WO2022082672A1 - 资源选择方法以及装置 - Google Patents

资源选择方法以及装置 Download PDF

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Publication number
WO2022082672A1
WO2022082672A1 PCT/CN2020/122999 CN2020122999W WO2022082672A1 WO 2022082672 A1 WO2022082672 A1 WO 2022082672A1 CN 2020122999 W CN2020122999 W CN 2020122999W WO 2022082672 A1 WO2022082672 A1 WO 2022082672A1
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terminal device
auxiliary information
reference signal
distance
received power
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PCT/CN2020/122999
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English (en)
French (fr)
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张健
纪鹏宇
王昕�
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富士通株式会社
张健
纪鹏宇
王昕�
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Priority to PCT/CN2020/122999 priority Critical patent/WO2022082672A1/zh
Publication of WO2022082672A1 publication Critical patent/WO2022082672A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management

Definitions

  • the embodiments of the present application relate to the field of communication technologies.
  • Vehicle to Everything (V2X, Vehicle to Everything) is a vehicle communication technology. Compared with the cellular communication using the Uu link, the V2X sending device communicates directly with the receiving device through a sidelink.
  • New Radio (NR New Radio) V2X is an important project of 5G Rel-16. Compared with Long Term Evolution (LTE, Long Term Evolution) V2X of Rel-14/Rel-15, NR V2X can support more scenarios and services, and can Meet higher performance demands.
  • the physical channels defined by NR V2X include Physical Sidelink Control Channel (PSCCH, Physical Sidelink Control Channel), Physical Sidelink Shared Channel (PSSCH, Physical Sidelink Shared Channel) and Physical Sidelink Feedback Channel (PSFCH, Physical Sidelink Feedback Channel) ).
  • PSCCH carries 1st stage side link control information (SCI, Sidelink Control Informaiton), and 1st stage SCI is mainly used to reserve resources.
  • PSSCH carries 2nd stage SCI and transport block (TB, Transport Block), of which 2nd stage SCI is mainly used for TB demodulation.
  • the PSFCH carries sidelink feedback information (may be referred to as HARQ-ACK).
  • the resources (time-frequency resources) used for side link transmission are located in a certain resource pool.
  • NR V2X defines two working modes.
  • NR V2X mode 1 (Mode 1)
  • the resources used by the terminal device for V2X communication are scheduled or configured by the network device (base station) through the NR Uu link.
  • NR V2X Mode 2 (Mode 2)
  • the terminal device can autonomously select time-frequency resources for V2X communication based on the sensing results.
  • the terminal device selects and sends resources based on its own sensing result, which can avoid interference or collision between devices to a certain extent. But in some cases, there will still be resource sending collisions. Therefore, as an enhancement to Mode 2 of autonomous resource selection, inter-UE coordination has also become one of the research contents of Rel-17 V2X. The specific way of cooperation between devices is a problem to be studied and solved.
  • embodiments of the present application provide a resource selection method and apparatus.
  • a resource selection method including:
  • the third terminal device receives the first auxiliary information sent by the first terminal device
  • the third terminal device receives the second auxiliary information sent by the second terminal device.
  • the third terminal device receives the power threshold of the first reference signal corresponding to the resource in the first auxiliary information and the second reference signal corresponding to the resource in the second auxiliary information.
  • the power thresholds are updated independently.
  • a resource selection apparatus including:
  • a receiving unit which receives the first auxiliary information sent by the first terminal device; and receives the second auxiliary information sent by the second terminal device;
  • a selection unit which, during resource selection or reselection, sets the received power threshold of the first reference signal corresponding to the resource in the first auxiliary information and the received power threshold of the second reference signal corresponding to the resource in the second auxiliary information Update independently.
  • a communication system including:
  • a first terminal device which sends the first auxiliary information
  • the third terminal device receives the power threshold of the first reference signal corresponding to the resource in the first auxiliary information and the second reference signal corresponding to the resource in the second auxiliary information.
  • the power thresholds are updated independently.
  • One of the beneficial effects of the embodiments of the present application is that: when the third terminal device selects or reselection resources, the first RSRP threshold corresponding to the resource in the first auxiliary information from the first terminal device and the first RSRP threshold from the second terminal device The second RSRP threshold corresponding to the resource in the second auxiliary information is independently updated. In this way, it is possible to take into account the resource selection preferences of different receiving devices, and select the resources for which all receiving devices are subject to less interference for side link transmission, thereby improving the reliability of side link transmission.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is an example diagram of cooperation between devices according to an embodiment of the present application
  • FIG. 3 is another example diagram of cooperation between devices according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a resource selection method according to an embodiment of the present application.
  • FIG. 5 is another example diagram of cooperation between devices according to an embodiment of the present application.
  • FIG. 6 is another schematic diagram of a resource selection method according to an embodiment of the present application.
  • FIG. 7 is an example diagram of a resource indication according to an embodiment of the present application.
  • FIG. 8 is another example diagram of a resource indication 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 network device according to an embodiment of the present application.
  • FIG. 11 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 Packet 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
  • High-Speed Packet Access High-Speed Packet 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, In-vehicle communication terminals, device-to-device (D2D, Device to Device) terminals, machine-to-machine (M2M, Machine to Machine) terminals, 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 may autonomously select side link resources (ie, adopt Mode2), and in this case, the side link transmission may be independent of the network device 101, that is, the network device 101 is optional .
  • the embodiments of the present application may also combine the autonomous selection of side link resources (that is, Mode 2) and the allocation of side link resources (that is, Mode 1) by the network device; this is not limited in the embodiments of the present application.
  • 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
  • the terminal device selects and transmits resources based on its own sensing result, which can avoid interference or collision between devices to a certain extent.
  • the steps for resource selection can be found in subsection 8.1.4 of the standard TS 38.214 V16.2.0.
  • resource collisions still occur.
  • device B sends edge link information to device A, and there is an interference source device I around device A. Since device B cannot perceive device I, the transmission of device B will be interfered by device I; that is, device I can Considered a hidden node.
  • the independent resource selection by the terminal device is one of the reasons for the collision problem and half-duplex problem in Mode 2.
  • the introduction of inter-device collaboration based on Mode 2 can additionally provide terminal devices with information that cannot be obtained by relying on their own perception, thereby further avoiding collision problems and half-duplex problems.
  • inter-device collaboration has also become one of the research contents of the upcoming Rel-17 V2X. Collaboration between devices requires interaction information between devices, which can be called assistance information. Auxiliary information can be used to optimize resource selection.
  • auxiliary information can at least indicate (or include) resource information, that is, indicate a resource set.
  • the auxiliary information may indicate resources that the terminal device does not tend to use (or tend to use) obtained based on perception, resources occupied by the terminal device itself for transmission, and the like.
  • FIG. 2 is an example diagram of cooperation between devices according to an embodiment of the present application, where device 1 is a hidden node.
  • device A can send auxiliary information to device B, the auxiliary information indicating the resources reserved by device I perceived by device A, after receiving the auxiliary information, device B can By avoiding the above-mentioned reserved resources, the aforementioned collision problem can be avoided.
  • the standardization work of Rel-17 V2X has just started, and the specific methods of cooperation between devices, including the content indicated by the auxiliary information, are all issues to be studied and solved.
  • the receiving device can report the severely interfered resource to the sending device, and the sending device can assist the sending device to avoid or exclude the resource during resource selection.
  • the sending device may receive resources reported by multiple receiving devices, and these reported resources may be contradictory to each other, or even to the perception result of the sending device itself. In this case, improper resource selection will result in a huge drop in reliability. How to ensure that the sending device can select resources suitable for multiple receiving devices, and how to coordinate the conflict with the sensing result of the sending device are issues to be studied and solved.
  • FIG. 3 is another example diagram of cooperation between devices according to an embodiment of the present application.
  • device B is going to send side link data to device A and device C, and device B is called a sending device, and device A and device C are called receiving devices;
  • Device B reports auxiliary information.
  • the device reports the sensed reserved resources, wherein the reserved resources will be greatly interfered.
  • Receiving device A is severely interfered with a certain resource (reports the resource to device B, and asks device B to avoid the resource), but receiving device C does not experience any interference on the resource (does not report the resource to device B) , and other resources are reported), that is, the resources reported by device A and device C are contradictory.
  • the resources reported by the device are represented by shading, and other blank resources represent candidate resources. If sending device B excludes all reported resources, that is, excludes the union of resources reported by device A and device C (as shown by the shaded resources of device A ⁇ device C), then the candidate resource set of sending device B is an empty set, which is equivalent to The available resources of device A and device C do not overlap.
  • the sending device B has resources that need to be excluded as determined by its own perception, and these resources may also be contradictory to the reported resources. How to ensure that the sending device can select resources suitable for multiple receiving devices, and how to coordinate the conflict with the sensing result of the sending device are problems to be studied and solved, and the following embodiments will illustrate these problems.
  • 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.
  • This embodiment of the present application provides a resource selection method, which is described from a third terminal device.
  • the third terminal equipment can send side link data to the first terminal equipment and the second terminal equipment, so the third terminal equipment needs to perform resource selection to determine the sending resources of the side link data.
  • the third terminal device in this embodiment of the present application is a transmitting device, and the first terminal device and the second terminal device are receiving devices.
  • the first terminal device and the second terminal device may send assistance information (which may also be referred to as resource information or resource set) to the second terminal device.
  • the auxiliary information 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.
  • the terms “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 third terminal device receives the first auxiliary information sent by the first terminal device
  • the third terminal device receives the second auxiliary information sent by the second terminal device.
  • the third terminal device sets a first reference signal received power (RSRP) threshold corresponding to the resource in the first auxiliary information and a first reference signal received power (RSRP) threshold corresponding to the resource in the second auxiliary information.
  • the second reference signal received power (RSRP) threshold is independently updated.
  • FIG. 4 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. 4 .
  • the third 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 third 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 third terminal device When the third terminal device triggers the corresponding resource selection/reselection/re-evaluation/preemption detection process, during the corresponding resource exclusion process, if the third terminal device has obtained the first terminal device and the second terminal device report In addition to the auxiliary information (resource set) of the third terminal device, the third terminal device also considers the auxiliary information (resource set) reported by the first terminal device and the second terminal device in addition to its own perception result.
  • the first RSRP threshold may be determined correspondingly, and the first RSRP threshold may be updated; for the resources in the second auxiliary information, the first RSRP threshold may be determined correspondingly.
  • Two RSRP thresholds, and the second RSRP threshold can be updated.
  • the "RSRP threshold corresponding to the resource of the terminal device” may be referred to as “the RSRP threshold of the terminal device” for short.
  • the RSRP threshold Th prio RX , prio TX
  • the RSRP threshold for example, +3dB
  • FIG. 5 is another example diagram of inter-device cooperation according to an embodiment of the present application, and the description is continued on the basis of FIG. 3 .
  • FIG. 3 and FIG. 5 are described by taking three terminal devices as an example, but the present application is not limited to this, for example, there may be more than two receiving devices.
  • sending device B before sending device B (third terminal device) sends sidelink data to receiving device A (first terminal device) and receiving device C (second terminal device), sending device B receives data from the receiving device A and receiving device C's auxiliary information.
  • the auxiliary information includes the reserved resources, the RSRP of the resources, and the reception priority (prio RX ) of the resources as perceived by the receiving device.
  • the sending device B can also obtain the reserved resources, the RSRP of the resources, and the receiving priority of the resources based on its own perception.
  • the auxiliary information reported by the receiving devices A and C is equivalent to expanding the sensing range of the sending device B, so that problems such as hidden nodes can be avoided.
  • the sending device B may select resources based on its own perception result and the auxiliary information from the receiving devices A and C, in order to select resources acceptable to all devices as much as possible. For example, the sending device B excludes the union of all reported resources, and the remaining resources (candidate resources) are the resources acceptable to all receiving devices A and C.
  • FIG. 5 schematically illustrates this.
  • the sending device B excludes the resources reported by the receiving devices A and C
  • the set of remaining resources is an empty set.
  • more remaining resources can be generated by updating the RSRP threshold (eg, increasing 3dB on the original basis).
  • the embodiments of the present application independently update the RSRP thresholds of different receiving devices.
  • a third terminal device determines a first distance between the third terminal device and the first terminal device, and a second distance between the third terminal device and the second terminal device distance; and determining an update sequence of the first reference signal received power (RSRP) threshold and the second reference signal received power (RSRP) threshold according to the first distance and the second distance.
  • RSRP reference signal received power
  • the third terminal device preferentially updates the first reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • the third terminal device preferentially updates the second reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • the determination that the distance between the transmitting device and the receiving device is small may be based on a comparison with a distance threshold. For example, if the distance between a certain receiving device and the sending device is less than (or equal to) a certain distance threshold, the RSRP threshold of the receiving device is preferentially updated.
  • sending device B first updates the RSRP threshold of receiving device A with a smaller distance from itself; updating the RSRP threshold of a certain device means allowing the device to suffer greater interference. Since the receiving device A is closer to the transmitting device B, the receiving device A has a higher useful signal strength to receive the transmitting device B, and the receiving device A is more tolerant of increased interference, so the RSRP threshold of the receiving device A can be prioritized. to update.
  • the RSRP threshold of receiving device A is increased by 3dB, more remaining resources (candidate resources) are generated on the side of device A.
  • the The number of resources (eg, 6) may meet the given requirements.
  • the RSRP threshold of the receiving device C can be updated again, that is, the RSRP threshold of the receiving device C is increased by 3dB.
  • the RSRP thresholds of the receiving device A and the receiving device C may be updated alternately until the number of remaining candidate resources is greater than or equal to a certain threshold.
  • the third terminal device determines the first terminal device and the first terminal device according to sidelink control information from the first terminal device or location information or area identification in the first auxiliary information the first distance between the third terminal devices.
  • the third terminal device determines the second terminal device and the second terminal device according to sidelink control information from the second terminal device or location information or area identification in the second auxiliary information. the second distance between the third terminal devices.
  • the sending device may obtain the distance between itself and the receiving device that reports the auxiliary information based on the auxiliary information.
  • the auxiliary information carries the geographic location information (such as zone ID, geographic coordinates, etc.) of the receiving device, and the sending device knows its own geographic location information, so that the distance from the receiving device can be calculated and obtained.
  • RSRP signal strength
  • the third terminal device determines the strength of the first signal from the first terminal device, and the strength of the second signal from the second terminal device; and based on the strength of the first signal and the The strength of the second signal determines the first reference signal received power (RSRP) threshold and the update sequence of the reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • the third terminal device preferentially updates the first reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • the third terminal device preferentially updates the second reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • the determination that the RSRP of the signal between the transmitting device and the receiving device is larger may be based on a comparison with a signal strength threshold. For example, if the RSRP of a signal between a certain receiving device and a sending device is greater than (or equal to) a certain signal strength threshold, the RSRP threshold of the receiving device is updated preferentially.
  • the third terminal device determines the first terminal based on measurements of sidelink control information from the first terminal device or reference signal received power (RSRP) of the first assistance information The strength of the first signal between the device and the third terminal device.
  • RSRP reference signal received power
  • the third terminal device determines the second terminal based on measurements of sidelink control information or reference signal received power (RSRP) of the second assistance information from the second terminal device The strength of the second signal between the device and the third terminal device.
  • RSRP reference signal received power
  • the sending device B can measure the RSRP based on the auxiliary information of the receiving device A or the receiving device C. Since the auxiliary information is also sent through the PSCCH/PSSCH, the sending device B can obtain the RSRP with the receiving device A or C.
  • the third terminal device selects or reselection resources
  • the first RSRP threshold corresponding to the resource in the first auxiliary information from the first terminal device and the second auxiliary information from the second terminal device are compared.
  • the second RSRP threshold corresponding to the resource is updated independently. In this way, it is possible to take into account the resource selection preferences of different receiving devices, and select the resources for which all receiving devices are subject to less interference for side link transmission, thereby improving the reliability of side link transmission.
  • An embodiment of the present application provides a resource selection method, which is described from a third terminal device, and the same content as the embodiment of the first aspect will not be repeated.
  • the embodiments of the second aspect may be implemented in combination with the embodiments of the first aspect, or may be implemented independently.
  • the third terminal device updates a third reference signal received power (RSRP) threshold corresponding to the resource of the third terminal device according to the sensing result of the third terminal device.
  • RSRP reference signal received power
  • the sending device B also performs sensing and also has an RSRP threshold for resource exclusion, that is, the RSRP threshold (third RSRP threshold) of the sending device.
  • Sending device B independently updates the RSRP threshold (first RSRP threshold) of receiving device A, the RSRP threshold (second RSRP threshold) of receiving device C, and its own RSRP threshold (third RSRP threshold).
  • excluding the resources reported by the receiving device can protect the receiving by the receiving device (or the sending by the sending device) from being interfered.
  • resources perceived by the sending device interference to other devices can also be avoided.
  • the first reference signal received power (RSRP) threshold and/or the second reference signal received power (RSRP) threshold are compared to the third reference signal received power (RSRP) threshold by The third terminal device is preferentially updated.
  • the RSRP thresholds (the first RSRP threshold and/or the second RSRP threshold) of the receiving device A and/or C may be updated in preference to the RSRP threshold of the transmitting device B (the third RSRP threshold). In this way, the reception of the receiving device can be preferentially protected.
  • the RSRP thresholds of the transmitting device and the receiving device may be updated alternately until the number of remaining candidate resources is greater than or equal to a certain threshold.
  • the third terminal device increases the first reference signal received power (RSRP) threshold and/or the second reference signal received power (RSRP) threshold when the number of candidate resources does not meet the requirement and continue to perform resource selection or reselection; the second terminal device increases the third reference signal received power (RSRP) threshold and continues to perform resource selection or reselection when the number of candidate resources still does not meet the requirement.
  • RSRP first reference signal received power
  • RSRP second reference signal received power
  • FIG. 6 is a schematic diagram of a resource selection method according to an embodiment of the present application.
  • the resource selection method is performed by a sending device; wherein a receiving device that is closer to the sending device is called a “near-end” receiving device, and a receiving device that is closer to the sending device is called a “near-end” receiving device, and the sending device A receiving device that is farther away is called a "remote" receiving device.
  • the method includes:
  • 605 For example, if 605 is executed for the first time, it can be determined to update the RSRP threshold Th0 of the near-end receiving device, and execute 606; if 605 is executed for the second time, it can be determined to update the RSRP threshold Th1 of the far-end receiving device, and execute 607; If 605 is executed for the third time, it may be determined to update the RSRP threshold Th0 of the near-end receiving device, and 606 is executed; . . . and so on.
  • the RSRP threshold Th0 Th0+3dB of the near-end receiving device
  • the RSRP threshold Th1 Th1+3dB of the remote receiving device.
  • the method further includes:
  • 610 is the first execution, it can be determined to execute 605; if 610 is the second execution, it can be determined to update the RSRP threshold Th2 of the sending device, and 611 is executed; if 610 is the third execution, it can be determined Execute 605; ... and so on.
  • RSRP threshold Th2 Th2+3dB of the sending device
  • FIG. 6 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. 6 .
  • the resources reported by the receiving device may be preferentially excluded, and the RSRP threshold of the receiving device may be updated alternately until the number of candidate resources is greater than or equal to a certain threshold. Then, the resources perceived by the sending device are excluded, the RSRP threshold of the sending device is updated, or the RSRP thresholds of the sending device and the receiving device are updated alternately until the number of candidate resources is greater than or equal to a certain threshold.
  • the method described in the embodiments of the first aspect can be used to preferentially update the RSRP thresholds of the receiving devices whose distance from the transmitting device is smaller (or the RSRP is larger) .
  • the third terminal device selects or reselection resources
  • the first RSRP threshold corresponding to the resource in the first auxiliary information from the first terminal device and the second auxiliary information from the second terminal device are compared.
  • the second RSRP threshold corresponding to the resource is updated independently. In this way, it is possible to take into account the resource selection preferences of different receiving devices, and select the resources for which all receiving devices are subject to less interference for side link transmission, thereby improving the reliability of side link transmission.
  • the third terminal device updates the third reference signal received power (RSRP) threshold corresponding to the resources of the third terminal device according to the self-perception result; thus, it is possible to avoid serious interference to the receiving device and to avoid other equipment can cause serious interference.
  • RSRP reference signal received power
  • An embodiment of the present application provides a resource selection method, which is described from a third terminal device, and the same content as the embodiments of the first and second aspects will not be repeated.
  • the embodiments of the third aspect may be implemented in combination with the embodiments of the first and second aspects, or may be implemented independently.
  • the third terminal device performs resource selection or reselection according to the first auxiliary information and the second auxiliary information; and when the number of candidate resources does not meet the requirement, the third terminal device, Use self-perception results to proceed with resource selection or reselection.
  • the sending device selects resources based on its own perception results. In other words, at this time, the sending device falls back to the traditional mode 2 resource selection, that is, the resource selection when there is no cooperation between devices. In this way, the problem is actually transformed into resource selection in the absence of auxiliary information, which can be solved using related techniques.
  • the third terminal device performs resource selection or reselection according to the first auxiliary information and the second auxiliary information; and when the number of candidate resources does not meet the requirement, the third terminal device, Resource selection or reselection is continued using the assistance information from the terminal device with the farthest distance or the smallest reference signal received power (RSRP) and the result of its own perception.
  • RSRP reference signal received power
  • the sending device uses the assistance of the receiving device with the largest distance from itself or the smallest RSRP between itself and itself. information, and its own perception results for resource selection. In this way, the problem is actually transformed into resource selection when there is only auxiliary information from one terminal device, which can be solved using related techniques.
  • the third terminal device can flexibly decide whether to use auxiliary information or which terminal device auxiliary information to use when selecting resources.
  • auxiliary information from one terminal device, relevant technologies can be used to select resources, and the problem of inconsistent perception results of multiple terminal devices can be solved.
  • the embodiment of the present application provides a resource indication method.
  • the embodiments of the fourth aspect may be implemented in combination with the embodiments of the first to third aspects, or may be implemented independently.
  • the result of resource selection may be that the two always send at the same time. On the one hand, this will cause the device A1 and the device B to be unable to receive the information sent by each other, that is, a half-duplex problem. On the other hand, the transmission resources of device A1 and device B may overlap in the frequency domain, which will cause the transmission of device A1 and device B to collide all the time, that is, a continuous collision problem occurs.
  • an embodiment of the present application provides a resource indication method.
  • the first terminal device sends periodic traffic at a first time unit; and the first terminal device sends auxiliary information at a second time unit different from the first time unit; wherein the auxiliary information Indicates resource information occupied by the periodic service.
  • the first terminal device sends auxiliary information on a time unit different from the transmitted periodic service, and the auxiliary information indicates the resources occupied by the transmission of the device A1.
  • the second time unit is between the two first time units.
  • a time unit may be a subframe, a slot, or a symbol, among others.
  • the first terminal device also sends the auxiliary information in the second time unit when the priority of the periodic service is higher than a threshold.
  • the device A1 transmits auxiliary information when the transmission priority is higher than a certain threshold.
  • FIG. 7 is an example diagram of a resource indication according to an embodiment of the present application.
  • the device A1 additionally sends auxiliary information between certain two periodic transmissions, and the auxiliary information indicates the transmission resources (reserved resources) of the device A1, so that the device B can be notified to perform resource reselection and avoid the device A1. of sending.
  • the device A1 may determine whether to transmit the auxiliary information based on the transmission priority. For example, the device A1 sends the auxiliary information when the transmission priority is higher than a certain threshold, otherwise it does not send the auxiliary information, so that the transmission of the high-priority service can be preferentially protected from collision.
  • the auxiliary information can use the 1st stage SCI to indicate the resources reserved by the device A1, so that the method of using the SCI to indicate the reserved resources in Rel-16 NR V2X can be reused, reducing the impact of standardization.
  • a certain transmission of the periodic service is PSCCH 1/PSSCH 1
  • the auxiliary information is PSCCH 2/PSSCH 2 sent before PSCCH 1/PSSCH 1, where PSSCH 2 is a copy of PSSCH 1, and PSCCH 2 (SCI 2)
  • the time-frequency resource field indicates reserved PSCCH 1/PSSCH 1, the period field is set to zero, and other fields are the same as PSCCH 1 (SCI 1).
  • the auxiliary information can also use the resources reserved by the bearer device A1 such as 2nd stage SCI, or MAC CE, or PC5-RRC.
  • the auxiliary information may also include the transmission priority of the device A1, RSRP, and the like.
  • the number of times the device A1 sends the assistance information and the time-frequency location there are no restrictions on the number of times the device A1 sends the assistance information and the time-frequency location.
  • the number of times the device A1 sends can be pre-configured or configured, or the device A1 can determine the sending assistance based on the relevant resource selection steps.
  • the device A1 sends the assistance information one or more times before a certain periodic service transmission.
  • the device A1 may determine whether to send the auxiliary information multiple times according to the sending priority. For example, when the transmission priority is higher than a certain threshold, the device A1 transmits the auxiliary information multiple times. In this way, Device A1 can notify Device B of a potential collision in advance.
  • device B After receiving the auxiliary information sent by device A1, device B can perform resource reselection based on the relevant resource selection method. For example, when the transmission priority of device A1 is higher than its own transmission priority and/or the RSRP of device A1 is higher than Resource reselection is performed at a certain threshold; when device A1 is the receiver of device B, device B selects a time unit different from that of device A1 for transmission based on resource reselection.
  • the embodiment of the present application provides a resource indication method.
  • the embodiments of the fifth aspect may be implemented in combination with the embodiments of the first to fourth aspects, or may be implemented independently.
  • a third terminal device receives first sidelink control information from a first terminal device; the third terminal device receives second sidelink control information from a second terminal device; and the first Three terminal devices send auxiliary information according to the first priority indicated by the first side link control information and the second priority indicated by the second side link control information; wherein the auxiliary information indicates the resource information.
  • device A2 determines the priority to be sent according to the priority indicated by the SCI A device with a lower priority sends auxiliary information, and the auxiliary information includes the resources occupied by a device with a higher priority.
  • the priority indicated by the SCI 1 is the transmission priority of the device A1. If device A2 receives SCI 2 from device B, the priority indicated by this SCI 2 is the sending priority of device B.
  • the third terminal device when the first priority is greater than the second priority, the third terminal device sends the auxiliary information to the second terminal device; wherein the auxiliary information indicates the first terminal
  • the resource information that the device uses to send may be a periodic service or an aperiodic service.
  • the third terminal device when the first priority is lower than the second priority, the third terminal device sends the auxiliary information to the first terminal device; wherein the auxiliary information indicates the second priority Resource information used by the terminal device for transmission.
  • the transmission may be a periodic service or an aperiodic service.
  • FIG. 8 is another example diagram of a resource indication according to an embodiment of the present application.
  • device A1 and device B send periodic services.
  • the device A2 receives the SCIs of the device A1 and the device B, and thus can find that the above-mentioned half-duplex problem or the continuous collision problem occurs between the device A1 and the device B.
  • the device A2 can determine which device to send the auxiliary information to according to the sending priorities of the device A1 and the device B indicated by the SCI.
  • device A2 sends auxiliary information to a device with a low sending priority, and notifies the device with a low sending priority to perform resource reselection, avoiding the sending of a device with a high sending priority; the auxiliary information includes the equipment with a high sending priority. Occupied sending resources.
  • Embodiments of the present application provide a resource selection apparatus.
  • the apparatus may be, for example, a terminal device (eg, the aforementioned third terminal device), or one or some components or components configured in the terminal device, and the same content as the embodiments of the first to fifth aspects 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 receiving unit 901 which receives the first auxiliary information sent by the first terminal device; and receives the second auxiliary information sent by the second terminal device;
  • a selection unit 902 which, during resource selection or reselection, sets the received power threshold of the first reference signal corresponding to the resource in the first auxiliary information and the received power of the second reference signal corresponding to the resource in the second auxiliary information
  • the thresholds are updated independently.
  • the resource selection apparatus 900 may further include:
  • a determining unit 903 which determines a first distance between a third terminal device and the first terminal device, and a second distance between the third terminal device and the second terminal device; and according to the first The distance and the second distance determine an update sequence of the first reference signal received power threshold and the second reference signal received power threshold.
  • the selection unit 902 preferentially updates the first reference signal received power threshold.
  • the selection unit 702 preferentially updates the received power threshold of the second reference signal.
  • the determining unit 903 determines the first terminal device and the all the first distance between the third terminal devices.
  • the determining unit 903 determines, according to sidelink control information from the second terminal device or location information or an area identifier in the second auxiliary information, the second terminal device and the the second distance between the third terminal devices.
  • the determining unit 903 determines the strength of the first signal from the first terminal device, the strength of the second signal from the second terminal device; and according to the strength of the first signal and the The strength of the second signal determines the received power threshold of the first reference signal and the update sequence of the received power threshold of the reference signal.
  • the selection unit 902 preferentially updates the first reference signal received power threshold.
  • the selection unit 902 when the strength of the first signal is less than or equal to the strength of the second signal, or when the strength of the first signal is less than or equal to a strength threshold and/or the first signal When the strength of the second signal is greater than the strength threshold, the selection unit 902 preferentially updates the received power threshold of the second reference signal.
  • the determining unit 903 determines the first terminal device and the reference signal received power according to the measurement of the sidelink control information from the first terminal device or the reference signal received power of the first auxiliary information. The strength of the first signal between the third terminal devices.
  • the determining unit 903 determines the second terminal device and the reference signal received power according to measurement of the sidelink control information from the second terminal device or the reference signal received power of the second auxiliary information. The strength of the second signal between the third terminal devices.
  • the selecting unit 902 further updates the third reference signal received power threshold corresponding to the resource of the third terminal device according to the perception result of the third terminal device.
  • the first reference signal received power threshold and/or the second reference signal received power threshold is updated preferentially by the selection unit 902 .
  • the selection unit 902 increases the received power threshold of the first reference signal and/or the received power threshold of the second reference signal and continues to perform resource selection when the number of candidate resources does not meet the requirement or reselect.
  • the selection unit 902 increases the received power threshold of the third reference signal and continues to perform resource selection or reselection under the condition that the number of candidate resources still does not meet the requirement.
  • the selection unit 902 performs resource selection or reselection according to the first auxiliary information and the second auxiliary information; and when the number of candidate resources does not meet the requirement, uses the self-perception result to Continue with resource selection or reselection.
  • the selection unit 902 performs resource selection or re-selection according to the first auxiliary information and the second auxiliary information; Or refer to the auxiliary information of the terminal device with the smallest signal received power and the self-perception result to continue resource selection or reselection.
  • 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 third terminal device selects or reselection resources
  • the first RSRP threshold corresponding to the resource in the first auxiliary information from the first terminal device and the second auxiliary information from the second terminal device are compared.
  • the second RSRP threshold corresponding to the resource is updated independently. In this way, it is possible to take into account the resource selection preferences of different receiving devices, and select the resources for which all receiving devices are subject to less interference for side link transmission, thereby improving the reliability of side link transmission.
  • An embodiment of the present application further provides a communication system, and reference may be made to FIG. 1 , and the same contents as those of the embodiments of the first aspect to the sixth aspect will not be repeated.
  • the communication system 100 may include at least:
  • a first terminal device which sends the first auxiliary information
  • the third terminal device receives the power threshold of the first reference signal corresponding to the resource in the first auxiliary information and the second reference signal corresponding to the resource in the second auxiliary information.
  • the power thresholds are updated independently.
  • 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. 10 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • the network device 1000 may include: a processor 1010 (eg, a central processing unit CPU) and a memory 1020 ; the memory 1020 is coupled to the processor 1010 .
  • the memory 1020 can store various data; in addition, a program 1030 for information processing is also stored, and the program 1030 is executed under the control of the processor 1010 .
  • the network device 1000 may further include: a transceiver 1040, an antenna 1050, etc.; wherein, the functions of the above components are similar to those in the prior art, and will not be repeated here. It is worth noting that the network device 1000 does not necessarily include all the components shown in FIG. 10 ; in addition, the network device 1000 may also include components not shown in FIG. 10 , 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. 11 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1100 may include a processor 1110 and a memory 1120 ; the memory 1120 stores data and programs, and is coupled to the processor 1110 .
  • 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 1110 may be configured to execute a program to implement the resource selection method described in the embodiments of the first to third aspects.
  • the processor 1110 may be configured to perform the following controls: receive the first auxiliary information sent by the first terminal device; receive the second auxiliary information sent by the second terminal device; A first reference signal received power (RSRP) threshold corresponding to a resource in a piece of auxiliary information and a second reference signal received power (RSRP) threshold corresponding to a resource in the second auxiliary information are independently updated.
  • RSRP reference signal received power
  • RSRP second reference signal received power
  • the processor 1110 may be configured to execute a program to implement the resource indication method described in the embodiment of the fourth aspect.
  • the processor 1110 may be configured to perform the following controls: sending periodic traffic at a first time unit; and sending auxiliary information at a second time unit different from the first time unit; wherein the auxiliary information indicates the Resource information occupied by periodic services.
  • the processor 1110 may be configured to execute a program to implement the resource indication method described in the embodiment of the fifth aspect.
  • the processor 1110 may be configured to control the following: receive first sidelink control information from a first terminal device; receive second sidelink control information from a second terminal device; and The first priority indicated by the link control information and the second priority indicated by the second side link control information, auxiliary information is sent; wherein the auxiliary information indicates resource information used for sending.
  • the terminal device 1100 may further include: a communication module 1130 , an input unit 1140 , a display 1150 , and a power supply 1160 .
  • 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 1100 does not necessarily include all the components shown in FIG. 11 , and the above components are not required; in addition, the terminal device 1100 may also include components not shown in FIG. 11 . 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 described in the embodiments of the first to third aspects, or to execute the third The resource indication method described in the embodiment of the fourth or fifth aspect.
  • Embodiments of the present application further provide a storage medium storing a computer program, wherein the computer program causes a terminal device to execute the resource selection method described in the first to third aspects of the embodiment, or to execute the fourth or fifth aspect of the embodiment.
  • the resource indication method causes a terminal device to execute the resource selection method described in the first to third aspects of the embodiment, or to execute the fourth or fifth aspect of the embodiment.
  • 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 figures 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 third terminal device receives the first auxiliary information sent by the first terminal device
  • the third terminal device receives the second auxiliary information sent by the second terminal device.
  • the third terminal device sets a first reference signal received power (RSRP) threshold corresponding to the resource in the first auxiliary information and a second reference signal corresponding to the resource in the second auxiliary information.
  • RSRP Reference Signal Received Power
  • the third terminal device determines a first distance between the third terminal device and the first terminal device, and a second distance between the third terminal device and the second terminal device;
  • An update sequence of the first reference signal received power (RSRP) threshold and the second reference signal received power (RSRP) threshold is determined according to the first distance and the second distance.
  • Supplement 3 The method according to Supplement 2, wherein, when the first distance is less than or equal to the second distance, or when the first distance is less than or equal to a distance threshold and/or When the second distance is greater than the distance threshold, the third terminal device preferentially updates the first reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • Supplement 4 The method according to Supplement 2, wherein when the first distance is greater than the second distance, or when the first distance is greater than a distance threshold and/or the second distance When the distance is less than or equal to the distance threshold, the third terminal device preferentially updates the second reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • Supplement 5 The method according to any one of Supplements 2 to 4, wherein the third terminal device is based on the side link control information from the first terminal device or the position in the first auxiliary information information or an area identifier to determine the first distance between the first terminal device and the third terminal device.
  • Supplement 6 The method according to any one of Supplements 2 to 4, wherein the third terminal device is based on the side link control information from the second terminal device or the position in the second auxiliary information information or area identification to determine the second distance between the second terminal device and the third terminal device.
  • Supplement 7 The method according to Supplement 1, wherein the method further comprises:
  • the third terminal device determines the strength of the first signal from the first terminal device and the strength of the second signal from the second terminal device
  • RSRP reference signal received power
  • RSRP update sequence of the reference signal received power
  • Supplement 8 The method according to Supplement 7, wherein when the strength of the first signal is greater than the strength of the second signal, or when the strength of the first signal is greater than a strength threshold value and /or when the strength of the second signal is less than or equal to the strength threshold, the third terminal device preferentially updates the first reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • Supplement 9 The method according to Supplement 7, wherein, in the case that the strength of the first signal is less than or equal to the strength of the second signal, or when the strength of the first signal is less than or equal to the strength When the threshold value and/or the strength of the second signal is greater than the strength threshold value, the third terminal device preferentially updates the second reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • Supplement 10 The method according to any one of Supplementary Notes 7 to 9, wherein the third terminal device is based on a reference to sidelink control information or the first auxiliary information from the first terminal device Measurement of Signal Received Power (RSRP) to determine the strength of the first signal between the first terminal device and the third terminal device.
  • RSRP Signal Received Power
  • Supplement 11 The method according to any one of Supplements 7 to 9, wherein the third terminal device is based on a reference to sidelink control information or the second auxiliary information from the second terminal device Measurement of Signal Received Power (RSRP) to determine the strength of the second signal between the second terminal device and the third terminal device.
  • RSRP Signal Received Power
  • the third terminal device updates the third reference signal received power (RSRP) threshold corresponding to the resource of the third terminal device according to the self-perception result.
  • RSRP reference signal received power
  • Supplement 13 The method according to Supplement 12, wherein, compared to the third reference signal received power (RSRP) threshold, the first reference signal received power (RSRP) threshold and/or the second reference signal received power (RSRP) threshold
  • the reference signal received power (RSRP) threshold is preferentially updated by the third terminal device.
  • Supplement 14 The method according to Supplement 12 or 13, wherein the method further comprises:
  • the third terminal device increases the first reference signal received power (RSRP) threshold and/or the second reference signal received power (RSRP) threshold and continues to process resources. select or reselect.
  • RSRP reference signal received power
  • RSRP second reference signal received power
  • the second terminal device increases the third reference signal received power (RSRP) threshold and continues to perform resource selection or reselection under the condition that the number of candidate resources still does not meet the requirement.
  • RSRP reference signal received power
  • Supplementary Note 16 The method according to any one of Supplementary Notes 1 to 15, wherein the method further comprises:
  • the third terminal device performs resource selection or reselection according to the first auxiliary information and the second auxiliary information.
  • the third terminal device uses the self-perception result to continue resource selection or reselection.
  • the third terminal device performs resource selection or reselection according to the first auxiliary information and the second auxiliary information.
  • the third terminal device uses the auxiliary information from the terminal device with the farthest distance or the smallest reference signal received power (RSRP) and the self-perception result to continue resource selection or reselection. .
  • RSRP reference signal received power
  • a resource indication method comprising:
  • the first terminal device transmits the periodic service in the first time unit
  • the first terminal device sends auxiliary information in a second time unit different from the first time unit; wherein the auxiliary information indicates resource information occupied by the periodic service.
  • Supplement 19 The method according to Supplement 18, wherein the first terminal device also sends the auxiliary information in the second time unit when the priority of the periodic service is higher than a threshold .
  • Supplement 20 The method according to Supplement 18 or 19, wherein the second time unit is between two of the first time units.
  • a resource indication method comprising:
  • the third terminal device receives the first side link control information from the first terminal device
  • the third terminal device receives the second sidelink control information from the second terminal device.
  • the third terminal device sends auxiliary information according to the first priority indicated by the first side link control information and the second priority indicated by the second side link control information; wherein the auxiliary information indicates a for the resource information sent.
  • Supplement 22 The method according to Supplement 19, wherein the third terminal device sends the assistance to the second terminal device when the first priority is greater than the second priority information; wherein the auxiliary information indicates resource information used by the first terminal device for transmission.
  • Supplement 23 The method according to Supplement 19, wherein the third terminal device sends the assistance to the first terminal device when the first priority is smaller than the second priority information; wherein the auxiliary information indicates resource information used by the second terminal device for transmission.
  • Supplementary note 24 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 realize the resource according to any one of Supplementary Notes 1 to 17 The selection method, or the resource indication method described in any one of Supplementary Notes 18 to 23.

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Abstract

本申请实施例提供一种资源选择方法以及装置，所述方法包括：第三终端设备接收第一终端设备发送的第一辅助信息；所述第三终端设备接收第二终端设备发送的第二辅助信息；以及所述第三终端设备在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率门限和所述第二辅助信息中的资源对应的第二参考信号接收功率门限独立地进行更新。

Description

资源选择方法以及装置 技术领域
本申请实施例涉及通信技术领域。
背景技术
车联网(V2X，Vehicle to Everything)是一种车辆通信技术，相比于使用Uu链路的蜂窝通信，V2X的发送设备通过边链路(sidelink)与接收设备直接进行通信。新无线(NR New Radio)V2X是5G Rel-16的重要项目，相比于Rel-14/Rel-15的长期演进(LTE，Long Term Evolution)V2X，NR V2X可以支持更多场景和业务，能够满足更高的性能需求。
NR V2X定义的物理信道包括物理边链路控制信道(PSCCH，Physical Sidelink Control Channel)、物理边链路共享信道(PSSCH，Physical Sidelink Shared Channel)和物理边链路反馈信道(PSFCH，Physical Sidelink Feedback Channel)。PSCCH承载1st stage边链路控制信息(SCI，Sidelink Control Informaiton)，1st stage SCI主要用于预留资源。PSSCH承载2nd stage SCI以及传输块(TB，Transport Block)，其中2nd stage SCI主要用于TB解调。PSFCH承载边链路反馈信息(可称为HARQ-ACK)。边链路发送所使用的资源(时频资源)位于某一资源池内。
NR V2X定义了两种工作模式。对于NR V2X模式1(Mode 1)，终端设备用于V2X通信的资源由网络设备(基站)通过NR Uu链路进行调度或配置。对于NR V2X模式2(Mode 2)，终端设备可以基于感知结果，自主地对用于V2X通信的时频资源进行选择。
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：对于Rel-16 NR V2X的自主资源选择(Mode 2)，终端设备基于自身感知结果(sensing result)进行资源选择和发送，这可以在一定程度上避免设备间的干扰或碰撞。但在某些情况下，仍然会有资源发送碰撞的问题发生。因此，作为对自主资源选择Mode 2的增强，设备间协作(inter-UE coordination)也成为Rel-17 V2X的研究 内容之一。设备间协作的具体方式等，是待研究和解决的问题。
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方法以及装置。
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：
第三终端设备接收第一终端设备发送的第一辅助信息；
所述第三终端设备接收第二终端设备发送的第二辅助信息；以及
所述第三终端设备在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率门限和所述第二辅助信息中的资源对应的第二参考信号接收功率门限独立地进行更新。
根据本申请实施例的另一个方面，提供一种资源选择装置，包括：
接收单元，其接收第一终端设备发送的第一辅助信息；并接收第二终端设备发送的第二辅助信息；以及
选择单元，其在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率门限和所述第二辅助信息中的资源对应的第二参考信号接收功率门限独立地进行更新。
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，其发送第一辅助信息；
第二终端设备，其发送第二辅助信息；以及
第三终端设备，其在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率门限和所述第二辅助信息中的资源对应的第二参考信号接收功率门限独立地进行更新。
本申请实施例的有益效果之一在于：第三终端设备在资源选择或重选时，对来自第一终端设备的第一辅助信息中的资源对应的第一RSRP门限和来自第二终端设备的第二辅助信息中的资源对应的第二RSRP门限独立地进行更新。由此，能够兼顾不同接收设备的资源选择偏好，选择出所有接收设备都受到较小干扰的资源进行边链路发送，从而能够提高边链路传输的可靠性。
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是本申请实施例的设备间协作的一示例图；
图3是本申请实施例的设备间协作的另一示例图；
图4是本申请实施例的资源选择方法的一示意图；
图5是本申请实施例的设备间协作的另一示例图；
图6是本申请实施例的资源选择方法的另一示意图；
图7是本申请实施例的资源指示的一示例图；
图8是本申请实施例的资源指示的另一示例图；
图9是本申请实施例的资源选择装置的一示意图；
图10是本申请实施例的网络设备的示意图；
图11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Mode2)，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和NR 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。
对于Rel-16 NR V2X的自主资源选择(Mode 2)，终端设备基于自身感知结果(sensing result)进行资源选择和发送，这可以在一定程度上避免设备间的干扰或碰撞。资源选择的步骤可以参见标准TS 38.214 V16.2.0的8.1.4小节。
例如，资源选择的主要步骤如表1所示：
表1
Figure PCTCN2020122999-appb-000001
Figure PCTCN2020122999-appb-000002
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。
然而，在某些情况下，仍然会有资源碰撞的问题发生。例如出现隐藏节点问题：设备B向设备A发送边链路信息，设备A周围存在干扰源设备I，由于设备B无法感知到设备I，设备B的发送会受到设备I的干扰；即设备I可以被认为是一个隐藏节点。
终端设备独立进行资源选择是Mode 2存在碰撞问题和半双工问题的一个原因。在Mode 2基础上引入设备间协作，可以额外为终端设备提供依靠自身感知无法获得的信息，从而可以进一步避免碰撞问题和半双工问题。作为对自主资源选择Mode 2的增强，设备间协作也成为即将开始的Rel-17 V2X的研究内容之一。设备间协作需要设备之间交互信息，可称为辅助信息(assistance information)。辅助信息可以被用于优化资源选择。
根据Rel-17 V2X的立项文件(WID，work item description)，辅助信息至少可以指示(或包括)资源信息，即指示一个资源集合。例如，辅助信息可以指示终端设备基于感知获得的不倾向使用的(或者倾向使用的)资源、终端设备自身发送所占用的资源，等等。
图2是本申请实施例的设备间协作的一示例图，其中设备I是一个隐藏节点。如图2所示，例如，设备A可以向设备B发送辅助信息，该辅助信息指示了设备A感知到的被设备I预留的资源，设备B在接收到辅助信息后，可以在资源选择时避开上述被预留的资源，从而可以避免前面所述的碰撞问题。
但是，目前Rel-17 V2X的标准化工作刚刚启动，设备间协作的具体方式，包括辅助信息所指示的内容等，都是待研究和解决的问题。例如，对于边链路中的设备间协作，接收设备可以上报受到干扰严重的资源给发送设备，辅助发送设备在资源选择时避开或排除该资源。
然而，发送设备可能接收到多个接收设备上报的资源，这些上报的资源可能是彼此矛盾的，甚至与发送设备自身的感知结果也是矛盾的。在这种情况下，不当的资源选择将导致极大的可靠性下降。如何保证发送设备能够选择出对多个接收设备都合适的资源， 以及如何协调与发送设备感知结果的矛盾都是待研究和解决的问题。
图3是本申请实施例的设备间协作的另一示例图。例如，如图3所示，设备B将要向设备A和设备C发送边链路数据，将设备B称为发送设备，将设备A和设备C称为接收设备；设备A和设备C可以先向设备B上报辅助信息。
例如，设备上报感知到的被预留的资源，其中，被预留的资源上会受到较大干扰。接收设备A在某一个资源上受到严重干扰(将该资源上报给设备B，让设备B避开该资源)，但接收设备C在该资源上没有受到任何干扰(没有将该资源上报给设备B，而上报了其他资源)，即设备A与设备C上报的资源是矛盾的。
如图3所示，设备上报的资源用阴影表示，其他的空白资源表示候选资源。如果发送设备B排除所有上报的资源，即排除设备A和设备C上报资源的并集(如设备A∪设备C的阴影资源所示)，则发送设备B的候选资源集合为空集，相当于设备A和设备C的可用资源不存在交集。
此外，发送设备B还有通过自身感知确定的需要排除的资源，这些资源也可能与上报的资源是相互矛盾的。如何保证发送设备能够选择出对多个接收设备都合适的资源，以及如何协调与发送设备感知结果的矛盾都是待研究和解决的问题，以下的实施例将针对这些问题进行示意性说明。
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，从第三终端设备进行说明。第三终端设备可以向第一终端设备和第二终端设备发送边链路数据，因此第三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，本申请实施例的第三终端设备为发送设备，第一终端设备和第二终端设备为接收设备。
此外，第一终端设备和第二终端设备可以向第二终端设备发送辅助信息(也可称为资源信息或资源集合)。辅助信息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，第三终端设备接收第一终端设备发送的第一辅助信息；
402，所述第三终端设备接收第二终端设备发送的第二辅助信息；以及
403，所述第三终端设备在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率(RSRP)门限和所述第二辅助信息中的资源对应的第二参考信号接收功率(RSRP)门限独立地进行更新。
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，第三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第三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。
当第三终端设备触发了对应的资源选择/重选/重评估/抢占检测过程时，在进行对应的资源排除过程中，如果第三终端设备已经获得了第一终端设备和第二终端设备上报的辅助信息(资源集合)，则第三终端设备除去其本身的感知结果外，还一并考虑第一终端设备和第二终端设备上报的辅助信息(资源集合)。
在本申请实施例中，针对第一辅助信息中的资源，可以对应地确定第一RSRP门限，并且可以对该第一RSRP门限进行更新；针对第二辅助信息中的资源，可以对应地确定第二RSRP门限，并且可以对该第二RSRP门限进行更新。
以下为简单起见，可以将“终端设备的资源对应的RSRP门限”简称为“终端设备的RSRP门限”。关于具体如何确定RSRP门限Th(prio RX,prio TX)以及具体如何更新RSRP门限(例如+3dB)，可以参考相关技术，本申请以下实施例针对RSRP门限的更新条件 和/或时机等进行说明。
图5是本申请实施例的设备间协作的另一示例图，在图3的基础上继续进行说明。图3和图5以三个终端设备为例进行说明，但本申请不限于此，例如接收设备还可以多于2个。
如图5所示，发送设备B(第三终端设备)向接收设备A(第一终端设备)和接收设备C(第二终端设备)发送边链路数据之前，发送设备B接收到来自接收设备A和接收设备C的辅助信息。辅助信息包括接收设备感知到的被预留的资源、资源的RSRP和资源的接收优先级(prio RX)。发送设备B基于自身感知也可以获得被预留的资源、资源的RSRP和资源的接收优先级。
接收设备A和C上报的辅助信息相当于扩展了发送设备B的感知范围，从而可以避免隐藏节点等问题。发送设备B可以基于自身感知结果和来自接收设备A和C的辅助信息进行资源选择，目的是尽量选择出对于所有设备都可接受的资源。例如，发送设备B排除掉所有上报资源的并集，剩余的资源(候选资源)即为所有接收设备A和C都可接受的资源。
然而，由于不同接收设备A和C所处的干扰环境是独立的，可能导致剩余的资源数过小，甚至不存在剩余的资源。图5对此进行了示意性说明，例如，发送设备B在排除接收设备A和C上报的资源后，剩余资源的集合为空集。在这种情况下，可以通过更新RSRP门限(例如在原基础上增加3dB)来产生更多的剩余资源。相比于同时更新所有接收设备的RSRP门限，本申请实施例对不同接收设备的RSRP门限独立地进行更新。
在一些实施例中，第三终端设备确定所述第三终端设备与所述第一终端设备之间的第一距离，以及所述第三终端设备与所述第二终端设备之间的第二距离；以及根据所述第一距离和所述第二距离，确定所述第一参考信号接收功率(RSRP)门限和所述第二参考信号接收功率(RSRP)门限的更新顺序。
例如，在所述第一距离小于或等于所述第二距离的情况下，或者在所述第一距离小于或等于距离门限值和/或所述第二距离大于所述距离门限值的情况下，所述第三终端设备优先更新所述第一参考信号接收功率(RSRP)门限。
再例如，在所述第一距离大于所述第二距离的情况下，或者在所述第一距离大于距离门限值和/或所述第二距离小于或等于所述距离门限值的情况下，所述第三终端设备优先更新所述第二参考信号接收功率(RSRP)门限。
例如，对发送设备和接收设备之间的距离较小的判断可以基于与距离门限的比较。例如，如果某一接收设备与发送设备之间的距离小于(或等于)某一距离门限，则该接收设备的RSRP门限优先得到更新。
如图5所示，例如，发送设备B首先更新与自己之间的距离较小的接收设备A的RSRP门限；更新某一设备的RSRP门限意味着让该设备承受更大的干扰。由于接收设备A距离发送设备B更近，接收设备A接收该发送设备B的有用信号强度也更高，接收设备A对干扰增加的承受能力也更强，因此可以优先对接收设备A的RSRP门限进行更新。
如图5所示，将接收设备A的RSRP门限增加3dB后，设备A侧产生了更多的剩余资源(候选资源)，发送设备B在排除接收设备A和C上报的资源后，此时候选资源的数目(例如6个)可能满足既定要求。
如果候选资源数目仍不满足要求，可以再对接收设备C的RSRP门限进行更新，即将接收设备C的RSRP门限增加3dB。例如，可以交替地更新接收设备A和接收设备C的RSRP门限，直到剩余的候选资源数大于等于某一门限。
由此，可以兼顾不同接收设备的资源选择偏好，选择出所有接收设备都受到较小干扰的资源进行边链路发送，从而可以提高边链路传输的可靠性。
在一些实施例中，所述第三终端设备根据来自所述第一终端设备的边链路控制信息或者所述第一辅助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三终端设备之间的第一距离。
在一些实施例中，所述第三终端设备根据来自所述第二终端设备的边链路控制信息或者所述第二辅助信息中的位置信息或区域标识，来确定所述第二终端设备和所述第三终端设备之间的第二距离。
例如，发送设备可以基于辅助信息获得自己与上报该辅助信息的接收设备之间的距离。例如，辅助信息中携带了接收设备的地理位置信息(如zone ID、地理坐标等)，发送设备已知自己的地理位置信息，从而可以计算获得与接收设备之间的距离。
以上示意性说明了基于距离或位置的情况，以下再对信号强度(RSRP)进行说明。
在一些实施例中，第三终端设备确定来自所述第一终端设备的第一信号的强度，以及来自所述第二终端设备的第二信号的强度；以及根据所述第一信号的强度和所述第二信号的强度，确定所述第一参考信号接收功率(RSRP)门限和所述参考信号接收功率(RSRP)门限的更新顺序。
例如，在所述第一信号的强度大于所述第二信号的强度的情况下，或者在所述第一信号的强度大于强度门限值和/或所述第二信号的强度小于或等于所述强度门限值的情况下，所述第三终端设备优先更新所述第一参考信号接收功率(RSRP)门限。
再例如，在所述第一信号的强度小于或等于所述第二信号的强度的情况下，或者在所述第一信号的强度小于或等于强度门限值和/或所述第二信号的强度大于所述强度门限值的情况下，所述第三终端设备优先更新所述第二参考信号接收功率(RSRP)门限。
例如，对发送设备和接收设备之间信号的RSRP较大的判断，可以基于与信号强度门限的比较。例如，如果某一接收设备与发送设备之间信号的RSRP大于(或等于)某一信号强度门限，则该接收设备的RSRP门限优先得到更新。
在一些实施例中，第三终端设备根据对来自所述第一终端设备的边链路控制信息或者所述第一辅助信息的参考信号接收功率(RSRP)的测量，来确定所述第一终端设备和所述第三终端设备之间的第一信号的强度。
在一些实施例中，第三终端设备根据对来自所述第二终端设备的边链路控制信息或者所述第二辅助信息的参考信号接收功率(RSRP)的测量，来确定所述第二终端设备和所述第三终端设备之间的第二信号的强度。
例如，发送设备B可以基于接收设备A或接收设备C的辅助信息测量RSRP，由于辅助信息也是通过PSCCH/PSSCH发送的，发送设备B可以获得与接收设备A或C之间的RSRP。
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，第三终端设备在资源选择或重选时，对来自第一终端设备的第一辅助信息中的资源对应的第一RSRP门限和来自第二终端设备的第二辅助信息中的资源对应的第二RSRP门限独立地进行更新。由此，能够兼顾不同接收设备的资源选择偏好，选择出所有接收设备都受到较小干扰的资源进行边链路发送，从而能够提高边链路传输的可靠性。
第二方面的实施例
本申请实施例提供一种资源选择方法，从第三终端设备进行说明，与第一方面的实施例相同的内容不再赘述。第二方面的实施例可以与第一方面的实施例结合起来执行， 也可以单独执行。
在一些实施例中，第三终端设备根据自身感知结果对所述第三终端设备的资源对应的第三参考信号接收功率(RSRP)门限进行更新。
例如，发送设备B自身也进行感知，也具有用于资源排除的RSRP门限，即发送设备的RSRP门限(第三RSRP门限)。发送设备B对接收设备A的RSRP门限(第一RSRP门限)、接收设备C的RSRP门限(第二RSRP门限)和自身的RSRP门限(第三RSRP门限)独立进行更新。
一方面，对接收设备上报的资源进行排除，可以保护接收设备的接收(或者发送设备的发送)不受到干扰。另一方面，对发送设备感知的资源进行排除，还可以避免对其他设备产生干扰。对接收设备的RSRP门限和发送设备的RSRP门限独立进行更新，可以更加灵活地在以上两方面之间进行平衡和折中。
在一些实施例中，相比于所述第三参考信号接收功率(RSRP)门限，所述第一参考信号接收功率(RSRP)门限和/或所述第二参考信号接收功率(RSRP)门限被所述第三终端设备优先更新。
例如，接收设备A和/或C的RSRP门限(第一RSRP门限和/或第二RSRP门限)可以优先于发送设备B的RSRP门限(第三RSRP门限)得到更新。通过这种方式，可以优先保护接收设备的接收。例如，可以交替地更新发送设备和接收设备的RSRP门限，直到剩余的候选资源数大于等于某一门限。
在一些实施例中，第三终端设备在候选资源个数没有达到要求的情况下，增加所述第一参考信号接收功率(RSRP)门限和/或所述第二参考信号接收功率(RSRP)门限并继续进行资源选择或重选；所述第二终端设备在候选资源个数仍没有达到要求的情况下，增加所述第三参考信号接收功率(RSRP)门限并继续进行资源选择或重选。
图6是本申请实施例的资源选择方法的一示意图，由发送设备执行该资源选择方法；其中将与该发送设备距离较近的接收设备称为“近端”接收设备，将与该发送设备距离较远的接收设备称为“远端”接收设备。
如图6所示，该方法包括：
601，将S A初始化为包括所有候选资源的集合；
602，如果候选资源R x,y与近端(或远端)接收设备上报的资源重叠，且该资源的RSRP大于RSRP门限Th0(或Th1)，则从S A中排除R x,y；
603，确定S A中的候选资源数是否大于门限，如果是则执行604，否则执行605；
604，将S B初始化为S B＝S A；
605，确定更新近端接收设备的RSRP门限还是更新远端接收设备的RSRP门限(更新交替地进行)；
例如，如果605是第1次执行，则可以确定更新近端接收设备的RSRP门限Th0，并执行606；如果605是第2次执行，则可以确定更新远端接收设备的RSRP门限Th1，并执行607；如果605是第3次执行，则可以确定更新近端接收设备的RSRP门限Th0，并执行606；……以此类推。
606，近端接收设备的RSRP门限Th0＝Th0+3dB；
607，远端接收设备的RSRP门限Th1＝Th1+3dB。
如图6所示，该方法还包括：
608，如果候选资源R x,y与发送设备自身感知到的资源重叠，且该资源的RSRP大于RSRP门限Th2，则从S B中排除R x,y；
609，确定S B中的候选资源数是否大于门限，如果是则执行612，否则执行610；
610，确定更新接收设备的RSRP门限还是更新接收设备的RSRP门限(更新交替地进行)；
例如，如果610是第1次执行，则可以确定执行605；如果610是第2次执行，则可以确定更新发送设备的RSRP门限Th2，并执行611；如果610是第3次执行，则可以确定执行605；……以此类推。
611，发送设备的RSRP门限Th2＝Th2+3dB；
612，将S B上报给高层。
值得注意的是，以上附图6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6的记载。
如图6所示，可以优先对接收设备上报的资源进行排除，对接收设备的RSRP门限交替进行更新，直到候选资源数目大于等于某一门限。然后对发送设备感知到的资源进行排除，对发送设备的RSRP门限进行更新，或者对发送设备和接收设备的RSRP门限交替进行更新，直到候选资源数目大于等于某一门限。在对接收设备的RSRP门限交替进行更新的过程中，可以使用第一方面的实施例所述的方法，优先更新与发送设备之间的距离较小(或RSRP较大)的接收设备的RSRP门限。
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，第三终端设备在资源选择或重选时，对来自第一终端设备的第一辅助信息中的资源对应的第一RSRP门限和来自第二终端设备的第二辅助信息中的资源对应的第二RSRP门限独立地进行更新。由此，能够兼顾不同接收设备的资源选择偏好，选择出所有接收设备都受到较小干扰的资源进行边链路发送，从而能够提高边链路传输的可靠性。
此外，第三终端设备根据自身感知结果对所述第三终端设备的资源对应的第三参考信号接收功率(RSRP)门限进行更新；由此，既可以避免接收设备受到严重干扰，又可以避免对其他设备产生严重干扰。
第三方面的实施例
本申请实施例提供一种资源选择方法，从第三终端设备进行说明，与第一、二方面的实施例相同的内容不再赘述。第三方面的实施例可以与第一、二方面的实施例结合起来执行，也可以单独执行。
在一些实施例中，第三终端设备根据所述第一辅助信息和所述第二辅助信息进行资源选择或重选；以及所述第三终端设备在候选资源个数没有达到要求的情况下，使用自身感知结果以继续进行资源选择或重选。
例如，在排除多个接收设备上报的需要排除的资源后，如果候选资源数小于某一门限，则发送设备基于自身感知结果进行资源选择。换句话说，此时发送设备回退到传统的mode 2资源选择，即不存在设备间协作时的资源选择。通过这种方法，实际上将问题转化成了不存在辅助信息时的资源选择，从而可以使用相关技术解决。
在一些实施例中，第三终端设备根据所述第一辅助信息和所述第二辅助信息进行资源选择或重选；以及所述第三终端设备在候选资源个数没有达到要求的情况下，使用来自距离最远或参考信号接收功率(RSRP)最小的终端设备的辅助信息以及自身感知结果以继续进行资源选择或重选。
例如，在排除多个接收设备上报的需要排除的资源后，如果候选资源数小于某一门限，则发送设备使用与自己之间的距离最大的或与自己之间的RSRP最小的接收设备的辅助信息，以及自身的感知结果进行资源选择。通过这种方法，实际上将问题转化成了 仅存在来自一个终端设备的辅助信息时的资源选择，从而可以使用相关技术解决。
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，第三终端设备在资源选择时可以灵活决定是否使用辅助信息，或者使用哪个终端设备的辅助信息，通过对辅助信息的取舍，可以回退到不存在辅助信息，或者只存在来自一个终端设备的辅助信息的场景，从而可以利用相关技术进行资源选择，解决多个终端设备的感知结果不一致的问题。
第四方面的实施例
本申请实施例提供一种资源指示方法。第四方面的实施例可以与第一至三方面的实施例结合起来执行，也可以单独执行。
假设设备A1发送周期性业务，设备B也发送周期性业务，资源选择的结果可能是二者始终在相同的时间进行发送。一方面，这会导致设备A1和设备B彼此无法接收对方发送的信息，即产生半双工问题。另一方面，设备A1和设备B的发送资源可能在频域上发生重叠，这会导致设备A1和设备B的发送始终发生碰撞，即产生连续碰撞问题。
由于设备的半双工限制，设备A1和设备B彼此无法感知到对方的存在，因此无法通过感知避免上述问题。针对上述问题之一，本申请实施例提供一种资源指示方法。
在一些实施例中，第一终端设备在第一时间单元发送周期性业务；以及所述第一终端设备在不同于所述第一时间单元的第二时间单元发送辅助信息；其中所述辅助信息指示所述周期性业务所占用的资源信息。
例如，第一终端设备(设备A1)在与所发送的周期性业务不同的时间单元上发送辅助信息，辅助信息指示设备A1的发送所占用的资源。例如，第二时间单元在两个所述第一时间单元之间。又例如，在两个所述第一时间单元之间可以有一个或多个第二时间单元。时间单元可以是子帧、时隙、或者符号等等。
在一些实施例中，所述第一终端设备还在所述周期性业务的优先级高于门限的情况下，在所述第二时间单元发送所述辅助信息。例如，设备A1在发送优先级高于某一门限时发送辅助信息。
图7是本申请实施例的资源指示的一示例图。如图7所示，设备A1在某两次周期发送之间额外发送辅助信息，该辅助信息指示设备A1的发送资源(预留资源)，从而 能够通知设备B进行资源重选，避开设备A1的发送。
另外，设备A1可以基于发送优先级确定是否发送辅助信息。例如，设备A1在发送优先级高于某一门限时发送辅助信息，否则不发送辅助信息，从而可以优先保护高优先级业务的发送不受到碰撞。
在一些实施例中，辅助信息可以使用1st stage SCI指示设备A1预留的资源，从而可以重用Rel-16 NR V2X中使用SCI指示预留资源的方式，减小标准化影响。例如，周期性业务的某次发送为PSCCH 1/PSSCH 1，辅助信息是在PSCCH 1/PSSCH 1之前发送的PSCCH 2/PSSCH 2，其中PSSCH 2是PSSCH 1的副本，PSCCH 2(SCI 2)的时频资源字段指示预留PSCCH 1/PSSCH 1，周期字段置零，其他字段与PSCCH 1(SCI 1)相同。辅助信息也可以使用2nd stage SCI、或MAC CE、或PC5-RRC等承载设备A1预留的资源。辅助信息也可以包括设备A1的发送优先级、RSRP等。
在一些实施例中，对于设备A1发送辅助信息的次数以及时频位置不做限制，例如设备A1的发送次数可以是预配置或配置的，或者，设备A1可以基于相关的资源选择步骤确定发送辅助信息的具体时频位置，其中资源选择需要能够保证辅助信息与周期性业务在不同的时间单元上发送。
在一些实施例中，设备A1在某次周期性业务发送之前发送一次或多次辅助信息。设备A1可以根据发送优先级确定是否发送多次辅助信息。例如，当发送优先级高于某一门限时，设备A1发送多次辅助信息。通过这种方法，设备A1可以提前通知设备B潜在的碰撞。
设备B在接收到设备A1发送的辅助信息后，可以基于相关的资源选择方法进行资源重选，例如，当设备A1的发送优先级高于自身的发送优先级和/或设备A1的RSRP高于某一门限时进行资源重选；当设备A1是设备B的接收方时，设备B基于资源重选选择与设备A1不同的时间单元进行发送。
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。
第五方面的实施例
本申请实施例提供一种资源指示方法。第五方面的实施例可以与第一至四方面的实施例结合起来执行，也可以单独执行。
在一些实施例中，第三终端设备接收来自第一终端设备的第一边链路控制信息；所述第三终端设备接收来自第二终端设备的第二边链路控制信息；以及所述第三终端设备根据所述第一边链路控制信息指示的第一优先级和所述第二边链路控制信息指示的第二优先级，发送辅助信息；其中所述辅助信息指示用于发送的资源信息。
具体地，假如设备A2接收到来自设备A1的SCI和来自设备B的SCI，设备A2发现设备A1和设备B发生半双工问题或碰撞问题，则设备A2根据SCI指示的优先级确定向优先级低的设备发送辅助信息，辅助信息包括优先级高的设备所占用的资源。
假如设备A2接收到来自设备A1的SCI 1，则该SCI 1指示的优先级是设备A1的发送优先级。假如设备A2接收到来自设备B的SCI 2，则该SCI 2指示的优先级是设备B的发送优先级。
例如，所述第三终端设备在所述第一优先级大于所述第二优先级的情况下，向所述第二终端设备发送所述辅助信息；其中所述辅助信息指示所述第一终端设备用于发送的资源信息。该发送可以是周期性业务，也可以是非周期性业务。
再例如，所述第三终端设备在所述第一优先级小于所述第二优先级的情况下，向所述第一终端设备发送所述辅助信息；其中所述辅助信息指示所述第二终端设备用于发送的资源信息。该发送可以是周期性业务，也可以是非周期性业务。
图8是本申请实施例的资源指示的另一示例图。如图8所示，假设设备A1和设备B发送周期性业务。设备A2接收到设备A1和设备B的SCI，从而能够发现设备A1和设备B发生上述半双工问题或连续碰撞问题。设备A2根据SCI指示的设备A1和设备B的发送优先级，可以确定向哪个设备发送辅助信息。例如，设备A2向发送优先级低的设备发送辅助信息，通知发送优先级低的设备进行资源重选，避开发送优先级高的设备的发送；该辅助信息包括了发送优先级高的设备所占用的发送资源。
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。
第六方面的实施例
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(例如前述的第三终端设备)，也可以是配置于终端设备的某个或某些部件或者组件，与第一至五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：
接收单元901，其接收第一终端设备发送的第一辅助信息；并接收第二终端设备发送的第二辅助信息；以及
选择单元902，其在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率门限和所述第二辅助信息中的资源对应的第二参考信号接收功率门限独立地进行更新。
在一些实施例中，如图9所示，资源选择装置900还可以包括：
确定单元903，其确定第三终端设备与所述第一终端设备之间的第一距离，所述第三终端设备与所述第二终端设备之间的第二距离；以及根据所述第一距离和所述第二距离，确定所述第一参考信号接收功率门限和所述第二参考信号接收功率门限的更新顺序。
在一些实施例中，在所述第一距离小于或等于所述第二距离的情况下，或者在所述第一距离小于或等于距离门限值和/或所述第二距离大于所述距离门限值的情况下，所述选择单元902优先更新所述第一参考信号接收功率门限。
在一些实施例中，在所述第一距离大于所述第二距离的情况下，或者在所述第一距离大于距离门限值和/或所述第二距离小于或等于所述距离门限值的情况下，所述选择单元702优先更新所述第二参考信号接收功率门限。
在一些实施例中，所述确定单元903根据来自所述第一终端设备的边链路控制信息或者所述第一辅助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三终端设备之间的第一距离。
在一些实施例中，所述确定单元903根据来自所述第二终端设备的边链路控制信息或者所述第二辅助信息中的位置信息或区域标识，来确定所述第二终端设备和所述第三终端设备之间的第二距离。
在一些实施例中，确定单元903确定来自所述第一终端设备的第一信号的强度，来自所述第二终端设备的第二信号的强度；以及根据所述第一信号的强度和所述第二信号的强度，确定所述第一参考信号接收功率门限和所述参考信号接收功率门限的更新顺序。
在一些实施例中，在所述第一信号的强度大于所述第二信号的强度的情况下，或者在所述第一信号的强度大于强度门限值和/或所述第二信号的强度小于或等于所述强度门限值的情况下，所述选择单元902优先更新所述第一参考信号接收功率门限。
在一些实施例中，在所述第一信号的强度小于或等于所述第二信号的强度的情况下， 或者在所述第一信号的强度小于或等于强度门限值和/或所述第二信号的强度大于所述强度门限值的情况下，所述选择单元902优先更新所述第二参考信号接收功率门限。
在一些实施例中，所述确定单元903根据对来自所述第一终端设备的边链路控制信息或者所述第一辅助信息的参考信号接收功率的测量，来确定所述第一终端设备和所述第三终端设备之间的第一信号的强度。
在一些实施例中，所述确定单元903根据对来自所述第二终端设备的边链路控制信息或者所述第二辅助信息的参考信号接收功率的测量，来确定所述第二终端设备和所述第三终端设备之间的第二信号的强度。
在一些实施例中，所述选择单元902还根据第三终端设备自身感知结果对所述第三终端设备的资源对应的第三参考信号接收功率门限进行更新。
在一些实施例中，相比于所述第三参考信号接收功率门限，所述第一参考信号接收功率门限和/或所述第二参考信号接收功率门限被所述选择单元902优先更新。
在一些实施例中，所述选择单元902在候选资源个数没有达到要求的情况下，增加所述第一参考信号接收功率门限和/或所述第二参考信号接收功率门限并继续进行资源选择或重选。
在一些实施例中，所述选择单元902在候选资源个数仍没有达到要求的情况下，增加所述第三参考信号接收功率门限并继续进行资源选择或重选。
在一些实施例中，所述选择单元902根据所述第一辅助信息和所述第二辅助信息进行资源选择或重选；以及在候选资源个数没有达到要求的情况下，使用自身感知结果以继续进行资源选择或重选。
在一些实施例中，所述选择单元902根据所述第一辅助信息和所述第二辅助信息进行资源选择或重选；以及在候选资源个数没有达到要求的情况下，使用来自距离最远或参考信号接收功率最小的终端设备的辅助信息以及自身感知结果以继续进行资源选择或重选。
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，第三终端设备在资源选择或重选时，对来自第一终端设备的第一辅助信息中的资源对应的第一RSRP门限和来自第二终端设备的第二辅助信息中的资源对应的第二RSRP门限独立地进行更新。由此，能够兼顾不同接收设备的资源选择偏好，选择出所有接收设备都受到较小干扰的资源进行边链路发送，从而能够提高边链路传输的可靠性。
第七方面的实施例
本申请实施例还提供一种通信系统，可以参考图1，与第一方面至第六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，其发送第一辅助信息；
第二终端设备，其发送第二辅助信息；以及
第三终端设备，其在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率门限和所述第二辅助信息中的资源对应的第二参考信号接收功率门限独立地进行更新。
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10是本申请实施例的网络设备的构成示意图。如图10所示，网络设备1000可以包括：处理器1010(例如中央处理器CPU)和存储器1020；存储器1020耦合到处理器1010。其中该存储器1020可存储各种数据；此外还存储信息处理的程序1030，并且在处理器1010的控制下执行该程序1030。
此外，如图10所示，网络设备1000还可以包括：收发机1040和天线1050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1000也并不是必须要包括图10中所示的所有部件；此外，网络设备1000还可以包括图10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11是本申请实施例的终端设备的示意图。如图11所示，该终端设备1100可以包括处理器1110和存储器1120；存储器1120存储有数据和程序，并耦合到处理器1110。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1110可以被配置为执行程序而实现如第一至三方面的实施例所述的资源选择方法。例如处理器1110可以被配置为进行如下的控制：接收第一终端设备发送的第一辅助信息；接收第二终端设备发送的第二辅助信息；以及在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率(RSRP)门限和所述第二辅助信息中的资源对应的第二参考信号接收功率(RSRP)门限独立地进行更新。
例如，处理器1110可以被配置为执行程序而实现如第四方面的实施例所述的资源指示方法。例如处理器1110可以被配置为进行如下的控制：在第一时间单元发送周期性业务；以及在不同于所述第一时间单元的第二时间单元发送辅助信息；其中所述辅助信息指示所述周期性业务所占用的资源信息。
例如，处理器1110可以被配置为执行程序而实现如第五方面的实施例所述的资源指示方法。例如处理器1110可以被配置为进行如下的控制：接收来自第一终端设备的第一边链路控制信息；接收来自第二终端设备的第二边链路控制信息；以及根据所述第一边链路控制信息指示的第一优先级和所述第二边链路控制信息指示的第二优先级，发送辅助信息；其中所述辅助信息指示用于发送的资源信息。
如图11所示，该终端设备1100还可以包括：通信模块1130、输入单元1140、显示器1150、电源1160。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1100也并不是必须要包括图11中所示的所有部件，上述部件并不是必需的；此外，终端设备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至三方面的实施例所述的资源选择方法，或者执行第四或五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一至三方面的实施例所述的资源选择方法，或者执行第四或五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：
第三终端设备接收第一终端设备发送的第一辅助信息；
所述第三终端设备接收第二终端设备发送的第二辅助信息；以及
所述第三终端设备在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率(RSRP)门限和所述第二辅助信息中的资源对应的第二参考信号接收功率(RSRP)门限独立地进行更新。
附记2.根据附记1所述的方法，其中，所述方法还包括：
所述第三终端设备确定所述第三终端设备与所述第一终端设备之间的第一距离，以及所述第三终端设备与所述第二终端设备之间的第二距离；以及
根据所述第一距离和所述第二距离，确定所述第一参考信号接收功率(RSRP)门限和所述第二参考信号接收功率(RSRP)门限的更新顺序。
附记3.根据附记2所述的方法，其中，在所述第一距离小于或等于所述第二距离的情况下，或者在所述第一距离小于或等于距离门限值和/或所述第二距离大于所述距离门限值的情况下，所述第三终端设备优先更新所述第一参考信号接收功率(RSRP)门限。
附记4.根据附记2所述的方法，其中，在所述第一距离大于所述第二距离的情况下，或者在所述第一距离大于距离门限值和/或所述第二距离小于或等于所述距离门限值的情况下，所述第三终端设备优先更新所述第二参考信号接收功率(RSRP)门限。
附记5.根据附记2至4任一项所述的方法，其中，所述第三终端设备根据来自所述第一终端设备的边链路控制信息或者所述第一辅助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三终端设备之间的第一距离。
附记6.根据附记2至4任一项所述的方法，其中，所述第三终端设备根据来自所述第二终端设备的边链路控制信息或者所述第二辅助信息中的位置信息或区域标识，来确定所述第二终端设备和所述第三终端设备之间的第二距离。
附记7.根据附记1所述的方法，其中，所述方法还包括：
所述第三终端设备确定来自所述第一终端设备的第一信号的强度，以及来自所述第二终端设备的第二信号的强度；以及
根据所述第一信号的强度和所述第二信号的强度，确定所述第一参考信号接收功率(RSRP)门限和所述参考信号接收功率(RSRP)门限的更新顺序。
附记8.根据附记7所述的方法，其中，在所述第一信号的强度大于所述第二信号的强度的情况下，或者在所述第一信号的强度大于强度门限值和/或所述第二信号的强度小于或等于所述强度门限值的情况下，所述第三终端设备优先更新所述第一参考信号接 收功率(RSRP)门限。
附记9.根据附记7所述的方法，其中，在所述第一信号的强度小于或等于所述第二信号的强度的情况下，或者在所述第一信号的强度小于或等于强度门限值和/或所述第二信号的强度大于所述强度门限值的情况下，所述第三终端设备优先更新所述第二参考信号接收功率(RSRP)门限。
附记10.根据附记7至9任一项所述的方法，其中，所述第三终端设备根据对来自所述第一终端设备的边链路控制信息或者所述第一辅助信息的参考信号接收功率(RSRP)的测量，来确定所述第一终端设备和所述第三终端设备之间的第一信号的强度。
附记11.根据附记7至9任一项所述的方法，其中，所述第三终端设备根据对来自所述第二终端设备的边链路控制信息或者所述第二辅助信息的参考信号接收功率(RSRP)的测量，来确定所述第二终端设备和所述第三终端设备之间的第二信号的强度。
附记12.根据附记1至11任一项所述的方法，其中，所述方法还包括：
所述第三终端设备根据自身感知结果对所述第三终端设备的资源对应的第三参考信号接收功率(RSRP)门限进行更新。
附记13.根据附记12所述的方法，其中，相比于所述第三参考信号接收功率(RSRP)门限，所述第一参考信号接收功率(RSRP)门限和/或所述第二参考信号接收功率(RSRP)门限被所述第三终端设备优先更新。
附记14.根据附记12或13所述的方法，其中，所述方法还包括：
所述第三终端设备在候选资源个数没有达到要求的情况下，增加所述第一参考信号接收功率(RSRP)门限和/或所述第二参考信号接收功率(RSRP)门限并继续进行资源选择或重选。
附记15.根据附记14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个数仍没有达到要求的情况下，增加所述第三参考信号接收功率(RSRP)门限并继续进行资源选择或重选。
附记16.根据附记1至15任一项所述的方法，其中，所述方法还包括：
所述第三终端设备根据所述第一辅助信息和所述第二辅助信息进行资源选择或重选；以及
所述第三终端设备在候选资源个数没有达到要求的情况下，使用自身感知结果以继 续进行资源选择或重选。
附记17.根据附记1至15任一项所述的方法，其中，所述方法还包括：
所述第三终端设备根据所述第一辅助信息和所述第二辅助信息进行资源选择或重选；以及
所述第三终端设备在候选资源个数没有达到要求的情况下，使用来自距离最远或参考信号接收功率(RSRP)最小的终端设备的辅助信息以及自身感知结果以继续进行资源选择或重选。
附记18.一种资源指示方法，包括：
第一终端设备在第一时间单元发送周期性业务；以及
所述第一终端设备在不同于所述第一时间单元的第二时间单元发送辅助信息；其中所述辅助信息指示所述周期性业务所占用的资源信息。
附记19.根据附记18所述的方法，其中，所述第一终端设备还在所述周期性业务的优先级高于门限的情况下，在所述第二时间单元发送所述辅助信息。
附记20.根据附记18或19所述的方法，其中，所述第二时间单元在两个所述第一时间单元之间。
附记21.一种资源指示方法，包括：
第三终端设备接收来自第一终端设备的第一边链路控制信息；
所述第三终端设备接收来自第二终端设备的第二边链路控制信息；以及
所述第三终端设备根据所述第一边链路控制信息指示的第一优先级和所述第二边链路控制信息指示的第二优先级，发送辅助信息；其中所述辅助信息指示用于发送的资源信息。
附记22.根据附记19所述的方法，其中，所述第三终端设备在所述第一优先级大于所述第二优先级的情况下，向所述第二终端设备发送所述辅助信息；其中所述辅助信息指示所述第一终端设备用于发送的资源信息。
附记23.根据附记19所述的方法，其中，所述第三终端设备在所述第一优先级小于所述第二优先级的情况下，向所述第一终端设备发送所述辅助信息；其中所述辅助信息指示所述第二终端设备用于发送的资源信息。
附记24.一种终端设备，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1至17任一项所述的资源选择方法，或者如附记18至23任一项所述的资源指示方法。

Claims (20)

  1. 一种资源选择装置，包括：
    接收单元，其接收第一终端设备发送的第一辅助信息；并接收第二终端设备发送的第二辅助信息；以及
    选择单元，其在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率门限和所述第二辅助信息中的资源对应的第二参考信号接收功率门限独立地进行更新。
  2. 根据权利要求1所述的装置，其中，所述装置还包括：
    确定单元，其确定第三终端设备与所述第一终端设备之间的第一距离，所述第三终端设备与所述第二终端设备之间的第二距离；以及根据所述第一距离和所述第二距离，确定所述第一参考信号接收功率门限和所述第二参考信号接收功率门限的更新顺序。
  3. 根据权利要求2所述的装置，其中，在所述第一距离小于或等于所述第二距离的情况下，或者在所述第一距离小于或等于距离门限值和/或所述第二距离大于所述距离门限值的情况下，所述选择单元优先更新所述第一参考信号接收功率门限。
  4. 根据权利要求2所述的装置，其中，在所述第一距离大于所述第二距离的情况下，或者在所述第一距离大于距离门限值和/或所述第二距离小于或等于所述距离门限值的情况下，所述选择单元优先更新所述第二参考信号接收功率门限。
  5. 根据权利要求2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或者所述第一辅助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三终端设备之间的第一距离。
  6. 根据权利要求2所述的装置，其中，所述确定单元根据来自所述第二终端设备的边链路控制信息或者所述第二辅助信息中的位置信息或区域标识，来确定所述第二终端设备和所述第三终端设备之间的第二距离。
  7. 根据权利要求1所述的装置，其中，所述装置还包括：
    确定单元，其确定来自所述第一终端设备的第一信号的强度，来自所述第二终端设备的第二信号的强度；以及根据所述第一信号的强度和所述第二信号的强度，确定所述第一参考信号接收功率门限和所述参考信号接收功率门限的更新顺序。
  8. 根据权利要求7所述的装置，其中，在所述第一信号的强度大于所述第二信号 的强度的情况下，或者在所述第一信号的强度大于强度门限值和/或所述第二信号的强度小于或等于所述强度门限值的情况下，所述选择单元优先更新所述第一参考信号接收功率门限。
  9. 根据权利要求7所述的装置，其中，在所述第一信号的强度小于或等于所述第二信号的强度的情况下，或者在所述第一信号的强度小于或等于强度门限值和/或所述第二信号的强度大于所述强度门限值的情况下，所述选择单元优先更新所述第二参考信号接收功率门限。
  10. 根据权利要求7所述的装置，其中，所述确定单元根据对来自所述第一终端设备的边链路控制信息或者所述第一辅助信息的参考信号接收功率的测量，来确定所述第一终端设备和第三终端设备之间的第一信号的强度。
  11. 根据权利要求7所述的装置，其中，所述确定单元根据对来自所述第二终端设备的边链路控制信息或者所述第二辅助信息的参考信号接收功率的测量，来确定所述第二终端设备和第三终端设备之间的第二信号的强度。
  12. 根据权利要求1所述的装置，其中，所述选择单元还根据第三终端设备自身感知结果对所述第三终端设备的资源对应的第三参考信号接收功率门限进行更新。
  13. 根据权利要求12所述的装置，其中，相比于所述第三参考信号接收功率门限，所述第一参考信号接收功率门限和/或所述第二参考信号接收功率门限被所述选择单元优先更新。
  14. 根据权利要求12所述的装置，其中，所述选择单元在候选资源个数没有达到要求的情况下，增加所述第一参考信号接收功率门限和/或所述第二参考信号接收功率门限并继续进行资源选择或重选。
  15. 根据权利要求14所述的装置，其中，所述选择单元在候选资源个数仍没有达到要求的情况下，增加所述第三参考信号接收功率门限并继续进行资源选择或重选。
  16. 根据权利要求1所述的装置，其中，所述选择单元根据所述第一辅助信息和所述第二辅助信息进行资源选择或重选；以及在候选资源个数没有达到要求的情况下，使用自身感知结果以继续进行资源选择或重选。
  17. 根据权利要求1所述的装置，其中，所述选择单元根据所述第一辅助信息和所述第二辅助信息进行资源选择或重选；以及在候选资源个数没有达到要求的情况下，使用来自距离最远或参考信号接收功率最小的终端设备的辅助信息以及自身感知结果以继续进行资源选择或重选。
  18. 一种资源选择方法，包括：
    第三终端设备接收第一终端设备发送的第一辅助信息；
    所述第三终端设备接收第二终端设备发送的第二辅助信息；以及
    所述第三终端设备在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率门限和所述第二辅助信息中的资源对应的第二参考信号接收功率门限独立地进行更新。
  19. 根据权利要求18所述的方法，其中，所述方法还包括：
    所述第三终端设备确定所述第三终端设备与所述第一终端设备之间的第一距离，以及所述第三终端设备与所述第二终端设备之间的第二距离；以及
    根据所述第一距离和所述第二距离，确定所述第一参考信号接收功率门限和所述第二参考信号接收功率门限的更新顺序。
  20. 一种通信系统，包括：
    第一终端设备，其发送第一辅助信息；
    第二终端设备，其发送第二辅助信息；以及
    第三终端设备，其在资源选择或重选时，对所述第一辅助信息中的资源对应的第一参考信号接收功率门限和所述第二辅助信息中的资源对应的第二参考信号接收功率门限独立地进行更新。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108809603A (zh) * 2017-05-05 2018-11-13 北京三星通信技术研究有限公司 用于数据传输的方法及用户设备
US20200169907A1 (en) * 2018-11-26 2020-05-28 Shanghai Langbo Communication Technology Company Limited Method and device in a node used for wireless communication
CN111436033A (zh) * 2019-01-11 2020-07-21 中国移动通信有限公司研究院 传输的操作方法及终端

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108809603A (zh) * 2017-05-05 2018-11-13 北京三星通信技术研究有限公司 用于数据传输的方法及用户设备
US20200169907A1 (en) * 2018-11-26 2020-05-28 Shanghai Langbo Communication Technology Company Limited Method and device in a node used for wireless communication
CN111436033A (zh) * 2019-01-11 2020-07-21 中国移动通信有限公司研究院 传输的操作方法及终端

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
INTERDIGITAL, INC.: "Remaining Issues on NR Sidelink Mode 2 Resource Allocation", 3GPP DRAFT; R1-2004295, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20200525 - 20200605, 15 May 2020 (2020-05-15), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051886039 *
OPPO: "Discussion on remaining open issue for mode 2", 3GPP DRAFT; R1-2000493, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20200224 - 20200306, 15 February 2020 (2020-02-15), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051853330 *
TCL COMMUNICATION: "Feasibility and benefits for Mode 2 enhancements", 3GPP DRAFT; R1-2005774, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20200817 - 20200828, 7 August 2020 (2020-08-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051915031 *

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