WO2023005144A1 - 资源选择方法及通信装置 - Google Patents

资源选择方法及通信装置 Download PDF

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Publication number
WO2023005144A1
WO2023005144A1 PCT/CN2021/142824 CN2021142824W WO2023005144A1 WO 2023005144 A1 WO2023005144 A1 WO 2023005144A1 CN 2021142824 W CN2021142824 W CN 2021142824W WO 2023005144 A1 WO2023005144 A1 WO 2023005144A1
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Prior art keywords
resource
threshold
resources
candidate
rssi
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English (en)
French (fr)
Inventor
沈兴亚
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/328—Reference signal received power [RSRP]; Reference signal received quality [RSRQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a resource selection method and a communication device.
  • the structure of the interlaced resource block was introduced.
  • IRB interlaced resource block
  • the numbers in the boxes represent the IRB indexes
  • the first symbol in the time slot is the Automatic Gain Control (AGC) symbol
  • the last symbol is Guard Period (GP) symbol.
  • the physical sidelink shared channel 1 (PysicalSidelink Share Channel, PSSCH) occupies IRB0 and IRB1
  • its corresponding physical sidelink control channel 1 (PysicalSidelink Control Channel, PSCCH) occupies IRB0.
  • PSSCH2 occupies IRB2, and its corresponding PSCCH2 also occupies IRB2.
  • Adjacent-band interference exists in adjacent IRBs.
  • IRB2 may generate adjacent-band interference to IRB3 or IRB1. Since the transmit power of different PSSCH channels may be different, resulting in a near-far effect, the adjacent band interference will be amplified.
  • Sidelink Sidelink
  • SL-U Unlicensed Spectrum
  • UE1 occupies IRB2 to communicate with UE3, and UE2 occupies IRB3 to communicate with UE4. Since IRB2 will have adjacent band interference on IRB3, if the transmit power of UE2 is much smaller than that of UE1, or the location of UE2 is close to that of UE1, the signal sent by UE1 to UE3 will cause serious interference to the signal sent by UE2 to UE4 , which is called the near-far effect. Therefore, how to reduce the impact of adjacent-band interference amplified by the near-far effect has become a problem to be solved.
  • Embodiments of the present application provide a resource selection method and a communication device, which are beneficial to reducing the impact of adjacent band interference amplified by the near-far effect.
  • the embodiment of the present application provides a resource selection method, the method includes:
  • Detecting a received signal strength indicator RSSI on a first resource where the first resource is a resource in a first candidate resource set, and the resources in the first candidate resource set are used for side link communication;
  • the terminal may remove unoccupied resources in the first candidate resource set according to the RSSI, for example, remove resources that are severely interfered by adjacent bands among the unoccupied resources from the first candidate resource set , thus, the terminal will not select these resources subject to serious adjacent-band interference for link communication, which is beneficial to reduce the impact of adjacent-band interference amplified by the near-far effect.
  • the first resource is an unoccupied resource in the first candidate resource set.
  • the first resource is a resource adjacent to the second resource in the frequency domain
  • the second resource satisfies at least one of the following conditions: being occupied, the reference signal received power RSRP is greater than the first threshold, and the second resource has excluded from the first set of candidate resources. Due to the presence of adjacent band interference between the second resource and resources adjacent to the second resource, the transmission power of different physical side link shared channel (PysicalSidelink Share Channel, PSSCH) channels may be different, therefore, when the second resource is occupied When selecting resources adjacent to the second resource for side link communication, a near-far effect may occur, and adjacent-band interference will be amplified.
  • PSSCH Physical Sidelink Share Channel
  • the first resource and the second resource are comb-teeth resource blocks IRBs.
  • the first resource when the RSSI on the first resource is greater than the second threshold, the first resource is excluded from the first candidate resource set to obtain the second candidate resource set.
  • the RSSIs on all first resources are greater than the second threshold, the RSSIs on all the first resources are compared with a third threshold, and the third threshold is greater than the second threshold; if some The RSSI on the first resource is greater than the third threshold, exclude the first resource with the RSSI greater than the third threshold from the first candidate resource set; if the RSSI on all the first resources is greater than the third threshold, exclude all the first resources on the first resource The RSSI is compared with the fourth threshold, and the fourth threshold is greater than the third threshold; if the RSSI on some of the first resources is greater than the fourth threshold, the first resource whose RSSI is greater than the fourth threshold is excluded from the first candidate resource set.
  • the first threshold is configured by high-layer signaling, or, the first threshold is predetermined by a protocol.
  • the second threshold, the third threshold, and the fourth threshold are configured by high-level signaling, or the second threshold, the third threshold, and the fourth threshold are predetermined by a protocol.
  • the linear average value of received power on one or more physical resource blocks within one symbol on the first resource is detected; or, the linear average value of received power on one or more IRBs within one symbol on the first resource is detected or, detect the linear average value of the received power within a given bandwidth within a symbol on the first resource; or, detect the linear average value of the received power within a given subchannel within a symbol on the first resource,
  • a subchannel includes one or more physical resource blocks.
  • the embodiment of the present application provides a resource selection device, the resource selection device includes:
  • a detection unit configured to detect a received signal strength indicator RSSI on a first resource, where the first resource is a resource in the first candidate resource set, and the resources in the first candidate resource set are used for side link communication;
  • an excluding unit configured to exclude resources in the first set of candidate resources according to the RSSI of the first resource, to obtain a second set of candidate resources
  • a selecting unit configured to select resources from the second set of candidate resources for side link communication.
  • the first resource is an unoccupied resource in the first candidate resource set.
  • the first resource is a resource adjacent to the second resource in the frequency domain, and the second resource satisfies at least one of the following conditions: being occupied, the reference signal received power RSRP is greater than the first threshold, and the second resource has excluded from the first set of candidate resources.
  • the first resource and the second resource are comb-teeth resource blocks IRBs.
  • the resource selection device further includes a comparison unit, if the RSSI on all the first resources is greater than the second threshold, the comparison unit is used to compare the RSSI on all the first resources with the third threshold Comparison, the third threshold is greater than the second threshold; if the RSSI on some of the first resources is greater than the third threshold, the exclusion unit is also used to exclude the first resource whose RSSI is greater than the third threshold from the first candidate resource set; if all The RSSIs on the first resources are all greater than the third threshold, and the comparison unit is also used to compare the RSSIs on all the first resources with the fourth threshold, and the fourth threshold is greater than the third threshold; if the RSSIs on some of the first resources Greater than the fourth threshold, the exclusion unit is further configured to exclude the first resource whose RSSI is greater than the fourth threshold from the first candidate resource set.
  • the first threshold is configured by high-layer signaling, or, the first threshold is predetermined by a protocol.
  • the second threshold, the third threshold, and the fourth threshold are configured by high-level signaling, or the second threshold, the third threshold, and the fourth threshold are predetermined by a protocol.
  • the detection unit is further configured to detect the linear average value of received power on one or more physical resource blocks within one symbol on the first resource; or, is also used to detect The linear average value of the received power on one or more IRBs within a symbol; or, also used to detect the linear average value of the received power within a given bandwidth within a symbol on the first resource; or, also used to detect the first resource The linear average of the received power in a given subchannel within the last symbol, where a subchannel contains one or more physical resource blocks.
  • the embodiment of the present application provides a chip, the chip includes a processor and a data interface, and the processor reads the instructions stored in the memory through the data interface to execute the instructions described in the first aspect. method.
  • the embodiment of the present application provides a chip module, which is characterized in that the chip module includes the chip as described in the third aspect.
  • the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, the computer program includes program instructions, and when executed by a processor, the program instructions cause all The processor executes the method described in the first aspect.
  • FIG. 1 is a schematic diagram of a comb-teeth resource block structure provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a side link communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a resource selection method provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a resource selection device provided in an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • the technical solution of the present application can be applied to the side link communication system of the fifth generation mobile communication (5Th Generation, 5G), or in the side link communication system of the sixth generation mobile communication (6Th Generation, 6G) or other future in a side-link communication system.
  • a terminal may refer to various forms of user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station (Mobile Station, MS), remote station, remote terminal, Mobile device, user terminal, wireless communication device, user agent or user device.
  • User Equipment User Equipment
  • access terminal user unit, user station, mobile station, mobile station (Mobile Station, MS), remote station, remote terminal, Mobile device, user terminal, wireless communication device, user agent or user device.
  • the terminal can also be a cellular phone, a cordless phone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminals in the 5G network or terminals in the future evolution of the Public Land Mobile Network (PLMN), etc. , which is not limited in this embodiment of the present application.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • FIG. 2 is a schematic structural diagram of a sidelink (Sidelink) communication system provided by an embodiment of the present application.
  • the side link communication system may include but not limited to one or more terminals.
  • the side link communication system shown in FIG. 2 takes a user equipment 1, a user equipment 2, a user equipment 3 and a user equipment 4 as examples , wherein, user equipment 1, user equipment 2, user equipment 3, and user equipment 4 may establish side links with each other for communication.
  • the number and form of devices shown in FIG. 2 are for example and do not constitute a limitation to the embodiment of the present application.
  • the comb tooth resource block includes 10 or 11 physical resource blocks, and there are M physical resource blocks between two consecutive available physical resource blocks, where M is a positive integer.
  • M IRBs can be separated between two physical resource blocks (Physical Resource Blocks, PRBs).
  • PRBs Physical Resource Blocks
  • the corresponding index of the PRB is ⁇ m, M+m, 2M+m, 3M+m ,... ⁇ , where m ⁇ ⁇ 0, 1, ..., M-1 ⁇ .
  • the IRB structure is defined for two subcarrier spacings of 15kHz and 30kHz, as shown in the following table:
  • the structure design of the IRB in the existing NR-U system can be introduced into the Sidelink in Unlicensed Spectrum (SL-U) communication system working in the unlicensed spectrum.
  • SL-U Sidelink in Unlicensed Spectrum
  • the structure of the IRB in the SL-U system is shown in Figure 1.
  • Five IRB resources are configured in Figure 1.
  • the numbers in the boxes represent IRB indexes, and the first symbol in the time slot is Automatic Gain Control (Automatic Gain Control, AGC) symbol, and the last symbol is the Guard Period (GP) symbol.
  • AGC Automatic Gain Control
  • GP Guard Period
  • the physical sidelink shared channel 1 occupies IRB0 and IRB1, and its corresponding physical sidelink control channel 1 (PysicalSidelink Control Channel, PSCCH) occupies IRB0.
  • PSSCH2 occupies IRB2, and its corresponding PSCCH2 also occupies IRB2.
  • Adjacent-band interference exists in adjacent IRBs.
  • IRB2 may generate adjacent-band interference to IRB3 or IRB1. Since the transmit power of different PSSCH channels may be different, resulting in a near-far effect, the adjacent band interference will be amplified.
  • UE1 occupies IRB2 to communicate with UE3, and UE2 occupies IRB3 to communicate with UE4. Since IRB2 will have adjacent band interference on IRB3, if the transmit power of UE2 is much smaller than that of UE1, or the location of UE2 is close to that of UE1, the signal sent by UE1 to UE3 will cause serious interference to the signal sent by UE2 to UE4 , which is called the near-far effect.
  • This application provides a resource selection method, which can be applied to the side link communication system shown in Figure 2.
  • the terminal detects the received signal strength indication RSSI on the first resource, and then selects the first candidate resource according to the RSSI of the first resource.
  • the resources in the set are excluded to obtain a second candidate resource set, and the terminal selects resources from the second candidate resource set for side link communication, which is beneficial to reduce the impact of adjacent band interference amplified by the near-far effect.
  • FIG. 3 is a schematic flowchart of a resource selection method provided by an embodiment of the present application.
  • the resource selection method can be applied to the side link communication system shown in FIG. 2 .
  • the embodiments of the present application are described in detail by taking the above-mentioned terminal as an execution subject as an example.
  • the resource selection method includes the following steps:
  • S301 Detect a received signal strength indicator (RSSI) on a first resource.
  • RSSI received signal strength indicator
  • the first resource is an IRB, which is a resource in the first candidate resource set, and the resources in the first candidate resource set are used for side link communication.
  • the resources in the first candidate resource set are reserved resources, and the resources included in the initial set of the first candidate resource set may be configured by high-layer signaling, or pre-set by a protocol. Specified.
  • the resources in the initial set of the first candidate resource set include IRB0, IRB1, IRB2, IRB3, and IRB4 as shown in FIG. 1 .
  • the first resource is an unoccupied resource in the first candidate resource set.
  • IRB0, IRB1, IRB3 and IRB4 are in the first candidate resource set, but IRB0 is an occupied resource, and IRB1, IRB3 and IRB4 are not occupied, so IRB1, IRB3 and IRB4 are the first resources.
  • the first resource is a resource adjacent to the second resource in the frequency domain, where the second resource is an IRB and meets at least one of the following conditions: occupied, reference signal received power (Reference Signal Receiving Power, RSRP) is greater than the first threshold, and has been excluded from the first candidate resource set.
  • the first threshold is configured by high-layer signaling, or the first threshold is pre-specified by a protocol. For example, in FIG. 1, IRB2 is the second resource, IRB0, IRB1, IRB3, and IRB4 are in the first candidate resource set, and IRB1 and IRB3 are adjacent to the second resource in the frequency domain, so IRB1 and IRB3 are the first resource.
  • the transmit power of different PSSCH channels may be different. Therefore, when the second resource is an occupied resource, selecting resources adjacent to the second resource for side link communication may cause near-far effect, the adjacent band interference will be amplified. Therefore, it is necessary to perform RSSI measurement on adjacent resources of the second resource, so as to reduce the impact of adjacent band interference amplified by the near-far effect. At the same time, because the RSSI measurement only needs to be performed on adjacent resources of the second resource, power consumption can be saved.
  • the unit of the first threshold is dB or dBm.
  • the terminal receives and decodes sidelink control information (Sidelink Control Information, SCI) within the sensing window, and knows which resources are used for PSSCH transmission according to the information content of the successfully decoded SCI.
  • the terminal performs RSRP measurement on the demodulation reference signal (Demodulation Reference Signal, DMRS) on the PSCCH carrying the SCI or the DMRS on the PSSCH scheduled by the PSCCH.
  • the terminal compares the measured RSRP with the first threshold, and if the measured RSRP is higher than the first threshold, excludes the corresponding resource from the first candidate resource set, otherwise keeps the corresponding resource in the first candidate resource set.
  • the corresponding resource excluded from the first set of candidate resources is the second resource.
  • the terminal also excludes resources that are not perceived due to the half-duplex problem from the first candidate resource set. For example, the terminal receives and decodes the SCI within the perception window, and the terminal determines that IRB2 is occupied by the PSSCH according to the information content of the SCI, that is, the terminal knows that IRB2 is used for side link communication according to the content of the SCI information, then the terminal determines that the PSCCH carrying the SCI RSRP measurement is performed on the DMRS on the DMRS, or the terminal performs RSRP measurement on the DMRS on the PSSCH scheduled by the PSCCH carrying the SCI. The terminal compares the measured RSRP with the first threshold, and if the measured RSRP is higher than the first threshold, excludes IRB2 from the first candidate resource set, and at this time IRB2 is the second resource.
  • detecting a received signal strength indication (Received Signal Strength Indication, RSSI) on the first resource may be detecting on one or more physical resource blocks within a symbol (symbol) on the first resource The linear average of the received power.
  • RSSI Received Signal Strength Indication
  • detecting the RSSI on the first resource may be detecting a linear average value of received power on one or more IRBs within one symbol on the first resource.
  • detecting the RSSI on the first resource may be detecting a linear average value of received power within a given bandwidth within a symbol on the first resource.
  • detecting the RSSI on the first resource may be detecting the linear average value of received power in a given subchannel within a symbol on the first resource, where the subchannel includes one or more physical resources piece.
  • the unit of the RSSI is dB or dBm.
  • the resources in the second candidate resource set are resources that are less interfered by adjacent bands, or resources that are not interfered by adjacent bands.
  • the first resource when the RSSI on the first resource is greater than the second threshold, the first resource is excluded from the first candidate resource set to obtain the second candidate resource set.
  • the second threshold is configured by high-layer signaling, or the second threshold is pre-specified by the protocol.
  • the first set of candidate resources includes IRB0, IRB1, IRB3, and IRB4 as shown in Figure 1, and the first resources are IRB0, IRB1, IRB3, and IRB4.
  • the first candidate resource set is excluded to obtain the second candidate resource set, that is, the resources in the second candidate resource set include IRB1, IRB3 and IRB4.
  • the terminal screens the resources in the first set of candidate resources through RSSI, and can remove unoccupied resources in the first set of candidate resources, for example, select the unoccupied resources that suffer severe adjacent band interference from the second
  • the first candidate resource set is excluded to obtain the second candidate resource set.
  • the terminal selects resources in the second candidate resource set for side link communication, it can avoid selecting resources that are severely interfered by adjacent bands, which is conducive to reducing the amplification due to the near-far effect. The impact of adjacent band interference.
  • the third threshold can be configured through high-level signaling, or the third threshold can be pre-specified through a protocol, and the threshold can be increased, for example, by 3dB, that is, the third threshold is 3dB higher than the second threshold. Therefore, if the RSSIs on all the first resources are greater than the second threshold, compare the RSSIs on all the first resources with the third threshold, so as to exclude the resources with severe adjacent-band interference and leave the resources with less adjacent-band interference resources, so that there are available resources in the second candidate resource set and the received adjacent band interference is relatively small.
  • the first resource whose RSSI is greater than the third threshold is excluded from the first candidate resource set to obtain a second candidate resource set.
  • the fourth threshold can be configured through high-level signaling, or the fourth threshold can be pre-specified through the protocol to increase the threshold , for example, increase by 3dB, that is, the fourth threshold is 3dB higher than the third threshold, and then compare the RSSI on the first resource with the fourth threshold.
  • the first resource whose RSSI is greater than the fourth threshold is excluded from the first candidate resource set to obtain a second candidate resource set. That is to say, if the RSSIs on all first resources are greater than the N-1th threshold, then compare the RSSIs on all the first resources with the Nth threshold, and the Nth threshold is greater than the N-1th threshold; if some of the first resources If the RSSI above is greater than the Nth threshold, the first resource whose RSSI is greater than the Nth threshold is excluded from the first set of candidate resources to obtain a second set of candidate resources.
  • N is a positive integer greater than 4, and the Nth threshold is configured by high-level signaling, or the Nth threshold is pre-specified in the protocol.
  • the RSSI on the first resource can be further compared with the Nth threshold higher than the N-1th threshold, Until there are available resources in the obtained second candidate resource set.
  • the resources subject to severe adjacent-band interference are excluded, so that the resources in the second set of candidate resources suffer from less or no adjacent-band interference, so select from the second set of candidate resources.
  • resources are used for side link communication, it is beneficial to reduce the impact of adjacent band interference amplified by the near-far effect.
  • the resources in the initial set of the first candidate resource set include IRB0, IRB1, IRB2, IRB3, and IRB4 as shown in FIG. 1 .
  • the terminal receives and decodes the SCI within the perception window, and the terminal determines that IRB0 and IRB1 are occupied by PSSCH1 and IRB2 is occupied by PSSCH2 according to the information content of the SCI, that is, the terminal knows that IRB0, IRB1 and IRB2 are used for side link communication according to the information content of the SCI . Then the terminal performs RSRP measurement on the DMRS on the PSCCH carrying the SCI, or the terminal performs RSRP measurement on the DMRS on the PSSCH scheduled by the PSCCH carrying the SCI.
  • the terminal compares the measured RSRP with the first threshold, the measured RSRP on IRB2 is higher than the first threshold, and the measured RSRPs on IRB0 and IRB1 are lower than the first threshold. Therefore, the terminal excludes IRB2 from the first candidate resource set, and at this time, the first candidate resource set includes IRB0, IRB1, IRB3, and IRB4. IRB3 and IRB4 in the first candidate resource set are unoccupied resources, that is, first resources.
  • the terminal detects the RSSI on the first resource, that is, detects the RSSI on IRB3 and IRB4. IRB3 and IRB2 are adjacent in the frequency domain, the RSSI on IRB3 is higher than the second threshold, and the RSSI on IRB4 is lower than the second threshold.
  • the second candidate resource set is obtained by excluding from the first candidate resource set. At this time, the second candidate resource set includes IRB0, IRB1, and IRB4. The terminal selects resources from the second candidate resource set to perform side link communication.
  • the terminal detects the RSSI on the first resource, and excludes the resources in the first candidate resource set according to the RSSI of the first resource to obtain the second candidate resource set; then the terminal selects from the second candidate resource set Select resources for sidelink communication. Therefore, the terminal can eliminate unoccupied resources through RSSI, for example, exclude unoccupied resources that suffer from severe adjacent-band interference in the first set of candidate resources, so that the terminal will not select these resources that suffer from severe adjacent-band interference for linking. road communication. Compared with only removing occupied resources through RSRP, it is beneficial to reduce the impact of adjacent-band interference amplified by the near-far effect.
  • FIG. 4 is a schematic structural diagram of a resource selection device provided by an embodiment of the present application.
  • the resource selection device 400 includes: a detection unit 401 , an exclusion unit 402 and a selection unit 403 .
  • the detection unit 401 is configured to detect a received signal strength indicator (RSSI) on a first resource, where the first resource is a resource in a first candidate resource set, and the resources in the first candidate resource set are used for side link communication.
  • RSSI received signal strength indicator
  • the exclusion unit 402 excludes resources in the first candidate resource set according to the RSSI of the first resource to obtain a second candidate resource set.
  • the selection unit 403 is configured to select resources from the second candidate resource set to perform side link communication.
  • the first resource is an unoccupied resource in the first candidate resource set.
  • the first resource is a resource adjacent to the second resource in the frequency domain, and the second resource satisfies at least one of the following conditions: being occupied, the reference signal received power RSRP is greater than the first threshold, and the second resource has excluded from the first set of candidate resources.
  • the first resource and the second resource are comb-teeth resource blocks IRBs.
  • the resource selection device further includes a comparison unit, and if the RSSIs on all first resources are greater than a second threshold, the comparison unit is configured to compare the RSSIs on all first resources with the second threshold. Three-threshold comparison, wherein, the third threshold is greater than the second threshold; if the RSSI on some of the first resources is greater than the third threshold, the exclusion unit 402 is also used to select the first resource with the RSSI greater than the third threshold from the first candidate resource Excluded from the set; if the RSSI on all the first resources is greater than the third threshold, the comparison unit is also used to compare the RSSI on all the first resources with the fourth threshold, and the fourth threshold is greater than the third threshold; if some of the first resources If the RSSI on a resource is greater than the fourth threshold, the exclusion unit 402 is further configured to exclude the first resource with the RSSI greater than the fourth threshold from the first candidate resource set.
  • the first threshold is configured by high-layer signaling, or, the first threshold is predetermined by a protocol.
  • the second threshold, the third threshold, and the fourth threshold are configured by high-level signaling, or the second threshold, the third threshold, and the fourth threshold are predetermined by a protocol.
  • the detection unit 401 is further configured to detect the linear average value of received power on one or more physical resource blocks within one symbol on the first resource; or, is also used to detect the first resource The linear average value of the received power on one or more IRBs in the last symbol; or, it is also used to detect the linear average value of the received power in a given bandwidth in a symbol on the first resource; or, it is also used to detect the first The linear average of the received power in a given subchannel within a symbol on a resource, where a subchannel contains one or more physical resource blocks.
  • the terminal detects the RSSI on the first resource, and excludes the resources in the first candidate resource set according to the RSSI of the first resource to obtain the second candidate resource set; then the terminal selects from the second candidate resource set Select resources for sidelink communication. Therefore, the terminal can eliminate unoccupied resources through RSSI, for example, exclude unoccupied resources that suffer from severe adjacent-band interference in the first set of candidate resources, so that the terminal will not select these resources that suffer from severe adjacent-band interference for linking. road communication. Compared with only removing occupied resources through RSRP, it is beneficial to reduce the impact of adjacent-band interference amplified by the near-far effect.
  • FIG. 5 is a schematic structural diagram of a terminal provided in an embodiment of the present application.
  • the terminal 500 includes: a processor 501 and a memory 502, and the processor 501 and the memory 502 are connected through one or more communication buses.
  • processor 501 can be central processing unit (Central Processing Unit, CPU), and this processor can also be other general processors, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC) ), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA off-the-shelf programmable gate array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the memory described above may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Random Access Memory
  • SRAM Static RAM
  • DRAM Dynamic Random Access Memory
  • DRAM Synchronous Dynamic Random Access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the processor 501 is configured for the terminal to execute corresponding functions of the terminal in the method described in FIG. 3 .
  • the above-mentioned memory 502 may include a read-only memory and a random-access memory, and provides computer programs and data to the processor 501 .
  • a portion of memory 502 may also include non-volatile random access memory.
  • Detecting a received signal strength indicator RSSI on a first resource where the first resource is a resource in a first candidate resource set, and the resources in the first candidate resource set are used for side link communication;
  • the first resource is an unoccupied resource in the first candidate resource set.
  • the first resource is a resource adjacent to the second resource in the frequency domain, and the second resource satisfies at least one of the following conditions: being occupied, the reference signal received power RSRP is greater than the first threshold, and the second resource has excluded from the first set of candidate resources.
  • the first resource and the second resource are comb-teeth resource blocks IRBs.
  • the first resource when the RSSI on the first resource is greater than the second threshold, the first resource is excluded from the first candidate resource set to obtain the second candidate resource set.
  • the RSSIs on all first resources are greater than the second threshold, the RSSIs on all the first resources are compared with a third threshold, and the third threshold is greater than the second threshold; if some The RSSI on the first resource is greater than the third threshold, exclude the first resource with the RSSI greater than the third threshold from the first candidate resource set; if the RSSI on all the first resources is greater than the third threshold, exclude all the first resources on the first resource The RSSI is compared with the fourth threshold, and the fourth threshold is greater than the third threshold; if the RSSI on some of the first resources is greater than the fourth threshold, the first resource whose RSSI is greater than the fourth threshold is excluded from the first candidate resource set.
  • the first threshold is configured by high-layer signaling, or, the first threshold is predetermined by a protocol.
  • the second threshold, the third threshold, and the fourth threshold are configured by high-level signaling, or the second threshold, the third threshold, and the fourth threshold are predetermined by a protocol.
  • the linear average value of received power on one or more physical resource blocks within one symbol on the first resource is detected; or, the linear average value of received power on one or more IRBs within one symbol on the first resource is detected or, detect the linear average value of the received power within a given bandwidth within a symbol on the first resource; or, detect the linear average value of the received power within a given subchannel within a symbol on the first resource,
  • a subchannel includes one or more physical resource blocks.
  • the terminal detects the RSSI on the first resource, and excludes the resources in the first candidate resource set according to the RSSI of the first resource to obtain the second candidate resource set; then the terminal selects from the second candidate resource set Select resources for sidelink communication. Therefore, the terminal can eliminate unoccupied resources through RSSI, for example, exclude unoccupied resources that suffer from severe adjacent-band interference in the first set of candidate resources, so that the terminal will not select these resources that suffer from severe adjacent-band interference for linking. road communication. Compared with only removing occupied resources through RSRP, it is beneficial to reduce the impact of adjacent-band interference amplified by the near-far effect.
  • An embodiment of the present application provides a chip.
  • the chip includes: processor and memory.
  • the number of processors may be one or more, and the number of memories may be one or more.
  • the processor can execute the resource selection method as shown in FIG. 3 and the steps executed in related implementations.
  • the embodiment of the present application further provides a chip module, the chip module includes the above-mentioned chip, and can execute the above resource selection method as shown in FIG. 3 and the steps executed in related implementations.
  • the embodiment of the present application also provides a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program, and the computer program includes program instructions.
  • the program instructions are executed by the processor, the above resource selection method shown in FIG. 3 and the steps performed in related implementations can be executed. .
  • the computer-readable storage medium may be an internal storage unit of the terminal described in any of the foregoing embodiments, such as a hard disk or memory of the device.
  • the computer-readable storage medium can also be an external storage device of the terminal, such as a plug-in hard disk equipped on the device, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card , Flash Card (Flash Card) and so on.
  • the computer-readable storage medium may also include both an internal storage unit of the terminal and an external storage device.
  • the computer-readable storage medium is used to store the computer program and other programs and data required by the terminal.
  • the computer-readable storage medium can also be used to temporarily store data that has been output or will be output.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • the above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or other arbitrary combinations.
  • the above-described embodiments may be implemented in whole or in part in the form of computer program products.
  • the computer program product comprises one or more computer instructions or computer programs.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Wired or wireless transmission to another website site, computer, server or data center.
  • sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed methods, devices and systems can be implemented in other ways.
  • the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.
  • the above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium.
  • the above-mentioned software functional units are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute some steps of the methods described in various embodiments of the present invention.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

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Abstract

本申请实施例公开了一种资源选择方法及通信装置。该方法中，终端检测第一资源上的接收信号强度指示RSSI，并根据第一资源的RSSI对第一候选资源集合中的资源进行排除，得到第二候选资源集合；然后终端从第二候选资源集合中选择资源进行侧链路通信。因此，终端可以通过RSSI剔除未被占用的资源，例如排除未被占用的资源中受到严重邻带干扰的资源，从而，终端不会选择这些受到严重邻带干扰的资源进行链路通信，有利于减少由于远近效应而放大的邻带干扰带来的影响。

Description

资源选择方法及通信装置 技术领域
本申请涉及通信技术领域，尤其涉及一种资源选择方法及通信装置。
背景技术
工作在非授权频谱的新空口(New Radio in Unlicensed Spectrum，NR-U)系统的设计中，为了满足非授权频谱的法规需求，引入了梳齿资源Interlaced Resource Block，IRB)的结构。如图1所示，图1中配置了5个IRB资源，方框中的数字代表IRB索引，时隙中的第一个符号为自动增益控制(Automatic Gain Control，AGC)符号，最后一个符号为保护时段(Guard Period，GP)符号。图1中，物理侧链路共享信道1(PysicalSidelink Share Channel，PSSCH)占据IRB0和IRB1，其对应的物理侧链路控制信道1(PysicalSidelink Control Channel，PSCCH)占据IRB0。PSSCH2占据IRB2，其对应的PSCCH2也占据IRB2。相邻的IRB存在邻带干扰，例如，图1中，IRB2会对IRB3或IRB1产生邻带干扰。由于不同的PSSCH信道的发送功率可能不同，造成远近效应，邻带干扰将会放大。当侧链路(Sidelink)通信系统中使用非授权频谱时，同样需满足非授权频谱上的法规需求。因此，现有的NR-U系统中IRB的结构设计可以引入到工作在非授权频谱的侧链路(Sidelink in Unlicensed Spectrum，SL-U)通信系统中，使得侧链路通信系统可以工作在非授权频谱，并且满足相应的法规需求。
在SL-U通信系统中，如果用户设备(User Equipment，UE)之间距离较近，且选择相邻的IRB传输数据时，则会造成严重的远近效应。例如，如图2所示，UE1占用IRB2与UE3进行通信，UE2占据IRB3和UE4进行通信。由于IRB2会在IRB3上有邻带干扰，如果UE2的发射功率远小于UE1，或者UE2的位置和UE1的位置接近，则UE1发送给UE3的信号将会对UE2发送给UE4的信号造成严重的干扰，这种情况称为远近效应。因此，如何减少由于远近效应放大的邻带干扰带来的影响成为待解决的问题。
发明内容
本申请实施例提供一种资源选择方法及通信装置，有利于减少由于远近效应放大的邻带干扰带来的影响。
第一方面，本申请实施例提供了一种资源选择方法，该方法包括：
检测第一资源上的接收信号强度指示RSSI，第一资源为第一候选资源集合中的资源，第一候选资源集合中的资源用于侧链路通信；
根据所述第一资源的RSSI对所述第一候选资源集合中的资源进行排除，得到第二候选资源集合；
从所述第二候选资源集合中选择资源进行侧链路通信。
基于第一方面的描述，终端可以根据RSSI将第一候选资源集合中未被占用的资源进行剔除，例如，将未被占用的资源中受到严重邻带干扰的资源从第一候选资源集合中剔除，从而，终端不会选择这些受到严重邻带干扰的资源进行链路通信，有利于减少由于远近效应放大的邻带干扰带来的影响。
在一种可选的实施方式中，第一资源为第一候选资源集合中未被占用的资源。
在一种可选的实施方式中，第一资源为与第二资源频域相邻的资源，第二资源满足以下条件中的至少一个：被占用，参考信号接收功率RSRP大于第一阈值，已从所述第一候选资源集合中被排除。由于第二资源和第二资源相邻的资源之间存在邻带干扰，不同的物理侧链路共享信道(PysicalSidelink Share Channel，PSSCH)信道的发送功率可能不同，因此，当第二资源为被占用的资源时，选择第二资源相邻的资源进行侧链路通信时可能会造成远近效应，邻带干扰将会放大。所以，需要对第二资源的相邻资源进行RSSI测量，从而减少由于远近效应放大的邻带干扰带来的影响。同时，因为只需要对第二资源的相邻资源进行RSSI测量，可以节省功耗。
在一种可选的实施方式中，第一资源、第二资源为梳齿资源块IRB。
在一种可选的实施方式中，当第一资源上的RSSI大于第二阈值时，在第一候选资源集合中排除第一资源，得到第二候选资源集合。
在一种可选的实施方式中，若所有第一资源上的RSSI均大于第二阈值，将所有第一资源上的RSSI与第三阈值比较，第三阈值大于所述第二阈值；若部分第一资源上的RSSI大于第三阈值，将RSSI大于第三阈值的第一资源从第一候选资源集合中排除；若所有第一资源上的RSSI均大于第三阈值，将所有第一资源上的RSSI与第四阈值比较，第四阈值大于所述第三阈值；若部分第一资源上的RSSI大于第四阈值，将RSSI大于第四阈值的第一资源从第一候选资源集合中排除。
在一种可选的实施方式中，第一阈值由高层信令配置，或者，所述第一阈值为协议预先规定的。
在一种可选的实施方式中，第二阈值、第三阈值和第四阈值由高层信令配置，或者，第二阈值、第三阈值和第四阈值为协议预先规定的。
在一种可选的实施方式中，检测第一资源上一个符号内一个或者多个物理资源块上的接收功率的线性平均值；或，检测第一资源上一个符号内一个或者多个IRB上的接收功率的线性均值；或，检测第一资源上一个符号内给定带宽内的接收功率的线性平均值；或，检测第一资源上一个符号内给定子信道内接收功率的线性平均值，其中，子信道包含一个或者多个物理资源块。
第二方面，本申请实施例提供了一种资源选择装置，该资源选择装置包括：
检测单元，用于检测第一资源上的接收信号强度指示RSSI，第一资源为第一候选资源集合中的资源，第一候选资源集合中的资源用于侧链路通信；
排除单元，用于根据第一资源的RSSI对第一候选资源集合中的资源进行排除，得到第二候选资源集合；
选择单元，用于从第二候选资源集合中选择资源进行侧链路通信。
在一种可选的实施方式中，第一资源为第一候选资源集合中未被占用的资源。
在一种可选的实施方式中，第一资源为与第二资源频域相邻的资源，第二资源满足以下条件中的至少一个：被占用，参考信号接收功率RSRP大于第一阈值，已从所述第一候选资源集合中被排除。
在一种可选的实施方式中，第一资源、第二资源为梳齿资源块IRB。
在一种可选的实施方式中，该资源选择装置还包括比较单元，若所有第一资源上的RSSI均大于第二阈值，比较单元，用于将所有第一资源上的RSSI与第三阈值比较，第三阈值大于第二阈值；若部分第一资源上的RSSI大于第三阈值，排除单元，还用于将RSSI大于第三阈值的第一资源从第一候选资源集合中排除；若所有第一资源上的RSSI均大于第三阈值，比较单元，还用于将所有第一资源上的RSSI与第四阈值比较，第四阈值大于所述第三阈值；若部分第一资源上的RSSI大于第四阈值，排除单元，还用于将RSSI大于第四阈值的第一资源从第一候选资源集合中排除。
在一种可选的实施方式中，第一阈值由高层信令配置，或者，所述第一阈值为协议预先规定的。
在一种可选的实施方式中，第二阈值、第三阈值和第四阈值由高层信令配置，或者，第二阈值、第三阈值和第四阈值为协议预先规定的。
在一种可选的实施方式中，检测单元，还用于检测第一资源上一个符号内一个或者多个物理资源块上的接收功率的线性平均值；或，还用于检测第一资源上一个符号内一个或者多个IRB上的接收功率的线性均值；或，还用于检测第一资源上一个符号内给定带宽内的接收功率的线性平均值；或，还用于检测第一资源上一个符号内给定子信道内接收功率的线性平均值，其中，子信道包含一个或者多个物理资源块。
第三方面，本申请实施例提供了一种芯片，所述芯片包括处理器与数据接口，所述处理器通过所述数据接口读取存储器上存储的指令，以执行如第一方面所述的方法。
第四方面，本申请实施例提供一种芯片模组，其特征在于，该芯片模组包括如第三方面所述的芯片。
第五方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令当被处理器执行时使所述处理器执行如第一方面所述的方法。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种梳齿资源块结构的示意图；
图2是本申请实施例提供的一种侧链路通信系统的结构示意图；
图3是本申请实施例提供的一种资源选择方法的流程示意图；
图4时本申请实施例提供的一种资源选择装置的结构示意图；
图5是本申请实施例提供的一种终端的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行阐述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素，此外，本申请不同实施例中具有同样命名的部件、特征、要素可能具有相同含义，也可能具有不同含义，其具体含义需以其在该具体实施例中的解释或者进一步结合该具体实施例中上下文进行确定。
本申请的技术方案可以适用于第五代移动通信(5Th Generation，5G)的侧链路通信系统中，或者第六代移动通信(6Th Generation，6G)的侧链路通信系统中或未来的其他侧链路通信系统中。
本申请实施例中，终端可以指各种形式的用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台(Mobile Station，MS)、远 方站、远程终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。终端还可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，简称PLMN)中的终端等，本申请实施例对此不做限定。
请参阅图2，图2是本申请实施例提供的一种侧链路(Sidelink)通信系统的结构示意图。该侧链路通信系统可以包括但不限于一个或多个终端，如图2所示的侧链路通信系统以一个用户设备1、一个用户设备2、一个用户设备3和一个用户设备4为例，其中，用户设备1、用户设备2、用户设备3和用户设备4之间可以相互建立侧链路进行通信。图2所示的设备数量和形态用于举例并不构成对本申请实施例的限定。
工作在非授权频谱的新空口(New Radio in Unlicensed Spectrum，NR-U)系统的设计中，为了满足非授权频谱的法规需求，引入了梳齿资源块(Interlaced Resource Block，IRB)的结构，一个梳齿资源块包含10个或者11个物理资源块，连续的两个可用物理资源块间隔M个物理资源块，其中，M为正整数。示例的，两个物理资源块(Physical Resource Block，PRB)之间可以间隔M个IRB，那么，对于IRB的索引m，PRB对应的索引为{m，M+m，2M+m，3M+m，…}，其中，m∈{0，1，…，M-1}。在NR-U系统中，针对15kHz和30kHz两种子载波间隔分别定义了IRB结构，如下表所示：
子载波间隔 M
15khz 10
30khz 5
如图2所示的侧链路通信系统工作在非授权频谱上时，也需要满足非授权频谱的法规需求。因此，现有的NR-U系统中IRB的结构设计可以引入到工作在非授权频谱的侧链路(Sidelink in Unlicensed Spectrum，SL-U)通信系统中。示例的，SL-U系统中IRB的结构如图1所示，图1中配置了5个IRB 资源，方框中的数字代表IRB索引，时隙中的第一个符号为自动增益控制(Automatic Gain Control，AGC)符号，最后一个符号为保护时段(Guard Period，GP)符号。图1中，物理侧链路共享信道1占据IRB0和IRB1，其对应的物理侧链路控制信道1(PysicalSidelink Control Channel，PSCCH)占据IRB0。PSSCH2占据IRB2，其对应的PSCCH2也占据IRB2。相邻的IRB存在邻带干扰，例如，图1中，IRB2会对IRB3或IRB1产生邻带干扰。由于不同的PSSCH信道的发送功率可能不同，造成远近效应，邻带干扰将会放大。
在SL-U通信系统中，如果用户设备之间距离较近，且选择相邻的IRB传输数据时，则会造成严重的远近效应。例如，如图2所示，UE1占用IRB2与UE3进行通信，UE2占据IRB3和UE4进行通信。由于IRB2会在IRB3上有邻带干扰，如果UE2的发射功率远小于UE1，或者UE2的位置和UE1的位置接近，则UE1发送给UE3的信号将会对UE2发送给UE4的信号造成严重的干扰，这种情况称为远近效应。
本申请提供一种资源选择方法，可以应用于如图2所示的侧链路通信系统中，终端检测第一资源上的接收信号强度指示RSSI，然后根据第一资源的RSSI对第一候选资源集合中的资源进行排除，得到第二候选资源集合，终端从第二候选资源集合中选择资源进行侧链路通信，有利于减少由于远近效应放大的邻带干扰带来的影响。
请参见图3，图3是本申请实施例提供的一种资源选择方法的流程示意图，该资源选择方法可应用于如图2所示的侧链路通信系统中。本申请实施例以上述终端为执行主体为例进行详细阐述。该资源选择方法包括以下步骤：
S301，检测第一资源上的接收信号强度指示RSSI。
其中，第一资源为IRB，是第一候选资源集合中的资源，第一候选资源集合中的资源用于侧链路通信。
在一种可选的实施方式中，第一候选资源集合中的资源为预留的资源，第一候选资源集合的初始集合所包括的资源可以是由高层信令配置的，或是由协议预先规定的。例如，第一候选资源集合的初始集合中的资源包括如图1所示的IRB0、IRB1、IRB2、IRB3、IRB4。
在一种可选的实施方式中，第一资源为第一候选资源集合中未被占用的资源。例如，图1中IRB0、IRB1、IRB3和IRB4在第一候选资源集合中，但IRB0为被占用的资源，IRB1、IRB3和IRB4没有被占用，因此IRB1、IRB3和IRB4为第一资源。
在一种可选的实施方式中，第一资源为与第二资源频域相邻的资源，其中，第二资源为IRB，满足以下条件中的至少一个：被占用，参考信号接收功率(Reference Signal Receiving Power，RSRP)大于第一阈值，已从第一候选资源集合中被排除。第一阈值由高层信令配置，或者第一阈值为协议预先规定的。例如，图1中IRB2为第二资源，IRB0、IRB1、IRB3和IRB4在第一候选资源集合中，IRB1和IRB3与第二资源频域相邻，因此IRB1和IRB3为第一资源。由于IRB之间存在邻带干扰，不同的PSSCH信道的发送功率可能不同，因此，当第二资源为被占用的资源时，选择第二资源相邻的资源进行侧链路通信时可能会造成远近效应，邻带干扰将会放大。因此，需要对第二资源的相邻资源进行RSSI测量，从而减少由于远近效应放大的邻带干扰带来的影响。同时，因为只需要对第二资源的相邻资源进行RSSI测量，可以节省功耗。
在一种可选的实施方式中，第一阈值的单位是dB或者dBm。
在一种可选的实施方式中，终端在感知窗口内接收并解码侧行链路控制信息(Sidelink Control Information，SCI)，根据解码成功的SCI的信息内容知道哪些资源被用于PSSCH传输。终端对承载了SCI的PSCCH上的解调参考信号(Demodulation Reference Signal，DMRS)或者PSCCH调度的PSSCH上的DMRS进行RSRP测量。终端将测量的RSRP与第一阈值比较，如果测量的RSRP高于第一阈值，则将对应的资源排除出第一候选资源集合，否则将对应的资源留在第一候选资源集合中。从第一候选资源集合中排除的对应的资源即为第二资源。同时，终端将因为半双工问题没有感知的资源也从第一候选资源集合中排除。例如，终端在感知窗口内接收并解码SCI，终端根据SCI的信息内容确定PSSCH占用了IRB2，即终端根据SCI信息内容知道了IRB2被用于进行侧链路通信，则终端对承载了SCI的PSCCH上的DMRS进 行RSRP测量，或者终端对承载了SCI的PSCCH调度的PSSCH上的DMRS进行RSRP测量。终端将测量的RSRP与第一阈值比较，如果测量的RSRP高于第一阈值，则将IRB2排除出第一候选资源集合，此时IRB2为第二资源。
在一种可选的实施方式中，检测第一资源上的接收信号强度指示(Received Signal Strength Indication，RSSI)，可以是检测第一资源上一个符号(symbol)内一个或者多个物理资源块上的接收功率的线性平均值。
在一种可选的实施方式中，检测第一资源上的RSSI，可以是检测第一资源上一个符号内一个或者多个IRB上的接收功率的线性平均值。
在一种可选的实施方式中，检测第一资源上的RSSI，可以是检测第一资源上一个符号内给定带宽内的接收功率的线性平均值。
在一种可选的实施方式中，检测第一资源上的RSSI，可以是检测第一资源上一个符号内给定子信道内接收功率的线性平均值，其中，子信道包含一个或者多个物理资源块。
在一种可选的实施方式中，RSSI的单位是dB或者dBm。
S302，根据第一资源的RSSI对第一候选资源集合中的资源进行排除，得到第二候选资源集合。
其中，第二候选资源集合中的资源为受到邻带干扰较小的资源，或者为没有受到邻带干扰的资源。
在一种可选的实施方式中，当第一资源上的RSSI大于第二阈值时，在第一候选资源集合中排除第一资源，得到第二候选资源集合。其中，第二阈值由高层信令配置，或者，第二阈值为协议预先规定的。例如，第一候选资源集合包括如图1所示的IRB0、IRB1、IRB3、IRB4，第一资源为IRB0、IRB1、IRB3和IRB4，当IRB0上的RSSI大于第二阈值时，终端将IRB0从第一候选资源集合中排除，得到第二候选资源集合，即第二候选资源集合中的资源包括IRB1、IRB3和IRB4。因此，终端通过RSSI将第一候选资源集合中的资源进行筛选，可以剔除掉第一候选资源集合中未被占用的资源，例如，将未被占用的资源中受到严重邻带干扰的资源从第一候选资源集合中排除，从而得到第二候选资源集合，终端在第二候选资源集合中选择资源进行侧链路通信 时，可以避免选择受到严重邻带干扰的资源，有利于减少由于远近效应放大的邻带干扰带来的影响。
在一种可选的实施方式中，若第二阈值较小，则可能会将第一候选资源集合中所有的资源都排除，从而造成没有可用的资源。所以，可以通过高层信令配置第三阈值，或是通过协议预先规定第三阈值，将阈值提高，例如提高3dB，也就是第三阈值比第二阈值高3dB。因此，若所有第一资源上的RSSI均大于第二阈值，将所有第一资源上的RSSI与第三阈值比较，从而可以排除掉受到严重邻带干扰的资源，留下受到较小邻带干扰的资源，使得第二候选资源集合中有可用的资源，并且受到的邻带干扰较小。若部分第一资源上的RSSI大于第三阈值，将RSSI大于第三阈值的第一资源从第一候选资源集合中排除，得到第二候选资源集合。以此类推，若所有第一资源上的RSSI均大于第三阈值，意味着还是没有可用的资源，因此可以通过高层信令配置第四阈值，或是通过协议预先规定第四阈值，将阈值提高，例如再提高3dB，也就是第四阈值比第三阈值高3dB，然后将第一资源上的RSSI与第四阈值比较。若部分第一资源上的RSSI大于第四阈值，将RSSI大于第四阈值的第一资源从第一候选资源集合中排除，得到第二候选资源集合。也就是说，若所有第一资源上的RSSI均大于第N-1阈值，则将所有第一资源上的RSSI与第N阈值比较，第N阈值大于第N-1阈值；若部分第一资源上的RSSI大于第N阈值，则将RSSI大于第N阈值的第一资源从第一候选资源集合中排除，得到第二候选资源集合。N为大于4的正整数，第N阈值由高层信令配置，或者，第N阈值为协议预先规定的。意味着，若第一资源上的RSSI与第N-1阈值进行比较后，没有可用的资源，则第一资源上的RSSI可以进一步与比第N-1阈值更高的第N阈值进行比较，直到得到的第二候选资源集合中存在可用的资源。
S303，从第二候选资源集合中选择资源进行侧链路通信。
在第一候选资源集合中，将受到严重邻带干扰的资源排除，从而第二候选资源集合中的资源受到的邻带干扰较小或没有受到邻带干扰，因此从第二候选资源集合中选择资源进行侧链路通信时有利于减少由于远近效应放大的 邻带干扰带来的影响。
例如，第一候选资源集合的初始集合中的资源包括如图1所示的IRB0、IRB1、IRB2、IRB3、IRB4。终端在感知窗口内接收并解码SCI，终端根据SCI的信息内容确定PSSCH1占用了IRB0和IRB1，PSSCH2占用了IRB2，即终端根据SCI信息内容知道了IRB0、IRB1和IRB2被用于进行侧链路通信。则终端对承载了SCI的PSCCH上的DMRS进行RSRP测量，或者终端对承载了SCI的PSCCH调度的PSSCH上的DMRS进行RSRP测量。终端将测量的RSRP与第一阈值比较，测量得到的IRB2上的RSRP高于第一阈值，测量得到的IRB0和IRB1上的RSRP低于第一阈值。因此，终端将IRB2从第一候选资源集合中排除，此时第一候选资源集合中包括IRB0、IRB1、IRB3、IRB4。第一候选资源集合中的IRB3、IRB4为未被占用的资源，也就是第一资源。终端检测第一资源上的RSSI，即检测IRB3和IRB4上的RSSI，IRB3和IRB2频域相邻，IRB3上的RSSI高于第二阈值，IRB4上的RSSI低于第二阈值，则终端将IRB3从第一候选资源集合中排除，得到第二候选资源集合，此时第二候选资源集合中包括IRB0、IRB1、IRB4。终端从第二候选资源集合中选择资源进行侧链路通信。
本申请实施例中，终端检测第一资源上的RSSI，并根据第一资源的RSSI对第一候选资源集合中的资源进行排除，得到第二候选资源集合；然后终端从第二候选资源集合中选择资源进行侧链路通信。因此，终端可以通过RSSI剔除未被占用的资源，例如将第一候选资源集合中受到严重邻带干扰的未被占用的资源排除，从而，终端不会选择这些受到严重邻带干扰的资源进行链路通信。相较于通过RSRP只能剔除已经被占用的资源来说，有利于减少由于远近效应放大的邻带干扰带来的影响。
请参见图4，图4是本申请实施例提供的一种资源选择装置的结构示意图。该资源选择装置400包括：检测单元401、排除单元402和选择单元403。
检测单元401，用于检测第一资源上的接收信号强度指示RSSI，第一资源为第一候选资源集合中的资源，第一候选资源集合中的资源用于侧链路通信。
排除单元402，根据第一资源的RSSI对第一候选资源集合中的资源进行排除，得到第二候选资源集合。
选择单元403，用于从第二候选资源集合中选择资源进行侧链路通信。
在一种可选的实施方式中，第一资源为第一候选资源集合中未被占用的资源。
在一种可选的实施方式中，第一资源为与第二资源频域相邻的资源，第二资源满足以下条件中的至少一个：被占用，参考信号接收功率RSRP大于第一阈值，已从所述第一候选资源集合中被排除。
在一种可选的实施方式中，第一资源、第二资源为梳齿资源块IRB。
在一种可选的实施方式中，该资源选择装置还包括比较单元，若所有第一资源上的RSSI均大于第二阈值，则该比较单元，用于将所有第一资源上的RSSI与第三阈值比较，其中，第三阈值大于第二阈值；若部分第一资源上的RSSI大于第三阈值，则排除单元402，还用于将RSSI大于第三阈值的第一资源从第一候选资源集合中排除；若所有第一资源上的RSSI均大于第三阈值，则比较单元，还用于将所有第一资源上的RSSI与第四阈值比较，第四阈值大于第三阈值；若部分第一资源上的RSSI大于第四阈值，则排除单元402，还用于将RSSI大于第四阈值的第一资源从第一候选资源集合中排除。
在一种可选的实施方式中，第一阈值由高层信令配置，或者，所述第一阈值为协议预先规定的。
在一种可选的实施方式中，第二阈值、第三阈值和第四阈值由高层信令配置，或者，第二阈值、第三阈值和第四阈值为协议预先规定的。
在一种可选的实施方式中，检测单元401，还用于检测第一资源上一个符号内一个或者多个物理资源块上的接收功率的线性平均值；或，还用于检测第一资源上一个符号内一个或者多个IRB上的接收功率的线性均值；或，还用于检测第一资源上一个符号内给定带宽内的接收功率的线性平均值；或，还用于检测第一资源上一个符号内给定子信道内接收功率的线性平均值，其中，子信道包含一个或者多个物理资源块。
其中，该实施方式的相关内容可参见上述方法实施例的相关内容。此处 不再详述。
本申请实施例中，终端检测第一资源上的RSSI，并根据第一资源的RSSI对第一候选资源集合中的资源进行排除，得到第二候选资源集合；然后终端从第二候选资源集合中选择资源进行侧链路通信。因此，终端可以通过RSSI剔除未被占用的资源，例如将第一候选资源集合中受到严重邻带干扰的未被占用的资源排除，从而，终端不会选择这些受到严重邻带干扰的资源进行链路通信。相较于通过RSRP只能剔除已经被占用的资源来说，有利于减少由于远近效应而放大的邻带干扰带来的影响。
请参见图5，图5是本申请实施例提供的一种终端的结构示意图。该终端500包括：处理器501、存储器502，处理器501和存储器502通过一条或多条通信总线连接。
上述处理器501可以是中央处理单元(Central Processing Unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
上述存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(Random Access Memory，RAM)可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM， ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。
处理器501被配置为终端执行图3所述方法中终端相应的功能。上述存储器502可以包括只读存储器和随机存取存储器，并向处理器501提供计算机程序和数据。存储器502的一部分还可以包括非易失性随机存取存储器。其中，所述处理器501调用所述计算机程序时用于执行：
检测第一资源上的接收信号强度指示RSSI，第一资源为第一候选资源集合中的资源，第一候选资源集合中的资源用于侧链路通信；
根据所述第一资源的RSSI对所述第一候选资源集合中的资源进行排除，得到第二候选资源集合；
从所述第二候选资源集合中选择资源进行侧链路通信。
在一种可选的实施方式中，第一资源为第一候选资源集合中未被占用的资源。
在一种可选的实施方式中，第一资源为与第二资源频域相邻的资源，第二资源满足以下条件中的至少一个：被占用，参考信号接收功率RSRP大于第一阈值，已从所述第一候选资源集合中被排除。
在一种可选的实施方式中，第一资源、第二资源为梳齿资源块IRB。
在一种可选的实施方式中，当第一资源上的RSSI大于第二阈值时，在第一候选资源集合中排除第一资源，得到第二候选资源集合。
在一种可选的实施方式中，若所有第一资源上的RSSI均大于第二阈值，将所有第一资源上的RSSI与第三阈值比较，第三阈值大于所述第二阈值；若部分第一资源上的RSSI大于第三阈值，将RSSI大于第三阈值的第一资源从第一候选资源集合中排除；若所有第一资源上的RSSI均大于第三阈值，将所有第一资源上的RSSI与第四阈值比较，第四阈值大于所述第三阈值；若部分第一资源上的RSSI大于第四阈值，将RSSI大于第四阈值的第一资源从第一候选资源集合中排除。
在一种可选的实施方式中，第一阈值由高层信令配置，或者，所述第一阈值为协议预先规定的。
在一种可选的实施方式中，第二阈值、第三阈值和第四阈值由高层信令配置，或者，第二阈值、第三阈值和第四阈值为协议预先规定的。
在一种可选的实施方式中，检测第一资源上一个符号内一个或者多个物理资源块上的接收功率的线性平均值；或，检测第一资源上一个符号内一个或者多个IRB上的接收功率的线性均值；或，检测第一资源上一个符号内给定带宽内的接收功率的线性平均值；或，检测第一资源上一个符号内给定子信道内接收功率的线性平均值，其中，子信道包含一个或者多个物理资源块。
其中，该实施方式的相关内容可参见上述方法实施例的相关内容。此处不再详述。
本申请实施例中，终端检测第一资源上的RSSI，并根据第一资源的RSSI对第一候选资源集合中的资源进行排除，得到第二候选资源集合；然后终端从第二候选资源集合中选择资源进行侧链路通信。因此，终端可以通过RSSI剔除未被占用的资源，例如将第一候选资源集合中受到严重邻带干扰的未被占用的资源排除，从而，终端不会选择这些受到严重邻带干扰的资源进行链路通信。相较于通过RSRP只能剔除已经被占用的资源来说，有利于减少由于远近效应而放大的邻带干扰带来的影响。
本申请实施例提供一种芯片。该芯片包括：处理器和存储器。其中，处理器的数量可以是一个或多个，存储器的数量可以是一个或多个。处理器通过读取存储器上存储的指令和数据，可执行上述如图3所示的资源选择方法，以及相关实施方式所执行的步骤。
本申请实施例还提供一种芯片模组，所述芯片模组包括上述芯片，可执行上述如图3所示的资源选择方法，以及相关实施方式所执行的步骤。
本申请实施例中还提供一种计算机可读存储介质。所述计算机可读存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令被处理器执行时，可执行上述图3所示的资源选择方法，以及相关实施方式所执行的步骤。
所述计算机可读存储介质可以是前述任一实施例所述的终端的内部存储单元，例如设备的硬盘或内存。所述计算机可读存储介质也可以是所述终端 的外部存储设备，例如所述设备上配备的插接式硬盘，智能存储卡(Smart Media Card，SMC)，安全数字(Secure Digital，SD)卡，闪存卡(Flash Card)等。进一步地，所述计算机可读存储介质还可以既包括终端的内部存储单元也包括外部存储设备。所述计算机可读存储介质用于存储所述计算机程序以及所述终端所需的其他程序和数据。所述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
上述实施例，可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
在本申请所提供的几个实施例中，应该理解到，所揭露的方法、装置和系统，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的；例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式；例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的部分步骤。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本申请一种较佳实施例而已，当然不能以此来限定本申请之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本申请权利要求所作的等同变化，仍属于申请所涵盖的范围。

Claims (21)

  1. 一种资源选择方法，其特征在于，所述方法包括：
    检测第一资源上的接收信号强度指示RSSI，所述第一资源为第一候选资源集合中的资源，所述第一候选资源集合中的资源用于侧链路通信；
    根据所述第一资源的RSSI对所述第一候选资源集合中的资源进行排除，得到第二候选资源集合；
    从所述第二候选资源集合中选择资源进行侧链路通信。
  2. 根据权利要求1所述的方法，其特征在于，所述第一资源为所述第一候选资源集合中未被占用的资源。
  3. 根据权利要求1所述的方法，其特征在于，所述第一资源为与第二资源频域相邻的资源，所述第二资源满足以下条件中的至少一个：被占用，参考信号接收功率RSRP大于第一阈值，已从所述第一候选资源集合中被排除。
  4. 根据权利要求3所述的方法，其特征在于，所述第一资源和所述第二资源为梳齿资源块IRB。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述根据所述第一资源的RSSI对所述第一候选资源集合中的资源进行排除，得到第二候选资源集合，包括：
    当所述第一资源上的RSSI大于第二阈值时，在所述第一候选资源集合中排除所述第一资源，得到第二候选资源集合。
  6. 根据权利要求1-4任一项所述的方法，其特征在于，所述根据所述第一资源的RSSI对所述第一候选资源集合中的资源进行排除，得到第二候选资源集合，包括：
    若所有所述第一资源上的RSSI均大于第二阈值，将所有所述第一资源上的RSSI与第三阈值比较，所述第三阈值大于所述第二阈值；
    若部分所述第一资源上的RSSI大于所述第三阈值，将RSSI大于所述第三阈值的第一资源从所述第一候选资源集合中排除；
    若所有所述第一资源上的RSSI均大于所述第三阈值，将所有所述第一资源上的RSSI与第四阈值比较，所述第四阈值大于所述第三阈值；
    若部分所述第一资源上的RSSI大于所述第四阈值，将RSSI大于所述第四阈值的第一资源从所述第一候选资源集合中排除。
  7. 根据权利要求3所述的方法，其特征在于，所述第一阈值由高层信令配置，或者，所述第一阈值为协议预先规定的。
  8. 根据权利要求6所述的方法，其特征在于，所述第二阈值、所述第三阈值和所述第四阈值由高层信令配置，或者，所述第二阈值、所述第三阈值和所述第四阈值为协议预先规定的。
  9. 根据权利要求1～8中任意一项所述的方法，其特征在于，所述检测第一资源上的RSSI，包括：
    检测所述第一资源上一个符号内一个或者多个物理资源块上的接收功率的线性平均值；或，
    检测所述第一资源上一个符号内一个或者多个IRB上的接收功率的线性均值；或，
    检测所述第一资源上一个符号内给定带宽内的接收功率的线性平均值；或，
    检测所述第一资源上一个符号内给定子信道内接收功率的线性平均值，所述子信道包含一个或者多个物理资源块。
  10. 一种资源选择装置，其特征在于，所述资源选择装置包括：
    检测单元，用于检测第一资源上的接收信号强度指示RSSI，所述第一资源为第一候选资源集合中的资源，所述第一候选资源集合中的资源用于侧链路通信；
    排除单元，用于根据所述第一资源的RSSI对所述第一候选资源集合中的资源进行排除，得到第二候选资源集合；
    选择单元，用于从所述第二候选资源集合中选择资源进行侧链路通信。
  11. 根据权利要求10所述的装置，其特征在于，所述第一资源为所述第一候选资源集合中未被占用的资源。
  12. 根据权利要求10所述的装置，其特征在于，所述第一资源为与第二资源频域相邻的资源，所述第二资源满足以下条件中的至少一个：被占用，参 考信号接收功率RSRP大于第一阈值，已从所述第一候选资源集合中被排除。
  13. 根据权利要求12所述的装置，其特征在于，所述第一资源和所述第二资源为梳齿资源块IRB。
  14. 根据权利要求10-13任一项所述的装置，其特征在于，所述根据所述第一资源的RSSI对所述第一候选资源集合中的资源进行排除，得到第二候选资源集合，所述排除单元用于：
    当所述第一资源上的RSSI大于第二阈值时，在所述第一候选资源集合中排除所述第一资源，得到第二候选资源集合。
  15. 根据权利要求10-13任一项所述的装置，其特征在于，所述根据所述第一资源的RSSI对所述第一候选资源集合中的资源进行排除，得到第二候选资源集合，所述排除单元用于：
    若所有所述第一资源上的RSSI均大于第二阈值，将所有所述第一资源上的RSSI与第三阈值比较，所述第三阈值大于所述第二阈值；
    若部分所述第一资源上的RSSI大于所述第三阈值，将RSSI大于所述第三阈值的第一资源从所述第一候选资源集合中排除；
    若所有所述第一资源上的RSSI均大于所述第三阈值，将所有所述第一资源上的RSSI与第四阈值比较，所述第四阈值大于所述第三阈值；
    若部分所述第一资源上的RSSI大于所述第四阈值，将RSSI大于所述第四阈值的第一资源从所述第一候选资源集合中排除。
  16. 根据权利要求12所述的装置，其特征在于，所述第一阈值由高层信令配置，或者，所述第一阈值为协议预先规定的。
  17. 根据权利要求15所述的装置，其特征在于，所述第二阈值、所述第三阈值和所述第四阈值由高层信令配置，或者，所述第二阈值、所述第三阈值和所述第四阈值为协议预先规定的。
  18. 根据权利要求10～17中任意一项所述的装置，其特征在于，所述检测第一资源上的RSSI，所述检查单元用于：
    检测所述第一资源上一个符号内一个或者多个物理资源块上的接收功率的线性平均值；或，
    检测所述第一资源上一个符号内一个或者多个IRB上的接收功率的线性均值；或，
    检测所述第一资源上一个符号内给定带宽内的接收功率的线性平均值；或，
    检测所述第一资源上一个符号内给定子信道内接收功率的线性平均值，所述子信道包含一个或者多个物理资源块。
  19. 一种芯片，其特征在于，所述芯片包括处理器与数据接口，所述处理器通过所述数据接口读取存储器上存储的指令，以执行如权利要求1至9任一项所述的方法。
  20. 一种芯片模组，其特征在于，该芯片模组包括如权利要求19所述的芯片。
  21. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令当被处理器执行时使所述处理器执行如权利要求1至9任一项所述的方法。
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