WO2023109485A1 - 边链路通信方法、通信节点及存储介质 - Google Patents

边链路通信方法、通信节点及存储介质 Download PDF

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WO2023109485A1
WO2023109485A1 PCT/CN2022/134578 CN2022134578W WO2023109485A1 WO 2023109485 A1 WO2023109485 A1 WO 2023109485A1 CN 2022134578 W CN2022134578 W CN 2022134578W WO 2023109485 A1 WO2023109485 A1 WO 2023109485A1
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feedback
information
transmission
feedback information
type
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PCT/CN2022/134578
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English (en)
French (fr)
Inventor
邢卫民
陈杰
卢有雄
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中兴通讯股份有限公司
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Publication of WO2023109485A1 publication Critical patent/WO2023109485A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup

Definitions

  • the present application relates to the technical field of wireless communication networks, for example, to a side link communication method, a communication node and a storage medium.
  • the direct connection communication may also be referred to as side link (Sidelink, SL) communication, and the SL communication operates on a licensed frequency band or a dedicated frequency band.
  • Sidelink Sidelink
  • SL communication operates on a licensed frequency band or a dedicated frequency band.
  • Unlicensed Band unlicensed band
  • a channel access process is required, which is generally called the Listen Before Talk (LBT) process, if within the detection time corresponding to the LBT process If the detection channel resource is determined to be idle (LBT is successful), the sender can continue to send SL, otherwise, the sender needs to give up transmitting SL.
  • LBT Listen Before Talk
  • the sending end can send an SL transmission, and it can have a feedback signal or feedback information corresponding to it, and the receiving end can send the above feedback information, so that the sending end obtains the result of the SL transmission it sends by receiving the feedback information. If the receiving end LBT fails, or cannot send feedback information normally due to power limitation or priority reasons, etc., it will cause the sending end to make wrong operations without obtaining feedback information, such as judging whether to retransmit SL transmission Errors affect network efficiency and reliability.
  • the present application provides a side link communication method, a communication node and a storage medium.
  • An embodiment of the present application provides a side link communication method, including:
  • Sending side link SL transmission where the SL transmission corresponds to a set of candidate feedback opportunities; receiving first feedback information at the set of candidate feedback opportunities; reporting second feedback information to a high layer according to the first feedback information.
  • the embodiment of the present application also provides a side link communication method, including:
  • the embodiment of the present application also provides a side link communication method, including:
  • Receive second feedback information ; perform a side link SL transmission operation according to the second feedback information.
  • the embodiment of the present application also provides a side link communication method, including:
  • each SL transmission in the group of SL transmissions corresponds to a set of alternative feedback opportunities; receive the first feedback information at the set of alternative feedback opportunities corresponding to the set of SL transmissions; according to The first feedback information determines third feedback information reported to the network device.
  • the embodiment of the present application also provides a communication node, including: a memory, a processor, and a computer program stored in the memory and operable on the processor.
  • a communication node including: a memory, a processor, and a computer program stored in the memory and operable on the processor.
  • the processor executes the program, the above-mentioned side link communication is realized. method.
  • the embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the program is executed by a processor, the above side link communication method is realized.
  • Fig. 1 is a schematic diagram of a kind of LBT process provided by an embodiment
  • FIG. 2 is a flow chart of a side link communication method provided by an embodiment
  • FIG. 3 is a flowchart of another side link communication method provided by an embodiment
  • FIG. 4 is a flowchart of another side link communication method provided by an embodiment
  • FIG. 5 is a flowchart of another side link communication method provided by an embodiment
  • FIG. 6 is a schematic structural diagram of a side link communication device provided by an embodiment
  • Fig. 7 is a schematic structural diagram of a side link communication device provided by an embodiment
  • FIG. 8 is a schematic structural diagram of a side link communication device provided by an embodiment
  • FIG. 9 is a schematic structural diagram of a side link communication device provided by an embodiment.
  • Fig. 10 is a schematic diagram of a hardware structure of a communication node provided by an embodiment.
  • a general LBT process (also called a channel access process) occurs before a communication node (for example, a communication node can be a base station or a terminal) transmits, and the transmission resource can be a Grant resource, where the length of the LBT process is in terms of time
  • the span of can be referred to as the LBT duration (the LBT duration may include one or more sensing slots (Sensing slots)).
  • Fig. 1 is a schematic diagram of an LBT process provided by an embodiment. As shown in FIG. 1 , when the channel is determined to be idle (Idle) within the LBT duration, the communication node can send.
  • the LBT types can include two categories, as shown in the 3GPP protocol TS387.213:
  • LBT type 1 (that is, the first type of channel access process): the LBT duration can be a random value, and LBT type 1 can be divided into multiple channel access priority classes (Channel Access Priority Class, CAPC); LBT type 2 (that is, the first Two types of channel access process): the LBT duration can be a certain value, and can be divided into multiple subtypes such as LBT type 2A, LBT type 2B, and LBT type 2C according to different values.
  • CAPC Channel Access Priority Class
  • LBT type 2 that is, the first Two types of channel access process: the LBT duration can be a certain value, and can be divided into multiple subtypes such as LBT type 2A, LBT type 2B, and LBT type 2C according to different values.
  • each CAPC in LBT type 1 and each subtype in LBT type 2 can also be called a channel access type.
  • SL communication when there is business to be transmitted between communication nodes, the business data between communication nodes is not forwarded by other network devices, but is directly transmitted from the data source communication node to the target communication node, that is, the direct communication between communication nodes communication.
  • SL communication can include multiple transmission types (Cast Type):
  • Unicast For unicast, only a specific communication node is the receiving end, and the receiving end feeds back the received data.
  • the feedback here can be acknowledgment (ACKnowledge, ACK) information feedback or non-acknowledgment (NonACKnowledge, NACK) Information feedback, that is, the receiving end feeds back ACK information when the reception is correct, and feeds back NACK information when the reception is wrong.
  • Multicast For multicast, only a specific group of communication nodes is the receiver, and the receiver feedbacks the received data; Multicast type 1: The feedback here is only NACK information feedback, that is, when the receiver receives it correctly, No feedback, feedback NACK information when receiving an error; multicast type 2: The feedback here can be ACK information feedback or NACK information feedback, that is, the receiving end will feedback ACK information when receiving correctly, and feedback NACK information when receiving an error.
  • Broadcast For broadcasting, all surrounding user equipment (UE) can be the receiving end, and the receiving end will not feedback the received data, that is, there is no ACK information feedback or NACK information feedback. In addition, for multicast and unicast, feedback can also be disabled, that is, the receiving end of multicast and unicast does not perform feedback.
  • UE user equipment
  • the sending end sends an SL transmission, if feedback is enabled, it corresponds to a feedback opportunity in the time domain, and a time domain feedback opportunity may include one or more feedback resources according to the transmission type such as multicast or unicast , the sending end detects the feedback information (ie, ACK feedback information or NACK feedback information) sent by one or more receiving ends at this time-domain feedback opportunity, so as to judge whether the SL transmission is ACK or NACK.
  • the feedback information ie, ACK feedback information or NACK feedback information
  • the sending end sends a data packet or transmission block, and may perform SL transmission on the transmission block more than once, so as to ensure that the expected receiving end can receive the data packet or transmission block correctly, and these SL A transport is referred to as a set of SL transports.
  • SL A transport is referred to as a set of SL transports. For one SL transmission in the group of SL transmissions, it can be judged whether the current SL transmission is correct according to the received feedback information, so as to determine whether to continue the next SL transmission.
  • an SL transmission can correspond to multiple alternative feedback opportunities in the time domain
  • a sender sends an SL transmission on time slot n, then correspondingly, it can be in time slot n+T1, n+T2, ...., receive feedback information on n+TN; for the receiving end, the LBT process can be attempted to perform feedback on multiple alternative feedback time slots n+T1, n+T2,...., n+TN
  • the transmission of information thus greatly improving the probability of sending feedback information.
  • the sender needs to adjust the feedback information receiving strategy to prevent the sender from making wrong operations when the feedback information is not obtained at one feedback opportunity and affecting the network efficiency.
  • FIG. 2 is a flow chart of a side link communication method provided by an embodiment. As shown in FIG. 2 , the method provided by this embodiment includes 110 , 120 and 130 , and the method can be applied at the sending end.
  • an SL transmission is sent, the SL transmission corresponding to a set of candidate feedback opportunities.
  • first feedback information is received at the set of candidate feedback opportunities.
  • the set of candidate feedback opportunities may refer to a set composed of multiple candidate feedback opportunities in the time domain.
  • the sender sends SL transmissions, where one SL transmission can correspond to a set of alternative feedback opportunities; the sender can receive the first feedback information sent by the corresponding receiver at the set of alternative feedback opportunities; on this basis, the sender can according to The first feedback information reports the second feedback information to its own high level.
  • the sending end receives the first feedback information returned by the corresponding receiving end at a set of alternative feedback opportunities, and on this basis, the sending end reports the second feedback information to the upper layer according to the received first feedback information, It can effectively prevent the sending end from making wrong operations without obtaining the first feedback information, thereby improving the efficiency and reliability of network communication.
  • the SL transmission is unicast transmission with feedback enabled, and the first feedback information includes NACK information or ACK information.
  • the second feedback information is set to be the same as the received first feedback information.
  • the second feedback information is set as NACK information, or the second feedback information is set as the first feedback information is not received.
  • the SL transmission is the first multicast type transmission with feedback enabled, and the first feedback information includes NACK information.
  • the second feedback information is set as NACK information.
  • the second feedback information is set as ACK information, or the second feedback information is set as the first feedback information is not received.
  • the transport block carried by the SL transmission is the first transmission, or the transport block carried by the SL transmission is the nth transmission, and n is less than or equal to N, then the second feedback information is set as NACK information, where N is positive integer.
  • N can be predefined for the system, or a value configured or preconfigured by the network.
  • the SL transmission is a feedback-enabled second multicast type transmission
  • the first feedback information of each member includes NACK information or ACK information.
  • the first feedback information of a member UE when the first feedback information of a member UE is received as ACK information at at least one alternative feedback opportunity, it is determined that the first feedback information of the member UE is ACK information; otherwise, it is determined that the first feedback information of the member UE is ACK information.
  • the feedback information is NACK information.
  • At least one feedback opportunity belongs to the set of candidate feedback opportunities corresponding to the SL transmission; or, at least one feedback opportunity belongs to the set of candidate feedback opportunities corresponding to the group of SL transmissions where the SL transmission is located.
  • the second feedback information when the first feedback information of each member in the member group is received as ACK information, the second feedback information is set as ACK information; otherwise, the second feedback information is set as NACK information.
  • the SL transmission is the third multicast type transmission with feedback enabled, and the first feedback information of each member includes NACK information or ACK information.
  • the second feedback information is set as NACK information.
  • the second feedback information is set as ACK information; otherwise, the second feedback information is set as NACK information.
  • the second feedback information is set as NACK information, or the second feedback information is set as the first feedback information is not received.
  • the SL transmission belongs to a group of SL transmissions; the data blocks of a group of SL transmissions are the same, or, a group of SL transmissions belongs to one SL process, or, a group of SL transmissions includes at least one SL transmission indicated by the network or a high layer Or a transmission corresponding to at least one authorized resource.
  • the side link communication method is exemplarily described below through different embodiments.
  • SL transmission and its corresponding feedback information belong to the same resource pool, and the network or base station configures or pre-configures one or more resource pools for sending or receiving SL signals.
  • configuration or pre-configuration will be referred to as configuration in the following application.
  • a sending resource pool for SL communication is configured, where the sending resource pool may include one or more SL feedback channel resource configurations, which may include one of the following:
  • One or more SL feedback channel resources are configured to receive feedback information corresponding to SL communication; one or more SL feedback channel resources are configured to receive or send feedback information corresponding to SL communication.
  • For one SL feedback channel resource configuration It can indicate whether it is used to send or receive feedback information corresponding to SL communication.
  • a receiving resource pool for SL communication is configured, where the receiving resource pool may include one or more SL feedback channel resource configurations, which may include one of the following:
  • One or more SL feedback channel resources are configured to send feedback information corresponding to SL communication; one or more SL feedback channel resources are configured to receive or send feedback information corresponding to SL communication.
  • For one SL feedback channel resource configuration It can indicate whether it is used to send or receive feedback information corresponding to SL communication.
  • An SL feedback channel resource configuration can also include at least one of the following: the minimum interval K between SL communication and the corresponding SL feedback channel resource, the period N of the SL feedback channel resource, the frequency domain resource position and number of the SL feedback channel resource, and the SL feedback channel resource.
  • the format of the feedback information on the feedback channel resource, and the code domain resource corresponding to the feedback information on the SL feedback channel resource (for example, the cyclic shift information of the sequence, etc.).
  • the unit of the K value may be a time slot (Slot) or a symbol (Symbol).
  • the time slot may be a logical time slot in the resource pool, or a physical time slot.
  • K when K is greater than 0, it may indicate that the SL feedback channel resource is located before its corresponding SL communication, and when K is less than 0, it may indicate that the SL feedback channel resource is located after its corresponding SL communication. Or, in an embodiment, when K is greater than 0, it may indicate that the SL feedback channel resource is located after its corresponding SL communication, and when K is less than 0, it may indicate that the SL feedback channel resource is located before its corresponding SL communication.
  • Different SL feedback channel resource configurations may correspond to different K values. In an embodiment, the value of K may be set to 0, which may indicate that feedback information is not enabled, or that the SL feedback channel resource and its corresponding SL communication are in the same time slot.
  • the feedback information is first feedback information. It can be Hybrid Automatic Repeat reQuest (HARQ) acknowledgment information, channel status report information, resource conflict indication information, or reference signals (such as channel state information reference signal CSI-RS, positioning reference signal PRS, etc.).
  • HARQ Hybrid Automatic Repeat reQuest
  • the sending end receives the first feedback information and reports the second feedback information to the high layer:
  • the sending end needs to send an SL transmission on an unlicensed carrier.
  • the destination receiving end that receives the SL transmission needs to send first feedback information to the sending end.
  • multiple alternative feedback opportunities in the time domain can be set, and the target receiver can perform the LBT process at each alternative feedback opportunity, which can greatly improve the receiving end.
  • the probability of the first feedback information; at the same time, the sending end also needs to receive the first feedback information at the alternative feedback opportunities in multiple time domains corresponding to one SL transmission, and report the second feedback information to the upper layer of the sending end according to the first feedback information Feedback information, allowing the upper layer to perform corresponding retransmission and other operations.
  • the SL transmission is unicast transmission with feedback enabled, wherein the first feedback information may include NACK information or ACK information; since there is only one destination receiving end, the sending end only uses the first
  • the second feedback information to be reported to the upper layer can be determined, that is, any one or at least one of the multiple alternative feedback opportunities at the sending end (a plurality of alternative feedback opportunities is a set of alternative feedback opportunities)
  • the second feedback information After receiving the first feedback information, set the second feedback information to the same value as the received first feedback information; similarly, if the sending end has received the first feedback information in multiple alternative feedback opportunities, send The end may expect the received first feedback information to have the same value.
  • the first feedback information may have the same value.
  • the SL transmission being unicast transmission for enabling feedback may include indicating that the transmission type in sidechain control information (Sidelink Control Information, SCI) corresponding to the SL transmission is unicast.
  • SCI Sidelink Control Information
  • the sending end may not receive the first feedback information at multiple alternative feedback opportunities.
  • it may include one of the following scenarios: the receiving end does not detect SL transmission, that is, the receiving end The feedback process is not triggered; the receiving end detects the SL transmission but does not receive the SL transmission correctly, the receiving end needs to feedback NACK information, but due to LBT failure, the first feedback information is not sent; the receiving end detects and correctly receives the SL transmission, and the receiving end needs to feedback ACK information, but the first feedback information is not sent due to LBT failure.
  • the sending end may not receive the first feedback information at multiple alternative feedback opportunities, one of the following operations may be included:
  • the second feedback information may be set as NACK information; then the second feedback information may be set as not receiving the first feedback information.
  • the SL transmission operation may be performed according to the second feedback information, wherein the SL transmission may be a unicast transmission with feedback enabled; on this basis
  • performing the SL transmission operation according to the second feedback information may include at least one of the following operations:
  • the retransmission buffer in the process corresponding to the SL transmission can be cleared; if the second feedback information is NACK information, the process corresponding to the SL transmission can be triggered to retransmit the SL transmission (that is, the sending end Resend the SL transmission); if the second feedback information is that the first feedback information has not been received, it can be processed according to the NACK information, triggering the process corresponding to the SL transmission to retransmit the SL transmission, or triggering the process corresponding to the SL transmission to re-request the receiving end to send
  • the first feedback information that is, the sending end re-receives the first feedback information at the set of candidate feedback opportunities corresponding to the SL transmission).
  • the SL transmission sent by the sender is a feedback-enabled multicast type 1 (ie, the first multicast type) transmission, where the first feedback information may include NACK information;
  • the destination receiver may be a group of UEs (a group of UEs composed of multiple UEs is about to be used as the target receiving end, and these multiple UEs can be understood as members of each group in the target receiving end; one UE can refer to one receiving end), for each A receiving end (ie, UE) does not perform feedback if the reception is correct, that is, does not send the first feedback information; if SL transmission is detected but not received correctly, the first feedback information is sent as NACK information.
  • a receiving end ie, UE
  • the feedback resources corresponding to all receivers can be the same resource, that is, the members of the group that do not distinguish the destination receiver, can be that each member in the group does not have a separate identification (Member ID), or all members in the group
  • Member IDs are the same, for example, both are 0 or other values.
  • the sender detects NACK information feedback (that is, the first feedback information is NACK information)
  • the sender can determine that the second feedback information reported to the upper layer is NACK information, that is, the sender can select any one or at least one of multiple feedback opportunities. If the first feedback information is received at an alternative feedback opportunity, the second feedback information may be set as NACK information.
  • the second feedback information may be set as ACK information, or the second feedback information may be set as no first feedback information has been received.
  • the sending end may not receive the first feedback information at multiple feedback opportunities, which may be because the receiving end does not detect SL transmission, that is, the receiving end does not trigger the feedback process.
  • the sender can be allowed to perform multiple blind retransmissions.
  • the second feedback information may be set as NACK information, where N may be predefined by the system, or configured or preconfigured by the network; otherwise, the communication node may set the second feedback information according to the first feedback information in this embodiment.
  • the high layer of the sending end receives the second feedback information corresponding to an SL transmission, at least one of the following operations may be included:
  • the second feedback information is ACK information, clear the retransmission buffer in the corresponding process of SL transmission; if the second feedback information is NACK information, trigger the retransmission of SL transmission in the corresponding process of SL transmission; if the second feedback information is If the first feedback information is not received, it may be processed according to the ACK information.
  • the SL transmission is the first multicast type 1 transmission that enables feedback, including indicating that the transmission type in the SCI corresponding to the SL transmission is the first multicast type, that is, NACK Only feedback (NACK Only feedback may refer to Only NACK information feedback) multicast transmission.
  • NACK Only feedback may refer to Only NACK information feedback
  • the first multicast type since the first multicast type does not distinguish member UEs, it can also be regarded as broadcast, that is, when the broadcast transmission enables NACK Only feedback, it can still be called the first multicast type.
  • the SL transmission sent by the sending end is a feedback-enabled multicast type 1x (that is, the third multicast type) transmission
  • the destination receiving end may be a group of UEs (each UE is a member), each The first feedback information of each member may include NACK information or ACK information; for each receiving end, if the reception is correct, ACK information is fed back, and if SL transmission is detected but not received correctly, the first feedback information is sent as NACK information.
  • the feedback resources corresponding to the ACK information of all receivers may be the same resource, and the feedback resources corresponding to the NACK information of all receivers may also be the same resource.
  • each member in the group does not have a separate identification Member ID, or the Member IDs of all members in the group are the same, for example, they are all 0 or other values.
  • the sending end detects NACK information feedback (that is, the first feedback information), it can determine that the second feedback information reported to the upper layer is NACK information, that is, the sending end receives at any one or at least one of multiple feedback opportunities If the first feedback information contains NACK information, the second feedback information may be set as NACK information. If the sending end receives the first feedback information containing only ACK information at multiple alternative feedback opportunities, set the second feedback information as ACK information; otherwise, set the second feedback information as NACK information. If the sending end may not receive the first feedback information at multiple candidate feedback opportunities, it may set the second feedback information as NACK information, or set the second feedback information as not receiving the first feedback information.
  • NACK information feedback that is, the first feedback information
  • the sending end may not receive the first feedback information at multiple alternative feedback opportunities, and it is possible that the receiving end correctly receives the SL transmission, but because there is no LBT success, there is no chance to send the first feedback information to Send UE.
  • the sending end may continue to request the receiving end to send the first feedback information.
  • the second feedback information may be set as no feedback is detected.
  • the SL transmission operation can be performed according to the second feedback information, wherein the SL transmission can be a multicast transmission with feedback enabled; on this basis
  • performing the SL transmission operation according to the second feedback information may include at least one of the following operations:
  • the second feedback information is ACK information
  • clear the retransmission buffer in the corresponding process of SL transmission if the second feedback information is NACK information, trigger the retransmission of SL transmission in the corresponding process of SL transmission; if the second feedback information is If the first feedback information is not received, the retransmission buffer in the process corresponding to the SL transmission may be cleared.
  • the SL transmission being a feedback-enabled multicast type 1x transmission may include indicating that the transmission type in the SCI corresponding to the SL transmission is multicast type 1x.
  • the multicast type 1x since the multicast type 1x does not distinguish member UEs, it can also be regarded as broadcasting, that is, when the broadcast transmission enables ACK information/NACK information feedback, it can still be called the multicast type 1x.
  • the second feedback information of the current SL transmission may be determined according to the feedback corresponding to the SL transmission before the current SL transmission.
  • the SL transmission sent by the sending end is a feedback-enabled multicast type 2 (ie, the second multicast type) transmission
  • the destination receiving end may be a group of UEs (each UE is a member), wherein
  • the first feedback information of each member may include NACK information or ACK information; for each receiving end, if the reception is correct, ACK information is fed back, and if SL transmission is detected but not received correctly, the first feedback information is sent as NACK information.
  • each receiving end corresponds to its own feedback resource for feeding back ACK information or NACK information. That is, to distinguish the members in the group, each member in the group can have a separate identification Member ID.
  • the sending end needs to detect the ACK information feedback of all group members before it can determine that the second feedback information reported to the upper layer is ACK information, otherwise the second feedback information is set as NACK information; for each group member, if the sending end is in at least one If the first feedback information of a member UE received in the feedback opportunity is ACK information, it may be determined that the first feedback information of the member UE is ACK information; otherwise, it may be determined that the first feedback information of the member UE is NACK information. If the first feedback information of each group member is ACK information, the sending end may set the second feedback information as ACK information, otherwise, set the second feedback information as NACK information.
  • the above-mentioned feedback timing is not necessarily one of multiple candidate feedback timings corresponding to the current SL transmission, and may also be a feedback timing corresponding to the previous SL transmission.
  • the previous SL transmission and the current SL transmission belong to the same group of SL transmissions, for example, they transmit the same transmission block (Transmission Block, TB), or belong to the same HARQ process. That is, at least one feedback opportunity belongs to multiple candidate feedback opportunities corresponding to the SL transmission; or at least one feedback opportunity belongs to multiple candidate feedback opportunities corresponding to a group of SL transmissions where the SL transmission is located.
  • the sending end may continue to request the receiving end to send the first feedback information.
  • the second feedback information may be set as no feedback is detected.
  • the SL transmission operation can be performed according to the second feedback information, wherein the SL transmission can be a multicast transmission that enables feedback; on this basis
  • performing the SL transmission operation according to the second feedback information may include at least one of the following operations:
  • the second feedback information is ACK information
  • clear the retransmission buffer in the corresponding process of SL transmission if the second feedback information is NACK information, trigger the retransmission of SL transmission in the corresponding process of SL transmission; if the second feedback information is If the first feedback information is not received, the retransmission buffer in the process corresponding to the SL transmission may be cleared.
  • the SL transmission being the second multicast type transmission enabling feedback may include indicating that the transmission type in the SCI corresponding to the SL transmission is the second multicast type.
  • the receiving end sends the first feedback information:
  • the sending end may send the first feedback information on the multiple candidate feedback timings.
  • the feedback may be ACK information/NACK information, or NACK Only feedback.
  • FIG. 3 is a flowchart of another side link communication method provided by an embodiment. As shown in FIG. 3 , the method provided by this embodiment includes 210 , 220 and 230 , and the method can be applied at a receiving end.
  • an SL transmission is received, the SL transmission corresponding to a set of candidate feedback opportunities.
  • first feedback information is determined.
  • the receiving end receives the SL transmission sent by the sending end, wherein one SL transmission may correspond to a set of alternative feedback opportunities; the receiving end determines the first feedback information; after determining the first feedback information, the receiving end selects A decision process may be performed before at least one candidate feedback opportunity in the feedback opportunity set, and at least one candidate feedback opportunity judged to be successful may be obtained through the decision process, wherein the decision process may be used to determine whether to send the first feedback information ; On this basis, at least one candidate feedback opportunity may be selected from the candidate feedback opportunities determined to be successful, so as to send the first feedback information to the corresponding sending end.
  • the receiving end receives the SL transmission, and determines the first feedback information corresponding to the SL transmission, and on this basis, executes the judgment process to send the first Feedback information to the corresponding sending end, this method can send the first feedback information to the sending end, thereby effectively preventing the sending end from making wrong operations without obtaining the first feedback information, and improving the efficiency and reliability of network communication .
  • the decision process is executed before at least one candidate feedback opportunity in the set of candidate feedback opportunities, and the first feedback information is sent at least one candidate feedback opportunity in the candidate feedback opportunities judged to be successful, including : Execute the decision process before each candidate feedback opportunity in the candidate feedback opportunity set in turn, until the first feedback information is sent at the candidate feedback opportunity judged to be successful, or until the judgment of each candidate feedback opportunity is completed.
  • the decision process includes a channel access process; each candidate feedback opportunity corresponds to a respective channel access type.
  • the decision process is a channel access process (LBT process), and different candidate feedback opportunities correspond to respective channel access types.
  • LBT process channel access process
  • the decision process is performed before at least one candidate feedback opportunity in the set of candidate feedback opportunities, including one of the following:
  • the decision process is performed before at least one candidate feedback opportunity in the set of candidate feedback opportunities, including: changing the channel access type if the channel access process performed before one candidate feedback opportunity fails And use the changed channel access type to execute the channel access process before the next candidate feedback opportunity.
  • configuring or predefining the channel access type of each candidate feedback opportunity; configuring or predefining the channel access type of each candidate feedback opportunity includes at least one of the following:
  • the side link communication method is exemplarily described below through different embodiments.
  • the decision process may be performed before at least one of the candidate feedback opportunities in the multiple time domains, so as to determine whether the first feedback information can be sent send.
  • the decision process is a channel access process (ie, LBT process).
  • the receiving end starts from the first candidate feedback opportunity among the multiple time-domain alternative feedback opportunities corresponding to SL transmission, and performs the LBT process before the alternative feedback opportunity, if the LBT is successful , then the first feedback information can be sent. If the LBT fails, the LBT process will continue at the next alternative feedback opportunity, and so on, until the sending of the first feedback information is completed at the alternative feedback opportunity where the LBT succeeds, or until each alternative feedback.
  • the judgment of the LBT process is completed at the feedback timing (it can be seen which of the two situations occurs first, the one that occurs first will be used), then the first feedback information sending process can be ended.
  • the decision process may include a channel access process; each candidate feedback opportunity corresponds to a respective channel access type (such as type 1, type 2, type 2A, etc.).
  • the above-mentioned continuation of the LBT process at the next alternative feedback opportunity may include one of the following:
  • the receiving end will continue to use the already running first type (ie type 1) channel access process at the next alternative feedback opportunity; Run a new type 1 channel access process before an alternative feedback opportunity, and the new type 1 channel access process can use the same CAPC as the type 1 channel access process that has already been run at the previous alternative feedback opportunity; receive The terminal runs a new type1 channel access process before the next alternative feedback opportunity, and the CAPC used by the new type 1 channel access process can be higher than the CAPC used by the type 1 channel access process already running; the receiving end Run a new type 1 channel access process before the next alternative feedback opportunity, and the CAPC used by the new type 1 channel access process may be lower than the CAPC used by the already running type 1 channel access process; the receiving end The channel access process of the second type (namely type 2) can be run before the next alternative feedback opportunity.
  • the second type namely type 2
  • the channel access type can be changed to allow the receiving end to use the changed channel access type at the next alternative feedback opportunity Execute the channel access procedure. For example, when accessing using type 1 fails at alternative feedback opportunity n, the receiving end can use type 2 (2A /2B/2C) to access the channel (i.e. execute the channel access process); or, when using type 2A access at the alternative feedback opportunity n fails, the receiver can use type 2B at the alternative feedback opportunity n+1 /2C to perform the channel access process; or, when the type 2B access fails at the alternative feedback opportunity n, the receiver can use the type 2C to perform the channel access process at the alternative feedback opportunity n+1.
  • the channel access type may be changed to allow the receiver to monitor more channels at the next alternative feedback opportunity to avoid conflicts. For example, when using type 2 to access at alternative feedback opportunity n fails, the receiver can use type 1 to perform channel access process at alternative feedback opportunity n+1; or, when using After type 2B access fails, the receiving end can use type 2A to perform the channel access process at the alternative feedback opportunity n+1.
  • a decision process is performed before at least one of the candidate feedback opportunities in the multiple time domains, so as to determine whether the first feedback information can be sent.
  • the decision process is a channel access process (ie, LBT process).
  • configuring or predefining the channel access type of the LBT process of each alternative feedback opportunity may include at least one of the following:
  • Configure or predefine the channel access type of an alternative feedback opportunity as type 1 (namely type 1), and configure or predefine the CAPC corresponding to type 1; configure or predefine the channel access type of an alternative feedback opportunity as type 2A (i.e. type 2A); configure or predefine the channel access type of an alternative feedback opportunity as type 2B (i.e. type 2B); configure or predefine the channel access type of an alternative feedback opportunity as type 2C (i.e. type 2C).
  • the channel access type of each time slot can be configured or predefined to make it easier for the receiving end to access the channel. For example, the LBT duration probability corresponding to the channel access type used at the later alternative feedback opportunity is shorter, as shown below:
  • the next alternative feedback opportunity can be configured or predefined to use the next allowed lower CAPC to compete for the access channel;
  • a lower CAPC value can represent a shorter LBT duration with a high probability, or a higher priority; or, if the nth alternative feedback opportunity is configured or predefined to use type 1, and the CAPC is a p contention channel, then
  • the next candidate feedback opportunity can be configured or predefined as using type2 access channel; or, the last candidate feedback opportunity can be configured or predefined to use type 2C, 2B or 2A access channel.
  • Fig. 4 is a flow chart of another side link communication method provided by an embodiment. As shown in Fig. 4, the method provided by this embodiment includes 310 and 320, and this method can be applied at a high layer.
  • the higher layer receives the second feedback information reported by the sending end, and may perform an SL transmission operation according to the received second feedback information.
  • the high layer executes the SL transmission operation according to the received second feedback information, which can improve the efficiency and reliability of network communication.
  • the SL transmission is a feedback-enabled unicast transmission; performing an SL transmission operation according to the second feedback information includes at least one of the following:
  • the second feedback information includes ACK information, clear the retransmission buffer in the corresponding process of SL transmission; if the second feedback information includes NACK information, it will trigger the retransmission of SL transmission in the corresponding process of SL transmission; the second feedback information includes not received
  • the first feedback information triggers the process corresponding to the SL transmission to retransmit the SL transmission, or triggers the process corresponding to the SL transmission to request to receive the first feedback information again.
  • the SL transmission is a feedback-enabled multicast transmission; performing an SL transmission operation according to the second feedback information includes at least one of the following:
  • the second feedback information includes ACK information, clear the retransmission buffer in the corresponding process of SL transmission; if the second feedback information includes NACK information, it will trigger the retransmission of SL transmission in the corresponding process of SL transmission; the second feedback information includes not received For the first feedback information, the retransmission buffer in the process corresponding to the SL transmission is cleared.
  • Fig. 5 is a flow chart of another side link communication method provided by an embodiment. As shown in Fig. 5, the method provided by this embodiment includes 410, 420 and 430. This method can be applied at the sending end for a Group SL transmission.
  • a set of SL transmissions is sent, each SL transmission in the set corresponding to a set of candidate feedback opportunities.
  • first feedback information is received at a set of candidate feedback occasions corresponding to the set of SL transmissions.
  • the sending end sends a group of SL transmissions to the corresponding receiving end, wherein each SL transmission in a group of SL transmissions may correspond to a set of alternative feedback opportunities; Collectively receive the first feedback information sent by the receiving end; finally, determine the third feedback information according to the first feedback information, and report the determined third feedback information to the network device, where the network device may be a base station.
  • the sending end sends a group of SL transmissions, and receives the first feedback information returned by the corresponding receiving end at a set of alternative feedback opportunities. Reporting the third feedback information can effectively prevent the sending end from making wrong operations without obtaining the first feedback information, thereby improving the efficiency and reliability of network communication.
  • a group of SL transmissions includes at least one SL transmission; determining third feedback information reported to a higher layer according to the first feedback information includes:
  • the second feedback information corresponding to each SL transmission is determined according to the first feedback information received at the candidate feedback opportunity set corresponding to each SL transmission; the third feedback information is determined according to the second feedback information corresponding to each SL transmission.
  • the SL transmission is unicast transmission with feedback enabled; determining the third feedback information according to the second feedback information corresponding to each SL transmission includes:
  • the second feedback information corresponding to at least one or the last SL transmission in a group of SL transmissions is ACK information, then the third feedback information is set as ACK information, otherwise, the third feedback information is set as NACK information; or, the third feedback information is set as NACK information;
  • the third feedback information is set to be the same as the second feedback information corresponding to the last SL transmission in a group of SL transmissions.
  • the SL transmission is the first multicast type transmission that enables feedback;
  • the third feedback information is determined according to the second feedback information corresponding to each SL transmission, including:
  • the third feedback information is set as ACK information; otherwise, the third feedback information is set as NACK information.
  • the SL transmission is the second multicast type transmission that enables feedback;
  • the third feedback information is determined according to the second feedback information corresponding to each SL transmission, including:
  • the second feedback information corresponding to at least one or the last SL transmission in a group of SL transmissions is ACK information
  • set the third feedback information as ACK information otherwise, set the third feedback information as NACK information.
  • the SL transmission is a third multicast type transmission that enables feedback; the third feedback information is determined according to the second feedback information corresponding to each SL transmission, including:
  • the third feedback information is set as ACK information; otherwise, the third feedback information is set as NACK information.
  • the side link communication method is exemplarily described below through different embodiments.
  • the transmission resources of the sending end may be scheduled by a network device (such as a base station), so as to send a group of SL transmissions on the scheduled resources.
  • a network device such as a base station
  • the base station schedules resources for UE-A to perform the first transmission and 2 retransmissions of a TB.
  • UE-A has 3 transmission opportunities or transmission resources on the allocated transmission resources, and each transmission opportunity can correspond to a backup
  • the set of optional feedback opportunities, that is, this group of SL transmissions can include at most 3 sets of candidate feedback opportunities, depending on the number of actual SL transmissions in a group of SL transmissions. It is assumed that UE-A has performed N times of SL transmission, and N is less than or equal to 3 (the number of resources allocated by the base station).
  • a group of SL transmissions is sent, where each SL transmission in a group of SL transmissions may correspond to a set of candidate feedback opportunities, and the sending end selects a set of candidate feedback opportunities corresponding to a group of SL transmissions
  • the set receives the first feedback information, and determines, according to the first feedback information, third feedback information to report to the network device (such as a base station).
  • the number of candidate feedback opportunities contained in each set of candidate feedback opportunities may be the same or different.
  • the method for determining the second feedback information in the above embodiments of the present application may be used to determine the third feedback information, that is, the two are equivalent.
  • the method for determining the second feedback information in the above-mentioned embodiment of the present application may be used to first determine the second feedback information corresponding to each SL transmission, where Basically, the third feedback information reported to the base station may be determined according to the second feedback information corresponding to each SL transmission.
  • determining the third feedback information according to the second feedback information corresponding to each SL transmission may include: if at least one or the last SL transmission in a group of SL transmissions corresponds to If the second feedback information is ACK information, the third feedback information can be set as ACK information, otherwise the third feedback information can be set as NACK information; or, the third feedback information can be set as the last in a group of SL transmissions One SL transmits the corresponding second feedback information.
  • determining the third feedback information according to the second feedback information corresponding to each SL transmission may include: if a group of SL transmissions The second feedback information corresponding to the last SL transmission is ACK information. For example, if the first feedback information is no feedback, the third feedback information can be set as ACK information, otherwise, the third feedback information can be set as NACK information.
  • determining the third feedback information according to the second feedback information corresponding to each SL transmission may include: if a group of SL transmissions
  • the second feedback information corresponding to the last SL transmission in is ACK information (for example, ACK information is received and NACK information is not received), then the third feedback information can be set as ACK information, otherwise the third feedback information can be set as NACK information.
  • determining the third feedback information according to the second feedback information corresponding to each SL transmission may include: if a group The second feedback information corresponding to at least one or the last SL transmission in the SL transmission is ACK information (such as detecting the ACK information feedback of each member in the group), then the third feedback information can be set as the ACK information, otherwise the ACK information can be set to The third feedback information is set as NACK information.
  • the first feedback information may be the feedback result detected at one feedback opportunity
  • the second feedback information may be the feedback information corresponding to one SL transmission
  • the third feedback information may be the feedback information corresponding to a group of SL transmissions. a feedback message.
  • Fig. 6 is a schematic structural diagram of a side link communication device provided by an embodiment. As shown in Figure 6, the side link communication device includes:
  • the first sending module 510 is configured to send SL transmission, and the SL transmission corresponds to a set of alternative feedback opportunities; the first receiving module 520 is configured to receive first feedback information at the set of alternative feedback opportunities; the first reporting module 530. Set to report second feedback information to a high layer according to the first feedback information.
  • the sending end receives the first feedback information returned by the corresponding receiving end at a set of alternative feedback opportunities, and on this basis, the sending end reports the second feedback information to the upper layer according to the received first feedback information, It can effectively prevent the sending end from making wrong operations without obtaining the first feedback information, thereby improving the efficiency and reliability of network communication.
  • the SL transmission is unicast transmission with feedback enabled, and the first feedback information includes NACK information or ACK information.
  • the second feedback information is set to be the same as the received first feedback information.
  • the second feedback information is set as NACK information, or the second feedback information is set as the first feedback information is not received.
  • the SL transmission is the first multicast type transmission with feedback enabled, and the first feedback information includes NACK information.
  • the second feedback information is set as NACK information.
  • the second feedback information is set as ACK information, or the second feedback information is set as the first feedback information is not received.
  • the transport block carried by the SL transmission is the first transmission, or the transport block carried by the SL transmission is the nth transmission, and n is less than or equal to N, then the second feedback information is set as NACK information, where N is positive integer
  • the SL transmission is a feedback-enabled second multicast type transmission
  • the first feedback information of each member includes NACK information or ACK information.
  • the first feedback information of a member UE when the first feedback information of a member UE is received as ACK information at at least one alternative feedback opportunity, it is determined that the first feedback information of the member UE is ACK information; otherwise, it is determined that the first feedback information of the member UE is ACK information.
  • the feedback information is NACK information.
  • At least one feedback opportunity belongs to the set of candidate feedback opportunities corresponding to the SL transmission; or, at least one feedback opportunity belongs to the set of candidate feedback opportunities corresponding to the group of SL transmissions where the SL transmission is located.
  • the second feedback information when the first feedback information of each member in the member group is received as ACK information, the second feedback information is set as ACK information; otherwise, the second feedback information is set as NACK information.
  • the SL transmission is the third multicast type transmission with feedback enabled, and the first feedback information of each member includes NACK information or ACK information.
  • the second feedback information is set as NACK information.
  • the second feedback information is set as ACK information; otherwise, the second feedback information is set as NACK information.
  • the second feedback information is set as NACK information, or the second feedback information is set as the first feedback information is not received.
  • the SL transmission belongs to a group of SL transmissions; the data blocks of a group of SL transmissions are the same, or, a group of SL transmissions belongs to one SL process, or, a group of SL transmissions includes at least one SL transmission indicated by the network or a high layer Or a transmission corresponding to at least one authorized resource.
  • the side link communication device proposed in this embodiment belongs to the same concept as the side link communication method proposed in the above embodiment.
  • Fig. 7 is a schematic structural diagram of a side link communication device provided by an embodiment. As shown in Figure 7, the side link communication device includes:
  • the SL transmission receiving module 610 is configured to receive the SL transmission, and the SL transmission corresponds to a set of candidate feedback opportunities.
  • the determination module 620 is configured to determine the first feedback information.
  • the decision execution module 630 is configured to execute the decision process before at least one candidate feedback opportunity in the set of candidate feedback opportunities, and send the first 1. Feedback information.
  • the receiving end receives the SL transmission and determines the first feedback information corresponding to the SL transmission. Sending the first feedback information to the corresponding sending end at an appropriate time, this method can send the first feedback information to the sending end, thereby effectively preventing the sending end from making wrong operations without obtaining the first feedback information, and improving network communication. efficiency and reliability.
  • the decision execution module 630 is configured to: execute the decision process before each candidate feedback opportunity in the set of candidate feedback opportunities in turn, until the first feedback information is sent at the candidate feedback opportunity that is judged to be successful, Or, until the judgment of each candidate feedback opportunity is completed.
  • the decision process includes a channel access process; each candidate feedback opportunity corresponds to a respective channel access type.
  • the decision process is performed before at least one candidate feedback opportunity in the set of candidate feedback opportunities, including one of the following:
  • the decision process is performed before at least one candidate feedback opportunity in the set of candidate feedback opportunities, including: changing the channel access type if the channel access process performed before one candidate feedback opportunity fails And use the changed channel access type to execute the channel access process before the next candidate feedback opportunity.
  • configuring or predefining the channel access type of each alternative feedback opportunity; configuring or predefining the channel access type of each alternative feedback opportunity includes at least one of the following:
  • the side link communication device proposed in this embodiment belongs to the same concept as the side link communication method proposed in the above embodiment.
  • Fig. 8 is a schematic structural diagram of a side link communication device provided by an embodiment. As shown in Figure 8, the side link communication device includes:
  • the second receiving module 710 is configured to receive second feedback information; the executing module 720 is configured to execute an SL transmission operation according to the second feedback information.
  • the high layer receives the second feedback information reported by the sending end, and may perform an SL transmission operation according to the received second feedback information.
  • the high layer executes the SL transmission operation according to the received second feedback information, which can improve the efficiency and reliability of network communication.
  • the SL transmission is a feedback-enabled unicast transmission; performing an SL transmission operation according to the second feedback information includes at least one of the following:
  • the second feedback information includes ACK information, clear the retransmission buffer in the corresponding process of SL transmission; if the second feedback information includes NACK information, it will trigger the retransmission of SL transmission in the corresponding process of SL transmission; the second feedback information includes not received
  • the first feedback information triggers the process corresponding to the SL transmission to retransmit the SL transmission, or triggers the process corresponding to the SL transmission to request to receive the first feedback information again.
  • the SL transmission is a feedback-enabled multicast transmission; performing an SL transmission operation according to the second feedback information includes at least one of the following:
  • the second feedback information includes ACK information, clear the retransmission buffer in the corresponding process of SL transmission; if the second feedback information includes NACK information, it will trigger the retransmission of SL transmission in the corresponding process of SL transmission; the second feedback information includes not received For the first feedback information, the retransmission buffer in the process corresponding to the SL transmission is cleared.
  • Fig. 9 is a schematic structural diagram of a side link communication device provided by an embodiment. As shown in Figure 9, the side link communication device includes:
  • the second sending module 810 is configured to send a group of SL transmissions, and each SL transmission in the group of SL transmissions corresponds to a set of candidate feedback opportunities.
  • the third receiving module 820 is configured to receive first feedback information at a set of candidate feedback opportunities corresponding to the group of SL transmissions.
  • the second reporting module 830 is configured to determine third feedback information to report to the network device according to the first feedback information.
  • the sending end sends a group of SL transmissions, and collectively receives the first feedback information returned by the corresponding receiving end at an alternative feedback opportunity.
  • the sending end The first feedback information reports the third feedback information to the upper layer, which can effectively prevent the sending end from making wrong operations without obtaining the first feedback information, thereby improving the efficiency and reliability of network communication.
  • a group of SL transmissions includes at least one SL transmission; the second reporting module 830 includes:
  • the first determination unit is configured to determine the second feedback information corresponding to each SL transmission according to the first feedback information received at the set of alternative feedback opportunities corresponding to each SL transmission; the second determination unit is configured to determine the second feedback information corresponding to each SL transmission The corresponding second feedback information is transmitted to determine third feedback information.
  • the SL transmission is unicast transmission with feedback enabled; the second determination unit is set to:
  • the second feedback information corresponding to at least one or the last SL transmission in a group of SL transmissions is ACK information, then the third feedback information is set as ACK information, otherwise, the third feedback information is set as NACK information; or,
  • the third feedback information is set to be the same as the second feedback information corresponding to the last SL transmission in a group of SL transmissions.
  • the SL transmission is the first multicast type transmission that enables feedback; the second determination unit is set to:
  • the third feedback information is set as ACK information; otherwise, the third feedback information is set as NACK information.
  • the SL transmission is the second multicast type transmission that enables feedback; the second determining unit is set to:
  • the second feedback information corresponding to at least one or the last SL transmission in a group of SL transmissions is ACK information
  • set the third feedback information as ACK information otherwise, set the third feedback information as NACK information.
  • the SL transmission is a third multicast type transmission that enables feedback;
  • the second determining unit is set to:
  • the third feedback information is set as ACK information, otherwise, the third feedback information is set as NACK information.
  • FIG. 10 is a schematic diagram of the hardware structure of a communication node provided in an embodiment.
  • the communication node provided in the present application includes a memory 920, a processor 910 and A computer program stored in the memory and operable on the processor, when the processor 910 executes the program, implements the above side link communication method.
  • the communication node may also include a memory 920; there may be one or more processors 910 in the communication node, and one processor 910 is taken as an example in FIG. 10; the memory 920 is used to store one or more programs; the one or more The program is executed by the one or more processors 910, so that the one or more processors 910 implement the side link communication method as described in the embodiment of the present application.
  • the communication node further includes: a communication device 930 , an input device 940 and an output device 950 .
  • the processor 910, the memory 920, the communication device 930, the input device 940, and the output device 950 in the communication node may be connected through a bus or in other ways. In FIG. 10, connection through a bus is taken as an example.
  • the input device 940 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the communication node.
  • the output device 950 may include a display device such as a display screen.
  • Communications device 930 may include a receiver and a transmitter.
  • the communication device 930 is configured to perform information sending and receiving communication according to the control of the processor 910 .
  • the memory 920 can be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the side-link communication method described in the embodiment of the present application (for example, side-link communication The first sending module 510, the first receiving module 520, and the first reporting module 530 in the device); or, the program instructions/modules corresponding to the side link communication method described in the embodiment of the present application (for example, the side link communication device SL transmission receiving module 610, determination module 620 and decision execution module 630); or, program instructions/modules corresponding to the side link communication method as described in the embodiment of the present application (for example, the second side link communication device in the side link communication device) receiving module 710 and execution module 720); or, as described in the embodiment of the present application, the program instructions/modules corresponding to the side link communication method (for example, the second sending module 810 and the third receiving module 820 in the side link communication device and the second reporting module 830).
  • the side link communication method for example, the
  • the memory 920 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the communication node, and the like.
  • the memory 920 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.
  • memory 920 may include memory located remotely from processor 910, which remote memory may be connected to a communication node through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • An embodiment of the present application further provides a computer-readable storage medium, where the storage medium stores a computer program, and when the computer program is executed by a processor, implements the side link communication method described in any one of the embodiments of the present application.
  • the side link communication method includes: sending SL transmission, where the SL transmission corresponds to a set of candidate feedback opportunities; receiving first feedback information at the set of candidate feedback opportunities; Report the second feedback information to the high level.
  • the side link communication method includes: receiving SL transmission, where the SL transmission corresponds to a set of alternative feedback opportunities; determining first feedback information; and at least one candidate feedback in the set of alternative feedback opportunities Executing a decision process before the opportunity, and sending the first feedback information at least one of the candidate feedback opportunities determined to be successful.
  • the side link communication method includes: receiving second feedback information; performing an SL transmission operation according to the second feedback information.
  • the side link communication method includes: sending a group of SL transmissions, each SL transmission in the group of SL transmissions corresponds to a set of candidate feedback opportunities; The feedback opportunity set receives first feedback information; and determines third feedback information reported to the network device according to the first feedback information.
  • the computer storage medium in the embodiments of the present application may use any combination of one or more computer-readable media.
  • the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
  • a computer-readable storage medium may be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof.
  • Examples (non-exhaustive list) of computer-readable storage media include: electrical connections with one or more conductors, portable computer disks, hard disks, Random Access Memory (RAM), Read Only Memory (Read Only) Memory, ROM), Erasable Programmable Read Only Memory (Erasable Programmable Read Only Memory, EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination of the above.
  • a computer readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.
  • a computer readable signal medium may include a data signal carrying computer readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • a computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. .
  • Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wires, optical cables, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.
  • any appropriate medium including but not limited to: wireless, wires, optical cables, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.
  • Computer program codes for performing the operations of the present application may be written in one or more programming languages or combinations thereof, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional A procedural programming language, such as the "C" language or similar programming language.
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
  • the remote computer can be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (such as through the Internet using an Internet service provider). connect).
  • LAN local area network
  • WAN wide area network
  • connect such as AT&T, MCI, Sprint, EarthLink, MSN, GTE, etc.
  • user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.
  • the various embodiments of the present application can be implemented in hardware or special purpose circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software, which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.
  • Embodiments of the present application may be realized by a data processor of a mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware.
  • Computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source or object code.
  • ISA Instruction Set Architecture
  • Any logic flow block diagrams in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions.
  • Computer programs can be stored on memory.
  • the memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to Read-Only Memory (ROM), Random Access Memory (RAM), Optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD), etc.
  • Computer-readable media may include non-transitory storage media.
  • Data processors may be any Types, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), programmable logic devices (Field-Programmable Gate Array , FPGA) and processors based on multi-core processor architectures.
  • DSP Digital Signal Processing
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • processors based on multi-core processor architectures.

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Abstract

一种边链路通信方法、通信节点及存储介质。该边链路通信方法包括:发送边链路SL传输,SL传输对应一个备选反馈时机集合;在备选反馈时机集合接收第一反馈信息;根据第一反馈信息向高层上报第二反馈信息。

Description

边链路通信方法、通信节点及存储介质 技术领域
本申请涉及无线通信网络技术领域,例如涉及一种边链路通信方法、通信节点及存储介质。
背景技术
直连通信也可以称之为边链路(Sidelink,SL)通信,SL通信运行在许可频段或者专用频段上。随着SL通信的发展,在传统的免许可频段(Unlicensed Band)进行SL发送的需求也越来越强烈。在免许可频段进行SL的发送之前,按照相关的频段使用规范,需要进行信道接入过程,一般称之为先听后说(Listen Before Talk,LBT)过程,若在LBT过程对应的检测时长内检信道资源被判定为空闲(LBT成功),发送端可以继续发送SL,否则,发送端需要放弃传输SL。发送端可以发送一个SL传输,并且其可以对应有反馈信号或者反馈信息,接收端可以发送上述反馈信息,从而发送端通过接收反馈信息获取其发送的SL传输的结果。如果接收端LBT失败,或者由于功率限制或者优先级原因等不能正常的发送反馈信息,会导致发送端在没有获取反馈信息的情况下做出错误的操作,例如在决定是否重传SL传输上判断出错,影响网络效率和可靠性。
发明内容
本申请提供一种边链路通信方法、通信节点及存储介质。
本申请实施例提供一种边链路通信方法,包括:
发送边链路SL传输,所述SL传输对应一个备选反馈时机集合;在所述备选反馈时机集合接收第一反馈信息;根据所述第一反馈信息向高层上报第二反馈信息。
本申请实施例还提供了一种边链路通信方法,包括:
接收边链路SL传输,所述SL传输对应一个备选反馈时机集合;确定第一反馈信息;在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,并在判决为成功的备选反馈时机中的至少一个备选反馈时机发送所述第一反馈信息。
本申请实施例还提供了一种边链路通信方法,包括:
接收第二反馈信息;根据所述第二反馈信息执行边链路SL传输操作。
本申请实施例还提供了一种边链路通信方法,包括:
发送一组边链路SL传输,所述一组SL传输中的每个SL传输对应一个备选反馈时机集合;在所述一组SL传输对应的备选反馈时机集合接收第一反馈信息;根据所述第一反馈信息确定向网络设备上报的第三反馈信息。
本申请实施例还提供了一种通信节点,包括:存储器、处理器以及存储在存储器上并可在处理器上运行的计算机程序,所述处理器执行所述程序时实现上述的边链路通信方法。
本申请实施例还提供了一种计算机可读存储介质,计算机可读存储介质上存储有计算机程序,该程序被处理器执行时实现上述的边链路通信方法。
附图说明
图1为一实施例提供的一种LBT过程的示意图;
图2为一实施例提供的一种边链路通信方法的流程图;
图3为一实施例提供的另一种边链路通信方法的流程图;
图4为一实施例提供的又一种边链路通信方法的流程图;
图5为一实施例提供的又一种边链路通信方法的流程图;
图6为一实施例提供的一种边链路通信装置的结构示意图;
图7为一实施例提供的一种边链路通信装置的结构示意图;
图8为一实施例提供的一种边链路通信装置的结构示意图;
图9为一实施例提供的一种边链路通信装置的结构示意图;
图10为一实施例提供的一种通信节点的硬件结构示意图。
具体实施方式
下面结合附图和实施例对本申请进行说明。此处所描述的具体实施例仅仅用于解释本申请。为了便于描述,附图中仅示出了与本申请相关的部分。
一般的LBT过程(也可称为信道接入过程)发生在通信节点(如通信节点可以是基站或终端)进行传输之前,传输资源可以为授权(Grant)资源,其中LBT过程的长度在时间上的跨度可称之为LBT时长(该LBT时长可以包括一个或多个探测时隙(Sensing slots))。图1为一实施例提供的一种LBT过程的示意图。如图1所示,当LBT时长内信道被确定为空闲(Idle)时,该通信节点可以进行发送。
按照LBT时长是随机的还是确定的,LBT类型可包括两大类,可见3GPP协议TS387.213:
LBT类型1(即第一类型的信道接入过程):LBT时长可为随机值,LBT类型1可以分为多个信道接入优先级(Channel Access Priority Class,CAPC);LBT类型2(即第二类型的信道接入过程):LBT时长可以是确定值,根据值的不同,可以分为,LBT类型2A、LBT类型2B、LBT类型2C等多个子类型。
广义的,LBT类型1中的每个CAPC,LBT类型2中的每个子类型也可以称之为一种信道接入类型。
SL通信系统中,通信节点之间有业务需要传输时,通信节点之间的业务数据不经过其他网络设备的转发,而是直接由数据源通信节点传输给目标通信节点,即通信节点间的直接通信。SL通信可包括多种传输类型(Cast Type):
单播(Unicast):针对单播,只有特定的一个通信节点为接收端,接收端对接收的数据进行反馈,这里的反馈可以是确认(ACKnowledge,ACK)信息反馈或非确认(NonACKnowledge,NACK)信息反馈,即接收端接收正确时,反馈ACK信息,接收错误时反馈NACK信息。
组播(Groupcast):针对组播,只有特定的一组通信节点为接收端,接收端对接收的数据进行反馈;组播类型1:这里的反馈只有NACK信息反馈,即接收端接收正确时,不进行反馈,接收错误时反馈NACK信息;组播类型2:这里的反馈可以是ACK信息反馈或NACK信息反馈,即接收端接收正确时,反馈ACK信息,接收错误时反馈NACK信息。
广播(Broadcast):针对广播,所有周边的用户终端(User Equipment,UE)都可以是接收端,接收端不会对接收的数据进行反馈,即没有ACK信息反馈或NACK信息反馈。另外,对于组播和单播,还可以去使能反馈,即组播和单播的接收端不进行反馈。
在一实施例中,发送端发送一个SL传输,如果使能反馈,会对应一个时域上的反馈时机,一个时域反馈时机根据组播或者单播等传输类型可以包括一个或多个反馈资源,发送端在这个时域反馈时机上检测一个或多个接收端发送的反馈信息(即可指ACK反馈信息或NACK反馈信息),从而判断该SL传输是ACK还是NACK。
在一实施例中,发送端发送一个数据包或者传输块,可能要对该传输块进行不止一次的SL传输,以保证期望的接收端能够正确接收到该数据包或者传输块,可以将这些SL传输称之为一组SL传输。对于所述一组SL传输中的一次SL传输,可以根据接收的反馈信息判断当前SL传输是否正确,用于确定是否 继续下次SL传输。对于一次SL传输可以对应多个时域上的备选反馈时机的场景,例如,一个发送端在时隙n上发送了SL传输,那么对应的,可以在时隙n+T1,n+T2,....,n+TN上接收反馈信息;对于接收端,则可以在多个备选反馈时隙n+T1,n+T2,....,n+TN上进行LBT过程尝试进行反馈信息的发送,从而大大提高反馈信息的发送概率。但是这种一个SL传输对应多个备选反馈时机的方式,需要发送端调整反馈信息接收策略,防止发送端在一个反馈时机没有获取反馈信息的情况下做出错误的操作而影响网络效率。
图2为一实施例提供的一种边链路通信方法的流程图,如图2所示,本实施例提供的方法包括110、120和130,该方法可应用在发送端。
在110中,发送SL传输,所述SL传输对应一个备选反馈时机集合。
在120中,在所述备选反馈时机集合接收第一反馈信息。
在130中,根据所述第一反馈信息向高层上报第二反馈信息。
本实施例中,备选反馈时机集合可以指由多个时域上的备选反馈时机所构成的集合。发送端发送SL传输,其中一个SL传输可以对应一个备选反馈时机集合;发送端可在备选反馈时机集合接收由对应接收端所发送的第一反馈信息;在此基础上,发送端可根据第一反馈信息向自己的高层上报第二反馈信息。
本实施例中,发送端通过在备选反馈时机集合接收由对应接收端所返回的第一反馈信息,在此基础上,发送端根据所接收的第一反馈信息向高层上报第二反馈信息,能够有效避免发送端在没有获取第一反馈信息的情况下做出错误的操作,从而提高网络通信的效率和可靠性。
在一实施例中,SL传输为使能反馈的单播传输,第一反馈信息包括NACK信息或ACK信息。
在一实施例中,在备选反馈时机集合中的任意一个或至少一个备选反馈时机接收到第一反馈信息,则将第二反馈信息设置为与接收到的第一反馈信息相同。
在一实施例中,在备选反馈时机集合未接收到第一反馈信息,则将第二反馈信息设置为NACK信息,或者,将第二反馈信息设置为未接收到第一反馈信息。
在一实施例中,SL传输为使能反馈的第一组播类型传输,第一反馈信息包括NACK信息。
在一实施例中,在备选反馈时机集合中的任意一个或至少一个备选反馈时机接收到第一反馈信息,则将第二反馈信息设置为NACK信息。
在一实施例中,在备选反馈时机集合未接收到第一反馈信息,则将第二反馈信息设置为ACK信息,或者,将第二反馈信息设置为未接收到第一反馈信息。
在一实施例中,SL传输携带的传输块为首次传输,或者SL传输携带的传输块为第n次传输,n小于或等于N,则将第二反馈信息设置为NACK信息,其中,N为正整数。N可以为系统预定义,或者由网络配置或预配置的值。
在一实施例中,SL传输为使能反馈的第二组播类型传输,每个成员的第一反馈信息包括NACK信息或ACK信息。
在一实施例中,在至少一个备选反馈时机接收到一个成员UE的第一反馈信息为ACK信息,则确定该成员UE的第一反馈信息为ACK信息,否则,确定该成员UE的第一反馈信息为NACK信息。
在一实施例中,至少一个反馈时机属于SL传输对应的备选反馈时机集合;或者,至少一个反馈时机属于SL传输所在的一组SL传输对应的备选反馈时机集合。
在一实施例中,接收到成员组中每个成员的第一反馈信息为ACK信息,则将第二反馈信息设置为ACK信息,否则,将第二反馈信息设置为NACK信息。
在一实施例中,SL传输为使能反馈的第三组播类型传输,每个成员的第一反馈信息包括NACK信息或ACK信息。
在一实施例中,在备选反馈时机集合中的任意一个或至少一个备选反馈时机接收到第一反馈信息且第一反馈信息包括NACK信息,则将第二反馈信息设置为NACK信息。
在一实施例中,在备选反馈时机集合接收到的第一反馈信息只包含ACK信息,则将第二反馈信息设置为ACK信息,否则,将第二反馈信息设置为NACK信息。
在一实施例中,在备选反馈时机集合未接收到第一反馈信息,则将第二反馈信息设置为NACK信息,或者将第二反馈信息设置为未接收到第一反馈信息。
在一实施例中,SL传输属于一组SL传输;一组SL传输的数据块相同,或者,一组SL传输属于一个SL进程,或者,一组SL传输包括网络或者高层指示的至少一个SL传输或者至少一个授权资源对应的传输。
以下通过不同实施例对边链路通信方法进行示例性说明。
实施例1
在一种实施例中,SL传输以及其对应的反馈信息属于同一个资源池,网络或者基站会配置或者预配置一个或多个资源池,用于SL信号的发送或者接收。 后续本申请中为了描述方便,以配置代指配置或者预配置。
在一种实施例中,配置SL通信的发送资源池,其中发送资源池可包含一个或多个SL反馈信道资源配置,可包括以下之一:
一个或多个SL反馈信道资源配置以用于接收SL通信对应的反馈信息;一个或多个SL反馈信道资源配置以用于接收或者发送SL通信对应的反馈信息,对于一个SL反馈信道资源配置,可指示其用于发送还是接收SL通信对应的反馈信息。
在一种实施例中,配置SL通信的接收资源池,其中接收资源池可包含一个或多个SL反馈信道资源配置,可包括以下之一:
一个或多个SL反馈信道资源配置以用于发送SL通信对应的反馈信息;一个或多个SL反馈信道资源配置以用于接收或者发送SL通信对应的反馈信息,对于一个SL反馈信道资源配置,可指示其用于发送还是接收SL通信对应的反馈信息。
一个SL反馈信道资源配置还可包括以下至少之一:SL通信与对应的SL反馈信道资源的最小间隔K,SL反馈信道资源的周期N,SL反馈信道资源的频域资源位置和个数,SL反馈信道资源上反馈信息的格式,SL反馈信道资源上反馈信息对应的码域资源(例如序列的循环移位信息等)。其中,K值的单位可以是时隙(Slot)或者符号(Symbol),当K值的单位为时隙时,时隙可为资源池内的逻辑时隙,或者为物理时隙。在一种实施例中,当K大于0时,可表示SL反馈信道资源位于其对应的SL通信之前,当K小于0时可表示SL反馈信道资源位于其对应的SL通信之后。或者,在一种实施例中,当K大于0时,可表示SL反馈信道资源位于其对应的SL通信之后,当K小于0时可表示SL反馈信道资源位于其对应的SL通信之前。不同的SL反馈信道资源配置可以对应不同的K值。在一种实施例中,K值可以设为0,可以表示不使能反馈信息,或者SL反馈信道资源和其对应的SL通信在同一个时隙。
在一种实施例中,反馈信息为第一反馈信息。可以为混合式自动重传请求(Hybrid Automatic Repeat reQuest,HARQ)确认信息、信道状况报告信息、资源冲突指示信息、或者参考信号(如信道状态信息参考信号CSI-RS、定位参考信号PRS等)。
在一实施例中,发送端接收第一反馈信息并向高层上报第二反馈信息:
发送端需要在非授权载波上发送一个SL传输,一般情况下,若该SL传输使能了反馈信息,则接收到该SL传输的目的接收端需要发送第一反馈信息至发送端。为了保证该目的接收端能够发送第一反馈信息,可以设置多个时域上的 备选反馈时机,目的接收端在每个备选反馈时机上都可以进行LBT过程,从而可以大大提高接收端发送第一反馈信息的概率;同时,发送端也需要在一个SL传输对应的多个时域上的备选反馈时机接收第一反馈信息,并且根据第一反馈信息向发送端自己的高层上报第二反馈信息,让高层进行相应的重传等操作。
实施例2
在一种实施例中,SL传输为使能反馈的单播传输,其中,第一反馈信息可包括NACK信息或ACK信息;由于目的接收端只有一个,所以发送端只根据这一个目的接收端的第一反馈信息就可以确定上报给高层的第二反馈信息,即发送端在多个备选反馈时机(多个备选反馈时机即备选反馈时机集合)中的任意一个或至少一个备选反馈时机上接收到第一反馈信息,则将第二反馈信息设置为与接收的第一反馈信息相同的值;同样的,如果发送端在多个备选反馈时机中都接收到了第一反馈信息,发送端可以期望所接收到的第一反馈信息具有相同的值。相对应的,对于接收端,如果在多个时域上的备选反馈时机发送第一反馈信息,则这些第一反馈信息可以具有相同的值。
在一种实施例中,SL传输为使能反馈的单播传输可包括,将SL传输对应的侧链控制信息(Sidelink Control Information,SCI)中的传输类型指示为单播。
在一种实施例中,发送端可能在多个备选反馈时机都未收到第一反馈信息,在这种情况下,可以包括以下场景之一:接收端没有检测到SL传输,即接收端没有触发反馈流程;接收端检测到SL传输但没有正确接收SL传输,接收端需要反馈NACK信息,但是由于LBT失败,没有发送第一反馈信息;接收端检测并正确接收SL传输,接收端需要反馈ACK信息,但是由于LBT失败,没有发送第一反馈信息。
如果发送端可能在多个备选反馈时机都未接收到第一反馈信息,则可以包括以下操作之一:
则可将第二反馈信息设置为NACK信息;则可将第二反馈信息设置为未接收到第一反馈信息。
在一种实施例中,若发送端的高层收到一个SL传输对应的第二反馈信息,可根据第二反馈信息执行SL传输操作,其中SL传输可以为使能反馈的单播传输;在此基础上,根据第二反馈信息执行SL传输操作可包括以下至少之一个操作:
若第二反馈信息为ACK信息,则可将SL传输对应进程中的重传缓存清空;若第二反馈信息为NACK信息,则可触发SL传输对应进程进行SL传输的重传(即,发送端重新发送SL传输);若第二反馈信息为未接收到第一反馈信息, 则可按照NACK信息处理,触发SL传输对应进程进行SL传输的重传,或者触发SL传输对应进程重新请求接收端发送第一反馈信息(即,发送端在SL传输对应的备选反馈时机集合重新接收第一反馈信息)。
实施例3
在一种实施例中,发送端发送的SL传输为使能反馈的组播类型1(即第一组播类型)传输,其中第一反馈信息可包括NACK信息;目的接收端可为一组UE(即将由多个UE所构成的一组UE作为目的接收端,这多个UE可理解为目的接收端中的每个组内成员;一个UE可指一个接收端),对于该组中的每一个接收端(即UE),如果接收正确则不进行反馈,即不发送第一反馈信息,如果检测到SL传输但没有接收正确,则发送第一反馈信息为NACK信息。对于组播类型1,所有接收端对应的反馈资源可为相同的资源,即不区分目的接收端的组内的成员,可以为组内各个成员没有单独的标识(Member ID),或者组内所有成员的Member ID相同,例如都为0或者其他值。
发送端只要检测到NACK信息反馈(即第一反馈信息为NACK信息)就可以确定上报给高层的第二反馈信息为NACK信息,即发送端在多个备选反馈时机中的任意一个或至少一个备选反馈时机上接收到第一反馈信息,则可将第二反馈信息设置为NACK信息。
如果发送端可能在多个备选反馈时机都未接收到第一反馈信息,则可将第二反馈信息设置为ACK信息,或者将第二反馈信息设置为没有接收到第一反馈信息。
在一种实施例中,发送端可能在多个备选反馈时机都未收到第一反馈信息,有可能是因为接收端没有检测到SL传输,即接收端没有触发反馈流程。为了提高SL传输可靠性,可以让发送端进行多次盲重传。
在一种实施例中,若SL传输携带的传输块为首次传输,或者SL传输携带的传输块为第n次传输,n小于或等于N,则可将第二反馈信息设置为NACK信息,其中N可为系统预定义,或者由网络配置或预配置;否则,通信节点可按照本实施例中的上述第一反馈信息设置第二反馈信息。
在一种实施例中,若发送端的高层收到一个SL传输对应的第二反馈信息,可以包括以下操作中的至少之一:
若第二反馈信息为ACK信息,则将SL传输对应进程中的重传缓存清空;若第二反馈信息为NACK信息,则触发SL传输对应进程进行SL传输的重传;若第二反馈信息为没有接收到第一反馈信息,则可按照ACK信息处理。
在一种实施例中,SL传输为使能反馈的第一组播类型1传输包括,将SL 传输对应的SCI中的传输类型指示为第一组播类型即NACK Only反馈(NACK Only反馈可指仅有NACK信息反馈)的组播传输。在一种实施例中,由于第一组播类型不区分成员UE,也可以视为广播,即当广播传输使能NACK Only反馈时,仍可称之为第一组播类型。
实施例4
在一种实施例中,发送端发送的SL传输为使能反馈的组播类型1x(即第三组播类型)传输,目的接收端可为一组UE(每一个UE是一个成员),每个成员的第一反馈信息可包括NACK信息或ACK信息;对于每一个接收端,如果接收正确则反馈ACK信息,如果检测到SL传输但没有接收正确,则发送第一反馈信息为NACK信息。对于组播类型1x,所有接收端的ACK信息对应的反馈资源可为相同的资源,所有接收端的NACK信息对应的反馈资源也可为相同的资源。即区分ACK信息和NACK信息的资源但仍然不区分目的接收端的组内的成员UE,可以为组内各个成员没有单独的标识Member ID,或者组内所有成员的Member ID相同,例如都为0或者其他值。
发送端只要检测到NACK信息反馈(即第一反馈信息)就可以确定上报给高层的第二反馈信息为NACK信息,即发送端在多个备选反馈时机中的任意一个或至少一个上接收到含有NACK信息的第一反馈信息,则可将第二反馈信息设置为NACK信息。若发送端在多个备选反馈时机上接收到第一反馈信息只包含ACK信息信息,则将第二反馈信息设置为ACK信息,否则,可将第二反馈信息设置为NACK信息。如果发送端可能在多个备选反馈时机都未收到第一反馈信息,则可将第二反馈信息设置为NACK信息,或者将第二反馈信息设置为未接收到第一反馈信息。
在一种实施例中,发送端可能在多个备选反馈时机都未收到第一反馈信息,有可能是接收端正确接收SL传输,但由于没有LBT成功,没有机会发送第一反馈信息给发送UE。为了避免不必要的重传,可以让发送端继续请求接收端发送第一反馈信息。在一种实施例中,发送端在多个备选反馈时机都未收到第一反馈信息,则可将第二反馈信息设置为没有检测到反馈。
在一种实施例中,若发送端的高层收到一个SL传输对应的第二反馈信息,可根据第二反馈信息执行SL传输操作,其中SL传输可以为使能反馈的组播传输;在此基础上,根据第二反馈信息执行SL传输操作可以包括以下至少之一个操作:
若第二反馈信息为ACK信息,则将SL传输对应进程中的重传缓存清空;若第二反馈信息为NACK信息,则触发SL传输对应进程进行SL传输的重传;若第二反馈信息为没有收到第一反馈信息,则可将SL传输对应进程中的重传缓 存清空。
在一种实施例中,SL传输为使能反馈的组播类型1x传输可包括,将SL传输对应的SCI中的传输类型指示为组播类型1x。在一种实施例中,由于组播类型1x不区分成员UE,也可以视为广播,即当广播传输使能ACK信息/NACK信息反馈时,仍可称之为组播类型1x。
实施例5
对于第二组播类型,可以根据当前SL传输之前的SL传输所对应的反馈,来确定当前SL传输的第二反馈信息。
在一种实施例中,发送端发送的SL传输为使能反馈的组播类型2(即第二组播类型)传输,目的接收端可为一组UE(每一个UE是一个成员),其中每个成员的第一反馈信息可包括NACK信息或ACK信息;对于每一个接收端,如果接收正确则反馈ACK信息,如果检测到SL传输但没有接收正确,则发送第一反馈信息为NACK信息。对于组播类型2,每个接收端对应各自的反馈资源用于反馈ACK信息或者NACK信息。即区分组内的成员,可以为组内各个成员具有单独的标识Member ID。发送端需要检测到所有组成员的ACK信息反馈才可以确定上报给高层的第二反馈信息为ACK信息,否则将第二反馈信息设置为NACK信息;对于每一个组成员,若发送端在至少一个反馈时机中接收到的一个成员UE的第一反馈信息为ACK信息,则可确定该成员UE的第一反馈信息为ACK信息,否则确定该成员UE的第一反馈信息为NACK信息。如果每一个组成员的第一反馈信息都是ACK信息,则发送端就可以将第二反馈信息设置为ACK信息,否则将第二反馈信息设置为NACK信息。
上述反馈时机不一定是当前SL传输对应的多个备选反馈时机中的一个,也可以是之前进行的SL传输所对应的反馈时机。之前的SL传输和当前SL传输属于同一组SL传输,例如传输的是同一个传输块(Transmission Block,TB),或者属于同一个HARQ进程。即,至少一个反馈时机属于SL传输对应的多个备选反馈时机;或者至少一个反馈时机属于SL传输所在的一组SL传输对应的多个备选反馈时机。
在一种实施例中,如果发送端始终都未收到一个或多个成员UE的第一反馈信息,有可能是接收端正确接收SL传输,但由于没有LBT成功,没有机会发送第一反馈信息给发送UE。为了避免不必要的重传,可以让发送端继续请求接收端发送第一反馈信息。在一种实施例中,发送端未收到一个或多个成员UE的第一反馈信息,则可将第二反馈信息设置为没有检测到反馈。
在一种实施例中,若发送端的高层收到一个SL传输对应的第二反馈信息, 可根据第二反馈信息执行SL传输操作,其中SL传输可以为使能反馈的组播传输;在此基础上,根据第二反馈信息执行SL传输操作可以包括以下至少之一个操作:
若第二反馈信息为ACK信息,则将SL传输对应进程中的重传缓存清空;若第二反馈信息为NACK信息,则触发SL传输对应进程进行SL传输的重传;若第二反馈信息为没有收到第一反馈信息,则可将SL传输对应进程中的重传缓存清空。
在一种实施例中,SL传输为使能反馈的第二组播类型传输可包括,将SL传输对应的SCI中的传输类型指示为第二组播类型。
在一实施例中,接收端发送第一反馈信息:
对于SL传输的接收端,当检测到一个SL传输,且被要求发送第一反馈信息时,需要在接收SL传输的资源池上发送第一反馈信息,若SL传输对应多个时域上的备选反馈时机,则发送端可以在该多个备选反馈时机上发送第一反馈信息。如上面实施例所述,根据SL传输的传输类型的不同,反馈可以是ACK信息/NACK信息,或者NACK Only反馈。
本申请实施例还提供一种边链路通信方法。图3为一实施例提供的另一种边链路通信方法的流程图,如图3所示,本实施例提供的方法包括210、220和230,该方法可应用在接收端。
在210中,接收SL传输,所述SL传输对应一个备选反馈时机集合。
在220中,确定第一反馈信息。
在230中,在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,并在判决为成功的备选反馈时机中的至少一个备选反馈时机发送所述第一反馈信息。
本实施例中,接收端接收发送端所发送的SL传输,其中一个SL传输可对应一个备选反馈时机集合;接收端确定第一反馈信息;在确定第一反馈信息之后,接收端在备选反馈时机集合中的至少一个备选反馈时机之前可执行判决过程,通过该判决过程可以得到至少一个判决为成功的备选反馈时机,其中,判决过程可以用于判断是否进行第一反馈信息的发送;在此基础上,可在判决为成功的备选反馈时机中选择至少一个备选反馈时机,以用于发送第一反馈信息至对应的发送端。
本实施例中,接收端接收SL传输,并确定SL传输对应的第一反馈信息, 在此基础上,又通过执行判决过程,以在确定为判决成功的至少一个备选反馈时机上发送第一反馈信息至对应发送端,该方法能够将第一反馈信息发送至发送端,从而有效避免发送端在没有获取第一反馈信息的情况下做出错误的操作,提高了网络通信的效率和可靠性。
在一实施例中,在备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,并在判决为成功的备选反馈时机中的至少一个备选反馈时机发送第一反馈信息,包括:依次在备选反馈时机集合中的每个备选反馈时机之前执行判决过程,直至在判决为成功的备选反馈时机发送第一反馈信息,或者,直至各备选反馈时机的判决完成。
在一实施例中,判决过程包括信道接入过程;各备选反馈时机分别对应于各自的信道接入类型。
本实施例中,判决过程为信道接入过程(LBT过程),不同的备选反馈时机分别对应各自的信道接入类型。
在一实施例中,在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,包括以下之一:
在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前继续执行已运行的第一类型的信道接入过程;在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前执行新的第一类型的信道接入过程,新的第一类型的信道接入过程与已运行的第一类型的信道接入过程使用相同的CAPC;在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前执行新的第一类型的信道接入过程,新的第一类型的信道接入过程使用的CAPC高于已运行的第一类型的信道接入过程使用的CAPC;在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前执行新的第一类型的信道接入过程,新的第一类型的信道接入过程使用的CAPC低于已运行的第一类型的信道接入过程使用的CAPC;在一个备选反馈时机之前执行第一类型的信道接入过程,在下一个备选反馈时机之前执行第二类型的信道接入过程。
在一实施例中,在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,包括:在一个备选反馈时机之前执行的信道接入过程失败,则改变信道接入类型并在下一个备选反馈时机之前使用改变后的信道接入类型执行信道接入过程。
在一实施例中,配置或者预定义每个备选反馈时机的信道接入类型;配置或者预定义每个备选反馈时机的信道接入类型包括以下至少之一:
配置或者预定义一个备选反馈时机的信道接入类型为类型1,并配置或者预定义类型1对应的CAPC;配置或者预定义一个备选反馈时机的信道接入类型为类型2A;配置或者预定义一个备选反馈时机的信道接入类型为类型2B;配置或者预定义一个备选反馈时机的信道接入类型为类型2C。
以下通过不同实施例对边链路通信方法进行示例性说明。
实施例6
当接收端确定需要发送第一反馈信息时,则可在多个时域上的备选反馈时机中的至少一个备选反馈时机之前执行判决过程,以用于判断是否可以进行第一反馈信息的发送。判决过程为信道接入过程(即LBT过程)。
在一种实施例中,接收端在SL传输对应的多个时域上的备选反馈时机中,从第一个备选反馈时机开始,在该备选反馈时机之前进行LBT过程,若LBT成功,则可发送第一反馈信息,若LBT失败则继续在下一个备选反馈时机进行LBT过程,依次类推,直到在LBT成功的备选反馈时机上完成第一反馈信息的发送,或者直到各个备选反馈时机进行LBT过程的判决完成(其中可看二者中哪一种情况先发生,就按照先发生的那种情况),则可结束第一反馈信息发送流程。
在一种实施例中,判决过程可包括信道接入过程;各备选反馈时机分别对应于各自的信道接入类型(如type 1、type 2、type 2A等)。上述中的继续在下一个备选反馈时机进行LBT过程,可包括以下之一:
若在前一个备选反馈时机接收端已经运行了type 1信道接入过程,则在下一个备选反馈时机接收端继续使用已经运行的第一类型(即type 1)信道接入过程;接收端在下一个备选反馈时机之前运行一个新的type 1信道接入过程,且该新的type 1信道接入过程与前一个备选反馈时机已经运行的type 1信道接入过程可使用相同的CAPC;接收端在下一个备选反馈时机之前运行一个新的type1信道接入过程,且该新的type 1信道接入过程使用的CAPC可高于已运行的type 1信道接入过程所使用的CAPC;接收端在下一个备选反馈时机之前运行一个新的type 1信道接入过程,且该新的type 1信道接入过程使用的CAPC可低于已运行的type 1信道接入过程所使用的CAPC;接收端在下一个备选反馈时机之前可运行第二类型(即type 2)的信道接入过程。
在一种实施例中,若接收端在一个备选反馈时机之前执行的信道接入过程失败,则可以通过改变信道接入类型让接收端在下一个备选反馈时机使用改变后的信道接入类型执行信道接入过程。例如,当在备选反馈时机n上使用type 1接入失败后,接收端可以在备选反馈时机n+1(即备选反馈时机n的下一个备选反馈时机)上使用type 2(2A/2B/2C)接入信道(即执行信道接入过程);或者, 当在备选反馈时机n上使用type 2A接入失败后,接收端可以在备选反馈时机n+1上使用type 2B/2C执行信道接入过程;或者,当在备选反馈时机n上使用type 2B接入失败后,接收端可以在备选反馈时机n+1上使用type 2C执行信道接入过程。
在一种实施例中,若接收端在一个备选反馈时机之前执行的信道接入过程失败,可以通过改变信道接入类型让接收端在下一个备选反馈时机更多的监听信道以避免冲突。例如,当在备选反馈时机n上使用type 2接入失败后,接收端可以在备选反馈时机n+1上使用type 1执行信道接入过程;或者,当在备选反馈时机n上使用type 2B接入失败后,接收端可以在备选反馈时机n+1上使用type 2A执行信道接入过程。
实施例7
当接收端确定需要发送第一反馈信息时,则在多个时域上的备选反馈时机中的至少一个备选反馈时机之前执行判决过程,以用于判断是否可以进行第一反馈信息的发送。判决过程为信道接入过程(即LBT过程)。
在一种实施例中,配置或者预定义每一个备选反馈时机的LBT过程的信道接入类型,可包括以下至少之一:
配置或者预定义一个备选反馈时机的信道接入类型为type 1(即类型1),以及配置或预定义类型1对应的CAPC;配置或者预定义一个备选反馈时机的信道接入类型为type 2A(即类型2A);配置或者预定义一个备选反馈时机的信道接入类型为type 2B(即类型2B);配置或者预定义一个备选反馈时机的信道接入类型为type 2C(即类型2C)。
在一种实施例中,可以通过配置或预定义每个时隙的信道接入类型让接收端更容易的接入信道。例如,越靠后的备选反馈时机使用的信道接入类型对应的LBT时长大概率更短,如下所示:
若配置或者预定义第n个备选反馈时机使用type 1,CAPC为p竞争信道,则下一个备选反馈时机则可以配置或者预定义为使用下一个允许的更低的CAPC竞争接入信道;更低的CAPC的值可表示大概率更短的LBT时长,也可以为更高的优先级;或者,若配置或者预定义第n个备选反馈时机使用type 1,CAPC为p竞争信道,则下一个备选反馈时机则可以配置或者预定义为使用type2接入信道;或者,配置或者预定义最后一个备选反馈时机使用type 2C、2B或者2A接入信道。
本申请实施例还提供一种边链路通信方法。图4为一实施例提供的又一种 边链路通信方法的流程图,如图4所示,本实施例提供的方法包括310和320,该方法可应用在高层。
在310中,接收第二反馈信息。
在320中,根据所述第二反馈信息执行SL传输操作。
本实施例中,高层接收发送端所上报的第二反馈信息,并可根据所接收的第二反馈信息执行SL传输操作。高层根据所接收的第二反馈信息执行SL传输操作,能够提高网络通信的效率和可靠性。
在一实施例中,SL传输为使能反馈的单播传输;根据第二反馈信息执行SL传输操作,包括以下至少之一:
第二反馈信息包括ACK信息,则将SL传输对应进程中的重传缓存清空;第二反馈信息包括NACK信息,则触发SL传输对应进程进行SL传输的重传;第二反馈信息包括未接收到第一反馈信息,则触发SL传输对应进程进行SL传输的重传,或者,触发SL传输对应进程重新请求接收第一反馈信息。
在一实施例中,SL传输为使能反馈的组播传输;根据第二反馈信息执行SL传输操作,包括以下至少之一:
第二反馈信息包括ACK信息,则将SL传输对应进程中的重传缓存清空;第二反馈信息包括NACK信息,则触发SL传输对应进程进行SL传输的重传;第二反馈信息包括未接收到第一反馈信息,则将SL传输对应进程中的重传缓存清空。
本申请实施例还提供一种边链路通信方法。图5为一实施例提供的又一种边链路通信方法的流程图,如图5所示,本实施例提供的方法包括410、420和430,该方法可应用在发送端,用于一组SL传输。
在410中,发送一组SL传输,所述一组SL传输中的每个SL传输对应一个备选反馈时机集合。
在420中,在所述一组SL传输对应的备选反馈时机集合接收第一反馈信息。
在430中,根据所述第一反馈信息确定向网络设备上报的第三反馈信息。
本实施例中,首先发送端发送一组SL传输至对应接收端,其中一组SL传输中的每个SL传输可对应一个备选反馈时机集合;然后在一组SL传输对应的备选反馈时机集合接收由接收端所发送的第一反馈信息;最后,根据第一反馈信息可以确定第三反馈信息,并将所确定的第三反馈信息上报给网络设备,其中网络设备可以是基站。
本实施例中,发送端发送一组SL传输,并在备选反馈时机集合接收由对应接收端所返回的第一反馈信息,在此基础上,发送端根据所接收的第一反馈信息向高层上报第三反馈信息,能够有效避免发送端在没有获取第一反馈信息的情况下做出错误的操作,从而提高网络通信的效率和可靠性。
在一实施例中,一组SL传输包括至少一个SL传输;根据第一反馈信息确定向高层上报的第三反馈信息,包括:
根据在每个SL传输对应的备选反馈时机集合接收到的第一反馈信息确定每个SL传输对应的第二反馈信息;根据每个SL传输对应的第二反馈信息确定第三反馈信息。
确定每个SL传输对应的第二反馈信息的方法,可参见上述任意实施例。
在一实施例中,SL传输为使能反馈的单播传输;根据每个SL传输对应的第二反馈信息确定第三反馈信息,包括:
一组SL传输中的至少一个或最后一个SL传输对应的第二反馈信息为ACK信息,则将第三反馈信息设置为ACK信息,否则,将第三反馈信息设置为NACK信息;或者,将第三反馈信息设置为与一组SL传输中的最后一个SL传输对应的第二反馈信息相同。
在一实施例中,SL传输为使能反馈的第一组播类型传输;根据每个SL传输对应的第二反馈信息确定第三反馈信息,包括:
一组SL传输中的最后一个SL传输对应的第二反馈信息为ACK信息,则将第三反馈信息设置为ACK信息,否则,将第三反馈信息设置为NACK信息。
在一实施例中,SL传输为使能反馈的第二组播类型传输;根据每个SL传输对应的第二反馈信息确定第三反馈信息,包括:
一组SL传输中的至少一个或最后一个SL传输对应的第二反馈信息为ACK信息,则将第三反馈信息设置为ACK信息,否则,将第三反馈信息设置为NACK信息。
在一实施例中,SL传输为使能反馈的第三组播类型传输;根据每个SL传输对应的第二反馈信息确定第三反馈信息,包括:
一组SL传输中的最后一个SL传输对应的第二反馈信息为ACK信息,则将第三反馈信息设置为ACK信息,否则,将第三反馈信息设置为NACK信息。
以下通过不同实施例对边链路通信方法进行示例性说明。
实施例8
在一种实施例中,发送端的传输资源可以由一个网络设备(如基站)调度, 从而在调度的资源上发送一组SL传输。例如,基站调度UE-A进行一个TB的首次传输和2次重传的资源,此时UE-A在分配的传输资源上有3次传输机会或者传输资源,每次传输机会都可对应一个备选反馈时机集合,即这一组SL传输最多可包括3个备选反馈时机集合,取决于一组SL传输实际的SL传输的次数。假设UE-A进行了N次SL传输,N小于或等于3(基站分配的资源个数)。
在一种实施例中,发送一组SL传输,其中一组SL传输中的每一个SL传输都可以对应一个备选反馈时机集合,发送端在一组SL传输所对应的一组备选反馈时机集合接收第一反馈信息,并根据第一反馈信息确定向网络设备(如基站)上报的第三反馈信息。其中,每个备选反馈时机集合所包含的备选反馈时机的个数可以相同也可以不同。
在一种实施例中,若一组SL传输只包括一个SL传输时,可以使用上述本申请实施例中确定第二反馈信息的方法来确定第三反馈信息,即二者等同。
在一种实施例中,若一组SL传输包括至少一个SL传输时,可以使用上述本申请实施例中确定第二反馈信息的方法,首先确定每个SL传输对应的第二反馈信息,在此基础上可根据每个SL传输对应的第二反馈信息确定上报给基站的第三反馈信息。
在一种实施例中,若SL传输为单播传输,则根据每个SL传输对应的第二反馈信息确定第三反馈信息可以包括:若一组SL传输中的至少一个或最后一个SL传输对应的第二反馈信息为ACK信息,则可将第三反馈信息设置为ACK信息,否则可将第三反馈信息设置为NACK信息;或者,可将第三反馈信息设置为一组SL传输中的最后一个SL传输对应的第二反馈信息。
在一种实施例中,若SL传输为组播类型1(即第一组播类型传输),则根据每个SL传输对应的第二反馈信息确定第三反馈信息可以包括:若一组SL传输中的最后一个SL传输对应的第二反馈信息为ACK信息,例如第一反馈信息为无反馈,则可将第三反馈信息设置为ACK信息,否则可将第三反馈信息设置为NACK信息。
在一种实施例中,若SL传输为组播类型1x(即第三组播类型传输),则根据每个SL传输对应的第二反馈信息确定第三反馈信息可以包括:若一组SL传输中的最后一个SL传输对应的第二反馈信息为ACK信息(例如收到ACK信息且没有收到NACK信息),则可将第三反馈信息设置为ACK信息,否则可将第三反馈信息设置为NACK信息。
在一种实施例中,若所述SL传输为组播类型2(即第二组播类型传输),则根据每个SL传输对应的第二反馈信息确定第三反馈信息可以包括:若一组 SL传输中的至少一个或最后一个SL传输对应的第二反馈信息为ACK信息(如检测到组内每个成员的ACK信息反馈),则可将第三反馈信息设置为ACK信息,否则可将第三反馈信息设置为NACK信息。
本申请中,第一反馈信息可为在一个反馈时机上检测到的反馈结果,第二反馈信息可为对应于一次SL传输的一个反馈信息,第三反馈信息可为对应于一组SL传输的一个反馈信息。
本申请实施例还提供一种边链路通信装置。图6为一实施例提供的一种边链路通信装置的结构示意图。如图6所示,所述边链路通信装置包括:
第一发送模块510,设置为发送SL传输,所述SL传输对应一个备选反馈时机集合;第一接收模块520,设置为在所述备选反馈时机集合接收第一反馈信息;第一上报模块530,设置为根据所述第一反馈信息向高层上报第二反馈信息。
本实施例中,发送端通过在备选反馈时机集合接收由对应接收端所返回的第一反馈信息,在此基础上,发送端根据所接收的第一反馈信息向高层上报第二反馈信息,能够有效避免发送端在没有获取第一反馈信息的情况下做出错误的操作,从而提高网络通信的效率和可靠性。
在一实施例中,SL传输为使能反馈的单播传输,第一反馈信息包括NACK信息或ACK信息。
在一实施例中,在备选反馈时机集合中的任意一个或至少一个备选反馈时机接收到第一反馈信息,则将第二反馈信息设置为与接收到的第一反馈信息相同。
在一实施例中,在备选反馈时机集合未接收到第一反馈信息,则将第二反馈信息设置为NACK信息,或者,将第二反馈信息设置为未接收到第一反馈信息。
在一实施例中,SL传输为使能反馈的第一组播类型传输,第一反馈信息包括NACK信息。
在一实施例中,在备选反馈时机集合中的任意一个或至少一个备选反馈时机接收到第一反馈信息,则将第二反馈信息设置为NACK信息。
在一实施例中,在备选反馈时机集合未接收到第一反馈信息,则将第二反馈信息设置为ACK信息,或者,将第二反馈信息设置为未接收到第一反馈信息。
在一实施例中,SL传输携带的传输块为首次传输,或者SL传输携带的传输块为第n次传输,n小于或等于N,则将第二反馈信息设置为NACK信息, 其中,N为正整数
在一实施例中,SL传输为使能反馈的第二组播类型传输,每个成员的第一反馈信息包括NACK信息或ACK信息。
在一实施例中,在至少一个备选反馈时机接收到一个成员UE的第一反馈信息为ACK信息,则确定该成员UE的第一反馈信息为ACK信息,否则,确定该成员UE的第一反馈信息为NACK信息。
在一实施例中,至少一个反馈时机属于SL传输对应的备选反馈时机集合;或者,至少一个反馈时机属于SL传输所在的一组SL传输对应的备选反馈时机集合。
在一实施例中,接收到成员组中每个成员的第一反馈信息为ACK信息,则将第二反馈信息设置为ACK信息,否则,将第二反馈信息设置为NACK信息。
在一实施例中,SL传输为使能反馈的第三组播类型传输,每个成员的第一反馈信息包括NACK信息或ACK信息。
在一实施例中,在备选反馈时机集合中的任意一个或至少一个备选反馈时机接收到第一反馈信息且第一反馈信息包括NACK信息,则将第二反馈信息设置为NACK信息。
在一实施例中,在备选反馈时机集合接收到的第一反馈信息只包含ACK信息,则将第二反馈信息设置为ACK信息,否则,将第二反馈信息设置为NACK信息。
在一实施例中,在备选反馈时机集合未接收到第一反馈信息,则将第二反馈信息设置为NACK信息,或者将第二反馈信息设置为未接收到第一反馈信息。
在一实施例中,SL传输属于一组SL传输;一组SL传输的数据块相同,或者,一组SL传输属于一个SL进程,或者,一组SL传输包括网络或者高层指示的至少一个SL传输或者至少一个授权资源对应的传输。
本实施例提出的边链路通信装置与上述实施例提出的边链路通信方法属于同一构思,未在本实施例中详尽描述的技术细节可参见上述任意实施例,并且本实施例具备与执行边链路通信方法相同的效果。
本申请实施例还提供一种边链路通信装置。图7为一实施例提供的一种边链路通信装置的结构示意图。如图7所示,所述边链路通信装置包括:
SL传输接收模块610,接收SL传输,所述SL传输对应一个备选反馈时机集合。
确定模块620,设置为确定第一反馈信息。
判决执行模块630,设置为在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,并在判决为成功的备选反馈时机中的至少一个备选反馈时机发送所述第一反馈信息。
本实施例的边链路通信装置,接收端接收SL传输,并确定SL传输对应的第一反馈信息,在此基础上,又通过执行判决过程,以在确定为判决成功的至少一个备选反馈时机上发送第一反馈信息至对应发送端,该方法能够将第一反馈信息发送至发送端,从而有效避免发送端在没有获取第一反馈信息的情况下做出错误的操作,提高了网络通信的效率和可靠性。
在一实施例中,判决执行模块630,设置为:依次在备选反馈时机集合中的每个备选反馈时机之前执行判决过程,直至在判决为成功的备选反馈时机发送第一反馈信息,或者,直至各备选反馈时机的判决完成。
在一实施例中,判决过程包括信道接入过程;各备选反馈时机分别对应于各自的信道接入类型。
在一实施例中,在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,包括以下之一:
在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前继续执行已运行的第一类型的信道接入过程;在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前执行新的第一类型的信道接入过程,新的第一类型的信道接入过程与已运行的第一类型的信道接入过程使用相同的CAPC;在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前执行新的第一类型的信道接入过程,新的第一类型的信道接入过程使用的CAPC高于已运行的第一类型的信道接入过程使用的CAPC;在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前执行新的第一类型的信道接入过程,新的第一类型的信道接入过程使用的CAPC低于已运行的第一类型的信道接入过程使用的CAPC;在一个备选反馈时机之前执行第一类型的信道接入过程,在下一个备选反馈时机之前执行第二类型的信道接入过程。
在一实施例中,在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,包括:在一个备选反馈时机之前执行的信道接入过程失败,则改变信道接入类型并在下一个备选反馈时机之前使用改变后的信道接入类型执行信道接入过程。
在一实施例中,配置或者预定义每个备选反馈时机的信道接入类型;配置 或者预定义每个备选反馈时机的信道接入类型包括以下至少之一:
配置或者预定义一个备选反馈时机的信道接入类型为类型1,并配置或者预定义类型1对应的CAPC;配置或者预定义一个备选反馈时机的信道接入类型为类型2A;配置或者预定义一个备选反馈时机的信道接入类型为类型2B;配置或者预定义一个备选反馈时机的信道接入类型为类型2C。
本实施例提出的边链路通信装置与上述实施例提出的边链路通信方法属于同一构思,未在本实施例中详尽描述的技术细节可参见上述任意实施例,并且本实施例具备与执行边链路通信方法相同的效果。
本申请实施例还提供一种边链路通信装置。图8为一实施例提供的一种边链路通信装置的结构示意图。如图8所示,所述边链路通信装置包括:
第二接收模块710,设置为接收第二反馈信息;执行模块720,设置为根据所述第二反馈信息执行SL传输操作。
本实施例中的边链路通信装置,高层接收发送端所上报的第二反馈信息,并可根据所接收的第二反馈信息执行SL传输操作。高层根据所接收的第二反馈信息执行SL传输操作,能够提高网络通信的效率和可靠性。
在一实施例中,SL传输为使能反馈的单播传输;根据第二反馈信息执行SL传输操作,包括以下至少之一:
第二反馈信息包括ACK信息,则将SL传输对应进程中的重传缓存清空;第二反馈信息包括NACK信息,则触发SL传输对应进程进行SL传输的重传;第二反馈信息包括未接收到第一反馈信息,则触发SL传输对应进程进行SL传输的重传,或者,触发SL传输对应进程重新请求接收第一反馈信息。
在一实施例中,SL传输为使能反馈的组播传输;根据第二反馈信息执行SL传输操作,包括以下至少之一:
第二反馈信息包括ACK信息,则将SL传输对应进程中的重传缓存清空;第二反馈信息包括NACK信息,则触发SL传输对应进程进行SL传输的重传;第二反馈信息包括未接收到第一反馈信息,则将SL传输对应进程中的重传缓存清空。
本申请实施例还提供一种边链路通信装置。图9为一实施例提供的一种边链路通信装置的结构示意图。如图9所示,所述边链路通信装置包括:
第二发送模块810,设置为发送一组SL传输,所述一组SL传输中的每个 SL传输对应一个备选反馈时机集合。
第三接收模块820,设置为在所述一组SL传输对应的备选反馈时机集合接收第一反馈信息。
第二上报模块830,根据所述第一反馈信息确定向网络设备上报的第三反馈信息。
本实施例中的边链路通信装置,发送端发送一组SL传输,并在备选反馈时机集合接收由对应接收端所返回的第一反馈信息,在此基础上,发送端根据所接收的第一反馈信息向高层上报第三反馈信息,能够有效避免发送端在没有获取第一反馈信息的情况下做出错误的操作,从而提高网络通信的效率和可靠性。
在一实施例中,一组SL传输包括至少一个SL传输;第二上报模块830,包括:
第一确定单元,设置为根据在每个SL传输对应的备选反馈时机集合接收到的第一反馈信息确定每个SL传输对应的第二反馈信息;第二确定单元,设置为根据每个SL传输对应的第二反馈信息确定第三反馈信息。
在一实施例中,SL传输为使能反馈的单播传输;第二确定单元,设置为:
一组SL传输中的至少一个或最后一个SL传输对应的第二反馈信息为ACK信息,则将第三反馈信息设置为ACK信息,否则,将第三反馈信息设置为NACK信息;或者,
将第三反馈信息设置为与一组SL传输中的最后一个SL传输对应的第二反馈信息相同。
在一实施例中,SL传输为使能反馈的第一组播类型传输;第二确定单元,设置为:
一组SL传输中的最后一个SL传输对应的第二反馈信息为ACK信息,则将第三反馈信息设置为ACK信息,否则,将第三反馈信息设置为NACK信息。
在一实施例中,SL传输为使能反馈的第二组播类型传输;第二确定单元,设置为:
一组SL传输中的至少一个或最后一个SL传输对应的第二反馈信息为ACK信息,则将第三反馈信息设置为ACK信息,否则,将第三反馈信息设置为NACK信息。
在一实施例中,SL传输为使能反馈的第三组播类型传输;第二确定单元,设置为:
一组SL传输中的最后一个SL传输对应的第二反馈信息为ACK信息,则 将第三反馈信息设置为ACK信息,否则,将第三反馈信息设置为NACK信息。
本申请实施例还提供了一种通信节点,图10为一实施例提供的一种通信节点的硬件结构示意图,如图10所示,本申请提供的通信节点,包括存储器920、处理器910以及存储在存储器上并可在处理器上运行的计算机程序,处理器910执行所述程序时实现上述的边链路通信方法。
通信节点还可以包括存储器920;该通信节点中的处理器910可以是一个或多个,图10中以一个处理器910为例;存储器920用于存储一个或多个程序;所述一个或多个程序被所述一个或多个处理器910执行,使得所述一个或多个处理器910实现如本申请实施例中所述的边链路通信方法。
通信节点还包括:通信装置930、输入装置940和输出装置950。
通信节点中的处理器910、存储器920、通信装置930、输入装置940和输出装置950可以通过总线或其他方式连接,图10中以通过总线连接为例。
输入装置940可用于接收输入的数字或字符信息,以及产生与通信节点的用户设置以及功能控制有关的按键信号输入。输出装置950可包括显示屏等显示设备。
通信装置930可以包括接收器和发送器。通信装置930设置为根据处理器910的控制进行信息收发通信。
存储器920作为一种计算机可读存储介质,可设置为存储软件程序、计算机可执行程序以及模块,如本申请实施例所述边链路通信方法对应的程序指令/模块(例如,边链路通信装置中的第一发送模块510、第一接收模块520和第一上报模块530);或者,如本申请实施例所述边链路通信方法对应的程序指令/模块(例如,边链路通信装置中的SL传输接收模块610、确定模块620和判决执行模块630);或者,如本申请实施例所述边链路通信方法对应的程序指令/模块(例如,边链路通信装置中的第二接收模块710和执行模块720);或者,如本申请实施例所述边链路通信方法对应的程序指令/模块(例如,边链路通信装置中的第二发送模块810、第三接收模块820和第二上报模块830)。存储器920可包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序;存储数据区可存储根据通信节点的使用所创建的数据等。此外,存储器920可以包括高速随机存取存储器,还可以包括非易失性存储器,例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中,存储器920可包括相对于处理器910远程设置的存储器,这些远程存储器可以通过网络连接至通信节点。上述网络的实例包括但不限于 互联网、企业内部网、局域网、移动通信网及其组合。
本申请实施例还提供一种计算机可读存储介质,所述存储介质存储有计算机程序,所述计算机程序被处理器执行时实现本申请实施例中任一所述的边链路通信方法。可选的,该边链路通信方法,包括:发送SL传输,所述SL传输对应一个备选反馈时机集合;在所述备选反馈时机集合接收第一反馈信息;根据所述第一反馈信息向高层上报第二反馈信息。可选的,该边链路通信方法,包括:接收SL传输,所述SL传输对应一个备选反馈时机集合;确定第一反馈信息;在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,并在判决为成功的备选反馈时机中的至少一个备选反馈时机发送所述第一反馈信息。可选的,该边链路通信方法,包括:接收第二反馈信息;根据所述第二反馈信息执行SL传输操作。可选的,该边链路通信方法,包括:发送一组SL传输,所述一组SL传输中的每个SL传输对应一个备选反馈时机集合;在所述一组SL传输对应的备选反馈时机集合接收第一反馈信息;根据所述第一反馈信息确定向网络设备上报的第三反馈信息。
本申请实施例的计算机存储介质,可以采用一个或多个计算机可读的介质的任意组合。计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质。计算机可读存储介质例如可以是,但不限于:电、磁、光、电磁、红外线、或半导体的系统、装置或器件,或者任意以上的组合。计算机可读存储介质的例子(非穷举的列表)包括:具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机存取存储器(Random Access Memory,RAM)、只读存储器(Read Only Memory,ROM)、可擦式可编程只读存储器(Erasable Programmable Read Only Memory,EPROM)、闪存、光纤、便携式CD-ROM、光存储器件、磁存储器件、或者上述的任意合适的组合。计算机可读存储介质可以是任何包含或存储程序的有形介质,该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。
计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信号,其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式,包括但不限于:电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质,该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。
计算机可读介质上包含的程序代码可以用任何适当的介质传输,包括但不限于:无线、电线、光缆、无线电频率(Radio Frequency,RF)等等,或者上述的任意合适的组合。
可以以一种或多种程序设计语言或其组合来编写用于执行本申请操作的计算机程序代码,所述程序设计语言包括面向对象的程序设计语言,诸如Java、Smalltalk、C++,还包括常规的过程式程序设计语言,诸如“C”语言或类似的程序设计语言。程序代码可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中,远程计算机可以通过任意种类的网络,包括局域网(LAN)或广域网(WAN),连接到用户计算机,或者,可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连接)。
以上所述,仅为本申请的示例性实施例而已,并非用于限定本申请的保护范围。
本领域内的技术人员应明白,术语用户终端涵盖任何适合类型的无线用户设备,例如移动电话、便携数据处理装置、便携网络浏览器或车载移动台。
一般来说,本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其任何组合中实现。例如,一些方面可以被实现在硬件中,而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中,尽管本申请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现,例如在处理器实体中,或者通过硬件,或者通过软件和硬件的组合。计算机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture,ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤,或者可以表示相互连接的逻辑电路、模块和功能,或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现,例如但不限于只读存储器(Read-Only Memory,ROM)、随机访问存储器(Random Access Memory,RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc,DVD)或光盘(Compact Disk,CD)等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型,例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processing,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、可编程逻辑器件(Field-Programmable Gate Array,FPGA)以及基于多核处理器架构的处理器。

Claims (34)

  1. 一种边链路通信方法,包括:
    发送边链路SL传输,所述SL传输对应一个备选反馈时机集合;
    在所述备选反馈时机集合接收第一反馈信息;
    根据所述第一反馈信息向高层上报第二反馈信息。
  2. 根据权利要求1所述的方法,其中,所述SL传输为使能反馈的单播传输,所述第一反馈信息包括非确认NACK信息或确认ACK信息。
  3. 根据权利要求2所述的方法,还包括:
    在所述备选反馈时机集合中的一个或至少一个备选反馈时机接收到所述第一反馈信息的情况下,将所述第二反馈信息设置为与接收到的所述第一反馈信息相同。
  4. 根据权利要求2所述的方法,还包括:
    在所述备选反馈时机集合未接收到所述第一反馈信息的情况下,将所述第二反馈信息设置为NACK信息,或者,将所述第二反馈信息设置为未接收到所述第一反馈信息。
  5. 根据权利要求1所述的方法,其中,所述SL传输为使能反馈的第一组播类型传输,所述第一反馈信息包括NACK信息。
  6. 根据权利要求5所述的方法,还包括:
    在所述备选反馈时机集合中的一个或至少一个备选反馈时机接收到所述第一反馈信息的情况下,将所述第二反馈信息设置为NACK信息。
  7. 根据权利要求5所述的方法,还包括:
    在所述备选反馈时机集合未接收到所述第一反馈信息的情况下,将所述第二反馈信息设置为ACK信息,或者,将所述第二反馈信息设置为未接收到所述第一反馈信息。
  8. 根据权利要求5所述的方法,还包括:
    在所述SL传输携带的传输块为首次传输,或者所述SL传输携带的传输块为第n次传输,n小于或等于N的情况下,将所述第二反馈信息设置为NACK信息,其中,N为正整数。
  9. 根据权利要求1所述的方法,其中,所述SL传输为使能反馈的第二组播类型传输,每个成员的第一反馈信息包括NACK信息或ACK信息。
  10. 根据权利要求9所述的方法,还包括:
    在至少一个备选反馈时机接收到一个成员用户设备UE的第一反馈信息为ACK信息的情况下,确定所述成员UE的第一反馈信息为ACK信息,在不存在备选反馈时机接收到成员UE的第一反馈信息为ACK信息的情况下,确定所述成员UE的第一反馈信息为NACK信息。
  11. 根据权利要求10所述的方法,其中,所述至少一个反馈时机属于所述SL传输对应的所述备选反馈时机集合;或者,所述至少一个反馈时机属于所述SL传输所在的一组SL传输对应的备选反馈时机集合。
  12. 根据权利要求9所述的方法,还包括:
    在接收到成员组中每个成员的第一反馈信息为ACK信息的情况下,将所述第二反馈信息设置为ACK信息,在未接收到成员组中每个成员的第一反馈信息为ACK信息的情况下,将所述第二反馈信息设置为NACK信息。
  13. 根据权利要求1所述的方法,其中,所述SL传输为使能反馈的第三组播类型传输,每个成员的第一反馈信息包括NACK信息或ACK信息。
  14. 根据权利要求13所述的方法,还包括:
    在所述备选反馈时机集合中的一个或至少一个备选反馈时机接收到所述第一反馈信息且所述第一反馈信息包括NACK信息的情况下,将所述第二反馈信息设置为NACK信息。
  15. 根据权利要求13所述的方法,还包括:
    在所述备选反馈时机集合接收到的第一反馈信息只包含ACK信息的情况下,将所述第二反馈信息设置为ACK信息,在所述备选反馈时机集合接收到的第一反馈信息不只包含ACK信息的情况下,将所述第二反馈信息设置为NACK信息。
  16. 根据权利要求13所述的方法,还包括:
    在所述备选反馈时机集合未接收到所述第一反馈信息的情况下,将所述第二反馈信息设置为NACK信息,或者将所述第二反馈信息设置为未接收到所述第一反馈信息。
  17. 根据权利要求1所述的方法,其中,所述SL传输属于一组SL传输;
    所述一组SL传输的数据块相同,或者,所述一组SL传输属于一个SL进程,或者,所述一组SL传输包括网络或者高层指示的至少一个SL传输或者至少一个授权资源对应的传输。
  18. 一种边链路通信方法,包括:
    接收边链路SL传输,所述SL传输对应一个备选反馈时机集合;
    确定第一反馈信息;
    在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,并在判决为成功的备选反馈时机中的至少一个备选反馈时机发送所述第一反馈信息。
  19. 根据权利要求18所述的方法,其中,在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,并在判决为成功的备选反馈时机中的至少一个备选反馈时机发送所述第一反馈信息,包括:
    依次在所述备选反馈时机集合中的每个备选反馈时机之前执行判决过程,直至在判决为成功的备选反馈时机发送所述第一反馈信息,或者,直至所述至少一个备选反馈时机的判决完成。
  20. 根据权利要求18所述的方法,其中,所述判决过程包括信道接入过程;
    所述至少一个备选反馈时机分别对应于各自的信道接入类型。
  21. 根据权利要求20所述的方法,其中,在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,包括以下之一:
    在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前继续执行已运行的所述第一类型的信道接入过程;
    在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前执行新的第一类型的信道接入过程,所述新的第一类型的信道接入过程与已运行的第一类型的信道接入过程使用相同的信道接入优先级CAPC;
    在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前执行新的第一类型的信道接入过程,所述新的第一类型的信道接入过程使用的CAPC高于已运行的第一类型的信道接入过程使用的CAPC;
    在一个备选反馈时机之前运行第一类型的信道接入过程,在下一个备选反馈时机之前执行新的第一类型的信道接入过程,所述新的第一类型的信道接入过程使用的CAPC低于已运行的第一类型的信道接入过程使用的CAPC;
    在一个备选反馈时机之前执行第一类型的信道接入过程,在下一个备选反馈时机之前执行第二类型的信道接入过程。
  22. 根据权利要求20所述的方法,其中,在所述备选反馈时机集合中的至少一个备选反馈时机之前执行判决过程,包括:
    在一个备选反馈时机之前执行的信道接入过程失败的情况下,改变信道接 入类型并在下一个备选反馈时机之前使用改变后的信道接入类型执行信道接入过程。
  23. 根据权利要求18所述的方法,还包括:配置或者预定义每个备选反馈时机的信道接入类型;
    配置或者预定义每个备选反馈时机的信道接入类型包括以下至少之一:
    配置或者预定义一个备选反馈时机的信道接入类型为类型1,并配置或者预定义所述类型1对应的CAPC;
    配置或者预定义一个备选反馈时机的信道接入类型为类型2A;
    配置或者预定义一个备选反馈时机的信道接入类型为类型2B;
    配置或者预定义一个备选反馈时机的信道接入类型为类型2C。
  24. 一种边链路通信方法,包括:
    接收第二反馈信息;
    根据所述第二反馈信息执行边链路SL传输操作。
  25. 根据权利要求24所述的方法,其中,所述SL传输为使能反馈的单播传输;
    根据所述第二反馈信息执行SL传输操作,包括以下至少之一:
    在所述第二反馈信息包括ACK信息的情况下,将所述SL传输对应进程中的重传缓存清空;
    在所述第二反馈信息包括NACK信息的情况下,触发所述SL传输对应进程进行SL传输的重传;
    在所述第二反馈信息包括未接收到第一反馈信息的情况下,触发所述SL传输对应进程进行SL传输的重传,或者,触发所述SL传输对应进程重新请求接收第一反馈信息。
  26. 根据权利要求24所述的方法,其中,所述SL传输为使能反馈的组播传输;
    根据所述第二反馈信息执行SL传输操作,包括以下至少之一:
    在所述第二反馈信息包括ACK信息的情况下,将所述SL传输对应进程中的重传缓存清空;
    在所述第二反馈信息包括NACK信息的情况下,触发所述SL传输对应进程进行SL传输的重传;
    在所述第二反馈信息包括未接收到第一反馈信息的情况下,将所述SL传输对应进程中的重传缓存清空。
  27. 一种边链路通信方法,包括:
    发送一组边链路SL传输,所述一组SL传输中的每个SL传输对应一个备选反馈时机集合;
    在所述一组SL传输对应的备选反馈时机集合接收第一反馈信息;
    根据所述第一反馈信息确定向网络设备上报的第三反馈信息。
  28. 根据权利要求27所述的方法,其中,所述一组SL传输包括至少一个SL传输;
    所述根据所述第一反馈信息确定向网络设备上报的第三反馈信息,包括:
    根据在每个SL传输对应的备选反馈时机集合接收到的第一反馈信息确定每个SL传输对应的第二反馈信息;
    根据每个SL传输对应的第二反馈信息确定所述第三反馈信息。
  29. 根据权利要求28所述的方法,其中,所述SL传输为使能反馈的单播传输;
    所述根据每个SL传输对应的第二反馈信息确定所述第三反馈信息,包括:
    在所述一组SL传输中的至少一个或最后一个SL传输对应的第二反馈信息为ACK信息的情况下,将所述第三反馈信息设置为ACK信息,在所述一组SL传输中的至少一个且最后一个SL传输对应的第二反馈信息不为ACK信息的情况下,将所述第三反馈信息设置为NACK信息;或者,
    将所述第三反馈信息设置为与所述一组SL传输中的最后一个SL传输对应的第二反馈信息相同。
  30. 根据权利要求28所述的方法,其中,所述SL传输为使能反馈的第一组播类型传输;
    所述根据每个SL传输对应的第二反馈信息确定所述第三反馈信息,包括:
    在所述一组SL传输中的最后一个SL传输对应的第二反馈信息为ACK信息的情况下,将所述第三反馈信息设置为ACK信息,在所述一组SL传输中的最后一个SL传输对应的第二反馈信息不为ACK信息的情况下,将所述第三反馈信息设置为NACK信息。
  31. 根据权利要求28所述的方法,其中,所述SL传输为使能反馈的第二组播类型传输;
    所述根据每个SL传输对应的第二反馈信息确定所述第三反馈信息,包括:
    在所述一组SL传输中的至少一个或最后一个SL传输对应的第二反馈信息为ACK信息的情况下,将所述第三反馈信息设置为ACK信息,在所述一组SL传输中的至少一个且最后一个SL传输对应的第二反馈信息不为ACK信息的情况下,将所述第三反馈信息设置为NACK信息。
  32. 根据权利要求28所述的方法,其中,所述SL传输为使能反馈的第三组播类型传输;
    所述根据每个SL传输对应的第二反馈信息确定所述第三反馈信息,包括:
    在所述一组SL传输中的最后一个SL传输对应的第二反馈信息为ACK信息的情况下,将所述第三反馈信息设置为ACK信息,在所述一组SL传输中的最后一个SL传输对应的第二反馈信息不为ACK信息的情况下,将所述第三反馈信息设置为NACK信息。
  33. 一种通信节点,包括存储器、处理器以及存储在所述存储器上并可在所述处理器上运行的计算机程序,其中,所述处理器执行所述程序时实现如权利要求1-32中任一项所述的边链路通信方法。
  34. 一种计算机可读存储介质,存储有计算机程序,其中,所述程序被处理器执行时实现如权利要求1-32中任一所述的边链路通信方法。
PCT/CN2022/134578 2021-12-16 2022-11-28 边链路通信方法、通信节点及存储介质 WO2023109485A1 (zh)

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