WO2019178749A1 - 资源共享的方法和终端设备 - Google Patents

资源共享的方法和终端设备 Download PDF

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Publication number
WO2019178749A1
WO2019178749A1 PCT/CN2018/079635 CN2018079635W WO2019178749A1 WO 2019178749 A1 WO2019178749 A1 WO 2019178749A1 CN 2018079635 W CN2018079635 W CN 2018079635W WO 2019178749 A1 WO2019178749 A1 WO 2019178749A1
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WIPO (PCT)
Prior art keywords
terminal device
pssch
threshold
rsrp
transmission
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Application number
PCT/CN2018/079635
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English (en)
French (fr)
Inventor
唐海
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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 CN201880003216.XA priority Critical patent/CN109644436B/zh
Priority to PCT/CN2018/079635 priority patent/WO2019178749A1/zh
Publication of WO2019178749A1 publication Critical patent/WO2019178749A1/zh

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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
    • H04L5/0058—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
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by 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
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • 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
    • 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]

Definitions

  • the embodiments of the present application relate to the field of communications, and more specifically, to a method and a terminal device for resource sharing.
  • the vehicle networking or vehicle to Everything (V2X) communication system is a sidelink (SL) transmission technology based on D2D communication, which is adopted in the traditional Long Term Evolution (LTE) system.
  • LTE Long Term Evolution
  • the way in which the base station receives or transmits data is different.
  • the vehicle networking system adopts a terminal-to-terminal direct communication method, and thus has higher spectrum efficiency and lower transmission delay.
  • R14 abbreviated as R14
  • 3GPP 3rd Generation Partnership Project
  • mode 3GPP 3rd Generation Partnership Project
  • the terminal device of mode 3 and the terminal device of mode 4 transmit data in different resource pools.
  • the downlink transmission resource used by the terminal of mode 3 is allocated by the base station, and the terminal device transmits data on the side link according to the resource allocated by the base station; and the terminal of mode 4 can independently select the transmission of the side link.
  • Resources, such as terminal devices, can randomly select resources on the side-by-side link or determine resources by listening.
  • the terminal device of the mode 3 Since the terminal device of the mode 3 is connected to the base station, and the transmission resource thereof is allocated by the base station, when the terminal device of the mode 3 and the terminal device of the mode 4 coexist, the transmission reliability of the terminal device of the protection mode 3 is more required.
  • Terminal devices in the new version of the 3GPP protocol Release-15 can also use these two transmission modes. Moreover, when the terminal device of mode 4 in R15 shares data with the terminal device of mode 3 in R14, there may be mutual interference, thereby affecting the transmission reliability of the mode 3 terminal device.
  • the embodiment of the present application provides a resource sharing method and a terminal device, which can enable terminal devices of different transmission modes to reduce interference between each other when transmitting data in a common resource pool.
  • the first aspect provides a method for resource sharing, including: determining, by the first terminal device, a transmission mode of the second terminal device according to the received physical side-link control channel PSCCH of the second terminal device; Determining, by the first terminal device, the first PSSCH-RSRP threshold according to the transmission mode of the second terminal device; the first terminal device measuring the RSRP of the PSSCH corresponding to the PSCCH to obtain a first PSCCH-RSRP; The first terminal device determines an available resource set that can be used for data transmission according to a size relationship between the first PSSCH-RSRP and the first PSSCH-RSRP threshold.
  • the first terminal device determines a PSCCH-RSRP threshold according to the transmission mode of the second terminal device, and compares the measured PSCCH-RSRP with the PSCCH-RSRP threshold to determine an available resource set that can be used for data transmission,
  • the PSCCH-RSRP thresholds determined by the first terminal device according to different transmission modes are different, so that the data transmission of the terminal devices of different transmission modes can be protected in a targeted manner, in particular, the mode 3 in the second transmission mode, for example, R14 is reduced.
  • the interference of the terminal equipment is possible.
  • the first terminal device determines, according to a transmission mode of the second terminal device, a first PSSCH-RSRP threshold, including: if the second The transmission mode of the terminal device is the first transmission mode, and the first terminal device determines the first PSSCH-RSRP threshold in the first threshold set.
  • the transmission resource used by the terminal device in the first transmission mode for data transmission is independently selected based on the resource detection result.
  • the first terminal device determines, according to a transmission mode of the second terminal device, a first PSSCH- The RSRP threshold includes: if the transmission mode of the second terminal device is the second transmission mode, the first terminal device determines the first PSSCH-RSRP threshold in the second threshold set, where the second The transmission resources used by the terminal device in the transmission mode for data transmission are scheduled by the network device.
  • the PSSCH-RSRP threshold in the second threshold set is smaller than the first priority in the first threshold set
  • the first threshold set and the second threshold set are that the network device is the first terminal The device is configured, or is pre-existing in the first terminal device.
  • the method further includes: the first terminal device according to the first threshold set and the threshold offset Determining the second threshold set.
  • the first terminal device determines, according to a transmission mode of the second terminal device, a first PSSCH- The RSRP threshold includes: if the transmission mode of the second terminal device is the second transmission mode, the first terminal device determines a second PSSCH-RSRP threshold in the first threshold set; the first terminal device according to the The second PSSCH-RSRP threshold and the threshold offset determine the first PSSCH-RSRP threshold.
  • the first PSSCH-RSRP threshold is less than or equal to the second PSSCH-RSRP threshold.
  • the threshold offset is configured by the network device for the first terminal device, or is There is in the first terminal device.
  • the first terminal device determines a set of available resources that can be used for data transmission, including: if the first PSSCH-RSRP is greater than the first PSSCH-RSRP threshold, and the first terminal device selects and reserves The first terminal device determines that the second terminal device is occupied and reserved in the available resource set, and the first terminal device determines that the second terminal device is occupied and reserved. If the first PSSCH-RSRP is less than or equal to the first PSSCH-RSRP threshold, the first terminal device determines that the available resource set includes the second terminal device occupied and reserved. Transfer resources.
  • a second aspect provides a method for resource sharing, including: receiving, by a first terminal device, a PSCCH sent by a second terminal device, where the PSCCH carries priority information, and the second terminal device is a terminal in a second transmission mode.
  • the device, the transmission resource used by the terminal device in the second transmission mode to perform data transmission is scheduled by the network device; and the priority and priority indicated by the first terminal device according to the priority information carried in the PSCCH
  • the size relationship between the level thresholds determines the set of available resources that can be used for data transmission.
  • the first terminal device determines, according to the size relationship between the priority carried in the PSCCH of the second terminal device and the priority threshold, the available resource set that can be used for data transmission, because the second terminal
  • the priorities of the PSCCHs of the device are different, the set of available resources determined by the first terminal device is also different, so that the transmission of services with different priorities can be protected in a targeted manner, in particular, the second transmission mode is reduced.
  • the first terminal device determines, according to a relationship between a priority represented by the priority information and a priority threshold, that the data can be used for data.
  • the set of available resources for transmission includes: if the priority is higher than the priority threshold, the first terminal device determines that the available resource set does not include the transmission occupied and/or reserved by the second terminal device Resources.
  • the priority and the priority threshold that are indicated by the first terminal device according to the priority information further includes: the first terminal device measures a reference signal received power RSRP of the PSSCH corresponding to the PSCCH to obtain a first physics.
  • the first terminal device determines an available resource that can be used for data transmission according to a size relationship between a priority indicated by the priority information and a priority threshold And determining, by the first terminal device, the available resource set according to a size relationship between the first PSSCH-RSRP and a PSSCH-RSRP threshold, if the priority is lower than or equal to the priority threshold Whether the transmission resource occupied and reserved by the second terminal device is included in the medium.
  • the first terminal device is configured according to the first PSSCH-RSRP and the PSSCH-RSRP threshold Between the size relationships, the available resource set that can be used for data transmission, including: if the first PSSCH-RSRP is greater than the PSSCH-RSRP threshold, and the first terminal device selects and reserves the transmission resource, The first terminal device determines that the available resource set does not include the transmission resource occupied and reserved by the second terminal device; When the first PSCCH-RSRP is less than or equal to the PSSCH-RSRP threshold, the first terminal device determines that the available resource set includes the transmission resource occupied and reserved by the second terminal device.
  • the priority threshold is configured by the network device for the first terminal device, or is pre-existing In the first terminal device.
  • a terminal device which can perform the operations of the receiving node in the above first aspect or any optional implementation of the first aspect.
  • the terminal device may comprise a modular unit for performing the operations of the receiving node in any of the above-described first aspect or any of the possible implementations of the first aspect.
  • a terminal device which can perform the operations of the sending node in the above first aspect or any optional implementation of the first aspect.
  • the terminal device may comprise a modular unit for performing the operations of the transmitting node in any of the possible implementations of the second aspect or the second aspect described above.
  • a terminal device comprising: a processor, a transceiver, and a memory.
  • the processor, the transceiver, and the memory communicate with each other through an internal connection path.
  • the memory is for storing instructions for executing instructions stored by the memory.
  • the processor executes the instruction stored by the memory, the executing causes the terminal device to perform the method of the first aspect or any possible implementation of the first aspect, or the execution causes the terminal device to implement the terminal provided by the second aspect device.
  • a terminal device comprising: a processor, a transceiver, and a memory.
  • the processor, the transceiver, and the memory communicate with each other through an internal connection path.
  • the memory is for storing instructions for executing instructions stored by the memory.
  • the processor executes the instruction stored by the memory, the executing causes the terminal device to perform the method in any of the possible implementations of the second aspect or the second aspect, or the execution causes the terminal device to implement the terminal provided by the fourth aspect device.
  • a system chip in a seventh aspect, includes an input interface, an output interface, a processor, and a memory, the processor is configured to execute an instruction stored by the memory, and when the instruction is executed, the processor can implement the foregoing The method of any of the first aspect or any of the possible implementations of the first aspect.
  • a system chip in an eighth aspect, includes an input interface, an output interface, a processor, and a memory, the processor is configured to execute an instruction stored by the memory, and when the instruction is executed, the processor can implement the foregoing The method of any of the second aspect or any possible implementation of the second aspect.
  • a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the first aspect or the first aspect of the first aspect.
  • a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the above-described second or second aspect of the second aspect.
  • FIG. 1 is a schematic structural diagram of an application scenario of an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of another application scenario of the embodiment of the present application.
  • FIG. 3 is a schematic diagram of resource sensing and selection in an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a method for resource sharing in an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a method for resource sharing according to another embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a terminal device according to another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a system chip according to an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • the present application describes various embodiments in connection with a terminal device.
  • the terminal device may also refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user agent.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • PLMN public land mobile network
  • the present application describes various embodiments in connection with a network device.
  • the network device may be a device for communicating with the terminal device, for example, may be a base station (Base Transceiver Station, BTS) in the GSM system or CDMA, or may be a base station (NodeB, NB) in the WCDMA system, or may be An evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a network side device in a future 5G network or a future evolved PLMN network. Network side devices, etc.
  • FIG. 1 and FIG. 2 are schematic diagrams of an application scenario of an embodiment of the present application.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the wireless communication system may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, the present invention The embodiment does not limit this.
  • the wireless communication system may further include other network entities such as a Mobile Management Entity (MME), a Serving Gateway (S-GW), and a Packet Data Network Gateway (P-GW).
  • MME Mobile Management Entity
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • embodiments of the invention are not limited thereto.
  • the terminal device 20 and the terminal device 30 can communicate in a D2D communication mode.
  • the terminal device 20 and the terminal device 30 directly communicate through a D2D link, ie, a side link (Sidelink, SL).
  • a side link Sidelink, SL
  • the terminal device 20 and the terminal device 30 directly communicate via a side line.
  • the terminal device 20 and the terminal device 30 communicate by a side line, and the transmission resources thereof are allocated by the network device; in FIG. 2, the terminal device 20 and the terminal device 30 pass the side link. Communication, whose transmission resources are independently selected by the terminal device, does not require the network device to allocate transmission resources.
  • the D2D communication may refer to a vehicle to vehicle (V2V) communication or a vehicle to Everything (V2X) communication.
  • V2X communication X can refer to any device with wireless receiving and transmitting capabilities, such as but not limited to slow moving wireless devices, fast moving in-vehicle devices, or network control nodes with wireless transmit and receive capabilities. It should be understood that the embodiment of the present invention is mainly applied to the scenario of V2X communication, but can also be applied to any other D2D communication scenario, which is not limited in this embodiment of the present invention.
  • a terminal device having a listening capability such as a Vehicle User Equipment (VUE) or a Pedestrian User Equipment (PUE), and no listening.
  • VUE Vehicle User Equipment
  • PUE Pedestrian User Equipment
  • Capable terminal equipment such as PUE.
  • VUE has higher processing power and is usually powered by the battery in the car, while PUE has lower processing power, and reducing power consumption is also a major factor that PUE needs to consider. Therefore, in the existing car network system, VUE is considered to have Full reception and listening capabilities; while PUE is considered to have partial or no reception and listening capabilities.
  • the resource may be selected by using a similar listening method as the VUE, and the available resources may be selected on the part of the resources that can be intercepted; if the PUE does not have the listening capability, the PUE is in the resource pool. Randomly select transmission resources.
  • transmission mode 3 (mode 3) and transmission mode 4 (mode 4).
  • the transmission resource of the terminal device of mode 3 (referred to as mode 3) is allocated by the base station, and the terminal device performs data transmission on the side line according to the resource allocated by the base station; the base station may allocate a single transmission resource for the terminal device. It is also possible to allocate semi-statically transmitted resources to the terminal device. If the terminal device of transmission mode 4 (referred to as mode 4 for short) has the capability of intercepting, it uses the methods of sensing and reservation to transmit data. If there is no listening capability, the terminal device randomly selects the transmission in the resource pool. Resources.
  • the terminal device with the interception capability acquires the available resource set by means of interception in the resource pool, and the terminal device randomly selects one resource from the set for data transmission. Since the service in the car network system has periodic characteristics, the terminal device usually adopts a semi-static transmission mode, that is, after the terminal device selects one transmission resource, the terminal device continuously uses the resource in multiple transmission cycles, thereby reducing the resource weight. The probability of selection and resource conflicts.
  • the terminal device carries the information for reserving the next transmission resource in the control information of the current transmission, so that the other terminal device can determine whether the resource is reserved and used by the terminal device by detecting the control information of the terminal device. Reduce the purpose of resource conflicts.
  • the terminal device can perform the method shown in FIG. 3, for example, when performing resource sensing.
  • each sidelink process one carrier can include two processes
  • resource selection or resource reselection is required, and the terminal device is based on the front
  • the listening result of the listening window of 1s ie 1000ms
  • T1 and T2 can satisfy, for example, T1 ⁇ 4, 20 ⁇ T2 ⁇ 100.
  • the first 1 s described later is the first 1 s of the pointer for the time n.
  • the specific resource selection process is as follows.
  • the terminal device 20 listens to the resources of the terminal device 30 as an example for description:
  • the transmission period may be an element in a set of transmission periods, which may be, for example, ⁇ 20, 50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 ⁇ ms. For example, as shown in FIG.
  • the terminal 20 will use the resource A1. Excluded from the candidate resource set S_A.
  • the terminal device 20 detects the physical sidelink control channel (PSCCH) sent by the terminal device 30 in the listening window of the first 1 s, and the physical side row shared channel corresponding to the PSCCH
  • the measured value of the Reference Signal Received Power (RSRP) of the (Physical Sidelink Shared Channel, PSSCH) is higher than the PSSCH-RSRP threshold, and the detected PSCCH indicates that the terminal device 30 that sends the PSCCH reserves the subsequent
  • the time-frequency resource required for transmission (for example, in FIG. 3, the time-frequency resource reserved by the terminal device 30 is a time-domain location corresponding to the resource B in the listening window, which is located after the resource B, 100 ms, 200 ms, 300 ms, ..., etc.
  • the time-frequency resource B1) determines the time-frequency resource reserved by the terminal device 30 in the selection window, and the time-frequency resource selected by the user in the selection window for transmitting data (for example, in FIG. 3,
  • the time-frequency resource reserved by the terminal device 20 is whether the time-frequency resource A1) located after the resource A corresponding to the resource A in the listening window overlaps (including all overlapping or partial overlapping). If there is an overlap, that is, a resource conflict occurs, the terminal device 20 excludes the time-frequency resource within the selection window from the candidate resource set S_A. At this time, it is assumed that the number of remaining resources in the candidate resource set S_A is equal to B.
  • the terminal device 20 may increase the PSSCH-RSRP threshold by 3 dB, and repeat steps (0) through (2) until B ⁇ A ⁇ 20 %.
  • the PSSCH-RSRP threshold that is finally obtained is the PSSCH-RSRP threshold corresponding to the carrier where the side-line process is located.
  • the terminal device 20 performs a measurement of a Received Signal Strength Indicator (RSSI) on the remaining B resources in the candidate resource set S_A, and sorts the measurement result from high to low, and the signal strength is the lowest. ⁇ 20% of the resources are moved to the candidate resource set S_B.
  • RSSI Received Signal Strength Indicator
  • the terminal device 20 selects a time-frequency resource for data transmission in the candidate resource set S_B with equal probability.
  • time-frequency resource occupied by the data channel corresponding to a certain control channel is referred to as a time-frequency resource (or a resource block) for transmitting the data channel, and the candidate resource set in each selection window is included.
  • resources A1 and B1 in FIG. 3 can be referred to as one time-frequency resource.
  • the terminal device 20 After the terminal device 20 selects the time-frequency resource for data transmission, the time-frequency resource is continuously used in each transmission cycle of the subsequent transmission process, and the time-frequency resource C_resel is used in total, wherein C_resel is a resource reselection counter ( Resource Reselection Counter), the value of C_resel is decremented by 1 every time data is transmitted.
  • C_resel is a resource reselection counter ( Resource Reselection Counter)
  • the value of C_resel is decremented by 1 every time data is transmitted.
  • the terminal device 20 When the value of C_resel is reduced to 0, the terminal device 20 generates a random number between [0, 1] and maintains the probability of resources (Probability).
  • the resource Keep, ProbResourceKeep parameter is compared. The parameter indicates the probability that the terminal device continues to use the resource. If the value of the random number is greater than the parameter, the terminal device 20 performs resource reselection. If the value of the random number is smaller than the parameter
  • the terminal device of mode 4 in R15 determines the resource occupancy condition by detecting the PSCCH of the terminal device of mode 3 in R14 during resource sensing. For example, when the resource reserved bit in the PSCCH detected by the terminal of mode 4 of R15 is 0, the PSCCH may be from the terminal device of mode 3 of R14, or only a single transmission from mode 4 of R15. Terminal Equipment.
  • a conservative manner is that if the terminal device of mode 4 of R15 detects that the resource reserved bit of the PSCCH is 0, the PSSCH scheduled resource corresponding to the PSCCH is excluded from the available resource set, thereby avoiding the R14.
  • the terminal device of mode 3 causes interference, but this is a resource that may be excluded from the terminal device of mode 4 of R15 that performs only one transmission, thereby causing unnecessary waste of resources.
  • the side link control information (SCI) of the terminal device of R15 is used. You can carry the following information:
  • Mode indication information used to indicate whether the current transmission is a transmission of mode 3 or a transmission of mode 4.
  • Version indication information used to indicate that the current transmission is a transmission in R14 or a transmission in R15.
  • the embodiment of the present application provides that the first terminal device determines a PSCCH-RSRP threshold based on a transmission mode of the second terminal device, and determines, according to the PSCCH-RSRP threshold, an available resource set that can be used for data transmission, because the first terminal device is configured according to
  • the PSCCH-RSRP thresholds determined by different transmission modes are different, so that the data transmission of the terminal devices of different transmission modes can be protected in a targeted manner, in particular, the interference to the terminal devices of the mode 3 in the second transmission mode, for example, R14 can be reduced. .
  • FIG. 4 is a schematic flowchart of a method for resource sharing in D2D communication according to an embodiment of the present application.
  • the method shown in FIG. 4 can be performed by a first terminal device, which can be, for example, the terminal device 20 or the terminal device 30 shown in FIG. 2.
  • the method for resource sharing in the D2D communication includes:
  • the first terminal device determines a transmission mode of the second terminal device according to the received physical sidelink control channel (PSCCH) of the second terminal device.
  • PSCCH physical sidelink control channel
  • the first terminal device determines a first physical side shared channel reference signal received power (PSSCH-RSRP) threshold according to the transmission mode of the second terminal device.
  • PSSCH-RSRP physical side shared channel reference signal received power
  • the first terminal device measures the reference signal received power RSRP of the PSSCH corresponding to the PSCCH to obtain a first PSCCH-RSRP.
  • the first terminal device determines a set of available resources that can be used for data transmission according to a size relationship between the first PSSCH-RSRP and the first PSSCH-RSRP threshold.
  • the first terminal device determines, according to the PSCCH, a transmission mode of the second terminal device.
  • the first terminal device determines a first PSCCH-RSRP threshold to be used according to a transmission mode of the second terminal device.
  • the measurement result is the first PSCCH-RSRP
  • the first terminal device compares the first PSCCH-RSRP with the first PSSCH-RSRP threshold.
  • the size of the available resource set that can be used for data transmission includes whether the second terminal device occupies and reserves the transmission resource.
  • the available resource set described herein may be, for example, the candidate resource set S_A described in the description of FIG. 3, and the related description of the available resource set may refer to the description of the candidate resource set S_A. Let me repeat.
  • the first terminal device determines a PSCCH-RSRP threshold according to the transmission mode of the second terminal device, and compares the measured PSCCH-RSRP threshold with the PSCCH-RSRP threshold to determine a set of available resources that can be used for data transmission. Since the PSCCH-RSRP thresholds determined by the first terminal device according to different transmission modes are different, the data transmission of the terminal devices of different transmission modes can be protected in a targeted manner, in particular, the mode in the second transmission mode, such as R14, is reduced. 3 terminal device interference.
  • the PSCCH of the second terminal device carries the transmission mode indication information
  • the first terminal device determines the transmission mode of the second terminal device according to the received transmission mode indication information in the PSCCH of the second terminal device.
  • the second terminal device is the terminal device of mode 3 of R15
  • the PSCCH of the second terminal device carries the transmission.
  • the mode indication information when the first terminal device receives the PSCCH of the second terminal device, may determine the transmission mode of the second terminal device according to the transmission mode indication information therein.
  • the PSCCH of the second terminal device carries the version indication information
  • the first terminal device determines the transmission mode of the second terminal device according to the received version indication information in the PSCCH of the second terminal device. For example, when the terminal of the mode 3 of the R14 and the terminal of the mode 4 of the R15 share the resource pool, if the second terminal device is the terminal device of the mode 3 of the R15, the PSCCH of the second terminal device carries the version indication information, if the The second terminal device is the terminal device of mode 3 of the R14, and the PSCCH in the second terminal device does not carry the version indication information.
  • the first terminal device may determine that the transmission mode of the second terminal device is the first transmission mode, that is, the second terminal The transmission resources of the device are selected autonomously based on the listening results.
  • the first terminal device may determine that the transmission mode of the second terminal device is the second transmission mode, that is, the second terminal The transmission resources of the device are based on network scheduling.
  • the transmission mode indication information or the version indication information may be indicated by a bit in the SCI, or indicated by a different SCI format.
  • the first terminal device determines, according to a size relationship between the first PSSCH-RSRP and the first PSSCH-RSRP threshold, a set of available resources that can be used for data transmission, including:
  • the first terminal device determines that the available resource set does not include the transmission resource occupied and reserved by the second terminal device;
  • the first terminal device determines that the available resource set includes the transmission resource occupied and reserved by the second terminal device.
  • a terminal device that supports a communication protocol of Release-14 and does not support Release-15 will support a communication protocol of Release-15.
  • the terminal device is simply referred to as the terminal device of Release-15.
  • the terminal device of Release-15 may include a terminal device supporting Release-15 or a terminal device supporting other versions of Release-15, for example, a terminal device supporting Release-16 of Release-15.
  • the first transmission mode described in the embodiment of the present application may be, for example, the transmission mode 4 in R14 of the foregoing 3GPP protocol, and the transmission resource used by the terminal device in the first transmission mode for data transmission is based on resource detection.
  • the second transmission mode in the embodiment of the present application may be, for example, the foregoing 3GPP protocol.
  • the second transmission mode in the embodiment of the present application may be, for example, the foregoing 3GPP protocol.
  • Transmission mode 3 in R14, the transmission resource used by the terminal device in the second transmission mode for data transmission is scheduled by the network device.
  • the embodiments of the present application provide two ways to determine the first PSSCH-RSRP threshold, which are separately described below.
  • the first terminal device determines, according to the transmission mode of the second terminal device, the first PSSCH-RSRP threshold, including:
  • the first terminal device determines the first PSSCH-RSRP threshold in the first threshold set
  • the first terminal device determines the first PSSCH-RSRP threshold in the second threshold set.
  • two sets of thresholds that is, a first threshold set and a second threshold set, may be configured.
  • the first terminal device detects that the transmission mode of the second terminal device is the first transmission mode
  • the first terminal device determines the first PSCCH-RSRP threshold in the first threshold set
  • the first terminal device detects the first When the transmission mode of the second terminal device is the second transmission mode
  • the first terminal device determines the first PSCCH-RSRP threshold in the second threshold set.
  • the PSCCH-RSRP threshold in the second threshold set is smaller than the PSCCH-RSRP threshold in the first threshold set.
  • the PSSCH-RSRP threshold in the second threshold set is smaller than the PSSCH-RSRP threshold corresponding to the same priority information in the first threshold set.
  • the priority information includes the information of the priority (ProSe Per-Packet Priority, PPPP) carried in the PSCCH, and the priority information of the data to be sent of the first terminal device.
  • PPPP ProSe Per-Packet Priority
  • the PSSCH-RSRP threshold for performing resource selection is reduced, thereby ensuring protection of resources occupied by the terminal device in the second transmission mode, and avoiding or reducing Interference to the terminal device of the second transmission mode.
  • the PSCCH-RSRP threshold in the second threshold set is smaller than the PSCCH-RSRP threshold in the first threshold set, it is assumed here that the PSSCH-RSRP threshold in the second threshold set is negative infinity, that is, when the first terminal When the device detects that the PSSCH of the second terminal device indicates the second transmission mode, the resource indicated by the PSSCH for data transmission by the second terminal device or the reserved resource thereof is excluded from the set of available resources.
  • the second threshold set is set, and the first terminal device needs to measure the first PSSCH-RSRP and the first of the second threshold set.
  • the PSSCH-RSRP thresholds are compared to determine a set of available resources, so the first terminal device does not simply directly exclude the resources occupied and/or reserved by the second terminal device, but the first obtained according to the measurement.
  • the comparison between the PSSCH-RSRP and the first PSSCH-RSR threshold value is judged and excluded, thereby avoiding the exclusion of the resources of the terminal device of the first transmission mode and performing only one transmission, thereby improving the system resource utilization.
  • the terminal device determines the resource usage by detecting the PSCCH. If the terminal successfully detects the PSCCH, it measures the PSSCH-RSRP of the corresponding PSSCH channel, and compares the measured PSSCH-RSRP with one.
  • the comparison of the PSSCH-RSRP threshold value is determined by the priority information PPPP1 carried in the detected PSCCH and the priority information PPPP2 of the data to be transmitted by the current terminal equipment. For example, a total of eight priority information is defined in R14. Therefore, in combination with the priority information carried in the received PSCCH and the priority information of the data to be transmitted, there are a total of 64 priority information combinations, and the 64 priority combinations are combined. Corresponding to 64 PSSCH-RSRP thresholds respectively.
  • the first terminal device may use the priority information PPPP1 carried in the PSCCH of the second terminal device and the first terminal.
  • the priority information PPPP2 of the to-be-transmitted data of the device determines the first PSSCH-RSRP threshold corresponding to the priority combination of the priority information PPPP1 and the priority information PPPP2 in the 64 PSSCH-RSRP thresholds in the first threshold set. And the measured first PSSCH-RSRP is compared with the first PSSCH-RSRP threshold.
  • the first terminal device may use the priority information PPPP1 carried in the PSCCH of the second terminal device and the first terminal.
  • the priority information PPPP2 of the data to be transmitted of the device determines the first PSSCH-RSRP threshold corresponding to the priority combination of the priority information PPPP1 and the priority information PPPP2 in the 64 PSSCH-RSRP thresholds in the second threshold set. And the measured first PSSCH-RSRP is compared with the first PSSCH-RSRP threshold.
  • the first threshold set and the second threshold set may be configured by the network device for the first terminal device, or are pre-existing, for example, by a protocol in the first terminal device.
  • the first terminal device may determine the second threshold set by itself. For example, the first terminal device determines the second threshold set according to the first threshold set and the threshold offset.
  • the first threshold set may be, for example, a threshold set composed of 64 PSSCH-RSRP thresholds currently used in R14.
  • the threshold offset may be, for example, configured by the network device for the first terminal device or as pre-existing in the first terminal device, for example as specified in the protocol.
  • the first terminal device determines, according to the transmission mode of the second terminal device, the first PSSCH-RSRP threshold, including:
  • the first terminal device determines the first PSSCH-RSRP threshold in the first threshold set
  • the first terminal device determines a second PSSCH-RSRP threshold in the first threshold set, and determines according to the second PSSCH-RSRP threshold and the threshold offset.
  • the first PSSCH-RSRP threshold is the second PSSCH-RSRP threshold.
  • the first PSSCH-RSRP threshold is less than or equal to the second PSSCH-RSRP threshold.
  • the first terminal device determines a second PSSCH-RSRP threshold in the first threshold set, and the first terminal device according to the second PSSCH- The RSRP threshold and the threshold offset determine that the first PSSCH-RSRP threshold is the value of the second PSSCH-RSRP plus the threshold offset.
  • the PSSCH-RSRP threshold for performing resource selection is reduced, thereby ensuring protection of resources occupied by the terminal device in the second transmission mode, and avoiding or reducing Interference with the terminal device of Mode 3 in the second transmission mode, such as R14.
  • FIG. 5 is a schematic flowchart of a method for resource sharing in D2D communication according to an embodiment of the present application.
  • the method shown in FIG. 5 can be performed by a first terminal device, which can be, for example, the terminal device 20 or the terminal device 30 shown in FIG. 2.
  • the method for resource sharing in the D2D communication includes:
  • the first terminal device receives the PSCCH sent by the second terminal device, where the PSCCH carries priority information, and the second terminal device is the terminal device in the second transmission mode.
  • the transmission resource used by the terminal device in the second transmission mode for data transmission is scheduled by the network device.
  • the first terminal device determines a set of available resources that can be used for data transmission according to a size relationship between a priority indicated by the priority information carried in the PSCCH and a priority threshold.
  • the first terminal device detects the PSCCH sent by the second terminal device, determining, according to the PSCCH, the transmission mode of the second terminal device, if the transmission mode of the second terminal device is the second transmission mode, for example, detecting The resource reservation bit in the PSCCH is 0, and the first terminal device compares the priority information with a priority threshold according to the priority information carried in the PSCCH, thereby determining available resources that can be used for data transmission. set.
  • the first terminal device determines, according to the size relationship between the priority carried in the PSCCH of the second terminal device and the priority threshold, the available resource set that can be used for data transmission, because the second terminal
  • the priorities of the PSCCHs of the device are different, the set of available resources determined by the first terminal device is also different, so that the transmission of services with different priorities can be protected in a targeted manner, in particular, the second transmission mode is reduced.
  • the available resource set described herein may be, for example, the candidate resource set S_A described in the description of FIG. 3, and the related description of the available resource set may refer to the description of the candidate resource set S_A. Let me repeat.
  • the priority threshold is configured by the network device for the first terminal device, or is pre-existing in the first terminal device.
  • the first terminal device determines, according to the size relationship between the priority indicated by the priority information and the priority threshold, the available resource set that can be used for data transmission, including: if the priority information indicates priority The level is higher than the priority threshold, and the first terminal device determines that the available resource set does not include the transmission resource occupied and/or reserved by the second terminal device.
  • the method before the determining, by the first terminal device, the available resource set that can be used for data transmission according to the relationship between the priority indicated by the priority information and the priority threshold, the method further includes: the first The terminal device measures the RSRP of the PSSCH corresponding to the PSCCH to obtain a first PSCCH-RSRP;
  • the first terminal device determines, according to the size relationship between the priority level indicated by the priority information and the priority threshold, the available resource set that can be used for data transmission, including: if the priority is lower than or equal to the priority.
  • the first terminal device determines, according to the size relationship between the first PSSCH-RSRP and the PSSCH-RSRP threshold, whether the available resource set includes the transmission resource occupied and reserved by the second terminal device.
  • priority information such as PPPP is divided into eight levels, wherein the lower the value in the priority information, the higher the priority.
  • the first terminal device excludes resources occupied and/or reserved by the second terminal device from the set of available resources. Therefore, it is possible to avoid interference with the high priority service transmitted by the terminal device of the mode 3 in the second transmission mode, for example, R14, and to avoid the resources of the terminal device performing the single transmission of the first transmission mode, thereby improving system resources. Utilization rate.
  • the first terminal device determines, according to the size relationship between the first PSSCH-RSRP and the PSSCH-RSRP threshold, a set of available resources that can be used for data transmission, including:
  • the first PSSCH-RSRP is greater than the PSSCH-RSRP threshold, and the transmission resource selected and reserved by the first terminal device overlaps with the transmission resource occupied and/or reserved by the second terminal device, the first Determining, by the terminal device, that the available resource set does not include the transmission resource occupied and reserved by the second terminal device;
  • the first terminal device determines that the available resource set includes the transmission resource occupied and reserved by the second terminal device.
  • FIG. 6 is a schematic block diagram of a terminal device 600 according to an embodiment of the present application.
  • the terminal device 600 is a first terminal device.
  • the first terminal device 600 includes a determining unit 610 and a measuring unit 620. among them:
  • the determining unit 610 is configured to determine, according to the received physical side-link control channel PSCCH of the second terminal device, a transmission mode of the second terminal device;
  • the determining unit 610 is further configured to determine, according to the transmission mode of the second terminal device, a first physical side row shared channel reference signal received power PSSCH-RSRP threshold;
  • the measuring unit 620 is configured to measure the reference signal received power RSRP of the PSSCH corresponding to the PSCCH, to obtain a first PSCCH-RSRP;
  • the determining unit 610 is further configured to determine, according to a size relationship between the first PSSCH-RSRP and the first PSSCH-RSRP threshold measured by the measuring unit, a set of available resources that can be used for data transmission.
  • the first terminal device determines a PSCCH-RSRP threshold according to the transmission mode of the second terminal device, and compares the measured PSCCH-RSRP threshold with the PSCCH-RSRP threshold to determine a set of available resources that can be used for data transmission. Since the PSCCH-RSRP thresholds determined by the first terminal device according to different transmission modes are different, the data transmission of the terminal devices of different transmission modes can be protected in a targeted manner, in particular, the mode in the second transmission mode, such as R14, is reduced. 3 terminal device interference.
  • the determining unit 610 is specifically configured to: if the transmission mode of the second terminal device is the first transmission mode, determine, by the first terminal device, the first PSSCH-RSRP in the first threshold set. a threshold, wherein the transmission resource used by the terminal device in the first transmission mode for data transmission is independently selected based on a resource listening result.
  • the determining unit 610 is specifically configured to: if the transmission mode of the second terminal device is the second transmission mode, determine, by the first terminal device, the first PSSCH-RSRP in the second threshold set. a threshold, wherein the transmission resource used by the terminal device in the second transmission mode for data transmission is scheduled by the network device.
  • the PSSCH-RSRP threshold in the second threshold set is smaller than a PSSCH-RSRP threshold corresponding to the same priority information in the first threshold set, where the priority information includes: a priority carried in the PSCCH Level information, and/or priority information of the data to be transmitted of the first terminal device.
  • the first threshold set and the second threshold set are configured by the network device for the first terminal device, or are pre-existing in the first terminal device.
  • the determining unit 610 is further configured to: determine the second threshold set according to the first threshold set and the threshold offset.
  • the determining unit 610 is specifically configured to: if the transmission mode of the second terminal device is the second transmission mode, the first terminal device determines a second PSSCH-RSRP threshold in the first threshold set; The first terminal device determines the first PSSCH-RSRP threshold according to the second PSSCH-RSRP threshold and a threshold offset.
  • the first PSSCH-RSRP threshold is less than or equal to the second PSSCH-RSRP threshold.
  • the threshold offset is configured by the network device for the first terminal device or pre-existing in the first terminal device.
  • the determining unit 610 is specifically configured to: if the first PSSCH-RSRP is greater than the first PSSCH-RSRP threshold, and the first terminal device selects and reserves a transmission resource, and the foregoing If there is an overlap between the transmission resources occupied by the second terminal device and/or the reserved transmission resources, it is determined that the available resource set does not include the transmission resource occupied and reserved by the second terminal device; if the first PSSCH-RSRP is smaller than Or equal to the first PSSCH-RSRP threshold, determining that the available resource set includes the transmission resource occupied and reserved by the second terminal device.
  • terminal device 600 can perform the corresponding operations performed by the first terminal device in the foregoing method 400, and details are not described herein for brevity.
  • FIG. 7 is a schematic block diagram of a first terminal device 700 according to an embodiment of the present application.
  • the terminal device 700 is a first terminal device.
  • the first terminal device 700 includes a transceiver unit 710 and a determining unit 720. among them:
  • the transceiver unit 710 is configured to receive a physical side-link control channel (PSCCH) sent by the second terminal device, where the PSCCH carries priority information, the second terminal device is a terminal device in the second transmission mode, and the second The transmission resource used by the terminal device in the transmission mode for data transmission is scheduled by the network device;
  • PSCCH physical side-link control channel
  • the determining unit 720 is configured to determine, according to the size relationship between the priority indicated by the priority information and the priority threshold that is carried in the PSCCH received by the transceiver unit 710, available resources that can be used for data transmission set.
  • the first terminal device determines, according to the size relationship between the priority carried in the PSCCH of the second terminal device and the priority threshold, the available resource set that can be used for data transmission, because the second terminal
  • the priorities of the PSCCHs of the device are different, the set of available resources determined by the first terminal device is also different, so that the transmission of services with different priorities can be protected in a targeted manner, in particular, the second transmission mode is reduced.
  • the determining unit 720 is specifically configured to: if the priority is higher than the priority threshold, determine, that the available resource set does not include the second terminal device occupied and/or reserved transmission Resources.
  • the first terminal device further includes a measurement unit, where the measurement unit is configured to: measure a RSRP of the PSSCH corresponding to the PSCCH, to obtain a first PSCCH-RSRP, where the determining unit 720 is specifically used. And determining, according to the size relationship between the first PSSCH-RSRP and the PSSCH-RSRP threshold, whether the second resource is included in the available resource set, if the priority is lower than or equal to the priority threshold.
  • the determining unit 720 is specifically configured to: if the first PSSCH-RSRP is greater than the PSSCH-RSRP threshold, and the transmission resource selected and reserved by the first terminal device is occupied by the second terminal device And the transmission resource that is reserved and reserved is not included in the set of available resources, and the first PSCCH-RSRP is less than or equal to the The PSSCH-RSRP threshold determines that the available resource set includes the transmission resource occupied and reserved by the second terminal device.
  • the priority threshold is configured by the network device for the first terminal device, or is pre-existing in the first terminal device.
  • terminal device 700 can perform the corresponding operations performed by the first terminal device in the foregoing method 500, and details are not described herein for brevity.
  • FIG. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application.
  • the terminal device includes a processor 810, a transceiver 820, and a memory 830, wherein the processor 810, the transceiver 820, and the memory 830 communicate with each other through an internal connection path.
  • the memory 830 is for storing instructions
  • the processor 810 is configured to execute instructions stored by the memory 830 to control the transceiver 820 to receive signals or send signals.
  • the processor 810 can call the program code stored in the memory 830 to perform the corresponding operations performed by the first terminal device in the method 400.
  • the processor 810 can call the program code stored in the memory 830 to perform the corresponding operations performed by the first terminal device in the method 400.
  • the processor 810 can call the program code stored in the memory 830 to perform the corresponding operations performed by the first terminal device in the method 500.
  • the processor 810 can call the program code stored in the memory 830 to perform the corresponding operations performed by the first terminal device in the method 500.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • FIG. 9 is a schematic structural diagram of a system chip according to an embodiment of the present application.
  • the system chip 900 of FIG. 9 includes an input interface 901, an output interface 902, at least one processor 903, and a memory 904.
  • the input interface 901, the output interface 902, the processor 903, and the memory 904 are interconnected by an internal connection path.
  • the processor 903 is configured to execute code in the memory 904.
  • the processor 903 can implement a corresponding operation performed by the terminal device in the method 400. For the sake of brevity, it will not be repeated here.
  • the processor 903 can implement corresponding operations performed by the network device in the method 500 when the code is executed. For the sake of brevity, it will not be repeated here.
  • B corresponding to (corresponding to) A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

本申请公开了一种资源共享的方法和终端设备，包括：第一终端设备根据接收到的第二终端设备的PSCCH确定第二终端设备的传输模式；第一终端设备根据第二终端设备的传输模式确定第一PSSCH-RSRP门限；第一终端设备对所述PSCCH对应的PSSCH的RSRP进行测量，得到第一PSCCH-RSRP；第一终端设备根据所述第一PSSCH-RSRP与所述第一PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合。由于第一终端设备根据不同的传输模式确定的PSCCH-RSRP门限不同，因此能够有针对性地对使用不同传输模式的终端设备的数据传输进行保护，特别是降低对第二传输模式的终端设备的干扰。

Description

资源共享的方法和终端设备 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及资源共享的方法和终端设备。
背景技术
车联网或称车到设备(Vehicle to Everything，V2X)通信系统是基于D2D通信的一种侧行链路(Sidelink，SL)传输技术，与传统的长期演进(Long Term Evolution，LTE)系统中通过基站接收或者发送数据的方式不同，车联网系统采用终端到终端直接通信的方式，因此具有更高的频谱效率和更低的传输时延。在第三代合作伙伴项目(the 3rd Generation Partnership Project，3GPP)协议的版本Release-14(简写为R14)中，针对车联网定义了两种传输模式，即模式3(mode 3)和模式4(mode 4)。模式3的终端设备与模式4的终端设备在不同的资源池中传输数据。其中，模式3的终端使用的侧行链路传输资源是由基站分配的，终端设备根据基站分配的资源在侧行链路上传输数据；而模式4的终端可以自主选取侧行链路的传输资源，比如终端设备可以在侧行链路随机选择资源或通过侦听方式确定资源。
由于模式3的终端设备与基站连接，并且其传输资源是由基站分配的，因此当模式3的终端设备和模式4的终端设备共存的时候，更需要保护模式3的终端设备的传输可靠性。
3GPP协议的新版本Release-15(简写为R15)中的终端设备，同样也可以使用这两种传输模式。并且，R15中的模式4的终端设备，与R14中的模式3的终端设备共资源池传输数据时，可能存在相互之间的干扰，从而影响模式3终端设备的传输可靠性。
因此，如何使不同传输模式的终端设备能够在通信系统中共同进行数据传输且减少相互干扰，是一个亟待解决的问题。
发明内容
本申请实施例提供了一种资源共享的方法和终端设备，能够使得不同传输模式的终端设备在共资源池传输数据时，减少相互之间的干扰。
第一方面，提供了一种资源共享的方法，包括：第一终端设备根据接收到的第二终端设备的物理侧行链路控制信道PSCCH，确定所述第二终端设备的传输模式；所述第一终端设备根据所述第二终端设备的传输模式，确定第一PSSCH-RSRP门限；所述第一终端设备对所述PSCCH对应的PSSCH的RSRP进行测量，得到第一PSCCH-RSRP；所述第一终端设备根据所述第一PSSCH-RSRP与所述第一PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合。
因此，第一终端设备根据第二终端设备的传输模式，确定PSCCH-RSRP门限，并将测量得到的PSCCH-RSRP与该PSCCH-RSRP门限比较，从而确定能够用于数据传输的 可用资源集合，由于第一终端设备根据不同的传输模式确定的PSCCH-RSRP门限不同，因此能够有针对性地对不同传输模式的终端设备的数据传输进行保护，特别是降低对第二传输模式例如R14中的模式3的终端设备的干扰。
结合第一方面，在第一方面的一种可能的实现方式中，所述第一终端设备根据所述第二终端设备的传输模式，确定第一PSSCH-RSRP门限，包括：若所述第二终端设备的传输模式为第一传输模式，则所述第一终端设备在第一门限集合中确定所述第一PSSCH-RSRP门限。其中，所述第一传输模式的终端设备进行数据传输所使用的传输资源为基于资源侦听结果而自主选择的。
结合第一方面或上述任一种可能的实现方式，在第一方面的另一种可能的实现方式中，所述第一终端设备根据所述第二终端设备的传输模式，确定第一PSSCH-RSRP门限，包括：若所述第二终端设备的传输模式为第二传输模式，则所述第一终端设备在第二门限集合中确定所述第一PSSCH-RSRP门限，其中，所述第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的。
结合第一方面或上述任一种可能的实现方式，在第一方面的另一种可能的实现方式中，所述第二门限集合中的PSSCH-RSRP门限小于第一门限集合中对应于相同优先级信息的PSSCH-RSRP门限，其中，所述优先级信息包括：所述PSCCH中携带的优先级信息，和/或所述第一终端设备的待发送数据的优先级信息。
结合第一方面或上述任一种可能的实现方式，在第一方面的另一种可能的实现方式中，所述第一门限集合和所述第二门限集合为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
结合第一方面或上述任一种可能的实现方式，在第一方面的另一种可能的实现方式中，所述方法还包括：所述第一终端设备根据第一门限集合和门限偏移量，确定所述第二门限集合。
结合第一方面或上述任一种可能的实现方式，在第一方面的另一种可能的实现方式中，所述第一终端设备根据所述第二终端设备的传输模式，确定第一PSSCH-RSRP门限，包括：若所述第二终端设备的传输模式为第二传输模式，所述第一终端设备在第一门限集合中确定第二PSSCH-RSRP门限；所述第一终端设备根据所述第二PSSCH-RSRP门限和门限偏移量，确定所述第一PSSCH-RSRP门限。
结合第一方面或上述任一种可能的实现方式，在第一方面的另一种可能的实现方式中，所述第一PSSCH-RSRP门限小于或等于所述第二PSSCH-RSRP门限。
结合第一方面或上述任一种可能的实现方式，在第一方面的另一种可能的实现方式中，所述门限偏移量为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
结合第一方面或上述任一种可能的实现方式，在第一方面的另一种可能的实现方式中，所述第一终端设备根据所述第一PSSCH-RSRP与所述第一PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：若所述第一PSSCH-RSRP大于所述第一PSSCH-RSRP门限，且所述第一终端设备选择和预留的传输资源，与所述第 二终端设备占用和/或预留的传输资源之间存在重叠，则所述第一终端设备确定所述可用资源集合中不包括所述第二终端设备占用和预留的传输资源；若所述第一PSSCH-RSRP小于或等于所述第一PSSCH-RSRP门限，则所述第一终端设备确定所述可用资源集合中包括所述第二终端设备占用和预留的传输资源。
第二方面，提供了一种资源共享的方法，包括：第一终端设备接收第二终端设备发送的PSCCH，所述PSCCH中携带优先级信息，所述第二终端设备为第二传输模式的终端设备，所述第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的；所述第一终端设备根据所述PSCCH中携带的所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合。
因此，通过设置优先级门限，第一终端设备根据第二终端设备的PSCCH中携带的优先级与该优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合，由于第二终端设备的PSCCH中携带的优先级不同时，第一终端设备确定的可用资源集合也不同，因此能够有针对性地对具有不同优先级的业务的传输进行保护，特别是降低对第二传输模式例如R14中的模式3的终端设备传输的高优先级业务的干扰。
结合第二方面，在第二方面的一种可能的实现方式中，所述第一终端设备根据所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：若所述优先级高于所述优先级门限，所述第一终端设备确定所述可用资源集合中不包括所述第二终端设备占用和/或预留的传输资源。
结合第二方面或上述任一种可能的实现方式，在第二方面的另一种可能的实现方式中，在所述第一终端设备根据所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合之前，所述方法还包括：所述第一终端设备对所述PSCCH对应的PSSCH的参考信号接收功率RSRP进行测量，得到第一物理侧行共享信道参考信号接收功率PSCCH-RSRP；其中，所述第一终端设备根据所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：若所述优先级低于或等于所述优先级门限，所述第一终端设备根据所述第一PSSCH-RSRP与PSSCH-RSRP门限之间的大小关系，确定所述可用资源集合中是否包括所述第二终端设备占用和预留的传输资源。
结合第二方面或上述任一种可能的实现方式，在第二方面的另一种可能的实现方式中，所述第一终端设备根据所述第一PSSCH-RSRP与所述PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：若第一PSSCH-RSRP大于所述PSSCH-RSRP门限，且所述第一终端设备选择和预留的传输资源，与所述第二终端设备占用和/或预留的传输资源之间存在重叠，则所述第一终端设备确定所述可用资源集合中不包括所述第二终端设备占用和预留的传输资源；若所述第一PSCCH-RSRP小于或等于所述PSSCH-RSRP门限，则所述第一终端设备确定所述可用资源集合中包括所述第二终端设备占用和预留的传输资源。
结合第二方面或上述任一种可能的实现方式，在第二方面的另一种可能的实现方式中，所述优先级门限为网络设备为所述第一终端设备配置的，或者为预存在所述第一终 端设备中的。
第三方面，提供了一种终端设备，该终端设备可以执行上述第一方面或第一方面的任意可选的实现方式中的接收节点的操作。具体地，该终端设备可以包括用于执行上述第一方面或第一方面的任意可能的实现方式中的接收节点的操作的模块单元。
第四方面，提供了一种终端设备，该终端设备可以执行上述第一方面或第一方面的任意可选的实现方式中的发送节点的操作。具体地，该终端设备可以包括用于执行上述第二方面或第二方面的任意可能的实现方式中的发送节点的操作的模块单元。
第五方面，提供了一种终端设备，该终端设备包括：处理器、收发器和存储器。其中，该处理器、收发器和存储器之间通过内部连接通路互相通信。该存储器用于存储指令，该处理器用于执行该存储器存储的指令。当该处理器执行该存储器存储的指令时，该执行使得该终端设备执行第一方面或第一方面的任意可能的实现方式中的方法，或者该执行使得该终端设备实现第二方面提供的终端设备。
第六方面，提供了一种终端设备，该终端设备包括：处理器、收发器和存储器。其中，该处理器、收发器和存储器之间通过内部连接通路互相通信。该存储器用于存储指令，该处理器用于执行该存储器存储的指令。当该处理器执行该存储器存储的指令时，该执行使得该终端设备执行第二方面或第二方面的任意可能的实现方式中的方法，或者该执行使得该终端设备实现第四方面提供的终端设备。
第七方面，提供了一种系统芯片，该系统芯片包括输入接口、输出接口、处理器和存储器，该处理器用于执行该存储器存储的指令，当该指令被执行时，该处理器可以实现前述第一方面或第一方面的任意可能的实现方式中的方法。
第八方面，提供了一种系统芯片，该系统芯片包括输入接口、输出接口、处理器和存储器，该处理器用于执行该存储器存储的指令，当该指令被执行时，该处理器可以实现前述第二方面或第二方面的任意可能的实现方式中的方法。
第九方面，提供了一种包括指令的计算机程序产品，当所述计算机程序产品在计算机上运行时，使得该计算机执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第十方面，提供了一种包括指令的计算机程序产品，当所述计算机程序产品在计算机上运行时，使得该计算机执行上述第二方面或第二方面的任意可能的实现方式中的方法。
附图说明
图1是本申请实施例的一种应用场景的示意性架构图。
图2是本申请实施例的另一种应用场景的示意性架构图。
图3是本申请实施例的资源侦听和选择的示意图。
图4是本申请实施例的资源共享的方法的示意性流程图。
图5是本申请另一实施例的资源共享的方法的示意性流程图。
图6是本申请实施例的终端设备的示意性框图。
图7是本申请另一实施例的终端设备的示意性框图。
图8是本申请实施例的通信设备的示意性结构图。
图9是本申请实施例的系统芯片的示意性结构图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
应理解，本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile Communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、以及未来的5G通信系统等。
本申请结合终端设备描述了各个实施例。终端设备也可以指用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的陆上公用移动通信网(Public Land Mobile Network，PLMN)网络中的终端设备等。
本申请结合网络设备描述了各个实施例。网络设备可以是用于与终端设备进行通信的设备，例如，可以是GSM系统或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络侧设备或未来演进的PLMN网络中的网络侧设备等。
图1和图2是本申请实施例的一个应用场景的示意图。图1示例性地示出了一个网络设备和两个终端设备，可选地，该无线通信系统可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本发明实施例对此不做限定。此外，该无线通信系统还可以包括移动管理实体(Mobile Management Entity，MME)、服务网关(Serving Gateway，S-GW)、分组数据网络网关(Packet Data Network Gateway，P-GW)等其他网络实体，但本发明实施例不限于此。
具体地，终端设备20和终端设备30可以D2D通信模式进行通信，在进行D2D通信时，终端设备20和终端设备30通过D2D链路即侧行链路(Sidelink，SL)直接进行通信。例如图1或者图2所示，终端设备20和终端设备30通过侧行链路直接进行通信。在图1中，终端设备20和终端设备30之间通过侧行链路通信，其传输资源是由网络设备分配的；在图2中，终端设备20和终端设备30之间通过侧行链路通信，其传输资源 是由终端设备自主选取的，不需要网络设备分配传输资源。
D2D通信可以指车对车(Vehicle to Vehicle，简称“V2V”)通信或车辆到其他设备(Vehicle to Everything，V2X)通信。在V2X通信中，X可以泛指任何具有无线接收和发送能力的设备，例如但不限于慢速移动的无线装置，快速移动的车载设备，或是具有无线发射接收能力的网络控制节点等。应理解，本发明实施例主要应用于V2X通信的场景，但也可以应用于任意其它D2D通信场景，本发明实施例对此不做任何限定。
在车联网系统中，可以存在两种类型的终端设备，即具有侦听能力的终端设备例如车载终端(Vehicle User Equipment，VUE)或行人手持终端(Pedestrian User Equipment，PUE)，以及不具有侦听能力的终端设备例如PUE。VUE具有更高的处理能力，并且通常通过车内的蓄电池供电，而PUE处理能力较低，降低功耗也是PUE需要考虑的一个主要因素，因此在现有的车联网系统中，VUE被认为具有完全的接收能力和侦听能力；而PUE被认为具有部分或者不具有接收和侦听能力。如果PUE具有部分侦听能力，其资源的选取可以采用和VUE类似的侦听方法，在可侦听的那部分资源上进行可用资源的选取；如果PUE不具有侦听能力，则PUE在资源池中随机选取传输资源。
在3GPP协议的版本Release-14中，定义了两种传输模式，即传输模式3(mode 3)和传输模式4(mode 4)。模式3(简称为模式3)的终端设备的传输资源是由基站分配的，终端设备根据基站分配的资源在侧行链路上进行数据的发送；基站可以为终端设备分配单次传输的资源，也可以为终端设备分配半静态传输的资源。传输模式4(简称为模式4)的终端设备如果具备侦听能力，采用侦听(sensing)和预留(reservation)的方式传输数据，如果不具备侦听能力，则在资源池中随机选取传输资源。具备侦听能力的终端设备在资源池中通过侦听的方式获取可用的资源集合，终端设备从该集合中随机选取一个资源进行数据传输。由于车联网系统中的业务具有周期性特征，因此终端设备通常采用半静态传输的方式，即终端设备选取一个传输资源后，就会在多个传输周期中持续的使用该资源，从而降低资源重选以及资源冲突的概率。终端设备会在本次传输的控制信息中携带预留下次传输资源的信息，从而使得其他终端设备可以通过检测该终端设备的控制信息判断这块资源是否被该终端设备预留和使用，达到降低资源冲突的目的。
终端设备在进行资源侦听时例如可以执行图3所示的方法。其中，每个侧行链路进程(sidelink process)中(一个载波可以包括两个进程)，当时刻n附近有新的数据包到达时，需要进行资源选取或者资源重选，终端设备根据对前1s(即1000ms)侦听窗的侦听结果，在时间间隔[n+T1，n+T2]ms中进行资源选取，[n+T1，n+T2]ms这一时间段称为选择窗，其中T1和T2例如可以满足T1≤4、20≤T2≤100。后面所述的前1s都是指针对n时刻而言的前1s。具体的资源选取过程如下，这里以终端设备20侦听终端设备30的资源为例进行描述：
(0)假设选择窗内的所有资源组成候选资源集合S_A，假设最初的该候选资源集合S_A中的资源数量为A：
(1)如果侦听窗内的某个子帧上没有侦听结果，与该子帧之间按照一定传输周期分布的被预留的另一子帧落在选择窗内，那么选择窗内的该另一子帧上的资源被排除在该 候选资源集合S_A之外，并且，终端设备20按照某个传输周期预留的传输资源所在的子帧上的资源，也会被排除在该候选资源集合S_A之外。该传输周期可以是传输周期集合中的元素，该传输周期集合例如可以为{20，50，100，200，300，400，500，600，700，800，900，1000}ms。例如图3所示，如果终端20在侦听窗内资源A上没有侦听结果，并且与该资源A对应的下一个传输周期上的资源是选择窗内的资源A1，那么终端20将资源A1从候选资源集合S_A中排除。
(2)如果终端设备20在前1s的侦听窗内，检测到终端设备30发送的物理侧行链路控制信道(Physical Sidelink Control Channel，PSCCH)，且该PSCCH所对应的物理侧行共享信道(Physical Sidelink Shared Channel，PSSCH)的参考信号接收功率(Reference Signal Received Power，RSRP)的测量值高于PSSCH-RSRP门限，并且检测到的该PSCCH指示了发送该PSCCH的终端设备30预留了后续传输所需的时频资源(例如图3中，终端设备30预留的时频资源为，与侦听窗内资源B相对应的位于资源B之后100ms、200ms、300ms、……等时域位置的时频资源B1)，那么终端设备20会判断选择窗内被终端设备30预留的时频资源，与自己在该选择窗内选择的用于传输数据的时频资源(例如图3中，终端设备20预留的时频资源为，与侦听窗内资源A相对应的位于资源A之后的时频资源A1)是否重叠(包括全部重叠或者部分重叠)。如果重叠，即发生资源冲突，那么终端设备20将该选择窗内的该时频资源排除在候选资源集合S_A之外。此时，假设该候选资源集合S_A中剩余的资源数量等于B。
应理解，如果终端设备20在该选择窗内为自己选择了用于传输数据的该时频资源，并且在按照时间周期T20分布的多个该时频资源上都需要传输数据，那么此时，如果终端设备30预留了按照时间周期T30分布的多个该时频资源，且时间周期T20满足T20×M＝T30×N，M和N为正整数，那么终端设备20会将按照时间周期T20分布的多个该时频资源排除在该候选资源集合之外。
(3)如果候选资源集合S_A中剩余的资源数量B小于A×20％，终端设备20可以将PSSCH-RSRP门限提高3dB，并且重复步骤(0)至步骤(2)，直到B≥A×20％。
本申请实施例中，最终得到的该PSSCH-RSRP门限即为该侧行链路进程所在的载波对应的PSSCH-RSRP门限。
(4)终端设备20对候选资源集合S_A中剩余的B个资源进行接收信号强度指示(Received Signal Strength Indicator，RSSI)的测量，并且按照测量结果由高到低进行排序，将信号强度最低的A×20％个的资源移到候选资源集合S_B中。
(5)终端设备20在候选资源集合S_B中，等概率地选取一个时频资源用于数据传输。
应理解，这里将某个控制信道对应的数据信道所占用的时频资源，称为用于传输该数据信道的一个时频资源(或一个资源块)，每个选择窗内的候选资源集合中可以存在多个时频资源用于传输该数据信道。例如图3中的资源A1和B1均可以称为一个时频资源。
当终端设备20选取了用于数据传输的时频资源后，会在后续传输过程的各个传输周 期中持续使用该时频资源，共计使用该时频资源C_resel次，其中C_resel为资源重选计数器(Resource Reselection Counter)，每传输一次数据，C_resel的值减1，当C_resel的值减至0时，终端设备20会产生一个位于[0，1]之间的随机数，并与资源保持概率(Probability Resource Keep，ProbResourceKeep)参数进行比较，该参数表示终端设备继续使用该资源的概率，如果该随机数的值大于该参数，终端设备20进行资源重选，如果该随机数的值小于该参数，终端设备20可以继续使用该时频资源进行数据传输，并且同时重置C_resel的值。
R15中的模式4的终端设备，与R14中的模式3的终端设备共资源池传输数据时，由于R14的模式3的终端设备不会进行资源侦听，因此需要R15的模式4的终端设备进行侦听。R15中的模式4的终端设备在资源侦听过程中通过检测R14中的模式3的终端设备的PSCCH，来判断资源占用情况。例如，当R15的模式4的终端检测到的PSCCH中的资源预留位为0，则该PSCCH可能来自于R14的模式3的终端设备，或者来自于R15的模式4的只进行单次传输的终端设备。一种保守的方式是，R15的模式4的终端设备只要检测到PSCCH的资源预留位为0，就把该PSCCH对应的PSSCH调度的资源从其可用资源集合中排除掉，从而避免对R14的模式3的终端设备造成干扰，但是，这就是可能排除了R15的模式4的只进行单次传输的终端设备所使用的资源，从而造成不必要的资源浪费。
其中，可选地，R15中的模式4的终端设备，与R14中的模式3的终端设备共资源池传输数据时，R15的终端设备的侧行链路控制信息(Sidelink Control Information，SCI)中可以携带如下信息：
(1)模式指示信息：用于指示当前传输是模式3的传输还是模式4的传输。
(2)版本指示信息：用于指示当前传输是R14中的传输或者是R15中的传输。
本申请实施例提出，第一终端设备基于第二终端设备的传输模式，确定PSCCH-RSRP门限，并基于该PSCCH-RSRP门限，确定能够用于数据传输的可用资源集合，由于第一终端设备根据不同的传输模式确定的PSCCH-RSRP门限不同，因此能够有针对性地对不同传输模式的终端设备的数据传输进行保护，特别是降低对第二传输模式例如R14中的模式3的终端设备的干扰。
图4是本申请一个实施例的D2D通信中资源共享的方法的示意性流程图。图4所示的方法可以由第一终端设备执行，该第一终端设备例如可以为图2中所示的终端设备20或终端设备30。如图4所示，该D2D通信中资源共享的方法包括：
在410中，第一终端设备根据接收到的第二终端设备的物理侧行链路控制信道(Physical Sidelink Control Channel，PSCCH)，确定该第二终端设备的传输模式。
在420中，该第一终端设备根据该第二终端设备的传输模式，确定第一物理侧行共享信道参考信号接收功率(Physical Sidelink Shared Channel Reference Signal Received Power，PSSCH-RSRP)门限。
在430中，该第一终端设备对该PSCCH对应的PSSCH的参考信号接收功率RSRP进行测量，得到第一PSCCH-RSRP。
在440中，该第一终端设备根据该第一PSSCH-RSRP与该第一PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合。
具体地，第一终端设备检测到第二终端设备发送的PSCCH后，根据该PSCCH确定该第二终端设备的传输模式。该第一终端设备根据该第二终端设备的传输模式，确定待使用的第一PSCCH-RSRP门限。该第一终端设备对该PSCCH对应的PSSCH的RSRP进行测量时得到的测量结果为第一PSCCH-RSRP，该第一终端设备通过比较该第一PSCCH-RSRP与该第一PSSCH-RSRP门限之间的大小，确定能够用于数据传输的可用资源集合中是否包括该第二终端设备占用和预留的传输资源。
其中，这里所述的可用资源集合，例如可以是关于图3的描述中所述的候选资源集合S_A，关于可用资源集合的相关描述，可以参考对候选资源集合S_A的描述，为了简洁，这里不再赘述。
第一终端设备根据第二终端设备的传输模式，确定PSCCH-RSRP门限，并将测量得到的PSCCH-RSRP门限与该PSCCH-RSRP门限比较，从而确定能够用于数据传输的可用资源集合。由于第一终端设备根据不同的传输模式确定的PSCCH-RSRP门限不同，因此能够有针对性地对不同传输模式的终端设备的数据传输进行保护，特别是降低对第二传输模式例如R14中的模式3的终端设备的干扰。
可选的，该第二终端设备的PSCCH中携带传输模式指示信息，该第一终端设备根据接收到的该第二终端设备的PSCCH中的传输模式指示信息，确定该第二终端设备的传输模式。例如，假设第二终端设备为R15的模式3的终端设备，当R15的模式3的终端设备和R15的模式4的终端设备共资源池传输数据时，该第二终端设备的PSCCH中携带该传输模式指示信息，当第一终端设备接收到该第二终端设备的PSCCH时，根据其中的该传输模式指示信息可以确定该第二终端设备的传输模式。
可选的，该第二终端设备的PSCCH中携带版本指示信息，该第一终端设备根据接收到的该第二终端设备的该PSCCH中的版本指示信息，确定该第二终端设备的传输模式。例如，当R14的模式3的终端和R15的模式4的终端共资源池时，若第二终端设备为R15的模式3的终端设备，该第二终端设备的PSCCH中携带版本指示信息，若第二终端设备为R14的模式3的终端设备，该第二终端设备中的PSCCH中不携带版本指示信息。当该第一终端设备接收到的该第二终端设备的PSCCH中携带该版本指示信息时，该第一终端设备可以确定该第二终端设备的传输模式是第一传输模式，即该第二终端设备的传输资源是基于侦听结果自主选取的。当该第一终端设备接收到的该第二终端设备的PSCCH中不携带版本指示信息时，该第一终端设备可以确定该第二终端设备的传输模式是第二传输模式，即该第二终端设备的传输资源是基于网络调度的。
可选的，该传输模式指示信息或版本指示信息可以通过SCI中的比特进行指示，或者通过不同的SCI格式指示。
可选地，在440中，该第一终端设备根据该第一PSSCH-RSRP与该第一PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：
若该第一PSSCH-RSRP大于该第一PSSCH-RSRP门限，且该第一终端设备选择和预 留的传输资源，与该第二终端设备占用和/或预留的传输资源之间存在重叠，则该第一终端设备确定该可用资源集合中不包括该第二终端设备占用和预留的传输资源；
若该第一PSSCH-RSRP小于或等于该第一PSSCH-RSRP门限，则该第一终端设备确定该可用资源集合中包括该第二终端设备占用和预留的传输资源。
应理解，本申请实施例中，将支持版本Release-14的通信协议且不支持Release-15的通信协议的终端设备，简称为Release-14的终端设备，将支持版本Release-15的通信协议的终端设备简称为Release-15的终端设备。其中，Release-15的终端设备可以包括支持Release-15的终端设备或者支持Release-15的其他版本的终端设备，例如支持Release-15的Release-16的终端设备。
还应理解，本申请实施例中所述的第一传输模式例如可以为前述3GPP协议的R14中的传输模式4，该第一传输模式的终端设备进行数据传输所使用的传输资源为基于资源侦听结果而自主选择的，比如在相应的资源池中随机选择的资源，或者终端设备基于资源侦听的结果确定的资源；本申请实施例中该的第二传输模式例如可以为前述3GPP协议的R14中的传输模式3，该第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的。
本申请实施例提供两种确定第一PSSCH-RSRP门限的方式，下面分别描述。
方式1
可选地，在420中，该第一终端设备根据该第二终端设备的传输模式，确定第一PSSCH-RSRP门限，包括：
若该第二终端设备的传输模式为第一传输模式，则该第一终端设备在第一门限集合中确定该第一PSSCH-RSRP门限；
若该第二终端设备的传输模式为第二传输模式，则该第一终端设备在第二门限集合中确定该第一PSSCH-RSRP门限。
具体地，可以配置两套门限集合，即第一门限集合和第二门限集合。当第一终端设备检测到第二终端设备的传输模式为第一传输模式时，该第一终端设备在第一门限集合中确定该第一PSCCH-RSRP门限；当该第一终端设备检测到第二终端设备的传输模式为第二传输模式时，该第一终端设备在第二门限集合中确定该第一PSCCH-RSRP门限。
其中，可选地，第二门限集合中的PSCCH-RSRP门限，小于第一门限集合中的PSCCH-RSRP门限。
例如，该第二门限集合中的PSSCH-RSRP门限小于第一门限集合中对应于相同优先级信息的PSSCH-RSRP门限。
其中，该优先级信息包括该PSCCH中携带的优先级(ProSe Per-Packet Priority，PPPP)信息，以及该第一终端设备的待发送数据的优先级信息。
因此，在该第二终端设备的传输模式为第二传输模式时，通过降低用于进行资源选择的PSSCH-RSRP门限，从而保证对第二传输模式的终端设备占用的资源的保护，避免或降低对第二传输模式的终端设备的干扰。
为了方便理解，以一种极端的情况为例进行说明。由于第二门限集合中的 PSCCH-RSRP门限，小于第一门限集合中的PSCCH-RSRP门限，因此这里假设第二门限集合中的PSSCH-RSRP门限值都是负无穷大，即，当第一终端设备检测到第二终端设备的PSSCH指示第二传输模式时，该PSSCH指示的用于第二终端设备进行数据传输的资源或其预留的资源就会被排除在可用资源集合之外。
另外，当该第二终端设备的传输模式为第二传输模式时，通过设置有第二门限集合，并且第一终端设备需要将测量得到第一PSSCH-RSRP与第二门限集合中的该第一PSSCH-RSRP门限值进行比较从而确定可用资源集合，因此第一终端设备不会单纯的直接排除掉该第二终端设备占用和/或预留的资源，而是根据的测量得到的该第一PSSCH-RSRP与该第一PSSCH-RSR门限值的比较进行判断和排除，从而避免排除掉第一传输模式的只进行单次传输的终端设备的资源，提高了系统资源利用率。
通常，终端设备在资源侦听的过程中，通过检测PSCCH来判断资源使用情况，如果终端成功检测到PSCCH，会测量其对应的PSSCH信道的PSSCH-RSRP，并且将测量得到的PSSCH-RSRP与一个PSSCH-RSRP门限值比较，该门限值是由检测到的PSCCH中携带的优先级信息PPPP1，以及当前终端设备待传输数据的优先级信息PPPP2共同决定的。例如，在R14中总共定义了8个优先级信息，因此结合接收到的PSCCH中携带的优先级信息以及待发送数据的优先级信息，共有64种优先级信息的组合，这64种优先级组合分别对应着64个PSSCH-RSRP门限值。
若第一终端设备检测到该第二终端设备的传输模式为第一传输模式，则该第一终端设备可以根据接收到的第二终端设备的PSCCH中携带的优先级信息PPPP1与该第一终端设备的待发送数据的优先级信息PPPP2，在第一门限集合中的64个PSSCH-RSRP门限中，确定与优先级信息PPPP1和优先级信息PPPP2的优先级组合对应的该第一PSSCH-RSRP门限，并且测量得到的第一PSSCH-RSRP与该第一PSSCH-RSRP门限进行比较。
若第一终端设备检测到该第二终端设备的传输模式为第二传输模式，则该第一终端设备可以根据接收到的第二终端设备的PSCCH中携带的优先级信息PPPP1与该第一终端设备的待发送数据的优先级信息PPPP2，在第二门限集合中的64个PSSCH-RSRP门限中，确定与优先级信息PPPP1和优先级信息PPPP2的优先级组合对应的该第一PSSCH-RSRP门限，并且测量得到的第一PSSCH-RSRP与该第一PSSCH-RSRP门限进行比较。
其中，可选地，该第一门限集合和该第二门限集合可以为网络设备为该第一终端设备配置的，或者为预存在该第一终端设备中的例如协议规定的。
或者，可选地，该第一终端设备可以自行确定该第二门限集合，例如，该第一终端设备根据第一门限集合和门限偏移量，确定该第二门限集合。
其中，该第一门限集合例如可以是目前R14中使用的64个PSSCH-RSRP门限组成的门限集合。该门限偏移量例如可以为网络设备为该第一终端设备配置的，或者为预存在该第一终端设备中的例如协议中规定的。
方式2
可选地，该第一终端设备根据该第二终端设备的传输模式，确定第一PSSCH-RSRP门限，包括：
若该第二终端设备的传输模式为第一传输模式，则该第一终端设备在第一门限集合中确定该第一PSSCH-RSRP门限；
若该第二终端设备的传输模式为第二传输模式，该第一终端设备在第一门限集合中确定第二PSSCH-RSRP门限，并根据该第二PSSCH-RSRP门限和门限偏移量，确定该第一PSSCH-RSRP门限。
其中，可选地，该第一PSSCH-RSRP门限小于或等于该第二PSSCH-RSRP门限。
例如，若第一终端设备确定第二终端设备的传输模式为第二传输模式，该第一终端设备在第一门限集合中确定第二PSSCH-RSRP门限，第一终端设备根据该第二PSSCH-RSRP门限和门限偏移量，确定该第一PSSCH-RSRP门限为第二PSSCH-RSRP的值加上门限偏移量。
因此，在该第二终端设备的传输模式为第二传输模式时，通过降低用于进行资源选择的PSSCH-RSRP门限，从而保证对第二传输模式的终端设备占用的资源的保护，避免或降低对第二传输模式例如R14中的模式3的终端设备的干扰。
图5是本申请一个实施例的D2D通信中资源共享的方法的示意性流程图。图5所示的方法可以由第一终端设备执行，该第一终端设备例如可以为图2中所示的终端设备20或终端设备30。如图5所示，该D2D通信中资源共享的方法包括：
在510中，第一终端设备接收第二终端设备发送的PSCCH，该PSCCH中携带优先级信息，该第二终端设备为第二传输模式的终端设备。
其中，该第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的。
在520中，该第一终端设备根据该PSCCH中携带的该优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合。
具体地，第一终端设备检测到第二终端设备发送的PSCCH后，据该PSCCH确定该第二终端设备的传输模式，若该第二终端设备的传输模式为第二传输模式例如此时检测到的PSCCH中的资源预留位为0，则该第一终端设备根据该PSCCH中携带的优先级信息，将该优先级信息与一个优先级门限进行比较，从而确定能够用于数据传输的可用资源集合。
因此，通过设置优先级门限，第一终端设备根据第二终端设备的PSCCH中携带的优先级与该优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合，由于第二终端设备的PSCCH中携带的优先级不同时，第一终端设备确定的可用资源集合也不同，因此能够有针对性地对具有不同优先级的业务的传输进行保护，特别是降低对第二传输模式例如R14中的模式3的终端设备传输的高优先级业务的干扰。
其中，这里所述的可用资源集合，例如可以是关于图3的描述中所述的候选资源集合S_A，关于可用资源集合的相关描述，可以参考对候选资源集合S_A的描述，为了简洁，这里不再赘述。
可选地，该优先级门限为网络设备为该第一终端设备配置的，或者为预存在该第一终端设备中的。
可选地，该第一终端设备根据该优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：若该优先级信息表示的优先级高于该优先级门限，该第一终端设备确定该可用资源集合中不包括该第二终端设备占用和/或预留的传输资源。
可选地，在该第一终端设备根据该优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合之前，该方法还包括：该第一终端设备对该PSCCH对应的PSSCH的RSRP进行测量，得到第一PSCCH-RSRP；
其中，该第一终端设备根据该优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：若该优先级低于或等于该优先级门限，该第一终端设备根据该第一PSSCH-RSRP与PSSCH-RSRP门限之间的大小关系，确定该可用资源集合中是否包括该第二终端设备占用和预留的传输资源。
举例来说，假设优先级信息例如PPPP分为8个等级，其中优先级信息中的值越低，表示优先级越高。PPPP＝0表示最高优先级，PPPP＝7表示最低优先级。网络设备可以配置一个优先级门限，如PPPP＝4，当第一终端设备检测到第二传输模式的终端设备的PSCCH，并且该PSCCH中的优先级信息PPPP<4，则表示该第二终端设备待传输的数据的优先级高于配置的优先级门限，则该第一终端设备从可用资源集合中排除掉第二终端设备占用和/或预留的资源。因此，可以避免对第二传输模式例如R14中的模式3的终端设备传输的高优先级业务的干扰，并且避免排除掉第一传输模式的进行单次传输的终端设备的资源，从而提高系统资源利用率。
可选地，在520中，该第一终端设备根据该第一PSSCH-RSRP与该PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：
若第一PSSCH-RSRP大于该PSSCH-RSRP门限，且该第一终端设备选择和预留的传输资源，与该第二终端设备占用和/或预留的传输资源之间存在重叠，则该第一终端设备确定该可用资源集合中不包括该第二终端设备占用和预留的传输资源；
若该第一PSCCH-RSRP小于或等于该PSSCH-RSRP门限，则该第一终端设备确定该可用资源集合中包括该第二终端设备占用和预留的传输资源。
图6是根据本申请实施例的终端设备600的示意性框图。该终端设备600为第一终端设备，如图6所示，该第一终端设备600包括确定单元610和测量单元620。其中：
所述确定单元610，用于根据接收到的第二终端设备的物理侧行链路控制信道PSCCH，确定所述第二终端设备的传输模式；
所述确定单元610还用于，根据所述第二终端设备的传输模式，确定第一物理侧行共享信道参考信号接收功率PSSCH-RSRP门限；
测量单元620，用于对所述PSCCH对应的PSSCH的参考信号接收功率RSRP进行测量，得到第一PSCCH-RSRP；
所述确定单元610还用于，根据所述测量单元测量得到的所述第一PSSCH-RSRP与 所述第一PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合。
因此，第一终端设备根据第二终端设备的传输模式，确定PSCCH-RSRP门限，并将测量得到的PSCCH-RSRP门限与该PSCCH-RSRP门限比较，从而确定能够用于数据传输的可用资源集合，由于第一终端设备根据不同的传输模式确定的PSCCH-RSRP门限不同，因此能够有针对性地对不同传输模式的终端设备的数据传输进行保护，特别是降低对第二传输模式例如R14中的模式3的终端设备的干扰。
可选地，所述确定单元610具体用于：若所述第二终端设备的传输模式为第一传输模式，则所述第一终端设备在第一门限集合中确定所述第一PSSCH-RSRP门限，其中，所述第一传输模式的终端设备进行数据传输所使用的传输资源为基于资源侦听结果而自主选择的。
可选地，所述确定单元610具体用于：若所述第二终端设备的传输模式为第二传输模式，则所述第一终端设备在第二门限集合中确定所述第一PSSCH-RSRP门限，其中，所述第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的。
可选地，所述第二门限集合中的PSSCH-RSRP门限小于第一门限集合中对应于相同优先级信息的PSSCH-RSRP门限，其中，所述优先级信息包括：所述PSCCH中携带的优先级信息，和/或所述第一终端设备的待发送数据的优先级信息。
可选地，所述第一门限集合和所述第二门限集合为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
可选地，所述确定单元610还用于：根据第一门限集合和门限偏移量，确定所述第二门限集合。
可选地，所述确定单元610具体用于：若所述第二终端设备的传输模式为第二传输模式，所述第一终端设备在第一门限集合中确定第二PSSCH-RSRP门限；所述第一终端设备根据所述第二PSSCH-RSRP门限和门限偏移量，确定所述第一PSSCH-RSRP门限。
可选地，所述第一PSSCH-RSRP门限小于或等于所述第二PSSCH-RSRP门限。
可选地，所述门限偏移量为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
可选地，所述确定单元610具体用于：若所述第一PSSCH-RSRP大于所述第一PSSCH-RSRP门限，且所述第一终端设备选择和预留的传输资源，与所述第二终端设备占用和/或预留的传输资源之间存在重叠，则确定所述可用资源集合中不包括所述第二终端设备占用和预留的传输资源；若所述第一PSSCH-RSRP小于或等于所述第一PSSCH-RSRP门限，则确定所述可用资源集合中包括所述第二终端设备占用和预留的传输资源。
应理解，该终端设备600可以执行上述方法400中由第一终端设备执行的相应操作，为了简洁，在此不再赘述。
图7是根据本申请实施例的第一终端设备700的示意性框图。该终端设备700为第一终端设备。如图7所示，该第一终端设备700包括收发单元710和确定单元720。其中：
收发单元710，用于接收第二终端设备发送的物理侧行链路控制信道PSCCH，所述 PSCCH中携带优先级信息，所述第二终端设备为第二传输模式的终端设备，所述第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的；
确定单元720，用于根据所述收发单元710接收到的所述PSCCH中携带的所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合。
因此，通过设置优先级门限，第一终端设备根据第二终端设备的PSCCH中携带的优先级与该优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合，由于第二终端设备的PSCCH中携带的优先级不同时，第一终端设备确定的可用资源集合也不同，因此能够有针对性地对具有不同优先级的业务的传输进行保护，特别是降低对第二传输模式例如R14中的模式3的终端设备传输的高优先级业务的干扰。
可选地，所述确定单元720具体用于：若所述优先级高于所述优先级门限，则确定所述可用资源集合中不包括所述第二终端设备占用和/或预留的传输资源。
可选地，所述第一终端设备还包括测量单元，所述测量单元用于：对所述PSCCH对应的PSSCH的RSRP进行测量，得到第一PSCCH-RSRP；其中，所述确定单元720具体用于：若所述优先级低于或等于所述优先级门限，则根据所述第一PSSCH-RSRP与PSSCH-RSRP门限之间的大小关系，确定所述可用资源集合中是否包括所述第二终端设备占用和预留的传输资源。
可选地，所述确定单元720具体用于：若第一PSSCH-RSRP大于所述PSSCH-RSRP门限，且所述第一终端设备选择和预留的传输资源，与所述第二终端设备占用和/或预留的传输资源之间存在重叠，则确定所述可用资源集合中不包括所述第二终端设备占用和预留的传输资源；若所述第一PSCCH-RSRP小于或等于所述PSSCH-RSRP门限，则确定所述可用资源集合中包括所述第二终端设备占用和预留的传输资源。
可选地，所述优先级门限为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
应理解，该终端设备700可以执行上述方法500中由第一终端设备执行的相应操作，为了简洁，在此不再赘述。
图8是根据本申请实施例的终端设备800的示意性结构图。如图8所示，该终端设备包括处理器810、收发器820和存储器830，其中，该处理器810、收发器820和存储器830之间通过内部连接通路互相通信。该存储器830用于存储指令，该处理器810用于执行该存储器830存储的指令，以控制该收发器820接收信号或发送信号。
可选地，该处理器810可以调用存储器830中存储的程序代码，执行方法400中由第一终端设备执行的相应操作，为了简洁，在此不再赘述。
可选地，该处理器810可以调用存储器830中存储的程序代码，执行方法500中由第一终端设备执行的相应操作，为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal  Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本申请描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图9是本申请实施例的系统芯片的一个示意性结构图。图9的系统芯片900包括输入接口901、输出接口902、至少一个处理器903、存储器904，所述输入接口901、输出接口902、所述处理器903以及存储器904之间通过内部连接通路互相连接。所述处理器903用于执行所述存储器904中的代码。
可选地，当所述代码被执行时，所述处理器903可以实现方法400中由终端设备执行的相应操作。为了简洁，这里不再赘述。
可选地，当所述代码被执行时，所述处理器903可以实现方法500中由网络设备执行的相应操作。为了简洁，这里不再赘述。
应理解，在本发明实施例中，“与A相应(对应)的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认 为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，该单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (30)

  1. 一种资源共享的方法，其特征在于，所述方法包括：
    第一终端设备根据接收到的第二终端设备的物理侧行链路控制信道PSCCH，确定所述第二终端设备的传输模式；
    所述第一终端设备根据所述第二终端设备的传输模式，确定第一物理侧行共享信道参考信号接收功率PSSCH-RSRP门限；
    所述第一终端设备对所述PSCCH对应的PSSCH的参考信号接收功率RSRP进行测量，得到第一PSCCH-RSRP；
    所述第一终端设备根据所述第一PSSCH-RSRP与所述第一PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合。
  2. 根据权利要求1所述的方法，其特征在于，所述第一终端设备根据所述第二终端设备的传输模式，确定第一PSSCH-RSRP门限，包括：
    若所述第二终端设备的传输模式为第一传输模式，则所述第一终端设备在第一门限集合中确定所述第一PSSCH-RSRP门限，
    其中，所述第一传输模式的终端设备进行数据传输所使用的传输资源为基于资源侦听结果而自主选择的。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一终端设备根据所述第二终端设备的传输模式，确定第一PSSCH-RSRP门限，包括：
    若所述第二终端设备的传输模式为第二传输模式，则所述第一终端设备在第二门限集合中确定所述第一PSSCH-RSRP门限，
    其中，所述第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的。
  4. 根据权利要求3所述的方法，其特征在于，所述第二门限集合中的PSSCH-RSRP门限小于第一门限集合中对应于相同优先级信息的PSSCH-RSRP门限，其中，所述优先级信息包括：所述PSCCH中携带的优先级信息，和/或所述第一终端设备的待发送数据的优先级信息。
  5. 根据权利要求2至4中任一项所述的方法，其特征在于，所述第一门限集合和所述第二门限集合为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
  6. 根据权利要求2至4中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备根据第一门限集合和门限偏移量，确定所述第二门限集合。
  7. 根据权利要求1或2所述的方法，其特征在于，所述第一终端设备根据所述第二终端设备的传输模式，确定第一PSSCH-RSRP门限，包括：
    若所述第二终端设备的传输模式为第二传输模式，所述第一终端设备在第一门限集合中确定第二PSSCH-RSRP门限；
    所述第一终端设备根据所述第二PSSCH-RSRP门限和门限偏移量，确定所述第一PSSCH-RSRP门限。
  8. 根据权利要求7所述的方法，其特征在于，所述第一PSSCH-RSRP门限小于或等于所述第二PSSCH-RSRP门限。
  9. 根据权利要求6至8中任一项所述的方法，其特征在于，所述门限偏移量为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述第一终端设备根据所述第一PSSCH-RSRP与所述第一PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：
    若所述第一PSSCH-RSRP大于所述第一PSSCH-RSRP门限，且所述第一终端设备选择和预留的传输资源，与所述第二终端设备占用和/或预留的传输资源之间存在重叠，则所述第一终端设备确定所述可用资源集合中不包括所述第二终端设备占用和预留的传输资源；
    若所述第一PSSCH-RSRP小于或等于所述第一PSSCH-RSRP门限，则所述第一终端设备确定所述可用资源集合中包括所述第二终端设备占用和预留的传输资源。
  11. 一种资源共享的方法，其特征在于，所述方法包括：
    第一终端设备接收第二终端设备发送的物理侧行链路控制信道PSCCH，所述PSCCH中携带优先级信息，所述第二终端设备为第二传输模式的终端设备，所述第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的；
    所述第一终端设备根据所述PSCCH中携带的所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合。
  12. 根据权利要求11所述的方法，其特征在于，所述第一终端设备根据所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：
    若所述优先级高于所述优先级门限，所述第一终端设备确定所述可用资源集合中不包括所述第二终端设备占用和/或预留的传输资源。
  13. 根据权利要求11或12所述的方法，其特征在于，在所述第一终端设备根据所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合之前，所述方法还包括：
    所述第一终端设备对所述PSCCH对应的PSSCH的参考信号接收功率RSRP进行测量，得到第一物理侧行共享信道参考信号接收功率PSCCH-RSRP；
    其中，所述第一终端设备根据所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：
    若所述优先级低于或等于所述优先级门限，所述第一终端设备根据所述第一PSSCH-RSRP与PSSCH-RSRP门限之间的大小关系，确定所述可用资源集合中是否包括所述第二终端设备占用和预留的传输资源。
  14. 根据权利要求13所述的方法，其特征在于，所述第一终端设备根据所述第一PSSCH-RSRP与所述PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合，包括：
    若第一PSSCH-RSRP大于所述PSSCH-RSRP门限，且所述第一终端设备选择和预留的传输资源，与所述第二终端设备占用和/或预留的传输资源之间存在重叠，则所述第一终端设备确定所述可用资源集合中不包括所述第二终端设备占用和预留的传输资源；
    若所述第一PSCCH-RSRP小于或等于所述PSSCH-RSRP门限，则所述第一终端设备确定所述可用资源集合中包括所述第二终端设备占用和预留的传输资源。
  15. 根据权利要求11至14中任一项所述的方法，其特征在于，所述优先级门限为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
  16. 一种终端设备，其特征在于，所述终端设备为第一终端设备，所述第一终端设备包括：
    确定单元，用于根据接收到的第二终端设备的物理侧行链路控制信道PSCCH，确定所述第二终端设备的传输模式；
    所述确定单元还用于，根据所述第二终端设备的传输模式，确定第一物理侧行共享信道参考信号接收功率PSSCH-RSRP门限；
    测量单元，用于对所述PSCCH对应的PSSCH的参考信号接收功率RSRP进行测量，得到第一PSCCH-RSRP；
    所述确定单元还用于，根据所述测量单元测量得到的所述第一PSSCH-RSRP与所述第一PSSCH-RSRP门限之间的大小关系，确定能够用于数据传输的可用资源集合。
  17. 根据权利要求16所述的终端设备，其特征在于，所述确定单元具体用于：
    若所述第二终端设备的传输模式为第一传输模式，则所述第一终端设备在第一门限集合中确定所述第一PSSCH-RSRP门限，
    其中，所述第一传输模式的终端设备进行数据传输所使用的传输资源为基于资源侦听结果而自主选择的。
  18. 根据权利要求16或17所述的终端设备，其特征在于，所述确定单元具体用于：
    若所述第二终端设备的传输模式为第二传输模式，则所述第一终端设备在第二门限集合中确定所述第一PSSCH-RSRP门限，
    其中，所述第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的。
  19. 根据权利要求18所述的终端设备，其特征在于，所述第二门限集合中的PSSCH-RSRP门限小于第一门限集合中对应于相同优先级信息的PSSCH-RSRP门限，其中，所述优先级信息包括：所述PSCCH中携带的优先级信息，和/或所述第一终端设备的待发送数据的优先级信息。
  20. 根据权利要求17至19中任一项所述的终端设备，其特征在于，所述第一门限集合和所述第二门限集合为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
  21. 根据权利要求17至19中任一项所述的终端设备，其特征在于，所述确定单元还用于：
    根据第一门限集合和门限偏移量，确定所述第二门限集合。
  22. 根据权利要求16或17所述的终端设备，其特征在于，所述确定单元具体用于：
    若所述第二终端设备的传输模式为第二传输模式，所述第一终端设备在第一门限集合中确定第二PSSCH-RSRP门限；
    所述第一终端设备根据所述第二PSSCH-RSRP门限和门限偏移量，确定所述第一PSSCH-RSRP门限。
  23. 根据权利要求22所述的终端设备，其特征在于，所述第一PSSCH-RSRP门限小于或等于所述第二PSSCH-RSRP门限。
  24. 根据权利要求21至23中任一项所述的终端设备，其特征在于，所述门限偏移量为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
  25. 根据权利要求16至24中任一项所述的终端设备，其特征在于，所述确定单元具体用于：
    若所述第一PSSCH-RSRP大于所述第一PSSCH-RSRP门限，且所述第一终端设备选择和预留的传输资源，与所述第二终端设备占用和/或预留的传输资源之间存在重叠，则确定所述可用资源集合中不包括所述第二终端设备占用和预留的传输资源；
    若所述第一PSSCH-RSRP小于或等于所述第一PSSCH-RSRP门限，则确定所述可用资源集合中包括所述第二终端设备占用和预留的传输资源。
  26. 一种终端设备，其特征在于，所述终端设备为第一终端设备，所述第一终端设备包括：
    收发单元，用于接收第二终端设备发送的物理侧行链路控制信道PSCCH，所述PSCCH中携带优先级信息，所述第二终端设备为第二传输模式的终端设备，所述第二传输模式的终端设备进行数据传输所使用的传输资源为网络设备调度的；
    确定单元，用于根据所述收发单元接收到的所述PSCCH中携带的所述优先级信息所表示的优先级与优先级门限之间的大小关系，确定能够用于数据传输的可用资源集合。
  27. 根据权利要求26所述的终端设备，其特征在于，所述确定单元具体用于：
    若所述优先级高于所述优先级门限，则确定所述可用资源集合中不包括所述第二终端设备占用和/或预留的传输资源。
  28. 根据权利要求26或27所述的终端设备，其特征在于，所述第一终端设备还包括测量单元，所述测量单元用于：
    对所述PSCCH对应的PSSCH的参考信号接收功率RSRP进行测量，得到第一物理侧行共享信道参考信号接收功率PSCCH-RSRP；
    其中，所述确定单元具体用于：
    若所述优先级低于或等于所述优先级门限，则根据所述第一PSSCH-RSRP与PSSCH-RSRP门限之间的大小关系，确定所述可用资源集合中是否包括所述第二终端设备占用和预留的传输资源。
  29. 根据权利要求28所述的终端设备，其特征在于，所述确定单元具体用于：
    若第一PSSCH-RSRP大于所述PSSCH-RSRP门限，且所述第一终端设备选择和预留的传输资源，与所述第二终端设备占用和/或预留的传输资源之间存在重叠，则确定所 述可用资源集合中不包括所述第二终端设备占用和预留的传输资源；
    若所述第一PSCCH-RSRP小于或等于所述PSSCH-RSRP门限，则确定所述可用资源集合中包括所述第二终端设备占用和预留的传输资源。
  30. 根据权利要求26至29中任一项所述的终端设备，其特征在于，所述优先级门限为网络设备为所述第一终端设备配置的，或者为预存在所述第一终端设备中的。
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