WO2020244457A1 - 信息的传输方法、装置、存储介质及电子装置 - Google Patents

信息的传输方法、装置、存储介质及电子装置 Download PDF

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Publication number
WO2020244457A1
WO2020244457A1 PCT/CN2020/093249 CN2020093249W WO2020244457A1 WO 2020244457 A1 WO2020244457 A1 WO 2020244457A1 CN 2020093249 W CN2020093249 W CN 2020093249W WO 2020244457 A1 WO2020244457 A1 WO 2020244457A1
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WIPO (PCT)
Prior art keywords
sending
indication information
psfch
message
resource
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PCT/CN2020/093249
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English (en)
French (fr)
Inventor
许辉
卢忱
王凤伟
赵祥模
惠飞
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US17/615,692 priority Critical patent/US20220239446A1/en
Priority to EP20819490.2A priority patent/EP3965352A4/en
Publication of WO2020244457A1 publication Critical patent/WO2020244457A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/161—Decentralised systems, e.g. inter-vehicle communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]

Definitions

  • the present disclosure relates to but is not limited to the field of communications.
  • the technology to improve vehicle safety is mainly divided into passive safety technology and active safety technology.
  • Passive safety technology is used to protect people and objects inside and outside the vehicle after an accident;
  • active safety technology is used to prevent and reduce vehicle accidents and avoid personal injury;
  • active safety technology is the focus of modern vehicle safety technology development And trends.
  • the communication-based collision warning system uses advanced wireless communication technology and a new generation of information processing technology to realize real-time information interaction between cars, cars and roadside infrastructure, and inform each other of the current status (including the position and speed of the vehicle).
  • Acceleration, driving path) and learned road environment information collaboratively perceive road hazards, provide a variety of collision warning information in time, and prevent road traffic safety accidents. This has become a new way of thinking about road traffic safety problems in various countries. .
  • a method for transmitting information including: determining indication information for indicating whether a user equipment (UE) at a receiving end successfully receives a vehicle to everything (V2X) message, and The sending mode of the indication information; determining a Physical Sidelink Feedback Channel (PSFCH) resource for sending the indication information; and sending the indication information on the PSFCH resource according to the sending mode.
  • UE user equipment
  • V2X vehicle to everything
  • PSFCH Physical Sidelink Feedback Channel
  • a method for transmitting information including: determining a PSFCH resource; and sending the PSFCH resource to a receiving end UE for receiving a V2X message to indicate that the receiving end UE is
  • the indication information is sent on the PSFCH resource, where the indication information is used to indicate whether the receiving end UE successfully receives the V2X message.
  • an information transmission device including: a first determining module, configured to determine indication information for indicating whether the receiving end UE successfully receives the V2X message and the sending of the indication information
  • the second determining module is used to determine the PSFCH resource used to send the indication information
  • the first sending module is used to send the indication information on the PSFCH resource according to the sending mode.
  • a device for transmitting information including: a third determining module, configured to determine PSFCH resources; and a second transmitting module, configured to send the PSFCH resources to the The receiving end UE of the V2X message instructs the receiving end UE to send indication information on the PSFCH resource, where the indication information is used to indicate whether the receiving end UE successfully receives the V2X message.
  • a storage medium in which a computer program is stored, wherein, when the computer program is executed by a processor, the processor executes the information according to the present disclosure. Transmission method.
  • an electronic device including a memory and a processor, the memory stores a computer program, and the processor executes the transmission of information according to the present disclosure when the computer program is running method.
  • FIG. 1 is a schematic diagram of V2X in the related art
  • Figure 2 is a system architecture diagram for sending V2X services through a PC5 interface in related technologies
  • Fig. 3 is a flowchart of a method for transmitting information according to an embodiment of the present disclosure
  • Fig. 4 is a flowchart of another information transmission method according to an embodiment of the present disclosure.
  • Fig. 5 is a flowchart of a method for transmitting PSFCH resources in a unicast scenario according to a specific embodiment of the present disclosure
  • Fig. 6 is a flowchart of a method for transmitting PSFCH resources in a multicast scenario according to a specific embodiment of the present disclosure
  • FIG. 7 is a flowchart of a method for configuring PSFCH resources during mode 1 transmission according to a specific embodiment of the present disclosure
  • FIG. 8 is a flowchart of a method for determining PSFCH resources during mode 2 transmission according to a specific embodiment of the present disclosure
  • FIG. 9 is a flowchart of a method for a receiving end UE to set PSFCH content according to a specific embodiment of the present disclosure.
  • Fig. 10 is a flowchart of a method for setting a PSFCH time window according to a specific embodiment of the present disclosure
  • FIG. 11 is a structural diagram of a system for transmitting response signals according to a specific embodiment of the present disclosure.
  • Fig. 12 is a structural block diagram of an information transmission device according to an embodiment of the present disclosure.
  • Fig. 13 is a structural block diagram of another information transmission device according to an embodiment of the present disclosure.
  • FIG. 14 is a hardware structure block diagram of a mobile terminal that executes a method for transmitting information according to an embodiment of the present disclosure.
  • V2X refers to the provision of vehicle information through sensors, on-board terminals and electronic tags mounted on the vehicle, and the use of various communication technologies to achieve vehicle-to-vehicle (V2V), vehicle to Pedestrian (V2P), vehicle-to-vehicle Road (Infrastructure) (Vehicle to Infrastructure, V2I) interconnection, and effective use of information extraction and sharing on the information network platform, effective management and control of vehicles and provision of comprehensive services.
  • V2V vehicle-to-vehicle
  • V2P vehicle to Pedestrian
  • Infrastructure Vehicle-to-vehicle Road
  • V2I Vehicle to Infrastructure
  • Figure 1 shows a schematic diagram of V2X.
  • LTE Long Term Evolution
  • 5G NR New Radio
  • the Road Side Unit can receive vehicle requests to ensure that the vehicle is connected to the Internet and has the function of a gateway; in addition, the RSU also has the functions of data calculation, storage, and forwarding.
  • DSRC Dedicated Short Range Communication
  • V2X cellular network V2X
  • IEEE 802.11P is responsible for the physical layer and medium access control MAC (Medium Access Control) technology
  • IEEE 1609 is responsible for upper-layer specifications.
  • V2X technology based on cellular network 5G NR has just begun to be discussed, and there is no standard yet.
  • the receiving end UE is used to send indication information to the sending end UE, and the indication information is used to indicate whether the receiving end UE correctly receives and decodes the V2X message.
  • the sender UE can perform the operation of retransmitting the V2X message.
  • V2X may be implemented through the PC5 interface or the Uu interface.
  • the PC5 interface refers to the air interface from Device to Device (D2D)
  • the Uu interface refers to the air interface from User Equipment (UE) to the base station (gNB).
  • D2D Device to Device
  • UE User Equipment
  • gNB base station
  • NR V2X supports unicast, groupcast and broadcast transmissions. All three transmissions can be implemented within coverage, partial coverage, or outside coverage.
  • NR V2X transmission includes modes mode1 and mode2. Mode1 means that the gNB configures PC5 resources for transmitting V2X services, and mode2 means that the UE independently selects PC5 resources for transmitting V2X services.
  • NR V2X In NR V2X, the highest reliability requirement is 99.999%, and the minimum delay requirement is 3 ms.
  • NR V2X uses retransmission on the PC5 interface to solve the reliability problem.
  • the receiving end UE In order to achieve transmission, the receiving end UE is used to send a response signal to the sending end UE.
  • the response signal is used to indicate whether the V2X message is correctly received and decoded. According to the indication of the response signal, the sending end can retransmit the V2X message.
  • a dedicated physical channel is designed, that is, the physical sidelink feedback channel PSFCH (Physical Sidelink Feedback CHannel).
  • PSFCH Physical Sidelink Feedback CHannel
  • V-UE refers to Vehicle-UE
  • P-UE refers to Pedestrian-UE
  • PC5 and Sidelink have the same meaning, and both are used to indicate an air interface link between UEs.
  • Hybrid Automatic Repeat reQuest (HARQ) is used to improve the reliability of V2X services, but
  • the implementation of the PSFCH has not yet been determined.
  • the content of the PSFCH, the location of the transmission resource of the PSFCH, and the transmission time relationship between the PSFCH and the V2X service have not yet been determined. The following will describe how to implement the above processing in conjunction with embodiments.
  • the methods in the embodiments of the present disclosure can be applied to V2X services, Wearables services, Machine Type Communication (MTC), Public Safety (PS) communication, Internet of Things (IoT), UE-to-Network relay, etc.
  • MTC Machine Type Communication
  • PS Public Safety
  • IoT Internet of Things
  • UE-to-Network relay etc.
  • FIG. 14 is a hardware structural block diagram of a mobile terminal that executes the method for transmitting information according to an embodiment of the present disclosure.
  • the mobile terminal 10 may include one or more (only one is shown in FIG. 14) processor 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA. ) And the memory 104 for storing data.
  • the mobile terminal 10 may further include a transmission device 106 and an input/output device 108 for communication functions.
  • FIG. 14 is only for illustration, and does not limit the structure of the mobile terminal.
  • the mobile terminal 10 may also include more or fewer components than those shown in FIG. 14, or have a different configuration from that shown in FIG.
  • the memory 104 may be used to store computer programs, for example, software programs and modules of application software, such as the computer programs corresponding to the information transmission method in the embodiments of the present disclosure.
  • the processor 102 executes the computer programs stored in the memory 104 by running Various functional applications and data processing can realize the above methods.
  • the memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory.
  • the memory 104 may further include a memory remotely provided with respect to the processor 102, and these remote memories may be connected to the mobile terminal 10 via a network. Examples of networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the transmission device 106 is used to receive or send data via a network.
  • the network may include a wireless network provided by the communication provider of the mobile terminal 10.
  • the transmission device 106 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet in a wireless manner.
  • RF radio frequency
  • FIG. 3 is a flowchart of a method for transmitting information according to an embodiment of the present disclosure.
  • a method for transmitting information that can run on the above-mentioned mobile terminal 10 is provided.
  • the process includes the following steps S302 to S306.
  • step S302 the indication information used to indicate whether the receiving end UE successfully receives the V2X message and the sending mode of the indication information are determined.
  • step S304 the PSFCH resource used to send the indication information is determined.
  • step S306 the indication information is sent on the PSFCH resource according to the sending mode.
  • the subject performing the above operations may be the receiving end UE.
  • the receiving UE and the subsequent sending UE may include at least one of the following: Onboard Unit (OBU), Road Side Unit (RSU), User Equipment (User Equipment) Equipment, UE), V-UE, P-UE, Wearables, UE-to-network relay, Internet of Things, IoT/Manual Toll Collection, MTC) terminal.
  • OBU Onboard Unit
  • RSU Road Side Unit
  • User Equipment User Equipment
  • UE User Equipment
  • V-UE User Equipment
  • P-UE Personal User Equipment
  • Wearables UE-to-network relay
  • Internet of Things IoT/Manual Toll Collection, MTC
  • Step S302 and step S304 are executed in no inevitable sequence. In practical applications, step S302 may be executed first, or step S304 may be executed first, or step S302 and step S304 may be executed simultaneously.
  • the indication information can be sent on the PSFCH resource according to the transmission mode.
  • the design of the response signal guarantees the requirement for PSFCH signal transmission during V2X service transmission, improves the reliability of the V2X service, and effectively solves the problem of how to transmit indication information in related technologies. Ask the question of a clear plan.
  • the step of determining the indication information used to indicate whether the receiving end UE successfully receives the V2X message and the sending mode of the indication information includes: determining the decoding status of the V2X, the V2X Transmission mode and PC5 feedback status; and based on the decoding status of the V2X, the transmission mode of the V2X, and the PC5 feedback status to determine the indication information used to indicate whether the receiving end UE successfully receives the V2X message and the transmission mode of the indication information .
  • the V2X service can be transmitted in mode1 or mode2, and the receiving end UE can configure the content of the PSFCH (that is, configure the indication information and the transmission mode of the indication information) according to the following conditions: received V2X data, transmission mode and PC5 feedback status, and can perform at least one of the following processing to.
  • Process 1 Determining the indication information for indicating whether the receiving end UE successfully receives the V2X message based on the decoding status of the V2X, including: determining that the indication information is the confirmation Ack response when the decoding status of the V2X is determined to be the correct decoding And when it is determined that the decoding status of the V2X is incorrectly decoded, determining that the indication information is a non-acknowledged Nack response. That is, if the received V2X data can be decoded correctly, set the Ack response, otherwise set the Nack response.
  • Processing 2 Determining the transmission mode of the indication information for indicating whether the receiving end UE successfully receives the V2X message based on the V2X transmission mode, including: determining the indication information when it is determined that the V2X transmission mode is unicast transmission
  • the sending method is that when the indication information is an Ack response, the Ack response is sent to the sending end UE, and when the indication information is a Nack response, the Nack response is sent to the sending end UE And when it is determined that the transmission mode of the V2X is multicast transmission, only when the indication information is a Nack response, the Nack should be sent to the sending end UE.
  • the process of determining the transmission mode of the indication information for indicating whether the receiving end UE successfully receives the V2X message based on the V2X transmission mode may include: determining the V2X transmission mode In the case of multicast transmission, it is determined that the sending mode of the indication information is when the indication information is an Ack response, sending the Ack response to the sending end UE, and when the indication information is a Nack response, sending The Nack response is sent to the sending end UE.
  • Processing 3 Determine the sending mode of the indication information for indicating whether the receiving end UE successfully receives the V2X message based on the PC5 feedback state, including: when the PC5 feedback state is active, performing a determination to indicate whether the receiving end UE The sending mode of the information indicating that the V2X message is successfully received.
  • the PC5 feedback status includes activated and inactive.
  • the PSFCH content is set when the PC5 feedback is activated, and the PSFCH content is not set when the PC5 is not activated.
  • the step of sending the indication information on the PSFCH resource according to the sending mode includes: sending the indication information on the PSFCH resource according to the sending mode and the following At least one piece of information: a process identifier used to indicate the sequence of transmitting the V2X message using the PC5 interface; an identifier of the sender UE used to send the V2X message; and an identifier of the receiver UE.
  • the PSFCH content can include the transmission process identifier, which is used to indicate the order in which the PC5 transmits the V2X service; in order to distinguish between different senders and receivers, the PSFCH content can be It contains the source ID and the destination ID.
  • the target ID is the multicast group ID.
  • the indication information and the aforementioned process ID, source ID, and destination ID can jointly constitute PSFCH content, and the PSFCH content that appears in the subsequent embodiments can include indication information, process ID, and source ID. And at least one of the destination identification.
  • the receiving end UE may set the PSFCH content according to the indication information of the gNB, or independently set the PSFCH content.
  • the step of sending the indication information on the PSFCH resource according to the sending mode includes: configuring a sending timer of the indication information, and before the timer expires And sending the indication information when the PSFCH resource exists.
  • the step of determining the PSFCH resource used to send the indication information includes at least one of the following: acquiring the PSFCH resource indicated by the sender UE for sending the V2X message; acquiring PSFCH resources configured by the base station; PSFCH resources are selected from the resource pool broadcast by the 5G base station gNB; and PSFCH resources are selected from the pre-configured resource pool.
  • the sending end UE may indicate the PSFCH resource location information to the receiving end UE, or the receiving end UE may obtain the PSFCH resource location through a system broadcast message or a pre-configured resource pool. For the latter method, the receiving end UE may notify the transmitting end UE of the acquired PSFCH resource location information.
  • the PSFCH resource can also be configured by the eNB.
  • the PSFCH resources are the same frequency domain and code domain resources configured at the same time interval, and the PSFCH resources and the resources of the V2X service corresponding to the V2X message are located in the same resource pool.
  • the step of sending the indication information on the PSFCH resource according to the sending mode includes: judging whether the PC5 feedback state is an active state; after determining that the PC5 feedback state is an active state In the state, send the indication information on the PSFCH resource in the transmission mode; and when it is determined that the PC5 feedback state is in the inactive state, do not perform the transmission of the indication information on the PSFCH resource in the transmission mode Indicates the processing of information.
  • whether the receiving end UE performs transmission through PSFCH can be determined by whether the PC5 feedback state is the active state: when the PC5 feedback state is the active state When the receiving end UE determines to perform transmission through the PSFCH, otherwise, the transmission is not performed through the PSFCH.
  • the specific steps of performing transmission through PSFCH include: 1) PC5 feedback activation; 2) informing the receiving end UE; 3) receiving end UE setting PSFCH content; 4) receiving end UE acquiring PSFCH resources; 5) receiving The end UE performs transmission through the PSFCH.
  • the method further includes: determining whether the PC5 feedback is activated by at least one of the following methods: determining whether the PC5 feedback notified by the PC5 by the sending end UE for sending the V2X message is Activation information; receiving the first broadcast message from the gNB, determining whether the PC5 feedback is activated information carried in the first broadcast message; and determining whether the PC5 feedback is activated information through the PSFCH resource pool status.
  • determining whether the PC5 feedback is activated by the PSFCH resource pool status if the PSFCH resource pool is empty, it means that the PC5 feedback is not activated; otherwise, it means that the PC5 feedback is activated.
  • the step of sending the indication information on the PSFCH resource according to the sending mode includes: determining the time interval for sending the V2X message and sending the indication information; and The time interval sends the indication information on the PSFCH resource according to the sending manner.
  • the step of determining the time interval for sending the V2X message and sending the indication information includes: determining the pre-configured time interval; or receiving a second broadcast message from a gNB, and obtaining the second broadcast The time interval carried in the message.
  • the time interval between the response signal (ie, indication information) and the corresponding V2X service data (ie, V2X message) can be configured, that is, the sending end UE is After sending the V2X service data, it waits for a period of time before detecting the receiving response signal.
  • the time interval may be configured by the gNB and sent through a broadcast message, or may be pre-configured and stored in the UE (including the sending UE and/or the receiving UE).
  • the step of sending the indication information on the PSFCH resource according to the sending manner according to the time interval includes: sending the indication information on the PSFCH resource at least twice within the time interval. Send the instruction information in a way.
  • the receiving end UE sends the set PSFCH content (that is, indication information).
  • the time window (or timer) for PSFCH transmission needs to be set, that is, after receiving The set PSFCH content is sent within a certain period of time after the V2X service (that is, the V2X message).
  • the PSFCH content can be sent multiple times within the time window.
  • the PSFCH time window may be configured or pre-configured by the gNB, and obtained by all UEs participating in the V2X response process.
  • the PSFCH resources include: time domain resources, frequency domain resources, and code domain resources.
  • the PSFCH resource includes at least one of the following: the time domain resource is a time domain resource configured by a base station or a sender UE for sending the V2X message;
  • the frequency domain resource includes at least one of the following One: frequency domain resources consistent with the frequency domain resources of the service corresponding to the V2X message and frequency domain resources adjacent to the frequency domain resources of the service corresponding to the V2X message;
  • the code domain resources include at least one of the following One: The code domain resources allocated by the gNB and the pre-configured code domain resources.
  • the time domain resource (or called the time domain location) can be fixedly configured, and can be a specific symbol after sending V2X service data, such as the last symbol in a time slot used to transmit V2X service, and is located in the corresponding After the V2X service data;
  • the frequency domain resource (or frequency domain position) can be the frequency domain range used for the V2X service (that is, all resource blocks (Resource Block, RB) used for the V2X service), or the corresponding V2X
  • the frequency domain position of the service is the same (that is, it occupies the same RB as the corresponding V2X service), or is adjacent to the frequency domain position of the corresponding V2X service;
  • the code domain resources can be code domain resources allocated by gNB or pre-configured code domain resources, Code domain resources refer to the codewords used by PSFCH, including channel coding and scrambling codes.
  • PSFCH channel coding can use the same coding as the Physical Sidelink Control Channel (PSCCH), such as polar code, if PSFCH contains less content, so other simplified codes can be used, such as repetition code (1bit), simplex code (2bits), RM (Reed Muller) (3-11bits), and the scrambling code can be based on the purpose (destination UE or multicast).
  • the specific code domain resource is configured by the gNB or pre-configured in the UE. In order to facilitate detection, the PSFCH needs to be scrambled, and a specific scrambling code identified by the receiving end UE can be used to scramble the PSFCH.
  • the PSFCH uses the same Cyclic Prefix (CP) and Sub-Carrier Space (SCS) as the corresponding V2X service.
  • the PSFCH resource is used to transmit PSFCH content, and the PSFCH resource is a dedicated resource and is not shared with the PSCCH/Physical Sidelink Share Channel (PSSCH) resource pool.
  • PSSCH Physical Sidelink Share Channel
  • PC5 communication includes same frequency or different frequency.
  • the same frequency refers to the shared frequency of Uu and PC5 communication
  • the different frequency refers to the dedicated frequency of the Intelligent Transport System (ITS) for PC5 communication, such as the 5.9GHz V2X frequency.
  • ITS Intelligent Transport System
  • the PC5 refers to the interface between UEs, and other names (such as Sidelink) may also be used.
  • the PC5 interface can adopt Prose technology of licensed spectrum or unlicensed spectrum.
  • FIG. 4 is a flowchart of another method for transmitting information according to an embodiment of the present disclosure.
  • a method for transmitting information that can be run on the mobile terminal 10 is provided.
  • the flow It includes the following steps S402 to S404.
  • step S402 PSFCH resources are determined.
  • step S404 the PSFCH resource is sent to the receiving end UE for receiving the V2X message to instruct the receiving end UE to send indication information on the PSFCH resource, where the indication information is used to indicate the receiving Whether the end UE successfully receives the V2X message.
  • the subject performing the foregoing operations may be the sender UE for sending the V2X message.
  • the design for the V2X response signal ie, the indication information
  • the demand for PSFCH signal transmission improves the reliability of the V2X service, and effectively solves the problem of how to transmit instruction information in related technologies and does not propose a clear solution.
  • the method further includes: determining whether the PC5 feedback is activated information; and notifying the receiving end UE of the information whether the PC5 feedback is activated through the PC5.
  • the step of determining the PSFCH resource includes: determining the transmission mode of the sending end UE for sending the V2X message; and determining the transmission mode corresponding to the transmission mode.
  • the PSFCH resource includes: determining the transmission mode of the sending end UE for sending the V2X message; and determining the transmission mode corresponding to the transmission mode.
  • the step of determining the PSFCH resource in a determining manner corresponding to the transmission mode includes at least one of the following: when the sending end UE is in mode mode1, requesting the PSFCH resource from the gNB, and acquiring the PSFCH resource PSFCH resources configured by the gNB; and when the sending end UE is in mode2, PSFCH resources are selected from the PSFCH resource pool.
  • the PSFCH resources include: time domain resources, frequency domain resources, and code domain resources.
  • the PSFCH resource includes at least one of the following: the time domain resource is a time domain resource configured by a base station or a sending end UE, that is, the interval time with the V2X message; the frequency domain The resource includes at least one of the following: a frequency domain resource consistent with the frequency domain resource of the service corresponding to the V2X message and a frequency domain resource adjacent to the frequency domain resource of the service corresponding to the V2X message; the code domain The resources include at least one of the following: code domain resources allocated by the gNB and pre-configured code domain resources.
  • FIG. 5 is a schematic flowchart of a method provided according to an embodiment of the present disclosure. This embodiment provides a method for sending PSFCH content for a unicast scenario. Please refer to FIG. 5, the method includes steps 502 to 508.
  • step 502 the UE (ie, the sending end UE) transmits the V2X service data (ie, the V2X message) through PC5 unicast.
  • the UE first obtains the transmission resources, for example, through gNB (mode1) or autonomous selection (mode2).
  • the UE may obtain retransmission resources while obtaining initial transmission resources.
  • the UE is the sending end UE, establishes a unicast link with the receiving end UE, sends V2X service resource indication information to the receiving end UE, and sends V2X service data on the resource. If the sending end UE has obtained the retransmission resource, the receiving end UE is indicated to the retransmission resource and the number of retransmissions.
  • step 504 the receiving end UE determines whether to send a response signal, and if it sends a response signal, then go to step 506; otherwise, go to step 510.
  • the receiving end UE determines whether to send a response signal (that is, an indication signal) according to the PC5 feedback activation status, and if the PC5 feedback is activated, the response signal is sent; otherwise, the response signal is not sent.
  • a response signal that is, an indication signal
  • the PC5 feedback activation status can be obtained in one of the following ways: the gNB is indicated by a broadcast message; the sending UE is indicated by the PC5 signaling.
  • step 506 the receiving end UE reports response information.
  • the PSFCH resource can be requested by the sending end UE to the gNB and the resource location can be notified to the receiving end UE, or the sending end UE can independently select and inform the receiving end UE of the selected PSFCH resource location.
  • the receiving end UE receives the V2X data according to the indication information of the sending end UE, and if the UE can decode it correctly, it reports an "positive” response, otherwise it reports a "negative” response.
  • the report is sent through the PSFCH channel on the PC5 interface.
  • the response signal further includes one of the following: transmission process identification, destination identification, and source identification.
  • the receiving end UE Before sending the response signal, the receiving end UE first obtains PSFCH resources.
  • step 508 the sender UE determines whether to retransmit according to the response signal.
  • the sending end UE If the sending end UE receives the positive response, it continues to send new V2X data. Before sending the new V2X data, the sending end UE requests new V2X data sending resources. If the sending end UE has acquired the retransmission resources, the UE sends indication information for releasing the retransmission resources, and the indication information can be sent to gNB (mode1) or broadcast through PC5;
  • the sending end UE If the sending end UE receives a negative response, it retransmits the V2X data through the PC5 interface. If the sending end UE has obtained the PC5 retransmission resource, it retransmits the V2X data on the retransmission resource; otherwise, the UE first obtains the retransmission resource, for example, through gNB configuration (mode1) or the UE independently selects the retransmission resource .
  • mode1 gNB configuration
  • step 510 the receiving end UE does not send a response signal.
  • FIG. 6 is a schematic flowchart of a method provided according to an embodiment of the present disclosure. This embodiment provides a method for sending PSFCH content in a multicast scenario. Please refer to FIG. 6. The method includes steps 602 to 608.
  • step 602 the sender UE uses multicast to send V2X service data.
  • the sending end UE simultaneously multicasts and sends V2X service data to multiple receiving end UEs.
  • the multicast is similar to broadcast (also called “multicast"). Multiple receivers join a multicast group, and UE at the sender sends V2X service data on the multicast common channel. Only those who have joined the multicast group The UE can receive the corresponding V2X service. Similar to unicast retransmission, the sender UE can obtain multicast retransmission resources at the same time when acquiring multicast initial transmission resources.
  • step 604 the receiving end UE determines whether to send a response signal, and if a response signal is sent, then go to step 606; otherwise, go to step 610.
  • the receiving end UE determines whether to send a response signal according to the PC5 feedback activation status, and if the PC5 feedback is activated, the response signal is sent; otherwise, the response signal is not sent.
  • step 606 the receiving end UE sends a response signal.
  • the number of the receiving end UE is more than one, considering that the same V2X data is sent by multicast, and as long as one receiving end UE sends a negative response, the sending end UE needs to retransmit the V2X data.
  • the number of Nack signals is less than the number of Ack signals, and only the Nack response signal can be sent, that is, the UE that correctly receives the V2X data may not send the response signal.
  • the response signal further includes one of the following: a transmission process identifier, a destination group identifier, and a source identifier.
  • the UE Before the UE sends a response, it first needs to acquire PSFCH resources.
  • step 608 the sender UE uses multicast to retransmit the V2X service data.
  • the receiving of the negative response signal by the sending end UE indicates that the receiving end UE has not received the V2X service correctly. As long as the sending end UE receives a negative response signal, it can stop detecting and receiving other response signals.
  • the sending end UE If the sending end UE has obtained the retransmission resource, the V2X service data is retransmitted on the retransmission resource; otherwise, the sending end UE obtains the retransmission resource, and indicates the retransmission resource to the receiving end UE and sends the V2X service data.
  • step 610 the receiving end UE does not send a response signal.
  • the PC5 feedback is not activated, or the receiving end UE correctly decodes the received V2X data and does not send a response signal.
  • FIG. 7 is a schematic flowchart of a method provided according to an embodiment of the present disclosure. This embodiment provides a method for configuring PSFCH resources during mode 1 transmission. Please refer to FIG. 7. The method includes steps 702 to 710.
  • step 702 gNB instructs to activate PC5 feedback.
  • the gNB determines to activate the PC5 feedback according to at least one of the following conditions: UE request, V2X service QoS, PC5 link status. For example, the UE requests PC5 feedback and/or V2X service reliability requirements are high and/or PC5 link quality is poor, and the gNB determines to activate PC5 feedback.
  • the gNB may use physical layer downlink control information (Downlink Control Information, DCI) signaling, media access control (Media Access Control, MAC) control element (CE) signaling, or radio resource control (Radio Resource Control, RRC) signaling to send the indication.
  • DCI Downlink Control Information
  • MAC Media Access Control
  • CE control element
  • RRC Radio Resource Control
  • step 704 the sender UE requests V2X resources from the gNB.
  • the UE at the sending end requests resources from the gNB through RRC signaling, and the gNB indicates resource information to the UE through RRC signaling.
  • the gNB can configure initial transmission and retransmission resources at the same time and notify the UE.
  • the V2X resources further include PSFCH resources.
  • step 706 the sending end UE sends V2X service data.
  • the sending end UE sends the resource location through the PSCCH, and sends V2X data on the resource through the PSSCH.
  • step 708 the receiving end UE obtains PSFCH resources.
  • the sending end UE requests PSFCH resources from the gNB, the gNB indicates the PSFCH resources to the sending end UE, and the sending end UE notifies the receiving end UE of the obtained resources.
  • the UE at the sending end may send PSFCH resource information when sending the V2X service in step 706, for example, indicated in the Sidelink Control Information (SCI), and sent through the PSCCH.
  • SCI Sidelink Control Information
  • the PSFCH resources include: time domain resources, frequency domain resources and code domain resources.
  • the time domain resource can be determined by configuration. For example, the last symbol in the V2X resource time slot is generally used to realize the transmission and reception conversion, because the V2X transmission module is half-duplex, that is, it cannot be transmitted and received at the same time, and the transmission and reception conversion takes a certain time to complete ;
  • Frequency domain resources can be all RBs of the above symbols used for V2X services, or occupy the same RBs as corresponding V2X services, or RBs adjacent to corresponding V2X services;
  • code domain resources can be configured or pre-configured by gNB for channel Encoding or scrambling.
  • step 710 the receiving end UE sends a response signal on the PSFCH.
  • the receiving end UE sends a response signal according to the received V2X service. If the V2X data is decoded correctly, it sends a positive Ack response signal; otherwise, it sends a negative Nack response signal.
  • FIG. 8 is a schematic flowchart of a method provided according to an embodiment of the present disclosure. This embodiment provides a method for determining PSFCH resources during mode 2 transmission. Please refer to FIG. 8. The method includes steps 802 to 810.
  • step 802 PC5 feedback activation.
  • the gNB determines to activate the PC5 feedback.
  • the sending end UE determines to activate the PC5 feedback, which is based on the V2X service QoS requirements And/or PC5 link status determines whether to activate PC5 feedback.
  • step 804 the sending end UE selects V2X resources.
  • the sending end UE selects PSFCH resources
  • the sending end UE selects the PSFCH resource in one of the following ways: 1) when the sending end UE is in coverage, select it from the resource pool broadcast by gNB; 2) when the sending end UE is out of coverage, preconfigured resources in the UE Choose from the pool.
  • the resource pool is a resource pool dedicated to PSFCH.
  • step 806 the sending end UE sends V2X data.
  • the sending end UE also sends the PSFCH resource at the same time, for example, the PSFCH resource is indicated through the SCI and sent through the PSCCH.
  • step 808 the receiving end UE obtains PSFCH resources.
  • the receiving end UE obtains the PSFCH resource in one of the following ways: 1) receiving the resource indication information of the sending end UE; 2) when the receiving end UE is in coverage, select the PSFCH resource from the resource pool broadcast by the gNB; 3) the receiving end When the UE is out of coverage, the PSFCH resource is selected from the pre-configured resources stored by the receiving end UE.
  • the PSFCH resources include: time domain resources, frequency domain resources and code domain resources.
  • the time domain resource can be determined by configuration, for example, the last symbol in the V2X resource slot, this symbol is generally used to realize the transmission and reception conversion, because the V2X transmission module is half-duplex, that is, the transmission and reception cannot be simultaneously transmitted, and the transmission and reception conversion takes a certain time to complete ;
  • Frequency domain resources can be all RBs of the above symbols used for V2X services, or occupy the same RBs as corresponding V2X services, or RBs adjacent to corresponding V2X services;
  • code domain resources can be configured or pre-configured by gNB for channel Encoding or scrambling.
  • step 810 the receiving end UE sends a response signal.
  • the receiving end UE obtains the PSFCH resource through the sending end UE, the PSFCH content is directly sent on the resource; if the receiving end UE selects the PSFCH resource by itself, the sending end UE is notified of the resource location and the PSFCH content is sent.
  • FIG. 9 is a schematic flowchart of a method provided according to an embodiment of the present disclosure. This embodiment provides a method for a receiving end UE to set PSFCH content. Please refer to FIG. 9. The method includes steps 902 to 914.
  • step 902 PC5 feedback activation.
  • step 802 It is similar to step 802 and will not be repeated here.
  • step 904 the sending end UE sends V2X data.
  • step 906 the receiving end UE determines whether it is unicast transmission, if it is unicast transmission, go to step 908; otherwise, go to step 910.
  • step 908 the receiving end UE sets and transmits the PSFCH content.
  • the UE If the UE can decode correctly, then report a positive Ack response, otherwise report a negative Nack response.
  • the report is sent through the PSFCH channel on the PC5 interface.
  • the response signal further includes one of the following: transmission process identification, destination identification, and source identification.
  • the transmission process identifier is used to distinguish the transmission process, because the response signal may be sent multiple times, and the transmission process for each response signal needs to be distinguished; the destination identifier and the source identifier are indicated by the layer 2 (layer 2) identifier.
  • the receiving end UE needs to obtain the resource location of the PSFCH before sending the PSFCH.
  • step 9010 the receiving end UE judges whether the V2X service is received correctly, and if the V2X service is received correctly, then go to step 9012; otherwise, go to step 9014.
  • the response signal may not be sent; otherwise, the response signal is sent.
  • step 9012 the receiving end UE does not send a response signal.
  • step 9014 the receiving end UE sends a response signal.
  • the response signal is a negative response.
  • the response signal further includes one of the following: a transmission process identifier, a destination identifier, and a source identifier.
  • the transmission process identifier is used to distinguish the transmission process, because the response signal may be sent multiple times, and the transmission process for each response signal needs to be distinguished; the destination identifier and the source identifier are indicated by the layer 2 (layer 2) identifier.
  • Fig. 10 is a schematic flowchart of a method provided according to an embodiment of the present disclosure. This embodiment provides a method for setting a PSFCH time window. Please refer to Fig. 10. The method includes steps 1002 to 1008.
  • step 1002 PC5 feedback is activated
  • the PC5 feedback status includes active or inactive. If the PC5 feedback has been activated, it can continue to be activated or deactivated; if the PC5 feedback is not activated, it can be activated or remain inactive. The activation is determined by the gNB (in coverage) or the sender UE (out of coverage).
  • step 1004 the receiving end UE obtains the PSFCH time window.
  • the PSFCH time window is set in one of the following ways: 1) gNB notifies multiple time window values through broadcast, the sending end UE selects a value and notifies the receiving end UE; 2) pre-configured in the UE, the sending end UE selects a value And notify the receiving end UE.
  • the sending UE can notify the receiving UE through SCI signaling, MAC CE signaling or RRC signaling.
  • the selection of the PSFCH time window needs to consider the delay requirements of the V2X service. For example, for the low-latency V2X service, the time window is relatively short.
  • step 1006 the receiving end UE sends the PSFCH within the time window.
  • the receiving end UE may send the PSFCH multiple times within the time window, and the PSFCH resources sent multiple times are determined before sending. Within a time window, the content of the PSFCH sent multiple times remains consistent. When the time window is exceeded, the receiving end UE no longer sends PSFCH. Assuming that the receiving end UE starts to send PSFCH content at t1, a timer T is started at the same time, and the length of the timer T is the time window value. For unicast transmission, if there is only one opportunity to send the PSFCH, the timer T is stopped after the PSFCH content is sent; otherwise, the PSFCH content is sent multiple times before the T expires.
  • the receiving end UE stops the timer T after sending a negative response. If there are multiple sending opportunities and resources, the negative response can be sent multiple times before the timer T expires.
  • step 1008 the sender UE receives the PSFCH content within the time window.
  • the sending end UE sends V2X data at t0
  • the receiving end UE starts to send PSFCH after t0+Tgap
  • Tgap is the configured interval for sending PSFCH content
  • the sending end UE starts timer T at t0+Tgap.
  • the length of T is the value of the configured time window. If the sending end UE receives the PSFCH content before t0+Tgap+T, the timer T is stopped.
  • the sender UE If the timer T expires and the PSFCH is not received, for unicast transmission, the sender UE considers that the transmission has failed, and retransmits or discards the corresponding V2X data (according to the delay requirements of V2X data); for multicast transmission, the sender UE considers Sent successfully.
  • the embodiment of the present disclosure provides a system for transmitting response signals. Please refer to FIG. 11.
  • the system includes a wireless access network device 1101 and a terminal 1102.
  • the wireless access network device 1101 includes a base station 11011.
  • the terminal 1102 includes a communication module 11021 and other modules 11022.
  • the communication module 11021 is configured to receive PSFCH resource information sent or pre-configured by the base station 11011 or other modules 11022, and receive PSFCH signals.
  • the communication module 11021 of the terminal 1102 is also used to determine the PSFCH time window, determine the PSFCH resource, and determine the PSFCH content.
  • the communication module 11021 of the terminal 1102 is also used to send PSFCH signals, send PSFCH resource indication information, and send PSFCH resource request information and time window information.
  • the other modules 11022 include: a power supply module, a radio frequency module, a baseband module, a display module, an audio/video module, a navigation module, a storage module, etc., which are used to implement functions related to V2X communication.
  • the base station 11011 is configured to send PSFCH resource configuration information and time window information to the terminal 1102, and receive PSFCH resource request information.
  • the terminal device configures the PSFCH content according to the data received on the PC5 interface, determines the sending position of the PSFCH content according to the gNB indication or the pre-configuration rule, and sends the PSFCH information at the position.
  • the access network device 1101 is a base station, and includes one of the following: eNB and gNB.
  • the access network device 1101 is mainly responsible for configuring PSFCH resources for the terminal 1102 and notifying the terminal 1102 of the PSFCH resources.
  • the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is Better implementation.
  • the technical solution of the present disclosure essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to enable a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the method described in each embodiment of the present disclosure.
  • an information transmission device is also provided, which is used to implement the above-mentioned embodiments and implementation manners, and those that have been described will not be repeated.
  • the term "module” can implement a combination of software and/or hardware with predetermined functions.
  • the devices described in the following embodiments are preferably implemented by software, hardware or a combination of software and hardware is also possible and conceived.
  • FIG. 12 is a structural block diagram of a device for transmitting information according to an embodiment of the present disclosure. As shown in FIG. 12, the device includes a first determining module 1202, a second determining module 1204, and a first sending module 1206.
  • the first determining module 1202 is configured to determine the indication information used to indicate whether the receiving end UE successfully receives the V2X message and the sending mode of the indication information.
  • the second determining module 1204 is configured to determine the PSFCH resource used to send the indication information.
  • the first sending module 1206 is configured to send the indication information on the PSFCH resource according to the sending mode.
  • the first determining module 1202 may determine the indication information for indicating whether the receiving end UE successfully receives the V2X message and the sending mode of the indication information by determining the decoding status of the V2X, The V2X transmission mode and the PC5 feedback status; and based on the V2X decoding status, the V2X transmission mode, and the PC5 feedback status, the indication information and the indication information used to indicate whether the receiving end UE successfully receives the V2X message is determined sending method.
  • the first determining module 1202 may determine the indication information for indicating whether the receiving end UE successfully receives the V2X message based on the decoding status of the V2X in the following manner: after determining that the decoding status of the V2X is correct When decoding, it is determined that the indication information is an acknowledgement Ack response; and when it is determined that the decoding state of the V2X is incorrectly decoded, it is determined that the indication information is a non-acknowledgement Nack response.
  • the first determining module 1202 may determine, based on the V2X transmission mode, the transmission mode of the indication information used to indicate whether the receiving end UE successfully receives the V2X message: after determining the V2X transmission
  • the mode is unicast transmission
  • it is determined that the sending mode of the indication information is when the indication information is an Ack response, sending the Ack response to the sending end UE, and when the indication information is a Nack response, Sending the Nack response to the sending end UE; and when it is determined that the transmission mode of the V2X is multicast transmission, only when the indication information is a Nack response, the Nack should be sent to the sending end UE.
  • the first determining module 1202 may determine, based on the PC5 feedback status, a sending method for indicating whether the receiving end UE successfully receives the V2X message: when the PC5 feedback status is active In the state, the sending method of determining the indication information used to indicate whether the receiving end UE successfully receives the V2X message is executed.
  • the first determining module 1202 may determine, based on the V2X transmission mode, the transmission mode of the indication information used to indicate whether the receiving end UE successfully receives the V2X message: after determining the V2X transmission
  • the sending method of the indication information is when the indication information is an Ack response, sending the Ack response to the sending end UE, and when the indication information is a Nack response, Send the Nack response to the sending end UE.
  • the first sending module 1206 may send the indication information on the PSFCH resource according to the sending mode in the following manner: sending the indication information on the PSFCH resource according to the sending mode And at least one of the following information: a process identifier used to indicate the sequence of transmitting the V2X message using the PC5 interface; an identifier of the sending end UE used to send the V2X message; and an identifier of the receiving end UE.
  • the first sending module 1206 may send the indication information on the PSFCH resource according to the sending mode in the following manner: configure a sending timer of the indication information, and set the indication information in the timer Sending the indication information before the timeout and when the PSFCH resource exists.
  • the second determining module 1204 may determine the physical side feedback channel PSFCH resource used to send the indication information in at least one of the following ways: acquiring the source UE at the sending end for sending the V2X message The indicated PSFCH resource; obtain the PSFCH resource configured by the base station; select the PSFCH resource from the resource pool broadcast by the 5G base station gNB; and select the PSFCH resource from the pre-configured resource pool.
  • the PSFCH resources are the same frequency domain and code domain resources configured at the same time interval, and the PSFCH resources and the resources of the V2X service corresponding to the V2X message are located in the same resource pool.
  • the first sending module 1206 may send the indication information on the PSFCH resource according to the sending mode in the following manner: determine whether the PC5 feedback status is an active state; and when determining the PC5 feedback status When it is in the active state, send the indication information on the PSFCH resource according to the transmission mode; and when it is determined that the PC5 feedback state is in the inactive state, do not perform transmission on the PSFCH resource according to the transmission mode The processing of the instruction information.
  • the apparatus determines whether the PC5 feedback is activated by at least one of the following methods: determining whether the PC5 feedback is activated by the sending end UE for sending the V2X message through the PC5 notified by the PC5 ; Receive the first broadcast message from the gNB, determine whether the PC5 feedback is activated information carried in the first broadcast message; and determine whether the PC5 feedback is activated information through the PSFCH resource pool status.
  • the first sending module 1206 may send the indication letter on the PSFCH resource in the sending manner in the following manner: determining the time interval for sending the V2X message and sending the indication information; And sending the indication information on the PSFCH resource according to the sending manner according to the time interval.
  • the first sending module 1206 may determine the time interval for sending the V2X message and sending the indication information by determining the pre-configured time interval; or receiving the second broadcast from the gNB Message to obtain the time interval carried in the second broadcast message.
  • the first sending module 1206 may send the indication information on the PSFCH resource according to the sending method at the time interval in the following manner: at least twice in the time interval in the time interval.
  • the indication information is sent on the PSFCH resource according to the sending mode.
  • the PSFCH resources include: time domain resources, frequency domain resources, and code domain resources.
  • the PSFCH resource includes at least one of the following: the time domain resource is a time domain resource configured by a base station or a sender UE for sending the V2X message;
  • the frequency domain resource includes at least one of the following One: frequency domain resources consistent with the frequency domain resources of the service corresponding to the V2X message and frequency domain resources adjacent to the frequency domain resources of the service corresponding to the V2X message;
  • the code domain resources include at least one of the following One: The code domain resources allocated by the gNB and the pre-configured code domain resources.
  • FIG. 13 is a structural block diagram of another information transmission device according to an embodiment of the present disclosure. As shown in FIG. 13, the device includes a third determining module 1302 and a second sending module 1304.
  • the third determining module 1302 is used to determine PSFCH resources.
  • the second sending module 1304 is configured to send the PSFCH resource to the receiving end UE for receiving V2X messages, so as to instruct the receiving end UE to send indication information on the PSFCH resource, where the indication information is used to indicate Whether the receiving end UE successfully receives the V2X message.
  • the device further determines whether the PC5 feedback is activated information, and informs the receiving end UE of the information whether the PC5 feedback is activated through the PC5.
  • the third determining module 1302 may determine the PSFCH resource in the following manner: determining the transmission mode of the sending end UE for sending the V2X message; and adopting a determination method corresponding to the transmission mode Determine the PSFCH resource.
  • the third determining module 1302 may determine the PSFCH resource in a determining manner corresponding to the transmission mode in at least one of the following ways: when the sending end UE is in the mode mode1, send a message to the gNB Request PSFCH resources, and obtain PSFCH resources configured by the gNB; and when the sending end UE is in mode2, select PSFCH resources from the PSFCH resource pool.
  • the PSFCH resources include: time domain resources, frequency domain resources, and code domain resources.
  • the PSFCH resource includes at least one of the following: the time domain resource is a time domain resource configured by a base station or a transmitting end UE; the frequency domain resource includes at least one of the following: and the V2X message Frequency domain resources with the same frequency domain resources of the corresponding services and frequency domain resources adjacent to the frequency domain resources of the service corresponding to the V2X message; the code domain resources include at least one of the following: code domain resources allocated by gNB And pre-configured code domain resources.
  • each of the above modules can be implemented by software or hardware.
  • it can be implemented in the following manner, but not limited to this: the above modules are all located in the same processor; or, the above modules are combined in any combination The forms are located in different processors.
  • the embodiments of the present disclosure also provide a storage medium in which a computer program is stored, and when the computer program is run by a processor, the processor executes the information transmission method according to the embodiments of the present disclosure.
  • the foregoing storage medium may include, but is not limited to: U disk, Read-Only Memory (Read-Only Memory, ROM for short), Random Access Memory (RAM for short), mobile hard disk, magnetic disk Various media that can store computer programs such as discs or optical discs.
  • the embodiments of the present disclosure also provide an electronic device, including a memory and a processor, the memory stores a computer program, and the processor executes the information transmission method according to each embodiment of the present disclosure when the computer program is running.
  • the above-mentioned electronic device may also include a transmission device and an input-output device, wherein the transmission device is connected to the aforementioned processor, and the input-output device is connected to the aforementioned processor.
  • the receiving end UE sets the PSFCH response content and obtains PSFCH resources, and the receiving end UE sends the response signal on the PSFCH, which realizes the design of the V2X response signal and ensures the unicast and multicast transmission in the V2X service At this time, the demand for PSFCH signal transmission improves the reliability of V2X services and ensures the effective use of PC5 resources.
  • modules or steps of the present disclosure can be implemented by a general computing device, and they can be concentrated on a single computing device or distributed in a network composed of multiple computing devices.
  • they can be implemented with program codes executable by the computing device, so that they can be stored in the storage device for execution by the computing device, and in some cases, can be executed in a different order than here.

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Abstract

本公开提供了一种信息的传输方法、装置、存储介质及电子装置。所述方法包括：确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式；确定用于发送所述指示信息的PSFCH资源；以及在所述PSFCH资源上按照所述发送方式发送所述指示信息。

Description

信息的传输方法、装置、存储介质及电子装置 技术领域
本公开涉及但不限于通信领域。
背景技术
随着经济社会高速发展，中国汽车保有量迅速增长，道路交通事故频繁发生，已成为近年来影响我国公众安全感的重要因素之一，道路交通安全问题已经成为影响社会和谐和改善民生的基本问题之一。中国迫切需要从技术、政策、教育等各方面改善交通安全，其中提升车辆安全设计是其中的重要组成部分。
提升车辆安全的技术主要分为被动安全技术和主动安全技术。被动安全技术用于在事故发生后，对车内、车外人员及物品的保护；主动安全技术用于防止和减少车辆发生事故，避免人员受到伤害；主动安全技术是现代车辆安全技术发展的重点和趋势。
基于通信的碰撞预警系统，通过利用先进的无线通信技术和新一代信息处理技术，实现车与车、车与路侧基础设施间的实时信息交互，告知彼此目前的状态(包括车辆的位置、速度、加速度、行驶路径)及获知的道路环境信息，协作感知道路危险状况，及时提供多种碰撞预警信息，防止道路交通安全事故的发生，成为当前各国试图解决道路交通安全问题的一种新的思路。
发明内容
根据本公开的一个实施例，提供了一种信息的传输方法，包括：确定用于指示接收端用户设备(User Equipment，UE)是否成功接收车联网(Vehicle to everything，V2X)消息的指示信息以及所述指示信息的发送方式；确定用于发送所述指示信息的物理边路反馈信道(Physical Sidelink Feedback Channel，PSFCH)资源；以及在所述PSFCH资源上按照所述发送方式发送所述指示信息。
根据本公开的另一个实施例，提供了一种信息的传输方法，包 括：确定PSFCH资源；以及将所述PSFCH资源发送给用于接收V2X消息的接收端UE，以指示所述接收端UE在所述PSFCH资源上发送指示信息，其中，所述指示信息用于指示所述接收端UE是否成功接收所述V2X消息。
根据本公开的另一个实施例，还提供了一种信息的传输装置，包括：第一确定模块，用于确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式；第二确定模块，用于确定用于发送所述指示信息的PSFCH资源；以及第一发送模块，用于在所述PSFCH资源上按照所述发送方式发送所述指示信息。
根据本公开的另一个实施例，还提供了一种信息的传输装置，包括：第三确定模块，用于确定PSFCH资源；以及第二发送模块，用于将所述PSFCH资源发送给用于接收V2X消息的接收端UE，以指示所述接收端UE在所述PSFCH资源上发送指示信息，其中，所述指示信息用于指示所述接收端UE是否成功接收所述V2X消息。
根据本公开的又一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被处理器运行时，使得所述处理器执行根据本公开的信息的传输方法。
根据本公开的又一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器运行所述计算机程序时执行根据本公开的信息的传输方法。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是相关技术中的V2X的示意图；
图2是相关技术中的通过PC5接口发送V2X业务的系统架构图；
图3是根据本公开实施例的信息的传输方法的流程图；
图4是根据本公开实施例的另一种信息的传输方法的流程图；
图5是根据本公开具体实施例的在单播场景中发送PSFCH资源 的方法流程图；
图6是根据本公开具体实施例的在多播场景中发送PSFCH资源的方法流程图；
图7是根据本公开具体实施例的在mode1传输时配置PSFCH资源的方法流程图；
图8是根据本公开具体实施例的在mode2传输时确定PSFCH资源的方法流程图；
图9是根据本公开具体实施例的接收端UE设置PSFCH内容的方法流程图；
图10是根据本公开具体实施例的设置PSFCH时间窗的方法流程图；
图11是根据本公开具体实施例的传输应答信号的系统结构图；
图12是根据本公开实施例的信息的传输装置的结构框图；
图13是根据本公开实施例的另一种信息的传输装置的结构框图；
以及
图14是本公开实施例的执行信息的传输方法的移动终端的硬件结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
V2X是指通过装载在车辆上的传感器、车载终端及电子标签提供车辆信息，采用各种通信技术实现车与车(Vehicle to Vehicle，V2V)、车与人(Vehicle to Pedestrian，V2P)、车与路(基础设施)(Vehicle to Infrastructure，V2I)互连互通，并在信息网络平台上对信息进行提取、共享等有效利用，对车辆进行有效的管控和提供综合服务。
图1示出了V2X的示意图。
近年来随着新的移动通信技术的发展，国际上出现了使用长期演进(Long Term Evolution，LTE)和5G NR(New Radio)技术来解决基于V2X通信应用的研究。
路边通信单元(Road Side Unit，RSU)可以接收车辆请求，保证车辆接入互联网，具有网关的功能；此外，RSU也具有数据运算、存储、转发的功能。
目前有两种V2X实现技术：专用短距离通信(Dedicated Short Range Communication，DSRC)和蜂窝网V2X。DSRC基于IEEE 802.11P和IEEE 1609系列标准，IEEE 802.11P负责物理层和媒体接入控制MAC(Medium Access Control)技术，IEEE 1609负责上层规范。基于蜂窝网5G NR的V2X技术刚开始讨论，还没有标准。
在相关技术中，通常采用重传来解决可靠性问题，为了实现传输，采用接收端UE发送指示信息到发送端UE，且指示信息用于指示接收端UE是否正确接收解码了V2X消息，根据指示信息，发送端UE可以执行重传V2X消息的操作。
但是对于如何传输上述指示信息，在相关技术中并未提出明确的方案。
在相关技术中，3GPP中涉及到的NR V2X技术包括：V2X可能通过PC5接口或Uu接口实现。PC5接口是指设备到设备(Device to Device，D2D)的空中接口，Uu接口是指用户设备(User Equipment，UE)到基站(gNB)的空中接口。
通过PC5接口发送V2X业务的系统架构如图2所示。
NR V2X支持单播(unicast)、组播(groupcast)和广播(broadcast)传输，所有三种传输都可在覆盖内、部分覆盖内或覆盖外实现。NR V2X传输包括模式mode1和mode2。mode1是指gNB配置传输V2X业务的PC5资源，mode2是指UE自主选择传输V2X业务的PC5资源。
在NR V2X中，最高的可靠性要求是99.999％，最小的延时要求为3ms，NR V2X在PC5接口采用重传来解决可靠性问题。为了实现传 输，采用接收端UE发送应答信号到发送端UE，应答信号用于指示是否正确接收解码V2X消息，根据应答信号指示，发送端可以重传V2X消息。为了传输应答信号，设计了专用的物理信道，即，物理边路反馈信道PSFCH(Physical Sidelink Feedback CHannel)。
为了便于描述，本公开实施例中V-UE是指Vehicle-UE，P-UE是指Pedestrian-UE，PC5和Sidelink具有相同的含义，都用于指示UE之间的空口链路。
在对现有技术的研究和实践过程中，发现存在以下问题：在3GPP正在研究的NR V2X课题中，混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)用于提高V2X业务的可靠性，但PSFCH的实现方案还未确定，例如，PSFCH的内容、PSFCH的发送资源位置、PSFCH与V2X业务的发送时间关系等都还没有确定。下面将结合实施例，对如何实现上述处理进行说明。
本公开实施例中的方法可以应用于V2X业务、可穿戴(Wearables)业务、机器类型通信MTC(Machine Type Communication)、公共安全(Public Safety，PS)通信、物联网(Internet of Things，IoT)、UE到网络中继(UE-to-Network relay)等。
本申请实施例中所提供的方法实施例可以在移动终端、计算机终端或者类似的运算装置中执行。以运行在移动终端上为例，图14是本公开实施例的执行信息的传输方法的移动终端的硬件结构框图。如图14所示，移动终端10可以包括一个或多个(图14中仅示出一个)处理器102(处理器102可以包括但不限于微处理器MCU或可编程逻辑器件FPGA等的处理装置)和用于存储数据的存储器104。可选地，移动终端10还可以包括用于通信功能的传输设备106以及输入输出设备108。本领域普通技术人员可以理解，图14所示的结构仅为示意，其并不对移动终端的结构造成限定。例如，移动终端10还可包括比图14中所示更多或者更少的组件，或者具有与图14所示不同的配置。
存储器104可用于存储计算机程序，例如，应用软件的软件程序以及模块，如本公开实施例中的信息的传输方法对应的计算机程序， 处理器102通过运行存储在存储器104内的计算机程序，从而执行各种功能应用以及数据处理，即实现上述方法。存储器104可包括高速随机存储器，还可包括非易失性存储器，如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器104可进一步包括相对于处理器102远程设置的存储器，这些远程存储器可以通过网络连接至移动终端10。网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置106用于经由一个网络接收或者发送数据。网络具体实例可包括移动终端10的通信供应商提供的无线网络。在一个实例中，传输装置106包括一个网络适配器(Network Interface Controller，NIC)，其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中，传输装置106可以为射频(Radio Frequency，RF)模块，其用于通过无线方式与互联网进行通讯。
图3是根据本公开实施例的信息的传输方法的流程图，在本实施例中提供了一种可以运行于上述移动终端10的信息的传输方法，如图3所示，该流程包括如下步骤S302至S306。
在步骤S302，确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式。
在步骤S304，确定用于发送所述指示信息的PSFCH资源。
在步骤S306，在所述PSFCH资源上按照所述发送方式发送所述指示信息。
执行上述操作的主体可以是接收端UE。在本公开实施例中，接收端UE以及后续出现的发送端UE均可以包括以下至少之一：车载单元(On board Unit，OBU)、路边单元(Road Side Unit，RSU)、用户设备(User Equipment，UE)、V-UE、P-UE、可穿戴设备(Wearables)、UE到网络中继(UE-to-network relay)、物联网/人工半自动收费车道(Internet of Things，IoT/Manual Toll Collection，MTC)终端。
步骤S302和步骤S304的执行没有必然的先后顺序，在实际应用中，可以先执行步骤S302，也可以先执行步骤S304，或者可以同 时执行步骤S302和步骤S304。
在上述实施例中，由于可以确定指示信息、指示信息的发送方式以及用于发送指示信息的PSFCH资源，进而可以在所述PSFCH资源上按照所述发送方式发送所述指示信息，实现了针对V2X应答信号(即，指示信息)的设计，保证了在V2X业务传输时，对于PSFCH信号发送的需求，提高了V2X业务的可靠性，有效解决了相关技术中存在的对于如何传输指示信息，并未提出明确的方案的问题。
在一实施例中，确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式的步骤(即，步骤S302)包括：确定所述V2X的解码状态、所述V2X的传输方式以及PC5反馈状态；以及基于所述V2X的解码状态、所述V2X的传输方式以及PC5反馈状态确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式。
在一实施例中，V2X业务可采用mode1或mode2传输，并且接收端UE可以根据以下条件配置PSFCH的内容(即，配置指示信息以及指示信息的发送方式)：收到的V2X数据、传输方式和PC5反馈状态，并且可以进行以下至少一项处理至。
处理一：基于所述V2X的解码状态确定用于指示接收端UE是否成功接收V2X消息的指示信息，包括：在确定所述V2X的解码状态为正确解码时，确定所述指示信息为确认Ack应答；以及在确定所述V2X的解码状态为未正确解码时，确定所述指示信息为非确认Nack应答。即，如果收到的V2X数据可以正确解码，则设置Ack应答，否则设置Nack应答。
处理二：基于所述V2X的传输方式确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式，包括：在确定所述V2X的传输方式为单播传输时，确定所述指示信息的发送方式为在所述指示信息为Ack应答时，将所述Ack应答发送给所述发送端UE，以及在所述指示信息为Nack应答时，将所述Nack应答发送给所述发送端UE；以及在确定所述V2X的传输方式为组播传输时，仅在所述指示信息为Nack应答时，将所述Nack应当发送给所述发送端UE。即，传 输方式为单播传输时设置Ack应答或Nack应答，传输方式为组播传输时设置Nack应答。在本实施例中，针对组播传输，为了减少应答信号负载，同时考虑到Nack应答出现的概率小于Ack应答，可以只发送Nack应答，即，只在没有正确接收V2X数据时发送应答，正确接收时则不发送Ack应答。
需要说明的是，在实际应用中，对于组播传输也可以Ack应答和Nack应答都发送，即，正确接收时发送Ack应答，错误接收时发送Nack应答。在该处理方式下，基于所述V2X的传输方式确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式的处理(即，处理二)可以包括：在确定所述V2X的传输方式为组播传输时，确定所述指示信息的发送方式为在所述指示信息为Ack应答时，将所述Ack应答发送给所述发送端UE，以及在所述指示信息为Nack应答时，将所述Nack应答发送给所述发送端UE。
处理三：基于所述PC5反馈状态确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式，包括：在所述PC5反馈状态为激活状态时，执行确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式。PC5反馈状态包括激活和未激活，PC5反馈激活时设置PSFCH内容，PC5未激活时不设置PSFCH内容。
在一实施例中，在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤(即，步骤S306)包括：在所述PSFCH资源上按照所述发送方式发送所述指示信息以及以下信息至少之一：用于指示利用PC5接口传输所述V2X消息的次序的进程标识；用于发送所述V2X消息的发送端UE的标识；以及所述接收端UE的标识。
在本实施例中，考虑到V2X业务可重传多次，可以在PSFCH内容中包含传输进程标识，用于指示PC5传输V2X业务的次序；为了区别不同的发送端和接收端，可以在PSFCH内容中包含源标识和目的标识，对于组播传输，目标标识为组播组标识。需要说明的是，在本公开实施例中，指示信息以及上述的进程标识、源标识和目的标识可以共同构成PSFCH内容，后续实施例中所出现的PSFCH内容可以包括指示信息、进程标识、源标识和目的标识中的至少之一。
在一实施例中，接收端UE可以根据gNB的指示信息设置PSFCH内容，或者自主设置PSFCH内容。
在一实施例中，在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤(即，步骤S306)包括：配置所述指示信息的发送定时器，并且在所述定时器超时之前且存在所述PSFCH资源时发送所述指示信息。
在一实施例中，确定用于发送所述指示信息的PSFCH资源的步骤(即，步骤S304)包括以下至少之一：获取用于发送所述V2X消息的发送端UE所指示的PSFCH资源；获取基站配置的PSFCH资源；从5G基站gNB广播的资源池中选择PSFCH资源；以及从预配置的资源池中选择PSFCH资源。在本实施例中，可以由发送端UE向接收端UE指示PSFCH资源位置信息，或者接收端UE通过系统广播消息或预配置资源池获取PSFCH资源位置。针对后一种方式，接收端UE可以将获取的PSFCH资源位置信息通知给发送端UE。在本实施例中，还可以由eNB配置PSFCH资源。
在一实施例中，PSFCH资源为在相同的时间间隔上配置的相同的频域和码域资源，并且PSFCH资源与所述V2X消息对应的V2X业务的资源位于相同的资源池。
在一实施例中，在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤(即，步骤S306)包括：判断PC5反馈状态是否为激活状态；在确定所述PC5反馈状态为激活状态时，在所述PSFCH资源上按照所述发送方式发送所述指示信息；以及在确定所述PC5反馈状态为未激活状态时，不执行在所述PSFCH资源上按照所述发送方式发送所述指示信息的处理。在本实施例中，接收端UE是否通过PSFCH执行发送(包括是否设置PSFCH内容，即，确定指示信息，是否获取PSFCH资源)可以由PC5反馈状态是否为激活状态决定：当PC5反馈状态为激活状态时，所述接收端UE确定通过PSFCH执行发送，否则不通过PSFCH执行发送。在本实施例中，具体的通过PSFCH执行发送的步骤包括：1)PC5反馈激活；2)通知接收端UE；3)接收端UE设置PSFCH内容；4)接收端UE获取PSFCH资源；5)接收端 UE通过PSFCH执行发送。
在一实施例中，所述方法还包括：通过以下方式至少之一确定所述PC5反馈是否被激活：确定用于发送所述V2X消息的发送端UE通过PC5所通知的所述PC5反馈是否被激活的信息；接收来自gNB的第一广播消息，确定所述第一广播消息中携带的所述PC5反馈是否被激活的信息；以及通过PSFCH资源池状态确定所述PC5反馈是否被激活的信息。在本实施例中，在通过PSFCH资源池状态确定所述PC5反馈是否被激活的信息时，如果PSFCH资源池为空，则说明PC5反馈未被激活；否则，说明PC5反馈被激活。
在一实施例中，在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤(即，步骤S306)包括：确定发送所述V2X消息以及发送所述指示信息的时间间隔；以及按照所述时间间隔在所述PSFCH资源上按照所述发送方式发送所述指示信息。
在一实施例中，确定发送所述V2X消息以及发送所述指示信息的时间间隔的步骤包括：确定预先配置的所述时间间隔；或者接收来自gNB的第二广播消息，获取所述第二广播消息中携带的所述时间间隔。
在上述实施例中，为了减少发送端UE的等待时延，可以配置应答信号(即，指示信息)和相应的V2X业务数据(即，V2X消息)之间的时间间隔，即，发送端UE在发送了V2X业务数据后等待一段时间间隔后检测接收应答信号。所述时间间隔可以由gNB配置并通过广播消息发送，或者可以预配置并保存在UE(包括发送端UE和/或接收端UE)中。
在一实施例中，按照所述时间间隔在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤包括：在所述时间间隔内至少两次在所述PSFCH资源上按照所述发送方式发送所述指示信息。在本实施例中，所述接收端UE发送设置好的PSFCH内容(即，指示信息)，为了保证V2X业务时延要求，需要设置PSFCH发送的时间窗(或者定时器)，即，在收到V2X业务(即，V2X消息)后的一定时间内发送设置好的PSFCH内容，为了保证可靠性，可在时间窗内多次发送PSFCH 内容。所述PSFCH时间窗可以由gNB配置或预配置，并由所有参与V2X应答过程的UE获取。
在一实施例中，所述PSFCH资源包括：时域资源、频域资源和码域资源。
在一实施例中，所述PSFCH资源包括以下至少之一：所述时域资源为基站或用于发送所述V2X消息的发送端UE配置的时域资源；所述频域资源包括以下至少之一：与所述V2X消息所对应的业务的频域资源一致的频域资源以及与所述V2X消息所对应的业务的频域资源相邻的频域资源；所述码域资源包括以下至少之一：gNB分配的码域资源以及预配置的码域资源。在本实施例中，时域资源(或称为时域位置)可以固定配置，可以为发送V2X业务数据之后的特定符号，如用于传输V2X业务的时隙中的最后一个符号，并且位于对应的V2X业务数据之后；频域资源(或称为频域位置)可以为用于V2X业务的频域范围(即，用于V2X业务的全部资源块(Resource Block，RB))，或者与对应V2X业务的频域位置一致(即，与对应V2X业务占用相同的RB)，或者与对应V2X业务的频域位置相邻；码域资源可采用gNB分配的码域资源或者预配置的码域资源，码域资源是指PSFCH采用的编码的码字，包括信道编码和扰码，PSFCH信道编码可采用与物理边路控制信道(Physical Sidelink Control Channel，PSCCH)相同的编码，如极化polar码，如果PSFCH的内容较少，则还可以采用其他简化编码，如重复码(1bit)、Simplex码(2bits)、RM(Reed Muller)(3-11bits)，扰码可采用基于目的(目的UE或多播组)标识的码字，具体的码域资源由gNB配置或预配置在UE中。为了便于检测，PSFCH需要加扰，可采用接收端UE标识特定的扰码对PSFCH加扰。所述PSFCH采用与对应V2X业务相同的循环前缀(Cyclic Prefix，CP)和子载波间隔(Sub Carrier Space，SCS)。在本实施例中，所述PSFCH资源用于传输PSFCH内容，所述PSFCH资源为专用资源，不与PSCCH/物理边路共享信道(Physical Sidelink Share Channel，PSSCH)资源池共享。
在本实施例中，PC5通信包括同频或异频。同频是指Uu和PC5 通信共享频率，异频是指PC5通信采用智能交通系统(Intelligent Transport System，ITS)专用频率，如5.9GHz V2X频率。
所述PC5是指UE之间的接口，也可以采用其他名称表示(如Sidelink)。PC5接口可采用授权频谱或非授权频谱的Prose技术。
图4是根据本公开实施例的另一种信息的传输方法的流程图，在本实施例中提供了一种可以运行于上述移动终端10的信息的传输方法，如图4所示，该流程包括如下步骤S402至S404。
在步骤S402，确定PSFCH资源。
在步骤S404，将所述PSFCH资源发送给用于接收V2X消息的接收端UE，以指示所述接收端UE在所述PSFCH资源上发送指示信息，其中，所述指示信息用于指示所述接收端UE是否成功接收所述V2X消息。
执行上述操作的主体可以是用于发送V2X消息的发送端UE。
在上述实施例中，由于可以确定用于发送指示信息的PSFCH资源，进而可以在所述PSFCH资源上发送所述指示信息，实现了针对V2X应答信号(即，指示信息)的设计，保证了在V2X业务传输时，对于PSFCH信号发送的需求，提高了V2X业务的可靠性，有效解决了相关技术中存在的对于如何传输指示信息，并未提出明确的方案的问题。
在一实施例中，所述方法还包括：确定PC5反馈是否被激活的信息；以及通过PC5将所述PC5反馈是否被激活的信息通知给所述接收端UE。
在一实施例中，确定PSFCH资源的步骤(即，步骤402)包括：确定用于发送所述V2X消息的发送端UE所处的传输模式；以及采用与所述传输模式对应的确定方式确定所述PSFCH资源。
在一实施例中，采用与所述传输模式对应的确定方式确定所述PSFCH资源的步骤包括以下至少之一：当所述发送端UE处于模式mode1时，向gNB请求PSFCH资源，并获取所述gNB配置的PSFCH资源；以及当所述发送端UE处于mode2时，从PSFCH资源池中选择PSFCH资源。
在一实施例中，所述PSFCH资源包括：时域资源、频域资源和码域资源。
在一实施例中，所述PSFCH资源包括以下至少之一：所述时域资源为基站或发送端UE配置的时域资源，即，与所述V2X消息之间的间隔时间；所述频域资源包括以下至少之一：与所述V2X消息所对应的业务的频域资源一致的频域资源以及与所述V2X消息所对应的业务的频域资源相邻的频域资源；所述码域资源包括以下至少之一：gNB分配的码域资源以及预配置的码域资源。
下面结合具体实施例对本公开进行说明。
图5为根据本公开实施例提供的方法的流程示意图，本实施例提供了一种针对单播场景发送PSFCH内容的方法，请参考图5，该方法包括步骤502至508。
在步骤502，UE(即，发送端UE)通过PC5单播发送V2X业务数据(即，V2X消息)。
所述UE首先获取发送资源，例如，通过gNB获取(mode1)或自主选择获取(mode2)。所述UE可以在获取初传资源的同时获取重传资源。所述UE为发送端UE，与接收端UE建立单播链接，向接收端UE发送V2X业务资源指示信息并在所述资源上发送V2X业务数据。如果所述发送端UE已获取重传资源，则向接收端UE指示重传资源和重传次数。
在步骤504，接收端UE判断是否发送应答信号，如果发送应答信号，则转向步骤506；否则，转向步骤510。
所述接收端UE根据PC5反馈激活状态确定是否发送应答信号(即，指示信号)，如果PC5反馈已激活，则发送应答信号；否则，不发送应答信号。所述PC5反馈激活状态可通过以下方式之一获取：gNB通过广播消息指示；发送端UE通过PC5信令指示。
在步骤506，接收端UE上报应答信息。
PSFCH资源可以由发送端UE向gNB请求，并将资源位置通知接收端UE，或者发送端UE自主选择并将选好的PSFCH资源位置通知接收端UE。
所述接收端UE根据发送端UE的指示信息接收V2X数据，如果UE能够正确解码，则上报“肯定”应答，否则上报“否定”应答。所述上报通过PC5接口上的PSFCH信道发送。
可选地，所述应答信号还包括以下之一：传输进程标识、目的标识、源标识。
在发送应答信号之前，所述接收端UE首先获取PSFCH资源。
在步骤508，发送端UE根据应答信号确定是否重传。
如果发送端UE收到肯定应答，则继续发送新的V2X数据，在发送新的V2X数据之前，所述发送端UE请求新的V2X数据发送资源。如果发送端UE已获取重传资源，则所述UE发送释放重传资源的指示信息，所述指示信息可发给gNB(mode1)或通过PC5广播；
如果发送端UE收到否定应答，则通过PC5接口重传V2X数据。如果所述发送端UE已获取PC5重传资源，则在重传资源上重传V2X数据；否则，所述UE先获取重传资源，例如，通过gNB配置(mode1)或UE自主选择重传资源。
在步骤510，接收端UE不发送应答信号。
如果PC5反馈未激活，则不需要发送PSFCH应答信号。
图6为根据本公开实施例提供的方法的流程示意图，本实施例提供了一种多播场景中发送PSFCH内容的方法，请参考图6，该方法包括步骤602至608。
在步骤602，发送端UE采用多播发送V2X业务数据。
所述发送端UE向多个接收端UE同时组播发送V2X业务数据。所述多播类似于广播(也可称为“组播”)，多个接收端加入一个多播组中，发送端UE在多播公共信道上发送V2X业务数据，只有加入了多播组的UE可以接收相应的V2X业务。与单播重传类似，发送端UE在获取多播初传资源时可同时获取多播重传资源。
在步骤604，接收端UE判断是否发送应答信号，如果发送应答信号，则转向步骤606；否则，转向步骤610。
所述接收端UE根据PC5反馈激活状态确定是否发送应答信号，如果PC5反馈已激活，则发送应答信号；否则，不发送应答信号。
需要指出的是，如果接收端UE正确解码收到的V2X数据，也不需要发送应答信号。
在步骤606，接收端UE发送应答信号。
所述接收端UE的数量多于一个，考虑到多播发送的是相同V2X数据，而且只要有一个接收端UE发送否定应答，发送端UE都需要重传V2X数据。一般Nack信号数量要小于Ack信号数量，可以只发送Nack应答信号，即，正确接收到V2X数据的UE可不发送应答信号。
可选地，所述应答信号还包括以下之一：传输进程标识，目的组标识，源标识。
在所述UE在发送应答之前，先要获取PSFCH资源。
在步骤608，发送端UE采用多播重传V2X业务数据。
所述发送端UE收到否定应答信号，说明存在接收端UE没有正确接收V2X业务，只要所述发送端UE收到一个否定应答信号，即可停止检测接收其他的应答信号。
如果所述发送端UE已获取重传资源，则在重传资源上重传V2X业务数据，否则所述发送端UE获取重传资源，并向接收端UE指示重传资源并发送V2X业务数据。
在步骤610，接收端UE不发送应答信号。
PC5反馈未激活，或者所述接收端UE正确解码收到的V2X数据，不发送应答信号。
需要指出的是，如果针对组播，需要发送Ack/Nack应答，则当PC5反馈激活，所述接收端UE正确接收V2X数据时，需要接收端UE发送Ack应答。
图7为根据本公开实施例提供的方法的流程示意图，本实施例提供了一种mode1传输时，配置PSFCH资源的方法，请参考图7，该方法包括步骤702至710。
在步骤702，gNB指示激活PC5反馈。
所述gNB根据以下条件至少之一确定激活PC5反馈：UE请求、V2X业务QoS、PC5链路状态。例如，UE请求PC5反馈和/或V2X业务可靠性要求高和/或PC5链路质量差，所述gNB确定激活PC5反馈。 所述gNB可通过物理层下行控制信息(Downlink Control Information，DCI)信令，媒体接入控制(Media Access Control，MAC)控制单元(control element，CE)信令或者无线资源控制(Radio Resource Control，RRC)信令发送所述指示。
在步骤704，发送端UE向gNB请求V2X资源。
所述发送端UE通过RRC信令向gNB请求资源，所述gNB通过RRC信令向所述UE指示资源信息。
需要指出的是，即使发送端UE没有向gNB请求重传资源，所述gNB可以同时配置初传和重传资源并通知所述UE。
可选地，所述V2X资源还包括PSFCH资源。
在步骤706，发送端UE发送V2X业务数据。
所述发送端UE通过PSCCH发送资源位置，并通过PSSCH在所述资源上发送V2X数据。
在步骤708，接收端UE获取PSFCH资源。
发送端UE向gNB请求PSFCH资源，gNB向发送端UE指示PSFCH资源，发送端UE将得到的资源通知接收端UE。
为了减少时延，所述发送端UE可在步骤706发送V2X业务时发送PSFCH资源信息，例如，在边路控制信息(Sidelink Control Information，SCI)中指示，并通过PSCCH发送。
所述PSFCH资源包括：时域资源，频域资源和码域资源。时域资源可由配置确定，例如，在V2X资源时隙中的最后一个符号，该符号一般用于实现收发转换，因为V2X传输模块为半双工，即不能同时收发，收发转换需要一定的时间完成；频域资源可以是上述符号的用于V2X业务的全部RB，或者与对应V2X业务占用相同的RB，或者与对应V2X业务相邻的RB；码域资源可由gNB配置或预配置，用于信道编码或加扰。
在步骤710，所述接收端UE在PSFCH上发送应答信号。
所述接收端UE根据接收到的V2X业务发送应答信号，如果正确解码V2X数据，则发送肯定Ack应答信号；否则，发送否定Nack应答信号。
图8为根据本公开实施例提供的方法的流程示意图，本实施例提供了一种mode2传输时，确定PSFCH资源的方法，请参考图8，该方法包括步骤802至810。
在步骤802，PC5反馈激活。
针对覆盖内(至少发送端UE位于覆盖内)场景，与步骤702类似，由gNB确定激活PC5反馈，针对覆盖外场景，由发送端UE确定激活PC5反馈，所述发送端UE根据V2X业务QoS需求和/或PC5链路状态确定是否激活PC5反馈。
在步骤804，发送端UE选择V2X资源。
可选地，所述发送端UE选择PSFCH资源；
所述发送端UE通过以下方式之一选择PSFCH资源：1)发送端UE在覆盖内时，在gNB广播的资源池中选择；2)发送端UE在覆盖外时，在UE中预配置的资源池中选择。所述资源池为专用于PSFCH的资源池。
在步骤806，发送端UE发送V2X数据。
可选地，所述发送端UE同时还发送PSFCH资源，例如，通过SCI指示PSFCH资源，并通过PSCCH发送。
在步骤808，接收端UE获取PSFCH资源。
所述接收端UE通过以下方式之一获取PSFCH资源：1)接收发送端UE的资源指示信息；2)接收端UE在覆盖内时，在gNB广播的资源池中选择PSFCH资源；3)接收端UE在覆盖外时，在接收端UE存储的预配置资源中选择PSFCH资源。
所述PSFCH资源包括：时域资源，频域资源和码域资源。时域资源可由配置确定，例如，在V2X资源时隙中的最后一个符号，该符号一般用于实现收发转换，因为V2X传输模块为半双工，即不能同时收发，收发转换需要一定的时间完成；频域资源可以是上述符号的用于V2X业务的全部RB，或者与对应V2X业务占用相同的RB，或者与对应V2X业务相邻的RB；码域资源可由gNB配置或预配置，用于信道编码或加扰。
在步骤810：接收端UE发送应答信号。
如果接收端UE通过发送端UE获取PSFCH资源，则直接在所述资源上发送PSFCH内容；如果接收端UE自己选择PSFCH资源，则通知发送端UE资源位置并发送PSFCH内容。
图9为根据本公开实施例提供的方法的流程示意图，本实施例提供了一种接收端UE设置PSFCH内容的方法，请参考图9，该方法包括步骤902至914。
在步骤902，PC5反馈激活。
与步骤802类似，不再赘述。
在步骤904，发送端UE发送V2X数据。
在步骤906，接收端UE判断是否为单播传输，如果是单播传输，则转向步骤908；否则，转向步骤910。
在步骤908，接收端UE设置PSFCH内容并发送。
如果UE能够正确解码，则上报肯定Ack应答，否则上报否定Nack应答。所述上报通过PC5接口上的PSFCH信道发送。
可选地，所述应答信号还包括以下之一：传输进程标识、目的标识、源标识。所述传输进程标识用于区分传输进程，因为应答信号可能发送多次，需要区分每个应答信号针对的传输进程；目的标识和源标识采用层2(layer2)标识指示。
所述接收端UE在发送PSFCH之前，需要获取PSFCH的资源位置。
在步骤9010，接收端UE判断是否正确接收V2X业务，如果正确接收V2X业务，则转向步骤9012；否则，转向步骤9014。
针对多播V2X传输，如果正确接收V2X数据，可不发应答信号；否则，发送应答信号。
在步骤9012，接收端UE不发送应答信号。
在步骤9014，接收端UE发送应答信号。
所述应答信号为否定应答，可选地，所述应答信号还包括以下之一：传输进程标识、目的标识、源标识。所述传输进程标识用于区分传输进程，因为应答信号可能发送多次，需要区分每个应答信号针对的传输进程；目的标识和源标识采用层2(layer2)标识指示。
图10为根据本公开实施例提供的方法的流程示意图，本实施例 提供了一种设置PSFCH时间窗的方法，请参考图10，该方法包括步骤1002至1008。
在步骤1002，激活PC5反馈；
根据待发送V2X业务的QoS要求、PC5链路状态、PC5反馈状态中的至少之一确定是否需要激活/去激活PC5反馈。PC5反馈状态包括激活或者未激活。如果PC5反馈已激活，则可以继续保持激活或去激活；如果PC5反馈未激活，则可以激活或者保持不激活。所述激活由gNB(覆盖内)或发送端UE(覆盖外)决定。
在步骤1004，接收端UE获取PSFCH时间窗。
所述PSFCH时间窗通过以下方式之一设置：1)gNB通过广播通知多个时间窗数值，发送端UE选择一个数值并通知接收端UE；2)预配置在UE中，发送端UE选择一个数值并通知接收端UE。
发送端UE可通过SCI信令、MAC CE信令或RRC信令通知接收端UE。
PSFCH时间窗的选择需要考虑V2X业务的时延要求，如对于低时延V2X业务，时间窗比较短。
在步骤1006，接收端UE在时间窗内发送PSFCH。
为了提高可靠性，如果在一个时间窗内存在多次发送PSFCH机会，所述接收端UE可以在时间窗内多次发送PSFCH，多次发送的PSFCH资源在发送前确定。在一个时间窗内，多次发送的PSFCH内容保持一致。超过时间窗时，则接收端UE不再发送PSFCH。假设接收端UE在t1时刻开始发送PSFCH内容，则同时启动定时器T，定时器T长度为时间窗数值。针对单播传输，如果只有一次发送PSFCH机会，则发送PSFCH内容后停止定时器T；否则，在T超时前多次发送PSFCH内容。针对多播传输，正确接收V2X数据后停止定时器T。如V2X数据接收错误，接收端UE发送否定应答后停止定时器T，如果有多次发送机会和资源，则在定时器T超时前可多次发送否定应答。
在步骤1008，发送端UE在时间窗内接收PSFCH内容。
假设发送端UE在t0时刻发送V2X数据，接收端UE在t0+Tgap后开始发送PSFCH，Tgap为配置的发送PSFCH内容的间隔时间，则发 送端UE在t0+Tgap时刻启动定时器T，定时器T长度为配置的时间窗数值，如果发送端UE在t0+Tgap+T之前收到PSFCH内容，则停止计时器T。如果定时器T超时且未收到PSFCH，针对单播传输，发送端UE认为发送失败，重传或丢弃相应的V2X数据(根据V2X数据的时延要求)；针对多播传输，发送端UE认为发送成功。
本公开实施例提供了一种传输应答信号的系统，请参考图11，该系统包括无线接入网装置1101和终端1102。无线接入网装置1101包括基站11011。终端1102包括通信模块11021和其他模块11022。通信模块11021用于接收基站11011或其他模块11022发送的或预配置的PSFCH资源信息，并接收PSFCH信号。终端1102的通信模块11021还用于确定PSFCH时间窗，确定PSFCH资源，以及确定PSFCH内容。终端1102的通信模块11021还用于发送PSFCH信号，发送PSFCH资源指示信息，以及发送PSFCH资源请求信息和时间窗信息。其他模块11022包括：供电模块、射频模块、基带模块、显示模块、音频/视频模块、导航模块、存储模块等，这些模块用于实现与V2X通信相关的功能。基站11011用于向终端1102发送PSFCH资源配置信息和时间窗信息，并接收PSFCH资源请求信息。
在本实施例中，终端装置根据在PC5接口上接收的数据配置PSFCH内容，根据gNB指示或预配置规确定PSFCH内容的发送位置，并在所述位置发送PSFCH信息。接入网装置1101为基站，包括以下之一：eNB、gNB。接入网装置1101主要负责为终端1102配置PSFCH资源，并向终端1102通知PSFCH资源。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开各个实施例所述的方法。
在本实施例中还提供了一种信息的传输装置，该装置用于实现上述实施例和实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图12是根据本公开实施例的信息的传输装置的结构框图，如图12所示，该装置包括第一确定模块1202、第二确定模块1204和第一发送模块1206。
第一确定模块1202用于确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式。第二确定模块1204用于确定用于发送所述指示信息的PSFCH资源。第一发送模块1206用于在所述PSFCH资源上按照所述发送方式发送所述指示信息。
在一实施例中，所述第一确定模块1202可以通过如下方式确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式：确定所述V2X的解码状态、所述V2X的传输方式以及PC5反馈状态；以及基于所述V2X的解码状态、所述V2X的传输方式以及PC5反馈状态确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式。
在一实施例中，所述第一确定模块1202可以通过如下方式基于所述V2X的解码状态确定用于指示接收端UE是否成功接收V2X消息的指示信息：在确定所述V2X的解码状态为正确解码时，确定所述指示信息为确认Ack应答；以及在确定所述V2X的解码状态为未正确解码时，确定所述指示信息为非确认Nack应答。
在一实施例中，所述第一确定模块1202可以通过如下方式基于所述V2X的传输方式确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式：在确定所述V2X的传输方式为单播传输时，确定所述指示信息的发送方式为在所述指示信息为Ack应答时，将所述Ack应答发送给所述发送端UE，以及在所述指示信息为Nack应答时，将所述Nack应答发送给所述发送端UE；以及在确定所述V2X的传输方式为组播传输时，仅在所述指示信息为Nack应答时，将所述 Nack应当发送给所述发送端UE。
在一实施例中，所述第一确定模块1202可以通过如下方式基于所述PC5反馈状态确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式：在所述PC5反馈状态为激活状态时，执行确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式。
在一实施例中，所述第一确定模块1202可以通过如下方式基于所述V2X的传输方式确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式：在确定所述V2X的传输方式为组播传输时，确定所述指示信息的发送方式为在所述指示信息为Ack应答时，将所述Ack应答发送给所述发送端UE，以及在所述指示信息为Nack应答时，将所述Nack应答发送给所述发送端UE。
在一实施例中，所述第一发送模块1206可以通过如下方式在所述PSFCH资源上按照所述发送方式发送所述指示信息：在所述PSFCH资源上按照所述发送方式发送所述指示信息以及以下信息至少之一：用于指示利用PC5接口传输所述V2X消息的次序的进程标识；用于发送所述V2X消息的发送端UE的标识；以及所述接收端UE的标识。
在一实施例中，所述第一发送模块1206可以通过如下方式在所述PSFCH资源上按照所述发送方式发送所述指示信息：配置所述指示信息的发送定时器，并且在所述定时器超时之前且存在所述PSFCH资源时发送所述指示信息。
在一实施例中，所述第二确定模块1204可以通过如下方式至少之一确定用于发送所述指示信息的物理边路反馈信道PSFCH资源：获取用于发送所述V2X消息的发送端UE所指示的PSFCH资源；获取基站配置的PSFCH资源；从5G基站gNB广播的资源池中选择PSFCH资源；以及从预配置的资源池中选择PSFCH资源。
在一实施例中，PSFCH资源为在相同的时间间隔上配置的相同的频域和码域资源，并且PSFCH资源与所述V2X消息对应的V2X业务的资源位于相同的资源池。
在一实施例中，所述第一发送模块1206可以通过如下方式在所述PSFCH资源上按照所述发送方式发送所述指示信息：判断PC5反馈 状态是否为激活状态；在确定所述PC5反馈状态为激活状态时，在所述PSFCH资源上按照所述发送方式发送所述指示信息；以及在确定所述PC5反馈状态为未激活状态时，不执行在所述PSFCH资源上按照所述发送方式发送所述指示信息的处理。
在一实施例中，所述装置通过以下方式至少之一确定所述PC5反馈是否被激活：确定用于发送所述V2X消息的发送端UE通过PC5所通知的所述PC5反馈是否被激活的信息；接收来自gNB的第一广播消息，确定所述第一广播消息中携带的所述PC5反馈是否被激活的信息；以及通过PSFCH资源池状态确定所述PC5反馈是否被激活的信息。
在一实施例中，所述第一发送模块1206可以通过如下方式在所述PSFCH资源上按照所述发送方式发送所述指示信：确定发送所述V2X消息以及发送所述指示信息的时间间隔；以及按照所述时间间隔在所述PSFCH资源上按照所述发送方式发送所述指示信息。
在一实施例中，所述第一发送模块1206可以通过如下方式确定发送所述V2X消息以及发送所述指示信息的时间间隔：确定预先配置的所述时间间隔；或者接收来自gNB的第二广播消息，获取所述第二广播消息中携带的所述时间间隔。
在一实施例中，所述第一发送模块1206可以通过如下方式按照所述时间间隔在所述PSFCH资源上按照所述发送方式发送所述指示信息：在所述时间间隔内至少两次在所述PSFCH资源上按照所述发送方式发送所述指示信息。
在一实施例中，所述PSFCH资源包括：时域资源、频域资源和码域资源。
在一实施例中，所述PSFCH资源包括以下至少之一：所述时域资源为基站或用于发送所述V2X消息的发送端UE配置的时域资源；所述频域资源包括以下至少之一：与所述V2X消息所对应的业务的频域资源一致的频域资源以及与所述V2X消息所对应的业务的频域资源相邻的频域资源；所述码域资源包括以下至少之一：gNB分配的码域资源以及预配置的码域资源。
图13是根据本公开实施例的另一种信息的传输装置的结构框图，如图13所示，该装置包括第三确定模块1302和第二发送模块1304。
第三确定模块1302用于确定PSFCH资源。第二发送模块1304用于将所述PSFCH资源发送给用于接收V2X消息的接收端UE，以指示所述接收端UE在所述PSFCH资源上发送指示信息，其中，所述指示信息用于指示所述接收端UE是否成功接收所述V2X消息。
在一实施例中，所述装置还确定PC5反馈是否被激活的信息，并且通过PC5将所述PC5反馈是否被激活的信息通知给所述接收端UE。
在一实施例中，所述第三确定模块1302可以通过如下方式确定PSFCH资源：确定用于发送所述V2X消息的发送端UE所处的传输模式；以及采用与所述传输模式对应的确定方式确定所述PSFCH资源。
在一实施例中，所述第三确定模块1302可以通过如下方式至少之一实现采用与所述传输模式对应的确定方式确定所述PSFCH资源：当所述发送端UE处于模式mode1时，向gNB请求PSFCH资源，并获取所述gNB配置的PSFCH资源；以及当所述发送端UE处于mode2时，从PSFCH资源池中选择PSFCH资源。
在一实施例中，所述PSFCH资源包括：时域资源、频域资源和码域资源。
在一实施例中，所述PSFCH资源包括以下至少之一：所述时域资源为基站或发送端UE配置的时域资源；所述频域资源包括以下至少之一：与所述V2X消息所对应的业务的频域资源一致的频域资源以及与所述V2X消息所对应的业务的频域资源相邻的频域资源；所述码域资源包括以下至少之一：gNB分配的码域资源以及预配置的码域资源。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
本公开的实施例还提供了一种存储介质，该存储介质中存储有 计算机程序，该计算机程序被处理器运行时，使得所述处理器执行根据本公开各实施例的信息的传输方法。
在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本公开的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器运行计算机程序时执行根据本公开各实施例的信息的传输方法。
上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
根据本公开的各实施例，接收端UE设置PSFCH应答内容，获取PSFCH资源，接收端UE在PSFCH上发送应答信号，实现了针对V2X应答信号的设计，保证了在V2X业务单播和多播传输时，对于PSFCH信号发送的需求，提高了V2X业务的可靠性，保证了PC5资源的有效利用。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (27)

  1. 一种信息的传输方法，包括：
    确定用于指示接收端用户设备UE是否成功接收车联网V2X消息的指示信息以及所述指示信息的发送方式；
    确定用于发送所述指示信息的物理边路反馈信道PSFCH资源；以及
    在所述PSFCH资源上按照所述发送方式发送所述指示信息。
  2. 根据权利要求1所述的方法，其中，确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式包括：
    确定所述V2X的解码状态、所述V2X的传输方式以及PC5反馈状态；以及
    基于所述V2X的解码状态、所述V2X的传输方式以及PC5反馈状态确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式。
  3. 根据权利要求2所述的方法，其中，基于所述V2X的解码状态、所述V2X的传输方式以及PC5反馈状态确定用于指示接收端UE是否成功接收V2X消息的指示信息以及所述指示信息的发送方式的步骤包括以下至少之一：
    基于所述V2X的解码状态确定用于指示接收端UE是否成功接收V2X消息的指示信息，在确定所述V2X的解码状态为正确解码时，确定所述指示信息为确认Ack应答，并且在确定所述V2X的解码状态为未正确解码时，确定所述指示信息为非确认Nack应答；
    基于所述V2X的传输方式确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式，在确定所述V2X的传输方式为单播传输时，响应于确定所述指示信息的发送方式为在所述指示信息为Ack应答，将所述Ack应答发送给用于发送所述V2X消息的发送端UE， 以及响应于所述指示信息为Nack应答，将所述Nack应答发送给所述发送端UE，并且在确定所述V2X的传输方式为组播传输时，仅在所述指示信息为Nack应答时，将所述Nack应当发送给所述发送端UE；
    基于所述PC5反馈状态确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式，在所述PC5反馈状态为激活状态时，执行确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式。
  4. 根据权利要求3所述的方法，其中，基于所述V2X的传输方式确定用于指示接收端UE是否成功接收V2X消息的指示信息的发送方式的步骤包括：
    在确定所述V2X的传输方式为组播传输时，确定所述指示信息的发送方式为在所述指示信息为Ack应答时，将所述Ack应答发送给用于发送所述V2X消息的发送端UE，以及在所述指示信息为Nack应当时，将所述Nack应答发送给所述发送端UE。
  5. 根据权利要求1所述的方法，其中，在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤包括：
    在所述PSFCH资源上按照所述发送方式发送所述指示信息以及以下信息至少之一：
    用于指示利用PC5接口传输所述V2X消息的次序的进程标识；
    用于发送所述V2X消息的发送端UE的标识；以及
    所述接收端UE的标识。
  6. 根据权利要求1所述的方法，其中，在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤包括：
    配置所述指示信息的发送定时器，并且在所述定时器超时之前且存在所述PSFCH资源时发送所述指示信息。
  7. 根据权利要求1所述的方法，其中，确定用于发送所述指示 信息的PSFCH资源的步骤包括以下至少之一：
    获取用于发送所述V2X消息的发送端UE所指示的PSFCH资源；
    获取基站配置的PSFCH资源；
    从gNB广播的资源池中选择PSFCH资源；以及
    从预配置的资源池中选择PSFCH资源。
  8. 根据权利要求1所述的方法，其中，所述PSFCH资源为在相同的时间间隔上配置的相同的频域和码域资源，并且所述PSFCH资源与所述V2X消息对应的V2X业务的资源位于相同的资源池。
  9. 根据权利要求1所述的方法，其中，在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤包括：
    判断PC5反馈状态是否为激活状态；
    在确定所述PC5反馈状态为激活状态时，在所述PSFCH资源上按照所述发送方式发送所述指示信息；并且
    在确定所述PC5反馈状态为未激活状态时，不执行在所述PSFCH资源上按照所述发送方式发送所述指示信息的处理。
  10. 根据权利要求3或9所述的方法，其中，所述方法还包括通过以下方式至少之一确定所述PC5反馈是否被激活：
    确定用于发送所述V2X消息的发送端UE通过PC5所通知的所述PC5反馈是否被激活的信息；
    接收来自gNB的第一广播消息，确定所述第一广播消息中携带的所述PC5反馈是否被激活的信息；以及
    通过PSFCH资源池状态确定所述PC5反馈是否被激活的信息。
  11. 根据权利要求1所述的方法，其中，在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤包括：
    确定发送所述V2X消息以及发送所述指示信息的时间间隔；以及
    按照所述时间间隔在所述PSFCH资源上按照所述发送方式发送所述指示信息。
  12. 根据权利要求11所述的方法，其中，确定发送所述V2X消息以及发送所述指示信息的时间间隔的步骤包括：
    确定预先配置的所述时间间隔；或者
    接收来自gNB的第二广播消息，获取所述第二广播消息中携带的所述时间间隔。
  13. 根据权利要求11所述的方法，其中，按照所述时间间隔在所述PSFCH资源上按照所述发送方式发送所述指示信息的步骤包括：
    在所述时间间隔内至少两次在所述PSFCH资源上按照所述发送方式发送所述指示信息。
  14. 根据权利要求1至13中任一项所述的方法，其中，所述PSFCH资源包括：
    时域资源、频域资源和码域资源。
  15. 根据权利要求14所述的方法，其中，所述PSFCH资源包括以下至少之一：
    所述时域资源为基站或用于发送所述V2X消息的发送端UE配置的时域资源；
    所述频域资源包括以下至少之一：与所述V2X消息所对应的业务的频域资源一致的频域资源以及与所述V2X消息所对应的业务的频域资源相邻的频域资源；
    所述码域资源包括以下至少之一：gNB分配的码域资源以及预配置的码域资源。
  16. 一种信息的传输方法，包括：
    确定物理边路反馈信道PSFCH资源；以及
    将所述PSFCH资源发送给用于接收车联网V2X消息的接收端用户设备UE，以指示所述接收端UE在所述PSFCH资源上发送指示信息，
    其中，所述指示信息用于指示所述接收端UE是否成功接收所述V2X消息。
  17. 根据权利要求16所述的方法，还包括：
    确定PC5反馈是否被激活的信息；以及
    通过PC5将所述PC5反馈是否被激活的信息通知给所述接收端UE。
  18. 根据权利要求16所述的方法，其中，确定PSFCH资源的步骤包括：
    确定用于发送所述V2X消息的发送端UE所处的传输模式；以及
    采用与所述传输模式对应的确定方式确定所述PSFCH资源。
  19. 根据权利要求18所述的方法，其中，采用与所述传输模式对应的确定方式确定所述PSFCH资源的步骤包括以下至少之一：
    当所述发送端UE处于模式mode1时，向gNB请求PSFCH资源，并获取所述gNB配置的所述PSFCH资源；以及
    当所述发送端UE处于mode2时，从PSFCH资源池中选择PSFCH资源。
  20. 根据权利要求16至19中任一项所述的方法，其中，所述PSFCH资源包括：
    时域资源、频域资源和码域资源。
  21. 根据权利要求20所述的方法，其中，所述PSFCH资源包括以下至少之一：
    所述时域资源为基站或发送端UE配置的时域资源；
    所述频域资源包括以下至少之一：与所述V2X消息所对应的业 务的频域资源一致的频域资源以及与所述V2X消息所对应的业务的频域资源相邻的频域资源；
    所述码域资源包括以下至少之一：gNB分配的码域资源以及预配置的码域资源。
  22. 一种信息的传输装置，包括：
    第一确定模块，用于确定用于指示接收端用户设备UE是否成功接收车联网V2X消息的指示信息以及所述指示信息的发送方式；
    第二确定模块，用于确定用于发送所述指示信息的物理边路反馈信道PSFCH资源；以及
    第一发送模块，用于在所述PSFCH资源上按照所述发送方式发送所述指示信息。
  23. 一种信息的传输装置，包括：
    第三确定模块，用于确定物理边路反馈信道PSFCH资源；以及
    第二发送模块，用于将所述PSFCH资源发送给用于接收车联网V2X消息的接收端用户设备UE，以指示所述接收端UE在所述PSFCH资源上发送指示信息，
    其中，所述指示信息用于指示所述接收端UE是否成功接收所述V2X消息。
  24. 一种存储介质，其上存储有计算机程序，其中，所述计算机程序被处理器运行时，使得所述处理器执行根据权利要求1至15中任一项所述的信息的传输方法。
  25. 一种存储介质，其上存储有计算机程序，其中，所述计算机程序被处理器运行时，使得所述处理器执行根据权利要求16至21中任一项所述的信息的传输方法。
  26. 一种电子装置，包括存储器和处理器，其中，所述存储器 中存储有计算机程序，所述处理器运行所述计算机程序时执行根据权利要求1至15中任一项所述的信息的传输方法。
  27. 一种电子装置，包括存储器和处理器，其中，所述存储器中存储有计算机程序，所述处理器运行所述计算机程序时执行根据权利要求16至21中任一项所述的信息的传输方法。
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