Method and apparatus for resource configuration of sidelink in vehicle-to-everything network

Abstract

The application provides a resource configuration method and device for a sidelink in a vehicle networking, wherein the method comprises: a terminal receiving sidelink BWP / resource pool configuration information; and the terminal performing sidelink data transmission according to the received sidelink BWP / resource pool configuration information. Through the application, the problem of vehicle networking communication based on a 5G sidelink is solved in the related art.

Description

[0001] This application is a divisional application of Chinese patent application No. 201810912172.4, filed on August 10, 2018, entitled “Resource Allocation Method and Apparatus for Straight-Through Link in Vehicle Networking”. Technical Field

[0002] This invention relates to the field of communications, and more specifically, to a method and apparatus for resource allocation of direct links in vehicle-to-everything (V2X) networks. Background Technology

[0003] Vehicle-to-everything (V2X) communication refers to a large-scale network system that enables wireless communication and information exchange between vehicles, pedestrians, roadside equipment, and the internet, according to agreed-upon communication protocols and data exchange standards. V2X communication can improve driving safety, traffic efficiency, and access to convenient or entertaining information. Classified by the objects of wireless communication, V2X communication includes three different types: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure / V2N (V2I / V2N) communication, and vehicle-to-pedestrian (V2P) communication, collectively referred to as V2X communication.

[0004] In the V2X communication research organized by 3GPP (3rd Generation Partnership Project) based on Long Term Evolution (LTE), the V2X communication method based on direct / sidelink between User Equipment (UE) is one of the ways to implement the V2X standard. That is, the service data is transmitted directly from the source UE to the target UE through the air interface without being forwarded by the base station and the core network. This V2X communication method is referred to as PC5-based V2X communication or V2X Sidelink communication.

[0005] With technological advancements and the development of the automation industry, V2X communication scenarios are expanding and demanding higher performance. Advanced V2X services are mainly divided into four categories: vehicle platooning, extended sensors, advanced driving (semi-automated or fully-automated driving), and remote driving. Required performance includes: packet size support of 50 to 12,000 bytes, transmission rate of 2 to 50 messages per second, maximum end-to-end latency of 3-500 milliseconds, reliability of 90%-99.999%, data rate of 0.5-1000 Mbps, and transmission range of 50-1000 meters. 3GPP has initiated research on vehicle-to-everything (V2X) communication based on 5G technology, but V2X communication based on 5G air interfaces and 5G sidelinks is currently lacking.

[0006] There is currently no effective solution to the aforementioned problems in the relevant technologies. Summary of the Invention

[0007] This invention provides a resource allocation method and apparatus for direct links in vehicle-to-everything (V2X) networks, at least addressing the issue that V2X communication based on 5G direct links (Sidelink) does not yet exist in related technologies.

[0008] According to an embodiment of the present invention, a resource configuration method for a direct link in a vehicle network is provided, comprising: a terminal receiving direct link Sidelink BWP / resource pool configuration information; the terminal performing Sidelink data transmission according to the received Sidelink BWP / resource pool configuration information.

[0009] According to another embodiment of the present invention, a resource configuration device for a direct link in a vehicle network is provided, comprising: a first receiving module for receiving direct link Sidelink BWP / resource pool configuration information; and a transmission module for performing Sidelink data transmission according to the received Sidelink BWP / resource pool configuration information.

[0010] According to another embodiment of the present invention, a storage medium is also provided, wherein a computer program is stored in the storage medium, and the computer program is configured to execute the steps in the above-described embodiment of the resource allocation method for direct links in the Internet of Vehicles.

[0011] According to yet another embodiment of the present invention, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in the above-described embodiment of the resource allocation method for through links in the Internet of Vehicles.

[0012] Through this invention, the terminal can receive Sidelink BWP / resource pool configuration information and perform Sidelink data transmission according to the Sidelink BWP / resource pool configuration information, thereby realizing vehicle-to-everything (V2X) communication based on 5G direct link. This solves the problem that there is no vehicle-to-everything (V2X) communication based on 5G direct link Sidelink in related technologies and fills the gap in related technologies. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a hardware structure block diagram of the terminal of the resource allocation method for the direct link in the Internet of Vehicles according to an embodiment of the present invention;

[0015] Figure 2 This is a flowchart of a resource allocation method for a direct link in a vehicle network according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the Sidelink BWP according to an embodiment of the present invention;

[0017] Figure 4 A flowchart of the Sidelink BWP selection process for data packets or logical channels according to an embodiment of the present invention;

[0018] Figure 5 This is a flowchart illustrating a UE requesting Sidelink to send BWP configuration according to an embodiment of the present invention;

[0019] Figure 6 This is a flowchart of the Sidelink BWP selection process corresponding to a data packet or logical channel according to an embodiment of the present invention.

[0020] Figure 7 This is a flowchart illustrating a UE requesting a sidelink to receive BWP configuration according to an embodiment of the present invention.

[0021] Figure 8 This is a schematic diagram of the initial BWP and a regular BWP according to an embodiment of the present invention;

[0022] Figure 9This is a flowchart illustrating the negotiation between the Sidelink BWP and / or resource pool for unicast communication UEs regarding Sidelink data transmission, according to an embodiment of the present invention.

[0023] Figure 10 This is a flowchart of the Sidelink resource configuration of the UE receiving the base station according to an embodiment of the present invention;

[0024] Figure 11 This is a flowchart illustrating a UE requesting V2X Sidelink configuration information according to an embodiment of the present invention;

[0025] Figure 12 This is a schematic diagram of the resource allocation device for a direct link in a vehicle network according to an embodiment of the present invention. Detailed Implementation

[0026] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] Example 1

[0029] The method embodiment provided in Embodiment 1 of this application can be executed in a terminal, computer terminal, or similar computing device. Taking running on a terminal as an example, Figure 1 This is a hardware structure block diagram of the terminal for the resource allocation method of the direct link in the vehicle network according to an embodiment of the present invention. For example... Figure 1 As shown, terminal 10 may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. Optionally, the terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the terminal described above. For example, terminal 10 may also include components that are larger than those described above. Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0030] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the resource allocation method for the direct link in the vehicle network in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0031] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of terminal 10. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0032] This embodiment provides a resource configuration method for a direct link in a vehicle network running on the aforementioned terminal. Figure 2 This is a flowchart of a resource allocation method for a through link in a vehicle network according to an embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps:

[0033] Step S202: The terminal receives the Sidelink BWP / resource pool configuration information for the direct link;

[0034] Step S204: The terminal performs Sidelink data transmission according to the received Sidelink BWP / resource pool configuration information;

[0035] Through the above steps S102 and S204, the terminal can receive Sidelink BWP / resource pool configuration information and perform Sidelink data transmission according to the Sidelink BWP / resource pool configuration information, thereby realizing vehicle-to-everything (V2X) communication based on 5G direct link. This solves the problem that there is no vehicle-to-everything (V2X) communication based on 5G direct link Sidelink in related technologies and fills the gap in related technologies.

[0036] It should be noted that the Sidelink BWP configuration information involved in this embodiment includes at least one of the following: BWP index, BWP bandwidth, BWP location, subcarrier spacing, cyclic prefix, and one or more target identifier / PPPP / 5QI / QFI / PDB / priority information.

[0037] In addition, the SidelinkBWP configuration information also includes Sidelink BWP mapping information, indicating the mapping relationship between target identifier / PPPP / 5QI / QFI / PDB / priority information and subcarrier spacing.

[0038] In an optional embodiment of this example, the method by which the terminal performs Sidelink data transmission based on the received SidelinkBWP / resource pool configuration information in step S204 above can be: the terminal determines the Sidelink BWP and / or Sidelink resource pool for data transmission / reception based on the received SidelinkBWP configuration information.

[0039] In another optional embodiment of this example, before the terminal receives the Sidelink BWP configuration information, the method of this example may further include: the terminal sending request information to the base station;

[0040] The requested information includes at least one of the following: V2X relatedSI request; Sidelink synchronization, and / or Sidelink discovery, and / or Sidelink broadcast / multicast communication, and / or Sidelink unicast communication resource configuration request; LTE Sidelink resource configuration request; Interest indication for Sidelink discovery transmission and / or reception; Interest indication for Sidelink unicast communication transmission and / or reception; Interest indication for Sidelink multicast / broadcast communication transmission and / or reception; Sidelink unicast communication target identifier or Sidelink broadcast / multicast communication target identifier; PPPP / 5QI / QFI / PDB / priority / PER / GFBR / PBR / ARP; Subcarrier spacing information;

[0041] For each sidelink unicast communication target identifier, at least one of the following information is included: unicast peer UE identifier, peer UE geographic location and / or beam index / beam direction information.

[0042] In addition, Sidelink BWP / resource pool information includes at least one of the following: synchronous Sidelink BWP, broadcast Sidelink BWP / resource pool, multicast Sidelink BWP / resource pool, and unicast Sidelink BWP / resource pool.

[0043] In a preferred embodiment of this example, the Sidelink BWP / resource pool further includes an initial Sidelink BWP / resource pool; wherein the initial Sidelink BWP / resource pool is used for Sidelink unicast connection establishment and / or unicast data transmission resource configuration signaling to send or receive the corresponding sidelink BWP / resource pool.

[0044] The unicast data transmission resource configuration includes: the first terminal sending a Sidelink BWP and / or Sidelink resource pool carrying V2X service information to the second terminal; the first terminal receiving the acceptable V2X service information and / or the Sidelink BWP / resource pool configuration that supports sending and / or receiving sent by the second terminal.

[0045] In another optional embodiment of this invention, the method may further include:

[0046] Step S106: The terminal selects the corresponding Sidelink BWP / resource pool for data transmission based on the target identifier / PPPP / 5QI / QFI / PDB / priority information or available subcarrier interval information corresponding to the data packet / logical channel, and the Sidelink BWP configuration information; or,

[0047] Step S108: The terminal determines the Sidelink BWP / resource pool to listen to or receive based on the target identifier / PPPP / 5QI / QFI / PDB / priority information or subcarrier spacing information corresponding to the service it is interested in receiving; or,

[0048] Step S110, the terminal receives the activated SL BWP / resource pool index indicated by the base station via RRC signaling; or,

[0049] Step S112, the terminal receives the activated SL BWP / resource pool index indicated by the base station via DCI; or,

[0050] Step S114, the terminal receives the SL transmission and / or reception of BWP / resource pool information / index contained in the PC5 signaling; or,

[0051] Step S116, the terminal receives the SL BWP / resource pool index for activation / switching contained in the SCI; or,

[0052] In step S118, the terminal receives the inactivity timer configuration sent by the base station. When the inactivity timer times out, the terminal returns to the unicast initial Sidelink BWP / resource pool.

[0053] It should be noted that for unpaired spectrum, the Sidelink BWP reuses the same Uu BWP as paging and SI; and / or, for scenarios where Sidelink uses Uu interface UL resources, the same Sidelink BWP and UL BWP are configured, or the Sidelink BWP and UL BWP overlap in the frequency domain; and / or, for scenarios where Sidelink uses a dedicated PC5 carrier, the Sidelink BWP and Uu interface BWP are configured independently.

[0054] Preferably, the Sidelink resource pool configuration information involved in this embodiment includes at least one of the following: the time-frequency domain location of the Sidelink resource, the time-frequency domain location information of the SCI resource, the time-frequency domain location information of the data resource, the subcarrier spacing information, and unicast / multicast / broadcast indication.

[0055] The Sidelink resource pool configuration information includes at least one of the following:

[0056] Configuration information of the transmit and / or receive resource pools of the cell where the terminal is stationed or serving, configuration information of the transmit and / or receive resource pools of neighboring cells / neighboring frequency points, configuration information of the Sidelink transmit and / or receive resource pools corresponding to LTE and / or NR, configuration information of the Sidelink discovery transmit and / or receive resource pools, configuration information of the Sidelink communication transmit and / or receive resource pools, and configuration information of the Sidelink multicast / broadcast / unicast transmit and / or receive Sidelink resource pools.

[0057] In another optional embodiment of this invention, the method may further include:

[0058] In step S120, the terminal receives the Sidelink bearer and / or logical channel configuration information sent by the base station.

[0059] In step S122, the terminal sends an SR requesting the Sidelink resource.

[0060] Before the terminal sends the SR request for Sidelink resources, the terminal receives SR configuration information through at least one of the following methods:

[0061] The terminal receives the mapping information between Sidelink BWP resources and SR resources configured by the base station; or, the terminal receives the SR configuration sent by the base station specifically for requesting Sidelink communication / discovery resources; or, the system-reserved LCID value indicates the request for Sidelink discovery and / or communication resources; or, the terminal receives the mapping relationship between V2X frequency points and SR resources sent by the base station.

[0062] In another optional embodiment of this invention, the method may further include:

[0063] Step S124: The terminal sends a Sidelink BSR to the base station, wherein the Sidelink BSR includes: carrier spacing index or SL BWP ID.

[0064] Step S126: The terminal receives the Sidelink grant DCI sent by the base station, wherein the Sidelink grant DCI includes the sidelink transmission resource pool identifier / index and / or sidelink BWP identifier / index corresponding to the resource.

[0065] Step S128: After the terminal receives the Sidelink grant DCI sent by the base station, the terminal determines the sidelink transmission resource pool and / or sidelink BWP corresponding to the Sidelink grant.

[0066] In step S130, the terminal, based on the determined sidelink transmission resource pool and / or the subcarrier interval / target identifier / PPPP / 5QI / QFI / PDB / priority information corresponding to the sidelink BWP, schedules the data of the logical channel corresponding to the subcarrier interval / target identifier / PPPP / 5QI / QFI / PDB / priority to be assembled into a MAC PDU and transmitted via the sidelink.

[0067] In a preferred embodiment of this example, the method may further include:

[0068] Step S132: The terminal sends Sidelink V2X SPS assistance information to the base station;

[0069] Step S134: The terminal receives the Sidelink V2X SPS configuration sent by the base station.

[0070] The Sidelink V2X SPS auxiliary information includes at least one of the following: SPS type indication, duration, 5QI / QFI / PDB / delay / critical / Priority, and available subcarrier spacing.

[0071] The Sidelink V2X SPS configuration includes at least one of the following: SPS period, offset, Sidelink BWP / resource pool identifier / index corresponding to the SPS resource, frequency domain resource location and size, and validity period.

[0072] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0073] The present invention will now be described in detail with reference to specific embodiments thereof;

[0074] It should be noted that the research scope of NR V2X includes Sidelink unicast, Sidelink multicast, and Sidelink broadcast. Generally, Sidelink V2X communication can be divided into unicast, multicast, and broadcast. It's important to note that Sidelink unicast communication typically requires the two UEs conducting the unicast communication to first discover each other before initiating unicast-based Sidelink V2X communication. Generally, Sidelink discovery is also based on broadcast transmission. In this embodiment, Sidelink broadcast will be used to refer to both Sidelink broadcast communication and Sidelink discovery.

[0075] This embodiment is a system solution based on 5G NR for configuring the NR-based Sidelink resource pool, Sidelink BWP, sidelink resource requests, and resource allocation; each of these is described in detail below.

[0076] 1) Sidelink BWP and Configuration

[0077] NR Uu introduces a Bandwidth Part (BWP), which is a portion of the cell's bandwidth in the frequency domain. The base station configures and informs the UE which BWP to activate for receiving and transmitting. The UE's receive and transmit bandwidth does not need to be as large as the cell's bandwidth. The purpose of the BWP is to flexibly adjust bandwidth resources, support flexible scheduling, and save power. Considering the large bandwidth of NR, NR-based V2X Sidelink could also consider introducing BWP to reduce the processing power requirements of the UE and achieve power saving.

[0078] Figure 3 This is a schematic diagram of the Sidelink BWP according to an embodiment of the present invention, as shown below. Figure 3 As shown, the UE receives Sidelink BWP configuration information. This Sidelink BWP configuration can be BWP configuration information sent by the base station or pre-configured BWP information by the system. The Sidelink BWP configuration information includes BWP index, BWP bandwidth, BWP location, subcarrier spacing, and CP (Content Component).

[0079] a) Different types of business correspond to different BWPs

[0080] Different Sidelink BWPs can correspond to different bandwidths and subcarrier intervals, and can support different types of services. The UE receives Sidelink BWP mapping information from the base station, and the UE selects the Sidelink BWP to transmit / receive.

[0081] The following are some optional methods for sending Sidelink BWP:

[0082] Sidelink BWP mapping information can be a mapping relationship between PPP / 5QI / QFI / PDB / priority and subcarrier spacing. The UE determines the list of usable subcarrier spacings based on the PPP / 5QI / QFI / PDB / priority information corresponding to the Sidelink data packets / logical channels and the Sidelink BWP mapping information. Then, based on the subcarrier spacing information included in the Sidelink BWP configuration, it determines which Sidelink BWP to use for the transmission of the corresponding data packets / logical channels. Figure 4 According to embodiments of the present invention, the Sidelink transmission BWP selection flowchart corresponding to the data packet or logical channel is as follows: Figure 4As shown, the Sidelink BWP configuration information sent by the base station includes, in addition to BWP index, BWP bandwidth, BWP location, subcarrier spacing, CP, etc., one or more PPPP / 5QI / QFI / PDB / priority information. The UE determines which Sidelink BWP can be used for the transmission of the corresponding data packet / logical channel based on the PPPP / 5QI / QFI / PDB / priority information corresponding to the Sidelink data packet / logical channel and the one or more PPPP / 5QI / QFI / PDB / priority information contained in the Sidelink BWP configuration information.

[0083] The UE can send the required sidelink V2X service type information and / or subcarrier spacing information to the base station, and the base station sends the corresponding sidelink BWP configuration information and / or sidelink BWP mapping information to the UE. The V2X service type information includes PPPP / 5QI / QFI / PDB / priority information corresponding to the V2X service sent by the UE. Specifically, for each destination ID sent by the UE to the base station, the UE can send one or more PPPP / 5QI / QFI / PDB / priority information messages, each corresponding to a different V2X sidelink service. Figure 5 This is a flowchart illustrating a UE requesting Sidelink to send BWP configuration according to an embodiment of the present invention, as shown below. Figure 5 As shown, after receiving the request, the base station configures the corresponding Sidelink transmission BWP and / or Sidelink BWP mapping information for the UE. Alternatively, the UE can directly report a list of subcarrier spacing information corresponding to the sidelink transmission service to the base station. Upon receiving this request, the base station configures the corresponding Sidelink transmission BWP for the UE. After receiving the above configuration information, the UE determines which Sidelink BWP to use for sidelink data transmission based on the PPPP / PDB / 5QI / QFI / priority or subcarrier spacing corresponding to the Sidelink data / logical channel. Optionally, the Sidelink BWP configuration information sent by the base station to the UE via dedicated signaling includes Sidelink transmission BWP index information.

[0084] The following are some optional methods for receiving Sidelink BWP:

[0085] (1) The UE higher layer informs the PPPP / 5QI / QFI / PDB / priority corresponding to the Sidelink service to be received. The UE determines which Sidelink BWPs to receive data from based on the Sidelink BWP configuration information and / or Sidelink BWP mapping information mentioned above.

[0086] (2) The UE higher layer informs the available subcarrier interval list corresponding to the Sidelink service to be received. The UE determines which sidelink BWPs to receive data on based on the subcarrier interval information contained in the Sidelink BWP configuration information.

[0087] Figure 6 This is a flowchart of the Sidelink receive BWP selection process corresponding to a data packet or logical channel according to an embodiment of the present invention, such as... Figure 6 As shown, the UE can send the sidelink V2X service type information and / or subcarrier spacing information to the base station, and the base station sends the corresponding sidelink BWP configuration information and / or sidelink BWP mapping information to the UE. The V2X service type information includes PPPP / 5QI / QFI / PDB / priority information corresponding to the V2X service received by the UE. After receiving this request, the base station configures the corresponding Sidelink receive BWP and / or Sidelink BWP mapping information for the UE. Alternatively, the UE can directly report a list of subcarrier spacing information corresponding to the sidelink receive service to the base station, and the base station configures the corresponding Sidelink receive BWP for the UE after receiving this request. After receiving the above configuration information, the UE performs sidelink data transmission on the corresponding Sidelink BWP. Optionally, the Sidelink BWP configuration information sent by the base station to the UE via dedicated signaling includes Sidelink receive BWP index information.

[0088] Figure 7 This is a flowchart illustrating a UE requesting sidelink to receive BWP configuration according to an embodiment of the present invention, as shown below. Figure 7 As shown, for each Sidelink BWP associated with PPPP / 5QI / QFI / PDB / priority information, in addition to providing one or more corresponding PPPP / PDB / priorities, a threshold for PPPP / PDB / priority can also be provided. When the priority of the data packet or logical channel is higher than the priority corresponding to the threshold value, or the PDB corresponding to the data packet or logical channel is less than the PDB corresponding to the threshold value, the Sidelink BWP can be used.

[0089] In addition, if the UE's Sidelink logical channel is pre-configured with a list of available subcarrier intervals, the UE can determine which Sidelink BWP can be used for the transmission of the corresponding data packets / logical channel based on the subcarrier interval information contained in the Sidelink BWP configuration.

[0090] In addition to obtaining Sidelink BWP and / or Sidelink BWP mapping information through the base station, the UE can also obtain Sidelink BWP configuration information and / or Sidelink BWP mapping information through pre-configuration to select Sidelink transmit and / or receive Sidelink BWPs.

[0091] b) Unicast and broadcast / multicast correspond to different BWPs;

[0092] In NR Sidelink, a synchronous Sidelink BWP can be introduced. This synchronous sidelink BWP can be used for sending and receiving sidelink synchronization signals. Furthermore, for broadcast-based sidelink transmissions, such as sidelink discovery, sidelink multicast, or sidelink broadcast, a broadcast sidelink BWP can be configured. The synchronous sidelink BWP and the broadcast sidelink BWP may be the same.

[0093] Figure 8 These are schematic diagrams of the initial BWP and a regular BWP according to embodiments of the present invention, as shown below. Figure 8 As shown, two types of BWPs are configured: an initial BWP and a regular BWP. UEs interested in sidelink unicast communication can send and receive PC5 connection establishment information on the initial sidelink BWP to establish a PC5 connection. During the PC5 connection establishment or PC5 configuration process, UE nodes can negotiate the corresponding sidelink BWP and / or the corresponding sidelink resource pool for subsequent sidelink unicast communication data transmission / reception. Assuming BWP3 is used for negotiation, UE nodes only need to send and receive data packets on BWP3. If new V2X service data needs to be sent between UE nodes, they can further negotiate using either the initial BWP or BWP3 to determine whether a new sidelink BWP needs to be configured for unicast data transmission and reception based on the QoS requirements of the new V2X service.

[0094] Figure 9This is a flowchart illustrating the unicast communication UE negotiation of the Sidelink BWP and / or resource pool for Sidelink data transmission according to an embodiment of the present invention, as shown below. Figure 9 As shown, UE1 and UE2 receive or pre-configure unicast communication initial sidelink BWP configuration information from the base station. Assuming UE1 discovers UE2 and initiates a PC5 connection establishment with UE2, UE1 can send a PC5 connection establishment request message on the initial sidelink BWP. UE2, interested in sidelink unicast communication, listens to the initial sidelink BWP. Upon receiving the PC5 connection establishment request from UE1, UE2 sends a PC5 connection establishment response message.

[0095] UE1 can send Sidelink configuration information to UE2, which includes at least one of the following: V2X service information of the data to be transmitted, and available Sidelink BWP / resource pool configuration information. The service information of the data to be transmitted includes at least one of the following: QoS parameters (e.g., PPPP / 5QI / QFI / PDB / priority, GFBR), SDAP configuration information (QFI to DRB mapping, whether there is an SDAP subheader), RLC configuration information (AM / UM, bidirec or unidirec, out-of-order delivery, t-assembly timer, RLC SN length, retransmit, poll, etc.), PDCP configuration information (PDCP SN length, discard timer, t-reordering timer, data split threshold, integrity protection, maxCID, etc.), logical channel configuration information (logical channel identifier, priority, PBR, allowSCS), MAC layer configuration information, etc. Available Sidelink BWP / resource pool configuration information includes the Sidelink BWP's BWP identifier, and / or BWP bandwidth, BWP location, subcarrier spacing, CP, and other information.

[0096] After receiving the Sidelink configuration on the PC5 interface, UE2 sends the receivable V2X service information and / or supported transmit and / or receive Sidelink BWP / resource pool configurations to UE1. Specifically, UE2 determines which Sidelink BWP / resource pool configurations sent by UE1 can be supported based on its own capabilities and the Sidelink BWP / resource pool configurations configured in the serving cell. Furthermore, UE2 can establish corresponding Sidelink bearers and / or logical channels based on the V2X service information sent by UE1. If some Sidelink bearers and / or logical channels cannot be established, or some QoS flows are not supported, UE2 can also send a list of successfully established and / or failed Sidelink bearers / logical channels / QoS flows back to UE1. After receiving the Sidelink configuration feedback information from UE2, UE1 can begin initiating V2X Sidelink data transmission.

[0097] It is important to note that the Sidelink configuration information can reuse the same signaling process as the PC5 connection establishment, or it can use a different signaling process. Furthermore, when UE1 initiates a Sidelink unicast communication transmission, it can also send V2X service information (specifically including QoS flow parameter information, such as PDB / PER / priority / PBR, etc.) to the serving base station. After receiving the information, the serving base station sends the supported QoS flow information and / or sidelink bearer / logical channel configuration information. Optionally, after receiving the Sidelink configuration information sent by UE1, UE2 can also send V2X service information (specifically including QoS flow parameter information, such as PDB / PER / priority / PBR, etc.) to the serving base station. After receiving the information, the serving base station sends the supported QoS flow information and / or sidelink bearer / logical channel configuration information. Based on this information, UE2 sends back to UE1 a list of successfully established and / or failed Sidelink bearer / logical channel / QoS flow connections.

[0098] c) Activation / deactivation and switching of Sidelink BWP

[0099] For Sidelink, the UE activates only one Sidelink BWP for Sidelink transmission. However, the UE may be interested in receiving different types of V2X services, so the UE can listen to / receive multiple Sidelink BWPs simultaneously. Which SL BWPs to listen to depends on the services the UE is interested in. For example, the UE determines which SL BWPs to listen to based on the available SCS list for each service. Furthermore, a UE interested in unicast communication can only listen to the initial unicast SL BWP, and subsequently determine the unicast SL BWPs to listen to based on the sidelink configuration or PC5 signaling instructions.

[0100] For SL BWP activation and switching, the following switching methods can be considered:

[0101] (1) At the Uu interface, the UE receives the UE activation SL BWP and / or SL BWP index indicated by the base station through RRC signaling.

[0102] (2) At the Uu interface, the UE receives the SL BWP and / or SL BWP index activated by the base station via DCI.

[0103] (3) During the LCP process, the UE selects an available SL BWP for the logical channel corresponding to the data to be transmitted, based on the PPPP / PDB / priority / 5QI, QFI / subcarrier spacing information. If necessary, it initiates SL BWP handover and / or activation.

[0104] (4) On the PC5 interface, the UE node sends / receives activated SL and / or receives BWP information via PC5 signaling.

[0105] (5) On the PC5 interface, the UE can carry the active SL BWP index in the SCI. This instructs the peer UE to switch to the new receiving SL BWP.

[0106] The UE receives the inactivity timer configuration from the base station. If a unicast UE does not receive data sent to it for a period of time on a certain unicast SL BWP, the inactivity timer expires, and the UE can fall back to the unicast initial BWP.

[0107] During SL BWP handover, for example, when the UE switches from SL BWP1 to SL BWP2, the UE uses the autonomous resource selection method. However, if the sensing result on the resource pool corresponding to SL BWP2 is not yet available, the UE can first use the autonomous random selection resource pool on SL BWP2.

[0108] d) The interaction between Uu BWP and Sidelink BWP

[0109] For unpaired spectrum, the BWP used for Sidelink discovery / Sidelink broadcast / Sidelink multicast / Sidelink initial unicast can reuse the same Uu BWP as paging and SI, so that the UE can receive system information / paging information and Sidelink information on a unified BWP.

[0110] For scenarios where Sidelink uses Uu interface UL resources, configure the same Sidelink BWP and UL BWP, or make the Sidelink BWP and UL BWP overlap in the frequency domain as much as possible.

[0111] For Sidelink scenarios using a dedicated PC5 carrier, the Sidelink BWP and the Uu port BWP are configured independently.

[0112] 2) Sidelink resource pool configuration

[0113] Sidelink resource pool configuration information includes sidelink transmit resource pool configuration information and sidelink receive resource pool information. The specific sidelink resource pool configuration indicates the time-frequency domain location of the sidelink resources. The sidelink resource pool information further provides the time-frequency domain location information of the SCI and data resources, and / or subcarrier spacing information. For example, time-domain information may include the SL slot bitmap, while frequency-domain information can be indicated through the SL BWP, or through independent start RB positions, the number of subchannels / RBs, etc. Different time-domain bitmaps can be configured on a single SL BWP frequency domain, corresponding to different sidelink resource pools. Furthermore, within an SL BWP, the frequency domain can be further subdivided, corresponding to different sidelink resource pools.

[0114] Since different Sidelink BWPs are associated with different numerologies (corresponding to different subcarrier intervals), the V2X Sidelink resource pool based on BWPs is also associated with different numerologies, which can be used to support different types of V2X services.

[0115] The Sidelink resource pool configuration can include the following information:

[0116] (1) This community and neighboring communities are not covered;

[0117] The Sidelink resource pool configuration information received by the UE from the base station includes the transmit and / or receive resource pool configuration for the local cell. Additionally, the UE can receive transmit and / or receive resource pool configurations for neighboring cells and cross-carrier transmit and / or receive resource pool configurations from the base station. Furthermore, the UE can pre-configure transmit and receive resource pools on each carrier; when the UE is in a no-coverage state, it can use the pre-configured resource pools for Sidelink transmission and reception.

[0118] (2) LTE, NR

[0119] In scenarios where LTE and NR coexist, the UE receives the Sidelink transmit and / or receive resource pool configurations corresponding to LTE and / or NR from the base station. The corresponding resource pool information may carry version or RAT information.

[0120] (3) Discovery, Communication

[0121] Sidelink discovery and sidelink communication correspond to different sidelink transmit and / or receive resource pools. The sidelink transmit and / or receive resource pool configurations corresponding to the sidelink discovery and / or sidelink communication received by the UE from the base station.

[0122] (4) Unicast, Broadcast

[0123] In Sidelink communication, Sidelink multicast and / or broadcast and Sidelink unicast can correspond to different transmit and / or receive resource pools. For Sidelink unicast, the resource pool configuration includes resources corresponding to HARQ ACK / NACK transmissions. For Sidelink unicast, the resource pool configuration includes the initial transmit and / or receive resource pool, as well as other transmit and / or receive resource pools. The initial transmit and / or receive resources may correspond to the Sidelink initial BWP. For Sidelink broadcast, the resource pool configuration may include the beam sweeping period and resource configuration. The UE receives Sidelink multicast / broadcast and / or Sidelink unicast resource pool configuration information from the base station. The corresponding resource pool configuration information may include a communication mode indication, such as unicast, multicast, or broadcast. It is important to note that the UE can receive neighboring cell Sidelink resource pool configuration information from the base station. The neighboring cell Sidelink resource pool configuration information may include neighboring cell Sidelink multicast / broadcast resource pool information, and / or the transmit / receive resource pool information corresponding to the neighboring cell Sidelink unicast initial BWP.

[0124] Figure 10 This is a flowchart of the Sidelink resource configuration of the UE receiving base station according to an embodiment of the present invention, such as... Figure 10 As shown, for UEs in idle and inactive states, the UE receives V2X resource pool information broadcast by the base station. If the broadcast message does not contain V2X related SI information, and if SIB1 indicates SI request RACH resources, the UE uses MSG1 to request V2X related SI; if SIB1 does not configure SI request RACH resources, the UE uses MSG3 (RRCSystemInfoRequest) to request V2X related SI. Upon receiving this, the base station sends the V2X related SI. Furthermore, the base station can include a V2X support indication in the SIB1 sent by the base station. If this indication is present but V2X sidelink resource configuration information is not broadcast, the UE enters the RRC connection state to request resources.

[0125] Furthermore, Figure 11 This is a flowchart illustrating a UE requesting V2X Sidelink configuration information according to an embodiment of the present invention, such as... Figure 11 As shown, considering the various V2X resource pool types described above, the UE does not necessarily need to obtain all V2X Sidelink-related resource pool information. The UE sends a Sidelink configuration information request to the base station. This request includes indications for Sidelink synchronization, and / or Sidelink discovery, and / or Sidelink broadcast / multicast communication, and / or Sidelink unicast communication. The base station then sends the corresponding Sidelink configuration information to the UE.

[0126] A V2X UE in RRC connected state can also send a V2X sdielink configuration request to the base station. The base station configures the transmit and / or receive resource pools corresponding to base station scheduling resource allocation (Mode 3) and / or autonomous resource allocation (Mode 4) for the UE through dedicated signaling.

[0127] Specifically, the V2X sidelink configuration request sent by the V2X UE may include any combination of the following information: interest indications for sidelink discovery transmission and / or reception, interest indications for sidelink unicast communication transmission and / or reception, interest indications for sidelink multicast / broadcast communication transmission and / or reception, sidelink unicast communication target identifier, and sidelink broadcast / multicast communication target identifier. For each sidelink unicast communication target identifier and sidelink broadcast / multicast communication target identifier, the V2X sidelink configuration request may also include service type information, such as 5QI, PDB, PER / PPPR, priority / PPPP, GFBR / PBR, ARP, etc. For each sidelink unicast communication target identifier, the V2X sidelink configuration request may also include at least one of the following information: unicast peer UE identifier, peer UE's geographical location and / or beam index / beam direction information.

[0128] After receiving a V2X Sidelink configuration request from a connected-mode V2X UE, the base station sends V2X Sidelink resource configuration to the UE. Specifically, the V2X Sidelink resource configuration includes Mode3 and / or Mode4 resource pool configuration information.

[0129] For NR V2X, to better support various V2X service types, the V2X sidelink resource configuration sent by the base station can simultaneously include both mode 3 and mode 4 resource pools for the UE. The UE can more flexibly choose which resource to use based on service requirements. For example, for services with high reliability requirements, the UE can choose mode 3 resources. Furthermore, for the mode 4 random resource pool, each pool can be associated with one or more latency requirement levels / ranges (represented by numerology), facilitating the selection of different resource pools for traffic with different latency requirements. In addition, the base station can configure different mode sidelink resource pools on different carriers, such as configuring a mode 3 transmission resource pool on carrier 1 and a mode 4 transmission resource pool on carrier 2. Furthermore, for V2X UEs interested in unicast reception, the sidelink configuration information received can also include a sidelink unicast initial receive resource pool or a receive resource pool based on the sidelink unicast initial BWP.

[0130] In addition to the sidelink resource pool configuration information mentioned above, the V2X Sidelink configuration received by the UE from the base station may also include Sidelink bearer and / or logical channel configuration information. Specifically, it can include any combination of the following information: QoS parameters (such as PPP / 5QI / QFI / PDB / priority, GFBR), SDAP configuration information (QFI to DRB mapping, whether there is an SDAP subheader), RLC configuration information (AM / UM, bidirec or unidirec, out-of-order delivery, t-assembly timer, RLCSN length, retransmit, poll, etc.), PDCP configuration information (PDCP SN length, discard timer, t-reordering timer, data split threshold, integrity protection, maxCID, etc.), logical channel configuration information (logical channel identifier, priority, PBR, allowSCS), MAC layer configuration information, etc. Usable Sidelink BWP / resource pool configuration information includes the Sidelink BWP's BWP identifier, and / or BWP bandwidth, BWP location, subcarrier spacing, CP, etc. After receiving the above configuration, the UE can configure the sidelink bearer and / or logical channel accordingly.

[0131] After receiving the transmit and / or receive resource pool configuration sent by the base station or pre-configured by the system, the UE can select a resource pool, as follows:

[0132] a) A UE may be interested in receiving different types of V2X services, therefore, a UE can simultaneously listen to / receive from multiple Sidelink BWPs / resource pools. Which SL BWPs / resource pools to listen to depends on the services the UE is interested in. For example, the UE determines which SL BWPs / receive resource pools to listen to based on the available SCS list / service type information corresponding to each service. A UE interested in unicast communication may only listen to the unicast initial SL BWP or the unicast initial receive resource pool, and subsequently determine other unicast SL BWPs or unicast receive resource pools to listen to based on the sidelink configuration sent by the base station or the PC5 signaling indication sent by the peer UE.

[0133] b) For UEs in idle or inactive states, or UEs in connected state that decide to use autonomous resource allocation, after receiving multiple sidelink transmission resource pools from the base station or pre-configuring them by the system, the UE selects the sidelink BWP / sidelink transmission resource pool corresponding to the available SCS for the logical channel of the service data to be transmitted. If there are multiple available sidelink BWP / sidelink transmission resource pools, the UE further selects the first sidelink transmission resource pool, or the sidelink transmission resource pool with the smallest CBR value, or arbitrarily selects any sidelink transmission resource pool.

[0134] c) For connected UEs, the buffer status of sidelink bearers / logical channels can be reported to the base station, which then allocates sidelink resources to the UE. The sidelink grant sent by the base station to the UE includes the sidelink BWP index and / or the sidelink transmit resource pool index. After receiving the sidelink grant, the UE determines which logical channels to schedule for data transmission based on the QoS information (such as PPPP / PDB / PPPR / 5QI / SCS) corresponding to the sidelink transmit resource pool and / or the sidelink bearer / logical channel.

[0135] d) For sidelink unicast communication, the unicast initiating UE sends V2X sidelink BWP / sidelink transmit resource pool information to the peer UE. After receiving this information, the peer UE listens for the sidelink receive resource pool corresponding to the V2X sidelink BWP / sidelink transmit resource pool information.

[0136] 3) UE resource requests and allocation in connected state;

[0137] For UEs using base station scheduling resource allocation, sidelink resource request and allocation can be divided into the following steps:

[0138] (1) The UE sends an SR;

[0139] When a UE sends an SR request for sidelink communication resources, the following SR resource configuration and SR sending method can be used to enable the base station to distinguish between sidelink communication and Uu communication:

[0140] a) The base station configures the mapping relationship between Sidelink BWP / resources and SR configuration; when the UE uses the corresponding SR resource to send SR, the base station knows that it is requesting sidelink communication resources;

[0141] b) Configure a dedicated SR configuration for the UE to request sidelink communication resources;

[0142] c) Use an uplink reserved LCID value that is specifically used to indicate a request for sidelink communication resources.

[0143] d) Configure the mapping relationship between V2X frequency points reported in sidelinkUEInformation and SR configuration;

[0144] (2) The UE sends a BSR;

[0145] The Sidelink BSR sent by the UE includes the logical channel group identifier, buffer size, and sidelink communication target identifier / index. In addition, the Sidelink BSR sent by the UE may also carry the SCS index / SL BWP id. The SCS index / SLBWP id informs the base station of the subcarrier spacing type or SL BWP frequency domain information required for the UE's data transmission.

[0146] (3) The base station sends a sidelink grant;

[0147] Considering that the base station configures multiple mode 3 sidelink transmission resource pools and / or sidelink BWPs for the UE, the base station includes a pool id and / or bwp id in the sidelink grant DCI it transmits, which is used to indicate the sidelink transmission resource pool and / or sidelink BWP corresponding to the DCI resource.

[0148] The UE schedules and assembles the MAC PDU and transmits it. After receiving the sidelink grant, the UE determines the sidelink transmission resource pool and / or sidelink BWP corresponding to the resource, determines the subcarrier interval or the corresponding QoS parameter (PPPP / PDB / PER / 5QI) corresponding to the resource pool or sidelink BWP, and then schedules the data of the logical channel corresponding to the subcarrier interval or QoS parameter and assembles it into a MAC PDU and transmits it through the physical layer.

[0149] For sidelink resource allocation, support for sidelink resource preemption could also be considered. For example, the base station could preempt sidelink resources already allocated to UE1 and then allocate them to UE2 for delay-critical V2X data transmission. To support this function, the sidelink configuration information received by the UE from the base station could include SL-INT-RNTI. The UE listens for SL-INT-RNTI on the PDCCH; if it receives a sidelink transmission interruption indication, the UE will assume that there is no available information for the resource location indicated by SL-INT-RNTI.

[0150] 4) Semi-static resource configuration

[0151] A UE may need to send multiple V2X messages simultaneously, with varying periods, arrival times, and sizes. To reduce latency and better utilize resources, Release 14 V2X supports multiple SPS processes. The UE needs to report auxiliary information (packet arrival period, packet arrival offset, PPP, maximum MAC PDU size) to help the base station configure and activate appropriate SPS processes. Specifically, the base station uses DCI format 5A scrambled via SL-V-SPS-RNTI to activate or deactivate the SPS process indicated by the SLSPS configuration index field.

[0152] V2X services, like URLLC services, require low latency and high reliability. Resource transmission via SPS (Service Packet Support) communication through RRC signaling configuration (Type 1) sidelink can be considered to reduce latency. Since V2X messages have various message types with different message periods, arrival times, and packet sizes, the NR sidelink needs to support multiple Type 1 configuration / SPS processes. Alternatively, DCI (Distributed Communication Interface) can be reused for SPS activation and deactivation mechanisms (Type 2).

[0153] Optionally, the UE sends Sidelink V2X SPS assistance information to the base station, and the UE receives the Sidelink V2X SPS configuration sent by the base station. Further Sidelink V2X SPS assistance information may include any combination of the following information: SPS type indication (type1 or type2), QoS indication (5QI / PDB / delay critical / PER), available subcarrier spacing, etc. Based on the above assistance information, the base station configures type 1 or type 2 SPS resources for the UE. Specific Sidelink V2X SPS configurations include SPS period, offset, the SL transmission resource pool (index) and / or SL BWP (index) corresponding to the SPS resources, frequency domain resource location and size, etc.

[0154] For sidelink SPS resources, the base station cannot know when the UE stops using SPS resources to transmit data. Therefore, it is necessary to consider deactivating / releasing the SL SPS. The following methods can be considered:

[0155] 1) The UE estimates how long this type of data will last / how many cycles of type 1 resources are needed, and reports the duration in the UE Assistance Information. The gNB then configures the release of type 1 resources or configures the validity period based on this information.

[0156] 2) When the UE no longer needs a certain type 1 resource configuration (for example, no data is sent for N consecutive times), the type 1 resource configuration is released and the gNB is notified (the released type 1 configuration index).

[0157] 5) Access control;

[0158] NR provides unified access control, implemented through access categories and access identities. Access identities are configured on the SIM card when the UE subscribes; Access identities 11-15 are special access classes, and Access identities 3-10 are reserved values. Access categories are defined based on UE specifications and access attempts; Access categories 8-31 are reserved standard access types, while Access categories 32-63 are left for operators to define themselves.

[0159] V2X services require high reliability and low latency. For access attempts initiated for V2X sidelink / Uu communication, access can be controlled by defining an Access identity or Access category (SA1 definition) and configuring barring parameters. The UE NAS determines the Access category and Access identity for the access attempt. If the access attempt is not barred, the UE NAS performs a mapping from the access attempt (associated Access category and Access Identity(ies)) to the Establishment Cause and provides it to the RRC for inclusion in the connection request, allowing the gNB to decide whether to accept the request.

[0160] Example 2

[0161] This embodiment also provides a resource allocation device for a direct link in a vehicle network. This device is used to implement the above embodiments and preferred embodiments, and details already described will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0162] Figure 12 This is a schematic diagram of a resource allocation device for a direct link in a vehicle-to-everything (V2X) network according to an embodiment of the present invention. This device is applied to the terminal side, such as... Figure 12 The device includes: a first receiving module 1202, used to receive SidelinkBWP / resource pool configuration information; and a transmission module 1204, coupled to the first receiving module 1202, used to perform Sidelink data transmission according to the received SidelinkBWP / resource pool configuration information.

[0163] The Sidelink BWP configuration information includes at least one of the following: BWP index, BWP bandwidth, BWP location, subcarrier spacing, cyclic prefix, and one or more target identifier / PPP / 5QI / QFI / PDB / priority information.

[0164] In addition, the SidelinkBWP configuration information also includes Sidelink BWP mapping information, indicating the mapping relationship between target identifier / PPPP / 5QI / QFI / PDB / priority information and subcarrier spacing.

[0165] In an optional embodiment of this example, the transmission module 1204 is further configured to determine the Sidelink BWP and / or Sidelink resource pool for data transmission / reception based on the received Sidelink BWP configuration information.

[0166] In an optional embodiment of this invention, the apparatus further includes: a first transmitting module, configured to send request information to the base station before the first receiving module receives the Sidelink BWP configuration information;

[0167] The requested information includes at least one of the following: V2X relatedSI request; Sidelink synchronization, and / or Sidelink discovery, and / or Sidelink broadcast / multicast communication, and / or Sidelink unicast communication resource configuration request; LTE Sidelink resource configuration request; Interest indication for Sidelink discovery transmission and / or reception; Interest indication for Sidelink unicast communication transmission and / or reception; Interest indication for Sidelink multicast / broadcast communication transmission and / or reception; Sidelink unicast communication target identifier or Sidelink broadcast / multicast communication target identifier; PPPP / 5QI / QFI / PDB / priority / PER / GFBR / PBR / ARP; Subcarrier spacing information;

[0168] For each sidelink unicast communication target identifier, at least one of the following information is included: unicast peer UE identifier, peer UE geographic location and / or beam index / beam direction information.

[0169] It should be noted that the Sidelink BWP / resource pool information involved in this embodiment includes at least one of the following: synchronous Sidelink BWP, broadcast Sidelink BWP / resource pool, multicast Sidelink BWP / resource pool, and unicast Sidelink BWP / resource pool.

[0170] In addition, the Sidelink BWP / resource pool also includes: an initial Sidelink BWP / resource pool; wherein, the initial Sidelink BWP / resource pool is used for the establishment of Sidelink unicast connections and / or the sending or receiving of unicast data transmission resource configuration signaling for the corresponding sidelink BWP / resource pool.

[0171] The unicast data transmission resource configuration method includes: the first terminal sending a Sidelink BWP and / or Sidelink resource pool carrying V2X service information to the second terminal; the first terminal receiving the acceptable V2X service information and / or the Sidelink BWP / resource pool configuration that supports sending and / or receiving sent by the second terminal.

[0172] In another optional embodiment of this invention, the apparatus may further include:

[0173] The selection module is used to select the corresponding Sidelink BWP / resource pool for data transmission based on the target identifier / PPPP / 5QI / QFI / PDB / priority information or available subcarrier spacing information corresponding to the data packet / logical channel, and the Sidelink BWP configuration information; or,

[0174] The processing module is used to determine the Sidelink BWP / resource pool to listen to or receive based on the target identifier / PPPP / 5QI / QFI / PDB / priority information or subcarrier spacing information corresponding to the service it is interested in receiving; or,

[0175] The first activation module is used to receive the activation SL BWP / resource pool index indicated by the base station via RRC signaling; or,

[0176] The second activation module is used to receive the activation SL BWP / resource pool index indicated by the base station via DCI; or,

[0177] The second receiving module is used to receive SL transmission and / or receive BWP / resource pool information / index contained in PC5 signaling; or,

[0178] The third receiving module is used to receive the SL BWP / resource pool index for activation / switching contained in the SCI; or,

[0179] The fourth receiving module is used to receive the inactivity timer configuration sent by the base station. When the inactivity timer expires, the terminal returns to the unicast initial Sidelink BWP / resource pool.

[0180] Specifically, for unpaired spectrum, the Sidelink BWP reuses the same Uu BWP as paging and SI; and / or, for scenarios where Sidelink uses Uu interface UL resources, the same Sidelink BWP and UL BWP are configured, or the Sidelink BWP and UL BWP overlap in the frequency domain; and / or, for scenarios where Sidelink uses dedicated PC5 carrier, the Sidelink BWP and Uu interface BWP are configured independently.

[0181] The Sidelink resource pool configuration information includes at least one of the following: the time-frequency domain location of Sidelink resources, the time-frequency domain location information of SCI resources, the time-frequency domain location information of data resources, the subcarrier spacing information, and unicast / multicast / broadcast indications.

[0182] In addition, the Sidelink resource pool configuration information includes at least one of the following:

[0183] Configuration information of the transmit and / or receive resource pools of the cell where the terminal is stationed or serving, configuration information of the transmit and / or receive resource pools of neighboring cells / neighboring frequency points, configuration information of the Sidelink transmit and / or receive resource pools corresponding to LTE and / or NR, configuration information of the Sidelink discovery transmit and / or receive resource pools, configuration information of the Sidelink communication transmit and / or receive resource pools, and configuration information of the Sidelink multicast / broadcast / unicast transmit and / or receive Sidelink resource pools.

[0184] Optionally, the apparatus of this embodiment may further include: a fifth receiving module, configured to receive Sidelink bearer and / or logical channel configuration information sent by the base station.

[0185] Optionally, the apparatus of this embodiment may further include: a second sending module, used to send an SR requesting Sidelink resources.

[0186] Optionally, the apparatus of this embodiment may further include: a sixth receiving module, configured to receive SR configuration information in at least one of the following ways before the second sending module sends the SR requesting Sidelink resources:

[0187] Receive the mapping information between Sidelink BWP resources and SR resources configured by the base station; or, receive the SR configuration sent by the base station specifically for requesting Sidelink communication / discovery resources; or, receive the system reserved LCID value indicating the request for Sidelink discovery and / or communication resources; or, receive the mapping relationship between V2X frequency points and SR resources sent by the base station.

[0188] Optionally, the apparatus of this embodiment may further include: a third transmitting module, configured to transmit a Sidelink BSR to the base station, wherein the Sidelink BSR includes: a subcarrier spacing index or an SL BWP ID.

[0189] Optionally, the apparatus of this embodiment may further include: a sixth receiving module, configured to receive a Sidelink grant DCI sent by the base station, wherein the Sidelink grant DCI includes the sidelink transmission resource pool identifier / index and / or the sidelink BWP identifier / index corresponding to the resource.

[0190] Optionally, the apparatus of this embodiment may further include: a determining module, configured to determine the sidelink transmission resource pool and / or sidelink BWP corresponding to the sidelink grant after the sixth receiving module receives the Sidelink grant DCI sent by the base station; and a scheduling module, configured to schedule the data of the logical channel corresponding to the determined sidelink transmission resource pool and / or sidelink BWP to be assembled into a MAC PDU and transmitted via sidelink according to the subcarrier spacing / target identifier / PPPP / 5QI / QFI / PDB / priority information.

[0191] Optionally, the apparatus of this embodiment may further include: a fourth transmitting module, used to transmit Sidelink V2X SPS auxiliary information to the base station; and a seventh receiving module, used to receive the Sidelink V2X SPS configuration transmitted by the base station.

[0192] The Sidelink V2X SPS auxiliary information includes at least one of the following: SPS type indication, duration, 5QI / QFI / PDB / delay / critical / Priority, and available subcarrier spacing.

[0193] The Sidelink V2X SPS configuration includes at least one of the following: SPS period, offset, Sidelink BWP / resource pool identifier / index corresponding to the SPS resource, frequency domain resource location and size, and validity period.

[0194] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0195] Embodiments of the present invention also provide a storage medium storing a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.

[0196] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0197] Step S1: The terminal receives the Sidelink BWP / resource pool configuration information for the direct link;

[0198] Step S2: The terminal performs Sidelink data transmission according to the received Sidelink BWP / resource pool configuration information;

[0199] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing computer programs, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0200] Embodiments of the present invention also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0201] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0202] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:

[0203] Step S1: The terminal receives the Sidelink BWP / resource pool configuration information for the direct link;

[0204] Step S2: The terminal performs Sidelink data transmission according to the received Sidelink BWP / resource pool configuration information;

[0205] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0206] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0207] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A resource allocation method for direct links in a vehicle-to-everything (V2X) network, characterized in that, include: The terminal receives the Sidelink bandwidth portion of the BWP configuration information. The Sidelink BWP configuration information includes at least one of the following: Target Identifier ID, Proximity Service Per Packet Priority (PPPP), 5G Quality of Service Indicator (5QI), Quality of Service Flow Identifier (QFI), Packet Delay Budget (PDB), and Priority Information. The Sidelink BWP configuration information also includes Sidelink BWP mapping information, indicating the mapping relationship between any of the following and the subcarrier spacing: target identifier ID, PPPP, 5QI, QFI, PDB, and priority information. The terminal performs Sidelink data transmission based on the received Sidelink BWP configuration information.

2. The method according to claim 1, characterized in that, The Sidelink BWP configuration information also includes at least one of the following: BWP index, BWP bandwidth, BWP location, subcarrier spacing, and cyclic prefix.

3. The method according to claim 1, characterized in that, The terminal performs Sidelink data transmission based on the received Sidelink BWP configuration information, including: The terminal determines the Sidelink BWP to send or receive data based on the received Sidelink BWP configuration information.

4. The method according to claim 1, characterized in that, Before the terminal receives the Sidelink BWP configuration information, the method further includes: the terminal sending request information to the base station; The request information includes at least one of the following: System information (SI) requests related to Vehicle-to-Everything (V2X) communication; A resource configuration request for at least one of the following: Sidelink synchronization, Sidelink discovery, Sidelink broadcast or multicast communication, and Sidelink unicast communication; Long Term Evolution (LTE) Sidelink Resource Configuration Request; Sidelink discovers at least one of the sending and receiving interest indications; An indication of interest in at least one of the transmissions and receptions of Sidelink unicast communication; An indication of interest in at least one of the transmission or reception of Sidelink multicast or broadcast communications; Sidelink unicast communication target identifier ID, or Sidelink broadcast or multicast communication target identifier ID; PPPP, 5QI, QFI, PDB, priority, packet error rate (PER), guaranteed stream bit rate (GFBR), priority bit rate (PBR), or address protocol resolution (ARP); Subcarrier spacing information; For each sidelink unicast communication target identifier ID, at least one of the following information is included: unicast peer user equipment (UE) identifier, peer UE geographical location, beam index, or beam indication information.

5. The method according to claim 3, characterized in that, The Sidelink BWP includes at least one of the following: synchronous Sidelink BWP, broadcast Sidelink BWP, multicast Sidelink BWP, and unicast Sidelink BWP.

6. The method according to any one of claims 1 to 4, characterized in that, The Sidelink BWP further includes: an initial Sidelink BWP; wherein the initial Sidelink BWP is configured to perform at least one of the following: establishing a Sidelink unicast connection, sending or receiving unicast data transmission resource configuration signaling on the corresponding Sidelink BWP.

7. The method according to claim 6, characterized in that, The unicast data transmission resource configuration includes: The first terminal sends a usable Sidelink BWP containing V2X service information to the second terminal. The first terminal receives at least one of the following from the second terminal: acceptable V2X service information; and a Sidelink BWP configuration that supports sending and receiving at least one of the following.

8. The method according to claim 3, characterized in that, The method further includes: The terminal selects a Sidelink BWP corresponding to any one of the following: target identifier ID, PPPP, 5QI, QFI, PDB, priority information, and available subcarrier interval information, based on the data packet or logical channel, and the Sidelink BWP configuration information, for data transmission; or, The terminal determines the Sidelink BWP being monitored or received based on any one of the following: target identifier ID, PPPP, 5QI, QFI, PDB, priority information, and subcarrier spacing information corresponding to the service it is interested in receiving; or, The terminal receives the activated direct link SL BWP index indicated by the base station via Radio Resource Control (RRC) signaling; or... The terminal receives the activated SL BWP index indicated by the base station via downlink control information (DCI); or, The terminal receives at least one of the BWP information or index sent or received by SL contained in the PC5 signaling; or, The terminal receives the activated or switched SL BWP index contained in the SCI; or, The terminal receives the inactivity timer configuration sent by the base station, wherein when the inactivity timer expires, the terminal returns to the unicast initial Sidelink BWP.

9. The method according to claim 1, characterized in that, Includes at least one of the following: For unpaired spectrum, the Sidelink BWP and the paging and system information SI reuse the same Uu BWP; For scenarios where Sidelink uses Uu interface UL resources, configure the same Sidelink BWP and uplink UL BWP, or configure the Sidelink BWP and UL BWP to overlap in the frequency domain; For scenarios where Sidelink uses a dedicated PC5 carrier, the Sidelink BWP and the Uu interface BWP are configured independently.

10. The method according to claim 1, characterized in that, The method further includes: The terminal receives at least one of the Sidelink bearer channel configuration information and logical channel configuration information sent by the base station.

11. The method according to claim 1, characterized in that, The method further includes: The terminal sends a scheduling request (SR) for Sidelink resources.

12. The method according to claim 11, characterized in that, The method further includes: Before the terminal sends the SR requesting Sidelink resources, the terminal receives SR configuration information through at least one of the following methods: The terminal receives the mapping information between Sidelink BWP resources and SR resources configured by the base station; or, The terminal receives an SR configuration sent by the base station, specifically for requesting Sidelink communication resources or discovering resources; or, The system reserved logical channel identifier (LCID) value indicates at least one of the requested Sidelink discovery resources and communication resources; or, The terminal receives the mapping relationship between V2X frequency points and SR resources sent by the base station.

13. The method according to claim 1, characterized in that, The method further includes: The terminal sends a Sidelink Buffer Status Report (BSR) to the base station, wherein the Sidelink BSR includes: Subcarrier Spacing Index or SL BWP ID.

14. The method according to claim 1, characterized in that, The method further includes: The terminal receives Sidelink Grant Downlink Control Information (grant DCI) sent by the base station, wherein the Sidelink grant DCI includes a sidelink BWP identifier or index.

15. The method according to claim 14, characterized in that, After the terminal receives the Sidelinkgrant DCI sent by the base station, the method further includes: The terminal determines the sidelink BWP corresponding to the sidelink grant. The terminal, based on any one of the subcarrier spacing, target identifier ID, PPPP, 5QI, QFI, PDB, and priority information corresponding to the determined sidelink BWP, schedules the data of the logical channel corresponding to any one of the subcarrier spacing, target identifier ID, PPPP, 5QI, QFI, PDB, and priority information to assemble into a Media Access Control Protocol Data Unit (MAC PDU) and transmits it via the sidelink.

16. The method according to claim 1, characterized in that, The method further includes: The terminal sends Sidelink V2X Semi-Persistent Scheduling (SPS) auxiliary information to the base station; The terminal receives the Sidelink V2X SPS configuration sent by the base station.

17. The method according to claim 16, characterized in that, The Sidelink V2X SPS assistance information includes at least one of the following: SPS type indication, duration, 5QI, QFI, PDB, delay, criticality, priority, available subcarrier spacing.

18. The method according to claim 16, characterized in that, The Sidelink V2X SPS configuration includes at least one of the following: SPS period, offset, Sidelink BWP identifier or index corresponding to SPS resource, frequency domain resource location and size, validity period.

19. A resource allocation device for a direct link in a vehicle-to-everything (V2X) network, applied on the terminal side, characterized in that, include: The first receiving module is used to receive the Sidelink bandwidth portion of the BWP configuration information. The Sidelink BWP configuration information includes at least one of the following: Target Identifier ID, Proximity Service Per Packet Priority (PPPP), 5G Quality of Service Indicator (5QI), Quality of Service Flow Identifier (QFI), Packet Delay Budget (PDB), and Priority Information. The SidelinkBWP configuration information also includes Sidelink BWP mapping information, indicating the mapping relationship between any of the following and the subcarrier spacing: target identifier ID, PPPP, 5QI, QFI, PDB, and priority information. The transmission module is used to perform Sidelink data transmission according to the received Sidelink BWP configuration information.

20. The apparatus according to claim 19, characterized in that, The Sidelink BWP configuration information also includes at least one of the following: BWP index, BWP bandwidth, BWP location, subcarrier spacing, and cyclic prefix.

21. The apparatus according to claim 19, characterized in that, The transmission module is further configured to determine the Sidelink BWP for data transmission or reception based on the received Sidelink BWP configuration information.

22. The apparatus according to claim 19, characterized in that, The device further includes: The first transmitting module is used to send a request message to the base station before the first receiving module receives the Sidelink BWP configuration information. The request information includes at least one of the following: System Information (SI) requests related to Vehicle-to-Everything (V2X) communication; A resource configuration request for at least one of the following: Sidelink synchronization, Sidelink discovery, Sidelink broadcast or multicast communication, and Sidelink unicast communication; Long Term Evolution (LTE) Sidelink Resource Configuration Request; Sidelink discovers at least one of the sending and receiving interest indications; An indication of interest in at least one of the transmissions and receptions of Sidelink unicast communication; An indication of interest in at least one of the transmission or reception of Sidelink multicast or broadcast communications; Sidelink unicast communication target identifier ID, or Sidelink broadcast or multicast communication target identifier ID; PPPP, 5QI, QFI, PDB, priority, packet error rate (PER), guaranteed stream bit rate (GFBR), priority bit rate (PBR), or address protocol resolution (ARP); Subcarrier spacing information; For each sidelink unicast communication target identifier ID, at least one of the following information is included: unicast peer user equipment (UE) identifier, peer UE geographical location, beam index, or beam indication information.

23. The apparatus according to claim 21, characterized in that, The Sidelink BWP includes at least one of the following: synchronous Sidelink BWP, broadcast Sidelink BWP, multicast Sidelink BWP, and unicast Sidelink BWP.

24. The apparatus according to any one of claims 19 to 22, characterized in that, The Sidelink BWP further includes: an initial Sidelink BWP; wherein the initial Sidelink BWP is configured to perform at least one of the following: establishing a Sidelink unicast connection, sending or receiving unicast data transmission resource configuration signaling on the corresponding Sidelink BWP.

25. The apparatus according to claim 24, characterized in that, The unicast data transmission resource configuration methods include: The first terminal sends a usable Sidelink BWP containing V2X service information to the second terminal. The first terminal receives at least one of the following from the second terminal: acceptable V2X service information; and a Sidelink BWP configuration that supports sending and receiving at least one of the following.

26. The apparatus according to claim 21, characterized in that, The device further includes: The selection module is used to select a Sidelink BWP corresponding to any one of the following for data transmission: target identifier ID, PPPP, 5QI, QFI, PDB, priority information, and available subcarrier spacing information corresponding to the data packet or logical channel, and the Sidelink BWP configuration information; or, The processing module is used to determine the monitored or received Sidelink BWP based on any one of the following: target identifier ID, PPPP, 5QI, QFI, PDB, priority information, and subcarrier spacing information corresponding to the service it is interested in receiving; or, The first activation module is used to receive the activated direct link SLBWP index indicated by the base station through Radio Resource Control (RRC) signaling; or, The second activation module is used to receive the activation SL BWP index indicated by the base station through downlink control information (DCI); or, The second receiving module is configured to receive at least one of the BWP information or indexes sent or received by the SL contained in the PC5 signaling; or, The third receiving module is used to receive the active or switched SL BWP index contained in the SCI; or, The fourth receiving module is used to receive the inactive timer configuration sent by the base station, wherein when the inactive timer expires, the terminal returns to the unicast initial Sidelink BWP.

27. The apparatus according to claim 19, characterized in that, Includes at least one of the following: For unpaired spectrum, the Sidelink BWP and the paging and system information SI reuse the same Uu BWP; For scenarios where Sidelink uses Uu interface UL resources, configure the same Sidelink BWP and uplink UL BWP, or configure the Sidelink BWP and UL BWP to overlap in the frequency domain; For scenarios where Sidelink uses a dedicated PC5 carrier, the Sidelink BWP and the Uu interface BWP are configured independently.

28. The apparatus according to claim 19, characterized in that, The device further includes: The fifth receiving module is used to receive at least one of the Sidelink bearer channel configuration information and logical channel configuration information sent by the base station.

29. The apparatus according to claim 19, characterized in that, The device further includes: The second sending module is used to send scheduling requests (SRs) for Sidelink resources.

30. The apparatus according to claim 29, characterized in that, The device further includes: The sixth receiving module is configured to receive SR configuration information in at least one of the following ways before the second sending module sends the SR requesting Sidelink resources: Receive the mapping information between Sidelink BWP resources and SR resources configured by the base station; or, Receive SR configuration sent by the base station specifically for requesting Sidelink communication resources or discovering resources; or, The system reserved logical channel identifier (LCID) value indicates at least one of the requested Sidelink discovery resources and communication resources; or, The mapping relationship between V2X frequency points and SR resources received from the base station.

31. The apparatus according to claim 19, characterized in that, The device further includes: The third transmission module is used to send a Sidelink Buffer Status Report (BSR) to the base station, wherein the Sidelink BSR includes a subcarrier spacing index or an SL BWP ID.

32. The apparatus according to claim 19, characterized in that, The device further includes: The sixth receiving module is used to receive Sidelink Grant Downlink Control Information (grant DCI) sent by the base station, wherein the Sidelink grant DCI includes the sidelink BWP identifier or index corresponding to the resource.

33. The apparatus according to claim 32, characterized in that, The device further includes: The determining module is used to determine the sidelink BWP corresponding to the sidelink grant after the sixth receiving module receives the Sidelink Grant DCI sent by the base station; The scheduling module is used to schedule the data of the logical channel corresponding to any one of the following: subcarrier spacing, target identifier ID, PPPP, 5QI, QFI, PDB, and priority information, to assemble it into a Media Access Control Protocol Data Unit (MAC PDU) and transmit it via the Sidelink, based on any one of the following: subcarrier spacing, target identifier, PPPP, 5QI, QFI, PDB, and priority information.

34. The apparatus according to claim 19, characterized in that, The device further includes: The fourth transmission module is used to send Sidelink V2X Semi-Persistent Scheduling (SPS) auxiliary information to the base station; The seventh receiving module is used to receive the Sidelink V2X SPS configuration sent by the base station.

35. The apparatus according to claim 34, characterized in that, The Sidelink V2X SPS assistance information includes at least one of the following: SPS type indication, duration, 5QI, QFI, PDB, delay, criticality, priority, available subcarrier spacing.

36. The apparatus according to claim 34, characterized in that, The Sidelink V2X SPS configuration includes at least one of the following: SPS period, offset, Sidelink BWP identifier or index corresponding to SPS resource, frequency domain resource location and size, validity period.

37. A storage medium, characterized in that, The storage medium stores a computer program, wherein the computer program is configured to execute the method described in any one of claims 1 to 18 when it is run.

38. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to run the computer program to perform the method as described in any one of claims 1 to 18.

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