WO2023066411A1 - 资源指示方法、节点和存储介质 - Google Patents

资源指示方法、节点和存储介质 Download PDF

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Publication number
WO2023066411A1
WO2023066411A1 PCT/CN2022/133897 CN2022133897W WO2023066411A1 WO 2023066411 A1 WO2023066411 A1 WO 2023066411A1 CN 2022133897 W CN2022133897 W CN 2022133897W WO 2023066411 A1 WO2023066411 A1 WO 2023066411A1
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Prior art keywords
transmission opportunity
resource
communication node
sequence number
sci
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PCT/CN2022/133897
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English (en)
French (fr)
Inventor
卢有雄
邢卫民
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中兴通讯股份有限公司
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Priority to AU2022371755A priority Critical patent/AU2022371755A1/en
Publication of WO2023066411A1 publication Critical patent/WO2023066411A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present application relates to the technical field of wireless communication, for example, to a resource indication method, a node and a storage medium.
  • resource allocation In vehicle wireless communication technology (Vehicle to X, V2X) communication, unilateral communication (Sidelink), user equipment (User Equipment, UE) and UE direct communication (Device-to-Device, D2D), resource allocation has mode one There are two modes, mode 2 and mode 1. Mode 1 allocates resources in the base station scheduling mode, and mode 2 selects resources independently for the UE. For mode 1, through scheduling by a central node, such as a base station, resources between UEs can be free from conflicts. For mode 2, since there is no scheduling by the central node, UEs need to share resources according to certain rules and avoid resource conflicts as much as possible.
  • the above mode two The UE may receive sidelink control information (Sidelink Control Information, SCI) sent by other UEs to learn its own resource usage information in the next period, and avoid resources that have been reserved by other UEs when performing resource selection, so as to achieve multiple Resource multiplexing among UEs.
  • SCI Sidelink Control Information
  • NR V2X For a transmission opportunity obtained through competition, such as on an unlicensed carrier, how to realize the communication between multiple UEs within a channel occupancy time (Channel Occupancy Time, COT) obtained through Listen Before Talk (LBT)
  • COT Channel Occupancy Time
  • LBT Listen Before Talk
  • UE For mode 2 resource selection mode, UE needs to obtain an available resource or a group of resources through sensing when sharing a resource pool or carrier or bandwidth part (BWP) or channel (channel).
  • BWP bandwidth part
  • channel channel
  • PSCCH Physical Sidelink Control Channel
  • the main purpose of the embodiment of the present application is to provide a resource indication method, node and storage medium, which can enable a communication node to determine the availability of a transmission opportunity based on received resource usage information, and avoid resource conflicts with other communication nodes.
  • An embodiment of the present application provides a resource indication method, which includes:
  • the first communication node receives resource usage information
  • the resource usage information includes resource location information of at least one transmission opportunity and a resource usage sequence number RAO of the transmission opportunity, or a set of resources to be used;
  • the first communication node determines the availability of transmission opportunities based on the resource usage information.
  • An embodiment of the present application provides a resource indication method, which includes:
  • the second communication node uses the acquired at least one resource as a transmission opportunity
  • the second communication node listens to the side link control information SCI sent by other communication nodes;
  • the second communication node determines the availability of transmission opportunities based on the SCI.
  • An embodiment of the present application provides a resource indication method, which includes:
  • the third communication node sends resource usage information to the first communication node
  • the resource usage information includes at least one transmission opportunity and a resource usage sequence number RAO, and the resource usage information is used to instruct the first communication node to determine the availability of the transmission opportunity.
  • An embodiment of the present application provides a resource indication device, which includes:
  • a communication module configured to receive resource usage information
  • the resource usage information includes resource location information of at least one transmission opportunity and a resource usage sequence number RAO of the transmission opportunity, or a set of resources to be used;
  • a determination module is configured to determine the availability of the transmission opportunity according to the resource usage information.
  • An embodiment of the present application provides a resource indication device, which includes:
  • a determining module configured to use the acquired at least one resource as a transmission opportunity
  • the listening module is used to listen to the side link control information SCI sent by other communication nodes;
  • a determining module configured to determine the availability of transmission opportunities according to the SCI.
  • An embodiment of the present application provides a resource indication device, which includes:
  • a communication module configured to send resource usage information to the first communication node
  • the resource usage information includes at least one transmission opportunity and a resource usage sequence number RAO, and the resource usage information is used to instruct the first communication node to determine the availability of the transmission opportunity.
  • An embodiment of the present application provides a communication node, including: a processor, and when the processor executes a computer program, implements the resource indication method provided in any embodiment of the present application.
  • An embodiment of the present application provides a readable and writable storage medium, including: a computer program is stored in the readable and writable storage medium, and when the computer program is executed by a processor, the resource indication method provided in any embodiment of the present application is implemented.
  • An embodiment of the present application provides a resource indication method, a node, and a storage medium.
  • the method includes: a first communication node receives resource usage information; wherein, the resource usage information includes resource location information of at least one transmission opportunity and resource usage of the transmission opportunity The serial number RAO, or the set of resources to be used; the first communication node determines the availability of the transmission opportunity according to the resource usage information. Based on the above solution, resource conflicts between the communication node and other communication nodes can be avoided.
  • FIG. 1 is a flowchart of a resource indication method provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of judging the availability of transmission opportunities based on monitoring results when the transmission opportunities are 3 provided by the embodiment of the present application;
  • FIG. 3 is a schematic diagram of judging the availability of transmission opportunities when the transmission opportunities are 4 provided by the embodiment of the present application;
  • Fig. 4 is a schematic diagram of judging the availability of transmission opportunities when another transmission opportunity provided by the embodiment of the present application is 4;
  • Fig. 5 is a schematic diagram of a first communication node sending a notification signal before a transmission opportunity provided by an embodiment of the present application
  • FIG. 6 is a schematic diagram of another communication node judging the availability of a transmission opportunity based on a monitored notification signal provided by an embodiment of the present application;
  • FIG. 7 is a schematic diagram of sending SCI based on three resources by a first communication node provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a second communication node monitoring SCI based on three resources provided by an embodiment of the present application.
  • FIG. 9 is a flow chart of another resource indication method provided by an embodiment of the present application.
  • Fig. 10 is a flowchart of another resource indication method provided by the embodiment of the present application.
  • Fig. 11 is a schematic structural diagram of a resource indication device provided by an embodiment of the present application.
  • Fig. 12 is a schematic structural diagram of another resource indication device provided by an embodiment of the present application.
  • Fig. 13 is a schematic structural diagram of another resource indication device provided by the embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of a communication node provided by an embodiment of the present application.
  • words such as “optionally” or “exemplarily” are used as examples, illustrations or illustrations. Any embodiment or design solution described as “optional” or “exemplary” in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design solutions. Rather, the use of words such as “optionally” or “exemplarily” is intended to present related concepts in a concrete manner.
  • Fig. 1 is a flow chart of a resource indication method provided by an embodiment of the present application, which can be executed by the first communication node, and determines the availability of transmission opportunities based on the resource usage information received by the first communication node, avoiding conflicts with other communication nodes Conflicts between usage resources.
  • the method may include:
  • the first communications node receives resource usage information.
  • the first communication node may be a user equipment (User Equipment, UE), a handheld terminal, etc.
  • the resource usage information received by the first communication node may include resource location information of at least one transmission opportunity and the transmission opportunity
  • the resource usage sequence number (Resource Assignment Order, RAO), or the resource usage information may include a set of resources to be used.
  • the first communication node determines the availability of the transmission opportunity according to the resource usage information.
  • the first communication node determines the availability of the transmission opportunity according to the received resource usage information, and can specify its own available transmission opportunity or unavailable transmission opportunity, thereby avoiding conflicts with resources used by other communication nodes.
  • the implementation of the above S102 may include: the first communication node selects the RAO corresponding to the RAO from the at least one transmission opportunity transfer opportunity and determine the availability of the selected transfer opportunity as available or unavailable.
  • the above-mentioned RAO may include at least one of the following:
  • the sequence numbers of all transmission opportunities are the same, and all transmission opportunities are indicated based on a sequence number value; the initial transmission opportunity set and each retransmission transmission opportunity set correspond to their respective sequence number values; different transmission opportunities correspond to their respective sequence number values; multiple transmission opportunities
  • the serial number values of the opportunities are arranged in positive order according to the time sequence, where the initial value of the serial number value is 0 or the indicated value X, and X is an integer greater than or equal to 0; the serial number values of multiple transmission opportunities are arranged in reverse order according to the time sequence, where , the initial value of the serial number is N or the indicated value Y, where N and Y are integers greater than 0; the smaller the RAO serial number, the higher the priority.
  • the above-mentioned RAO includes one of the following:
  • serial number value When the serial number value is less than 2, if the serial number value is 0, it means that the serial number value indicates that the current transmission opportunity meets the channel usage conditions and can be used; if the serial number value is 1, it means that the serial number value indicates that the current transmission opportunity can use at least the first A communication node detects that other communication nodes release the resources corresponding to the current transmission opportunity; when the sequence number value is greater than 1, if the sequence number value is 0, it means that the sequence number value indicates that the current transmission opportunity meets the channel usage conditions and can be used.
  • sequence number value is k, indicating that the sequence number value indicates that the condition that the current transmission opportunity can be used at least includes that the first communication node detects that other communication nodes corresponding to the sequence number value k-1 release the resources corresponding to the current transmission opportunity, where k is an integer greater than 0 .
  • the implementation of S102 may include: the first communication node monitors a channel to obtain a monitoring result, and determines the availability of transmission opportunities in the resource set to be used according to the monitoring result.
  • the monitoring of the channel by the first communication node may include the following three situations:
  • the first communication node succeeds in Listen before Talk (LBT) before a selected transmission opportunity, that is, the result of listening to the channel is idle.
  • LBT Listen before Talk
  • the first communication node Before a selected transmission opportunity, the first communication node sends, and the current transmission opportunity is within the remaining COT duration.
  • the first communication node monitors the COT information shared by other communication nodes, and the COT use condition is met.
  • the first communication node determines the availability of transmission opportunities in the resource set to be used according to the monitoring result, which may include at least one of the following:
  • the first communication node determines that the transmission opportunity is available; when the monitoring result does not meet the first condition, the first communication node determines that the transmission opportunity is not available.
  • the above-mentioned first condition may be a channel monitoring condition.
  • the first condition may include: before any determined transmission opportunity, the first communication node LBT succeeds, that is, the result of monitoring the channel is empty, then any transmission opportunity is Available transfer opportunities.
  • the first communication node obtains 3 transmission opportunities, before the first transmission opportunity, the first communication node performs Type 1 channel monitoring. If the monitoring channel space, that is, LBT is successful, the first communication node The first transmission opportunity is available, and the first communication node sends the communication signal or channel on the resource corresponding to the first transmission opportunity. If the listening channel is busy, that is, the LBT is unsuccessful, the resource corresponding to the first transmission opportunity becomes invalid, and the first communication node does not send a communication signal or channel.
  • the first communication node transmits data before any transmission opportunity determined, if the transmission opportunity for transmitting data is within the remaining channel occupancy time (Channel Occupancy Time, COT), and any transmission opportunity determined is consistent with the transmission of the transmission data If the time interval between opportunities is less than the threshold value, any transmission opportunity is an available transmission opportunity. As shown in FIG. 3 , it is assumed that there are four transmission opportunities selected by the first communication node for communication. Before the first selected transmission opportunity, the first communication node sends other data. If the selected transmission opportunity is within the same remaining COT duration as the previous transmission, and the interval between the previous transmission and the previous transmission is less than the time interval threshold, then the first selected transmission opportunity is available, and the first communication node can correspond to the current transmission opportunity Send communication data on resources.
  • COT Channel Occupancy Time
  • the first communication node monitors the COT information sent by other communication nodes, and if the COT information meets the usage conditions, any of the determined transmission opportunities is adjacent to the transmission time slot in which the COT information is monitored, And if the time interval is smaller than the threshold value, then any transmission opportunity is an available transmission opportunity.
  • the first communication node listens to the transmission control messages sent by other communication nodes and data, and the measured energy (such as the Reference Signal Receiving Power (RSRP) of the Pysical Sidelink Control Channel (PSCCH)/Pysical Sidelink Share Channel (PSSCH) Or the received signal strength indication (Received Signal Strength Indication, RSSI)) is greater than a threshold, if the interval between the first selected transmission opportunity and the previous transmission is less than the time interval threshold, the first selected transmission opportunity is available.
  • RSRP Reference Signal Receiving Power
  • PSCCH Pysical Sidelink Control Channel
  • PSSCH Pysical Sidelink Share Channel
  • RSSI Receiveived Signal Strength Indication
  • the first communication node monitors transmission control messages and data sent by other communication nodes, and the measured energy (such as RSRP or RSSI of PSCCH/PSSCH ) is greater than a threshold, if the first selected transmission opportunity is still within the same remaining COT duration as the previous transmission, and the interval from the previous transmission is less than the time interval threshold, in addition, the priority (for example, the packet priority ( Prose Per Packet Priority, PPPP), channel access priority (Channel Access Priority Class, CAPA)) meets the threshold of shared COT, if the priority is greater than or equal to the priority indicated by the shared COT indicated by other communication nodes, that is, the priority value is less than the indicated priority value (the higher the priority, the lower the value), the first selected transport will be available.
  • the packet priority Prose Per Packet Priority, PPPP
  • channel access priority Channel Access Priority Class
  • the above time interval threshold can be 25us, 16us, or it can be indicated by the configuration of the base station, or it can be determined according to the monitoring type of the first communication node.
  • the monitoring type includes Type 1, Type 2A, Type 2B, Type 2C, etc.
  • the above usage conditions may include that the strength of the notification signal sent by other communication nodes is greater than the strength threshold; or, the channel priority is not lower than the channel priority indicated by other communication nodes that indicate to share the COT; or, other communication nodes
  • the strength of the sent notification signal is greater than the strength threshold, and the channel priority is not lower than the channel priority indicated by other communication nodes indicating to share the COT.
  • the first communication node performs channel monitoring before N symbols before a selected transmission opportunity, if the monitoring channel is idle, that is, LBT is successful, then it is determined that the selected transmission opportunity is available, and on the resources corresponding to the current transmission opportunity Send the communication data and send the announcement signal on the announcement signal resource before the current transmission opportunity.
  • the first communication node may send a notification signal to other communication nodes before the actual transmission, notifying that the transmission opportunity in the next slot is available, and the first communication node sends the notification signal on the selected available transmission opportunity SCI, the indicated COT duration is the value obtained according to the priority (eg, PPPP, CAPA), or the number of slots.
  • the priority eg, PPPP, CAPA
  • the first communication node may also perform sensing on the basis of high-layer instructions on the physical layer, and obtain a delay requirement within a COT duration according to a sensing rule (such as a similar sensing process defined by LTE and NR). collection of free resources.
  • a sensing rule such as a similar sensing process defined by LTE and NR.
  • collection of free resources In the set of idle resources, one or more resources are selected as selected transmission opportunities, such as randomly selected, or selected with a probability corresponding to the priority.
  • the COT duration means that the first communication node obtains a COT after LBT is successful, or the first communication node monitors the COT indicated in the control message of other communication nodes, or the first communication node monitors the COT obtained by the notification signal.
  • the first communication node determines that the transmission opportunity is unavailable, the first communication node sends an indication signaling to indicate that the current transmission opportunity is unavailable.
  • the first communication node sends the indication signaling in at least one of the following ways:
  • the high-level signaling indicates that the current transmission opportunity is unavailable, and trigger resource reselection; discard the current transmission opportunity, and send high-level signaling; discard the current transmission opportunity, and send indication information to the base station.
  • the transmission opportunity includes an initial transmission opportunity and/or a retransmission transmission opportunity.
  • the first communication node may also send a sidelink (sidelink) communication signal on the available transmission opportunity; where the sidelink communication signal is used to indicate the sidelink resource release sequence number (Sidelink Release Order, SRO) or the side link resource usage sequence number (Sidelink Assignment Order, SAO) of the resource corresponding to the transmission opportunity other than the available transmission opportunity in the resource usage information.
  • SRO sidelink Release Order
  • SAO side link resource usage sequence number
  • the aforementioned SRO or SAO may be indicated through sidelink control information (Sidelink Control Information, SCI) in the sidelink communication signal.
  • SCI Sidelink Control Information
  • the SCI indicating SRO or indicating SAO may include at least one of the following:
  • the indication information in the SAO field is 2 bits, which may include 00, 01, 10, and 11.
  • 00 can indicate that the RAO of the first communication node itself using the transmission opportunity is 0, then the communication node with the RAO of 1 can use the resource indicated by the SCI, 01 indicates that the communication node with the RAO of 2 can use the resource indicated by the SCI, and 10 indicates the RAO The communication node whose RAO is 3 can use the resource indicated by the SCI, and 11 indicates that the communication node whose RAO is 4 can use the resource indicated by the SCI.
  • the indication information in the SRO field is 2 bits, which may include 00, 01, 10, and 11.
  • 00 can indicate that the first communication node continues to use the resource indicated by SCI
  • 01 can indicate that the communication node with RAO of 1 can use the resource indicated by SCI
  • 10 can indicate that the communication node with RAO of 2 can use the resource indicated by SCI
  • 11 can indicate A communication node whose RAO is 3 can use the resources indicated by the SCI.
  • 1-bit identification bit indication For example, 1 indicates that SAO>0, or indicates that the resource indicated by the SCI is released; 0 indicates that the resource that continues to be used is reserved.
  • SCI implicitly indicates 0 for SAO or 1 for SRO. For example, if RAO supports up to two serial number values, which are 0 and 1, then the resource usage can be indicated implicitly by SCI. For example, SCI indicates that some resources are released resources, or indicates the SAO corresponding to the resource. is 0; or implicitly indicates that the SRO corresponding to the resource is 1.
  • the 2 nd -stage SCI format indicates SAO>0, indicating that the resource indicated by the SCI is released.
  • the SAO is determined according to the RAO in the resource usage information, where the SAO value may be equal to the RAO value.
  • the SRO may also be determined according to the RAO in the resource usage information, where the SRO value may be equal to the RAO value+1.
  • SAO can include at least one of the following:
  • the sequence number value is less than 2 (that is, order ⁇ 2, the system level includes two levels)
  • the SAO corresponding to the transmission opportunity indicated by the SCI is 0, that is, other communication nodes, for example, the communication node whose RAO is 1
  • the node can use the resource indicated by SCI; if the sequence number value is 1, the SAO corresponding to the transmission opportunity indicated by SCI is 1, that is, other communication nodes, for example, the communication node whose RAO is 2 can use the resource indicated by SCI.
  • the sequence number value is greater than 1 (that is, order>1, the system level includes multiple levels)
  • the SAO corresponding to the transmission opportunity indicated by the SCI is 0, that is, other communication nodes, for example, communication with RAO of 1
  • the node can use the resource indicated by SCI;
  • the sequence number value is k
  • the SAO corresponding to the transmission opportunity indicated by SCI is k, that is, other communication nodes, for example, the communication node whose RAO is k+1 can use the resource indicated by SCI, where k is an integer greater than 0.
  • SROs can include at least one of the following:
  • the sequence number value is less than 2 (that is, order ⁇ 2, the system level includes two levels)
  • the SRO corresponding to the transmission opportunity indicated by the SCI is 0, that is, other communication nodes cannot use the resources indicated by the SCI;
  • the sequence number value is 1, the SRO corresponding to the transmission opportunity indicated by the SCI is 1, that is, other communication nodes, for example, the communication node whose RAO is 1, can use the resource indicated by the SCI.
  • sequence number value is greater than 1 (that is, order>1, the system level includes multiple levels)
  • the SRO corresponding to the transmission opportunity indicated by the SCI is 0, that is, other communication nodes cannot use the resources indicated by the SCI;
  • the sequence number is k
  • the SRO corresponding to the transmission opportunity indicated by the SCI is k, that is, other communication nodes, for example, a communication node whose RAO is k can use the resources indicated by the SCI, where k is an integer greater than 0.
  • the first communication node obtains the three resources shown in FIG. Transmission opportunity 1 satisfies the channel usage conditions and sidelink communication can be transmitted, then send SCI on the resources corresponding to transmission opportunity 1, indicate the resources of transmission opportunity 2 and transmission opportunity 3, and indicate the resources of transmission opportunity 2 and transmission opportunity 3
  • the corresponding SRO is 1, or the SCI is sent to indicate the resources of the transmission opportunity 2 and the transmission opportunity 3, and indicate that the SAO corresponding to the transmission opportunity 2 and the transmission opportunity 3 is 0.
  • the second communication node (which may be other communication nodes except the first communication node) acquires the three resources shown in FIG. The resources overlap with the three resources obtained by the first communication node as shown in FIG. 7 .
  • the second communication node does not detect that the resource corresponding to the transmission opportunity 1 indicated by other communication nodes is released, and then gives up the first transmission opportunity.
  • the second communication node listens to the SCI sent by the first communication node before the second transmission opportunity, and the SCI indicates the resource of transmission opportunity 2/3, and the SRO corresponding to the resource of transmission opportunity 2/3 is 1; Or the SCI indicates the resource of transmission opportunity 2/3, and indicates that the SAO corresponding to the resource of transmission opportunity 2/3 is 0, then the second communication node determines that the resources corresponding to transmission opportunity 2 and transmission opportunity 3 are available.
  • the second communication node On the resource corresponding to transmission opportunity 2, if the channel use condition is satisfied, the second communication node sends a sidelink communication signal on the resource corresponding to transmission opportunity 2, and sends an SCI on the resource corresponding to transmission opportunity 2, indicating the transmission opportunity 3 resources, and indicate that the SRO corresponding to resource 3 is 2; or indicate that the SAO corresponding to resource 3 is 1.
  • FIG. 9 is a flow chart of another resource indication method provided by an embodiment of the present application.
  • the method may be executed by a second communication node, and is used to determine the availability of the acquired transmission opportunity based on the intercepted SCI sent by other communication nodes. Avoid resource conflicts with other communication nodes.
  • the method may include:
  • the second communications node uses the acquired at least one resource as a transmission opportunity.
  • the second communication node in the embodiment of the present application can be the first communication node in the embodiment shown in Figures 1-8, or other communication nodes, that is, the communication node can execute the method provided in the embodiment of Figure 1 , the method provided in the embodiment of FIG. 9 may also be executed.
  • the second communication node listens to the SCI sent by other communication nodes.
  • the other communication node in the embodiment of the present application may be the first communication node in the embodiment of FIG.
  • the other communication nodes in the embodiment of the present application may be other communication nodes in the above-mentioned embodiments of FIGS. 1-8 .
  • the second communication node can directly use the resource corresponding to the transmission opportunity when the channel usage condition is met, that is, not Need to listen to SCI sent by other communication nodes.
  • the resource use sequence number RAO level corresponding to the transmission opportunity obtained by the second communication node is k
  • the second communication node determines the availability of the transmission opportunity according to the SCI.
  • the second communication node may also monitor the channel, and judge the availability of the transmission opportunity according to the channel monitoring result.
  • the transmission opportunity in this embodiment of the present application may include an initial transmission opportunity and/or a retransmission transmission opportunity.
  • the implementation manner of determining the availability of the transmission opportunity in S903 may include at least one of the following:
  • the second communication node determines that the second condition is met, it determines that the transmission opportunity is available; when the second communication node determines that the second condition is not satisfied, it determines that the transmission opportunity is unavailable.
  • the second condition may include at least one of the following:
  • the second communication node satisfies the channel use condition. For example, before any transmission opportunity that is determined, the second communication node first listens and then says that the LBT is successful; or, the second communication node transmits data before any transmission opportunity that is determined, if the transmission opportunity for transmitting data occupies the remaining channel for as long as Within the COT, and the time interval between any determined transmission opportunity and the transmission opportunity for transmitting data is less than the threshold value; or, before any determined transmission opportunity, the second communication node listens to COT information sent by other communication nodes , if the COT information satisfies the use condition, any transmission opportunity determined is adjacent to the transmission time slot where the COT information is heard, and the time interval is smaller than the threshold value.
  • the resource usage sequence number corresponding to the transmission opportunity is the highest RAO level; the RAO level corresponding to the transmission opportunity is k, and the SAO indicated by the second communication node successfully listening to the SCI sent by other communication nodes is k-1; the RAO level corresponding to the transmission opportunity is k , and the SRO that the second communication node successfully intercepts the SCI indication sent by other communication nodes is k.
  • the second communication node determines that the transmission opportunity is available, the second communication node performs side link communication.
  • the side link communication performed by the second communication node may include at least one of the following:
  • SCI indicating SRO or indicating SAO may include at least one of the following:
  • SAO field indication in SCI SRO field indication in SCI; indicating resource selection mode, which implicitly indicates SAO or SRO; 1-bit identification bit indication; SCI implicitly indicates that SAO is 0 or SRO is 1. For example, if RAO supports up to 2 serial number values, and these 2 serial number values are 0 and 1 respectively, then you can indicate in the SCI that some resources are released resources, or indicate that the SAO corresponding to this resource is 0; or indicate that the corresponding SAO of this resource is SRO is 1; based on 2nd -stage SCI format indication.
  • the second communication node sends indication information.
  • the indication information sent by the second communication node may include at least one of the following:
  • the high-level signaling indicates that the current transmission opportunity is unavailable, triggering resource reselection; discarding the current transmission opportunity, and sending high-level signaling; discarding the current transmission opportunity, and sending indication information to the third communication node.
  • the second communication node obtains the three resources shown in FIG. 8 as transmission opportunities, and the RAO corresponding to the obtained transmission opportunities is k.
  • the above-mentioned successful detection of the SCI indicates successful decoding of the SCI
  • the demodulation reference signal (Demodulation Reference Signal, DMRS) RSRP of the PSSCH on the resource indicated by the SCI or the DMRS RSRP of the PSCCH is greater than a threshold value.
  • DMRS Demodulation Reference Signal
  • the second communication node On the resource corresponding to the transmission opportunity 2, if the channel use condition is met, the second communication node sends the sidelink communication on the resource corresponding to the transmission opportunity 2.
  • the second communication node sends the SCI on the resource corresponding to the transmission opportunity 2, indicating the resource of the transmission opportunity 3, and the SRO corresponding to the resource 3 is k+1; or indicating that the SAO corresponding to the resource 3 is k.
  • FIG. 10 is a flow chart of another resource indication method provided by the embodiment of the present application. This method can be executed by a third communication node, and is used to send resource indication information to other communication nodes, so that other communication nodes can obtain resource indication information based on The availability of acquired transmission opportunities is determined to avoid resource conflicts between communication nodes. As shown in Figure 10, the method may include:
  • the third communication node sends resource usage information to the first communication node.
  • the third communication node may be a base station or a network node (for example, a Road Side Unit (RSU)), and the first communication node may be a user equipment, a handheld terminal, and the like.
  • the resource usage information sent by the first communication node includes at least one transmission opportunity and an RAO, and the resource usage information is used to instruct the first communication node to determine the availability of the transmission opportunity.
  • RAO may include at least one of the following:
  • the sequence numbers of all transmission opportunities are the same, and all transmission opportunities are indicated based on a sequence number value; the initial transmission opportunity set and each retransmission transmission opportunity set correspond to their respective sequence number values; different transmission opportunities correspond to their respective sequence number values; multiple transmission opportunities
  • the serial number values of the opportunities are arranged in positive order according to the time sequence, where the initial value of the serial number value is 0 or the indicated value X, and X is an integer greater than or equal to 0; the serial number values of multiple transmission opportunities are arranged in reverse order according to the time sequence, where , the initial value of the sequence number is N or the indicated value Y, where N and Y are integers greater than 0.
  • RAOs include one of the following:
  • sequence number value When the sequence number value is less than 2 (that is, order ⁇ 2, the system level includes two levels), if the sequence number value is 0, it means that the sequence number value indicates that the current transmission opportunity meets the channel usage conditions and can be used; if the sequence number value is 1, it means the sequence number The value indicates that the condition that the current transmission opportunity can be used at least includes that the first communication node detects that other communication nodes release the resources corresponding to the current transmission opportunity; If the serial number value is 0, it means that the serial number indicates that the current transmission opportunity meets the channel usage conditions and can be used.
  • serial number value indicates that the serial number value indicates that the current transmission opportunity can be used if at least the first communication node detects that the serial number value is Other communication nodes corresponding to k-1 release resources corresponding to the current transmission opportunity, where k is an integer greater than 0.
  • the above RAO may be indicated by downlink control information (Downlink Control Information, DCI) or pre-configured.
  • DCI Downlink Control Information
  • a RAO value indicated by the DCI corresponds to all transmission opportunities indicated in the DCI, that is, all transmission opportunities indicated in the DCI have the same RAO value.
  • two RAO values are indicated by the DCI, the first RAO value is the RAO value corresponding to the initial transmission opportunity set, and the second RAO value is the RAO value corresponding to the retransmission transmission opportunity set.
  • DCI indicates three groups of transmission opportunity sets, correspondingly indicating three RAO values, the first RAO value is the RAO value corresponding to the first transmission opportunity set, and the second RAO value is the second transmission opportunity set The RAO value corresponding to the opportunity set, and the third RAO value is the RAO value corresponding to the third transmission opportunity set.
  • DCI indicates three transmission opportunities
  • the first RAO value is the RAO value corresponding to the first transmission opportunity
  • the second RAO value is the RAO value corresponding to the second transmission opportunity
  • the second RAO value is the RAO value corresponding to the second transmission opportunity.
  • the value is the RAO value corresponding to the third transmission opportunity.
  • three transmission opportunities are indicated by DCI, and the sequence number values of multiple transmission opportunities are sequentially increased by 1 (that is, positive sequence), the first transmission opportunity RAO value is 0, and the second transmission opportunity RAO value is 0. The value is 1, and so on.
  • three transmission opportunities are indicated by DCI, the order value of each transmission opportunity is decreased by 1 in chronological order (that is, in reverse order), the RAO value of the last transmission opportunity is 0, and the RAO value of the penultimate transmission opportunity is 0. is 1, and so on.
  • the above-mentioned transmission opportunity may include an initial transmission opportunity and/or a retransmission transmission opportunity, where the initial transmission opportunity includes one or more resources for initial transmission, and the resources may be used to transmit various physical channels of sidelink communication or Signal.
  • the retransmission transmission opportunity includes one or more groups of retransmission transmission opportunities, and each group of transmission opportunities includes one or more resources for retransmission sending, and the resources can be used to send various physical channels or signals of sidelink communication.
  • Fig. 11 is a schematic structural diagram of a resource indication device provided by an embodiment of the present application.
  • the device can be integrated in the first communication node.
  • the device can include: a communication module 1101 and a determination module 1102; wherein, The communication module 1101 is configured to receive resource usage information; the resource usage information includes resource location information of at least one transmission opportunity and the RAO of the transmission opportunity, or a set of resources to be used; a determination module 1102 is configured to determine the transmission opportunity according to the resource usage information availability.
  • the determining module 1102 selects a transmission opportunity corresponding to the RAO from at least one transmission opportunity, and determines availability of the selected transmission opportunity as available or unavailable.
  • the determining module 1102 monitors a channel to obtain a monitoring result, and determines the availability of transmission opportunities in the resource set to be used according to the monitoring result.
  • the above-mentioned RAO includes at least one of the following:
  • the sequence numbers of all transmission opportunities are the same, and all transmission opportunities are indicated based on a sequence number value; the initial transmission opportunity set and each retransmission transmission opportunity set correspond to their respective sequence number values; different transmission opportunities correspond to their respective sequence number values; multiple transmission opportunities
  • the serial number values of the opportunities are arranged in positive order according to the time sequence, where the initial value of the serial number value is 0 or the indicated value X, and X is an integer greater than or equal to 0; the serial number values of multiple transmission opportunities are arranged in reverse order according to the time sequence, where , the initial value of the serial number is N or the indicated value Y, where N and Y are integers greater than 0; the smaller the RAO serial number, the higher the priority.
  • RAO also includes one of the following:
  • serial number value When the serial number value is less than 2, if the serial number value is 0, it means that the serial number value indicates that the current transmission opportunity meets the channel usage conditions and can be used; if the serial number value is 1, it means that the serial number value indicates that the current transmission opportunity can use at least the first A communication node detects that other communication nodes release the resources corresponding to the current transmission opportunity; when the sequence number value is greater than 1, if the sequence number value is 0, it means that the sequence number value indicates that the current transmission opportunity meets the channel usage conditions and can be used.
  • sequence number value is k, indicating that the sequence number value indicates that the condition that the current transmission opportunity can be used at least includes that the first communication node detects that other communication nodes corresponding to the sequence number value k-1 release the resources corresponding to the current transmission opportunity, where k is an integer greater than 0 .
  • the determining module determines that the transmission opportunity is available; when the monitoring result does not meet the first condition, the determining module determines that the transmission opportunity is not available.
  • the above first condition includes: before any determined transmission opportunity, the determination module 1102 LBT succeeds, then any transmission opportunity is an available transmission opportunity; or, the communication module 1101 transmits data before any determined transmission opportunity, If the transmission opportunity for data transmission is within the remaining channel occupation time COT, and the time interval between any one of the determined transmission opportunities and the transmission opportunity for data transmission is less than the threshold value, then the determination module 1102 determines that any transmission opportunity is available or, before any determined transmission opportunity, the communication module 1101 monitors the COT information sent by other communication nodes, and if the COT information satisfies the conditions for use, any determined transmission opportunity corresponds to the transmission time slot in which the COT information is monitored. adjacent, and the time interval is less than the threshold value, then the determining module 1102 determines any transmission opportunity as an available transmission opportunity.
  • the above usage conditions include that the strength of the notification signal sent by other communication nodes is greater than the strength threshold; or, the usage conditions include that the channel priority is not lower than the channel priority indicated by other communication nodes that indicate to share the COT; or, use The conditions include that the intensity of the notification signal sent by other communication nodes is greater than the strength threshold, and the channel priority is not lower than the channel priority indicated by other communication nodes indicating to share the COT.
  • the communication module 1101 is further configured to send an indication signaling indicating that the current transmission opportunity is unavailable.
  • the above transmission opportunity includes an initial transmission opportunity and/or a retransmission transmission opportunity.
  • the communication module 1101 is further configured to send a side link communication signal on an available transmission opportunity
  • the side link communication signal is used to indicate the SAO of the resource corresponding to the transmission opportunity other than the available transmission opportunity in the SRO or the resource usage information.
  • the SCI in the sidelink communication signal may indicate SRO or indicate SAO.
  • SCI indicates SRO or indicates SAO, including at least one of the following:
  • SAO field indication in SCI SRO field indication in SCI; Indicate resource selection mode, SAO or SRO is implicitly indicated in resource selection mode; 1-bit identification bit indication; SCI implicitly indicates that SAO is 0 or SRO is 1; For example, if the RAO supports at most two serial number values, which are 0 and 1, then the current SCI implicitly indicates that the SAO is 0 or the SRO is 1. For example, the SCI indicates that some resources are released resources, or the SAO corresponding to the resource is 0; or the corresponding SRO is 1; it is indicated based on the 2nd -stage SCI format.
  • the SAO is determined according to the RAO in the resource usage information, and the SAO value is equal to the RAO value.
  • the SRO is determined according to the RAO in the resource usage information, and the SRO value is equal to the RAO value+1.
  • the above-mentioned SAO includes at least one of the following:
  • sequence number value is less than 2
  • the SAO corresponding to the transmission opportunity indicated by the SCI is 0; if the sequence number value is 1, the SAO corresponding to the transmission opportunity indicated by the SCI is 1; if the sequence number value is greater than 1
  • the sequence number value is 0, the SAO corresponding to the transmission opportunity indicated by the SCI is 0, and if the sequence number value is k, the SAO corresponding to the transmission opportunity indicated by the SCI is k, where k is an integer greater than 0.
  • SROs include at least one of the following:
  • sequence number value When the sequence number value is less than 2, if the sequence number value is 0, the SRO corresponding to the transmission opportunity indicated by the SCI is 0; if the sequence number value is 1, the SRO corresponding to the transmission opportunity indicated by the SCI is 1; Next, if the sequence number value is 0, the SRO corresponding to the transmission opportunity indicated by the SCI is 0, and if the sequence number value is k, the SRO corresponding to the transmission opportunity indicated by the SCI is k, where k is an integer greater than 0.
  • the resource indication device provided in this embodiment is used to implement the resource indication method in the embodiment shown in FIG. 1 , and its implementation principle and technical effect are similar, so details are not repeated here.
  • Fig. 12 is a schematic structural diagram of a resource indicating device provided by an embodiment of the present application.
  • the device may be integrated in a second communication node.
  • the device may include: a determination module 1201 and an interception module 1202; , the determining module is used to use at least one acquired resource as a transmission opportunity; the listening module is used to listen to the SCI sent by other communication nodes; the determining module is also used to determine the availability of the transmission opportunity according to the SCI.
  • the determining module 1201 determines that the transmission opportunity is available; when the second condition is not met, the determining module 1201 determines that the transmission opportunity is unavailable.
  • the above-mentioned second condition includes at least one of the following:
  • the resource indication device meets the channel usage conditions; the RAO level corresponding to the transmission opportunity is the highest; the RAO level corresponding to the transmission opportunity is k, and the listening module successfully intercepts the SAO indicated by the SCI sent by other communication nodes as k-1; the corresponding RAO level of the transmission opportunity is k-1; The RAO level is k, and the SRO that the interception module successfully intercepts the SCI indication sent by other communication nodes is k.
  • the above device may further include a communication module; when the determining module 1201 determines that the transmission opportunity is available, the communication module is used to perform side link communication; when the determining module 1201 determines that the transmission opportunity is not available, the communication module uses to send instructions.
  • the communication module is used to realize at least one of the following functions:
  • SCI indicates SRO or indicates SAO, including at least one of the following:
  • SAO field indication in SCI SRO field indication in SCI; Indicate resource selection mode, SAO or SRO is implicitly indicated in resource selection mode; 1-bit identification bit indication; SCI implicitly indicates that SAO is 0 or SRO is 1; For example, if the RAO supports at most two serial number values, which are 0 and 1, then the current SCI implicitly indicates that the SAO is 0 or the SRO is 1. For example, the SCI indicates that some resources are released resources, or the SAO corresponding to the resource is 0; or the SRO corresponding to the resource is 1; it is indicated based on the 2nd -stage SCI format.
  • the resource indicating device meeting the channel usage condition includes:
  • the resource indication device LBT succeeds; or, the resource indication device transmits data before any of the determined transmission opportunities, if the transmission opportunity for transmitting data is within the remaining channel occupation time length COT, and any of the determined The time interval between the transmission opportunity and the transmission opportunity for transmitting data is less than the threshold value; or, before any transmission opportunity is determined, the resource indication device monitors the COT information sent by other communication nodes, and if the COT information meets the usage conditions, determine Any one of the transmission opportunities is adjacent to the transmission time slot where the COT information is heard, and the time interval is smaller than the threshold value.
  • the communication module sends instruction information, including at least one of the following:
  • the high-level signaling indicates that the current transmission opportunity is unavailable, triggering resource reselection; discarding the current transmission opportunity, and sending high-level signaling; discarding the current transmission opportunity, and sending indication information to the third communication node.
  • the resource indication device provided in this embodiment is used to implement the resource indication method in the embodiment shown in FIG. 9 , and its implementation principle and technical effect are similar, and will not be repeated here.
  • Fig. 13 is a schematic structural diagram of a resource indication device provided by an embodiment of the present application.
  • the device can be integrated into a third communication node.
  • the device can include: a communication module 1301;
  • the first communication node sends resource usage information;
  • the resource usage information includes at least one transmission opportunity and RAO, and the resource usage information is used to instruct the first communication node to determine the availability of the transmission opportunity.
  • the above-mentioned RAO includes at least one of the following:
  • the sequence numbers of all transmission opportunities are the same, and all transmission opportunities are indicated based on a sequence number value; the initial transmission opportunity set and each retransmission transmission opportunity set correspond to their respective sequence number values; different transmission opportunities correspond to their respective sequence number values; multiple transmission opportunities
  • the serial number values of the opportunities are arranged in positive order according to the time sequence, where the initial value of the serial number value is 0 or the indicated value X, and X is an integer greater than or equal to 0; the serial number values of multiple transmission opportunities are arranged in reverse order according to the time sequence, where , the initial value of the sequence number is N or the indicated value Y, where N and Y are integers greater than 0.
  • RAOs include one of the following:
  • serial number value When the serial number value is less than 2, if the serial number value is 0, it means that the serial number value indicates that the current transmission opportunity meets the channel usage conditions and can be used; if the serial number value is 1, it means that the serial number value indicates that the current transmission opportunity can use at least the first A communication node detects that other communication nodes release the resources corresponding to the current transmission opportunity; when the sequence number value is greater than 1, if the sequence number value is 0, it means that the sequence number indicates that the current transmission opportunity meets the channel usage conditions and can be used.
  • sequence number value is k, indicating that the sequence number value indicates that the condition that the current transmission opportunity can be used at least includes that the first communication node detects that other communication nodes corresponding to the sequence number value k-1 release the resources corresponding to the current transmission opportunity, where k is an integer greater than 0 .
  • the resource indication device provided in this embodiment is used to implement the resource indication method in the embodiment shown in FIG. 10 , and its implementation principle and technical effect are similar, and details are not repeated here.
  • Fig. 14 is a schematic structural diagram of a communication node provided by an embodiment.
  • the node includes a processor 1401 and a memory 1402; the number of processors 1401 in the node may be one or more, and in Fig. 14 is One processor 1401 is taken as an example; the processor 1401 and the memory 1402 in a node may be connected through a bus or in other ways, and the connection through a bus is taken as an example in FIG. 14 .
  • the memory 1402 can be used to store software programs, computer-executable programs and modules, such as the program instructions/modules corresponding to the resource indication method in the embodiment of FIG. 1 of the present application (for example, FIGS. 10-13 Each module in the resource indication device provided by any embodiment).
  • the processor 1401 implements the above resource indication method by running software programs, instructions and modules stored in the memory 1402 .
  • the memory 1402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required by a function; the data storage area may store data created according to the use of the set-top box, and the like.
  • the memory 1402 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.
  • the processor in the above node may also implement the above resource indication method through its internal logic circuit, gate circuit and other hardware circuits.
  • the embodiment of the present application also provides a readable and writable storage medium for computer storage, the storage medium stores one or more programs, and one or more programs can be executed by one or more processors to perform the above implementation
  • the resource indication method in the example is also provided.
  • the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of multiple Physical components cooperate to perform.
  • Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
  • a processor such as a central processing unit, digital signal processor or microprocessor
  • Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
  • computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media.
  • Computer storage media include but not limited to Random Access Memory (Random Access Memory, RAM), Read-Only Memory (Read-Only Memory, ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM) , flash memory or other memory technology, compact disc read-only memory (Compact Disc Read-Only Memory, CD-ROM), digital versatile disc (Digital Versatile Disc, DVD) or other optical disc storage, magnetic cartridge, tape, magnetic disk storage or other magnetic storage device, or any other medium that can be used to store desired information and that can be accessed by a computer.
  • communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

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Abstract

本申请提供一种资源指示方法、节点和存储介质。该资源指示方法包括：第一通信节点接收资源使用信息；其中，资源使用信息包括至少一个传输机会的资源位置信息和传输机会的资源使用序号RAO，或者，待使用资源集合；第一通信节点根据资源使用信息确定传输机会的可用性。

Description

资源指示方法、节点和存储介质 技术领域
本申请涉及无线通信技术领域，例如涉及一种资源指示方法、节点和存储介质。
背景技术
在车用无线通信技术(Vehicle to X，V2X)通信、单边通信(Sidelink)、用户设备(User Equipment，UE)与UE直接通信(Device-to-Device，D2D)中，资源分配有模式一和模式二两种方式，模式一为基站调度方式分配资源，模式二为UE自主选择资源。对于模式一，经过中心节点，如基站的调度，UE之间的资源可以做到无冲突。对于模式二，由于没有中心节点的调度，UE之间需要按照一定规则，共享资源的同时还要尽可能的避免资源冲突。在长期演进(Long Term Evolution，LTE)V2X和新空口(New Redio，NR)V2X中，对于授权载波或智能传输系统(Intelligent Transform System，ITS)，针对周期性业务的传输特性，上述模式二下的UE可能通过接收其他UE发送的旁路控制信息(Sidelink Control Information，SCI)，获知其自身在以后周期的资源使用信息，在进行资源选择时避让已经被其他UE预留的资源，从而实现多UE之间的资源复用。对于模式一下的UE，其可能期望基站指示的资源与其他UE使用的资源不冲突，无法与其他UE共享相同的资源。但是对于一个竞争获得的传输机会，如非授权载波上，通过先听后说(Listen Before Talk，LBT)获得的一个信道占用时间(Channel Occupancy Time，COT)时间段内，如何实现多UE之间的资源复用并减小UE之间的资源冲突方案，NR V2X所定义的方法不再适用。
对于模式二资源选择模式，UE在共享使用一个资源池或载波或带宽部分(Bandwidth part，BWP)或信道(channel)时，需要通过监听(sensing)获得可用的一个资源或一组资源。NR V2X中，对于周期性业务和非周期性业务，可以通过监听其他发送UE的物理旁路控制信道(Physical Sidelink Control Channel，PSCCH)，获得指示的下一个周期的资源位置以及重传资源位置，从而选择其他未被使用的资源，避免其选择使用的资源与其他UE使用的资源发生资源冲突。但是对于共享频谱，UE获得一个竞争得到的传输机会，如何与其他UE共享COT时长时，能够尽可能地避免UE之间的资源冲突，还没有方案可以有效解决这个问题。
发明内容
本申请实施例的主要目的在于提出一种资源指示方法、节点和存储介质，能够实现通信节点基于接收到的资源使用信息确定传输机会的可用性，避免与其他通信节点之间的使用资源产生冲突。
本申请实施例提供了一种资源指示方法，该方法包括：
第一通信节点接收资源使用信息；
其中，资源使用信息包括至少一个传输机会的资源位置信息和传输机会的资源使用序号RAO，或者，待使用资源集合；
第一通信节点根据资源使用信息确定传输机会的可用性。
本申请实施例提供了一种资源指示方法，该方法包括：
第二通信节点将获取的至少一个资源作为传输机会；
第二通信节点侦听其他通信节点发送的边链路控制信息SCI；
第二通信节点根据SCI确定传输机会的可用性。
本申请实施例提供了一种资源指示方法，该方法包括：
第三通信节点向第一通信节点发送资源使用信息；
资源使用信息包括至少一个传输机会和资源使用序号RAO，资源使用信息用于指示所述第一通信节点确定传输机会的可用性。
本申请实施例提供了一种资源指示装置，该装置包括：
通信模块，用于接收资源使用信息；
其中，资源使用信息包括至少一个传输机会的资源位置信息和传输机会的资源使用序号RAO，或者，待使用资源集合；
确定模块，用于根据资源使用信息确定传输机会的可用性。
本申请实施例提供了一种资源指示装置，该装置包括：
确定模块，用于将获取的至少一个资源作为传输机会；
侦听模块，用于侦听其他通信节点发送的边链路控制信息SCI；
确定模块，用于根据SCI确定传输机会的可用性。
本申请实施例提供了一种资源指示装置，该装置包括：
通信模块，用于向第一通信节点发送资源使用信息；
资源使用信息包括至少一个传输机会和资源使用序号RAO，资源使用信息 用于指示第一通信节点确定传输机会的可用性。
本申请实施例提供了一种通信节点，包括：处理器，处理器执行计算机程序时，实现如本申请任一实施例提供的资源指示方法。
本申请实施例提供了一种可读写存储介质，包括：可读写存储介质存储有计算机程序，计算机程序被处理器执行时实现如本申请任一实施例提供的资源指示方法。
本申请实施例提供了一种资源指示方法、节点和存储介质，该方法包括：第一通信节点接收资源使用信息；其中，资源使用信息包括至少一个传输机会的资源位置信息和传输机会的资源使用序号RAO，或者，待使用资源集合；第一通信节点根据资源使用信息确定传输机会的可用性。基于上述方案可以避免通信节点与其他通信节点之间的使用资源产生冲突。
附图说明
图1是本申请实施例提供的一种资源指示方法的流程图；
图2是本申请实施例提供的一种传输机会为3的情况下，基于监听结果判断传输机会可用性的示意图；
图3是本申请实施例提供的一种传输机会为4的情况下，判断传输机会可用性的示意图；
图4是本申请实施例提供的另一种传输机会为4的情况下，判断传输机会可用性的示意图；
图5是本申请实施例提供的一种第一通信节点在传输机会之前发送通告信号的示意图；
图6是本申请实施例提供的一种其他通信节点基于监听的通告信号判断传输机会可用性的示意图；
图7是本申请实施例提供的一种第一通信节点基于三个资源发送SCI的示意图；
图8是本申请实施例提供的一种第二通信节点基于三个资源监听SCI的示意图；
图9是本申请实施例提供的另一种资源指示方法的流程图；
图10是本申请实施例提供的再一种资源指示方法的流程图；
图11是本申请实施例提供的一种资源指示装置的结构示意图；
图12是本申请实施例提供的另一种资源指示装置的结构示意图；
图13是本申请实施例提供的再一种资源指示装置的结构示意图；
图14是本申请实施例提供的一种通信节点的结构示意图。
具体实施方式
下文中将结合附图对本申请的实施例进行说明。
另外，在本申请实施例中，“可选地”或者“示例性地”等词用于表示作例子、例证或说明。本申请实施例中被描述为“可选地”或者“示例性地”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“可选地”或者“示例性地”等词旨在以具体方式呈现相关概念。
图1为本申请实施例提供的一种资源指示方法的流程图，该方法可以由第一通信节点执行，基于第一通信节点接收到的资源使用信息确定传输机会的可用性，避免与其他通信节点之间的使用资源产生冲突。如图1所示，该方法可以包括：
S101、第一通信节点接收资源使用信息。
在本申请实施例中，第一通信节点可以为用户设备(User Equipment，UE)、手持终端等，第一通信节点接收到的资源使用信息可以包括至少一个传输机会的资源位置信息和该传输机会的资源使用序号(Resource Assignment Order，RAO)，或者，该资源使用信息可以包括待使用资源集合。
S102、第一通信节点根据资源使用信息确定传输机会的可用性。
第一通信节点根据接收到的资源使用信息确定出传输机会的可用性，可以明确自身可用的传输机会或不可用的传输机会，从而避免与其他通信节点使用的资源产生冲突。
示例性地，在资源使用信息包括至少一个传输机会的资源位置信息和该传输机会的RAO的情况下，上述S102的实现方式可以包括：第一通信节点在至少一个传输机会中选择与RAO对应的传输机会，并确定选择的传输机会的可用性为可用或不可用。
在一种示例中，上述RAO可以包括以下至少之一：
所有传输机会的序号相同，且基于一个序号值指示所有传输机会；初传传输机会集合和每个重传传输机会集合分别对应各自的序号值；不同传输机会分别对应各自的序号值；多个传输机会的序号值按照时间先后顺序正序排列，其中，序号值的初始值为0或指示值X，X为大于或等于0的整数；多个传输机 会的序号值按照时间先后顺序倒序排列，其中，序号值的初始值为N或指示值Y，N和Y为大于0的整数；RAO序号值越小，优先级越高。
在一种示例中，上述RAO包括以下之一：
在序号值小于2的情况下，若序号值为0，表示序号值指示当前传输机会满足信道使用条件即可使用，若序号值为1，表示序号值指示当前传输机会可使用的条件至少包括第一通信节点侦听到其他通信节点释放当前传输机会对应的资源；在序号值大于1的情况下，若序号值为0，表示序号值指示当前传输机会满足信道使用条件即可使用，若序号值为k，表示序号值指示当前传输机会可使用的条件至少包括第一通信节点侦听到序号值为k-1对应的其他通信节点释放当前传输机会对应的资源，其中，k为大于0的整数。
在资源使用信息包括待使用资源集合的情况下，上述S102的实现方式可以包括：第一通信节点监听信道获取监听结果，并根据监听结果确定待使用资源集合中的传输机会的可用性。
示例性地，第一通信节点监听信道可以包括以下三种情况：
一、第一通信节点在一个选择的传输机会之前，先听后说(Listen before Talk，LBT)成功，即监听信道的结果为空闲。
二、一个已选择的传输机会之前，第一通信节点进行发送，且当前传输机会在剩余COT时长内。
三、一个已选择的传输机会之前，第一通信节点监听到其他通信节点共享的COT信息，且满足COT使用条件。
可选地，第一通信节点根据监听结果确定待使用资源集合中传输机会的可用性，可以包括以下至少之一：
在监听结果满足第一条件的情况下，第一通信节点确定传输机会可用；在监听结果不满足第一条件的情况下，第一通信节点确定传输机会不可用。
上述第一条件可以为信道监听条件，示例性地，该第一条件可以包括：在确定的任一个传输机会之前，第一通信节点LBT成功，即监听信道结果为空，则任一个传输机会为可用传输机会。如图2所示，假设第一通信节点获取3个传输机会，在第一个传输机会之前，第一通信节点进行了Type 1类型的信道监听，若监听信道空间，即LBT成功，则第一个传输机会可用，第一通信节点在第一个传输机会对应的资源上发送通信信号或信道。如果监听信道忙碌，即LBT不成功，则第一个传输机会对应的资源失效，第一通信节点不发送通信信号或信道。
或者，第一通信节点在确定的任一个传输机会之前传输了数据，若传输数据的传输机会在剩余信道占用时长(Channel Occupancy Time，COT)内，且确定的任一个传输机会与传输数据的传输机会之间的时间间隔小于门限值，则任一个传输机会为可用传输机会。如图3所示，假设第一通信节点获得的通信所选择的传输机会有四个，在第一个已选择的传输机会之前，第一通信节点进行了其他数据的发送，如果第一个已选择的传输机会与之前的传输在相同的剩余COT时长内，并且与之前的传输的间隔小于时间间隔门限，则第一个所选择的传输机会可用，那么第一通信节点可以在当前传输机会对应的资源上发送通信数据。
或者，在确定的任一个传输机会之前，第一通信节点监听到其他通信节点发送的COT信息，若COT信息满足使用条件，确定的任一个传输机会与监听到COT信息的传输时隙相邻，并且时间间隔小于门限值，则该任一个传输机会为可用传输机会。如图4所示，若第一通信节点获得的通信所使用的选择的传输机会有四个，在第一个已选择的传输机会之前，第一通信节点监听到其他通信节点发送的传输控制消息和数据，并且测量到的能量(如物理旁路控制信道(Pysical Sidelink Control Channel，PSCCH)/物理旁路共享信道(Pysical Sidelink Share Channel，PSSCH)的参考信号接收功率(Reference Signal Receiving Power，RSRP)或接收信号强度指示(Received Signal Strength Indication，RSSI))大于一个门限，如果第一个已选择的传输机会与之前的传输的间隔小于时间间隔门限，则第一个所选择的传输机会可用。
或者，如图4所示，在第一个已选择的传输机会之前，第一通信节点监听到其他通信节点发送的传输控制消息和数据，并且测量到的能量(如PSCCH/PSSCH的RSRP或RSSI)大于一个门限，如果第一个已选择的传输机会与之前的传输仍在相同的剩余COT时长内，并且与之前传输的间隔小于时间间隔门限，此外，优先级(例如，数据包优先级(Prose Per Packet Priority，PPPP)，信道接入优先级(Channel Access Priority Class，CAPA))满足共享COT的门限，如优先级大于或等于其他通信节点指示的共享COT指示的优先级，即优先级值小于指示的优先级值(优先级越高，值越小)，则第一个所选择的传输机会可用。
上述时间间隔门限可以为25us、16us，或者由基站配置指示，或者根据第一通信节点的监听类型确定，监听类型包括Type 1，Type 2A，Type 2B，Type 2C等。
可选地，上述使用条件可以包括其他通信节点发送的通告信号强度大于强度门限值；或者，信道优先级不低于其他指示共享COT的通信节点所指示的信 道优先级；或者，其他通信节点发送的通告信号强度大于强度门限值，且信道优先级不低于其他指示共享COT的通信节点所指示的信道优先级。
可选地，若第一通信节点在一个选择的传输机会之前的N个符号之前进行信道监听，如果监听信道空闲，即LBT成功，则判断已选择传输机会可用，在当前传输机会对应的资源上发送通信数据，并在当前传输机会之前的通告信号资源上发送通告信号。
如图5所示，第一通信节点在实际传输之前可以向其他通信节点发送的通告信号，通知紧接的slot内的传输机会可用，并且，第一通信节点在选择的可用的传输机会上发送SCI，指示的COT时长为根据优先级(例如，PPPP，CAPA)获得的值，或slot数。
相应地，如图6所示，若其他通信节点在一个选择的传输机会之前，成功监听到通告信号，且该信号的强度大于或等于门限值，则表示该通告信号之后相邻的slot中选择的传输机会可用，则其他通信节点在选择的可用传输机会上发送控制消息(例如，SCI)和数据，指示的COT时长为0或保留值。
在一种示例中，第一通信节点还可以基于高层指示物理层进行监听(sensing)，根据sensing规则(如LTE和NR定义的类似的sensing过程)，获得在一个COT时长内的满足时延要求的空闲资源集合。在该空闲资源集合中，选择一个或多个资源，作为选择的传输机会，如随机选择，或以优先级对应的概率进行选择。该COT时长内是指第一通信节点LBT成功，获得一个COT，或第一通信节点监听到其他通信节点控制消息中指示的COT，或第一通信节点监听通告信号获得的COT。
在第一通信节点确定传输机会不可用的情况下，第一通信节点发送指示信令指示当前传输机会不可用。例如，第一通信节点通过以下至少之一的方式发送指示信令：
发送高层信令，该高层信令指示当前传输机会不可用，触发资源重选；丢弃当前传输机会，并发送高层信令；丢弃当前传输机会，并向基站发送指示信息。
在本申请实施例中，传输机会包括初传传输机会和/或重传传输机会。
在第一通信节点确定传输机会可用的情况下，第一通信节点还可以在可用的传输机会上发送边链路(sidelink)通信信号；其中，该sidelink通信信号用于指示边链路资源释放序号(Sidelink Release Order，SRO)或资源使用信息中除可用的传输机会之外的传输机会对应的资源的边链路资源使用序号(Sidelink Assignment Order，SAO)。SRO指示的资源的使用序号越大，表示资源使用优 先级越低，SRO指示的资源的释放序号越大，表示允许使用资源的SRO序号越大。
可以通过sidelink通信信号中边链路控制信息(Sidelink Control Information，SCI)指示上述SRO或SAO。
示例性地，SCI指示SRO或指示SAO可以包括以下至少之一：
在SCI中的SAO域指示。例如，SAO域中的指示信息为2bits，可以包括00，01，10，11。其中，00可以表示第一通信节点自身使用传输机会的RAO为0，那么RAO为1的通信节点可以使用SCI指示的资源，01表示RAO为2的通信节点可以使用SCI指示的资源，10表示RAO为3的通信节点可以使用SCI指示的资源，11表示RAO为4的通信节点可以使用SCI指示的资源。
在SCI中的SRO域指示。例如，SRO域中的指示信息为2bits，可以包括00，01，10，11。其中，00可以表示第一通信节点继续使用SCI指示的资源，01可以表示RAO为1的通信节点可以使用SCI指示的资源，10可以表示RAO为2的通信节点可以使用SCI指示的资源，11表示RAO为3的通信节点可以使用SCI指示的资源。
指示资源选择模式，该资源选择模式中隐含指示SAO或SRO。例如，指示资源选择模式为模式一，即基站调度方式，表示SAO＝0，或SRO＞0，说明需要释放SCI指示的资源。
1比特标识位指示。例如，1表示SAO＞0，或表示释放SCI指示的资源；0表示预留继续使用的资源。
SCI隐含指示SAO为0或SRO为1。例如，若RAO最多支持2个序号值，分别为0和1，那么可以通过SCI隐含指示的方式指示资源的使用情况，比如，SCI中指示部分资源为释放资源，或指示该资源对应的SAO为0；或隐含指示该资源对应的SRO为1。
基于2 nd-stage SCI format指示。其中，2 nd-stage SCI format指示SAO＞0，表示释放该SCI指示的资源。
在一种示例中，上述SAO根据资源使用信息中的RAO确定，其中，SAO值可以等于RAO值。
在一种示例中，上述SRO也可以根据资源使用信息中的RAO确定，其中，SRO值可以等于RAO值+1。
SAO可以包括以下至少之一：
在序号值小于2(即order＜2，系统级包括两级)的情况下，若序号值为0， SCI指示的传输机会对应的SAO为0，即其他通信节点，例如，RAO为1的通信节点可以使用SCI指示的资源；若序号值为1，SCI指示的传输机会对应的SAO为1，即其他通信节点，例如，RAO为2的通信节点可以使用SCI指示的资源.
在序号值大于1(即order＞1，系统级包括多级)的情况下，若序号值为0，SCI指示的传输机会对应的SAO为0，即其他通信节点，例如，RAO为1的通信节点可以使用SCI指示的资源；若序号值为k，SCI指示的传输机会对应的SAO为k，即其他通信节点，例如，RAO为k+1的通信节点可以使用SCI指示的资源，其中，k为大于0的整数。
SRO可以包括以下至少之一：
在序号值小于2(即order＜2，系统级包括两级)的情况下，若序号值为0，SCI指示的传输机会对应的SRO为0，即其他通信节点不可以使用SCI指示的资源；若序号值为1，SCI指示的传输机会对应的SRO为1，即其他通信节点，例如，RAO为1的通信节点可以使用SCI指示的资源。
在序号值大于1(即order＞1，系统级包括多级)的情况下，若序号值为0，SCI指示的传输机会对应的SRO为0，即其他通信节点不可以使用SCI指示的资源；若序号值为k，SCI指示的传输机会对应的SRO为k，即其他通信节点，例如，RAO为k的通信节点可以使用SCI指示的资源其中，k为大于0的整数。
如图7所示，假设第一通信节点获取图7所示的三个资源(即传输机会1、传输机会2、传输机会3)，其对应的资源使用序号RAO为0，第一通信节点在传输机会1上满足信道的使用条件，可以进行sidelink通信的传输，那么在传输机会1对应的资源上发送SCI，指示传输机会2、传输机会3的资源，并指示传输机会2、传输机会3资源对应的SRO为1，或发送SCI，指示传输机会2、传输机会3的资源，并指示传输机会2、传输机会3对应的SAO为0。
如图8所示，假设第二通信节点(可以为除第一通信节点之外的其他通信节点)获取如图8所示的三个资源，其对应的资源使用序号RAO为1，这三个资源与第一通信节点获取的如图7所示的三个资源重叠。第二通信节点在第一个传输机会之前，没有监听到其他通信节点指示的传输机会1对应的资源被释放，则放弃第一个传输机会。若第二通信节点在第2个传输机会之前，监听到了第一通信节点发送的SCI，并且该SCI指示了传输机会2/3的资源，以及传输机会2/3的资源对应的SRO为1；或该SCI指示了传输机会2/3的资源，并指示传输机会2/3的资源对应的SAO为0，那么第二通信节点判断传输机会2、传输机会3对应的资源可用。在传输机会2对应的资源上，满足信道使用条件，则第二通信节点在传输机会2对应的资源上进行sidelink通信信号发送，并在传输 机会2对应的资源上发送SCI，指示传输机会3的资源，并指示资源3对应的SRO为2；或指示资源3对应的SAO为1。
图9为本申请实施例提供的另一种资源指示方法的流程图，该方法可以由第二通信节点执行，用于基于侦听到的其他通信节点发送的SCI确定获取的传输机会的可用性，避免与其他通信节点之间的使用资源产生冲突。如图9所示，该方法可以包括：
S901、第二通信节点将获取的至少一个资源作为传输机会。
本申请实施例中的第二通信节点可以为图1-图8所示实施例中的第一通信节点，也可以为其他通信节点，即该通信节点既可以执行图1实施例所提供的方法，也可以执行图9实施例所提供的方法。
S902、第二通信节点侦听其他通信节点发送的SCI。
在第二通信节点为图1-图8实施例中的其他通信节点的情况下，本申请实施例中的其他通信节点可以为上述图1-图8实施例中的第一通信节点，在第二通信节点为图1-图8实施例中的第一通信节点的情况下，本申请实施例中的其他通信节点可以为上述图1-图8实施例中的其他通信节点。
示例性地，在第二通信节点获得的传输机会对应的RAO等级最高(如RAO＝0)的情况下，第二通信节点在满足信道使用条件时可直接使用该传输机会对应的资源，即不需要侦听其他通信节点发送的SCI。在第二通信节点获得的传输机会对应的资源使用序号RAO等级为k的情况下，第二通信节点侦听其他通信节点发送的SCI。若成功侦听SCI指示的SAO＝k-1，或成功侦听SCI指示的SRO＝k，表示该SCI指示的传输机会对应的资源被释放，则第二通信节点在满足信道使用条件时可直接使用该传输机会对应的资源。
第二通信节点侦听到SCI，对于SCI中指示的SAO或SRO，若RAO＞SAO或RAO＝SRO，表示第二通信节点允许使用发送SCI的通信节点所释放的资源。
S903、第二通信节点根据SCI确定传输机会的可用性。
可选地，第二通信节点也可以监听信道，根据信道监听结果判断传输机会的可用性。本申请实施例中的传输机会可以包括初传传输机会和/或重传传输机会。
示例性地，S903中确定传输机会的可用性的实现方式可以至少包括以下之一：
第二通信节点确定在满足第二条件的情况下，确定传输机会可用；第二通信节点确定在不满足第二条件的情况下，确定传输机会不可用。
示例性地，第二条件可以包括以下至少之一：
第二通信节点满足信道使用条件。例如，在确定的任一个传输机会之前，第二通信节点先听后说LBT成功；或者，第二通信节点在确定的任一个传输机会之前传输数据，若传输数据的传输机会在剩余信道占用时长COT内，且确定的任一个传输机会与传输数据的传输机会之间的时间间隔小于门限值；或者，在确定的任一个传输机会之前，第二通信节点监听到其他通信节点发送的COT信息，若COT信息满足使用条件，确定的任一个传输机会与监听到COT信息的传输时隙相邻，并且时间间隔小于门限值。
传输机会对应的资源使用序号RAO等级最高；传输机会对应的RAO等级为k，且第二通信节点成功侦听其他通信节点发送的SCI指示的SAO为k-1；传输机会对应的RAO等级为k，且第二通信节点成功侦听其他通信节点发送的SCI指示的SRO为k。
若第二通信节点确定传输机会可用，则第二通信节点进行边链路通信。
例如，第二通信节点进行边链路通信可以包括以下至少之一：
在当前传输机会对应的资源上发送物理信道或物理信号的通信信息；确定第一个可用资源为初传资源，确定其他可用资源为重传资源。
在当前传输机会对应的资源上发送SCI，指示SRO或指示SAO。
SCI指示SRO或指示SAO可以包括以下至少之一：
在SCI中的SAO域指示；在SCI中的SRO域指示；指示资源选择模式，所述资源选择模式中隐含指示SAO或SRO；1比特标识位指示；SCI隐含指示SAO为0或SRO为1。例如，若RAO最多支持2个序号值，这2个序号值分别为0和1，那么可以在SCI中指示部分资源为释放资源，或指示该资源对应的SAO为0；或指示该资源对应的SRO为1；基于2 nd-stage SCI format指示。
若第二通信节点确定传输机会不可用，则第二通信节点发送指示信息。例如，第二通信节点发送指示信息可以包括如下至少之一：
发送高层信令，高层信令指示当前传输机会不可用，触发资源重选；丢弃当前传输机会，并发送高层信令；丢弃当前传输机会，并向第三通信节点发送指示信息。
如图8所示，假设第二通信节点获取如图8所示的三个资源作为传输机会，并获取传输机会对应的RAO为k。第二通信节点侦听当前资源池其他通信节点发送的SCI，若第二通信节点在第2个传输机会之前成功侦听SCI指示的SAO＝k-1，或成功侦听SCI指示的SRO＝k，并且该SCI指示的资源包括了传输 机会2、传输机会3对应的资源，那么第二通信节点判断传输机会2、传输机会3对应的资源可用。其中，上述成功侦听到SCI，表示成功解码SCI，并且SCI所指示资源上PSSCH的解调参考信号(Demodulation Reference Signal，DMRS)RSRP或PSCCH的DMRS RSRP大于一个门限值。
在传输机会2对应的资源上，如果满足信道使用条件，则第二通信节点在传输机会2对应的资源上进行sidelink通信的发送。可选地，第二通信节点在传输机会2对应的资源上发送SCI，指示传输机会3的资源，以及资源3对应的SRO为k+1；或指示资源3对应的SAO为k。
图10为本申请实施例提供的再一种资源指示方法的流程图，该方法可以由第三通信节点执行，用于向其他通信节点发送资源指示信息，使其他通信节点基于获取的资源指示信息确定获取的传输机会的可用性，避免通信节点之间的使用资源产生冲突。如图10所示，该方法可以包括：
S1001、第三通信节点向第一通信节点发送资源使用信息。
本申请实施例中，第三通信节点可以为基站或网络节点(例如，路侧单元(Road Side Unit，RSU))，第一通信节点可以为用户设备、手持终端等。第一通信节点发送的资源使用信息包括至少一个传输机会和RAO，资源使用信息用于指示第一通信节点确定传输机会的可用性。
示例性地，RAO可以包括以下至少之一：
所有传输机会的序号相同，且基于一个序号值指示所有传输机会；初传传输机会集合和每个重传传输机会集合分别对应各自的序号值；不同传输机会分别对应各自的序号值；多个传输机会的序号值按照时间先后顺序正序排列，其中，序号值的初始值为0或指示值X，X为大于或等于0的整数；多个传输机会的序号值按照时间先后顺序倒序排列，其中，序号值的初始值为N或指示值Y，N和Y为大于0的整数。
在一种示例中，RAO包括以下之一：
在序号值小于2(即order＜2，系统级包括两级)的情况下，若序号值为0，表示序号值指示当前传输机会满足信道使用条件即可使用，若序号值为1，表示序号值指示当前传输机会可使用的条件至少包括第一通信节点侦听到其他通信节点释放当前传输机会对应的资源；在序号值大于1(即order＞1，系统级包括多级)的情况下，若序号值为0，表示序号指指示当前传输机会满足信道使用条件即可使用，若序号值为k，表示序号值指示当前传输机会可使用的条件至少包括第一通信节点侦听到序号值为k-1对应的其他通信节点释放当前传输机会对应的资源，其中，k为大于0的整数。
上述RAO可以由下行控制信息(Downlink Control Information，DCI)指示或预配置指示。例如，由DCI指示一个RAO值，该RAO值对应于DCI中指示的所有传输机会，即DCI中指示的所有传输机会具有相同的RAO值。
在一个示例中，由DCI指示了两个RAO值，第一个RAO值为初传传输机会集合对应的RAO值，第二个RAO值为重传传输机会集合对应的RAO值。
在另一个示例中，由DCI指示三组传输机会集合，对应指示了三个RAO值，第一个RAO值为第一个传输机会集合对应的RAO值，第二个RAO值为第二个传输机会集合对应的RAO值，第三个RAO值为第三个传输机会集合对应的RAO值。
在另一个示例中，由DCI指示三个传输机会，第一个RAO值为第一个传输机会对应的RAO值，第二个RAO值为第二个传输机会对应的RAO值，第二个RAO值为第三个传输机会对应的RAO值。
在另一个示例中，由DCI指示三个传输机会，多个传输机会的序号值按照时间先后顺序依次加1(即正序)，第一个传输机会RAO值为0，第二个传输机会RAO值为1，以此类推。
在另一个示例中，由DCI指示三个传输机会，每个传输机会的order值按照时间先后顺序依次减1(即倒序)，最后一个传输机会RAO值为0，倒数第二个传输机会RAO值为1，以此类推。
上述传输机会可以包括初传传输机会和/或重传传输机会，其中，初传传输机会包括一个或多个用于初传发送的资源，该资源可以用于发送sidelink通信的各种物理信道或信号。重传传输机会包括一组或多组重传传输机会，每组传输机会包括一个或多个用于重传发送的资源，该资源可以用于发送sidelink通信的各种物理信道或信号。
图11为本申请实施例提供的一种资源指示装置的结构示意图，该装置可以集成于第一通信节点中，如图11所示，该装置可以包括：通信模块1101、确定模块1102；其中，通信模块1101，用于接收资源使用信息；该资源使用信息包括至少一个传输机会的资源位置信息和传输机会的RAO，或者，待使用资源集合；确定模块1102，用于根据资源使用信息确定传输机会的可用性。
例如，确定模块1102在至少一个传输机会中选择与RAO对应的传输机会，并确定选择的传输机会可用性为可用或不可用。
或者，确定模块1102监听信道获取监听结果，并根据监听结果确定待使用资源集合中传输机会的可用性。
示例性地，上述RAO包括以下至少之一：
所有传输机会的序号相同，且基于一个序号值指示所有传输机会；初传传输机会集合和每个重传传输机会集合分别对应各自的序号值；不同传输机会分别对应各自的序号值；多个传输机会的序号值按照时间先后顺序正序排列，其中，序号值的初始值为0或指示值X，X为大于或等于0的整数；多个传输机会的序号值按照时间先后顺序倒序排列，其中，序号值的初始值为N或指示值Y，N和Y为大于0的整数；RAO序号值越小，优先级越高。
可选地，RAO还包括以下之一：
在序号值小于2的情况下，若序号值为0，表示序号值指示当前传输机会满足信道使用条件即可使用，若序号值为1，表示序号值指示当前传输机会可使用的条件至少包括第一通信节点侦听到其他通信节点释放当前传输机会对应的资源；在序号值大于1的情况下，若序号值为0，表示序号值指示当前传输机会满足信道使用条件即可使用，若序号值为k，表示序号值指示当前传输机会可使用的条件至少包括第一通信节点侦听到序号值为k-1对应的其他通信节点释放当前传输机会对应的资源，其中，k为大于0的整数。
在一种示例中，在监听结果满足第一条件的情况下，确定模块确定传输机会可用；在监听结果不满足第一条件的情况下，确定模块确定传输机会不可用。
示例性地，上述第一条件包括：在确定的任一个传输机会之前，确定模块1102LBT成功，则任一个传输机会为可用传输机会；或者，通信模块1101在确定的任一个传输机会之前传输数据，若传输数据的传输机会在剩余信道占用时长COT内，且确定的任一个传输机会与所述传输数据的传输机会之间的时间间隔小于门限值，则确定模块1102确定任一个传输机会为可用传输机会；或者，在确定的任一个传输机会之前，通信模块1101监听到其他通信节点发送的COT信息，若COT信息满足使用条件，确定的任一个传输机会与监听到COT信息的传输时隙相邻，并且时间间隔小于门限值，则确定模块1102确定任一个传输机会为可用传输机会。
可选地，上述使用条件包括其他通信节点发送的通告信号强度大于强度门限值；或者，使用条件包括信道优先级不低于其他指示共享COT的通信节点所指示的信道优先级；或者，使用条件包括其他通信节点发送的通告信号强度大于强度门限值，且信道优先级不低于其他指示共享COT的通信节点所指示的信道优先级。
在一种示例中，在确定模块1102确定传输机会不可用的情况下，通信模块1101还用于发送指示信令指示当前传输机会不可用。
上述传输机会包括初传传输机会和/或重传传输机会。
在一种示例中，通信模块1101还用于在可用的传输机会上发送边链路通信信号；
其中，边链路通信信号用于指示SRO或资源使用信息中除可用的传输机会之外的传输机会对应的资源的SAO。
边链路通信信号中的SCI可以指示SRO或指示SAO。
例如，SCI指示SRO或指示SAO，包括以下至少之一：
在SCI中的SAO域指示；在SCI中的SRO域指示；指示资源选择模式，资源选择模式中隐含指示SAO或SRO；1比特标识位指示；SCI隐含指示SAO为0或SRO为1；例如，若RAO最多支持2个序号值，分别为0和1，那么当前SCI隐含指示SAO为0或SRO为1。比如，SCI中指示部分资源为释放资源，或资源对应的SAO为0；或所述对应的SRO为1；基于2 nd-stage SCI format指示。
示例性地，SAO根据资源使用信息中的RAO确定，SAO值等于RAO值。
SRO根据资源使用信息中的RAO确定，SRO值等于RAO值+1。
上述SAO包括以下至少之一：
在序号值小于2的情况下，若序号值为0，SCI指示的传输机会对应的SAO为0，若序号值为1，SCI指示的传输机会对应的SAO为1；在序号值大于1的情况下，若序号值为0，SCI指示的传输机会对应的SAO为0，若序号值为k，SCI指示的传输机会对应的SAO为k，其中，k为大于0的整数。
SRO包括以下至少之一：
在序号值小于2的情况下，若序号值为0，SCI指示的传输机会对应的SRO为0，若序号值为1，SCI指示的传输机会对应的SRO为1；在序号值大于1的情况下，若序号值为0，SCI指示的传输机会对应的SRO为0，若序号值为k，SCI指示的传输机会对应的SRO为k，其中，k为大于0的整数。
本实施例提供的资源指示装置用于实现图1所示实施例的资源指示方法，其实现原理和技术效果类似，此处不再赘述。
图12为本申请实施例提供的一种资源指示装置的结构示意图，该装置可以集成于第二通信节点中，如图12所示，该装置可以包括：确定模块1201、侦听模块1202；其中，确定模块用于将获取的至少一个资源作为传输机会；侦听模块，用于侦听其他通信节点发送的SCI；确定模块，还用于根据SCI确定传输机会的可用性。
例如，在满足第二条件的情况下，确定模块1201确定传输机会可用；在不 满足第二条件的情况下，确定模块1201确定传输机会不可用。
上述第二条件包括以下至少之一：
资源指示装置满足信道使用条件；传输机会对应的RAO等级最高；传输机会对应的RAO等级为k，且侦听模块成功侦听其他通信节点发送的SCI指示的SAO为k-1；传输机会对应的RAO等级为k，且侦听模块成功侦听其他通信节点发送的SCI指示的SRO为k。
在一种示例中，上述装置还可以包括通信模块；确定模块1201确定传输机会可用的情况下，通信模块用于进行边链路通信；确定模块1201确定传输机会不可用的情况下，通信模块用于发送指示信息。
示例性地，通信模块，用于实现以下至少之一的功能：
在当前传输机会对应的资源上发送物理信道或物理信号的通信信息；确定第一个可用资源为初传资源，确定其他可用资源为重传资源。
在当前传输机会对应的资源上发送SCI，指示SRO或指示SAO。
其中，SCI指示SRO或指示SAO，包括以下至少之一：
在SCI中的SAO域指示；在SCI中的SRO域指示；指示资源选择模式，资源选择模式中隐含指示SAO或SRO；1比特标识位指示；SCI隐含指示SAO为0或SRO为1；例如，若RAO最多支持2个序号值，分别为0和1，那么当前SCI隐含指示SAO为0或SRO为1。比如，SCI中指示部分资源为释放资源，或资源对应的SAO为0；或资源对应的SRO为1；基于2 nd-stage SCI format指示。
在一种示例中，资源指示装置满足信道使用条件包括：
在确定的任一个传输机会之前，资源指示装置LBT成功；或者，资源指示装置在确定的任一个传输机会之前传输数据，若传输数据的传输机会在剩余信道占用时长COT内，且确定的任一个传输机会与传输数据的传输机会之间的时间间隔小于门限值；或者，在确定的任一个传输机会之前，资源指示装置监听到其他通信节点发送的COT信息，若COT信息满足使用条件，确定的任一个传输机会与监听到COT信息的传输时隙相邻，并且时间间隔小于门限值。
在一种示例中，通信模块发送指示信息，包括以下至少之一：
发送高层信令，该高层信令指示当前传输机会不可用，触发资源重选；丢弃当前传输机会，并发送高层信令；丢弃当前传输机会，并向第三通信节点发送指示信息。
本实施例提供的资源指示装置用于实现图9所示实施例的资源指示方法， 其实现原理和技术效果类似，此处不再赘述。
图13为本申请实施例提供的一种资源指示装置的结构示意图，该装置可以集成于第三通信节点中，如图13所示，该装置可以包括：通信模块1301；通信模块，用于向第一通信节点发送资源使用信息；该资源使用信息包括至少一个传输机会和RAO，资源使用信息用于指示第一通信节点确定传输机会的可用性。
示例性地，上述RAO包括以下至少之一：
所有传输机会的序号相同，且基于一个序号值指示所有传输机会；初传传输机会集合和每个重传传输机会集合分别对应各自的序号值；不同传输机会分别对应各自的序号值；多个传输机会的序号值按照时间先后顺序正序排列，其中，序号值的初始值为0或指示值X，X为大于或等于0的整数；多个传输机会的序号值按照时间先后顺序倒序排列，其中，序号值的初始值为N或指示值Y，N和Y为大于0的整数。
在一种示例中，RAO包括以下之一：
在序号值小于2的情况下，若序号值为0，表示序号值指示当前传输机会满足信道使用条件即可使用，若序号值为1，表示序号值指示当前传输机会可使用的条件至少包括第一通信节点侦听到其他通信节点释放当前传输机会对应的资源；在序号值大于1的情况下，若序号值为0，表示序号指指示当前传输机会满足信道使用条件即可使用，若序号值为k，表示序号值指示当前传输机会可使用的条件至少包括第一通信节点侦听到序号值为k-1对应的其他通信节点释放当前传输机会对应的资源，其中，k为大于0的整数。
本实施例提供的资源指示装置用于实现图10所示实施例的资源指示方法，其实现原理和技术效果类似，此处不再赘述。
图14为一实施例提供的一种通信节点的结构示意图，如图14所示，该节点包括处理器1401和存储器1402；节点中处理器1401的数量可以是一个或多个，图14中以一个处理器1401为例；节点中的处理器1401和存储器1402可以通过总线或其他方式连接，图14中以通过总线连接为例。
存储器1402作为一种计算机可读存储介质，可用于存储软件程序、计算机可执行程序以及模块，如本申请图1实施例中的资源指示方法对应的程序指令/模块(例如，图10-图13任一实施例所提供的资源指示装置中的各模块)。处理器1401通过运行存储在存储器1402中的软件程序、指令以及模块实现上述的资源指示方法。
存储器1402可主要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机顶盒的 使用所创建的数据等。此外，存储器1402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。
在一种示例中，在可能的情况下，上述节点中的处理器也可以通过其内部的逻辑电路、门电路等硬件电路实现上述的资源指示方法。
本申请实施例还提供了一种可读写存储介质，用于计算机存储，该存储介质存储有一个或者多个程序，一个或者多个程序可被一个或者多个处理器执行，以执行上述实施例中的资源指示方法。
本领域普通技术人员可以理解，上文中所公开方法中的全部或一些步骤、设备中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。
在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由多个物理组件合作执行。一些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于随机存取存储器(Random Access Memory，RAM)、只读存储器(Read-Only Memory，ROM)、带电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、闪存或其他存储器技术、光盘只读存储器(Compact Disc Read-Only Memory，CD-ROM)、数字多功能盘(Digital Versatile Disc，DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。

Claims (32)

  1. 一种资源指示方法，包括：
    第一通信节点接收资源使用信息；
    其中，所述资源使用信息包括至少一个传输机会的资源位置信息和所述传输机会的资源使用序号RAO，或者，待使用资源集合；
    所述第一通信节点根据所述资源使用信息确定传输机会的可用性。
  2. 根据权利要求1所述的方法，其中，所述第一通信节点根据所述资源使用信息确定传输机会的可用性，包括：
    所述第一通信节点在所述至少一个传输机会中选择与所述RAO对应的传输机会；
    所述第一通信节点确定选择的传输机会的可用性为可用或不可用。
  3. 根据权利要求1所述的方法，其中，所述第一通信节点根据所述资源使用信息确定传输机会的可用性，包括：
    所述第一通信节点监听信道获取监听结果；
    所述第一通信节点根据所述监听结果确定所述待使用资源集合中的传输机会的可用性。
  4. 根据权利要求2所述的方法，其中，所述RAO满足以下至少之一：
    所有传输机会的序号相同，且基于一个序号值指示所有传输机会；
    初传传输机会集合和每个重传传输机会集合分别对应各自的序号值；
    不同传输机会分别对应各自的序号值；
    多个传输机会的序号值按照时间先后顺序正序排列，其中，序号值的初始值为0或指示值X，X为大于或等于0的整数；
    多个传输机会的序号值按照时间先后顺序倒序排列，其中，序号值的初始值为N或指示值Y，N和Y均为大于0的整数；
    RAO序号值越小，优先级越高。
  5. 根据权利要求2所述的方法，其中，所述RAO包括以下之一：
    在序号值小于2的情况下，若所述传输机会所对应资源的序号值为0，表示所述序号值指示当前传输机会满足信道使用条件即可使用，若所述传输机会所对应资源的序号值为1，表示所述序号值指示当前传输机会可使用的条件至少包括所述第一通信节点侦听到其他通信节点释放所述当前传输机会对应的资源；
    在序号值大于1的情况下，所述传输机会所对应资源的序号值为0，表示所 述序号值指示当前传输机会满足信道使用条件即可使用，所述传输机会所对应资源的序号值为k，表示所述序号值指示当前传输机会可使用的条件至少包括所述第一通信节点侦听到序号值为k-1对应的其他通信节点释放所述当前传输机会对应的资源，其中，k为大于0的整数。
  6. 根据权利要求3所述的方法，其中，所述第一通信节点根据所述监听结果确定所述待使用资源集合中的传输机会的可用性，包括以下至少之一：
    在所述监听结果满足第一条件的情况下，所述第一通信节点确定所述传输机会可用；
    在所述监听结果不满足第一条件的情况下，所述第一通信节点确定所述传输机会不可用。
  7. 根据权利要求6所述的方法，其中，所述第一条件包括：
    在确定的一个传输机会之前，所述第一通信节点先听后说LBT成功，所述一个传输机会为可用传输机会；或者，
    所述第一通信节点在确定的一个传输机会之前传输数据，传输数据的传输机会在剩余信道占用时长COT内，且所述确定的一个传输机会与所述传输数据的传输机会之间的时间间隔小于门限值，所述一个传输机会为可用传输机会；或者，
    在确定的一个传输机会之前，所述第一通信节点监听到其他通信节点发送的COT信息，所述COT信息满足使用条件，所述确定的一个传输机会与监听到COT信息的传输时隙相邻，并且时间间隔小于门限值，所述一个传输机会为可用传输机会。
  8. 根据权利要求7所述的方法，其中，所述COT信息满足的使用条件包括其他通信节点发送的通告信号强度大于强度门限值；或者，
    所述COT信息满足的使用条件包括信道优先级不低于其他指示共享COT的通信节点所指示的信道优先级；或者，
    所述COT信息满足的使用条件包括其他通信节点发送的通告信号强度大于强度门限值，且信道优先级不低于其他指示共享COT的通信节点所指示的信道优先级。
  9. 根据权利2或6所述的方法，还包括：
    在所述第一通信节点确定所述传输机会不可用的情况下，所述第一通信节点发送指示信令指示当前传输机会不可用。
  10. 根据权利要求1所述的方法，其中，所述传输机会包括初传传输机会 和重传传输机会中的至少之一。
  11. 根据权利要求1所述的方法，还包括：
    所述第一通信节点在可用的传输机会上发送边链路通信信号；
    其中，所述边链路通信信号用于指示边链路资源释放序号SRO或资源使用信息中除所述可用的传输机会之外的传输机会对应的资源的边链路资源使用序号SAO。
  12. 根据权利要求11所述的方法，其中，所述边链路通信信号中的边链路控制信息SCI指示所述SRO或指示所述SAO。
  13. 根据权利要求12所述的方法，其中，所述SCI指示所述SRO或指示所述SAO，包括以下至少之一：
    在SCI中的SAO域指示；
    在SCI中的SRO域指示；
    指示资源选择模式，所述资源选择模式中隐含指示SAO或SRO；
    1比特标识位指示；
    SCI隐含指示SAO为0或SRO为1；
    基于2 nd-stage SCI format指示。
  14. 根据权利要求11所述的方法，其中，所述SAO根据所述资源使用信息中的RAO确定。
  15. 根据权利要求14所述的方法，其中，所述SAO值等于RAO值。
  16. 根据权利要求11所述的方法，其中，所述SRO根据所述资源使用信息中的RAO确定。
  17. 根据权利要求16所述的方法，其中，所述SRO值等于RAO值+1。
  18. 根据权利要求12-15任一项所述的方法，其中，所述SAO包括以下至少之一：
    在序号值小于2的情况下，序号值为0，SCI指示的传输机会对应的SAO为0，序号值为1，SCI指示的传输机会对应的SAO为1；
    在序号值大于1的情况下，序号值为0，SCI指示的传输机会对应的SAO为0，序号值为k，SCI指示的传输机会对应的SAO为k，其中，k为大于0的整数。
  19. 根据权利要求12-17任一项所述的方法，其中，所述SRO包括以下至 少之一：
    在序号值小于2的情况下，序号值为0，SCI指示的传输机会对应的SRO为0，序号值为1，SCI指示的传输机会对应的SRO为1；
    在序号值大于1的情况下，序号值为0，SCI指示的传输机会对应的SRO为0，序号值为k，SCI指示的传输机会对应的SRO为k，其中，k为大于0的整数。
  20. 一种资源指示方法，包括：
    第二通信节点将获取的至少一个资源作为传输机会；
    所述第二通信节点侦听其他通信节点发送的边链路控制信息SCI；
    所述第二通信节点根据所述SCI确定所述传输机会的可用性。
  21. 根据权利要求20所述的方法，其中，所述第二通信节点根据所述SCI确定所述传输机会的可用性，至少包括以下之一：
    所述第二通信节点确定在第二条件被满足的情况下，确定所述传输机会可用；
    所述第二通信节点确定在第二条件不被满足的情况下，确定所述传输机会不可用。
  22. 根据权利要求21所述的方法，其中，所述第二条件包括以下至少之一：
    所述第二通信节点满足信道使用条件；
    所述传输机会对应的资源使用序号RAO等级最高；
    所述传输机会对应的RAO等级为k，且所述第二通信节点成功侦听其他通信节点发送的SCI指示的边链路资源使用序号SAO为k-1；
    所述传输机会对应的RAO等级为k，且所述第二通信节点成功侦听其他通信节点发送的SCI指示的边链路资源释放序号SRO为k。
  23. 根据权利要求20-22任一项所述的方法，还包括：
    所述第二通信节点确定所述传输机会可用，所述第二通信节点进行边链路通信；或者，
    所述第二通信节点确定所述传输机会不可用，所述第二通信节点发送指示信息。
  24. 根据权利要求23所述的方法，其中，所述第二通信节点进行边链路通信，包括以下至少之一：
    在当前传输机会对应的资源上发送物理信道或物理信号的通信信息；
    确定第一个可用资源为初传资源，确定其他可用资源为重传资源；
    在当前传输机会对应的资源上发送SCI，指示所述SRO或指示所述SAO。
  25. 根据权利要求24所述的方法，其中，所述SCI指示所述SRO或指示所述SAO，包括以下至少之一：
    在SCI中的SAO域指示；
    在SCI中的SRO域指示；
    指示资源选择模式，所述资源选择模式中隐含指示SAO或SRO；
    1比特标识位指示；
    SCI隐含指示SAO为0或SRO为1；
    基于2 nd-stage SCI format指示。
  26. 根据权利要求22所述的方法，其中，所述第二通信节点满足信道使用条件包括：
    在确定的一个传输机会之前，所述第二通信节点先听后说LBT成功；或者，
    所述第二通信节点在确定的一个传输机会之前传输数据，传输数据的传输机会在剩余信道占用时长COT内，且所述确定的一个传输机会与所述传输数据的传输机会之间的时间间隔小于门限值；或者，
    在确定的一个传输机会之前，所述第二通信节点监听到其他通信节点发送的COT信息，所述COT信息满足使用条件，所述确定的一个传输机会与监听到COT信息的传输时隙相邻，并且时间间隔小于门限值。
  27. 根据权利要求23所述的方法，其中，所述第二通信节点发送指示信息，包括以下至少之一：
    发送高层信令，所述高层信令指示当前传输机会不可用，触发资源重选；
    丢弃当前传输机会，并发送高层信令；
    丢弃当前传输机会，并向第三通信节点发送指示信息。
  28. 一种资源指示方法，包括：
    第三通信节点向第一通信节点发送资源使用信息；
    所述资源使用信息包括至少一个传输机会和资源使用序号RAO，所述资源使用信息用于指示所述第一通信节点确定所述传输机会的可用性。
  29. 根据权利要求28所述的方法，其中，所述RAO包括以下至少之一：
    所有传输机会的序号相同，且基于一个序号值指示所有传输机会；
    初传传输机会集合和每个重传传输机会集合分别对应各自的序号值；
    不同传输机会分别对应各自的序号值；
    多个传输机会的序号值按照时间先后顺序正序排列，其中，序号值的初始值为0或指示值X，X为大于或等于0的整数；
    多个传输机会的序号值按照时间先后顺序倒序排列，其中，序号值的初始值为N或指示值Y，N和Y均为大于0的整数。
  30. 根据权利要求28所述的方法，其中，所述RAO包括以下之一：
    在序号值小于2的情况下，序号值为0，表示所述序号值指示当前传输机会满足信道使用条件即可使用，序号值为1，表示所述序号值指示当前传输机会可使用的条件至少包括所述第一通信节点侦听到其他通信节点释放所述当前传输机会对应的资源；
    在序号值大于1的情况下，序号值为0，表示所述序号指指示当前传输机会满足信道使用条件即可使用，序号值为k，表示所述序号值指示当前传输机会可使用的条件至少包括所述第一通信节点侦听到序号值为k-1对应的其他通信节点释放所述当前传输机会对应的资源，其中，k为大于0的整数。
  31. 一种通信节点，包括：处理器，所述处理器执行计算机程序时，实现如权利要求1-19任一项所述的资源指示方法，或如权利要求20-27任一项所述的资源指示方法，或如权利要求28-30任一项所述的资源指示方法。
  32. 一种可读写存储介质，所述可读写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如权利要求1-19任一项所述的资源指示方法，或如权利要求20-27任一项所述的资源指示方法，或如权利要求28-30任一项所述的资源指示方法。
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CN111934835A (zh) * 2020-08-06 2020-11-13 中兴通讯股份有限公司 一种资源选择、指示方法、装置、终端和存储介质

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