receiving terminal transmits feedback information for each data / SA to one carrier. Can be transmitted to the transmitting terminal.
  • the SCS of the carrier for which the feedback information is transmitted may be different from the SCS for which data / SA is transmitted. That is, different numerology may be applied to each carrier.
  • the SCS of the carrier transmitting the feedback information is larger than the SCS transmitted by the data / SA (S1240)
  • there are a plurality of slots capable of transmitting feedback information and feedback information may be transmitted through the last slot of the corresponding slot.
  • S1250 the number of slots included in the same time interval may be different based on different SCS. Therefore, the number of slots corresponding to the same time interval in each SCS may be different.
  • one slot in the case of 3OKhz SCS in the same time interval may correspond to two slots in the case of 60Khz SCS, as described above.
  • the SCS of a carrier transmitting feedback information when the SCS of a carrier transmitting feedback information is larger than the SCS transmitted by data / SA, a plurality of slots capable of transmitting feedback information may be provided. That is, the number of slots corresponding to the SCS transmitting the feedback information may be more than the number of slots corresponding to the SCS transmitted by the data / SA in the same time period. Therefore, there may be a plurality of slots through which feedback information can be transmitted.
  • the slot in which the feedback information is transmitted may be the last slot among the corresponding slots. (S1250)
  • the slot in which the feedback information is transmitted to prevent resource collision is the corresponding slot. It can be decided as the last slot.
  • the information on the slot through which the feedback information is transmitted may be indicated through the SCI. That is, a specific slot among slots capable of transmitting feedback information may be indicated through SCI, and feedback information may be transmitted from the corresponding slot.
  • the SCS of the carrier transmitting the feedback information when the SCS of the carrier transmitting the feedback information is not larger than the SCS transmitted by the data / SA (S1240), there is only one slot in which the feedback information can be transmitted, and the feedback information can be transmitted in the corresponding slot. (S1260)
  • the feedback information may be transmitted in a corresponding slot indicated by the same slot structure.
  • the SCS of the carrier transmitting the feedback information is small, the SCS transmitted by the data / SA corresponds to the SCS transmitting the feedback information than the number of slots corresponding to the SCS transmitted by the data / SA in the same time interval. There may be fewer slots to play. Therefore, one slot capable of transmitting feedback information may be one. At this time, the feedback information may be transmitted through the corresponding slot, as described above in FIGS. 9 and 10.
  • FIG. 13 is a view showing a base station apparatus and a terminal apparatus.
  • the base station apparatus 1300 may include a processor 1320, an antenna unit 1312, a transceiver 1314, and a memory 1316.
  • the processor 1320 performs baseband-related signal processing, and may include an upper layer processor 1330 and a physical layer processor 1340.
  • the upper layer processing unit 1330 may process operations of a medium access control (MAC) layer, a radio resource control (RRC) layer, or more.
  • the physical layer processor 1340 may process operations of a physical (PHY) layer (eg, uplink reception signal processing and downlink transmission signal processing).
  • the processor 1320 may control overall operation of the base station apparatus 1300.
  • the antenna unit 1312 may include one or more physical antennas, and if a plurality of antennas are included, the antenna unit 1312 may support multiple input / output (MIMO) transmission and reception.
  • the transceiver 1314 may include a radio frequency (RF) transmitter and an RF receiver.
  • the memory 1316 may store information processed by the processor 1320, software related to the operation of the base station apparatus 1300, an operating system, and applications, and may include components such as a buffer.
  • the processor 1320 of the base station 1300 may be set to implement the operation of the base station in the embodiments described in the present invention.
  • the terminal device 1350 may include a processor 1370, an antenna unit 1362, a transceiver 1362, and a memory 1366.
  • the processor 1370 performs baseband-related signal processing, and may include an upper layer processing unit 1380 and a physical layer processing unit 1362.
  • the upper layer processor 1380 may process operations of the MAC layer, the RRC layer, or higher layers.
  • the physical layer processor 1390 may process operations of the PHY layer (eg, downlink reception signal processing and uplink transmission signal processing).
  • the processor 1370 may control overall operation of the terminal device 1350.
  • the antenna unit 1362 may include one or more physical antennas, and if a plurality of antennas are included, MIMO transmission and reception may be supported.
  • the transceiver 1364 may include an RF transmitter and an RF receiver.
  • the memory 1366 may store information processed by the processor 1370, software related to an operation of the terminal device 1350, an operating system, an application, and may include components such as a buffer.
  • the processor 1370 of the terminal device 1350 may be set to implement the operation of the terminal in the embodiments described in the present invention.
  • the processor 1320 of the base station apparatus 1300 may collect location information of a plurality of terminals and initiate a discovery procedure for unicast / groupcast. Further, as an example, the processor 1320 of the base station apparatus 1300 may provide information on session establishment to the terminal apparatus 1350. In addition, the processor 1320 of the base station apparatus 1300 may provide information on a specific resource to which feedback information is transmitted among a plurality of resource sets to the terminal apparatus 1350. In addition, as an example, the processor 1320 of the base station apparatus 1300 may provide control information for a plurality of resource sets to the terminal apparatus 1350.
  • the processor 1370 of the terminal device 1350 may perform side link communication with another terminal device.
  • the processor 1370 of the terminal device 1350 may establish a groupcast and / or unicast session with another terminal device 1350.
  • the processor 1370 of the terminal device 1350 may perform data communication with another terminal device 1350 through a plurality of resource sets based on the established session.
  • the processor 1370 of the terminal device 1350 may provide resource information to which feedback information for a plurality of resource sets is transmitted to other terminal devices.
  • the processor 1370 of the terminal device 1350 may provide information on a slot through which the PSFCH is transmitted to other terminal devices.
  • the processor 1370 of the terminal device 1350 may transmit control information for sidelink data to another terminal device through the PSCCH.
  • the processor 1370 of the terminal device 1350 may transmit data information on sidelink data to another terminal device through the PSSCH.
  • the processor 1370 of the terminal device 1350 may transmit feedback information to another terminal device based on the received sidelink data.
  • various embodiments of the present disclosure may be implemented by hardware, firmware, software, or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs Field Programmable Gate Arrays
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs Field Programmable Gate Arrays
  • Universal It can be implemented by a processor (general processor), a controller, a microcontroller, a microprocessor.
  • the scope of the present disclosure includes software or machine-executable instructions (eg, operating systems, applications, firmware, programs, etc.) that cause actions according to the methods of various embodiments to be executed on a device or computer, and such software or Instructions include a non-transitory computer-readable medium that is stored and executable on a device or computer.
  • software or Instructions include a non-transitory computer-readable medium that is stored and executable on a device or computer.
  • the present invention can be applied to a Sidelink feedback procedure in a NR (New Radio) Vehicle To Everything (V2X) system, and can be applied when transmitting and receiving sidelink feedback information in an NR V2X system.
  • V2X New Radio
  • V2X Vehicle To Everything

Landscapes

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

Abstract

La présente invention concerne un procédé par lequel un terminal peut transmettre des informations de rétroaction dans un système V2X NR. Selon l'invention, le procédé de transmission d'informations de rétroaction peut comprendre : une étape pour qu'un premier terminal établisse une session avec un second terminal sur la base d'au moins un élément parmi une diffusion individuelle et une diffusion de groupe ; une étape pour que le premier terminal transmette des données au second terminal par l'intermédiaire d'un ensemble de ressources sur la base de la session établie ; et une étape pour que le premier terminal reçoive des informations de rétroaction en provenance du second terminal sur la base des données. Selon l'invention, lorsqu'une pluralité d'ensembles de ressources sont définis dans le premier terminal et le second terminal, le second terminal peut transmettre les informations de rétroaction concernant des données sur la pluralité d'ensembles de ressources au premier terminal par l'intermédiaire d'un ensemble de ressources spécifique.
PCT/KR2019/014678 2018-11-09 2019-11-01 Procédé de réalisation d'une procédure de rétroaction de liaison latérale dans un système v2x nr et dispositif associé WO2020096280A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180137678A KR20200054034A (ko) 2018-11-09 2018-11-09 Nr v2x 시스템에서 사이드링크 피드백 절차 수행 방법 및 그 장치
KR10-2018-0137678 2018-11-09

Publications (1)

Publication Number Publication Date
WO2020096280A1 true WO2020096280A1 (fr) 2020-05-14

Family

ID=70611934

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/014678 WO2020096280A1 (fr) 2018-11-09 2019-11-01 Procédé de réalisation d'une procédure de rétroaction de liaison latérale dans un système v2x nr et dispositif associé

Country Status (2)

Country Link
KR (1) KR20200054034A (fr)
WO (1) WO2020096280A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023088480A1 (fr) * 2021-11-22 2023-05-25 维沃移动通信有限公司 Procédé de détermination de ressource de liaison latérale et terminal

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022222106A1 (fr) * 2021-04-22 2022-10-27 Oppo广东移动通信有限公司 Procédé de transmission de canal physique de rétroaction de liaison latérale (psfch) et dispositif terminal
WO2023132082A1 (fr) * 2022-01-07 2023-07-13 株式会社Ｎｔｔドコモ Terminal et procédé de communication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140135161A (ko) * 2012-01-30 2014-11-25 엘지전자 주식회사 D2d 통신을 지원하는 무선통신 시스템에서 d2d 전송 데이터에 대한 피드백 정보를 전송 및 수신하는 방법과 이를 위한 장치
WO2018064179A1 (fr) * 2016-09-30 2018-04-05 Intel Corporation Services v2x dans des réseaux cellulaires de prochaine génération
KR20180072592A (ko) * 2015-10-22 2018-06-29 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 피드백 정보를 전송하는 방법, 단말기 및 기지국
KR20180109849A (ko) * 2016-02-05 2018-10-08 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 엔드 투 엔드 데이터 전송 방법, 기기 및 시스템
WO2018203669A1 (fr) * 2017-05-01 2018-11-08 엘지전자 주식회사 Procédé d'exploitation d2d d'un terminal dans un système de communication sans fil et terminal utilisant ledit procédé

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140135161A (ko) * 2012-01-30 2014-11-25 엘지전자 주식회사 D2d 통신을 지원하는 무선통신 시스템에서 d2d 전송 데이터에 대한 피드백 정보를 전송 및 수신하는 방법과 이를 위한 장치
KR20180072592A (ko) * 2015-10-22 2018-06-29 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 피드백 정보를 전송하는 방법, 단말기 및 기지국
KR20180109849A (ko) * 2016-02-05 2018-10-08 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 엔드 투 엔드 데이터 전송 방법, 기기 및 시스템
WO2018064179A1 (fr) * 2016-09-30 2018-04-05 Intel Corporation Services v2x dans des réseaux cellulaires de prochaine génération
WO2018203669A1 (fr) * 2017-05-01 2018-11-08 엘지전자 주식회사 Procédé d'exploitation d2d d'un terminal dans un système de communication sans fil et terminal utilisant ledit procédé

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023088480A1 (fr) * 2021-11-22 2023-05-25 维沃移动通信有限公司 Procédé de détermination de ressource de liaison latérale et terminal

Also Published As

Publication number Publication date
KR20200054034A (ko) 2020-05-19

Similar Documents

Publication Publication Date Title
WO2021034033A1 (fr) Procédé et appareil pour utiliser une requête automatique de répétition hybride (harq) dans des communications sans fil
WO2021025476A1 (fr) Procédé et appareil de détermination de temporisation de harq dans des systèmes de communication
WO2020091492A1 (fr) Procédé pour effectuer une procédure de rétroaction harq dans un système v2x nr, et dispositif pour ce dernier
WO2019182341A1 (fr) Procédé de détermination d'un faisceau de transmission dans un système de communication sans fil prenant en charge une liaison parallèle, et terminal associé
WO2017003156A1 (fr) Procédé de transmission ou de réception de signaux d2d dans un système de communication sans fil, et son appareil
WO2016163847A1 (fr) Procédé d'émission ou de réception de signal de référence de sondage dans un système de communication sans fil et appareil associé
WO2021033945A1 (fr) Procédé de configuration de ressource de liaison latérale dans un système de communication
WO2020036455A1 (fr) Procédé de transmission ou de réception de signal de synchronisation dans un système v2x nr, et appareil associé
WO2016186385A1 (fr) Appareil et procédé pour un accès aléatoire dans un système de communication sans fil
WO2020096280A1 (fr) Procédé de réalisation d'une procédure de rétroaction de liaison latérale dans un système v2x nr et dispositif associé
WO2017183899A2 (fr) Procédé et dispositif de réception de services par l'intermédiaire de différents systèmes de communication sans fil
WO2022086251A1 (fr) Procédé et dispositif de sélection de ressource dans un système de communication sans fil
WO2020263019A1 (fr) Procédé de transmission de rétroaction harq de liaison latérale et appareil correspondant
WO2020145662A1 (fr) Procédé et appareil de configuration de dmrs dans un système de communication sans fil
WO2020111816A1 (fr) Procédé et appareil pour réaliser une communication dans un système de communication sans fil
WO2022035000A1 (fr) Procédé d'émission et de réception de données dans un système de communication sans fil prenant en charge une communication en duplex intégral et appareil associé
WO2020145633A1 (fr) Procédé et dispositif d'attribution de puissance d'émission dans un système de communications sans fil
WO2020091493A1 (fr) Procédé et dispositif de configuration de groupe de ressources destinés à une liaison latérale dans un système nr
WO2022211572A1 (fr) Procédé et dispositif de transmission de signal dans un système de communication sans fil
WO2020145666A1 (fr) Procédé et dispositif pour déterminer une id de session de couche physique de liaison latérale dans un système de communication sans fil
WO2020166910A1 (fr) Procédé de commande de communication en liaison latérale, et dispositif associé
WO2018056696A1 (fr) Procédé de transmission et de réception de données dans un système de communication sans fil et dispositif associé
WO2023204659A1 (fr) Procédé pour recevoir un signal de référence de démodulation dans un système de communication sans fil et appareil associé
WO2023211043A1 (fr) Procédé et dispositif pour augmenter des ressources de commande de liaison montante dans un système de communications sans fil
WO2024071863A1 (fr) Procédé et dispositif d'émission et de réception de signal de référence de sondage dans un système de communication sans fil

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: 19881636

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19881636

Country of ref document: EP

Kind code of ref document: A1