WO2017166022A1 - 终端直通通信方法、终端设备和网络设备 - Google Patents

终端直通通信方法、终端设备和网络设备 Download PDF

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Publication number
WO2017166022A1
WO2017166022A1 PCT/CN2016/077512 CN2016077512W WO2017166022A1 WO 2017166022 A1 WO2017166022 A1 WO 2017166022A1 CN 2016077512 W CN2016077512 W CN 2016077512W WO 2017166022 A1 WO2017166022 A1 WO 2017166022A1
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WIPO (PCT)
Prior art keywords
terminal
attribute information
message
network device
capability information
Prior art date
Application number
PCT/CN2016/077512
Other languages
English (en)
French (fr)
Inventor
曾元清
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 JP2018535870A priority Critical patent/JP6893931B2/ja
Priority to US16/066,053 priority patent/US10887933B2/en
Priority to KR1020187018164A priority patent/KR20180125439A/ko
Priority to EP16895803.1A priority patent/EP3379891B1/en
Priority to PCT/CN2016/077512 priority patent/WO2017166022A1/zh
Priority to CN201680073803.7A priority patent/CN108702800A/zh
Priority to TW106110232A priority patent/TWI730073B/zh
Publication of WO2017166022A1 publication Critical patent/WO2017166022A1/zh
Priority to HK19100758.1A priority patent/HK1258453A1/zh
Priority to US17/101,815 priority patent/US20210076436A1/en

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Classifications

    • 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
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • 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
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular, to a terminal straight-through communication method, a terminal device, and a network device.
  • the device-to-device (D2D) technology refers to a method in which neighboring terminals can transmit data through a direct link in a short range without forwarding through a network device.
  • the D2D technology can share the terminal direct communication technology using the licensed band resources with the cellular system to form a unified hybrid cellular and D2D network.
  • D2D communication the communication between terminals does not pass the scheduling of the network device, which easily causes the failure of data transmission. Therefore, a communication method is needed to improve the success rate of D2D communication.
  • the embodiments of the present invention provide a terminal straight-through communication method, a terminal device, and a network device, which can improve the success rate of data transmission of D2D communication.
  • a D2D communication method includes: the first terminal sends a first message to the network device, where the first message is used to request to acquire attribute information of the second terminal; Receiving a second message sent by the network device, where the second message is used to indicate attribute information of the second terminal; and based on the attribute information of the second terminal, between the first terminal and the second terminal data transmission.
  • the attribute information of the second terminal is first capability information
  • the first capability information is the second terminal and the first The capability information that the terminal performs communication
  • the data transmission between the first terminal and the second terminal includes: performing data transmission between the first terminal and the second terminal based on the first capability information .
  • the attribute information of the second terminal is the second capability information, and the second capability information is that the second terminal communicates with the network device Capability information; data transmission between the first terminal and the second terminal,
  • the first terminal determines, according to the second capability information, first capability information, where the first capability information is capability information that the second terminal communicates with the first terminal; Capability information, data transmission between the first terminal and the second terminal.
  • the first capability information includes the second terminal being in the first terminal At least one of a maximum reception bandwidth, a maximum transmission bandwidth, a maximum data block size that can be transmitted, a maximum data block size that can be received, a number of transmission antennas, and a number of reception antennas when data transmission is performed.
  • the second capability information may include a Packet Data Convergence Protocol (PDCP) layer of the second terminal, a Radio Link Control (RLC) layer, capability information of the physical layer and the radio frequency, and the like.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • the first terminal can improve the success rate of the data communication by requesting the network device to request the attribute information of the second terminal and communicating with the second terminal according to the attribute information of the second terminal, for example, if the attribute
  • the information includes the maximum receiving bandwidth of the second terminal, the maximum data block size that can be received, or the number of receiving antennas, it can be avoided that the bandwidth occupied by the transmitted data is too wide, and the data reception failure of the second terminal caused by the excessive data block is avoided.
  • the attribute information includes the maximum transmission bandwidth of the second terminal, the maximum data block size that can be transmitted, and the number of transmitting antennas, the failure of the first terminal to receive data can be avoided.
  • the first terminal determines the capability information of the second terminal to communicate with the first terminal based on the capability information of the second terminal to communicate with the network device, and can perform D2D communication by referring to the capability information of the cellular network communication, where Try not to change the protocol based on the success rate of D2D communication.
  • the first terminal sends the first message to the network device, including: the first terminal The base station sends an uplink radio resource control RRC message, where the uplink RRC message is used to request to acquire the attribute information of the second terminal, and the first terminal receives the second message sent by the network device, where the first terminal receives the A downlink RRC message sent by the base station, where the downlink RRC message is used to indicate attribute information of the terminal device.
  • the network device including: the first terminal The base station sends an uplink radio resource control RRC message, where the uplink RRC message is used to request to acquire the attribute information of the second terminal, and the first terminal receives the second message sent by the network device, where the first terminal receives the A downlink RRC message sent by the base station, where the downlink RRC message is used to indicate attribute information of the terminal device.
  • the first terminal sends the first message to the network device, including: the first terminal The MME sends an uplink non-access stratum NAS message, where the uplink NAS message is used for requesting And the first terminal receives the second message sent by the network device, where the first terminal receives the downlink RRC message sent by the mobility management entity MME, where the downlink RRC message is used. And indicating attribute information of the terminal device.
  • the second terminal supports a radio frequency bandwidth that is less than or equal to 1.4 MHz.
  • a D2D communication method including: receiving, by a network device, a first message of a first terminal, where the first message is used to request to acquire attribute information of a second terminal; according to the first message, The network device acquires the attribute information of the second terminal; the network device sends a second message to the first terminal, where the second message is used to indicate attribute information of the second terminal, to facilitate the first The terminal sends data to the second terminal according to the attribute information of the second terminal.
  • the attribute information of the second terminal is first capability information
  • the first capability information is the second terminal and the first The capability information of the terminal to communicate.
  • the first capability information includes, when the second terminal performs data transmission with the first terminal, At least one of a maximum receiving bandwidth, a maximum transmission bandwidth, a maximum data block size that can be transmitted, a maximum data block size that can be received, a number of transmitting antennas, and a number of receiving antennas.
  • the attribute information of the second terminal is the second capability information
  • the second capability information is that the second terminal communicates with the network device Ability information
  • the network device is a base station, and the network device receives the first message sent by the first terminal, The base station receives an uplink radio resource control RRC message sent by the first terminal, where the uplink RRC message is used to request to acquire the attribute information of the second terminal, and the network device acquires the attribute of the second terminal.
  • the base station receives an uplink radio resource control RRC message sent by the first terminal, where the uplink RRC message is used to request to acquire the attribute information of the second terminal, and the network device acquires the attribute of the second terminal.
  • the information includes: obtaining attribute information of the second terminal that is stored locally, or requesting attribute information of the second terminal from the MME; and sending, by the network device, the second message to the second terminal, including: the base station Sending a downlink RRC message to the first terminal, where the downlink RRC message is used to indicate the attribute information of the second terminal.
  • the network device is a mobility management entity MME, and the network device receives
  • the first message sent by the first terminal includes: the MME receiving an uplink non-access stratum NAS message sent by the first terminal, where the uplink NAS message is used to request to acquire the attribute information of the second terminal;
  • the acquiring, by the network device, the attribute information of the second terminal includes: acquiring attribute information of the second terminal stored locally, or requesting attribute information of the second terminal from the NAS;
  • the second terminal sends the second message, where the MME sends a downlink NAS message to the first terminal, where the NSA response message is used to indicate the attribute information of the second terminal.
  • the second terminal supports a radio frequency bandwidth that is less than or equal to 1.4 MHz.
  • a terminal for performing the method of any of the foregoing first aspect or any optional implementation of the first aspect.
  • the communication device comprises a modular unit for performing the method of the first aspect or any of the possible implementations of the first aspect described above.
  • a network device for performing the method of any of the foregoing second aspect or any alternative implementation of the second aspect.
  • the communication device comprises a modular unit for performing the method of any of the possible implementations of the second aspect or the second aspect described above.
  • a terminal comprising: a memory for storing an instruction, the processor for executing an instruction stored by the memory, and the executing when the processor executes the instruction stored by the memory
  • the processor is caused to perform the method of the first aspect or any alternative implementation of the first aspect.
  • a network device comprising: a memory for storing instructions for executing instructions stored in the memory, and a processor, and when the processor executes the instructions stored by the memory, Executing the method of causing the processor to perform the second aspect or any alternative implementation of the second aspect.
  • a computer storage medium having stored therein program code for indicating a method of performing the above first aspect or any alternative implementation of the first aspect.
  • a computer storage medium having stored therein program code for indicating a method of performing the second aspect or any alternative implementation of the second aspect.
  • FIG. 1 is a diagram of an application scenario according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a D2D communication method according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a D2D communication method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a D2D communication method according to an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a terminal according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a network device according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a terminal according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a network device according to an embodiment of the present application.
  • a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and a computing device can be a component.
  • One or more components can reside within a process and/or execution thread, and the components can be located on one computer and/or distributed between two or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on signals having one or more data packets (eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems) Communicate through local and/or remote processes.
  • data packets eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems
  • a computer readable medium can include, but is not limited to: Magnetic storage devices (for example, hard disks, floppy disks or tapes, etc.), optical disks (for example, CD (Compact Disk), DVD (Digital Versatile Disk), etc., smart cards and flash memory devices (for example, EPROM (Erasable) Programmable Read-Only Memory, EEPROM, card, stick or key drive, etc.).
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, without limitation, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.
  • the terminal device in the embodiment of the present application may also be referred to as an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a user equipment (User Equipment, UE), and a terminal. , a wireless communication device, a user agent, or a user device.
  • the access terminal may be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), and a wireless communication.
  • the base station may be a BTS (Base Transceiver Station) in GSM (Global System of Mobile communication) or CDMA (Code Division Multiple Access), or may be WCDMA (Wideband Code Division Multiple Access,
  • the NB NodeB, Base Station
  • LTE Wideband Code Division Multiple Access
  • the network device may be a base station, a Mobility Management Entity (MME), an in-vehicle device, a wearable device, and a network device in a future 5G network.
  • MME Mobility Management Entity
  • FIG. 1 is a schematic diagram of an application scenario 100 according to an embodiment of the present application.
  • the UE 102, the UE 103, and the UE 104 are in the coverage of the base station 101, and the UE 102, the UE 103, and the UE 104 can directly communicate with the base station, and the UE 102, the UE 103, and the UE 104 perform D2D communication; the UE 105 and the UE 106 are not under the coverage of the base station.
  • D2D communication may be directly performed between the UE 105 and the UE 106, or D2D communication may be performed with the UE 102, the UE 103, and the UE 104.
  • D2D technology's short-range communication characteristics and direct communication methods have the following advantages:
  • the terminal short-distance direct communication mode can achieve higher data rate, lower delay and lower power consumption
  • the direct communication method of D2D can adapt to the local data sharing requirements of services such as wireless P2P, and provide data services with flexible adaptability;
  • D2D direct communication can utilize a large number of widely distributed communication terminals in the network to expand the coverage of the network.
  • terminals can communicate in two different modes. First, the cellular communication mode: the terminal communicates through the base station; second, the D2D mode: the terminal directly communicates using the D2D link. In the hybrid network, some terminals still forward and communicate information through the base station in the cellular communication mode, and some terminals directly transmit data in the terminal direct mode.
  • the D2D is not only used for public security services, but also for a wide range of applications and commercial scenarios to address real-world issues such as coverage extension and device power saving.
  • the coverage enhancement can be implemented by the terminal relay technology, and the terminal outside the coverage of the cellular network can implement data communication with the network through the relay, and the extension of the network coverage is realized in a certain sense.
  • the use of similar short-range communication can save the transmission power of the terminal, which is beneficial to extend the battery life of the terminal.
  • MTC Machine Type Communication
  • LTE Long Term Evolution
  • MTC terminal may have some of the characteristics of M2M (Machine to Machine) communication characteristics, such as low mobility, small amount of transmitted data, insensitivity to communication delay, and extremely low requirements.
  • M2M Machine to Machine
  • features such as power consumption.
  • a new terminal type will be defined, and both uplink and downlink support only 1.4 MHz RF bandwidth or lower system bandwidth, for example, 200 KHz.
  • the embodiment of the present application provides a D2D communication method, a terminal device, and a network device.
  • FIG. 2 is a schematic flowchart of a D2D communication method according to an embodiment of the present application.
  • the first terminal sends a first message to the network device, where the first message is used to request to acquire attribute information of the second terminal.
  • the first message may carry the identifier of the second terminal and the requested content.
  • the network device acquires the first message after receiving the first message sent by the first terminal.
  • the attribute information of the terminal is
  • the network device sends a second message to the first terminal, where the second message carries the attribute information of the first terminal.
  • the network device may send the second message by using a transparent container or an explicit cell.
  • the first terminal after receiving the second message sent by the network device, the first terminal performs data transmission with the second terminal.
  • the first terminal may send data to the second terminal by using a PC5 interface.
  • the PC5 interface is a communication interface between terminals.
  • the attribute information of the second terminal is the first capability information, where the first capability information is capability information that the second terminal communicates with the first terminal; and based on the first capability information, the first terminal is Data transmission is performed between the second terminals.
  • the network device can directly notify the first terminal of the capability information for the second terminal to communicate with the first terminal, and the first terminal can directly perform data according to the capability information of the second terminal communicating with the first terminal. Transmission.
  • the attribute information of the second terminal is the second capability information, where the second capability information is capability information that the second terminal communicates with the network device; the first terminal determines the first information based on the second capability information.
  • the capability information, the first capability information is capability information for the second terminal to communicate with the first terminal; and based on the first capability information, data is transmitted between the first terminal and the second terminal.
  • the network device may notify the first terminal of the capability information that the second terminal communicates with the network device, and the first terminal may determine, according to the capability information that the second terminal communicates with the network device, the second terminal and the first The capability information of the terminal to communicate.
  • the first terminal may directly determine the capability information of the second terminal to communicate with the network device as the capability information of the second terminal to communicate with the first terminal.
  • the first terminal may directly use the capability information of the second terminal to communicate with the network device as capability information for communicating between the second terminal and the first terminal.
  • the first capability information includes a maximum receiving bandwidth, a maximum sending bandwidth, a maximum data block size that can be sent, a maximum data block size that can be received, and a second terminal when the second terminal performs data transmission with the first terminal. At least one of the number of antennas and the number of receiving antennas.
  • the second capability information may include a packet data convergence protocol of the second terminal (Packet) Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, physical layer and radio frequency capability information.
  • Packet Packet Data convergence protocol of the second terminal
  • RLC Radio Link Control
  • the first terminal can improve the success rate of the data communication by requesting the network device to request the attribute information of the second terminal and communicating with the second terminal according to the attribute information of the second terminal, for example, if the attribute
  • the information includes the maximum receiving bandwidth of the second terminal, the maximum data block size that can be received, or the number of receiving antennas, it can be avoided that the bandwidth occupied by the transmitted data is too wide, and the data reception failure of the second terminal caused by the excessive data block is avoided.
  • the attribute information includes the maximum transmission bandwidth of the second terminal, the maximum data block size that can be transmitted, and the number of transmitting antennas, the failure of the first terminal to receive data can be avoided.
  • the first terminal determines the capability information of the second terminal to communicate with the first terminal based on the capability information of the second terminal to communicate with the network device, and can perform D2D communication by referring to the capability information of the cellular network communication, where Try not to change the protocol based on the success rate of D2D communication.
  • the network device in this embodiment of the present application may be a base station, an MME, or other network device.
  • a communication method for D2D according to an embodiment of the present application will be described below with reference to FIG. 3 and FIG. 4 respectively, taking a network device as a base station and an MME as an example.
  • FIG. 3 is a schematic flowchart of a communication method 300 for D2D according to an embodiment of the present application.
  • an uplink RRC message is sent to the base station, for requesting the attribute information of the second terminal.
  • the uplink RRC message may be a sidelink UEinformation message, or any other uplink RRC message.
  • the base station determines whether the attribute information of the second terminal is stored locally, and if it is stored, executes 380. If not, performs 330. .
  • RRC radio resource control
  • the base station determines that the attribute information of the second terminal is not stored, and sends a request message to the Mobility Management Entity (MME), where the request message may be an S1 message, and is used to request attribute information of the second terminal.
  • MME Mobility Management Entity
  • the MME may determine whether the attribute information of the second terminal is stored locally. If the storage is performed 370, if not, the process 350 is performed.
  • the MME determines that the attribute information of the second terminal is not stored, and serves the home subscriber.
  • a Home Subscriber Server (HSS) sends a request message for requesting attribute information of the second terminal.
  • the HSS acquires the attribute information of the second terminal, and sends a response message to the MME, carrying the attribute information of the second terminal.
  • the MME obtains the attribute information of the second terminal locally or after receiving the attribute information sent by the HSS, and sends a response message to the base station, where the response message is used to carry the attribute information of the second terminal.
  • the base station obtains the attribute information of the second terminal locally or after receiving the attribute information sent by the MME, and sends a downlink RRC message to the first terminal, where the downlink RRC message carries the attribute information of the second terminal.
  • the downlink RRC message is an RRC reconfiguration message.
  • the first terminal communicates with the second terminal according to the attribute information of the second terminal.
  • FIG. 4 is a schematic flow chart of a communication method 400 for D2D according to an embodiment of the present application.
  • NAS non-access stratum
  • the MME determines whether the attribute information of the second terminal is stored locally, if it is stored, executes 460, and if not, executes 430.
  • the MME determines that the attribute information of the second terminal is not stored, and sends a request message to the HSS for requesting the attribute information of the second terminal.
  • the HSS acquires the attribute information of the second terminal, and sends a response message to the MME, carrying the attribute information of the second terminal.
  • the MME obtains the attribute information of the second terminal locally or after receiving the attribute information sent by the HSS, and sends a downlink NAS message to the first terminal, where the downlink NAS message carries the attribute information of the second terminal.
  • the downlink NAS message is a UE information response.
  • the MME may send the attribute information to the UE by using a downlink NAS message in an RRC transparent container manner.
  • the first terminal communicates with the second terminal according to the attribute information of the second terminal.
  • the identifier of the second terminal and the need for the second terminal may be carried.
  • the identifier of the second terminal and the value of the requested content object may be carried.
  • FIG. 5 is a schematic block diagram of a terminal 500 according to an embodiment of the present application.
  • the terminal 500 includes: a sending unit 510, configured to send a first message to the network device, where the first message is used to request to acquire attribute information of the second terminal, and the receiving unit 520 is configured to receive, by the network device, The second message is used to indicate the attribute information of the second terminal.
  • the data transmission unit 530 is configured to perform terminal-connected D2D communication with the second terminal based on the attribute information of the second terminal.
  • the attribute information of the second terminal is the first capability information, where the first capability information is capability information of the second terminal communicating with the terminal; the data transmission unit 530 is specifically configured to: based on the first capability Information is transmitted between the second terminal and the second terminal.
  • the attribute information of the second terminal is the second capability information, where the second capability information is the capability information of the second terminal to communicate with the network device;
  • the data transmission unit 530 is specifically configured to: based on the second capability And determining, by the first capability information, the capability information that the second terminal communicates with the data transmission unit is based on the first capability information, and performs data transmission with the second terminal.
  • the first capability information includes a maximum receiving bandwidth, a maximum sending bandwidth, a maximum data block size that can be sent, a maximum data block size that can be received, and a second terminal when the second terminal performs data transmission with the data transmission unit. At least one of the number of antennas and the number of receiving antennas.
  • the sending unit 510 is specifically configured to: send an uplink radio resource control RRC message to the base station, where the uplink RRC message is used to request to obtain the attribute information of the second terminal; the receiving unit 520 is specifically configured to: receive the base station to send The downlink RRC message is used to indicate attribute information of the terminal device.
  • the sending unit 510 is specifically configured to: send an uplink non-access stratum NAS message to the mobility management entity MME, where the uplink NAS message is used to request to obtain the attribute information of the second terminal; the receiving unit 520 is specifically configured to: Receiving a downlink RRC message sent by the MME, where the downlink RRC message is used to indicate attribute information of the terminal device.
  • the second terminal supports an RF bandwidth less than or equal to 1.4 MHz.
  • terminal 500 may correspond to the first terminal in the foregoing method embodiment, and the corresponding operation of the first terminal may be implemented. For brevity, details are not described herein again.
  • FIG. 6 is a schematic block diagram of a network device 600 in accordance with an embodiment of the present application.
  • the network device 600 includes: a receiving unit 610, configured to receive a first message of the first terminal, where the first message is used to request to obtain the attribute information of the second terminal, and the acquiring unit 620 is configured to acquire the first message according to the first message.
  • the attribute information of the second terminal is used by the sending unit 630, configured to send a second message to the first terminal, where the second message is used to indicate attribute information of the second terminal, so that the first terminal is configured according to the second terminal
  • the attribute information is connected to the second terminal for D2D communication with the terminal.
  • the attribute information of the second terminal is the first capability information, where the first capability information is capability information that the second terminal communicates with the first terminal.
  • the first capability information includes a maximum receiving bandwidth, a maximum sending bandwidth, a maximum data block size that can be sent, a maximum data block size that can be received, and a second terminal when the second terminal performs data transmission with the first terminal. At least one of the number of antennas and the number of receiving antennas.
  • the attribute information of the second terminal is the second capability information, where the second capability information is capability information that the second terminal communicates with the network device 600.
  • the network device 600 is a base station, where the receiving unit 610 is configured to: receive an uplink radio resource control RRC message sent by the first terminal, where the uplink RRC message is used to request to acquire the attribute information of the second terminal;
  • the obtaining unit 620 is specifically configured to: obtain the attribute information of the second terminal that is stored locally, or request the attribute information of the second terminal from the MME;
  • the sending unit 630 is specifically configured to: send a downlink RRC message to the first terminal, where The downlink RRC message is used to indicate the attribute information of the second terminal.
  • the network device 600 is a mobility management entity MME; the receiving unit 610 is specifically configured to: receive an uplink NAS message sent by the first terminal, where the uplink NAS message is used to request to acquire the attribute information of the second terminal; The obtaining unit 620 is specifically configured to: obtain the attribute information of the second terminal that is stored locally, or request the attribute information of the second terminal from the NAS; the sending unit 630 is specifically configured to: send the downlink non-access to the first terminal.
  • the layer NAS message, the NSA response message is used to indicate the attribute information of the second terminal.
  • the second terminal supports an RF bandwidth less than or equal to 1.4 MHz.
  • network device 600 may correspond to the network device in the foregoing method embodiment, and the corresponding operations of the network device may be implemented. For brevity, details are not described herein again.
  • FIG. 7 is a schematic block diagram of a terminal 700 according to an embodiment of the present application.
  • the terminal 700 includes a processor 710 and a memory 720.
  • the memory 720 is configured to store program instructions.
  • the processor 710 can call the program instructions stored in the memory 720, which can be the corresponding operations of the first terminal in the method embodiment.
  • the terminal 700 also includes a transceiver 730 for external communication, and for storing the processor 710, storing A bus system 740 in which 720 and transceiver 730 are interconnected.
  • the processor 710 is configured to invoke an instruction stored in the memory 720, and perform the following operations: using the transceiver 730 to send a first message to the network device, where the first message is used to request to acquire attribute information of the second terminal; and the network is received by the transceiver 730. And a second message sent by the device, where the second message is used to indicate attribute information of the second terminal; and based on the attribute information of the second terminal, data transmission is performed between the transceiver 730 and the second terminal.
  • the attribute information of the second terminal is first capability information, where the first capability information is capability information that the second terminal communicates with the terminal 700; the processor 710 is configured to invoke an instruction stored in the memory 720. The following operations are performed: based on the first capability information, data transmission is performed between the transceiver 730 and the second terminal.
  • the attribute information of the second terminal is the second capability information, where the second capability information is capability information for the second terminal to communicate with the network device, and the processor 710 is configured to invoke the instruction stored in the memory 720 to execute The following operations are performed: determining, according to the second capability information, first capability information, where the second capability information is capability information for the second terminal to communicate with the terminal 700; and using the transceiver 730 and the first capability information based on the first capability information Data transmission between the two terminals.
  • the first capability information includes a maximum receiving bandwidth, a maximum sending bandwidth, a maximum data block size that can be sent, a maximum data block size that can be received, and a transmitting antenna when the second terminal performs data transmission with the terminal 700. At least one of the number and the number of receiving antennas.
  • the processor 710 is configured to invoke the instruction stored in the memory 720, and perform the following operations: using the transceiver 730 to send an uplink radio resource control RRC message to the base station, where the uplink RRC message is used to request to obtain the attribute information of the second terminal. And receiving, by the transceiver 730, a downlink RRC message sent by the base station, where the downlink RRC message is used to indicate attribute information of the terminal device.
  • the processor 710 is configured to invoke the instruction stored in the memory 720, and perform the following operations: using the transceiver 730 to send an uplink non-access stratum NAS message to the MME, where the uplink NAS message is used to request to acquire the attribute of the second terminal.
  • the downlink RRC message sent by the mobility management entity MME is received by the transceiver 730, where the downlink RRC message is used to indicate attribute information of the terminal device.
  • the second terminal supports an RF bandwidth less than or equal to 1.4 MHz.
  • terminal 700 may correspond to the first terminal in the foregoing method embodiment, and the corresponding operations of the first terminal may be implemented. For brevity, details are not described herein again.
  • FIG. 8 is a schematic block diagram of a network device 800 in accordance with an embodiment of the present application.
  • the terminal 800 package A processor 810 and a memory 820 are included.
  • the memory 820 is configured to store program instructions.
  • the processor 810 can call the program instructions stored in the memory 820, which can be the corresponding operations of the network device in the method embodiment.
  • the network device 800 also includes a transceiver 830 for external communication, and a bus system 840 for interconnecting the processor 810, the memory 820, and the transceiver 830.
  • the processor 810 is configured to invoke the instruction stored in the memory 820, and perform the following operations: receiving, by the transceiver 830, a first message of the first terminal, where the first message is used to request to acquire attribute information of the second terminal; Attribute information of the second terminal, the second message is sent to the first terminal by using the transceiver 830, the second message is used to indicate attribute information of the second terminal, so that the first terminal is configured according to the second terminal The attribute information sends data to the second terminal.
  • the attribute information of the second terminal is the first capability information, where the first capability information is capability information that the second terminal communicates with the first terminal.
  • the first capability information includes a maximum receiving bandwidth, a maximum sending bandwidth, a maximum data block size that can be sent, a maximum data block size that can be received, and a second terminal when the second terminal performs data transmission with the first terminal. At least one of the number of antennas and the number of receiving antennas.
  • the attribute information of the second terminal is the second capability information, where the second capability information is capability information that the second terminal communicates with the network device 800.
  • the network device 800 is a base station; the processor 810 is configured to invoke an instruction stored in the memory 820, and perform the following operations: receiving, by using the transceiver 830, the first message sent by the first terminal, where the base station receives the first
  • the uplink radio resource control RRC message sent by the terminal the uplink RRC message is used to request to acquire the attribute information of the second terminal, obtain the attribute information of the second terminal stored locally, or request the attribute information of the second terminal from the MME;
  • the downlink RRC message is sent to the first terminal by using the transceiver 830, where the downlink RRC message is used to indicate the attribute information of the second terminal.
  • the network device 800 is a mobility management entity MME.
  • the processor 810 is configured to invoke an instruction stored in the memory 820, and perform the following operations: receiving, by using the transceiver 830, an uplink non-access stratum NAS message sent by the first terminal, where The uplink NAS message is used to request the acquisition of the attribute information of the second terminal.
  • the downlink NAS message is sent to the first terminal by using the transceiver 830, where the NSA response message is used to indicate the attribute information of the second terminal.
  • the second terminal supports an RF bandwidth less than or equal to 1.4 MHz.
  • network device 800 may correspond to the network device in the foregoing method embodiment, and the corresponding operations of the network device may be implemented. For brevity, details are not described herein again.
  • 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 an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present 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. .

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Abstract

本发明实施例提供了一种终端直通通信方法、终端设备和网络设备。该方法包括：第一终端向网络设备发送第一消息，所述第一消息用于请求获取第二终端的属性信息；所述第一终端接收网络设备发送的第二消息，所述第二消息用于指示所述第二终端的属性信息；基于所述第二终端的属性信息，所述第一终端与所述第二终端之间进行数据传输。本申请实施例能够提高D2D通信的数据传输的成功率。

Description

终端直通通信方法、终端设备和网络设备 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及一种终端直通通信方法、终端设备和网络设备。
背景技术
终端直通(Device-to-Device，D2D)技术是指邻近的终端可以在近距离范围内通过直连链路进行数据传输的方式，而不需要通过网络设备进行转发。
其中，D2D技术可以与蜂窝系统共享使用授权频带资源的终端直通技术，形成统一的混合蜂窝与D2D网络。
由于D2D通信中，终端之间的通信不经过网络设备的调度，容易造成数据传输的失败，因此，亟需一种通信方法，来提高D2D通信的成功率。
发明内容
本发明实施例提供一种终端直通通信方法、终端设备和网络设备，能够提高D2D通信的数据传输的成功率。
第一方面，提供了一种D2D通信方法，其特征在于，包括：第一终端向网络设备发送第一消息，所述第一消息用于请求获取第二终端的属性信息；所述第一终端接收网络设备发送的第二消息，所述第二消息用于指示所述第二终端的属性信息；基于所述第二终端的属性信息，所述第一终端与所述第二终端之间进行数据传输。
结合第一方面，在第一方面的第一种可能的实现方式中，所述第二终端的属性信息为第一能力信息，所述第一能力信息为所述第二终端与所述第一终端进行通信的能力信息；所述第一终端与所述第二终端之间进行数据传输，包括：基于所述第一能力信息，所述第一终端与所述第二终端之间进行数据传输。
结合第一方面，在第一方面的第二种可能的实现方式中，所述第二终端的属性信息为第二能力信息，所述第二能力信息为所述第二终端与网络设备进行通信的能力信息；所述第一终端与所述第二终端之间进行数据传输，包 括：所述第一终端基于所述第二能力信息，确定第一能力信息，所述第一能力信息为所述第二终端与所述第一终端进行通信的能力信息；基于所述第一能力信息，所述第一终端与所述第二终端之间进行数据传输。
结合第一方面的第一种或第二种可能的实现方式，在第一方面的第三种可能的实现方式中，所述第一能力信息包括所述第二终端在与所述第一终端进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
可选地，第二能力信息可以包括第二终端的分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路控制(Radio Link Control，RLC)层、物理层和射频的能力信息等。
因此，在D2D通信过程中，第一终端通过向网络设备请求第二终端的属性信息，根据第二终端的属性信息，与第二终端进行通信，可以提高数据通信的成功率，例如，如果属性信息包括第二终端的最大接收带宽、能够接收的最大数据块大小或接收天线数量时，可以避免由于发送的数据占据的带宽过宽，数据块过大所造成的第二终端的数据接收失败，例如，如果属性信息包括第二终端的最大发送带宽、能够发送的最大数据块大小、发送天线数量，可以避免第一终端接收数据的失败。
进一步地，第一终端基于第二终端与网络设备进行通信的能力信息，来确定第二终端与第一终端进行通信的能力信息，可以参考蜂窝网络通信的能力信息，来进行D2D通信，可以在尽量不改变协议的基础上，提高D2D通信的成功率。
结合第一方面或其上述任一种可能的实现方式，在第一方面的第四种可能的实现方式中，所述第一终端向网络设备发送第一消息，包括：所述第一终端向基站发送上行无线资源控制RRC消息，所述上行RRC消息用于请求获取所述第二终端的属性信息；所述第一终端接收网络设备发送的第二消息，包括：所述第一终端接收所述基站发送的下行RRC消息，所述下行RRC消息用于指示所述终端设备的属性信息。
结合第一方面或其上述任一种可能的实现方式，在第一方面的第五种可能的实现方式中，所述第一终端向网络设备发送第一消息，包括：所述第一终端向MME发送上行非接入层NAS消息，所述上行NAS消息用于请求获 取所述第二终端的属性信息；所述第一终端接收网络设备发送的第二消息，包括：所述第一终端接收所述移动管理实体MME发送的下行RRC消息，所述下行RRC消息用于指示所述终端设备的属性信息。
结合第一方面或其上述任一种可能的实现方式，在第一方面的第六种可能的实现方式中，所述第二终端支持的射频带宽小于或等于1.4MHZ。
第二方面，提供了一种D2D通信方法，包括：网络设备接收第一终端的第一消息，所述第一消息用于请求获取第二终端的属性信息；根据所述第一消息，所述网络设备获取所述第二终端的属性信息；所述网络设备向所述第一终端发送第二消息，所述第二消息用于指示所述第二终端的属性信息，以便于所述第一终端根据所述第二终端的所述属性信息，向所述第二终端发送数据。
结合第二方面，在第二方面的第一种可能的实现方式中，所述第二终端的属性信息为第一能力信息，所述第一能力信息为所述第二终端与所述第一终端进行通信的能力信息。
结合第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述第一能力信息包括所述第二终端在与所述第一终端进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
结合第二方面，在第二方面的第三种可能的实现方式中，所述第二终端的属性信息为第二能力信息，所述第二能力信息为所述第二终端与网络设备进行通信的能力信息。
结合第二方面或其上述任一种可能的实现方式，在第二方面的第四种可能的实现方式中，所述网络设备为基站；所述网络设备接收第一终端发送的第一消息，包括：所述基站接收所述第一终端发送的上行无线资源控制RRC消息，所述上行RRC消息用于请求获取第二终端的所述属性信息；所述网络设备获取所述第二终端的属性信息，包括：获取本地存储的所述第二终端的属性信息，或向MME请求所述第二终端的属性信息；所述网络设备向所述第二终端发送第二消息，包括：所述基站向所述第一终端发送下行RRC消息，所述下行RRC消息用于指示所述第二终端的所述属性信息。
结合第二方面或其上述任一种可能的实现方式，在第二方面的第五种可能的实现方式中，所述网络设备为移动管理实体MME；所述网络设备接收 第一终端发送的第一消息，包括：所述MME接收所述第一终端发送的上行非接入层NAS消息，所述上行NAS消息用于请求获取所述第二终端的所述属性信息；所述网络设备获取所述第二终端的属性信息，包括：获取本地存储的所述第二终端的属性信息，或向NAS请求所述第二终端的属性信息；所述网络设备向所述第二终端发送第二消息，包括：所述MME向所述第一终端发送下行NAS消息，所述NSA响应消息用于指示所述第二终端的所述属性信息。
结合第二方面或其上述任一种可能的实现方式，在第二方面的第六种可能的实现方式中，所述第二终端支持的射频带宽小于或等于1.4MHZ。
第三方面，提供了一种终端，用于执行上述第一方面或第一方面的任意可选的实现方式中的方法。具体地，该通信设备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模块单元。
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选的实现方式中的方法。具体地，该通信设备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模块单元。
第五方面，提供了一种终端，包括：存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且当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选的实现方式中的方法。
第六方面，提高了一种网络设备，包括：存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且当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选的实现方式中的方法。
第七方面，提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第一方面或第一方面的任意可选的实现方式中的方法。
第八方面，提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第二方面或第二方面的任意可选的实现方式中的方法。
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是根据本申请实施例的应用场景图。
图2是根据本申请实施例的D2D通信方法的示意性流程图。
图3是根据本申请实施例的D2D通信方法的示意性流程图。
图4是根据本申请实施例的D2D通信方法的示意性流程图。
图5是根据本申请实施例的终端的示意性框图。
图6是根据本申请实施例的网络设备的示意性框图。
图7是根据本申请实施例的终端的示意性框图。
图8是根据本申请实施例的网络设备的示意性框图。
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做出创造性劳动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。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于: 磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，CD(Compact Disk，压缩盘)、DVD(Digital Versatile Disk，数字通用盘)等)，智能卡和闪存器件(例如，EPROM(Erasable Programmable Read-Only Memory，可擦写可编程只读存储器)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
本申请实施例中的终端设备也可以称为接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、用户设备(User Equipment，UE)、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、SIP(Session Initiation Protocol，会话启动协议)电话、WLL(Wireless Local Loop，无线本地环路)站、PDA(Personal Digital Assistant，个人数字处理)、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。基站可以是GSM(Global System of Mobile communication，全球移动通讯)或CDMA(Code Division Multiple Access，码分多址)中的BTS(Base Transceiver Station，基站)，也可以是WCDMA(Wideband Code Division Multiple Access，宽带码分多址)中的NB(NodeB，基站)，还可以是LTE(Long Term Evolution，长期演进)中的eNB或eNodeB(Evolutional Node B，演进型基站)，或者中继站或接入点。网络设备可以是基站、移动管理实体(Mobility Management Entity，MME)、车载设备、可穿戴设备以及未来5G网络中的网络设备等。
图1是根据本申请实施例的应用场景100的示意性图。在图1中，UE102、UE103、UE104在基站101的覆盖范围下，UE102、UE103和UE104可以与基站直接通信，UE102、UE103和UE104之间进行D2D通信；UE105和UE106不在基站的覆盖范围下，UE105和UE106之间可以直接进行D2D通信，或者与UE102、UE103和UE104之间进行D2D通信。
D2D技术本身的短距离通信特点和直接通信方式使其具有如下优势：
1.终端近距离直接通信方式可实现较高的数据速率、较低的延迟和较低的功耗；
2.利用网络中广泛分布的终端以及D2D通信链路的短距离特点，可以实 现频谱资源的有效利用，获得资源空分复用增益；
3.D2D的直接通信方式能够适应如无线P2P等业务的本地数据共享需求，提供具有灵活适应能力的数据服务；
4.D2D直接通信能够利用网络中数量庞大且分布广泛的通信终端以拓展网络的覆盖范围。
在混合蜂窝与D2D网络下，终端可以以两种不同的模式通信。其一，蜂窝通信模式：终端通过基站进行通信；其二，D2D模式：终端使用D2D链路直接通信。在该混合网络中，部分终端仍以蜂窝通信模式通过基站进行信息转发和通信，部分终端则以终端直通模式进行数据的直接传输。
D2D不仅用于公共安全业务，也可以广泛的应用与商用场景中，用以解决覆盖延伸、设备省电等现实问题。例如，通过终端中继技术可以实现覆盖增强，蜂窝网络覆盖之外的终端可以通过中继实现与网络的数据通信，一定意义上实现了网络覆盖的延伸。另外，采用类似短距通信可以节省终端的发送功率，有利于延长终端的电池寿命。
随着物联网的兴起，在长期演进系统(LTE，Long Term Evolution)系统中支持机器类通信(MTC，Machine Type Communication)越来越受到重视。在3GPP Release 13立项了针对MTC的物理层增强项目。一台MTC设备(MTC终端)可能具有多种M2M(Machine to Machine，机器与机器)通信特性之中的部分特性，如低移动性、传输数据量小、对通信时延不敏感、要求极低功耗等特征。其中，为了降低MTC终端的成本，将新定义一种终端类型，其上行和下行均只支持1.4MHz射频带宽或者更低的系统带宽，例如200KHz。
在D2D的通信过程中，当发送终端不知道接收终端的属性信息时，数据传输可能会超出接收终端的接收限制，例如超出接收带宽，或者最大接收块大小等，导致接收终端不能正确的接收数据。因此，本申请实施例提供了一种D2D通信方法、终端设备和网络设备。
图2是根据本申请实施例的D2D通信方法的示意性流程图。
在210中，第一终端向网络设备发送第一消息，所述第一消息用于请求获取第二终端的属性信息。
可选地，该第一消息可以携带第二终端的标识和请求的内容。
在220中，网络设备在接收到第一终端发送的第一消息之后，获取第一 终端的属性信息。
在230中，网络设备向第一终端发送第二消息，该第二消息携带第一终端的属性信息。
可选地，网络设备可以通过透明容器或是显式信元的方式发送该第二消息。
在240中，所述第一终端接收网络设备发送的第二消息之后，与第二终端之间进行数据传输。
可选地，在本申请实施例中，第一终端可以通过PC5接口向第二终端发送数据。其中，PC5接口为终端之间的通信接口。
可选地，该第二终端的属性信息为第一能力信息，该第一能力信息为该第二终端与该第一终端进行通信的能力信息；基于该第一能力信息，该第一终端与该第二终端之间进行数据传输。
也就是说，网络设备可以直接将第二终端与第一终端进行通信的能力信息通知给第一终端，由此第一终端可以直接根据第二终端与第一终端进行通信的能力信息，进行数据的传输。
可选地，该第二终端的属性信息为第二能力信息，该第二能力信息为该第二终端与网络设备进行通信的能力信息；该第一终端基于该第二能力信息，确定第一能力信息，该第一能力信息为该第二终端与该第一终端进行通信的能力信息；基于该第一能力信息，该第一终端与该第二终端之间进行数据传输。
也就是说，网络设备可以将第二终端与网络设备进行通信的能力信息通知给第一终端，第一终端可以基于第二终端与网络设备进行通信的能力信息，来确定第二终端与第一终端进行通信的能力信息。
例如，第一终端可以直接将第二终端与网络设备进行通信的能力信息，确定为第二终端与第一终端进行通信的能力信息。例如，第一终端可以将第二终端与网络设备进行通信的能力信息，直接作为第二终端与第一终端之间进行通信的能力信息。
可选地，该第一能力信息包括该第二终端在与该第一终端进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
可选地，第二能力信息可以包括第二终端的分组数据汇聚协议(Packet  Data Convergence Protocol，PDCP)层、无线链路控制(Radio Link Control，RLC)层、物理层和射频的能力信息等。
因此，在D2D通信过程中，第一终端通过向网络设备请求第二终端的属性信息，根据第二终端的属性信息，与第二终端进行通信，可以提高数据通信的成功率，例如，如果属性信息包括第二终端的最大接收带宽、能够接收的最大数据块大小或接收天线数量时，可以避免由于发送的数据占据的带宽过宽，数据块过大所造成的第二终端的数据接收失败，例如，如果属性信息包括第二终端的最大发送带宽、能够发送的最大数据块大小、发送天线数量，可以避免第一终端接收数据的失败。
进一步地，第一终端基于第二终端与网络设备进行通信的能力信息，来确定第二终端与第一终端进行通信的能力信息，可以参考蜂窝网络通信的能力信息，来进行D2D通信，可以在尽量不改变协议的基础上，提高D2D通信的成功率。
本申请实施例的网络设备可以是基站、MME或其他网络设备。为了便于理解，以下将分别结合图3和图4，以网络设备为基站和MME为例，描述根据本申请实施例用于D2D的通信方法。
图3是根据本申请实施例的用于D2D的通信方法300的示意性流程图。
在310中，当第一终端确定有数据需要通过PC5接口发送给第二终端时，在Uu接口上，向基站发送上行RRC消息，用于请求第二终端的属性信息。
可选地，该上行RRC消息可以是sidelinkUEinformation消息，或任何其他上行RRC消息。
在320中，基站在接收到第一终端发送的上行无线资源控制(Radio Resource Control，RRC)消息之后，判断本地是否存储第二终端的属性信息，如果存储，执行380，如果未存储，执行330。
在330中，基站确定未存储有第二终端的属性信息，向移动管理实体(Mobility Management Entity，MME)发送请求消息，该请求消息可以为S1消息，用于请求第二终端的属性信息。
在340中，MME在接收到基站发送的该请求消息之后，可以确定本地是否存储有该第二终端的属性信息，如果存储执行370，如果未存储，执行350。
在350中，MME确定未存储有第二终端的属性信息，向归属用户服务 器(Home Subscriber Server，HSS)发送请求消息，用于请求第二终端的属性信息。
在360中，HSS获取第二终端的属性信息，向MME发送响应消息，携带该第二终端的属性信息。
在370中，MME在本地获取第二终端的属性信息或在接收到HSS发送的属性信息后，向基站发送响应消息，该响应消息用于携带第二终端的属性信息。
在380中，基站在本地获取第二终端的属性信息或在接收到MME发送的属性信息之后，向第一终端发送下行RRC消息，该下行RRC消息携带第二终端的属性信息。
可选地，该下行RRC消息为RRC重配置消息。
在390中，第一终端根据第二终端的属性信息，与第二终端进行通信。
图4根据本申请实施例的用于D2D的通信方法400示意性流程图。
在410中，当第一终端确定有数据需要通过PC5接口发送给第二终端时，在Uu接口上，向MME上行非接入层(Non-access stratum，NAS)消息，用于请求第二终端的属性信息。可选地，该上行NAS消息为UE information request。
在420中，MME在接收到第一终端发送的上行NAS消息之后，判断本地是否存储第二终端的属性信息，如果存储，执行460，如果未存储，执行430。
在430中，MME确定未存储有第二终端的属性信息，向HSS发送请求消息，用于请求第二终端的属性信息。
在440中，HSS获取第二终端的属性信息，向MME发送响应消息，携带该第二终端的属性信息。
在450中，MME在本地获取第二终端的属性信息或在接收到HSS发送的属性信息之后，向第一终端发送下行NAS消息，该下行NAS消息携带第二终端的属性信息。可选地，该下行NAS消息为UE information response。
可选地，MME可以通过RRC透明容器的方式将该属性信息通过下行NAS消息发送给UE。
在460中，第一终端根据第二终端的属性信息，与第二终端进行通信。
在本申请实施例的各请求消息中，可以携带第二终端的标识以及需要请 求的内容对象。在各响应消息中，可以携带第二终端的标识以及请求的内容对象的值。
图5是根据本申请实施例的终端500的示意性框图。如图5所示，该终端500包括：发送单元510，用于向网络设备发送第一消息，该第一消息用于请求获取第二终端的属性信息；接收单元520，用于接收网络设备发送的第二消息，该第二消息用于指示该第二终端的属性信息；数据传输单元530，用于基于该第二终端的属性信息，与该第二终端之间进行终端连通D2D通信。
可选地，该第二终端的属性信息为第一能力信息，该第一能力信息为该第二终端与该终端进行通信的能力信息；该数据传输单元530具体用于：基于该第一能力信息，与该第二终端之间进行数据传输。
可选地，该第二终端的属性信息为第二能力信息，该第二能力信息为该第二终端与网络设备进行通信的能力信息；该数据传输单元530具体用于：基于该第二能力信息，确定第一能力信息，该第一能力信息为该第二终端与该数据传输单元进行通信的能力信息基于该第一能力信息，与该第二终端之间进行数据传输。
可选地，该第一能力信息包括该第二终端在与该数据传输单元进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
可选地，该发送单元510具体用于：向基站发送上行无线资源控制RRC消息，该上行RRC消息用于请求获取该第二终端的属性信息；该接收单元520具体用于：接收该基站发送的下行RRC消息，该下行RRC消息用于指示该终端设备的属性信息。
可选地，该发送单元510具体用于：向移动管理实体MME发送上行非接入层NAS消息，该上行NAS消息用于请求获取该第二终端的属性信息；该接收单元520具体用于：接收该MME发送的下行RRC消息，该下行RRC消息用于指示该终端设备的属性信息。
可选地，该第二终端支持的射频带宽小于或等于1.4MHZ。
应理解，终端500可以对应于上述方法实施例中的第一终端，可以实现该第一终端的相应操作，为了简洁，在此不再赘述。
图6是根据本申请实施例的网络设备600的示意性框图。如图6所示， 该网络设备600包括：接收单元610，用于接收第一终端的第一消息，该第一消息用于请求获取第二终端的属性信息；获取单元620，用于根据该第一消息，获取该第二终端的属性信息；发送单元630，用于向该第一终端发送第二消息，该第二消息用于指示该第二终端的属性信息，以便于该第一终端根据该第二终端的该属性信息，与该第二终端进行终端连通D2D通信。
可选地，该第二终端的属性信息为第一能力信息，该第一能力信息为该第二终端与该第一终端进行通信的能力信息。
可选地，该第一能力信息包括该第二终端在与该第一终端进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
可选地，该第二终端的属性信息为第二能力信息，该第二能力信息为该第二终端与网络设备600进行通信的能力信息。
可选地，该网络设备600为基站；该接收单元610具体用于：接收该第一终端发送的上行无线资源控制RRC消息，该上行RRC消息用于请求获取第二终端的该属性信息；该获取单元620具体用于：获取本地存储的该第二终端的属性信息，或向MME请求该第二终端的属性信息；该发送单元630具体用于：向该第一终端发送下行RRC消息，该下行RRC消息用于指示该第二终端的该属性信息。
可选地，该网络设备600为移动管理实体MME；该接收单元610具体用于：接收该第一终端发送的上行NAS消息，该上行NAS消息用于请求获取该第二终端的该属性信息；该获取单元620具体用于：获取本地存储的该第二终端的属性信息，或向NAS请求该第二终端的属性信息；该发送单元630具体用于：向该第一终端发送下行非接入层NAS消息，该NSA响应消息用于指示该第二终端的该属性信息。
可选地，该第二终端支持的射频带宽小于或等于1.4MHZ。
应理解，网络设备600可以对应于上述方法实施例中的网络设备，可以实现该网络设备的相应操作，为了简洁，在此不再赘述。
图7是根据本申请实施例的终端700的示意性框图。该终端700包括处理器710和存储器720。存储器720，用于存放程序指令。处理器710可以调用存储器720中存放的程序指令，可以方法实施例中第一终端的相应操作。该终端700还包括用于对外通信的收发器730，和用于将处理器710、存储 器720和收发器730互连的总线系统740。
处理器710用于调用存储器720中存储的指令，执行以下操作：利用收发器730向网络设备发送第一消息，该第一消息用于请求获取第二终端的属性信息；利用收发器730接收网络设备发送的第二消息，该第二消息用于指示该第二终端的属性信息；基于该第二终端的属性信息，利用收发器730与该第二终端之间进行数据传输。
可选地，该第二终端的属性信息为第一能力信息，该第一能力信息为该第二终端与该终端700进行通信的能力信息；处理器710用于调用存储器720中存储的指令，执行以下操作：基于该第一能力信息，利用收发器730与该第二终端之间进行数据传输。
可选地，该第二终端的属性信息为第二能力信息，该第二能力信息为该第二终端与网络设备进行通信的能力信息；处理器710用于调用存储器720中存储的指令，执行以下操作：基于该第二能力信息，确定第一能力信息，该第一能力信息为该第二终端与该终端700进行通信的能力信息；基于该第一能力信息，利用收发器730与该第二终端之间进行数据传输。
可选地，该第一能力信息包括该第二终端在与该终端700进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
可选地，处理器710用于调用存储器720中存储的指令，执行以下操作：利用收发器730向基站发送上行无线资源控制RRC消息，该上行RRC消息用于请求获取该第二终端的属性信息；利用收发器730接收该基站发送的下行RRC消息，该下行RRC消息用于指示该终端设备的属性信息。
可选地，处理器710用于调用存储器720中存储的指令，执行以下操作：利用收发器730向MME发送上行非接入层NAS消息，该上行NAS消息用于请求获取该第二终端的属性信息；利用收发器730接收该移动管理实体MME发送的下行RRC消息，该下行RRC消息用于指示该终端设备的属性信息。
可选地，该第二终端支持的射频带宽小于或等于1.4MHZ。
应理解，终端700可以对应于上述方法实施例中的第一终端，可以实现该第一终端的相应操作，为了简洁，在此不再赘述。
图8是根据本申请实施例的网络设备800的示意性框图。该终端800包 括处理器810和存储器820。存储器820，用于存放程序指令。处理器810可以调用存储器820中存放的程序指令，可以方法实施例中网络设备的相应操作。该网络设备800还包括用于对外通信的收发器830，和用于将处理器810、存储器820和收发器830互连的总线系统840。
可选地，处理器810用于调用存储器820中存储的指令，执行以下操作：利用收发器830接收第一终端的第一消息，该第一消息用于请求获取第二终端的属性信息；获取该第二终端的属性信息；利用收发器830向该第一终端发送第二消息，该第二消息用于指示该第二终端的属性信息，以便于该第一终端根据该第二终端的该属性信息，向该第二终端发送数据。
可选地，该第二终端的属性信息为第一能力信息，该第一能力信息为该第二终端与该第一终端进行通信的能力信息。
可选地，该第一能力信息包括该第二终端在与该第一终端进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
可选地，该第二终端的属性信息为第二能力信息，该第二能力信息为该第二终端与网络设备800进行通信的能力信息。
可选地，该网络设备800为基站；处理器810用于调用存储器820中存储的指令，执行以下操作：利用收发器830接收第一终端发送的第一消息，包括：该基站接收该第一终端发送的上行无线资源控制RRC消息，该上行RRC消息用于请求获取第二终端的该属性信息；获取本地存储的该第二终端的属性信息，或向MME请求该第二终端的属性信息；利用收发器830向该第一终端发送下行RRC消息，该下行RRC消息用于指示该第二终端的该属性信息。
可选地，该网络设备800为移动管理实体MME；处理器810用于调用存储器820中存储的指令，执行以下操作：利用收发器830接收该第一终端发送的上行非接入层NAS消息，该上行NAS消息用于请求获取该第二终端的该属性信息；利用收发器830向该第一终端发送下行NAS消息，该NSA响应消息用于指示该第二终端的该属性信息。
可选地，该第二终端支持的射频带宽小于或等于1.4MHZ。
应理解，网络设备800可以对应于上述方法实施例中的网络设备，可以实现该网络设备的相应操作，为了简洁，在此不再赘述。
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(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、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所述以权利要求的保护范围为准。

Claims (28)

  1. 一种终端连通D2D通信方法，其特征在于，包括
    第一终端向网络设备发送第一消息，所述第一消息用于请求获取第二终端的属性信息；
    所述第一终端接收网络设备发送的第二消息，所述第二消息用于指示所述第二终端的属性信息；
    基于所述第二终端的属性信息，所述第一终端与所述第二终端之间进行数据传输。
  2. 根据权利要求1所述的方法，其特征在于，所述第二终端的属性信息为第一能力信息，所述第一能力信息为所述第二终端与所述第一终端进行通信的能力信息；
    所述第一终端与所述第二终端之间进行数据传输，包括：
    基于所述第一能力信息，所述第一终端与所述第二终端之间进行数据传输。
  3. 根据权利要求1所述的方法，其特征在于，所述第二终端的属性信息为第二能力信息，所述第二能力信息为所述第二终端与网络设备进行通信的能力信息；
    所述第一终端与所述第二终端之间进行数据传输，包括：
    所述第一终端基于所述第二能力信息，确定第一能力信息，所述第一能力信息为所述第二终端与所述第一终端进行通信的能力信息
    基于所述第一能力信息，所述第一终端与所述第二终端之间进行数据传输。
  4. 根据权利要求2或3所述的方法，其特征在于，
    所述第一能力信息包括所述第二终端在与所述第一终端进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，
    所述第一终端向网络设备发送第一消息，包括：所述第一终端向基站发送上行无线资源控制RRC消息，所述上行RRC消息用于请求获取所述第二终端的属性信息；
    所述第一终端接收网络设备发送的第二消息，包括：所述第一终端接收 所述基站发送的下行RRC消息，所述下行RRC消息用于指示所述终端设备的属性信息。
  6. 根据权利要求1至4所述的方法，其特征在于，
    所述第一终端向网络设备发送第一消息，包括：所述第一终端向MME发送上行非接入层NAS消息，所述上行NAS消息用于请求获取所述第二终端的属性信息；
    所述第一终端接收网络设备发送的第二消息，包括：所述第一终端接收所述移动管理实体MME发送的下行RRC消息，所述下行RRC消息用于指示所述终端设备的属性信息。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述第二终端支持的射频带宽小于或等于1.4MHZ。
  8. 一种终端连通D2D通信方法，其特征在于，包括：
    网络设备接收第一终端的第一消息，所述第一消息用于请求获取第二终端的属性信息；
    根据所述第一消息，所述网络设备获取所述第二终端的属性信息；
    所述网络设备向所述第一终端发送第二消息，所述第二消息用于指示所述第二终端的属性信息，以便于所述第一终端根据所述第二终端的所述属性信息，向所述第二终端发送数据。
  9. 根据权利要求8所述的方法，其特征在于，所述第二终端的属性信息为第一能力信息，所述第一能力信息为所述第二终端与所述第一终端进行通信的能力信息。
  10. 根据权利要求9所述的方法，其特征在于，所述第一能力信息包括所述第二终端在与所述第一终端进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
  11. 根据权利要求8所述的方法，其特征在于，所述第二终端的属性信息为第二能力信息，所述第二能力信息为所述第二终端与网络设备进行通信的能力信息。
  12. 根据权利要求8至11中任一项所述的方法，其特征在于，所述网络设备为基站；
    所述网络设备接收第一终端发送的第一消息，包括：所述基站接收所述 第一终端发送的上行无线资源控制RRC消息，所述上行RRC消息用于请求获取第二终端的所述属性信息；
    所述网络设备获取所述第二终端的属性信息，包括：获取本地存储的所述第二终端的属性信息，或向MME请求所述第二终端的属性信息；
    所述网络设备向所述第二终端发送第二消息，包括：所述基站向所述第一终端发送下行RRC消息，所述下行RRC消息用于指示所述第二终端的所述属性信息。
  13. 根据权利要求8至11中任一项所述的方法，其特征在于，所述网络设备为移动管理实体MME；
    所述网络设备接收第一终端发送的第一消息，包括：所述MME接收所述第一终端发送的上行非接入层NAS消息，所述上行NAS消息用于请求获取所述第二终端的所述属性信息；
    所述网络设备获取所述第二终端的属性信息，包括：获取本地存储的所述第二终端的属性信息，或向NAS请求所述第二终端的属性信息；
    所述网络设备向所述第二终端发送第二消息，包括：所述MME向所述第一终端发送下行NAS消息，所述NSA响应消息用于指示所述第二终端的所述属性信息。
  14. 根据权利要求8至13中任一项所述的方法，其特征在于，所述第二终端支持的射频带宽小于或等于1.4MHZ。
  15. 一种终端，其特征在于，包括：
    发送单元，用于向网络设备发送第一消息，所述第一消息用于请求获取第二终端的属性信息；
    接收单元，用于接收网络设备发送的第二消息，所述第二消息用于指示所述第二终端的属性信息；
    数据传输单元，用于基于所述第二终端的属性信息，与所述第二终端之间进行终端连通D2D通信。
  16. 根据权利要求15所述的终端，其特征在于，所述第二终端的属性信息为第一能力信息，所述第一能力信息为所述第二终端与所述终端进行通信的能力信息；
    所述数据传输单元具体用于：
    基于所述第一能力信息，与所述第二终端之间进行数据传输。
  17. 根据权利要求15所述的终端，其特征在于，所述第二终端的属性信息为第二能力信息，所述第二能力信息为所述第二终端与网络设备进行通信的能力信息；
    所述数据传输单元具体用于：
    基于所述第二能力信息，确定第一能力信息，所述第一能力信息为所述第二终端与所述数据传输单元进行通信的能力信息
    基于所述第一能力信息，与所述第二终端之间进行数据传输。
  18. 根据权利要求16或17所述的终端，其特征在于，
    所述第一能力信息包括所述第二终端在与所述数据传输单元进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
  19. 根据权利要求15至18中任一项所述的终端，其特征在于，
    所述发送单元具体用于：向基站发送上行无线资源控制RRC消息，所述上行RRC消息用于请求获取所述第二终端的属性信息；
    所述接收单元具体用于：接收所述基站发送的下行RRC消息，所述下行RRC消息用于指示所述终端设备的属性信息。
  20. 根据权利要求15至19中任一项所述的终端，其特征在于，
    所述发送单元具体用于：向移动管理实体MME发送上行非接入层NAS消息，所述上行NAS消息用于请求获取所述第二终端的属性信息；
    所述接收单元具体用于：接收所述MME发送的下行RRC消息，所述下行RRC消息用于指示所述终端设备的属性信息。
  21. 根据权利要求15至20中任一项所述的终端，其特征在于，所述第二终端支持的射频带宽小于或等于1.4MHZ。
  22. 一种网络设备，其特征在于，包括：
    接收单元，用于接收第一终端的第一消息，所述第一消息用于请求获取第二终端的属性信息；
    获取单元，用于根据所述第一消息，获取所述第二终端的属性信息；
    发送单元，用于向所述第一终端发送第二消息，所述第二消息用于指示所述第二终端的属性信息，以便于所述第一终端根据所述第二终端的所述属性信息，与所述第二终端进行终端连通D2D通信。
  23. 根据权利要求22所述的网络设备，其特征在于，所述第二终端的 属性信息为第一能力信息，所述第一能力信息为所述第二终端与所述第一终端进行通信的能力信息。
  24. 根据权利要求23所述的网络设备，其特征在于，所述第一能力信息包括所述第二终端在与所述第一终端进行数据传输时的最大接收带宽、最大发送带宽、能够发送的最大数据块大小、能够接收的最大数据块大小、发射天线数量和接收天线数量中的至少一种。
  25. 根据权利要求22所述的网络设备，其特征在于，所述第二终端的属性信息为第二能力信息，所述第二能力信息为所述第二终端与网络设备进行通信的能力信息。
  26. 根据权利要求22至25中任一项所述的网络设备，其特征在于，所述网络设备为基站；
    所述接收单元具体用于：接收所述第一终端发送的上行无线资源控制RRC消息，所述上行RRC消息用于请求获取第二终端的所述属性信息；
    所述获取单元具体用于：获取本地存储的所述第二终端的属性信息，或向MME请求所述第二终端的属性信息；
    所述发送单元具体用于：向所述第一终端发送下行RRC消息，所述下行RRC消息用于指示所述第二终端的所述属性信息。
  27. 根据权利要求22至25中任一项所述的网络设备，其特征在于，所述网络设备为移动管理实体MME；
    所述接收单元具体用于：接收所述第一终端发送的上行NAS消息，所述上行NAS消息用于请求获取所述第二终端的所述属性信息；
    所述获取单元具体用于：获取本地存储的所述第二终端的属性信息，或向NAS请求所述第二终端的属性信息；
    所述发送单元具体用于：向所述第一终端发送下行非接入层NAS消息，所述NSA响应消息用于指示所述第二终端的所述属性信息。
  28. 根据权利要求22至27中任一项所述的网络设备，其特征在于，所述第二终端支持的射频带宽小于或等于1.4MHZ。
PCT/CN2016/077512 2016-03-28 2016-03-28 终端直通通信方法、终端设备和网络设备 WO2017166022A1 (zh)

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US16/066,053 US10887933B2 (en) 2016-03-28 2016-03-28 Device-to-device communication method, terminal device, and network device
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CN201680073803.7A CN108702800A (zh) 2016-03-28 2016-03-28 终端直通通信方法、终端设备和网络设备
TW106110232A TWI730073B (zh) 2016-03-28 2017-03-28 終端直通通信方法、終端設備和網絡設備
HK19100758.1A HK1258453A1 (zh) 2016-03-28 2019-01-16 終端直通通信方法、終端設備和網絡設備
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US20210076436A1 (en) 2021-03-11

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