WO2018053694A1 - 设备到设备中终端设备的通信方法、终端设备和网络设备 - Google Patents

设备到设备中终端设备的通信方法、终端设备和网络设备 Download PDF

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Publication number
WO2018053694A1
WO2018053694A1 PCT/CN2016/099503 CN2016099503W WO2018053694A1 WO 2018053694 A1 WO2018053694 A1 WO 2018053694A1 CN 2016099503 W CN2016099503 W CN 2016099503W WO 2018053694 A1 WO2018053694 A1 WO 2018053694A1
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WIPO (PCT)
Prior art keywords
terminal device
information
target resource
communication
terminal
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PCT/CN2016/099503
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English (en)
French (fr)
Inventor
杨宁
唐海
Original Assignee
广东欧珀移动通信有限公司
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.)
Filing date
Publication date
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to EP16916435.7A priority Critical patent/EP3445112B1/en
Priority to CN201680085531.2A priority patent/CN109076547B/zh
Priority to US16/304,131 priority patent/US10701749B2/en
Priority to PCT/CN2016/099503 priority patent/WO2018053694A1/zh
Priority to TW106129479A priority patent/TWI684381B/zh
Publication of WO2018053694A1 publication Critical patent/WO2018053694A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Definitions

  • Embodiments of the present invention relate to the field of Internet of Things, and more particularly, to a communication method, a terminal device, and a network device of a device to a device in the device D2D.
  • LTE Long Term Evolution
  • D2D Device to Device
  • the embodiments of the present invention provide a communication method, a terminal device, and a network device of a device in the device to the device D2D, which can flexibly allocate communication resources, thereby improving utilization of spectrum resources.
  • the first aspect provides a communication method of a device to a terminal device in the device D2D, including:
  • the first terminal device performs D2D communication by using the target resource according to the information of the at least one second terminal device.
  • the information of the at least one second terminal device includes at least one of the following:
  • Each of the at least one second terminal device uses information of the target resource, interference capability information of each of the second terminal devices, and location information of each of the second terminal devices.
  • the information that the second terminal device uses the target resource includes resource block occupation information of the target resource used by each second terminal device, and the second terminal device uses the target resource to transmit Information on the maximum transmit power that can be used; or,
  • the interference capability information of each of the second terminal devices includes: a maximum interference that each of the second terminal devices can tolerate.
  • the “resource block occupation information” may be: the time-frequency location information, the resource block number information, the identification information, and the like, which are occupied by the terminal device in the resource block of the target resource, and are not limited thereto.
  • the resource block occupation information is used to indicate the usage of the resource block of the target resource, and whether or not to reuse may be determined according to the usage of the resource block. For example, if a numbered resource block is already occupied, the occupied resource block is not used when selecting the target resource multiplexing; or, if the resource block is not occupied or the resource block utilization is in a certain time-frequency location If there are few, the resource block can be selected for multiplexing, which is not limited.
  • the first terminal device can perform the D2D communication by using the target resource according to the information of the at least one second terminal device by using the information of the at least one second terminal device that uses the target resource, and can flexibly allocate the communication. Resources, thereby increasing the utilization of spectrum resources.
  • the information of the at least one second terminal device includes related information for indicating whether the transmission resources of the one or more second terminal devices to be multiplexed can be multiplexed.
  • the at least one terminal device performs D2D communication with the target resource, and/or communicates with the network device.
  • “information of at least one second terminal device” may include one or more resource block usage conditions or resource block occupation number information of the second terminal device, one or more The location information of the second terminal device, the minimum communication demand signal and the signal to interference plus noise ratio (SINR) information of the one or more second terminal devices, and the minimum reference signal receiving power (Reference Signal Receiving) At least one of Power, RSRP) information, information of one or more maximum tolerable interference strength information of the second terminal device, and the like.
  • SINR signal to interference plus noise ratio
  • RSRP Reference Signal Receiving
  • the target resource that is, the transmission resource to be multiplexed
  • the target resource may be an uplink or downlink transmission resource of the second terminal device, for example, the transmission resource may be specifically a resource block (RB) or Other forms.
  • RB resource block
  • the first terminal device and the second terminal device may be the same type of terminal device (such as the first terminal device and the second terminal device are both vehicle user devices), or may be different types.
  • the terminal device for example, the first terminal device is a vehicle user device, and the second terminal device is a cellular user device, which is not limited thereto.
  • the information of the at least one second terminal device may be sent by the network device to the first terminal device, or may be obtained by the first terminal device itself (such as the first The terminal device is directly acquired from the second terminal device).
  • the first terminal device may communicate with the transmission resource of the second terminal device in a manner of power control.
  • one first terminal device may multiplex transmission resources of multiple second terminal devices.
  • the plurality of first terminal devices may multiplex the transmission resources of one second terminal device.
  • there is no upper limit on the number of terminal devices that multiplex the same resource block and there is no upper limit on the number of resource blocks multiplexed by the same terminal device, which is not limited.
  • the maximum number of multiplexed resource blocks or the number of terminal devices can also be set for resource allocation, which is not limited.
  • the method before the communication is performed by using the transmission resource of the second terminal device, the method may further include:
  • the first terminal device determines whether the transmission resource of the second terminal device is used by another terminal device.
  • the first terminal device may first determine whether the transmission resource of the second terminal device is used by other terminal devices.
  • the other terminal device may be the first terminal device or the second terminal device, which is not limited thereto.
  • the purpose of the judgment is that the user equipments that use the same transmission resource may interfere with each other. If the interference is serious, the communication may be interrupted.
  • the first terminal device may decide whether to multiplex the transmission resources of the second terminal device according to the specific situation of the determination, so as to ensure that other terminal devices that are using the transmission resources of the second terminal device can maintain the communication.
  • the first terminal device performs device-to-device D2D communication by using the target resource according to the information of the at least one second terminal device, including:
  • the first terminal device performs communication by using the target resource according to the maximum transmission power.
  • the first terminal device performs communication by using the target resource according to the maximum transmit power, including:
  • the first terminal device When the maximum transmit power is greater than the minimum transmit power of the first terminal device capable of meeting the communication requirement, the first terminal device performs D2D communication by using the target resource.
  • the first terminal device communicates by using the target resource, including:
  • the first terminal device determines a transmission power P, where the transmission power P satisfies min(P rest , P max )>P>P min , where P max is the maximum transmission power, P min is the minimum transmission power, and P rest is The current remaining transmit power of the first terminal device;
  • the first terminal device performs D2D communication by using the target resource according to the transmission power P.
  • the first terminal device can flexibly allocate the communication resource by using the information of the at least one second terminal device to determine the D2D communication by using the target resource according to the information of the at least one second terminal device, thereby improving the allocation of the communication resource. Utilization of spectrum resources. Further, the first terminal device can communicate using the transmission resource of the second terminal device in a power control manner.
  • the method when the transmission resource of the second terminal device is used by multiple second terminal devices or other terminal devices, the method further includes:
  • the first terminal device acquires interference information of the plurality of second terminal devices, where the interference information of the plurality of second terminal devices includes information indicating a tolerable interference capability of the plurality of terminal devices, and the plurality of second terminals At least one of information of a transmission resource used by the device and location information of the plurality of second terminal devices;
  • the first terminal device performs communication by using the target resource according to the maximum transmit power, including:
  • the first terminal device When the minimum value of the maximum transmit power and the maximum transmit power of the L second terminal devices is greater than the minimum transmit power, the first terminal device performs D2D communication by using the target resource, where the L maximum transmissions The powers respectively indicate the maximum transmission power that the first to L second terminal devices can use when using the target resource.
  • the first terminal device communicates by using the target resource, including:
  • the first terminal device determines a transmission power P that satisfies min(P rest , P max , P max1 , P max2 , . . . , P maxL )>P>P min , where P max is the maximum transmission power, P min for the minimum transmission power, L ⁇ 1, that P max1, P max2, ..., P maxL indicate the maximum transmit power to L-th second terminal device 1, P rest for a first terminal The current remaining transmit power of the device;
  • the first terminal device performs D2D communication by using the target resource according to the transmission power P.
  • the method further includes:
  • the first terminal device can flexibly allocate the communication resource by using the information of the at least one second terminal device to determine the D2D communication by using the target resource according to the information of the at least one second terminal device, thereby improving the allocation of the communication resource. Utilization of spectrum resources. Further, the first terminal device can communicate using the transmission resources of the second terminal device in a power control manner, and at the same time, ensure that other terminal devices using the transmission resources of the second terminal device can communicate.
  • the method further includes:
  • the first terminal device updates the current remaining transmit power Prest of the first terminal device according to the transmit power.
  • updating the current remaining transmit power P rest of the first terminal device according to the transmit power includes:
  • the first terminal device determines the current remaining transmit power of the first terminal device according to the following update formula:
  • the update formula indicates that the first terminal device subtracts the transmit power P using the current remaining transmit power P′ rest after communicating using the target resource.
  • the first terminal device may update its current remaining transmit power after each use of the target resource communication, so as to flexibly control whether to use the target resource.
  • the second aspect provides a communication method of a device to a terminal device in the device D2D, including:
  • the network device determines information of the at least one second terminal device, where the information of the at least one second terminal device is used by the first terminal device to determine the target resource used;
  • the network device sends the information of the at least one second terminal device to the first terminal device.
  • the network device determines the information of the at least one second terminal device, the information of the at least one second terminal device is used by the first terminal device to determine the target resource used, and sends the transmission to the first terminal device.
  • the resource control information so that the first terminal device uses the transmission resource of the second terminal device to perform communication according to the information of the at least one second terminal device, Flexible allocation of communication resources, thereby increasing the utilization of spectrum resources.
  • the information of the at least one second terminal device includes at least one of the following:
  • Each of the at least one second terminal device uses information of the target resource, interference capability information of each of the second terminal devices, and location information of each of the second terminal devices.
  • the information that the second terminal device uses the target resource includes resource block occupation information of the target resource used by each second terminal device, and the second terminal device uses the target resource to transmit Information on the maximum transmit power that can be used; or,
  • the interference capability information of each of the second terminal devices includes: a maximum interference that each of the second terminal devices can tolerate.
  • the network device determines information about the at least one second terminal device, including:
  • the network device Determining, by the network device, the tolerable interference capability information of the second terminal device according to the location information of the second terminal device, the minimum communication requirement information of the second terminal device, and the resource usage information of the second terminal device, where the second device
  • the information of the terminal device includes the tolerable interference capability information.
  • a terminal device for performing the method of any of the above first aspect or any of the possible implementations of the first aspect.
  • the apparatus comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • a network device for performing the method of any of the foregoing second aspect or any of the possible implementations of the second aspect.
  • the apparatus comprises means for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.
  • a terminal device in a fifth aspect, includes a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
  • a network device in a sixth aspect, includes a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.
  • a computer readable storage medium storing a program causing a terminal device to perform the first aspect described above, and various implementations thereof Any method of communication from a device to a terminal device in device D2D.
  • a computer readable storage medium storing a program causing a network device to perform the second aspect described above, and any one of its various implementations, to device D2D The communication method of the terminal device.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for communicating a device to a terminal device in the device D2D according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an example of communication of a device to a terminal device in device D2D, in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for communicating a device to a terminal device in the device D2D according to another embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 6 is a schematic block diagram of a network device according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a terminal device according to another embodiment of the present invention.
  • FIG. 8 is a structural diagram of a network device according to another embodiment of the present invention.
  • D2D Device to Device
  • V2V vehicle to vehicle
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunications System
  • the network device may also be referred to as a base station or a network side device, and the base station may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA.
  • BTS Base Transceiver Station
  • NodeB base station
  • the present invention is not limited to this, and may be an evolved Node B (eNB or eNodeB) in LTE, or a base station device in a future 5G network.
  • the terminal device may communicate with one or more core networks through a Radio Access Network (RAN), and the terminal device may be referred to as an access terminal and a user.
  • RAN Radio Access Network
  • UE User Equipment
  • subscriber unit subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment.
  • the terminal device can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and a wireless communication function.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device may include a D2D device, a Cellular User Equipment (CUE), a Vehicle User Equipment (VUE), and the like.
  • CUE Cellular User Equipment
  • VUE Vehicle User Equipment
  • FIG. 1 is a schematic diagram of a scene. It should be understood that, for ease of understanding, the scenario in FIG. 1 is introduced as an example, but the present invention is not limited.
  • Base station 10, cellular user equipment 11, vehicle user equipment 21, vehicle user equipment 22, vehicle user equipment 31, vehicle user equipment 32, vehicle user equipment 41, vehicle user equipment 42 are shown in FIG.
  • the vehicle user equipment 21 and the vehicle user equipment 22, the vehicle user equipment 31 and the vehicle user equipment 32, the vehicle user equipment 41 and the vehicle user equipment 42 are respectively three pairs of vehicle user equipment pairs for short-range communication.
  • Representing the transmission signal of the cellular user equipment 11 Representing a communication signal between pairs of vehicle user equipment, Representing the interference of the communication signal of the cellular user equipment 11 with the communication signal of the vehicle user equipment pair, Representing the interference of the communication signal of the vehicle user equipment pair with the communication signal of the cellular user equipment 11, Represents mutual interference between communication signals of a vehicle user equipment pair.
  • the vehicle user equipment pair in FIG. 1 may be a communication pair composed of a vehicle and a vehicle, and may also be a communication pair composed of a vehicle and a device, which is not limited thereto.
  • FIG. 1 is an example of a cellular user equipment, and the number thereof may be multiple, which is not limited thereto.
  • the vehicle user equipment pair in FIG. 1 may also be multiple, and is not limited to three pairs in the figure.
  • the vehicle user equipment pairs in the figure do not necessarily appear in pairs, and there is no limitation thereto.
  • the vehicle user equipment may be a vehicle to X (Vehicle to X, V2X) device, or a D2D communication device, which is not limited thereto.
  • vehicle to X Vehicle to X, V2X
  • D2D communication device which is not limited thereto.
  • the cellular user equipment in FIG. 1 may also be a vehicle user equipment, which is not limited thereto.
  • cellular user equipment 11 can communicate with base station 10
  • vehicle user equipment 21 can communicate with vehicle user equipment 22
  • vehicle user equipment 31 can communicate with vehicle user equipment 32
  • vehicle user equipment 41 can be associated with vehicle User equipment 42 communicates.
  • the uplink or downlink resources of the cellular user equipment 11 may be used.
  • the transmission resource of one cellular user equipment can only be used by one vehicle user equipment pair, or one vehicle user equipment pair can only use one cellular user equipment transmission resource, so that the cellular user equipment
  • the reuse of transmission resources is not flexible enough to fully utilize resources, resulting in performance loss. Therefore, the terminal device of the present patent attempts to flexibly multiplex transmission resources according to information of at least one second terminal device. For example, if the communication method of the device in the device to the terminal device in the device D2D is adopted, the plurality of vehicle user devices in FIG. 1 may multiplex a resource block (RB) of the cellular user device, or a pair of vehicle user devices may Multiple resource blocks of multiple cellular user equipments are multiplexed.
  • RB resource block
  • FIG. 2 shows a schematic flow chart of a communication method 200 of a device to a terminal device in device D2D according to an embodiment of the present invention.
  • the method 200 can be performed by a first terminal device, such as by a vehicle user device of FIG. 1, which can be the vehicle user device 21, the vehicle user device 22, the vehicle user device 31, the vehicle user device 32 of FIG. Vehicle user equipment 41 or vehicle user equipment 42.
  • the method 200 includes:
  • the first terminal device determines information about the at least one second terminal device that uses the target resource.
  • the information of the at least one second terminal device includes at least one of the following:
  • Each of the at least one second terminal device uses information of the target resource, interference capability information of each of the second terminal devices, and location information of each of the second terminal devices.
  • the information that the second terminal device uses the target resource includes resource block occupation information of the target resource used by each second terminal device, and the second terminal device uses the target resource to transmit Information on the maximum transmit power that can be used; or,
  • the interference capability information of each of the second terminal devices includes: a maximum interference that each of the second terminal devices can tolerate.
  • the “resource block occupation information” may be: the time-frequency location information, the resource block number information, the identification information, and the like, which are occupied by the terminal device in the resource block of the target resource, and are not limited thereto.
  • the resource block occupation information is used to indicate the usage of the resource block of the target resource, and whether or not to reuse may be determined according to the usage of the resource block. For example, if a numbered resource block is already occupied, the occupied resource block is not used when selecting the target resource multiplexing; or, if the resource block is not occupied or the resource block utilization is in a certain time-frequency location If there are few, the resource block can be selected for multiplexing, which is not limited.
  • the first terminal device when it has a communication requirement, it may try to multiplex the transmission resource of a certain terminal device.
  • the transmission resource ie, the target resource
  • the information of the second terminal device needs to be acquired or determined to determine whether the transmission resource of the second terminal device can be multiplexed.
  • the information of the at least one second terminal device includes related information for indicating whether one or more second terminal devices to be multiplexed can be multiplexed.
  • the “target resource” indicates the transmission resource of the at least one second terminal device to be multiplexed or used by the first terminal device.
  • the “target resource” may be an uplink or downlink transmission resource of the second terminal device, for example, the transmission resource may be specifically in the form of an RB or other resources.
  • the “information of the at least one second terminal device” may include resource block usage or resource block occupancy information of the one or more second terminal devices, and location information of the one or more second terminal devices.
  • Minimum or one of the second terminal equipment Signal to Interference plus Noise Ratio (SINR) information, minimum reference At least one of information such as Reference Signal Receiving Power (RSRP) information, one or more maximum tolerable interference strength information of the second terminal device, and the like.
  • SINR Signal to Interference plus Noise Ratio
  • RSRP Reference Signal Receiving Power
  • the second terminal device may be the cellular user equipment in FIG.
  • the second terminal device may also be the vehicle user equipment in FIG.
  • the vehicle user equipment can multiplex the uplink or downlink resources of the cellular user equipment, and can also reuse the communication resources of other vehicle user equipment pairs, which is not limited.
  • the information of the at least one second terminal device may be sent by the network device to the first terminal device.
  • the base station 10 grasps location information, minimum communication requirement SINR information, resource block occupancy information, and the like of the plurality of cellular user equipments 11.
  • the base station 10 can calculate the maximum tolerable interference strength of each cellular user equipment 11 according to the signal strength and minimum communication demand SINR of each cellular user equipment 11, and then calculate and/or calculate multiple cellular user equipments that are mastered and/or calculated.
  • the information is sent to the vehicle user equipment having communication requirements in the form of a broadcast, so that the vehicle user equipment selects the transmission resources of the cellular user equipment for multiplexing.
  • the information of the at least one second terminal device may also be obtained by the first terminal device (for example, the first terminal device directly acquires from the second terminal device), which is not limited thereto.
  • first terminal device and the “second terminal device” are introduced for convenience of description only, and the present invention is not specifically limited.
  • the first terminal device and the second terminal device may be the same type of terminal device (for example, the first terminal device and the second terminal device are both vehicle user devices), or may be different types.
  • the terminal device for example, the first terminal device is a vehicle user device, and the second terminal device is a cellular user device, which is not limited thereto.
  • the first terminal device uses the target resource to perform communication according to the information of the at least one second terminal device.
  • the first terminal device may (determine) use the target resource according to the acquired information of the at least one second terminal device, for example, one or more second terminals.
  • the transmission resource of the device communicates.
  • the first terminal device may perform communication by using the transmission resource of the second terminal device in a manner of power control.
  • the distance between the second terminal device and the second terminal device may be obtained according to the location information, and then the distance and the capacity may be After enduring the interference information, calculate its maximum transmission power.
  • the first terminal device can calculate its own minimum transmission power according to its own minimum communication requirement (such as SINR value and/or RSRP, etc.).
  • the first terminal device selects the appropriate power in combination with the maximum transmit power and the minimum transmit power, and uses the transmission resources of the second terminal device to communicate according to the suitable power.
  • a first terminal device may multiplex transmission resources of multiple second terminal devices.
  • the plurality of first terminal devices may multiplex the transmission resources of one second terminal device.
  • there is no upper limit on the number of terminal devices that multiplex the same resource block and there is no upper limit on the number of resource blocks multiplexed by the same terminal device, which is not limited.
  • the maximum number of multiplexed resource blocks or the number of terminal devices can also be set for resource allocation, which is not limited.
  • the first terminal device can perform the D2D communication by using the target resource according to the information of the at least one second terminal device by using the information of the at least one second terminal device that uses the target resource, and can flexibly allocate the communication. Resources, thereby increasing the utilization of spectrum resources.
  • the at least one terminal device performs D2D communication with the target resource, and/or communicates with the network device.
  • the method 200 may further include:
  • the first terminal device determines whether the transmission resource of the second terminal device is used by another terminal device.
  • the first terminal device may determine whether the transmission resource of the second terminal device is used by another terminal device before multiplexing the transmission resource of the second terminal device.
  • the other terminal device may be the first terminal device or the second terminal device, which is not limited thereto.
  • the purpose of the judgment is that the user equipments that use the same transmission resource may interfere with each other. If the interference is serious, the communication may be interrupted.
  • the first terminal device may decide whether to multiplex the transmission resources of the second terminal device according to the specific situation of the determination, so as to ensure that other terminal devices that are using the transmission resources of the second terminal device can maintain the communication.
  • the first terminal device uses the target resource according to the information of the at least one second terminal device.
  • Device-to-device D2D communication including:
  • the first terminal device performs communication by using the target resource according to the maximum transmission power.
  • the first terminal device determines that the transmission resource of the second terminal device is used by only one second terminal device, and when no other terminal device is multiplexed, the first terminal device may calculate and calculate according to the location information of the second terminal device. The distance of the second terminal device. Then, the first terminal device determines, according to the distance from the second terminal device, the information of the tolerable interference capability of each second terminal device, and the like, the maximum transmission power when the second terminal device is multiplexed (if the first terminal device is higher than The maximum transmission power, the interference is large, which will affect the communication of the second terminal device). Finally, the first terminal device communicates with the target resource according to the maximum transmit power. In this way, when the first terminal device communicates using the target resource, the communication of the second terminal device is not affected.
  • the first terminal device performs communication by using the target resource according to the maximum transmit power, including:
  • the first terminal device When the maximum transmit power is greater than the minimum transmit power of the first terminal device capable of meeting the communication requirement, the first terminal device performs D2D communication by using the target resource.
  • the target resource is used for D2D communication.
  • the first terminal device communicates by using the target resource, including:
  • the first terminal device determines a transmission power P, where the transmission power P satisfies min(P rest , P max )>P>P min , where P max is the maximum transmission power, P min is the minimum transmission power, and P rest is The current remaining transmit power of the first terminal device;
  • the first terminal device performs D2D communication by using the target resource according to the transmission power P.
  • the first terminal device may determine the transmission power P, and if the P meets the preset condition, the target resource may be used to communicate according to the P. For example, the transmit power P satisfies a preset condition min(P rest , P max )>P>P min , where P max is the maximum transmit power, P rest is the current remaining transmit power of the first terminal device, P min For this minimum transmit power. In addition, the remaining transmission power of the first terminal device satisfies P rest >P min .
  • the method further includes:
  • the first terminal device updates the current remaining transmit power Prest of the first terminal device according to the transmit power.
  • updating the current remaining transmit power P rest of the first terminal device according to the sending power including:
  • the first terminal device determines the current remaining transmit power of the first terminal device according to the following update formula:
  • the update formula indicates that the first terminal device subtracts the transmit power P using the current remaining transmit power P′ rest after communicating using the target resource.
  • the first terminal device can calculate the minimum transmission power Pmin according to its minimum communication requirement SINR (if the communication of the first terminal device is not guaranteed below this value).
  • the first terminal device calculates its own maximum transmission power P max according to the distance from the second terminal device (if When the value is higher than this, the interference of the first terminal device to the second terminal device is too large, which may affect the communication of the second terminal device.
  • the first terminal device abandons multiplexing the transmission resources of the second terminal device.
  • the first terminal device may continue to detect the usage of the transmission resources of the other terminal devices, and repeat the foregoing steps.
  • the first terminal device can flexibly allocate the communication resource by using the information of the at least one second terminal device to determine the D2D communication by using the target resource according to the information of the at least one second terminal device, thereby improving the allocation of the communication resource. Utilization of spectrum resources. Further, the first terminal device can communicate using the transmission resource of the second terminal device in a power control manner.
  • the transmission resource of the second terminal device when the transmission resource of the second terminal device has been used by the multiple second terminal devices (or other terminal devices), the same applies to the embodiment of the present invention. This situation is similar to the case where the transmission resource of the second terminal device is used only by the second terminal device. For the sake of brevity, some similar operations that need to be performed are not described in detail.
  • the method may further include:
  • the first terminal device acquires information of the L second terminal devices, where the information of the other terminal device includes information indicating the tolerable interference capability of the L second terminal devices, and the L second terminal devices use And transmitting at least one of information of the resource and location information of the L second terminal devices.
  • the first terminal device when the first terminal device determines that the transmission resource of the second terminal device is not only used by the second terminal device, but also by other terminal devices (for example, multiple vehicle user device pairs in FIG. 1), for example When the L second terminal devices are occupied, the first terminal device needs to consider some factors of other terminal devices (such as interference information of other terminal devices, etc.) when determining the transmission power.
  • the first terminal device may acquire interference information of other terminal devices (such as information of tolerable interference capability of other terminal devices, occupied resource block information, location information, signal strength information, etc.).
  • the first terminal device determines the transmission power according to the information indicating the tolerable interference capability of the second terminal device, the transmission resource usage information of the second terminal device, the interference information of other terminal devices, and the like. Similarly, the first terminal device needs to update its remaining transmit power, and when the relationship between the transmit power and its current remaining transmit power meets a preset condition, the communication resource of the second terminal device is used for communication. It should be understood that the other terminal device may be the first terminal device or the second terminal device, which is not limited thereto.
  • terminal devices such as L second terminal devices that have occupied certain resource blocks can calculate their own tolerable according to their own communication signal strength, received signal interference strength, and minimum communication demand SINR.
  • the intensity of the interference may further receive interference information (such as information that can tolerate interference capability) occupied by other terminal devices (ie, terminal devices that have occupied certain resource blocks) to the first terminal device. Resource block information, location information, signal strength information, etc.).
  • the first terminal device performs communication by using the target resource according to the maximum transmit power, including:
  • the first terminal device When the minimum value of the maximum transmit power and the maximum transmit power of the L second terminal devices is greater than the minimum transmit power, the first terminal device performs D2D communication by using the target resource.
  • the first terminal device communicates by using the target resource, including:
  • the first terminal device determines a transmission power P that satisfies min(P rest , P max , P max1 , P max2 , . . . , P maxL )>P>P min , where P max is the maximum transmission power, P min for the minimum transmission power, L ⁇ 1, that P max1, P max2, ..., P maxL indicate the maximum transmit power to L-th second terminal device 1, P rest for a first terminal The current remaining transmit power of the device;
  • the first terminal device performs D2D communication by using the target resource according to the transmission power P.
  • the first terminal device selects the mode of the transmission power P, and the transmission resource of the second terminal device is only used by the second terminal.
  • the situation occupied by the device is similar.
  • the difference is that in the preset condition that the transmission power P is satisfied, the influence of the communication of the L second terminal devices on the first terminal device needs to be considered.
  • the preset condition min P rest , P max , P max1 , P max2 , . . .
  • P maxL >P>P min affects the condition of the maximum transmission power of the L second terminal devices, and the P max1, P max2, ..., P maxL represent the maximum transmission power that may be employed in the use of the L of the target resource to the second terminal of the first device, L represents the number of L second terminal device.
  • the first terminal device can flexibly allocate the communication resource by using the information of the at least one second terminal device to determine the D2D communication by using the target resource according to the information of the at least one second terminal device, thereby improving the allocation of the communication resource. Utilization of spectrum resources. Further, the first terminal device can communicate using the transmission resources of the second terminal device in a power control manner, and at the same time, ensure that other terminal devices using the transmission resources of the second terminal device can communicate.
  • FIG. 3 is a diagram showing an example of a communication method of a device to a terminal device in a device according to an embodiment of the present invention. It is to be understood that the introduction of FIG. 3 is intended to facilitate the understanding of the embodiments of the invention by those skilled in the art and is not intended to limit the invention. As shown in Figure 3, it includes:
  • the base station allocates spectrum resources to the cellular user equipment.
  • the base station grasps the location information of all cellular user equipments, and can allocate spectrum resources to each cellular user equipment.
  • the spectrum resources used between the cellular user equipments are orthogonal and independent, that is, the spectrum resources between the cellular user equipments do not interfere with each other. For example, suppose that there are N CUE users in the system, which respectively occupy N independent orthogonal resource blocks RB. Here, with a certain cellular user equipment The example is explained.
  • the vehicle user equipment detects an interference level of the received multiplexing resource block.
  • the vehicle user equipment When the vehicle user equipment has communication requirements, it may try to multiplex the transmission resources of a certain cellular user equipment. When attempting to multiplex a resource block, the vehicle user equipment may first detect the interference level of the received cellular user equipment to determine whether the resource block can be multiplexed. Optionally, the interference level of the cellular user equipment may be sent by the base station by using a broadcast.
  • the vehicle user equipment calculates a minimum transmission power Pmin .
  • the vehicle user equipment can calculate the minimum transmission power Pmin according to the minimum communication requirement SINR or RSRP, etc., wherein Pmin means that the communication of the vehicle user equipment cannot be guaranteed below this value.
  • the vehicle user equipment receives information of at least one cellular user equipment sent by the base station.
  • the information of the at least one cellular user equipment includes location information of each cellular user equipment, resource block occupancy information of each cellular user equipment, minimum communication requirement SINR information of each cellular user equipment, and per cellular user equipment Maximum tolerable interference strength information, etc.
  • the base station may calculate a maximum tolerable interference strength of each cellular user equipment according to the received signal strength and minimum communication requirement SINR information of each cellular user equipment.
  • the vehicle user equipment may receive information of each cellular user equipment that the base station transmits by broadcasting.
  • the vehicle user equipment determines whether the transmission resource is multiplexed by another vehicle user equipment.
  • the vehicle user equipment may first determine whether it is occupied by other user equipments, and then decide whether to join the user equipment collection (or may be called a resource cluster) of the multiplex transmission resource according to actual conditions. .
  • the process proceeds to S306, and the vehicle user equipment calculates the maximum transmission power Pmax .
  • the vehicle user equipment can calculate the distance between the cellular user equipment and the cellular user equipment according to the received location information of the cellular user equipment, and then calculate the maximum transmission power P max according to the maximum tolerable interference strength of the received cellular user equipment.
  • P max means that communication above this value affects cellular user equipment.
  • the vehicle user equipment determines whether P rest >P min is satisfied.
  • P rest is the remaining transmit power of the vehicle user equipment, and its initial value is P 0 (ie, the initial power when no communication is performed).
  • P rest >P min
  • S308 multiplexing transmission resources of the cellular user equipment, and selecting P is a transmission (transmit) power used when the vehicle user equipment communicates, where P meets a preset condition min (P) Rest , P max )>P>P min .
  • the process proceeds to S310, where the vehicle user equipment acquires interference information of the L vehicle user equipments that multiplex the transmission resources.
  • the vehicle user equipment can receive interference information sent by the L vehicle user equipments, such as tolerable interference strength, location information, occupied resource block numbers, and the like of the L user equipments.
  • interference information sent by the L vehicle user equipments such as tolerable interference strength, location information, occupied resource block numbers, and the like of the L user equipments.
  • S311 calculates the maximum transmission power P max, and obtains the maximum transmission power P max1 L a vehicle user equipment, P max2, ..., P maxL .
  • the vehicle user equipment calculates its own maximum transmission power P max according to the acquired location information of the L vehicle user equipments and the tolerable interference intensity, and acquires the maximum transmission powers P max1 , P max2 , ... of the L vehicle user equipments. , P maxL .
  • P max means that the communication in the L vehicle user equipment is affected when the value is higher than this value.
  • P max1 , P max2 , . . . , P maxL respectively represent the maximum transmission power of the first to L terminal devices
  • L represents the number of vehicle user equipments that multiplex the transmission resources of the cellular user equipment.
  • the vehicle user equipment determines whether P rest >P min is satisfied.
  • the vehicle user equipment Similar to S307, in this case, the vehicle user equipment also needs to judge whether the remaining transmission power satisfies the condition, and details are not described herein again.
  • the vehicle user equipment multiplexes transmission resources of the cellular user equipment, and selects P as the transmission power, where P satisfies a preset condition min (P rest , P max , P max1 , P max2 , . . . , P maxL ). P>P min .
  • the vehicle user equipment can fully utilize the transmission resources of the cellular user equipment by means of power control, thereby greatly improving the spectrum efficiency and the communication capacity, and Moreover, mutual interference between user equipments that multiplex transmission resources is reduced. Further, the vehicle user equipment assumes some calculation and decision behavior, reducing the burden on the base station.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the communication method of the device to the terminal device in the device D2D according to the embodiment of the present invention is described in the foregoing, and the communication method of the device in the device to the device D2D according to the embodiment of the present invention is introduced from the network device side.
  • the method 400 includes:
  • the network device determines information of the at least one second terminal device, where the information of the at least one second terminal device is used by the first terminal device to determine a target resource used.
  • the network device sends the information of the at least one second terminal device to the first terminal device.
  • the information of the at least one second terminal device includes at least one of the following:
  • Each of the at least one second terminal device uses information of the target resource, interference capability information of each of the second terminal devices, and location information of each of the second terminal devices.
  • the information that the second terminal device uses the target resource includes resource block occupation information of the target resource used by each second terminal device, and the second terminal device uses the target resource to transmit Information on the maximum transmit power that can be used; or,
  • the interference capability information of each of the second terminal devices includes: a maximum interference that each of the second terminal devices can tolerate.
  • the network device determines information of the at least one second terminal device, the information of the at least one second terminal device is used by the first terminal device to determine the target resource used, and sends the target resource to the first terminal device.
  • the resource control information is transmitted, so that the first terminal device communicates using the transmission resource of the second terminal device according to the information of the at least one second terminal device, and the communication resource can be flexibly allocated, thereby improving the utilization of the spectrum resource.
  • the network device determines information about the at least one second terminal device, including:
  • the network device according to the location information of the second terminal device, the minimum pass of the second terminal device
  • the information about the tolerable interference capability of the second terminal device is determined by the information about the demand and the resource usage information of the second terminal device, and the information of the second terminal device includes the tolerable interference capability information.
  • the network device acquires related information of each second terminal terminal, including location information, communication requirement information (such as SINR value, RSRP value, etc.), resource block information (such as resource block number), and signal strength information.
  • the network device can calculate the maximum tolerable interference strength of each second terminal device according to the information and send it to the first terminal device.
  • the network device determines information of the at least one second terminal device, the information of the at least one second terminal device is used by the first terminal device to determine the target resource used, and sends the transmission resource control information to the first terminal device,
  • the first terminal device can communicate with the transmission resource of the second terminal device according to the information of the at least one second terminal device, so that the communication resource can be allocated flexibly, thereby improving the utilization of the spectrum resource.
  • FIG. 5 shows a schematic block diagram of a terminal device 500 according to an embodiment of the present invention.
  • the terminal device 500 includes:
  • a determining module 510 configured to determine information of the at least one second terminal device that uses the target resource
  • the processing module 520 is configured to perform D2D communication by using the target resource according to the information of the at least one second terminal device determined by the determining module 510.
  • the information of the at least one second terminal device includes at least one of the following:
  • Each of the at least one second terminal device uses information of the target resource, interference capability information of each of the second terminal devices, and location information of each of the second terminal devices.
  • the information that the second terminal device uses the target resource includes resource block occupation information of the target resource used by each second terminal device, and the second terminal device uses the target resource to transmit Information on the maximum transmit power that can be used; or,
  • the interference capability information of each of the second terminal devices includes: a maximum interference that each of the second terminal devices can tolerate.
  • the terminal device 500 can flexibly allocate the communication by determining the D2D communication by using the target resource according to the information of the at least one second terminal device by determining the information of the at least one second terminal device that uses the target resource. Resources, thereby increasing the utilization of spectrum resources.
  • terminal device 500 can represent the appearance of various embodiments in the foregoing method side. First terminal device.
  • the terminal device 500 further includes:
  • the determining module is configured to determine whether the transmission resource of the second terminal device is used by another terminal device.
  • processing module 520 is specifically configured to:
  • processing module 520 is specifically configured to:
  • the terminal device When the maximum transmission power is greater than the minimum transmission power of the terminal device capable of satisfying the communication requirement, the terminal device performs D2D communication by using the target resource.
  • processing module 520 is specifically configured to:
  • the transmission power P satisfies min(P rest , P max )>P>P min , where P max is the maximum transmission power, P min is the minimum transmission power, and P rest is the current terminal device Remaining transmit power;
  • the target resource is used for D2D communication.
  • processing module 520 is further configured to:
  • the first terminal device When the minimum value of the maximum transmit power and the maximum transmit power of the L second terminal devices is greater than the minimum transmit power, the first terminal device performs D2D communication by using the target resource, where the target resource is L.
  • the second terminal device uses, the L maximum transmit powers respectively indicate the maximum transmit power that the first to L second terminal devices can use when using the target resource.
  • processing module 520 is specifically configured to:
  • the target resource is used for D2D communication.
  • the terminal device 500 further includes:
  • an update module configured to update the current remaining transmit power Prest of the terminal device according to the transmit power after the D2D communication is performed by using the target resource.
  • the update module is specifically configured to:
  • the current remaining transmit power of the first terminal device is determined according to the following update formula:
  • the update formula indicates that the terminal device subtracts the transmit power P using the current remaining transmit power P′ rest after communicating using the target resource.
  • processing module 520 is further configured to:
  • the determining module 510 is specifically configured to:
  • the at least one terminal device performs D2D communication with the target resource, and/or communicates with the network device.
  • the terminal device 500 may perform the communication method 200 of the device to the terminal device in the device D2D according to the embodiment of the present invention, and various embodiments thereof, and the above and other operations and/or operations of the respective modules in the device 500
  • the functions are respectively implemented in order to implement the corresponding processes of the foregoing various methods, and are not described herein for brevity.
  • the terminal device 500 of the embodiment of the present invention can flexibly allocate the communication by determining the D2D communication using the target resource according to the information of the at least one second terminal device by determining the information of the at least one second terminal device that uses the target resource. Resources, thereby increasing the utilization of spectrum resources. Further, the first terminal device can communicate using the transmission resources of the second terminal device in a power control manner, and at the same time, ensure that other terminal devices using the transmission resources of the second terminal device can communicate.
  • the terminal device according to an embodiment of the present invention has been described in detail above, and a network device according to an embodiment of the present invention will be described below.
  • FIG. 6 shows a schematic block diagram of a network device 600 in accordance with an embodiment of the present invention.
  • the network device 600 includes:
  • a determining module 610 configured to determine information of the at least one second terminal device, where the information of the at least one second terminal device is used by the first terminal device to determine a target resource used;
  • the sending module 620 is configured to send, to the first terminal device, the information of the at least one second terminal device determined by the determining module 610.
  • the information of the at least one second terminal device includes at least one of the following:
  • Each of the at least one second terminal device uses information of the target resource, interference capability information of each of the second terminal devices, and location information of each of the second terminal devices.
  • the information that the second terminal device uses the target resource includes resource block occupation information of the target resource used by each second terminal device, and the second terminal device uses the target resource to transmit Information on the maximum transmit power that can be used; or,
  • the interference capability information of each of the second terminal devices includes: a maximum interference that each of the second terminal devices can tolerate.
  • the determining module 610 is specifically configured to:
  • the information includes the tolerable interference capability information.
  • the network device determines information of the at least one second terminal device, where the information of the at least one second terminal device is used by the first terminal device to determine the target resource used, and the communication resource can be flexibly allocated, thereby improving Utilization of spectrum resources.
  • the network device 600 may perform the communication method 400 of the device to the terminal device in the device D2D and its various embodiments according to an embodiment of the present invention, and the above and other operations and/or operations of the respective modules in the device 600
  • the functions are respectively implemented in order to implement the corresponding processes of the foregoing various methods, and are not described herein for brevity.
  • FIG. 7 shows a structure of an apparatus for a terminal device according to still another embodiment of the present invention, comprising at least one processor 702 (for example, a CPU), at least one network interface 705 or other communication interface, a memory 706, and at least one communication bus. 703, used to implement connection communication between these devices.
  • the processor 702 is configured to execute executable modules, such as computer programs, stored in the memory 706.
  • the memory 706 may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory.
  • a communication connection with at least one other network element is achieved by at least one network interface 705 (which may be wired or wireless).
  • the memory 706 stores the program 7061
  • the processor 702 executes the program 7061 for performing the communication method of the terminal device on the terminal device side of the embodiment of the present invention to the terminal device in the device D2D.
  • FIG. 8 is a block diagram showing the structure of an apparatus for a network device according to still another embodiment of the present invention, including One less processor 802 (e.g., CPU), at least one network interface 805 or other communication interface, memory 806, and at least one communication bus 803 are used to effect connection communication between these devices.
  • the processor 802 is configured to execute executable modules, such as computer programs, stored in the memory 806.
  • the memory 806 may include a high speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory such as at least one disk memory.
  • a communication connection with at least one other network element is achieved by at least one network interface 805 (which may be wired or wireless).
  • the memory 806 stores the program 8061
  • the processor 802 executes the program 8061, which is used to perform the communication method of the device in the network device side of the embodiment of the present invention to the terminal device in the device D2D.
  • the program 8061 is used to perform the communication method of the device in the network device side of the embodiment of the present invention to the terminal device in the device D2D.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • 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 Can be integrated 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 indirect coupling through some interface, device or unit.
  • a communication connection which may be in 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 invention 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 invention 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 invention.
  • 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

本发明实施例提出了一种设备到设备D2D中终端设备的通信方法、终端设备和网络设备。该方法包括：第一终端设备确定使用目标资源的至少一个第二终端设备的信息；该第一终端设备根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信。本发明实施例的设备到设备D2D中终端设备的通信方法、终端设备和网络设备，能够灵活得分配通信资源，从而提高了频谱资源的利用率。

Description

设备到设备中终端设备的通信方法、终端设备和网络设备 技术领域
本发明实施例涉及物联网领域，并且更具体地，涉及一种设备到设备D2D中终端设备的通信方法、终端设备和网络设备。
背景技术
传统的长期演进(Long Term Evolution，LTE)通信网络中，两个移动终端之间有通信需求时，都必须通过基站转发，至少需要两跳通信链路。随着通信需求的日益增长，设备到设备(Device to Device，D2D)通信技术应运而生。D2D技术允许短距离的通信节点直接通信，不经过基站转发，由两跳网络转为一跳，一定程度上解决了无线通信系统频谱资源匮乏的问题。D2D技术可以应用于物联网通信系统中，比如车联网通信系统。但是在车联网系统中，移动接入点比较密集，且车辆通信间距较小，通信节点数量较大，现有的通信方式并不能充分使用传输资源，往往造成性能的损失，造成了频谱资源的浪费。因此，亟需提出一种方法来解决该问题。
发明内容
本发明实施例提供了一种设备到设备D2D中终端设备的通信方法、终端设备和网络设备，能够灵活得分配通信资源，从而提高了频谱资源的利用率。
第一方面，提供了一种设备到设备D2D中终端设备的通信方法，包括：
第一终端设备确定使用目标资源的至少一个第二终端设备的信息；
该第一终端设备根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信。
可选地，该至少一个第二终端设备的信息包括以下中的至少一种：
该至少一个第二终端设备中每个该第二终端设备使用该目标资源的信息、每个该第二终端设备的干扰能力信息，每个该第二终端设备的位置信息。
可选地，每个该第二终端设备使用该目标资源的信息包括该每个第二终端设备所使用的目标资源的资源块占用信息，和该每个第二终端设备利用该目标资源进行传输的可使用的最大发送功率的信息；或，
每个该第二终端设备的干扰能力信息包括：该每个第二终端设备可容忍的最大干扰。
在本发明实施例中，“资源块占用信息”，可以指：终端设备在目标资源的资源块中所占用的时频位置信息、资源块编号信息、标识信息等，对此不作限定。换言之，资源块占用信息用于表示目标资源的资源块的使用情况，可以根据资源块的使用情况决定是否复用。比如，若某个编号的资源块已经被占用，则在选择目标资源复用时，就不使用被占用的资源块；或者，若资源块没有被占用或某个时频位置中资源块利用率较少，则可以选择该资源块进行复用，对此不作限定。
在本发明实施例中，第一终端设备通过确定使用目标资源的至少一个第二终端设备的信息，根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。
在本发明实施例中，可选地，至少一个第二终端设备的信息包括用于表征要复用的一个或多个第二终端设备的传输资源是否可以被复用的相关信息。
可选地，在一些可能的实现方式中，该至少一个终端设备利用该目标资源进行D2D通信，和/或与网络设备进行通信。
可选地，在一些可能的实现方式中，例如，“至少一个第二终端设备的信息”可以包括一个或多个该第二终端设备的资源块使用情况或者资源块占用编号信息、一个或多个该第二终端设备的位置信息、一个或多个该第二终端设备的最小通信需求信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)信息、最小参考信号接收功率(Reference Signal Receiving Power，RSRP)信息、一个或多个该第二终端设备的最大可容忍干扰强度信息等信息中的至少一种。
可选地，在本发明实施例中，目标资源即要复用的传输资源，可以是第二终端设备的上行或下行传输资源，比如，传输资源可以具体为资源块(Resource Block，RB)或其他形式。
可选地，在一些可能的实现方式中，第一终端设备和第二终端设备可以是同一类终端设备(比如第一终端设备和第二终端设备均为车辆用户设备)，也可以是不同类的终端设备(比如第一终端设备为车辆用户设备，第二终端设备为蜂窝用户设备)，对此不作限定。
可选地，在一些可能的实现方式中，该至少一个第二终端设备的信息可以是网络设备下发给该第一终端设备的，也可以是该第一终端设备自己获取的(比如第一终端设备直接从第二终端设备获取)。
可选地，在一些可能的实现方式中，第一终端设备在获得至少一个第二终端设备的信息后，可以结合功率控制的方式，使用第二终端设备的传输资源进行通信。
可选地，在一些可能的实现方式中，一个第一终端设备可以复用多个第二终端设备的传输资源。或者，多个第一终端设备可以复用一个第二终端设备的传输资源。换言之，复用同一个资源块的终端设备的数目无上限，同一终端设备复用的资源块的数目也无上限，对此不作限制。当然，在实际使用时，也可以设置最高复用资源块或终端设备的个数进行资源分配，对此不作限制。
可选地，在一些可能的实现方式中，在使用该第二终端设备的传输资源进行通信之前，该方法还可以包括：
该第一终端设备确定该第二终端设备的传输资源是否被其他终端设备使用。
第一终端设备在复用第二终端设备的传输资源之前，可以先判断该第二终端设备的传输资源有没有被其他的终端设备使用。该其他终端设备可以是第一终端设备或第二终端设备，对此不作限制。判断的目的在于：使用相同传输资源的用户设备之间会互相干扰，干扰严重的话可能会导致通信中断，为了避免出现这样的可能，第一终端设备在复用第二终端设备的传输资源时，第一终端设备可以根据判断的具体情况决定要不要复用第二终端设备的传输资源，从而保证正在使用第二终端设备的传输资源的其他终端设备能够维持通信。
可选地，作为一个实施例，第一终端设备根据该至少一个第二终端设备的信息，利用该目标资源进行设备到设备D2D通信，包括：
该第一终端设备根据该第二终端设备的位置信息，确定与该第二终端设备的距离；
该第一终端设备根据与该第二终端设备的距离、该每个第二终端设备的可容忍干扰能力信息，确定该第一终端设备在使用该目标资源时可采用的最大发送功率；
该第一终端设备根据该最大发送功率，利用该目标资源进行通信。
可选地，在一些可能的实现方式中，该第一终端设备根据该最大发送功率，利用该目标资源进行通信，包括：
在该最大发送功率大于该第一终端设备的能够满足通信需求的最小发送功率时，该第一终端设备利用该目标资源进行D2D通信。
可选地，在一些可能的实现方式中，该第一终端设备利用该目标资源进行通信，包括：
该第一终端设备确定发送功率P，该发送功率P满足min(Prest,Pmax)＞P＞Pmin，其中，Pmax为该最大发送功率，Pmin为该最小发送功率，Prest为该第一终端设备的当前剩余发送功率；
该第一终端设备按照该发送功率P，采用该目标资源进行D2D通信。
因此，第一终端设备通过确定使用目标资源的至少一个第二终端设备的信息，根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。进一步地，第一终端设备能够通过功率控制的方式使用第二终端设备的传输资源进行通信。
可选地，作为一个实施例，在该第二终端设备的传输资源已被多个第二终端设备或其他终端设备使用时；该方法还包括：
该第一终端设备获取多个该第二终端设备的干扰信息，多个该第二终端设备的干扰信息包括用于指示多个该终端设备的可容忍干扰能力的信息、多个该第二终端设备使用的传输资源的信息和多个该第二终端设备的位置信息中的至少一种；
其中，该第一终端设备根据该最大发送功率，利用该目标资源进行通信，包括：
在该最大发送功率以及该L个第二终端设备的最大发送功率中的最小值，大于该最小发送功率时，该第一终端设备利用该目标资源进行D2D通信，其中，该L个的最大发送功率分别表示第1至L个第二终端设备在使用该目标资源时可采用的最大发送功率。
可选地，在一些可能的实现方式中，该第一终端设备利用该目标资源进行通信，包括：
该第一终端设备确定发送功率P，该发送功率P满足 min(Prest,Pmax,Pmax1,Pmax2,...,PmaxL)＞P＞Pmin，其中，Pmax为该最大发送功率，Pmin为该最小发送功率，L≥1,该Pmax1,Pmax2,...,PmaxL分别表示第1至L个第二终端设备的最大发送功率，Prest为该第一终端设备的当前剩余发送功率；
该第一终端设备按照该发送功率P，采用该目标资源进行D2D通信。
可选地，在一些可能的实现方式中，该方法还包括：
当Prest＜Pmin时，该第一终端设备停止使用该目标资源进行通信。
因此，第一终端设备通过确定使用目标资源的至少一个第二终端设备的信息，根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。进一步地，第一终端设备能够通过功率控制的方式使用第二终端设备的传输资源进行通信，同时保证了使用第二终端设备的传输资源的其他终端设备能够通信。
可选地，在一些可能的实现方式中，该方法还包括：
在采用该目标资源进行D2D通信后，该第一终端设备根据该发送功率更新该第一终端设备的当前剩余发送功率Prest。
可选地，在一些可能的实现方式中，根据该发送功率更新该第一终端设备的当前剩余发送功率Prest，包括：
该第一终端设备根据以下更新公式确定该第一终端设备的当前剩余发送功率：
Prest＝P′rest-P
其中，该更新公式表示该第一终端设备在使用目标资源进行通信之后，使用当前的剩余发送功率P′rest减去该发送功率P。
这里，第一终端设备在每次使用目标资源通信后，可以对其当前的剩余发送功率进行更新，以便于灵活得控制是否使用目标资源。
第二方面，提供了一种设备到设备D2D中终端设备的通信方法，包括：
网络设备确定至少一个第二终端设备的信息，该至少一个第二终端设备的信息用于第一终端设备确定使用的目标资源；
该网络设备向该第一终端设备发送该至少一个第二终端设备的信息。
在本发明实施例中，网络设备通过确定至少一个第二终端设备的信息，该至少一个第二终端设备的信息用于第一终端设备确定使用的目标资源，并向第一终端设备发送该传输资源控制信息，以便于第一终端设备根据该至少一个第二终端设备的信息，使用该第二终端设备的传输资源进行通信，能够 灵活得分配通信资源，从而提高了频谱资源的利用率。
可选地，该至少一个第二终端设备的信息包括以下中的至少一种：
该至少一个第二终端设备中每个该第二终端设备使用该目标资源的信息、每个该第二终端设备的干扰能力信息，每个该第二终端设备的位置信息。
可选地，每个该第二终端设备使用该目标资源的信息包括该每个第二终端设备所使用的目标资源的资源块占用信息，和该每个第二终端设备利用该目标资源进行传输的可使用的最大发送功率的信息；或，
每个该第二终端设备的干扰能力信息包括：该每个第二终端设备可容忍的最大干扰。
可选地，该网络设备确定至少一个第二终端设备的信息，包括：
该网络设备根据该第二终端设备的位置信息、该第二终端设备的最小通信需求信息、该第二终端设备的资源使用信息，确定该第二终端设备的可容忍干扰能力信息，该第二终端设备的信息包括该可容忍干扰能力信息。
第三方面，提供了一种终端设备，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方法。具体地，该装置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方法的单元。
第四方面，提供了一种网络设备，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方法。具体地，该装置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方法的单元。
第五方面，提供了一种终端设备。该终端设备包括处理器、存储器和通信接口。处理器与存储器和通信接口连接。存储器用于存储指令，处理器用于执行该指令，通信接口用于在处理器的控制下与其他网元进行通信。该处理器执行该存储器存储的指令时，该执行使得该处理器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。
第六方面，提供了一种网络设备。该终端设备包括处理器、存储器和通信接口。处理器与存储器和通信接口连接。存储器用于存储指令，处理器用于执行该指令，通信接口用于在处理器的控制下与其他网元进行通信。该处理器执行该存储器存储的指令时，该执行使得该处理器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。
第七方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有程序，该程序使得终端设备执行上述第一方面，及其各种实现方式中的 任一种设备到设备D2D中终端设备的通信方法。
第八方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有程序，该程序使得网络设备执行上述第二方面，及其各种实现方式中的任一种设备到设备D2D中终端设备的通信方法。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是根据本发明实施例的一个应用场景的示意图。
图2是根据本发明实施例的设备到设备D2D中终端设备的通信方法的示意性流程图。
图3是根据本发明实施例的设备到设备D2D中终端设备的通信的一个例子的示意图。
图4是根据本发明另一实施例的设备到设备D2D中终端设备的通信方法的示意性流程图。
图5是根据本发明实施例的终端设备的示意性框图。
图6是根据本发明实施例的网络设备的示意性框图。
图7是根据本发明又一实施例提供的终端设备的结构图。
图8是根据本发明又一实施例提供的网络设备的结构图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
应理解，本发明实施例的技术方案可以应用于设备到设备(Device to Device，D2D)通信系统，例如，物联网系统、车载网络通信系统、车联网系统、车辆到车辆(vehicle to vehicle，V2V)通信系统等。
还应理解，本发明实施例的技术方案也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、通用分组无线业务(General Packet Radio Service，GPRS)、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)、等目前的通信系统，以及，尤其应用于未来的5G系统。
还应理解，本发明实施例中，网络设备也可以称为基站或网络侧设备等，基站可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是未来5G网络中的基站设备等，本发明对此并不限定。
还应理解，在本发明实施例中，终端设备可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网(Core Network)进行通信，终端设备可称为接入终端、用户设备(User Equipment，UE)、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。终端设备可以是蜂窝电话、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、可穿戴设备以及未来5G网络中的终端设备等。例如，在本发明实施例中，终端设备可以包括D2D设备、蜂窝用户设备(Cellular User Equipment，CUE)、车辆用户设备(Vehicle User Equipment，VUE)等。
图1是一个场景示意图。应理解，为了便于理解，这里引入图1中的场景为例进行说明，但并不对本发明构成限制。图1中示出了基站10、蜂窝用户设备11、车辆用户设备21、车辆用户设备22、车辆用户设备31、车辆用户设备32、车辆用户设备41、车辆用户设备42。车辆用户设备21和车辆用户设备22、车辆用户设备31和车辆用户设备32、车辆用户设备41和车辆用户设备42分别为3对短距离通信的车辆用户设备对。其中，
Figure PCTCN2016099503-appb-000001
表示蜂 窝用户设备11的传输信号，
Figure PCTCN2016099503-appb-000002
表示车辆用户设备对之间的通信信号，
Figure PCTCN2016099503-appb-000003
表示蜂窝用户设备11的通信信号对车辆用户设备对的通信信号的干扰，
Figure PCTCN2016099503-appb-000004
表示车辆用户设备对的通信信号对蜂窝用户设备11的通信信号的干扰，
Figure PCTCN2016099503-appb-000005
表示车辆用户设备对的通信信号之间的互相干扰。
应理解，图1中的车辆用户设备对可以是车与车组成的通信对，也可以是车与设备组成的通信对，对此不作限制。
还应理解，图1中是以一个蜂窝用户设备为例进行说明，其数目可以是多个，对此不作限制。同理，图1中的车辆用户设备对也可以是多个，并不限于图中的3对。并且，在实际应用中，图中的车辆用户设备对不一定是成对出现，对此不作限制。
在本发明实施例中，车辆用户设备可以是车辆到X(Vehicle to X，V2X)设备，或者D2D通信设备，对此不作限制。
可选地，图1中的蜂窝用户设备也可以是车辆用户设备，对此不作限制。
如图1所示，蜂窝用户设备11可以与基站10进行通信，车辆用户设备21可以与车辆用户设备22进行通信，车辆用户设备31可以与车辆用户设备32进行通信，车辆用户设备41可以与车辆用户设备42进行通信。这里，车辆用户设备21与车辆用户设备22进行通信时，可以使用蜂窝用户设备11的上行或下行资源。
然而现有的车联网通信中，一个蜂窝用户设备的传输资源只能被一个车辆用户设备对所使用，或者，一个车辆用户设备对只能使用一个蜂窝用户设备的传输资源，使得蜂窝用户设备的传输资源的复用不够灵活，不能充分利用资源，造成性能的损失。因此，本专利的终端设备试图根据至少一个第二终端设备的信息，灵活得复用传输资源。比如，若采用本专利的设备到设备D2D中终端设备的通信方法，图1中的多个车辆用户设备可以复用蜂窝用户设备的资源块(Resource Block，RB)，或者一对车辆用户设备可以复用多个蜂窝用户设备的资源块。
图2示出了根据本发明实施例的设备到设备D2D中终端设备的通信方法200的示意性流程图。该方法200可以第一终端设备执行，例如由图1中的车辆用户设备执行，该车辆用户设备可以是图1中的车辆用户设备21、车辆用户设备22、车辆用户设备31、车辆用户设备32、车辆用户设备41或车辆用户设备42。如图2所示，该方法200包括：
S210，第一终端设备确定使用目标资源的至少一个第二终端设备的信息；
可选地，该至少一个第二终端设备的信息包括以下中的至少一种：
该至少一个第二终端设备中每个该第二终端设备使用该目标资源的信息、每个该第二终端设备的干扰能力信息，每个该第二终端设备的位置信息。
可选地，每个该第二终端设备使用该目标资源的信息包括该每个第二终端设备所使用的目标资源的资源块占用信息，和该每个第二终端设备利用该目标资源进行传输的可使用的最大发送功率的信息；或，
每个该第二终端设备的干扰能力信息包括：该每个第二终端设备可容忍的最大干扰。
在本发明实施例中，“资源块占用信息”，可以指：终端设备在目标资源的资源块中所占用的时频位置信息、资源块编号信息、标识信息等，对此不作限定。换言之，资源块占用信息用于表示目标资源的资源块的使用情况，可以根据资源块的使用情况决定是否复用。比如，若某个编号的资源块已经被占用，则在选择目标资源复用时，就不使用被占用的资源块；或者，若资源块没有被占用或某个时频位置中资源块利用率较少，则可以选择该资源块进行复用，对此不作限定。
在本发明实施例中，比如，当第一终端设备有通信需求时，可以尝试复用某个终端设备的传输资源。在尝试所要复用的第二终端设备的传输资源(即目标资源)时，需要先获取或确定第二终端设备的信息，以便于判断第二终端设备的传输资源是否可以被复用。
在本发明实施例中，该至少一个第二终端设备的信息包括用于表征要复用的一个或多个第二终端设备是否可以被复用的相关信息。
在本发明实施例中，“目标资源”表示第一终端设备要复用或使用的至少一个第二终端设备的传输资源。可选地，在本发明实施例中，“目标资源”可以是第二终端设备的上行或下行传输资源，比如，传输资源可以具体为RB或其他资源形式。
可选地，例如，“至少一个第二终端设备的信息”可以包括一个或多个该第二终端设备的资源块使用情况或者资源块占用信息、一个或多个该第二终端设备的位置信息、一个或多个该第二终端设备的最小通信需求信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)信息、最小参考 信号接收功率(Reference Signal Receiving Power，RSRP)信息、一个或多个该第二终端设备的最大可容忍干扰强度信息等信息中的至少一种。
需要说明的是，在本发明实施例中，第二终端设备可以是图1中的蜂窝用户设备。或者，可选地，第二终端设备也可以是图1中的车辆用户设备。换言之，车辆用户设备可以复用蜂窝用户设备的上行或下行资源，也可以复用其他车辆用户设备对的通信资源，对此不作限制。
可选地，该至少一个第二终端设备的信息可以是网络设备下发给该第一终端设备的。例如，在图1中，若存在多个蜂窝用户设备11(图1中未示出多个)，基站10掌握多个蜂窝用户设备11的位置信息、最小通信需求SINR信息、资源块占用信息等，基站10可以根据各个蜂窝用户设备11的信号强度和最小通信需求SINR，计算出每个蜂窝用户设备11的最大可容忍干扰强度，然后将其所掌握和/或计算的蜂窝用户设备的多个信息通过广播的形式下发给有通信需求的车辆用户设备，以便于车辆用户设备选择蜂窝用户设备的传输资源进行复用。
可选地，该至少一个第二终端设备的信息也可以是该第一终端设备自己获取的(比如第一终端设备直接从第二终端设备获取)，对此不作限制。
应理解，引入“第一终端设备”和“第二终端设备”只是为了描述方便，并不对本发明构成具体限定。
还应理解，在本发明实施例中，第一终端设备和第二终端设备可以是同一类终端设备(比如第一终端设备和第二终端设备均为车辆用户设备)，也可以是不同类的终端设备(比如第一终端设备为车辆用户设备，第二终端设备为蜂窝用户设备)，对此不作限定。
S220，该第一终端设备根据该至少一个第二终端设备的信息，利用该目标资源进行通信。
具体而言，第一终端设备在获得至少一个第二终端设备的信息后，可以根据获取到的至少一个第二终端设备的信息，(确定)使用目标资源(比如，一个或多个第二终端设备的传输资源)进行通信。
可选地，第一终端设备在获得至少一个第二终端设备的信息后，可以结合功率控制的方式，使用第二终端设备的传输资源进行通信。
例如，在第一终端设备获取到第二终端设备的位置信息和可容忍干扰信息后，可根据位置信息获知其与第二终端设备的距离，然后根据距离和可容 忍干扰信息后，计算出自身的最大发送功率。另外，第一终端设备可以根据自身的最小通信需求(比如SINR值和/或RSRP等)计算出自身的最小发送功率。最后，第一终端设备结合最大发送功率和最小发送功率选择合适的功率，按照该合适的功率使用该第二终端设备的传输资源进行通信。
应理解，在本发明实施例中，一个第一终端设备可以复用多个第二终端设备的传输资源。或者，多个第一终端设备可以复用一个第二终端设备的传输资源。换言之，复用同一个资源块的终端设备的数目无上限，同一终端设备复用的资源块的数目也无上限，对此不作限制。当然，在实际使用时，也可以设置最高复用资源块或终端设备的个数进行资源分配，对此不作限制。
在本发明实施例中，第一终端设备通过确定使用目标资源的至少一个第二终端设备的信息，根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。
可选地，在一些可能的实现方式中，至少一个终端设备利用该目标资源进行D2D通信，和/或与网络设备进行通信。
可选地，在使用该第二终端设备的传输资源进行通信之前，该方法200还可以包括：
该第一终端设备确定该第二终端设备的传输资源是否被其他终端设备使用。
具体而言，第一终端设备在复用第二终端设备的传输资源之前，可以先判断该第二终端设备的传输资源有没有被其他的终端设备使用。其中，该其他终端设备可以是第一终端设备或第二终端设备，对此不作限制。判断的目的在于：使用相同传输资源的用户设备之间会互相干扰，干扰严重的话可能会导致通信中断，为了避免出现这样的可能，第一终端设备在复用第二终端设备的传输资源时，第一终端设备可以根据判断的具体情况决定要不要复用第二终端设备的传输资源，从而保证正在使用第二终端设备的传输资源的其他终端设备能够维持通信。
下面将对第二终端设备是否被其他终端设备复用的两种情况分别进行举例说明。
可选地，作为一个实施例，在该第二终端设备的传输资源仅被一个该第二终端设备使用时，该第一终端设备根据该至少一个第二终端设备的信息，利用该目标资源进行设备到设备D2D通信，包括：
该第一终端设备根据该第二终端设备的位置信息，确定与该第二终端设备的距离；
该第一终端设备根据与该第二终端设备的距离、该每个第二终端设备的可容忍干扰能力信息，确定该第一终端设备在使用该目标资源时可采用的最大发送功率；
该第一终端设备根据该最大发送功率，利用该目标资源进行通信。
具体而言，在第一终端设备判断第二终端设备的传输资源仅被一个第二终端设备使用，没有其他终端设备复用时，第一终端设备可以根据与第二终端设备位置信息，计算与第二终端设备的距离。然后，第一终端设备根据与第二终端设备的距离、每个第二终端设备的可容忍干扰能力的信息等，确定复用第二终端设备时的最大发送功率(若第一终端设备高于最大发送功率，干扰较大，会影响第二终端设备的通信)。最后，第一终端设备根据该最大发送功率，利用目标资源进行通信。这样，第一终端设备在使用目标资源进行通信时，不会影响第二终端设备的通信。
可选地，该第一终端设备根据该最大发送功率，利用该目标资源进行通信，包括：
在该最大发送功率大于该第一终端设备的能够满足通信需求的最小发送功率时，该第一终端设备利用该目标资源进行D2D通信。
具体而言，第一终端设备的最大发送功率能够满足第一终端设备的通信需求时(即第一终端设备的通信可以得到保障)，使用目标资源进行D2D通信。
可选地，该第一终端设备利用该目标资源进行通信，包括：
该第一终端设备确定发送功率P，该发送功率P满足min(Prest,Pmax)＞P＞Pmin，其中，Pmax为该最大发送功率，Pmin为该最小发送功率，Prest为该第一终端设备的当前剩余发送功率；
该第一终端设备按照该发送功率P，采用该目标资源进行D2D通信。
具体而言，第一终端设备可以确定出发送功率P，只要P满足预设条件，即可按照该P采用目标资源进行通信。比如，该发送功率P满足预设条件min(Prest,Pmax)＞P＞Pmin，其中，Pmax为该最大发送功率，Prest为该第一终端设备的当前剩余发送功率，Pmin为该最小发送功率。另外，第一终端设备的剩余发送功率满足Prest＞Pmin。
可选地，该方法还包括：
在采用该目标资源进行D2D通信后，该第一终端设备根据该发送功率更新该第一终端设备的当前剩余发送功率Prest。
可选地，根据该发送功率更新该第一终端设备的当前剩余发送功率Prest，包括：
该第一终端设备根据以下更新公式确定该第一终端设备的当前剩余发送功率：
Prest＝P′rest-P
其中，该更新公式表示该第一终端设备在使用目标资源进行通信之后，使用当前的剩余发送功率P′rest减去该发送功率P。
具体而言，当第一终端设备没有进行通信时，其初始最大发送功率是P0(若第一终端设备没有复用任何传输资源，则剩余发送功率Prest＝P0)。首先，第一终端设备可以根据自身的最小通信需求SINR，计算最小发送功率Pmin(若低于此值时第一终端设备的通信不能保障)。然后，当第一终端设备获取到用于指示第二终端设备的可容忍干扰能力的信息后，第一终端设备结合其与第二终端设备的距离，计算出自身的最大发送功率Pmax(若高于此值时，第一终端设备对第二终端设备的干扰过大，会影响第二终端设备的通信)。最后，第一终端设备判断其剩余发送功率Prest是否满足条件(比如Prest＞Pmin)。若满足条件Prest＞Pmin，则第一终端设备选择发送功率P作为复用第二终端设备的传输资源时的发送功率。并且，发送功率P需要满足预设条件min(Prest,Pmax)＞P＞Pmin。另外，在第一终端设备使用第二终端设备的传输资源完成每一次通信时，第一终端设备需要更新其当前剩余发送功率Prest，更新方式可以为:Prest＝Prest-P。
这里，当Prest＜Pmin时，第一终端设备放弃复用第二终端设备的传输资源。
可选地，第一终端设备可以继续检测其他终端设备的传输资源的使用情况，重复上述步骤。
因此，第一终端设备通过确定使用目标资源的至少一个第二终端设备的信息，根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。进一步地，第一终端设备能够通过功率控制的方式使用第二终端设备的传输资源进行通信。
可选地，作为一个实施例，比如，在该第二终端设备的传输资源已被该多个第二终端设备(或其他终端设备)使用时，同样适用于本发明实施例。该情况与该第二终端设备的传输资源仅被第二终端设备使用时的情况类似，为了简洁，对于一些类似的需要执行的操作不作详细介绍。可选地，该方法还可以包括：
该第一终端设备获取该L个第二终端设备的信息，该其他终端设备的信息包括用于指示该L个第二终端设备的可容忍干扰能力的信息、该L个第二终端设备使用的传输资源的信息和该L个第二终端设备的位置信息中的至少一种。
例如，在本发明实施例中，当第一终端设备判断第二终端设备的传输资源不仅被第二终端设备使用，还被其他终端设备(比如，图1中的多个车辆用户设备对)例如L个第二终端设备占用时，则第一终端设备在确定发送功率时还需要考虑其他终端设备的一些因素(比如其他终端设备的干扰信息等)。第一终端设备可以获取其他终端设备的干扰信息(比如其他终端设备的可容忍干扰能力的信息、所占用的资源块信息、位置信息、信号强度信息等)。然后，第一终端设备根据用于指示第二终端设备的可容忍干扰能力的信息、第二终端设备的传输资源使用情况信息、其他终端设备的干扰信息等，确定发送功率。同样地，第一终端设备需要对其剩余发送功率进行更新，并在发送功率和其当前剩余发送功率的关系满足预设条件时，使用该第二终端设备的传输资源进行通信。应理解，该其他终端设备可以是第一终端设备，也可以是第二终端设备，对此不作限定。
在本发明实施例中，已占用某些资源块的终端设备(比如L个第二终端设备)可以根据自己的通信信号强度及已接收的信号干扰强度、最小通信需求SINR，计算自己的可容忍的干扰强度。另外，可选地，第一终端设备还可以接收其他终端设备(即已占用某些资源块的终端设备)向第一终端设备广播或告知的干扰信息(比如可容忍干扰能力的信息、所占用的资源块信息、位置信息、信号强度信息等)。
在本发明实施例中，可选地，在该目标资源被L个该第二终端设备使用时，该第一终端设备根据该最大发送功率，利用该目标资源进行通信，包括：
在该最大发送功率以及该L个第二终端设备的最大发送功率中的最小值，大于该最小发送功率时，该第一终端设备利用该目标资源进行D2D通 信，其中，该L个的最大发送功率分别表示第1至L个第二终端设备在使用该目标资源时可采用的最大发送功率。
可选地，该第一终端设备利用该目标资源进行通信，包括：
该第一终端设备确定发送功率P，该发送功率P满足min(Prest,Pmax,Pmax1,Pmax2,...,PmaxL)＞P＞Pmin，其中，Pmax为该最大发送功率，Pmin为该最小发送功率，L≥1,该Pmax1,Pmax2,...,PmaxL分别表示第1至L个第二终端设备的最大发送功率，Prest为该第一终端设备的当前剩余发送功率；
该第一终端设备按照该发送功率P，采用该目标资源进行D2D通信。
具体而言，对于第二终端设备的传输资源在被L个第二终端设备占用的情况，第一终端设备选择其发送功率P的方式，与前文第二终端设备的传输资源仅被第二终端设备占用的情况类似。区别在于：该情况下发送功率P满足的预设条件中还需要考虑L个第二终端设备的通信对第一终端设备的影响。比如，预设条件min(Prest,Pmax,Pmax1,Pmax2,...,PmaxL)＞P＞Pmin中需要加入L个第二终端设备的最大发送功率的影响条件，该Pmax1,Pmax2,...,PmaxL分别表示第1至L个第二终端设备的在使用该目标资源时可采用的最大发送功率，L表示该L个第二终端设备的数目。
应理解，为了简洁，这里对一些术语概念或类似的步骤不作赘述。
因此，第一终端设备通过确定使用目标资源的至少一个第二终端设备的信息，根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。进一步地，第一终端设备能够通过功率控制的方式使用第二终端设备的传输资源进行通信，同时保证了使用第二终端设备的传输资源的其他终端设备能够通信。
下面将结合图3描述本发明实施例。图3示出了根据本发明实施例的设备到设备中终端设备的通信方法的一个例子的示意图。应理解，引入图3是为了便于本领域的技术人员理解本发明实施例，并不对本发明构成限制。如图3所示，包括：
S301，基站为蜂窝用户设备分配频谱资源。
基站掌握所有蜂窝用户设备的位置信息，可以为各个蜂窝用户设备分配频谱资源。其中，各个蜂窝用户设备间使用的频谱资源是正交独立的，即各个蜂窝用户设备间的频谱资源不会互相干扰。比如，假设系统中有N个CUE用户，分别占用N个独立正交的资源块RB。这里，以某个蜂窝用户设备为 例进行说明。
S302，车辆用户设备检测接收到的复用资源块的干扰水平。
当车辆用户设备有通信需求时，可以尝试复用某个蜂窝用户设备的传输资源。车辆用户设备在尝试复用资源块时，可先对接收到的蜂窝用户设备的干扰水平进行检测，以便于判断资源块是否可以被复用。可选地，蜂窝用户设备的干扰水平可以是基站通过广播下发的。
S303，车辆用户设备计算最小发送功率Pmin。
车辆用户设备可以根据最小通信需求SINR或者RSRP等需求，计算最小发送功率Pmin，其中，Pmin是指低于此值时车辆用户设备的通信不能保证。
S304，车辆用户设备接收基站发送的至少一个蜂窝用户设备的信息。
可选地，至少一个蜂窝用户设备的信息包括每个蜂窝用户设备的位置信息、每个蜂窝用户设备的资源块占用信息、每个蜂窝用户设备的最小通信需求SINR信息、每个蜂窝用户设备的最大可容忍干扰强度信息等。
可选地，基站可以根据接收到的每个蜂窝用户设备的信号强度和最小通信需求SINR信息，计算出每个蜂窝用户设备的最大可容忍干扰强度。
可选地，车辆用户设备可以接收基站通过广播发送的每个蜂窝用户设备的信息。
S305，车辆用户设备判断传输资源是否被其他车辆用户设备复用。
车辆用户设备在尝试复用蜂窝用户设备的传输资源时，可以先判断其有没有被其他用户设备占用，然后根据实际情况决定是否加入复用传输资源的用户设备集合(或可称作资源簇)。
可选地，当判断出蜂窝用户设备的传输资源仅被蜂窝用户设备使用时(无任何车辆用户设备复用)，则转入S306，车辆用户设备计算最大发送功率Pmax。
车辆用户设备可根据接收到的蜂窝用户设备的位置信息，计算其与蜂窝用户设备之间的距离，然后再结合接收到的蜂窝用户设备的最大可容忍干扰强度，计算出最大发送功率Pmax，Pmax是指高于此值时，会影响蜂窝用户设备的通信。
S307，车辆用户设备判断是否满足Prest＞Pmin。
Prest为车辆用户设备的剩余发送功率，其初始值为P0(即没有进行通信时的初始功率)。
可选地，当Prest＞Pmin时，S308，复用蜂窝用户设备的传输资源，并选择P为车辆用户设备通信时使用的发送(发射)功率，其中，P满足预设条件min(Prest,Pmax)＞P＞Pmin。
这里，车辆用户设备每次通信时会对剩余发送功率Prest更新，更新方式可以为:Prest＝Prest-P。
可选地，S309，达到复用上限，转至S314，结束。
若Prest＜Pmin时，说明达到复用上限，则放弃复用蜂窝用户设备的传输资源；若Prest＞Pmin，则重复执行S302-S309，继续检测其他传输资源。
可选地，当判断蜂窝用户设备的传输资源被蜂窝用户设备使用时和L个车辆用户设备复用时，转入S310，车辆用户设备获取复用传输资源的L个车辆用户设备的干扰信息。
具体而言，车辆用户设备可以接收L个车辆用户设备发送的干扰信息，比如L个用户设备的可容忍干扰强度、位置信息、所占用的资源块编号等信息。
S311，计算最大发送功率Pmax，并获取L个车辆用户设备的最大发送功率Pmax1,Pmax2,...,PmaxL。
车辆用户设备根据获取的L个车辆用户设备的位置信息、可容忍干扰强度，计算出自身的最大发送功率Pmax，并获取L个车辆用户设备的最大发送功率Pmax1,Pmax2,...,PmaxL。这里，Pmax是指高于此值时会影响L个车辆用户设备中的通信。其中，Pmax1,Pmax2,...,PmaxL分别表示第1至L个终端设备的最大发送功率，L表示复用蜂窝用户设备的传输资源的车辆用户设备的数目。
S312，车辆用户设备判断是否满足Prest＞Pmin。
类似于S307，在这种情况下，车辆用户设备也需要判断其剩余发送功率是否满足条件，这里不再赘述。
S313，车辆用户设备复用蜂窝用户设备的传输资源，并选择P为发射功率，其中，P满足预设条件min(Prest,Pmax,Pmax1,Pmax2,...,PmaxL)＞P＞Pmin。
可选地，S309，达到复用上限，转至S314，结束。
具体地，若Prest＜Pmin时，说明达到复用上限，则放弃复用蜂窝用户设备的传输资源；若Prest＞Pmin，则跳至S302。
因此，在上述例子中，车辆用户设备能够通过功率控制的方式，充分得利用蜂窝用户设备的传输资源，较大程度得提高了频谱效率和通信容量，并 且，减小了复用传输资源的用户设备间的相互干扰。进一步地，车辆用户设备承担了一些计算和决策行为，减少了基站的负担。
应理解，在本发明的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
前文从终端设备侧介绍了根据本发明实施例的设备到设备D2D中终端设备的通信方法，下文从网络设备侧介绍根据本发明实施例的设备到设备D2D中终端设备的通信方法。
图4示出了根据本发明另一实施例的设备到设备D2D中终端设备的通信方法400。该方法由网络设备执行，应理解，实施例中一些相关的概念或术语在终端设备侧已经详细介绍过，为了简洁，网络设备侧将不作赘述。如图4所示，该方法400包括：
S410，网络设备确定至少一个第二终端设备的信息，该至少一个第二终端设备的信息用于第一终端设备确定使用的目标资源；
S420，该网络设备向该第一终端设备发送该至少一个第二终端设备的信息。
可选地，该至少一个第二终端设备的信息包括以下中的至少一种：
该至少一个第二终端设备中每个该第二终端设备使用该目标资源的信息、每个该第二终端设备的干扰能力信息，每个该第二终端设备的位置信息。
可选地，每个该第二终端设备使用该目标资源的信息包括该每个第二终端设备所使用的目标资源的资源块占用信息，和该每个第二终端设备利用该目标资源进行传输的可使用的最大发送功率的信息；或，
每个该第二终端设备的干扰能力信息包括：该每个第二终端设备可容忍的最大干扰。
在本发明实施例中，网络设备通过确定至少一个第二终端设备的信息，该至少一个第二终端设备的信息用于第一终端设备确定使用的目标资源，并向该第一终端设备发送该传输资源控制信息，以便于第一终端设备根据该至少一个第二终端设备的信息，使用该第二终端设备的传输资源进行通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。
可选地，该网络设备确定至少一个第二终端设备的信息，包括：
该网络设备根据该第二终端设备的位置信息、该第二终端设备的最小通 信需求信息、该第二终端设备的资源使用信息，确定该第二终端设备的可容忍干扰能力信息，该第二终端设备的信息包括该可容忍干扰能力信息。
具体而言，网络设备掌握每个第二终端终端的相关信息，包括位置信息、通信需求信息(比如SINR值、RSRP值等)、资源块信息(比如资源块编号)、信号强度信息等。网络设备可以根据这些信息计算出每个第二终端设备的最大可容忍干扰强度，并将其发送给第一终端设备。
因此，网络设备通过确定至少一个第二终端设备的信息，该至少一个第二终端设备的信息用于第一终端设备确定使用的目标资源，并向该第一终端设备发送该传输资源控制信息，以便于第一终端设备根据该至少一个第二终端设备的信息，使用该第二终端设备的传输资源进行通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。
前面详细介绍了根据本发明实施例的设备到设备D2D中终端设备的通信方法，下面将介绍根据本发明实施例的终端设备。
图5示出了根据本发明实施例的终端设备500的示意性框图。如图5所示，该终端设备500包括：
确定模块510，用于确定使用目标资源的至少一个第二终端设备的信息；
处理模块520，用于根据该确定模块510确定的该至少一个第二终端设备的信息，利用该目标资源进行D2D通信。
可选地，该至少一个第二终端设备的信息包括以下中的至少一种：
该至少一个第二终端设备中每个该第二终端设备使用该目标资源的信息、每个该第二终端设备的干扰能力信息，每个该第二终端设备的位置信息。
可选地，每个该第二终端设备使用该目标资源的信息包括该每个第二终端设备所使用的目标资源的资源块占用信息，和该每个第二终端设备利用该目标资源进行传输的可使用的最大发送功率的信息；或，
每个该第二终端设备的干扰能力信息包括：该每个第二终端设备可容忍的最大干扰。
在本发明实施例中，终端设备500通过通过确定使用目标资源的至少一个第二终端设备的信息，根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。
需要说明的是，终端设备500可以表示前文方法侧各个实施例中出现的 第一终端设备。
可选地，作为一个实施例，该终端设备500还包括：
判断模块，用于确定该第二终端设备的传输资源是否被其他终端设备使用。
可选地，作为一个实施例，该处理模块520具体用于：
根据该第二终端设备的位置信息，确定与该第二终端设备的距离；
根据与该第二终端设备的距离、该每个第二终端设备的可容忍干扰能力信息，确定该第一终端设备在使用该目标资源时可采用的最大发送功率；
根据该最大发送功率，利用该目标资源进行通信。
可选地，该处理模块520具体用于：
在该最大发送功率大于该终端设备的能够满足通信需求的最小发送功率时，该终端设备利用该目标资源进行D2D通信。
可选地，该处理模块520具体用于：
确定发送功率P，该发送功率P满足min(Prest,Pmax)＞P＞Pmin，其中，Pmax为该最大发送功率，Pmin为该最小发送功率，Prest为该终端设备的当前剩余发送功率；
按照该发送功率P，采用该目标资源进行D2D通信。
可选地，该处理模块520还用于：
在该最大发送功率以及L个该第二终端设备的最大发送功率中的最小值，大于该最小发送功率时，该第一终端设备利用该目标资源进行D2D通信，其中，该目标资源被L个该第二终端设备使用，该L个的最大发送功率分别表示第1至L个第二终端设备在使用该目标资源时可采用的最大发送功率。
可选地，该处理模块520具体用于：
确定发送功率P，该发送功率P满足min(Prest,Pmax,Pmax1,Pmax2,...,PmaxL)＞P＞Pmin，其中，Pmax为该最大发送功率，Pmin为该最小发送功率，L≥1,该Pmax1,Pmax2,...,PmaxL分别表示第1至L个第二终端设备的最大发送功率，Prest为该终端设备的当前剩余发送功率；
按照该发送功率P，采用该目标资源进行D2D通信。
可选地，该终端设备500还包括：
更新模块，用于在采用该目标资源进行D2D通信后，根据该发送功率 更新该终端设备的当前剩余发送功率Prest。
可选地，该更新模块具体用于：
根据以下更新公式确定该第一终端设备的当前剩余发送功率：
Prest＝P′rest-P
其中，该更新公式表示该终端设备在使用目标资源进行通信之后，使用当前的剩余发送功率P′rest减去该发送功率P。
可选地，该处理模块520还用于：
当Prest＜Pmin时，该第一终端设备停止使用该目标资源进行通信。
可选地，该确定模块510具体用于：
接收网络设备发送的该至少一个第二终端设备的信息；或，
接收该至少一个第二终端设备发送的该至少一个第二终端设备的信息。
可选地，该至少一个终端设备利用该目标资源进行D2D通信，和/或与网络设备进行通信。
根据本发明实施例的终端设备500可执行根据本发明实施例的设备到设备D2D中终端设备的通信方法200及其各个实施例，并且该装置500中的各个模块的上述和其它操作和/或功能分别为了实现前述各个方法的相应流程，为了简洁，在此不再赘述。
因此，本发明实施例的终端设备500，通过确定使用目标资源的至少一个第二终端设备的信息，根据该至少一个第二终端设备的信息，利用该目标资源进行D2D通信，能够灵活得分配通信资源，从而提高了频谱资源的利用率。进一步地，第一终端设备能够通过功率控制的方式使用第二终端设备的传输资源进行通信，同时保证了使用第二终端设备的传输资源的其他终端设备能够通信。
前面详细介绍了根据本发明实施例的终端设备，下面将介绍根据本发明实施例的网络设备。
图6示出了根据本发明实施例的网络设备600的示意性框图。如图6所示，该网络设备600包括：
确定模块610，用于确定至少一个第二终端设备的信息，该至少一个第二终端设备的信息用于第一终端设备确定使用的目标资源；
发送模块620，用于向该第一终端设备发送该确定模块610确定的该至少一个第二终端设备的信息。
可选地，该至少一个第二终端设备的信息包括以下中的至少一种：
该至少一个第二终端设备中每个该第二终端设备使用该目标资源的信息、每个该第二终端设备的干扰能力信息，每个该第二终端设备的位置信息。
可选地，每个该第二终端设备使用该目标资源的信息包括该每个第二终端设备所使用的目标资源的资源块占用信息，和该每个第二终端设备利用该目标资源进行传输的可使用的最大发送功率的信息；或，
每个该第二终端设备的干扰能力信息包括：该每个第二终端设备可容忍的最大干扰。
可选地，该确定模块610具体用于：
根据该第二终端设备的位置信息、该第二终端设备的最小通信需求信息、该第二终端设备的资源使用信息，确定该第二终端设备的可容忍干扰能力信息，该第二终端设备的信息包括该可容忍干扰能力信息。
在本发明实施例中，网络设备确定至少一个第二终端设备的信息，该至少一个第二终端设备的信息用于第一终端设备确定使用的目标资源，能够灵活得分配通信资源，从而提高了频谱资源的利用率。
根据本发明实施例的网络设备600可执行根据本发明实施例的设备到设备D2D中终端设备的通信方法400及其各个实施例，并且该装置600中的各个模块的上述和其它操作和/或功能分别为了实现前述各个方法的相应流程，为了简洁，在此不再赘述。
图7示出了本发明的又一实施例提供的终端设备的装置的结构，包括至少一个处理器702(例如CPU)，至少一个网络接口705或者其他通信接口，存储器706，和至少一个通信总线703，用于实现这些装置之间的连接通信。处理器702用于执行存储器706中存储的可执行模块，例如计算机程序。存储器706可能包含高速随机存取存储器(RAM：Random Access Memory)，也可能还包括非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。通过至少一个网络接口705(可以是有线或者无线)实现与至少一个其他网元之间的通信连接。
在一些实施方式中，存储器706存储了程序7061，处理器702执行程序7061，用于执行前述本发明实施例终端设备侧的设备到设备D2D中终端设备的通信方法，为了简洁，这里不作赘述。
图8示出了本发明的又一实施例提供的网络设备的装置的结构，包括至 少一个处理器802(例如CPU)，至少一个网络接口805或者其他通信接口，存储器806，和至少一个通信总线803，用于实现这些装置之间的连接通信。处理器802用于执行存储器806中存储的可执行模块，例如计算机程序。存储器806可能包含高速随机存取存储器(RAM：Random Access Memory)，也可能还包括非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。通过至少一个网络接口805(可以是有线或者无线)实现与至少一个其他网元之间的通信连接。
在一些实施方式中，存储器806存储了程序8061，处理器802执行程序8061，用于执行前述本发明实施例网络设备侧的设备到设备D2D中终端设备的通信方法，为了简洁，这里不作赘述。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本发明的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
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发明的范围。
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，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合 或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，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，本发明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)执行本发明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，仅为本发明的具体实施方式，但本发明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发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (34)

  1. 一种设备到设备D2D中终端设备的通信方法，其特征在于，包括：
    第一终端设备确定使用目标资源的至少一个第二终端设备的信息；
    所述第一终端设备根据所述至少一个第二终端设备的信息，利用所述目标资源进行D2D通信。
  2. 根据权利要求1所述的方法，其特征在于，所述至少一个第二终端设备的信息包括以下中的至少一种：
    所述至少一个第二终端设备中每个所述第二终端设备使用所述目标资源的信息、每个所述第二终端设备的干扰能力信息，每个所述第二终端设备的位置信息。
  3. 根据权利要求2所述的方法，其特征在于，每个所述第二终端设备使用所述目标资源的信息包括所述每个第二终端设备所使用的目标资源的资源块占用信息，和所述每个第二终端设备利用所述目标资源进行传输的可使用的最大发送功率的信息；或，
    每个所述第二终端设备的干扰能力信息包括：所述每个第二终端设备可容忍的最大干扰。
  4. 根据权利要求2或3所述的方法，其特征在于，所述第一终端设备根据所述至少一个第二终端设备的信息，利用所述目标资源进行D2D通信，包括：
    所述第一终端设备根据所述第二终端设备的位置信息，确定与所述第二终端设备的距离；
    所述第一终端设备根据与所述第二终端设备的距离、所述每个第二终端设备的可容忍干扰能力信息，确定所述第一终端设备在使用所述目标资源时可采用的最大发送功率；
    所述第一终端设备根据所述最大发送功率，利用所述目标资源进行通信。
  5. 根据权利要求4所述的方法，其特征在于，所述第一终端设备根据所述最大发送功率，利用所述目标资源进行通信，包括：
    在所述最大发送功率大于所述第一终端设备的能够满足通信需求的最小发送功率时，所述第一终端设备利用所述目标资源进行D2D通信。
  6. 根据权利要求5所述的方法，其特征在于，所述第一终端设备利用 所述目标资源进行通信，包括：
    所述第一终端设备确定发送功率P，所述发送功率P满足min(Prest,Pmax)＞P＞Pmin，其中，Pmax为所述最大发送功率，Pmin为所述最小发送功率，Prest为所述第一终端设备的当前剩余发送功率；
    所述第一终端设备按照所述发送功率P，采用所述目标资源进行D2D通信。
  7. 根据权利要求4所述的方法，其特征在于，在所述目标资源被L个所述第二终端设备使用时，所述第一终端设备根据所述最大发送功率，利用所述目标资源进行通信，包括：
    在所述最大发送功率以及所述L个第二终端设备的最大发送功率中的最小值，大于所述最小发送功率时，所述第一终端设备利用所述目标资源进行D2D通信，其中，所述L个的最大发送功率分别表示第1至L个第二终端设备在使用所述目标资源时可采用的最大发送功率。
  8. 根据权利要求7所述的方法，其特征在于，所述第一终端设备利用所述目标资源进行通信，包括：
    所述第一终端设备确定发送功率P，所述发送功率P满足min(Prest,Pmax,Pmax1,Pmax2,...,PmaxL)＞P＞Pmin，其中，Pmax为所述最大发送功率，Pmin为所述最小发送功率，L≥1,所述Pmax1,Pmax2,...,PmaxL分别表示第1至L个第二终端设备的最大发送功率，Prest为所述第一终端设备的当前剩余发送功率；
    所述第一终端设备按照所述发送功率P，采用所述目标资源进行D2D通信。
  9. 根据权利要求6或8所述的方法，其特征在于，所述方法还包括：
    在采用所述目标资源进行D2D通信后，所述第一终端设备根据所述发送功率更新所述第一终端设备的当前剩余发送功率Prest。
  10. 根据权利要求9所述的方法，所述根据所述发送功率更新所述第一终端设备的当前剩余发送功率Prest，包括：
    所述第一终端设备根据以下更新公式确定所述第一终端设备的当前剩余发送功率：
    Prest＝P′rest-P
    其中，所述更新公式表示所述第一终端设备在使用目标资源进行通信之后，使用当前的剩余发送功率P′rest减去所述发送功率P。
  11. 根据权利要求6、8、9或10中所述的方法，其特征在于，所述方法还包括：
    当Prest＜Pmin时，所述第一终端设备停止使用所述目标资源进行通信。
  12. 根据权利要求1至11中任一项所述的方法，其特征在于，所述第一终端设备确定使用目标资源的至少一个第二终端设备的信息，包括：
    所述第一终端设备接收网络设备发送的所述至少一个第二终端设备的信息；或，
    所述第一终端设备接收所述至少一个第二终端设备发送的所述至少一个第二终端设备的信息。
  13. 根据权利要求1至12中任一项所述的方法，其特征在于，所述至少一个终端设备利用所述目标资源进行D2D通信，和/或与网络设备进行通信。
  14. 一种设备到设备D2D中终端设备的通信方法，其特征在于，包括：
    网络设备确定至少一个第二终端设备的信息，所述至少一个第二终端设备的信息用于第一终端设备确定使用的目标资源；
    所述网络设备向所述第一终端设备发送所述至少一个第二终端设备的信息。
  15. 根据权利要求14所述的方法，其特征在于，所述至少一个第二终端设备的信息包括以下中的至少一种：
    所述至少一个第二终端设备中每个所述第二终端设备使用所述目标资源的信息、每个所述第二终端设备的干扰能力信息，每个所述第二终端设备的位置信息。
  16. 根据权利要求14或15所述的方法，其特征在于，每个所述第二终端设备使用所述目标资源的信息包括所述每个第二终端设备所使用的目标资源的资源块占用信息，和所述每个第二终端设备利用所述目标资源进行传输的可使用的最大发送功率的信息；或，
    每个所述第二终端设备的干扰能力信息包括：所述每个第二终端设备可容忍的最大干扰。
  17. 根据权利要求14至16中任一项所述的方法，其特征在于，所述网络设备确定至少一个第二终端设备的信息，包括：
    所述网络设备根据所述第二终端设备的位置信息、所述第二终端设备的 最小通信需求信息、所述第二终端设备的资源使用信息，确定所述第二终端设备的可容忍干扰能力信息，所述第二终端设备的信息包括所述可容忍干扰能力信息。
  18. 一种终端设备，其特征在于，包括：
    确定模块，用于确定使用目标资源的至少一个第二终端设备的信息；
    处理模块，用于根据所述确定模块确定的所述至少一个第二终端设备的信息，利用所述目标资源进行D2D通信。
  19. 根据权利要求18所述的终端设备，其特征在于，所述至少一个第二终端设备的信息包括以下中的至少一种：
    所述至少一个第二终端设备中每个所述第二终端设备使用所述目标资源的信息、每个所述第二终端设备的干扰能力信息，每个所述第二终端设备的位置信息。
  20. 根据权利要求19所述的终端设备，其特征在于，每个所述第二终端设备使用所述目标资源的信息包括所述每个第二终端设备所使用的目标资源的资源块占用信息，和所述每个第二终端设备利用所述目标资源进行传输的可使用的最大发送功率的信息；或，
    每个所述第二终端设备的干扰能力信息包括：所述每个第二终端设备可容忍的最大干扰。
  21. 根据权利要求18或19所述的终端设备，其特征在于，所述处理模块具体用于：
    根据所述第二终端设备的位置信息，确定与所述第二终端设备的距离；
    根据与所述第二终端设备的距离、所述每个第二终端设备的可容忍干扰能力信息，确定所述第一终端设备在使用所述目标资源时可采用的最大发送功率；
    根据所述最大发送功率，利用所述目标资源进行通信。
  22. 根据权利要求21所述的终端设备，其特征在于，所述处理模块具体用于：
    在所述最大发送功率大于所述终端设备的能够满足通信需求的最小发送功率时，所述终端设备利用所述目标资源进行D2D通信。
  23. 根据权利要求22所述的终端设备，其特征在于，所述处理模块具体用于：
    确定发送功率P，所述发送功率P满足min(Prest,Pmax)＞P＞Pmin，其中，Pmax为所述最大发送功率，Pmin为所述最小发送功率，Prest为所述终端设备的当前剩余发送功率；
    按照所述发送功率P，采用所述目标资源进行D2D通信。
  24. 根据权利要求21所述的终端设备，其特征在于，所述处理模块用于：
    在所述最大发送功率以及L个所述第二终端设备的最大发送功率中的最小值，大于所述最小发送功率时，所述第一终端设备利用所述目标资源进行D2D通信，其中，所述目标资源被L个所述第二终端设备使用，所述L个的最大发送功率分别表示第1至L个第二终端设备在使用所述目标资源时第二终端设备在使用所述目标资源时可采用的最大发送功率。
  25. 根据权利要求24所述的终端设备，其特征在于，所述处理模块具体用于：
    确定发送功率P，所述发送功率P满足min(Prest,Pmax,Pmax1,Pmax2,...,PmaxL)＞P＞Pmin，其中，Pmax为所述最大发送功率，Pmin为所述最小发送功率，L≥1,所述Pmax1,Pmax2,...,PmaxL分别表示第1至L个第二终端设备的最大发送功率，Prest为所述终端设备的当前剩余发送功率；
    按照所述发送功率P，采用所述目标资源进行D2D通信。
  26. 根据权利要求23或25所述的终端设备，其特征在于，所述终端设备还包括：
    更新模块，用于在采用所述目标资源进行D2D通信后，根据所述发送功率更新所述终端设备的当前剩余发送功率Prest。
  27. 根据权利要求26所述的终端设备，所述更新模块具体用于：
    根据以下更新公式确定所述第一终端设备的当前剩余发送功率：
    Prest＝P′rest-P
    其中，所述更新公式表示所述终端设备在使用目标资源进行通信之后，使用当前的剩余发送功率P′rest减去所述发送功率P。
  28. 根据权利要求23、25、26或27中所述的终端设备，其特征在于，所述处理模块还用于：
    当Prest＜Pmin时，所述第一终端设备停止使用所述目标资源进行通信。
  29. 根据权利要求18至28中任一项所述的终端设备，其特征在于，所 述确定模块具体用于：
    接收网络设备发送的所述至少一个第二终端设备的信息；或，
    接收所述至少一个第二终端设备发送的所述至少一个第二终端设备的信息。
  30. 根据权利要求18至29中任一项所述的终端设备，其特征在于，所述至少一个终端设备利用所述目标资源进行D2D通信，和/或与网络设备进行通信。
  31. 一种网络设备，其特征在于，包括：
    确定模块，用于确定至少一个第二终端设备的信息，所述至少一个第二终端设备的信息用于第一终端设备确定使用的目标资源；
    发送模块，用于向所述第一终端设备发送所述确定模块确定的所述至少一个第二终端设备的信息。
  32. 根据权利要求31所述的方法，其特征在于，所述至少一个第二终端设备的信息包括以下中的至少一种：
    所述至少一个第二终端设备中每个所述第二终端设备使用所述目标资源的信息、每个所述第二终端设备的干扰能力信息，每个所述第二终端设备的位置信息。
  33. 根据权利要求31或32所述的方法，其特征在于，每个所述第二终端设备使用所述目标资源的信息包括所述每个第二终端设备所使用的目标资源的资源块占用信息，和所述每个第二终端设备利用所述目标资源进行传输的可使用的最大发送功率的信息；或，
    每个所述第二终端设备的干扰能力信息包括：所述每个第二终端设备可容忍的最大干扰。
  34. 根据权利要求31至33中任一项所述的方法，其特征在于，所述确定模块具体用于：
    根据所述第二终端设备的位置信息、所述第二终端设备的最小通信需求信息、所述第二终端设备的资源使用信息，确定所述第二终端设备的可容忍干扰能力信息，所述第二终端设备的信息包括所述可容忍干扰能力信息。
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