WO2022027652A1 - 确定资源的方法和装置 - Google Patents

确定资源的方法和装置 Download PDF

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Publication number
WO2022027652A1
WO2022027652A1 PCT/CN2020/107962 CN2020107962W WO2022027652A1 WO 2022027652 A1 WO2022027652 A1 WO 2022027652A1 CN 2020107962 W CN2020107962 W CN 2020107962W WO 2022027652 A1 WO2022027652 A1 WO 2022027652A1
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Prior art keywords
terminal device
time
information
frequency resource
resource information
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PCT/CN2020/107962
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English (en)
French (fr)
Inventor
黄海宁
黎超
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2020/107962 priority Critical patent/WO2022027652A1/zh
Priority to CN202080104730.XA priority patent/CN116210267A/zh
Publication of WO2022027652A1 publication Critical patent/WO2022027652A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]

Definitions

  • the present application relates to the field of communications, and more particularly, to a method and apparatus for determining resources.
  • the connection between the vehicle-mounted terminal devices is a sidelink (SL).
  • the first terminal device sends data to the third terminal device through the sidelink, it needs to confirm the availability
  • the first terminal device may request the base station to obtain time-frequency resources, and in another implementation manner, the first terminal device may select time-frequency resources from the resource pool to the third terminal The device sends data. Before the first terminal device selects time-frequency resources from the resource pool to send data to the third terminal device, it needs to determine which time-frequency resources are available in the resource pool, or need to determine which time-frequency resources are unavailable.
  • the first terminal device can request to obtain the information of the time-frequency resources that can be used or the information of the time-frequency resources that cannot be used by sending a resource request message to other terminal devices, and then send a request to the third terminal device according to the obtained time-frequency resource information.
  • the terminal device sends data.
  • the time-frequency resource information provided by other terminal equipment is not necessarily useful.
  • the present application provides a method and apparatus for determining resources, which can improve the reliability of data transmission.
  • a method for determining resources comprising: a second terminal device receiving a first message sent by a first terminal device, where the first message is used to acquire time-frequency resource information, and the first message includes all the location information of the first terminal device and/or the location information of the third terminal device, wherein the third terminal device is the target terminal device to which the first terminal device needs to transmit data; the second terminal device determines to The first terminal device sends the time-frequency resource information, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the second terminal device can determine whether to provide time-frequency resource information to the first terminal device according to the distance between the second terminal device and the first terminal device and/or the distance between the second terminal device and the third terminal device.
  • the time-frequency resource information has reference value for the first terminal device, so that the first terminal device selects available time-frequency resources to send data to the third terminal device, thereby improving the reliability of data transmission.
  • determining, by the second terminal device to send the time-frequency resource information to the first terminal device includes: determining, by the second terminal device, to send the first terminal device to the first terminal device according to the location information The terminal device sends the time-frequency resource information.
  • determining by the second terminal device to send the time-frequency resource information to the first terminal device according to the location information includes: the second terminal device according to the first terminal device location information of the device, and determine the first distance between the second terminal device and the first terminal device; if the first distance is greater than the first threshold, the second terminal device determines The terminal device sends the time-frequency resource information.
  • determining, by the second terminal device to send the time-frequency resource information to the first terminal device according to the location information includes: the second terminal device according to the third terminal device location information, and determine a second distance between the second terminal device and the third terminal device; if the second distance is less than a second threshold, the second terminal device determines The terminal device sends the time-frequency resource information.
  • determining by the second terminal device to send the time-frequency resource information to the first terminal device according to the location information includes: the second terminal device according to the first terminal device The location information of the device and the location information of the third terminal device, determine the first distance between the second terminal device and the first terminal device, the distance between the second terminal device and the third terminal device The second distance between them; if the first distance is greater than the first threshold and the second distance is less than the second threshold, the second terminal device determines to send the time-frequency resource information to the first terminal device.
  • the location information of the first terminal device and/or the location information of the third terminal device is carried in one of the following pieces of information: first-level sidelink control information SCI, Secondary sidelink control information SCI or medium access control layer control element MAC CE.
  • the location information includes a zone identifier.
  • a method for determining resources including: a first terminal device acquiring location information of a second terminal device and/or location information of a third terminal device, wherein the third terminal device is the first terminal device The terminal device needs to transmit data to the target terminal device; the first terminal device determines to send a first message to the second terminal device, where the first message is used to acquire time-frequency resource information, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the first terminal device determines whether to request the second terminal device to obtain the time-frequency resource information according to the distance between it and the second terminal device and/or the distance between the first terminal device and the third terminal device, which can ensure the acquisition of time-frequency resource information.
  • the obtained time-frequency resource information has reference value for the first terminal device, so that the first terminal device selects available time-frequency resources to send data to the third terminal device, thereby improving the reliability of data transmission.
  • the determining by the first terminal device to send the first message to the second terminal device includes: determining, by the first terminal device, to send the first message to the second terminal device according to the location information the first message.
  • determining, by the first terminal device to send the first message to the second terminal device according to the location information includes: the first terminal device according to the second terminal device location information, and determine the first distance between the first terminal device and the second terminal device; if the first distance is greater than a third threshold, the first terminal device determines The device sends the first message.
  • determining, by the first terminal device to send the first message to the second terminal device according to the location information includes: the first terminal device according to the second terminal device and the location information of the third terminal device, determine the second distance between the second terminal device and the third terminal device; if the second distance is less than the fourth threshold, the first A terminal device determines to send the first message to the second terminal device.
  • the second terminal device is the closest terminal device to the third terminal device among at least one fourth terminal device.
  • determining, by the first terminal device to send the first message to the second terminal device according to the location information includes: the first terminal device according to the second terminal device location information and the location information of the third terminal device, determine the first distance between the first terminal device and the second terminal device, determine the distance between the second terminal device and the third terminal device If the first distance is greater than the third threshold and the second distance is less than the fourth threshold, the first terminal device determines to send the first message to the second terminal device.
  • acquiring, by the first terminal device, the location information of the second terminal device and/or the location information of the third terminal device includes: the first terminal device asking the second terminal device and The third terminal device sends a location information request message; the first terminal device receives the location information of the second terminal device sent by the second terminal device, and/or the first terminal device receives The location information of the third terminal device sent by the third terminal device.
  • the location information of the second terminal device and/or the location information of the third terminal device is carried in one of the following pieces of information: first-level sidelink control information SCI, Secondary sidelink control information SCI or medium access control layer control element MAC CE.
  • the location information includes a zone identifier.
  • a method for determining resources comprising: a second terminal device receiving at least one second message from at least one first terminal device, where the second message is used to acquire time-frequency resource information, the second The message includes at least one of priority information, delay information, broadcast type information, channel quality information, and energy saving information of data to be sent by the first terminal device; the second terminal device determines The device sends the time-frequency resource information, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the second terminal device may determine to send data to the first terminal device according to at least one of priority information, delay information, broadcast type information, channel quality information, and energy saving information of the data to be sent by the first terminal device.
  • the time-frequency resource information, or determining the sequence of sending the time-frequency resource information to the first terminal device can ensure that the first terminal device uses the available time-frequency resources to send data to the third terminal device, thereby improving the reliability of data transmission.
  • the behavior of the second terminal device when receiving multiple second messages is defined, and the communication efficiency is improved.
  • the second terminal device determining to send the time-frequency resource information to the first terminal device includes: the second terminal device determining to send the time-frequency resource information to the first terminal device according to the second message.
  • a terminal device sends the time-frequency resource information.
  • determining, by the second terminal device to send the time-frequency resource information to the first terminal device according to the second message includes: the second terminal device according to the first The priority information of the data to be sent by the terminal device determines to send the time-frequency resource information to the first terminal device, wherein the priority value of the data to be sent by the first terminal device is lower than the fifth threshold.
  • determining, by the second terminal device to send the time-frequency resource information to the first terminal device according to the second message includes: the second terminal device according to the delay information, and determine to send the time-frequency resource information to the first terminal device, where the first terminal device has the shortest time delay.
  • determining, by the second terminal device to send the time-frequency resource information to the first terminal device according to the second message includes: the second terminal device according to the broadcast type information, and it is determined to send the time-frequency resource information to the first terminal device, wherein the second message sent by the first terminal device is sent in a unicast manner.
  • the second terminal device determining to send the time-frequency resource information to the first terminal device according to the second message includes: the second terminal device determining according to the channel quality information, and it is determined to send the time-frequency resource information to the first terminal device, wherein the channel quality information of the first terminal device satisfies a preset condition.
  • the delay information includes remaining packet delay budget PDB information.
  • the channel quality information includes at least one of: reference signal received power RSRP information, received signal strength indicator RSSI information, signal-to-noise ratio and interference ratio SINR information, or channel state information CSI.
  • the second terminal device determines to send the time-frequency resource information to the first terminal device according to the remaining packet delay budget PDB information and the priority information of the data to be sent.
  • the second terminal device determines an order of providing time-frequency resource information to different first terminal devices according to different weights of the remaining packet delay budget PDB information and the priority information of the data to be sent.
  • the energy saving information includes one or more of information such as whether the first terminal device is in the energy saving mode, the energy saving period, the active period and the dormant period in the energy saving period, and the like.
  • the second terminal device determines to provide time-frequency resource information to the first terminal device according to the energy saving information.
  • the second terminal device preferentially provides time-frequency resource information for the terminal device in the energy saving mode. If the second terminal device receives multiple energy-saving information from multiple first terminal devices, the second terminal device determines, according to the length of the energy-saving period of the multiple first terminal devices or the ratio of the activation period in the energy-saving period, to different The sequence in which a terminal device provides time-frequency resource information.
  • the second terminal device determines to send the time-frequency resource information to the first terminal device, wherein the length of the energy saving period of the first terminal device is the shortest, or the proportion of the activation period in the energy saving period is the smallest.
  • the terminal device in the energy saving mode has limited reception time, and determining resources by means of perception or partial perception will increase the probability of resource conflict or increase system interference. Therefore, for the terminal device in the energy-saving mode, the acquired time-frequency resources are more valuable, because not only the reliability of data transmission is improved, but also the probability of system interference and resource conflict is reduced.
  • a method for determining resources comprising: a first terminal device sending a second message to a second terminal device, where the second message is used to acquire time-frequency resource information, and the second message includes the at least one of priority information, delay information, broadcast type information, channel quality information, and energy saving information of the data to be sent by the first terminal device.
  • a method for determining resources including: a first terminal device receives time-frequency resource information from a second terminal device; the first terminal device determines to use the time-frequency resource information, the time-frequency resource The information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the first terminal device determines to use the time-frequency resource information according to the location information of the second terminal device and/or the location information of the third terminal device, wherein the The third terminal device is the target terminal device to which the first terminal device needs to transmit data.
  • the first terminal device determines to use the time-frequency resource information according to the location information of the second terminal device and/or the location information of the third terminal device.
  • the reliability of data transmission of the first terminal device can be improved.
  • the time-frequency resource information includes location information of the second terminal device.
  • the first terminal device may acquire the location information of the second terminal device, and use it to determine whether the time-frequency resource information is available time-frequency resource information, thereby ensuring the reliability of data transmission.
  • the first terminal device determines the first distance between the first terminal device and the second terminal device according to the location information of the second terminal device; if the If the first distance is greater than the eighth threshold, the first terminal device determines to use the time-frequency resource information.
  • the distance between the first terminal device and the second terminal device is very close, the similarity of their channel environments is also high, and the reliability and interference degree of the time-frequency resources determined by perception or partial perception are similar.
  • the The above-mentioned time-frequency resource information is of little value to the first terminal device. Then the first terminal device will not be used.
  • the first terminal device receives multiple pieces of time-frequency resource information from multiple second terminal devices; the time-frequency resource information includes location information of the second terminal devices.
  • the first terminal device determines, according to the location information of the plurality of second terminal devices, a plurality of first distances between the first terminal device and the plurality of second terminal devices, where the plurality of first distances If the first distance is greater than the eighth threshold, the first terminal device determines to use the time-frequency resource information sent by the second terminal device corresponding to which the first distance is greater than the eighth threshold.
  • the first terminal device determines the second terminal device and the third terminal device according to the location information of the second terminal device and the location information of the third terminal device The second distance between them; if the second distance is less than the ninth threshold, the first terminal device determines to use the time-frequency resource information.
  • the distance between the third terminal device and the second terminal device is very close, the similarity of their channel environments is also high, and the reliability and interference degree of the time-frequency resources determined by perception or partial perception are similar.
  • the The time-frequency resource information is of high value to the first terminal device. The reliability of data transmission of the first terminal device can be improved.
  • the first terminal device receives multiple pieces of time-frequency resource information from multiple second terminal devices; the time-frequency resource information includes location information of the second terminal devices.
  • the first terminal device determines, according to the location information of the plurality of second terminal devices and the location information of the third terminal device, a plurality of distances between the plurality of second terminal devices and the third terminal device. second distance; if a minimum value is determined among the plurality of second distances, the first terminal device determines to use the time-frequency resource information sent by the second terminal device corresponding to the minimum value.
  • the first terminal device determines the first terminal device and the second terminal device according to the location information of the second terminal device and the location information of the third terminal device determine the first distance between the second terminal device and the third terminal device; if the first distance is greater than the eighth threshold and the second distance is less than the ninth threshold, then The first terminal device determines to use the time-frequency resource information.
  • the method before the first terminal device determines to use the time-frequency resource information, the method further includes: the first terminal device sends a location information request message to the third terminal device ; the first terminal device receives the location information of the third terminal device sent by the third terminal device.
  • the location information of the third terminal device is carried in one of the following pieces of information: first-level sidelink control information SCI, second-level sidelink control information SCI or media interface Incoming control layer control element MAC CE.
  • the location information includes a zone identifier.
  • a communication apparatus comprising a unit for implementing the functions of the method in the first aspect or any possible implementation manner of the first aspect.
  • a communication apparatus comprising a unit for implementing the functions of the method in the second aspect or any possible implementation manner of the second aspect.
  • a communication apparatus comprising a unit for implementing the functions of the method in the third aspect or any possible implementation manner of the third aspect.
  • a communication device comprising: a processor and a transceiver, the transceiver is configured to receive computer code or instructions and transmit them to the processor, and the processor executes the computer code or instructions, A method as in the first aspect or any possible implementation manner of the first aspect.
  • a communication device comprising: a processor and a transceiver, wherein the transceiver is configured to receive computer code or instructions and transmit them to the processor, and the processor executes the computer code or instructions, A method as in the second aspect or any possible implementation of the second aspect.
  • a communication device comprising: a processor and a transceiver, the transceiver is configured to receive computer code or instructions and transmit them to the processor, and the processor executes the computer code or instructions , as the method in the third aspect or any possible implementation manner of the third aspect.
  • a twelfth aspect provides a communication system, including the first terminal device, the second terminal device, and the third terminal device in the method of the first aspect, the second aspect, or the third aspect.
  • a thirteenth aspect provides a computer-readable storage medium, where a computer program is stored in the computer-readable medium; when the computer program runs on a computer, the computer causes the computer to execute the first aspect to the third aspect or the first aspect to the method in any possible implementation manner of the third aspect.
  • FIG. 1 is a schematic interactive flowchart of a method for determining resources.
  • FIG. 2 is a schematic diagram of a timing sequence for a UE to detect time-frequency resources.
  • FIG. 3 is a schematic flowchart of a method for determining time-frequency resources according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a positional relationship of different terminal devices according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another method for determining time-frequency resources according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another method for determining time-frequency resources according to an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of another method for determining time-frequency resources according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a communication apparatus according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of another communication apparatus according to an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of another communication apparatus according to an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a communication device according to an embodiment of the application.
  • FIG. 12 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • the embodiments of the present application can be applied to various communication systems, such as a sidelink communication system (sidelink communication), a vehicle to everything (V2X) system, a wireless local area network (WLAN), and a narrowband Internet of Things system (narrow band-internet of things, NB-IoT), global system for mobile communications (GSM), enhanced data rate for GSM evolution (enhanced data rate for gsm evolution, EDGE), wideband code division multiple access system (wideband code division multiple access, WCDMA), code division multiple access 2000 system (code division multiple access, CDMA2000), time division synchronization code division multiple access system (time division-synchronization code division multiple access, TD-SCDMA), long term evolution system (long term evolution, LTE), satellite communication, fifth generation (5th generation, 5G) system or new communication systems that will appear in the future.
  • sidelink communication sidelink communication
  • V2X vehicle to everything
  • WLAN wireless local area network
  • NB-IoT narrowband Internet of Things system
  • GSM global system for mobile
  • the terminal device involved in the embodiments of the present application may be a device that includes a wireless transceiver function and can provide a communication service for a user.
  • the terminal device may be a device in a V2X system, a device in a device to device (device to device, D2D) system, a device in a machine type communication (machine type communication, MTC) system, and the like.
  • Various wireless communication capable handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem may be included.
  • the terminal can be a mobile station (mobile station, MS), a subscriber unit (subscriber unit), user equipment (user equipment, UE), a cellular phone (cellular phone), a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, Wireless local loop (WLL) station, smart phone (smart phone), wireless data card, personal digital assistant (personal digital assistant, PDA) computer, tablet computer, wireless modem (modem), handheld device (handset) ), laptop computer (laptop computer), machine type communication (machine type communication, MTC) terminal, etc.
  • MS mobile station
  • subscriber unit subscriber unit
  • user equipment user equipment
  • UE a cellular phone
  • cordless phone a session initiation protocol (session initiation protocol, SIP) phone
  • WLL Wireless local loop
  • smart phone smart phone
  • wireless data card personal digital assistant (personal digital assistant, PDA) computer, tablet computer, wireless modem (modem), handheld device (handset) ), laptop computer (laptop computer), machine type communication (machine type communication
  • the network devices involved in the embodiments of this application mainly refer to base stations, also referred to as wireless access points, transceiver stations, relay stations, cells, transceiver points, evolved base stations, new-generation base stations, and roadside site units (road site units, RSU), etc., which are not limited in the embodiments of the present application.
  • base stations also referred to as wireless access points, transceiver stations, relay stations, cells, transceiver points, evolved base stations, new-generation base stations, and roadside site units (road site units, RSU), etc.
  • the V2X communication system includes transmission between terminals, transmission between vehicles and terminals, and transmission between network devices/base stations and terminals/vehicles.
  • the in-vehicle terminal needs to keep connected with the network to obtain some configuration information, and also needs to maintain connection with other in-vehicle terminals to realize in-vehicle communication.
  • the connection between the in-vehicle terminal equipment and the base station is an uplink and a downlink
  • the connection between the in-vehicle terminal equipment is a sidelink (sidelink, SL).
  • HARQ hybrid automatic repeat request
  • V2X V2X
  • HARQ is a technology that combines forward error correction (forward error correction code) (forward error correction, FEC) and automatic repeat request (automatic repeat request, ARQ) methods.
  • FEC forward error correction code
  • ARQ automatic repeat request
  • both the sender and the receiver usually use the HARQ technology to ensure the correctness of data transmission.
  • the data block is encoded, that is, after the transport block (TB) is encoded
  • the information bits and a part of the redundant bits are sent during the first transmission.
  • Sending end the sending end confirms that the corresponding information bit has been successfully received, and considers that the TB has been successfully transmitted. If the receiver cannot decode correctly, a negative acknowledgement (NACK) is fed back to the sender.
  • NACK negative acknowledgement
  • the sender After the sender receives the NACK, it further transmits a part of the information bits and/or redundant bits to the receiver, which is called retransmitted data. After the receiver receives the retransmitted data, it is combined with the previously received data and decoded. , if the redundant bits added for retransmission still cannot be decoded normally, retransmission is performed again. With the increase of the number of retransmissions, the redundant bits are continuously accumulated, and the channel coding rate is continuously reduced, so that a better decoding effect can be obtained.
  • one time slot includes 14 symbols, and one time slot is used to carry the physical sidelink control channel (PSCCH) symbol number
  • the number is configured on each resource pool.
  • the number of candidate physical resource blocks (PRBs) of the PSCCH is configured for each resource pool, and the PSCCH is carried in the subchannel.
  • the first symbol of each time slot is used for automatic gain control (AGC), and the last symbol is the guard interval.
  • AGC automatic gain control
  • the PSCCH carries the first-level sidelink control information (sidelink control information, SCI), and the PSSCH carries the second-level SCI.
  • the first terminal device When the first terminal device sends data to the third terminal device through the sidelink, it needs to determine the available time-frequency resources. In one implementation manner, the first terminal device may request the base station to obtain time-frequency resources. In another implementation manner , the first terminal device can select time-frequency resources from the resource pool to send data to the third terminal device.
  • the first terminal device Before the first terminal device selects time-frequency resources from the resource pool to send data to the third terminal device, it needs to determine which time-frequency resources are available in the resource pool, or need to determine which time-frequency resources are unavailable.
  • the first terminal device sends a resource request message to other UEs to request to obtain information of time-frequency resources that can be used or information of time-frequency resources that cannot be used, and then according to the obtained time-frequency resources The information selects available time-frequency resources from the resource pool to send data to the third terminal device.
  • a method for determining resources is shown, which includes:
  • the first terminal device sends a time-frequency resource request message to the second terminal device to obtain time-frequency resource information, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the second terminal device may be any UE except the first terminal device and the third terminal device.
  • the second terminal device receives the time-frequency resource request message sent by the first terminal device, and determines a time-frequency resource set according to the time-frequency resource request message, where the time-frequency resource set may be an available time-frequency resource set, or is an unavailable time-frequency resource set, and the second terminal device sends the time-frequency resource set to the first terminal device.
  • the first terminal device After receiving the time-frequency resource set sent by the second terminal device, the first terminal device sends data to the third terminal device by using the available time-frequency resources.
  • the second terminal device may also actively determine the time-frequency resource set in the case of not receiving the time-frequency resource request message sent by the first terminal device, and after determining the time-frequency resource set, actively request the first terminal.
  • the device sends the time-frequency resource set.
  • the first terminal device sends a time-frequency resource request message to the second terminal device, and the time-frequency resource set determined by the second terminal device is not necessarily useful to the first terminal device. For example, if the distance between the second terminal device and the third terminal device is relatively far, the available time-frequency resources or unavailable time-frequency resources detected by the second terminal device are different from those detected by the third terminal device. , the time-frequency resource selected by the first terminal device according to the time-frequency resource information sent by the second terminal device may be unavailable or occupied by other UEs.
  • the second terminal device After the second terminal device receives the time-frequency resource request message sent by the first terminal device, if the time-frequency resource set determined by the second terminal device is useless to the first terminal device, it also sends a message to the first terminal device. This time-frequency resource set will waste resources and increase system interference.
  • the embodiment of the present application proposes a method for determining resources, which can improve the reliability of data transmission.
  • FIG. 2 a schematic diagram of the timing sequence of UE detecting time-frequency resources is shown.
  • the UE is triggered by a resource selection or resource reselection, and the resource detection window (sensing window) is a time slot where T 0 is configured by the base station, Depends on the subcarrier spacing, under different subcarrier spacing The values are different, as shown in Table 1. [n+T 1 , n+T 2 ] is the resource selection window.
  • the UE determines available time-frequency resources or unavailable time-frequency resources according to the resource information, priority information and reference signal received power (reference signal received power, RSRP) indicated by the first-level SCI.
  • RSRP reference signal received power
  • the two resources indicated by the first-level SCI carried in PSCCH1 are in the resource selection window, and the RSRP measurement value is higher than a threshold, then the two resources in the resource selection window are excluded;
  • PSCCH2 carries The 2 resources indicated by the first-level SCI are in the resource selection window, and the RSRP measurement value is higher than a threshold, then the 2 resources in the resource selection window are excluded.
  • the excluded resource from all the resources in the resource selection window is determined as a candidate resource set and reported to the upper layer.
  • FIG. 3 a schematic flowchart of a method 300 for determining time-frequency resources according to an embodiment of the present application is shown, and the method 300 includes:
  • the second terminal device receives a first message sent by the first terminal device, where the first message is used to request the second terminal device to acquire time-frequency resource information, where the time-frequency resource information may be detected by the second terminal device.
  • the second terminal device receives the first message sent by the first terminal device, it may be understood that the second terminal device receives the first message from the first terminal device.
  • the time-frequency resource information may be understood as resource information, resource auxiliary information or auxiliary information.
  • the first message may include only the location information of the first terminal device, may only include the location information of the third terminal device, or may include both the location information of the first terminal device and the location information of the third terminal device.
  • the third terminal may be a group of terminal devices.
  • the third terminal device is the target terminal device that the first terminal device needs to transmit data.
  • the first terminal device, the second terminal device, and the third terminal device may be terminal devices in a V2X communication system, or may be terminal devices in a sideline communication system, and the present invention does not limit the types of terminal devices.
  • FIG. 4 a schematic diagram of the positional relationship of different terminal devices is shown.
  • the location information of the first terminal device may be the zone ID (zone Identity, zone ID) of the first terminal device
  • the location information of the second terminal device may be the zone ID of the second terminal device.
  • the zone ID in V2X is briefly introduced.
  • the UE can determine a zone identifier, such as zone ID, according to the following formula, and the UE is located in the zone.
  • zone_id y1*64+x1
  • L and W are the same value of sl-ZoneLength included in sl-ZoneConfig.
  • x is the geodesic distance in longitude between the current position of the UE and the geographic coordinates (0, 0), according to the WGS84 model; the unit is expressed in meters.
  • y is the geodesic distance in latitude between the current position of the UE and the geographic coordinates (0,0), according to the WGS84 model; the unit is expressed in meters.
  • the high-level parameter sl-ZoneConfig is used to configure the parameters related to the zone ID, which is configured by the base station to the UE.
  • Sl-ZoneLength indicates the length of each geographic zone. Zone-related information is configured on the resource pool.
  • the reliability of data transmission of the first terminal device is further improved.
  • the granularity of zone division can be reduced, that is, the formula is
  • zone_id y1*128+x1
  • the first terminal device Before the first terminal device transmits data to the third terminal device, it needs to select time-frequency resources from the resource pool. Therefore, the first terminal device needs to determine which time-frequency resources are unavailable and which are available. Optionally, corresponding to 310, the first terminal device may send a first message to the second terminal device for acquiring time-frequency resource information.
  • the location information of the first terminal device and/or the location information of the third terminal device included in the first message sent by the first terminal device to the second terminal device for requesting acquisition of time-frequency resource information may be carried in the In the first-level SCI, a field is used in the first-level SCI to indicate location information. This field includes 12 bits.
  • the first-level SCI may include one or more indication information among priority information, delay information, and reservation period of the data to be sent by the first terminal device.
  • the location information of the first terminal device and/or the location information of the third terminal device included in the first message sent by the first terminal device to the second terminal device for requesting acquisition of time-frequency resource information may be carried in the In the second-level SCI, a field is used in the second-level SCI to indicate the location information. This field includes 12 bits.
  • 1 bit may be used in the second-level SCI to indicate that the zone ID field in the second SCI is used to learn the zone IDs of other terminal devices.
  • the zone ID of the third terminal device rather than the zone ID of the first terminal device used for HARQ feedback.
  • the 1-bit indication is 1, it means that the zone ID is used for HARQ feedback; when the 1-bit indication is 0, it means that the location information is used to learn the zone IDs of other terminal devices.
  • the sender sends a multicast packet
  • the second-level SCI includes the zone ID.
  • the receiver After the receiver receives the packet, the receiver, based on its own location information and the zone ID included in the second-level SCI, indicates the closest distance.
  • the center point in the zone calculate the distance, and compare it with the communication range requirement; if it is within the communication range requirement and the data packet is not successfully received, NACK will be fed back; if it is not within the communication range requirement, NACK will not be fed back.
  • the first terminal device sends first information to the second terminal device, where the first information is used to request to acquire time-frequency resource information, and the first message includes the location information of the first terminal device and/or the third terminal device location information.
  • the location information of the first terminal device and/or the location information of the third terminal device may be carried in a medium access control (MAC) control element (control element, CE), and the MAC CE includes location information .
  • the MAC CE may include one or more of parameters such as priority information, delay information, and reservation period of the data to be sent by the first terminal device.
  • the location information of the first terminal device and/or the location information of the third terminal device may be carried in the first-level SCI, and the first-level SCI may include priority information of the data to be sent by the first terminal device. , delay information, reservation period and other parameters.
  • the first terminal device A location information request message may be sent to the third terminal device to acquire the location information of the third terminal device.
  • the location information request message may be indicated by a field in the SCI.
  • the first terminal device receives the location information of the third terminal device sent by the third terminal device.
  • the location information sent by the third terminal device to the first terminal device may be carried in any one of the above-mentioned first-level SCI, second-level SCI or MAC CE. It should be understood that the location information of the first terminal device is known to the first terminal device.
  • the acquisition of the location information of the third terminal device by the first terminal device may be triggered based on the location information request message, or may be acquired by the first terminal device and the third terminal device during the communication process.
  • the second terminal device determines to send the time-frequency resource information to the first terminal device, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the location information.
  • the second terminal device may determine the first distance between the second terminal device and the first terminal device according to the location information of the first terminal device, and determine and send the message to the first terminal device according to the first distance. Time-frequency resource information.
  • the second terminal device determines to send the time-frequency resource information to the first terminal device.
  • the second terminal device receives the first message. After a message is sent, the time-frequency resource information may not be provided to the first terminal device.
  • the second terminal device determines whether to send the time-frequency resource information to the first terminal device, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the available time-frequency resource information includes the time-frequency resources detected by the second terminal equipment in the resource pool that are not occupied by other UEs, or the time-frequency resources corresponding to the RSRP measurement value detected by the second terminal equipment are lower than a threshold. resource.
  • the unavailable time-frequency resources include time-frequency resources detected by the second terminal device that are occupied by other UEs and whose RSRP measurement value is higher than a threshold.
  • the RSRP measurement here may also be a signal strength measurement such as an RSSI measurement, an SINR measurement, or an energy strength measurement.
  • the present invention does not limit the method by which the terminal device determines available time-frequency resources or unavailable time-frequency resources.
  • the second terminal device may determine whether to send the time-frequency resource information to the first terminal device according to the location information. It can also be understood here that the second terminal device may determine to send time-frequency resource information to the first terminal device according to the location information. Alternatively, the second terminal device may determine not to send the time-frequency resource information to the first terminal device according to the location information.
  • the second terminal device may determine the first distance between the second terminal device and the first terminal device according to the location information of the first terminal device, and determine whether to send the first terminal device to the first terminal device according to the first distance.
  • Send time-frequency resource information Specifically, if the first distance is greater than the first threshold, the second terminal device determines to send the time-frequency resource information to the first terminal device; if the first distance is less than or equal to the first threshold, the second terminal device determines not to send time-frequency resource information to the first terminal device.
  • the location information of the first terminal device may be zone ID or zone information, and the first distance between the second terminal device and the first terminal device may be the position of the second terminal device itself and the nearest zone indicated by the zone ID field. the distance from the center.
  • the first terminal device may also use the time-frequency resource information determined by itself to send data to the target terminal device.
  • the first terminal device uses a time-frequency resource determined by a perceptual or partially perceptual resource selection manner, and the first terminal device uses the time-frequency resource to send data to the target terminal device.
  • the first terminal device and the second terminal device use the time-frequency resources determined in a perceptual or partially perceptual manner. The results are more similar.
  • the second terminal device provides time-frequency resource information to the first terminal device, the use value of the time-frequency resource information for the first terminal device is very low or meaningless, that is, for data transmission In terms of reliability, the time-frequency resource information provided by the second terminal device cannot improve the reliability of data transmission by the first terminal device.
  • the sending of the time-frequency resource information by the second terminal device to the first terminal device also introduces additional signaling interaction, which affects the operation efficiency of the communication system. Therefore, only when the distance between the first terminal device and the second terminal device is greater than the first threshold, it is necessary for the second terminal device to provide time-frequency resource information to the first terminal device. When the distance between the first terminal device and the second terminal device is equal to or less than the first threshold, the second terminal device does not provide time-frequency resource information to the first terminal device, which can not only avoid additional signaling interaction, but also Improve the operating efficiency of the communication system.
  • the second terminal device may not The distance of a terminal device determines whether to provide time-frequency resource information to the first terminal device, or not to provide time-frequency resource information to the first terminal device. Specifically, if the first message does not include the location information of the first terminal device, that is, the zone ID field is all set to 0, or indicated by 1 bit in the first-level SCI or the second-level SCI, or indicated by other means, For example, an RRC indication, a MAC indication, a system information block (SIB) indication or a master information block (MIB) indication.
  • SIB system information block
  • MIB master information block
  • the second terminal device may determine the second distance between the second terminal device and the third terminal device according to the location information of the third terminal device, and determine the direction to the first terminal device according to the second distance. Send time-frequency resource information.
  • the second terminal device determines to send the time-frequency resource information determined by the second terminal device to the first terminal device.
  • the second terminal device receives the first message. After a message is sent, the time-frequency resource information may not be provided to the first terminal device.
  • the second terminal device may determine the second distance between the second terminal device and the third terminal device according to the location information of the third terminal device, and determine whether to send the first terminal device according to the second distance.
  • the device sends time-frequency resource information.
  • determining whether to send the time-frequency resource information to the first terminal device according to the second distance can be understood as determining whether to send the time-frequency resource information to the first terminal device according to the second distance, or determining not to send the time-frequency resource information to the first terminal device according to the second distance.
  • Send time-frequency resource information can be understood as determining whether to send the time-frequency resource information to the first terminal device according to the second distance, or determining not to send the time-frequency resource information to the first terminal device according to the second distance.
  • the second terminal device determines to send the time-frequency resource information determined by the second terminal device to the first terminal device; if the second distance is greater than or equal to the second threshold, the second terminal device determines to send the time-frequency resource information determined by the second terminal device to the first terminal device; Then the second terminal device determines not to send the time-frequency resource information determined by the second terminal device to the first terminal device.
  • the location information of the third terminal device may be indicated by the zone ID field, and the second distance between the second terminal device and the third terminal device may be the position of the second terminal device itself and the closest zone indicated by the zone ID field the distance from the center.
  • the first terminal device needs to send data to the third terminal device according to the time-frequency resource information obtained from the second terminal device.
  • the time-frequency resource information determined by the second terminal device is relatively close to the resource situation of the third terminal device.
  • the second terminal device provides the first terminal device with The time-frequency resource information is valuable to the first terminal device. If the second terminal device is far away from the third terminal device, the time-frequency resource information provided by the second terminal device to the first terminal device is quite different from the resource situation of the third terminal device.
  • the time-frequency resource information provided by the second terminal device The frequency resource information is meaningless to the first terminal device, and additional signaling interaction is introduced, which affects the operation efficiency of the communication system. Therefore, when the distance between the second terminal device and the third terminal device is less than the second threshold, it is only necessary for the second terminal device to provide time-frequency resource information to the first terminal device, and the time-frequency resource information provided under this condition The resource information is useful to the first terminal device, which can bring great gains and improve the reliability of data transmission of the first terminal device.
  • the time-frequency resource information determined by the terminal device may be understood as the time-frequency resource information detected by the terminal device itself or the time-frequency resource information obtained by other means.
  • the second terminal device may not The distance between the three terminal devices determines whether to provide time-frequency resource information to the first terminal device, or not to provide time-frequency resource information to the first terminal device. Specifically, if the first message does not include the location information of the third terminal device, that is, the zone ID field is all set to 0, or indicated by 1 bit in the first-level SCI or the second-level SCI, or indicated by other means, For example, RRC indication, MAC indication, SIB indication or MIB indication.
  • the second terminal device may determine, according to the location information of the first terminal device and the location information of the third terminal device, the first distance between the second terminal device and the first terminal device, the second terminal device The second distance between the device and the third terminal device is determined, and the time-frequency resource information is sent to the first terminal device according to the first distance and the second distance.
  • the second terminal device determines to send the time-frequency resource information to the first terminal device
  • the second terminal device receives the first message. After a message is sent, the time-frequency resource information may not be provided to the first terminal device.
  • the second terminal device may determine, according to the location information of the first terminal device and the location information of the third terminal device, the first distance between the second terminal device and the first terminal device, the second terminal device The second distance between the device and the third terminal device, and whether to send time-frequency resource information to the first terminal device is determined according to the first distance and the second distance.
  • the second terminal device determines to send time-frequency resource information to the first terminal device; if the first distance is less than or equal to the first A threshold, or the second distance is greater than or equal to the second threshold, the second terminal device determines not to send the time-frequency resource information to the first terminal device.
  • the second terminal device receives the first message. After a message is sent, whether to provide time-frequency resource information to the first terminal device may not be determined according to the distance, or not to provide time-frequency resource information to the first terminal device.
  • the first threshold and the second threshold are configured in the resource pool by radio resource control (radio resource control, RRC) signaling of the base station. It can also be configured by the MAC layer, MAC CE, SIB or MIB message, it can also be configured by the first terminal device through PC5RRC, or it can be configured on the resource pool. It should be understood that the embodiments of the present application do not make any limitations on the sizes of the first threshold and the second threshold.
  • RRC radio resource control
  • the second terminal device may determine to provide time-frequency resources to the first terminal device according to the distance between it and the first terminal device and/or the distance from the third terminal device information, or, determining whether to provide time-frequency resource information to the first terminal device can ensure that the provided time-frequency resource information has reference value for the first terminal device, so that the first terminal device can select the available time-frequency resources to the third terminal device.
  • the terminal device sends data, thereby improving the reliability of data transmission.
  • the first terminal device may determine a target time-frequency resource according to the time-frequency resource information received from the second terminal device, where the target time-frequency resource is an available time-frequency resource in the resource pool , the first terminal device uses the target time-frequency resource to transmit data.
  • the first terminal device may determine the target time-frequency resource according to the time-frequency resource information detected by itself and the time-frequency resource information sent by the second terminal device.
  • the first terminal device may determine the target time-frequency resource only according to the time-frequency resource information sent by the second terminal device.
  • the self-detected time-frequency resource information may be understood as time-frequency resource information determined by the self-detected resource selection method through perception or partial perception or random selection.
  • the first terminal device may also request the third terminal device to obtain time-frequency resource information, and the embodiments of the present application are applicable to an application scenario where the third terminal device does not provide time-frequency resource information.
  • An embodiment of the present application proposes another method for determining resources. As shown in FIG. 5 , a schematic flowchart of another method 500 for determining time-frequency resources according to an embodiment of the present application is shown.
  • the method 500 includes:
  • the first terminal device acquires the location information of the second terminal device and/or the location information of the third terminal device, where the third terminal device is the target terminal device that the first terminal device needs to transmit data.
  • the first terminal device may send a location information request message to the second terminal device to obtain the location information of the second terminal device; the first terminal device may also send a location information request message to the third terminal device to obtain the location information of the third terminal device. location information.
  • the second terminal device After receiving the location information request message sent by the first terminal device, the second terminal device can send the location information of the second terminal device to the first terminal device, and the first terminal device receives the second terminal device sent by the second terminal device. Device location information.
  • the third terminal device may send the location information of the third terminal device to the first terminal device, and the first terminal device receives the third terminal device sent by the third terminal device. Device location information.
  • the first terminal device may also acquire the location information of the second terminal device and/or the location information of the third terminal device through multicast feedback.
  • the first terminal device may acquire the location information of the second terminal device and/or the location information of the third terminal device in the past communication process.
  • the first terminal device determines to send a first message to the second terminal device, where the first message is used to acquire time-frequency resource information, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information .
  • the first terminal device may determine to send the first message to the second terminal device according to the location information.
  • the first terminal device determines a first distance between the first terminal device and the second terminal device according to the location information of the second terminal device, and determines the direction to the second terminal device according to the first distance.
  • the terminal device sends the first message. Specifically, if the first distance is greater than the third threshold, the first terminal device determines to send the first message to the second terminal device.
  • the first terminal device may determine, according to the location information, whether to send a first message to the second terminal device, where the first message is used to acquire time-frequency resource information, where the time-frequency resource information includes available time-frequency resource information or Unavailable time-frequency resource information.
  • the first terminal device may determine whether to send the first message to the second terminal device according to the location information.
  • the first terminal device determines a first distance between the first terminal device and the second terminal device according to the location information of the second terminal device, and determines whether to go to the first terminal device according to the first distance.
  • the two terminal devices send the first message. Specifically, if the first distance is greater than the third threshold, the first terminal device determines to send the first message to the second terminal device; if the first distance is less than or equal to the third threshold, the first terminal device determines not to send the second message to the second terminal device.
  • the terminal device sends the first message.
  • the first terminal device may also determine the time-frequency resource information by itself.
  • the determined time-frequency resource information may be understood as the time-frequency resource information determined by itself through a resource selection manner of perception or partial perception or random selection.
  • the first terminal device sends a first message for acquiring the time-frequency resource information determined by the second terminal device to the second terminal device, the time-frequency resource information provided by the second terminal device to the first terminal device is for For the first terminal device, its use value is very low or meaningless.
  • the first terminal device sends the first message to the second terminal device, or the second terminal device sends the first terminal device to the first terminal device.
  • the time-frequency resource information also introduces additional signaling interaction, which affects the operation efficiency of the communication system. Therefore, it is only necessary to send the first message to the second terminal device when the distance between the first terminal device and the second terminal device is greater than the third threshold.
  • the first terminal device determines the second distance between the second terminal device and the third terminal device according to the location information of the second terminal device and the location information of the third terminal device, and determines the second distance between the second terminal device and the third terminal device according to the location information of the second terminal device and the third terminal device.
  • the distance determination sends the first message to the second terminal device. Specifically, if the second distance is smaller than the fourth threshold, the first terminal device determines to send the first message to the second terminal device.
  • the second terminal device may be any terminal device except the first terminal device and the third terminal device, or at least one fourth terminal device other than the first terminal device and the third terminal device.
  • the terminal device closest to the third terminal device may be any terminal device except the first terminal device and the third terminal device, or at least one fourth terminal device other than the first terminal device and the third terminal device. The terminal device closest to the third terminal device.
  • the first terminal device determines the second distance between the second terminal device and the third terminal device according to the location information of the second terminal device and the location information of the third terminal device, and determines the second distance between the second terminal device and the third terminal device according to the location information of the second terminal device and the third terminal device.
  • the distance determines whether to send the first message to the second terminal device. Specifically, if the second distance is less than the fourth threshold, the first terminal device determines to send the first message to the second terminal device; if the first distance is greater than or equal to the fourth threshold, the first terminal device determines not to send the second message to the second terminal device. The terminal device sends the first message.
  • the second terminal device may be any terminal device except the first terminal device and the third terminal device, or at least one fourth terminal device other than the first terminal device and the third terminal device.
  • the terminal device closest to the third terminal device may be any terminal device except the first terminal device and the third terminal device, or at least one fourth terminal device other than the first terminal device and the third terminal device. The terminal device closest to the third terminal device.
  • the first terminal device needs to send data to the third terminal device according to the time-frequency resource information obtained from the second terminal device.
  • the time-frequency resource information determined by the second terminal device is relatively close to the resource situation of the third terminal device.
  • the device sends the first message, and the acquired time-frequency resource information determined by the second terminal device is valuable to the first terminal device.
  • the second terminal device is far away from the third terminal device, if the first terminal device obtains time-frequency resource information from the second terminal device, the time-frequency resource information and the third terminal device are determined by sensing or partial sensing.
  • the resource situation of the device is quite different, and the time-frequency resource information obtained from the second terminal device is of very low value or meaningless to the first terminal device, and additional signaling interaction will be introduced, affecting the communication system. operating efficiency. Therefore, only when the distance between the second terminal device and the third terminal device is smaller than the fourth threshold, it is necessary for the first terminal device to send the first message for acquiring the time-frequency resource information to the second terminal device.
  • the first terminal device determines, according to the location information of the second terminal device and the location information of the third terminal device, the first distance between the first terminal device and the second terminal device, the second terminal device A second distance from the third terminal device, and the first message is sent to the second terminal device according to the first distance and the second distance. Specifically, if the first distance is greater than the third threshold and the second distance is less than the fourth threshold, the first terminal device determines to send the first message to the second terminal device;
  • the first terminal device may not send the first message for acquiring the time-frequency resource information to the first terminal device.
  • the first terminal device determines, according to the location information of the second terminal device and the location information of the third terminal device, the first distance between the first terminal device and the second terminal device, the second terminal device a second distance from the third terminal device, and whether to send the first message to the second terminal device is determined according to the first distance and the second distance. Specifically, if the first distance is greater than the third threshold and the second distance is less than the fourth threshold, the first terminal device determines to send the first message to the second terminal device; if the first distance is less than or equal to the third threshold and The second distance is greater than or equal to the fourth threshold, and the first terminal device determines not to send the first message to the second terminal device.
  • the first terminal device may not send the first message for acquiring the time-frequency resource information to the first terminal device.
  • the first terminal device determines to request the second terminal device to acquire time-frequency resources according to the distance between it and the second terminal device and/or the distance from the third terminal device information, or determine whether to request the second terminal device to obtain time-frequency resource information, which can ensure that the obtained time-frequency resource information has reference value for the first terminal device, so that the first terminal device can select the available time-frequency resource information to the first terminal device.
  • the third terminal device sends data, thereby improving the reliability of data transmission.
  • An embodiment of the present application proposes another method for determining resources.
  • FIG. 6 a schematic flowchart of another method 600 for determining time-frequency resources according to an embodiment of the present application is shown.
  • the method 600 includes:
  • the second terminal device receives at least one second message from at least one first terminal device, where the second message is used to acquire time-frequency resource information, where the second message includes the priority of the data to be sent by the first terminal device At least one of information, delay information, broadcast type information, channel quality information, and energy saving information.
  • the at least one first terminal device is a terminal device that needs to transmit data to a third terminal device.
  • the second terminal device receives the second message from the first terminal device, wherein there is more than one first terminal device, and before the second terminal device receives the at least one second message from the at least one first terminal device, at least one first terminal device
  • a terminal device determines that it needs to transmit data to a third terminal device, it needs to determine the available time-frequency resources.
  • the first terminal device sends a second message to the second terminal device, which is used to obtain the time-frequency resource information, which is used to improve the efficiency of data transmission. reliability or reduce power consumption.
  • the second terminal device determines to send time-frequency resource information to the first terminal device, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the information in the received second message.
  • the second terminal device may determine whether to send the time-frequency resource information to the first terminal device according to the information in the received second message. That is, the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the information in the received second message, or the second terminal device may determine not to send time-frequency resource information to the first terminal device according to the information in the received second message The device sends time-frequency resource information.
  • the second terminal device may determine the order of sending the time-frequency resource information to the first terminal device according to the information in the received second message.
  • the second terminal device determines to send time-frequency resource information to the first terminal device according to priority information of the data to be sent by the first terminal device. If multiple first terminal devices request the second terminal device to obtain time-frequency resource information, the second terminal device may determine the first terminal device with the highest priority of the data to be sent according to the priorities of the data to be sent by different first terminal devices Provide time-frequency resource information. If the priority is higher, the value of the priority is lower. If multiple first terminal devices request the second terminal device to obtain time-frequency resource information, the second terminal device can The priority value of the data to be sent determines that the time-frequency resource information is provided to the first terminal device with the lowest priority value of the data to be sent.
  • the second terminal device determines to send time-frequency resource information to the first terminal device according to priority information of the data to be sent by the first terminal device. If multiple first terminal devices request the second terminal device to obtain time-frequency resource information, the second terminal device may provide time-frequency resource information to different first terminal devices in a priority order. If the priority is higher, the value of the priority is lower, and the time-frequency resource information is provided to different first terminal devices in the order of the priority values.
  • the priority values of the data to be sent by the multiple first terminal devices are 1, 2, 3, and 4, respectively, and the second terminal device determines the order of providing time-frequency resource information to different first terminal devices.
  • the corresponding priority value is 1,2,3,4.
  • the second terminal device determines to send time-frequency resource information to the first terminal device according to priority information of the data to be sent by the first terminal device. If only one first terminal device requests the second terminal device to obtain time-frequency resource information, the second terminal device may directly send the time-frequency resource information to the first terminal device.
  • the second terminal device determines to send time-frequency resource information to the first terminal device according to priority information of the data to be sent by the first terminal device. Specifically, the second terminal device may determine to send the time-frequency resource information to the first terminal device whose priority value of the data to be sent is lower than the fifth threshold.
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the delay information.
  • the delay information is delay requirement information of data to be sent, and may include remaining packet delay budget (packet delay budget, PDB) information. If multiple first terminal devices request the second terminal device to acquire time-frequency resource information, the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the time delay requirement. If multiple first terminal devices request the second terminal device to obtain time-frequency resource information, the second terminal device may preferentially send the time-frequency resource information to the first terminal device with the shortest delay requirement.
  • PDB packet delay budget
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the delay information.
  • the delay information is delay requirement information of data to be sent, and may include remaining packet delay budget (packet delay budget, PDB) information.
  • PDB packet delay budget
  • the second terminal device may sort the lengths of the remaining PDB information in the second messages sent by the multiple first terminal devices, and send the time-frequency resource information in an order from short to long. For example, UEA, UEB and UEC all request the second terminal device to obtain time-frequency resources, and the remaining PDBs in the request messages sent by the three UEs are 10ms, 100ms and 50ms respectively, then the second terminal device provides time-frequency resources for the three UEs.
  • the sequence of frequency resource information is UEA, UEC and UEB.
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the delay information.
  • the delay information is delay requirement information of data to be sent, and may include remaining packet delay budget (packet delay budget, PDB) information.
  • PDB packet delay budget
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the broadcast type information.
  • the broadcast type information is the broadcast type of the second message sent by the first terminal device for requesting to obtain the time-frequency resource information, including multicast and unicast. If multiple first terminal devices request the second terminal device to obtain time-frequency resource information, the second terminal device may preferentially send the time-frequency resource information to the first terminal device that sends the second message to the second terminal device in a unicast manner .
  • the first terminal device sends the second message for requesting to obtain time-frequency resource information in a unicast manner, there is only one receiver (second terminal device) that receives the message, and the probability of obtaining the time-frequency resource information is If it is low, sending time-frequency resource information to the first terminal device in time can help the first terminal device save power or improve the reliability of its data transmission.
  • the second message for requesting acquisition of the time-frequency resource information is sent in a multicast manner, there are multiple receivers that receive the message, and the probability of being able to acquire the time-frequency resource information is high.
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the broadcast type information.
  • the broadcast type information is the broadcast type of the second message sent by the first terminal device for requesting to obtain the time-frequency resource information, including multicast, unicast, and broadcast. If multiple first terminal devices request the second terminal device to obtain time-frequency resource information, the first priority order for the second terminal device to send the time-frequency resource information to the first terminal device sending the second message is unicast, and the second The priority order is multicast, and the third priority order is broadcast.
  • the first terminal device sends the second message for requesting to obtain the time-frequency resource information in a unicast manner, there is only one receiver (second terminal device) that receives the message, and the probability of obtaining the time-frequency resource information is compared to Multicast or broadcast is lower. If the second message for requesting acquisition of time-frequency resource information is sent in multicast mode, there are multiple receivers that receive the message, and the probability of being able to acquire time-frequency resource information is lower than Unicast is great. If the second message for requesting to obtain the time-frequency resource information is sent in a multicast manner, there are multiple receivers that receive the message, and the probability of being able to obtain the time-frequency resource information is higher than that of multicast.
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the channel quality information.
  • the channel quality information includes reference signal received power (RSRP) information, received signal strength indicator (RSSI) information, signal-to-noise and interference ratio (signal-to-noise and interference ratio, At least one of SINR) information or channel state information (channel state information, CSI).
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • SINR signal-to-noise and interference ratio
  • At least one of SINR SINR
  • channel state information channel state information
  • the second terminal device may select the first terminal device with the largest RSRP/RSSI/SINR/CSI value to send the time-frequency resource information, that is, select the most stable link to provide it with the time-frequency resource information.
  • the preset condition may be that the RSRP/RSSI/SINR/CSI value is greater than the seventh threshold. That is, a stable link is selected to provide it with time-frequency resource information.
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the energy saving information.
  • the energy saving information includes one or more of information such as whether the first terminal device is in the energy saving mode, the energy saving period, the active period and the dormant period in the energy saving period, and the like.
  • the second terminal device preferentially provides time-frequency resource information for the terminal device in the energy saving mode. If the second terminal device receives multiple energy-saving information from multiple first terminal devices, the second terminal device determines, according to the length of the energy-saving period of the multiple first terminal devices or the ratio of the activation period in the energy-saving period, to different The sequence in which a terminal device provides time-frequency resource information.
  • the energy saving information may be discontinuous reception (Discontinuous Reception, DRX) information, and the energy saving period may be a DRX period.
  • the second terminal device determines to send the time-frequency resource information to the first terminal device, wherein the length of the energy saving period of the first terminal device is the shortest, or the proportion of the activation period in the energy saving period is the smallest.
  • the terminal device in the energy saving mode has limited reception time, and determining resources by means of perception or partial perception will increase the probability of resource conflict or increase system interference. Therefore, for the terminal device in the energy-saving mode, the acquired time-frequency resources are more valuable, because not only the reliability of data transmission is improved, but also the probability of system interference and resource conflict is reduced.
  • the second terminal device may also obtain the priority information, delay information, and broadcast type information of the data to be sent in the second message according to the second terminal device. , one or more of channel quality information, and determine that the N first terminal devices provide time-frequency resource information for them.
  • the size of N may be determined by the second terminal device according to its own capabilities, that is, a UE capability parameter, which may be configured or pre-configured by the network device, or may be configured or pre-configured by the sender (the first terminal device). can also be predefined, and this embodiment of the present application does not make any limitation on this.
  • the second terminal device may determine to send the time-frequency resource information to the first terminal device according to the remaining PDB information and the priority information of the data to be sent.
  • the order of providing the time-frequency resource information to different first terminal devices may be determined according to different weights of the remaining PDB information and the priority information of the data to be sent.
  • the second terminal device may determine the data according to at least one of priority information, delay information, broadcast type information, channel quality information, and energy saving information of the data to be sent by the first terminal device. Sending the time-frequency resource information to the first terminal device, or determining the order in which the time-frequency resource information is sent to the first terminal device, can ensure that the first terminal device uses the available time-frequency resources to send data to the third terminal device, thereby improving Reliability of data transmission.
  • An embodiment of the present application proposes another method for determining resources. As shown in FIG. 7 , a schematic flowchart of another method 700 for determining time-frequency resources according to an embodiment of the present application is shown.
  • the method 700 includes:
  • the first terminal device receives time-frequency resource information from the second terminal device, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information. It should be understood that the second terminal device may actively send the time-frequency resource information to the first terminal device without receiving the message used by the first terminal device for requesting to acquire the time-frequency resource information. Wherein, the first terminal device needs to use the available time-frequency resources to transmit data to the third terminal device.
  • the first terminal device determines to use the time-frequency resource information. It can be understood that the first terminal device determines to use the time-frequency resource information to send data to the third terminal device.
  • the first terminal device may determine to use the time-frequency resource information according to the location information of the second terminal device and/or the location information of the third terminal device.
  • the time-frequency resource information may include location information of the second terminal device.
  • the first terminal device may acquire the location information of the second terminal device, and use it to determine whether the time-frequency resource information is available time-frequency resource information, thereby ensuring the reliability of data transmission.
  • the first terminal device may determine the first distance between the first terminal device and the second terminal device according to the location information of the second terminal device, and determine the use of the first terminal device according to the first distance.
  • Time-frequency resource information Specifically, if the first distance is greater than the eighth threshold, the first terminal device determines to use the time-frequency resource information.
  • the distance between the first terminal device and the second terminal device is very close, the similarity of their channel environments is also high, and the reliability and interference degree of the time-frequency resources determined by perception or partial perception are similar.
  • the The above-mentioned time-frequency resource information is of little value to the first terminal device. Then the first terminal device will not be used.
  • the first terminal equipment receives multiple pieces of time-frequency resource information from multiple second terminal equipments; the time-frequency resource information includes location information of the second terminal equipments.
  • the first terminal device determines, according to the location information of the plurality of second terminal devices, a plurality of first distances between the first terminal device and the plurality of second terminal devices, where the plurality of first distances If the first distance is greater than the eighth threshold, the first terminal device determines to use the time-frequency resource information sent by the second terminal device corresponding to which the first distance is greater than the eighth threshold.
  • the first terminal device may determine the second distance between the second terminal device and the third terminal device according to the location information of the second terminal device and the location information of the third terminal device, and determine the second distance between the second terminal device and the third terminal device according to the second terminal device and the third terminal device.
  • the time-frequency resource information is used for distance determination. Specifically, if the second distance is less than the ninth threshold, the first terminal device determines to use the time-frequency resource information.
  • the distance between the third terminal device and the second terminal device is very close, the similarity of their channel environments is also high, and the reliability and interference degree of the time-frequency resources determined by perception or partial perception are similar.
  • the The time-frequency resource information is of high value to the first terminal device. The reliability of data transmission of the first terminal device can be improved.
  • the first terminal equipment receives multiple pieces of time-frequency resource information from multiple second terminal equipments; the time-frequency resource information includes location information of the second terminal equipments.
  • the first terminal device determines, according to the location information of the plurality of second terminal devices and the location information of the third terminal device, a plurality of distances between the plurality of second terminal devices and the third terminal device. second distance; if a minimum value is determined among the plurality of second distances, the first terminal device determines to use the time-frequency resource information sent by the second terminal device corresponding to the minimum value.
  • the first terminal device may determine the first distance between the first terminal device and the second terminal device, determine the second the second distance between the terminal device and the third terminal device, and use the time-frequency resource information according to the first distance and the second distance. Specifically, if the first distance is greater than the eighth threshold and the second distance is less than the ninth threshold, the first terminal device determines to use the time-frequency resource information.
  • the first terminal device may determine whether to use the time-frequency resource information according to the location information of the second terminal device and/or the location information of the third terminal device.
  • the first terminal device may determine the first distance between the first terminal device and the second terminal device according to the location information of the second terminal device, and determine whether to use the first terminal device according to the first distance The time-frequency resource information. Specifically, if the first distance is greater than the eighth threshold, the first terminal device determines to use the time-frequency resource information; if the first distance is less than or equal to the eighth threshold, the first terminal device determines not to use the time-frequency resource information .
  • the first terminal device may also determine the time-frequency resource information by itself.
  • the determined time-frequency resource information may be understood as the time-frequency resource information determined by itself through a resource selection manner of perception or partial perception or random selection.
  • the first terminal device only uses the time-frequency resource information sent by the second terminal device.
  • the first terminal device may determine the second distance between the second terminal device and the third terminal device according to the location information of the second terminal device and the location information of the third terminal device, and determine the second distance between the second terminal device and the third terminal device according to the second terminal device and the third terminal device.
  • the distance determines whether to use the time-frequency resource information. Specifically, if the second distance is less than the ninth threshold, the first terminal device determines to use the time-frequency resource information; if the second distance is greater than or equal to the ninth threshold, the first terminal device determines not to use the time-frequency resource information.
  • the first terminal device needs to send data to the third terminal device.
  • the time-frequency resource information determined by the second terminal device is relatively close to the resource situation of the third terminal device.
  • the time-frequency resource information sent by the second terminal device is relatively close.
  • the resource information is valuable to the first terminal device.
  • the time-frequency resource information sent by the second terminal device is quite different from the resource situation determined by the third terminal device through perception or partial perception.
  • the second terminal device The time-frequency resource information sent by the device is of low value or meaningless to the first terminal device. Therefore, the first terminal device uses the time-frequency resource information sent by the second terminal device only when the distance between the second terminal device and the third terminal device is smaller than the ninth threshold.
  • the first terminal device may determine the first distance between the first terminal device and the second terminal device, determine the second The second distance between the terminal device and the third terminal device, and whether to use the time-frequency resource information is determined according to the first distance and the second distance. Specifically, if the first distance is greater than the eighth threshold and the second distance is less than the ninth threshold, the first terminal device determines to use the time-frequency resource information; if the first distance is less than or equal to the eighth threshold and the second distance is greater than or equal to the ninth threshold, the first terminal device determines not to use the time-frequency resource information.
  • the first terminal device may also send a location information request message to the third terminal device to obtain the location information of the third terminal device; the third terminal device The location information of the third terminal device is sent to the first terminal device according to the location information request message; the first terminal device receives the location information of the third terminal device sent by the third terminal device.
  • the location information of the third terminal device may be carried in one of the following information: the first-level sidelink control information SCI, the second-level sidelink control information SCI, or the medium access control layer control element MAC. CE.
  • the location information may be a zone identifier.
  • the first terminal device determines to use the time-frequency resource information according to the location information of the second terminal device and/or the location information of the third terminal device.
  • the reliability of data transmission of the first terminal device can be improved.
  • FIG. 8 a schematic block diagram of a communication apparatus 800 according to an embodiment of the present application is shown.
  • the apparatus may be applied to the second terminal device in this embodiment of the present application.
  • the communication device 800 includes: a transceiving unit 810 and a determining unit 820.
  • the transceiving unit 810 is configured to receive a first message sent by a first terminal device, where the first message is used to acquire time-frequency resource information, and the first message includes The location information of the first terminal device and/or the location information of a third terminal device, wherein the third terminal device is the target terminal device that the first terminal device needs to transmit data;
  • the determining unit 820 is configured to determine to send the time-frequency resource information to the first terminal device, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the determining unit 820 is specifically configured to determine, according to the location information, to send the time-frequency resource information to the first terminal device.
  • the determining unit 820 is specifically configured to, according to the location information of the first terminal device, determine a first distance between the second terminal device and the first terminal device; if the first distance is greater than The first threshold is determined, the time-frequency resource information is determined to be sent to the first terminal device.
  • the determining unit 820 is specifically configured to, according to the location information of the third terminal device, determine the second distance between the second terminal device and the third terminal device; if the second distance is less than For the second threshold, it is determined to send the time-frequency resource information to the first terminal device.
  • the determining unit 820 is specifically configured to, according to the location information of the first terminal device and the location information of the third terminal device, determine the first terminal device between the second terminal device and the first terminal device. a distance, the second distance between the second terminal device and the third terminal device; if the first distance is greater than a first threshold and the second distance is less than a second threshold A terminal device sends the time-frequency resource information.
  • the location information of the first terminal device and/or the location information of the third terminal device is carried in one of the following information: the first-level sidelink control information SCI, the second-level sidelink Path control information SCI or medium access control layer control element MAC CE.
  • the location information includes a zone identifier.
  • An embodiment of the present application proposes a communication apparatus.
  • FIG. 9 a schematic block diagram of a communication apparatus 900 according to an embodiment of the present application is shown.
  • the apparatus may be applied to the first terminal device in the embodiment of the present application.
  • the communication device 900 includes: an acquisition unit 910 and a determination unit 920.
  • the acquisition unit 910 is configured to acquire the location information of the second terminal device and/or the location information of the third terminal device, wherein the third terminal device is the first terminal device.
  • the determining unit 920 is configured to determine to send a first message to the second terminal device, where the first message is used to acquire time-frequency resource information, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information. frequency resource information.
  • the determining unit 920 is specifically configured to determine, according to the location information, to send the first message to the second terminal device.
  • the determining unit 920 is specifically configured to, according to the location information of the second terminal device, determine the first distance between the first terminal device and the second terminal device; if the first distance is greater than For the third threshold, it is determined to send the first message to the second terminal device.
  • the determining unit 920 is specifically configured to, according to the location information of the second terminal device and the location information of the third terminal device, determine the third terminal device between the second terminal device and the third terminal device. two distances; if the second distance is less than a fourth threshold, it is determined to send the first message to the second terminal device.
  • the second terminal device is a terminal device closest to the third terminal device among at least one fourth terminal device.
  • the determining unit 920 is specifically configured to, according to the location information of the second terminal device and the location information of the third terminal device, determine the first terminal device between the first terminal device and the second terminal device. a distance, determining a second distance between the second terminal device and the third terminal device; if the first distance is greater than a third threshold and the second distance is less than a fourth threshold, determining The second terminal device sends the first message.
  • the obtaining unit 910 is specifically configured to send a location information request message to the second terminal device and/or the third terminal device; receive the location of the second terminal device sent by the second terminal device information, and/or receiving the location information of the third terminal device sent by the third terminal device.
  • the location information of the second terminal device and/or the location information of the third terminal device is carried in one of the following information: the first-level sidelink control information SCI, the second-level sidelink Path control information SCI or medium access control layer control element MAC CE.
  • the location information includes a zone identifier.
  • An embodiment of the present application proposes a communication apparatus.
  • FIG. 10 a schematic block diagram of a communication apparatus 1000 according to an embodiment of the present application is shown.
  • the apparatus may be applied to the second terminal device in this embodiment of the present application.
  • the communication device 1000 includes: a transceiving unit 1010 and a determining unit 1020, the transceiving unit 1010 is configured to receive at least one second message from at least one first terminal device, the second message is used to acquire time-frequency resource information, the first The second message includes at least one of priority information, delay information, broadcast type information, and channel quality information of the data to be sent by the first terminal device;
  • the determining unit 1020 is configured to determine to send the time-frequency resource information to the first terminal device, where the time-frequency resource information includes available time-frequency resource information or unavailable time-frequency resource information.
  • the determining unit 1020 is specifically configured to determine, according to the second message, to send the time-frequency resource information to the first terminal device.
  • the determining unit 1020 is specifically configured to, according to the priority information of the data to be sent by the first terminal device, determine to send the time-frequency resource information to the first terminal device, wherein the first terminal device The priority value of the data to be sent is lower than the fifth threshold.
  • the determining unit 1020 is specifically configured to, according to the delay information, determine to send the time-frequency resource information to the first terminal device, where the first terminal device has the shortest delay.
  • the determining unit 1020 is specifically configured to, according to the broadcast type information, determine to send the time-frequency resource information to the first terminal device, wherein the second message sent by the first terminal device is: sent in unicast.
  • the determining unit 1020 is specifically configured to, according to the channel quality information, determine to send the time-frequency resource information to the first terminal device, wherein the channel quality information of the first terminal device satisfies a predetermined condition. Set conditions.
  • the delay information includes remaining packet delay budget PDB information.
  • the channel quality information includes at least one of: reference signal received power RSRP information, received signal strength indicator RSSI information, signal-to-noise ratio and interference ratio SINR information, or channel state information CSI.
  • An embodiment of the present application provides a communication device 1100. As shown in FIG. 11, a schematic block diagram of a communication device 1000 according to an embodiment of the present application is shown.
  • the device 1100 includes: a processor 1110 and a transceiver 1120, the transceiver 1120 is configured to receive computer codes or instructions and transmit them to the processor 1110, and the processor 1110 executes the computer codes or instructions, as described herein. A method in any possible implementation manner in the application embodiments.
  • the above-mentioned processor 1110 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA), or other possible solutions. Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Programming logic devices, discrete gate or transistor logic devices, discrete hardware components The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory described above may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SCRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the above-mentioned memory may be integrated in the processor, or the above-mentioned processor and the memory may also be integrated on the same chip, or may be respectively located on different chips and connected by means of interface coupling. This embodiment of the present application does not limit this.
  • An embodiment of the present application provides a communication system 1200, including a first terminal device 1210, a second terminal device 1220, and a third terminal device 1230 in the method for determining resources provided by the embodiment of the present application.
  • a schematic block diagram of a communication device 1200 according to an embodiment of the present application is shown.
  • the embodiments of the present application further provide a computer-readable storage medium, on which a computer program for implementing the methods in the foregoing method embodiments is stored.
  • a computer program for implementing the methods in the foregoing method embodiments is stored.
  • the computer program runs on a computer, the computer can implement the methods in the above method embodiments.
  • the term "and/or” in this application is only an association relationship to describe associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time. , there are three cases of B alone.
  • the character "/" in this document generally indicates that the contextual object is an "or” relationship; the term “at least one” in this application can mean “one” and "two or more", for example, A At least one of , B, and C can mean: A alone exists, B exists alone, C exists alone, A and B exist simultaneously, A and C exist simultaneously, C and B exist simultaneously, and A and B and C exist simultaneously. seven situations.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, removable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请提供了一种确定资源的方法和装置，能够提高数据传输的可靠性，该方法包括：第二终端设备接收第一终端设备发送的第一消息，该第一消息用于获取时频资源信息，该第一消息中包括第一终端设备的位置信息和/或第三终端设备的位置信息，其中，第三终端设备为第一终端设备需要传输数据的目标终端设备；第二终端设备确定向第一终端设备发送所述时频资源信息，该时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。

Description

确定资源的方法和装置 技术领域
本申请涉及通信领域，并且更具体地，涉及一种确定资源的方法和装置。
背景技术
在车联通信(vehicle to everything，V2X)系统中，车载终端设备之间的连接为侧行链路(sidelink，SL)，第一终端设备通过sidelink向第三终端设备发送数据的时候需要确定可用的时频资源，在一种实现方式中，第一终端设备可以向基站请求获取时频资源，在另一种实现方式中，第一终端设备可以从资源池中选取时频资源向第三终端设备发送数据。第一终端设备从资源池中选取时频资源向第三终端设备发送数据之前，需要确定资源池中哪些时频资源可用，或者需要确定哪些时频资源不可用。
目前，第一终端设备可以通过向其他终端设备发送资源请求消息，请求获取可以使用的时频资源的信息或者不可以使用的时频资源的信息，然后根据获取到的时频资源信息向第三终端设备发送数据。但是，其他终端设备提供的时频资源信息不一定是有用的。
发明内容
本申请提供了一种确定资源的方法和装置，能够提高数据传输的可靠性。
第一方面，提供一种确定资源的方法，包括：第二终端设备接收第一终端设备发送的第一消息，所述第一消息用于获取时频资源信息，所述第一消息中包括所述第一终端设备的位置信息和/或第三终端设备的位置信息，其中，所述第三终端设备为所述第一终端设备需要传输数据的目标终端设备；所述第二终端设备确定向所述第一终端设备发送所述时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
基于上述技术方案，第二终端设备可以根据其与第一终端设备之间的距离和/或与第三终端设备之间的距离，确定是否向第一终端设备提供时频资源信息，可以确保提供的时频资源信息对第一终端设备来说具有参考价值，使第一终端设备选取可用的时频资源向第三终端设备发送数据，从而可以提高数据传输的可靠性。
在一种可能的实现方式中，所述第二终端设备确定向所述第一终端设备发送所述时频资源信息，包括：所述第二终端设备根据所述位置信息确定向所述第一终端设备发送所述时频资源信息。
在一种可能的实现方式中，所述第二终端设备根据所述位置信息确定向所述第一终端设备发送所述时频资源信息，包括：所述第二终端设备根据所述第一终端设备的位置信息，确定所述第二终端设备与所述第一终端设备之间的第一距离；若所述第一距离大于第一阈值，则所述第二终端设备确定向所述第一终端设备发送所述时频资源信息。
在一种可能的实现方式中，所述第二终端设备根据所述位置信息确定向所述第一终端设备发送所述时频资源信息，包括：所述第二终端设备根据所述第三终端设备的位置信息， 确定所述第二终端设备与所述第三终端设备之间的第二距离；若所述第二距离小于第二阈值，则所述第二终端设备确定向所述第一终端设备发送所述时频资源信息。
在一种可能的实现方式中，所述第二终端设备根据所述位置信息确定向所述第一终端设备发送所述时频资源信息，包括：所述第二终端设备根据所述第一终端设备的位置信息和所述第三终端设备的位置信息，确定所述第二终端设备与所述第一终端设备之间的第一距离、所述第二终端设备与所述第三终端设备之间的第二距离；若所述第一距离大于第一阈值且所述第二距离小于第二阈值，则所述第二终端设备确定向所述第一终端设备发送所述时频资源信息。
在一种可能的实现方式中，所述第一终端设备的位置信息和/或所述第三终端设备的位置信息承载于以下信息的一个中：第一级侧行链路控制信息SCI、第二级侧行链路控制信息SCI或媒体接入控制层控制元素MAC CE。
在一种可能的实现方式中，所述位置信息包括区标识。
第二方面，提供一种确定资源的方法，包括：第一终端设备获取第二终端设备的位置信息和/或第三终端设备的位置信息，其中，所述第三终端设备为所述第一终端设备需要传输数据的目标终端设备；所述第一终端设备确定向所述第二终端设备发送第一消息，所述第一消息用于获取时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
基于上述技术方案，第一终端设备根据其与第二终端设备之间的距离和/或与第三终端设备之间的距离，确定是否向第二终端设备请求获取时频资源信息，可以确保获取到的时频资源信息对第一终端设备来说具有参考价值，使第一终端设备选取可用的时频资源向第三终端设备发送数据，从而可以提高数据传输的可靠性。
在一种可能的实现方式中，所述第一终端设备确定向所述第二终端设备发送第一消息，包括：所述第一终端设备根据所述位置信息确定向所述第二终端设备发送所述第一消息。
在一种可能的实现方式中，所述第一终端设备根据所述位置信息确定向所述第二终端设备发送所述第一消息，包括：所述第一终端设备根据所述第二终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离；若所述第一距离大于第三阈值，则所述第一终端设备确定向所述第二终端设备发送所述第一消息。
在一种可能的实现方式中，所述第一终端设备根据所述位置信息确定向所述第二终端设备发送所述第一消息，包括：所述第一终端设备根据所述第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述第二终端设备与所述第三终端设备之间的第二距离；若所述第二距离小于第四阈值，则所述第一终端设备确定向所述第二终端设备发送所述第一消息。
在一种可能的实现方式中，所述第二终端设备是至少一个第四终端设备中和所述第三终端设备的距离最近的终端设备。
在一种可能的实现方式中，所述第一终端设备根据所述位置信息确定向所述第二终端设备发送所述第一消息，包括：所述第一终端设备根据所述第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离、确定所述第二终端设备与所述第三终端设备之间的第二距离；若所述第一距离大于第 三阈值且所述第二距离小于第四阈值，则所述第一终端设备确定向所述第二终端设备发送所述第一消息。
在一种可能的实现方式中，所述第一终端设备获取第二终端设备的位置信息和/或第三终端设备的位置信息，包括：所述第一终端设备向所述第二终端设备和/或所述第三终端设备发送位置信息请求消息；所述第一终端设备接收所述第二终端设备发送的所述第二终端设备的位置信息，和/或，所述第一终端设备接收所述第三终端设备发送的所述第三终端设备的位置信息。
在一种可能的实现方式中，所述第二终端设备的位置信息和/或所述第三终端设备的位置信息承载于以下信息的一个中：第一级侧行链路控制信息SCI、第二级侧行链路控制信息SCI或媒体接入控制层控制元素MAC CE。
在一种可能的实现方式中，所述位置信息包括区标识。
第三方面，提供一种确定资源的方法，包括：第二终端设备接收来自至少一个第一终端设备的至少一个第二消息，所述第二消息用于获取时频资源信息，所述第二消息中包括所述第一终端设备待发数据的优先级信息、时延信息、播类型信息、信道质量信息、节能信息中的至少一种；所述第二终端设备确定向所述第一终端设备发送所述时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
基于上述技术方案，第二终端设备可以根据第一终端设备待发数据的优先级信息、时延信息、播类型信息、信道质量信息、节能信息中的至少一种，确定向第一终端设备发送时频资源信息，或者确定向第一终端设备发送时频资源信息的顺序，可以确保第一终端设备使用可用的时频资源向第三终端设备发送数据，从而可以提高数据传输的可靠性。定义了第二终端设备在接收多个第二消息时的行为，提高了通信效率。
在一种可能的实现方式中，所述第二终端设备确定向所述第一终端设备发送所述时频资源信息，包括：所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息。
在一种可能的实现方式中，所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息，包括：所述第二终端设备根据所述第一终端设备待发数据的优先级信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备待发数据的优先级值低于第五阈值。
在一种可能的实现方式中，所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息，包括：所述第二终端设备根据所述时延信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备的时延最短。
在一种可能的实现方式中，所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息，包括：所述第二终端设备根据所述播类型信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备发送的所述第二消息是以单播方式发送的。
在一种可能的实现方式中，所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息，包括：所述第二终端设备根据所述信道质量信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备的所述信道质量信息满足预设条件。
在一种可能的实现方式中，所述时延信息包括剩余包时延预算PDB信息。
在一种可能的实现方式中，所述信道质量信息包括：参考信号接收功率RSRP信息、接收信号强度指示RSSI信息、信噪比和干扰比SINR信息或信道状态信息CSI中的至少一种。
在一种可能的实现方式中，第二终端设备根据剩余包时延预算PDB信息和待发数据的优先级信息，确定向第一终端设备发送时频资源信息。
在一种可能的实现方式中，第二终端设备根据剩余包时延预算PDB信息和待发数据的优先级信息的不同权重，确定向不同第一终端设备提供时频资源信息的顺序。
在一种可能的实现方式中，节能信息包括第一终端设备是否处于节能模式，节能的周期，节能的周期内激活期和休眠期等信息中的一个或多个。第二终端设备根据节能信息确定向第一终端设备提供时频资源信息。当第一消息中包括节能信息，第二终端设备优先为处于节能模式的终端设备提供时频资源信息。如果第二终端设备收到来自多个第一终端设备的多个节能信息，第二终端设备根据多个第一终端设备节能的周期的长度或者节能的周期内的激活期占比确定向不同第一终端设备提供时频资源信息的顺序。
或者第二终端设备确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备的节能的周期的长度最短，或者节能的周期内的激活期的占比最小。
这是因为处于节能模式的终端设备接收的时间有限，通过感知或部分感知的方式确定资源会增加资源冲突的概率或者增加系统干扰。因此对于节能模式中的终端设备而言，获取的时频资源更有价值，因为不仅提高数据传输的可靠性并且减少了系统干扰和资源冲突的概率。
第四方面，提供一种确定资源的方法，包括：第一终端设备向第二终端设备发送第二消息，所述第二消息用于获取时频资源信息，所述第二消息中包括所述第一终端设备待发数据的优先级信息、时延信息、播类型信息、信道质量信息、节能信息中的至少一种。
第五方面，提供一种确定资源的方法，包括：第一终端设备接收来自第二终端设备的时频资源信息；所述第一终端设备确定使用所述时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
在一种可能的实现方式中，所述第一终端设备根据所述第二终端设备的位置信息和/或所述第三终端设备的位置信息确定使用所述时频资源信息，其中，所述第三终端设备为所述第一终端设备需要传输数据的目标终端设备。
基于上述技术方案，第一终端设备根据所述第二终端设备的位置信息和/或所述第三终端设备的位置信息确定使用所述时频资源信息。可以提高第一终端设备数据传输的可靠性。
在一种可能的实现方式中，所述时频资源信息中包括所述第二终端设备的位置信息。第一终端设备可以获取第二终端设备的位置信息，并用于确定所述时频资源信息是否为可用的时频资源信息，进而保证数据传输的可靠性。
在一种可能的实现方式中，所述第一终端设备根据所述第二终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离；若所述第一距离大于第八阈值，则所述第一终端设备确定使用所述时频资源信息。当第一终端设备和第二终端设备的距离很近时，他们的信道环境相似度也很高，通过感知或部分感知的方式确定的时频资源 的可靠性和干扰程度相似，相应的，所述时频资源信息对于第一终端设备来说价值不高。则第一终端设备不会使用。
在一种可能的实现方式中，第一终端设备接收来自多个第二终端设备的多个时频资源信息；所述时频资源信息中包括所述第二终端设备的位置信息。所述第一终端设备根据所述多个第二终端设备的位置信息，确定所述第一终端设备与所述多个第二终端设备之间的多个第一距离，在多个第一距离中确定大于第八阈值的所述第一距离，则所述第一终端设备确定使用第一距离大于第八阈值对应的第二终端设备发送的所述时频资源信息。
在一种可能的实现方式中，所述第一终端设备根据所述第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述第二终端设备与所述第三终端设备之间的第二距离；若所述第二距离小于第九阈值，则所述第一终端设备确定使用所述时频资源信息。当第三终端设备和第二终端设备的距离很近时，他们的信道环境相似度也很高，通过感知或部分感知的方式确定的时频资源的可靠性和干扰程度相似，相应的，所述时频资源信息对于第一终端设备来说价值很高。可以提高第一终端设备数据传输的可靠性。
在一种可能的实现方式中，第一终端设备接收来自多个第二终端设备的多个时频资源信息；所述时频资源信息中包括所述第二终端设备的位置信息。所述第一终端设备根据所述多个第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述多个第二终端设备与所述第三终端设备之间的多个第二距离；在多个第二距离中确定最小值，则所述第一终端设备确定使用所述最小值对应的第二终端设备发送的所述时频资源信息。
在一种可能的实现方式中，所述第一终端设备根据所述第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离、确定所述第二终端设备与所述第三终端设备之间的第二距离；若所述第一距离大于第八阈值且所述第二距离小于第九阈值，则所述第一终端设备确定使用所述时频资源信息。
在一种可能的实现方式中，在所述第一终端设备确定使用所述时频资源信息之前，所述方法还包括：所述第一终端设备向所述第三终端设备发送位置信息请求消息；所述第一终端设备接收所述第三终端设备发送的所述第三终端设备的位置信息。
在一种可能的实现方式中，所述第三终端设备的位置信息承载于以下信息的一个中：第一级侧行链路控制信息SCI、第二级侧行链路控制信息SCI或媒体接入控制层控制元素MAC CE。
在一种可能的实现方式中，所述位置信息包括区标识。
第六方面，提供了一种通信装置，包括用于实现如第一方面或第一方面任意可能的实现方式中的方法的功能的单元。
第七方面，提供了一种通信装置，包括用于实现如第二方面或第二方面任意可能的实现方式中的方法的功能的单元。
第八方面，提供了一种通信装置，包括用于实现如第三方面或第三方面任意可能的实现方式中的方法的功能的单元。
第九方面，提供了一种通信设备，包括：处理器和收发器，所述收发器用于接收计算机代码或指令，并传输至所述处理器，所述处理器运行所述计算机代码或指令，如第一方面或第一方面任意可能的实现方式中的方法。
第十方面，提供了一种通信设备，包括：处理器和收发器，所述收发器用于接收计算 机代码或指令，并传输至所述处理器，所述处理器运行所述计算机代码或指令，如第二方面或第二方面任意可能的实现方式中的方法。
第十一方面，提供了一种通信设备，包括：处理器和收发器，所述收发器用于接收计算机代码或指令，并传输至所述处理器，所述处理器运行所述计算机代码或指令，如第三方面或第三方面任意可能的实现方式中的方法。
第十二方面，提供了一种通信系统，包括第一方面、第二方面或第三方面所述方法中的第一终端设备、第二终端设备和第三终端设备。
第十三方面，提供了一种计算机可读存储介质，所述计算机可读介质存储有计算机程序；所述计算机程序在计算机上运行时，使得计算机执行第一方面至第三方面或第一方面至第三方面任意可能的实现方式中的方法。
附图说明
图1为一种确定资源的方法的示意性交互流程图。
图2为UE检测时频资源的时序示意图。
图3为本申请实施例的一种确定时频资源的方法的示意性流程图。
图4为本申请实施例的不同终端设备的位置关系示意图。
图5为本申请实施例的另一种确定时频资源的方法的示意性流程图。
图6为本申请实施例的另一种确定时频资源的方法的示意性流程图。
图7为本申请实施例的另一种确定时频资源的方法的示意性流程图。
图8为本申请实施例的一种通信装置的示意性框图。
图9为本申请实施例的另一种通信装置的示意性框图。
图10为本申请实施例的另一种通信装置的示意性框图。
图11为本申请实施例的一种通信设备的示意性框图。
图12为本申请实施例的一种通信系统的示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例可以应用于各种通信系统，例如侧行通信系统(sidelink communication)、车联通信(vehicle to everything，V2X)系统、无线局域网系统(wireless local area network，WLAN)、窄带物联网系统(narrow band-internet of things，NB-IoT)、全球移动通信系统(global system for mobile communications，GSM)、增强型数据速率GSM演进系统(enhanced data rate for gsm evolution，EDGE)、宽带码分多址系统(wideband code division multiple access，WCDMA)、码分多址2000系统(code division multiple access，CDMA2000)、时分同步码分多址系统(time division-synchronization code division multiple access，TD-SCDMA)，长期演进系统(long term evolution，LTE)、卫星通信、第五代(5th generation，5G)系统或者将来出现的新的通信系统等。
本申请实施例中所涉及到的终端设备可以为包含无线收发功能、且可以为用户提供通讯服务的设备。具体地，终端设备可以为V2X系统中的设备、设备对设备(device to device，D2D)系统中的设备、机器类型通信(machine type communication，MTC)系统中的设备 等。可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备。终端可以是移动台(mobile station，MS)、用户单元(subscriber unit)、用户设备(user equipment,UE)、蜂窝电话(cellular phone)、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handset)、膝上型电脑(laptop computer)、机器类型通信(machine type communication，MTC)终端等。
本申请实施例中所涉及到的网络设备主要指基站，也称为无线接入点，收发站，中继站，小区，收发点，演进型基站，新一代基站，路边站点单元(road site unit，RSU)等，本申请实施例对此不做限定。
在V2X通信系统中，包括终端与终端之间的传输，车辆与终端之间的传输以及网络设备/基站与终端/车辆之间的传输。车载终端需要与网络保持连接，以获得一些配置信息，也需要与其他车载终端保持连接，以实现车载通信。车载终端设备与基站之间的连接为上行链路和下行链路，车载终端设备之间的连接为侧行链路(sidelink，SL)。
为了方便对本申请实施例的理解，对混合自动重传请求(hybrid automatic repeat request，HARQ)技术和V2X技术进行简单介绍。
HARQ是一种结合前向纠错(前向纠错码)(forward error correction，FEC)与自动重传请求(automatic repeat request，ARQ)方法的技术结合起来的技术。无线通信系统中，收发双方通常采用HARQ技术来保证数据传输的正确性。数据块编码后，即传输块(transport block，TB)编码后，第一次传输时发送信息比特和一部分冗余比特，如果接收端能够正确译码，则反馈肯定确认(acknowledgement，ACK)信号给发送端，则发送端确认接收到已经成功接收到所对应的信息比特，认为该TB已经成功传输。如果接收端不能够正确译码，则反馈否定确认(negative acknowledgement，NACK)给发送端。发送端接收到NACK后，则再进一步传输一部分信息比特和/或冗余比特给接收端，称为重传数据，接收端接收到重传数据后，与之前接收到的数据合并后进行译码，如果加上重传的冗余比特仍然无法正常解码，则进行再次重传。随着重传次数的增加，冗余比特不断积累，信道编码率不断降低，从而可以获得更好的解码效果。
V2X技术中，在标准循环前缀(normal cyclic prefix，NCP)下，一个时隙包括14个符号，一个时隙内用于承载物理侧行链路控制信道(physical sidelink control channel，PSCCH)的符号个数是在每个资源池上配置的。PSCCH的候选物理资源块(physical resource block，PRB)的个数是每个资源池配置的，PSCCH承载于子信道中。每个时隙的第一个符号用于自动增益控制(automatic gain control,AGC)，最后一个符号为保护间隔。PSCCH中承载第一级侧行链路控制信息(sidelink control information，SCI)，PSSCH中承载第二级SCI。
第一终端设备通过sidelink向第三终端设备发送数据的时候需要确定可用的时频资源，在一种实现方式中，第一终端设备可以向基站请求获取时频资源，在另一种实现方式中，第一终端设备可以从资源池中选取时频资源向第三终端设备发送数据。
第一终端设备从资源池中选取时频资源向第三终端设备发送数据之前，需要确定资源 池中哪些时频资源可用，或者需要确定哪些时频资源不可用。在现有的技术方案中，第一终端设备通过向其他UE发送资源请求消息，请求获取可以使用的时频资源的信息或者不可以使用的时频资源的信息，然后根据获取到的时频资源信息从资源池中选取可用的时频资源向第三终端设备发送数据。如图1所示，出示了一种确定资源的方法，该方法包括：
110，第一终端设备向第二终端设备发送时频资源请求消息，以获取时频资源信息，该时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。应理解，第二终端设备可以是除了第一终端设备和第三终端设备之外的任意UE。
120，第二终端设备接收第一终端设备发送的时频资源请求消息，并根据该时频资源请求消息确定一个时频资源集合，该时频资源集合可以是可用的时频资源集合，也可以是不可用的时频资源集合，第二终端设备向第一终端设备发送该时频资源集合。第一终端设备接收到第二终端设备发送的时频资源集合之后，使用可用的时频资源向第三终端设备发送数据。
可选的，第二终端设备在没有接收到第一终端设备发送的时频资源请求消息的情况下，也可以主动确定时频资源集合，在确定完时频资源集合之后，主动向第一终端设备发送该时频资源集合。
现有技术方案中，第一终端设备向第二终端设备发送时频资源请求消息，该第二终端设备确定的时频资源集合对第一终端设备来说不一定是有用的。例如，若该第二终端设备距离第三终端设备的距离比较远，第二终端设备检测到的可用的时频资源或不可用的时频资源，与第三终端设备检测到的不同，此时，第一终端设备根据第二终端设备发送的时频资源信息选取的时频资源可能是不可用的或者已被其他UE占用的。除此之外，第二终端设备接收到第一终端设备发送的时频资源请求消息之后，若其确定的时频资源集合对第一终端设备来说是无用的，还向第一终端设备发送该时频资源集合，则会浪费资源，会增加系统的干扰。
因此，本申请实施例提出了一种确定资源的方法，可以提高数据传输的可靠性。
为了便于对本申请实施例的理解，对UE检测时频资源进行简单介绍。如图2所示，出示了UE检测时频资源的时序示意图。在n时刻，UE被触发了一个资源选择或资源重选，则资源检测窗口(sensing window)为时隙
Figure PCTCN2020107962-appb-000001
其中T 0由基站配置，
Figure PCTCN2020107962-appb-000002
取决于子载波间隔，不同子载波间隔下
Figure PCTCN2020107962-appb-000003
的取值不同，如表1所示。[n+T 1，n+T 2]为资源选择窗口。UE根据第一级SCI指示的资源信息、优先级信息以及参考信号接收功率(reference signal received power，RSRP)来确定可用的时频资源或者不可用的时频资源。如图2中所示，PSCCH1中承载的第一级SCI指示的2个资源在资源选择窗中，并且RSRP测量值高于一个阈值，则排除资源选择窗口中的该2个资源；PSCCH2中承载的第一级SCI指示的2个资源在资源选择窗口中，并且RSRP测量值高于一个阈值，则排除资源选择窗口中的该2个资源。资源选择窗口的全部资源中排除后的资源确定为候选资源集合上报给高层。
表1不同子载波间隔下
Figure PCTCN2020107962-appb-000004
的取值
Figure PCTCN2020107962-appb-000005
Figure PCTCN2020107962-appb-000006
如图3所示，出示了本申请实施例的一种确定时频资源的方法300的示意性流程图，该方法300包括：
310，第二终端设备接收第一终端设备发送的第一消息，该第一消息用于向该第二终端设备请求获取时频资源信息，该时频资源信息可以是该第二终端设备检测到的可用的时频资源信息，也可以是该第二终端设备检测到的不可用的时频资源信息。第二终端设备接收第一终端设备发送的第一消息可以理解为第二终端设备接收来自第一终端设备的第一消息。该时频资源信息可以理解为资源信息，资源辅助信息或者辅助信息。可选的，该第一消息中可以仅包括第一终端设备的位置信息，可以仅包括第三终端设备的位置信息，还可以同时包括第一终端设备的位置信息和第三终端设备的位置信息，第三终端设备可以不止一个，第三终端可以是一组终端设备。其中，第三终端设备为第一终端设备需要传输数据的目标终端设备。第一终端设备、第二终端设备和第三终端设备可以为V2X通信系统中的终端设备，也可以为侧行通信系统中的终端设备，本发明对终端设备的类型不做限定。如图4所示，出示了不同终端设备的位置关系示意图。
应理解，第一终端设备的位置信息可以是第一终端设备的区标识(zone Identity，zone ID)，第二终端设备的位置信息可以是第二终端设备的zone ID。为了便于对本申请实施例的理解，对V2X中的zone ID进行简单介绍。
假设高层参数侧行链路区配置(sidelink-ZoneConfiguration，sl-ZoneConfig)被配置了，UE可以根据下述公式确定一个zone的标识，比如zone ID，UE位于该zone内。
x1＝Floor(x/L)Mod 64
y1＝Floor(y/W)Mod 64
zone_id＝y1*64+x1
上述公式中的参数定义如下：L和W是sl-ZoneConfig包括的sl-ZoneLength的相同的值。x是UE的现在的位置和地理坐标(0，0)之间的经度上的测地距离(geodesic distance)，根据WGS84模型；单位用米来表示。y是UE的现在的位置和地理坐标(0,0)之间的纬度上的测地距离(geodesic distance)，根据WGS84模型；单位用米来表示。高层参数sl-ZoneConfig用来配置zone ID相关的参数，是基站配置给UE的。Sl-ZoneLength指示每个地理区域的长度。资源池上配置了zone相关的信息。
可选的，为了得到更精确的位置信息，进而提高第一终端设备数据传输的可靠性。可以减少zone划分的粒度，即公式为
x1＝Floor(x/L)Mod 128
y1＝Floor(y/W)Mod 128
zone_id＝y1*128+x1
第一终端设备向第三终端设备传输数据之前，需要从资源池中选取时频资源，因此，该第一终端设备需要确定哪些时频资源不可用、哪些时频资源可用。可选的，和310相对应，第一终端设备可以向第二终端设备发送第一消息，用于获取时频资源信息。
可选的，第一终端设备向第二终端设备发送的用于请求获取时频资源信息的第一消息中包括的第一终端设备的位置信息和/或第三终端设备的位置信息可以承载于第一级SCI中，该第一级SCI中用一个字段来指示位置信息。该字段包括12比特。可选的，该第一级SCI中可以包括该第一终端设备待发数据的优先级信息、时延信息、预留周期中的一个或多个指示信息。
可选的，第一终端设备向第二终端设备发送的用于请求获取时频资源信息的第一消息中包括的第一终端设备的位置信息和/或第三终端设备的位置信息可以承载于第二级SCI中，该第二级SCI中用一个字段来指示位置信息。该字段包括12比特。
具体而言，可选的，该第二级SCI中可以用1比特指示该第二SCI中的zone ID字段用于获知其他终端设备的zone ID。例如第三终端设备的zone ID，而不是用于HARQ反馈的第一终端设备的zone ID。例如，该1比特指示为1时，表示该zone ID用于HARQ反馈；该1比特指示为0时，表示该位置信息用于获知其他终端设备的zone ID。应理解，在现有技术中，组播支持HARQ反馈，反馈的方式有两种，一种是接收端接收到数据之后反馈ACK或者NACK，另一种是接收端接收到数据之后只反馈NACK。例如，发送端发送一个组播数据包，第二级SCI中包括zone ID，接收端接收到该数据包后，根据自身的位置信息和该第二级SCI中包括的zone ID指示的距离最近的zone内的中心点，算出距离，和通信范围需求进行比较；若在通信范围需求内，且没有成功接收该数据包，则反馈NACK；不在通信范围需求内，不反馈NACK。
可选的，第一终端设备向第二终端设备发送第一信息，该第一信息用于请求获取时频资源信息，该第一消息包括第一终端设备的位置信息和/或第三终端设备的位置信息。该第一终端设备的位置信息和/或第三终端设备的位置信息可以承载于媒体接入控制层(medium access control，MAC)控制元素(control element，CE)中，该MAC CE中包括位置信息。可选的，该MAC CE可以包括该第一终端设备待发数据的优先级信息、时延信息、预留周期等参数中的一个或多个。可选的，该第一终端设备的位置信息和/或第三终端设备的位置信息可以承载于第一级SCI中，该第一级SCI可以包括该第一终端设备待发数据的优先级信息、时延信息、预留周期等参数中的一个或多个。
若第一终端设备向第二终端设备发送的第一消息包括第三终端设备的位置信息，则在第一终端设备向第二终端设备发送该第一消息之前，可选的，第一终端设备可以向第三终端设备发送位置信息请求消息，以获取该第三终端设备的位置信息。位置信息请求消息可以通过SCI中的字段来指示。可选的，第一终端设备接收第三终端设备发送的该第三终端设备的位置信息。第三终端设备发送给第一终端设备的位置信息可以承载于上述第一级SCI、第二级SCI或MAC CE任一信息中。应理解，第一终端设备的位置信息对于该第一终端设备来说是可知的。
第一终端设备获取第三终端设备的位置信息可以是基于位置信息请求消息触发的，也可以是第一终端设备与第三终端设备在通信过程中获取到的。
320，第二终端设备确定向第一终端设备发送该时频资源信息，该时频资源信息包括 可用的时频资源信息或者不可用的时频资源信息。
具体而言，第二终端设备可以根据位置信息确定向第一终端设备发送时频资源信息。
在一种实现方式中，第二终端设备可以根据第一终端设备的位置信息，确定第二终端设备与第一终端设备之间的第一距离，并根据第一距离确定向第一终端设备发送时频资源信息。
具体而言，可选的，若该第一距离大于第一阈值，则第二终端设备确定向第一终端设备发送时频资源信息。
可选的，若第一终端设备发送的用于请求时频资源信息的第一消息中不包括第一终端设备的位置信息和第三终端设备的位置信息，则第二终端设备收到该第一消息后，可以不给第一终端设备提供时频资源信息。
可选的，第二终端设备确定是否向第一终端设备发送该时频资源信息，该时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
应理解，可用的时频资源信息包括第二终端设备检测到的未被其他UE占用的资源池中的时频资源，或者第二终端设备检测到的RSRP测量值低于一个阈值对应的时频资源。不可用的时频资源包括第二终端设备检测到的已被其他UE占用的且RSRP测量值高于一个阈值的时频资源。这里的RSRP测量也可以是RSSI测量，SINR测量等信号强度测量或能量强度测量。本发明不限定终端设备确定可用的时频资源或不可用的时频资源的方法。
具体而言，第二终端设备可以根据位置信息确定是否向第一终端设备发送时频资源信息。这里也可以理解为，第二终端设备可以根据位置信息确定向第一终端设备发送时频资源信息。或者，第二终端设备可以根据位置信息确定不向第一终端设备发送时频资源信息。
在一种实现方式中，第二终端设备可以根据第一终端设备的位置信息，确定第二终端设备与第一终端设备之间的第一距离，并根据第一距离确定是否向第一终端设备发送时频资源信息。具体而言，若该第一距离大于第一阈值，则第二终端设备确定向第一终端设备发送时频资源信息；若该第一距离小于或等于第一阈值，则第二终端设备确定不向第一终端设备发送时频资源信息。第一终端设备的位置信息可以为zone ID或zone信息，第二终端设备与第一终端设备之间的第一距离可以为该第二终端设备自身的位置与该zone ID字段指示的最近的zone的中心位置的距离。
应理解，第一终端设备也可以使用自身确定的时频资源信息向目标终端设备发送数据。例如，第一终端设备使用感知或部分感知的资源选择方式确定的时频资源，第一终端设备使用该时频资源向目标终端设备发送数据。第一终端设备与第二终端设备之间的距离越近，信道环境越相似，在信道环境相似的情况下，第一终端设备与第二终端设备使用感知或部分感知的方式确定的时频资源的结果相似度越高。此时，若第二终端设备给第一终端设备提供时频资源信息，则该时频资源信息对于第一终端设备来说，其使用价值是很低的或者是没有意义的，即对于数据传输的可靠性而言，第二终端设备提供的时频资源信息并不能提高第一终端设备数据传输的可靠性。除此之外，第二终端设备给第一终端设备发送时频资源信息还引入了额外的信令交互，影响通信系统的运行效率。因此，在第一终端设备与第二终端设备之间的距离大于第一阈值的情况下，第二终端设备才有必要给第一终端设备提供时频资源信息。第一终端设备与第二终端设备之间的距离等于或小于第一阈值的情况下，第二终端设备不给第一终端设备提供时频资源信息，不仅可以避免额外的信令 交互，还可以提高通信系统的运行效率。
可选的，若第一终端设备发送的用于请求时频资源信息的第一消息中不包括第一终端设备的位置信息，则第二终端设备收到该第一消息后，可以不根据第一终端设备的距离判断是否向第一终端设备提供时频资源信息，也可以不给第一终端设备提供时频资源信息。具体而言，若第一消息中不包括第一终端设备的位置信息，即zone ID字段全部置0，或者在第一级SCI或第二级SCI中用1比特指示，或者通过其他方式指示，例如，RRC指示、MAC指示、系统信息块(system information block，SIB)指示或主信息块(master information block，MIB)指示。
在另一种实现方式中，第二终端设备可以根据第三终端设备的位置信息，确定第二终端设备与第三终端设备之间的第二距离，并根据第二距离确定向第一终端设备发送时频资源信息。
具体而言，可选的，若该第二距离小于第二阈值，则第二终端设备确定向第一终端设备发送该第二终端设备确定的时频资源信息。
可选的，若第一终端设备发送的用于请求时频资源信息的第一消息中不包括第一终端设备的位置信息和第三终端设备的位置信息，则第二终端设备收到该第一消息后，可以不给第一终端设备提供时频资源信息。
在另一种实现方式中，第二终端设备可以根据第三终端设备的位置信息，确定第二终端设备与第三终端设备之间的第二距离，并根据第二距离确定是否向第一终端设备发送时频资源信息。这里根据第二距离确定是否向第一终端设备发送时频资源信息可以理解为，根据第二距离确定向第一终端设备发送时频资源信息，或者，根据第二距离确定不向第一终端设备发送时频资源信息。具体而言，若该第二距离小于第二阈值，则第二终端设备确定向第一终端设备发送该第二终端设备确定的时频资源信息；若该第二距离大于或等于第二阈值，则第二终端设备确定不向第一终端设备发送该第二终端设备确定的时频资源信息。第三终端设备的位置信息可以通过zone ID字段来指示，第二终端设备与第三终端设备之间的第二距离可以为该第二终端设备自身的位置与该zone ID字段指示的最近的zone的中心位置的距离。
应理解，第一终端设备需要根据从第二终端设备获取到的时频资源信息向第三终端设备发送数据。第二终端设备距离第三终端设备越近，两者的信道环境越相似。在第二终端设备距离第三终端设备较近的情况下，第二终端设备确定的时频资源信息与第三终端设备的资源情况才比较接近，此时第二终端设备给第一终端设备提供的时频资源信息对第一终端设备来说是有价值的。若第二终端设备距离第三终端设备较远，则第二终端设备提供给第一终端设备的时频资源信息与第三终端设备的资源情况差异较大，此时第二终端设备提供的时频资源信息对第一终端设备来说是没有意义的，且还会引入额外的信令交互，影响通信系统的运行效率。因此，在第二终端设备与第三终端设备之间的距离小于第二阈值的情况下，第二终端设备才有必要给第一终端设备提供时频资源信息，并且这个条件下提供的时频资源信息对第一终端设备来说有用，可以带来很大的增益，提高第一终端设备数据传输的可靠性。本申请实施例中终端设备确定时频资源信息可以理解为终端设备自身检测到的时频资源信息或者通过其他方式获取到的时频资源信息。
可选的，若第一终端设备发送的用于请求时频资源信息的第一消息中不包括第三终端 设备的位置信息，则第二终端设备收到该第一消息后，可以不根据第三终端设备的距离判断是否向第一终端设备提供时频资源信息，也可以不给第一终端设备提供时频资源信息。具体而言，若第一消息中不包括第三终端设备的位置信息，即zone ID字段全部置0，或者在第一级SCI或第二级SCI中用1比特指示，或者通过其他方式指示，例如，RRC指示、MAC指示、SIB指示或MIB指示。
在另一种实现方式中，第二终端设备可以根据第一终端设备的位置信息和第三终端设备的位置信息，确定第二终端设备与第一终端设备之间的第一距离、第二终端设备与第三终端设备之间的第二距离，并根据第一距离和第二距离确定向第一终端设备发送时频资源信息。
具体而言，可选的，若第一距离大于第一阈值且第二距离小于第二阈值，则第二终端设备确定向第一终端设备发送时频资源信息；
可选的，若第一终端设备发送的用于请求时频资源信息的第一消息中不包括第一终端设备的位置信息和第三终端设备的位置信息，则第二终端设备收到该第一消息后，可以不给第一终端设备提供时频资源信息。
在另一种实现方式中，第二终端设备可以根据第一终端设备的位置信息和第三终端设备的位置信息，确定第二终端设备与第一终端设备之间的第一距离、第二终端设备与第三终端设备之间的第二距离，并根据第一距离和第二距离确定是否向第一终端设备发送时频资源信息。
具体而言，可选的，若第一距离大于第一阈值且第二距离小于第二阈值，则第二终端设备确定向第一终端设备发送时频资源信息；若第一距离小于或等于第一阈值，或者第二距离大于或等于第二阈值，则第二终端设备确定不向第一终端设备发送时频资源信息。
可选的，若第一终端设备发送的用于请求时频资源信息的第一消息中不包括第一终端设备的位置信息和第三终端设备的位置信息，则第二终端设备收到该第一消息后，可以不根据距离判断是否向第一终端设备提供时频资源信息，也可以不给第一终端设备提供时频资源信息。
第一阈值、第二阈值是由基站的无线资源控制(radio resource control，RRC)信令配置在资源池中的。也可以是由MAC层，MAC CE，SIB或MIB消息配置的，也可以是由第一终端设备通过PC5RRC配置的，也可以配置在资源池上。应理解，本申请实施例对第一阈值、第二阈值的大小不做任何限定。
在本申请实施例提供的技术方案中，第二终端设备可以根据其与第一终端设备之间的距离和/或与第三终端设备之间的距离，确定向第一终端设备提供时频资源信息，或者，确定是否向第一终端设备提供时频资源信息，可以确保提供的时频资源信息对第一终端设备来说具有参考价值，使第一终端设备选取可用的时频资源向第三终端设备发送数据，从而可以提高数据传输的可靠性。
若第二终端设备提供时频资源信息，则第一终端设备可以根据接收的来自第二终端设备的时频资源信息确定目标时频资源，该目标时频资源是资源池中可用的时频资源，第一终端设备使用该目标时频资源传输数据。
具体而言，可选的，第一终端设备可以根据自身检测的时频资源信息以及第二终端设备发送的时频资源信息确定该目标时频资源。可选的，第一终端设备可以仅根据第二终端 设备发送的时频资源信息确定该目标时频资源。该自身检测的时频资源信息可以理解为自身通过感知或部分感知或随机选择的资源选择方式确定的时频资源信息。
应理解，第一终端设备也可以向第三终端设备请求获取时频资源信息，而本申请实施例中适用于第三终端设备不提供时频资源信息的应用场景。
本申请实施例提出了另一种确定资源的方法，如图5所示，出示了本申请实施例的另一种确定时频资源的方法500的示意性流程图，该方法500包括：
510，第一终端设备获取第二终端设备的位置信息和/或第三终端设备的位置信息，其中，第三终端设备为第一终端设备需要传输数据的目标终端设备。
第一终端设备可以向第二终端设备发送位置信息请求消息，以获取第二终端设备的位置信息；第一终端设备也可以向第三终端设备发送位置信息请求消息，以获取第三终端设备的位置信息。
第二终端设备接收到第一终端设备发送的位置信息请求消息之后，可以向该第一终端设备发送该第二终端设备的位置信息，第一终端设备接收第二终端设备发送的该第二终端设备位置信息。
第三终端设备接收到第一终端设备发送的位置信息请求消息之后，可以向该第一终端设备发送该第三终端设备的位置信息，第一终端设备接收第三终端设备发送的该第三终端设备位置信息。
可选的，第一终端设备也可以通过组播反馈获取第二终端设备的位置信息和/或第三终端设备的位置信息。
可选的，第一终端设备可以在过往通信过程中获取第二终端设备的位置信息和/或第三终端设备的位置信息。
520，第一终端设备确定向所述第二终端设备发送第一消息，该第一消息用于获取时频资源信息，时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
具体而言，第一终端设备可以根据位置信息确定向第二终端设备发送第一消息。
在一种实现方式中，第一终端设备根据第二终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离，并根据第一距离确定向第二终端设备发送第一消息。具体而言，若第一距离大于第三阈值，则第一终端设备确定向第二终端设备发送第一消息。
具体而言，第一终端设备可以根据位置信息确定是否向所述第二终端设备发送第一消息，该第一消息用于获取时频资源信息，时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
具体而言，第一终端设备可以根据位置信息确定是否向第二终端设备发送第一消息。
在一种实现方式中，第一终端设备根据第二终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离，并根据第一距离确定是否向第二终端设备发送第一消息。具体而言，若第一距离大于第三阈值，则第一终端设备确定向第二终端设备发送第一消息；若第一距离小于或等于第三阈值，则第一终端设备确定不向第二终端设备发送第一消息。
应理解，第一终端设备也可以通过自身确定时频资源信息。该确定时频资源信息可以理解为自身通过感知或部分感知或随机选择的资源选择方式确定的时频资源信息。
第一终端设备与第二终端设备之间的距离越近，信道环境越相似，在信道环境相似的情况下，第一终端设备与第二终端设备检测到的时频资源的结果相似度越高，此时，若第一终端设备向第二终端设备发送用于获取第二终端设备确定的时频资源信息的第一消息，则第二终端设备提供给第一终端设备的时频资源信息对于第一终端设备来说，其使用价值是很低的或者是没有意义的，除此之外，第一终端设备向第二终端设备发送第一消息、或者第二终端设备给第一终端设备发送时频资源信息时还引入了额外的信令交互，影响通信系统的运行效率。因此，在第一终端设备与第二终端设备之间的距离大于第三阈值的情况下，才有必要向第二终端设备发送第一消息。
在另一种实现方式中，第一终端设备根据第二终端设备的位置信息和第三终端设备的位置信息，确定第二终端设备与第三终端设备之间的第二距离，并根据第二距离确定向第二终端设备发送第一消息。具体而言，若第二距离小于第四阈值，则第一终端设备确定向第二终端设备发送第一消息。
其中，第二终端设备可以是除第一终端设备和第三终端设备之外的任一终端设备，也可以是除第一终端设备和第三终端设备之外的至少一个第四终端设备中距离第三终端设备最近的终端设备。
在另一种实现方式中，第一终端设备根据第二终端设备的位置信息和第三终端设备的位置信息，确定第二终端设备与第三终端设备之间的第二距离，并根据第二距离确定是否向第二终端设备发送第一消息。具体而言，若第二距离小于第四阈值，则第一终端设备确定向第二终端设备发送第一消息；若第一距离大于或等于第四阈值，则第一终端设备确定不向第二终端设备发送第一消息。
其中，第二终端设备可以是除第一终端设备和第三终端设备之外的任一终端设备，也可以是除第一终端设备和第三终端设备之外的至少一个第四终端设备中距离第三终端设备最近的终端设备。
应理解，第一终端设备需要根据从第二终端设备获取到的时频资源信息向第三终端设备发送数据。第二终端设备距离第三终端设备越近，两者的信道环境越相似。在第二终端设备和第三终端设备的距离较近的情况下，第二终端设备确定的时频资源信息与第三终端设备的资源情况才比较接近，此时第一终端设备向第二终端设备发送第一消息，获取到的第二终端设备确定的时频资源信息对于第一终端设备来说是有价值的。第二终端设备距离第三终端设备较远的情况下，若第一终端设备从第二终端设备获取时频资源信息，则该时频资源信息与第三终端设备通过感知或部分感知的方式确定的资源情况差异较大，此时从第二终端设备获取到的时频资源信息对第一终端设备来说是价值很低或没有意义的，且还会引入额外的信令交互，影响通信系统的运行效率。因此，在第二终端设备与第三终端设备之间的距离小于第四阈值的情况下，第一终端设备才有必要向第二终端设备发送用于获取时频资源信息的第一消息。
在另一种实现方式中，第一终端设备根据第二终端设备的位置信息和第三终端设备的位置信息，确定第一终端设备与第二终端设备之间的第一距离、第二终端设备与第三终端设备之间的第二距离，并根据第一距离和第二距离确定向第二终端设备发送第一消息。具体而言，若第一距离大于第三阈值且第二距离小于第四阈值，则第一终端设备确定向第二终端设备发送所述第一消息；
若第二终端设备的位置信息和/或第三终端设备的位置信息无法获知，则第一终端设备可以不向第一终端设备发送用于获取时频资源信息的第一消息。
在另一种实现方式中，第一终端设备根据第二终端设备的位置信息和第三终端设备的位置信息，确定第一终端设备与第二终端设备之间的第一距离、第二终端设备与第三终端设备之间的第二距离，并根据第一距离和第二距离确定是否向第二终端设备发送第一消息。具体而言，若第一距离大于第三阈值且第二距离小于第四阈值，则第一终端设备确定向第二终端设备发送所述第一消息；若第一距离小于或等于第三阈值且第二距离大于或等于第四阈值，则第一终端设备确定不向第二终端设备发送第一消息。
若第二终端设备的位置信息和/或第三终端设备的位置信息无法获知，则第一终端设备可以不向第一终端设备发送用于获取时频资源信息的第一消息。
在本申请实施例提供的技术方案中，第一终端设备根据其与第二终端设备之间的距离和/或与第三终端设备之间的距离，确定向第二终端设备请求获取时频资源信息，或者，确定是否向第二终端设备请求获取时频资源信息，可以确保获取到的时频资源信息对第一终端设备来说具有参考价值，使第一终端设备选取可用的时频资源向第三终端设备发送数据，从而可以提高数据传输的可靠性。
本申请实施例提出了另一种确定资源的方法，如图6所示，出示了本申请实施例的另一种确定时频资源的方法600的示意性流程图，该方法600包括：
610，第二终端设备接收来自至少一个第一终端设备的至少一个第二消息，该第二消息用于获取时频资源信息，其中，第二消息中包括第一终端设备待发数据的优先级信息、时延信息、播类型信息、信道质量信息、节能信息中的至少一种。
可选的，其中，至少一个第一终端设备为需要向第三终端设备传输数据的终端设备。
应理解，第二终端设备接收来自第一终端设备的第二消息，其中第一终端设备不止一个，在第二终端设备接收来自至少一个第一终端设备的至少一个第二消息之前，至少一个第一终端设备确定需要向第三终端设备传输数据，则需要确定可用的时频资源，第一终端设备向第二终端设备发送第二消息，用于获取时频资源信息，用来提高数据传输的可靠性或者减少功耗。
620，第二终端设备确定向所述第一终端设备发送时频资源信息，时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
具体而言，第二终端设备可以根据接收到的第二消息中的信息确定向第一终端设备发送时频资源信息。
具体而言，第二终端设备可以根据接收到的第二消息中的信息确定是否向第一终端设备发送时频资源信息。即第二终端设备可以根据接收到的第二消息中的信息确定向第一终端设备发送时频资源信息，或者第二终端设备可以根据接收到的第二消息中的信息确定不向第一终端设备发送时频资源信息。
具体而言，第二终端设备可以根据接收到的第二消息中的信息确定向第一终端设备发送时频资源信息的顺序。
可选的，第二终端设备根据第一终端设备待发数据的优先级信息，确定向所述第一终端设备发送时频资源信息。若多个第一终端设备向第二终端设备请求获取时频资源信息，第二终端设备可以根据不同第一终端设备待发数据的优先级确定向待发数据的优先级最 高的第一终端设备提供时频资源信息，若优先级越高则优先级的值越低，则若多个第一终端设备向第二终端设备请求获取时频资源信息，第二终端设备可以根据不同第一终端设备待发数据的优先级值确定向待发数据的优先级值最低的第一终端设备提供时频资源信息。
可选的，第二终端设备根据第一终端设备待发数据的优先级信息，确定向所述第一终端设备发送时频资源信息。若多个第一终端设备向第二终端设备请求获取时频资源信息，第二终端设备可以按照优先级顺序向不同第一终端设备提供时频资源信息。若优先级越高则优先级的值越低，则按照优先级值的顺序向不同第一终端设备提供时频资源信息。例如，多个第一终端设备待发数据的优先级值分别为1,2,3,4，则第二终端设备确定向不同第一终端设备提供时频资源信息的顺序相应的优先级值为1,2,3,4。
可选的，第二终端设备根据第一终端设备待发数据的优先级信息，确定向所述第一终端设备发送时频资源信息。若只有一个第一终端设备向第二终端设备请求获取时频资源信息，则第二终端设备可以直接向该第一终端设备发送时频资源信息。可选的，第二终端设备根据第一终端设备待发数据的优先级信息，确定向所述第一终端设备发送时频资源信息。具体而言，第二终端设备可以确定向待发数据的优先级值低于第五阈值的第一终端设备发送时频资源信息。
可选的，第二终端设备可以根据时延信息，确定向第一终端设备发送时频资源信息。其中，时延信息是待发数据的时延要求信息，可以包括剩余包时延预算(packet delay budget，PDB)信息。若多个第一终端设备向第二终端设备请求获取时频资源信息，则第二终端设备可以根据时延要求确定向第一终端设备发送时频资源信息。若多个第一终端设备向第二终端设备请求获取时频资源信息，则第二终端设备可以优先向时延要求最短的第一终端设备发送时频资源信息。
可选的，第二终端设备可以根据时延信息，确定向第一终端设备发送时频资源信息。其中，时延信息是待发数据的时延要求信息，可以包括剩余包时延预算(packet delay budget，PDB)信息。具体而言，第二终端设备可以将多个第一终端设备发送的第二消息中的剩余PDB信息的长度进行排序，按照从短到长的顺序发送时频资源信息。例如，UEA、UEB和UEC都向第二终端设备请求获取时频资源，该三个UE发送的请求消息中剩余PDB分别为10ms，100ms和50ms，则第二终端设备为该三个UE提供时频资源信息的顺序为UEA，UEC和UEB。
可选的，第二终端设备可以根据时延信息，确定向第一终端设备发送时频资源信息。其中，时延信息是待发数据的时延要求信息，可以包括剩余包时延预算(packet delay budget，PDB)信息。第二终端设备可以确定向剩余PDB低于第六阈值的第一终端设备发送时频资源信息。
可选的，第二终端设备可以根据播类型信息，确定向第一终端设备发送时频资源信息。其中，播类型信息为第一终端设备发送用于请求获取时频资源信息的第二消息的播类型，包括组播和单播。若多个第一终端设备向第二终端设备请求获取时频资源信息，则第二终端设备可以优先向采用单播方式向第二终端设备发送第二消息的第一终端设备发送时频资源信息。应理解，若第一终端设备采用单播方式发送用于请求获取时频资源信息的第二消息，则接收到该消息的接收端(第二终端设备)只有一个，获得时频资源信息的概率低，及时为该第一终端设备发送时频资源信息，可以帮助该第一终端设备节省电量或者提高其 数据传输的可靠性。然而，若采用组播方式发送用于请求获取时频资源信息的第二消息，则接收到该消息的接收端有多个，能够获取到时频资源信息的概率大。
可选的，第二终端设备可以根据播类型信息，确定向第一终端设备发送时频资源信息。其中，播类型信息为第一终端设备发送用于请求获取时频资源信息的第二消息的播类型，包括组播和单播和广播。若多个第一终端设备向第二终端设备请求获取时频资源信息，则第二终端设备向发送第二消息的第一终端设备发送时频资源信息的第一优先顺序为单播，第二优先顺序为组播，第三优先级顺序为广播。若第一终端设备采用单播方式发送用于请求获取时频资源信息的第二消息，则接收到该消息的接收端(第二终端设备)只有一个，获得时频资源信息的概率相较于组播或广播更低，若采用组播方式发送用于请求获取时频资源信息的第二消息，则接收到该消息的接收端有多个，能够获取到时频资源信息的概率相较于单播大。若采用组播方式发送用于请求获取时频资源信息的第二消息，则接收到该消息的接收端有多个，能够获取到时频资源信息的概率相较于组播更大。
可选的，第二终端设备可以根据信道质量信息，确定向第一终端设备发送时频资源信息。其中，信道质量信息包括参考信号接收功率(reference signal received power，RSRP)信息、接收信号强度指示(received signal strength indicator，RSSI)信息、信噪比和干扰比(signal-to-noise and interference ratio，SINR)信息或信道状态信息(channel state information，CSI)中的至少一种。具体而言，第二终端设备可以向信道质量满足预设条件或者信道质量最好的第一终端设备发送时频资源信息。例如，第二终端设备可以选择RSRP/RSSI/SINR/CSI值最大的第一终端设备发送时频资源信息，即选择最稳定的链路为其提供时频资源信息。所述预设条件可以RSRP/RSSI/SINR/CSI值大于第七阈值。即选择稳定的链路为其提供时频资源信息。
可选的，第二终端设备可以根据节能信息，确定向第一终端设备发送时频资源信息。节能信息包括第一终端设备是否处于节能模式，节能的周期，节能的周期内激活期和休眠期等信息中的一个或多个。当第一消息中包括节能信息，第二终端设备优先为处于节能模式的终端设备提供时频资源信息。如果第二终端设备收到来自多个第一终端设备的多个节能信息，第二终端设备根据多个第一终端设备节能的周期的长度或者节能的周期内的激活期占比确定向不同第一终端设备提供时频资源信息的顺序。可选的，节能信息可以为非连续接收(Discontinuous Reception，DRX)信息，节能的周期可以为DRX周期。
或者第二终端设备确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备的节能的周期的长度最短，或者节能的周期内的激活期的占比最小。
这是因为处于节能模式的终端设备接收的时间有限，通过感知或部分感知的方式确定资源会增加资源冲突的概率或者增加系统干扰。因此对于节能模式中的终端设备而言，获取的时频资源更有价值，因为不仅提高数据传输的可靠性并且减少了系统干扰和资源冲突的概率。
可选的，若多个第一终端设备向第二终端设备请求获取时频资源信息，第二终端设备也可以根据第二消息中的待发数据的优先级信息、时延信息、播类型信息、信道质量信息中的一种或多种，确定N个第一终端设备为其提供时频资源信息。其中N的大小是可以是第二终端设备根据自身的能力确定的，即为一个UE能力参数，可以是网络设备配置或者预配置的，也可以是发送端(第一终端设备)配置或者预配置的，还可以是预定义的， 本申请实施例对此不做任何限定。
例如，第二终端设备可以根据剩余PDB信息和待发数据的优先级信息，确定向第一终端设备发送时频资源信息。具体而言，可以根据剩余PDB信息和待发数据的优先级信息的不同权重，确定向不同第一终端设备提供时频资源信息的顺序。
在本申请实施例提供的技术方案中，第二终端设备可以根据第一终端设备待发数据的优先级信息、时延信息、播类型信息、信道质量信息、节能信息中的至少一种，确定向第一终端设备发送时频资源信息，或者，确定向第一终端设备发送时频资源信息的顺序，可以确保第一终端设备使用可用的时频资源向第三终端设备发送数据，从而可以提高数据传输的可靠性。
本申请实施例提出了另一种确定资源的方法，如图7所示，出示了本申请实施例的另一种确定时频资源的方法700的示意性流程图，该方法700包括：
710，第一终端设备接收来自第二终端设备的时频资源信息，该时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。应理解，第二终端设备可以在没有接收到第一终端设备用于请求获取时频资源信息的消息的情况下，主动向第一终端设备发送时频资源信息。其中，第一终端设备需要使用可用的时频资源向第三终端设备传输数据。
720，第一终端设备确定使用该时频资源信息。可以理解为，第一终端设备确定使用该时频资源信息向第三终端设备发送数据。
具体而言，第一终端设备可以根据第二终端设备的位置信息和/或第三终端设备的位置信息确定使用该时频资源信息。该时频资源信息中可以包括第二终端设备的位置信息。第一终端设备可以获取第二终端设备的位置信息，并用于确定所述时频资源信息是否为可用的时频资源信息，进而保证数据传输的可靠性。
在一种实现方式中，第一终端设备可以根据第二终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离，并根据第一距离确定使用该时频资源信息。具体而言，若第一距离大于第八阈值，则第一终端设备确定使用该时频资源信息。当第一终端设备和第二终端设备的距离很近时，他们的信道环境相似度也很高，通过感知或部分感知的方式确定的时频资源的可靠性和干扰程度相似，相应的，所述时频资源信息对于第一终端设备来说价值不高。则第一终端设备不会使用。
可选的，第一终端设备接收来自多个第二终端设备的多个时频资源信息；所述时频资源信息中包括所述第二终端设备的位置信息。所述第一终端设备根据所述多个第二终端设备的位置信息，确定所述第一终端设备与所述多个第二终端设备之间的多个第一距离，在多个第一距离中确定大于第八阈值的所述第一距离，则所述第一终端设备确定使用第一距离大于第八阈值对应的第二终端设备发送的所述时频资源信息。
在一种实现方式中，第一终端设备可以根据第二终端设备的位置信息和第三终端设备的位置信息，确定第二终端设备与第三终端设备之间的第二距离，并根据第二距离确定使用该时频资源信息。具体而言，若第二距离小于第九阈值，则所述第一终端设备确定使用所述时频资源信息。当第三终端设备和第二终端设备的距离很近时，他们的信道环境相似度也很高，通过感知或部分感知的方式确定的时频资源的可靠性和干扰程度相似，相应的，所述时频资源信息对于第一终端设备来说价值很高。可以提高第一终端设备数据传输的可靠性。
可选的，第一终端设备接收来自多个第二终端设备的多个时频资源信息；所述时频资源信息中包括所述第二终端设备的位置信息。所述第一终端设备根据所述多个第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述多个第二终端设备与所述第三终端设备之间的多个第二距离；在多个第二距离中确定最小值，则所述第一终端设备确定使用所述最小值对应的第二终端设备发送的所述时频资源信息。
在另一种实现方式中，第一终端设备可以根据第二终端设备的位置信息和第三终端设备的位置信息，确定第一终端设备与第二终端设备之间的第一距离、确定第二终端设备与第三终端设备之间的第二距离，并根据第一距离和第二距离确定使用该时频资源信息。具体而言，若第一距离大于第八阈值且第二距离小于第九阈值，则第一终端设备确定使用所述时频资源信息。
具体而言，具体而言，第一终端设备可以根据第二终端设备的位置信息和/或第三终端设备的位置信息确定是否使用该时频资源信息。
在一种实现方式中，第一终端设备可以根据第二终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离，并根据第一距离确定是否使用该时频资源信息。具体而言，若第一距离大于第八阈值，则第一终端设备确定使用该时频资源信息；若第一距离小于或等于第八阈值，则第一终端设备确定不使用该时频资源信息。
应理解，第一终端设备也可以通过自身确定时频资源信息。该确定时频资源信息可以理解为自身通过感知或部分感知或随机选择的资源选择方式确定的时频资源信息。
第一终端设备与第二终端设备之间的距离越近，信道环境越相似，在信道环境相似的情况下，第一终端设备与第二终端设备检测到的时频资源的结果相似度越高，此时，第二终端设备发送的时频资源信息对第一终端设备来说，其使用价值是很低的或者是没有意义的。因此，在第一终端设备与第二终端设备之间的距离大于第八阈值的情况下，第一终端设备才使用第二终端设备发送的时频资源信息。
在一种实现方式中，第一终端设备可以根据第二终端设备的位置信息和第三终端设备的位置信息，确定第二终端设备与第三终端设备之间的第二距离，并根据第二距离确定是否使用该时频资源信息。具体而言，若第二距离小于第九阈值，则所述第一终端设备确定使用所述时频资源信息；若第二距离大于或等于第九阈值，则所述第一终端设备确定不使用所述时频资源信息。
应理解，第一终端设备需要向第三终端设备发送数据。第二终端设备距离第三终端设备越近，两者的信道环境越相似。在第二终端设备和第三终端设备的距离较近的情况下，第二终端设备确定的时频资源信息与第三终端设备的资源情况才比较接近，此时第二终端设备发送的时频资源信息对于第一终端设备来说是有价值的。第二终端设备距离第三终端设备较远的情况下，第二终端设备发送的时频资源信息与第三终端设备通过感知或部分感知的方式确定的资源情况差异较大，此时第二终端设备发送的时频资源信息对第一终端设备来说是价值很低或没有意义的。因此，在第二终端设备与第三终端设备之间的距离小于第九阈值的情况下，第一终端设备才使用第二终端设备发送的时频资源信息。
在另一种实现方式中，第一终端设备可以根据第二终端设备的位置信息和第三终端设备的位置信息，确定第一终端设备与第二终端设备之间的第一距离、确定第二终端设备与第三终端设备之间的第二距离，并根据第一距离和第二距离确定是否使用该时频资源信 息。具体而言，若第一距离大于第八阈值且第二距离小于第九阈值，则第一终端设备确定使用所述时频资源信息；若第一距离小于或等于第八阈值且第二距离大于或等于第九阈值，则第一终端设备确定不使用所述时频资源信息。
可选的，在第一终端设备确定使用所述时频资源信息之前，第一终端设备还可以向第三终端设备发送位置信息请求消息，以获取第三终端设备的位置信息；第三终端设备根据该位置信息请求消息向第一终端设备发送该第三终端设备的位置信息；第一终端设备接收第三终端设备发送的第三终端设备的位置信息。
可选的，第三终端设备的位置信息可以承载于以下信息的一个中：第一级侧行链路控制信息SCI、第二级侧行链路控制信息SCI或媒体接入控制层控制元素MAC CE。可选的，位置信息可以为区标识。
在本申请实施例提供的技术方案中，第一终端设备根据所述第二终端设备的位置信息和/或所述第三终端设备的位置信息确定使用所述时频资源信息。可以提高第一终端设备数据传输的可靠性。
应理解，本申请中提供的多种确定资源的方法可以分别使用，也可以结合起来使用，都覆盖在本申请实施例请求保护的范围内，本申请实施例对此不做任何限定。
本申请实施例提出了一种通信装置，如图8所示，出示了本申请实施例的一种通信装置800的示意性框图。该装置可以应用于本申请实施例中的第二终端设备。
该通信装800包括：收发单元810和确定单元820，收发单元810用于接收第一终端设备发送的第一消息，所述第一消息用于获取时频资源信息，所述第一消息中包括所述第一终端设备的位置信息和/或第三终端设备的位置信息，其中，所述第三终端设备为所述第一终端设备需要传输数据的目标终端设备；
确定单元820用于，确定向所述第一终端设备发送所述时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
可选的，确定单元820具体用于，根据所述位置信息确定向所述第一终端设备发送所述时频资源信息。
可选的，确定单元820具体用于，根据所述第一终端设备的位置信息，确定所述第二终端设备与所述第一终端设备之间的第一距离；若所述第一距离大于第一阈值，则确定向所述第一终端设备发送所述时频资源信息。
可选的，确定单元820具体用于，根据所述第三终端设备的位置信息，确定所述第二终端设备与所述第三终端设备之间的第二距离；若所述第二距离小于第二阈值，则确定向所述第一终端设备发送所述时频资源信息。
可选的，确定单元820具体用于，根据所述第一终端设备的位置信息和所述第三终端设备的位置信息，确定所述第二终端设备与所述第一终端设备之间的第一距离、所述第二终端设备与所述第三终端设备之间的第二距离；若所述第一距离大于第一阈值且所述第二距离小于第二阈值，则确定向所述第一终端设备发送所述时频资源信息。
可选的，所述第一终端设备的位置信息和/或所述第三终端设备的位置信息承载于以下信息的一个中：第一级侧行链路控制信息SCI、第二级侧行链路控制信息SCI或媒体接入控制层控制元素MAC CE。
可选的，所述位置信息包括区标识。
本申请实施例提出了一种通信装置，如图9所示，出示了本申请实施例的一种通信装置900的示意性框图。该装置可以应用于本申请实施例中的第一终端设备。
该通信装900包括：获取单元910和确定单元920，获取单元910用于获取第二终端设备的位置信息和/或第三终端设备的位置信息，其中，所述第三终端设备为所述第一终端设备需要传输数据的目标终端设备；
确定单元920用于，确定向所述第二终端设备发送第一消息，所述第一消息用于获取时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
可选的，确定单元920具体用于，根据所述位置信息确定向所述第二终端设备发送所述第一消息。
可选的，确定单元920具体用于，根据所述第二终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离；若所述第一距离大于第三阈值，则确定向所述第二终端设备发送所述第一消息。
可选的，确定单元920具体用于，根据所述第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述第二终端设备与所述第三终端设备之间的第二距离；若所述第二距离小于第四阈值，则确定向所述第二终端设备发送所述第一消息。
可选的，所述第二终端设备是至少一个第四终端设备中距离所述第三终端设备最近的终端设备。
可选的，确定单元920具体用于，根据所述第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离、确定所述第二终端设备与所述第三终端设备之间的第二距离；若所述第一距离大于第三阈值且所述第二距离小于第四阈值，则确定向所述第二终端设备发送所述第一消息。
可选的，获取单元910具体用于，向所述第二终端设备和/或所述第三终端设备发送位置信息请求消息；接收所述第二终端设备发送的所述第二终端设备的位置信息，和/或，接收所述第三终端设备发送的所述第三终端设备的位置信息。
可选的，所述第二终端设备的位置信息和/或所述第三终端设备的位置信息承载于以下信息的一个中：第一级侧行链路控制信息SCI、第二级侧行链路控制信息SCI或媒体接入控制层控制元素MAC CE。
可选的，所述位置信息包括区标识。
本申请实施例提出了一种通信装置，如图10所示，出示了本申请实施例的一种通信装置1000的示意性框图。该装置可以应用于本申请实施例中的第二终端设备。
该通信装1000包括：收发单元1010和确定单元1020，收发单元1010用于接收来自至少一个第一终端设备的至少一个第二消息，所述第二消息用于获取时频资源信息，所述第二消息中包括所述第一终端设备待发数据的优先级信息、时延信息、播类型信息、信道质量信息中的至少一种；
确定单元1020用于，确定向所述第一终端设备发送所述时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
可选的，确定单元1020具体用于，根据所述第二消息确定向所述第一终端设备发送所述时频资源信息。
可选的，确定单元1020具体用于，根据所述第一终端设备待发数据的优先级信息， 确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备待发数据的优先级值低于第五阈值。
可选的，确定单元1020具体用于，根据所述时延信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备的时延最短。
可选的，确定单元1020具体用于，根据所述播类型信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备发送的所述第二消息是以单播方式发送的。
可选的，确定单元1020具体用于，根据所述信道质量信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备的所述信道质量信息满足预设条件。
可选的，所述时延信息包括剩余包时延预算PDB信息。
可选的，所述信道质量信息包括：参考信号接收功率RSRP信息、接收信号强度指示RSSI信息、信噪比和干扰比SINR信息或信道状态信息CSI中的至少一种。
本申请实施例提供了一种通信设备1100，如图11所示，出示了本申请实施例的一种通信设备1000的示意性框图。
该设备1100包括：处理器1110和收发器1120，所述收发器1120用于接收计算机代码或指令，并传输至所述处理器1110，所述处理器1110运行所述计算机代码或指令，如本申请实施例中任意可能的实现方式中的方法。
上述的处理器1110可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
上述的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
应理解，上述存储器可以集成于处理器中，或者，上述处理器和存储器也可以集成在同一芯片上，也可以分别处于不同的芯片上并通过接口耦合的方式连接。本申请实施例对此不做限定。
本申请实施例提供了一种通信系统1200，包括本申请实施例提供的确定资源的方法中的第一终端设备1210、第二终端设备1220和第三终端设备1230。如图12所示，出示了本申请实施例的一种通信设备1200的示意性框图。
本申请实施例还提供了一种计算机可读存储介质，其上存储有用于实现上述方法实施例中的方法的计算机程序。当该计算机程序在计算机上运行时，使得该计算机可以实现上述方法实施例中的方法。
另外，本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系；本申请中术语“至少一个”，可以表示“一个”和“两个或两个以上”，例如，A、B和C中至少一个，可以表示：单独存在A，单独存在B，单独存在C、同时存在A和B，同时存在A和C，同时存在C和B，同时存在A和B和C，这七种情况。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案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中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机 存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种确定资源的方法，其特征在于，包括：
    第二终端设备接收第一终端设备发送的第一消息，所述第一消息用于获取时频资源信息，所述第一消息中包括所述第一终端设备的位置信息和/或第三终端设备的位置信息，其中，所述第三终端设备为所述第一终端设备需要传输数据的目标终端设备；
    所述第二终端设备确定向所述第一终端设备发送所述时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第二终端设备确定向所述第一终端设备发送所述时频资源信息，包括：
    所述第二终端设备根据所述位置信息确定向所述第一终端设备发送所述时频资源信息。
  3. 根据权利要求2所述的方法，其特征在于，所述第二终端设备根据所述位置信息确定向所述第一终端设备发送所述时频资源信息，包括：
    所述第二终端设备根据所述第一终端设备的位置信息，确定所述第二终端设备与所述第一终端设备之间的第一距离；
    若所述第一距离大于第一阈值，则所述第二终端设备确定向所述第一终端设备发送所述时频资源信息。
  4. 根据权利要求2所述的方法，其特征在于，所述第二终端设备根据所述位置信息确定向所述第一终端设备发送所述时频资源信息，包括：
    所述第二终端设备根据所述第三终端设备的位置信息，确定所述第二终端设备与所述第三终端设备之间的第二距离；
    若所述第二距离小于第二阈值，则所述第二终端设备确定向所述第一终端设备发送所述时频资源信息。
  5. 根据权利要求2所述的方法，其特征在于，所述第二终端设备根据所述位置信息确定向所述第一终端设备发送所述时频资源信息，包括：
    所述第二终端设备根据所述第一终端设备的位置信息和所述第三终端设备的位置信息，确定所述第二终端设备与所述第一终端设备之间的第一距离、所述第二终端设备与所述第三终端设备之间的第二距离；
    若所述第一距离大于第一阈值且所述第二距离小于第二阈值，则所述第二终端设备确定向所述第一终端设备发送所述时频资源信息。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述第一终端设备的位置信息和/或所述第三终端设备的位置信息承载于以下信息的一个中：
    第一级侧行链路控制信息SCI、第二级侧行链路控制信息SCI或媒体接入控制层控制元素MAC CE。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述位置信息包括区标识。
  8. 一种确定资源的方法，其特征在于，包括：
    第一终端设备获取第二终端设备的位置信息和/或第三终端设备的位置信息，其中，所述第三终端设备为所述第一终端设备需要传输数据的目标终端设备；
    所述第一终端设备确定向所述第二终端设备发送第一消息，所述第一消息用于获取时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
  9. 根据权利要求8所述的方法，其特征在于，所述第一终端设备确定向所述第二终端设备发送第一消息，包括：
    所述第一终端设备根据所述位置信息确定向所述第二终端设备发送所述第一消息。
  10. 根据权利要求9所述的方法，其特征在于，所述第一终端设备根据所述位置信息确定向所述第二终端设备发送所述第一消息，包括：
    所述第一终端设备根据所述第二终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离；
    若所述第一距离大于第三阈值，则所述第一终端设备确定向所述第二终端设备发送所述第一消息。
  11. 根据权利要求9所述的方法，其特征在于，所述第一终端设备根据所述位置信息确定向所述第二终端设备发送所述第一消息，包括：
    所述第一终端设备根据所述第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述第二终端设备与所述第三终端设备之间的第二距离；
    若所述第二距离小于第四阈值，则所述第一终端设备确定向所述第二终端设备发送所述第一消息。
  12. 根据权利11所述的方法，其特征在于，所述第二终端设备是至少一个第四终端设备中和所述第三终端设备的距离最近的终端设备。
  13. 根据权利要求9所述的方法，其特征在于，所述第一终端设备根据所述位置信息确定向所述第二终端设备发送所述第一消息，包括：
    所述第一终端设备根据所述第二终端设备的位置信息和所述第三终端设备的位置信息，确定所述第一终端设备与所述第二终端设备之间的第一距离、确定所述第二终端设备与所述第三终端设备之间的第二距离；
    若所述第一距离大于第三阈值且所述第二距离小于第四阈值，则所述第一终端设备确定向所述第二终端设备发送所述第一消息。
  14. 根据权利要求8至13中任一项所述的方法，其特征在于，所述第一终端设备获取第二终端设备的位置信息和/或第三终端设备的位置信息，包括：
    所述第一终端设备向所述第二终端设备和/或所述第三终端设备发送位置信息请求消息；
    所述第一终端设备接收所述第二终端设备发送的所述第二终端设备的位置信息，和/或，所述第一终端设备接收所述第三终端设备发送的所述第三终端设备的位置信息。
  15. 根据权利要求8至14中任一项所述的方法，其特征在于，所述第二终端设备的位置信息和/或所述第三终端设备的位置信息承载于以下信息的一个中：
    第一级侧行链路控制信息SCI、第二级侧行链路控制信息SCI或媒体接入控制层控制元素MAC CE。
  16. 根据权利要求8至15中任一项所述的方法，其特征在于，所述位置信息包括区 标识。
  17. 一种确定资源的方法，其特征在于，包括：
    第二终端设备接收来自至少一个第一终端设备的至少一个第二消息，所述第二消息用于获取时频资源信息，所述第二消息中包括所述第一终端设备待发数据的优先级信息、时延信息、播类型信息、信道质量信息中的至少一种；
    所述第二终端设备确定向所述第一终端设备发送所述时频资源信息，所述时频资源信息包括可用的时频资源信息或者不可用的时频资源信息。
  18. 根据权利要求17所述的方法，其特征在于，所述第二终端设备确定向所述第一终端设备发送所述时频资源信息，包括：
    所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息。
  19. 根据权利要求18所述的方法，其特征在于，所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息，包括：
    所述第二终端设备根据所述第一终端设备待发数据的优先级信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备待发数据的优先级值低于第五阈值。
  20. 根据权利要求18所述的方法，其特征在于，所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息，包括：
    所述第二终端设备根据所述时延信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备的时延最短。
  21. 根据权利要求18所述的方法，其特征在于，所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息，包括：
    所述第二终端设备根据所述播类型信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备发送的所述第二消息是以单播方式发送的。
  22. 根据权利要求18所述的方法，其特征在于，所述第二终端设备根据所述第二消息确定向所述第一终端设备发送所述时频资源信息，包括：
    所述第二终端设备根据所述信道质量信息，确定向所述第一终端设备发送所述时频资源信息，其中，所述第一终端设备的所述信道质量信息满足预设条件。
  23. 根据权利要求17或20所述的方法，其特征在于，所述时延信息包括剩余包时延预算PDB信息。
  24. 根据权利要求17或22所述的方法，其特征在于，所述信道质量信息包括：参考信号接收功率RSRP信息、接收信号强度指示RSSI信息、信噪比和干扰比SINR信息或信道状态信息CSI中的至少一种。
  25. 一种通信装置，其特征在于，包括用于实现如权利要求1至7中任一项所述的方法的功能的单元。
  26. 一种通信装置，其特征在于，包括用于实现如权利要求8至16中任一项所述的方法的功能的单元。
  27. 一种通信装置，其特征在于，包括用于实现如权利要求17至24中任一项所述的方法的功能的单元。
  28. 一种通信设备，其特征在于，包括：
    处理器和收发器，所述收发器用于接收计算机代码或指令，并传输至所述处理器，所述处理器运行所述计算机代码或指令，如权利要求1至24中任一项所述的方法。
  29. 一种通信系统，其特征在于，包括：
    权利要求1至24中任一项所述方法中的第一终端设备、第二终端设备和第三终端设备。
  30. 一种计算机可读存储介质，其特征在于，包括：
    所述计算机可读介质存储有计算机程序；
    所述计算机程序在计算机上运行时，使得计算机执行权利要求1至24中任一项所述的方法。
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