WO2021189193A1 - 资源选择方法、装置、电子设备和存储介质 - Google Patents

资源选择方法、装置、电子设备和存储介质 Download PDF

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Publication number
WO2021189193A1
WO2021189193A1 PCT/CN2020/080682 CN2020080682W WO2021189193A1 WO 2021189193 A1 WO2021189193 A1 WO 2021189193A1 CN 2020080682 W CN2020080682 W CN 2020080682W WO 2021189193 A1 WO2021189193 A1 WO 2021189193A1
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Prior art keywords
pssch
rsrp
received power
power threshold
resource selection
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PCT/CN2020/080682
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English (en)
French (fr)
Inventor
丁伊
赵振山
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/080682 priority Critical patent/WO2021189193A1/zh
Priority to CN202080051904.0A priority patent/CN114208091A/zh
Priority to JP2022515913A priority patent/JP7476301B2/ja
Priority to EP20927518.9A priority patent/EP4007203A4/en
Priority to KR1020227009171A priority patent/KR20220157356A/ko
Priority to CN202210226748.8A priority patent/CN114599016B/zh
Publication of WO2021189193A1 publication Critical patent/WO2021189193A1/zh
Priority to US17/679,982 priority patent/US20220182985A1/en

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    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • 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
    • 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
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a 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
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • 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
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • This application relates to the field of NR-V2X communications, and in particular to a method, device, electronic device, and storage medium for resource selection.
  • D2D Device to Device
  • SL Sidelink
  • 3rd Generation Partnership Project 3rd Generation Partnership Project
  • Mode A The transmission resources of the terminal are allocated by the base station, and the terminal transmits data on the side link according to the resources allocated by the base station; the base station can allocate resources for a single transmission to the terminal, or it can allocate a semi-static transmission for the terminal resource.
  • Mode B The vehicle-mounted terminal selects a transmission resource in the resource pool for data transmission. For example, the terminal may select transmission resources from the resource pool by means of listening, or select transmission resources from the resource pool by means of random selection.
  • NR-Vehicle to Everything there will also be a vehicle to vehicle (V2V) terminal-to-terminal communication mode, and NR-V2X requires Supports autonomous driving, so higher requirements are put forward for data interaction between vehicles, such as higher throughput, lower delay, higher reliability, larger coverage, and more flexible resource allocation.
  • the physical layer structure of NR-V2X is shown in Figure 1. It can be seen that the Physical Sidelink Control Channel (PSCCH) used to transmit side-line control information is included in the physical side-line shared channel used to transmit data. In (Physical Sidelink Shared Channel, PSSCH), this also means that PSCCH and PSSCH must be sent at the same time.
  • PSSCH Physical Sidelink Shared Channel
  • the standard only supports the initial transmission resources of the current data transport block (Transport Block, TB) to reserve the retransmission resources of the current TB, and the retransmission resources of the current TB reserve the retransmission resources of the current TB and the initial transmission resources of the previous TB.
  • Transmission resources or retransmission resources reserve the initial transmission resources or retransmission resources of the current TB.
  • the initial transmission resource of TB 2 reserves the retransmission resource 1 and retransmission resource 2 of TB 2
  • the retransmission resource 1 of TB 2 reserves the retransmission resource 2 of TB 2.
  • the initial transmission resource of TB 1 reserves the initial transmission resource of TB 2
  • the retransmission resource 1 of TB 1 reserves the retransmission resource 1 of TB 2
  • the retransmission resource 2 of TB 1 reserves the retransmission of TB 2.
  • Resource 2. The resource reservation intervals between the above three TBs are the same. Therefore, when the UE detects the PSCCH on the initial transmission resource of TB 1, it can determine the retransmission 1 resource and retransmission 2 resource of TB 1, and TB 2 The time-frequency resource location of the initial transmission resource. In addition, since the resource reservation intervals between TBs are the same, the UE can also calculate the time-frequency resource positions of the retransmission resource 1 and the retransmission resource 2 of the TB 2.
  • the UE can obtain the side control information sent by other UEs by listening to the PSCCH sent by other UEs, thereby knowing the resources reserved by other UEs.
  • the UE selects resources, it excludes resources reserved by other UEs, thereby avoiding resource collisions. Then, when the UE selects resources, whether it needs to exclude the resources reserved by other UEs also has a corresponding trigger mechanism.
  • PSCCH transmission only supports single-layer transmission (single DMRS port), and PSSCH transmission supports a maximum of two-layer transmission (single DMRS port or two DMRS ports).
  • PSSCH is described as a trigger mechanism for single-layer transmission in the NR-V2X standard.
  • an embodiment of the present invention provides a resource selection method, the method includes:
  • the user equipment UE compares the RSRP of the channel with the preset received power threshold; the channel is the PSCCH that the UE detects or the UE hears
  • the maximum number of DMRS ports is the maximum number of DMRS ports of the PSSCH scheduled by the PSCCH that the UE listens to, or the maximum number of DMRS ports of the PSSCH transmitted in the resource pool used by the UE;
  • an embodiment of the present invention provides a resource selection method, the method including:
  • the UE compares the RSRP of the channel with the preset received power threshold; the channel is the PSCCH detected by the UE or the PSSCH scheduled by the PSCCH detected by the UE;
  • an embodiment of the present invention provides a resource selection device, including:
  • the comparison module is configured to compare the RSRP of the channel with a preset received power threshold if the maximum number of DMRS ports corresponding to the PSSCH is at least two; the channel is the PSCCH that the UE has heard or the UE has detected For the PSSCH scheduled by the PSCCH heard, the maximum number of DMRS ports is the maximum number of DMRS ports of the PSSCH scheduled by the PSCCH heard by the UE, or the maximum number of DMRS ports of the PSSCH transmitted in the resource pool used by the UE;
  • the determining module is configured to determine whether to exclude the resources in the resource selection window of the UE according to the comparison result.
  • an embodiment of the present invention provides a resource selection device, including:
  • the comparison module is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the preset received power threshold if the resource pool used by the UE is configured to compare the DMRS in the SCI transmitted in the PSCCH monitored by the UE
  • the field corresponding to the number of ports is a preset value, and the UE compares the RSRP of the channel with the preset received power threshold;
  • the determining module is configured to determine whether to exclude the resources in the resource selection window of the UE according to the comparison result.
  • an embodiment of the present invention provides an electronic device, including: a processor, a memory, and a transceiver.
  • the processor, the memory, and the transceiver communicate with each other through an internal connection path.
  • the processor is configured to call the program code stored in the memory to cooperate with the transceiver to implement the steps of any one of the methods in the first aspect.
  • an embodiment of the present invention provides an electronic device, including: a processor, a memory, and a transceiver.
  • the processor, the memory, and the transceiver communicate with each other through an internal connection path.
  • the processor is configured to call the program code stored in the memory to cooperate with the transceiver to implement the steps of any one of the methods in the second aspect.
  • an embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method described in any one of the first aspects are implemented.
  • an embodiment of the present invention is a computer-readable storage medium with a computer program stored thereon, characterized in that, when the computer program is executed by a processor, the steps of any one of the methods described in the second aspect are implemented .
  • the UE compares the RSRP of the channel with the preset received power threshold, and compares The result determines whether to exclude the resources in the resource selection window of the UE, because the maximum number of DMRS ports corresponding to the PSSCH is the maximum number of DMRS ports of the PSSCH scheduled by the PSCCH that the UE listens to, or the number of PSSCH transmitted in the resource pool used by the UE The maximum number of DMRS ports.
  • the RSRP of the PSCCH or the scheduling of the PSCCH can be detected
  • the RSRP of the PSSCH is compared with the preset received power threshold, and it is determined whether to exclude the resources in the resource selection window of the UE according to the comparison result, so as to determine when the PSSCH is dual-layer transmission, according to two or more DMRS ports
  • the implementation method of comparing the measured RSRP value with SL-RSRP When PSSCH is dual-layer transmission, the RSRP value measured on the DMRS port can also be compared with SL-RSRP for resource selection, so that the resource selection method can be applied In a variety of scenarios.
  • FIG. 1 is a schematic diagram of the physical layer structure of NR-V2X provided by an embodiment
  • FIG. 2 is a schematic diagram of initial transmission or retransmission of a TB provided by an embodiment
  • Figure 3 is a schematic diagram of resource selection provided by an embodiment
  • Figure 4 is a schematic diagram of resource reselection provided by an embodiment
  • Figure 5 is a schematic diagram of PSSCH adopting double-layer transmission
  • FIG. 6 and FIG. 7 are respectively schematic diagrams of scenarios of the information configuration method provided by the embodiments of the application.
  • FIG. 8 is a flowchart of a method for resource selection according to an embodiment
  • FIG. 9 is a flowchart of a resource selection method provided by another embodiment.
  • FIG. 10 is a block diagram of a resource selection device provided by an embodiment
  • FIG. 11 is a schematic diagram of the internal structure of an electronic device in an embodiment.
  • NR-V2X there will also be a terminal-to-terminal communication mode such as V2V.
  • the UE can listen to the PSCCH sent by other UEs to obtain the side link control information sent by other UEs ( Sidelink Control Information (SCI), so as to know the resources reserved by other UEs.
  • SCI Sidelink Control Information
  • the UE selects resources, it excludes resources reserved by other UEs, thereby avoiding resource collisions.
  • the UE generates a data packet at time n and needs to perform resource selection, and all resources in the resource selection window are taken as set A.
  • the resource selection window starts from n+T1 and ends at n+T2.
  • T1> the time for the terminal to prepare to send data and to select resources
  • the UE performs resource monitoring from n-T0 to n-Tproc,0, the value of T0 is 100 or 1100 milliseconds, and Tproc,0 is the time required for the terminal to decode the control information.
  • the terminal sends data in some time slots in the listening window, but does not listen, it needs to exclude all resources on the corresponding time slots in the resource selection window for the time slots for sending data.
  • the terminal After removing all the resources on the corresponding time slots in the resource selection window for the time slots without resource monitoring by the above method, the terminal can calculate the SCI according to the resource reservation information in the SCI transmitted in the detected PSCCH
  • the reserved resources belonging to the resource selection window are excluded from set A, the method is as follows:
  • Step 1 If the terminal listens to the PSCCH in the listening resource window, it measures the RSRP of the PSCCH or the RSRP of the PSSCH scheduled by the PSCCH (that is, the RSRP of the PSSCH sent at the same time as the PSCCH). If the RSRP or PSSCH of the PSCCH is measured The RSRP is greater than the SL-RSRP threshold, and the reserved resource is determined to be within the resource selection window according to the resource reservation information in the SCI transmitted in the PSCCH, and the corresponding resource is excluded from the set A. If after the above two resource exclusions, the remaining resources in the resource set A are less than X% of the total resources of the initial resource set A, the SL-RSRP threshold is raised by 3dB, and step 1 is performed again.
  • Step 2 After excluding resources, the terminal randomly selects several resources from the remaining resources of set A as the sending resources for its initial transmission and retransmission.
  • the above-mentioned SL-RSRP threshold is determined by the priority P1 carried in the PSCCH intercepted by the terminal and the priority P2 of the data to be sent by the terminal.
  • the terminal obtains an SL-RSRP threshold table through network configuration or pre-configuration, and the SL-RSRP threshold table contains SL-RSRP thresholds corresponding to all priority combinations.
  • the SL-RSRP thresholds corresponding to different priority combinations are represented by ⁇ ij, where i in ⁇ ij is the priority level The value of P1, j is the value of priority level P2.
  • the terminal listens to the PSCCH sent by other UEs, obtains the priority P1 carried in the SCI transmitted in the PSCCH and the priority P2 of the data to be sent, and the terminal determines the SL-RSRP threshold by looking up Table 1.
  • whether the terminal uses the measured PSCCH-RSRP or the PSSCH-RSRP scheduled by the PSCCH to compare with the SL-RSRP threshold depends on the resource pool configuration of the resource pool used by the terminal.
  • the configuration of the resource pool can be network configuration or pre-configuration.
  • NR-V2X also supports re-evaluation of selected resources after resource selection and before sending the initial transmission.
  • the terminal generates data at time n, determines the resource listening window and resource selection window for resource selection, and the terminal selects the initial transmission resource x at time n+a, and the time n+b and n+c The retransmission resources y and z. After n time, the terminal will continue to listen to the PSCCH. In addition, the terminal performs the resource elimination process of Step 1 at least once at time n+a-T3, and T3 is the time required for the terminal to perform resource selection. If the resources x, y, and z are not excluded after the resource is excluded, there is no need to reselect resources. If part or all of the resources x, y, and z are excluded after the resource is excluded, the terminal will target the excluded resources. Resource reselection, or resource reselection for all selected resources x, y, z.
  • resource preemption is also supported.
  • the terminal selects resources x, y, and z at time n.
  • the terminal sends the initial transmission at time n+a and reserves the resources y and z, it will continue to listen to the PSCCH. If the terminal finds that other terminals with high priority have preempted the resource y or z, and the measured PSCCH-RSRP Or the PSSCH-RSRP is greater than the SL-RSRP threshold, and the terminal performs resource reselection for the preempted resources.
  • the SL-RSRP threshold is also determined by the priority P1 in the PSCCH that the terminal hears and the priority P2 of the data to be sent by the terminal.
  • the foregoing terminal performs resource selection at time n, resource selection in the re-evaluation process and resource selection for preempted resources, the SL-RSRP thresholds in these three cases may be the same or different.
  • PSCCH transmission only supports single-layer transmission (single DMRS port), and PSSCH transmission supports a maximum of two-layer transmission (single DMRS port or two DMRS ports).
  • the SCI transmitted in the PSCCH contains the field corresponding to the number of DMRS ports. For example, when the value of this field is 0, it means that the PSSCH scheduled by the PSCCH is single-layer transmission. When the value of this field is 1, it means that the PSSCH is a single-layer transmission.
  • the PSSCH scheduled by the PSCCH is dual-layer transmission.
  • FIG. 5 it is a schematic diagram of PSSCH adopting double-layer transmission.
  • a smallest unit in the frequency domain is a subcarrier, and a smallest unit in the time domain represents a symbol.
  • a subcarrier and a time domain symbol determine a resource element (RE).
  • the DMRS port 1000 and the DMRS port 1001 belong to a code division multiplexing (CDM) group, and the two are distinguished by orthogonal codes. All DATAREs of the two layers can be used to map data. Therefore, double-layer transmission can increase the throughput of PSSCH transmission.
  • the terminal transmits with equal power.
  • Step 1 when the UE performs resource selection at time n, performs Step 1 in the re-evaluation process, and performs resource reselection for preempted resources, all involve measuring the RSRP of the PSCCH that it hears or the PSSCH scheduled by the PSCCH.
  • the SL-RSRP threshold is compared with the SL-RSRP threshold.
  • the SL-RSRP threshold is determined by looking up the table according to the priority P1 carried in the detected PSCCH and the priority P2 of the data to be sent by the UE.
  • the resource pool used by the UE is configured or pre-configured to compare the RSRP of the PSSCH scheduled using PSCCH with the SL-RSRP threshold, if it meets:
  • the PSSCH-RSRP in Formula 1 is the RSRP of the PSSCH scheduled by the PSCCH that the UE listens to.
  • ⁇ ij is the SL-RSRP threshold
  • i is the value of the priority P1 carried in the monitored PSCCH
  • j is the value of the priority P2 of the data to be sent by the UE.
  • PSSCH single-layer transmission When the field corresponding to the number of DMRS ports in the SCI transmitted by the UE detected by the PSCCH is 1, that is, the PSSCH scheduled by the PSCCH adopts double-layer transmission, and the UE will measure two corresponding RSRP values according to the two DMRS ports. PSSCH-RSRP1000 and PSSCH-RSRP1001. At the same time, the transmission power of the two DMRS ports is half of the total transmission power, so PSSCH-RSRP1000 and PSSCH-RSRP1001 are almost half of PSSCH-RSRP when single-layer transmission is adopted.
  • PSSCH-RSRP1000 and PSSCH-RSRP1001 are applied to formula (1), that is, when PSSCH is dual-layer transmission, how to measure RSRP based on two DMRS ports is not discussed. The value is compared with SL-RSRP for resource exclusion.
  • the resource selection method provided in the embodiments of this application can solve the problem of "in the NR-V2X standardization process, when the PSSCH is dual-layer transmission, how to compare the RSRP value measured by the two DMRS ports with the SL-RSRP is not discussed. It should be noted that the information reporting processing method of this application is not limited to solving the above technical problems, but can also be used to solve other technical problems, and this application is not limited to this technical problem.
  • Fig. 6 and Fig. 7 are respectively schematic diagrams of scenarios of the information configuration method provided by the embodiments of the application.
  • this scenario includes network equipment 1, UE2, and UE3.
  • mode A is used for resource scheduling, that is, the data transmission resources of UE2 and UE3 are uniformly scheduled by network equipment 1.
  • this scenario includes UE4 and UE5.
  • mode B is used for resource scheduling, that is, the data transmission resources of UE4 and UE5 are obtained by the UE from the resource pool.
  • the network device 6 may also be included in the scenario, but the network device 6 will not participate in the resource scheduling of UE4 and UE5.
  • the network equipment 1 and the network equipment 6 may be base stations, core network equipment, etc., and may also be implemented by independent base stations or a base station cluster composed of multiple base stations.
  • the UE can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
  • Fig. 8 is a flowchart of a resource selection method provided by an embodiment.
  • the method involves when the maximum number of demodulation reference signal (Demodulation Reference Signal, DMRS) ports corresponding to PSSCH is at least two, the user equipment UE will The signal received power RSRP of the channel is compared with the preset received power threshold to determine whether to exclude the resources in the resource selection window of the UE.
  • the implementation of the method is either of FIG. 6 or FIG. 7.
  • the method may include the following steps:
  • the channel is the PSCCH monitored by the UE or the PSSCH scheduled by the PSCCH monitored by the UE
  • the maximum number of DMRS ports is the maximum number of DMRS ports of the PSSCH scheduled by the PSCCH monitored by the UE, or the number of DMRS ports transmitted in the resource pool used by the UE.
  • the maximum number of DMRS ports for PSSCH is the maximum number of DMRS ports of the PSSCH scheduled by the PSCCH monitored by the UE, or the number of DMRS ports transmitted in the resource pool used by the UE.
  • the maximum number of DMRS ports corresponding to the PSSCH may be the maximum number of DMRS ports indicated in the SCI transmitted in the PSCCH that the UE may detect. For example, when the UE detects the maximum number of DMRS ports transmitted in the PSCCH, When the field corresponding to the number of DMRS ports is 1, it indicates that the maximum number of DMRS ports corresponding to the PSSCH transmitted in the resource pool used by the UE is 2. Alternatively, the maximum number of DMRS ports corresponding to the PSSCH is also the maximum number of DMRS ports of the PSSCH transmitted in the resource pool used by the UE. The maximum number of DMRS ports corresponding to the PSSCH can also be determined by other methods, which is not used in this embodiment of the application. limit.
  • the UE when the UE determines that the maximum number of DMRS ports corresponding to the PSSCH is at least two, it compares the RSRP of the channel with the preset received power threshold, and the UE can compare the RSRP of the PSCCH that it has heard with the preset received power threshold.
  • the received power threshold is compared, and the RSRP of the monitored PSCCH scheduled PSSCH may also be compared with the preset received power threshold.
  • the received power threshold may be obtained according to Table 1. For example, the UE queries Table 1 to obtain the received power threshold according to the priority P1 carried in the detected PSCCH and the priority P2 of the data to be sent by the terminal.
  • the RSRP of the PSSCH scheduled by the PSCCH may be the RSRP of each DMRS port of the PSSCH, or the average RSRP of each DMRS port of the PSSCH, or it may be the sum of the RSRP of each DMRS port of the PSSCH, etc.
  • the UE can compare the RSRP of each DMRS port of the PSSCH with the received power threshold, or compare the RSRP average value of each DMRS port of the PSSCH with the received power threshold, or compare each DMRS port of the PSSCH The RSRP sum is compared with the received power threshold, and so on, which is not limited in the embodiment of the present application.
  • the UE uses the RSRP of the monitored PSCCH or the RSRP of the PSSCH scheduled by the PSCCH to compare with the received power threshold depends on the resource pool configuration of the resource pool used by the UE.
  • the configuration of the resource pool can be network configuration or Pre-configured.
  • S102 The UE determines whether to exclude resources in the resource selection window of the UE according to the comparison result.
  • the comparison result indicates the magnitude relationship between the RSRP of the channel and the preset received power threshold.
  • the UE determines whether it is necessary to exclude resources in the resource selection window of the UE according to the comparison result. Generally, when the RSRP of the channel is greater than the preset received power threshold, the UE excludes the resources in the resource selection window of the UE. For example, when the RSRP of the PSCCH that the UE hears is greater than the preset received power threshold, or when When the RSRP of the PSSCH scheduled by the PSCCH monitored by the UE is greater than the preset received power threshold, the resources in the resource selection window of the UE are excluded.
  • the UE performs resource selection at time n, which is the time when data arrives or when Step 1 is performed in the re-evaluation process, or when resource reselection is performed for preempted resources.
  • the UE determines the resource listening window [n-T0,n-Tproc,0] and the resource selection window [n+T1,n+T2], and listens in the resource listening window.
  • the UE can detect the RSRP of the PSCCH or the The RSRP of the PSCCH scheduled by the PSCCH is compared with the preset received power threshold.
  • the resource selection window of the UE [ Resources within n+T1, n+T2] are excluded.
  • excluding resources in the resource selection window of the UE includes: excluding target resources in the resource selection window, where the target resources are resources reserved by the SCI in the PSCCH detected by the UE.
  • the resource that the UE needs to exclude is the resource reserved by the SCI in the PSCCH that the UE listens to. That is, the UE needs to exclude the resource reserved by other UEs from its own resource selection window to avoid sharing UEs share resources, resulting in increased mutual interference.
  • the UE compares the RSRP of the channel with the preset received power threshold, and determines whether to select the resource of the UE according to the comparison result
  • the resources in the window are excluded, because the maximum number of DMRS ports corresponding to the PSSCH is the maximum number of DMRS ports of the PSSCH scheduled by the PSCCH that the UE listens to, or the maximum number of DMRS ports of the PSSCH transmitted in the resource pool used by the UE.
  • the RSRP of the PSCCH that is heard or the RSRP of the PSSCH scheduled by the PSCCH can be combined with the preset RSRP
  • the received power threshold is compared, and it is determined whether to exclude the resources in the resource selection window of the UE according to the comparison result, thereby determining that when the PSSCH is at least dual-layer transmission, the RSRP value measured according to two or more DMRS ports is compared with The implementation of SL-RSRP comparison.
  • the RSRP value measured by the DMRS port can also be compared with SL-RSRP for resource selection, so that the resource selection method can be applied in a variety of scenarios .
  • the maximum number of DMRS ports corresponding to the PSSCH is at least two.
  • the maximum number of DMRS ports corresponding to the PSSCH is at least two, including:
  • the resource pool is configured to compare the RSRP of the PSSCH scheduled by the detected PSCCH with the received power threshold, and the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH detected by the UE is a preset value.
  • the resource pool used by the UE is configured to use the PSCCH that is heard
  • the RSRP of the scheduled PSSCH is compared with the received power threshold, and the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH that the UE detects is a preset value, and the UE compares the RSRP of the channel with the preset received power threshold Resource exclusion has been performed.
  • the field corresponding to the number of DMRS ports in the SCI is a preset value
  • the number of DMRS ports in the SCI transmitted in the PSCCH is 2 or greater, that is, the PSSCH uses at least two-layer transmission
  • the preset value can be 1.
  • Can also be true, etc. which can be set by those skilled in the art according to actual needs, and is not limited in this embodiment.
  • the maximum number of DMRS ports corresponding to the PSSCH is at least two, including: the maximum number of DMRS ports of the PSSCH transmitted in the resource pool used by the UE is N, and N is greater than 1.
  • the UE’s data arrives at the time of Step 1 in the re-evaluation process or when resource reselection is required for preempted resources
  • the UE will The RSRP of the channel is compared with the preset received power threshold for resource exclusion.
  • N is greater than 2
  • N can be 2 or greater than 2, that is, when the PSSCH adopts at least two-layer transmission
  • the UE can compare the RSRP of the PSCCH it hears or the RSRP of the PSSCH scheduled by the PSCCH with the preset RSRP threshold. To exclude the resources in the resource selection window of the UE.
  • the maximum number of DMRS ports of the PSSCH is at least two, so that no matter in which scenario, when the PSSCH uses at least two-layer transmission, the UE can transfer the channel
  • the RSRP is compared with the preset received power threshold for resource exclusion, which improves the universality of resource selection.
  • the UE compares the signal received power RSRP of the channel with the preset received power threshold, including: the UE compares the RSRP of the PSCCH detected by the UE with the received power threshold.
  • determining whether to exclude the resources in the resource selection window of the UE according to the comparison result includes: if the comparison result is that the RSRP of the PSCCH heard is greater than the received power threshold, then the resources in the resource selection window of the UE are excluded .
  • the resource pool used by the UE when the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the SL-RSRP threshold, and when the UE detects the PSCCH transmitted in the SCI, the number of DMRS ports corresponds to When the domain is 1, or when the maximum number of DMRS ports of the PSSCH transmitted in the resource pool used by the UE is N (N>1), the UE compares the PSCCH-RSRP with the SL-RSRP threshold for resource exclusion.
  • the UE performs resource selection at time n, which is the time when data arrives or when Step 1 is performed in the re-evaluation process, or when resource reselection is performed for the preempted resources.
  • the UE determines the resource listening window [n-T0,n-Tproc,0] and the resource selection window [n+T1,n+T2], and according to the listening result in the resource listening window, selects the resources in the resource selection window To exclude.
  • the resource pool used by the UE is configured to use the RSRP of the PSSCH scheduled by the monitored PSCCH to compare with the preset RSRP threshold, and the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH transmitted by the UE is 1 When; or, when the maximum number of DMRS ports of the PSSCH transmitted in the resource pool used by the UE is N, N>1) If the formula (2) is satisfied:
  • the PSCCH-RSRP in formula 2 is the RSRP of the PSCCH that the UE listens to.
  • ⁇ ij is the preset RSRP threshold
  • i is the value of the priority P1 carried in the PSCCH that is heard
  • j is the value of the priority P2 of the data to be sent by the UE.
  • the resource pool used by the UE when the resource pool used by the UE is configured to use the RSRP of the PSSCH scheduled by the monitored PSCCH to compare with the preset RSRP threshold, and when the UE detects the PSCCH transmitted in the PSCCH When the field corresponding to the number of DMRS ports in the SCI is 1; or, when the maximum number of DMRS ports of PSSCH transmitted in the resource pool used by the UE is at least two, the UE compares the RSRP of the PSCCH detected with the received power threshold. Resource exclusion, the UE can measure and detect the RSRP of the PSCCH and compare it with the received power threshold.
  • FIG. 9 is a flowchart of a resource selection method provided by another embodiment.
  • the method involves comparing the RSRP of the PSSCH scheduled by the PSCCH and the preset received power threshold when the resource pool used by the UE is configured to use the monitored PSCCH. And, the UE sets the field corresponding to the number of DMRS ports in the SCI transmitted in the monitored PSCCH as a preset value, and the UE compares the RSRP of the channel with the preset received power threshold to implement a specific implementation of resource selection.
  • the execution subject of the method is any UE in FIG. 6 or FIG. 7. As shown in Figure 9, the method may include the following steps:
  • the resource pool used by the UE is configured to use the RSRP of the PSSCH scheduled by the detected PSCCH to compare with the preset received power threshold, and the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH detected by the UE If it is a preset value, the UE compares the RSRP of the channel with the preset received power threshold.
  • the channel is the PSCCH monitored by the UE or the PSSCH scheduled by the PSCCH monitored by the UE.
  • the above preset value can be 1, or it can be true, etc.
  • the field corresponding to the number of DMRS ports in the SCI is the preset value, it means that the number of DMRS ports in the SCI transmitted in the PSCCH is 2 or more than 2, that is, the PSSCH is at least Double-layer transmission is adopted, and the preset value can be set by those skilled in the art according to actual needs, which is not limited in this embodiment.
  • the UE when the UE performs Step 1 at the time of data arrival or in the re-evaluation process or performs resource reselection for preempted resources, if the resource pool used by the UE is configured to use the PSCCH that it hears
  • the RSRP of the scheduled PSSCH is compared with the preset received power threshold, and the UE sets the field corresponding to the number of DMRS ports in the SCI transmitted in the monitored PSCCH as the preset value, and the UE compares the RSRP of the channel with the preset received power threshold.
  • the received power threshold is compared.
  • the UE may compare the RSRP of the detected PSCCH with the preset received power threshold, and may also compare the RSRP of the monitored PSCCH with the preset received power threshold.
  • the received power threshold may be obtained according to Table 1. For example, the UE queries Table 1 to obtain the received power threshold according to the priority P1 carried in the detected PSCCH and the priority P2 of the data to be sent by the terminal.
  • the RSRP of the PSSCH scheduled by the PSCCH may be the RSRP of each DMRS port of the PSSCH, or the average RSRP of each DMRS port of the PSSCH, or it may be the sum of the RSRP of each DMRS port of the PSSCH, etc.
  • the UE can compare the RSRP of each DMRS port of the PSSCH with the received power threshold, or compare the RSRP average value of each DMRS port of the PSSCH with the received power threshold, or compare each DMRS port of the PSSCH The RSRP sum is compared with the received power threshold, and so on, which is not limited in the embodiment of the present application.
  • the UE uses the RSRP of the monitored PSCCH or the RSRP of the PSSCH scheduled by the PSCCH to compare with the received power threshold depends on the resource pool configuration of the resource pool used by the UE.
  • the configuration of the resource pool can be network configuration or Pre-configured.
  • the UE determines whether it is necessary to exclude resources in the resource selection window of the UE according to the comparison result. Generally, when the RSRP of the channel is greater than the preset received power threshold, the UE excludes the resources in the resource selection window of the UE. For example, when the RSRP of the PSCCH that the UE detects is greater than the preset received power threshold, or when When the RSRP of the PSSCH scheduled by the PSCCH monitored by the UE is greater than the preset received power threshold, the resources in the resource selection window of the UE are excluded.
  • the UE performs resource selection at time n, which is the time when data arrives or when Step 1 is performed in the re-evaluation process, or when resource reselection is performed for preempted resources.
  • the UE determines the resource listening window [n-T0,n-Tproc,0] and the resource selection window [n+T1,n+T2], when the resource pool used by the UE is configured to use the RSRP of the PSSCH scheduled by the PSCCH that it hears Compared with the preset received power threshold, and the UE sets the field corresponding to the number of DMRS ports in the SCI transmitted in the detected PSCCH to the preset value, then the UE can compare the RSRP of the detected PSCCH or the RSRP of the PSCCH.
  • the RSRP of the scheduled PSSCH is compared with the preset received power threshold.
  • the resource selection window of the UE [n+ Resources within T1,n+T2] are excluded.
  • the RSRP of the PSSCH scheduled with the preset received power threshold is compared, and the UE will transmit the detected PSCCH
  • the field corresponding to the number of DMRS ports in the SCI is the preset value
  • the UE compares the RSRP of the channel with the preset received power threshold, and determines whether to exclude the resources in the resource selection window of the UE according to the comparison result.
  • the field corresponding to the number of DMRS ports in the SCI transmitted in the monitored PSCCH is a preset value, it means that the PSSCH is at least dual-layer transmission.
  • the RSRP of the monitored PSCCH or the RSRP of the PSSCH scheduled by the PSCCH can be combined with The preset received power threshold is compared, and based on the comparison result, it is determined whether to exclude the resources in the resource selection window of the UE, so as to determine when the PSSCH is at least dual-layer transmission, according to the measured value of two or more DMRS ports.
  • the UE can compare the RSRP of the PSCCH that it hears with the preset received power threshold, or it can compare the RSRP of the PSCCH that it hears and the preset received power. Thresholds are compared.
  • the implementation of comparing the RSRP of the PSCCH that the UE has heard with the preset received power threshold has been described in detail. The following focuses on the PSSCH scheduled for the PSCCH that the UE will hear.
  • the RSRP is compared with the preset received power threshold.
  • the UE comparing the signal received power RSRP of the channel with the preset received power threshold includes: the UE compares the RSRP of the PSSCH with the received power threshold; the PSSCH is the PSSCH scheduled by the PSCCH that the UE listens to.
  • determining whether to exclude the resources in the resource selection window of the UE according to the comparison result includes: if the comparison result is that the RSRP of the PSSCH is greater than the received power threshold, excluding the resources in the resource selection window of the UE.
  • the RSRP of the PSSCH scheduled by the monitored PSCCH is compared with the SL-RSRP threshold, and when the UE detects the number of DMRS ports in the SCI transmitted in the PSCCH When the corresponding field is 1, the UE lowers the SL-RSRP threshold by M dB or the UE increases the measured PSSCH-RSRP value by M dB.
  • M is network configuration or pre-configuration or determined according to resource pool configuration information or selected by the UE.
  • the UE performs resource selection at time n, which is the time when data arrives or when Step 1 is performed in the re-evaluation process, or when resource reselection is performed for the preempted resources.
  • the UE determines the resource listening window [n-T0,n-Tproc,0) and the resource selection window [n+T1,n+T2], and according to the listening result in the resource listening window, selects the resource in the resource To exclude.
  • the UE When the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the RSRP threshold, and the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH transmitted by the UE is 1, the UE will The RSRP of the PSSCH scheduled by the monitored PSCCH is compared with the RSRP threshold for resource selection.
  • the UE compares the RSRP of the PSSCH with an RSRP threshold.
  • the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH that the UE hears is 1, it means that the PSSCH scheduled by the PSCCH is dual-layer transmission, because the transmission power of the two DMRS ports is the transmission power of the PSSCH during the dual-layer transmission of the PSSCH.
  • the RSRP of the PSSCH measured by the UE is almost half of the RSRP of the PSSCH during single-layer transmission.
  • the UE compares the RSRP of the PSSCH with the received power threshold, including: the UE lowers the received power threshold according to a preset adjustment value to obtain the lowered received power threshold; the UE compares the RSRP of the PSSCH with the received power threshold. The received power threshold is compared.
  • the resource pool used by the UE when the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the RSRP threshold, and when the UE detects the PSCCH transmitted in the SCI, the number of DMRS ports corresponds to When the domain is 1, if formula (3) is satisfied:
  • the PSSCH-RSRP in formula 3 is the RSRP of the PSSCH scheduled by the PSCCH that the UE listens to.
  • ⁇ ij is the SL-RSRP threshold
  • i is the value of the priority P1 carried in the monitored PSCCH
  • j is the value of the priority P2 of the data to be sent by the UE.
  • M is the lower adjustment value of the SL-RSRP threshold, for example, M is 3dB
  • M is network configuration or pre-configuration or determined according to resource pool configuration information or selected by the UE.
  • the UE comparing the RSRP of the PSSCH with the received power threshold includes: the UE increases the RSRP of the PSSCH according to a preset adjustment value to obtain the RSRP of the PSSCH after the increase; the UE adjusts the RSRP of the PSSCH after the increase RSRP is compared with the received power threshold.
  • the resource pool used by the UE when the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the RSRP threshold, and when the UE detects the PSCCH transmitted in the SCI, the number of DMRS ports corresponds to When the domain is 1, if formula (4) is satisfied:
  • the PSSCH-RSRP in formula 4 is the RSRP of the PSSCH scheduled by the PSCCH that the UE listens to.
  • ⁇ ij is the SL-RSRP threshold
  • i is the value of the priority P1 carried in the monitored PSCCH
  • j is the value of the priority P2 of the data to be sent by the UE.
  • M is the upper adjustment value of PSSCH-RSRP, for example, M is 3dB
  • M is network configuration or pre-configuration or determined according to resource pool configuration information or selected by the UE.
  • the UE compares the RSRP of the PSSCH scheduled by the monitored PSCCH with the RSRP threshold for resource selection.
  • the remaining resources can be used by the UE for initial transmission and retransmission, thereby ensuring the reliability of data transmission and ensuring the uniformity of UE behavior between single-layer transmission and multi-layer transmission And fairness.
  • the UE comparing the signal received power RSRP of the channel with the preset received power threshold includes: the UE compares the average value of the RSRP of each DMRS port of the PSSCH with the received power threshold; PSSCH is the UE's detection PSCCH scheduling PSSCH.
  • determining whether to exclude the resources in the resource selection window of the UE according to the comparison result includes: if the comparison result is that the average RSRP of each DMRS port of the PSSCH is greater than the received power threshold, then determining whether to exclude the resources in the resource selection window of the UE Resources are excluded.
  • the UE when the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH that the UE listens to is 1, the UE measures two RSRP values according to the two DMRS ports of the PSSCH, PSSCH-RSRP1000 and PSSCH- For RSRP1001, the UE uses the average value of PSSCH-RSRP1000 and PSSCH-RSRP1001 to compare with the SL-RSRP threshold. Or, the UE uses the average value of PSSCH-RSRP1000 and PSSCH-RSRP1001 to compare with the SL-RSRP threshold that is adjusted down by M dB, or increases the average value of PSSCH-RSRP1000 and PSSCH-RSRP1001 by MdB and compares it with the SL-RSRP threshold.
  • M is network configuration or pre-configuration or determined according to resource pool configuration information or selected by the UE.
  • the UE performs resource selection at time n, which is the time when data arrives or when Step 1 is performed in the re-evaluation process, or when resource reselection is performed for preempted resources.
  • the UE determines the resource listening window [n-T0,n-Tproc,0) and the resource selection window [n+T1,n+T2], and according to the listening result in the resource listening window, selects the resource in the resource To exclude.
  • the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the SL-RSRP threshold, and when the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH transmitted by the UE is 1 , The UE calculates the average value of RSRP of each DMRS port of the PSSCH scheduled by the PSCCH and compares the average value of RSRP of each DMRS port with the received power threshold. If the average value of RSRP of each DMRS port is greater than the received power threshold, Then, the resources in the resource selection window of the UE are excluded.
  • the UE compares the RSRP of the PSSCH with an RSRP threshold.
  • the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH that the UE hears is 1, it means that the PSSCH scheduled by the PSCCH is dual-layer transmission, because the transmission power of the two DMRS ports is the transmission power of the PSSCH during the dual-layer transmission of the PSSCH.
  • the RSRP of the PSSCH measured by the UE is almost half of the RSRP of the PSSCH during single-layer transmission. In order to maintain the fairness of the comparison inequality It is necessary to increase the RSRP of PSSCH or decrease the RSRP threshold.
  • the UE compares the average value of the RSRP of each DMRS port of the PSSCH with the received power threshold, including: the UE lowers the received power threshold according to the preset adjustment value to obtain the reduced received power threshold; The average value of RSRP of each DMRS port of the PSSCH is compared with the reduced received power threshold.
  • PSSCH-RSRP1000 and PSSCH-RSRP1001 are the RSRP values measured by the UE respectively according to the two DMRS ports of the PSSCH, mean (PSSCH-RSRP1000, PSSCH-RSRP1001) means to average the PSSCH-RSRP1000 and PSSCH-RSRP1001, for example, you can It is a linear average, can be a weighted average, etc., and is not limited in the embodiments of the present application.
  • ⁇ ij is the SL-RSRP threshold
  • i is the value of the priority P1 carried in the monitored PSCCH
  • j is the value of the priority P2 of the data to be sent by the UE.
  • M is the lower adjustment value of the SL-RSRP threshold, for example, M is 3dB
  • M is network configuration or pre-configuration or determined according to resource pool configuration information or selected by the UE.
  • the UE compares the average value of the RSRP of each DMRS port of the PSSCH with the received power threshold, including: the UE increases the average value according to the preset adjustment value to obtain the adjusted average value; the UE adjusts it up The latter average value is compared with the received power threshold.
  • PSSCH-RSRP1000 and PSSCH-RSRP1001 are the RSRP values measured by the UE according to the two DMRS ports of the PSSCH respectively, mean (PSSCH-RSRP1000, PSSCH-RSRP1001) means to average the PSSCH-RSRP1000 and PSSCH-RSRP1001, for example, you can It is a linear average, can be a weighted average, etc., and is not limited in the embodiments of the present application.
  • ⁇ ij is the SL-RSRP threshold
  • i is the value of the priority P1 carried in the monitored PSCCH
  • j is the value of the priority P2 of the data to be sent by the UE.
  • M is the upper adjustment value of mean (PSSCH-RSRP1000, PSSCH-RSRP1001), for example, M is 3dB
  • M is network configuration or pre-configuration or determined according to resource pool configuration information or selected by the UE.
  • the UE calculates the average RSRP of each DMRS port of the PSSCH scheduled by the PSCCH and compares the average RSRP of each DMRS port with the received power threshold
  • the average RSRP of each DMRS port can be compared with the received power threshold for resource selection, and the average RSRP of each DMRS port can be compared before the comparison Increase or decrease the RSRP threshold to ensure that after the UE excludes the resources in the resource selection window, the remaining resources can meet the UE's initial transmission and retransmission requirements, thereby ensuring the reliability of data transmission and ensuring single-layer transmission Uniformity and fairness of
  • the UE compares the signal received power RSRP of the channel with the preset received power threshold, including: the UE compares the RSRP sum of each DMRS port of the PSSCH with the received power threshold; PSSCH is the UE's detection PSCCH scheduling PSSCH.
  • determining whether to exclude the resources in the resource selection window of the UE according to the comparison result includes: if the comparison result is that the sum of RSRP of each DMRS port of the PSSCH is greater than the received power threshold, then selecting the resources in the resource selection window of the UE To exclude.
  • the resource pool used by the UE when the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the SL-RSRP threshold, and the number of DMRS ports in the SCI transmitted in the PSCCH detected by the UE corresponds to
  • the UE measures two RSRP values according to the two DMRS ports of the PSSCH, PSSCH-RSRP1000 and PSSCH-RSRP1001, and the UE uses the sum of PSSCH-RSRP1000 and PSSCH-RSRP1001 to compare with the SL-RSRP threshold.
  • the UE performs resource selection at time n, which is the time when data arrives or when Step 1 is performed in the re-evaluation process, or when resource reselection is performed for the preempted resources.
  • the UE determines the resource listening window [n-T0,n-Tproc,0) and the resource selection window [n+T1,n+T2], and according to the listening result in the resource listening window, selects the resource in the resource To exclude.
  • the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the SL-RSRP threshold, and when the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH transmitted by the UE is 1 , If the formula (7) is satisfied:
  • PSSCH-RSRP1000 and PSSCH-RSRP1001 in formula 7 are the RSRP values measured by the UE according to the two DMRS ports of the PSSCH, respectively.
  • ⁇ ij is the SL-RSRP threshold
  • i is the value of the priority P1 carried in the monitored PSCCH
  • j is the value of the priority P2 of the data to be sent by the UE.
  • the UE compares the RSRP sum of each DMRS port of the PSSCH with the received power threshold to ensure that the PSSCH is dual-layer transmission, and the sum of the RSRP of each DMRS port of the PSSCH can be compared with the received power Threshold comparison for resource selection.
  • the UE comparing the signal received power RSRP of the channel with the preset received power threshold includes: the UE compares the RSRP of at least one DMRS port of the PSSCH with the received power threshold; PSSCH is the PSCCH that the UE listens to Scheduled PSSCH.
  • the resource pool used by the UE when the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the SL-RSRP threshold, and when the UE hears the DMRS port in the SCI transmitted in the PSCCH
  • the UE measures two RSRP values according to the two DMRS ports of the PSSCH, PSSCH-RSRP1000 and PSSCH-RSRP1001.
  • the UE uses PSSCH-RSRP1000 or PSSCH-RSRP1001 to compare with the SL-RSRP threshold.
  • the UE compares the RSRP of the PSSCH with an RSRP threshold.
  • the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH that the UE hears is 1, it means that the PSSCH scheduled by the PSCCH is dual-layer transmission, because the transmission power of the two DMRS ports is the transmission power of the PSSCH during the dual-layer transmission of the PSSCH.
  • the RSRP of the PSSCH measured by the UE is almost half of the RSRP of the PSSCH during single-layer transmission. In order to maintain the fairness of the comparison inequality It is necessary to increase the RSRP of PSSCH or decrease the RSRP threshold.
  • the UE comparing the RSRP of at least one DMRS port of the PSSCH with the received power threshold includes: the UE lowers the received power threshold according to a preset adjustment value to obtain the lowered received power threshold; the UE adjusts the PSSCH The RSRP of at least one DMRS port is compared with the reduced received power threshold.
  • the UE performs resource selection at time n, which is the time when data arrives or when Step 1 is performed in the re-evaluation process, or when resource reselection is performed for preempted resources.
  • the UE determines the resource listening window [n-T0,n-Tproc,0) and the resource selection window [n+T1,n+T2], and according to the listening result in the resource listening window, selects the resource in the resource To exclude.
  • the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the SL-RSRP threshold, and when the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH transmitted by the UE is 1 , If the formula (8) is satisfied:
  • PSSCH-RSRP100X is PSSCH-RSRP1000 or PSSCH-RSRP1001
  • PSSCH-RSRP1000 and PSSCH-RSRP1001 are the RSRP values measured by the UE according to the two DMRS ports of the PSSCH respectively.
  • ⁇ ij is the SL-RSRP threshold
  • i is the value of the priority P1 carried in the monitored PSCCH
  • j is the value of the priority P2 of the data to be sent by the UE.
  • M is the lower adjustment value of the SL-RSRP threshold, for example, M is 3dB
  • M is network configuration or pre-configuration or determined according to resource pool configuration information or selected by the UE.
  • the UE comparing the RSRP of the at least one DMRS port of the PSSCH with the received power threshold includes: the UE increases the RSRP of the at least one DMRS port according to a preset adjustment value to obtain the adjusted RSRP of the at least one DMRS port RSRP: The UE compares the RSRP adjusted by at least one DMRS port with the received power threshold.
  • the UE performs resource selection at time n, which is the time when data arrives or when Step 1 is performed in the re-evaluation process, or when resource reselection is performed for preempted resources.
  • the UE determines the resource listening window [n-T0,n-Tproc,0) and the resource selection window [n+T1,n+T2], and according to the listening result in the resource listening window, selects the resource in the resource To exclude.
  • the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the SL-RSRP threshold, and when the field corresponding to the number of DMRS ports in the SCI transmitted in the PSCCH transmitted by the UE is 1 , If the formula (9) is satisfied:
  • PSSCH-RSRP100X is PSSCH-RSRP1000 or PSSCH-RSRP1001
  • PSSCH-RSRP1000 and PSSCH-RSRP1001 are the RSRP values measured by the UE according to the two DMRS ports of the PSSCH respectively.
  • ⁇ ij is the SL-RSRP threshold
  • i is the value of the priority P1 carried in the monitored PSCCH
  • j is the value of the priority P2 of the data to be sent by the UE.
  • M is the upper adjustment value of PSSCH-RSRP100X, for example, M is 3dB
  • M is network configuration or pre-configuration or determined according to resource pool configuration information or selected by the UE.
  • the UE when the resource pool used by the UE is configured to use the RSRP of the PSSCH scheduled by the monitored PSCCH to compare with the SL-RSRP threshold, and when the UE detects the SCI transmitted in the PSCCH When the field corresponding to the number of DMRS ports is 1, the UE compares the RSRP of at least one DMRS port of the PSSCH with the reduced received power threshold.
  • the UE When the RSRP of at least one DMRS port of the PSSCH is greater than the received power threshold, the UE’s resource When the resources in the selection window are excluded to ensure that the PSSCH is dual-layered transmission, the resource selection can be performed based on the comparison between the RSRP of each DMRS port of the PSSCH and the received power threshold. In addition, the RSRP of each DMRS port can be increased or the RSRP threshold can be lowered before the comparison to ensure that after the UE excludes the resources in the resource selection window, the remaining resources can meet the UE's requirements for initial transmission and retransmission, thereby To ensure the reliability of data transmission, it can also ensure the uniformity and fairness of UE behavior between single-layer transmission and multi-layer transmission.
  • the UE can randomly select a DMRS port from the DMRS ports of the PSSCH, and compare the RSRP of the DMRS port with the received power threshold. Then the UE compares the RSRP of at least one DMRS port of the PSSCH with the received power threshold, including: the UE compares the RSRP of any DMRS port of the PSSCH with the received power threshold.
  • determining whether to exclude the resources in the resource selection window of the UE according to the comparison result includes: if the comparison result is that the RSRP of any DMRS port is greater than the received power threshold, then the resources in the resource selection window of the UE are excluded.
  • the UE measures two RSRP values respectively according to the two DMRS ports of the PSSCH, PSSCH-RSRP1000 and PSSCH-RSRP1001.
  • the UE compares the PSSCH-RSRP1000 or PSSCH-RSRP1001 with the SL-RSRP threshold, and when the PSSCH-RSRP1000 or PSSCH-RSRP1001 is greater than the SL-RSRP threshold, the resources in the resource selection window of the UE are excluded.
  • the UE can randomly select a DMRS port from the DMRS ports of the PSSCH, and compare the RSRP of the DMRS port with the received power threshold. There is no need to compare the RSRP of all the DMRS ports of the PSSCH with the RSRP threshold, thereby reducing the load on the UE.
  • the UE may also compare the RSRP of each DMRS port of the PSSCH with the received power threshold, and the UE compares the RSRP of at least one DMRS port of the PSSCH with the received power threshold, including: the UE compares each of the PSSCH The RSRP of the DMRS port is compared with the received power threshold.
  • determining whether to exclude the resources in the resource selection window of the UE according to the comparison result includes: if the comparison result is that the RSRP of at least one DMRS port of the PSSCH is greater than the received power threshold, performing the resource selection window for the UE exclude.
  • the UE measures two RSRP values respectively according to the two DMRS ports of the PSSCH, PSSCH-RSRP1000 and PSSCH-RSRP1001.
  • the UE compares the PSSCH-RSRP1000 and PSSCH-RSRP1001 with the SL-RSRP threshold, and when at least one of the PSSCH-RSRP is greater than the SL-RSRP threshold, the resources in the resource selection window of the UE are excluded.
  • the received power of the two DMRS ports of the PSSCH is the same, in actual scenarios, the received power of the two DMRS ports of the PSSCH may also be different.
  • the UE compares the RSRP of each DMRS port of the PSSCH with The received power threshold is compared, and when the RSRP of at least one DMRS port of the PSSCH is greater than the received power threshold, the resources in the resource selection window of the UE are excluded to ensure the accuracy of resource exclusion.
  • Embodiment 3 Embodiment 4, and Embodiment 5 can be used as a parallel method with Embodiment 2, or can be used as a refinement of various different implementations of PSSCH-RSRP in Embodiment 2. Be restricted.
  • the resource selection method provided in this embodiment is mainly applied to the scenario where the UE uses single-layer transmission.
  • the maximum number of DMRS ports corresponding to the PSSCH is at least two, including: the resource pool used by the UE is configured to use the PSCCH scheduled by the PSCCH.
  • the RSRP of the UE is compared with the received power threshold, and the field corresponding to the number of DMRS ports in the sideline control information transmitted in the PSCCH transmitted by the UE is a preset value, and the data to be sent by the UE is sent in a single layer of the PSSCH.
  • the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the received power threshold, and the DMRS port in the sideline control information transmitted in the PSCCH transmitted by the UE
  • the field corresponding to the number is a preset value, and if the data to be sent by the UE is sent in a single layer of PSSCH, the UE compares the RSRP of the channel with the preset received power threshold.
  • the difference from the previous embodiment is that not only is the resource pool used by the UE configured to compare the RSRP of the PSSCH scheduled with the detected PSCCH with the received power threshold, but also the PSCCH detected by the UE is compared with the received power threshold.
  • the field corresponding to the number of DMRS ports in the transmitted side control information is a preset value, and when the data to be sent by the UE is sent in a single layer of PSSCH, the UE compares the RSRP of the channel with the preset received power threshold for resource selection .
  • the UE comparing the RSRP of the channel with the preset received power threshold includes: the UE compares the RSRP of the PSSCH with the received power threshold; the PSSCH is the PSSCH scheduled by the PSCCH that the UE listens to.
  • determining whether to exclude the resources in the resource selection window of the UE according to the comparison result includes: if the comparison result is that the RSRP of the PSSCH is greater than the received power threshold, excluding the resources in the resource selection window of the UE.
  • the resource pool used by the UE when the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the SL-RSRP threshold, and the number of DMRS ports in the SCI transmitted in the PSCCH detected by the UE corresponds to
  • the UE measures two RSRP values according to the two DMRS ports of the PSSCH, PSSCH-RSRP1000 and PSSCH-RSRP1001, and the UE can use PSSCH-RSRP1000 or PSSCH -RSRP1001 or the average value of PSSCH-RSRP1000 and PSSCH-RSRP1001 is compared with the SL-RSRP threshold, which is not limited in the embodiment of the present application.
  • the UE comparing the RSRP of the PSSCH with the received power threshold includes: the UE compares the RSRP of at least one DMRS port of the PSSCH with the received power threshold.
  • the UE comparing the RSRP of the PSSCH with the received power threshold includes: the UE compares the average value of the RSRP of each DMRS port of the PSSCH with the received power threshold.
  • the UE performs resource selection at time n, which is the time when data arrives or when Step 1 is performed in the re-evaluation process, or when resource reselection is performed for preempted resources.
  • the UE determines the resource listening window [n-T0,n-Tproc,0) and the resource selection window [n+T1,n+T2], and according to the listening result in the resource listening window, selects the resource in the resource To exclude.
  • the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the monitored PSCCH with the SL-RSRP threshold, and when the UE detects the PSCCH transmitted in the SCI, the field corresponding to the number of DMRS ports in the SCI is 1, And when the data to be sent by the UE is sent in a single layer of PSSCH, if formula (10) is satisfied:
  • PSSCH-RSRPreal is the average value of PSSCH-RSRP1000 or PSSCH-RSRP1001 or PSSCH-RSRP1000 and PSSCH-RSRP1001.
  • PSSCH-RSRP1000 and PSSCH-RSRP1001 are the RSRP values measured by the UE according to the two DMRS ports of the PSSCH.
  • ⁇ ij is the SL-RSRP threshold
  • i is the value of the priority P1 carried in the monitored PSCCH
  • j is the value of the priority P2 of the data to be sent by the UE.
  • the average value of UEPSSCH-RSRP1000 or PSSCH-RSRP1001 or PSSCH-RSRP1000 and PSSCH-RSRP1001 is compared with the preset received power threshold for the implementation of various scenarios, please refer to Embodiment 3 and Embodiment Five, I will not repeat them here.
  • the reserved resources are likely to be dual-layer transmission.
  • the UE uses single-layer transmission, if different DMRSs are used The orthogonality between the ports is very good, then the UE will only be affected by a certain layer in the above reserved resources.
  • the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the detected PSCCH with the received power threshold, and the field corresponding to the number of DMRS ports in the sideline control information transmitted in the PSCCH transmitted by the UE
  • the UE compares the RSRP of the PSSCH with the preset received power threshold for resource selection, which can improve the accuracy of resource exclusion.
  • steps in the flowchart of FIG. 8 or FIG. 9 are displayed in sequence as indicated by the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless specifically stated in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in FIG. 8 or FIG. 9 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. These sub-steps or The execution order of the stages is not necessarily carried out sequentially, but may be executed alternately or alternately with other steps or at least a part of other steps or sub-steps or stages.
  • a resource selection device including:
  • the comparison module 11 is configured to compare the RSRP of the channel with a preset received power threshold if the maximum number of DMRS ports corresponding to the PSSCH is at least two; the channel is the PSCCH that the UE hears or the PSCCH that the UE hears is scheduled The maximum number of DMRS ports is the maximum number of DMRS ports of the PSSCH scheduled by the PSCCH that the UE listens to, or the maximum number of DMRS ports of the PSSCH transmitted in the resource pool used by the UE;
  • the determining module 12 is configured to determine whether to exclude resources in the resource selection window of the UE according to the comparison result.
  • the maximum number of demodulation reference signal DMRS ports corresponding to the physical side row shared channel PSSCH is at least two, including:
  • the resource pool used by the UE is configured to compare the RSRP of the PSSCH scheduled by the detected PSCCH with the received power threshold, and the field corresponding to the number of DMRS ports in the side link control information SCI transmitted in the PSCCH detected by the UE Is the default value.
  • the maximum number of demodulation reference signal DMRS ports corresponding to the physical side row shared channel PSSCH is at least two, including:
  • the maximum number of DMRS ports of the PSSCH transmitted in the resource pool used by the UE is N, and N is greater than 1.
  • a resource selection device is also provided.
  • the structure of the device is the same as that of FIG. 10, but the functions of each module are different.
  • the device includes:
  • the comparison module 11 is configured to compare the RSRP of the PSSCH scheduled with the PSCCH monitored by the UE with the preset received power threshold if the resource pool used by the UE is configured to compare the SCI transmitted in the PSCCH monitored by the UE
  • the field corresponding to the number of DMRS ports is a preset value, and the UE compares the RSRP of the channel with the preset received power threshold;
  • the determining module 12 is configured to determine whether to exclude the resources in the resource selection window of the UE according to the comparison result.
  • the comparison module 11 is used to compare the RSRP of the detected PSCCH with the received power threshold.
  • the determining module 12 is configured to exclude the resources in the resource selection window of the UE if the comparison result is that the RSRP of the detected PSCCH is greater than the received power threshold.
  • the comparison module 11 is used to compare the RSRP of the PSSCH with the received power threshold; the PSSCH is the PSSCH scheduled by the PSCCH monitored by the UE.
  • the determining module 12 is configured to exclude resources in the resource selection window of the UE if the comparison result is that the RSRP of the PSSCH is greater than the received power threshold.
  • the comparison module 11 is configured to lower the received power threshold according to the preset adjustment value to obtain the reduced received power threshold; compare the RSRP of the PSSCH with the reduced received power threshold.
  • the comparison module 11 is configured to increase the RSRP of the PSSCH according to the preset adjustment value to obtain the RSRP of the PSSCH after the increase; and compare the RSRP of the PSSCH after the increase with the received power threshold.
  • the comparison module 11 is configured to compare the average value of the RSRP of each DMRS port of the PSSCH with the received power threshold; the PSSCH is the PSSCH scheduled by the PSCCH monitored by the UE.
  • the determining module 12 is configured to exclude the resources in the resource selection window of the UE if the comparison result is that the average value of the RSRP of each DMRS port of the PSSCH is greater than the received power threshold.
  • the comparison module 11 is configured to lower the received power threshold according to the preset adjustment value to obtain the lowered received power threshold; compare the average RSRP of each DMRS port of the PSSCH with the reduced received power The threshold is compared.
  • the comparison module 11 is configured to increase the average value according to the preset adjustment value to obtain the average value after the increase; the UE compares the average value after the increase with the received power threshold.
  • the comparison module 11 is used to compare the RSRP sum of each DMRS port of the PSSCH with the received power threshold; the PSSCH is the PSSCH scheduled by the PSCCH that the UE listens to.
  • the determining module 12 is configured to exclude the resources in the resource selection window of the UE if the comparison result is that the sum of the RSRP of each DMRS port of the PSSCH is greater than the received power threshold.
  • the comparison module 11 is used to compare the RSRP of at least one DMRS port of the PSSCH with the received power threshold; the PSSCH is the PSSCH scheduled by the PSCCH monitored by the UE.
  • the comparison module 11 is used to compare the RSRP of any DMRS port of the PSSCH with the received power threshold.
  • the determining module 12 is configured to exclude resources in the resource selection window of the UE if the comparison result is that the RSRP of any DMRS port is greater than the received power threshold.
  • the comparison module 11 is used to compare the RSRP of each DMRS port of the PSSCH with the received power threshold.
  • the determining module 12 is configured to exclude resources in the resource selection window of the UE if the comparison result is that the RSRP of at least one DMRS port of the PSSCH is greater than the received power threshold.
  • the comparison module 11 is configured to lower the received power threshold according to the preset adjustment value to obtain the reduced received power threshold; and compare the RSRP of at least one DMRS port of the PSSCH with the reduced received power threshold Compare.
  • the comparison module 11 is configured to increase the RSRP of at least one DMRS port according to the preset adjustment value to obtain the RSRP of the at least one DMRS port after the increase; and adjust the RSRP and the received power of the at least one DMRS port The threshold is compared.
  • the maximum number of DMRS ports corresponding to the PSSCH is at least two, including: the resource pool used by the UE is configured to use the RSRP of the PSSCH scheduled by the detected PSCCH to compare with the received power threshold, and the UE detects
  • the field corresponding to the number of DMRS ports in the sideline control information transmitted in the heard PSCCH is a preset value, and the data to be sent by the UE is sent in a single layer of the PSSCH.
  • the comparison module 11 is configured to compare the RSRP of the PSSCH scheduled by the PSCCH and the received power threshold if the resource pool used by the UE is The field corresponding to the number of DMRS ports in the side row control information is a preset value, and the data to be sent by the UE is sent using a single layer of PSSCH, and the RSRP of the channel is compared with the preset received power threshold.
  • the comparison module 11 is used to compare the RSRP of the PSSCH with the received power threshold; the PSSCH is the PSSCH scheduled by the PSCCH monitored by the UE.
  • the determining module 12 is configured to exclude resources in the resource selection window of the UE if the comparison result is that the RSRP of the PSSCH is greater than the received power threshold.
  • the comparison module 11 is configured to compare the RSRP of at least one DMRS port of the PSSCH with the received power threshold.
  • the comparison module 11 is used to compare the average value of the RSRP of each DMRS port of the PSSCH with the received power threshold.
  • the determining module 12 is configured to exclude the target resource in the resource selection window, and the target resource is the resource reserved by the SCI in the PSCCH detected by the UE.
  • Each module in the above-mentioned resource selection device can be implemented in whole or in part by software, hardware, and a combination thereof.
  • the above-mentioned modules may be embedded in the form of hardware or independent of the processor in the computer equipment, or may be stored in the memory of the computer equipment in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned modules.
  • FIG. 11 is a schematic diagram of the internal structure of an electronic device in an embodiment.
  • the electronic device includes a processor and a memory connected through a system bus.
  • the processor is used to provide computing and control capabilities to support the operation of the entire electronic device.
  • the memory may include a non-volatile storage medium and internal memory.
  • the non-volatile storage medium stores an operating system and a computer program.
  • the computer program can be executed by a processor to implement a resource selection method provided in the following embodiments.
  • the internal memory provides a cached operating environment for the operating system computer program in the non-volatile storage medium.
  • the electronic device can be any terminal device such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a vehicle-mounted computer, and a wearable device.
  • FIG. 11 is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied.
  • the specific computer device may Including more or fewer parts than shown in the figure, or combining some parts, or having a different arrangement of parts.
  • an electronic device including: a processor, a memory, and a transceiver.
  • the processor, the memory, and the transceiver communicate with each other through an internal connection path, and the memory is used to store program codes;
  • the processor is configured to call the program code stored in the memory to cooperate with the transceiver to implement the steps of any one of the foregoing method embodiments.
  • a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the above method embodiments are implemented.
  • Non-volatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory.
  • Volatile memory may include random access memory (RAM) or external cache memory.
  • RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Channel (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

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Abstract

本申请涉及一种资源选择方法、装置、电子设备和存储介质，若PSSCH对应的最大DMRS端口数为至少两个，则UE将信道的RSRP与预设的接收功率阈值进行比较，并根据比较结果确定是否对UE的资源选择窗内的资源进行排除，确定了当PSSCH为双层传输时，根据两个或两个以上DMRS端口测得的RSRP值与SL-RSRP比较的实现方式，当PSSCH为双层传输时，也可以采用将DMRS端口测得的RSRP值与SL-RSRP比较来进行资源选择，使得资源选择的方式可以应用在多种场景中。

Description

资源选择方法、装置、电子设备和存储介质 技术领域
本申请涉及NR-V2X通信领域，特别是涉及一种资源选择方法、装置、电子设备和存储介质。
背景技术
设备到设备(Device to Device，D2D)是一种侧行链路(Sidelink，SL)传输技术，与传统的蜂窝***中通过基站接收或者发送通信数据的方式不同。关于D2D技术，第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)定义了两种传输模式：模式A和模式B。模式A：终端的传输资源是由基站分配的，终端根据基站分配的资源在侧行链路上进行数据的发送；基站可以为终端分配单次传输的资源，也可以为终端分配半静态传输的资源。模式B：车载终端在资源池中选取一个传输资源进行数据的传输。例如，终端可以通过侦听的方式在资源池中选取传输资源，或者通过随机选取的方式在资源池中选取传输资源。
在新空口(NewRadio，NR)-车辆到其他设备(Vehicle to Everything，V2X)中，也会存在车辆到车辆(Vehicle to Vehicle，V2V)这种终端到终端的通信模式，而且，NR-V2X需要支持自动驾驶，因此对车辆之间数据交互提出了更高的要求，如更高的吞吐量、更低的时延、更高的可靠性、更大的覆盖范围、更灵活的资源分配等。NR-V2X的物理层结构如图1所示，可以看到用于传输侧行控制信息的物理侧行控制信道(Physical Sidelink Control Channel，PSCCH)是包含在用于传输数据的物理侧行共享信道(Physical Sidelink Shared Channel，PSSCH)中的，这也意味着PSCCH与PSSCH必须同时发送。目前，标准中只支持当前数据传输块(Transport Block，TB)的初传资源预留当前TB的重传资源，当前TB的重传资源预留当前TB的重传资源，以及上一个TB的初传资源或重传资源预留当前TB的初传资源或重传资源。如图2所示，TB 2的初传资源预留TB 2的重传资源1和重传资源2，TB 2的重传资源1预留TB 2的重传资源2。与此同时，TB 1的初传资源预留TB 2的初传资源，TB 1的重传资源1预留TB 2的重传资源1，TB 1的重传资源2预留TB 2的重传资源2。上述三种TB间的资源预留间隔相同，因此，当UE侦听到TB 1的初传资源上的PSCCH时，就可以判断出TB 1的重传1资源与重传2资源，以及TB 2的初传资源的时频资源位置。并且由于TB间的资源预留间隔相同，UE还可以计算出TB 2的重传资源1以及重传资源2的时频资源位置。
因此，当UE工作在上述模式B下，UE可以通过侦听其他UE发送的PSCCH，获取其他UE发送的侧行控制信息，从而得知其他UE所预留的资源。UE在进行资源选择时，会排除其他UE预留的资源，从而避免资源碰撞。那么，UE在进行资源选择时，是否需要排除其他UE预留的资源也有相应的触发机制。
在NR-V2X中，PSCCH的传输只支持单层传输(单DMRS端口)，PSSCH的传输支持最大两层的传输(单DMRS端口或两个DMRS端口)。目前，在NR-V2X标准中描述了PSSCH为单层传输的触发机制。
发明内容
基于此，有必要提供一种资源选择方法、装置、电子设备和存储介质。
第一方面，本发明的实施例提供一种资源选择方法，所述方法包括：
若PSSCH对应的最大DMRS端口数为至少两个，则用户设备UE将信道的RSRP与预设的接收功率阈值进行比较；所述信道为所述UE侦听到的PSCCH或所述UE侦听到的PSCCH调度的PSSCH，所述最大DMRS端口数为所述UE侦听到的PSCCH调度的PSSCH的最大DMRS端口数，或，所述UE所用资源池中传输的PSSCH的最大DMRS端口数；
根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除。
第二方面，本发明的实施例提供一种资源选择方法，所述方法包括：
若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，所述UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则所述UE将信道的RSRP与预设的接收功率阈值进行比较；所述信道为所述UE侦听到的PSCCH或所述UE侦听到的PSCCH调度的PSSCH；
根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除。
第三方面，本发明的实施例提供一种资源选择装置，包括：
比较模块，用于若PSSCH对应的最大DMRS端口数为至少两个，则将信道的RSRP与预设的接收功率阈值进行比较；所述信道为所述UE侦听到的PSCCH或所述UE侦听到的PSCCH调度的PSSCH，所述最大DMRS端口数为所述UE侦听到的PSCCH调度的PSSCH的最大DMRS端口数，或，所述UE所用资源池中传输的PSSCH的最大DMRS端口数；
确定模块，用于根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除。
第四方面，本发明的实施例提供一种资源选择装置，包括：
比较模块，用于若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，所述UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则所述UE将信道的RSRP与预设的接收功率阈值进行比较；
确定模块，用于根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除。
第三方面，本发明的实施例提供一种电子设备，包括：处理器、存储器和收发器，所述处理器、所述存储器和所述收发器通过内部连接通路互相通信，所述存储器，用于存储程序代码；
所述处理器，用于调用所述存储器中存储的程序代码，以配合所述收发器实现第一方面任一项所述方法的步骤。
第四方面，本发明的实施例提供一种电子设备，包括：处理器、存储器和收发器，所述处理器、所述存储器和所述收发器通过内部连接通路互相通信，所述存储器，用于存储程序代码；
所述处理器，用于调用所述存储器中存储的程序代码，以配合所述收发器实现第二方面任一项所述方法的步骤。
第五方面，本发明的实施例提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现第一方面任一项所述的方法的步骤。
第六方面，本发明的实施例一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现第二方面任一项所述的方法的步骤。
本申请实施例提供的资源选择方法、装置、电子设备和存储介质，若PSSCH对应的最大DMRS端口数为至少两个，则UE将信道的RSRP与预设的接收功率阈值进行比较，并根据比较结果确定是否对UE的资源选择窗内的资源进行排除，由于PSSCH对应的最大DMRS端口数为UE侦听到的PSCCH调度的PSSCH的最大DMRS端口数，或，UE所用资源池中传输的PSSCH的最大DMRS端口数，因此，当PSSCH对应的最大DMRS端口数为2个或2个以上时，也即，当PSSCH为双层传输时，可以将侦听到的PSCCH的RSRP或该PSCCH的调度的PSSCH的RSRP与预设的接收功率阈值进行比较，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，从而确定了当PSSCH为双层传输时，根据两个或两个以上DMRS端口测得的RSRP值与SL-RSRP比较的实现方式，当PSSCH为双层传输时，也可以采用将DMRS端口测得的RSRP值与SL-RSRP比较来进行资源选择，使得资源选择的方式可以应用在多种场景中。
附图说明
图1为一个实施例提供的NR-V2X的物理层结构示意图；
图2为一个实施例提供的TB的初传或重传示意图；
图3为一个实施例提供的资源选择示意图；
图4为一个实施例提供的资源重选示意图；
图5为PSSCH采用双层传输的示意图；
图6和图7分别为本申请实施例提供的信息配置方法的场景示意图；
图8为一个实施例提供的一种资源选择方法的流程图；
图9另一个实施例提供的一种资源选择方法的流程图；
图10为一个实施例提供的一种资源选择装置的框图；
图11为一个实施例中电子设备的内部结构示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
在NR-V2X，也会存在V2V这种终端到终端的通信模式，当UE工作在上述模式B下，UE可以通过侦听其他UE发送的PSCCH，获取其他UE发送的侧行链路控制信息(Sidelink Control Information，SCI)，从而得知其他UE所预留的资源。UE在进行资源选择时，会排除其他UE预留的资源，从而避免资源碰撞。
如图3所示，UE在n时刻产生数据包，需要进行资源选择，将资源选择窗内所有的资源作为集合A。资源选择窗从n+T1开始，到n+T2结束。T1>＝终端准备发送数据以及进行资源选择的时间，T2min<＝T2<＝业务的时延要求范围，T2min的取值为{1，5，10，20}*2 μ个时隙，其中μ＝0，1，2，3对应于子载波间隔是15，30，60，120kHz的情况。UE在n-T0到n-Tproc,0时刻进行资源侦听，T0的取值为100或1100毫秒，Tproc,0为终端解码控制信息所需的时间。
如果终端在侦听窗内某些时隙发送数据，没有进行侦听，则需要将这些发送数据的时隙在资源选择窗内对应的时隙上的全部资源排除掉，例如，终端在时隙tm没有进行资源侦听，终端所用资源池的配置中包括(预)配置的资源预留周期集合T＝{100,200,300,400,500,600,700,800}ms，则终端将计算tm+100，tm+200，tm+300，tm+400，tm+500，tm+600，tm+700，tm+800这些时隙是否在资源选择窗内，假设tm+100，tm+200，tm+300，tm+400，tm+500这些时隙在资源选择窗内，则终端从资源集合A中排除 tm+100，tm+200，tm+300，tm+400，tm+500这些时隙上全部的资源。注意，此处资源预留周期集合T中的取值包括图2中TB 1与TB 2之间资源预留间隔可能的取值，即图2中TB 1与TB 2之间资源预留间隔为集合T中的一种。
通过上述方法将没有进行资源侦听的时隙在资源选择窗内对应的时隙上的全部资源排除掉之后，终端可以根据侦听到的PSCCH中传输的SCI中的资源预留信息，将SCI预留的属于资源选择窗内资源从集合A中排除，方法如下：
Step 1：如果终端在侦听资源窗内侦听到PSCCH，测量该PSCCH的RSRP或者该PSCCH调度的PSSCH的RSRP(即与该PSCCH同时发送的PSSCH的RSRP)，如果测量PSCCH的RSRP或PSSCH的RSRP大于SL-RSRP阈值，并且根据该PSCCH中传输的SCI中的资源预留信息确定其预留的资源在资源选择窗内，则从集合A中排除对应资源。如果经过上述两次资源排除之后，资源集合A中剩余资源不足最初始的资源集合A的全部资源的X％，则将SL-RSRP阈值抬升3dB，重新进行step 1。
Step 2：进行资源排除后，终端从集合A的剩余资源中随机选择若干资源，作为其初次传输以及重传的发送资源。
其中，上述SL-RSRP阈值是由终端侦听到的PSCCH中携带的优先级P1和终端待发送数据的优先级P2决定的。终端通过网络配置或者预配置获取一张SL-RSRP阈值表，该SL-RSRP阈值表包含了所有优先级组合对应的SL-RSRP阈值。例如，如表1所示，假设P1与P2的优先级等级可选值均为0-7，则不同优先级组合对应的SL-RSRP阈值用γij表示，其中，γij中的i为优先级等级P1的取值，j为优先级等级P2的取值。
表1
Figure PCTCN2020080682-appb-000001
当终端侦听到其他UE发送的PSCCH，获取该PSCCH中传输的SCI中携带的优先级P1以及待发送数据的优先级P2，终端通过查表1的方式确定SL-RSRP阈值。
并且，终端利用测量到的PSCCH-RSRP还是该PSCCH调度的PSSCH-RSRP与SL-RSRP阈值进行比较取决于终端所用资源池的资源池配置。资源池的配置可以是网络配置或者预配置的。
此外，在NR-V2X中还支持在进行资源选择之后以及发送初传之前，对于已选资源进行重新评估(re-evaluation)。
如图4所示，终端在n时刻产生数据，确定资源侦听窗与资源选择窗进行资源选择，并且，终端选择了n+a时刻的初传资源x，以及n+b和n+c时刻的重传资源y和z。在n时刻后，终端仍然会持续侦听PSCCH。并且终端至少在n+a-T3时刻进行一次上述Step 1的资源排除过程，T3是终端进行资源选择需要的时间。如果在资源排除后，资源x、y、z没有被排除掉，则无需进行资源重选，如果在资源排除后，资源x、y、z的部分或者全部被排除掉，终端针对被排除掉的资源进行资源重选，或针对全部已选资源x、y、z进行资源重选。
在NR-V2X中，资源抢占同样被支持。在图4中，终端在n时刻选择了资源x、y和z。当终端在n+a时刻发送初传并预留了资源y和z后，依旧会持续侦听PSCCH，如果终端发现有高优先级的其他终端抢占了资源y或z，并且测量的PSCCH-RSRP或PSSCH-RSRP大于SL-RSRP阈值，则终端针对被抢占的资源进行资源重选。此处SL-RSRP阈值也是由终端侦听到的PSCCH中的优先级P1和终端待发送数据的优先级P2确定的。
注意，上述终端在n时刻进行资源选择，在re-evaluation过程中的资源选择以及针对被抢占的资源进行资源选择，这三种情况下的SL-RSRP阈值可以相同也可以不同。
在NR-V2X中，PSCCH的传输只支持单层传输(单DMRS端口)，PSSCH的传输支持最大两层的传输(单DMRS端口或两个DMRS端口)。在PSCCH中传输的SCI中包含DMRS端口数对应的域，示例性地，当该域的值为0时，表示该PSCCH调度的PSSCH是单层传输，当该域的值为1时，表示该PSCCH调度的PSSCH是双层传输。
例如图5所示，为PSSCH采用双层传输的示意图。频域上一个最小的单元为一个子载波，时域上 一个最小的单元代表一个符号，一个子载波和一个时域符号确定一个资源单元(resource element，RE)。当PSSCH采用双层传输时，DMRS端口1000与DMRS端口1001属于一个码分多路复用(code division multiplexing，CDM)组，二者用正交码区分。两层的所有DATARE都可以用来映射数据，因此，双层传输可以增加PSSCH传输的吞吐量。同时，对于两个DMRS端口，终端以等功率发射。
由上文可知，当UE在n时刻进行资源选择、在re-evaluation过程中进行Step 1以及针对被抢占的资源进行资源重选，都涉及测量侦听到的PSCCH的RSRP或该PSCCH调度的PSSCH的RSRP，并与SL-RSRP阈值进行比较，SL-RSRP阈值根据侦听到的PSCCH中携带的优先级P1与UE待发送数据的优先级P2通过查表确定。
当UE所用资源池被配置或预配置为，采用PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较时，如果满足：
PSSCH-RSRP>γij     (1)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式1中PSSCH-RSRP是UE侦听到的PSCCH调度的PSSCH的RSRP。γij为SL-RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。
上述现有机制的描述都是默认PSSCH单层传输的情况。当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，即该PSCCH调度的PSSCH采用双层传输，UE会根据两个DMRS端口分别测得两个对应的RSRP值，PSSCH-RSRP1000与PSSCH-RSRP1001。同时，两个DMRS端口的发送功率均为总发送功率的一半，所以PSSCH-RSRP1000与PSSCH-RSRP1001也几乎是采用单层传输时PSSCH-RSRP的一半。目前，在NR-V2X标准化进程中，并未讨论PSSCH-RSRP1000、PSSCH-RSRP1001如何运用到公式(1)中，即没有讨论当PSSCH为双层传输时，如何根据两个DMRS端口测得的RSRP值与SL-RSRP比较从而进行资源排除。
本申请实施例提供的资源选择方法，可以解决“在NR-V2X标准化进程中，并未讨论当PSSCH为双层传输时，如何根据两个DMRS端口测得的RSRP值与SL-RSRP比较从而进行资源排除”这一技术问题，需要说明的是，本申请的信息上报处理方法并不仅限于解决上述技术问题，还可以用以解决其它的技术问题，本申请并不以此为限。
图6和图7分别为本申请实施例提供的信息配置方法的场景示意图。如图6所示，该场景中包括网络设备1、UE2和UE3，在该场景中，采用模式A进行资源调度，也即，UE2和UE3的数据传输资源由网络设备1统一调度。如图7所示，该场景中包括UE4和UE5，在该场景中，采用模式B进行资源调度，也即，UE4和UE5的数据传输资源由UE从资源池中获取，可选地，图7场景中也可以包括网络设备6，但该网络设备6不会参与UE4和UE5的资源调度。其中，该网络设备1、网络设备6可以为基站、核心网设备等，还可以是用独立的基站或者是多个基站组成的基站集群来实现。UE可以但不限于是各种个人计算机、笔记本电脑、智能手机、平板电脑和便携式可穿戴设备。
图8为一个实施例提供的一种资源选择方法的流程图，该方法涉及的是当PSSCH对应的最大解调参考信号(Demodulation Reference Signal，DMRS)端口数为至少两个时，用户设备UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，以确定是否对UE的资源选择窗内的资源进行排除的具体实现方式，该方法的执行主体为图6或图7中的任一UE。如图8所示，该方法可以包括以下步骤：
S101、若PSSCH对应的最大DMRS端口数为至少两个，则UE将信道的RSRP与预设的接收功率阈值进行比较。
其中，信道为UE侦听到的PSCCH或UE侦听到的PSCCH调度的PSSCH，最大DMRS端口数为UE侦听到的PSCCH调度的PSSCH的最大DMRS端口数，或，UE所用资源池中传输的PSSCH的最大DMRS端口数。
在本实施例中，PSSCH对应的最大DMRS端口数可以为UE可能侦听到的PSCCH中传输的SCI中指示的DMRS端口数的最大值，例如，当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，指示UE所用的资源池中传输的PSSCH对应的最大DMRS端口数为2。或者，PSSCH对应的最大DMRS端口数也为UE所用的资源池中传输的PSSCH的最大DMRS端口数，还可以通过其它的方式确定PSSCH对应的最大DMRS端口数，本申请实施例中不以此为限。
在本实施例中，当UE确定PSSCH对应的最大DMRS端口数为至少两个时，将信道的RSRP与预设的接收功率阈值进行比较，UE可以将侦听到的PSCCH的RSRP与预设的接收功率阈值进行比较，也可以将侦听到的PSCCH的调度的PSSCH的RSRP与预设的接收功率阈值进行比较。该接收功率阈值可以根据上述表1得到，例如，UE根据侦听到的PSCCH中携带的优先级P1和终端待发送数据的优先级P2查询表1得到接收功率阈值。
示例性地，PSCCH的调度的PSSCH的RSRP可以是PSSCH的各个DMRS端口的RSRP，也可以是PSSCH的各个DMRS端口的RSRP平均值，或者，也可以是PSSCH的各个DMRS端口的RSRP之和，等等，对应的，UE可以将PSSCH的各个DMRS端口的RSRP与接收功率阈值进行比较，也可以 将PSSCH的各个DMRS端口的RSRP平均值与接收功率阈值进行比较，还可以是将PSSCH的各个DMRS端口的RSRP之和与接收功率阈值进行比较，等等，本申请实施例中不以此为限。
需要说明的是，UE利用侦听到的PSCCH的RSRP还是该PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，取决于UE所用资源池的资源池配置，该资源池的配置可以是网络配置或者预配置的。
S102、UE根据比较结果确定是否对UE的资源选择窗内的资源进行排除。
其中，该比较结果表示信道的RSRP与预设的接收功率阈值之间的大小关系。
在本实施例中，UE根据该比较结果来确定是否需要对UE的资源选择窗内的资源进行排除。通常，当信道的RSRP大于预设的接收功率阈值时，UE对UE的资源选择窗内的资源进行排除，例如，当UE侦听到的PSCCH的RSRP大于预设的接收功率阈值，或者，当UE侦听到的PSCCH的调度的PSSCH的RSRP大于预设的接收功率阈值时，对UE的资源选择窗内的资源进行排除。
在本实施例中，UE在时刻n进行资源选择，n时刻为数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选的时刻。UE确定资源侦听窗[n-T0,n-Tproc,0]以及资源选择窗[n+T1,n+T2]，并在资源侦听窗内进行侦听，当根据侦听结果确定PSSCH对应的最大DMRS端口数为2个或2个以上，又或者，UE所用资源池中传输的PSSCH的最大DMRS端口数为2个或2个以上，则UE可以将侦听到的PSCCH的RSRP或该PSCCH的调度的PSSCH的RSRP与预设的接收功率阈值进行比较，当侦听到的PSCCH的RSRP或该PSCCH的调度的PSSCH的RSRP大于预设的接收功率阈值时，对UE的资源选择窗[n+T1,n+T2]内的资源进行排除。
可选地，对UE的资源选择窗内的资源进行排除，包括：对资源选择窗内的目标资源进行排除，目标资源为UE侦听到的PSCCH中的SCI预留的资源。
在本实施例中，UE需要排除的资源为UE侦听到的PSCCH中的SCI预留的资源，也即，UE要从自己的资源选择窗中排除被其它UE预留的资源，避免与其他UE共用资源，导致相互间的干扰增加的情况。
本申请实施例提供的资源选择方法，若PSSCH对应的最大DMRS端口数为至少两个，则UE将信道的RSRP与预设的接收功率阈值进行比较，并根据比较结果确定是否对UE的资源选择窗内的资源进行排除，由于PSSCH对应的最大DMRS端口数为UE侦听到的PSCCH调度的PSSCH的最大DMRS端口数，或，UE所用资源池中传输的PSSCH的最大DMRS端口数，因此，当PSSCH对应的最大DMRS端口数为2个或2个以上时，也即，当PSSCH至少为双层传输时，可以将侦听到的PSCCH的RSRP或该PSCCH的调度的PSSCH的RSRP与预设的接收功率阈值进行比较，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，从而确定了当PSSCH至少为双层传输时，根据两个或两个以上DMRS端口测得的RSRP值与SL-RSRP比较的实现方式，当PSSCH至少为双层传输时，也可以采用将DMRS端口测得的RSRP值与SL-RSRP比较来进行资源选择，使得资源选择的方式可以应用在多种场景中。
在图8所示实施例中，可以有多种方式确定PSSCH对应的最大DMRS端口数为至少两个，在其中一个实施例中，PSSCH对应的最大DMRS端口数为至少两个，包括：UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值。在本实施例中，当UE的数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源需要进行资源重选时，UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，UE将信道的RSRP与预设的接收功率阈值进行比较已进行资源排除。其中，当SCI中DMRS端口数对应的域为预设值时，表示该PSCCH中传输的SCI中DMRS端口数为2或者大于2，也即PSSCH至少采用双层传输，该预设值可以为1，也可以为true等，本领域技术人员可以根据实际需要来设置，本实施例中不加以限制。
在另一个实施例中，PSSCH对应的最大DMRS端口数为至少两个，包括：UE所用资源池中传输的PSSCH的最大DMRS端口数为N，N大于1。当UE的数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源需要进行资源重选时，当UE所用资源池中传输的PSSCH的最大DMRS端口数为N，UE将信道的RSRP与预设的接收功率阈值进行比较以进行资源排除。由于N大于2，那么N可以为2或者大于2，也即PSSCH至少采用双层传输时，UE可以将侦听到的PSCCH的RSRP或者该PSCCH调度的PSSCH的RSRP与预设的RSRP阈值比较，以对UE的资源选择窗内的资源进行排除。
上述两种实施例中，给出了PSSCH的最大DMRS端口数为至少两个的两种可能性，使得不论是在哪种场景下，当PSSCH至少采用双层传输时，UE都可以将信道的RSRP与预设的接收功率阈值进行比较以进行资源排除，提高了资源选择的普适性。
实施例一
在上述两种实施例的基础上，UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较， 包括：UE将侦听到PSCCH的RSRP与接收功率阈值进行比较。
进一步地，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，包括：若比较结果为侦听到的PSCCH的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在本实施例中，当UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，或者当UE所用资源池中传输的PSSCH的最大DMRS端口数为N(N>1)时，UE采用PSCCH-RSRP与SL-RSRP阈值进行比较进行资源排除。
例如，UE在时刻n进行资源选择，n时刻为数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选的时刻。UE确定资源侦听窗[n-T0,n-Tproc,0]以及资源选择窗[n+T1,n+T2]，并根据资源侦听窗内的侦听结果，对资源选择窗内的资源进行排除。当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时；或者，当UE所用资源池中传输的PSSCH的最大DMRS端口数为N，N>1)如果满足公式(2)：
PSCCH-RSRP>γij      (2)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式2中PSCCH-RSRP是UE侦听到的PSCCH的RSRP。γij为预设的RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。
本申请实施例提供的资源选择方法，当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时；或者，当UE所用资源池中传输的PSSCH的最大DMRS端口数为至少两个时，UE将侦听到PSCCH的RSRP与接收功率阈值进行比较从而进行资源排除，UE测量侦听到PSCCH的RSRP与接收功率阈值进行比较即可，不需要测量PSSCH的每个DMRS端口的RSRP，可以达到快速进行资源选择的目的，并减少UE的功耗。并且，由于PSCCH总是采用单层传输，有利于各个UE在利用PSCCH-RSRP与RSRP阈值进行比较时，UE行为的统一性。
图9另一个实施例提供的一种资源选择方法的流程图，该方法涉及的是当UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，UE将侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，UE将信道的RSRP与预设的接收功率阈值进行比较以进行资源选择的具体实现方式，该方法的执行主体为图6或图7中的任一UE。如图9所示，该方法可以包括以下步骤：
S201、若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则UE将信道的RSRP与预设的接收功率阈值进行比较。
其中，信道为UE侦听到的PSCCH或UE侦听到的PSCCH调度的PSSCH。上述预设值可以为1，也可以为true等，当SCI中DMRS端口数对应的域为预设值时，表示该PSCCH中传输的SCI中DMRS端口数为2或者大于2，也即PSSCH至少采用双层传输，对于预设值本领域技术人员可以根据实际需要来设置，本实施例中不加以限制。
在本实施例中，当UE在数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选时，若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，UE将侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则UE将信道的RSRP与预设的接收功率阈值进行比较。
UE可以将侦听到的PSCCH的RSRP与预设的接收功率阈值进行比较，也可以将侦听到的PSCCH的调度的PSSCH的RSRP与预设的接收功率阈值进行比较。该接收功率阈值可以根据上述表1得到，例如，UE根据侦听到的PSCCH中携带的优先级P1和终端待发送数据的优先级P2查询表1得到接收功率阈值。
示例性地，PSCCH的调度的PSSCH的RSRP可以是PSSCH的各个DMRS端口的RSRP，也可以是PSSCH的各个DMRS端口的RSRP平均值，或者，也可以是PSSCH的各个DMRS端口的RSRP之和，等等，对应的，UE可以将PSSCH的各个DMRS端口的RSRP与接收功率阈值进行比较，也可以将PSSCH的各个DMRS端口的RSRP平均值与接收功率阈值进行比较，还可以是将PSSCH的各个DMRS端口的RSRP之和与接收功率阈值进行比较，等等，本申请实施例中不以此为限。
需要说明的是，UE利用侦听到的PSCCH的RSRP还是该PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，取决于UE所用资源池的资源池配置，该资源池的配置可以是网络配置或者预配置的。
S202、根据比较结果确定是否对UE的资源选择窗内的资源进行排除。
在本实施例中，UE根据该比较结果来确定是否需要对UE的资源选择窗内的资源进行排除。通常， 当信道的RSRP大于预设的接收功率阈值时，UE对UE的资源选择窗内的资源进行排除，例如，当UE侦听到的PSCCH的RSRP大于预设的接收功率阈值，或者，当UE侦听到的PSCCH的调度的PSSCH的RSRP大于预设的接收功率阈值时，对UE的资源选择窗内的资源进行排除。
在本实施例中，UE在时刻n进行资源选择，n时刻为数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选的时刻。UE确定资源侦听窗[n-T0,n-Tproc,0]以及资源选择窗[n+T1,n+T2]，当UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，并且，UE将侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则UE可以将侦听到的PSCCH的RSRP或该PSCCH的调度的PSSCH的RSRP与预设的接收功率阈值进行比较，当侦听到的PSCCH的RSRP或该PSCCH的调度的PSSCH的RSRP大于预设的接收功率阈值时，对UE的资源选择窗[n+T1,n+T2]内的资源进行排除。
本申请实施例提供的资源选择方法，若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，UE将侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则UE将信道的RSRP与预设的接收功率阈值进行比较，并根据比较结果确定是否对UE的资源选择窗内的资源进行排除，由于UE当侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值时，表示PSSCH至少为双层传输，可以将侦听到的PSCCH的RSRP或该PSCCH的调度的PSSCH的RSRP与预设的接收功率阈值进行比较，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，从而确定了当PSSCH至少为双层传输时，根据两个或两个以上DMRS端口测得的RSRP值与SL-RSRP比较的实现方式。
在图9所示实施例中，UE既可以将侦听到的PSCCH的RSRP与预设的接收功率阈值进行比较，也可以将侦听到的PSCCH的调度的PSSCH的RSRP与预设的接收功率阈值进行比较，在上述实施例一中已经详细介绍了UE将侦听到的PSCCH的RSRP与预设的接收功率阈值进行比较的实现方式，下面重点介绍UE将侦听到的PSCCH的调度的PSSCH的RSRP与预设的接收功率阈值进行比较的实现方式。
实施例二
在本实施例中，UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：UE将PSSCH的RSRP与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
进一步地，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，包括：若比较结果为PSSCH的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在本实施例中，当UE所用资源池被配置为，采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，UE将SL-RSRP阈值下调M dB或者UE将测量的PSSCH-RSRP值提高M dB，M为网络配置或预配置或根据资源池配置信息确定或基于UE自行选择。
例如，UE在时刻n进行资源选择，n时刻为数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选的时刻。UE确定资源侦听窗[n-T0,n-Tproc,0)以及资源选择窗[n+T1,n+T2]，并根据资源侦听窗内的侦听结果，对资源选择窗内的资源进行排除。当UE所用资源池被配置为，采用侦听到的PSCCH调度的PSSCH的RSRP与RSRP阈值进行比较，且UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，UE将侦听到的PSCCH调度的PSSCH的RSRP与RSRP阈值进行比较以进行资源选择。
在一些场景中，当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为0，说明UE侦听到的PSCCH调度的PSSCH为单层传输，UE测量到的PSSCH-RSRP相对于发送该PSSCH的UE的总发送功率，UE将PSSCH的RSRP与一个RSRP阈值比较。当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1，说明该PSCCH调度的PSSCH为双层传输，因为PSSCH双层传输时两个DMRS端口发送功率都是发送该PSSCH的UE总发送功率的一半，如果UE对两个DMRS端口测量得到的RSRP值取平均，则UE测量到的PSSCH的RSRP就几乎是单层传输时的PSSCH的RSRP的一半，为了维持比较不等式的公平性，需要对PSSCH的RSRP进行上调或者对RSRP阈值进行下调，以维持UE行为的公平性与统一性
在其中一个实施例中，UE将PSSCH的RSRP与接收功率阈值进行比较，包括：UE根据预设的调整值对接收功率阈值下调，得到下调后的接收功率阈值；UE将PSSCH的RSRP与下调后的接收功率阈值进行比较。
在本实施例中，当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，如果满足公式(3)：
PSSCH-RSRP>γij–M       (3)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式3中PSSCH-RSRP是 UE侦听到的PSCCH调度的PSSCH的RSRP。γij为SL-RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。M为SL-RSRP阈值的下调整值，例如M为3dB，M为网络配置或预配置或根据资源池配置信息确定或基于UE自行选择。
在另一个实施例中，UE将PSSCH的RSRP与接收功率阈值进行比较，包括：UE根据预设的调整值对PSSCH的RSRP进行上调，得到上调后的PSSCH的RSRP；UE将上调后的PSSCH的RSRP与接收功率阈值进行比较。
在本实施例中，当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，如果满足公式(4)：
PSSCH-RSRP+M>γij       (4)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式4中PSSCH-RSRP是UE侦听到的PSCCH调度的PSSCH的RSRP。γij为SL-RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。M为PSSCH-RSRP的上调整值，例如M为3dB，M为网络配置或预配置或根据资源池配置信息确定或基于UE自行选择。
本申请实施例提供的资源选择方法，当UE所用资源池被配置为，采用侦听到的PSCCH调度的PSSCH的RSRP与RSRP阈值进行比较，且UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，UE将侦听到的PSCCH调度的PSSCH的RSRP与RSRP阈值进行比较以进行资源选择，还可以在比较之前对PSSCH的RSRP进行上调或者对RSRP阈值进行下调，保证UE对资源选择窗内的资源进行排除之后，剩余的资源可供UE进行初传和重传，从而保证数据传输的可靠性，还可以保证单层传输与多层传输之间的UE行为的统一性和公平性。
实施例三
本实施例中，UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：UE将PSSCH的各DMRS端口的RSRP的平均值与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
进一步地，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，包括：若比较结果为PSSCH的各DMRS端口的RSRP的平均值大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在本实施例中，当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，UE分别根据PSSCH的两个DMRS端口测量出两个RSRP值，PSSCH-RSRP1000和PSSCH-RSRP1001，UE利用PSSCH-RSRP1000和PSSCH-RSRP1001的平均值与SL-RSRP阈值进行比较。或者，UE利用PSSCH-RSRP1000和PSSCH-RSRP1001的平均值与下调M dB的SL-RSRP阈值进行比较，或者，将PSSCH-RSRP1000和PSSCH-RSRP1001的平均值提高MdB后与SL-RSRP阈值进行比较，M为网络配置或预配置或根据资源池配置信息确定或基于UE自行选择。
在本实施例中，UE在时刻n进行资源选择，n时刻为数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选的时刻。UE确定资源侦听窗[n-T0,n-Tproc,0)以及资源选择窗[n+T1,n+T2]，并根据资源侦听窗内的侦听结果，对资源选择窗内的资源进行排除。当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，UE计算侦听到的PSCCH调度的PSSCH的各DMRS端口的RSRP的平均值，将各DMRS端口的RSRP的平均值与接收功率阈值比较，若各DMRS端口的RSRP的平均值大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在一些场景中，当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为0，说明UE侦听到的PSCCH调度的PSSCH为单层传输，UE测量到的PSSCH-RSRP相对于发送该PSSCH的UE的总发送功率，UE将PSSCH的RSRP与一个RSRP阈值比较。当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1，说明该PSCCH调度的PSSCH为双层传输，因为PSSCH双层传输时两个DMRS端口发送功率都是发送该PSSCH的UE总发送功率的一半，如果UE对两个DMRS端口测量得到的RSRP值取平均，则UE测量到的PSSCH的RSRP就几乎是单层传输时的PSSCH的RSRP的一半，为了维持比较不等式的公平性，需要对PSSCH的RSRP进行上调或者对RSRP阈值进行下调。
在其中一个实施例中，UE将PSSCH的各DMRS端口的RSRP的平均值与接收功率阈值进行比较，包括：UE根据预设调整值对接收功率阈值进行下调，得到下调后的接收功率阈值；UE将PSSCH的各DMRS端口的RSRP的平均值与下调后的接收功率阈值进行比较。
在本实施例中，当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的第一侧行控制信息中DMRS端口数对应的域为1时，如果满足公式(5)：
mean(PSSCH-RSRP1000,PSSCH-RSRP1001)>γij–M    (5)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式5中PSSCH-RSRP1000和PSSCH-RSRP1001是UE分别根据PSSCH的两个DMRS端口测量的RSRP值，mean(PSSCH-RSRP1000,PSSCH-RSRP1001)表示对PSSCH-RSRP1000与PSSCH-RSRP1001求平均，例如，可以是线性平均值，可以是加权平均值等，本申请实施例中不加以限制。γij为SL-RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。M为SL-RSRP阈值的下调整值，例如M为3dB，M为网络配置或预配置或根据资源池配置信息确定或基于UE自行选择。
在另一个实施例中，UE将PSSCH的各DMRS端口的RSRP的平均值与接收功率阈值进行比较，包括：UE根据预设调整值对平均值进行上调，得到上调后的平均值；UE将上调后的平均值与接收功率阈值进行比较。
在本实施例中，当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的第一侧行控制信息中DMRS端口数对应的域为1时，如果满足公式(6)：
mean(PSSCH-RSRP1000,PSSCH-RSRP1001)+M>γij    (6)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式6中PSSCH-RSRP1000和PSSCH-RSRP1001是UE分别根据PSSCH的两个DMRS端口测量的RSRP值，mean(PSSCH-RSRP1000,PSSCH-RSRP1001)表示对PSSCH-RSRP1000与PSSCH-RSRP1001求平均，例如，可以是线性平均值，可以是加权平均值等，本申请实施例中不加以限制。γij为SL-RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。M为mean(PSSCH-RSRP1000,PSSCH-RSRP1001)的上调整值，例如M为3dB，M为网络配置或预配置或根据资源池配置信息确定或基于UE自行选择。
本申请实施例提供的资源选择方法，当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的第一侧行控制信息中DMRS端口数对应的域为1时，UE计算侦听到的PSCCH调度的PSSCH的各DMRS端口的RSRP的平均值，将各DMRS端口的RSRP的平均值与接收功率阈值比较，以进行资源排除，保证PSSCH为双层传输时，可以将各DMRS端口的RSRP的平均值与接收功率阈值比较以进行资源选择，并且，还可以在比较之前对各DMRS端口的RSRP的平均值进行上调或者对RSRP阈值进行下调，保证UE对资源选择窗内的资源进行排除之后，剩余的资源可满足UE进行初传和重传需求，从而保证数据传输的可靠性，还可以保证单层传输与多层传输之间的UE行为的统一性和公平性。
实施例四
在本实施例中，UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：UE将PSSCH的各DMRS端口的RSRP之和与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
进一步地，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，包括：若比较结果为PSSCH的各DMRS端口的RSRP之和大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在本实施例中，当UE所用资源池被配置为，采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，且UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，UE分别根据PSSCH的两个DMRS端口测量出两个RSRP值，PSSCH-RSRP1000和PSSCH-RSRP1001，UE利用PSSCH-RSRP1000和PSSCH-RSRP1001的和与SL-RSRP阈值进行比较。
例如，UE在时刻n进行资源选择，n时刻为数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选的时刻。UE确定资源侦听窗[n-T0,n-Tproc,0)以及资源选择窗[n+T1,n+T2]，并根据资源侦听窗内的侦听结果，对资源选择窗内的资源进行排除。当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，如果满足公式(7)：
(PSSCH-RSRP1000+PSSCH-RSRP1001)>γij     (7)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式7中PSSCH-RSRP1000和PSSCH-RSRP1001是UE分别根据PSSCH的两个DMRS端口测量的RSRP值。γij为SL-RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。
本申请实施例提供的资源选择方法，当UE所用资源池被配置为，采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，且UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，UE将PSSCH的各DMRS端口的RSRP之和与接收功率阈值进行比较，保证PSSCH为双层传输时，可以将PSSCH的各DMRS端口的RSRP之和与接收功率阈值比较进行资源选择。
实施例五
本实施例中，UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：UE将PSSCH 的至少一个DMRS端口的RSRP与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
在本实施例中，当UE所用资源池被配置为，采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，且，当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，UE分别根据PSSCH的两个DMRS端口测量出两个RSRP值，PSSCH-RSRP1000和PSSCH-RSRP1001。UE利用PSSCH-RSRP1000或PSSCH-RSRP1001与SL-RSRP阈值进行比较。
在一些场景中，当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为0，说明UE侦听到的PSCCH调度的PSSCH为单层传输，UE测量到的PSSCH-RSRP相对于发送该PSSCH的UE的总发送功率，UE将PSSCH的RSRP与一个RSRP阈值比较。当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1，说明该PSCCH调度的PSSCH为双层传输，因为PSSCH双层传输时两个DMRS端口发送功率都是发送该PSSCH的UE总发送功率的一半，如果UE对两个DMRS端口测量得到的RSRP值取平均，则UE测量到的PSSCH的RSRP就几乎是单层传输时的PSSCH的RSRP的一半，为了维持比较不等式的公平性，需要对PSSCH的RSRP进行上调或者对RSRP阈值进行下调。
在其中一个实施例中，UE将PSSCH的至少一个DMRS端口的RSRP与接收功率阈值进行比较，包括：UE根据预设调整值对接收功率阈值进行下调，得到下调后的接收功率阈值；UE将PSSCH的至少一个DMRS端口的RSRP与下调后的接收功率阈值进行比较。
在本实施例中，UE在时刻n进行资源选择，n时刻为数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选的时刻。UE确定资源侦听窗[n-T0,n-Tproc,0)以及资源选择窗[n+T1,n+T2]，并根据资源侦听窗内的侦听结果，对资源选择窗内的资源进行排除。当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，如果满足公式(8)：
PSSCH-RSRP100X>γij–M      (8)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式8中PSSCH-RSRP100X为PSSCH-RSRP1000或PSSCH-RSRP1001，PSSCH-RSRP1000和PSSCH-RSRP1001是UE分别根据PSSCH的两个DMRS端口测量的RSRP值。γij为SL-RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。M为SL-RSRP阈值的下调整值，例如M为3dB，M为网络配置或预配置或根据资源池配置信息确定或基于UE自行选择。
在另一个实施例中，UE将PSSCH的至少一个DMRS端口的RSRP与接收功率阈值进行比较，包括：UE根据预设调整值对至少一个DMRS端口的RSRP进行上调，得到至少一个DMRS端口上调后的RSRP；UE将至少一个DMRS端口上调后的RSRP与接收功率阈值进行比较。
在本实施例中，UE在时刻n进行资源选择，n时刻为数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选的时刻。UE确定资源侦听窗[n-T0,n-Tproc,0)以及资源选择窗[n+T1,n+T2]，并根据资源侦听窗内的侦听结果，对资源选择窗内的资源进行排除。当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，如果满足公式(9)：
PSSCH-RSRP100X+M>γij     (9)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式9中PSSCH-RSRP100X为PSSCH-RSRP1000或PSSCH-RSRP1001，PSSCH-RSRP1000和PSSCH-RSRP1001是UE分别根据PSSCH的两个DMRS端口测量的RSRP值。γij为SL-RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。M为PSSCH-RSRP100X的上调整值，例如M为3dB，M为网络配置或预配置或根据资源池配置信息确定或基于UE自行选择。
本申请实施例提供的资源选择方法，当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1时，UE将PSSCH的至少一个DMRS端口的RSRP与下调后的接收功率阈值进行比较，当PSSCH的至少一个DMRS端口的RSRP大于接收功率阈值时，对UE的资源选择窗内的资源进行排除，保证PSSCH为双层传输时，可以根据PSSCH的各DMRS端口的RSRP与接收功率阈值比较进行资源选择。并且，还可以在比较之前对各DMRS端口的RSRP进行上调或者对RSRP阈值进行下调，保证UE对资源选择窗内的资源进行排除之后，剩余的资源可满足UE进行初传和重传需求，从而保证数据传输的可靠性，还可以保证单层传输与多层传输之间的UE行为的统一性和公平性。
在本实施例中，UE可以随机的从PSSCH的DMRS端口中选择一个DMRS端口，用该DMRS端口的RSRP并与接收功率阈值进行比较。则UE将PSSCH的至少一个DMRS端口的RSRP与接收功率阈值进行比较，包括：UE将PSSCH的任意一个DMRS端口的RSRP与接收功率阈值进行比较。
相应地，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，包括：若比较结果为任意一个DMRS端口的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在本实施例中，UE分别根据PSSCH的两个DMRS端口测量出两个RSRP值，PSSCH-RSRP1000和PSSCH-RSRP1001。UE利用PSSCH-RSRP1000或PSSCH-RSRP1001与SL-RSRP阈值进行比较，当PSSCH-RSRP1000或PSSCH-RSRP1001大于SL-RSRP阈值时，对UE的资源选择窗内的资源进行排除。UE可以随机的从PSSCH的DMRS端口中选择一个DMRS端口，用该DMRS端口的RSRP并与接收功率阈值进行比较，无需将PSSCH的所有DMRS端口的RSRP与RSRP阈值进行比较，从而减少UE的负荷。
在本实施例中，UE还可以将PSSCH的每个DMRS端口的RSRP与接收功率阈值进行比较，则UE将PSSCH的至少一个DMRS端口的RSRP与接收功率阈值进行比较，包括：UE将PSSCH的各DMRS端口的RSRP均与接收功率阈值进行比较。
相应地，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，包括：若比较结果为PSSCH的至少一个DMRS端口的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在本实施例中，UE分别根据PSSCH的两个DMRS端口测量出两个RSRP值，PSSCH-RSRP1000和PSSCH-RSRP1001。UE利用PSSCH-RSRP1000和PSSCH-RSRP1001均与SL-RSRP阈值进行比较，当其中的至少一个PSSCH-RSRP大于SL-RSRP阈值时，对UE的资源选择窗内的资源进行排除。虽然理论上PSSCH的两个DMRS端口的接收功率相同，但是实际场景中，PSSCH的两个DMRS端口的接收功率也可能会出现一些差异而不相同，UE将PSSCH的每个DMRS端口的RSRP均与接收功率阈值进行比较，当PSSCH的至少一个DMRS端口的RSRP大于接收功率阈值时，对UE的资源选择窗内的资源进行排除，保证资源排除的准确性。
上述实施例三、实施例四和实施例五可以作为与实施例二并列的方法，也可以作为对实施例二中的PSSCH-RSRP的各种不同实现方式的细化，本申请实施例中不加以限制。
实施例六
本实施例提供的资源选择方法，主要应用于UE采用单层发送的场景，PSSCH对应的最大DMRS端口数为至少两个，包括：UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的侧行控制信息中DMRS端口数对应的域为预设值，且，UE待发送的数据采用PSSCH单层发送。
在本实施例中，若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的侧行控制信息中DMRS端口数对应的域为预设值，且，UE待发送的数据采用PSSCH单层发送，则UE将信道的RSRP与预设的接收功率阈值进行比较。
在本实施例中，与前述实施例不同的是，不仅要UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的侧行控制信息中DMRS端口数对应的域为预设值，还要UE待发送的数据采用PSSCH单层发送时，UE将信道的RSRP与预设的接收功率阈值进行比较以进行资源选择。
进一步地，UE将信道的RSRP与预设的接收功率阈值进行比较，包括：UE将PSSCH的RSRP与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
相应地，根据比较结果确定是否对UE的资源选择窗内的资源进行排除，包括：若比较结果为PSSCH的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在本实施例中，当UE所用资源池被配置为，采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，且UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1，并且UE待发送的数据利用PSSCH单层发送时，UE分别根据PSSCH的两个DMRS端口测量出两个RSRP值，PSSCH-RSRP1000和PSSCH-RSRP1001，UE可以利用PSSCH-RSRP1000或PSSCH-RSRP1001或PSSCH-RSRP1000与PSSCH-RSRP1001的平均值与SL-RSRP阈值进行比较，本申请实施例中不加以限制。
可选地，UE将PSSCH的RSRP与接收功率阈值进行比较，包括：UE将PSSCH的至少一个DMRS端口的RSRP与接收功率阈值进行比较。或者，可选地，UE将PSSCH的RSRP与接收功率阈值进行比较，包括：UE将PSSCH的各DMRS端口的RSRP的平均值与接收功率阈值进行比较。
在本实施例中，UE在时刻n进行资源选择，n时刻为数据到达时刻或在re-evaluation过程中进行Step 1的时刻或针对被抢占的资源进行资源重选的时刻。UE确定资源侦听窗[n-T0,n-Tproc,0)以及资源选择窗[n+T1,n+T2]，并根据资源侦听窗内的侦听结果，对资源选择窗内的资源进行排除。当UE所用的资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与SL-RSRP阈值进行比较，并且当UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为1，以及UE待发送的数据采用PSSCH单层发送时，如果满足公式(10)：
PSSCH-RSRPreal>γij      (10)
则UE根据侦听到的PSCCH从资源选择窗内把对应的时频资源排除。公式10中PSSCH-RSRPreal为PSSCH-RSRP1000或PSSCH-RSRP1001或PSSCH-RSRP1000与PSSCH-RSRP1001的平均值， PSSCH-RSRP1000和PSSCH-RSRP1001是UE分别根据PSSCH的两个DMRS端口测量的RSRP值。γij为SL-RSRP阈值，i为侦听到的PSCCH中携带的优先级P1的取值，j为UE待发送数据的优先级P2的取值。
在本实施例中，UEPSSCH-RSRP1000或PSSCH-RSRP1001或PSSCH-RSRP1000与PSSCH-RSRP1001的平均值，与预设的接收功率阈值进行比较的各种场景的实现方式，可参照实施例三和实施例五，此处不再赘述。
本申请实施例提供的资源选择方法，当UE侦听到一个PSCCH调度的PSSCH为双层传输，那么其预留的资源很大可能也是双层传输，当UE采用单层发送时，如果不同DMRS端口之间的正交性很好，那么UE只会受到上述预留的资源里边的某一层的影响。因此，当UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的侧行控制信息中DMRS端口数对应的域为预设值，且UE待发送的数据采用PSSCH单层发送时，UE将PSSCH的RSRP与预设的接收功率阈值进行比较以进行资源选择，可以提高资源排除的准确性。
应该理解的是，虽然图8或图9的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，图8或图9中的至少一部分步骤可以包括多个子步骤或者多个阶段，这些子步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些子步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤的子步骤或者阶段的至少一部分轮流或者交替地执行。
在一个实施例中，如图10所示，提供了一种资源选择装置，包括：
比较模块11，用于若PSSCH对应的最大DMRS端口数为至少两个，则将信道的RSRP与预设的接收功率阈值进行比较；信道为UE侦听到的PSCCH或UE侦听到的PSCCH调度的PSSCH，最大DMRS端口数为UE侦听到的PSCCH调度的PSSCH的最大DMRS端口数，或，UE所用资源池中传输的PSSCH的最大DMRS端口数；
确定模块12，用于根据比较结果确定是否对UE的资源选择窗内的资源进行排除。
在其中一个实施例中，物理侧行共享信道PSSCH对应的最大解调参考信号DMRS端口数为至少两个，包括：
UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的侧行链路控制信息SCI中DMRS端口数对应的域为预设值。
在其中一个实施例中，物理侧行共享信道PSSCH对应的最大解调参考信号DMRS端口数为至少两个，包括：
UE所用资源池中传输的PSSCH的最大DMRS端口数为N，N大于1。
在一个实施例中，还提供了一种资源选择装置，该装置的结构与图10相同，但各个模块的功能不同，该装置包括：
比较模块11，用于若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，所述UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则所述UE将信道的RSRP与预设的接收功率阈值进行比较；
确定模块12，用于根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除。
在其中一个实施例中，比较模块11，用于将侦听到PSCCH的RSRP与接收功率阈值进行比较。
在其中一个实施例中，确定模块12，用于若比较结果为侦听到的PSCCH的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在其中一个实施例中，比较模块11，用于将PSSCH的RSRP与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
在其中一个实施例中，确定模块12，用于若比较结果为PSSCH的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在其中一个实施例中，比较模块11，用于根据预设的调整值对接收功率阈值下调，得到下调后的接收功率阈值；将PSSCH的RSRP与下调后的接收功率阈值进行比较。
在其中一个实施例中，比较模块11，用于根据预设的调整值对PSSCH的RSRP进行上调，得到上调后的PSSCH的RSRP；将上调后的PSSCH的RSRP与接收功率阈值进行比较。
在其中一个实施例中，比较模块11，用于将PSSCH的各DMRS端口的RSRP的平均值与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
在其中一个实施例中，确定模块12，用于若比较结果为PSSCH的各DMRS端口的RSRP的平均值大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在其中一个实施例中，比较模块11，用于根据预设调整值对接收功率阈值进行下调，得到下调后的接收功率阈值；将PSSCH的各DMRS端口的RSRP的平均值与下调后的接收功率阈值进行比较。
在其中一个实施例中，比较模块11，用于根据预设调整值对平均值进行上调，得到上调后的平均值；UE将上调后的平均值与接收功率阈值进行比较。
在其中一个实施例中，比较模块11，用于将PSSCH的各DMRS端口的RSRP之和与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
在其中一个实施例中，确定模块12，用于若比较结果为PSSCH的各DMRS端口的RSRP之和大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在其中一个实施例中，比较模块11，用于将PSSCH的至少一个DMRS端口的RSRP与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
在其中一个实施例中，比较模块11，用于将PSSCH的任意一个DMRS端口的RSRP与接收功率阈值进行比较。
在其中一个实施例中，确定模块12，用于若比较结果为任意一个DMRS端口的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在其中一个实施例中，比较模块11，用于将PSSCH的各DMRS端口的RSRP均与接收功率阈值进行比较。
在其中一个实施例中，确定模块12，用于若比较结果为PSSCH的至少一个DMRS端口的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在其中一个实施例中，比较模块11，用于根据预设调整值对接收功率阈值进行下调，得到下调后的接收功率阈值；将PSSCH的至少一个DMRS端口的RSRP与下调后的接收功率阈值进行比较。
在其中一个实施例中，比较模块11，用于根据预设调整值对至少一个DMRS端口的RSRP进行上调，得到至少一个DMRS端口上调后的RSRP；将至少一个DMRS端口上调后的RSRP与接收功率阈值进行比较。
在其中一个实施例中，PSSCH对应的最大DMRS端口数为至少两个，包括：UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的侧行控制信息中DMRS端口数对应的域为预设值，且，UE待发送的数据采用PSSCH单层发送。
在其中一个实施例中，比较模块11，用于若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与接收功率阈值进行比较，且，UE侦听到的PSCCH中传输的侧行控制信息中DMRS端口数对应的域为预设值，且，UE待发送的数据采用PSSCH单层发送，则将信道的RSRP与预设的接收功率阈值进行比较。
在其中一个实施例中，比较模块11，用于将PSSCH的RSRP与接收功率阈值进行比较；PSSCH为UE侦听到的PSCCH调度的PSSCH。
在其中一个实施例中，确定模块12，用于若比较结果为PSSCH的RSRP大于接收功率阈值，则对UE的资源选择窗内的资源进行排除。
在其中一个实施例中，比较模块11，用于将PSSCH的至少一个DMRS端口的RSRP与接收功率阈值进行比较。
在其中一个实施例中，比较模块11，用于将PSSCH的各DMRS端口的RSRP的平均值与接收功率阈值进行比较。
在其中一个实施例中，确定模块12，用于对资源选择窗内的目标资源进行排除，目标资源为UE侦听到的PSCCH中的SCI预留的资源。
上述实施例提供的一种资源选择装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
关于资源选择装置的具体限定可以参见上文中对于资源选择方法的限定，在此不再赘述。上述资源选择装置中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
图11为一个实施例中电子设备的内部结构示意图。如图11所示，该电子设备包括通过***总线连接的处理器和存储器。其中，该处理器用于提供计算和控制能力，支撑整个电子设备的运行。存储器可包括非易失性存储介质及内存储器。非易失性存储介质存储有操作***和计算机程序。该计算机程序可被处理器所执行，以用于实现以下各个实施例所提供的一种资源选择方法。内存储器为非易失性存储介质中的操作***计算机程序提供高速缓存的运行环境。该电子设备可以是手机、平板电脑、PDA(Personal Digital Assistant，个人数字助理)、POS(Point of Sales，销售终端)、车载电脑、穿戴式设备等任意终端设备。
本领域技术人员可以理解，图11中示出的结构，仅仅是与本申请方案相关的部分结构的框图，并不构成对本申请方案所应用于其上的计算机设备的限定，具体的计算机设备可以包括比图中所示更多或 更少的部件，或者组合某些部件，或者具有不同的部件布置。
在一个实施例中，提供一种电子设备，包括：处理器、存储器和收发器，处理器、存储器和收发器通过内部连接通路互相通信，存储器，用于存储程序代码；
处理器，用于调用存储器中存储的程序代码，以配合收发器实现上述方法实施例中任一项方法的步骤。
上述实施例提供的一种电子设备，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，提供了一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现上述方法实施例中任一项方法的步骤。
上述实施例提供的一种计算机可读存储介质，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
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，所述的计算机程序可存储于一非易失性计算机可读取存储介质中，该计算机程序在执行时，可包括如上述各方法的实施例的流程。其中，本申请所提供的各实施例中所使用的对存储器、存储、数据库或其它介质的任何引用，均可包括非易失性和/或易失性存储器。非易失性存储器可包括只读存储器(ROM)、可编程ROM(PROM)、电可编程ROM(EPROM)、电可擦除可编程ROM(EEPROM)或闪存。易失性存储器可包括随机存取存储器(RAM)或者外部高速缓冲存储器。作为说明而非局限，RAM以多种形式可得，诸如静态RAM(SRAM)、动态RAM(DRAM)、同步DRAM(SDRAM)、双数据率SDRAM(DDRSDRAM)、增强型SDRAM(ESDRAM)、同步链路(Synchlink)DRAM(SLDRAM)、存储器总线(Rambus)直接RAM(RDRAM)、直接存储器总线动态RAM(DRDRAM)、以及存储器总线动态RAM(RDRAM)等。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (60)

  1. 一种资源选择方法，其特征在于，所述方法包括：
    若物理侧行共享信道PSSCH对应的最大解调参考信号DMRS端口数为至少两个，则用户设备UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较；所述信道为所述UE侦听到的PSCCH或所述UE侦听到的PSCCH调度的PSSCH，所述最大DMRS端口数为所述UE侦听到的PSCCH调度的PSSCH的最大DMRS端口数，或，所述UE所用资源池中传输的PSSCH的最大DMRS端口数；
    根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除。
  2. 根据权利要求1所述的资源选择方法，其特征在于，所述物理侧行共享信道PSSCH对应的最大解调参考信号DMRS端口数为至少两个，包括：
    所述UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与所述接收功率阈值进行比较，且，所述UE侦听到的PSCCH中传输的侧行链路控制信息SCI中DMRS端口数对应的域为预设值。
  3. 根据权利要求1所述的资源选择方法，其特征在于，所述物理侧行共享信道PSSCH对应的最大解调参考信号DMRS端口数为至少两个，包括：
    所述UE所用资源池中传输的PSSCH的最大DMRS端口数为N，N大于1。
  4. 根据权利要求1-3任一项所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将所述侦听到PSCCH的RSRP与所述接收功率阈值进行比较。
  5. 根据权利要求4所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述侦听到的PSCCH的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  6. 根据权利要求2所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的RSRP与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  7. 根据权利要求6所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  8. 根据权利要求6所述的资源选择方法，其特征在于，所述UE将PSSCH的RSRP与所述接收功率阈值进行比较，包括：
    所述UE根据预设的调整值对所述接收功率阈值下调，得到下调后的接收功率阈值；
    所述UE将所述PSSCH的RSRP与所述下调后的接收功率阈值进行比较。
  9. 根据权利要求6所述的资源选择方法，其特征在于，所述UE将PSSCH的RSRP与所述接收功率阈值进行比较，包括：
    所述UE根据预设的调整值对所述PSSCH的RSRP进行上调，得到上调后的PSSCH的RSRP；
    所述UE将所述上调后的PSSCH的RSRP与所述接收功率阈值进行比较。
  10. 根据权利要求2所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的各DMRS端口的RSRP的平均值与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  11. 根据权利要求10所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的各DMRS端口的RSRP的平均值大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  12. 根据权利要求10所述的资源选择方法，其特征在于，所述UE将PSSCH的各DMRS端口的RSRP的平均值与所述接收功率阈值进行比较，包括：
    所述UE根据预设调整值对所述接收功率阈值进行下调，得到下调后的接收功率阈值；
    所述UE将所述PSSCH的各DMRS端口的RSRP的平均值与所述下调后的接收功率阈值进行比较。
  13. 根据权利要求10所述的资源选择方法，其特征在于，所述UE将PSSCH的各DMRS端口的RSRP的平均值与所述接收功率阈值进行比较，包括：
    所述UE根据预设调整值对所述平均值进行上调，得到上调后的平均值；
    所述UE将所述上调后的平均值与所述接收功率阈值进行比较。
  14. 根据权利要求2所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的各DMRS端口的RSRP之和与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  15. 根据权利要求14所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的各DMRS端口的RSRP之和大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  16. 根据权利要求2所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  17. 根据权利要求16所述的资源选择方法，其特征在于，所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较，包括：
    所述UE将所述PSSCH的任意一个DMRS端口的RSRP与所述接收功率阈值进行比较。
  18. 根据权利要求17所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述任意一个DMRS端口的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  19. 根据权利要求16所述的资源选择方法，其特征在于，所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较，包括：
    所述UE将所述PSSCH的各DMRS端口的RSRP均与所述接收功率阈值进行比较。
  20. 根据权利要求19所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的至少一个DMRS端口的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  21. 根据权利要求16所述的资源选择方法，其特征在于，所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较，包括：
    所述UE根据预设调整值对所述接收功率阈值进行下调，得到下调后的接收功率阈值；
    所述UE将所述PSSCH的至少一个DMRS端口的RSRP与所述下调后的接收功率阈值进行比较。
  22. 根据权利要求16所述的资源选择方法，其特征在于，所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较，包括：
    所述UE根据预设调整值对所述至少一个DMRS端口的RSRP进行上调，得到所述至少一个DMRS端口上调后的RSRP；
    所述UE将所述至少一个DMRS端口上调后的RSRP与所述接收功率阈值进行比较。
  23. 根据权利要求1所述的资源选择方法，其特征在于，所述物理侧行共享信道PSSCH对应的最大解调参考信号DMRS端口数为至少两个，包括：
    所述UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与所述接收功率阈值进行比较，且，所述UE侦听到的PSCCH中传输的侧行控制信息中DMRS端口数对应的域为预设值，且，所述UE待发送的数据采用PSSCH单层发送。
  24. 根据权利要求23所述的资源选择方法，其特征在于，所述UE将信道的RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的RSRP与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  25. 根据权利要求24所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  26. 根据权利要求24所述的资源选择方法，其特征在于，所述UE将所述PSSCH的RSRP与所述接收功率阈值进行比较，包括：
    所述UE将所述PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较。
  27. 根据权利要求24所述的资源选择方法，其特征在于，所述UE将所述PSSCH的RSRP与所述接收功率阈值进行比较，包括：
    所述UE将PSSCH的各DMRS端口的RSRP的平均值与所述接收功率阈值进行比较。
  28. 根据权利要求1所述的资源选择方法，其特征在于，所述对所述UE的资源选择窗内的资源进行排除，包括：
    对所述资源选择窗内的目标资源进行排除，所述目标资源为所述UE侦听到的PSCCH中的SCI预留的资源。
  29. 一种资源选择方法，其特征在于，所述方法包括：
    若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，所述UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则所述UE将信道的RSRP与预设的接收功率阈值进行比较；所述信道为所述UE侦听到的PSCCH或所述UE侦听到的PSCCH调度的PSSCH；
    根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除。
  30. 根据权利要求29所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将所述侦听到PSCCH的RSRP与所述接收功率阈值进行比较。
  31. 根据权利要求30所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述侦听到的PSCCH的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  32. 根据权利要求29所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的RSRP与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  33. 根据权利要求32所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  34. 根据权利要求32所述的资源选择方法，其特征在于，所述UE将PSSCH的RSRP与所述接收功率阈值进行比较，包括：
    所述UE根据预设的调整值对所述接收功率阈值下调，得到下调后的接收功率阈值；
    所述UE将所述PSSCH的RSRP与所述下调后的接收功率阈值进行比较。
  35. 根据权利要求32所述的资源选择方法，其特征在于，所述UE将PSSCH的RSRP与所述接收功率阈值进行比较，包括：
    所述UE根据预设的调整值对所述PSSCH的RSRP进行上调，得到上调后的PSSCH的RSRP；
    所述UE将所述上调后的PSSCH的RSRP与所述接收功率阈值进行比较。
  36. 根据权利要求29所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的各DMRS端口的RSRP的平均值与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  37. 根据权利要求36所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的各DMRS端口的RSRP的平均值大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  38. 根据权利要求36所述的资源选择方法，其特征在于，所述UE将PSSCH的各DMRS端口的RSRP的平均值与所述接收功率阈值进行比较，包括：
    所述UE根据预设调整值对所述接收功率阈值进行下调，得到下调后的接收功率阈值；
    所述UE将所述PSSCH的各DMRS端口的RSRP的平均值与所述下调后的接收功率阈值进行比较。
  39. 根据权利要求36所述的资源选择方法，其特征在于，所述UE将PSSCH的各DMRS端口的RSRP的平均值与所述接收功率阈值进行比较，包括：
    所述UE根据预设调整值对所述平均值进行上调，得到上调后的平均值；
    所述UE将所述上调后的平均值与所述接收功率阈值进行比较。
  40. 根据权利要求29所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的各DMRS端口的RSRP之和与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  41. 根据权利要求40所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的 资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的各DMRS端口的RSRP之和大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  42. 根据权利要求29所述的资源选择方法，其特征在于，所述UE将信道的信号接收功率RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  43. 根据权利要求42所述的资源选择方法，其特征在于，所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较，包括：
    所述UE将所述PSSCH的任意一个DMRS端口的RSRP与所述接收功率阈值进行比较。
  44. 根据权利要求43所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述任意一个DMRS端口的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  45. 根据权利要求42所述的资源选择方法，其特征在于，所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较，包括：
    所述UE将所述PSSCH的各DMRS端口的RSRP均与所述接收功率阈值进行比较。
  46. 根据权利要求45所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的至少一个DMRS端口的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  47. 根据权利要求42所述的资源选择方法，其特征在于，所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较，包括：
    所述UE根据预设调整值对所述接收功率阈值进行下调，得到下调后的接收功率阈值；
    所述UE将所述PSSCH的至少一个DMRS端口的RSRP与所述下调后的接收功率阈值进行比较。
  48. 根据权利要求42所述的资源选择方法，其特征在于，所述UE将PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较，包括：
    所述UE根据预设调整值对所述至少一个DMRS端口的RSRP进行上调，得到所述至少一个DMRS端口上调后的RSRP；
    所述UE将所述至少一个DMRS端口上调后的RSRP与所述接收功率阈值进行比较。
  49. 根据权利要求29所述的资源选择方法，其特征在于，所述若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，所述UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则所述UE将信道的RSRP与预设的接收功率阈值进行比较，包括：
    若所述UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与所述接收功率阈值进行比较，且，所述UE侦听到的PSCCH中传输的侧行控制信息中DMRS端口数对应的域为预设值，且，所述UE待发送的数据采用PSSCH单层发送，则所述UE将信道的RSRP与预设的接收功率阈值进行比较。
  50. 根据权利要求49所述的资源选择方法，其特征在于，所述UE将信道的RSRP与预设的接收功率阈值进行比较，包括：
    所述UE将PSSCH的RSRP与所述接收功率阈值进行比较；所述PSSCH为所述UE侦听到的PSCCH调度的PSSCH。
  51. 根据权利要求50所述的资源选择方法，其特征在于，所述根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除，包括：
    若所述比较结果为所述PSSCH的RSRP大于所述接收功率阈值，则对所述UE的资源选择窗内的资源进行排除。
  52. 根据权利要求50所述的资源选择方法，其特征在于，所述UE将所述PSSCH的RSRP与所述接收功率阈值进行比较，包括：
    所述UE将所述PSSCH的至少一个DMRS端口的RSRP与所述接收功率阈值进行比较。
  53. 根据权利要求50所述的资源选择方法，其特征在于，所述UE将所述PSSCH的RSRP与所述接收功率阈值进行比较，包括：
    所述UE将PSSCH的各DMRS端口的RSRP的平均值与所述接收功率阈值进行比较。
  54. 根据权利要求29所述的资源选择方法，其特征在于，所述对所述UE的资源选择窗内的资源进行排除，包括：
    对所述资源选择窗内的目标资源进行排除，所述目标资源为所述UE侦听到的PSCCH中的SCI预留的资源。
  55. 一种资源选择装置，其特征在于，所述装置包括：
    比较模块，用于若PSSCH对应的最大DMRS端口数为至少两个，则将信道的RSRP与预设的接收功率阈值进行比较；所述信道为所述UE侦听到的PSCCH或所述UE侦听到的PSCCH调度的PSSCH，所述最大DMRS端口数为所述UE侦听到的PSCCH调度的PSSCH的最大DMRS端口数，或，所述UE所用资源池中传输的PSSCH的最大DMRS端口数；
    确定模块，用于根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除。
  56. 一种资源选择装置，其特征在于，所述装置包括：
    比较模块，用于若UE所用资源池被配置为采用侦听到的PSCCH调度的PSSCH的RSRP与预设的接收功率阈值进行比较，且，所述UE侦听到的PSCCH中传输的SCI中DMRS端口数对应的域为预设值，则所述UE将信道的RSRP与预设的接收功率阈值进行比较；
    确定模块，用于根据比较结果确定是否对所述UE的资源选择窗内的资源进行排除。
  57. 一种电子设备，包括：处理器、存储器和收发器，所述处理器、所述存储器和所述收发器通过内部连接通路互相通信，其特征在于，
    所述存储器，用于存储程序代码；
    所述处理器，用于调用所述存储器中存储的程序代码，以配合所述收发器实现权利要求1至28中任一项所述方法的步骤。
  58. 一种电子设备，包括：处理器、存储器和收发器，所述处理器、所述存储器和所述收发器通过内部连接通路互相通信，其特征在于，
    所述存储器，用于存储程序代码；
    所述处理器，用于调用所述存储器中存储的程序代码，以配合所述收发器实现权利要求29至54中任一项所述方法的步骤。
  59. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现权利要求1至28中任一项所述的方法的步骤。
  60. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现权利要求29至54中任一项所述的方法的步骤。
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