WO2021203347A1 - 边链路发送和接收方法以及装置 - Google Patents

边链路发送和接收方法以及装置 Download PDF

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Publication number
WO2021203347A1
WO2021203347A1 PCT/CN2020/083889 CN2020083889W WO2021203347A1 WO 2021203347 A1 WO2021203347 A1 WO 2021203347A1 CN 2020083889 W CN2020083889 W CN 2020083889W WO 2021203347 A1 WO2021203347 A1 WO 2021203347A1
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Prior art keywords
side link
information
resource
terminal device
transmission block
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PCT/CN2020/083889
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English (en)
French (fr)
Inventor
张健
王昕�
纪鹏宇
李国荣
Original Assignee
富士通株式会社
张健
王昕�
纪鹏宇
李国荣
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 富士通株式会社, 张健, 王昕�, 纪鹏宇, 李国荣 filed Critical 富士通株式会社
Priority to JP2022560523A priority Critical patent/JP2023520706A/ja
Priority to CN202080098585.9A priority patent/CN115428490B/zh
Priority to PCT/CN2020/083889 priority patent/WO2021203347A1/zh
Priority to EP20930441.9A priority patent/EP4135370A4/en
Priority to KR1020227034387A priority patent/KR20220149599A/ko
Publication of WO2021203347A1 publication Critical patent/WO2021203347A1/zh
Priority to US17/955,657 priority patent/US20230012983A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the embodiments of the application relate to the field of communication technology.
  • V2X Vehicle to Everything
  • Uu links including uplink and downlink
  • V2X's sending device communicates directly with the receiving device through a sidelink. Communication.
  • New Radio (NR) V2X is an important project of 5G NR. Compared with Long Term Evolution (LTE) V2X, NR V2X needs to support many new scenarios and new services, and it needs to meet higher technical indicators.
  • LTE Long Term Evolution
  • NR V2X defines several physical channels, including physical side link control channel (PSCCH, Physical Sidelink Control Channel), physical side link shared channel (PSSCH, Physical Sidelink Shared Channel), and physical side link feedback channel (PSFCH, Physical Sidelink Feedback Channel is used to carry side link control information (SCI, Sidelink Control Information), side link data, and side link feedback information (for example, HARQ-ACK).
  • PSCCH Physical Sidelink Control Channel
  • PSSCH physical side link shared channel
  • PSFCH Physical Sidelink Feedback Channel is used to carry side link control information (SCI, Sidelink Control Information), side link data, and side link feedback information (for example, HARQ-ACK).
  • NR V2X defines two working modes.
  • NR V2X Mode 1 Mode 1
  • the time-frequency resources used by terminal equipment for V2X communication are scheduled and allocated by network equipment (for example, base stations) through NR Uu links.
  • NR V2X Mode 2 Mode 2
  • the terminal device can autonomously select the time-frequency resource used for V2X communication based on the sensing result.
  • PSCCH carries the 1st stage SCI (first SCI), and the 1st stage SCI is mainly used to reserve resources.
  • PSSCH carries 2nd stage SCI (second SCI) and transport block (TB, Transport Block).
  • the 2nd stage SCI is mainly used for TB demodulation, and the TB is composed of media access control (MAC, Media Access Control) protocol data unit (PDU, Protocol Data Unit) bearer.
  • PSFCH carries side link feedback information (HARQ-ACK).
  • HARQ-ACK side link feedback information
  • the surrounding interference environment is also different. Limited by the signal propagation distance, the sending device cannot perceive all the interference received by the receiving device, so the resources selected by the sending device may not avoid the interference received by the receiving device.
  • embodiments of the present application provide a side link sending and receiving method and device.
  • a side link transmission method including:
  • the second side link control information and the first transmission block are sent through the physical side link shared channel; wherein the first side link control information or the second side link control information or the first transmission block
  • the medium access control protocol data unit indicates or carries trigger information used to trigger the second terminal device to report the side link resource information.
  • a side link sending apparatus including:
  • a first sending unit which sends the first side link control information through the physical side link control channel
  • the second sending unit which sends the second side link control information and the first transmission block through the physical side link shared channel; wherein the first side link control information or the second side link control information or the The media access control protocol data unit of the first transmission block indicates or carries trigger information used to trigger the second terminal device to report side link resource information.
  • a side link receiving method including:
  • the medium access control protocol data unit of the block indicates or carries trigger information used to trigger the second terminal device to report the side link resource information.
  • a side link receiving apparatus including:
  • a first receiving unit which receives the first side link control information sent through the physical side link control channel
  • a second receiving unit which receives the second side link control information and the first transmission block sent through the physical side link shared channel; wherein the first side link control information or the second side link control information is used
  • the media access control protocol data unit of the first transmission block indicates or carries trigger information for triggering the second terminal device to report side link resource information.
  • a communication system including:
  • the first terminal device transmits the first side link control information through the physical side link control channel; and transmits the second side link control information and the first transmission block through the physical side link shared channel; wherein the first transmission block Side link control information or the second side link control information or the medium access control protocol data unit of the first transmission block indicates or carries trigger information; and
  • the second terminal device receives the first side link control information, the second side link control information, and the first transmission block; wherein the trigger information is used to trigger the second terminal device to report the side Link resource information.
  • trigger information is indicated or carried by the MAC PDU of the first SCI or the second SCI or the first transport block, and the trigger information is used to trigger the terminal device to report the side link resource information.
  • the receiving device can report side link resource information (also referred to as collaboration information in this article) to the sending device. This information more accurately reflects the interference received by the receiving device and enables the sending device to Avoid interference more effectively when selecting resources.
  • Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a side link transmission method according to an embodiment of the present application.
  • FIG. 3 is an example diagram of side link transmission according to an embodiment of the present application.
  • FIG. 4 is another example diagram of side link transmission according to an embodiment of the present application.
  • FIG. 5 is another example diagram of side link transmission according to an embodiment of the present application.
  • Fig. 6 is a schematic diagram of a side link sending and receiving method according to an embodiment of the present application.
  • FIG. 7 is another example diagram of side link transmission according to an embodiment of the present application.
  • FIG. 8 is another example diagram of side link transmission according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a side link receiving method according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a side link sending device according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a side link receiving apparatus according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a network device according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terms “first”, “second”, etc. are used to distinguish different elements from the terms, but they do not indicate the spatial arrangement or chronological order of these elements. These elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising”, “including”, “having” and the like refer to the existence of the stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.
  • the term "communication network” or “wireless communication network” can refer to a network that meets any of the following communication standards, such as Long Term Evolution (LTE), and Enhanced Long Term Evolution (LTE-A, LTE-A). Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • LTE-A LTE-A
  • Advanced Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to any stage of communication protocol, for example, it can include but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G , New Radio (NR, New Radio), etc., and/or other currently known or future communication protocols.
  • 1G generation
  • 2G 2.5G
  • 2.75G 3G
  • 4G 4G
  • 4.5G 3G
  • 5G New Radio
  • NR, New Radio New Radio
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device.
  • Network equipment may include but not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may also include remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay), or low-power node (such as femeto, pico, etc.).
  • NodeB Node B
  • eNodeB or eNB evolved Node B
  • gNB 5G base station
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low-power node such as femeto, pico, etc.
  • base station can include some or all of their functions, and each base station can provide communication coverage for a specific geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "user equipment” (UE, User Equipment) or “terminal equipment” (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services.
  • the terminal device may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc.
  • terminal devices may include but are not limited to the following devices: cellular phones (Cellular Phone), personal digital assistants (PDAs, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, Cordless phones, smart phones, smart watches, digital cameras, etc.
  • cellular phones Cellular Phone
  • PDAs personal digital assistants
  • wireless modems wireless communication devices
  • handheld devices machine-type communication devices
  • laptop computers Cordless phones
  • smart phones smart watches, digital cameras, etc.
  • a terminal device may also be a machine or device that performs monitoring or measurement.
  • it may include but not limited to: Machine Type Communication (MTC) terminals, In-vehicle communication terminals, device to device (D2D, Device to Device) terminals, machine to machine (M2M, Machine to Machine) terminals, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • network side or “network device side” refers to a side of the network, which may be a certain base station, and may also include one or more network devices as described above.
  • user side or “terminal side” or “terminal device side” refers to a side of a user or a terminal, which may be a certain UE, and may also include one or more terminal devices as described above.
  • equipment can refer to network equipment or terminal equipment.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a case where a terminal device and a network device are taken as an example.
  • the communication system 100 may include a network device 101 and terminal devices 102 and 103.
  • FIG. 1 only takes two terminal devices and one network device as an example for description, but the embodiment of the present application is not limited to this.
  • the network device 101 and the terminal devices 102 and 103 can perform existing services or future service delivery.
  • these services may include, but are not limited to: enhanced Mobile Broadband (eMBB), large-scale machine type communication (mMTC, massive Machine Type Communication), and high-reliability and low-latency communication (URLLC, Ultra-Reliable and Low). -Latency Communication), etc.
  • FIG. 1 shows that two terminal devices 102 and 103 are both within the coverage of the network device 101, but the application is not limited to this.
  • the two terminal devices 102 and 103 may not be within the coverage area of the network device 101, or one terminal device 102 is within the coverage area of the network device 101 and the other terminal device 103 is outside the coverage area of the network device 101.
  • side link transmission may be performed between the two terminal devices 102 and 103.
  • the two terminal devices 102 and 103 may both perform side link transmission within the coverage area of the network device 101 to implement V2X communication, or both may perform side link transmission outside the coverage area of the network device 101 to implement V2X communication.
  • one terminal device 102 is within the coverage area of the network device 101 and the other terminal device 103 is outside the coverage area of the network device 101 to perform side link transmission to implement V2X communication.
  • the terminal device 102 and/or 103 may be allocated by the network device side link resources (that is, Mode 1), or the side link resources may be independently selected (that is, Mode 2).
  • the embodiment of the present application can also combine the autonomous selection of side link resources (ie, Mode 2) and the allocation of side link resources by the network device (ie, Mode 1); this embodiment of the present application does not limit this.
  • V2X is taken as an example to describe the side link, but the present application is not limited to this, and may also be applicable to side link transmission scenarios other than V2X.
  • side link and “V2X” can be interchanged
  • PSFCH and “side link feedback channel”
  • PSCCH and " Side link control channel” or “side link control information”
  • PSSCH and "side link data channel” or “side link data” can also be interchanged.
  • transmitting or receiving PSSCH can be understood as sending or receiving side link data carried by the PSSCH; sending or receiving PSFCH can be understood as sending or receiving side link feedback information carried by the PSFCH.
  • At least one transmission can be understood as at least one PSSCH/PSCCH transmission or at least one side link data/information transmission, and current transmission can be understood as the current PSSCH/PSCCH transmission or current side link data/information send.
  • the embodiment of the present application provides a side link transmission method, which is described from a terminal device.
  • the terminal device may be called the sending terminal device, the first terminal device
  • send side link data to one or more other terminal devices (may be called the receiving terminal device, the second terminal device) .
  • Fig. 2 is a schematic diagram of a side link transmission method according to an embodiment of the present application. As shown in Fig. 2, the method includes:
  • the first terminal device sends the first side link control information (SCI) to the second terminal device through the physical side link control channel (PSCCH); and
  • the first terminal device sends the second side link control information (SCI) and the first transmission block (TB) to the second terminal device through the physical side link shared channel (PSSCH); wherein the first side link control information Or the second side link control information or the medium access control (MAC) protocol data unit (PDU) of the first transmission block indicates or carries trigger information for triggering the second terminal device to report the side link resource information.
  • SCI second side link control information
  • PSSCH physical side link shared channel
  • MAC medium access control protocol data unit
  • Figure 2 above only schematically illustrates an embodiment of the present application, but the present application is not limited thereto.
  • the order of execution among various operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 2 above.
  • the side link resource information (also referred to herein as cooperation information) includes: a set of side link resources that the second terminal device tends to use, and/or, the side link resource set that the second terminal device does not tend to use Collection of edge link resources.
  • UE B is a transmitting device (first terminal device)
  • UE A is a receiving device (second terminal device)
  • UE B independently selects resources for transmission.
  • UE A sends cooperation information to UE B.
  • the cooperation information may include a set of resources that UE A tends to use, or a set of resources that UE A does not tend to use. This is not the case in this application. Do restrictions.
  • the UE B uses the cooperation information for resource selection and transmission. The embodiment of this application does not restrict how the UE B uses the cooperation information for resource selection (or resource reselection).
  • UE A resource their tendency to use the set S A to a UE B, UE B based on the resources they tend to use perceptual determined set as S B, the UE B when the resource selection may in S B and S A Select resources in the intersection to send. Since the intersection belong to S B, does not select the intersection of the transmitting UE B cause strong interference to other devices; as part of the intersection S A, will not select the intersection A is received by the UE receives a strong interference. In short, sending based on cooperation information can better avoid interference.
  • the side link resource information may be a set of side link resources, or indication information indicating a set of side link resources, such as the index and number of the set of side link resources, or one or more
  • the identification information, index information, etc. of the side link resources are not limited to this in the embodiment of the present application.
  • the existing NR V2X physical channel structure can be reused, so that UE B sends the trigger information together with the TB to UE A, and UE B triggers UE A to report cooperation information.
  • the trigger information is indicated by a certain field in the first side link control information or the second side link control information (SCI).
  • a certain field in the 2nd stage SCI can be used to indicate whether to trigger the reporting of collaboration information.
  • UE A sends cooperation information to UE B.
  • the cooperation information can be carried in the MAC PDU.
  • UE B uses the cooperation information to send one or more TBs.
  • UE B can send the TB that was previously sent together with the trigger information, or it can send a new TB.
  • the first terminal device receives the side link resource information reported by the second terminal device; and the first terminal device sends the first transmission block again according to the side link resource information.
  • FIG. 3 is an example diagram of side link transmission according to an embodiment of the present application.
  • the TB sent with the trigger information is marked as TB#1.
  • the first TB sent based on the cooperation information is TB#1.
  • UE B needs to send aperiodic service TB#1 to UE A, UE B triggers UE A to report cooperation information, and then sends TB#1 to UE A based on the cooperation information.
  • UE B needs to send periodic services to UE A, and UE B triggers UE A to report cooperation information in the process of sending TB#1 of a certain period, and then sends TB#1 of this period based on the cooperation information, which can be based on The collaboration information will continue to be sent to TB#2 in the next cycle.
  • the first terminal device receives the side link resource information reported by the second terminal device; and the first terminal device sends a second transmission block different from the first transmission block according to the side link resource information .
  • Fig. 4 is another example diagram of side link transmission according to an embodiment of the present application.
  • the first TB sent based on the cooperation information is TB#2.
  • UE B needs to send periodic services to UE A
  • UE B triggers UE A to report cooperation information in the process of sending TB#1 of the previous cycle, and then sends TB#2 of the next cycle to UE A based on the cooperation information.
  • the second terminal device triggers a scheduling request (SR, Scheduling Request) to request the network device for side link resources for reporting side link resource information.
  • SR Scheduling Request
  • UE A works in mode 1. After UE A knows that it needs to send cooperation information, it triggers a scheduling request and requests the base station to allocate resources for sending cooperation information.
  • the second terminal device triggers resource selection or reselection, and autonomously selects and determines side link resources for reporting side link resource information.
  • UE A works in mode 2. After UE A knows that it needs to send cooperation information, it triggers resource selection or reselection, and autonomously selects resources for sending cooperation information.
  • the first terminal device uses the first side link control information (SCI) to reserve the side link resources used by the second terminal device to report the side link resource information.
  • SCI side link control information
  • the transmission of TB by UE B needs to meet the delay and reliability requirements of the service. If the TB is sent based on cooperation information, the acquisition of cooperation information also needs to be timely and reliable. If the timeliness and reliability of the resources used by the UE A to send the cooperation information are uncontrollable, it is not conducive to ensuring the delay and reliability of the cooperation information reporting. Therefore, UE B can reserve resources for UE A to send cooperation information while sending trigger information.
  • UE B uses the 2nd stage SCI instruction to trigger the reporting of collaboration information, and reserves the resources for UE A to send the collaboration information in the 1st stage SCI.
  • UE B can control the reporting of cooperation information within the required time delay, and other devices can avoid the resources reserved by UE B through sensing, thereby avoiding interference to the cooperation information, and thus guaranteeing the reporting of cooperation information Latency and reliability.
  • FIG. 5 is another example diagram of side link transmission according to an embodiment of the present application, which schematically illustrates a situation in which side link resources used by a second terminal device to report side link resource information are reserved.
  • UE B triggers the reporting of collaboration information and reserves resources for reporting the collaboration information.
  • the first terminal device sends to the second terminal device the first indication information used by the second terminal device to determine the side link resource information.
  • the first indication information includes at least one or any combination of the following: resource selection window information, resource collection size information, resource frequency domain size information; but the embodiment of the present application is not limited to this.
  • the generation of collaboration information needs to be based on relevant information provided by UE B. Assuming that the collaboration information of UE A includes the resource set that it tends to use, UE A will determine the resource set based on the sensing result. UE A can follow the existing process of determining the candidate resource set in Mode 2, but it needs to be based on the necessary information. This part of the information UE B can be notified to UE A.
  • the resource selection window information includes at least one of the following: the start time position of the resource selection window, the end time position of the resource selection window, and the package delay budget (PDB, Packed Delay Budget); but this embodiment does not Limited to this.
  • PDB package delay budget
  • the resource selection window information determines the time range [n+T1,n+T2] in which UE A determines the resource set, which can ensure that the resources reported by UE A meet the service delay requirements, where n represents the time slot that triggers the report.
  • T1 and T2 can be determined using the related technology of Mode 2.
  • UE B may notify UE A of T1 and T2, or UE B may notify UE A of T2, or UE B may also notify UE A of the PDB.
  • the resource set size information includes at least one of the following: the number of resources included in the side link resource set, and the number of resources included in the side link resource set occupies the total number of resources in the resource pool ⁇ ratio; but the embodiments of this application are not limited to this.
  • the resource set size information is used to determine the reported overhead, that is, the number of resources included in the resource set.
  • UE B may notify UE A of the percentage (x%) of the number of resources in the resource set to the total number of resources in the resource pool.
  • the resource frequency domain size information includes the number of subchannels occupied by the side link resources in the resource set in the frequency domain; the number of subchannels is included in the indication information, or is determined by The frequency domain size of the resource of the transmission block sent together with the trigger information is determined; however, the embodiment of the present application is not limited to this.
  • the frequency domain size information of the resource determines the number of sub-channels occupied by the resources in the resource set in the frequency domain.
  • UE B can inform UE A of this information in an explicit way; or UE A can also obtain this information in an implicit way, for example, according to the frequency domain size of TB#1 sent with the trigger information to determine the resource The frequency domain size of the resources in the collection.
  • the first indication information is indicated or carried by the first side link control information (SCI), or indicated or carried by the second side link control information (SCI), or accessed by the medium of the first transmission block.
  • Control MAC
  • Protocol Data Unit PDU
  • the first transmission block only carries information used to indicate the first indication information.
  • TB#1 is only used to indicate the first indication information. In other words, TB#1 cannot be used to send valid data information. Since no valid data information is sent, the receiving device that reports the side link resource information may feed back ACK/NACK for TB#1, or may not feed back ACK/NACK.
  • Fig. 6 is a schematic diagram of a side link sending and receiving method according to an embodiment of the present application, schematically showing trigger information, indication information, and side link resource information. As shown in Figure 6, the method includes:
  • the first terminal device sends the first side link control information (SCI) to the second terminal device through the physical side link control channel (PSCCH); and
  • the first terminal device sends the second side link control information (SCI) and the first transmission block (TB) to the second terminal device through the physical side link shared channel (PSSCH).
  • SCI second side link control information
  • PSSCH physical side link shared channel
  • the second side link control information or the medium access control (MAC) protocol data unit (PDU) of the first transmission block indicates or carries the trigger information and the first indication information.
  • MAC medium access control
  • the second terminal device determines side link resource information according to the trigger information and the indication information.
  • the second terminal device may perform resource selection or resource reselection using Mode 2 existing side link resource selection methods according to the first indication information, obtain a side link resource set, and obtain it according to the side link resource set Resource information of the side link.
  • the first terminal device receives the side link resource information reported by the second terminal device.
  • the first terminal device sends the first transmission block again according to the side link resource information, or sends a second transmission block different from the first transmission block.
  • Figure 6 above only schematically illustrates an embodiment of the present application, but the present application is not limited thereto.
  • the order of execution among various operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the foregoing content, and are not limited to the description of the foregoing FIG. 6.
  • the trigger information, the indication information, the side link resource information, etc. are schematically described above, and the feedback information of the transmission block is schematically described below.
  • UE B also sends TB#1 when sending the trigger information.
  • the TB#1 sent together with the trigger information can be the initial transmission of TB#1 or the retransmission of TB#1, no matter which In this case, TB#1 sent with trigger information may just enable UE A to successfully demodulate and decode TB#1, but UE B cannot know that TB#1 has been successfully received by UE A, and UE B is receiving it. After the collaboration information, TB#1 may continue to be sent, and this unnecessary sending will cause waste of resources and interference to other devices.
  • the first terminal device receives feedback information sent by the second terminal device indicating whether the first transmission block is correctly received.
  • UE A After UE A receives the trigger information and TB#1, it sends an ACK/NACK for TB#1 to UEB. In this way, if UE B receives an ACK, UE B can know that TB#1 has been received correctly, and therefore can no longer send TB#1, thereby avoiding resource waste and causing interference. Although UE B does not send TB#1, UE B can send TB#2, that is, a TB different from TB#1.
  • the feedback information and the side link resource information are sent together.
  • the feedback information is indicated or carried by the first side link control information or the second side link control information or the medium access control (MAC) protocol data unit (PDU) of the second transmission block sent by the second terminal device.
  • MAC medium access control
  • UE A also sends ACK/NACK to TB#1 when sending cooperation information, that is, ACK/NACK is sent together with the cooperation information.
  • the ACK/NACK can be indicated by the 2nd stage SCI field, or the ACK/NACK can be carried in the MAC PDU.
  • the cooperation information can be carried in the MAC PDU.
  • Sending ACK/NACK together with cooperation information can be used as a scheme that does not depend on PSFCH.
  • PSFCH can be used to send side link ACK/NACK
  • a certain resource pool may not be configured with PSFCH, or even if the resource pool is configured with PSFCH, the device may not be enabled to feed back ACK/NACK through PSFCH. Therefore, sending the ACK/NACK together with the cooperation information is a scheme that does not depend on the PSFCH.
  • the feedback information is sent through a physical side link feedback channel (PSFCH), and the side link resource information is sent through a physical side link shared channel (PSSCH).
  • PSFCH physical side link feedback channel
  • PSSCH physical side link shared channel
  • the first terminal device sends the trigger information and the first transmission block on a side link resource associated with a physical side link feedback channel (PSFCH).
  • UE B sends trigger information and TB#1 on the resource associated with the PSFCH, and UE A sends ACK/NACK for TB#1 through the PSFCH.
  • UE B can independently select the resource for sending trigger information and TB#1, so UE B can select the resource associated with the PSFCH at an appropriate resource location, so that UE A can send ACK/NACK to UE B on the PSFCH.
  • Fig. 7 is another example diagram of side link transmission according to an embodiment of the present application, showing a situation where PSFCH is located between TB#1 and cooperation information in the time domain.
  • the PSFCH may also be located after the cooperation information or in the same time slot as the cooperation information.
  • UE A may or may not send ACK/NACK while sending cooperation information. After UE B receives the ACK/NACK and the cooperation information, it may decide to use the cooperation information to send TB#1 or TB#2.
  • This implementation of UE A sending ACK/NACK through PSFCH can only be used for resource pools configured with PSFCH.
  • resource pools not configured with PSFCH the aforementioned implementation of sending ACK/NACK together with cooperation information can be used.
  • UE A may not be enabled to feed back ACK/NACK through PSFCH, regardless of whether UE A is enabled to feed back ACK/NACK through PSFCH, when UE A receives trigger information from UE B After TB#1, UE A needs to send ACK/NACK through PSFCH.
  • FIG. 8 is another example diagram of side link transmission according to an embodiment of the present application, and two resource pools are taken as an example for schematic illustration.
  • resource pool #1 configured with PSFCH only uses PSFCH to report ACK/NACK; as shown in the lower part of FIG. 8, resource pool #2 not configured with PSFCH reports ACK/NACK together with cooperation information.
  • the second terminal device does not send side link resource information when the first transmission block is correctly received.
  • UE A may only send ACK on PSFCH without sending the cooperation information. For example, when the PSFCH is not behind the cooperation information, because UE B may no longer need the cooperation information after receiving the ACK through the PSFCH (for example, UE B originally wanted to use the cooperation information to send TB#1, but received the information for TB before receiving the cooperation information. # ⁇ ACK), so UE A may not send cooperation information, which can reduce interference to other devices.
  • the first side link control information or the second side link control information or the medium access control (MAC) protocol data unit (PDU) of the first transport block indicates or carries the second indication information.
  • the second indication information indicates whether the second terminal device reports the side link resource information when the first transmission block is correctly received.
  • UE B may indicate whether UE A should report cooperation information under the ACK condition through a field in the 1st stage SCI or 2nd stage SCI. For example, if UE B triggers the report of cooperation information to send aperiodic service TB#1, UE B can instruct UE A not to report cooperation information when TB#1 is ACK; if UE B triggers the purpose of reporting cooperation information In order to send periodic services, since UE B can use the cooperation information to send TB#2, UE B can instruct UE A to still report the cooperation information when TB#1 is ACK. UE B may send the indication of whether to report cooperation information to UE A together with the trigger information.
  • the above-mentioned field indicating whether UE A reports cooperation information under the ACK condition may be a newly defined field, for example, a 1-bit field indicates two states of "yes" or "no".
  • Existing fields can also be reused. For example, the value of the period field in the first stage SCI is 0, which means that collaboration information does not need to be reported; otherwise, it means that collaboration information needs to be reported.
  • not reporting cooperation information means that it will not trigger resource selection or resource reselection; when UE A is working in mode 1, not reporting cooperation information means that it will not trigger a scheduling request (SR, Scheduling Request) ).
  • SR Scheduling Request
  • the side link resource information is used by the first terminal device to send a second transmission block different from the first transmission block.
  • UE B after receiving the cooperation information, UE B can only use the cooperation information for new TB transmission, that is, the cooperation information is not used for TB#1 transmission. Therefore, UE B will not repeatedly send the correctly received TB#1. Can avoid waste of resources and cause interference.
  • UE B with periodic service can make multiple transmissions of TB#1 through autonomous resource selection.
  • UE A is triggered to report the cooperation information.
  • UE B uses the cooperation information for Send TB#2 of the next cycle.
  • trigger information is indicated or carried by the first SCI or the second SCI or the MAC PDU of the first transport block, and the trigger information is used to trigger the terminal device to report side link resource information.
  • the receiving device can report side link resource information (also referred to as collaboration information in this article) to the sending device. This information more accurately reflects the interference received by the receiving device and enables the sending device to Avoid interference more effectively when selecting resources.
  • the embodiment of the present application provides a side link receiving method, which is described from a terminal device.
  • the terminal device (may be called the receiving terminal device, the second terminal device) serves as the receiver of service data, and receives the side link data sent by other terminal devices (may be called the sending terminal device, the first terminal device).
  • the same content as the embodiment of the first aspect will not be repeated.
  • FIG. 9 is a schematic diagram of a side link receiving method according to an embodiment of the present application. As shown in FIG. 9, the method includes:
  • the second terminal device receives the first side link control information (SCI) sent by the first terminal device through the physical side link control channel (PSCCH); and
  • the second terminal device receives the second side link control information (SCI) and the first transmission block (TB) sent by the first terminal device through the physical side link shared channel (PSSCH); wherein the first side link controls
  • the information or the second side link control information or the medium access control (MAC) protocol data unit (PDU) of the first transmission block indicates or carries trigger information for triggering the second terminal device to report the side link resource information.
  • SCI second side link control information
  • TB physical side link shared channel
  • PDU medium access control protocol data unit
  • the side link resource information includes a set of side link resources that the second terminal device tends to use and/or a set of side link resources that the second terminal device does not tend to use.
  • the trigger information is indicated by a certain field in the first side link control information or the second side link control information (SCI).
  • the first side link control information reserves side link resources used by the second terminal device to report side link resource information.
  • the method further includes: the second terminal device receiving the first indication information sent by the first terminal device and used by the second terminal device to determine side link resource information.
  • the first indication information includes at least one or any combination of the following: resource selection window information, resource collection size information, resource frequency domain size information.
  • the resource selection window information includes at least one of the following: a start time position of the resource selection window, an end time position of the resource selection window, and a package delay budget (PDB).
  • PDB package delay budget
  • the resource set size information includes at least one of the following: the number of resources included in the side link resource set, the ratio of the number of resources included in the side link resource set to the total number of resources in the resource pool .
  • the resource frequency domain size information includes the number of sub-channels occupied by side link resources in the frequency domain; the number of sub-channels is included in the indication information, or is determined by the trigger information The frequency domain size (the number of subchannels) of the resources of the transport blocks sent together is determined.
  • the first indication information is indicated or carried by the first side link control information (SCI), or indicated or carried by the second side link control information (SCI), or accessed by the medium of the first transmission block.
  • Control MAC
  • Protocol Data Unit PDU
  • the first transmission block only carries information used to indicate the first indication information.
  • the method further includes: the second terminal device reports side link resource information to the first terminal device; and receiving the first transmission block re-sent according to the side link resource information by the first terminal device, or according to The side link resource information is sent by a second transmission block that is different from the first transmission block.
  • the method further includes: the second terminal device sends to the first terminal device feedback information for indicating whether the first transmission block is correctly received.
  • the feedback information is sent together with the side link resource information.
  • the feedback information is indicated by the first side link control information or the second side link control information or the medium access control (MAC) protocol data unit (PDU) of the second transmission block sent by the second terminal device or Bearer.
  • MAC medium access control
  • the feedback information is sent through the physical side link feedback channel (PSFCH), and the side link resource information is sent through the physical side link shared channel (PSSCH).
  • PSFCH physical side link feedback channel
  • PSSCH physical side link shared channel
  • the first terminal device sends the trigger information and the first transmission block on the side link resource associated with the physical side link feedback channel (PSFCH).
  • PSFCH physical side link feedback channel
  • the second terminal device does not send side link resource information when the first transmission block is correctly received.
  • the second indication information is indicated or carried by the first side link control information or the second side link control information or the medium access control (MAC) protocol data unit (PDU) of the first transmission block.
  • the second indication information indicates whether the second terminal device reports side link resource information when the first transmission block is correctly received.
  • the side link resource information is used by the first terminal device to send a second transmission block different from the first transmission block.
  • trigger information is indicated or carried by the first SCI or the second SCI or the MAC PDU of the first transport block, and the trigger information is used to trigger the terminal device to report side link resource information.
  • the receiving device can report side link resource information (also referred to as collaboration information in this article) to the sending device. This information more accurately reflects the interference received by the receiving device and enables the sending device to Avoid interference more effectively when selecting resources.
  • the embodiment of the present application provides a side link sending device.
  • the apparatus may be, for example, a terminal device, or may be some or some components or components configured in the terminal device, and the same content as the embodiment of the first aspect will not be repeated.
  • FIG. 10 is a schematic diagram of the side link sending apparatus according to an embodiment of the present application. As shown in FIG. 10, the side link sending apparatus 1000 includes:
  • a first sending unit 1001 which sends first side link control information through a physical side link control channel
  • the second sending unit 1002 which sends the second side link control information and the first transmission block through the physical side link shared channel; wherein the first side link control information or the second side link control information or The media access control protocol data unit of the first transmission block indicates or carries trigger information used to trigger the second terminal device to report side link resource information.
  • the side link resource information includes a set of side link resources that the second terminal device tends to use and/or a set of side link resources that the second terminal device does not tend to use.
  • the trigger information is indicated by a certain field in the first side link control information or the second side link control information.
  • the first side link control information reserves side link resources used by the second terminal device to report the side link resource information.
  • the second sending unit 1002 is further configured to send the first indication information used by the second terminal device to determine the side link resource information to the second terminal device.
  • the first indication information includes at least one or any combination of the following: resource selection window information, resource collection size information, resource frequency domain size information.
  • the resource selection window information includes at least one of the following: a start time position of the resource selection window, an end time position of the resource selection window, and a packet delay budget;
  • the resource set size information includes at least one of the following: the number of resources included in the side link resource set, and the ratio of the number of resources included in the side link resource set to the total number of resources in the resource pool;
  • the resource frequency domain size information includes the number of sub-channels occupied by side link resources in the frequency domain; the number of sub-channels is included in the indication information, or is transmitted by the transmission that is sent together with the trigger information.
  • the frequency domain size (the number of subchannels) of the resource of the block is determined.
  • the first indication information is indicated or carried by the first side link control information, or indicated or carried by the second side link control information, or is indicated or carried by the first transmission block.
  • the media access control protocol data unit indicates or carries.
  • the first transmission block only carries information used to indicate the first indication information.
  • the side link sending apparatus 100 may further include:
  • the second sending unit 1002 further sends the first transmission block again according to the side link resource information, or sends a second transmission block different from the first transmission block.
  • the receiving unit 1003 is further configured to receive feedback information sent by the second terminal device indicating whether the first transmission block is correctly received.
  • the feedback information and the side link resource information are sent together.
  • the feedback information is indicated or carried by the first side link control information or the second side link control information or the media access control protocol data unit of the second transmission block sent by the second terminal device.
  • the feedback information is sent through a physical side link feedback channel
  • the side link resource information is sent through a physical side link shared channel.
  • the second sending unit 1002 sends the trigger information and the first transmission block on the side link resource associated with the physical side link feedback channel.
  • the second terminal device does not send the side link resource information when the first transmission block is correctly received.
  • the second indication information is indicated or carried by the first side link control information or the second side link control information or the medium access control protocol data unit of the first transmission block.
  • the second indication information indicates whether the second terminal device reports the side link resource information when the first transmission block is correctly received.
  • the side link resource information is used by the first terminal device to send a second transmission block different from the first transmission block.
  • the side link sending apparatus 1000 may also include other components or modules.
  • the side link sending apparatus 1000 may also include other components or modules.
  • FIG. 10 only exemplarily shows the connection relationship or signal direction between the various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the foregoing components or modules may be implemented by hardware facilities such as a processor, a memory, a transmitter, and a receiver; the implementation of this application does not limit this.
  • trigger information is indicated or carried by the first SCI or the second SCI or the MAC PDU of the first transport block, and the trigger information is used to trigger the terminal device to report side link resource information.
  • the receiving device can report side link resource information (also referred to as collaboration information in this article) to the sending device. This information more accurately reflects the interference received by the receiving device and enables the sending device to Avoid interference more effectively when selecting resources.
  • the embodiment of the present application provides a side link receiving device.
  • the apparatus may be, for example, a terminal device, or may be some or some components or components configured in the terminal device, and the same content as the embodiment of the second aspect will not be repeated.
  • FIG. 11 is a schematic diagram of a side link receiving apparatus according to an embodiment of the present application. As shown in FIG. 11, the side link receiving apparatus 1100 includes:
  • the first receiving unit 1101 which receives the first side link control information sent through the physical side link control channel;
  • the second receiving unit 1102 which receives the second side link control information and the first transmission block sent through the physical side link shared channel; wherein the first side link control information or the second side link control information
  • the information or the media access control protocol data unit of the first transmission block indicates or carries trigger information used to trigger the second terminal device to report side link resource information.
  • the side link receiving apparatus 1100 may further include:
  • the sending unit 1103 reports the side link resource information.
  • the side link receiving apparatus 1100 may also include other components or modules, and for the specific content of these components or modules, reference may be made to related technologies.
  • FIG. 11 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the foregoing components or modules may be implemented by hardware facilities such as a processor, a memory, a transmitter, and a receiver; the implementation of this application does not limit this.
  • trigger information is indicated or carried by the first SCI or the second SCI or the MAC PDU of the first transport block, and the trigger information is used to trigger the terminal device to report side link resource information.
  • the receiving device can report side link resource information (also referred to as collaboration information in this article) to the sending device. This information more accurately reflects the interference received by the receiving device and enables the sending device to Avoid interference more effectively when selecting resources.
  • An embodiment of the present application also provides a communication system, which may refer to FIG. 1, and the same content as the embodiments of the first aspect to the fourth aspect will not be repeated.
  • the communication system includes:
  • the first terminal device transmits the first side link control information through the physical side link control channel; and transmits the second side link control information and the first transmission block through the physical side link shared channel; wherein the first transmission block Side link control information or the second side link control information or the medium access control protocol data unit of the first transmission block indicates or carries trigger information; and
  • the second terminal device receives the first side link control information, the second side link control information, and the first transmission block; wherein the trigger information is used to trigger the second terminal device to report the side Link resource information.
  • the embodiments of the present application also provide a network device, which may be a base station, for example, but the present application is not limited to this, and may also be other network devices.
  • a network device which may be a base station, for example, but the present application is not limited to this, and may also be other network devices.
  • FIG. 12 is a schematic diagram of the structure of a network device according to an embodiment of the present application.
  • the network device 1200 may include: a processor 1210 (for example, a central processing unit CPU) and a memory 1220; the memory 1220 is coupled to the processor 1210.
  • the memory 1220 can store various data; in addition, it also stores an information processing program 1230, and the program 1230 is executed under the control of the processor 1210.
  • the network device 1200 may further include: a transceiver 1240, an antenna 1250, etc.; wherein the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the network device 1200 does not necessarily include all the components shown in FIG. 12; in addition, the network device 1200 may also include components not shown in FIG. 12, and reference may be made to the prior art.
  • the embodiments of the present application also provide a terminal device, but the present application is not limited to this, and may also be other devices.
  • FIG. 13 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1300 may include a processor 1310 and a memory 1320; the memory 1320 stores data and programs, and is coupled to the processor 1310. It is worth noting that this figure is exemplary; other types of structures can also be used to supplement or replace this structure to achieve telecommunication functions or other functions.
  • the processor 1310 may be configured to execute a program to implement the side link transmission method as described in the embodiment of the first aspect.
  • the processor 1310 may be configured to perform the following control: send the first side link control information (SCI) through the physical side link control channel (PSCCH); and send the second side link through the physical side link shared channel (PSSCH) Link control information (SCI) and the first transport block (TB); wherein the first side link control information or the second side link control information or the medium access control (MAC) )
  • a protocol data unit (PDU) indicates or carries trigger information used to trigger the reporting of side link resource information.
  • the processor 1310 may be configured to execute a program to implement the side link receiving method as described in the embodiment of the second aspect.
  • the processor 1310 may be configured to perform the following control: receive the first side link control information sent through the physical side link control channel; and receive the second side link control information sent through the physical side link shared channel and The first transmission block; wherein the first side link control information or the second side link control information or the medium access control protocol data unit of the first transmission block is indicated or carried to trigger the reporting side link Trigger information for resource information.
  • the terminal device 1300 may further include: a communication module 1330, an input unit 1340, a display 1350, and a power supply 1360. Among them, the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the terminal device 1300 does not necessarily include all the components shown in FIG. 13, and the above-mentioned components are not necessary; in addition, the terminal device 1300 may also include components not shown in FIG. There is technology.
  • An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the side link transmission method described in the embodiment of the first aspect.
  • An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the side link transmission method described in the embodiment of the first aspect.
  • An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the side link receiving method described in the embodiment of the second aspect.
  • An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the side link receiving method described in the embodiment of the second aspect.
  • the above devices and methods of this application can be implemented by hardware, or can be implemented by hardware combined with software.
  • This application relates to such a computer-readable program, when the program is executed by a logic component, the logic component can realize the above-mentioned device or constituent component, or the logic component can realize the above-mentioned various methods Or steps.
  • This application also relates to storage media used to store the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, etc.
  • the method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams shown in the figure may correspond to each software module of the computer program flow or each hardware module.
  • These software modules can respectively correspond to the steps shown in the figure.
  • These hardware modules can be implemented by solidifying these software modules by using a field programmable gate array (FPGA), for example.
  • FPGA field programmable gate array
  • the software module can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be a component of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described in the drawings can be implemented as general-purpose processors, digital signal processors (DSPs) for performing the functions described in this application. ), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any appropriate combination thereof.
  • DSPs digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, and multiple micro-processing Processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • a side link transmission method including:
  • the first terminal device sends the first side link control information (SCI) to the second terminal device through the physical side link control channel (PSCCH); and
  • the second side link control information (SCI) and the first transmission block (TB) are sent to the second terminal device through the physical side link shared channel (PSSCH); wherein the first side link control information or the The second side link control information or the medium access control (MAC) protocol data unit (PDU) of the first transmission block indicates or bears trigger information for triggering the second terminal device to report the side link resource information.
  • PSSCH physical side link shared channel
  • MAC medium access control
  • Supplement 2 The method according to Supplement 1, wherein the side link resource information includes a set of side link resources that the second terminal device tends to use and/or a set of side link resources that the second terminal device does not tend to use Collection of edge link resources.
  • Supplement 3 The method according to Supplement 1 or 2, wherein the trigger information is indicated by a certain field in the first side link control information or the second side link control information (SCI) .
  • Supplement 4 The method according to any one of Supplements 1 to 3, wherein the method further includes:
  • the first terminal device uses the first side link control information (SCI) to reserve side link resources used by the second terminal device to report the side link resource information.
  • SCI side link control information
  • Supplement 5 The method according to any one of Supplements 1 to 4, wherein the method further includes:
  • the first terminal device sends the first indication information used by the second terminal device to determine the side link resource information to the second terminal device.
  • Appendix 6 The method according to Appendix 5, wherein the first indication information includes at least one or any combination of the following: resource selection window information, resource collection size information, and resource frequency domain size information.
  • Appendix 7 The method according to Appendix 6, wherein the resource selection window information includes at least one of the following: the start time position of the resource selection window, the end time position of the resource selection window, and the package delay budget (PDB) .
  • the resource selection window information includes at least one of the following: the start time position of the resource selection window, the end time position of the resource selection window, and the package delay budget (PDB) .
  • PDB package delay budget
  • Appendix 8 The method according to appendix 6, wherein the resource set size information includes at least one of the following: the number of resources included in the side link resource set, and the number of resources included in the side link resource set The ratio of the number of resources to the total number of resources in the resource pool.
  • Appendix 9 The method according to Appendix 6, wherein the resource frequency domain size information includes the number of sub-channels occupied by side link resources in the frequency domain; the number of sub-channels is included in the In the indication information, or determined by the number of subchannels of the resource of the transport block sent together with the trigger information.
  • Supplement 10 The method according to any one of Supplements 5 to 9, wherein the first indication information is indicated or carried by the first side link control information (SCI), or by the second side Link control information (SCI) indicates or is carried, or is indicated or carried by a medium access control (MAC) protocol data unit (PDU) of the first transmission block.
  • SCI first side link control information
  • SCI second side Link control information
  • PDU protocol data unit
  • Supplement 11 The method according to any one of Supplements 5 to 10, wherein the first transmission block only carries information used to indicate the first indication information.
  • Supplement 12 The method according to any one of Supplements 1 to 11, wherein the method further includes:
  • the first terminal device sends the first transmission block again according to the side link resource information, or sends a second transmission block different from the first transmission block.
  • Appendix 13 The method according to Appendix 12, wherein the method further includes:
  • the first terminal device receives feedback information that is sent by the second terminal device and indicates whether the first transmission block is correctly received.
  • Supplement 14 The method according to Supplement 13, wherein the feedback information and the side link resource information are sent together.
  • Supplement 15 The method according to Supplement 14, wherein the feedback information is the first side link control information or the second side link control information or the medium of the second transmission block sent by the second terminal device Access control (MAC) protocol data unit (PDU) indication or bearer.
  • MAC terminal device Access control
  • PDU protocol data unit
  • Appendix 16 The method according to appendix 13, wherein the feedback information is transmitted through a physical side link feedback channel (PSFCH), and the side link resource information is transmitted through a physical side link shared channel (PSSCH) send.
  • PSFCH physical side link feedback channel
  • PSSCH physical side link shared channel
  • Appendix 17 The method according to Appendix 16, wherein the first terminal device sends the trigger information and the first transmission on a side link resource associated with a physical side link feedback channel (PSFCH) Piece.
  • PSFCH physical side link feedback channel
  • Supplement 18 The method according to any one of Supplements 1 to 11, wherein the second terminal device does not send the side link resource information when the first transmission block is correctly received.
  • Supplement 19 The method according to any one of Supplements 1 to 18, wherein the first side link control information or the second side link control information or the medium access of the first transmission block A control (MAC) protocol data unit (PDU) indicates or carries second indication information, and the second indication information indicates whether the second terminal device reports the side chain when the first transmission block is correctly received Road resource information.
  • MAC medium access of the first transmission block A control
  • Supplement 20 The method according to any one of Supplements 1 to 19, wherein the side link resource information is used by the first terminal device to send a second transmission block different from the first transmission block .
  • a side link receiving method including:
  • the second terminal device receives the first side link control information (SCI) sent by the first terminal device through the physical side link control channel (PSCCH); and
  • Supplement 22 The method according to Supplement 21, wherein the side link resource information includes a set of side link resources that the second terminal device tends to use and/or a set of side link resources that the second terminal device does not tend to use Collection of edge link resources.
  • Supplement 23 The method according to Supplement 21 or 22, wherein the trigger information is indicated by a certain field in the first side link control information or the second side link control information (SCI) .
  • Supplement 24 The method according to any one of Supplements 21 to 23, wherein the first side link control information (SCI) is reserved by the second terminal device for reporting the side link resources Information side link resources.
  • SCI side link control information
  • Supplement 25 The method according to any one of Supplements 21 to 24, wherein the method further includes:
  • the second terminal device receives the first indication information sent by the first terminal device and used by the second terminal device to determine the side link resource information.
  • Supplement 26 The method according to Supplement 25, wherein the first indication information includes at least one or any combination of the following: resource selection window information, resource collection size information, and resource frequency domain size information.
  • Supplement 27 The method according to Supplement 26, wherein the resource selection window information includes at least one of the following: a start time position of the resource selection window, an end time position of the resource selection window, and a package delay budget (PDB) .
  • PDB package delay budget
  • Supplement 28 The method according to Supplement 26, wherein the resource set size information includes at least one of the following: the number of resources included in the side link resource set, and the number of resources included in the side link resource set The ratio of the number of resources to the total number of resources in the resource pool.
  • Appendix 29 The method according to Appendix 26, wherein the resource frequency domain size information includes the number of sub-channels occupied by side link resources in the frequency domain; the number of sub-channels is included in the In the indication information, or determined by the number of subchannels of the resource of the transport block sent together with the trigger information.
  • Supplement 30 The method according to any one of Supplements 25 to 29, wherein the first indication information is indicated or carried by the first side link control information (SCI), or by the second side Link control information (SCI) indicates or is carried, or is indicated or carried by a medium access control (MAC) protocol data unit (PDU) of the first transmission block.
  • SCI first side link control information
  • SCI second side Link control information
  • PDU protocol data unit
  • Supplement 31 The method according to any one of Supplements 25 to 30, wherein the first transmission block only carries information used to indicate the first indication information.
  • Supplement 32 The method according to any one of Supplements 21 to 31, wherein the method further includes:
  • the second terminal device triggers a scheduling request (SR) to request the network device for side link resources for reporting the side link resource information.
  • SR scheduling request
  • Supplement 33 The method according to any one of Supplements 21 to 31, wherein the method further includes:
  • the second terminal device triggers resource selection or reselection, and autonomously selects and determines the side link resource for reporting the side link resource information.
  • Supplement 34 The method according to any one of Supplements 21 to 33, wherein the method further includes:
  • the second terminal device reports the side link resource information to the first terminal device.
  • Supplement 35 The method according to Supplement 34, wherein the method further includes:
  • the second terminal device sends feedback information used to indicate whether the first transmission block is correctly received to the first terminal device.
  • Supplement 36 The method according to Supplement 35, wherein the feedback information and the side link resource information are sent together.
  • Supplement 37 The method according to Supplement 36, wherein the feedback information is the first side link control information or the second side link control information or the medium of the second transmission block sent by the second terminal device Access control (MAC) protocol data unit (PDU) indication or bearer.
  • MAC terminal device Access control
  • PDU protocol data unit
  • Supplement 38 The method according to Supplement 35, wherein the feedback information is transmitted through a physical side link feedback channel (PSFCH), and the side link resource information is transmitted through a physical side link shared channel (PSSCH) send.
  • PSFCH physical side link feedback channel
  • PSSCH physical side link shared channel
  • Supplement 39 The method according to Supplement 38, wherein the first terminal device sends the trigger information and the first transmission on a side link resource associated with a physical side link feedback channel (PSFCH) Piece.
  • PSFCH physical side link feedback channel
  • Supplement 40 The method according to any one of Supplements 21 to 31, wherein the second terminal device does not send the side link resource information when the first transmission block is correctly received.
  • Supplement 41 The method according to any one of Supplements 21 to 40, wherein the first side link control information or the second side link control information or the medium access of the first transmission block A control (MAC) protocol data unit (PDU) indicates or carries second indication information, and the second indication information indicates whether the second terminal device reports the side chain when the first transmission block is correctly received Road resource information.
  • MAC transmission block A control
  • Supplement 42 The method according to any one of Supplements 21 to 41, wherein the side link resource information is used by the first terminal device to send a second transmission block different from the first transmission block .
  • Appendix 43 A terminal device comprising a memory and a processor, the memory storing a computer program, and the processor is configured to execute the computer program to implement the side described in any one of appendix 1 to 20 Link sending method.
  • Appendix 44 A terminal device comprising a memory and a processor, the memory storing a computer program, and the processor is configured to execute the computer program to implement the side described in any one of appendix 21 to 42 Link receiving method.
  • Supplement 45 A communication system, including the terminal device described in Supplement 43 and the terminal device described in Supplement 44.

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Abstract

本申请实施例提供一种边链路发送和接收方法以及装置。所述边链路发送方法包括：通过物理边链路控制信道发送第一边链路控制信息；以及通过物理边链路共享信道发送第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载用于触发第二终端设备上报边链路资源信息的触发信息。

Description

边链路发送和接收方法以及装置 技术领域
本申请实施例涉及通信技术领域。
背景技术
V2X(Vehicle to Everything)是一种车辆通信技术，相比于使用Uu链路(包括上行链路和下行链路)的蜂窝通信，V2X的发送设备通过边链路(sidelink)与接收设备直接进行通信。
新无线(NR，New Radio)V2X是5G NR的重要项目，相比于长期演进(LTE，Long Term Evolution)V2X，NR V2X需要支持诸多新场景和新业务，并且需要满足更高的技术指标。
NR V2X定义了几种物理信道，包括物理边链路控制信道(PSCCH，Physical Sidelink Control Channel)、物理边链路共享信道(PSSCH，Physical Sidelink Shared Channel)和物理边链路反馈信道(PSFCH，Physical Sidelink Feedback Channel)，分别用于承载边链路控制信息(SCI，Sidelink Control Information)、边链路数据和边链路反馈信息(例如HARQ-ACK)。
NR V2X定义了两种工作模式。对于NR V2X模式1(Mode 1)，终端设备用于V2X通信的时频资源由网络设备(例如基站)通过NR Uu链路进行调度和分配。对于NR V2X模式2(Mode 2)，终端设备可以基于感知(sensing)结果，自主地对用于V2X通信的时频资源进行选择。
应该注意，上面对技术背景的介绍只是为了方便对本申请的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本申请的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
PSCCH承载1st stage SCI(第一SCI)，1st stage SCI主要用于预留资源。PSSCH承载2nd stage SCI(第二SCI)以及传输块(TB，Transport Block)，其中2nd stage SCI主要用于TB解调，该TB由介质访问控制(MAC，Media Access Control)协议数据 单元(PDU，Protocol Data Unit)承载。PSFCH承载边链路反馈信息(HARQ-ACK)。边链路发送所使用的资源位于某一资源池内。
发明人发现：工作在模式2的终端设备可以感知到周围的潜在干扰，从而能够避免选择受到较强干扰的资源进行发送。但是，由于发送设备和接收设备所处地理位置不同，其周围的干扰环境也是不同的。受信号传播距离的限制，发送设备无法感知到接收设备所受到的所有干扰，因此发送设备选择的资源可能并没有避开接收设备所受到的干扰。
针对上述问题的至少之一，本申请实施例提供一种边链路发送和接收方法以及装置。
根据本申请实施例的一个方面，提供一种边链路发送方法，包括：
通过物理边链路控制信道发送第一边链路控制信息；以及
通过物理边链路共享信道发送第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载用于触发第二终端设备上报边链路资源信息的触发信息。
根据本申请实施例的另一个方面，提供一种边链路发送装置，包括：
第一发送单元，其通过物理边链路控制信道发送第一边链路控制信息；以及
第二发送单元，其通过物理边链路共享信道发送第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载用于触发第二终端设备上报边链路资源信息的触发信息。
根据本申请实施例的另一个方面，提供一种边链路接收方法，包括：
接收通过物理边链路控制信道发送的第一边链路控制信息；以及
接收通过物理边链路共享信道发送的第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载用于触发第二终端设备上报边链路资源信息的触发信息。
根据本申请实施例的另一个方面，提供一种边链路接收装置，包括：
第一接收单元，其接收通过物理边链路控制信道发送的第一边链路控制信息；及
第二接收单元，其接收通过物理边链路共享信道发送的第二边链路控制信息和第 一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载用于触发第二终端设备上报边链路资源信息的触发信息。
根据本申请实施例的另一个方面，提供一种通信系统，包括：
第一终端设备，其通过物理边链路控制信道发送第一边链路控制信息；以及通过物理边链路共享信道发送第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载触发信息；以及
第二终端设备，其接收所述第一边链路控制信息、所述第二边链路控制信息和所述第一传输块；其中所述触发信息用于触发所述第二终端设备上报边链路资源信息。
本申请实施例的有益效果之一在于：由第一SCI或第二SCI或第一传输块的MAC PDU指示或承载触发信息，该触发信息用于触发终端设备上报边链路资源信息。通过发送设备触发接收设备进行上报，接收设备可以向发送设备上报边链路资源信息(本文也称为协作信息)，该信息更加准确地反映了接收设备所受到的干扰情况，能够使得发送设备在选择资源时更加有效地避免干扰。
参照后文的说明和附图，详细公开了本申请的特定实施方式，指明了本申请的原理可以被采用的方式。应该理解，本申请的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本申请的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本申请实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本申请实施例的通信系统的示意图；
图2是本申请实施例的边链路发送方法的一示意图；
图3是本申请实施例的边链路发送的一示例图；
图4是本申请实施例的边链路发送的另一示例图；
图5是本申请实施例的边链路发送的另一示例图；
图6是本申请实施例的边链路发送和接收方法的一示意图；
图7是本申请实施例的边链路发送的另一示例图；
图8是本申请实施例的边链路发送的另一示例图；
图9是本申请实施例的边链路接收方法的一示意图；
图10是本申请实施例的边链路发送装置的一示意图；
图11是本申请实施例的边链路接收装置的一示意图；
图12是本申请实施例的网络设备的示意图；
图13是本申请实施例的终端设备的示意图。
具体实施方式
参照附图，通过下面的说明书，本申请的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本申请的特定实施方式，其表明了其中可以采用本申请的原则的部分实施方式，应了解的是，本申请不限于所描述的实施方式，相反，本申请包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本申请实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“所述”应理解为既包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本申请实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A， LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division Multiple Access)、高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信系统中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本申请实施例中，术语“网络设备”例如是指通信系统中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备：基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
其中，基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femeto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本申请实施例中，术语“用户设备”(UE，User Equipment)或者“终端设备”(TE，Terminal Equipment或Terminal Device)例如是指通过网络设备接入通信网络并接收网络服务的设备。终端设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
其中，终端设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，终端设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type  Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、机器到机器(M2M，Machine to Machine)终端，等等。
此外，术语“网络侧”或“网络设备侧”是指网络的一侧，可以是某一基站，也可以包括如上的一个或多个网络设备。术语“用户侧”或“终端侧”或“终端设备侧”是指用户或终端的一侧，可以是某一UE，也可以包括如上的一个或多个终端设备。本文在没有特别指出的情况下，“设备”可以指网络设备，也可以指终端设备。
以下通过示例对本申请实施例的场景进行说明，但本申请不限于此。
图1是本申请实施例的通信系统的示意图，示意性说明了以终端设备和网络设备为例的情况，如图1所示，通信系统100可以包括网络设备101和终端设备102、103。为简单起见，图1仅以两个终端设备和一个网络设备为例进行说明，但本申请实施例不限于此。
在本申请实施例中，网络设备101和终端设备102、103之间可以进行现有的业务或者未来可实施的业务发送。例如，这些业务可以包括但不限于：增强的移动宽带(eMBB，enhanced Mobile Broadband)、大规模机器类型通信(mMTC，massive Machine Type Communication)和高可靠低时延通信(URLLC，Ultra-Reliable and Low-Latency Communication)，等等。
值得注意的是，图1示出了两个终端设备102、103均处于网络设备101的覆盖范围内，但本申请不限于此。两个终端设备102、103可以均不在网络设备101的覆盖范围内，或者一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外。
在本申请实施例中，两个终端设备102、103之间可以进行边链路发送。例如，两个终端设备102、103可以都在网络设备101的覆盖范围之内进行边链路发送以实现V2X通信，也可以都在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信，还可以一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信。
在本申请实施例中，终端设备102和/或103可以由网络设备分配边链路资源(即采用Mode 1)，也可以自主地选择边链路资源(即采用Mode 2)。当然，本申请实施例也可以将自主选择边链路资源(即采用Mode 2)和由网络设备分配边链路资源(即采用Mode 1)结合起来；本申请实施例不对此进行限制。
在本申请实施例中，以V2X为例对边链路进行说明，但本申请不限于此，还可以适用于V2X以外的边链路发送场景。在以下的说明中，在不引起混淆的情况下，术语“边链路”和“V2X”可以互换，术语“PSFCH”和“边链路反馈信道”可以互换，术语“PSCCH”和“边链路控制信道”或“边链路控制信息”可以互换，术语“PSSCH”和“边链路数据信道”或“边链路数据”也可以互换。
另外，发送(transmitting)或接收(receiving)PSSCH可以理解为发送或接收由PSSCH承载的边链路数据；发送或接收PSFCH可以理解为发送或接收由PSFCH承载的边链路反馈信息。至少一次发送(transmission，也可称为传输)可以理解为至少一次PSSCH/PSCCH发送或者至少一次边链路数据/信息发送，当前发送可以理解为当前PSSCH/PSCCH发送或者当前边链路数据/信息发送。
第一方面的实施例
本申请实施例提供一种边链路发送方法，从终端设备进行说明。其中该终端设备(可称为发送终端设备，第一终端设备)作为业务数据的发送方，向一个或多个其他终端设备(可称为接收终端设备，第二终端设备)发送边链路数据。
图2是本申请实施例的边链路发送方法的一示意图，如图2所示，该方法包括：
201，第一终端设备通过物理边链路控制信道(PSCCH)向第二终端设备发送第一边链路控制信息(SCI)；以及
202，第一终端设备通过物理边链路共享信道(PSSCH)向第二终端设备发送第二边链路控制信息(SCI)和第一传输块(TB)；其中由第一边链路控制信息或者第二边链路控制信息或者第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载用于触发所述第二终端设备上报边链路资源信息的触发信息。
值得注意的是，以上附图2仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图2的记载。
在一些实施例中，边链路资源信息(本文也称为协作信息)包括：所述第二终端设备倾向使用的边链路资源集合，和/或，所述第二终端设备不倾向使用的边链路资源集合。
例如，假设UE B是发送设备(第一终端设备)，UE A是接收设备(第二终端设备)，并且UE B自主选择资源进行发送。在UE B触发UE A上报后，UE A向UE B发送协作信息，该协作信息可以包括UE A倾向使用的资源集合，或者UE A不倾向使用的资源集合等等，本申请实施例对此不做限制。UE B使用协作信息进行资源选择和发送，本申请实施例对UE B如何使用协作信息进行资源选择(或资源重选)不做限制。
再例如，UE A将自己倾向使用的资源集合S A发送给UE B，UE B基于感知确定的自己倾向使用的资源集合为S B，则UE B在资源选择时可以在S B和S A的交集内选择资源进行发送。由于交集属于S B，选择交集不会使UE B的发送对其他设备造成较强干扰；由于交集属于S A，选择交集也不会使UE A的接收受到较强干扰。总之，基于协作信息进行发送可以更好地避免干扰。
在具体实施时，边链路资源信息可以是边链路资源集合，也可以是指示边链路资源集合的指示信息，例如边链路资源集合的索引、编号等，还可以是一个或多个边链路资源的标识信息、索引信息等等，本申请实施例不限于此。
在一些实施例中，为减少对标准化的影响，可以重用NR V2X现有物理信道结构，令UE B将触发信息连同TB一起发送给UE A，由UE B触发UE A来上报协作信息。例如，触发信息由第一边链路控制信息或第二边链路控制信息(SCI)中的某一字段指示。
例如，可以使用2nd stage SCI中的某一字段指示是否触发协作信息的上报。在接收到触发信息后，UE A向UE B发送协作信息。协作信息可以被承载在MAC PDU中。在接收到协作信息后，UE B将该协作信息用于发送一个或多个TB，UE B可以发送之前连同触发信息一起发送过的TB，也可以发送新的TB。
在一些实施例中，第一终端设备接收第二终端设备上报的边链路资源信息；以及第一终端设备根据所述边链路资源信息再次发送所述第一传输块。
图3是本申请实施例的边链路发送的一示例图。为方便说明，将连同触发信息一起发送的TB记为TB#1。如图3所示，UE B在接收到协作信息后，基于该协作信息发送的第一个TB是TB#1。
例如，UE B需要向UE A发送非周期业务的TB#1，UE B触发UE A上报协作信息，然后基于协作信息发送TB#1给UE A。又例如，UE B需要向UE A发送周期性 业务，UE B在发送某个周期的TB#1的过程中触发UE A上报协作信息，然后基于协作信息发送该周期的TB#1，并可以基于协作信息在之后继续发送下一个周期的TB#2。
在一些实施例中，第一终端设备接收第二终端设备上报的边链路资源信息；以及第一终端设备根据所述边链路资源信息发送不同于所述第一传输块的第二传输块。
图4是本申请实施例的边链路发送的另一示例图。如图4所示，UE B在接收到协作信息后，基于该协作信息发送的第一个TB是TB#2。例如，UE B需要向UE A发送周期性业务，UE B在发送前一个周期的TB#1的过程中触发UE A上报协作信息，然后基于协作信息发送下一个周期的TB#2给UE A。
在一些实施例中，第二终端设备触发调度请求(SR，Scheduling Request)，向网络设备请求用于上报边链路资源信息的边链路资源。
例如，UE A工作在模式1，UE A在得知需要发送协作信息后，触发调度请求，请求基站为其分配用于发送协作信息的资源。
在一些实施例中，第二终端设备触发资源选择或重选，自主地选择和确定用于上报边链路资源信息的边链路资源。
例如，UE A工作在模式2，UE A在得知需要发送协作信息后，触发资源选择或重选，自主选择用于发送协作信息的资源。
在一些实施例中，第一终端设备使用第一边链路控制信息(SCI)预留被第二终端设备用于上报边链路资源信息的边链路资源。
例如，UE B对TB的发送需要满足业务的时延和可靠性要求，如果基于协作信息发送TB，协作信息的获得也需要及时和可靠。如果UE A用来发送协作信息的资源的时效性和可靠性不可控，则不利于保障协作信息上报的时延和可靠性。因此，UE B可以在发送触发信息的同时预留UE A发送协作信息的资源。
例如，UE B使用2nd stage SCI指示触发协作信息上报，在1st stage SCI中预留UE A用于发送协作信息的资源。通过资源预留，UE B可以控制协作信息在要求的时延内上报，并且其他设备通过感知可以避开UE B预留的资源，从而可以避免对协作信息造成干扰，因此可以保障协作信息上报的时延和可靠性。
图5是本申请实施例的边链路发送的另一示例图，对预留被第二终端设备用于上报边链路资源信息的边链路资源的情况进行了示意性说明。如图5所示，UE B触发协作信息上报，同时预留协作信息上报的资源。
在一些实施例中，第一终端设备向第二终端设备发送被所述第二终端设备用于确定所述边链路资源信息的第一指示信息。所述第一指示信息包括如下至少之一或任意组合：资源选择窗信息、资源集合大小信息、资源频域大小信息；但本申请实施例不限于此。
例如，协作信息的产生需要基于UE B提供的相关信息。假设UE A的协作信息包含倾向使用的资源集合，则UE A会基于感知结果决定资源集合，UE A可以遵循Mode 2现有的决定候选资源集合的流程，但需要基于必要的信息，这部分信息可以由UE B通知给UE A。
在一些实施例中，资源选择窗信息包括如下至少之一：资源选择窗的起始时间位置、资源选择窗的结束时间位置、包延迟预算(PDB，Packed Delay Budget)；但本申请实施例不限于此。
例如，资源选择窗信息决定UE A在哪一段时间范围[n+T1,n+T2]内确定资源集合，可以保证UE A上报的资源满足业务时延要求，其中n表示触发上报的时隙，T1、T2可以使用Mode 2的相关技术确定。UE B可以将T1、T2通知给UE A，或者，UE B可以将T2通知给UE A，或者，UE B也可以将PDB通知给UE A。
在一些实施例中，资源集合大小信息包括如下至少之一：边链路资源集合中所包含的资源个数、所述边链路资源集合中所包含的资源个数占资源池总资源个数的比例；但本申请实施例不限于此。
例如，资源集合大小信息用于决定上报的开销，即资源集合中所包含的资源的个数。例如，UE B可以将资源集合中资源个数占资源池总资源个数的百分比(x％)通知给UE A。
在一些实施例中，资源频域大小信息包括资源集合中的边链路资源在频域上所占的子信道个数；所述子信道个数被包含在所述指示信息中，或者由与所述触发信息一起发送的传输块的资源的频域大小确定；但本申请实施例不限于此。
例如，资源频域大小信息决定了资源集合中的资源在频域上所占的子信道(sub-channel)个数。UE B可以通过显式方式将这一信息通知给UE A；或者，UE A也可以通过隐式方式获得这一信息，例如根据伴随触发信息一同发送的TB#1的频域大小，来确定资源集合中资源的频域大小。
在一些实施例中，第一指示信息由第一边链路控制信息(SCI)指示或承载，或 者由第二边链路控制信息(SCI)指示或承载，或者由第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载。
在一些实施例中，第一传输块仅承载用于指示所述第一指示信息的信息。
例如，TB#1只用来指示第一指示信息，换句话说，TB#1不能用于发送有效的数据信息。由于没有发送有效的数据信息，所以上报边链路资源信息的接收设备针对TB#1可以反馈ACK/NACK，也可以不反馈ACK/NACK。
图6是本申请实施例的边链路发送和接收方法的一示意图，示意性示出了触发信息、指示信息和边链路资源信息的情况。如图6所示，该方法包括：
601，第一终端设备通过物理边链路控制信道(PSCCH)向第二终端设备发送第一边链路控制信息(SCI)；以及
602，第一终端设备通过物理边链路共享信道(PSSCH)向第二终端设备发送第二边链路控制信息(SCI)和第一传输块(TB)；
其中，例如由第二边链路控制信息或者第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载触发信息和第一指示信息。
603，第二终端设备根据触发信息和指示信息确定边链路资源信息；
例如，第二终端设备可以根据该第一指示信息，使用Mode 2现有的边链路资源选择方式进行资源选择或者资源重选，获得边链路资源集合，并根据该边链路资源集合获得该边链路资源信息。
604，第一终端设备接收第二终端设备上报的边链路资源信息；以及
605，第一终端设备根据边链路资源信息再次发送第一传输块，或者发送不同于第一传输块的第二传输块。
值得注意的是，以上附图6仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图6的记载。
以上对于触发信息、指示信息和边链路资源信息等进行了示意性说明，以下对于传输块的反馈信息进行示意性说明。
在一些实施例中，UE B在发送触发信息时也发送了TB#1，连同触发信息一起发送的TB#1可以是TB#1的初传，也可以是TB#1的重传，无论哪种情况，伴随触发 信息发送的TB#1可能刚好使UE A实现了对TB#1的成功解调和译码，但UE B无法知晓TB#1已经被UE A成功接收，UE B在接收到协作信息后可能还会继续发送TB#1，这种不必要的发送会造成对资源的浪费和对其他设备的干扰。
在一些实施例中，第一终端设备接收第二终端设备发送的指示第一传输块是否被正确接收的反馈信息。
例如，UE A在接收到触发信息和TB#1后，向UE B发送针对TB#1的ACK/NACK。通过这种方式，如UE B接收到ACK，则UE B可以知晓TB#1已经被正确地接收，因此可以不再发送TB#1，从而避免资源浪费和造成干扰。虽然UE B不发送TB#1，但UE B可以发送TB#2，即发送不同于TB#1的TB。
在一些实施例中，所述反馈信息和所述边链路资源信息一起被发送。所述反馈信息由所述第二终端设备发送的第一边链路控制信息或者第二边链路控制信息或者第二传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载。
例如，UE A在发送协作信息时也发送对TB#1的ACK/NACK，即ACK/NACK连同协作信息一起发送。ACK/NACK可以通过2nd stage SCI的字段进行指示，或者ACK/NACK可以被承载在MAC PDU中。协作信息可以被承载在MAC PDU中。
将ACK/NACK连同协作信息一起发送可以作为一种不依赖于PSFCH的方案。虽然PSFCH可以用于发送边链路ACK/NACK，但某一资源池可能没有被配置PSFCH，或者，即使资源池被配置了PSFCH，设备也可能没有被使能通过PSFCH反馈ACK/NACK的功能。因此将ACK/NACK连同协作信息一起发送是一种不依赖于PSFCH的方案。
在一些实施例中，所述反馈信息通过物理边链路反馈信道(PSFCH)被发送，所述边链路资源信息通过物理边链路共享信道(PSSCH)被发送。第一终端设备在关联有物理边链路反馈信道(PSFCH)的边链路资源上发送所述触发信息和所述第一传输块。
例如，UE B在关联有PSFCH的资源上发送触发信息和TB#1，UE A通过PSFCH发送针对TB#1的ACK/NACK。UE B可以自主地选择发送触发信息和TB#1的资源，因此UE B可以选择资源位置合适的关联有PSFCH的资源，从而UE A可以在PSFCH上发送ACK/NACK给UE B。
图7是本申请实施例的边链路发送的另一示例图，示出了PSFCH在时域上位于 TB#1与协作信息之间的情形。PSFCH也可以位于协作信息之后，或者与协作信息位于相同的时隙。
在UE A在PSFCH上发送了ACK/NACK的前提下，UE A在发送协作信息的同时可以发送ACK/NACK，也可以不发送ACK/NACK。UE B在接收到ACK/NACK和协作信息后，可以决定使用协作信息发送TB#1或TB#2。
这种UE A通过PSFCH发送ACK/NACK的实施方式只能对被配置有PSFCH的资源池使用，对于没有配置PSFCH的资源池，可以使用前面所述的将ACK/NACK连同协作信息一起发送的实施方式。对于配置有PSFCH的资源池，UE A也可能没有被使能通过PSFCH反馈ACK/NACK的功能，无论UE A是否被使能通过PSFCH反馈ACK/NACK，当UE A接收到来自UE B的触发信息和TB#1后，UE A均需要通过PSFCH发送ACK/NACK。
图8是本申请实施例的边链路发送的另一示例图，以两个资源池为例进行了示意性说明。如图8的上面所示，配置了PSFCH的资源池#1仅使用PSFCH上报ACK/NACK；如图8的下面所示，没有配置PSFCH的资源池#2将ACK/NACK连同协作信息一起上报。
在一些实施例中，第二终端设备在第一传输块被正确接收的情况下，不发送边链路资源信息。
例如，UE A可以仅在PSFCH发送ACK，而不发送该协作信息。例如当PSFCH不位于协作信息之后时，由于UE B通过PSFCH接收到ACK后可能不再需要协作信息(例如UE B本来想使用协作信息发送TB#1，但在收到协作信息之前收到了针对TB#的ACK)，因此UE A可以不发送协作信息，从而可以减少对其他设备的干扰。
在一些实施例中，由第一边链路控制信息或者第二边链路控制信息或者第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载第二指示信息，所述第二指示信息指示所述第二终端设备在所述第一传输块被正确接收的情况下是否上报所述边链路资源信息。
例如，UE B可以通过1st stage SCI或2nd stage SCI中的字段指示UE A在ACK条件下是否上报协作信息。例如，如果UE B触发协作信息上报的目的是为了发送非周期业务TB#1，则UE B可以指示UE A在TB#1为ACK时不上报协作信息；如果UE B触发协作信息上报的目的是为了发送周期业务，由于UE B可以将协作信息用 于发送TB#2，UE B可以指示UE A在TB#1为ACK时仍上报协作信息。UE B可以将对是否上报协作信息的指示连同触发信息一起发送给UE A。
上述指示UE A在ACK条件下是否上报协作信息的字段可以是新定义的字段，例如1比特字段指示“是”或“否”两种状态。也可以重用现有字段，例如1st stage SCI中的周期字段取值为0，表示不需要上报协作信息；否则，表示需要上报协作信息。
当UE A工作在模式2时，不上报协作信息意味着不会触发资源选择或资源重选；当UE A工作在模式1时，不上报协作信息意味着不会触发调度请求(SR，Scheduling Request)。
在一些实施例中，所述边链路资源信息被第一终端设备用于发送不同于第一传输块的第二传输块。
例如，可以限制UE B在接收到协作信息后，只能将协作信息用于新TB发送，即协作信息不用于TB#1发送，因此UE B不会重复发送被正确接收的TB#1，从而能够避免资源浪费和造成干扰。
例如，具有周期业务的UE B可以通过自主资源选择进行多次TB#1发送，在最后一次TB#1发送时触发UE A上报协作信息，UE B在接收到协作信息后，将协作信息用于发送下一周期的TB#2。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，由第一SCI或第二SCI或第一传输块的MAC PDU指示或承载触发信息，该触发信息用于触发终端设备上报边链路资源信息。通过发送设备触发接收设备进行上报，接收设备可以向发送设备上报边链路资源信息(本文也称为协作信息)，该信息更加准确地反映了接收设备所受到的干扰情况，能够使得发送设备在选择资源时更加有效地避免干扰。
第二方面的实施例
本申请实施例提供一种边链路接收方法，从终端设备进行说明。其中该终端设备(可称为接收终端设备，第二终端设备)作为业务数据的接收方，接收其他终端设备 (可称为发送终端设备，第一终端设备)发送的边链路数据。与第一方面的实施例相同的内容不再赘述。
图9是本申请实施例的边链路接收方法的一示意图，如图9所示，该方法包括：
901，第二终端设备接收第一终端设备通过物理边链路控制信道(PSCCH)发送的第一边链路控制信息(SCI)；以及
902，第二终端设备接收第一终端设备通过物理边链路共享信道(PSSCH)发送的第二边链路控制信息(SCI)和第一传输块(TB)；其中由第一边链路控制信息或者第二边链路控制信息或者第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载用于触发所述第二终端设备上报边链路资源信息的触发信息。
在一些实施例中，边链路资源信息包括第二终端设备倾向使用的边链路资源集合和/或第二终端设备不倾向使用的边链路资源集合。
在一些实施例中，触发信息由第一边链路控制信息或第二边链路控制信息(SCI)中的某一字段指示。
在一些实施例中，第一边链路控制信息(SCI)预留被第二终端设备用于上报边链路资源信息的边链路资源。
在一些实施例中，所述方法还包括：第二终端设备接收第一终端设备发送的被第二终端设备用于确定边链路资源信息的第一指示信息。
在一些实施例中，第一指示信息包括如下至少之一或任意组合：资源选择窗信息、资源集合大小信息、资源频域大小信息。
在一些实施例中，资源选择窗信息包括如下至少之一：资源选择窗的起始时间位置、资源选择窗的结束时间位置、包延迟预算(PDB)。
在一些实施例中，资源集合大小信息包括如下至少之一：边链路资源集合中所包含的资源个数、边链路资源集合中所包含的资源个数占资源池总资源个数的比例。
在一些实施例中，资源频域大小信息包括边链路资源在频域上所占的子信道个数；所述子信道个数被包含在所述指示信息中，或者由与所述触发信息一起发送的传输块的资源的频域大小(子信道个数)确定。
在一些实施例中，第一指示信息由第一边链路控制信息(SCI)指示或承载，或者由第二边链路控制信息(SCI)指示或承载，或者由第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载。
在一些实施例中，第一传输块仅承载用于指示第一指示信息的信息。
在一些实施例中，所述方法还包括：第二终端设备向第一终端设备上报边链路资源信息；以及接收第一终端设备根据边链路资源信息再次发送的第一传输块，或者根据边链路资源信息发送的不同于第一传输块的第二传输块。
在一些实施例中，所述方法还包括：第二终端设备向第一终端设备发送用于指示第一传输块是否被正确接收的反馈信息。
在一些实施例中，反馈信息和边链路资源信息一起被发送。
在一些实施例中，反馈信息由第二终端设备发送的第一边链路控制信息或者第二边链路控制信息或者第二传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载。
在一些实施例中，反馈信息通过物理边链路反馈信道(PSFCH)被发送，边链路资源信息通过物理边链路共享信道(PSSCH)被发送。
在一些实施例中，第一终端设备在关联有物理边链路反馈信道(PSFCH)的边链路资源上发送触发信息和第一传输块。
在一些实施例中，第二终端设备在第一传输块被正确接收的情况下，不发送边链路资源信息。
在一些实施例中，由第一边链路控制信息或者第二边链路控制信息或者第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载第二指示信息，所述第二指示信息指示第二终端设备在第一传输块被正确接收的情况下是否上报边链路资源信息。
在一些实施例中，边链路资源信息被第一终端设备用于发送不同于第一传输块的第二传输块。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，由第一SCI或第二SCI或第一传输块的MAC PDU指示或承载触发信息，该触发信息用于触发终端设备上报边链路资源信息。通过发送设备触发接收设备进行上报，接收设备可以向发送设备上报边链路资源信息(本文也称为协作信息)，该信息更加准确地反映了接收设备所受到的干扰情况，能够使得发送设备在 选择资源时更加有效地避免干扰。
第三方面的实施例
本申请实施例提供一种边链路发送装置。该装置例如可以是终端设备，也可以是配置于终端设备的某个或某些部件或者组件，与第一方面的实施例相同的内容不再赘述。
图10是本申请实施例的边链路发送装置的一示意图，如图10所示，边链路发送装置1000包括：
第一发送单元1001，其通过物理边链路控制信道发送第一边链路控制信息；以及
第二发送单元1002，其通过物理边链路共享信道发送第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载用于触发第二终端设备上报边链路资源信息的触发信息。
在一些实施例中，所述边链路资源信息包括所述第二终端设备倾向使用的边链路资源集合和/或所述第二终端设备不倾向使用的边链路资源集合。
在一些实施例中，所述触发信息由所述第一边链路控制信息或所述第二边链路控制信息中的某一字段指示。
在一些实施例中，所述第一边链路控制信息预留被所述第二终端设备用于上报所述边链路资源信息的边链路资源。
在一些实施例中，第二发送单元1002还用于：向所述第二终端设备发送被所述第二终端设备用于确定所述边链路资源信息的第一指示信息。
在一些实施例中，所述第一指示信息包括如下至少之一或任意组合：资源选择窗信息、资源集合大小信息、资源频域大小信息。
在一些实施例中，所述资源选择窗信息包括如下至少之一：资源选择窗的起始时间位置、资源选择窗的结束时间位置、包延迟预算；
所述资源集合大小信息包括如下至少之一：边链路资源集合中所包含的资源个数、所述边链路资源集合中所包含的资源个数占资源池总资源个数的比例；
所述资源频域大小信息包括边链路资源在频域上所占的子信道个数；所述子信道 个数被包含在所述指示信息中，或者由与所述触发信息一起发送的传输块的资源的频域大小(子信道个数)确定。
在一些实施例中，所述第一指示信息由所述第一边链路控制信息指示或承载，或者由所述第二边链路控制信息指示或承载，或者由所述第一传输块的介质访问控制协议数据单元指示或承载。
在一些实施例中，所述第一传输块仅承载用于指示所述第一指示信息的信息。
在一些实施例中，如图10所示，边链路发送装置100还可以包括：
接收单元1003，其接收所述第二终端设备上报的所述边链路资源信息；
第二发送单元1002还根据所述边链路资源信息再次发送所述第一传输块，或者发送不同于所述第一传输块的第二传输块。
在一些实施例中，接收单元1003还用于接收所述第二终端设备发送的指示所述第一传输块是否被正确接收的反馈信息。
在一些实施例中，所述反馈信息和所述边链路资源信息一起被发送。
在一些实施例中，所述反馈信息由所述第二终端设备发送的第一边链路控制信息或者第二边链路控制信息或者第二传输块的介质访问控制协议数据单元指示或承载。
在一些实施例中，所述反馈信息通过物理边链路反馈信道被发送，所述边链路资源信息通过物理边链路共享信道被发送。
在一些实施例中，第二发送单元1002在关联有物理边链路反馈信道的边链路资源上发送所述触发信息和所述第一传输块。
在一些实施例中，所述第二终端设备在所述第一传输块被正确接收的情况下，不发送所述边链路资源信息。
在一些实施例中，由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载第二指示信息，所述第二指示信息指示所述第二终端设备在所述第一传输块被正确接收的情况下是否上报所述边链路资源信息。
在一些实施例中，所述边链路资源信息被第一终端设备用于发送不同于所述第一传输块的第二传输块。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例， 也可以将以上各个实施例中的一种或多种结合起来。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限于此。边链路发送装置1000还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图10中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现；本申请实施并不对此进行限制。
由上述实施例可知，由第一SCI或第二SCI或第一传输块的MAC PDU指示或承载触发信息，该触发信息用于触发终端设备上报边链路资源信息。通过发送设备触发接收设备进行上报，接收设备可以向发送设备上报边链路资源信息(本文也称为协作信息)，该信息更加准确地反映了接收设备所受到的干扰情况，能够使得发送设备在选择资源时更加有效地避免干扰。
第四方面的实施例
本申请实施例提供一种边链路接收装置。该装置例如可以是终端设备，也可以是配置于终端设备的某个或某些部件或者组件，与第二方面的实施例相同的内容不再赘述。
图11是本申请实施例的边链路接收装置的一示意图，如图11所示，边链路接收装置1100包括：
第一接收单元1101，其接收通过物理边链路控制信道发送的第一边链路控制信息；以及
第二接收单元1102，其接收通过物理边链路共享信道发送的第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载用于触发第二终端设备上报边链路资源信息的触发信息。
在一些实施例中，如图11所示，边链路接收装置1100还可以包括：
发送单元1103，其上报所述边链路资源信息。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可 以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限于此。边链路接收装置1100还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图11中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现；本申请实施并不对此进行限制。
由上述实施例可知，由第一SCI或第二SCI或第一传输块的MAC PDU指示或承载触发信息，该触发信息用于触发终端设备上报边链路资源信息。通过发送设备触发接收设备进行上报，接收设备可以向发送设备上报边链路资源信息(本文也称为协作信息)，该信息更加准确地反映了接收设备所受到的干扰情况，能够使得发送设备在选择资源时更加有效地避免干扰。
第五方面的实施例
本申请实施例还提供一种通信系统，可以参考图1，与第一方面至第四方面的实施例相同的内容不再赘述。该通信系统包括：
第一终端设备，其通过物理边链路控制信道发送第一边链路控制信息；以及通过物理边链路共享信道发送第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载触发信息；以及
第二终端设备，其接收所述第一边链路控制信息、所述第二边链路控制信息和所述第一传输块；其中所述触发信息用于触发所述第二终端设备上报边链路资源信息。
本申请实施例还提供一种网络设备，例如可以是基站，但本申请不限于此，还可以是其他的网络设备。
图12是本申请实施例的网络设备的构成示意图。如图12所示，网络设备1200可以包括：处理器1210(例如中央处理器CPU)和存储器1220；存储器1220耦合到处理器1210。其中该存储器1220可存储各种数据；此外还存储信息处理的程序1230， 并且在处理器1210的控制下执行该程序1230。
此外，如图12所示，网络设备1200还可以包括：收发机1240和天线1250等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备1200也并不是必须要包括图12中所示的所有部件；此外，网络设备1200还可以包括图12中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种终端设备，但本申请不限于此，还可以是其他的设备。
图13是本申请实施例的终端设备的示意图。如图13所示，该终端设备1300可以包括处理器1310和存储器1320；存储器1320存储有数据和程序，并耦合到处理器1310。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
例如，处理器1310可以被配置为执行程序而实现如第一方面的实施例所述的边链路发送方法。例如处理器1310可以被配置为进行如下的控制：通过物理边链路控制信道(PSCCH)发送第一边链路控制信息(SCI)；以及通过物理边链路共享信道(PSSCH)发送第二边链路控制信息(SCI)和第一传输块(TB)；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载用于触发上报边链路资源信息的触发信息。
例如，处理器1310可以被配置为执行程序而实现如第二方面的实施例所述的边链路接收方法。例如处理器1310可以被配置为进行如下的控制：接收通过物理边链路控制信道发送的第一边链路控制信息；以及接收通过物理边链路共享信道发送的第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载用于触发上报边链路资源信息的触发信息。
如图13所示，该终端设备1300还可以包括：通信模块1330、输入单元1340、显示器1350、电源1360。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，终端设备1300也并不是必须要包括图13中所示的所有部件，上述部件并不是必需的；此外，终端设备1300还可以包括图13中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种计算机程序，其中当在终端设备中执行所述程序时，所 述程序使得所述终端设备执行第一方面的实施例所述的边链路发送方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第一方面的实施例所述的边链路发送方法。
本申请实施例还提供一种计算机程序，其中当在终端设备中执行所述程序时，所述程序使得所述终端设备执行第二方面的实施例所述的边链路接收方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第二方面的实施例所述的边链路接收方法。
本申请以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本申请涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本申请还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本申请实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图中所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合， 例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本申请进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本申请保护范围的限制。本领域技术人员可以根据本申请的精神和原理对本申请做出各种变型和修改，这些变型和修改也在本申请的范围内。
关于包括以上实施例的实施方式，还公开下述的附记：
附记1、一种边链路发送方法，包括：
第一终端设备通过物理边链路控制信道(PSCCH)向第二终端设备发送第一边链路控制信息(SCI)；以及
通过物理边链路共享信道(PSSCH)向所述第二终端设备发送第二边链路控制信息(SCI)和第一传输块(TB)；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载用于触发所述第二终端设备上报边链路资源信息的触发信息。
附记2、根据附记1所述的方法，其中，所述边链路资源信息包括所述第二终端设备倾向使用的边链路资源集合和/或所述第二终端设备不倾向使用的边链路资源集合。
附记3、根据附记1或2所述的方法，其中，所述触发信息由所述第一边链路控制信息或所述第二边链路控制信息(SCI)中的某一字段指示。
附记4、根据附记1至3任一项所述的方法，其中，所述方法还包括：
所述第一终端设备使用所述第一边链路控制信息(SCI)预留被所述第二终端设备用于上报所述边链路资源信息的边链路资源。
附记5、根据附记1至4任一项所述的方法，其中，所述方法还包括：
所述第一终端设备向所述第二终端设备发送被所述第二终端设备用于确定所述边链路资源信息的第一指示信息。
附记6、根据附记5所述的方法，其中，所述第一指示信息包括如下至少之一或任意组合：资源选择窗信息、资源集合大小信息、资源频域大小信息。
附记7、根据附记6所述的方法，其中，所述资源选择窗信息包括如下至少之一：资源选择窗的起始时间位置、资源选择窗的结束时间位置、包延迟预算(PDB)。
附记8、根据附记6所述的方法，其中，所述资源集合大小信息包括如下至少之一：边链路资源集合中所包含的资源个数、所述边链路资源集合中所包含的资源个数占资源池总资源个数的比例。
附记9、根据附记6所述的方法，其中，所述资源频域大小信息包括边链路资源在频域上所占的子信道个数；所述子信道个数被包含在所述指示信息中，或者由与所述触发信息一起发送的传输块的资源的子信道个数确定。
附记10、根据附记5至9任一项所述的方法，其中，所述第一指示信息由所述第一边链路控制信息(SCI)指示或承载，或者由所述第二边链路控制信息(SCI)指示或承载，或者由所述第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载。
附记11、根据附记5至10任一项所述的方法，其中，所述第一传输块仅承载用于指示所述第一指示信息的信息。
附记12、根据附记1至11任一项所述的方法，其中，所述方法还包括：
所述第一终端设备接收所述第二终端设备上报的所述边链路资源信息；以及
所述第一终端设备根据所述边链路资源信息再次发送所述第一传输块，或者发送不同于所述第一传输块的第二传输块。
附记13、根据附记12所述的方法，其中，所述方法还包括：
所述第一终端设备接收所述第二终端设备发送的指示所述第一传输块是否被正确接收的反馈信息。
附记14、根据附记13所述的方法，其中，所述反馈信息和所述边链路资源信息一起被发送。
附记15、根据附记14所述的方法，其中，所述反馈信息由所述第二终端设备发送的第一边链路控制信息或者第二边链路控制信息或者第二传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载。
附记16、根据附记13所述的方法，其中，所述反馈信息通过物理边链路反馈信道(PSFCH)被发送，所述边链路资源信息通过物理边链路共享信道(PSSCH)被发送。
附记17、根据附记16所述的方法，其中，所述第一终端设备在关联有物理边链路反馈信道(PSFCH)的边链路资源上发送所述触发信息和所述第一传输块。
附记18、根据附记1至11任一项所述的方法，其中，所述第二终端设备在所述第一传输块被正确接收的情况下，不发送所述边链路资源信息。
附记19、根据附记1至18任一项所述的方法，其中，由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载第二指示信息，所述第二指示信息指示所述第二终端设备在所述第一传输块被正确接收的情况下是否上报所述边链路资源信息。
附记20、根据附记1至19任一项所述的方法，其中，所述边链路资源信息被所述第一终端设备用于发送不同于所述第一传输块的第二传输块。
附记21、一种边链路接收方法，包括：
第二终端设备接收第一终端设备通过物理边链路控制信道(PSCCH)发送的第一边链路控制信息(SCI)；以及
接收所述第一终端设备通过物理边链路共享信道(PSSCH)发送的第二边链路控制信息(SCI)和第一传输块(TB)；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载用于触发所述第二终端设备上报边链路资源信息的触发信息。
附记22、根据附记21所述的方法，其中，所述边链路资源信息包括所述第二终端设备倾向使用的边链路资源集合和/或所述第二终端设备不倾向使用的边链路资源集合。
附记23、根据附记21或22所述的方法，其中，所述触发信息由所述第一边链路控制信息或所述第二边链路控制信息(SCI)中的某一字段指示。
附记24、根据附记21至23任一项所述的方法，其中，所述第一边链路控制信息(SCI)预留被所述第二终端设备用于上报所述边链路资源信息的边链路资源。
附记25、根据附记21至24任一项所述的方法，其中，所述方法还包括：
所述第二终端设备接收所述第一终端设备发送的被所述第二终端设备用于确定所述边链路资源信息的第一指示信息。
附记26、根据附记25所述的方法，其中，所述第一指示信息包括如下至少之一或任意组合：资源选择窗信息、资源集合大小信息、资源频域大小信息。
附记27、根据附记26所述的方法，其中，所述资源选择窗信息包括如下至少之一：资源选择窗的起始时间位置、资源选择窗的结束时间位置、包延迟预算(PDB)。
附记28、根据附记26所述的方法，其中，所述资源集合大小信息包括如下至少之一：边链路资源集合中所包含的资源个数、所述边链路资源集合中所包含的资源个数占资源池总资源个数的比例。
附记29、根据附记26所述的方法，其中，所述资源频域大小信息包括边链路资源在频域上所占的子信道个数；所述子信道个数被包含在所述指示信息中，或者由与所述触发信息一起发送的传输块的资源的子信道个数确定。
附记30、根据附记25至29任一项所述的方法，其中，所述第一指示信息由所述第一边链路控制信息(SCI)指示或承载，或者由所述第二边链路控制信息(SCI)指示或承载，或者由所述第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载。
附记31、根据附记25至30任一项所述的方法，其中，所述第一传输块仅承载用于指示所述第一指示信息的信息。
附记32、根据附记21至31任一项所述的方法，其中，所述方法还包括：
所述第二终端设备触发调度请求(SR)，向网络设备请求用于上报所述边链路资源信息的边链路资源。
附记33、根据附记21至31任一项所述的方法，其中，所述方法还包括：
所述第二终端设备触发资源选择或重选，自主选择和确定用于上报所述边链路资源信息的边链路资源。
附记34、根据附记21至33任一项所述的方法，其中，所述方法还包括：
所述第二终端设备向所述第一终端设备上报所述边链路资源信息；以及
接收所述第一终端设备根据所述边链路资源信息再次发送的所述第一传输块，或者根据所述边链路资源信息发送的不同于所述第一传输块的第二传输块。
附记35、根据附记34所述的方法，其中，所述方法还包括：
所述第二终端设备向所述第一终端设备发送用于指示所述第一传输块是否被正确接收的反馈信息。
附记36、根据附记35所述的方法，其中，所述反馈信息和所述边链路资源信息一起被发送。
附记37、根据附记36所述的方法，其中，所述反馈信息由所述第二终端设备发送的第一边链路控制信息或者第二边链路控制信息或者第二传输块的介质访问控制 (MAC)协议数据单元(PDU)指示或承载。
附记38、根据附记35所述的方法，其中，所述反馈信息通过物理边链路反馈信道(PSFCH)被发送，所述边链路资源信息通过物理边链路共享信道(PSSCH)被发送。
附记39、根据附记38所述的方法，其中，所述第一终端设备在关联有物理边链路反馈信道(PSFCH)的边链路资源上发送所述触发信息和所述第一传输块。
附记40、根据附记21至31任一项所述的方法，其中，所述第二终端设备在所述第一传输块被正确接收的情况下，不发送所述边链路资源信息。
附记41、根据附记21至40任一项所述的方法，其中，由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制(MAC)协议数据单元(PDU)指示或承载第二指示信息，所述第二指示信息指示所述第二终端设备在所述第一传输块被正确接收的情况下是否上报所述边链路资源信息。
附记42、根据附记21至41任一项所述的方法，其中，所述边链路资源信息被所述第一终端设备用于发送不同于所述第一传输块的第二传输块。
附记43、一种终端设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器被配置为执行所述计算机程序而实现如附记1至20任一项所述的边链路发送方法。
附记44、一种终端设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器被配置为执行所述计算机程序而实现如附记21至42任一项所述的边链路接收方法。
附记45、一种通信系统，包括如附记43所述的终端设备和如附记44所述的终端设备。

Claims (20)

  1. 一种边链路发送装置，包括：
    第一发送单元，其通过物理边链路控制信道发送第一边链路控制信息；以及
    第二发送单元，其通过物理边链路共享信道发送第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载用于触发第二终端设备上报边链路资源信息的触发信息。
  2. 根据权利要求1所述的装置，其中，所述边链路资源信息包括所述第二终端设备倾向使用的边链路资源集合和/或所述第二终端设备不倾向使用的边链路资源集合。
  3. 根据权利要求1所述的装置，其中，所述触发信息由所述第一边链路控制信息或所述第二边链路控制信息中的某一字段指示。
  4. 根据权利要求1所述的装置，其中，所述第一边链路控制信息预留被所述第二终端设备用于上报所述边链路资源信息的边链路资源。
  5. 根据权利要求1所述的装置，其中，所述第二发送单元还用于：发送被所述第二终端设备用于确定所述边链路资源信息的第一指示信息。
  6. 根据权利要求5所述的装置，其中，所述第一指示信息包括如下至少之一或任意组合：资源选择窗信息、资源集合大小信息、资源频域大小信息。
  7. 根据权利要求6所述的装置，其中，所述资源选择窗信息包括如下至少之一：资源选择窗的起始时间位置、资源选择窗的结束时间位置、包延迟预算；
    所述资源集合大小信息包括如下至少之一：边链路资源集合中所包含的资源个数、所述边链路资源集合中所包含的资源个数占资源池总资源个数的比例；
    所述资源频域大小信息包括边链路资源在频域上所占的子信道个数；所述子信道个数被包含在所述指示信息中，或者由与所述触发信息一起发送的传输块的资源的子信道个数确定。
  8. 根据权利要求5所述的装置，其中，所述第一指示信息由所述第一边链路控制信息指示或承载，或者由所述第二边链路控制信息指示或承载，或者由所述第一传输块的介质访问控制协议数据单元指示或承载。
  9. 根据权利要求5所述的装置，其中，所述第一传输块仅承载用于指示所述第一指示信息的信息。
  10. 根据权利要求1所述的装置，其中，所述装置还包括：
    接收单元，其接收所述第二终端设备上报的所述边链路资源信息；
    所述第二发送单元还根据所述边链路资源信息再次发送所述第一传输块，或者发送不同于所述第一传输块的第二传输块。
  11. 根据权利要求10所述的装置，其中，所述接收单元还用于接收所述第二终端设备发送的指示所述第一传输块是否被正确接收的反馈信息。
  12. 根据权利要求11所述的装置，其中，所述反馈信息和所述边链路资源信息一起被发送。
  13. 根据权利要求12所述的装置，其中，所述反馈信息由所述第二终端设备发送的第一边链路控制信息或者第二边链路控制信息或者第二传输块的介质访问控制协议数据单元指示或承载。
  14. 根据权利要求11所述的装置，其中，所述反馈信息通过物理边链路反馈信道被发送，所述边链路资源信息通过物理边链路共享信道被发送。
  15. 根据权利要求14所述的装置，其中，所述第二发送单元在关联有物理边链路反馈信道的边链路资源上发送所述触发信息和所述第一传输块。
  16. 根据权利要求1所述的装置，其中，所述第二终端设备在所述第一传输块被正确接收的情况下，不发送所述边链路资源信息。
  17. 根据权利要求1所述的装置，其中，由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载第二指示信息，所述第二指示信息指示所述第二终端设备在所述第一传输块被正确接收的情况下是否上报所述边链路资源信息。
  18. 根据权利要求1所述的装置，其中，所述边链路资源信息被用于发送不同于所述第一传输块的第二传输块。
  19. 一种边链路接收装置，包括：
    第一接收单元，其接收通过物理边链路控制信道发送的第一边链路控制信息；及
    第二接收单元，其接收通过物理边链路共享信道发送的第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第 一传输块的介质访问控制协议数据单元指示或承载用于触发第二终端设备上报边链路资源信息的触发信息。
  20. 一种通信系统，包括：
    第一终端设备，其通过物理边链路控制信道发送第一边链路控制信息；以及通过物理边链路共享信道发送第二边链路控制信息和第一传输块；其中由所述第一边链路控制信息或者所述第二边链路控制信息或者所述第一传输块的介质访问控制协议数据单元指示或承载触发信息；以及
    第二终端设备，其接收所述第一边链路控制信息、所述第二边链路控制信息和所述第一传输块；其中所述触发信息用于触发所述第二终端设备上报边链路资源信息。
PCT/CN2020/083889 2020-04-09 2020-04-09 边链路发送和接收方法以及装置 WO2021203347A1 (zh)

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