WO2022236587A1 - Procédé et appareil de collaboration entre dispositifs, et procédé et appareil de sélection de ressources - Google Patents

Procédé et appareil de collaboration entre dispositifs, et procédé et appareil de sélection de ressources Download PDF

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Publication number
WO2022236587A1
WO2022236587A1 PCT/CN2021/092791 CN2021092791W WO2022236587A1 WO 2022236587 A1 WO2022236587 A1 WO 2022236587A1 CN 2021092791 W CN2021092791 W CN 2021092791W WO 2022236587 A1 WO2022236587 A1 WO 2022236587A1
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signal
terminal device
threshold
resource
interference
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PCT/CN2021/092791
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English (en)
Chinese (zh)
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张健
纪鹏宇
王昕�
小泉亮
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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/CN2021/092791 priority Critical patent/WO2022236587A1/fr
Publication of WO2022236587A1 publication Critical patent/WO2022236587A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

Definitions

  • the embodiment of the present application relates to the technical field of communications.
  • Vehicle to Everything (V2X, Vehicle to Everything) is a vehicle communication technology. Compared with cellular communication using Uu link, the sending device of V2X communicates directly with the receiving device through sidelink.
  • New Radio (NR New Radio) V2X is an important project of 5G Rel-16. Compared with Rel-14/Rel-15 Long Term Evolution (LTE, Long Term Evolution) V2X, NR V2X can support more scenarios and services, and can Meet higher performance requirements.
  • the physical channels defined by Rel-16 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 the 1st stage SCI is mainly used to reserve resources.
  • PSSCH carries 2nd stage SCI and transport block (TB, Transport Block), where 2nd stage SCI is mainly used for TB demodulation.
  • PSFCH carries side link 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)
  • terminal devices 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 autonomous resource selection Mode 2, inter-UE coordination has also become one of the research contents of Rel-17 V2X. The specific way of collaboration between devices, etc., is a problem to be studied and solved.
  • embodiments of the present application provide an inter-device collaboration method, a resource selection method, and an apparatus.
  • a method for inter-device collaboration including:
  • the first terminal device determines the sending limit for the second terminal device Collaboration information for link information
  • an apparatus for collaboration between devices including:
  • a processing unit which determines the transmission edge for the second terminal device according to the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device Collaboration information for link information;
  • a sending unit configured to send the cooperation information to the second terminal device.
  • a resource selection method including:
  • the first terminal device receives the first signal from the second terminal device
  • a resource selection device including:
  • a receiving unit that receives the first signal from the second terminal device and receives the second signal from the third terminal device
  • a processing unit configured to select side link resources according to the signal strength information of the first signal, the interference strength information and/or the noise strength information of the second signal.
  • a communication system including:
  • the first terminal device determines, based on the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device, for the second terminal device sending cooperation information of side link information; and sending the cooperation information to the second terminal device;
  • the first signal receives the second terminal device, and receives the second signal from the third terminal device; and according to the signal strength information of the first signal, the interference strength information of the second signal and/or Noise intensity information for side link resource selection.
  • the first terminal device according to the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device, Determine cooperation information for the second terminal device to send side link information. In this way, resources with relatively less interference can be selected, thereby improving the reliability of side link transmission.
  • Fig. 1 is the schematic diagram of the communication system of the embodiment of the present application.
  • FIG. 2 is an example diagram of collaboration between devices according to an embodiment of the present application
  • Fig. 3 is a schematic diagram of the variable useful signal strength of the embodiment of the present application.
  • FIG. 4 is a schematic diagram of a method for inter-device collaboration according to an embodiment of the present application.
  • Fig. 5 is a schematic diagram of the signal strength of the embodiment of the present application.
  • FIG. 6 is a schematic diagram of determining collaboration information according to an embodiment of the present application.
  • FIG. 7 is another schematic diagram of determining collaboration information according to an embodiment of the present application.
  • FIG. 8 is another schematic diagram of determining collaboration information according to an embodiment of the present application.
  • FIG. 9 is another schematic diagram of determining collaboration information according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of an apparatus for collaboration between devices according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a resource selection device according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a network device according to an embodiment of the present application.
  • FIG. 13 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 from the title, but do not indicate the spatial arrangement or time 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” and the like refer to the presence of stated features, elements, elements or components, but do not exclude 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 conforming to any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • LTE-A Long Term Evolution-A
  • LTE- Advanced Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to any stage of communication protocols, such as 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 that are currently known or will 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 equipment may include but not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile 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 not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include Remote Radio Head (RRH, Remote Radio Head) , a remote radio unit (RRU, Remote Radio Unit), a relay (relay) or a low-power node (such as femeto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • a low-power node such as 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” can 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 called a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, etc.
  • the terminal equipment may include but not limited to the following equipment: Cellular Phone (Cellular Phone), Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication equipment, handheld equipment, machine-type communication equipment, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.
  • Cellular Phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem wireless communication equipment
  • handheld equipment machine-type communication equipment
  • laptop computer Cordless phones
  • Cordless phones smartphones, smart watches, digital cameras, and more.
  • the terminal device can also be a machine or device for monitoring or measurement, such as but not limited to: a machine type communication (MTC, Machine Type Communication) terminal, Vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, etc.
  • MTC Machine Type Communication
  • Vehicle communication terminal device to device (D2D, Device to Device) terminal
  • M2M Machine to Machine
  • network side refers to one side of the network, which may be a certain base station, or may include one or more network devices as above.
  • user side or “terminal side” or “terminal device side” refers to a side of a user or a terminal, which may be a certain UE, or may include one or more terminal devices as above.
  • device may refer to network devices or terminal devices.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a case where a terminal device and a network device are taken as examples.
  • a communication system 100 may include a network device 101 and terminal devices 102 and 103.
  • FIG. 1 only uses two terminal devices and one network device as an example for illustration, but this embodiment of the present application is not limited thereto.
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communication
  • URLLC Ultra-Reliable and Low -Latency Communication
  • 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 thereto. Neither of the two terminal devices 102 and 103 may be within the coverage of the network device 101 , or one terminal device 102 may be within the coverage of the network device 101 while the other terminal device 103 is outside the coverage of the network device 101 .
  • side link transmission can be performed between 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 realize V2X communication, or both can perform side link transmission outside the coverage of the network device 101 to realize V2X
  • one terminal device 102 may be within the coverage of the network device 101 while the other terminal device 103 is outside the coverage of the network device 101 to perform side link transmission to realize V2X communication.
  • terminal devices 102 and/or 103 can independently select side link resources (i.e., use Mode 2), in which case the side link transmission can be independent of network device 101, that is, network device 101 is optional of.
  • side link resources i.e., use Mode 2
  • this embodiment of the present application can also combine the independent selection of side link resources (that is, Mode 2) and the allocation of side link resources by the network device (that is, Mode 1); this embodiment of the present application does not limit this.
  • terminal devices can obtain side link transmission resources through the process of sensing detection + resource selection, in which sensing can be performed continuously to obtain the occupancy of resources in the resource pool. For example, the terminal device may estimate the resource occupancy situation in the next period of time (called the selection window) according to the resource occupancy situation in the previous period of time (called the perception window).
  • the selection window the resource occupancy situation in the next period of time
  • the perception window the resource occupancy situation in the previous period of time
  • 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.
  • the steps of resource selection please refer to Section 8.1.4 of the standard TS 38.214 V16.2.0.
  • the hidden node problem occurs: device B sends side link information to device A, and there is an interference source device C around device A. Since device B cannot perceive device C, the transmission of device B will be interfered by device C; that is, device C can considered as a hidden node.
  • the independent resource selection of terminal devices is one of the reasons why Mode 2 has collision problems and half-duplex problems.
  • the introduction of inter-UE coordination on the basis of Mode 2 can additionally provide terminal devices with information that cannot be obtained by their own perception, thereby further avoiding collision problems and half-duplex problems.
  • inter-device collaboration has also become one of the research contents of Rel-17 V2X.
  • Inter-device collaboration requires the exchange of information between devices, which can be called coordination information.
  • Collaboration information can be used to enhance mode 2 resource selection.
  • the collaboration information may indicate (or include) resource information, that is, indicate a set of resources.
  • the collaboration information may indicate resources that are not tended to be used (or not recommended for use) and/or tended to be used (or recommended for use) obtained by the terminal device based on perception, and so on.
  • Fig. 2 is an example diagram of cooperation between devices according to the embodiment of the present application, where device C is a hidden node.
  • device A since device A can perceive device C, device A can send collaboration information to device B (recommend and/or not recommend resources used by device B). After receiving the cooperation information, device B can avoid the resources reserved by device C during resource selection, so as to avoid the aforementioned collision problem.
  • the traditional mode 2 resource selection will also face half-duplex problems.
  • device B and device C transmit at the same time slot at the same time. Due to the half-duplex limitation, device B and device C cannot receive the side link information sent by the other party, that is, a half-duplex problem occurs.
  • Device A receives the SCI sent by device B and device C, and can know that a half-duplex problem occurs between device B and device C, so device A can send cooperation information to device B and/or device C to notify device B and/or device C Perform retransmission or resource reselection.
  • receiving device A may send cooperation information including a resource set to sending device B.
  • the resource set may include resources recommended by device A and/or not recommended by device B.
  • the resource selection step of mode 2 can be reused, that is, device A and device B use the same resource selection step.
  • the resource selection is mainly based on the L1 RSRP. If the RSRP of a resource (indicating the interference received) is higher than the threshold, the resource is excluded.
  • device A may determine the signal-to-interference ratio (SIR, Signal to Interference Ratio) or signal-to-interference-noise ratio (SINR, Signal to Interference plus Noise Ratio) lower resources, which reduces the reliability of side link transmission.
  • SIR Signal to Interference Ratio
  • SINR Signal to Interference plus Noise Ratio
  • FIG. 3 is a schematic diagram of variable useful signal strength according to an embodiment of the present application.
  • the device A1 is closer to the device B, so the signal strength of the receiving device B is higher, and the device A2 is farther away from the device B, so the signal strength of the receiving device B is smaller.
  • the RSRP interference received
  • the SINR of this resource is very low relative to the small signal strength, which may cause demodulation failure, so this resource should still be a resource that is not recommended for use.
  • the traditional mode 2 cannot select resources based on useful signal strength, so device B may use resources with relatively large interference to send to device A, resulting in demodulation failure.
  • useful signal strength information is not available to the sender. For example, assuming that device B sends a broadcast, since the path loss and/or small-scale fading of each broadcast receiving device from device B is independent and unavailable to device B, device B cannot obtain itself to each receiving device Signal strength information for the device.
  • device A reuses mode 2 resource selection, it only selects resources based on interference strength without considering useful signal strength. After device A sends the cooperation information, the SINR of the resources selected by device B based on the cooperation information may still be low, thus affecting the reliability of transmission.
  • V2X is taken as an example to describe side links, but this application is not limited thereto, and can also be applied to side link transmission scenarios other than V2X.
  • sidelink and “V2X” are interchangeable
  • PSFCH and “sidelink feedback channel” are interchangeable
  • PSCCH and “Sidelink Control Channel” or “Sidelink Control Information” are interchangeable
  • PSSCH and “Sidelink Data Channel” or “Sidelink Data” are also interchangeable.
  • sending (transmitting) or receiving (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 (Sidelink transmission, also referred to as sidelink transmission) can be understood as PSCCH/PSSCH transmission or sidelink data/information transmission.
  • An embodiment of the present application provides a method for inter-device collaboration, which is described from a first terminal device.
  • the first terminal device can receive the side link information (which may include data, control information, etc.) sent by the second terminal device; from the perspective of side link information transmission, the second terminal device in the embodiment of the present application is a sending device (device B ), the first terminal device is a receiving device (device A), and the third terminal device is an interfering device (device C).
  • the first terminal device may send cooperation information (also referred to as auxiliary information or resource set) to the second terminal device.
  • the cooperation information may indicate the side link resource itself, and may also indicate information related to the side link resource, such as priority, RSRP measurement result, and the like.
  • the terms “collaboration information” and “assistant information” or “resource collection” may be interchanged without causing confusion.
  • FIG. 4 is a schematic diagram of a method for inter-device collaboration in an embodiment of the present application. As shown in FIG. 4, the method includes:
  • the first terminal device determines, according to the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device, the send the cooperation information of the side link information;
  • the first terminal device sends the cooperation information to the second terminal device.
  • the method may also include:
  • the first terminal device receives side link information sent by the second terminal device.
  • the information available to device A is not equivalent to the information available to device B.
  • device A can obtain some information that device B cannot obtain, such as signal strength information from device B to device A. Therefore, device A may also take signal strength information into consideration when determining recommended and/or non-recommended resources, that is, device A may utilize useful signal strength information when selecting resources.
  • receiving device A provides cooperation information to sending device B, which can assist device B to select better resources for sending.
  • the cooperation information includes: the first terminal device recommends a set of side link resources used by the second terminal device, and/or, the first terminal device does not recommend the second terminal A collection of sidelink resources used by the device.
  • the application is not limited thereto, for example, other information may also be included.
  • the signal strength information includes Layer 3 (L3) Reference Signal Received Power (RSRP) or Layer 1 ( L1) Reference Signal Received Power (RSRP).
  • L3 Layer 3
  • L1 Layer 1
  • RSRP Reference Signal Received Power
  • the first signal includes the physical side link control channel (PSCCH) and/or the physical side link shared channel (PSSCH) sent by the second terminal device; device A measures L3 RSRP or L1 based on device B's PSCCH/PSSCH RSRP. What device B sends is the useful signal of device A.
  • PSCCH physical side link control channel
  • PSSCH physical side link shared channel
  • the interference strength information includes a Layer 1 (L1) Reference Signal Received Power (RSRP) measured by the first terminal device based on the second signal sent by the third terminal device.
  • L1 Layer 1
  • RSRP Reference Signal Received Power
  • the second signal includes a Physical Sidelink Control Channel (PSCCH) and/or a Physical Sidelink Shared Channel (PSSCH) sent by the third terminal device.
  • PSDCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • Device A measures L1 RSRP based on Device C's PSCCH/PSSCH.
  • Device C's transmission is interference with device A.
  • the signal strength can be derived from the L3 RSRP or L1 RSRP measured based on the PSCCH/PSSCH of device B, and the signal strength is recorded as S; the interference strength can be derived from the L1 RSRP measured based on the PSCCH/PSSCH of device C, and the interference strength is recorded as for I.
  • the units of S and I can be dBm or watts (W). S belongs to the signal part (signal strength information), and I belongs to the interference part.
  • S includes at least one of the following information: transmit power of device B, path loss, and small-scale fading.
  • Signal strength can also be derived from sl-P0-PSSCH-PSCCH.
  • sl-P0-PSSCH-PSCCH represents the target power of side link power control.
  • the embodiment of the present application does not limit how to derive S and I.
  • FIG. 5 is a schematic diagram of signal strength according to an embodiment of the present application.
  • device A measures L3 RSRP based on resource 1, but device A needs to derive S of resource 2. Since the resource sizes of resource 1 and resource 2 are different in frequency domain, necessary scaling or Normalized processing.
  • the first terminal device calculates the signal-to-interference ratio (SIR) of the first resource according to the signal strength information of the first signal and the interference strength information of the second signal, or calculates the signal-to-interference ratio (SIR) of the first resource according to the signal strength information of the first signal and the second
  • SIR signal-to-interference ratio
  • SINR signal-to-interference-noise ratio
  • N0 represents the noise power
  • the units of S, I and N0 are watts.
  • the device A can estimate the SINR or the SIR for the resource.
  • a resource may be reserved by multiple devices C, that is, interfered by multiple devices C.
  • I can optionally be calculated to be equal to the sum of the interference of multiple devices C.
  • the first signal includes request signaling sent by the second terminal device for triggering the first terminal device to send cooperation information, or side link data sent by the second terminal device.
  • Device A transmits measurement S based on device B's transmission.
  • device B sends a request signaling to trigger device A to report cooperation information
  • device A can measure S based on the request signaling sent by device B.
  • device A finds that device B collides with other devices or has a half-duplex problem, thus triggering the report of cooperation information, then device A can PSCCH/PSSCH measurement S.
  • device A measures S using the same method as measuring L3 RSRP in side link power control, that is, S is equal to L3 RSRP.
  • device A may continuously update S. For example, device B sends periodic services to device A, and device A may estimate or update S based on one or more recent periods.
  • the signal strength information and the interference strength information have been schematically described above, and the threshold will be described below.
  • the SIR of the resource used by the second terminal device is higher than or equal to the lower limit of the SIR threshold, or that the SINR of the resource used by the second terminal device is recommended to be higher than or equal to the lower limit of the SINR threshold; the second terminal device is not recommended
  • the SIR of the resources used by the second terminal device is lower than the lower limit of the SIR threshold, or the SINR of the resources not recommended for use by the second terminal device is lower than the lower limit of the SINR threshold.
  • the lower SIR threshold or the lower SINR threshold is configured or preconfigured or predefined.
  • the SIR threshold lower limit or the SINR threshold lower limit is configured by the second terminal device, or determined by the first terminal device itself.
  • device A determines whether a certain resource belongs to recommended or not-recommended resources based on SINR or SIR. If a certain resource belongs to the recommended resource, the SINR of the resource is not lower than the lower threshold SINR_th, or the SIR of the resource is not lower than the lower threshold SIR_th.
  • the embodiment of the present application makes no limitation on how to determine the lower threshold value SINR_th (or SIR_th). Different devices may have the same lower threshold value SINR_th (or SIR_th), or may have independent lower threshold values SINR_th (or SIR_th).
  • the RSRP of the resources recommended for use by the second terminal device is lower than or equal to the upper limit of the RSRP threshold; the RSRP of the resources not recommended for use by the second terminal device is higher than the upper limit of the RSRP threshold.
  • the upper limit of the RSRP threshold is determined according to the lower limit of the SIR threshold or the lower limit of the SINR threshold, and the signal strength information and/or noise strength information of the first signal.
  • device A that is very close to device B has a large S
  • device A that is far away from device B has a small S. Therefore, even for the same SINR_th (or SIR_th), different devices A may have different RSRP upper threshold values RSRP_th. For example, a device A that is very close to a device B has a larger upper RSRP threshold, that is, it can withstand greater interference, and a device A that is far away from a device B has a smaller upper RSRP threshold, that is, it can withstand more interference. Less distracting.
  • the first terminal device performs side link resource selection, wherein candidate resources whose Reference Signal Received Power (RSRP) is higher than the RSRP threshold are excluded from the first set of resources;
  • RSRP Reference Signal Received Power
  • the number of candidate resources in the set is greater than or equal to the resource number threshold, exclude the signal-to-interference ratio (SIR) from the second resource set if the signal-to-interference ratio (SIR) is lower than the lower limit of the signal-to-interference ratio (SIR) threshold or the signal-to-interference-noise ratio (SINR) )
  • SIR Signal-to-interference ratio
  • SINR signal-to-interference-noise ratio
  • Candidate resources lower than the lower limit of the signal-to-interference-noise ratio (SINR) threshold determine the cooperation information according to the remaining candidate resources in the second resource set.
  • the first terminal device increases the RSRP threshold and continues to select side link resources.
  • Fig. 6 is a schematic diagram of determining collaboration information according to an embodiment of the present application. As shown in Fig. 6, the method includes:
  • the set S A is initialized as a set including all candidate resources R x, y ;
  • the RSRP threshold is increased by ZdB (for example, 3dB);
  • the resources in the set SA are determined as recommended resources (cooperation information).
  • the candidate resource set S A may be firstly determined according to mode 2 resource selection. Since the signal component S is not considered in mode 2 resource selection, resources with very low SINR may still exist in S A .
  • the lower threshold value SINR_th is the lowest SINR acceptable for demodulation, then through 605, resources with SINR lower than SINR_th are further excluded in S A , and the remaining resources are used as resources recommended by device A.
  • the first terminal device selects side link resources, wherein candidate resources whose signal-to-interference ratio (SIR) is lower than the SIR threshold or whose signal-to-interference-noise ratio (SINR) is lower than the SINR threshold are excluded from the first resource set ;
  • SIR signal-to-interference ratio
  • SINR signal-to-interference-noise ratio
  • the first terminal device continues to select side link resources when the reduced SIR threshold is higher than or equal to the lower limit of the SIR threshold or the reduced SINR threshold is higher than or equal to the lower limit of the SINR threshold . If the number of candidate resources in the second resource set is greater than or equal to the resource number threshold, the cooperation information is determined according to the candidate resources in the second resource set.
  • Fig. 7 is another schematic diagram of determining cooperation information according to an embodiment of the present application. As shown in Fig. 7, the method includes:
  • the set S A is initialized as a set including all candidate resources R x, y ;
  • the SINR threshold is reduced by ZdB (for example, 3dB);
  • SINR threshold is lower than SINR_th; if yes, execute 706; if no, continue side link resource selection.
  • the resources in the set SA are determined as recommended resources (cooperation information).
  • the candidate resource set SA is determined based on the SINR threshold instead of the RSRP threshold.
  • the SINR threshold is lowered so that more resources can become candidate resources in SA .
  • the embodiment of the present application does not limit how to determine the SINR threshold. Different devices may have the same SINR threshold, or may have independent SINR thresholds.
  • SINR_th is the minimum SINR that demodulation can accept. If the reduced SINR threshold is not lower than SINR_th , the SINR threshold can be used; otherwise, even if the number of resources in SA does not reach the resource number threshold, the SA is still a recommended resource set.
  • the first terminal device performs side link resource selection, wherein candidate resources whose Reference Signal Received Power (RSRP) is higher than the RSRP threshold are excluded from the first set of resources; In the case that the number of candidate resources in the resource is greater than or equal to the resource number threshold, the candidate resources whose reference signal received power (RSRP) is higher than the upper limit value of the RSRP threshold are excluded from the second resource set; and according to the second resource set The remaining candidate resources determine the cooperation information.
  • RSRP Reference Signal Received Power
  • the first terminal device may also increase the RSRP threshold and continue side link resource selection when the number of candidate resources in the second resource set is less than the resource number threshold.
  • Fig. 8 is another schematic diagram of determining collaboration information according to an embodiment of the present application. As shown in Fig. 8, the method includes:
  • the set S A is initialized as a set including all candidate resources R x, y ;
  • the RSRP threshold is increased by ZdB (for example, 3dB);
  • the resources in the set SA are determined as recommended resources (cooperation information).
  • the candidate resource set S A may be firstly determined according to mode 2 resource selection. Since the signal component S is not considered in mode 2 resource selection, there may still be resources with high RSRP in S A .
  • the upper threshold value RSRP_th is the highest RSRP acceptable for demodulation, resources with an RSRP higher than RSRP_th are further excluded in S A through 805, and the remaining resources are used as resources recommended by device A.
  • the first terminal device performs side link resource selection, wherein candidate resources whose Reference Signal Received Power (RSRP) is higher than the RSRP threshold are excluded from the first set of resources; When the number of candidate resources is less than the resource number threshold, increase the RSRP threshold; Resources identify collaboration information.
  • RSRP Reference Signal Received Power
  • the first terminal device may continue to select side link resources when the increased RSRP threshold is lower than or equal to the upper limit of the Reference Signal Received Power (RSRP) threshold. If the number of candidate resources in the second resource set is greater than or equal to the resource number threshold, the cooperation information is determined according to the candidate resources in the second resource set.
  • RSRP Reference Signal Received Power
  • Fig. 9 is another schematic diagram of determining collaboration information according to an embodiment of the present application. As shown in Fig. 9, the method includes:
  • the set S A is initialized as a set including all candidate resources R x, y ;
  • the RSRP threshold is increased by ZdB (for example, 3dB);
  • the resources in the set SA are determined as recommended resources (cooperation information).
  • the candidate resource set S A may be determined first, and then resource selection is performed according to RSRP.
  • Device A excludes candidate resources whose RSRP is higher than the RSRP threshold from the set SA. When the number of resources in the set SA is insufficient, the RSRP threshold is increased, so that more resources can become candidate resources in SA .
  • the RSRP threshold cannot be increased without limit, and the RSRP threshold has an upper bound RSRP_th, and RSRP_th can be obtained according to the foregoing embodiments.
  • RSRP_th is the maximum degree of interference that demodulation can accept. If the added RSRP threshold is not higher than RSRP_th , this RSRP threshold can be used; otherwise, even if the number of resources in SA does not reach the resource number threshold, this SA is still used as the recommended resource set.
  • the obtained number of resources in the SA may not always be greater than or equal to the resource number threshold.
  • the embodiment of the present application may be applicable to unicast, multicast and broadcast.
  • the above is an example of determining whether the resource R x,y in SA is a recommended resource.
  • the embodiment of the present application is not limited thereto. For example, it may also be used to determine whether a resource reserved by the SCI is a recommended resource.
  • the above is described by taking the determination of recommended resources as an example, and this embodiment of the present application may also be used to determine unrecommended resources, for example, determining resources other than recommended resources as unrecommended resources.
  • the first terminal device determines the signal strength information for the second terminal device according to the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device
  • the terminal device sends the cooperation information of the side link information. In this way, resources with relatively less interference can be selected, thereby improving the reliability of side link transmission.
  • the embodiment of the present application provides a resource selection method, which is described from the perspective of the first terminal device, and the same content as the embodiment of the first aspect will not be described again.
  • the first terminal device receives a first signal from a second terminal device; the first terminal device receives a second signal from a third terminal device; and according to the signal strength information of the first signal, The interference strength information and/or noise strength information of the second signal is used to select side link resources.
  • the first terminal device sends cooperation information to the second terminal device according to the side link resource selection; wherein the cooperation information includes: the first terminal device recommends the second terminal device The set of side link resources used, and/or, the first terminal device does not recommend the set of side link resources used by the second terminal device.
  • the first terminal device performs side link resource information based on the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device. choose. In this way, resources with relatively less interference can be selected, thereby improving the reliability of side link transmission.
  • the apparatus may be, for example, a terminal device (such as the aforementioned first terminal device), or may be one or some components or components configured on the terminal device, and details that are the same as those in the embodiment of the first aspect will not be repeated here.
  • FIG. 10 is a schematic diagram of an apparatus for collaboration between devices according to an embodiment of the present application.
  • the inter-device collaboration apparatus 1000 includes:
  • the processing unit 1001 is configured to determine, according to the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device, for the second terminal device to send Collaboration information for sidelink information;
  • a sending unit 1002 configured to send the cooperation information to the second terminal device.
  • the inter-device collaboration apparatus 1000 further includes:
  • a receiving unit 1003, configured to receive the side link information sent by the second terminal device.
  • the cooperation information includes: the first terminal device recommends a set of side link resources used by the second terminal device, and/or, the first terminal device does not recommend the second terminal device to use The set of edge link resources.
  • the signal strength information includes layer 3 reference signal received power or layer 1 reference signal received power measured by the first terminal device based on the first signal sent by the second terminal device;
  • the interference strength information includes layer 1 reference signal received power measured by the first terminal device based on the second signal sent by the third terminal device.
  • the first signal includes the physical side link control channel and/or the physical side link shared channel sent by the second terminal device; the second signal includes the physical side link shared channel sent by the third terminal device. Physical side link control channel and/or physical side link shared channel.
  • the first signal includes request signaling sent by the second terminal device for triggering the first terminal device to send the cooperation information, or side link data sent by the second terminal device .
  • processing unit 1001 is further configured to:
  • the first resource overlaps with the second resource reserved by the second signal in time domain and frequency domain.
  • the signal-to-interference ratio of the resources recommended for the second terminal device is higher than or equal to the lower limit of the signal-to-interference ratio threshold, or the signal-to-interference-noise ratio of the resources recommended for the second terminal device is higher than Or equal to the lower limit of the SINR threshold;
  • the signal-to-interference ratio of the resource used by the second terminal device is lower than the lower limit of the signal-to-interference ratio threshold, or that the signal-to-interference-noise ratio of the resource not recommended to be used by the second terminal device is lower than the SIR The lower limit of the noise ratio threshold.
  • the signal-to-interference ratio threshold lower limit value or the signal-to-interference-noise-noise ratio threshold lower limit value is configured or preconfigured or predefined; or, the signal-to-interference ratio threshold lower limit value or the signal The lower limit of the interference-to-noise ratio threshold is configured by the second terminal device, or determined by the first terminal device.
  • the processing unit 1001 is used for:
  • the processing unit 1001 is used for:
  • the reduced signal-to-interference ratio threshold is lower than the lower limit value of the signal-to-interference ratio threshold or the reduced signal-to-interference-noise ratio threshold is lower than the lower limit value of the signal-to-interference-noise ratio threshold, according to the first Candidate resources in the two resource sets determine the cooperation information.
  • processing unit 1001 is also used for:
  • the reduced signal-to-interference ratio threshold is higher than or equal to the lower limit value of the signal-to-interference ratio threshold or the reduced signal-to-interference-noise ratio threshold is higher than or equal to the lower limit value of the signal-to-interference-noise ratio threshold, continue with the side link resource selection;
  • the reference signal received power of the resource used by the second terminal device is lower than or equal to the upper limit value of the reference signal received power threshold
  • the reference signal received power of the resources used by the second terminal device be higher than the upper limit value of the reference signal received power threshold.
  • the greater the signal strength of the first signal is, the greater the upper limit value of the reference signal receiving power threshold is.
  • the upper limit value of the received power threshold of the reference signal is based on the lower limit value of the signal-to-interference ratio threshold or the lower limit value of the signal-to-interference-noise ratio threshold, and the signal strength information and/or noise strength information of the first signal It is determined.
  • the processing unit 1001 is used for:
  • the processing unit 1001 is used for:
  • the cooperation information is determined according to candidate resources in the second resource set.
  • processing unit 1001 is also used for:
  • inter-device collaboration apparatus 1000 may also include other components or modules, and for specific content of these components or modules, reference may be made to related technologies.
  • FIG. 10 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection may be used.
  • the above-mentioned components or modules may be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc.; the implementation of the present application is not limited thereto.
  • the first terminal device determines the signal strength information for the second terminal device according to the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device
  • the terminal device sends the cooperation information of the side link information. In this way, resources with relatively less interference can be selected, thereby improving the reliability of side link transmission.
  • An embodiment of the present application provides a resource selection device.
  • the apparatus may be, for example, a terminal device (such as the aforementioned first terminal device), or may be one or some components or components configured on the terminal device, and details that are the same as those in the embodiment of the first aspect will not be repeated here.
  • FIG. 11 is a schematic diagram of a resource selection device according to an embodiment of the present application. As shown in Figure 11, the resource selection device 1100 includes:
  • a receiving unit 1101 which receives a first signal from a second terminal device, and receives a second signal from a third terminal device;
  • a processing unit 1102 configured to select side link resources according to the signal strength information of the first signal, the interference strength information and/or the noise strength information of the second signal.
  • the resource selection device 1100 further includes:
  • a sending unit 1103, configured to send cooperation information to the second terminal device according to the side link resource selection
  • the cooperation information includes: the first terminal device recommends the side link resource set used by the second terminal device, and/or, the first terminal device does not recommend the side link used by the second terminal device Collection of resources.
  • the resource selection apparatus 1100 may also include other components or modules, and for specific content of these components or modules, reference may be made to related technologies.
  • FIG. 11 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 the present application is not limited thereto.
  • the first terminal device performs side link resource information based on the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device. choose. In this way, resources with relatively less interference can be selected, thereby improving the reliability of side link transmission.
  • the embodiment of the present application also provides a communication system, which can be referred to FIG. 1 , and the same content as the embodiments of the first aspect to the fourth aspect will not be described again.
  • the communication system 100 may at least include:
  • the first terminal device determines, based on the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device, for the second terminal device sending cooperation information of side link information; and sending the cooperation information to the second terminal device;
  • the first signal receives the second terminal device, and receives the second signal from the third terminal device; and according to the signal strength information of the first signal, the interference strength information of the second signal and/or Noise intensity information for side link resource selection.
  • 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 thereto, and may be other network devices.
  • a network device which may be, for example, a base station, but the present application is not limited thereto, and may be other network devices.
  • FIG. 12 is a schematic diagram of a network device according to an embodiment of the present application.
  • a network device 1200 may include: a processor 1210 (such as a central processing unit CPU) and a memory 1220 ; the memory 1220 is coupled to the processor 1210 .
  • the memory 1220 can store various data; in addition, it also stores a program 1230 for information processing, and executes the program 1230 under the control of the processor 1210 .
  • the network device 1200 may further include: a transceiver 1240 and an antenna 1250 ; wherein, the functions of the above components are similar to those of the prior art, and will not be repeated here. It should be noted that the network device 1200 does not necessarily include all the components shown in FIG. 12 ; in addition, the network device 1200 may also include components not shown in FIG. 12 , 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 thereto, and may be other devices.
  • FIG. 13 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1300 may include a processor 1310 and a memory 1320 ; the memory 1320 stores data and programs, and is coupled to the processor 1310 . It is worth noting that this figure is exemplary; other types of structures may also be used in addition to or instead of this structure to implement telecommunications functions or other functions.
  • the processor 1310 may be configured to execute a program to implement the inter-device cooperation method described in the embodiment of the first aspect.
  • the processor 1310 may be configured to perform the following control: according to the signal strength information of the first signal from the second terminal device and the interference strength information and/or noise strength information of the second signal from the third terminal device, determine the Sending cooperation information of side link information to the second terminal device; and sending the cooperation information to the second terminal device.
  • the processor 1310 may be configured to execute a program to implement the resource selection method described in the embodiment of the second aspect.
  • the processor 1310 may be configured to perform the following control: receive a first signal from a second terminal device, and receive a second signal from a third terminal device; and according to the signal strength information of the first signal, the The interference strength information and/or noise strength information of the second signal is used to select side link resources.
  • the terminal device 1300 may further include: a communication module 1330 , an input unit 1340 , a display 1350 , and a power supply 1360 .
  • a communication module 1330 the terminal device 1300 may further include: a communication module 1330 , an input unit 1340 , a display 1350 , and a power supply 1360 .
  • the functions of the above components are similar to those of the prior art, and will not be repeated here. It should be noted that the terminal device 1300 does not necessarily include all the components shown in FIG. have technology.
  • the embodiment of the present application also provides a computer program, wherein when the program is executed in the terminal device, the program enables the terminal device to execute the inter-device cooperation method described in the embodiment of the first aspect, or to execute the second The resource selection method described in the embodiment of the aspect.
  • the embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables the terminal device to execute the inter-device cooperation method described in the embodiment of the first aspect, or execute the method described in the embodiment of the second aspect. Resource selection method.
  • the above devices and methods in this application can be implemented by hardware, or by combining hardware and software.
  • the present application relates to a computer-readable program that, when executed by a logic component, enables the logic component to realize the above-mentioned device or constituent component, or enables the logic component to realize the above-mentioned various methods or steps.
  • the present application also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memories, and the like.
  • the method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional block diagrams shown in the figure and/or one or more combinations of the functional block diagrams may correspond to each software module or each hardware module of the computer program flow.
  • These software modules may respectively correspond to the steps shown in the figure.
  • These hardware modules for example, can be realized by solidifying these software modules by 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 it can be an integral part of the processor.
  • the processor and storage medium can be located in the 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 large-capacity flash memory device.
  • One or more of the functional blocks described in the accompanying drawings and/or one or more combinations of the functional blocks 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 described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors processor, one or more microprocessors in communication with a DSP, or any other such configuration.
  • a method for inter-device collaboration comprising:
  • the first terminal device determines the sending limit for the second terminal device Collaboration information for link information
  • the first terminal device sends the cooperation information to the second terminal device.
  • the first terminal device receives the side link information sent by the second terminal device.
  • Supplement 3 The method according to Supplement 1 or 2, wherein the cooperation information includes: the side link resource set recommended by the first terminal device to be used by the second terminal device, and/or, the The first terminal device does not recommend the side link resource set used by the second terminal device.
  • Supplement 4 The method according to any one of Supplements 1 to 3, wherein the signal strength information includes Layer 3 measured by the first terminal device based on the first signal sent by the second terminal device (L3) Reference Signal Received Power (RSRP) or Layer 1 (L1) Reference Signal Received Power (RSRP).
  • L3 Reference Signal Received Power
  • RSRP Layer 1
  • L1 Reference Signal Received Power
  • Supplement 5 The method according to any one of Supplements 1 to 4, wherein the interference strength information includes layer 1 measured by the first terminal device based on the second signal sent by the third terminal device (L1) Reference Signal Received Power (RSRP).
  • L1 Reference Signal Received Power
  • Supplement 6 The method according to any one of Supplements 1 to 5, wherein the first signal includes a physical side link control channel (PSCCH) and/or a physical side link sent by the second terminal device shared channel (PSSCH);
  • PSCCH physical side link control channel
  • PSSCH second terminal device shared channel
  • the second signal includes a Physical Sidelink Control Channel (PSCCH) and/or a Physical Sidelink Shared Channel (PSSCH) sent by the third terminal device.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • Supplement 7 The method according to any one of Supplements 1 to 6, wherein the first signal includes a request sent by the second terminal device for triggering the first terminal device to send the cooperation information Signaling, or side link data sent by the second terminal device.
  • Supplementary Note 8 The method according to any one of Supplementary Notes 1 to 7, wherein the method further comprises:
  • the first terminal device calculates the signal-to-interference ratio (SIR) of the first resource according to the signal strength information of the first signal and the interference strength information of the second signal, or calculates the signal-to-interference ratio (SIR) of the first resource according to the signal strength information of the first signal and
  • the interference intensity information and the noise intensity information of the second signal calculate a signal-to-interference-noise ratio (SINR) of the first resource.
  • Supplement 9 The method according to Supplement 8, wherein the first resource and the second resource reserved by the second signal overlap in time domain and frequency domain.
  • Supplement 10 The method according to Supplement 8 or 9, wherein the SIR of the resource recommended for use by the second terminal device is higher than or equal to the lower limit of the SIR threshold, or the resource recommended for use by the second terminal device
  • the SINR is higher than or equal to the lower limit of the SINR threshold
  • the SIR of the resources not recommended for use by the second terminal device is lower than the lower SIR threshold, or the SINR of the resources not recommended for use by the second terminal device is lower than the lower SINR threshold.
  • Supplementary Note 11 The method according to Supplementary Note 10, wherein the SIR lower threshold or the SINR lower threshold is configured or preconfigured or predefined.
  • Supplement 12 The method according to Supplement 10, wherein the lower SIR threshold or the lower SINR threshold is configured by the second terminal device, or determined by the first terminal device.
  • Supplement 13 The method according to any one of Supplements 10 to 12, wherein the first terminal device is based on the signal strength information of the first signal from the second terminal device and the signal strength information from the third
  • the interference intensity information and/or noise intensity information of the second signal of the terminal device, determining cooperation information for the second terminal device to send side link information includes:
  • the first terminal device performs side link resource selection, wherein candidate resources whose Reference Signal Received Power (RSRP) is higher than the RSRP threshold are excluded from the first resource set; and
  • RSRP Reference Signal Received Power
  • Supplementary Note 14 The method according to Supplementary Note 13, wherein the method further comprises:
  • Supplement 15 The method according to any one of Supplements 10 to 12, wherein the first terminal device is based on the signal strength information of the first signal from the second terminal device and the signal strength information from the third
  • the interference intensity information and/or noise intensity information of the second signal of the terminal device, determining cooperation information for the second terminal device to send side link information includes:
  • the first terminal device selects side link resources, wherein candidate resources whose signal-to-interference ratio (SIR) is lower than the SIR threshold or whose signal-to-interference-noise ratio (SINR) is lower than the SINR threshold are excluded from the first resource set;
  • SIR signal-to-interference ratio
  • SINR signal-to-interference-noise ratio
  • the reduced SIR threshold is lower than the lower limit of the SIR threshold or the reduced SINR threshold is lower than the lower limit of the SINR threshold, determine the Collaboration information.
  • Supplementary Note 16 The method according to Supplementary Note 15, wherein the method further comprises:
  • the side link resource selection is continued.
  • Supplementary Note 17 The method according to Supplementary Note 15, wherein the method further comprises:
  • Supplementary Note 18 The method according to Supplementary Note 8 or 9, wherein the RSRP of the resources recommended for use by the second terminal device is lower than or equal to the upper limit of the RSRP threshold;
  • the RSRP of the resources used by the second terminal device be higher than the upper limit value of the RSRP threshold.
  • Supplement 19 The method according to Supplement 18, wherein the greater the signal strength of the first signal, the greater the upper limit of the RSRP threshold.
  • Supplement 20 The method according to Supplement 18, wherein the upper limit of the RSRP threshold is based on the lower limit of the SIR threshold or the lower limit of the SINR threshold, and the signal strength information and/or noise strength of the first signal information is determined.
  • Supplement 21 The method according to any one of Supplements 17 to 19, wherein the first terminal device is based on the signal strength information of the first signal from the second terminal device and the signal strength information from the third
  • the interference intensity information and/or noise intensity information of the second signal of the terminal device, determining cooperation information for the second terminal device to send side link information includes:
  • the first terminal device performs side link resource selection, wherein candidate resources whose reference signal received power (RSRP) is higher than the RSRP threshold are excluded from the first resource set;
  • RSRP reference signal received power
  • RSRP Reference Signal Received Power
  • Supplement 22 The method according to Supplement 21, wherein the method further comprises:
  • Supplement 23 The method according to any one of Supplements 17 to 19, wherein the first terminal device is based on the signal strength information of the first signal from the second terminal device and the signal strength information from the third signal
  • the interference intensity information and/or noise intensity information of the second signal of the terminal device, determining cooperation information for the second terminal device to send side link information includes:
  • the first terminal device performs side link resource selection, wherein candidate resources whose reference signal received power (RSRP) is higher than the RSRP threshold are excluded from the first resource set;
  • RSRP reference signal received power
  • the cooperation information is determined according to candidate resources in the second resource set.
  • Supplement 24 The method according to Supplement 23, wherein the method further comprises:
  • RSRP reference signal received power
  • Supplement 25 The method according to Supplement 23, wherein the method further comprises:
  • a resource selection method comprising:
  • the first terminal device receives the first signal from the second terminal device
  • the first terminal device receives a second signal from a third terminal device
  • Supplement 27 The method according to Supplement 26, wherein the method further comprises:
  • the first terminal device sends cooperation information to the second terminal device according to the side link resource selection
  • the cooperation information includes: the side link resource set recommended by the first terminal device to be used by the second terminal device, and/or, the side link resource set not recommended by the second terminal device to be used by the first terminal device A collection of link resources.
  • a terminal device including a memory and a processor, the memory stores a computer program, and the processor is configured to execute the computer program to implement the device described in any one of Supplements 1 to 25 Inter-cooperation method, or resource selection method as described in Supplementary Note 26 or 27.

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Abstract

Des modes de réalisation de la présente demande concernent un procédé et un appareil de collaboration entre dispositifs, et un procédé et un appareil de sélection de ressources. Le procédé comprend les étapes suivantes : un premier équipement terminal détermine, en fonction d'informations d'intensité de signal d'un premier signal provenant d'un deuxième équipement terminal et d'informations d'intensité d'interférence et/ou d'informations d'intensité de bruit d'un second signal provenant d'un troisième équipement terminal, des informations de collaboration pour l'envoi d'informations de liaison latérale par le deuxième équipement terminal (401) ; et envoie les informations de collaboration au deuxième équipement terminal (402).
PCT/CN2021/092791 2021-05-10 2021-05-10 Procédé et appareil de collaboration entre dispositifs, et procédé et appareil de sélection de ressources WO2022236587A1 (fr)

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