WO2022077376A1 - 资源选择和资源指示方法及装置 - Google Patents

资源选择和资源指示方法及装置 Download PDF

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Publication number
WO2022077376A1
WO2022077376A1 PCT/CN2020/121272 CN2020121272W WO2022077376A1 WO 2022077376 A1 WO2022077376 A1 WO 2022077376A1 CN 2020121272 W CN2020121272 W CN 2020121272W WO 2022077376 A1 WO2022077376 A1 WO 2022077376A1
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Prior art keywords
terminal device
resource
resources
time slot
resource set
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PCT/CN2020/121272
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English (en)
French (fr)
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纪鹏宇
张健
王昕�
张磊
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富士通株式会社
纪鹏宇
张健
王昕�
张磊
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Priority to PCT/CN2020/121272 priority Critical patent/WO2022077376A1/zh
Publication of WO2022077376A1 publication Critical patent/WO2022077376A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • the embodiments of the present application relate to the field of communication technologies.
  • Mode 1 In Rel-15 and previous versions of the Internet of Vehicles (V2X, Vehicle to Everything) communication, two allocation methods of side link (Sidelink) resources are supported: Mode 1 and Mode 2.
  • Mode 1 side link resources are allocated by network equipment (such as base stations) and obtained;
  • Mode 2 terminal equipment autonomously selects transmission resources, that is, transmission resources are obtained through sensing or detection-resource selection process.
  • New Radio (NR, New Radio) V2X is one of the research projects of Rel-16 standardization. Compared with Long Term Evolution (LTE, Long Term Evolution) V2X, NR V2X needs to support many new scenarios and new services ( For example, remote driving, autonomous driving and fleet driving, etc.), need to meet higher technical indicators (high reliability, low latency, high data rate, etc.).
  • LTE Long Term Evolution
  • NR V2X needs to support many new scenarios and new services ( For example, remote driving, autonomous driving and fleet driving, etc.), need to meet higher technical indicators (high reliability, low latency, high data rate, etc.).
  • the V2X terminal equipment may perform side link transmission in some time slots, so that the perception results of these time slots cannot be obtained. Or, since the V2X terminal device adopts a partial sensing scheme, the V2X terminal device may not perform resource sensing or monitoring (monitoring) in some time slots, so that the sensing results of these time slots cannot be obtained. This may lead to the exclusion of all candidate resources in the time slots with the possible reservation period interval from these time slots, resulting in excessive exclusion of resources and the terminal equipment having to select resources with greater interference for transmission, increasing the The probability of collision and the possibility of channel congestion will affect the system performance.
  • embodiments of the present application provide a resource selection and resource indication method and apparatus.
  • a resource selection method including:
  • the second terminal device determines the distance between the first terminal device and the second terminal device, or the position of the first terminal device, or the signal strength of the first terminal device;
  • the selection corresponding to the first time slot that the second terminal device does not monitor in the sensing time period is determined according to the distance or location, or the signal strength, or the resource set Whether candidate resources for the second slot in the time period are excluded.
  • a resource selection apparatus which is configured in a second terminal device, and the apparatus includes:
  • a determining unit which determines the distance between the first terminal device and the second terminal device, or the position of the first terminal device, or the signal strength of the first terminal device;
  • a receiving unit that receives the resource set from the first terminal device
  • a selection unit which, when performing resource selection or reselection, determines, according to the distance or position, or the signal strength, or the resource set, the first time slot that the second terminal device does not monitor in the sensing time period Whether the candidate resource of the second time slot in the corresponding selection time period is excluded.
  • a resource indication method including:
  • the first terminal device determines the distance between the first terminal device and the second terminal device, or the location of the second terminal, or the signal strength of the second terminal device;
  • the resource set is at least used by the second terminal device to determine the selection corresponding to the first time slot that is not monitored in the sensing time period Whether candidate resources for the second slot in the time period are excluded.
  • a resource indication apparatus which is configured in a first terminal device, and the apparatus includes:
  • a determining unit that determines the distance between the first terminal device and the second terminal device, or the position of the second terminal, or the signal strength of the second terminal device
  • a sending unit which sends a resource set to the second terminal device according to the distance or the position or the signal strength, where the resource set is at least used by the second terminal device to determine the unmonitored first time slot in the sensing time period Whether the candidate resource of the second time slot in the corresponding selection time period is excluded.
  • a communication system including:
  • a first terminal device which determines the distance between the first terminal device and the second terminal device, or the position of the second terminal, or the signal strength of the second terminal device; and according to the first terminal The distance between the device and the second terminal device or the position of the second terminal or the signal strength of the second terminal device sends a resource set to the second terminal device;
  • the second terminal device determines the distance between the first terminal device and the second terminal device, or the location of the first terminal device, or the signal strength of the first terminal device; the resource set of a terminal device; and when performing resource selection or reselection, according to the distance between the first terminal device and the second terminal device or the location of the first terminal device, or the The signal strength of the first terminal device, or the resource set, determines whether the candidate resource of the second time slot in the selected time period corresponding to the first time slot that the second terminal device does not monitor in the sensing time period is used. exclude.
  • One of the beneficial effects of the embodiments of the present application is that: when the second terminal device selects or reselection resources, according to the distance from the first terminal device or the location of the first terminal device, or the signal strength of the first terminal device, or The resource set from the first terminal device is used to determine whether the candidate resource of the second time slot in the selected time period corresponding to the first time slot that the second terminal device does not monitor in the sensing time period is excluded. In this way, excessive exclusion of resources can be avoided to a certain extent, and the probability of collision and the possibility of channel congestion can be reduced, thereby improving system performance.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a terminal device performing side link resource selection
  • Fig. 3 is a schematic diagram of the time slot corresponding to the unmonitored time slot being excluded;
  • FIG. 4 is a schematic diagram of a resource selection method according to an embodiment of the present application.
  • FIG. 5 is an example diagram of resource exclusion according to an embodiment of the present application.
  • FIG. 6 is another example diagram of performing resource exclusion according to an embodiment of the present application.
  • FIG. 7 is an example diagram of a candidate resource according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a resource indication method according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a resource selection apparatus according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a resource indicating device according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a network device according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terms “first”, “second”, etc. are used to distinguish different elements in terms of numelation, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be referred to by these terms restricted.
  • the term “and/or” includes any and all combinations of one or more of the associated listed items.
  • the terms “comprising”, “including”, “having”, etc. refer to the presence of stated features, elements, elements or components, but do not preclude the presence or addition of one or more other features, elements, elements or components.
  • the term “communication network” or “wireless communication network” may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Long Term Evolution Enhanced (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), high-speed message access (HSPA, High-Speed Packet Access) and so on.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Enhanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to communication protocols at any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G , New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device.
  • Network devices may include but are not limited to the following devices: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobility management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller) and so on.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include a remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low power node (eg femeto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low power node eg femeto, pico, etc.
  • base station may include some or all of their functions, each base station may provide communication coverage for a particular geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "User Equipment” (UE, User Equipment) or “Terminal Equipment” (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services.
  • a terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.
  • the terminal device may include but is not limited to the following devices: Cellular Phone (Cellular Phone), Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication device, handheld device, machine type communication device, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.
  • Cellular Phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem wireless communication device
  • handheld device machine type communication device
  • laptop computer Cordless phones, smartphones, smart watches, digital cameras, and more.
  • the terminal device may also be a machine or device that performs monitoring or measurement, such as but not limited to: Machine Type Communication (MTC, Machine Type Communication) terminals, Vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • network side refers to one side of the network, which may be a certain base station, and may also include one or more network devices as described above.
  • user side or “terminal side” or “terminal device side” refers to the side of a user or terminal, which may be a certain UE, or may include one or more terminal devices as above.
  • equipment may refer to network equipment or terminal equipment.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, which schematically illustrates the case of a terminal device and a network device as an example.
  • a communication system 100 may include a network device 101 and terminal devices 102 and 103 .
  • FIG. 1 only takes two terminal devices and one network device as an example for description, but the embodiment of the present application is not limited to this.
  • Enhanced Mobile Broadband eMBB, enhanced Mobile Broadband
  • Massive Machine Type Communication mMTC, massive Machine Type Communication
  • Ultra-Reliable and Low Latency Communication URLLC, Ultra-Reliable and Low.
  • -Latency Communication etc.
  • FIG. 1 shows that both terminal devices 102 and 103 are within the coverage of the network device 101, but the present application is not limited to this. Both terminal devices 102 , 103 may not be within the coverage of the network device 101 , or one terminal device 102 may be within the coverage of the network device 101 and the other end device 103 may be outside the coverage of the network device 101 .
  • side link transmission may be performed between the two terminal devices 102 and 103 .
  • the two terminal devices 102 and 103 can both perform side link transmission within the coverage of the network device 101 to implement V2X communication, or both can perform side link transmission outside the coverage of the network device 101 to implement V2X
  • one terminal device 102 is within the coverage of the network device 101 and another terminal device 103 is outside the coverage of the network device 101 to perform side link transmission to implement V2X communication.
  • the terminal devices 102 and/or 103 can autonomously select side link resources (ie, adopt Mode 2), and in this case, the side link transmission can be independent of the network device 101, that is, the network device 101 is optional of.
  • the embodiment of the present application may also combine the autonomous selection of side link resources (that is, using Mode 2) and the allocation of side link resources by the network device (that is, using Mode 1); the embodiment of the present application does not limit this.
  • terminal equipment can obtain side link transmission resources through the process of sensing detection + resource selection, in which sensing can be continuously performed to obtain the occupancy of resources in the resource pool. For example, the terminal device can estimate the resource occupancy in a later period of time (called a selection window) according to the resource occupancy in a previous period of time (called a perception window).
  • a selection window the resource occupancy in a later period of time
  • a perception window the resource occupancy in a previous period of time
  • FIG 2 is a schematic diagram of a terminal device performing side link resource selection.
  • the terminal device passes the (n-1000)th to (n-1)th subframes or time slots (that is, the sensing window, sensing window). ) in the side link control information (SCI, Sidelink Control Information) and the detection of time-frequency resource reference signals at different locations, the resource occupancy situation of the perception window can be obtained, and then the (n+T1) to ( resource occupancy of n+T2) subframes or time slots (ie selection window, selection window).
  • SCI Sidelink Control Information
  • the physical layer of the terminal device obtains the granularity R x,y of resource selection from a higher layer (eg, a medium access control (MAC, Media Access Control) layer); the granularity may represent a subframe A series of consecutive sub-channels within the sub-channel, each sub-channel includes more than one consecutive Physical Resource Block (PRB, Physical Resource Block), the number of PRBs can be determined by the resource pool, and the resource pool is configured or pre-configured by network devices (such as base stations).
  • Configuration; the set of resources of size R x,y in all subframes in the entire selection window (hereinafter referred to as Rx ,y candidate resources) is initially defined as Set A.
  • the terminal device may exclude some of the candidate resources in Set A according to the detection result within the sensing window before the data to be sent arrives. For example, in Rel-16's NR V2X, the following R x,y candidate resources need to be excluded:
  • DMRS Demodulation Reference Signal
  • PSSCH Physical Sidelink Shared Channel
  • RSRP Reference Signal Receiving Power
  • Th(prio RX ) takes the value corresponding to The high layer parameter ThresRSRP_pi_pj
  • p j is the priority of the data to be sent by the current UE indicated by the high layer
  • p i is the detected priority of other UEs indicated in the SCI;
  • the resources here refer to the candidate resources of set A in the current selection window, and the resources at the periodic positions that may be reserved in the subsequent cycles of the periodic service.
  • the number of R x,y candidate resources remaining in Set A is less than X% (for example, 20%) of the initial total, then increase the RSRP threshold by 3dB, from the initial Set Re-exclude in A until the number of R x,y candidate resources remaining in Set A is greater than or equal to 20% of the initial total.
  • the physical layer of the terminal device can report Set B to the MAC layer, and the MAC layer randomly selects in Set B and selects a candidate resource for data transmission.
  • MCS demodulation and coding scheme
  • Figure 3 is a schematic diagram of the time slot corresponding to the unmonitored slot being excluded.
  • UE B does not monitor the time slot 301 of the sensing window ( Or referred to as detection or perception), all the candidate resources in the time slots 302 and 303 in the selection window corresponding to the time slot 301 (including the candidate resources overlapping with P0 and P1) are excluded.
  • NR V2X supports more candidate period values than LTE V2X, for example, most of them are short period Ps less than P (for example, less than or equal to 100ms), and only need to exclude all of 1 timeslot each time compared to long period Candidate resources, short cycle needs to be excluded each time All candidate resources in a slot. Therefore, due to the exclusion of resources caused by unmonitored time slots, there may be far more resources in NR V2X than in LTE V2X, which may lead to excessive exclusion of resources and make the terminal device have to select resources with greater interference for transmission, which increases collisions. The probability, and the likelihood that a channel congestion situation will arise, affects system performance.
  • the side link is described by taking V2X as an example, but the present application is not limited to this, and can also be applied to a side link transmission scenario other than V2X.
  • the terms “side link” and “V2X” are interchangeable, the terms “PSFCH” and “side link feedback channel” are interchangeable, and the terms “PSCCH” and “ “Sidelink Control Channel” or “Sidelink Control Information” are interchangeable, as are the terms “PSSCH” and “Sidelink Data Channel” or “Sidelink Data”.
  • transmitting or receiving PSCCH can be understood as sending or receiving side link control information carried by PSCCH; sending or receiving PSSCH can be understood as sending or receiving side link data carried by PSSCH; sending or receiving PSFCH can be understood as sending or receiving side link feedback information carried by PSFCH.
  • Sidelink transmission also called sidelink transmission
  • PSCCH/PSSCH transmission or sidelink data/information transmission can be understood as PSCCH/PSSCH transmission or sidelink data/information transmission.
  • the embodiment of the present application provides a resource selection method, which is described from the second terminal device.
  • the second terminal device may send side link data to the first terminal device, so the second terminal device needs to perform resource selection to determine a resource for sending side link data.
  • the second terminal device in this embodiment of the present application is a transmitting device
  • the first terminal device is a receiving device.
  • the first terminal device may send a resource set (which may also be referred to as resource information) to the second terminal device.
  • the resource set may indicate the side link resource itself, or may indicate information related to the side link resource, such as priority, RSRP measurement result, and the like.
  • resource set and “side information” or “resource information” are interchangeable without causing confusion.
  • FIG. 4 is a schematic diagram of a resource selection method according to an embodiment of the present application. As shown in FIG. 4 , the method includes:
  • the second terminal device determines the distance between the first terminal device and the second terminal device, or the location of the first terminal device, or the signal strength (RSRP) of the first terminal device;
  • the second terminal device receives the resource set from the first terminal device.
  • the second terminal device determines, according to the distance or location, or the signal strength, or the resource set, the information that the second terminal device does not monitor during the sensing time period. Whether the candidate resource of the second time slot in the selected time period corresponding to the first time slot is excluded.
  • the unmonitored first time slot (for example, the time slot 301 shown in FIG. 3 ) in the sensing time period (sensing window) corresponds to one or more second time slots in the selection time period (selection window).
  • time slots eg, time slots 302 and 303 shown in Figure 3).
  • an unmonitored first time slot is m
  • the corresponding second time slot is m+q*P' rsvp_RX
  • P' rsvp_RX is the corresponding time slot after P rsvp_RX is converted to a logical slot (logical slot) , described in the following formula (1); wherein P rsvp_RX is one of all possible periods indicated in the sl-ResourceReservePeriodList configured in the resource pool.
  • n is the time slot for triggering resource selection; T scal is set to be converted into the size of the selection window T 2 in milliseconds; Expressed as a short-cycle business; Represents the time domain resources in the resource pool.
  • the terminal device may perform side link resource selection or reselection, which is called (re-)selection.
  • the resource reselection may be triggered by the result of resource re-evaluation or preemption detection performed by the terminal device, and "resource selection or reselection" may also be referred to as “resource selection/resource reselection/resource re-evaluation/preemption detection”.
  • resource selection/resource reselection/resource re-evaluation/preemption detection For the specific content of resource selection/resource reselection/resource re-evaluation/preemption detection, reference may be made to related technologies, which will not be repeated here.
  • the second terminal device may determine whether the distance between the first terminal device and the second terminal device is less than or equal to a threshold value, or whether the first terminal device and the second terminal device are located in the same area or adjacent area. The following is a schematic description of how to determine the distance or position.
  • the second terminal device determines whether the distance between the first terminal device and the second terminal device is less than or Equal to the first threshold value, or determine whether the first terminal device and the second terminal device are located in the same area or adjacent areas.
  • the second terminal device decodes the side link control information (SCI), if the location information or area identifier of the first terminal device is indicated in it; In the case where the distance between the center position of the nearest zone indicated by the location information or the zone identifier (Zone_id) is less than or equal to the predetermined distance or the communication range requirement in the side link control information, determine the first terminal device and the second terminal device. The distance between the terminal devices is less than or equal to the first threshold value.
  • SCI side link control information
  • the second terminal device can directly calculate the first terminal device. The distance between the terminal device and the second terminal device.
  • SCI side link control information
  • the second terminal device may associate its own area identifier with the SCI in the side link control information.
  • the zone identifiers are compared; in the case that the own zone identifier is the same as or similar to the zone indicated by the zone identifier (for example, the zone index or the Zone_id) in the side link control information, determine the first terminal device and the first terminal device.
  • the two terminal devices are located in the same area or adjacent areas.
  • the second terminal device determines whether the distance between the first terminal device and the second terminal device is less than or equal to the first threshold value according to the location information or the area identifier in the resource set (assistance information) , or determine whether the first terminal device and the second terminal device are located in the same area or adjacent areas.
  • the distance between the second terminal device's own location and the location information in the resource set or the center location of the nearest zone indicated by the zone identifier (Zone_id) is less than or equal to a predetermined distance or the side link control If the communication range in the information is required, it is determined that the distance between the first terminal device and the second terminal device is less than or equal to the first threshold value.
  • the resource set indicates the location information of the first terminal device, where the location information is x,y coordinates, and the second terminal device can directly calculate the distance between the first terminal device and the second terminal device.
  • the second terminal device determines that the first terminal device and the second terminal device are located in the same area when the area identifier of the second terminal device is the same as or similar to the area indicated by the area identifier (for example, the area index or the Zone_id) in the resource set. area or adjacent area.
  • the area identifier for example, the area index or the Zone_id
  • the resource set includes the resources of the second time slot or the corresponding reservation information, according to whether the distance between the first terminal device and the second terminal device is less than or equal to the first A threshold value or whether the first terminal device and the second terminal device are located in the same area or adjacent area to determine whether the candidate resource of the second time slot is excluded.
  • the reservation information corresponding to the second time slot is the indication information that the resources in the second time slot are reserved, and the indication information is sensed by, for example, the first time slot in the sensing window of the second terminal device by the first terminal device
  • the received side link control information indicates that the side link control information is not perceived by the second terminal device due to the transmission of the second terminal or the power saving operation.
  • SCI side link control information
  • the second terminal device when the distance between the first terminal device and the second terminal device is less than or equal to the first threshold value, or the first terminal device and the second terminal device are located in the same area or adjacent areas, and the resource set In the case that the resources of the second time slot or the corresponding reservation information are included in the (auxiliary information), the second terminal device does not exclude all the candidate resources of the second time slot (for example, skip the resources that exclude the second time slot). step of all candidate resources), and perform resource exclusion for the candidate resources of the second time slot according to the resource set (assistance information).
  • UE A's actual perception result may be exactly the same as UE B.
  • UE A may perform detection, if UE A reports the detection result of this part of the time slot to UE B, it is equivalent to UE A replacing UE B for detection, which is equivalent to The detection results of UE B are supplemented, so that the candidate resource set of UE B is increased, which is beneficial to increase resource utilization and reduce collision probability.
  • FIG. 5 is an example diagram of resource exclusion according to an embodiment of the present application.
  • UE A and UE B are in the same area.
  • UE B selects or reselection resources, for the unmonitored time slot 301 corresponding to the For time slots 302 and 303, UE B does not exclude all candidate resources of these two time slots 302 and 303, but considers that some candidate resources can be used according to the resource set (auxiliary information) reported by UE A.
  • the resource set reported by UE A includes resources 501 and 502 in time slot 302 and resource 503 in time slot 303, and UE B will consider these resources, for example, it does not exclude resources 501, 502, 503 Overlapping candidate resources.
  • the resource set reported by UE A includes resources 501 and 502 in time slot 302 and resource 503 in time slot 303. If the resource set reported by UE A is a recommended resource (for example, the default is recommended resources or marked as recommended resources), then UE B can use candidate resources that overlap with resources 501, 502, 503.
  • a recommended resource for example, the default is recommended resources or marked as recommended resources
  • the resource set reported by UE A includes resources 501 and 502 in time slot 302 and resource 503 in time slot 303. If the resource set reported by UE A is a non-recommended resource (for example, the default is resources are not recommended or marked as non-recommended resources), UE B can exclude candidate resources that overlap with resources 501, 502, 503, but can still use the remaining candidate resources in time slots 302 and 303.
  • a non-recommended resource for example, the default is resources are not recommended or marked as non-recommended resources
  • UE B may only consider one or more unmonitored time slots of UE B included in the resource set reported by UE A.
  • the resources in the corresponding time slot or the reservation information of the resources in the corresponding time slot are reserved, and the resources or the resource reservation information of other time slots are ignored.
  • UE B only considers resource exclusion according to the resource set from UE A for time slots 302 and 303.
  • the resource set reported by UE A also includes resources 504 in other time slots, and UE B does not consider these resources 504.
  • UE B still performs resource exclusion according to the result of its own perception. For the time slot corresponding to the time slot that UE B has not monitored, UE B obtains the sensing result by using or considering the resource set reported by UE A (that is, trusting the sensing result of UE A); for the time slot corresponding to the time slot detected by UE B, UE B obtains the sensing result; Use or consider your own perceived results.
  • the The second terminal device excludes all candidate resources of the second time slot.
  • UE A and UE B are far away, or if UE A and UE B are not in the same or adjacent area, the actual perception result of UE A may not be the same as UE B.
  • UE B does not trust UE A's perception result even though UE A may have detected it.
  • FIG. 6 is another example diagram of resource exclusion according to the embodiment of the present application. As shown in FIG. 6 , UE A and UE B are in different areas, and when UE B performs resource selection or reselection, for the unmonitored time slot 301 corresponding to time slots 302 and 303, UE B excludes all candidate resources of these two time slots 302 and 303.
  • the resource set reported by UE A is a recommended resource (for example, it is a recommended resource by default or marked as a recommended resource), even if the resource set reported by UE A includes the resources 601 and 602 in the time slot 302 and As for resources 603 in slot 303, UE B will not consider these resources either.
  • the resource set reported by UE A is a non-recommended resource (for example, a non-recommended resource or marked as a non-recommended resource by default)
  • the resource set reported by UE A includes resources 601 and 602 in time slot 302 and time slot 303.
  • UE B will still exclude all the candidate resources of the two time slots 302 and 303.
  • UE B may not consider one or more unmonitored time slots of UE B included in the resource set reported by UE A.
  • the resources in the corresponding time slot or the reservation information of the resources in the corresponding time slot are reserved, and only the resources or resource reservation information of other time slots are considered.
  • UE B does not consider the resource set from UE A for timeslots 302 and 303.
  • the resource set reported by UE A also includes resources 604 in other time slots, and UE B considers these resources 604.
  • UE B performs resource exclusion according to the perception result of UE A. For the time slot corresponding to the time slot that UE B has not monitored, UE B does not use or consider the resource set reported by UE A (that is, does not trust the perception result of UE A); for the time slot corresponding to the time slot that UE B has detected, UE B Use or consider the resource set reported by UE A (i.e. trust UE A's perception results).
  • Resource exclusion based on distance or location is schematically explained above, and resource exclusion based on signal strength or resource set (assistance information) is further schematically explained below.
  • the second terminal device determines whether the signal strength (RSRP) of the first terminal device is greater than or equal to the first terminal device based on the set of resources (assistance information) or sidelink control information or other signals from the first terminal device The second threshold value.
  • RSRP signal strength
  • the RSRP measurement result of UE B on UE A is the RSRP measurement result of the PSCCH or the DMRS corresponding to the PSSCH sent by UE A perceived by UE B; for another example, it may also be the PSCCH of the resource set sent by UE A perceived by UE B or the measurement result of the DMRS corresponding to the PSSCH.
  • the determination of the said signal strength (RSRP) is greater than or equal to a second threshold value. Whether candidate resources for the second slot are excluded.
  • the second The terminal device when the signal strength (RSRP) is greater than or equal to the second threshold value, and the resource set (assistance information) includes the resources of the second time slot or the corresponding reservation information, the second The terminal device does not exclude all candidate resources of the second time slot, but performs resource exclusion on the candidate resources of the second time slot according to the resource set. For another example, when the signal strength (RSRP) is less than a threshold value, the second terminal device excludes all candidate resources of the second time slot.
  • the signal strength (RSRP) can be used as a judgment condition for judging the relationship between the first terminal device and the second terminal device.
  • the second terminal device specifically performs resource exclusion for example, the content shown in FIGS. 5 and 6 may also be referred to.
  • the second terminal device determines whether the resources detected by itself and the set of resources (assistance information) from the first terminal device are the same or similar.
  • the resources detected by the second terminal device and the resource set from the first terminal device determine the resources of other time slots except the second time slot or the corresponding reservation information are the same, determine The resource detected by itself is the same as the resource set from the first terminal device.
  • the resources detected by the second terminal device and in the resource set from the first terminal device have the same ratio of the number of resources.
  • the value is greater than the third threshold value, it is determined that the resource detected by itself is similar to the resource set from the first terminal device.
  • the difference between the signal strengths (RSRP) of the resources reserved for the same side link control information (SCI) is less than or equal to In the case of the fourth threshold value, it is determined that the resource detected by itself is similar to the resource set from the first terminal device.
  • the second terminal device determines whether the resources detected by itself and the resource set from the first terminal device are same or similar to determine whether the candidate resource of the second time slot is excluded.
  • the second terminal device does not All candidate resources of the second time slot are excluded, and resource exclusion is performed on the candidate resources of the second time slot according to the resource set.
  • the second terminal device excludes all candidate resources in the second time slot.
  • the resource set (assistance information) can be used as a judgment condition for judging the relationship between the first terminal device and the second terminal device.
  • the second terminal device specifically performs resource exclusion, for example, the content shown in FIGS. 5 and 6 may also be referred to.
  • the above description is given by taking the first terminal device and the second terminal device as examples.
  • the embodiments of the present application can be extended to scenarios in which multiple terminal devices report resource sets. For example, for a corresponding time slot of a time slot that UE B does not monitor, there is at least one resource set reported by a terminal device in A1, A2, A3... that includes the resources in this time slot or the reservation of resources in this time slot information, and one or any combination of the above conditions is satisfied between the terminal device and UE B, the corresponding time slot in the selection window of UE B may not be excluded.
  • the resources in the resource set (auxiliary information) will be further described below.
  • the candidate resources that overlap with the resources of the fourth time slot in the selection time period corresponding to the third time slot detected by the second terminal device in the sensing time period are the first type of resources
  • the candidate resources that overlap with the resources of the second time slot included in the resource set are resources of the second type
  • the resource corresponding to the third time slot detected by the second terminal device in the sensing period Selecting a candidate resource in which the resources of the fourth time slot in the time period and the resources of the second time slot included in the resource set do not overlap are the third type of resources;
  • the second terminal device may preferentially select the first type of resources and/or the third type of resources.
  • UE B can give priority to Candidate resources that overlap with these other resources are included in the candidate resource set. For another example, UE B preferentially includes the third type of resources in the candidate resource set.
  • the current selection window can already meet the requirement of X%, there is no need to include the resources in the time slot corresponding to the non-monitored time slot or the candidate resources that overlap the resources indicated by the reservation information for reserving the resources in the corresponding time slot. ; otherwise, candidate resources that overlap with these resources can be included.
  • the second terminal device when the second terminal device performs resource selection or reselection, if the ratio of the number of candidate resources in the candidate resource set to the number of all candidate resources in the selection window does not meet the requirement, the second terminal device may increase the number of Signal strength (RSRP) threshold for a class of resources and proceed with resource selection or reselection.
  • RSRP Signal strength
  • the second terminal device increases the RSRP threshold of the second type of resources and Continue with resource selection or reselection.
  • FIG. 7 is an example diagram of a candidate resource according to an embodiment of the present application.
  • UE B preferentially performs threshold +3dB processing for the first type of resources, and if the requirement of X% is met, the candidate resource set is reported to the MAC layer; otherwise, Threshold +3dB processing is preferentially performed for the second type of resources, and so on, until the X% requirement is met.
  • UE B gives priority to its own perception results. For the resources in the corresponding time slot of the unmonitored time slot, since UE B does not detect it but reports it by UE A, UE B needs to be cautious because the result is not obtained by itself. Considering the use, the priority is lower than the resource corresponding to its own perception result.
  • the second terminal device when the second terminal device selects or reselection resources, the second terminal device can select or re-select resources according to the distance from the first terminal device or the position of the first terminal device, or the strength of the signal from the first
  • the resource set of the terminal device is used to determine whether the candidate resource of the second time slot in the selected time period corresponding to the first time slot that the second terminal device does not monitor in the sensing time period is excluded. In this way, excessive exclusion of resources can be avoided to a certain extent, and the probability of collision and the possibility of channel congestion can be reduced, thereby improving system performance.
  • An embodiment of the present application provides a resource indication method, which is described from the first terminal device.
  • the first terminal device may send the resource set to the second terminal device (refer to the description of the embodiment of the first aspect), and the same content as the embodiment of the first aspect will not be repeated.
  • FIG. 8 is a schematic diagram of a resource indication method according to an embodiment of the present application. As shown in FIG. 8 , the method includes:
  • the first terminal device determines the distance between the first terminal device and the second terminal device, or the position of the second terminal, or the signal strength (RSRP) of the second terminal device; and
  • the first terminal sends a resource set to a second terminal device according to the distance or the position or the signal strength, where the resource set is at least used by the second terminal device to determine the unmonitored No. 1 in the sensing time period. Whether the candidate resource of the second time slot in the selected time period corresponding to a time slot is excluded.
  • FIG. 8 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto.
  • the execution order of the various operations can be adjusted appropriately, and other operations can be added or some of the operations can be reduced.
  • Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the description of the above-mentioned FIG. 8 .
  • the first terminal device sends a resource set to the second terminal device, and the resource set is used by the second terminal device for resource selection/resource exclusion; in addition, the resource set is also used by at least the second terminal device
  • the device is configured to determine whether the candidate resource of the second time slot in the selection time period corresponding to the unmonitored first time slot in the sensing time period is excluded.
  • the resource set includes resources of the second time slot or corresponding reservation information but does not include resources or corresponding reservation information of other time slots.
  • UE A can know in which time slots UE B performs side link transmission through sensing, and can send UE B the sensing result of the corresponding time slot sensed by UE A itself. Since UE A and UE B are relatively close, for the time slot detected by UE A, the sensing results of the two are very likely to be the same, so UE A can only report the resource prediction corresponding to the time slot detected by UE A but not monitored by UE B. It can be used as a supplement to the UE B perception result. In this way, the overhead caused by resource reporting can be reduced.
  • the first terminal device determines whether the distance between the first terminal device and the second terminal device is less than or equal to a first threshold value, or determines whether the first terminal device and the second terminal device are located in the same area or adjacent area.
  • the distance between the first terminal device and the second terminal device is less than or equal to the first threshold value, or the first terminal device and the second terminal device are located in the same area or adjacent areas
  • the resource set (assistance information) includes the resources of the second time slot or the corresponding reservation information but does not include the resources of other time slots or the corresponding reservation information.
  • the first terminal device when the signal strength (RSRP) of the second terminal device is greater than or equal to a threshold value, the first terminal device includes the resource of the second time slot in the resource set (assistance information) or the corresponding The reservation information does not include the resources of other time slots or the corresponding reservation information.
  • RSRP signal strength
  • the resource set does not include resources of the second time slot or corresponding reservation information but includes resources of other time slots or corresponding reservation information.
  • UE A and UE B are far away from each other, the sensing results of the two are very likely to be different, so UE A only reports the resource reservation corresponding to the detected time slot of UE B as a supplement to the sensing result of UE B. In this way, the overhead caused by resource reporting can be reduced.
  • the distance between the first terminal device and the second terminal device is greater than the first threshold value, or the first terminal device and the second terminal device are not located in the same area or adjacent areas.
  • the resource set (assistance information) does not include the resources of the second time slot or the corresponding reservation information, but includes the resources of other time slots or the corresponding reservation information.
  • the first terminal device when the signal strength (RSRP) of the second terminal device is less than or equal to the second threshold value, the first terminal device does not include the second time slot in the resource set (assistance information)
  • the resources or the corresponding reservation information include resources of other time slots or the corresponding reservation information.
  • auxiliary information The content of the auxiliary information has been schematically described above, and the triggering of the auxiliary information will be described below.
  • the first terminal device when the distance between the first terminal device and the second terminal device is less than or equal to a threshold value, or the first terminal device and the second terminal device are located in the same area or adjacent areas, the first terminal device The terminal device is triggered to send the resource set to the second terminal device.
  • the first terminal device upon receiving the trigger signaling sent by the second terminal device, the first terminal device is triggered to send the resource set to the second terminal device.
  • the first terminal device upon detecting resource reservation information for the second time slot, is triggered to send the resource set to the second terminal device.
  • the first terminal sends a resource set to the second terminal device according to the distance or location or signal strength, and the resource set is used by the second terminal device to determine the corresponding first time slot that is not monitored in the sensing time period. Whether the candidate resource of the second time slot in the selected time period is excluded. In this way, excessive exclusion of resources can be avoided to a certain extent, and the probability of collision and the possibility of channel congestion can be reduced, thereby improving system performance.
  • Embodiments of the present application provide a resource selection apparatus.
  • the apparatus may be, for example, a terminal device (eg, the aforementioned second terminal device), or may be one or some components or components configured in the terminal device, and the same content as the embodiment of the first aspect will not be repeated.
  • FIG. 9 is a schematic diagram of a resource selection apparatus according to an embodiment of the present application. As shown in FIG. 9, the resource selection apparatus 900 includes:
  • a determining unit 901 which determines the distance between the first terminal device and the second terminal device, or the position of the first terminal device, or the signal strength of the first terminal device;
  • a receiving unit 902 which receives the resource set from the first terminal device
  • the selection unit 903 when performing resource selection or reselection, according to the distance or position, or the signal strength, or the resource set, determine the first time when the second terminal device does not monitor in the sensing time period Whether the candidate resource of the second slot in the selection time period corresponding to the slot is excluded.
  • the determining unit 901 determines whether the distance between the first terminal device and the second terminal device is based on the location information or the area identifier in the side link control information from the first terminal device is less than or equal to the first threshold value, or it is determined whether the first terminal device and the second terminal device are located in the same area or adjacent areas.
  • the distance between the location of the second terminal device and the center location of the nearest area indicated by the location information in the side link control information by the determining unit 901 is less than or equal to a predetermined distance or the side link
  • it is determined that the distance between the first terminal device and the second terminal device is less than or equal to the first threshold value.
  • the determining unit 901 determines that the first terminal device is the same as or similar to the area indicated by the area identifier in the side link control information when the area identifier of the second terminal device is the same as or similar to the area indicated by the area identifier in the side link control information.
  • the second terminal device is located in the same area or an adjacent area.
  • the determining unit 901 determines whether the distance between the first terminal device and the second terminal device is less than or equal to a first threshold value according to the location information or the area identifier in the resource set, Or determine whether the first terminal device and the second terminal device are located in the same area or adjacent areas.
  • the distance between the location of the second terminal device and the center location of the nearest area indicated by the location information in the resource set by the determining unit 901 is less than or equal to a predetermined distance or the side link control information In the case of the communication range requirement in , it is determined that the distance between the first terminal device and the second terminal device is less than or equal to the first threshold value.
  • the determining unit 901 determines the first terminal device and the second terminal device when the area identifier of the second terminal device is the same as or similar to the area indicated by the area identifier in the resource set. End devices are located in the same area or adjacent areas.
  • the selection unit 903 selects the resource according to the relationship between the first terminal device and the second terminal device. Whether the distance of the second time slot is less than or equal to the first threshold value or whether the first terminal device and the second terminal device are located in the same area or adjacent area, to determine whether the candidate resource of the second time slot is excluded.
  • the distance between the first terminal device and the second terminal device by the selection unit 903 is less than or equal to the first threshold value, or the first terminal device and the second terminal device are located in the same area or adjacent regions, and the resource set includes the resources of the second time slot or the corresponding reservation information, all candidate resources of the second time slot are not excluded, and the resource set is based on the resource set. Resource exclusion is performed on the candidate resources of the second time slot.
  • the distance between the first terminal device and the second terminal device by the selection unit 903 is greater than the first threshold value or the first terminal device and the second terminal device are not located in the same area Or in the case of an adjacent region, all candidate resources of the second time slot are excluded.
  • the determining unit 901 is further configured to determine whether the signal strength of the first terminal device is greater than or equal to the first terminal device according to the resource set or the side link control information or other signals from the first terminal device Two threshold values.
  • the selection unit 903 determines whether the signal strength is greater than or equal to the second threshold value according to whether the signal strength is greater than or equal to the second threshold value. , to determine whether the candidate resource of the second time slot is excluded.
  • the selection unit 903 does not select the All the candidate resources of the two time slots are excluded, and the candidate resources of the second time slot are excluded according to the resource set.
  • the selection unit 903 excludes all candidate resources of the second time slot when the signal strength (RSRP) is less than the second threshold value.
  • the determining unit 901 is further configured to determine whether the resource detected by the second terminal device and the resource set from the first terminal device are the same or similar.
  • the determining unit 901 determines resources of other time slots except the second time slot or corresponding reservations If the information is the same, it is determined that the resource detected by the second terminal device is the same as the resource set from the first terminal device.
  • the determining unit 901 includes resources of other time slots except the second time slot or corresponding presets. In the case that the ratio of the number of resources with the same retained information is greater than the third threshold value, it is determined that the resources detected by the second terminal device are similar to the resource set from the first terminal device.
  • the determining unit 901 determines the difference between the signal strength (RSRP) of the resource reserved for the same sidelink information in the resource detected by the second terminal device and the resource set from the first terminal device When the value is less than or equal to the fourth threshold value, it is determined that the resource set detected by the second terminal device is similar to the resource set from the first terminal device.
  • RSRP signal strength
  • the selection unit 903 selects the resource according to the resource detected by the second terminal device and the resource from the first time slot. Whether the resource set of the terminal device is the same or similar is used to determine whether the candidate resource of the second time slot is excluded.
  • the resource detected by the selection unit 903 in the second terminal device is the same or similar to the resource set from the first terminal device, and the resource set includes the resources of the second time slot or the corresponding resources In the case of reservation information, all candidate resources of the second time slot are not excluded, but resource exclusion is performed on the candidate resources of the second time slot according to the resource set.
  • the selection unit 903 excludes all candidate resources in the second time slot when the resource detected by the second terminal device and the resource set from the first terminal device are not the same or similar.
  • the resource selection apparatus 900 may further include other components or modules, and for the specific content of these components or modules, reference may be made to the related art.
  • FIG. 9 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the above-mentioned components or modules may be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc. The implementation of this application does not limit this.
  • the second terminal device when the second terminal device selects or reselection resources, the second terminal device can select or re-select resources according to the distance from the first terminal device or the position of the first terminal device, or the strength of the signal from the first
  • the resource set of the terminal device is used to determine whether the candidate resource of the second time slot in the selected time period corresponding to the first time slot that the second terminal device does not monitor in the sensing time period is excluded. In this way, excessive exclusion of resources can be avoided to a certain extent, the probability of collision and the possibility of channel congestion can be reduced, and the system performance can be improved.
  • Embodiments of the present application provide a resource indication device.
  • the apparatus may be, for example, a terminal device (eg, the aforementioned first terminal device), or one or some components or components configured in the terminal device, and the same content as the embodiment of the second aspect will not be repeated.
  • FIG. 10 is a schematic diagram of a resource indicating device according to an embodiment of the present application.
  • the resource indication apparatus 1000 includes:
  • a determining unit 1001 which determines the distance between the first terminal device and the second terminal device, or the position of the second terminal, or the signal strength of the second terminal device;
  • a sending unit 1002 which sends a resource set to a second terminal device according to the distance or position or the signal strength, where the resource set is used by the second terminal device to determine a first time slot that is not monitored in a sensing time period Whether the candidate resource of the second time slot in the corresponding selection time period is excluded.
  • the distance between the first terminal device and the second terminal device by the sending unit 1002 is less than or equal to a first threshold value, or the first terminal device and the second terminal device are located in the same
  • the resource set includes the resources of the second time slot or the corresponding reservation information but does not include the resources of other time slots or the corresponding reservation information.
  • the sending unit 1002 when the signal strength of the second terminal device is greater than or equal to a second threshold value, the sending unit 1002 includes, in the resource set, the resources of the second time slot or the corresponding presets.
  • the reserved information does not include the resources of other time slots or the corresponding reservation information.
  • the distance between the first terminal device and the second terminal device by the sending unit 1002 is greater than a first threshold value, or the first terminal device and the second terminal device are not located in the same area Or in the case of an adjacent area, the resource set does not include the resources of the second time slot or the corresponding reservation information but includes the resources of other time slots or the corresponding reservation information.
  • the sending unit 1002 when the signal strength of the second terminal device is less than or equal to a second threshold value, the sending unit 1002 does not include the resources of the second time slot or the corresponding resources in the resource set
  • the reservation information includes resources of other time slots or corresponding reservation information.
  • the resource indication apparatus 1000 may further include other components or modules, and for the specific content of these components or modules, reference may be made to the related art.
  • FIG. 10 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the above-mentioned components or modules may be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc. The implementation of this application does not limit this.
  • the first terminal sends a resource set to the second terminal device according to the distance or location or signal strength, and the resource set is used by the second terminal device to determine the corresponding first time slot that is not monitored in the sensing time period. Whether the candidate resource of the second time slot in the selected time period is excluded. In this way, excessive exclusion of resources can be avoided to a certain extent, and the probability of collision and the possibility of channel congestion can be reduced, thereby improving system performance.
  • An embodiment of the present application further provides a communication system, and reference may be made to FIG. 1 , and the same content as the embodiments of the first aspect to the fourth aspect will not be repeated.
  • the communication system 100 may include at least:
  • the first terminal device 102 which determines the distance between the first terminal device and the second terminal device, or the position of the second terminal, or the signal strength of the second terminal device; and according to the first terminal device The distance between the terminal device and the second terminal device or the position of the second terminal or the signal strength of the second terminal device sends a resource set to the second terminal device;
  • the second terminal device 103 determines the distance between the first terminal device and the second terminal device, or the position of the first terminal device, or the signal strength of the first terminal device; the resource set of the first terminal device; and when performing resource selection or reselection, according to the distance between the first terminal device and the second terminal device or the location of the first terminal device, or the The signal strength of the first terminal device or the resource set, to determine whether the candidate resource of the second time slot in the selected time period corresponding to the first time slot that the second terminal device does not monitor in the sensing time period is whether the candidate resource is to be excluded.
  • the embodiment of the present application also provides a network device, which may be, for example, a base station, but the present application is not limited to this, and may also be other network devices.
  • a network device which may be, for example, a base station, but the present application is not limited to this, and may also be other network devices.
  • FIG. 11 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • the network device 1100 may include: a processor 1110 (eg, a central processing unit CPU) and a memory 1120 ; the memory 1120 is coupled to the processor 1110 .
  • the memory 1120 can store various data; in addition, the program 1130 for information processing is also stored, and the program 1130 is executed under the control of the processor 1110 .
  • the network device 1100 may further include: a transceiver 1140, an antenna 1150, etc.; wherein, the functions of the above components are similar to those in the prior art, and details are not repeated here. It is worth noting that the network device 1100 does not necessarily include all the components shown in FIG. 11 ; in addition, the network device 1100 may also include components not shown in FIG. 11 , and reference may be made to the prior art.
  • the embodiment of the present application also provides a terminal device, but the present application is not limited to this, and may also be other devices.
  • FIG. 12 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1200 may include a processor 1210 and a memory 1220 ; the memory 1220 stores data and programs, and is coupled to the processor 1210 .
  • this figure is exemplary; other types of structures may be used in addition to or in place of this structure to implement telecommunication functions or other functions.
  • the processor 1210 may be configured to execute a program to implement the resource selection method described in the embodiment of the first aspect.
  • the processor 1210 may be configured to control the following: determine the distance between the first terminal device and the second terminal device, or the location of the first terminal device, or the signal strength (RSRP) of the first terminal device ); receiving a resource set from the first terminal device; and when performing resource selection or reselection, determining that the second terminal device is Whether the candidate resources of the second time slot in the selected time period corresponding to the unmonitored first time slot in the time period are excluded.
  • RSRP signal strength
  • the processor 1210 may be configured to execute a program to implement the resource indication method described in the embodiments of the second aspect.
  • the processor 1210 may be configured to control the following: determine the distance between the first terminal device and the second terminal device, or the position of the second terminal, or the signal strength of the second terminal device; and according to The distance or the location or the signal strength sends a resource set to the second terminal device, where the resource set is used by the second terminal device to determine the selected time period corresponding to the unmonitored first time slot in the sensing time period Whether the candidate resource for the second slot in is excluded.
  • the terminal device 1200 may further include: a communication module 1230 , an input unit 1240 , a display 1250 , and a power supply 1260 .
  • the functions of the above components are similar to those in the prior art, and details are not repeated here. It is worth noting that the terminal device 1200 does not necessarily include all the components shown in FIG. 12 , and the above components are not required; in addition, the terminal device 1200 may also include components not shown in FIG. 12 . There is technology.
  • An embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the resource selection method according to the embodiment of the first aspect.
  • An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the resource selection method described in the embodiment of the first aspect.
  • the embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the resource indication method according to the embodiment of the second aspect.
  • the embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program causes the terminal device to execute the resource indication method described in the embodiment of the second aspect.
  • the apparatuses and methods above in the present application may be implemented by hardware, or may be implemented by hardware combined with software.
  • the present application relates to a computer-readable program that, when executed by logic components, enables the logic components to implement the above-described apparatus or constituent components, or causes the logic components to implement the above-described various methods or steps.
  • the present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.
  • the method/apparatus described in conjunction with the embodiments of this application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams shown in the figures and/or one or more combinations of the functional block diagrams may correspond to either software modules or hardware modules of the computer program flow.
  • These software modules may respectively correspond to the various steps shown in the figure.
  • These hardware modules can be implemented by, for example, solidifying these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • a software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor, such that the processor can read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • the functional blocks and/or one or more combinations of the functional blocks described in the drawings it can be implemented as a general-purpose processor, a digital signal processor (DSP) for performing the functions described in this application. ), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof.
  • DSP digital signal processor
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described with respect to the figures can also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • a resource selection method comprising:
  • the second terminal device determines the distance between the first terminal device and the second terminal device, or the position of the first terminal device, or the signal strength (RSRP) of the first terminal device;
  • the second terminal device receives the resource set from the first terminal device
  • the second terminal device determines, according to the distance or position, or the signal strength, or the resource set, the first non-monitoring by the second terminal device in the sensing time period. Whether the candidate resource of the second time slot in the selected time period corresponding to the time slot is excluded.
  • Supplement 2 The method according to Supplement 1, wherein the second terminal device determines the first terminal device according to location information or area identification in the sidelink control information from the first terminal device Whether the distance with the second terminal device is less than or equal to a first threshold value, or determine whether the first terminal device and the second terminal device are located in the same area or adjacent areas.
  • Supplement 3 The method according to Supplement 2, wherein the distance between the second terminal device's own location and the center location of the nearest area indicated by the location information in the side link control information In the case where the distance between the first terminal device and the second terminal device is less than or equal to the predetermined distance or the communication range requirement in the side link control information, it is determined that the distance between the first terminal device and the second terminal device is less than or equal to the first threshold value .
  • Supplement 4 The method according to Supplement 2, wherein, when the second terminal device has the same or similar area identifier as the area indicated by the area identifier in the side link control information, It is determined that the first terminal device and the second terminal device are located in the same area or adjacent areas.
  • Supplement 5 The method according to Supplement 1, wherein the second terminal device determines the distance between the first terminal device and the second terminal device according to the location information or the area identifier in the resource set Whether the distance is less than or equal to the first threshold value, or it is determined whether the first terminal device and the second terminal device are located in the same area or adjacent area.
  • Supplement 6 The method according to Supplement 5, wherein the distance between the second terminal device's own location and the center location of the nearest area indicated by the location information in the resource set is less than or equal to In the case of a predetermined distance or a communication range requirement in the side link control information, it is determined that the distance between the first terminal device and the second terminal device is less than or equal to the first threshold value.
  • Supplement 7 The method according to Supplement 5, wherein the second terminal equipment determines the The first terminal device and the second terminal device are located in the same area or adjacent areas.
  • Supplement 8 The method according to any one of Supplementary Notes 1 to 7, wherein in the case that the resource set includes the resources of the second time slot or the corresponding reservation information, according to the first Whether the distance between the terminal equipment and the second terminal equipment is less than or equal to the first threshold value or whether the first terminal equipment and the second terminal equipment are located in the same area or adjacent areas, to determine the first terminal equipment Whether the candidate resource of two slots is excluded.
  • Supplement 9 The method according to Supplement 8, wherein when the distance is less than or equal to the first threshold value or the first terminal device and the second terminal device are located in the same area or adjacent areas , and when the resource set includes the resources of the second time slot or the corresponding reservation information, the second terminal device does not exclude all the candidate resources of the second time slot, but according to the The resource set performs resource exclusion on the candidate resources of the second time slot.
  • Supplement 10 The method according to Supplement 8, wherein when the distance is greater than the first threshold value or the first terminal device and the second terminal device are not located in the same area or adjacent areas In this case, the second terminal device excludes all candidate resources of the second time slot.
  • Supplement 11 The method according to Supplement 1, wherein the method further comprises:
  • the second terminal device determines whether the signal strength (RSRP) of the first terminal device is greater than or equal to a second threshold according to the resource set or the side link control information or other signals from the first terminal device value.
  • RSRP signal strength
  • Supplement 12 The method according to Supplement 11, wherein, when the resource set includes the resources of the second time slot or the corresponding reservation information, according to whether the signal strength (RSRP) is greater than or equal to the second threshold value, to determine whether the candidate resource of the second time slot is excluded.
  • RSRP signal strength
  • Supplement 13 The method according to Supplement 11, wherein when the signal strength (RSRP) is greater than or equal to the second threshold value, and the resource set includes the resources of the second time slot or In the case of corresponding reservation information, the second terminal device does not exclude all candidate resources of the second time slot, but performs resource exclusion for the candidate resources of the second time slot according to the resource set.
  • RSRP signal strength
  • Supplement 14 The method according to Supplement 11, wherein when the signal strength (RSRP) is less than the second threshold value, the second terminal device excludes all of the second time slot candidate resource.
  • RSRP signal strength
  • Supplement 15 The method according to Supplement 1, wherein the method further comprises:
  • the second terminal device determines whether the resources detected by itself and the resource set from the first terminal device are the same or similar.
  • Supplement 16 The method according to Supplement 15, wherein the second terminal device is in the resources detected by itself and in the resource set from the first terminal device, except for the second time In the case that the resources of other time slots outside the slot or the corresponding reservation information are the same, it is determined that the resources detected by itself are the same as the resource set from the first terminal device.
  • Supplement 17 The method according to Supplement 15, wherein the second terminal device is in the resources detected by itself and in the resource set from the first terminal device, except for the second time In the case that the resources of other time slots outside the slot or the ratio of the number of resources with the same reservation information is greater than the third threshold value, it is determined that the resources detected by itself are similar to the resource set from the first terminal device.
  • Supplement 18 The method according to Supplement 15, wherein, in the resources detected by the second terminal device and in the resource set from the first terminal device, for the same sidelink information
  • RSRP signal strengths
  • Supplement 19 The method according to Supplement 15, wherein, when the resource set includes the resources of the second time slot or the corresponding reservation information, according to the resources detected by itself and the resources from the first time slot Whether the resource set of a terminal device is the same or similar is used to determine whether the candidate resource of the second time slot is excluded.
  • Supplement 20 The method according to Supplement 15, wherein the resource detected by itself is the same as or similar to the resource set from the first terminal device, and the resource set includes the second time slot
  • the second terminal device does not exclude all the candidate resources of the second time slot, and performs resource allocation for the candidate resources of the second time slot according to the resource set exclude.
  • Supplement 21 The method according to Supplement 15, wherein in the case that the resource detected by itself and the resource set from the first terminal device are not the same or similar, the second terminal device excludes the All candidate resources in the second slot.
  • Supplement 22 The method according to any one of Supplementary Notes 1 to 21, wherein, in the selection period corresponding to the third time slot monitored by the second terminal device in the sensing period The candidate resources whose resources of the fourth time slot overlap are the first type of resources, and the candidate resources that overlap with the resources of the second time slot included in the resource set are the second type of resources; A candidate resource in which neither the resources of the fourth time slot in the selection time period corresponding to the third time slot detected in the sensing time period nor the resources of the second time slot included in the resource set overlap for the third type of resources;
  • the second terminal device When performing resource selection or reselection, the second terminal device preferentially selects the first type of resources and/or the third type of resources.
  • the second terminal device increases the RSRP threshold value of the first type of resources and continues to process the resources. select or reselect.
  • Supplement 24 The method according to Supplement 23, wherein the method further comprises:
  • the second terminal device increases the RSRP threshold of the second type of resources and continues to perform the process. Resource selection or reselection.
  • a resource indication method comprising:
  • the first terminal device determines the distance between the first terminal device and the second terminal device, or the location of the second terminal, or the signal strength (RSRP) of the second terminal device;
  • the first terminal sends a resource set to the second terminal device according to the distance or the position or the signal strength, and the resource set is used by the second terminal device to determine the unmonitored first time slot in the sensing time period Whether the candidate resource of the second time slot in the corresponding selection time period is excluded.
  • Supplement 26 The method according to Supplement 25, wherein the resource set includes resources of the second time slot or corresponding reservation information but does not include resources or corresponding reservation information of other time slots.
  • Supplement 27 The method according to Supplement 25 or 26, wherein the method further comprises:
  • the first terminal device determines whether the distance between the first terminal device and the second terminal device is less than or equal to a first threshold value, or determines whether the first terminal device and the second terminal device are in the same area or adjacent areas.
  • Supplement 28 The method according to Supplement 27, wherein the method further comprises:
  • the resource The set includes the resources of the second time slot or the corresponding reservation information but does not include the resources of other time slots or the corresponding reservation information.
  • Supplement 29 The method according to Supplement 25 or 26, wherein the method further comprises:
  • the first terminal device When the signal strength (RSRP) of the second terminal device is greater than or equal to the second threshold value, the first terminal device includes the resource of the second time slot or the corresponding preset in the resource set.
  • the reserved information does not include the resources of other time slots or the corresponding reservation information.
  • Supplement 30 The method according to Supplement 25, wherein the resource set does not include resources of the second time slot or corresponding reservation information but includes resources of other time slots or corresponding reservation information.
  • Supplement 31 The method according to Supplement 25 or 27, wherein the method further comprises:
  • the resource set does not include the resources of the second time slot or the corresponding reservation information but includes the resources of other time slots or the corresponding reservation information.
  • Supplement 32 The method according to Supplement 25 or 29, wherein the method further comprises:
  • the first terminal device does not include the resources of the second time slot or the corresponding resources in the resource set.
  • the reservation information includes resources of other time slots or corresponding reservation information.
  • Supplement 33 The method according to any one of Supplements 25 to 32, wherein the distance between the first terminal device and the second terminal device is less than or equal to a first threshold value, or the When the first terminal device and the second terminal device are located in the same area or adjacent areas, the first terminal device is triggered to send the resource set to the second terminal device.
  • Supplement 34 The method according to any one of Supplementary Notes 25 to 32, wherein, in the case of receiving the trigger signaling sent by the second terminal device, the first terminal device is triggered to send a message to the first terminal device.
  • the second terminal device sends the resource set.
  • Supplementary note 35 The method according to any one of supplementary notes 25 to 32, wherein, in the case of detecting the resource reservation information of the second time slot, the first terminal device is triggered to send to the first terminal device The second terminal device sends the resource set.
  • a resource selection method comprising:
  • the second terminal device receives the resource set sent by the first terminal device.
  • the second terminal device determines, according to the resource set, a second time in the selection time period corresponding to the first time slot that the second terminal device does not monitor in the sensing time period. Whether candidate resources for the slot are excluded.
  • Supplement 37 The method according to Supplement 36, wherein the method further comprises:
  • the second terminal device determines the distance between the first terminal device and the second terminal device, or the location of the first terminal device, or the signal strength (RSRP) of the first terminal device;
  • the resource set includes the resources of the second time slot or the corresponding reservation information, according to whether the distance is less than or equal to the first threshold value, or the first terminal device and the second terminal device are located in In the same area or an adjacent area, or the signal strength is greater than or equal to the second threshold value, or the resource set detected by itself is the same or similar to the resource set from the first terminal device, to determine the second Whether the candidate resource for the slot is excluded.
  • a resource indication method comprising:
  • the first terminal device performs resource awareness and generates a resource set
  • the first terminal device sends a resource set to the second terminal device, and the resource set is used by the second terminal device to determine the resource set in the selected time period corresponding to the unmonitored first time slot in the sensing time period. Whether candidate resources for the second slot are excluded.
  • a terminal device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement any one of Supplementary Notes 25 to 35 and 38 or be configured to execute the computer program to implement the resource selection method described in any one of Supplementary Notes 1 to 24 and 36 to 37.

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Abstract

本申请实施例提供一种资源选择和资源指示方法及装置；所述资源选择方法包括：第二终端设备确定第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度；接收来自所述第一终端设备的资源集合；以及在进行资源选择或重选时，根据所述距离或位置、或者所述信号强度、或者所述资源集合确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。

Description

资源选择和资源指示方法及装置 技术领域
本申请实施例涉及通信技术领域。
背景技术
在Rel-15以及之前版本的车联网(V2X，Vehicle to Everything)通信中，支持边链路(Sidelink)资源的两种分配方式：Mode 1和Mode 2。对于Mode 1，边链路资源由网络设备(例如基站)进行分配而获得；对于Mode 2，终端设备自主地选择发送资源，即发送资源通过感知(sensing)或检测-资源选择过程获得。
另一方面，新无线(NR，New Radio)V2X是目前Rel-16标准化的研究项目之一，相比于长期演进(LTE，Long Term Evolution)V2X，NR V2X需要支持诸多新场景和新业务(例如远程驾驶、自动驾驶和车队行驶等)，需要满足更高的技术指标(高可靠、低时延、高数据速率等)。
应该注意，上面对技术背景的介绍只是为了方便对本申请的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本申请的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
发明人发现：由于V2X终端设备的半双工特性，V2X终端设备可能在某些时隙进行边链路发送，从而不能获得这些时隙的感知结果。或者，由于V2X终端设备采用了部分感知方案，V2X终端设备可能在某些时隙不进行资源感知或监听(monitoring)，从而不能获得这些时隙的感知结果。这有可能会导致与这些时隙间隔为可能的预留周期的时隙内的所有候选资源被全部排除，从而导致资源过度排除而使终端设备不得不选择干扰较大的资源进行发送，增大了碰撞概率以及信道拥塞情况产生的可能性，从而影响系统性能。
针对上述问题的至少之一，本申请实施例提供一种资源选择和资源指示方法及装置。
根据本申请实施例的一个方面，提供一种资源选择方法，包括：
第二终端设备确定第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度；
接收来自所述第一终端设备的资源集合；以及
在进行资源选择或重选时，根据所述距离或位置、或者所述信号强度、或者所述资源集合确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
根据本申请实施例的另一个方面，提供一种资源选择装置，配置于第二终端设备，所述装置包括：
确定单元，其确定第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度；
接收单元，其接收来自所述第一终端设备的资源集合；以及
选择单元，其在进行资源选择或重选时，根据所述距离或位置、或者所述信号强度、或者所述资源集合确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
根据本申请实施例的另一个方面，提供一种资源指示方法，包括：
第一终端设备确定所述第一终端设备和第二终端设备之间的距离、或者所述第二终端的位置、或者所述第二终端设备的信号强度；以及
根据所述距离或位置或者所述信号强度向第二终端设备发送资源集合，所述资源集合至少被所述第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
根据本申请实施例的另一个方面，提供一种资源指示装置，配置于第一终端设备，所述装置包括：
确定单元，其确定所述第一终端设备和第二终端设备之间的距离、或者所述第二终端的位置、或者所述第二终端设备的信号强度；以及
发送单元，其根据所述距离或位置或者所述信号强度向第二终端设备发送资源集合，所述资源集合至少被所述第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
根据本申请实施例的另一个方面，提供一种通信系统，包括：
第一终端设备，其确定所述第一终端设备和第二终端设备之间的距离、或者所述第 二终端的位置、或者所述第二终端设备的信号强度；以及根据所述第一终端设备和第二终端设备之间的距离或所述第二终端的位置或者所述第二终端设备的信号强度向所述第二终端设备发送资源集合；
第二终端设备，确定所述第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度；接收来自所述第一终端设备的所述资源集合；以及在进行资源选择或重选时，根据所述第一终端设备和所述第二终端设备之间的距离或所述第一终端设备的位置、或者所述第一终端设备的信号强度、或者所述资源集合，确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
本申请实施例的有益效果之一在于：第二终端设备在进行资源选择或重选时，根据与第一终端设备的距离或第一终端设备的位置、或者第一终端设备的信号强度、或者来自第一终端设备的资源集合，来确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。由此，能够在一定程度上避免资源过度排除，减小碰撞概率以及信道拥塞情况产生的可能性，从而提高系统性能。
参照后文的说明和附图，详细公开了本申请的特定实施方式，指明了本申请的原理可以被采用的方式。应该理解，本申请的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本申请的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本申请实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本申请实施例的通信系统的示意图；
图2是终端设备进行边链路资源选择的一示意图；
图3是未监听时隙对应的时隙被排除的一示意图；
图4是本申请实施例的资源选择方法的一示意图；
图5是本申请实施例的进行资源排除的一示例图；
图6是本申请实施例的进行资源排除的另一示例图；
图7是本申请实施例的候选资源的一示例图；
图8是本申请实施例的资源指示方法的一示意图；
图9是本申请实施例的资源选择装置的一示意图；
图10是本申请实施例的资源指示装置的一示意图；
图11是本申请实施例的网络设备的示意图；
图12是本申请实施例的终端设备的示意图。
具体实施方式
参照附图，通过下面的说明书，本申请的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本申请的特定实施方式，其表明了其中可以采用本申请的原则的部分实施方式，应了解的是，本申请不限于所描述的实施方式，相反，本申请包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本申请实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“所述”应理解为既包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本申请实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A，LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division Multiple  Access)、高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信系统中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本申请实施例中，术语“网络设备”例如是指通信系统中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备：基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
其中，基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femeto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本申请实施例中，术语“用户设备”(UE，User Equipment)或者“终端设备”(TE，Terminal Equipment或Terminal Device)例如是指通过网络设备接入通信网络并接收网络服务的设备。终端设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
其中，终端设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，终端设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、 机器到机器(M2M，Machine to Machine)终端，等等。
此外，术语“网络侧”或“网络设备侧”是指网络的一侧，可以是某一基站，也可以包括如上的一个或多个网络设备。术语“用户侧”或“终端侧”或“终端设备侧”是指用户或终端的一侧，可以是某一UE，也可以包括如上的一个或多个终端设备。本文在没有特别指出的情况下，“设备”可以指网络设备，也可以指终端设备。
以下通过示例对本申请实施例的场景进行说明，但本申请不限于此。
图1是本申请实施例的通信系统的示意图，示意性说明了以终端设备和网络设备为例的情况，如图1所示，通信系统100可以包括网络设备101和终端设备102、103。为简单起见，图1仅以两个终端设备和一个网络设备为例进行说明，但本申请实施例不限于此。
在本申请实施例中，网络设备101和终端设备102、103之间可以进行现有的业务或者未来可实施的业务发送。例如，这些业务可以包括但不限于：增强的移动宽带(eMBB，enhanced Mobile Broadband)、大规模机器类型通信(mMTC，massive Machine Type Communication)和高可靠低时延通信(URLLC，Ultra-Reliable and Low-Latency Communication)，等等。
值得注意的是，图1示出了两个终端设备102、103均处于网络设备101的覆盖范围内，但本申请不限于此。两个终端设备102、103可以均不在网络设备101的覆盖范围内，或者一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外。
在本申请实施例中，两个终端设备102、103之间可以进行边链路发送。例如，两个终端设备102、103可以都在网络设备101的覆盖范围之内进行边链路发送以实现V2X通信，也可以都在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信，还可以一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信。
在本申请实施例中，终端设备102和/或103可以自主选择边链路资源(即采用Mode 2)，在这种情况下边链路发送可以与网络设备101无关，即网络设备101是可选的。当然，本申请实施例也可以将自主选择边链路资源(即采用Mode 2)和由网络设备分配边链路资源(即采用Mode 1)结合起来；本申请实施例不对此进行限制。
在LTE V2X中，终端设备能够通过感知检测+资源选择的过程来获得边链路发送 资源，其中可以持续不断地进行感知(sensing)来获得资源池内资源的占用情况。例如，终端设备可以根据前一段时间内(称为感知窗)的资源占用情况来估计后一段时间内(称为选择窗)的资源占用情况。
图2是终端设备进行边链路资源选择的一示意图，如图2所示，终端设备例如通过第(n-1000)至第(n-1)个子帧或时隙(即感知窗，sensing window)内的边链路控制信息(SCI，Sidelink Control Information)和对不同位置时频资源参考信号的检测，可以获得该感知窗的资源占用情况，进而可以估计出第(n+T1)至第(n+T2)个子帧或时隙(即选择窗，selection window)的资源占用情况。
例如，当有待发送的边链路数据时，终端设备的物理层从高层(例如介质访问控制(MAC，Media Access Control)层)获得资源选择的粒度R x,y；该粒度可以表示一个子帧内的一系列连续的子信道，每个子信道包括多于一个的连续物理资源块(PRB，Physical Resource Block)，PRB个数可以由资源池决定，资源池由网络设备(例如基站)配置或预配置；整个选择窗中的所有子帧内R x,y大小的资源(以下简称为R x,y候选资源)的集合被初始化定义为Set A。
终端设备可以根据在待发送数据到达之前在该感知窗内进行检测的结果，排除Set A中的部分候选资源。例如，在Rel-16的NR V2X中，以下的R x,y候选资源需要被排除：
——在时隙slot
Figure PCTCN2020121272-appb-000001
检测到SCI，从对应的SCI format1-A中获得了指示的预留周期P rsvp_RX和指示的对应数据的优先级prio RX；
——与检测到的SCI format 1-A对应的物理边链路控制信道(PSCCH，Physical Sidelink Control Channel)的解调参考信号(DMRS，De-modulation Reference Signal)或物理边链路共享信道(PSSCH，Physical Sidelink Shared Channel)的DMRS(取决于资源池的配置)的参考信号接收功率(RSRP，Reference Signal Receiving Power)的测量结果大于Th(prio RX)；其中，Th(prio RX)取值为对应的高层参数ThresRSRP_pi_pj，p j是高层指示的当前UE待发送数据的优先级，p i是检测到的其他UE的SCI中指示的优先级；
——对应的SCI format 1-A指示的资源以及其可能预留的下一个周期的资源(例如对于小于100ms的短周期，可能包括多个)，与当前发送的候选集合Set A中的资 源
Figure PCTCN2020121272-appb-000002
存在重叠(overlap)，j＝0,1,…,C resel-1。这里资源是指当前选择窗内的set A的候选资源，以及周期业务其后续周期可能预留的周期位置上的资源。
如果经过了上面的资源排除之后，Set A中所剩余的R x,y候选资源个数不足初始总数的X％(例如20％)，则将该RSRP门限值增大3dB，从初始的Set A中重新进行排除，直到Set A中剩余的R x,y候选资源个数大于或等于初始总数的20％为止。
将Set A中的R x,y候选资源放入Set B，其中，Set B是一个初始为空的集合。
然后，终端设备的物理层可以将Set B上报给MAC层，MAC层在Set B中进行随机选择，选择一个候选资源进行数据发送。此外，在指示的资源中选择一个解调和编码方案(MCS，Modulation and Coding Scheme)进行数据发送。
值得注意的是，以上仅对NR V2X中感知检测+资源选择的过程进行了示意性说明。关于上述过程的具体内容，还可以参考3GPP TS 36.213 V15.2.0中第14.1.1.6等处的内容。
由于V2X UE具有半双工特性，在相同时间内收发不能同时进行。由于UE在进行发送的时隙内不能进行感知(sensing)，会导致下述资源也需要从候选资源集合中排除：
——UE在感知窗内对时隙
Figure PCTCN2020121272-appb-000003
没有进行检测的资源；
——对所有sl-ResourceReservePeriodList对应的周期候选值，在时隙
Figure PCTCN2020121272-appb-000004
可能进行了周期预留的对应时隙的资源；即如果所有可能预留的时隙在选择窗内，则该时隙内的所有候选资源均需要排除。
图3是未监听时隙(unmonitored slot)对应的时隙被排除的一示意图，如图3所示，例如由于V2X UE的半双工特性，UE B在感知窗的时隙301没有进行监听(或称为检测或感知)，则在该时隙301对应的选择窗中的时隙302和303中的全部候选资源(包括与P0和P1重叠的候选资源)均被排除。
由于NR V2X中支持了比LTE V2X更多的候选周期值，例如其中大多数为小于P(例如小于或等于100ms)的短周期Ps，相对于长周期每次只需要排除1个时隙的全部候选资源，短周期每次需要排除
Figure PCTCN2020121272-appb-000005
个时隙内的全部候选资源。所以，由于未监听时隙引起的资源排除，在NR V2X中可能远多于LTE V2X，这有可能会导致资源过度排除而使终端设备不得不选择干扰较大的资源进行发送，增大了碰撞概率以及信 道拥塞情况产生的可能性，影响了系统性能。
在本申请实施例中，以V2X为例对边链路进行说明，但本申请不限于此，还可以适用于V2X以外的边链路发送场景。在以下的说明中，在不引起混淆的情况下，术语“边链路”和“V2X”可以互换，术语“PSFCH”和“边链路反馈信道”可以互换，术语“PSCCH”和“边链路控制信道”或“边链路控制信息”可以互换，术语“PSSCH”和“边链路数据信道”或“边链路数据”也可以互换。
另外，发送(transmitting)或接收(receiving)PSCCH可以理解为发送或接收由PSCCH承载的边链路控制信息；发送或接收PSSCH可以理解为发送或接收由PSSCH承载的边链路数据；发送或接收PSFCH可以理解为发送或接收由PSFCH承载的边链路反馈信息。边链路发送(Sidelink transmission，也可称为边链路传输)可以理解为PSCCH/PSSCH发送或者边链路数据/信息发送。
第一方面的实施例
本申请实施例提供一种资源选择方法，从第二终端设备进行说明。其中第二终端设备可以向第一终端设备发送边链路数据，因此第二终端设备需要进行资源选择以确定边链路数据的发送资源。从边链路数据发送的角度，本申请实施例的第二终端设备为发送设备，第一终端设备为接收设备。
此外，第一终端设备可以向第二终端设备发送资源集合(也可称为资源信息)。资源集合可以指示边链路资源本身，也可以指示与边链路资源相关的信息，例如优先级、RSRP测量结果等。在以下的说明中，在不引起混淆的情况下，术语“资源集合”和“辅助信息”或“资源信息”可以互换。
图4是本申请实施例的资源选择方法的一示意图，如图4所示，该方法包括：
401，第二终端设备确定第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度(RSRP)；
402，所述第二终端设备接收来自所述第一终端设备的资源集合；以及
403，所述第二终端设备在进行资源选择或重选时，根据所述距离或位置、或者所述信号强度、或者所述资源集合确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
值得注意的是，以上附图4仅对本申请实施例进行了示意性说明，但本申请不限 于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图4的记载。
在本申请实施例中，感知时间段(感知窗)中未监听的第一时隙(例如图3所示的时隙301)对应于选择时间段(选择窗)中的一个或多个第二时隙(例如图3所示的时隙302和303)。
例如，假设一个未监听的第一时隙为m，则对应的第二时隙为m+q*P′ rsvp_RX，P′ rsvp_RX是P rsvp_RX转换到逻辑时隙(logical slot)之后的对应时隙，如下式(1)所述；其中P rsvp_RX是资源池内配置的sl-ResourceReservePeriodList中指示的所有可能周期中的一个。
Figure PCTCN2020121272-appb-000006
其中，N为20ms内能够被用于边链路发送的时隙的个数。q＝1,2,…,Q，其中，
如果
Figure PCTCN2020121272-appb-000007
且n′-m≤P′ rsvp_RX；其中若时隙n属于集合
Figure PCTCN2020121272-appb-000008
则
Figure PCTCN2020121272-appb-000009
否则时隙
Figure PCTCN2020121272-appb-000010
时隙n后属于集合
Figure PCTCN2020121272-appb-000011
的第一个符号；则
Figure PCTCN2020121272-appb-000012
否则，Q＝1。
其中，n为触发资源选择的时隙；T scal被设置为转换成以毫秒为单位的选择窗T 2的大小；
Figure PCTCN2020121272-appb-000013
表示为短周期业务；
Figure PCTCN2020121272-appb-000014
表示资源池内的时域资源。
以上仅对感知窗中的第一时隙和选择窗中的第二时隙的对应进行了示意性说明，但本申请不限于此，关于感知窗、选择窗、资源感知、资源选择和候选资源等具体内容，还可以参考相关技术。
在本申请实施例中，终端设备可以进行边链路资源选择或重选，称为(re-)selection。所述资源重选可以由终端设备进行资源重评估或抢占检测的结果触发，也可以将“资源选择或重选”称为“资源选择/资源重选/资源重评估/抢占检测”。关于资源 选择/资源重选/资源重评估/抢占检测的具体内容，可以参考相关技术，在此不再赘述。
在一些实施例中，第二终端设备可以确定第一终端设备和第二终端设备之间的距离是否小于或等于门限值、或者第一终端设备和第二终端设备是否位于同一区域或相邻区域。以下先对如何确定距离或位置进行示意性说明。
在一些实施例中，第二终端设备根据来自第一终端设备的边链路控制信息(SCI)中的位置信息或区域标识来确定第一终端设备和第二终端设备之间的距离是否小于或等于第一门限值，或者确定第一终端设备和第二终端设备是否位于同一区域或相邻区域。
例如，第二终端设备解码该边链路控制信息(SCI)后，如果其中指示了第一终端设备的位置信息或区域标识；第二终端设备在自身位置与所述边链路控制信息中的位置信息或者区域标识(Zone_id)所指示的最近区域的中心位置之间的距离小于或等于预定距离或者所述边链路控制信息中的通信范围要求的情况下，确定第一终端设备和第二终端设备之间的距离小于或等于第一门限值。
再例如，第二终端设备解码该边链路控制信息(SCI)后，如果其中指示了第一终端设备的位置信息，该位置信息为x,y坐标，则第二终端设备可以直接计算第一终端设备和第二终端设备之间的距离。
再例如，第二终端设备解码该边链路控制信息(SCI)后，如果其中指示了第一终端设备的区域标识，第二终端设备可以将自身区域标识与所述边链路控制信息中的所述区域标识进行比较；在自身区域标识与所述边链路控制信息中的所述区域标识(例如区域索引或者Zone_id)所指示的区域相同或相近的情况下，确定第一终端设备和第二终端设备位于同一区域或相邻区域。
在一些实施例中，第二终端设备根据所述资源集合(辅助信息)中的位置信息或区域标识来确定第一终端设备和第二终端设备之间的距离是否小于或等于第一门限值，或者确定第一终端设备和第二终端设备是否位于同一区域或相邻区域。
例如，所述第二终端设备在自身位置与所述资源集合中的位置信息或者区域标识(Zone_id)所指示的最近区域的中心位置之间的距离小于或等于预定距离或者所述边链路控制信息中的通信范围要求的情况下，确定第一终端设备和第二终端设备之间的距离小于或等于第一门限值。
再例如，所述资源集合中指示了第一终端设备的位置信息，该位置信息为x,y 坐标，则第二终端设备可以直接计算第一终端设备和第二终端设备之间的距离。
再例如，第二终端设备在自身区域标识与所述资源集合中的区域标识(例如区域索引或者Zone_id)所指示的区域相同或相近的情况下，确定第一终端设备和第二终端设备位于同一区域或相邻区域。
以上仅对如何确定距离或位置进行示意性说明，但本申请不限于此。以下再对如何确定第二时隙的候选资源是否被排除进行示意性说明。
在一些实施例中，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据第一终端设备和第二终端设备之间的距离是否小于或等于第一门限值或者第一终端设备和第二终端设备是否位于同一区域或相邻区域，来确定所述第二时隙的候选资源是否被排除。
例如，第二时隙对应的预留信息是预留了该第二时隙内的资源的指示信息，该指示信息例如由第一终端设备在第二终端设备感知窗中的第一时隙感知到的边链路控制信息(SCI)指示，该边链路控制信息由于第二终端的发送或者省电操作并没有被第二终端设备感知到。关于资源如何被指示以及如何被预留，还可以参考相关技术。
在一些实施例中，在第一终端设备和第二终端设备的距离小于或等于第一门限值、或者第一终端设备和第二终端设备位于同一区域或相邻区域，且所述资源集合(辅助信息)中包括所述第二时隙的资源或者对应的预留信息的情况下，第二终端设备不排除所述第二时隙的全部候选资源(例如跳过排除第二时隙的全部候选资源的步骤)，而根据所述资源集合(辅助信息)对所述第二时隙的候选资源进行资源排除。
例如，如果UE A与UE B的距离较近，或者UE A与UE B在相同或相邻的区域之内，则UE A的实际感知结果可能与UE B完全相同。对应于UE B的未监听时隙，由于UE A可能进行了检测，这样如果UE A将这部分时隙的检测结果上报给UE B，相当于UE A代替了UE B进行检测，这样相当于对UE B的检测结果进行了补充，使得UE B的候选资源集合增大，有利于增大资源利用率和减小碰撞概率。
图5是本申请实施例的进行资源排除的一示例图，如图5所示，UE A和UE B处于同一区域，则UE B进行资源选择或重选时，对于未监听时隙301对应的时隙302和303，UE B并不排除这两个时隙302和303的全部候选资源，而是根据UE A上报的资源集合(辅助信息)考虑有些候选资源能够被使用。
例如，如图5所示，UE A上报的资源集合中包括时隙302中的资源501、502 以及时隙303中的资源503，UE B会考虑这些资源，例如不排除与资源501、502、503重叠的候选资源。
再例如，如图5所示，UE A上报的资源集合中包括时隙302中的资源501、502以及时隙303中的资源503，如果UE A上报的资源集合为推荐资源(例如默认为推荐资源或者标记为推荐资源)，则UE B能够使用与资源501、502、503重叠的候选资源。
再例如，如图5所示，UE A上报的资源集合中包括时隙302中的资源501、502以及时隙303中的资源503，如果UE A上报的资源集合为不推荐资源(例如默认为不推荐资源或者标记为不推荐资源)，则UE B可以排除与资源501、502、503重叠的候选资源，但仍然可以使用时隙302和303中剩余的候选资源。
进一步地，UE B在资源选择/重选/重评估/抢占检测过程对应的资源排除步骤中，对于UE A上报的资源集合，可以只考虑其中包含的UE B的一个或多个未监听时隙对应的时隙内资源或预留该对应时隙内资源的预留信息，而忽略其它时隙的资源或资源预留信息。
例如，对于图5中选择窗的候选资源，UE B只对于时隙302和303考虑根据来自UE A的资源集合进行资源排除。例如，如图5所示，UE A上报的资源集合中还包括其他时隙中的资源504，UE B不会考虑这些资源504。
即，如果UE A与UE B的距离较近，或者UE A与UE B在相同或相邻的区域之内，则对于其他时隙的候选资源，UE B仍然按照自身感知的结果进行资源排除。针对UE B未监听时隙对应的时隙，UE B使用或考虑UE A上报的资源集合(即相信UE A的感知结果)获得感知结果；针对UE B已检测时隙对应的时隙，UE B使用或考虑自身的感知结果。
在一些实施例中，在第一终端设备和第二终端设备之间的距离大于第一门限值、或者第一终端设备和第二终端设备不位于同一区域或相邻区域的情况下，第二终端设备排除所述第二时隙的全部候选资源。
例如，如果UE A与UE B的距离较远，或者UE A与UE B不在相同或相邻的区域之内，则UE A的实际感知结果可能与UE B不相同。对应于UE B的未监听时隙，即使UE A可能进行了检测，UE B也不相信UE A的感知结果。
图6是本申请实施例的进行资源排除的另一示例图，如图6所示，UE A和UE B 处于不同区域，则UE B进行资源选择或重选时，对于未监听时隙301对应的时隙302和303，UE B排除这两个时隙302和303的全部候选资源。
例如，如图6所示，如果UE A上报的资源集合为推荐资源(例如默认为推荐资源或者标记为推荐资源)，即使UE A上报的资源集合中包括时隙302中的资源601、602以及时隙303中的资源603，UE B也不会考虑这些资源。
再例如，如果UE A上报的资源集合为不推荐资源(例如默认为不推荐资源或者标记为不推荐资源)，UE A上报的资源集合中包括时隙302中的资源601、602以及时隙303中的资源603，UE B仍会排除这两个时隙302和303的全部候选资源。
进一步地，UE B在资源选择/重选/重评估/抢占检测过程对应的资源排除步骤中，对于UE A上报的资源集合，可以不考虑其中包含的UE B的一个或多个未监听时隙对应的时隙内资源或预留该对应时隙内资源的预留信息，而只考虑其它时隙的资源或资源预留信息。
例如，对于图6中选择窗的候选资源，UE B对于时隙302和303不考虑来自UE A的资源集合。例如，如图6所示，UE A上报的资源集合中还包括其他时隙中的资源604，UE B考虑这些资源604。
即，如果UE A与UE B的距离较远，或者UE A与UE B在不同区域，则对于其他时隙的候选资源，UE B按照UE A的感知结果进行资源排除。针对UE B未监听时隙对应的时隙，UE B不使用或不考虑UE A上报的资源集合(即不相信UE A的感知结果)；针对UE B已检测时隙对应的时隙，UE B使用或考虑UE A上报的资源集合(即相信UE A的感知结果)。
以上示意性说明了根据距离或位置进行资源排除，以下再示意性说明根据信号强度或资源集合(辅助信息)进行资源排除。
在一些实施例中，第二终端设备根据所述资源集合(辅助信息)或者来自第一终端设备的边链路控制信息或其他信号，确定第一终端设备的信号强度(RSRP)是否大于或等于第二门限值。
例如，UE B对UE A的RSRP测量结果是UE B感知到的UE A发送的PSCCH或PSSCH对应的DMRS的RSRP测量结果；再例如，还可以是UE B感知到的UE A发送资源集合的PSCCH或PSSCH对应的DMRS的测量结果。
在一些实施例中，在所述资源集合中包括第二时隙的资源或者对应的预留信息的 情况下，根据所述信号强度(RSRP)是否大于或等于第二门限值来确定所述第二时隙的候选资源是否被排除。
例如，在所述信号强度(RSRP)大于或等于第二门限值、且所述资源集合(辅助信息)中包括所述第二时隙的资源或者对应的预留信息的情况下，第二终端设备不排除第二时隙的全部候选资源，而根据所述资源集合对所述第二时隙的候选资源进行资源排除。再例如，在所述信号强度(RSRP)小于门限值的情况下，第二终端设备排除所述第二时隙的全部候选资源。
即，与距离或位置类似地，可以将信号强度(RSRP)作为判断第一终端设备和第二终端设备之间关系的判断条件。关于第二终端设备具体如何进行资源排除，例如还可以参考图5、6所示的内容。
在一些实施例中，第二终端设备确定自身检测的资源和来自第一终端设备的资源集合(辅助信息)是否相同或相近。
例如，第二终端设备在自身检测的资源中和来自第一终端设备的资源集合中、除了所述第二时隙外的其他时隙的资源或者对应的预留信息均相同的情况下，确定自身检测的资源和来自第一终端设备的资源集合相同。
再例如，第二终端设备在自身检测的资源中和来自第一终端设备的资源集合中、除了所述第二时隙外的其他时隙的资源或者对应的预留信息相同的资源个数比例大于第三门限值的情况下，确定自身检测的资源和来自第一终端设备的资源集合相近。
再例如，第二终端设备在自身检测的资源中和来自第一终端设备的资源集合中，对于同一边链路控制信息(SCI)所预留资源的信号强度(RSRP)的差值小于或等于第四门限值的情况下，确定自身检测的资源和来自第一终端设备的资源集合相近。
在一些实施例中，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，第二终端设备根据自身检测的资源和来自第一终端设备的资源集合是否相同或相近，来确定所述第二时隙的候选资源是否被排除。
例如，在自身检测的资源和来自第一终端设备的资源集合相同或相近、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，第二终端设备不排除所述第二时隙的全部候选资源，而根据所述资源集合对所述第二时隙的候选资源进行资源排除。再例如，在自身检测的资源集合和来自第一终端设备的资源集合相同或相近的情况下，第二终端设备排除所述第二时隙中的全部候选资源。
即，与距离或位置类似地，可以将资源集合(辅助信息)作为判断第一终端设备和第二终端设备之间关系的判断条件。关于第二终端设备具体如何进行资源排除，例如还可以参考图5、6所示的内容。
以上以第一终端设备和第二终端设备为例进行了说明。本申请的各实施例可以扩展为多个终端设备上报资源集合的场景。例如，对于一个UE B未监听时隙的对应时隙，至少有一个A1,A2,A3…中的一个终端设备上报的资源集合中包含这个时隙内的资源或该时隙内资源的预留信息，且该终端设备与UE B之间满足上述条件之一或任意组合，则UE B的选择窗中的对应时隙就可以不被排除。
以下再对资源集合(辅助信息)中的资源进行进一步说明。
在一些实施例中，与第二终端设备在所述感知时间段中检测的第三时隙所对应的所述选择时间段中的第四时隙的资源重叠的候选资源为第一类资源，与所述资源集合中所包括的所述第二时隙的资源重叠的候选资源为第二类资源，与第二终端设备在所述感知时间段中检测的第三时隙所对应的所述选择时间段中的第四时隙的资源以及所述资源集合中所包括的所述第二时隙的资源均不重叠的候选资源为第三类资源；
第二终端设备在进行资源选择或重选时，可优先选择第一类资源和/或第三类资源。
例如，对于除了未监听时隙对应的时隙内的资源或预留该对应时隙内资源的预留信息指示的资源之外的其它资源，如果对应的RSRP小于门限，则UE B可以优先把与这些其他资源重叠(overlap)的候选资源包含在候选资源集合中。再例如，UE B优先将第三类资源包含在候选资源集合中。
例如，如果当前选择窗内已经能够满足X％的要求，则不需要包含与未监听时隙对应的时隙内资源或预留该对应时隙内资源的预留信息指示的资源重叠的候选资源；否则，才可以包含与这些资源重叠的候选资源。
在一些实施例中，第二终端设备在进行资源选择或重选时，在候选资源集合中的候选资源个数与选择窗内所有候选资源个数的比例没有达到要求的情况下，可以增加第一类资源的信号强度(RSRP)门限值并继续进行资源选择或重选。
在一些实施例中，第二终端设备在候选资源集合中的候选资源个数与选择窗内所有候选资源个数的比例仍没有达到要求的情况下，增加第二类资源的RSRP门限值并继续进行资源选择或重选。
图7是本申请实施例的候选资源的一示例图。如图7所示，例如如果不满足X％的需求，则UE B对于第一类资源，优先执行门限+3dB处理，如果满足了X％要求，则将候选资源集合上报给MAC层；否则，对第二类资源优先执行门限+3dB处理，以此类推，直到满足X％要求。
由此，UE B优先考虑其本身的感知结果，对于未监听时隙对应时隙内的资源，由于UE B未检测而是由UE A上报的，UE B出于结果不是其本身获得、需要谨慎使用的考虑，优先级低于其本身感知结果对应的资源。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，第二终端设备在进行资源选择或重选时，根据与第一终端设备的距离或第一终端设备的位置、或者来自第一终端设备的信号的强度、或者来自第一终端设备的资源集合，来确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。由此，能够在一定程度上避免资源过度排除，减小碰撞概率以及信道拥塞情况产生的可能性，从而提高系统性能。
第二方面的实施例
本申请实施例提供一种资源指示方法，从第一终端设备进行说明。其中第一终端设备可以向第二终端设备发送资源集合(参见第一方面实施例的说明)，与第一方面的实施例相同的内容不再赘述。
图8是本申请实施例的资源指示方法的一示意图，如图8所示，该方法包括：
801，第一终端设备确定所述第一终端设备和第二终端设备之间的距离、或者所述第二终端的位置、或者所述第二终端设备的信号强度(RSRP)；以及
802，所述第一终端根据所述距离或位置或者所述信号强度向第二终端设备发送资源集合，所述资源集合至少被所述第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
值得注意的是，以上附图8仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操 作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图8的记载。
在本申请实施例中，第一终端设备向第二终端设备发送资源集合，该资源集合被第二终端设备用于进行资源选择/资源排除；此外，该资源集合还至少被所述第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
在一些实施例中，所述资源集合中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
例如，UE A通过感知可以知道UE B在哪些时隙进行边链路发送，可以将UE A自身感知到的对应时隙的感知结果发送给UE B。由于UE A和UE B距离比较近，对于UE A检测到的时隙，二者的感知结果很大概率相同，所以UE A可以只上报UE A已检测但UE B未监听时隙对应的资源预留情况，作为UE B感知结果的补充即可。这样可以减小进行资源上报带来的开销。
在一些实施例中，第一终端设备确定第一终端设备和第二终端设备之间的距离是否小于或等于第一门限值，或者确定第一终端设备和第二终端设备是否位于同一区域或相邻区域。
在一些实施例中，第一终端设备在第一终端设备和第二终端设备之间的距离小于或等于第一门限值、或者第一终端设备和第二终端设备位于同一区域或相邻区域的情况下，在资源集合(辅助信息)中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
在一些实施例中，第一终端设备在第二终端设备的信号强度(RSRP)大于或等于门限值的情况下，在资源集合(辅助信息)中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
在一些实施例中，所述资源集合中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
例如，由于UE A和UE B距离比较远，二者的感知结果很大概率不同，所以UE A只上报UE B已检测时隙对应的资源预留情况，作为UE B感知结果的补充即可。这样可以减小进行资源上报带来的开销。
在一些实施例中，第一终端设备在第一终端设备和第二终端设备之间的距离大于 第一门限值、或者第一终端设备和第二终端设备不位于同一区域或相邻区域的情况下，在资源集合(辅助信息)中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
在一些实施例中，第一终端设备在第二终端设备的信号强度(RSRP)小于或等于第二门限值的情况下，在资源集合(辅助信息)中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
以上对于辅助信息的内容进行了示意性说明，以下再对辅助信息的触发进行说明。
在一些实施例中，在第一终端设备和第二终端设备之间的距离小于或等于门限值、或者第一终端设备和第二终端设备位于同一区域或相邻区域的情况下，第一终端设备被触发向第二终端设备发送所述资源集合。
在一些实施例中，在接收到第二终端设备发送的触发信令的情况下，第一终端设备被触发向第二终端设备发送所述资源集合。
在一些实施例中，在检测到所述第二时隙的资源预留信息的情况下，第一终端设备被触发向第二终端设备发送所述资源集合。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，第一终端根据距离或位置或者信号强度向第二终端设备发送资源集合，所述资源集合被第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。由此，能够在一定程度上避免资源过度排除，减小碰撞概率以及信道拥塞情况产生的可能性，从而提高系统性能。
第三方面的实施例
本申请实施例提供一种资源选择装置。该装置例如可以是终端设备(例如前述的第二终端设备)，也可以是配置于终端设备的某个或某些部件或者组件，与第一方面的实施例相同的内容不再赘述。
图9是本申请实施例的资源选择装置的一示意图。如图9所示，资源选择装置900包括：
确定单元901，其确定第一终端设备和第二终端设备之间的距离、或者所述第一 终端设备的位置、或者所述第一终端设备的信号强度；
接收单元902，其接收来自所述第一终端设备的资源集合；以及
选择单元903，其在进行资源选择或重选时，根据所述距离或位置、或者所述信号强度、或者所述资源集合确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
在一些实施例中，确定单元901根据来自所述第一终端设备的边链路控制信息中的位置信息或区域标识来确定所述第一终端设备和所述第二终端设备之间的距离是否小于或等于第一门限值，或者确定所述第一终端设备和所述第二终端设备是否位于同一区域或相邻区域。
例如，确定单元901在所述第二终端设备的位置与所述边链路控制信息中的所述位置信息所指示的最近区域的中心位置之间的距离小于或等于预定距离或者所述边链路控制信息中的通信范围要求的情况下，确定所述第一终端设备和所述第二终端设备之间的距离小于或等于所述第一门限值。
再例如，确定单元901在所述第二终端设备的区域标识与所述边链路控制信息中的所述区域标识所指示的区域相同或相近的情况下，确定所述第一终端设备和所述第二终端设备位于同一区域或相邻区域。
在一些实施例中，确定单元901根据所述资源集合中的位置信息或区域标识来确定所述第一终端设备和所述第二终端设备之间的距离是否小于或等于第一门限值，或者确定所述第一终端设备和所述第二终端设备是否位于同一区域或相邻区域。
例如，确定单元901在所述第二终端设备的位置与所述资源集合中的所述位置信息所指示的最近区域的中心位置之间的距离小于或等于预定距离或所述边链路控制信息中的通信范围要求的情况下，确定所述第一终端设备和所述第二终端设备之间的距离小于或等于所述第一门限值。
再例如，确定单元901在所述第二终端设备的区域标识与所述资源集合中的所述区域标识所指示的区域相同或相近的情况下，确定所述第一终端设备和所述第二终端设备位于同一区域或相邻区域。
在一些实施例中，选择单元903在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据所述第一终端设备和所述第二终端设备之间的距离是否小于或等于第一门限值或者所述第一终端设备和所述第二终端设备是否位于同一 区域或相邻区域，来确定所述第二时隙的候选资源是否被排除。
例如，选择单元903在所述第一终端设备和所述第二终端设备之间的距离小于或等于所述第一门限值或者所述第一终端设备和所述第二终端设备位于同一区域或相邻区域、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，不对所述第二时隙的全部候选资源进行排除、而根据所述资源集合对所述第二时隙的候选资源进行资源排除。
再例如，选择单元903在所述第一终端设备和所述第二终端设备之间的距离大于所述第一门限值或者所述第一终端设备和所述第二终端设备不位于同一区域或相邻区域的情况下，排除所述第二时隙的全部候选资源。
在一些实施例中，确定单元901还用于根据所述资源集合或者来自所述第一终端设备的边链路控制信息或其他信号，确定所述第一终端设备的信号强度是否大于或等于第二门限值。
在一些实施例中，选择单元903在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据所述信号强度是否大于或等于所述第二门限值，来确定所述第二时隙的候选资源是否被排除。
例如，选择单元903在所述信号强度大于或等于所述第二门限值、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，不对所述第二时隙的全部候选资源进行排除、而根据所述资源集合对所述第二时隙的候选资源进行资源排除。
再例如，选择单元903在所述信号强度(RSRP)小于所述第二门限值的情况下，排除所述第二时隙的全部候选资源。
在一些实施例中，确定单元901还用于确定所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合是否相同或相近。
例如，确定单元901在所述第二终端设备检测的资源中和来自所述第一终端设备的所述资源集合中、除了所述第二时隙外的其他时隙的资源或者对应的预留信息均相同的情况下，确定所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合相同。
再例如，确定单元901在所述第二终端设备检测的资源中和来自所述第一终端设备的所述资源集合中、除了所述第二时隙外的其他时隙的资源或者对应的预留信息相同的资源个数比例大于第三门限值的情况下，确定所述第二终端设备检测的资源和来 自所述第一终端设备的所述资源集合相近。
再例如，确定单元901在所述第二终端设备检测的资源中和来自所述第一终端设备的所述资源集合中，对于同一边链路信息所预留资源的信号强度(RSRP)的差值小于或等于第四门限值的情况下，确定所述第二终端设备检测的资源集合和来自所述第一终端设备的所述资源集合相近。
在一些实施例中，选择单元903在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合是否相同或相近，来确定所述第二时隙的候选资源是否被排除。
例如，选择单元903在所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合相同或相近、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，不对所述第二时隙的全部候选资源进行排除、而根据所述资源集合对所述第二时隙的候选资源进行资源排除。
再例如，选择单元903在所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合不是相同或相近的情况下，排除所述第二时隙中的全部候选资源。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限于此。资源选择装置900还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图9中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现；本申请实施并不对此进行限制。
由上述实施例可知，第二终端设备在进行资源选择或重选时，根据与第一终端设备的距离或第一终端设备的位置、或者来自第一终端设备的信号的强度、或者来自第一终端设备的资源集合，来确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。由此，能够在一定程度上避免资源过度排除，减小碰撞概率以及信道拥塞情况产生的可能性，从而提高系统性 能。
第四方面的实施例
本申请实施例提供一种资源指示装置。该装置例如可以是终端设备(例如前述的第一终端设备)，也可以是配置于终端设备的某个或某些部件或者组件，与第二方面的实施例相同的内容不再赘述。
图10是本申请实施例的资源指示装置的一示意图。如图10所示，资源指示装置1000包括：
确定单元1001，其确定所述第一终端设备和第二终端设备之间的距离、或者所述第二终端的位置、或者所述第二终端设备的信号强度；以及
发送单元1002，其根据所述距离或位置或者所述信号强度向第二终端设备发送资源集合，所述资源集合被所述第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
在一些实施例中，发送单元1002在所述第一终端设备和第二终端设备之间的距离小于或等于第一门限值、或者所述第一终端设备和所述第二终端设备位于同一区域或相邻区域的情况下，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
在一些实施例中，发送单元1002在所述第二终端设备的信号强度大于或等于第二门限值的情况下，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
在一些实施例中，发送单元1002在所述第一终端设备和第二终端设备之间的距离大于第一门限值、或者所述第一终端设备和所述第二终端设备不位于同一区域或相邻区域的情况下，在所述资源集合中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
在一些实施例中，发送单元1002在所述第二终端设备的信号强度小于或等于第二门限值的情况下，在所述资源集合中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例， 也可以将以上各个实施例中的一种或多种结合起来。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限于此。资源指示装置1000还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图10中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现；本申请实施并不对此进行限制。
由上述实施例可知，第一终端根据距离或位置或者信号强度向第二终端设备发送资源集合，所述资源集合被第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。由此，能够在一定程度上避免资源过度排除，减小碰撞概率以及信道拥塞情况产生的可能性，从而提高系统性能。
第五方面的实施例
本申请实施例还提供一种通信系统，可以参考图1，与第一方面至第四方面的实施例相同的内容不再赘述。
在一些实施例中，通信系统100至少可以包括：
第一终端设备102，其确定所述第一终端设备和第二终端设备之间的距离、或者所述第二终端的位置、或者所述第二终端设备的信号强度；以及根据所述第一终端设备和第二终端设备之间的距离或所述第二终端的位置或者所述第二终端设备的信号强度向所述第二终端设备发送资源集合；
第二终端设备103，确定所述第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度；接收来自所述第一终端设备的所述资源集合；以及在进行资源选择或重选时，根据所述第一终端设备和所述第二终端设备之间的距离或所述第一终端设备的位置、或者所述第一终端设备的信号强度、或者所述资源集合，确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
本申请实施例还提供一种网络设备，例如可以是基站，但本申请不限于此，还可以是其他的网络设备。
图11是本申请实施例的网络设备的构成示意图。如图11所示，网络设备1100可以包括：处理器1110(例如中央处理器CPU)和存储器1120；存储器1120耦合到处理器1110。其中该存储器1120可存储各种数据；此外还存储信息处理的程序1130，并且在处理器1110的控制下执行该程序1130。
此外，如图11所示，网络设备1100还可以包括：收发机1140和天线1150等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备1100也并不是必须要包括图11中所示的所有部件；此外，网络设备1100还可以包括图11中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种终端设备，但本申请不限于此，还可以是其他的设备。
图12是本申请实施例的终端设备的示意图。如图12所示，该终端设备1200可以包括处理器1210和存储器1220；存储器1220存储有数据和程序，并耦合到处理器1210。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
例如，处理器1210可以被配置为执行程序而实现如第一方面的实施例所述的资源选择方法。例如处理器1210可以被配置为进行如下的控制：确定第一终端设备和第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度(RSRP)；接收来自所述第一终端设备的资源集合；以及在进行资源选择或重选时，根据所述距离或位置、或者所述信号强度、或者所述资源集合确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
再例如，处理器1210可以被配置为执行程序而实现如第二方面的实施例所述的资源指示方法。例如处理器1210可以被配置为进行如下的控制：确定第一终端设备和第二终端设备之间的距离、或者所述第二终端的位置、或者所述第二终端设备的信号强度；以及根据所述距离或位置或者所述信号强度向第二终端设备发送资源集合，所述资源集合被所述第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
如图12所示，该终端设备1200还可以包括：通信模块1230、输入单元1240、显示器1250、电源1260。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，终端设备1200也并不是必须要包括图12中所示的所有部件，上述部 件并不是必需的；此外，终端设备1200还可以包括图12中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种计算机程序，其中当在终端设备中执行所述程序时，所述程序使得所述终端设备执行第一方面的实施例所述的资源选择方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第一方面的实施例所述的资源选择方法。
本申请实施例还提供一种计算机程序，其中当在终端设备中执行所述程序时，所述程序使得所述终端设备执行第二方面的实施例所述的资源指示方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第二方面的实施例所述的资源指示方法。
本申请以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本申请涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本申请还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本申请实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图中所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合， 可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本申请进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本申请保护范围的限制。本领域技术人员可以根据本申请的精神和原理对本申请做出各种变型和修改，这些变型和修改也在本申请的范围内。
关于包括以上实施例的实施方式，还公开下述的附记：
附记1.一种资源选择方法，包括：
第二终端设备确定第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度(RSRP)；
所述第二终端设备接收来自所述第一终端设备的资源集合；以及
所述第二终端设备在进行资源选择或重选时，根据所述距离或位置、或者所述信号强度、或者所述资源集合确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
附记2.根据附记1所述的方法，其中，所述第二终端设备根据来自所述第一终端设备的边链路控制信息中的位置信息或区域标识来确定所述第一终端设备和所述第二终端设备之间的距离是否小于或等于第一门限值，或者确定所述第一终端设备和所述第二终端设备是否位于同一区域或相邻区域。
附记3.根据附记2所述的方法，其中，所述第二终端设备在自身位置与所述边链路控制信息中的所述位置信息所指示的最近区域的中心位置之间的距离小于或等于预定距离或者所述边链路控制信息中的通信范围要求的情况下，确定所述第一终端设备和所述第二终端设备之间的距离小于或等于所述第一门限值。
附记4.根据附记2所述的方法，其中，所述第二终端设备在自身区域标识与所述边链路控制信息中的所述区域标识所指示的区域相同或相近的情况下，确定所述第一终端设备和所述第二终端设备位于同一区域或相邻区域。
附记5.根据附记1所述的方法，其中，所述第二终端设备根据所述资源集合中的位置信息或区域标识来确定所述第一终端设备和所述第二终端设备之间的距离是否小于或等于第一门限值，或者确定所述第一终端设备和所述第二终端设备是否位于同一区域或相邻区域。
附记6.根据附记5所述的方法，其中，所述第二终端设备在自身位置与所述资源集合中的所述位置信息所指示的最近区域的中心位置之间的距离小于或等于预定距离或所述边链路控制信息中的通信范围要求的情况下，确定所述第一终端设备和所述第二终端设备之间的距离小于或等于所述第一门限值。
附记7.根据附记5所述的方法，其中，所述第二终端设备在自身区域标识与所述资源集合中的所述区域标识所指示的区域相同或相近的情况下，确定所述第一终端设备和所述第二终端设备位于同一区域或相邻区域。
附记8.根据附记1至7任一项所述的方法，其中，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据所述第一终端设备和所述第二终端设备之间的距离是否小于或等于第一门限值或者所述第一终端设备和所述第二终端设备是否位于同一区域或相邻区域，来确定所述第二时隙的候选资源是否被排除。
附记9.根据附记8所述的方法，其中，在所述距离小于或等于所述第一门限值或者所述第一终端设备和所述第二终端设备位于同一区域或相邻区域、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，所述第二终端设备不对所述第二时隙的全部候选资源进行排除、而根据所述资源集合对所述第二时隙的候选资源进行资源排除。
附记10.根据附记8所述的方法，其中，在所述距离大于所述第一门限值或者所述第一终端设备和所述第二终端设备不位于同一区域或相邻区域的情况下，所述第二终端设备排除所述第二时隙的全部候选资源。
附记11.根据附记1所述的方法，其中，所述方法还包括：
所述第二终端设备根据所述资源集合或者来自所述第一终端设备的边链路控制信息或其他信号，确定所述第一终端设备的信号强度(RSRP)是否大于或等于第二门限值。
附记12.根据附记11所述的方法，其中，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据所述信号强度(RSRP)是否大于或等于 所述第二门限值，来确定所述第二时隙的候选资源是否被排除。
附记13.根据附记11所述的方法，其中，在所述信号强度(RSRP)大于或等于所述第二门限值、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，所述第二终端设备不对所述第二时隙的全部候选资源进行排除、而根据所述资源集合对所述第二时隙的候选资源进行资源排除。
附记14.根据附记11所述的方法，其中，在所述信号强度(RSRP)小于所述第二门限值的情况下，所述第二终端设备排除所述第二时隙的全部候选资源。
附记15.根据附记1所述的方法，其中，所述方法还包括：
所述第二终端设备确定自身检测的资源和来自所述第一终端设备的所述资源集合是否相同或相近。
附记16.根据附记15所述的方法，其中，所述第二终端设备在所述自身检测的资源中和来自所述第一终端设备的所述资源集合中、除了所述第二时隙外的其他时隙的资源或者对应的预留信息均相同的情况下，确定自身检测的资源和来自所述第一终端设备的所述资源集合相同。
附记17.根据附记15所述的方法，其中，所述第二终端设备在所述自身检测的资源中和来自所述第一终端设备的所述资源集合中、除了所述第二时隙外的其他时隙的资源或者对应的预留信息相同的资源个数比例大于第三门限值的情况下，确定自身检测的资源和来自所述第一终端设备的所述资源集合相近。
附记18.根据附记15所述的方法，其中，所述第二终端设备在所述自身检测的资源中和来自所述第一终端设备的所述资源集合中，对于同一边链路信息所预留资源的信号强度(RSRP)的差值小于或等于第四门限值的情况下，确定自身检测的资源集合和来自所述第一终端设备的所述资源集合相近。
附记19.根据附记15所述的方法，其中，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据自身检测的资源和来自所述第一终端设备的所述资源集合是否相同或相近，来确定所述第二时隙的候选资源是否被排除。
附记20.根据附记15所述的方法，其中，在自身检测的资源和来自所述第一终端设备的所述资源集合相同或相近、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，所述第二终端设备不对所述第二时隙的全部候选资源进行排除、而根据所述资源集合对所述第二时隙的候选资源进行资源排除。
附记21.根据附记15所述的方法，其中，在自身检测的资源和来自所述第一终端设备的所述资源集合不是相同或相近的情况下，所述第二终端设备排除所述第二时隙中的全部候选资源。
附记22.根据附记1至21任一项所述的方法，其中，与所述第二终端设备在所述感知时间段中监听的第三时隙所对应的所述选择时间段中的第四时隙的资源重叠的候选资源为第一类资源，与所述资源集合中所包括的所述第二时隙的资源重叠的候选资源为第二类资源；与第二终端设备在所述感知时间段中检测的第三时隙所对应的所述选择时间段中的第四时隙的资源以及所述资源集合中所包括的所述第二时隙的资源均不重叠的候选资源为第三类资源；
所述第二终端设备在进行资源选择或重选时，优先选择所述第一类资源和/或第三类资源。
附记23.根据附记22所述的方法，其中，所述方法还包括：
所述第二终端设备在候选资源集合中的候选资源个数与选择窗内所有候选资源个数的比例没有达到要求的情况下，增加所述第一类资源的RSRP门限值并继续进行资源选择或重选。
附记24.根据附记23所述的方法，其中，所述方法还包括：
所述第二终端设备在候选资源集合中的候选资源个数与选择窗内所有候选资源个数的比例仍没有达到要求的情况下，增加所述第二类资源的RSRP门限值并继续进行资源选择或重选。
附记25.一种资源指示方法，包括：
第一终端设备确定所述第一终端设备和第二终端设备之间的距离、或者所述第二终端的位置、或者所述第二终端设备的信号强度(RSRP)；以及
所述第一终端根据所述距离或位置或者所述信号强度向第二终端设备发送资源集合，所述资源集合被所述第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
附记26.根据附记25所述的方法，其中，所述资源集合中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
附记27.根据附记25或26所述的方法，其中，所述方法还包括：
所述第一终端设备确定所述第一终端设备和所述第二终端设备之间的距离是否 小于或等于第一门限值，或者确定所述第一终端设备和所述第二终端设备是否位于同一区域或相邻区域。
附记28.根据附记27所述的方法，其中，所述方法还包括：
所述第一终端设备在所述距离小于或等于所述第一门限值、或者所述第一终端设备和所述第二终端设备位于同一区域或相邻区域的情况下，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
附记29.根据附记25或26所述的方法，其中，所述方法还包括：
所述第一终端设备在所述第二终端设备的信号强度(RSRP)大于或等于第二门限值的情况下，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
附记30.根据附记25所述的方法，其中，所述资源集合中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
附记31.根据附记25或27所述的方法，其中，所述方法还包括：
所述第一终端设备在所述距离大于所述第一门限值、或者所述第一终端设备和所述第二终端设备不位于同一区域或相邻区域的情况下，在所述资源集合中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
附记32.根据附记25或29所述的方法，其中，所述方法还包括：
所述第一终端设备在所述第二终端设备的信号强度(RSRP)小于所述第二门限值的情况下，在所述资源集合中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
附记33.根据附记25至32任一项所述的方法，其中，在所述第一终端设备和所述第二终端设备之间的距离小于或等于第一门限值、或者所述第一终端设备和所述第二终端设备位于同一区域或相邻区域的情况下，所述第一终端设备被触发向所述第二终端设备发送所述资源集合。
附记34.根据附记25至32任一项所述的方法，其中，在接收到所述第二终端设备发送的触发信令的情况下，所述第一终端设备被触发向所述第二终端设备发送所述资源集合。
附记35.根据附记25至32任一项所述的方法，其中，在检测到所述第二时隙 的资源预留信息的情况下，所述第一终端设备被触发向所述第二终端设备发送所述资源集合。
附记36.一种资源选择方法，包括：
第二终端设备接收第一终端设备发送的资源集合；以及
所述第二终端设备在进行资源选择或重选时，根据所述资源集合确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
附记37.根据附记36所述的方法，其中，所述方法还包括：
所述第二终端设备确定第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度(RSRP)；以及
在所述资源集合中包括所述第二时隙的资源或者对应的预留信息，根据所述距离小于或等于第一门限值、或者所述第一终端设备和所述第二终端设备位于同一区域或相邻区域、或者所述信号强度大于或等于第二门限值、或者自身检测的资源集合和来自所述第一终端设备的所述资源集合相同或相近，来确定所述第二时隙的候选资源是否被排除。
附记38.一种资源指示方法，包括：
第一终端设备进行资源感知并生成资源集合；以及
所述第一终端设备向所述第二终端设备发送资源集合，所述资源集合被所述第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
附记39.一种终端设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器被配置为执行所述计算机程序而实现如附记25至35、38任一项所述的资源指示方法，或者被配置为执行所述计算机程序而实现如附记1至24、36至37任一项所述的资源选择方法。

Claims (20)

  1. 一种资源选择装置，配置于第二终端设备，所述装置包括：
    确定单元，其确定第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度；
    接收单元，其接收来自所述第一终端设备的资源集合；以及
    选择单元，其在进行资源选择或重选时，根据所述距离或位置、或者所述信号强度、或者所述资源集合确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
  2. 根据权利要求1所述的装置，其中，所述确定单元根据来自所述第一终端设备的边链路控制信息中的位置信息或区域标识来确定所述第一终端设备和所述第二终端设备之间的距离是否小于或等于第一门限值，或者确定所述第一终端设备和所述第二终端设备是否位于同一区域或相邻区域。
  3. 根据权利要求2所述的装置，其中，所述确定单元在所述第二终端设备的位置与所述边链路控制信息中的所述位置信息或区域标识所指示的最近区域的中心位置之间的距离小于或等于预定距离或者所述边链路控制信息中的通信范围要求的情况下，确定所述第一终端设备和所述第二终端设备之间的距离小于或等于所述第一门限值；
    或者，所述确定单元在所述第二终端设备的区域标识与所述边链路控制信息中的所述区域标识所指示的区域相同或相近的情况下，确定所述第一终端设备和所述第二终端设备位于同一区域或相邻区域。
  4. 根据权利要求1所述的装置，其中，所述确定单元根据所述资源集合中的位置信息或区域标识来确定所述第一终端设备和所述第二终端设备之间的距离是否小于或等于第一门限值，或者确定所述第一终端设备和所述第二终端设备是否位于同一区域或相邻区域。
  5. 根据权利要求4所述的装置，其中，所述确定单元在所述第二终端设备的位置与所述资源集合中的所述位置信息或区域标识所指示的最近区域的中心位置之间的距离小于或等于预定距离或边链路控制信息中的通信范围要求的情况下，确定所述第一终端设备和所述第二终端设备之间的距离小于或等于所述第一门限值；
    或者，所述确定单元在所述第二终端设备的区域标识与所述资源集合中的所述区域标识所指示的区域相同或相近的情况下，确定所述第一终端设备和所述第二终端设备位于同一区域或相邻区域。
  6. 根据权利要求1所述的装置，其中，所述选择单元在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据所述第一终端设备和所述第二终端设备之间的距离是否小于或等于第一门限值或者所述第一终端设备和所述第二终端设备是否位于同一区域或相邻区域，来确定所述第二时隙的候选资源是否被排除。
  7. 根据权利要求6所述的装置，其中，所述选择单元在所述第一终端设备和所述第二终端设备之间的距离小于或等于所述第一门限值或者所述第一终端设备和所述第二终端设备位于同一区域或相邻区域、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，不对所述第二时隙的全部候选资源进行排除、而根据所述资源集合对所述第二时隙的候选资源进行资源排除；
    在所述第一终端设备和所述第二终端设备之间的距离大于所述第一门限值或者所述第一终端设备和所述第二终端设备不位于同一区域或相邻区域的情况下，排除所述第二时隙的全部候选资源。
  8. 根据权利要求1所述的装置，其中，所述确定单元还用于根据所述资源集合或者来自所述第一终端设备的边链路控制信息或其他信号，确定所述第一终端设备的信号强度是否大于或等于第二门限值。
  9. 根据权利要求8所述的装置，其中，所述选择单元在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据所述信号强度是否大于或等于所述第二门限值，来确定所述第二时隙的候选资源是否被排除。
  10. 根据权利要求9所述的装置，其中，所述选择单元在所述信号强度大于或等于所述第二门限值、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，不对所述第二时隙的全部候选资源进行排除、而根据所述资源集合对所述第二时隙的候选资源进行资源排除；
    在所述信号强度小于所述第二门限值的情况下，排除所述第二时隙的全部候选资源。
  11. 根据权利要求1所述的装置，其中，所述确定单元还用于确定所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合是否相同或相近。
  12. 根据权利要求11所述的装置，其中，所述确定单元在所述第二终端设备检测的资源中和来自所述第一终端设备的所述资源集合中、除了所述第二时隙外的其他时隙的资源或者对应的预留信息均相同的情况下，确定所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合相同；
    或者，所述确定单元在所述第二终端设备检测的资源中和来自所述第一终端设备的所述资源集合中、除了所述第二时隙外的其他时隙的资源或者对应的预留信息相同的资源个数比例大于第三门限值的情况下，确定所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合相近；
    或者，所述确定单元在所述第二终端设备检测的资源中和来自所述第一终端设备的所述资源集合中，对于同一边链路信息所预留资源的信号强度的差值小于或等于第四门限值的情况下，确定所述第二终端设备检测的资源集合和来自所述第一终端设备的所述资源集合相近。
  13. 根据权利要求11所述的装置，其中，所述选择单元在所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，根据所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合是否相同或相近，来确定所述第二时隙的候选资源是否被排除。
  14. 根据权利要求13所述的装置，其中，所述选择单元在所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合相同或相近、且所述资源集合中包括所述第二时隙的资源或者对应的预留信息的情况下，不对所述第二时隙的全部候选资源进行排除、而根据所述资源集合对所述第二时隙的候选资源进行资源排除；
    在所述第二终端设备检测的资源和来自所述第一终端设备的所述资源集合不是相同或相近的情况下，排除所述第二时隙中的全部候选资源。
  15. 一种资源指示装置，配置于第一终端设备，所述装置包括：
    确定单元，其确定所述第一终端设备和第二终端设备之间的距离、或者所述第二终端的位置、或者所述第二终端设备的信号强度；以及
    发送单元，其根据所述距离或位置或者所述信号强度向第二终端设备发送资源集合，所述资源集合至少被所述第二终端设备用于确定感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
  16. 根据权利要求15所述的装置，其中，所述发送单元在所述第一终端设备和 第二终端设备之间的距离小于或等于第一门限值、或者所述第一终端设备和所述第二终端设备位于同一区域或相邻区域的情况下，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
  17. 根据权利要求15所述的装置，其中，所述发送单元在所述第二终端设备的信号强度大于或等于第二门限值的情况下，在所述资源集合中包括所述第二时隙的资源或者对应的预留信息而不包括其他时隙的资源或者对应的预留信息。
  18. 根据权利要求15所述的装置，其中，所述发送单元在所述第一终端设备和第二终端设备之间的距离大于第一门限值、或者所述第一终端设备和所述第二终端设备不位于同一区域或相邻区域的情况下，在所述资源集合中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
  19. 根据权利要求15所述的装置，其中，所述发送单元在所述第二终端设备的信号强度小于第二门限值的情况下，在所述资源集合中不包括所述第二时隙的资源或者对应的预留信息而包括其他时隙的资源或者对应的预留信息。
  20. 一种通信系统，包括：
    第一终端设备，其确定所述第一终端设备和第二终端设备之间的距离、或者所述第二终端的位置、或者所述第二终端设备的信号强度；以及根据所述第一终端设备和第二终端设备之间的距离或所述第二终端的位置或者所述第二终端设备的信号强度向所述第二终端设备发送资源集合；
    第二终端设备，确定所述第一终端设备和所述第二终端设备之间的距离、或者所述第一终端设备的位置、或者所述第一终端设备的信号强度；接收来自所述第一终端设备的所述资源集合；以及在进行资源选择或重选时，根据所述第一终端设备和所述第二终端设备之间的距离或所述第一终端设备的位置、或者所述第一终端设备的信号强度、或者所述资源集合，确定所述第二终端设备在感知时间段中未监听的第一时隙所对应的选择时间段中的第二时隙的候选资源是否被排除。
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