WO2025065663A1 - 通信方法、第一终端、第二终端以及通信系统 - Google Patents

通信方法、第一终端、第二终端以及通信系统 Download PDF

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Publication number
WO2025065663A1
WO2025065663A1 PCT/CN2023/122974 CN2023122974W WO2025065663A1 WO 2025065663 A1 WO2025065663 A1 WO 2025065663A1 CN 2023122974 W CN2023122974 W CN 2023122974W WO 2025065663 A1 WO2025065663 A1 WO 2025065663A1
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WO
WIPO (PCT)
Prior art keywords
terminal
pssch
resource
psfch
retransmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/122974
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English (en)
French (fr)
Inventor
赵文素
赵群
赵力
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2023/122974 priority Critical patent/WO2025065663A1/zh
Priority to CN202380011507.4A priority patent/CN117546432A/zh
Publication of WO2025065663A1 publication Critical patent/WO2025065663A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a communication method, a first terminal, a second terminal, and a communication system.
  • PSSCH Physical Sidelink Share Channel
  • PSFCH Physical Sidelink Feedback Channel
  • the embodiments of the present disclosure provide a communication method, a first terminal, a second terminal, and a communication system.
  • a communication method comprising: a first terminal sends a physical direct link shared channel PSSCH to a second terminal, the PSSCH corresponding to N physical direct link feedback channel PSFCH opportunities, N being an integer greater than or equal to 1; according to a first resource selected by the first terminal, determining whether to use the first resource to retransmit the PSSCH; the first resource is used for the PSSCH retransmission.
  • a communication method comprising: a second terminal receives a physical direct link shared channel PSSCH sent by a first terminal; the second terminal receives the PSSCH on which the first terminal determines whether to use a first resource to retransmit the PSSCH; wherein the first resource is used for retransmission of the PSSCH; the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, N being an integer greater than or equal to 1.
  • a communication method comprising: a first terminal sends a physical direct link shared channel PSSCH to a second terminal, the PSSCH corresponding to N physical direct link feedback channel PSFCH opportunities, N being an integer greater than or equal to 1; the second terminal receives the physical direct link shared channel PSSCH sent by the first terminal; the first terminal determines whether to use the first resource to retransmit the PSSCH according to a selected first resource; wherein the first resource is used for the PSSCH retransmission.
  • a first terminal comprising: a transceiver module, sending a physical direct link shared channel PSSCH to a second terminal, the PSSCH corresponding to N physical direct link feedback channel PSFCH opportunities, N being an integer greater than or equal to 1; a processing module, for determining whether to use the first resource to retransmit the PSSCH according to a first resource selected by the first terminal; wherein the first resource is used for retransmission of the PSSCH.
  • a second terminal comprising: a transceiver module, used to receive a physical direct link shared channel PSSCH sent by a first terminal, and receive the PSSCH of the first terminal whether to use a first resource to retransmit the PSSCH; wherein the first resource is used for the PSSCH retransmission; the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, and N is an integer greater than or equal to 1.
  • a first terminal comprising: one or more processors; wherein the processor is used to execute the communication method of the first aspect.
  • a second terminal comprising: one or more processors; wherein the processor is used to execute the communication method of the second aspect.
  • a communication system including a first terminal and a second terminal, wherein the first terminal is configured to implement the communication method of the first aspect, and the second terminal is configured to implement the communication method of the second aspect.
  • a storage medium stores instructions, and wherein when the instructions are executed on a communication device, the communication device executes the communication method of any one of the first aspect and the second aspect.
  • terminal behaviors are specified, thereby avoiding performance impact due to unclear terminal behaviors.
  • FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.
  • FIG. 2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.
  • FIG. 2B is a schematic diagram showing a first resource selection according to an embodiment of the present disclosure.
  • FIG. 2C is a schematic diagram showing other resource selection according to an embodiment of the present disclosure.
  • FIG. 3A is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG3C is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG4A is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG4B is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG. 5 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.
  • FIG. 6A is a schematic diagram of the structure of a first terminal proposed in an embodiment of the present disclosure.
  • FIG. 6B is a schematic diagram of the structure of the second terminal proposed in an embodiment of the present disclosure.
  • FIG. 7A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure.
  • FIG. 7B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a communication method, a first terminal, a second terminal, and a communication system.
  • an embodiment of the present disclosure proposes that a first terminal sends a physical direct link shared channel PSSCH to a second terminal, where the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, where N is an integer greater than or equal to 1; according to a first resource selected by the first terminal, determine whether to use the first resource to retransmit the PSSCH; and the first resource is used for retransmission of the PSSCH.
  • the first terminal sends a physical direct link shared channel PSSCH to the second terminal, the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, and N is an integer greater than or equal to 1; the first terminal performs a first behavior on a selected first resource; wherein the first behavior is whether to use the first resource to retransmit the PSSCH; wherein the first resource is used for PSSCH retransmission.
  • the first terminal determines that at least one of the following is satisfied: there is a first resource between the Xth PSFCH opportunity and the X+1th PSFCH opportunity; at the 1st PSFCH opportunity to the Xth PSFCH opportunity, the hybrid automatic repeat request HARQ information of the PSSCH transmission result sent by the second terminal is not received, wherein X is an integer greater than or equal to 1 and less than N.
  • the first behavior is an behavior of retransmitting the PSSCH using the first resource.
  • the first behavior is a behavior of not using the first resource to retransmit the PSSCH.
  • the first resource when a first condition is met, the first resource is not used for retransmission of the PSSCH; the first condition includes that the value of X is less than a threshold.
  • the scenario in which the first terminal does not use the first resource for retransmission is clarified, thereby clarifying the behavior of the terminal when one PSCCH corresponds to multiple PSFCH opportunities, thereby avoiding degradation of communication performance due to unclear terminal behavior.
  • the threshold is determined in at least one of the following ways: based on pre-configuration information of a resource pool; based on pre-configuration information of a resource set RB set; based on pre-configuration information of a bandwidth part BWP; or based on a predefined rule.
  • the first resource when the first condition is not met, is used to retransmit the PSSCH.
  • the scenario in which the first terminal uses the first resource for retransmission is clarified, thereby clarifying the behavior of the terminal when one PSCCH corresponds to multiple PSFCH opportunities, thereby avoiding degradation of communication performance due to unclear terminal behavior.
  • the time interval between any two resources selected by the first terminal for a transport block TB transmitted on the PSSCH is greater than or equal to a minimum time interval.
  • the minimum time interval is determined based on the first PSFCH opportunity corresponding to the PSSCH.
  • an embodiment of the present disclosure proposes that a second terminal receives a physical direct link shared channel PSSCH sent by a first terminal; the second terminal receives the PSSCH on which the first terminal determines whether to use a first resource to retransmit the PSSCH; wherein the first resource is used for the PSSCH retransmission; the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, where N is an integer greater than or equal to 1.
  • the second terminal receives the physical direct link sharing information sent by the first terminal.
  • the second terminal receives the PSSCH retransmitted by the first terminal by executing the first behavior; wherein the first behavior is whether to use the first resource to retransmit the PSSCH; wherein the first resource is used for the PSSCH retransmission;
  • the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, and N is an integer greater than or equal to 1.
  • the method also includes: the second terminal performs channel monitoring on N physical direct link feedback channel PSFCH opportunities corresponding to the PSSCH; sends hybrid automatic repeat request HARQ information for the PSSCH transmission result on the earliest PSFCH occasion in which the channel monitoring is successful; wherein, from the 1st PSFCH opportunity to the Xth PSFCH opportunity, the second terminal does not send HARQ information to the first terminal; wherein X is an integer greater than or equal to 1 and less than N.
  • the first behavior is an behavior of retransmitting the PSSCH using the first resource.
  • the first behavior is a behavior of not using the first resource for PSSCH retransmission.
  • the first resource when a first condition is met, the first resource is not used to receive the PSSCH retransmitted by the first terminal; the first condition includes that the value of X is less than a threshold.
  • the threshold is determined in at least one of the following ways: based on pre-configuration information of a resource pool; based on pre-configuration information of a resource set RB set; based on pre-configuration information of a bandwidth part BWP; or based on predefined rules.
  • the method further includes:
  • the PSSCH retransmitted by the first terminal is received using the first resource.
  • the time interval between any two resources selected by the first terminal for a transport block TB transmitted on the PSSCH is greater than or equal to a minimum time interval.
  • the minimum time interval is determined based on the first PSFCH opportunity corresponding to the PSSCH.
  • an embodiment of the present disclosure proposes a communication method, which includes: a first terminal sends a physical direct link shared channel PSSCH to a second terminal, where the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, and N is an integer greater than or equal to 1; the second terminal receives the physical direct link shared channel PSSCH sent by the first terminal; the first terminal performs a first behavior on a selected first resource; wherein the first behavior is whether to use the first resource to retransmit the PSSCH; wherein the first resource is used for the PSSCH retransmission.
  • an embodiment of the present disclosure proposes a first terminal, comprising: a transceiver module, sending a physical direct link shared channel PSSCH to a second terminal, the PSSCH corresponding to N physical direct link feedback channel PSFCH opportunities, N being an integer greater than or equal to 1; a processing module, for determining whether to use the first resource to retransmit the PSSCH according to a first resource selected by the first terminal; wherein the first resource is used for retransmission of the PSSCH.
  • an embodiment of the present disclosure proposes a second terminal, comprising: a transceiver module, used to receive a physical direct link shared channel PSSCH sent by a first terminal, and receive the PSSCH of the first terminal to determine whether to use a first resource to retransmit the PSSCH; wherein the first resource is used for retransmission of the PSSCH; the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, and N is an integer greater than or equal to 1.
  • an embodiment of the present disclosure proposes a first terminal, comprising: one or more processors; wherein the processor is used to execute the communication method of the first aspect.
  • an embodiment of the present disclosure proposes a second terminal, comprising: one or more processors; wherein the processor is used to execute the communication method of the second aspect.
  • an embodiment of the present disclosure proposes a communication system, comprising: a first terminal and a network device, wherein the first terminal is configured to implement the communication method of the first aspect, and the second terminal is configured to implement the communication method of the second aspect.
  • an embodiment of the present disclosure proposes a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute any one of the communication methods of the first aspect and the second aspect.
  • the embodiments of the present disclosure provide a communication method, a first terminal, a second terminal, and a communication system.
  • the terms such as communication method, information processing method, and data processing method can be replaced with each other, the terms such as communication device, information processing device, and data processing can be replaced with each other, and the terms such as information processing system and communication system can be replaced with each other.
  • each step in an embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged.
  • the optional implementation methods in a certain embodiment can be arbitrarily combined.
  • the embodiments can be arbitrarily combined. For example, part or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • elements expressed in the singular form such as “a”, “an”, “the”, “above”, “said”, “aforementioned”, “this”, etc., may mean “one and only one", or “one or more”, “at least one”, etc.
  • the noun after the article may be understood as a singular expression or a plural expression.
  • plurality refers to two or more.
  • the terms "at least one of”, “one or more”, “a plurality of”, “multiple”, etc. can be used interchangeably.
  • "at least one of A and B", “A and/or B", “A in one case, B in another case”, “in response to one case A, in response to another case B”, etc. may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.
  • the recording method of "A or B” may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed).
  • A A is executed independently of B
  • B B is executed independently of A
  • execution is selected from A and B (A and B are selectively executed).
  • prefixes such as “first” and “second” in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects.
  • the statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes.
  • the description object is a "field”
  • the ordinal number before the "field” in the "first field” and the "second field” does not limit the position or order between the "fields”
  • the "first” and “second” do not limit whether the "fields” they modify are in the same message, nor do they limit the order of the "first field” and the "second field”.
  • the description object is a "level”
  • the ordinal number before the "level” in the “first level” and the “second level” does not limit the priority between the "levels”.
  • the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device” as an example, the number of "devices” can be one or more.
  • the objects modified by different prefixes may be the same or different. For example, if the description object is "device”, then the “first device” and the “second device” may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information”, then the "first information” and the “second information” may be the same information or different information, and their contents may be the same or different.
  • “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • time/frequency refers to the time domain and/or the frequency domain.
  • terms such as “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not lower than”, and “above” can be replaced with each other, and terms such as “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “no more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments.
  • Terms such as “device”, “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.
  • network may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).
  • the terms “macro cell”, “small cell”, “femto cell”, “pico cell”, “sector”, “cell group”, “serving cell”, “carrier”, “component carrier”, and “bandwidth part (BWP)” may be used interchangeably.
  • terminal In some embodiments, the terms "terminal”, “terminal device”, “user equipment (UE)”, “user terminal” “mobile station (MS)”, “mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client and the like can be used interchangeably.
  • the access network device, the core network device, or the network device can be replaced by a terminal.
  • the various embodiments of the present disclosure can also be applied to a structure in which the access network device, the core network device, or the network device and the communication between the terminals is replaced by the communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.).
  • D2D device-to-device
  • V2X vehicle-to-everything
  • it can also be set as a structure in which the terminal has all or part of the functions of the access network device.
  • terms such as "uplink” and "downlink” can also be replaced by terms corresponding to communication between terminals (for example, "side”).
  • uplink channels, downlink channels, etc. can be replaced by side channels
  • uplinks, downlinks, etc. can be replaced by side links.
  • the terminal may be replaced by an access network device, a core network device, or a network device.
  • the access network device, the core network device, or the network device may also be configured to have a structure that has all or part of the functions of the terminal.
  • acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.
  • FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • a communication system 100 includes a first terminal 101 and a second terminal 102 .
  • the first terminal 101 and the second terminal 102 include, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), and at least one of a wireless terminal device in a smart home (smart home), but are not limited to these.
  • a mobile phone a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR)
  • the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure.
  • a person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.
  • the following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto.
  • the subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • SUPER 3G IMT-Advanced
  • 4th generation mobile communication system 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • 5G new radio NR
  • future radio access FX
  • new radio access technology RAT
  • new radio NR
  • new radio access NX
  • future generation radio access FX
  • GSM Global System for Mobile communications
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra-WideBand (UWB), Bluetooth (registered trademark)
  • Public Land Mobile Network PLMN) network
  • D2D Device-to-Device
  • M2M Machine-to-Machine
  • IoT Vehicle-to-Everything
  • V2X Vehicle-to-Everything
  • one physical sidelink shared channel corresponds to only one physical sidelink feedback channel (PSFCH) occasion.
  • a minimum time interval must be met between any two resources selected for this TB.
  • the minimum time interval may be a+b.
  • the time represented by "a” is: the time interval between the end position of the first symbol and the start position of the second symbol.
  • the first symbol is the last symbol in the resource transmitted by PSSCH.
  • the second symbol is the first symbol received at the PSFCH opportunity corresponding to the PSSCH transmission resource. That is, the time interval between the last symbol of PSSCH and the first symbol of the first PSFCH occasion corresponding to the PSSCH.
  • “b” is the time required for PSFCH reception and processing and side chain retransmission preparation.
  • "b” may include at least one of the following: necessary multiplexing of physical channels and any time for switching between sending to receiving (TX-RX), or receiving to sending (RX-TX).
  • 1 PSCCH in the sidelink unlicensed frequency band, 1 PSCCH may correspond to N PSFCH opportunities, where N is an integer greater than or equal to 1.
  • the selected retransmission resource will be located between the first PSFCH occasion and the last PSFCH occasion.
  • the physical layer has not yet reported HARQ information in the PSFCH occasion, but the selected retransmission resource has arrived.
  • the upper layer of the transmitting terminal cannot determine whether to use the retransmission resource for retransmission.
  • FIG2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a communication method, and the method includes:
  • Step S2101 the first terminal 101 sends PSSCH to the second terminal 102.
  • the second terminal 102 receives a physical sidelink control channel (PSSCH).
  • PSSCH physical sidelink control channel
  • the second terminal 102 receives the PSSCH sent from the first terminal 101.
  • obtain can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.
  • the first terminal 101 sends a PSSCH to the second terminal 102 .
  • PSSCH corresponds to N physical sidelink feedback channel (PSFCH) occasions, where N is an integer greater than or equal to 1.
  • PSFCH physical sidelink feedback channel
  • Step S2102 the first terminal 101 selects a first resource.
  • the first resource is used for PSSCH retransmission.
  • the first resource satisfies at least one of the following: the first resource exists between the Xth PSFCH opportunity and the X+1th PSFCH opportunity; the hybrid automatic repeat request HARQ information of the PSSCH transmission result sent by the second terminal is not received at the 1st to the Xth PSFCH opportunities, where X is an integer greater than or equal to 1 and less than N.
  • the first resource is a retransmission resource that satisfies a minimum time interval.
  • the time interval between the first resource and the PSSCH is greater than or equal to a minimum time interval.
  • the minimum time interval is determined based on the first PSFCH opportunity corresponding to the PSSCH.
  • the minimum time interval corresponds to at least one of the following:
  • the definition of the minimum time interval may refer to the minimum time interval defined in the above embodiments, such as "a+b", which will not be repeated here.
  • the terminal 101 selects any two transport blocks (TBs) for transmission on the PSSCH.
  • the time interval between resources is greater than or equal to the minimum time interval.
  • Step S2103 The first terminal 101 executes a first behavior on the selected first resource.
  • the first behavior is whether to use the first resource to retransmit the PSSCH.
  • the first terminal 101 performing the first behavior on the selected first resource can be understood as the first terminal 101 determining whether to use the first resource to retransmit the PSSCH according to the first resource selected by the first terminal.
  • the first behavior includes at least one of the following:
  • An act of retransmitting the PSSCH using the first resource and an act of retransmitting the PSSCH without using the first resource.
  • the first terminal 101 may retransmit the PSSCH using the first resource on the selected first resource, or may not retransmit the PSSCH using the first resource.
  • the first terminal 101 when the first condition is not met, the first terminal 101 retransmits the PSSCH using the first resource.
  • the first condition includes that the value of X is less than a threshold.
  • the threshold is determined in at least one of the following ways:
  • BWP Bandwidth Part
  • the first terminal 101 retransmits the PSSCH on the selected first resource using the first resource.
  • FIG2B is a schematic diagram of the first resource selection according to an embodiment of the present disclosure.
  • the period of the PSFCH opportunity is 4 time slots (slots), when 1 PSSCH corresponds to 3 PSFCH opportunities (that is, the PSFCH occasion corresponding to slot 3, the PSFCH occasion corresponding to slot 7, and the PSFCH occasion corresponding to slot 11).
  • the minimum time interval "a+b" is 5 slots.
  • the corresponding selected retransmission resources are the retransmission resources corresponding to slot 5, the retransmission resources corresponding to slot 10, and the retransmission resources corresponding to slot 15.
  • the retransmission resource corresponding to slot5 is located between the PSFCH occasion corresponding to slot3 and the PSFCH occasion corresponding to slot7.
  • the first terminal 101 does not receive HARQ information on the PSFCH occasion corresponding to slot3, and when waiting for the retransmission resource corresponding to slot5 to arrive, the first terminal 101 can retransmit based on the retransmission resource corresponding to slot5.
  • slot5 in this case can be understood as the first resource.
  • PSFCH physical resource block (PRB) set 1 is a PRB set associated with the PSFCH occasion corresponding to slot 3. That is, the frequency domain resources of the first PSFCH occasion are determined in the PRB set.
  • PSFCH PRB set 2 is a PRB set associated with the PSFCH occasion corresponding to slot 7. That is, the frequency domain resources of the second PSFCH occasion are determined in the PRB set.
  • PSFCH PRB set 3 is a PRB set associated with the PSFCH occasion corresponding to slot 11. That is, the frequency domain resources of the third PSFCH occasion are determined in the PRB set.
  • frame radio frame
  • subframe slot
  • sub-slot sub-slot
  • mini-slot mini-slot
  • sub-slot sub-slot
  • mini-slot mini-slot
  • the first terminal 101 does not retransmit the PSSCH using the first resource on the selected first resource.
  • the first terminal 101 does not receive HARQ information on the PSFCH occasion corresponding to slot 3, and does not use slot 5 to perform retransmission on PSSCH while waiting for the retransmission resources corresponding to slot 5 to arrive.
  • the PSSCH when the first condition is met, the PSSCH is not retransmitted using the first resource.
  • the first terminal 101 does not use the first resource to retransmit the PSSCH on the selected first resource, but uses the retransmission resource whose time domain resource is located after receiving the negative acknowledgment (NACK) information to retransmit.
  • NACK negative acknowledgment
  • FIG2C is a schematic diagram of other resource selections according to an embodiment of the present disclosure.
  • the period of the PSFCH opportunity is 4 time slots (slots), when 1 PSSCH corresponds to 3 PSFCH opportunities (i.e., the PSFCH occasion corresponding to slot 3, the PSFCH occasion corresponding to slot 7, and the PSFCH occasion corresponding to slot 11).
  • the minimum time interval "a+b" is 5 slots.
  • the corresponding selected retransmission resources are the retransmission resources corresponding to slot 5, the retransmission resources corresponding to slot 10, and the retransmission resources corresponding to slot 15.
  • the retransmission resource corresponding to slot5 is located between the PSFCH occasion corresponding to slot3 and the PSFCH occasion corresponding to slot7.
  • the first terminal 101 does not receive HARQ information on the PSFCH occasion corresponding to slot3, and when the retransmission resource corresponding to slot5 is obtained, the first terminal 101 does not retransmit based on the retransmission resource corresponding to slot5.
  • slot5 in this case can be understood as the first resource.
  • the first terminal 101 will continue to monitor the second PSFCH occasion.
  • the first terminal 101 Terminal 101 When the first terminal 101 receives NACK on the PSFCH occasion corresponding to slot7, the first terminal 101 Terminal 101 will not continue to monitor the PSFCH occasion corresponding to slot 11, and report NACK to the higher layer at the PSFCH occasion corresponding to slot 7, and the higher layer will perform retransmission.
  • the upper layer will use the retransmission resource located in slot 10 to perform retransmission.
  • Step S2104 The first terminal 101 sends HARQ information based on executing the first behavior.
  • the first terminal 101 sends HARQ to the second terminal 102 based on performing the first behavior.
  • the second terminal 102 receives the HARQ sent based on performing the first behavior.
  • the second terminal 102 is based on the HARQ sent by the first terminal 101 by performing the first behavior.
  • the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as “information”, “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “command”, “channel”, “parameter”, “domain”, “field”, “symbol”, “symbol”, “code element”, “codebook”, “codeword”, “codepoint”, “bit”, “data”, “program”, and “chip” can be used interchangeably.
  • PSSCH data
  • TB transport block PB transport block
  • PSSCH data etc.
  • retransmitting the PSSCH may refer to retransmitting data of the first terminal, or may refer to retransmitting the TB transmitted on the PSSCH.
  • terms such as “uplink”, “uplink”, “physical uplink” can be interchangeable, and terms such as “downlink”, “downlink”, “physical downlink” can be interchangeable, and terms such as “side”, “sidelink”, “side communication”, “sidelink communication”, “direct connection”, “direct link”, “direct communication”, “direct link communication” can be interchangeable.
  • terms such as “moment”, “time point”, “time”, and “time position” can be interchangeable, and terms such as “duration”, “period”, “time window”, “window”, and “time” can be interchangeable.
  • RB resource block
  • PRB physical resource block
  • SCG resource element group
  • REG resource element group
  • PRB pair RB pair
  • RE resource element
  • terms such as “certain”, “preset”, “preset”, “set”, “indicated”, “some”, “any”, and “first” can be interchangeable, and "specific A”, “preset A”, “preset A”, “set A”, “indicated A”, “some A”, “any A”, and “first A” can be interpreted as A pre-defined in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., and can also be interpreted as specific A, some A, any A, or first A, etc., but is not limited to this.
  • the determination or judgment can be performed by a value represented by 1 bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited to this.
  • not expecting to receive can be interpreted as not receiving on time domain resources and/or frequency domain resources, or as not performing subsequent processing on the data after receiving the data; "not expecting to send” can be interpreted as not sending, or as sending but not expecting the recipient to respond to the sent content.
  • the communication method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2104.
  • the communication method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2104.
  • step S2102 may be implemented as an independent embodiment
  • step S2103 may be implemented as an independent embodiment
  • step S2102+step S2103 may be implemented as an independent embodiment
  • step S2101+step S2102+step S2103 may be implemented as an independent embodiment, but is not limited thereto.
  • steps S2102 and S2103 may be executed in an interchangeable order or simultaneously.
  • steps S2101, S2102, and S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S2101, S2102, and S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S2101, S2102, and S2103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG3A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the present disclosure embodiment relates to a communication method. The above methods include:
  • Step S3101 Send PSSCH.
  • step S3101 can refer to the optional implementation of step S2101 in Figure 2A, and other related parts of the embodiments involved in Figures 2A, 2B and 2C, which will not be repeated here.
  • Step S3102 Select the first resource.
  • step S3102 can refer to the optional implementation of step S2102 in Figure 2A, and other related parts of the embodiments involved in Figures 2A, 2B and 2C, which will not be repeated here.
  • Step S3103 According to the first resource selected by the first terminal, determine whether to use the first resource to retransmit the PSSCH.
  • step S3103 can refer to the optional implementation of step S2103 in Figure 2A, and other related parts of the embodiments involved in Figures 2A, 2B and 2C, which will not be repeated here.
  • Step S3104 Send HARQ information based on executing the first behavior.
  • step S3104 can refer to the optional implementation of step S2104 in Figure 2A, and other related parts of the embodiments involved in Figures 2A, 2B and 2C, which will not be repeated here.
  • the communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3104.
  • step S3102 may be implemented as an independent embodiment
  • step S3103 may be implemented as an independent embodiment
  • step S3101+S3102 may be implemented as an independent embodiment
  • step S3101+S3103 may be implemented as an independent embodiment
  • step S3102+S3103 may be implemented as an independent embodiment
  • step S3101+S3102+S3103+S3104 may be implemented as an independent embodiment, but is not limited thereto.
  • steps S3102 and S3103 may be executed in an exchanged order or simultaneously. Steps S3102 and S3103 may be executed in an exchanged order or simultaneously.
  • steps S3101, S3103, and S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S3101, S3102, and S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S3101, S3102, and S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the present disclosure embodiment relates to a communication method, and the method includes:
  • Step S3201 Send PSSCH.
  • step S3201 can refer to step S2101 in Figure 2A, the optional implementation of step S3101 in Figure 3A, and other related parts in the embodiments involved in Figures 2A, 2B, 2C, and 3A, which will not be repeated here.
  • Step S3202 Select the first resource.
  • step S3202 can refer to step S2102 of Figure 2A, the optional implementation of step S3102 of Figure 3A, and other related parts in the embodiments involved in Figures 2A, 2B, 2C, and 3A, which will not be repeated here.
  • Step S3203 According to the first resource selected by the first terminal, determine whether to use the first resource to retransmit the PSSCH.
  • step S3203 can refer to steps S2103 and S2104 of Figure 2A, the optional implementation of step S3103 of Figure 3A, and other related parts in the embodiments involved in Figures 2A, 2B, 2C, and 3A, which will not be repeated here.
  • step S3201 can be combined with steps S3102-S3103 of FIG. 3A
  • step S3202 can be combined with steps S3101 and S3103 of FIG. 3A .
  • FIG3C is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3C , the present disclosure embodiment relates to a communication method, and the method includes:
  • Step S3301 Send PSSCH.
  • step S3301 can refer to the optional implementation method of step S2101 in Figure 2A, step S3101 in Figure 3A, step S3201 in Figure 3B, and other related parts in the embodiments involved in Figures 2A, 2B, 2C, 3A, and 3B, which will not be repeated here.
  • Step S3302 According to the first resource selected by the first terminal, determine whether to use the first resource to retransmit the PSSCH.
  • step S3302 can be found in steps S2102, S2103, and S2104 of Figure 2A, steps S3102, S3103, and S3104 of Figure 3A, and the optional implementation methods of steps S3202 and S3203 of Figure 3B, and other related parts of the embodiments involved in Figures 2A, 2B, 2C, 3A, and 3B, which will not be repeated here.
  • the first terminal sends a physical direct link shared channel PSSCH to the second terminal, the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, N is an integer greater than or equal to 1; the first terminal performs a first behavior on the selected first resource; wherein the first behavior is whether to use the first resource to perform retransmission on the PSSCH; wherein the first resource The source is used for the PSSCH retransmission.
  • the terminal determines that at least one of the following is satisfied: there is a first resource between the Xth PSFCH opportunity and the X+1th PSFCH opportunity; at the 1st PSFCH opportunity to the Xth PSFCH opportunity, the hybrid automatic repeat request HARQ information of the PSSCH transmission result sent by the second terminal is not received, where X is an integer greater than or equal to 1 and less than N.
  • the first behavior is a behavior of retransmitting the PSSCH using the first resource.
  • the first behavior is not using the first resource for PSSCH retransmission.
  • the first resource when a first condition is met, the first resource is not used to retransmit the PSSCH; the first condition includes that the value of X is less than a threshold.
  • the threshold is determined in at least one of the following ways: based on pre-configuration information of a resource pool; based on pre-configuration information of a resource set RB set; based on pre-configuration information of a bandwidth part BWP; or based on a predefined rule.
  • the method further includes: when the first condition is not met, retransmitting the PSSCH using the first resource.
  • the time interval between any two resources selected by the terminal for the transport block TB transmitted on the PSSCH is greater than or equal to the minimum time interval.
  • the time interval between the initial transmission resource and the retransmission resource of the TB is greater than or equal to the minimum time interval, or the time interval between the retransmission resource and the retransmission resource is greater than or equal to the minimum time interval.
  • the minimum time interval is determined based on the first PSFCH opportunity corresponding to the PSSCH.
  • FIG4A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the present disclosure embodiment relates to a communication method, and the method includes:
  • Step S4101 receive PSSCH.
  • step S4101 can refer to the optional implementation methods of step S2101 in Figure 2A, step S3101 in Figure 3A, step S3201 in Figure 3B, step S3301 in Figure 3C, and other related parts in the embodiments involved in Figures 2A, 2B, 2C, 3A, 3B and 3C, which will not be repeated here.
  • Step S4102 the receiving terminal 101 performs retransmission of the PSSCH based on whether to use the first resource.
  • step S4102 can refer to the optional implementation method of step S2104 in Figure 2A, step S3104 in Figure 3A, step S3203 in Figure 3B, step S3302 in Figure 3C, and other related parts in the embodiments involved in Figures 2A, 2B, 2C, 3A, 3B and 3C, which will not be repeated here.
  • step S4101 may be implemented as an independent embodiment
  • step S4101 may be implemented as an independent embodiment
  • step S4101+S4102 may be implemented as independent embodiments, but are not limited thereto.
  • steps S4102 and S4101 may be executed in an interchangeable order or simultaneously.
  • step S4101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • step S4102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • step S4101 may be combined with steps S3102-S3103 of FIG. 3A
  • step S4102 may be combined with steps S3101 and S3103 of FIG. 3A .
  • FIG4B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a communication method, and the method includes:
  • Step S4201 receive PSSCH.
  • step S4201 can refer to the optional implementation method of step S2101 in Figure 2A, step S3101 in Figure 3A, step S3201 in Figure 3B, step S3301 in Figure 3C, step S4101 in Figure 4A, and other related parts in the embodiments involved in Figures 2A, 2B, 2C, 3A, 3B, 3C and 4A, which will not be repeated here.
  • the second terminal receives a physical direct link shared channel PSSCH sent by the first terminal; the second terminal receives the PSSCH retransmitted by the first terminal by performing a first behavior; wherein the first behavior is whether to use a first resource to retransmit the PSSCH; wherein the first resource is used for the PSSCH retransmission; the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, and N is an integer greater than or equal to 1.
  • the method further includes: the second terminal performs channel monitoring on the N physical direct link feedback channel PSFCH occasions corresponding to the PSSCH; sends hybrid automatic repeat request HARQ information for the PSSCH transmission result on the earliest PSFCH occasion where the channel monitoring is successful; wherein, from the 1st PSFCH opportunity to the Xth PSFCH opportunity, the second terminal does not send the HARQ information to the first terminal; wherein, X is an integer greater than or equal to 1 and less than N.
  • the first behavior is a behavior of retransmitting the PSSCH using the first resource.
  • the first behavior is not using the first resource for PSSCH retransmission.
  • the first resource when a first condition is met, the first resource is not used to receive the PSSCH retransmitted by the first terminal; the first condition includes that the value of X is less than a threshold.
  • the threshold is determined in at least one of the following ways: based on pre-configuration information of a resource pool; based on pre-configuration information of a resource set RB set; based on pre-configuration information of a bandwidth part BWP; or based on a predefined rule.
  • the PSSCH retransmitted by the first terminal is received using the first resource.
  • the time interval between any two resources selected by the first terminal for the transport block TB transmitted on the PSSCH is greater than or equal to the minimum time interval.
  • the time interval between the initial transmission resource and the retransmission resource of the TB is greater than or equal to the minimum time interval, or the time interval between the retransmission resource and the retransmission resource is greater than or equal to the minimum time interval.
  • the minimum time interval is determined based on the first PSFCH opportunity corresponding to the PSSCH.
  • the minimum time interval is equal to a+b, where the value of a is determined by the first PSFCH opportunity corresponding to the PSSCH, that is, the time interval a is equal to the time interval between the last symbol where the PSSCH is located and the first symbol of the first PSFCH occasion corresponding to the PSSCH.
  • the minimum time interval a+b must be satisfied between any two resources selected for the TB, where a and b are the values, i.e., a is the time interval between the last symbol of the PSSCH and the first symbol of the first PSfch occasion corresponding to the PSSCH, and b is the time required for PSFCH reception and processing and sidechain retransmission preparation, including the necessary multiplexing of physical channels and any TX-RX/RX-TX switching time.
  • a PSSCH supports a total of N PSFCH occasions, N ⁇ 1,2,3,4 ⁇ , and the time interval between any two adjacent PSFCH occasions is the PSFCH cycle.
  • FIG5 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , the present disclosure embodiment relates to a communication method, and the method includes:
  • Step S5101 the first terminal 101 sends PSSCH to the second terminal 102.
  • the second terminal 102 receives the PSSCH.
  • the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, where N is an integer greater than or equal to 1.
  • step S5101 please refer to step S2101 of Figure 2A, step S3101 of Figure 3A, step S3201 of Figure 3B, step S3301 of Figure 3C, step S4101 of Figure 4A, step S4201 of Figure 4B, and other related parts in the embodiments involved in Figures 2A, 2B, 2C, 3A, 3B, 3C, 4A and 4B, which will not be repeated here.
  • Step S5102 The first terminal determines whether to use the first resource to retransmit the PSSCH according to the first resource selected by the first terminal.
  • the first terminal 101 performs a first behavior on the selected first resource.
  • the first behavior is whether to use the first resource to retransmit the PSSCH.
  • the first resource is used for said PSSCH retransmission.
  • step S5101 can refer to the optional implementation methods of steps S2102 to S2104 of Figure 2A, steps S3102 to S3014 of Figure 3A, steps S3202 to S3203 of Figure 3B, step S3302 of Figure 3C, and other related parts in the embodiments involved in Figures 2A, 2B, 2C, 3A, 3B, and 3C, which will not be repeated here.
  • the present disclosure also provides a communication method, as described below:
  • the minimum time interval a+b must be satisfied between any two resources selected for the TB, where a and b are the values, i.e., a is the time interval between the last symbol of the PSSCH and the first symbol of the first PSfch occasion corresponding to the PSSCH, and b is the time required for PSFCH reception and processing and sidechain retransmission preparation, including the necessary multiplexing of physical channels and any TX-RX/RX-TX switching time.
  • a PSSCH supports a total of N PSFCH occasions, N ⁇ 1,2,3,4 ⁇ , and the time interval between any two adjacent PSFCH occasions is the PSFCH cycle.
  • the retransmission resource selected by the UE when the retransmission resource selected by the UE is located between the xth PSFCH occasion and the x+1th (1 ⁇ X ⁇ N)th PSFCH occasion, and no HARQ information is received on the xth PSFCH occasion and the PSFCH occasion before the xth PSFCH occasion, there are the following two schemes for the retransmission resource between the xth PSFCH occasion and the x+1th (1 ⁇ X ⁇ N)th PSFCH occasion:
  • the UE may perform retransmission using retransmission resources whose time domain resources are between the xth and x+1th PSFCH occasions.
  • the UE skips (i.e. does not use) the retransmission resources between the xth to x+1th PSFCH occasions.
  • the UE only uses the retransmission resources whose time domain resources are located after the physical layer reports NACK to the higher layer.
  • the period of PSFCH occasion is 4 slots.
  • the PSSCH located in slot 0 corresponds to 3 PSFCH occasions, which are located in slot 3, slot 7, and slot 11 respectively.
  • the selected retransmission resources are located in slot 5, slot 10, and slot 15.
  • the retransmission resources of slot 5 are located between the first PSFCH occasion and the second PSFCH occasion.
  • the UE does not receive any HARQ information on the first PSFCH occasion (slot 3). Then, after the retransmission resources of slot 5 arrive, the UE can use the retransmission resources located in slot 5 to perform retransmission.
  • the period of PSFCH occasion is 4 slots.
  • the PSSCH located in slot 0 corresponds to 3 PSFCH occasions, which are located in slot 3, slot 7, and slot 11 respectively.
  • the retransmission resource of slot 5 is between the 1st PSFCH occasion and the 2nd PSFCH occasion.
  • the UE does not receive any HARQ information on the 1st PSFCH occasion in slot 3.
  • the UE does not use the retransmission resource in slot 5 to perform retransmission, and the UE will continue to monitor the second PSFCH occasion.
  • the UE receives NACK on the second PSFCH occasion, and the UE will not continue to monitor the third PSFCH occasion, and will report NACK to the upper layer in the second PSFCH occasion in slot 7.
  • the upper layer will perform retransmission.
  • the retransmission resource in slot 10 arrives, the upper layer will use the retransmission resource in slot 10 to perform retransmission.
  • PSFCH prb set1 is the PRB set associated with the first PSFCH occurrence located in slot 3, that is, the frequency domain resources of the first PSFCH occurrence are determined in this PRB set
  • PSFCH prb set2 is the PRB set associated with the second PSFCH occurrence located in slot 7, that is, the frequency domain resources of the second PSFCH occurrence are determined in this PRB set
  • PSFCH prb set3 is the PRB set associated with the third PSFCH occurrence located in slot 11, that is, the frequency domain resources of the third PSFCH occurrence are determined in this PRB set.
  • condition for the UE to skip the retransmission resource includes at least one of the following:
  • the threshold is based on a resource pool, BWP, pre-configured or pre-defined.
  • the terminal behavior is specified, thereby avoiding the performance being affected due to unclear terminal behavior.
  • part or all of the steps and their optional implementations may be arbitrarily combined with part or all of the steps in other embodiments, or may be arbitrarily combined with optional implementations of other embodiments.
  • the embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods.
  • a device is also proposed, including a unit or module for implementing each step performed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.
  • a network device such as an access network device, a core network function node, a core network device, etc.
  • the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation.
  • the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory.
  • the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits.
  • the hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in
  • the processor is a circuit with signal processing capability.
  • the processor may be a circuit with instruction reading and execution capability, such as a central processing unit (CPU), a microprocessor, a graphics processor, or a processor.
  • the processor can realize certain functions through the logical relationship of the hardware circuit, and the logical relationship of the above hardware circuit is fixed or reconfigurable, such as the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the processor loads the configuration document to implement the hardware circuit configuration, which can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.
  • NPU neural network
  • FIG6A is a schematic diagram of the structure of the first terminal proposed in an embodiment of the present disclosure.
  • the first terminal 6100 may include: at least one of a transceiver module 6101, a processing module 6102, etc.
  • the transceiver module is used by the first terminal to send a physical direct link shared channel PSSCH to the second terminal, and the PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, where N is an integer greater than or equal to 1; the first terminal performs a first behavior on the selected first resource; wherein the first behavior is whether to use the first resource to perform retransmission of the PSSCH; wherein the first resource is used for retransmission of the PSSCH.
  • the transceiver module is used to perform at least one of the communication steps such as sending and/or receiving performed by the first terminal 101 in any of the above methods (for example, step S2101, step S2104, but not limited thereto), which will not be repeated here.
  • the processing module is used to execute at least one of the other steps (such as step S2102 and step S2103, but not limited thereto) performed by the first terminal 101 in any of the above methods, which will not be repeated here.
  • FIG6B is a schematic diagram of the structure of the second terminal proposed in an embodiment of the present disclosure.
  • the second terminal 6200 may include: a transceiver module 6201.
  • the transceiver module is used to receive a physical direct link shared channel PSSCH sent by the first terminal; the second terminal receives the PSSCH retransmitted by the first terminal performing the first behavior; wherein the first behavior is whether to use the first resource to retransmit the PSSCH; wherein the first resource is used for the PSSCH retransmission; PSSCH corresponds to N physical direct link feedback channel PSFCH opportunities, and N is an integer greater than or equal to 1.
  • the transceiver module is used to perform at least one of the communication steps such as sending and/or receiving performed by the second terminal 102 in any of the above methods (for example, step S2104, but not limited thereto), which will not be repeated here.
  • the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated.
  • the transceiver module may be interchangeable with the transceiver.
  • the processing module can be a module or include multiple submodules.
  • the multiple submodules respectively execute all or part of the steps required to be executed by the processing module.
  • the processing module can be replaced with the processor.
  • FIG7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure.
  • the communication device 7100 may be a network device (e.g., an access network device, a core network device, etc.), or a terminal (e.g., a user device, etc.), or a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods.
  • the communication device 7100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.
  • the communication device 7100 includes one or more processors 7101.
  • the processor 7101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and the communication data
  • the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute the program, and process the data of the program.
  • the communication device 7100 is used to execute any of the above methods.
  • one or more processors 7101 are used to call instructions so that the communication device 7100 executes any of the above methods.
  • the communication device 7100 further includes one or more transceivers 7102.
  • the transceiver 7102 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step S2102, step S2103, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, step S2101, but not limited thereto).
  • the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separated or integrated together.
  • the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc. may be replaced with each other, the terms such as transmitter, transmitting unit, transmitter, transmitting circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.
  • the communication device 7100 further includes one or more memories 7103 for storing data.
  • the memories 7103 may also be outside the communication device 7100.
  • the communication device 7100 may include one or more interface circuits 7104.
  • the interface circuit 7104 is connected to the memory 7103, and the interface circuit 7104 may be used to receive data from the memory 7103 or other devices, and may be used to send data to the memory 7103 or other devices.
  • the interface circuit 7104 may read the data stored in the memory 7103 and send the data to the processor 7101.
  • the communication device 7100 described in the above embodiments may be a network device or a terminal, but the communication device 7100 described in the present disclosure may be a network device or a terminal.
  • the scope is not limited to this, and the structure of the communication device 7100 may not be limited by FIG. 7A.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.
  • FIG. 7B is a schematic diagram of the structure of a chip 7200 provided in an embodiment of the present disclosure.
  • the communication device 7100 may be a chip or a chip system
  • the chip 7200 includes one or more processors 7201.
  • the chip 7200 is configured to execute any of the above methods.
  • the chip 7200 further includes one or more interface circuits 7202.
  • the terms interface circuit, interface, transceiver pin, etc. can be interchangeable.
  • the chip 7200 further includes one or more memories 7203 for storing data.
  • all or part of the memory 7203 can be outside the chip 7200.
  • the interface circuit 7202 is connected to the memory 7203, and the interface circuit 7202 can be used to receive data from the memory 7203 or other devices, and the interface circuit 7202 can be used to send data to the memory 7203 or other devices.
  • the interface circuit 7202 can read the data stored in the memory 7203 and send the data to the processor 7201.
  • the interface circuit 7202 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step S2102, step S2103, but not limited thereto).
  • the interface circuit 7202 performs the communication steps such as sending and/or receiving in the above method, for example, means that the interface circuit 7202 performs data interaction between the processor 7201, the chip 7200, the memory 7203, or the transceiver device.
  • the processor 7201 performs at least one of the other steps (for example, step S2101, but not limited thereto).
  • modules and/or devices described in the embodiments such as virtual devices, physical devices, chips, etc. can be combined or separated as needed.
  • some or all steps can also be performed by multiple modules and/or devices in collaboration, which is not limited here.
  • the present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices.
  • the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.
  • the present disclosure also proposes a program product, which, when executed by the communication device 7100, enables the communication device 7100 to execute any of the above methods.
  • the program product is a computer program product.
  • the present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

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Abstract

本公开涉及通信方法、第一终端、第二终端以及通信系统。方法包括：第一终端向第二终端发送物理直连链路共享信道PSSCH，所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；所述第一终端在选择的第一资源上，执行第一行为；其中，所述第一行为为是否使用所述第一资源对所述PSSCH执行重传的行为；其中，所述第一资源用于所述PSSCH重传。通过本公开实施例，规定了终端行为，避免了因为终端行为不清楚而影响性能。

Description

通信方法、第一终端、第二终端以及通信系统 技术领域
本公开涉及通信技术领域，尤其涉及通信方法、第一终端、第二终端以及通信系统。
背景技术
在通信领域中，物理直连链路共享信道(Pysical Sidelink Share Channel，PSSCH)通常被用于在终端间传输数据。在数据传输过程中，通过PSSCH到PSFCH的映射，每个PSSCH会分别被配置至少一个物理直连链路反馈信道(Physical Sidelink Feedback Channel，PSFCH)时机(occasion)，用于反馈PSSCH所对应的HARQ信息。
发明内容
在1个PSCCH对应多个PSFCH时机的情况下，终端针对重传资源的行为并不明确，从而会导致通信性能降低的问题。
本公开实施例提出了通信方法、第一终端、第二终端以及通信系统。
根据本公开实施例的第一方面，提出了一种通信方法，方法包括：第一终端向第二终端发送物理直连链路共享信道PSSCH，所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；按照所述第一终端选择的第一资源，确定是否使用所述第一资源对所述PSSCH执行重传；所述第一资源用于所述PSSCH重传。
根据本公开实施例的第二方面，提出了一种通信方法，方法包括：第二终端接收第一终端发送的物理直连链路共享信道PSSCH；所述第二终端接收第一终端执行是否使用第一资源对所述PSSCH执行重传的所述PSSCH；其中，所述第一资源用于所述PSSCH重传；所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。
根据本公开实施例的第三方面，提出了一种通信方法，方法包括：第一终端向第二终端发送物理直连链路共享信道PSSCH，所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；第二终端接收第一终端发送的物理直连链路共享信道PSSCH；所述第一终端按照选择的第一资源上，确定是否使用所述第一资源对所述PSSCH执行重传；其中，所述第一资源用于所述PSSCH重传。
根据本公开实施例的第四方面，提出了一种第一终端，包括：收发模块，向第二终端发送物理直连链路共享信道PSSCH，所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；处理模块，用于按照所述第一终端选择的第一资源，确定是否使用所述第一资源对所述PSSCH执行重传；其中，所述第一资源用于所述PSSCH重传。
根据本公开实施例的第五方面，提出了一种第二终端，包括：收发模块，用于接收第一终端发送的物理直连链路共享信道PSSCH，并接收第一终端执行是否使用第一资源对所述PSSCH执行重传的所述PSSCH；其中，所述第一资源用于所述PSSCH重传；所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。
根据本公开实施例的第六方面，提出了一种第一终端，包括：一个或多个处理器；其中，所述处理器用于执行第一方面的通信方法。
根据本公开实施例的第七方面，提出了一种第二终端，包括：一个或多个处理器；其中，所述处理器用于执行第二方面的通信方法。
根据本公开实施例的第八方面，提供通信系统，包括第一终端和第二终端，其中，第一终端被配置为实现第一方面的通信方法，第二终端被配置为实现第二方面的通信方法。
根据本公开实施例的第九方面，提供存储介质，存储介质存储有指令，其特征在于，当指令在通信设备上运行时，使得通信设备执行第一方面、第二方面任意一项的通信方法。
通过本公开实施例，规定了终端行为，避免了因为终端行为不清楚而影响性能。
附图说明
为了更清楚地说明本公开实施例中的技术方案，以下对实施例描述所需的附图进行介绍，以下附图仅仅是本公开的一些实施例，不对本公开的保护范围造成具体限制。
图1是根据本公开实施例提供的通信系统的架构的一个示例性示意图。
图2A是根据本公开实施例示出的通信方法的交互示意图。
图2B是根据本公开实施例示出的第一资源选择示意图。
图2C是根据本公开实施例示出的其他资源选择示意图。
图3A是根据本公开实施例示出的通信方法的流程示意图。
图3B是根据本公开实施例示出的通信方法的流程示意图。
图3C是根据本公开实施例示出的通信方法的流程示意图。
图4A是根据本公开实施例示出的通信方法的流程示意图。
图4B是根据本公开实施例示出的通信方法的流程示意图。
图5是根据本公开实施例示出的通信方法的交互示意图。
图6A是本公开实施例提出的第一终端的结构示意图。
图6B是本公开实施例提出的第二终端的结构示意图。
图7A是本公开实施例提出的通信设备的结构示意图。
图7B是本公开实施例提出的芯片的结构示意图。
具体实施方式
本公开实施例提出了通信方法、第一终端、第二终端以及通信系统。
第一方面，本公开实施例提出了第一终端向第二终端发送物理直连链路共享信道PSSCH，所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；按照所述第一终端选择的第一资源，确定是否使用所述第一资源对所述PSSCH执行重传；所述第一资源用于所述PSSCH重传。
结合第一方面的一些实施例，在一些实施例中，第一终端向第二终端发送物理直连链路共享信道PSSCH，PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；第一终端在选择的第一资源上，执行第一行为；其中，第一行为为是否使用所述第一资源对所述PSSCH执行重传的行为；其中，第一资源用于PSSCH重传。
在上述实施例中，通过明确终端在1个PSCCH对应多个PSFCH时机的情况下的重传行为，避免终端因行为不明而导致多余重传或者重传行为缺失而影响通信性能。
结合第一方面的一些实施例，在一些实施例中，所述第一终端确定满足以下至少一项：在第X个PSFCH时机以及第X+1个PSFCH时机之间存在第一资源；在第1个PSFCH时机到第X个PSFCH时机上，未接收到第二终端发送的所述PSSCH传输结果的混合自动重传请求HARQ信息，其中，所述X为大于或等于1，且小于N的整数。
结合第一方面的一些实施例，在一些实施例中，第一行为为使用第一资源进行所述PSSCH的重传的行为。
结合第一方面的一些实施例，在一些实施例中，第一行为为不使用第一资源进行所述PSSCH重传的行为。
结合第一方面的一些实施例，在一些实施例中，在满足第一条件的情况下，不使用第一资源进行PSSCH的重传；第一条件包括所述X的取值小于阈值。
在上述实施例中，明确了第一终端不使用第一资源进行重传的场景，从而明确终端在1个PSCCH对应多个PSFCH时机的情况下的行为，避免因终端行为不明而导致通信性能降低。
结合第一方面的一些实施例，在一些实施例中，阈值采用如下至少一种方式确定：基于资源池的预配置信息确定；基于资源集合RB set的预配置信息确定基于带宽部分BWP的预配置信息确定；基于预定义规则确定。
结合第一方面的一些实施例，在一些实施例中，在不满足第一条件的情况下，使用所述第一资源进行PSSCH的重传。
在上述实施例中，明确了第一终端使用第一资源进行重传的场景，从而明确终端在1个PSCCH对应多个PSFCH时机的情况下的行为，避免因终端行为不明而导致通信性能降低。
结合第一方面的一些实施例，在一些实施例中，第一终端为在PSSCH上传输的传输块TB选择的任意两个资源之间的时间间隔大于或等于最小时间间隔。
结合第一方面的一些实施例，在一些实施例中，最小时间间隔基于PSSCH所对应的第一个PSFCH时机确定。
第二方面，本公开实施例提出了第二终端接收第一终端发送的物理直连链路共享信道PSSCH；所述第二终端接收第一终端执行是否使用第一资源对所述PSSCH执行重传的所述PSSCH；其中，所述第一资源用于所述PSSCH重传；所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。
结合第二方面的一些实施例，在一些实施例中，第二终端接收第一终端发送的物理直连链路共 享信道PSSCH；第二终端接收第一终端执行第一行为所重传的所述PSSCH；其中，第一行为为是否使用第一资源对PSSCH执行重传的行为；其中，第一资源用于所述PSSCH重传；PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。
结合第二方面的一些实施例，在一些实施例中，在第X个PSFCH时机以及第X+1个PSFCH时机之间存在第一资源；方法还包括：第二终端在PSSCH对应N个物理直连链路反馈信道PSFCH时机上执行信道监听；在信道监听成功最早的PSFCH occasion上发送针对PSSCH传输结果的混合自动重传请求HARQ信息；其中，在第1个PSFCH时机到第X个PSFCH时机上，第二终端未向第一终端发送HARQ信息；其中，X为大于或等于1，且小于N的整数。
结合第二方面的一些实施例，在一些实施例中，第一行为为使用第一资源进行所述PSSCH的重传的行为。
结合第二方面的一些实施例，在一些实施例中，第一行为为不使用第一资源进行PSSCH重传的行为。
结合第二方面的一些实施例，在一些实施例中，在满足第一条件的情况下，不使用第一资源接收所述第一终端重传的PSSCH；第一条件包括所述X的取值小于阈值。
结合第二方面的一些实施例，在一些实施例中，阈值采用如下至少一种方式确定：基于资源池的预配置信息确定；基于资源集合RB set的预配置信息确定基于带宽部分BWP的预配置信息确定；基于预定义规则确定。
结合第二方面的一些实施例，在一些实施例中，方法还包括：
在不满足第一条件的情况下，使用所述第一资源接收所述第一终端重传的所述PSSCH。
结合第二方面的一些实施例，在一些实施例中，第一终端为PSSCH上传输的传输块TB选择的任意两个资源之间的时间间隔大于或等于最小时间间隔。
结合第二方面的一些实施例，在一些实施例中，最小时间间隔基于PSSCH所对应的第一个PSFCH时机确定。
第三方面，本公开实施例提出了通信方法，方法包括：第一终端向第二终端发送物理直连链路共享信道PSSCH，PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；第二终端接收第一终端发送的物理直连链路共享信道PSSCH；第一终端在选择的第一资源上，执行第一行为；其中，第一行为为是否使用所述第一资源对PSSCH执行重传的行为；其中，第一资源用于所述PSSCH重传。
第四方面，本公开实施例提出了一种第一终端，包括：收发模块，向第二终端发送物理直连链路共享信道PSSCH，所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；处理模块，用于按照所述第一终端选择的第一资源，确定是否使用所述第一资源对所述PSSCH执行重传；其中，所述第一资源用于所述PSSCH重传。
第五方面，本公开实施例提出了一种第二终端，包括：收发模块，用于接收第一终端发送的物理直连链路共享信道PSSCH，并接收第一终端执行是否使用第一资源对所述PSSCH执行重传的所述PSSCH；其中，所述第一资源用于所述PSSCH重传；所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。
第六方面，本公开实施例提出了一种第一终端，包括：一个或多个处理器；其中，所述处理器用于执行第一方面的通信方法。
第七方面，本公开实施例提出了一种第二终端，包括：一个或多个处理器；其中，所述处理器用于执行第二方面的通信方法。
第八方面，本公开实施例提出了一种通信系统，包括：第一终端和网络设备，其中，第一终端被配置为实现第一方面的通信方法，第二终端被配置为实现第二方面的通信方法。
第九方面，本公开实施例提出了一种存储介质存储有指令，当指令在通信设备上运行时，使得通信设备执行第一方面、第二方面任意一项的通信方法。
可以理解地，上述终端、接入网设备、第一网元、第二网元、核心网设备、通信系统、存储介质、程序产品、计算机程序、芯片或芯片系统均用于执行本公开实施例所提出的方法。因此，其所能达到的有益效果可以参考对应方法中的有益效果，此处不再赘述。
本公开实施例提出了通信方法、第一终端、第二终端以及通信系统。在一些实施例中，通信方法与信息处理方法、数据处理方法等术语可以相互替换，通信装置与信息处理装置、数据处理等术语可以相互替换，信息处理系统、通信系统等术语可以相互替换。
本公开实施例并非穷举，仅为部分实施例的示意，不作为对本公开保护范围的具体限制。在不 矛盾的情况下，某一实施例中的每个步骤均可以作为独立实施例来实施，且各步骤之间可以任意组合，例如，在某一实施例中去除部分步骤后的方案也可以作为独立实施例来实施，且在某一实施例中各步骤的顺序可以任意交换，另外，某一实施例中的可选实现方式可以任意组合；此外，各实施例之间可以任意组合，例如，不同实施例的部分或全部步骤可以任意组合，某一实施例可以与其他实施例的可选实现方式任意组合。
在各本公开实施例中，如果没有特殊说明以及逻辑冲突，各实施例之间的术语和/或描述具有一致性，且可以互相引用，不同实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本公开实施例中所使用的术语只是为了描述特定实施例的目的，而并非作为对本公开的限制。
在本公开实施例中，除非另有说明，以单数形式表示的元素，如“一个”、“一种”、“该”、“上述”、“所述”、“前述”、“这一”等，可以表示“一个且只有一个”，也可以表示“一个或多个”、“至少一个”等。例如，在翻译中使用如英语中的“a”、“an”、“the”等冠词(article)的情况下，冠词之后的名词可以理解为单数表达形式，也可以理解为复数表达形式。
在本公开实施例中，“多个”是指两个或两个以上。
在一些实施例中，“至少一者(至少一项、至少一个)(at least one of)”、“一个或多个(one or more)”、“多个(a plurality of)”、“多个(multiple)等术语可以相互替换。
在一些实施例中，“A、B中的至少一者”、“A和/或B”、“在一情况下A，在另一情况下B”、“响应于一情况A，响应于另一情况B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)；在一些实施例中A和B(A和B都被执行)。当有A、B、C等更多分支时也类似上述。
在一些实施例中，“A或B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)。当有A、B、C等更多分支时也类似上述。
本公开实施例中的“第一”、“第二”等前缀词，仅仅为了区分不同的描述对象，不对描述对象的位置、顺序、优先级、数量或内容等构成限制，对描述对象的陈述参见权利要求或实施例中上下文的描述，不应因为使用前缀词而构成多余的限制。例如，描述对象为“字段”，则“第一字段”和“第二字段”中“字段”之前的序数词并不限制“字段”之间的位置或顺序，“第一”和“第二”并不限制其修饰的“字段”是否在同一个消息中，也不限制“第一字段”和“第二字段”的先后顺序。再如，描述对象为“等级”，则“第一等级”和“第二等级”中“等级”之前的序数词并不限制“等级”之间的优先级。再如，描述对象的数量并不受序数词的限制，可以是一个或者多个，以“第一装置”为例，其中“装置”的数量可以是一个或者多个。此外，不同前缀词修饰的对象可以相同或不同，例如，描述对象为“装置”，则“第一装置”和“第二装置”可以是相同的装置或者不同的装置，其类型可以相同或不同；再如，描述对象为“信息”，则“第一信息”和“第二信息”可以是相同的信息或者不同的信息，其内容可以相同或不同。
在一些实施例中，“包括A”、“包含A”、“用于指示A”、“携带A”，可以解释为直接携带A，也可以解释为间接指示A。
在一些实施例中，“时频(time/frequency)”、“时频域”等术语是指时域和/或频域。
在一些实施例中，“响应于……”、“响应于确定……”、“在……的情况下”、“在……时”、“当……时”、“若……”、“如果……”等术语可以相互替换。
在一些实施例中，“大于”、“大于或等于”、“不小于”、“多于”、“多于或等于”、“不少于”、“高于”、“高于或等于”、“不低于”、“以上”等术语可以相互替换，“小于”、“小于或等于”、“不大于”、“少于”、“少于或等于”、“不多于”、“低于”、“低于或等于”、“不高于”、“以下”等术语可以相互替换。
在一些实施例中，装置等可以解释为实体的、也可以解释为虚拟的，其名称不限定于实施例中所记载的名称，“装置”、“设备(equipment)”、“设备(device)”、“电路”、“网元”、“节点”、“功能”、“单元”、“部件(section)”、“系统”、“网络”、“芯片”、“芯片系统”、“实体”、“主体”等术语可以相互替换。
在一些实施例中，“网络”可以解释为网络中包含的装置(例如，接入网设备、核心网设备等)。
在一些实施例中，“接入网设备(access network device，AN device)”、“无线接入网设备(radio access network device，RAN device)”、“基站(base station，BS)”、“无线基站(radio base station)”、“固定台(fixed station)”、“节点(node)”、“接入点(access point)”、“发送点(transmission point，TP)”、“接收点(reception point，RP)”、“发送和/或接收点(transmission/reception point，TRP)”、“面板(panel)”、“天线面板(antenna panel)”、“天线阵列(antenna array)”、“小区(cell)”、“宏 小区(macro cell)”、“小型小区(small cell)”、“毫微微小区(femto cell)”、“微微小区(pico cell)”、“扇区(sector)”、“小区组(cell group)”、“服务小区”、“载波(carrier)”、“分量载波(component carrier)”、“带宽部分(bandwidth part，BWP)”等术语可以相互替换。
在一些实施例中，“终端(terminal)”、“终端设备(terminal device)”、“用户设备(user equipment，UE)”、“用户终端(user terminal)”、“移动台(mobile station，MS)”、“移动终端(mobile terminal，MT)”、订户站(subscriber station)、移动单元(mobile unit)、订户单元(subscriber unit)、无线单元(wireless unit)、远程单元(remote unit)、移动设备(mobile device)、无线设备(wireless device)、无线通信设备(wireless communication device)、远程设备(remote device)、移动订户站(mobile subscriber station)、接入终端(access terminal)、移动终端(mobile terminal)、无线终端(wireless terminal)、远程终端(remote terminal)、手持设备(handset)、用户代理(user agent)、移动客户端(mobile client)、客户端(client)等术语可以相互替换。
在一些实施例中，接入网设备、核心网设备、或网络设备可以被替换为终端。例如，针对将接入网设备、核心网设备、或网络设备以及终端间的通信置换为多个终端间的通信(例如，设备对设备(device-to-device，D2D)、车联网(vehicle-to-everything，V2X)等)的结构，也可以应用本公开的各实施例。在该情况下，也可以设为终端具有接入网设备所具有的全部或部分功能的结构。此外，“上行”、“下行”等术语也可以被替换为与终端间通信对应的术语(例如，“侧行(side)”)。例如，上行信道、下行信道等可以被替换为侧行信道，上行链路、下行链路等可以被替换为侧行链路。
在一些实施例中，终端可以被替换为接入网设备、核心网设备、或网络设备。在该情况下，也可以设为接入网设备、核心网设备、或网络设备具有终端所具有的全部或部分功能的结构。
在一些实施例中，获取数据、信息等可以遵照所在地国家的法律法规。
在一些实施例中，可以在得到用户同意后获取数据、信息等。
此外，本公开实施例的表格中的每一元素、每一行、或每一列均可以作为独立实施例来实施，任意元素、任意行、任意列的组合也可以作为独立实施例来实施。
图1是根据本公开实施例示出的通信系统的架构示意图。
如图1所示，通信系统100包括第一终端(terminal)101、第二终端102。
在一些实施例中，第一终端101、第二终端102例如包括手机(mobile phone)、可穿戴设备、物联网设备、具备通信功能的汽车、智能汽车、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self-driving)中的无线终端设备、远程手术(remote medical surgery)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备中的至少一者，但不限于此。
可以理解的是，本公开实施例描述的通信系统是为了更加清楚的说明本公开实施例的技术方案，并不构成对于本公开实施例提出的技术方案的限定，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本公开实施例提出的技术方案对于类似的技术问题同样适用。
下述本公开实施例可以应用于图1所示的通信系统100、或部分主体，但不限于此。图1所示的各主体是例示，通信系统可以包括图1中的全部或部分主体，也可以包括图1以外的其他主体，各主体数量和形态为任意，各主体可以是实体的也可以是虚拟的，各主体之间的连接关系是例示，各主体之间可以不连接也可以连接，其连接可以是任意方式，可以是直接连接也可以是间接连接，可以是有线连接也可以是无线连接。
本公开各实施例可以应用于长期演进(Long Term Evolution，LTE)、LTE-Advanced(LTE-A)、LTE-Beyond(LTE-B)、SUPER 3G、IMT-Advanced、第四代移动通信系统(4th generation mobile communication system，4G)、)、第五代移动通信系统(5th generation mobile communication system，5G)、5G新空口(new radio，NR)、未来无线接入(Future Radio Access，FRA)、新无线接入技术(New-Radio Access Technology，RAT)、新无线(New Radio，NR)、新无线接入(New radio access，NX)、未来一代无线接入(Future generation radio access，FX)、Global System for Mobile communications(GSM(注册商标))、CDMA2000、超移动宽带(Ultra Mobile Broadband，UMB)、IEEE 802.11(Wi-Fi(注册商标))、IEEE 802.16(WiMAX(注册商标))、IEEE 802.20、超宽带(Ultra-WideBand，UWB)、蓝牙(Bluetooth(注册商标))、陆上公用移动通信网(Public Land Mobile Network，PLMN)网络、设备到设备(Device-to-Device，D2D)系统、机器到机器(Machine to Machine，M2M)系统、物联网(Internet of Things，IoT)系统、车联网(Vehicle-to-Everything，V2X)、利用其他通信方法 的系统、基于它们而扩展的下一代系统等。此外，也可以将多个系统组合(例如，LTE或者LTE-A与5G的组合等)应用。
在一些实施例中，在传统的(legacy)直连链路通信sidelink场景中，1个物理直连共享信道(Physical Sidelink Control Channel，PSSCH)只对应1个物理直连反馈信道(Physical Sidelink Feedback Channel，PSFCH)时机(occasion)。
在一些实施例中，在legacy的sidelink中，当1个传输块(Transport Block，TB)支持基于混合自动重传请求(Hybrid automatic repeat request，HARQ)反馈的重传的情况下，为这个TB选择的任意两个资源之间需要满足最小的时间间隔。
示例性的，最小的时间间隔可以为a+b。其中，“a”所表示的时间为：第一符号的结束位置与第二符号的开始位置的时间间隔。第一符号为PSSCH传输的资源中最后一个符号。第二符号为PSSCH传输资源对应的PSFCH时机接收的第一个符号。也即，PSSCH的最后1个符号和该PSSCH所对应的第1个PSFCH occasion的第一个符号之间的时间间隔。其中，“b”为PSFCH接收和处理以及侧链重传准备所需的时间。例如，“b”中可以包括以下至少一项：必要的物理通道的多路复用和任何发送至接收(TX-RX)，或者接收至发送(RX-TX)之间切换的时间。
在一些实施例中，在sidelink非授权频段中，1个PSCCH可以对应N个PSFCH时机，其中N为大于或等于1的整数。
可以理解的是，在1个PSCCH对应多个(例如N大于等于2)PSFCH时机的情况下，若继续依据在legacy的sidelink中所定义的最小的时间间隔，则会导致选择的重传资源位于第1个PSFCH occasion与最后1个PSFCH occasion之间。在选择的重传资源位于第1个PSFCH occasion与最后1个PSFCH occasion之间的情况下，会出现物理层还没有在PSFCH occasion上报HARQ信息，但选择的重传资源已经到来的情况。在出现物理层还没有在PSFCH occasion上报HARQ信息，但选择的重传资源已经到来的情况下，发送终端的高层无法确定是否使用该重传资源进行重传。
基于此，提出了一种通信方法，可以明确终端在该场景下的行为。
图2A是根据本公开实施例示出的通信方法的交互示意图。如图2A所示，本公开实施例涉及通信方法，上述方法包括：
步骤S2101，第一终端101向第二终端102发送PSSCH。
在一些实施例中，“发送”、“发射”、“上报”、“下发”、“传输”、“双向传输”、“发送和/或接收”等术语可以相互替换。
在一些实施例中，第二终端102接收物理直连共享信道(Physical Sidelink Control Channel，PSSCH)。
在一些实施例中，第二终端102接收来自第一终端101发送的PSSCH。
在一些实施例中，“获取”、“获得”、“得到”、“接收”、“传输”、“双向传输”、“发送和/或接收”可以相互替换，其可以解释为从其他主体接收，从协议中获取，从高层获取，自身处理得到、自主实现等多种含义。
在一些实施例中，在非授权频段中，第一终端101向第二终端102发送PSSCH。
在一些实施例中，PSSCH对应N个物理直连反馈信道(Physical Sidelink Feedback Channel，PSFCH)时机(occasion)，其中N为大于或等于1的整数。
步骤S2102，第一终端101选择第一资源。
在一些实施例中，第一资源用于PSSCH重传。
在一些实施例中，第一终端101向第二终端102发送的PSSCH上，存在多个PSSCH资源。
在一些实施例中，第一资源满足以下至少一项：在第X个PSFCH时机以及第X+1个PSFCH时机之间存在第一资源；在第1个到到第X个PSFCH时机上未接收到第二终端发送的PSSCH传输结果的混合自动重传请求HARQ信息，其中，X为大于或等于1，且小于N的整数。
在一些实施例中，第一资源为满足最小时间间隔的重传资源。
在一些实施例中，第一资源与PSSCH之间的时间间隔大于或等于最小时间间隔。
在一些实施例中，最小时间间隔基于PSSCH所对应的第一个PSFCH时机确定。
在一些实施例中，最小时间间隔基于以下至少一项内容对应：
PSSCH所对应的第一个PSFCH时机、以及PSSCH最后一个符号。
在一些实施例中，最小时间间隔的定义可以参看上述实施例中所定义的最小时间间隔，例如“a+b”，此处不再一一赘述。
在一些实施例中，终端101为PSSCH上传输的传输块(Transport Block，TB)选择的任意两个 资源之间的时间间隔大于或等于最小时间间隔。
步骤S2103，第一终端101在选择的第一资源上，执行第一行为。
第一行为为是否使用第一资源对所述PSSCH执行重传的行为。
在一些实施例中，第一终端101在选择的第一资源上，执行第一行为可以理解为是第一终端101按照所述第一终端选择的第一资源，确定是否使用所述第一资源对所述PSSCH执行重传。
在一些实施例中，第一行为包括以下至少一项：
使用第一资源对所述PSSCH执行重传的行为，以及不使用第一资源对所述PSSCH执行重传的行为。
在一些实施例中，第一终端101在选择的第一资源上，可以使用第一资源对PSSCH执行重传，也可以不使用第一资源对PSSCH执行重传。
在一些实施例中，在不满足第一条件的情况下，第一终端101使用第一资源对PSSCH执行重传。
在一些实施例中，在一些实施例中，第一条件包括X的取值小于阈值。
在一些实施例中，阈值采用如下至少一种方式确定：
基于资源池的预配置信息确定；
基于资源集合(Resource Block set，RB)的预配置信息确定
基于带宽部分(Bandwidth Part，BWP)的预配置信息确定；
基于预定义规则确定。
在一些实施例中，第一终端101在选择的第一资源上，使用第一资源对所述PSSCH执行重传。
示例性的，图2B是根据本公开实施例示出的第一资源选择示意图。如图2B所示，PSFCH时机的周期是4个时隙(slot)，当1个PSSCH对应3个PSFCH时机时(也即位于slot3对应的PSFCH occasion，位于slot7对应的PSFCH occasion以及位于slot11对应的PSFCH occasion)。假定最小时间间隔“a+b”为5个slot。则对应选择的重传资源，分别为slot5对应的重传资源，slot10对应的重传资源以及slot15对应的重传资源。
进一步的，基于图2B可知，slot5对应的重传资源位于slot3对应的PSFCH occasion与slot7对应的PSFCH occasion之间。在第一终端101在slot3对应的PSFCH occasion上，没有接收到HARQ信息，并且在等待到slot5对应的重传资源到来时，第一终端101可以基于slot5对应的重传资源进行重传。可以理解的是，此种情况下的slot5可以被理解为第一资源。
需要说明的是，图2B中，PSFCH物理资源块(Physical Resource Block，PRB)集合(set)1是位于slot3对应的PSFCH occasion所关联的PRB集合。也即，第一个PSFCH occasion的频域资源在该PRB集合中确定。PSFCH PRB set2是位于slot7对应的PSFCH occasion所关联的PRB集合。也即第二个PSFCH occasion的频域资源在该PRB集合中确定。PSFCH PRB set3是位于slot11对应的PSFCH occasion所关联的PRB集合。也即第三个PSFCH occasion的频域资源在该PRB集合中确定。
在一些实施例中，“帧(frame)”、“无线帧(radio frame)”、“子帧(subframe)”、“时隙(slot)”、“子时隙(sub-slot)”、“迷你时隙(mini-slot)”、“符号(symbol)”、“码元(symbol)”、“发送时间间隔(transmission time interval，TTI)”等术语可以相互替换。
在一些实施例中，第一终端101在选择的第一资源上，不使用第一资源对PSSCH执行重传。
示例性的，接续图2B实施例，在第一终端101在slot3对应的PSFCH occasion上，没有接收到HARQ信息，并且在在等待到slot5对应的重传资源到来时，不使用slot5对PSSCH执行重传。
在一些实施例中，在满足第一条件的情况下，不使用第一资源对PSSCH执行重传。
第一终端101在选择的第一资源上，不使用第一资源对PSSCH执行重传，使用时域资源位于接收到否定确认(Negative Acknowledgement，NACK)信息之后的重传资源进行重传。
示例性的，图2C是根据本公开实施例示出的其他资源选择示意图。如图2C所示，PSFCH时机的周期是4个时隙(slot)，当1个PSSCH对应3个PSFCH时机时(也即位于slot3对应的PSFCH occasion，位于slot7对应的PSFCH occasion以及位于slot11对应的PSFCH occasion)。假定最小时间间隔“a+b”为5个slot。则对应选择的重传资源，分别为slot5对应的重传资源，slot10对应的重传资源以及slot15对应的重传资源。
进一步的，基于图2C可知，slot5对应的重传资源位于slot3对应的PSFCH occasion与slot7对应的PSFCH occasion之间。在第一终端101在slot3对应的PSFCH occasion上，没有接收到HARQ信息，并且在获取到slot5对应的重传资源的情况下，第一终端101不基于slot5对应的重传资源进行重传。可以理解的是，此种情况下的slot5可以被理解为第一资源。第一终端101会继续监听第二个PSFCH时机，第一终端101在位于slot7对应的PSFCH occasion上收到NACK的情况下，第一终 端101不会继续监听位于slot11对应的PSFCH occasion，并在位于slot7对应的PSFCH occasion向高层报告NACK，高层将执行重传。
进一步的，当位于slot10的重传资源到来，高层会使用位于slot10的重传资源执行重传。
需要说明的是，针对PSFCH PRB的相关说明，可以参看图2B实施例中的相关说明，此处不再重复赘述。
步骤S2104，第一终端101基于执行第一行为发送HARQ信息。
在一些实施例中，第一终端101基于执行第一行为向第二终端102发送HARQ。
在一些实施例中，第二终端102接收基于执行第一行为发送的HARQ。
在一些实施例中，第二终端102来自第一终端101基于执行第一行为发送的HARQ。
在一些实施例中，信息等的名称不限定于实施例中所记载的名称，“信息(information)”、“消息(message)”、“信号(signal)”、“信令(signaling)”、“报告(report)”、“配置(configuration)”、“指示(indication)”、“指令(instruction)”、“命令(command)”、“信道”、“参数(parameter)”、“域”、“字段”、“符号(symbol)”、“码元(symbol)”、“码本(codebook)”、“码字(codeword)”、“码点(codepoint)”、“比特(bit)”、“数据(data)”、“程序(program)”、“码片(chip)”等术语可以相互替换。
在一些实施例中,“PSSCH”,“数据”、“TB传输块”、“PSSCH数据”等术语可以互相替换。
示例性的，如对所述PSSCH执行重传，可以指对第一终端的数据执行重传，也可以指对所述PSSCH上传输的TB执行重传。
在一些实施例中，“上行”、“上行链路”、“物理上行链路”等术语可以相互替换，“下行”、“下行链路”、“物理下行链路”等术语可以相互替换，“侧行(side)”、“侧行链路(sidelink)”、“侧行通信”、“侧行链路通信”、“直连”、“直连链路”、“直连通信”、“直连链路通信”等术语可以相互替换。
在一些实施例中，“时刻”、“时间点”、“时间”、“时间位置”等术语可以相互替换，“时长”、“时段”、“时间窗口”、“窗口”、“时间”等术语可以相互替换。
在一些实施例中，“资源块(resource block，RB)”、“物理资源块(physical resource block，PRB)”、“子载波组(sub-carrier group，SCG)”、“资源元素组(resource element group，REG)”、“PRB对”、“RB对”、“资源元素(resource element，RE)”、“子载波(sub-carrier)”等术语可以相互替换。
在一些实施例中，“特定(certain)”、“预定(preseted)”、“预设”、“设定”、“指示(indicated)”、“某一”、“任意”、“第一”等术语可以相互替换，“特定A”、“预定A”、“预设A”、“设定A”、“指示A”、“某一A”、“任意A”、“第一A”可以解释为在协议等中预先规定的A，也可以解释为通过设定、配置、或指示等得到的A，也可以解释为特定A、某一A、任意A、或第一A等，但不限于此。
在一些实施例中，判定或判断可以通过以1比特表示的值(0或1)来进行，也可以通过以真(true)或者假(false)表示的真假值(布尔值(boolean))来进行，也可以通过数值的比较(例如，与预定值的比较)来进行，但不限于此。
在一些实施例中，“不期待接收”可以解释为不在时域资源和/或频域资源上接收，也可以解释为在接收到数据等后，不对该数据等执行后续处理；“不期待发送”可以解释为不发送，也可以解释为发送但是不期待接收方对发送的内容做出响应。
本公开实施例所涉及的通信方法可以包括步骤S2101～步骤S2104中的至少一者。本公开实施例所涉及的通信方法可以包括步骤S2101～步骤S2104中的至少一者。例如，步骤S2102可以作为独立实施例来实施，步骤S2103可以作为独立实施例来实施，步骤S2102+步骤S2103可以作为独立实施例来实施，步骤S2101+步骤S2102+步骤S2103可以作为独立实施例来实施，但不限于此。
在一些实施例中，步骤S2102、S2103可以交换顺序或同时执行。
在一些实施例中，步骤S2101、S2102、S2104是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，步骤S2101、S2102、S2104是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，步骤S2101、S2102、S2103是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，可参见图2A、图2B以及图2C所对应的说明书之前或之后记载的其他可选实现方式。
图3A是根据本公开实施例示出的通信方法的流程示意图。如图3A所示，本公开实施例涉及通 信方法，上述方法包括：
步骤S3101：发送PSSCH。
在一些实施例中，步骤S3101的可选实现方式可以参见图2A的步骤S2101的可选实现方式、及图2A、图2B以及图2C所涉及的实施例中其他关联部分，此处不再赘述。
步骤S3102：选择第一资源。
步骤S3102的可选实现方式可以参见图2A的步骤S2102的可选实现方式、及图2A、图2B以及图2C所涉及的实施例中其他关联部分，此处不再赘述。
步骤S3103：按照第一终端选择的第一资源，确定是否使用第一资源对PSSCH执行重传。
步骤S3103的可选实现方式可以参见图2A的步骤S2103的可选实现方式、及图2A、图2B以及图2C所涉及的实施例中其他关联部分，此处不再赘述。
步骤S3104：基于执行第一行为发送HARQ信息。
步骤S3104的可选实现方式可以参见图2A的步骤S2104的可选实现方式、及图2A、图2B以及图2C所涉及的实施例中其他关联部分，此处不再赘述。
本公开实施例所涉及的通信方法可以包括步骤S3101～步骤S3104中的至少一者。例如，步骤S3102可以作为独立实施例来实施，步骤S3103可以作为独立实施例来实施步骤S3101+S3102可以作为独立实施例来实施，步骤S3101+S3103可以作为独立实施例来实施，步骤S3102+S3103可以作为独立实施例来实施，步骤S3101+S3102+S3103+S3104可以作为独立实施例来实施，但不限于此。
在一些实施例中，步骤S3102、S3103可以交换顺序或同时执行，步骤S3102、S3103可以交换顺序或同时执行。
在一些实施例中，步骤S3101、S3103、S3104是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，步骤S3101、S3102、S3104是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，步骤S3101、S3102、S3103是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
图3B是根据本公开实施例示出的通信方法的流程示意图。如图3B所示，本公开实施例涉及通信方法，上述方法包括：
步骤S3201：发送PSSCH。
步骤S3201的可选实现方式可以参见图2A的步骤S2101、图3A的步骤S3101的可选实现方式、及图2A、图2B、图2C、图3A所涉及的实施例中其他关联部分，此处不再赘述。
步骤S3202：选择第一资源。
步骤S3202的可选实现方式可以参见图2A的步骤S2102、图3A的步骤S3102的可选实现方式、及图2A、图2B、图2C、图3A所涉及的实施例中其他关联部分，此处不再赘述。
步骤S3203：按照第一终端选择的第一资源，确定是否使用第一资源对PSSCH执行重传。
步骤S3203的可选实现方式可以参见图2A的步骤S2103、S2104图3A的步骤S3103的可选实现方式、及图2A、图2B、图2C、图3A所涉及的实施例中其他关联部分，此处不再赘述。
在本公开实施例中，步骤S3201可以与图3A的步骤S3102-S3103组合，步骤S3202可以与图3A的步骤S3101、S3103组合。
图3C是根据本公开实施例示出的通信方法的流程示意图。如图3C所示，本公开实施例涉及通信方法，上述方法包括：
步骤S3301：发送PSSCH。
步骤S3301的可选实现方式可以参见图2A的步骤S2101、图3A的步骤S3101、图3B的步骤S3201的可选实现方式、及图2A、图2B、图2C、图3A、图3B所涉及的实施例中其他关联部分，此处不再赘述。
步骤S3302：按照第一终端选择的第一资源，确定是否使用第一资源对所述PSSCH执行重传。
步骤S3302的可选实现方式可以参见图2A的步骤S2102、步骤S2103、步骤S2104图3A的步骤S3102、步骤S3103、步骤S3104图3B的步骤S3202、步骤S3203的可选实现方式、及图2A、图2B、图2C、图3A、图3B所涉及的实施例中其他关联部分，此处不再赘述。
在一些实施例中，第一终端向第二终端发送物理直连链路共享信道PSSCH，PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；第一终端在选择的第一资源上，执行第一行为；其中，第一行为为是否使用所述第一资源对所述PSSCH执行重传的行为；其中，第一资 源用于所述PSSCH重传。
在一些实施例中，终端确定满足以下至少一项：在第X个PSFCH时机以及第X+1个PSFCH时机之间存在第一资源；在第1个PSFCH时机到第X个PSFCH时机上，未接收到第二终端发送的PSSCH传输结果的混合自动重传请求HARQ信息，其中，X为大于或等于1，且小于N的整数。
在一些实施例中，第一行为为使用第一资源进行PSSCH的重传的行为。
在一些实施例中，第一行为为不使用第一资源进行PSSCH重传的行为。
在一些实施例中，在满足第一条件的情况下，不使用第一资源进行所述PSSCH的重传；第一条件包括所述X的取值小于阈值。
在一些实施例中，阈值采用如下至少一种方式确定：基于资源池的预配置信息确定；基于资源集合RB set的预配置信息确定基于带宽部分BWP的预配置信息确定；基于预定义规则确定。
在一些实施例中，方法还包括：在不满足第一条件的情况下，使用第一资源进行所述PSSCH的重传。
在一些实施例中，终端为PSSCH上传输的传输块TB选择的任意两个资源之间的时间间隔大于或等于最小时间间隔。
在一些实施例中，TB的初传资源和重传资源之间的时间间隔大于或等于最小时间间隔，或者重传资源和重传资源之间的时间间隔大于或等于最小时间间隔。
在一些实施例中，最小时间间隔基于PSSCH所对应的第一个PSFCH时机确定。
图4A是根据本公开实施例示出的通信方法的流程示意图。如图4A所示，本公开实施例涉及通信方法，上述方法包括：
步骤S4101，接收PSSCH。
步骤S4101的可选实现方式可以参见图2A的步骤S2101、图3A的步骤S3101、图3B的步骤S3201、图3C的步骤S3301的可选实现方式、及图2A、图2B、图2C、图3A、图3B以及图3C所涉及的实施例中其他关联部分，此处不再赘述。
步骤S4102，接收终端101基于执行是否使用第一资源对PSSCH执行重传的PSSCH。
步骤S4102的可选实现方式可以参见图2A的步骤S2104、图3A的步骤S3104、图3B的步骤S3203、图3C的步骤S3302的可选实现方式、及图2A、图2B、图2C、图3A、图3B以及图3C所涉及的实施例中其他关联部分，此处不再赘述。
本公开实施例所涉及的通信方法可以包括步骤S4101～步骤S4102中的至少一者。例如，步骤S4102可以作为独立实施例来实施，步骤S4101可以作为独立实施例来实施步骤S4101+S4102可以作为独立实施例来实施，但不限于此。
在一些实施例中，步骤S4102、S4101可以交换顺序或同时执行。
在一些实施例中，步骤S4101是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，步骤S4102是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在本公开实施例中，步骤S4101可以与图3A的步骤S3102-S3103组合，步骤S4102可以与图3A的步骤S3101、S3103组合。
图4B是根据本公开实施例示出的通信方法的流程示意图。如图4B所示，本公开实施例涉及通信方法，上述方法包括：
步骤S4201，接收PSSCH。
步骤S4201的可选实现方式可以参见图2A的步骤S2101、图3A的步骤S3101、图3B的步骤S3201、图3C的步骤S3301、图4A的步骤S4101的可选实现方式、及图2A、图2B、图2C、图3A、图3B、图3C以及图4A所涉及的实施例中其他关联部分，此处不再赘述。
在一些实施例中，第二终端接收第一终端发送的物理直连链路共享信道PSSCH；第二终端接收第一终端执行第一行为所重传的所述PSSCH；其中，第一行为为是否使用第一资源对所述PSSCH执行重传的行为；其中，第一资源用于所述PSSCH重传；PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。
在一些实施例中，在第X个PSFCH时机以及第X+1个PSFCH时机之间存在第一资源；方法还包括：第二终端在PSSCH对应N个物理直连链路反馈信道PSFCH时机上执行信道监听；在信道监听成功最早的PSFCH occasion上发送针对PSSCH传输结果的混合自动重传请求HARQ信息；其中，在第1个PSFCH时机到第X个PSFCH时机上，第二终端未向第一终端发送所述HARQ信息；其中， X为大于或等于1，且小于N的整数。
在一些实施例中，第一行为为使用所述第一资源进行PSSCH的重传的行为。
在一些实施例中，第一行为为不使用所述第一资源进行PSSCH重传的行为。
在一些实施例中，在满足第一条件的情况下，不使用第一资源接收所述第一终端重传的PSSCH；第一条件包括所述X的取值小于阈值。
在一些实施例中，阈值采用如下至少一种方式确定：基于资源池的预配置信息确定；基于资源集合RB set的预配置信息确定基于带宽部分BWP的预配置信息确定；基于预定义规则确定。
在一些实施例中，在不满足第一条件的情况下，使用第一资源接收所述第一终端重传的PSSCH。
在一些实施例中，第一终端为PSSCH上传输的传输块TB选择的任意两个资源之间的时间间隔大于或等于最小时间间隔。
在一些实施例中，TB的初传资源和重传资源之间的时间间隔大于或等于最小时间间隔，或者重传资源和重传资源之间的时间间隔大于或等于最小时间间隔。
在一些实施例中，最小时间间隔基于所述PSSCH所对应的第一个PSFCH时机确定。
一种实施方式为，最小时间间隔等于a+b，其中a值是由所述PSSCH所对应的第一个PSFCH时机确定，即时间间隔a等于PSSCH所位于的最后1个符号和该PSSCH所对应的第1个PSFCH occasion的第一个符号之间的时间间隔。
在一些实施例中，当1个TB支持基于HARQ反馈的重传，则为该TB选择的任意两个资源之间需要满足最小的时间间隔a+b,a和b值，即a指的是PSSCH的最后1个符号和该PSSCH所对应的第1个PSfch occasion的第一个符号之间的时间间隔，b值为PSFCH接收和处理以及侧链重传准备所需的时间，包括必要的物理通道的多路复用和任何TX-RX/RX-TX切换时间。1个PSSCH共支持N个PSFCH occasion,N∈{1,2,3,4}，且任意两个相邻PSFCH occasion之间的时间间隔为PSFCH周期。
图5是根据本公开实施例示出的通信方法的交互示意图。如图5所示，本公开实施例涉及通信方法，上述方法包括：
步骤S5101，第一终端101向第二终端102发送PSSCH。
在一些实施例中，第二终端102接收PSSCH。
在一些实施例中，PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。
步骤S5101的可选实现方式可以参见图2A的步骤S2101、图3A的步骤S3101、图3B的步骤S3201、图3C的步骤S3301、图4A的步骤S4101、图4B的步骤S4201的可选实现方式、及图2A、图2B、图2C、图3A、图3B、图3C、图4A以及图4B所涉及的实施例中其他关联部分，此处不再赘述。
步骤S5102，第一终端按照第一终端选择的第一资源，确定是否使用第一资源对PSSCH执行重传。
在一些实施例中，第一终端101在选择的第一资源上，执行第一行为。
在一些实施例中，第一行为为是否使用所述第一资源对所述PSSCH执行重传的行为。
在一些实施例中，第一资源用于所述PSSCH重传。
步骤S5101的可选实现方式可以参见图2A的步骤S2102～S2104、图3A的步骤S3102～S3014、图3B的步骤S3202～S3203、图3C的步骤S3302的可选实现方式、及图2A、图2B、图2C、图3A、图3B、图3C所涉及的实施例中其他关联部分，此处不再赘述。
本公开实施例还提供了一种通信方法，如下所述：
在一些实施例中，当1个TB支持基于HARQ反馈的重传，则为该TB选择的任意两个资源之间需要满足最小的时间间隔a+b,a和b值，即a指的是PSSCH的最后1个符号和该PSSCH所对应的第1个PSfch occasion的第一个符号之间的时间间隔，b值为PSFCH接收和处理以及侧链重传准备所需的时间，包括必要的物理通道的多路复用和任何TX-RX/RX-TX切换时间。1个PSSCH共支持N个PSFCH occasion,N∈{1,2,3,4}，且任意两个相邻PSFCH occasion之间的时间间隔为PSFCH周期。
在一些实施例中，当UE选择的重传资源位于第x个PSFCH occasion和第x+1(1≤X＜N)个PSFCH occasion之间，且在第x个PSFCH occasion和第x个PSFCH occasion之前的PSFCH occasion上都没有接收到任何的HARQ信息，对于第x个PSFCH occasion和第x+1(1≤X＜N)个PSFCH occasion之间的重传资源，有如下两个方案：
-A)UE可以使用时域资源位于第x个到第x+1个PSFCH occasion之间的重传资源执行重传。
-B)UE skip(即不使用)第x个到第x+1个PSFCH occasion之间的重传资源，UE只使用时域资源位于物理层向高层报告NACK之后的重传资源。
示例性的，针对-A)，接续图2B实施例，PSFCH occasion的周期是4个slot，当1个PSSCH对应3个PSFCH occasion时，位于slot 0的PSSCH对应3个PSFCH occasion，分别位于slot 3,slot7,slot 11。假设a+b＝5个slot，选择的重传资源位于slot5,slot10,slot 15，slot 5的重传资源位于第1个PSFCH occasion和第2个PSFCH occasion之间，UE在第1个PSFCH occasion上(slot 3)没有接收到任何的HARQ信息，则slot 5的重传资源到来后，UE可以使用位于slot 5的重传资源执行重传。
示例性的，针对-B)，接续图2C实施例，PSFCH occasion的周期是4个slot，当1个PSSCH对应3个PSFCH occasion时，位于slot 0的PSSCH对应3个PSFCH occasion，分别位于slot 3,slot7,slot 11。假设a+b＝5个slot，选择的重传资源位于slot5,slot10,slot 15，slot 5的重传资源位于第1个PSFCHoccasion和第2个PSFCH occasion之间，UE在位于slot3的第1个PSFCH occasion上没有接收到任何的HARQ信息，则slot 5的重传资源到来后，UE不使用位于slot 5的重传资源执行重传，UE会继续监听第二个PSFCH occasion，UE在第二个PSFCH occasion上接收到NACK，UE不会继续监听第三个PSFCH occasion，并在位于slot 7的第二个PSFCH occasion会向高层报告NACK，高层将执行重传，当位于slot 10的重传资源到来，高层会使用位于slot 10的重传资源执行重传。
进一步的，PSFCH prb set1是位于slot3的第一个PSFCH occasion的所关联的PRB集合，即第一个PSFCH occasion的频域资源在该PRB集合中确定，PSFCH prb set2是位于slot7的第2个PSFCH occasion的所关联的PRB集合，即第2个PSFCH occasion的频域资源在该PRB集合中确定，PSFCH prb set3是位于slot11的第三个PSFCH occasion的所关联的PRB集合，即第三个PSFCH occasion的频域资源在该PRB集合中确定。
在一些实施例中，UE skip该重传资源的条件包括以下至少一项：
-a)在第x个PSFCH occasion和第x个PSFCH occasion之前的PSFCH occasion上都没有接收到任何的HARQ信息。
-b)当x的值小于等于阈值，采用option2，否则就采用-A)。
在一些实施例中，阈值是基于资源池，BWP，预配置或者预定义的。
通过本公开实施例，在为1个TB执行资源选择需要满足的最小间隔a+b的情况下，规定了终端行为，避免了因为终端行为不清楚而影响性能。
在本公开实施例中，部分或全部步骤、其可选实现方式可以与其他实施例中的部分或全部步骤任意组合，也可以与其他实施例的可选实现方式任意组合。
本公开实施例还提出用于实现以上任一方法的装置，例如，提出一装置，上述装置包括用以实现以上任一方法中终端所执行的各步骤的单元或模块。再如，还提出另一装置，包括用以实现以上任一方法中网络设备(例如接入网设备、核心网功能节点、核心网设备等)所执行的各步骤的单元或模块。
应理解以上装置中各单元或模块的划分仅是一种逻辑功能的划分，在实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。此外，装置中的单元或模块可以以处理器调用软件的形式实现：例如装置包括处理器，处理器与存储器连接，存储器中存储有指令，处理器调用存储器中存储的指令，以实现以上任一方法或实现上述装置各单元或模块的功能，其中处理器例如为通用处理器，例如中央处理单元(Central Processing Unit，CPU)或微处理器，存储器为装置内的存储器或装置外的存储器。或者，装置中的单元或模块可以以硬件电路的形式实现，可以通过对硬件电路的设计实现部分或全部单元或模块的功能，上述硬件电路可以理解为一个或多个处理器；例如，在一种实现中，上述硬件电路为专用集成电路(application-specific integrated circuit，ASIC)，通过对电路内元件逻辑关系的设计，实现以上部分或全部单元或模块的功能；再如，在另一种实现中，上述硬件电路为可以通过可编程逻辑器件(programmable logic device，PLD)实现，以现场可编程门阵列(Field Programmable Gate Array，FPGA)为例，其可以包括大量逻辑门电路，通过配置文件来配置逻辑门电路之间的连接关系，从而实现以上部分或全部单元或模块的功能。以上装置的所有单元或模块可以全部通过处理器调用软件的形式实现，或全部通过硬件电路的形式实现，或部分通过处理器调用软件的形式实现，剩余部分通过硬件电路的形式实现。
在本公开实施例中，处理器是具有信号处理能力的电路，在一种实现中，处理器可以是具有指令读取与运行能力的电路，例如中央处理单元(Central Processing Unit，CPU)、微处理器、图形处 理器(graphics processing unit，GPU)(可以理解为微处理器)、或数字信号处理器(digital signal processor，DSP)等；在另一种实现中，处理器可以通过硬件电路的逻辑关系实现一定功能，上述硬件电路的逻辑关系是固定的或可以重构的，例如处理器为专用集成电路(application-specific integrated circuit，ASIC)或可编程逻辑器件(programmable logic device，PLD)实现的硬件电路,例如FPGA。在可重构的硬件电路中，处理器加载配置文档，实现硬件电路配置的过程，可以理解为处理器加载指令，以实现以上部分或全部单元或模块的功能的过程。此外，还可以是针对人工智能设计的硬件电路，其可以理解为ASIC，例如神经网络处理单元(Neural Network Processing Unit，NPU)、张量处理单元(Tensor Processing Unit，TPU)、深度学习处理单元(Deep learning Processing Unit，DPU)等。
图6A是本公开实施例提出的第一终端的结构示意图。如图6A所示，第一终端6100可以包括：收发模块6101、处理模块6102等中的至少一者。在一些实施例中，上述收发模块用于第一终端向第二终端发送物理直连链路共享信道PSSCH，PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；第一终端在选择的第一资源上，执行第一行为；其中，第一行为为是否使用所述第一资源对所述PSSCH执行重传的行为；其中，第一资源用于所述PSSCH重传。可选地，上述收发模块用于执行以上任一方法中第一终端101执行的发送和/或接收等通信步骤(例如步骤S2101、步骤S2104，但不限于此)中的至少一者，此处不再赘述。可选地，上述处理模块用于执行以上任一方法中第一终端101执行的其他步骤(例如步骤S2102、步骤S2103，但不限于此)中的至少一者，此处不再赘述。
图6B是本公开实施例提出的第二终端的结构示意图。如图6B所示，第二终端6200可以包括：收发模块6201。在一些实施例中，上述收发模块用于接收第一终端发送的物理直连链路共享信道PSSCH；第二终端接收第一终端执行第一行为所重传的所述PSSCH；其中，第一行为为是否使用第一资源对PSSCH执行重传的行为；其中，第一资源用于所述PSSCH重传；PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。可选地，上述收发模块用于执行以上任一方法中第二终端102执行的发送和/或接收等通信步骤(例如步骤S2104，但不限于此)中的至少一者，此处不再赘述。
在一些实施例中，收发模块可以包括发送模块和/或接收模块，发送模块和接收模块可以是分离的，也可以集成在一起。可选地，收发模块可以与收发器相互替换。
在一些实施例中，处理模块可以是一个模块，也可以包括多个子模块。可选地，上述多个子模块分别执行处理模块所需执行的全部或部分步骤。可选地，处理模块可以与处理器相互替换。
图7A是本公开实施例提出的通信设备7100的结构示意图。通信设备7100可以是网络设备(例如接入网设备、核心网设备等)，也可以是终端(例如用户设备等)，也可以是支持网络设备实现以上任一方法的芯片、芯片系统、或处理器等，还可以是支持终端实现以上任一方法的芯片、芯片系统、或处理器等。通信设备7100可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
如图7A所示，通信设备7100包括一个或多个处理器7101。处理器7101可以是通用处理器或者专用处理器等，例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行程序，处理程序的数据。可选地，通信设备7100用于执行以上任一方法。可选地，一个或多个处理器7101用于调用指令以使得通信设备7100执行以上任一方法。
在一些实施例中，通信设备7100还包括一个或多个收发器7102。在通信设备7100包括一个或多个收发器7102时，收发器7102执行上述方法中的发送和/或接收等通信步骤(例如步骤S2102、步骤S2103，但不限于此)中的至少一者，处理器7101执行其他步骤(例如步骤S2101，但不限于此)中的至少一者。在可选的实施例中，收发器可以包括接收器和/或发送器，接收器和发送器可以是分离的，也可以集成在一起。可选地，收发器、收发单元、收发机、收发电路、接口电路、接口等术语可以相互替换，发送器、发送单元、发送机、发送电路等术语可以相互替换，接收器、接收单元、接收机、接收电路等术语可以相互替换。
在一些实施例中，通信设备7100还包括用于存储数据的一个或多个存储器7103。可选地，全部或部分存储器7103也可以处于通信设备7100之外。在可选的实施例中，通信设备7100可以包括一个或多个接口电路7104。可选地，接口电路7104与存储器7103连接，接口电路7104可用于从存储器7103或其他装置接收数据，可用于向存储器7103或其他装置发送数据。例如，接口电路7104可读取存储器7103中存储的数据，并将该数据发送给处理器7101。
以上实施例描述中的通信设备7100可以是网络设备或者终端，但本公开中描述的通信设备7100 的范围并不限于此，通信设备7100的结构可以不受图7A的限制。通信设备可以是独立的设备或者可以是较大设备的一部分。例如所述通信设备可以是：1)独立的集成电路IC，或芯片，或，芯片系统或子系统；(2)具有一个或多个IC的集合，可选地，上述IC集合也可以包括用于存储数据，程序的存储部件；(3)ASIC，例如调制解调器(Modem)；(4)可嵌入在其他设备内的模块；(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；(6)其他等等。
图7B是本公开实施例提出的芯片7200的结构示意图。对于通信设备7100可以是芯片或芯片系统的情况，可以参见图7B所示的芯片7200的结构示意图，但不限于此。
芯片7200包括一个或多个处理器7201。芯片7200用于执行以上任一方法。
在一些实施例中，芯片7200还包括一个或多个接口电路7202。可选地，接口电路、接口、收发管脚等术语可以相互替换。在一些实施例中，芯片7200还包括用于存储数据的一个或多个存储器7203。可选地，全部或部分存储器7203可以处于芯片7200之外。可选地，接口电路7202与存储器7203连接，接口电路7202可以用于从存储器7203或其他装置接收数据，接口电路7202可用于向存储器7203或其他装置发送数据。例如，接口电路7202可读取存储器7203中存储的数据，并将该数据发送给处理器7201。
在一些实施例中，接口电路7202执行上述方法中的发送和/或接收等通信步骤(例如步骤S2102、步骤S2103，但不限于此)中的至少一者。接口电路7202执行上述方法中的发送和/或接收等通信步骤例如是指：接口电路7202执行处理器7201、芯片7200、存储器7203或收发器件之间的数据交互。在一些实施例中，处理器7201执行其他步骤(例如步骤S2101，但不限于此)中的至少一者。
虚拟装置、实体装置、芯片等各实施例中所描述的各模块和/或器件可以根据情况任意组合或者分离。可选地，部分或全部步骤也可以由多个模块和/或器件协作执行，此处不做限定。
本公开还提出存储介质，上述存储介质上存储有指令，当上述指令在通信设备7100上运行时，使得通信设备7100执行以上任一方法。可选地，上述存储介质是电子存储介质。可选地，上述存储介质是计算机可读存储介质，但不限于此，其也可以是其他装置可读的存储介质。可选地，上述存储介质可以是非暂时性(non-transitory)存储介质，但不限于此，其也可以是暂时性存储介质。
本公开还提出程序产品，上述程序产品被通信设备7100执行时，使得通信设备7100执行以上任一方法。可选地，上述程序产品是计算机程序产品。
本公开还提出计算机程序，当其在计算机上运行时，使得计算机执行以上任一方法。

Claims (19)

  1. 一种通信方法，其特征在于，所述方法包括：
    第一终端向第二终端发送物理直连链路共享信道PSSCH，所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；
    按照所述第一终端选择的第一资源，确定是否使用所述第一资源对所述PSSCH执行重传；
    所述第一资源用于所述PSSCH重传。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一终端确定满足以下至少一项：
    在第X个PSFCH时机以及第X+1个PSFCH时机之间存在第一资源；
    在第1个PSFCH时机到第X个PSFCH时机上，未接收到第二终端发送的所述PSSCH传输结果的混合自动重传请求HARQ信息，其中，所述X为大于或等于1，且小于N的整数。
  3. 根据权利要求1或2所述的方法，其特征在于，在满足第一条件的情况下，不使用所述第一资源进行所述PSSCH的重传；
    所述第一条件包括所述X的取值小于阈值。
  4. 根据权利要求3所述的方法，其特征在于，所述阈值采用如下至少一种方式确定：
    基于资源池的预配置信息确定；
    基于资源集合RB set的预配置信息确定；
    基于带宽部分BWP的预配置信息确定；
    基于预定义规则确定。
  5. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    在不满足第一条件的情况下，使用所述第一资源进行所述PSSCH的重传。
  6. 根据权利要求1至5中任意一项所述的方法，其特征在于，所述第一终端为所述PSSCH上传输的传输块TB选择的任意两个资源之间的时间间隔大于或等于最小时间间隔。
  7. 根据权利要求6所述的方法，其特征在于，所述最小时间间隔基于所述PSSCH所对应的第一个PSFCH时机确定。
  8. 一种通信方法，其特征在于，所述方法包括：
    第二终端接收第一终端发送的物理直连链路共享信道PSSCH；
    所述第二终端接收第一终端执行是否使用第一资源对所述PSSCH执行重传的所述PSSCH；
    其中，所述第一资源用于所述PSSCH重传；
    所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。
  9. 根据权利要求8所述的方法，其特征在于，在第X个PSFCH时机以及第X+1个PSFCH时机之间存在所述第一资源；
    所述方法还包括：
    所述第二终端在所述PSSCH对应N个物理直连链路反馈信道PSFCH时机上执行信道监听；
    在信道监听成功最早的PSFCH occasion上发送针对所述PSSCH传输结果的混合自动重传请求HARQ信息；
    其中，在第1个PSFCH时机到第X个PSFCH时机上，所述第二终端未向第一终端发送所述HARQ信息；
    其中，所述X为大于或等于1，且小于N的整数。
  10. 根据权利要求8或9所述的方法，其特征在于，在满足第一条件的情况下，不使用所述第一资源接收所述第一终端重传的所述PSSCH；
    所述第一条件包括所述X的取值小于阈值。
  11. 根据权利要求10所述的方法，其特征在于，所述阈值采用如下至少一种方式确定：
    基于资源池的预配置信息确定；
    基于资源集合RB set的预配置信息确定
    基于带宽部分BWP的预配置信息确定；
    基于预定义规则确定。
  12. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    在不满足第一条件的情况下，使用所述第一资源接收所述第一终端重传的所述PSSCH。
  13. 根据权利要求8至12中任意一项所述的方法，其特征在于，第一终端为所述PSSCH上传输 的传输块TB选择的任意两个资源之间的时间间隔大于或等于最小时间间隔。
  14. 根据权利要求13所述的方法，其特征在于，所述最小时间间隔基于所述PSSCH所对应的第一个PSFCH时机确定。
  15. 一种第一终端，其特征在于，包括：
    收发模块，向第二终端发送物理直连链路共享信道PSSCH，所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数；
    处理模块，用于按照所述第一终端选择的第一资源，确定是否使用所述第一资源对所述PSSCH执行重传；
    其中，所述第一资源用于所述PSSCH重传。
  16. 一种第二终端，其特征在于，包括：
    收发模块，用于接收第一终端发送的物理直连链路共享信道PSSCH，并接收第一终端执行是否使用第一资源对所述PSSCH执行重传的所述PSSCH；
    其中，所述第一资源用于所述PSSCH重传；
    所述PSSCH对应N个物理直连链路反馈信道PSFCH时机，N为大于或等于1的整数。
  17. 一种终端，其特征在于，包括：
    一个或多个处理器；
    其中，所述处理器用于执行权利要求1至7或8至14中任一项所述的通信方法。
  18. 一种通信系统，其特征在于，包括第一终端和第二终端，其中，所述第一终端被配置为实现权利要求1至7中任一项所述的通信方法，所述第二终端被配置为实现权利要求8至14中任一项所述的通信方法。
  19. 一种存储介质，所述存储介质存储有指令，其特征在于，当所述指令在通信设备上运行时，使得所述通信设备执行如权利要求1至7或8至14中任一项所述的通信方法。
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CN111865505A (zh) * 2019-04-30 2020-10-30 中国移动通信有限公司研究院 一种资源选择方法及设备
CN114557081A (zh) * 2019-10-25 2022-05-27 高通股份有限公司 利用侧行链路反馈转发的混合自动重传请求(harq)码本增强和物理上行链路控制信道(pucch)资源确定
WO2022222396A1 (zh) * 2021-04-21 2022-10-27 Oppo广东移动通信有限公司 资源配置方法、设备及存储介质
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CN111865505A (zh) * 2019-04-30 2020-10-30 中国移动通信有限公司研究院 一种资源选择方法及设备
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