WO2022188606A1 - 车联网中直通链路的资源选择方法及终端 - Google Patents

车联网中直通链路的资源选择方法及终端 Download PDF

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WO2022188606A1
WO2022188606A1 PCT/CN2022/076647 CN2022076647W WO2022188606A1 WO 2022188606 A1 WO2022188606 A1 WO 2022188606A1 CN 2022076647 W CN2022076647 W CN 2022076647W WO 2022188606 A1 WO2022188606 A1 WO 2022188606A1
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Prior art keywords
resource selection
duration
short
resource
time
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PCT/CN2022/076647
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English (en)
French (fr)
Inventor
李晨鑫
赵锐
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大唐高鸿智联科技(重庆)有限公司
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Priority to JP2023544783A priority Critical patent/JP2024504438A/ja
Priority to EP22766132.9A priority patent/EP4271090A4/en
Priority to KR1020237025005A priority patent/KR20230122141A/ko
Publication of WO2022188606A1 publication Critical patent/WO2022188606A1/zh
Priority to US18/361,659 priority patent/US20230388975A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the technical field of Internet of Vehicles communication, and in particular, to a resource selection method and terminal for a direct link in the Internet of Vehicles.
  • V2X Vehicle to Everything
  • V2X supports Vehicle to Vehicle (V2V), Vehicle to Infrastructure (V2I), Vehicle to Pedestrian (V2P) and Vehicle to Network (Vehicle to Network) Network, V2N) and other communication methods, for V2X equipment (such as pedestrian handheld terminal (Pedestrian User Equipment, P-UE), also known as Vulnerable Road Users (Vulnerable Road Users, VRU)) for which pedestrians cannot ensure continuous sufficient power supply, or need
  • P-UE pedestrian handheld terminal
  • Vulnerable Road Users Vulnerable Road Users
  • the power-saving UE when the power-saving UE has a service package to be sent, the UE performs autonomous resource selection of the sidelink (Sidelink), especially when a dynamic (aperiodic) service package (event trigger, etc.) arrives, the related art There is no resource selection mechanism for this situation, and communication reliability cannot be guaranteed.
  • Sidelink sidelink
  • a dynamic (aperiodic) service package event trigger, etc.
  • the embodiments of the present disclosure provide a resource selection method and terminal for a direct link in the Internet of Vehicles, so as to solve the V2X terminal for the power saving mechanism, when a dynamic service package arrives, there is no implementation mechanism in the related art for how the terminal performs resource selection.
  • the transmission reliability of dynamic service packets cannot be guaranteed.
  • the embodiments of the present disclosure provide a method for selecting resources for a direct link, which is applied to a terminal, including:
  • the sending resource for sending the service package is selected.
  • the determining the resource selection moment includes:
  • the first target parameter includes: a minimum short-term continuous sensing duration parameter or a short-term continuous sensing duration parameter.
  • the determining the resource selection moment includes:
  • the terminal performs continuous sensing and the duration of the continuous sensing is greater than or equal to the first target parameter, the resource selection time is equal to the service package arrival time;
  • the first target parameter includes: a minimum short-term continuous sensing duration parameter or a short-term continuous sensing duration parameter.
  • the determining the resource selection moment includes:
  • the resource selection moment is determined according to the duration of the short-term continuous perception that needs to be performed before the resource selection.
  • the determining the duration of the short-term continuous perception that needs to be performed before resource selection includes:
  • the second target parameter determine the duration of the short-term continuous perception that needs to be performed before resource selection
  • the second target parameter includes at least one of the following:
  • determining the resource selection moment according to the duration of the short-term continuous perception that needs to be performed before the resource selection includes:
  • the resource selection time is equal to the service package arrival time .
  • the continuous sensing has ended at the arrival time of the service package, and the duration of stopping sensing at the arrival time of the service package is less than or equal to K;
  • K is an integer greater than or equal to 0.
  • determining the resource selection moment according to the duration of the short-term continuous perception that needs to be performed before the resource selection includes:
  • the resource selection moment is determined according to the first duration and the duration of the short-term continuous perception that needs to be performed before the resource selection.
  • determining the resource selection moment according to the first duration and the duration of the short-term continuous perception that needs to be performed before the resource selection includes:
  • n selection is the time of resource selection
  • n is the arrival time of the service package
  • L is the duration of short-term continuous perception that needs to be performed before resource selection
  • M is the first duration, and M ⁇ 0
  • T proc,0 is the resource The processing time of the perception result obtained within the duration of the short-term continuous perception that needs to be performed before selection.
  • determining the resource selection moment according to the duration of the short-term continuous perception that needs to be performed before the resource selection includes:
  • n selection n + L
  • n selection n+L+T proc,0 ;
  • n selection n+LT proc, 0 ;
  • n selection is the time of resource selection
  • n is the arrival time of the service package
  • L is the duration of short-term continuous perception that needs to be performed before resource selection
  • T proc,0 is the duration of short-term continuous perception that needs to be performed before the resource selection The perception result obtained within the processing time.
  • the end moment of the short-term continuous perception is: resource selection moment.
  • the continuous perception includes at least one of the following:
  • Short-term continuous perception triggered by the sending of other service packets.
  • the method further includes:
  • a resource selection window is determined.
  • the resource selection window is: [n selection +T 1 , n selection +T 2 ];
  • T 1 is a parameter determined for the front edge of the resource selection window
  • T 2 is a parameter determined at the rear edge of the resource selection window
  • T 2 -T 1 is greater than or equal to the minimum number of candidate time-domain resources in the resource selection window
  • T 2 is less than or equal to the maximum number of time domain resources in the interval between two transmissions that can be indicated in the time domain resource allocation field of the through link control information
  • T 2 is less than or equal to the preset value.
  • the minimum number of candidate time-domain resources in the resource selection window is determined according to at least one of the following methods:
  • the method further includes:
  • the first processing includes: a re-evaluation mechanism and/or a preemption mechanism.
  • the method for determining the trailing edge of the resource selection window of the first process includes one of the following:
  • the rear edge of the resource selection window of the first process is determined as the absolute time of the rear edge of the resource selection window when initial resource selection is performed on the service package;
  • the trailing edge of the resource selection window of the first processing is determined as the time corresponding to the first preset duration after the initial resource selection time for the service package;
  • the time corresponding to the trailing edge of the resource selection window of the first process is less than or equal to the sum of the continuous sensing start time and the short-term continuous sensing maximum preset duration.
  • the end moment of the continuous perception is:
  • An embodiment of the present disclosure further provides a terminal, including: a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program implements the foregoing when executed by the processor The steps of the resource selection method for the through link.
  • An embodiment of the present disclosure also provides a terminal, including:
  • a determination module used to determine the resource selection moment when the service package arrives
  • a selection module configured to select a sending resource for sending a service packet at the resource selection moment.
  • Embodiments of the present disclosure further provide a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is configured to cause the processor to execute the foregoing method for selecting resources for a direct link. step.
  • the resource selection time is determined, and then the resource selection is performed according to the determined resource selection time, so as to ensure the transmission reliability of the service package.
  • FIG. 1 shows a schematic flowchart of a method for selecting a resource for a direct link according to an embodiment of the present disclosure
  • Fig. 2 shows the position schematic diagram under the first determination mode of resource selection moment
  • Fig. 3 shows the location schematic diagram under the second determination mode of resource selection moment
  • Fig. 4 shows the position schematic diagram under the third determination mode of resource selection moment
  • Fig. 5 is a schematic diagram of the location of the fourth determination method of the resource selection time
  • Fig. 6 shows the position schematic diagram of resource selection window
  • Figure 7 represents one of the positional schematic diagrams of the rear edge of the resource selection window under the re-evaluation mechanism
  • Figure 8 shows the second schematic diagram of the position of the rear edge of the resource selection window under the re-evaluation mechanism
  • FIG. 9 shows the third position schematic diagram of the rear edge of the resource selection window under the re-evaluation mechanism
  • FIG. 10 is a schematic diagram of a module of a terminal according to an embodiment of the present disclosure.
  • FIG. 11 is a structural diagram of a terminal according to an embodiment of the present disclosure.
  • the present disclosure is aimed at the V2X terminal of the power saving mechanism, when the dynamic service package arrives, there is no implementation mechanism for the terminal to select resources in the related art, and the transmission reliability of the dynamic service package cannot be guaranteed, and provides a direct link in the Internet of Vehicles.
  • a resource selection method and terminal for a road are aimed at the V2X terminal of the power saving mechanism, when the dynamic service package arrives, there is no implementation mechanism for the terminal to select resources in the related art, and the transmission reliability of the dynamic service package cannot be guaranteed, and provides a direct link in the Internet of Vehicles.
  • the method for selecting resources for a direct link according to an embodiment of the present disclosure, applied to a terminal includes:
  • Step 11 when the service package arrives, determine the resource selection time
  • service package may correspond to different specific descriptions used by different layers, and may be specifically described as: including but not limited to service packets (packet), transport blocks (Transport Block, TB), media access control Protocol control unit (Media Access Control Protocol Data Unit, MAC PDU), data packet (DATA), or data packet.
  • service packets packet
  • transport blocks Transport Block, TB
  • media access control Protocol control unit Media Access Control Protocol Data Unit, MAC PDU
  • data packet DATA
  • the specific situation is: when the MAC entity chooses to create a selected through link license for the transmission of a single MAC PDU (one or more times), the technical solution of the present disclosure is adopted.
  • Step 12 selecting a sending resource for service packet sending at the resource selection moment
  • the resource selection time is determined by determining the resource selection time, and then the resource selection is performed according to the determined resource selection time, so as to ensure the transmission reliability of the service package.
  • the resource selection in the embodiment of the present disclosure mainly refers to the resource selection of the terminal on the direct link during the V2X communication process.
  • the resource selection method is mainly applied to the terminal that can realize the power saving mechanism, That is to say, when the terminal works with the power saving mechanism, when the service package arrives, the terminal first determines the resource selection time, and then selects the sending resource for sending the service package at the resource selection time, so as to ensure the transmission of the service package. reliability.
  • an implementation manner of the step 11 is:
  • Step 111 obtaining the first target parameter corresponding to the service package
  • the first target parameter includes: the minimum short-term continuous sensing duration parameter or the short-term continuous sensing duration parameter; further, the minimum short-term continuous sensing duration parameter or the short-term continuous sensing duration parameter can be agreed by the protocol, Network-side configuration or pre-configuration.
  • Step 112 if the value of the first target parameter is zero, determine that the resource selection moment is the arrival moment of the service package;
  • the terminal can perform resource selection without performing sensing.
  • the minimum short-term continuous sensing duration parameter mentioned in this embodiment may be a single parameter configured independently.
  • the system configures the minimum short-term continuous sensing duration parameter to be a fixed value;
  • the duration parameter of continuous sensing is configured with multiple parameter values according to the different values of at least one of the priority, delay, reliability and service quality of the service package, that is, the minimum short-term continuous sensing duration parameter is one parameter at this time. List, the currently used minimum short-term persistent sensing duration parameter needs to be determined according to the service packet to be sent.
  • the minimum short-term continuous sensing duration parameter is determined according to the priority of the service package, the highest priority (higher than the pre-configured or network-side-configured priority threshold) does not perform sensing, and directly selects resources (and then performs sensing). + re-evaluation and/or preemption), other priorities perform sensing, specifically, the corresponding relationship between the priority and the minimum short-term continuous sensing duration parameter is shown in Table 1:
  • the minimum short-term continuous sensing duration parameter is determined according to the delay of the service package, when the delay requirement is lower than the pre-configured or network-side configured threshold, no sensing is performed or a shorter sensing is performed, and the sensing or execution is performed in other cases.
  • the corresponding relationship between the delay of the service package specifically refers to the service package delay budget (Packet Delay Budget, PDB)
  • PDB Packet Delay Budget
  • the short-term continuous sensing duration parameter mentioned in this embodiment may be a single parameter configured independently.
  • the system configures the short-term continuous sensing duration parameter to be a fixed value; or, the short-term continuous sensing
  • the duration parameter is configured with multiple parameter values according to the different values of at least one of the priority, delay, reliability and service quality of the service package, that is, the short-term persistent sensing duration parameter is a parameter list at this time, for example, The list indicates the short-term continuous sensing duration parameters corresponding to the priorities of different service packets, that is, the currently used minimum short-term continuous sensing duration parameters need to be determined according to the service packets to be sent.
  • step 11 is:
  • Step 113 obtaining the first target parameter corresponding to the service package
  • the first target parameter includes: a minimum short-term continuous sensing duration parameter or a short-term continuous sensing duration parameter.
  • the minimum short-term continuous sensing duration parameter or the short-term continuous sensing duration parameter may be agreed upon by a protocol, configured on the network side, or pre-configured.
  • the minimum short-term continuous sensing duration parameter may be a single parameter configured independently.
  • the system configures the minimum short-term continuous sensing duration parameter as a fixed value; or, the minimum short-term continuous sensing duration parameter is based on the service package.
  • the different values of at least one of the priority, delay, reliability, and service quality of the correspondingly configure multiple parameter values.
  • the duration of the short-term continuous sensing that needs to be performed before resource selection may be greater than or equal to the corresponding parameter value.
  • the short-term continuous sensing duration parameter may be a single parameter configured independently.
  • the system configures the short-term continuous sensing duration parameter as a fixed value; or, the short-term continuous sensing duration parameter is based on the priority and delay of the service package. For different values of at least one of reliability and service quality, multiple parameter values are correspondingly configured.
  • Step 114 If the terminal performs continuous sensing before the service package arrival time and the duration of the continuous sensing is greater than or equal to the first target parameter, the resource selection time is equal to the service package arrival time.
  • the terminal can directly perform resource selection when the service package arrives.
  • the continuous sensing should satisfy: the continuous sensing is performed in the service packet.
  • the arrival time has ended, and the duration of stopping perception at the arrival time of the service packet is less than or equal to K;
  • K is an integer greater than or equal to 0.
  • the other service package refers to other aperiodically generated service packages different from the currently to-be-sent service package.
  • step 11 another implementation manner of the step 11 is:
  • Step 115 determining the duration of the short-term continuous perception that needs to be performed before resource selection
  • duration of the short-term persistent perception should be an integer greater than or equal to 0, and the unit may be milliseconds (ms) or time domain resource granularity (for example, logical time slot/logical subframe or physical time slot/physical subframe). frame).
  • Step 116 Determine the resource selection moment according to the duration of the short-term continuous perception that needs to be performed before the resource selection.
  • the duration of the short-term continuous perception that needs to be performed before resource selection is determined first, and then the resource selection time is determined according to the determined duration of the short-term continuous perception. The determination can ensure that the terminal has obtained enough perception results during resource selection, thereby ensuring the accuracy of resource selection.
  • step 115 is:
  • the second target parameter determine the duration of the short-term continuous perception that needs to be performed before resource selection
  • the second target parameter includes at least one of the following:
  • the higher the priority of the service package the longer the duration of short-term continuous perception in order to ensure the accuracy of resource selection; or, the higher the priority of the service package, the greater the probability of other terminals to avoid The perceived time is shorter.
  • the higher the reliability of the service package the longer the duration of short-term continuous perception.
  • QoS Quality of Service
  • the minimum short-term persistent sensing duration parameter may be specified by a protocol, configured on the network side, or pre-configured.
  • the short-term continuous sensing duration to be performed before resource selection may be greater than or equal to the corresponding parameter value.
  • the short-term persistent sensing duration parameter may be agreed upon in a protocol, configured on the network side, or pre-configured.
  • the setting methods of the minimum short-term continuous sensing duration parameter and the short-term continuous sensing duration parameter in this embodiment are the same as the setting methods in the foregoing embodiments, and are not repeated here.
  • an implementation manner of the step 116 is:
  • the resource selection time is equal to the service package arrival time .
  • the terminal can directly perform resource selection when the service package arrives.
  • the continuous sensing should satisfy: the continuous sensing is performed in the service packet.
  • the arrival time has ended, and the duration of stopping perception at the arrival time of the service packet is less than or equal to K;
  • K is an integer greater than or equal to 0.
  • step 116 is:
  • the resource selection moment is determined according to the first duration and the duration of the short-term continuous perception that needs to be performed before the resource selection.
  • determining the resource selection moment according to the first duration and the duration of the short-term continuous perception that needs to be performed before the resource selection includes:
  • n selection is the time of resource selection
  • n is the arrival time of the service package
  • L is the duration of short-term continuous perception that needs to be performed before resource selection
  • M is the first duration, and M ⁇ 0
  • T proc,0 is the resource The processing time of the perception result obtained within the duration of the short-term continuous perception that needs to be performed before selection.
  • the end moment of the short-term continuous perception is: the resource selection moment.
  • the continuous perception mentioned in this embodiment includes at least one of the above-mentioned A11-A13.
  • the resource selection moment is n+20 logical time slots; when the continuous sensing includes periodic partial sensing, the first duration and the short-term continuous sensing are used.
  • Duration the schematic diagram of determining the resource selection moment is shown in Figure 4.
  • the resource selection moment is n+20 logical time slots; when the continuous sensing includes short-term continuous sensing triggered by the sending of other service packets, the first duration is used.
  • a schematic diagram of determining the resource selection moment is shown in FIG. 5 . At this time, the resource selection moment is n+20 logical time slots.
  • the terminal is performing continuous sensing at the time of the arrival of the service packet. If the terminal has continuous sensing being performed, the first duration of the continuous sensing that has been performed is obtained, and then based on the duration The resource selection time is determined. In this case, the perception that has been executed can be fully utilized, the perception time of the terminal can be reduced, the power consumption of the terminal can be saved, and the transmission efficiency of service packets can be improved at the same time.
  • step 116 is:
  • n selection n+L+T proc,0 ;
  • n selection n+LT proc,0 ;
  • n selection is the time of resource selection
  • n is the arrival time of the service package
  • L is the duration of short-term continuous perception that needs to be performed before resource selection
  • T proc,0 is the duration of short-term continuous perception that needs to be performed before the resource selection The perception result obtained within the processing time.
  • this situation does not consider whether the terminal has continuous perception at the time of the arrival of the service package. As long as the service package arrives, it needs to re-perceive the service package, so as to ensure the accuracy of perception, and then To ensure the accuracy of resource selection.
  • the end moment of the short-term continuous perception is: the resource selection moment.
  • the method further includes:
  • a resource selection window is determined.
  • the resource selection window is: [n selection +T 1 , n selection +T 2 ];
  • the resource selection window can be expressed as one of the following:
  • T 1 is a parameter determined for the front edge of the resource selection window
  • T 2 is a parameter determined at the rear edge of the resource selection window
  • T 2 -T 1 is greater than or equal to the minimum number of candidate time-domain resources in the resource selection window
  • M12 and T2 are less than or equal to the maximum number of time-domain resources in the interval between two transmissions that can be indicated in the time-domain resource allocation field of the sidelink control information (Sidelink Control Information);
  • the time domain resource allocation field in the Sidelink Control Information (Sidelink Control Information) format 1A (SCI Format 1A) defined by the 3rd Generation Partnership Project Release 16 (3rd Generation Partnership Project Release 16, 3GPP Release 16) can be
  • the maximum number of time domain resources indicated in the interval between two adjacent transmissions in the same service packet/TB (Transport Block) is 32 logical time slots. If T2 exceeds this number, the direct link control defined by 3GPP Release 16 will be used.
  • Information (Sidelink Control Information) format 1A (SCI Format 1A) (SCI Format 1A)
  • candidate resources with more than 32 logical time slots will not have any corresponding available sensing results. If they are selected as transmission resources, it will lead to reduced reliability, which is power saving Specific technical problems caused by insufficient perception results under the mechanism.
  • T2 is less than or equal to the preset value
  • the preset value may be agreed by a protocol, configured on the network side, or pre-configured.
  • the subcarrier spacing (SubCarrier Spacing, SCS) of the current bandwidth part (BandWidth Part, BWP) is 30KHz
  • T 1 2ms
  • T 1 4 logical time slots
  • T 2 -T 1 is equal to the minimum number of candidate time-domain resources in the resource selection window (here, 20 logical time slots).
  • the resource selection window is [n+20logical slots+4logical slots, n+20logical slots+4logical slots+20logical slots].
  • the minimum number of candidate time-domain resources in the resource selection window may be agreed upon in the protocol, configured on the network side, or pre-configured.
  • the minimum number of candidate time-domain resources in the resource selection window is determined according to at least one of the following methods:
  • the parameter of the resource selection window minimum candidate time-domain resource quantity parameter may be stipulated by the protocol, configured on the network side, or pre-configured. Further, the resource selection window minimum candidate time-domain resource quantity parameter may be a single parameter configured independently, or may correspond to different values of at least one of the priority, delay, reliability and service quality of the service package. Configure multiple parameter values, that is, the minimum number of candidate time-domain resources in the resource selection window at this time is a parameter list.
  • the list indicates the minimum number of candidate time-domain resources in the resource selection window corresponding to the priorities of different service packages, that is, That is to say, at this time, it is necessary to determine the minimum number of candidate time-domain resources in the currently used resource selection window according to the service packets to be sent.
  • the parameter of the minimum number of candidate time-domain resources corresponding to each transmission may be agreed upon in a protocol, configured on the network side, or pre-configured. Further, the parameter of the minimum number of candidate time domain resources corresponding to each transmission may be a single parameter configured independently, or may be based on different values of at least one of the priority, delay, reliability and quality of service of the service package. , correspondingly configure multiple parameter values, that is, the parameter of the minimum number of candidate time-domain resources sent each time is a parameter list, and the minimum number of candidate time-domain resources in the currently used resource selection window needs to be determined according to the service package to be sent.
  • the minimum number of candidate time-domain resources in the resource selection window should not be less than the minimum candidate time-domain resource number parameter corresponding to each transmission multiplied by the number of times the service package is sent, for example, each service package is sent twice, and each time the corresponding The parameter of the minimum number of candidate time-domain resources is 10ms, then the minimum number of time-domain resources in the resource selection window should not be less than 20ms (that is, greater than or equal to 20ms)
  • step 11 after the step 11, it further includes:
  • the first processing includes: a re-evaluation mechanism (Re-evaluation) and/or a pre-emption mechanism (Pre-emption).
  • Re-evaluation a re-evaluation mechanism
  • Pre-emption a pre-emption mechanism
  • the method for determining the trailing edge of the resource selection window during the first processing includes one of the following:
  • the rear edge of the resource selection window of the first process is determined as the absolute time of the rear edge of the resource selection window when initial resource selection is performed on the service package;
  • the trailing edge of the resource selection window of the first process is determined as the time corresponding to the first preset duration after the initial resource selection time for the service package;
  • the first preset duration may be agreed by a protocol, configured on the network side, or pre-configured, and the unit may be ms or a time domain resource (for example, a logical time slot).
  • the first preset duration P is 50 logical time slots. Therefore, the trailing edge of the resource selection window determined by the re-evaluation mechanism is no later than the resource selection time n+20 50 logical time slots after the logical time slot.
  • the time corresponding to the back edge of the resource selection window of the first process is less than or equal to the sum of the continuous sensing start time and the short-term continuous sensing maximum preset duration;
  • the maximum preset duration of short-term continuous sensing is 60 logical time slots. Therefore, the rear edge of the resource selection window for re-evaluation judgment is not later than the resource selection time n+20 38 (ie 60-12-20) logical time slots after logical time slots.
  • the rear edge of the resource selection window of the first processing is consistent with the rear edge of the resource selection window of the first processing determined by the existing mechanism
  • the length of the resource selection window of the first processing remains unchanged, and the trailing edge of the resource selection window of the first processing is directly moved backward.
  • the end time of the continuous perception is:
  • the V2X terminal working under the power-saving mechanism can determine the necessary sensing time before resource selection when the service package arrives, reduce the probability of collision with other terminal service transmission, and avoid a significant reduction in reliability;
  • the V2X terminal working under the power saving mechanism can sense based on other sending/receiving triggers of the terminal (including partial sensing triggered by periodic service, sensing triggered by discontinuous reception, sensing triggered by other service packets, etc.) And the necessary sensing time before resource selection is determined, and the timing of resource selection is determined. On the one hand, it solves the problem that the existing mechanism cannot be applied; The result of the perception, to achieve the maximum power saving under the condition of ensuring reliability;
  • the V2X device working under the power saving mechanism can determine the resource selection window corresponding to the arrival of the service package and the resource selection window of Re-evaluation/Pre-emption, which can ensure the performance of power saving and collision avoidance at the same time.
  • the resource selection method of the direct link mentioned in the present disclosure is mainly applied to the resource selection in the Internet of Vehicles, but is not limited to the Internet of Vehicles.
  • the resource selection in the cellular network also belongs to the protection scope of the present disclosure.
  • an embodiment of the present disclosure further provides a terminal 100, including:
  • the determining module 101 is used for determining the resource selection moment when the service package arrives;
  • the selection module 102 is configured to select a sending resource for sending a service packet at the resource selection moment.
  • the determining module 101 includes:
  • a first obtaining unit configured to obtain the first target parameter corresponding to the service package
  • a first determining unit configured to determine that the resource selection moment is the arrival moment of the service package if the value of the first target parameter is zero;
  • the first target parameter includes: a minimum short-term continuous sensing duration parameter or a short-term continuous sensing duration parameter.
  • the determining module 101 includes:
  • a second obtaining unit configured to obtain the first target parameter corresponding to the service package
  • the second determining unit is configured to, if the terminal performs continuous sensing before the arrival time of the service package, and the duration of the continuous sensing is greater than or equal to the first target parameter, the resource selection time is equal to the service package arrival time;
  • the first target parameter includes: a minimum short-term continuous sensing duration parameter or a short-term continuous sensing duration parameter.
  • the determining module 101 includes:
  • a third determining unit configured to determine the duration of the short-term continuous perception that needs to be performed before resource selection
  • the fourth determining unit is configured to determine the resource selection moment according to the duration of the short-term continuous perception that needs to be performed before the resource selection.
  • the third determining unit is used for:
  • the second target parameter determine the duration of the short-term continuous perception that needs to be performed before resource selection
  • the second target parameter includes at least one of the following:
  • the fourth determining unit is used for:
  • the resource selection time is equal to the service package arrival time .
  • the continuous sensing has ended at the arrival time of the service package, and the duration of stopping sensing at the arrival time of the service package is less than or equal to K;
  • K is an integer greater than or equal to 0.
  • the fourth determining unit is used for:
  • the resource selection moment is determined according to the first duration and the duration of the short-term continuous perception that needs to be performed before the resource selection.
  • the method of determining the resource selection moment according to the first duration and the duration of the short-term continuous perception that needs to be performed before the resource selection is specifically:
  • n selection is the time of resource selection
  • n is the arrival time of the service package
  • L is the duration of short-term continuous perception that needs to be performed before resource selection
  • M is the first duration, and M ⁇ 0
  • T proc,0 is the resource The processing time of the perception result obtained within the duration of the short-term continuous perception that needs to be performed before selection.
  • the fourth determining unit is used for:
  • n selection n + L
  • n selection n+L+T proc,0 ;
  • n selection n+LT proc, 0 ;
  • n selection is the time of resource selection
  • n is the arrival time of the service package
  • L is the duration of the short-term continuous perception that needs to be performed before resource selection
  • T proc is obtained within the duration of the short-term continuous perception that needs to be performed before the resource selection The perception result processing time.
  • the end moment of the short-term continuous perception is: resource selection moment.
  • the continuous perception includes at least one of the following:
  • Short-term continuous perception triggered by the sending of other service packets.
  • the method further includes:
  • a window determination module configured to determine a resource selection window according to the resource selection moment.
  • the resource selection window is: [n selection +T 1 , n selection +T 2 ];
  • T 1 is a parameter determined for the front edge of the resource selection window
  • T 2 is a parameter determined at the rear edge of the resource selection window
  • T 2 -T 1 is greater than or equal to the minimum number of candidate time-domain resources in the resource selection window
  • T 2 is less than or equal to the maximum number of time domain resources in the interval between two transmissions that can be indicated in the time domain resource allocation field of the through link control information
  • T 2 is less than or equal to the preset value.
  • the minimum number of candidate time-domain resources in the resource selection window is determined according to at least one of the following methods:
  • the method further includes:
  • a processing module configured to continue to perform continuous sensing, and perform the sending of service packets after performing the first processing on the sending resource
  • the first processing includes: a re-evaluation mechanism and/or a preemption mechanism.
  • the method for determining the trailing edge of the resource selection window of the first process includes one of the following:
  • the rear edge of the resource selection window of the first process is determined as the absolute time of the rear edge of the resource selection window when initial resource selection is performed on the service package;
  • the trailing edge of the resource selection window of the first processing is determined as the time corresponding to the first preset duration after the initial resource selection time for the service package;
  • the time corresponding to the trailing edge of the resource selection window of the first process is less than or equal to the sum of the continuous sensing start time and the short-term continuous sensing maximum preset duration.
  • the end time of the continuous perception is:
  • the terminal embodiment is a terminal corresponding to the above method embodiment one-to-one, and all the implementation manners in the above method embodiment are applicable to the terminal embodiment, and the same technical effect can also be achieved.
  • an embodiment of the present disclosure further provides a terminal 110, including a processor 111, a transceiver 112, a memory 113, and a program stored in the memory 113 and running on the processor 111; wherein , the transceiver 112 is connected to the processor 111 and the memory 113 through a bus interface, wherein the processor 111 is used to read the program in the memory and perform the following processes:
  • the sending resource for sending the service package is selected.
  • the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by the processor 111 and various circuits of the memory represented by the memory 113 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 112 may be a number of elements, including transmitters and transceivers, that provide a means for communicating with various other devices over a transmission medium.
  • the user interface 114 may also be an interface capable of externally connecting a required device, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 111 is responsible for managing the bus architecture and general processing, and the memory 113 may store data used by the processor 111 when performing operations.
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • the first target parameter includes: a minimum short-term continuous sensing duration parameter or a short-term continuous sensing duration parameter.
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • the terminal performs continuous sensing and the duration of the continuous sensing is greater than or equal to the first target parameter, the resource selection time is equal to the service package arrival time;
  • the first target parameter includes: a minimum short-term continuous sensing duration parameter or a short-term continuous sensing duration parameter.
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • the resource selection moment is determined according to the duration of the short-term continuous perception that needs to be performed before the resource selection.
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • the second target parameter determine the duration of the short-term continuous perception that needs to be performed before resource selection
  • the second target parameter includes at least one of the following:
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • the resource selection time is equal to the service package arrival time .
  • the continuous sensing has ended at the arrival time of the service packet, and the duration of stopping sensing at the arrival time of the service packet is less than or equal to K;
  • K is an integer greater than or equal to 0.
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • the resource selection moment is determined according to the first duration and the duration of the short-term continuous perception that needs to be performed before the resource selection.
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • n selection is the time of resource selection
  • n is the arrival time of the service package
  • L is the duration of short-term continuous perception that needs to be performed before resource selection
  • M is the first duration, and M ⁇ 0
  • T proc,0 is the resource The processing time of the perception result obtained within the duration of the short-term continuous perception that needs to be performed before selection.
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • n selection n + L
  • n selection n+L+T proc,0 ;
  • n selection n+LT proc, 0 ;
  • n selection is the time of resource selection
  • n is the arrival time of the service package
  • L is the duration of the short-term continuous perception that needs to be performed before resource selection
  • T proc is obtained within the duration of the short-term continuous perception that needs to be performed before the resource selection The perception result processing time.
  • the end moment of the short-term continuous perception is: the resource selection moment.
  • the continuous perception includes at least one of the following:
  • Short-term continuous perception triggered by the sending of other service packets.
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • a resource selection window is determined.
  • the resource selection window is: [n selection +T 1 , n selection +T 2 ];
  • T 1 is a parameter determined for the front edge of the resource selection window
  • T 2 is a parameter determined at the rear edge of the resource selection window
  • T 2 -T 1 is greater than or equal to the minimum number of candidate time-domain resources in the resource selection window
  • T 2 is less than or equal to the maximum number of time domain resources in the interval between two transmissions that can be indicated in the time domain resource allocation field of the through link control information
  • T 2 is less than or equal to the preset value.
  • the minimum number of candidate time-domain resources in the resource selection window is determined according to at least one of the following methods:
  • the processor 111 is configured to read the program in the memory, and also perform the following processes:
  • the first processing includes: a re-evaluation mechanism and/or a preemption mechanism.
  • the method for determining the trailing edge of the resource selection window of the first process includes one of the following:
  • the rear edge of the resource selection window of the first process is determined as the absolute time of the rear edge of the resource selection window when initial resource selection is performed on the service package;
  • the trailing edge of the resource selection window of the first processing is determined as the time corresponding to the first preset duration after the initial resource selection time for the service package;
  • the time corresponding to the trailing edge of the resource selection window of the first process is less than or equal to the sum of the continuous sensing start time and the short-term continuous sensing maximum preset duration.
  • the end time of the continuous perception is:
  • Embodiments of the present disclosure further provide a readable storage medium, where a computer program is stored on the readable storage medium, wherein, when the program is executed by a processor, the steps of the method for resource selection of a cut-through link applied to a terminal are implemented.
  • An embodiment of the present disclosure further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the above-mentioned resource selection of the cut-through link
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is configured to run a program or an instruction to implement the above-mentioned resource selection of the cut-through link
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip, or the like.
  • modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware.
  • the determination module may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned device to be implemented, in addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device may Call and execute the function of the above determined module.
  • the implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuit (ASIC), or, one or Multiple microprocessors (digital signal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc.
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processors
  • FPGA Field Programmable Gate Array
  • the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call program codes.
  • CPU central processing unit
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip

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Abstract

本公开提供了一种车联网中直通链路的资源选择方法及终端，涉及车联网通信技术领域。该资源选择方法，应用于终端，包括:当业务包到达时，确定资源选择时刻；在所述资源选择时刻选择进行业务包发送的发送资源。

Description

车联网中直通链路的资源选择方法及终端
相关申请的交叉引用
本公开主张在2021年3月10日在中国提交的中国专利申请号No.202110262544.5的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及车联网通信技术领域，特别涉及一种车联网中直通链路的资源选择方法及终端。
背景技术
车联网(Vehicle to Everything，V2X)支持车到车(Vehicle to Vehicle，V2V)、车到基础设施(Vehicle to Infrastructure，V2I)、车到行人(Vehicle to Pedestrian，V2P)和车到网络(Vehicle to Network，V2N)等通信方式，针对行人无法确保持续充足供电的V2X设备(如行人手持终端(Pedestrian User Equipment，P-UE)，也称弱势道路使用者(Vulnerable Road Users，VRU))，或者需要进行节能的情况(如车辆续航能力不足或者路侧设备在车辆数量较少时不必持续工作)，上述情况下需要考虑UE节电机制。但另一方面，在节电UE有业务包待发送时，UE进行直通链路(Sidelink)的自主资源选择时，特别是动态(非周期)业务包(事件触发等)到达时，相关技术中并没有针对此种情况下的资源选择机制，无法保证通信可靠性。
发明内容
本公开实施例提供一种车联网中直通链路的资源选择方法及终端，以解决针对节电机制的V2X终端，当动态业务包到达时，相关技术中没有终端如何进行资源选择的实现机制，无法保证动态业务包的传输可靠性的问题。
为了解决上述技术问题，本公开实施例提供一种直通链路的资源选择方法，应用于终端，包括：
当业务包到达时，确定资源选择时刻；
在所述资源选择时刻选择进行业务包发送的发送资源。
可选地，所述确定资源选择时刻，包括：
获取所述业务包对应的第一目标参数；
若所述第一目标参数的取值为零，则确定资源选择时刻为所述业务包到达时刻；
其中，所述第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数。
可选地，所述确定资源选择时刻，包括：
获取所述业务包对应的第一目标参数；
若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知的时长大于或等于所述第一目标参数，则资源选择时刻等于业务包到达时刻；
其中，所述第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数。
可选地，所述确定资源选择时刻，包括：
确定资源选择前需要执行的短时持续感知的时长；
根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻。
具体地，所述确定资源选择前需要执行的短时持续感知的时长，包括：
根据第二目标参数，确定资源选择前需要执行的短时持续感知的时长；
其中，所述第二目标参数包括以下至少一项：
业务包的优先级；
业务包的时延；
业务包的可靠性；
业务包的服务质量；
最小短时持续感知时长参数；
短时持续感知时长参数。
进一步地，所述根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻，包括：
若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知 的时长大于或等于所述资源选择前需要执行的短时持续感知的时长，则资源选择时刻等于业务包到达时刻。
可选地，所述连续感知在所述业务包到达时刻已经结束，且在所述业务包到达时刻停止感知的时长小于或等于K；
其中，K为大于或等于0的整数。
进一步地，所述根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻，包括：
确定业务包到达时刻终端正在执行的连续感知的第一时长；
根据所述第一时长以及所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻。
具体地，所述根据所述第一时长以及所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻，包括：
根据以下公式中的一项确定资源选择时刻；
Figure PCTCN2022076647-appb-000001
Figure PCTCN2022076647-appb-000002
Figure PCTCN2022076647-appb-000003
其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前需要执行的短时持续感知的时长；M为第一时长，且M≥0；T proc,0为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
进一步地，所述根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻，包括：
根据以下公式中的一项确定资源选择时刻；
n selection＝n+L；
n selection＝n+L+T proc,0；
n selection＝n+L-T proc,0；
其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前需要执行的短时持续感知的时长；T proc,0为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
可选地，所述短时持续感知的结束时刻为：资源选择时刻。
具体地，所述连续感知包括以下至少一项：
非连续接收开启执行的感知；
周期性的部分感知；
其他业务包发送触发的短时持续感知。
可选地，在所述确定资源选择时刻之后，还包括：
根据所述资源选择时刻，确定资源选择窗口。
进一步地，所述资源选择窗口为：[n selection+T 1，n selection+T 2]；
其中，T 1为资源选择窗口前沿确定参数；T 2为资源选择窗口后沿确定参数；且满足以下至少一项：
T 2-T 1大于或等于资源选择窗最小候选时域资源数量；
T 2小于或等于直通链路控制信息时域资源分配域中可指示的两次发送之间间隔的最大时域资源数量；
T 2小于或等于预设值。
具体地，所述资源选择窗最小候选时域资源数量根据以下方式中的至少一项确定：
根据资源选择窗最小候选时域资源数量参数确定；
根据每次发送对应的最小候选时域资源数量参数确定；
根据业务包的优先级确定；
根据业务包的时延确定；
根据业务包的可靠性确定；
根据业务包的服务质量确定。
可选地，在所述资源选择时刻选择进行业务包发送的发送资源之后，还包括：
继续执行持续感知，对所述发送资源执行第一处理之后，执行业务包的发送；
其中，所述第一处理包括：重评估机制和/或抢占机制。
进一步地，所述第一处理的资源选择窗口后沿的确定方式包括以下一项：
所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时的资源选择窗口的后沿绝对时刻；
所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时刻后的第一预设时长对应的时刻；
所述第一处理的资源选择窗口后沿所对应的时刻小于或等于持续感知开始时刻与短时持续感知最大预设时长之和。
可选地，所述持续感知的结束时刻为：
所述第一处理的结束时刻。
本公开实施例还提供一种终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现上述的直通链路的资源选择方法的步骤。
本公开实施例还提供一种终端，包括：
确定模块，用于当业务包到达时，确定资源选择时刻；
选择模块，用于在所述资源选择时刻选择进行业务包发送的发送资源。
本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行上述的直通链路的资源选择方法的步骤。
本公开的有益效果是：
上述方案，在业务包到达时，通过进行资源选择时刻的确定，进而根据确定的资源选择时刻进行资源的选择，以此保证了业务包的传输可靠性。
附图说明
图1表示本公开实施例的直通链路的资源选择方法的流程示意图；
图2表示资源选择时刻的第一种确定方式下的位置示意图；
图3表示资源选择时刻的第二种确定方式下的位置示意图；
图4表示资源选择时刻的第三种确定方式下的位置示意图；
图5表示资源选择时刻的第四种确定方式下的位置示意图
图6表示资源选择窗口的位置示意图；
图7表示重评估机制下的资源选择窗口后沿的位置示意图之一；
图8表示重评估机制下的资源选择窗口后沿的位置示意图之二；
图9表示重评估机制下的资源选择窗口后沿的位置示意图之三；
图10表示本公开实施例的终端的模块示意图；
图11表示本公开实施例的终端的结构图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图及具体实施例对本公开进行详细描述。
本公开针对节电机制的V2X终端，当动态业务包到达时，相关技术中没有终端如何进行资源选择的实现机制，无法保证动态业务包的传输可靠性的问题，提供一种车联网中直通链路的资源选择方法及终端。
如图1所示，本公开实施例的直通链路的资源选择方法，应用于终端，包括：
步骤11，当业务包到达时，确定资源选择时刻；
需要说明的是，该业务包可对应于不同的层所用的不同的具体描述，具体地可描述为：包括但不限于业务包(packet)，传输块(Transport Block，TB)，媒体接入控制协议控制单元(Media Access Control Protocol Data Unit，MAC PDU)，数据包(DATA)，或者数据分组。
以MAC PDU为例的特定的情况为：当MAC实体选择为单个MAC PDU的发送(1次或者多次)创建选择的直通链路许可时，采用本公开的技术方案。
步骤12，在所述资源选择时刻选择进行业务包发送的发送资源；
需要说明的是，在业务包到达时，通过进行资源选择时刻的确定，进而根据确定的资源选择时刻进行资源的选择，以此保证了业务包的传输可靠性。
需要说明的是，本公开实施例的资源选择主要指的是V2X通信过程中，针对终端在直通链路上的资源选择，进一步地，该资源选择方法主要应用于能够实现节电机制的终端，也就是说，在终端采用节电机制工作的情况下，当业务包到达时，终端先确定资源选择时刻，然后在资源选择时刻选择进行业务包发送的发送资源，以此能够保证业务包的传输可靠性。
下面对本公开的具体实现过程进行详细说明如下；
可选地，本申请的另一实施例中，所述步骤11的一种实现方式为：
步骤111，获取所述业务包对应的第一目标参数；
需要说明的是，该第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数；进一步地，该最小短时持续感知时长参数或短时持续感知时长参数可以由协议约定、网络侧配置或预配置。
步骤112，若所述第一目标参数的取值为零，则确定资源选择时刻为所述业务包到达时刻；
需要说明的是，此种情况下，若终端获取到最小短时持续感知时长参数或短时持续感知时长参数的取值为零，则说明终端无需执行感知，即可进行资源选择。
进一步需要说明的是，本实施例所说的最小短时持续感知时长参数可以为独立配置的单个参数，例如，系统配置该最小短时持续感知时长参数为一个固定的值；或者，该最小短时持续感知时长参数依据业务包的优先级、时延、可靠性和服务质量中的至少一项的不同取值，对应配置多个参数值，即此时最小短时持续感知时长参数为一个参数列表，需要按照待发送的业务包确定当前所用的最小短时持续感知时长参数。
例如，当最小短时持续感知时长参数依据业务包的优先级确定时，最高优先级(高于预配置或者网络侧配置的优先级门限时)不执行感知，直接进行选择资源(之后再执行感知+重评估和/或抢占)，其他优先级执行感知，具体地，优先级与最小短时持续感知时长参数的对应关系如表1所示：
表1 优先级与最小短时持续感知时长参数对应关系表
Figure PCTCN2022076647-appb-000004
Figure PCTCN2022076647-appb-000005
例如，当最小短时持续感知时长参数依据业务包的时延确定时，当时延要求低于预配置或者网络侧配置的门限时，不进行感知或者进行更短的感知，其他情况执行感知或者执行更长的感知，具体地，业务包的时延(具体指的是业务包时延预算(Packet Delay Budge，PDB))与最小短时持续感知时长参数的对应关系如表2至表4所示：
表2 PDB与最小短时持续感知时长参数的第一种对应关系表
Figure PCTCN2022076647-appb-000006
表3 PDB与最小短时持续感知时长参数的第二种对应关系表
Figure PCTCN2022076647-appb-000007
表4 PDB与最小短时持续感知时长参数的第三种对应关系表
Figure PCTCN2022076647-appb-000008
进一步需要说明的是，本实施例所说的短时持续感知时长参数可以为独立配置的单个参数，例如，系统配置该短时持续感知时长参数为一个固定的值；或者，该短时持续感知时长参数依据业务包的优先级、时延、可靠性和服务质量中的至少一项的不同取值，对应配置多个参数值，即此时短时持续感知时长参数为一个参数列表，例如，该列表中指示不同的业务包的优先级 对应的短时持续感知时长参数，也就是说，此时需要按照待发送的业务包确定当前所用的最小短时持续感知时长参数。
可选地，本申请的又一实施例中，所述步骤11的另一种实现方式为：
步骤113，获取所述业务包对应的第一目标参数；
具体地，该第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数。需要说明的是，进一步地，该最小短时持续感知时长参数或短时持续感知时长参数可以由协议约定、网络侧配置或预配置。具体地，该最小短时持续感知时长参数可以为独立配置的单个参数，例如，系统配置该最小短时持续感知时长参数为一个固定的值；或者，该最小短时持续感知时长参数依据业务包的优先级、时延、可靠性和服务质量中的至少一项的不同取值，对应配置多个参数值。根据最小短时持续感知时长参数确定资源选择前需要执行的短时持续感知的时长时，资源选择前需要执行的短时持续感知的时长大于或者等于对应参数值即可。该短时持续感知时长参数可以为独立配置的单个参数，例如，系统配置该短时持续感知时长参数为一个固定的值；或者，该短时持续感知时长参数依据业务包的优先级、时延、可靠性和服务质量中的至少一项的不同取值，对应配置多个参数值。
步骤114，若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知的时长大于或等于所述第一目标参数，则资源选择时刻等于业务包到达时刻。
这里需要说明的是，若终端在业务包到达之前已经执行了连续感知，且连续感知的时长已经大于或等于最小短时持续感知时长参数或短时持续感知时长参数，则说明之前的连续感知所获取的感知结果已经能够满足终端进行资源选择的需求，则终端可以直接在业务包到达时刻进行资源选择。
进一步需要说明的是，为了保证业务包到达之前所获取的连续感知的感知结果能够准确的应用于本次待发送的业务包的资源选择，则该连续感知应该满足：连续感知在所述业务包到达时刻已经结束，且在所述业务包到达时刻停止感知的时长小于或等于K；
其中，K为大于或等于0的整数。
进一步需要说明的是，本实施例中所提到的连续感知包括以下至少一项：
A11、非连续接收开启执行的感知；
A12、周期性的部分感知；
A13、其他业务包发送触发的短时持续感知；
进一步需要说明的是，该其他业务包指的是与当前待发送的业务包不同的其他非周期性生成的业务包。
可选地，本申请的再一实施例中，所述步骤11的另一种实现方式为：
步骤115，确定资源选择前需要执行的短时持续感知的时长；
需要说明的是，该短时持续感知的时长应大于或等于0的整数，其单位可以为毫秒(ms)或者时域资源粒度(例如，逻辑时隙/逻辑子帧或者物理时隙/物理子帧)。
步骤116，根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻。
需要说明的是，此种实现方式下，在业务包到达时，先进行资源选择前需要执行的短时持续感知的时长的确定，然后依据确定的短时持续感知的时长，再进行资源选择时刻的确定，能够确保在资源选择时终端已经获取足够的感知结果，进而能够保证资源选择的准确性。
具体地，所述步骤115的进一步地实现方式为：
根据第二目标参数，确定资源选择前需要执行的短时持续感知的时长；
具体地，所述第二目标参数包括以下至少一项：
B11、业务包的优先级；
例如，业务包的优先级越高，为保证资源选择的准确性，则短时持续感知的时长越大；或者，业务包的优先级越高，其他终端避让的概率越大，则短时持续感知的时长越小。
B12、业务包的时延；
例如，业务包的时延越低，短时持续感知的时长越小。
B13、业务包的可靠性；
例如，业务包的可靠性越高，短时持续感知的时长越大。
B14、业务包的服务质量(Quality of Service，QoS)；
例如，业务包的服务质量越高，短时持续感知的时长越大。
B15、最小短时持续感知时长参数；
需要说明的是，该最小短时持续感知时长参数可以由协议约定、网络侧配置或预配置。根据最小短时持续感知时长参数确定资源选择前需要执行的短时持续感知的时长时，资源选择前需要执行的短时持续感知时长大于或者等于对应参数值即可。
B16、短时持续感知时长参数；
需要说明的是，该短时持续感知时长参数可以由协议约定、网络侧配置或预配置。
需要说明的是，本实施例中的最小短时持续感知时长参数和短时持续感知时长参数的设置方式与上述实施例中的设置方式相同，在此不再赘述。
进一步需要说明的是，可选地，本申请的另一实施例中，所述步骤116的一种实现方式为：
若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知的时长大于或等于所述资源选择前需要执行的短时持续感知的时长，则资源选择时刻等于业务包到达时刻。
这里需要说明的是，若终端在业务包到达之前已经执行了连续感知，且连续感知的时长已经大于或等于需要执行的短时持续感知的时长，则说明之前的连续感知所获取的感知结果已经能够满足终端进行资源选择的需求，则终端可以直接在业务包到达时刻进行资源选择。
进一步需要说明的是，为了保证业务包到达之前所获取的连续感知的感知结果能够准确的应用于本次待发送的业务包的资源选择，则该连续感知应该满足：连续感知在所述业务包到达时刻已经结束，且在所述业务包到达时刻停止感知的时长小于或等于K；
其中，K为大于或等于0的整数。
例如，如图2所示，终端针对周期性业务、非连续接收开启(DRX on)或者其他非周期性业务的感知时段的时长大于或等于需要执行的短时持续感知的时长(L)，且停止感知的时长(为4个逻辑时隙)小于K＝5个逻辑时隙，则资源选择时刻便为业务包到达时刻n。
进一步需要说明的是，可选地，本申请的另一实施例中，所述步骤116 的另一种实现方式为：
确定业务包到达时刻终端正在执行的连续感知的第一时长；
根据所述第一时长以及所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻。
进一步需要说明的是，所述根据所述第一时长以及所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻，包括：
根据以下公式中的一项确定资源选择时刻；
公式一、
Figure PCTCN2022076647-appb-000009
公式二、
Figure PCTCN2022076647-appb-000010
公式三、
Figure PCTCN2022076647-appb-000011
其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前需要执行的短时持续感知的时长；M为第一时长，且M≥0；T proc,0为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
进一步需要说明的是，在实施例下，该短时持续感知的结束时刻为：资源选择时刻。
本实施例中所提到的连续感知包括上述的A11-A13中的至少一项。
例如，以需要执行的短时持续感知的时长为32个逻辑时隙为例，当连续感知包括非连续接收开启执行的感知，利用所述第一时长以及所述短时持续感知的时长，确定资源选择时刻的示意图如图3所示，此时，资源选择时刻为n+20个逻辑时隙；当连续感知包括周期性的部分感知，利用所述第一时长以及所述短时持续感知的时长，确定资源选择时刻的示意图如图4所示，此时，资源选择时刻为n+20个逻辑时隙；当连续感知包括其他业务包发送触发的短时持续感知，利用所述第一时长以及所述短时持续感知的时长，确定资源选择时刻的示意图如图5所示，此时，资源选择时刻为n+20个逻辑时隙。
需要说明的是，此种情况是考虑在业务包到达时刻终端是否有正在执行的连续感知，若终端有正在执行的连续感知，则获取到已经执行的连续感知的第一时长，然后依据该时长确定得到资源选择时刻，此种情况下能够充分利用已经执行的感知，能够减少终端的感知时间，节省终端功耗，同时提升 了业务包的发送效率。
进一步需要说明的是，可选地，本申请的另一实施例中，所述步骤116的另一种实现方式为：
根据以下公式中的一项确定资源选择时刻；
公式四、n selection＝n+L；
公式五、n selection＝n+L+T proc,0；
公式六、n selection＝n+L-T proc,0；
其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前需要执行的短时持续感知的时长；T proc,0为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
需要说明的是，此种情况是不考虑在业务包到达时刻终端是否有正在执行的连续感知，只要业务包到达，都需要重新针对该业务包进行感知，以此能够保证感知的准确性，进而能够保证资源选择的准确性。
进一步地，在实施例下，该短时持续感知的结束时刻为：资源选择时刻。
进一步还需要说明的是，在上述实施例的基础上，在所述确定资源选择时刻之后，还包括：
根据所述资源选择时刻，确定资源选择窗口。
具体地，所述资源选择窗口为：[n selection+T 1，n selection+T 2]；
结合公式一至六，资源选择窗口可表示为以下一项：
S11、
Figure PCTCN2022076647-appb-000012
S12、
Figure PCTCN2022076647-appb-000013
S13、
Figure PCTCN2022076647-appb-000014
S14、[n+L+T 1,n+L+T 2]；
S15、[n+L+T proc,0+T 1,n+L+T proc,0+T 2]；
S16、[n+L-T proc,0+T 1,n+L-T proc,0+T 2]；
其中，T 1为资源选择窗口前沿确定参数；T 2为资源选择窗口后沿确定参数；且满足以下至少一项：
M11、T 2-T 1大于或等于资源选择窗最小候选时域资源数量；
M12、T 2小于或等于直通链路控制信息(Sidelink Control Information)时域资源分配域中可指示的两次发送之间间隔的最大时域资源数量；
例如，第三代合作伙伴计划候选版本16(3rd Generation Partnership Project Release 16，3GPP Release 16)定义的直通链路控制信息(Sidelink Control Information)格式1A(SCI Format 1A)中的时域资源分配域可指示的同一业务包/TB(Transport Block)中相邻两次发送之间间隔的最大时域资源数量为32个逻辑时隙，T2如果超过该数量，则以3GPP Release 16定义的直通链路控制信息(Sidelink Control Information)格式1A(SCI Format 1A)，超过32个逻辑时隙的候选资源，将无任何对应可用感知结果，如被选为发送资源，则会导致可靠性降低，这是节电机制下感知结果不足所造成的特定技术问题。
M13、T 2小于或等于预设值；
具体地，该预设值可以由协议约定、网络侧配置或预配置。
例如，如图6所示，当前带宽部分(BandWidth Part，BWP)的子载波间隔(SubCarrier Spacing，SCS)为30KHz，T 1＝2ms，即T 1等于4个逻辑时隙，以T 2-T 1等于资源选择窗最小候选时域资源数量(此处为20个逻辑时隙)为例，则资源选择窗为[n+20logical slots+4logical slots，n+20logical slots+4logical slots+20logical slots]。
需要说明的是，该资源选择窗最小候选时域资源数量可以由协议约定、网络侧配置或预配置。
进一步地，所述资源选择窗最小候选时域资源数量根据以下方式中的至少一项确定：
C11、根据资源选择窗最小候选时域资源数量参数确定；
需要说明的是，该资源选择窗最小候选时域资源数量参数可以由协议约定、网络侧配置或预配置。进一步地，该资源选择窗最小候选时域资源数量参数可以是独立配置的单个参数，也可以依据业务包的优先级、时延、可靠性和服务质量中的至少一项的不同取值，对应配置多个参数值，即此时资源选择窗最小候选时域资源数量为一个参数列表，例如，该列表中指示不同的业务包的优先级对应的资源选择窗最小候选时域资源数量，也就是说，此时 需要按照待发送的业务包确定当前所用的资源选择窗最小候选时域资源数量。
C12、根据每次发送对应的最小候选时域资源数量参数确定；
需要说明的是，该每次发送对应的最小候选时域资源数量参数可以由协议约定、网络侧配置或预配置。进一步地，该每次发送对应的最小候选时域资源数量参数可以是独立配置的单个参数，也可以依据业务包的优先级、时延、可靠性和服务质量中的至少一项的不同取值，对应配置多个参数值，即此时每次发送对应的最小候选时域资源数量参数为一个参数列表，需要按照待发送的业务包确定当前所用的资源选择窗最小候选时域资源数量，具体地，该资源选择窗最小候选时域资源数量应不小于每次发送对应的最小候选时域资源数量参数乘以业务包的发送次数，例如，每个业务包发送2次，每次发送对应的最小候选时域资源数量参数为10ms，则资源选择窗最小时域资源数量应不小于应20ms(即大于或等于20ms)
C13、根据业务包的优先级确定；
C14、根据业务包的时延确定；
C15、根据业务包的可靠性确定；
C16、根据业务包的服务质量确定。
进一步地，在上述任一实施例的基础上，本申请另一实施例中，在所述步骤11之后，还包括：
继续执行持续感知，对所述发送资源执行第一处理之后，执行业务包的发送；
其中，所述第一处理包括：重评估机制(Re-evaluation)和/或抢占机制(Pre-emption)。
需要说明的是，本公开实施例中所说的重评估机制指的是：对已经被选择、但尚未被直通链路控制信息(SCI)指示预约的资源，至少在所述资源之前的T 3时刻(T 3＝T 1)进行重评估判断，确定该资源是否可用，如不可用，则进行重选；在本公开的实施例中，重评估机制还可为改进的重评估机制，指：对已经被选择的资源，无论是否已被直通链路控制信息(SCI)指示预约，至少在所述资源之前的T 3时刻(T 3＝T 1)进行重评估判断，确定该资源是否可用，如不可用，则进行重选；
抢占机制指的是：对已经被选择、且已经被SCI指示预约的资源，至少在所述资源之前的T 3时刻(T 3＝T 1)进行抢占判断，确定该资源是否被更高优先级业务包发送所抢占，或者被高于配置的抢占机制触发门限的更高优先级业务包发送所抢占，如被抢占，则进行重选。
进一步需要说明的是，所述第一处理时的资源选择窗口后沿的确定方式包括以下一项：
D11、所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时的资源选择窗口的后沿绝对时刻；
例如，以重评估机制为例，如图7所示，重评估机制判断的资源选择窗后沿为资源选择时刻n+T 2’(T 2’＝T 2,T 2为初始资源选择时资源选择窗后沿确定参数)。
D12、所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时刻后的第一预设时长对应的时刻；
需要说明的是，该第一预设时长为可以由协议约定、网络侧配置或预配置，其单位可以为ms或者时域资源(例如，逻辑时隙)。
例如，以重评估机制为例，如图8所示，第一预设时长P为50个逻辑时隙，因此，重评估机制判断的资源选择窗后沿不晚于资源选择时刻n+20个逻辑时隙之后的50个逻辑时隙。
D13、所述第一处理的资源选择窗口后沿所对应的时刻小于或等于持续感知开始时刻与短时持续感知最大预设时长之和；
例如，以重评估机制为例，如图9所示，短时持续感知最大预设时长为60个逻辑时隙，因此，重评估判断的资源选择窗后沿不晚于资源选择时刻n+20个逻辑时隙之后的38(即60-12-20)个逻辑时隙。
D14、所述第一处理的资源选择窗口后沿与现有机制所确定的第一处理的资源选择窗口后沿一致；
也就是说，此种情况下，该第一处理的资源选择窗口的长度不变，将第一处理的资源选择窗口后沿直接往后移。
进一步需要说明的是，在引入第一处理的情况下，所述持续感知的结束时刻为：
所述第一处理的结束时刻。
综上可知，本公开能够达到如下有益效果：
1、工作在节电机制下的V2X终端，当业务包到达时，能够确定资源选择前的必要感知时长，降低与其他终端业务传输的碰撞概率、避免可靠性显著降低；
2、工作在节电机制下的V2X终端，能够基于本终端其他的发送/接收触发的感知(包括周期性业务触发的部分感知、非连续接收的触发的感知、其他业务包触发的感知等)以及确定的资源选择前必要感知时长，确定资源选择时机，一方面，解决现有机制无法适用的问题；另一方面，能够尽可能利用业务包到达时正在进行的感知结果或者业务包到达前临近的感知结果，实现保证可靠性的情况下最大限度的节电；
3、工作在节电机制下的V2X设备，能够确定业务包到达所对应的资源选择窗口，以及Re-evaluation/Pre-emption的资源选择窗口，能够同时确保节电性能以及碰撞避免性能。
需要说明的是，本公开所说的直通链路的资源选择方法主要应用于车联网中的资源选择，但是并不限于车联网，例如，蜂窝网下的资源选择也属于本公开的保护范围。
如图10所示，本公开实施例还提供一种终端100，包括：
确定模块101，用于当业务包到达时，确定资源选择时刻；
选择模块102，用于在所述资源选择时刻选择进行业务包发送的发送资源。
可选地，所述确定模块101，包括：
第一获取单元，用于获取所述业务包对应的第一目标参数；
第一确定单元，用于若所述第一目标参数的取值为零，则确定资源选择时刻为所述业务包到达时刻；
其中，所述第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数。
可选地，所述确定模块101，包括：
第二获取单元，用于获取所述业务包对应的第一目标参数；
第二确定单元，用于若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知的时长大于或等于所述第一目标参数，则资源选择时刻等于业务包到达时刻；
其中，所述第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数。
可选地，所述确定模块101，包括：
第三确定单元，用于确定资源选择前需要执行的短时持续感知的时长；
第四确定单元，用于根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻。
进一步地，所述第三确定单元，用于：
根据第二目标参数，确定资源选择前需要执行的短时持续感知的时长；
其中，所述第二目标参数包括以下至少一项：
业务包的优先级；
业务包的时延；
业务包的可靠性；
业务包的服务质量；
最小短时持续感知时长参数；
短时持续感知时长参数。
进一步地，所述第四确定单元，用于：
若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知的时长大于或等于所述资源选择前需要执行的短时持续感知的时长，则资源选择时刻等于业务包到达时刻。
进一步地，所述连续感知在所述业务包到达时刻已经结束，且在所述业务包到达时刻停止感知的时长小于或等于K；
其中，K为大于或等于0的整数。
进一步地，所述第四确定单元，用于：
确定业务包到达时刻终端正在执行的连续感知的第一时长；
根据所述第一时长以及所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻。
具体地，所述根据所述第一时长以及所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻的方式，具体为：
根据以下公式中的一项确定资源选择时刻；
Figure PCTCN2022076647-appb-000015
Figure PCTCN2022076647-appb-000016
Figure PCTCN2022076647-appb-000017
其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前需要执行的短时持续感知的时长；M为第一时长，且M≥0；T proc,0为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
进一步地，所述第四确定单元，用于：
根据以下公式中的一项确定资源选择时刻；
n selection＝n+L；
n selection＝n+L+T proc,0；
n selection＝n+L-T proc,0；
其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前需要执行的短时持续感知的时长；T proc为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
可选地，所述短时持续感知的结束时刻为：资源选择时刻。
具体地，所述连续感知包括以下至少一项：
非连续接收开启执行的感知；
周期性的部分感知；
其他业务包发送触发的短时持续感知。
可选地，在所述确定模块确定资源选择时刻之后，还包括：
窗口确定模块，用于根据所述资源选择时刻，确定资源选择窗口。
进一步地，所述资源选择窗口为：[n selection+T 1，n selection+T 2]；
其中，T 1为资源选择窗口前沿确定参数；T 2为资源选择窗口后沿确定参数；且满足以下至少一项：
T 2-T 1大于或等于资源选择窗最小候选时域资源数量；
T 2小于或等于直通链路控制信息时域资源分配域中可指示的两次发送之 间间隔的最大时域资源数量；
T 2小于或等于预设值。
具体地，所述资源选择窗最小候选时域资源数量根据以下方式中的至少一项确定：
根据资源选择窗最小候选时域资源数量参数确定；
根据每次发送对应的最小候选时域资源数量参数确定；
根据业务包的优先级确定；
根据业务包的时延确定；
根据业务包的可靠性确定；
根据业务包的服务质量确定。
可选地，在所述选择模块在所述资源选择时刻选择进行业务包发送的发送资源之后，还包括：
处理模块，用于继续执行持续感知，对所述发送资源执行第一处理之后，执行业务包的发送；
其中，所述第一处理包括：重评估机制和/或抢占机制。
进一步地，所述第一处理的资源选择窗口后沿的确定方式包括以下一项：
所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时的资源选择窗口的后沿绝对时刻；
所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时刻后的第一预设时长对应的时刻；
所述第一处理的资源选择窗口后沿所对应的时刻小于或等于持续感知开始时刻与短时持续感知最大预设时长之和。
具体地，所述持续感知的结束时刻为：
所述第一处理的结束时刻。
需要说明的是，该终端实施例是与上述方法实施例一一对应的终端，上述方法实施例中所有实现方式均适用于该终端的实施例中，也能达到相同的技术效果。
如图11所示，本公开实施例还提供一种终端110，包括处理器111、收发机112、存储器113及存储在所述存储器113上并可在所述处理器111上运 行的程序；其中，收发机112通过总线接口与处理器111和存储器113连接，其中，所述处理器111用于读取存储器中的程序，执行下列过程：
当业务包到达时，确定资源选择时刻；
在所述资源选择时刻选择进行业务包发送的发送资源。
需要说明的是，在图11中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器111代表的一个或多个处理器和存储器113代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机112可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的终端，用户接口114还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。处理器111负责管理总线架构和通常的处理，存储器113可以存储处理器111在执行操作时所使用的数据。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
获取所述业务包对应的第一目标参数；
若所述第一目标参数的取值为零，则确定资源选择时刻为所述业务包到达时刻；
其中，所述第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
获取所述业务包对应的第一目标参数；
若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知的时长大于或等于所述第一目标参数，则资源选择时刻等于业务包到达时刻；
其中，所述第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
确定资源选择前需要执行的短时持续感知的时长；
根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时 刻。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
根据第二目标参数，确定资源选择前需要执行的短时持续感知的时长；
其中，所述第二目标参数包括以下至少一项：
业务包的优先级；
业务包的时延；
业务包的可靠性；
业务包的服务质量；
最小短时持续感知时长参数；
短时持续感知时长参数。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知的时长大于或等于所述资源选择前需要执行的短时持续感知的时长，则资源选择时刻等于业务包到达时刻。
具体地，所述连续感知在所述业务包到达时刻已经结束，且在所述业务包到达时刻停止感知的时长小于或等于K；
其中，K为大于或等于0的整数。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
确定业务包到达时刻终端正在执行的连续感知的第一时长；
根据所述第一时长以及所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
根据以下公式中的一项确定资源选择时刻；
Figure PCTCN2022076647-appb-000018
Figure PCTCN2022076647-appb-000019
Figure PCTCN2022076647-appb-000020
其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前 需要执行的短时持续感知的时长；M为第一时长，且M≥0；T proc,0为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
根据以下公式中的一项确定资源选择时刻；
n selection＝n+L；
n selection＝n+L+T proc,0；
n selection＝n+L-T proc,0；
其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前需要执行的短时持续感知的时长；T proc为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
具体地，所述短时持续感知的结束时刻为：资源选择时刻。
具体地，所述连续感知包括以下至少一项：
非连续接收开启执行的感知；
周期性的部分感知；
其他业务包发送触发的短时持续感知。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
根据所述资源选择时刻，确定资源选择窗口。
具体地，所述资源选择窗口为：[n selection+T 1，n selection+T 2]；
其中，T 1为资源选择窗口前沿确定参数；T 2为资源选择窗口后沿确定参数；且满足以下至少一项：
T 2-T 1大于或等于资源选择窗最小候选时域资源数量；
T 2小于或等于直通链路控制信息时域资源分配域中可指示的两次发送之间间隔的最大时域资源数量；
T 2小于或等于预设值。
具体地，所述资源选择窗最小候选时域资源数量根据以下方式中的至少一项确定：
根据资源选择窗最小候选时域资源数量参数确定；
根据每次发送对应的最小候选时域资源数量参数确定；
根据业务包的优先级确定；
根据业务包的时延确定；
根据业务包的可靠性确定；
根据业务包的服务质量确定。
可选地，所述处理器111用于读取存储器中的程序，还执行下列过程：
继续执行持续感知，对所述发送资源执行第一处理之后，执行业务包的发送；
其中，所述第一处理包括：重评估机制和/或抢占机制。
具体地，所述第一处理的资源选择窗口后沿的确定方式包括以下一项：
所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时的资源选择窗口的后沿绝对时刻；
所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时刻后的第一预设时长对应的时刻；
所述第一处理的资源选择窗口后沿所对应的时刻小于或等于持续感知开始时刻与短时持续感知最大预设时长之和。
具体地，所述持续感知的结束时刻为：
所述第一处理的结束时刻。
本公开实施例还提供一种可读存储介质，所述可读存储介质上存储有计算机程序，其中，所述程序被处理器执行时实现应用于终端的直通链路的资源选择方法的步骤。
本公开实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述直通链路的资源选择方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片、系统芯片、芯片系统或片上系统芯片等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申 请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
需要说明的是，应理解以上各个模块的划分仅仅是一种逻辑功能的划分，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。且这些模块可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分模块通过处理元件调用软件的形式实现，部分模块通过硬件的形式实现。例如，确定模块可以为单独设立的处理元件，也可以集成在上述装置的某一个芯片中实现，此外，也可以以程序代码的形式存储于上述装置的存储器中，由上述装置的某一个处理元件调用并执行以上确定模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，各个模块、单元、子单元或子模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。再如，当以上某个模块通过处理元件调度程序代码的形式实现时，该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit， CPU)或其它可以调用程序代码的处理器。再如，这些模块可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
本公开的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本公开的实施例，例如除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，说明书以及权利要求中使用“和/或”表示所连接对象的至少其中之一，例如A和/或B和/或C，表示包含单独A，单独B，单独C，以及A和B都存在，B和C都存在，A和C都存在，以及A、B和C都存在的7种情况。类似地，本说明书以及权利要求中使用“A和B中的至少一个”应理解为“单独A，单独B，或A和B都存在”。
以上所述的是本公开的优选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (21)

  1. 一种直通链路的资源选择方法，应用于终端，包括：
    当业务包到达时，确定资源选择时刻；
    在所述资源选择时刻选择进行业务包发送的发送资源。
  2. 根据权利要求1所述的方法，其中，所述确定资源选择时刻，包括：
    获取所述业务包对应的第一目标参数；
    若所述第一目标参数的取值为零，则确定资源选择时刻为所述业务包到达时刻；
    其中，所述第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数。
  3. 根据权利要求1所述的方法，其中，所述确定资源选择时刻，包括：
    获取所述业务包对应的第一目标参数；
    若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知的时长大于或等于所述第一目标参数，则资源选择时刻等于业务包到达时刻；
    其中，所述第一目标参数包括：最小短时持续感知时长参数或短时持续感知时长参数。
  4. 根据权利要求1所述的方法，其中，所述确定资源选择时刻，包括：
    确定资源选择前需要执行的短时持续感知的时长；
    根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻。
  5. 根据权利要求4所述的方法，其中，所述确定资源选择前需要执行的短时持续感知的时长，包括：
    根据第二目标参数，确定资源选择前需要执行的短时持续感知的时长；
    其中，所述第二目标参数包括以下至少一项：
    业务包的优先级；
    业务包的时延；
    业务包的可靠性；
    业务包的服务质量；
    最小短时持续感知时长参数；
    短时持续感知时长参数。
  6. 根据权利要求4所述的方法，其中，所述根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻，包括：
    若在所述业务包到达时刻之前，终端执行了连续感知、且所述连续感知的时长大于或等于所述资源选择前需要执行的短时持续感知的时长，则资源选择时刻等于业务包到达时刻。
  7. 根据权利要求3或6所述的方法，其中，所述连续感知在所述业务包到达时刻已经结束，且在所述业务包到达时刻停止感知的时长小于或等于K；
    其中，K为大于或等于0的整数。
  8. 根据权利要求4所述的方法，其中，所述根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻，包括：
    确定业务包到达时刻终端正在执行的连续感知的第一时长；
    根据所述第一时长以及所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻。
  9. 根据权利要求8所述的方法，其中，所述根据所述第一时长以及所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻，包括：
    根据以下公式中的一项确定资源选择时刻；
    Figure PCTCN2022076647-appb-100001
    Figure PCTCN2022076647-appb-100002
    Figure PCTCN2022076647-appb-100003
    其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前需要执行的短时持续感知的时长；M为第一时长，且M≥0；T proc,0为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
  10. 根据权利要求4所述的方法，其中，所述根据所述资源选择前需要执行的短时持续感知的时长，确定资源选择时刻，包括：
    根据以下公式中的一项确定资源选择时刻；
    n selection＝n+L；
    n selection＝n+L+T proc,0；
    n selection＝n+L-T proc,0；
    其中，n selection为资源选择时刻；n为业务包到达时刻；L为资源选择前需要执行的短时持续感知的时长；T proc,0为所述资源选择前需要执行的短时持续感知的时长内得到的感知结果处理时间。
  11. 根据权利要求4所述的方法，其中，所述短时持续感知的结束时刻为：资源选择时刻。
  12. 根据权利要求3、6或8所述的方法，其中，所述连续感知包括以下至少一项：
    非连续接收开启执行的感知；
    周期性的部分感知；
    其他业务包发送触发的短时持续感知。
  13. 根据权利要求1所述的方法，其中，在所述确定资源选择时刻之后，还包括：
    根据所述资源选择时刻，确定资源选择窗口。
  14. 根据权利要求13所述的方法，其中，所述资源选择窗口为：[n selection+T 1，n selection+T 2]；
    其中，T 1为资源选择窗口前沿确定参数；T 2为资源选择窗口后沿确定参数；且满足以下至少一项：
    T 2-T 1大于或等于资源选择窗最小候选时域资源数量；
    T 2小于或等于直通链路控制信息时域资源分配域中可指示的两次发送之间间隔的最大时域资源数量；
    T 2小于或等于预设值。
  15. 根据权利要求14所述的方法，其中，所述资源选择窗最小候选时域资源数量根据以下方式中的至少一项确定：
    根据资源选择窗最小候选时域资源数量参数确定；
    根据每次发送对应的最小候选时域资源数量参数确定；
    根据业务包的优先级确定；
    根据业务包的时延确定；
    根据业务包的可靠性确定；
    根据业务包的服务质量确定。
  16. 根据权利要求1所述的方法，其中，在所述资源选择时刻选择进行业务包发送的发送资源之后，还包括：
    继续执行持续感知，对所述发送资源执行第一处理之后，执行业务包的发送；
    其中，所述第一处理包括：重评估机制和/或抢占机制。
  17. 根据权利要求16所述的方法，其中，所述第一处理的资源选择窗口后沿的确定方式包括以下一项：
    所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时的资源选择窗口的后沿绝对时刻；
    所述第一处理的资源选择窗口后沿确定为对业务包进行初始资源选择时刻后的第一预设时长对应的时刻；
    所述第一处理的资源选择窗口后沿所对应的时刻小于或等于持续感知开始时刻与短时持续感知最大预设时长之和。
  18. 根据权利要求16所述的方法，其中，所述持续感知的结束时刻为：
    所述第一处理的结束时刻。
  19. 一种终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至18中任一项所述的直通链路的资源选择方法的步骤。
  20. 一种终端，包括：
    确定模块，用于当业务包到达时，确定资源选择时刻；
    选择模块，用于在所述资源选择时刻选择进行业务包发送的发送资源。
  21. 一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行权利要求1至18任一项所述的直通链路的资源选择方法的步骤。
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