WO2014186951A1 - 设备间通信的方法、装置和系统 - Google Patents

设备间通信的方法、装置和系统 Download PDF

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Publication number
WO2014186951A1
WO2014186951A1 PCT/CN2013/075990 CN2013075990W WO2014186951A1 WO 2014186951 A1 WO2014186951 A1 WO 2014186951A1 CN 2013075990 W CN2013075990 W CN 2013075990W WO 2014186951 A1 WO2014186951 A1 WO 2014186951A1
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WO
WIPO (PCT)
Prior art keywords
base station
serving base
negotiation
calling terminal
terminal
Prior art date
Application number
PCT/CN2013/075990
Other languages
English (en)
French (fr)
Inventor
崔杰
肖登坤
吴泳彤
韩静
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201380001453.XA priority Critical patent/CN104488340B/zh
Priority to PCT/CN2013/075990 priority patent/WO2014186951A1/zh
Publication of WO2014186951A1 publication Critical patent/WO2014186951A1/zh

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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
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, apparatus, and system for communication between devices. Background technique
  • the D2D communication method is a technology for directly performing data exchange or service provision without being transferred by an eNB (evolved Node B).
  • the D2D service transmission can be performed without the base station forwarding, but directly through the interaction between the terminal and the terminal; and the base station only plays a basic control role.
  • the D2D service transmission resources may use the original cellular radio resources (for example, frequency domain resources)
  • the base station needs to perform corresponding scheduling and resource allocation to help D2D communication between terminals; in addition, synchronization between terminals can also be performed through the base station.
  • the synchronization of the transmission and reception of the terminal 1 and the terminal 2 in FIG. 1 can be completed by the assistance of the base station, for example, the time points at which the two terminals can obtain the transmission and reception time from the serving base station, thereby knowing the transmission time point of the data of the counterpart terminal, thereby Ensure data synchronization.
  • the mutual discovery between the terminals can be determined by parsing the D2D pilot sequence sent by the terminal. For example, when the terminal parses the received signal strength of a D2D pilot sequence stronger than a predetermined threshold, the pilot sequence can be reported.
  • the network side adds the terminal to the candidate set of the current terminal that can perform D2D communication; when the terminal 1 needs to communicate with the terminal 2, the network side determines whether D2D communication can be performed, that is, whether the terminal 2 is in the judgment
  • the candidate set of D2D communication of the terminal 1 performs D2D communication if it is, and performs normal base station forwarded communication if it is not.
  • D2D communication is performed on two terminals under the same base station, as follows:
  • the two terminals are in a D2D collaboration set.
  • the method for selecting the terminal in the D2D cooperative set may be to detect whether the received signal strength of the D2D pilot sequence is higher than a predetermined threshold to select whether to be a terminal of the D2D cooperative set, or may be other manners, and is not limited herein.
  • Step 1 The calling terminal sends a call request to the network side;
  • the device on the network side may be the serving base station or MME (Mobile Management Entity) of the above-mentioned calling terminal.
  • MME Mobile Management Entity
  • Step 2 The network side determines whether the called terminal corresponding to the call request and the calling terminal are in a D2D collaboration set.
  • Step 3 If the called terminal is an idle state (IDLE state) terminal, the MME first pages the called terminal; then the serving base station initiates a D2D call request to the called terminal; if the called terminal is connected (connected) State terminal, then the D2D call request can be initiated by the serving base station to the called terminal.
  • IDLE state idle state
  • the MME first pages the called terminal; then the serving base station initiates a D2D call request to the called terminal; if the called terminal is connected (connected) State terminal, then the D2D call request can be initiated by the serving base station to the called terminal.
  • Step 4 The serving base station allocates radio resources to the D2D communication parties and informs the sending and receiving timing information.
  • Step 5 The calling terminal and the called terminal respectively perform D2D communication according to the foregoing sending and receiving timing information.
  • the current D2D communication flow only gives a scheme for performing D2D communication between the calling terminal and the called terminal under the same serving base station; if two terminals under the different serving base station need to adopt D2D communication, then one serving base station cannot Determining resource allocation and sending and receiving timing information, the above set of procedures cannot support D2D communication between terminals under different eNBs. Summary of the invention
  • Embodiments of the present invention provide a method, device, and system for communication between devices, which are used to implement D2D communication of a terminal device under a different base station.
  • a method of communication between devices including:
  • the serving base station of the calling terminal After receiving the call request of the calling terminal, the serving base station of the calling terminal forwards the call request to the mobility management entity;
  • the negotiation result of the resource allocation negotiation and the timing synchronization negotiation is sent to the calling terminal, and the negotiation result is used for the inter-device communication between the calling terminal and the called terminal.
  • the The resource allocation negotiation performed by the serving base station includes:
  • the sending, by using the inter-base station interface, the resource allocation request to the serving base station of the called terminal to perform resource allocation negotiation includes:
  • the resource allocation request is sent to the server base station of the called terminal through the inter-base station interface; the available resource information of the serving base station of the called terminal returned by the serving base station of the called terminal is received, and the resource allocation negotiation result of the inter-device communication is determined accordingly.
  • the timing synchronization negotiation with the serving base station of the called terminal includes: The interface sends the timing information of the calling terminal and the timing information obtaining request of the called terminal to the serving base station of the called terminal, and receives timing information of the called terminal returned by the serving base station of the called terminal; or And transmitting, to the RRC coordinator, the timing information of the calling terminal and the timing information obtaining request of the called terminal, and receiving timing information of the called terminal returned by the RRC coordinator.
  • a method for communication between devices including:
  • the serving base station of the called terminal performs resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal; the serving base station of the called terminal is determined by the calling service base station according to the received from the mobility management entity. The serving base station information of the called terminal is determined;
  • the negotiation result of the resource allocation negotiation and the timing synchronization negotiation is sent to the called terminal, and the calling terminal and the called terminal perform device-to-device communication.
  • the service base station of the called terminal and the serving base station of the calling terminal perform resource allocation negotiation, including:
  • the performing the resource allocation negotiation after receiving the resource allocation request sent by the serving base station of the calling terminal by using the inter-base station interface includes:
  • the serving base station of the called terminal performs timing synchronization negotiation with the serving base station of the calling terminal, including :
  • a method for communication between devices including:
  • the serving base station of the called terminal receives the serving base station information of the calling terminal sent by the mobility management entity;
  • the negotiation result of the resource allocation negotiation and the timing synchronization negotiation is sent to the called terminal, and the calling terminal and the called terminal perform device-to-device communication.
  • the resource allocation negotiation with the serving base station of the calling terminal includes:
  • Sending a resource allocation request to the serving base station of the calling terminal through the inter-base station interface to perform resource allocation negotiation includes:
  • the resource allocation request is sent to the server base station of the calling terminal through the inter-base station interface; the available resource information of the serving base station of the calling terminal returned by the serving base station of the calling terminal is received, and the resource allocation negotiation result of the communication between the devices is determined accordingly.
  • the timing synchronization negotiation with the serving base station of the calling terminal includes: The interface sends timing information of the calling terminal and a timing information obtaining request of the calling terminal to the serving base station of the calling terminal, and receives timing information of the calling terminal returned by the serving base station of the calling terminal; or And transmitting, to the RRC coordinator, timing information of the called terminal and a timing information obtaining request of the calling terminal, and receiving timing information of the calling terminal returned by the RRC coordinator.
  • a method for communication between devices including:
  • the serving base station of the calling terminal After receiving the call request of the calling terminal, the serving base station of the calling terminal forwards the call request to the mobility management entity; and causes the mobility management entity to send the serving base station information of the calling terminal to the call request corresponding The serving base station of the called terminal, and the serving base station of the called terminal determines the serving base station of the calling terminal according to the serving base station information of the calling terminal;
  • the resource allocation negotiation with the serving base station of the calling terminal includes:
  • the performing the resource allocation negotiation after receiving the resource allocation request sent by the serving base station of the called terminal by using the inter-base station interface includes: Receiving, by the inter-base station interface, a resource allocation request from the serving base station of the called terminal; transmitting, to the serving base station of the called terminal, available resource information of the serving base station of the calling terminal, and receiving the called terminal to return The resource allocation negotiation result of the communication between devices.
  • the timing synchronization negotiation with the serving base station of the calling terminal includes: Receiving, by the interface, timing information of the called terminal from the serving base station of the called terminal, and a timing information obtaining request of the calling terminal; determining, according to the timing information of the called terminal, the serving base station to the called terminal Returning the timing information of the calling terminal; or transmitting timing information of the calling terminal to the RRC coordinator, and receiving timing information of the called terminal returned by the RRC coordinator.
  • a method for communication between devices including:
  • the called terminal corresponding to the call request and the calling terminal belong to the same inter-device communication D2D cooperative set, send the serving base station information of the called terminal to the serving base station of the calling terminal, so that the calling party
  • the serving base station of the terminal performs resource allocation negotiation and timing synchronization negotiation with the serving base station of the called terminal, or sends the serving base station information of the calling terminal to the serving base station of the called terminal to enable the service of the called terminal.
  • the base station performs resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal, and the negotiation result of the resource allocation negotiation and the timing synchronization negotiation is used for the inter-device communication between the calling terminal and the called terminal.
  • the serving base station information of the called terminal is sent to the serving base station of the calling terminal, or is sent to the serving base station of the called terminal.
  • the serving base station information of the calling terminal further includes:
  • a base station including:
  • a first call request receiving unit configured to receive a call request of the calling terminal
  • a first call request sending unit configured to forward the call request received by the first call request receiving unit to the mobility management entity
  • a first base station information receiving unit configured to receive the first call request returned by the mobility management entity Obtaining the serving base station information of the called terminal corresponding to the call request sent by the sending unit;
  • a first base station determining unit configured to determine a serving base station of the called terminal according to the serving base station information of the called terminal received by the first base station information receiving unit;
  • a first negotiation control unit configured to control resource allocation negotiation and timing synchronization negotiation with a serving base station of the called terminal determined by the first base station determining unit;
  • a first result sending unit configured to send, by the first negotiation control unit, a negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the calling terminal, where the negotiation result is used by the calling terminal and the called terminal to perform the device Communication between.
  • the first negotiation control unit includes:
  • a first sending unit configured to send a resource allocation request to the serving base station of the called terminal to perform resource allocation negotiation by using an inter-base station interface; or, the first negotiation control unit includes:
  • a second sending unit configured to send, to the RRC resource coordinator, a resource allocation request and resource status information of the serving base station of the calling terminal;
  • a first result receiving unit configured to receive a resource allocation result of performing resource allocation negotiation returned by the RRC coordinator.
  • the first sending unit is specifically configured to send a resource allocation request to a server base station of the called terminal by using an inter-base station interface;
  • the serving base station of the called terminal returns the available resource information of the serving base station of the called terminal, and the first negotiation control unit determines the resource allocation negotiation result of the inter-device communication accordingly.
  • the first negotiation control unit includes:
  • a third sending unit configured to send timing information of the calling terminal and a timing information obtaining request of the called terminal to the serving base station of the called terminal by using an inter-base station interface
  • a first timing information receiving unit configured to receive timing information of the called terminal returned by the serving base station of the called terminal; or, the first negotiation control unit includes:
  • a fourth sending unit configured to send timing information of the calling terminal and a timing information obtaining request of the called terminal to the RRC coordinator;
  • a second timing signal receiving unit configured to receive the called party returned by the RRC coordinator Timing information of the terminal.
  • a base station including:
  • a third negotiation control unit configured to perform resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal; the serving base station of the called terminal is received by the calling service base station according to the received mobility management entity The serving base station information of the called terminal is determined;
  • a third result sending unit configured to send the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the called terminal, where the calling terminal and the called terminal perform device-to-device communication.
  • the third negotiation control unit includes:
  • the third negotiation control unit includes:
  • a ninth sending unit configured to send, to the RRC resource coordinator, resource status information of the serving base station of the called terminal;
  • a third result receiving unit configured to receive a resource allocation result of performing resource allocation negotiation returned by the RRC coordinator.
  • the first receiving unit is configured to receive, by using an inter-base station interface, a resource allocation request from a serving base station of the calling terminal.
  • the third negotiation control unit further includes:
  • a ninth sending unit configured to send, to the serving base station of the calling terminal, available resource information of the serving base station of the called terminal;
  • a fourth result receiving unit configured to receive a resource allocation negotiation result of the inter-device communication returned by the calling terminal.
  • the third negotiation control unit includes:
  • a second receiving unit configured to receive, by using an inter-base station interface, timing information of the calling terminal from the serving base station of the calling terminal, and a timing information obtaining request of the called terminal; and determining, according to the timing of the calling terminal Information determining timing information of the called terminal;
  • the third negotiation control unit includes: a tenth sending unit, configured to send timing information of the called terminal to a radio resource management coordinator;
  • a fifth result receiving unit configured to receive timing information of the calling terminal returned by the RRC coordinator.
  • a base station including:
  • a second base station information receiving unit configured to receive service base station information of the calling terminal sent by the mobility management entity
  • a second base station determining unit configured to determine a serving base station of the calling terminal according to the serving base station information of the calling terminal received by the first base station information receiving unit;
  • a second negotiation control unit configured to control resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal determined by the second base station determining unit;
  • a second result sending unit configured to send the negotiation result of the resource negotiation negotiation and the time synchronization negotiation by the second negotiation control unit to the called terminal, where the calling terminal and the called terminal perform device-to-device communication.
  • the second negotiation control unit includes:
  • a fifth sending unit configured to send a resource allocation request to the serving base station of the calling terminal to perform resource allocation negotiation by using an inter-base station interface; or, the second negotiation control unit includes:
  • a sixth sending unit configured to send, to the RRC resource coordinator, a resource allocation request and resource status information of the serving base station of the called terminal;
  • a second result receiving unit configured to receive a resource allocation result of performing resource allocation negotiation returned by the RRC coordinator.
  • the fifth sending unit is specifically configured to send, by using an inter-base station interface, a resource allocation request to a server base station of the calling terminal;
  • the serving base station of the calling terminal returns the available resource information of the serving base station of the calling terminal, and causes the second negotiation control unit to determine the resource allocation negotiation result of the inter-device communication accordingly.
  • the second negotiation control unit includes: a seventh sending unit, configured to send timing information of the calling terminal and a timing information obtaining request of the calling terminal to the serving base station of the calling terminal by using an inter-base station interface;
  • a third timing information receiving unit configured to receive timing information of the calling terminal returned by the serving base station of the calling terminal; or, the second negotiation control unit includes:
  • An eighth sending unit configured to send timing information of the called terminal and a timing information obtaining request of the calling terminal to the RRC coordinator;
  • a fourth timing information receiving unit configured to receive timing information of the calling terminal returned by the RRC coordinator.
  • a base station including:
  • a third call request receiving unit configured to receive a call request of the calling terminal
  • a second call request sending unit configured to forward the call request received by the third call request receiving unit to the mobility management entity; and cause the mobility management entity to send the serving base station information of the calling terminal to the call Requesting a corresponding serving base station of the called terminal, and causing the serving base station of the called terminal to determine a serving base station of the calling terminal according to the serving base station information of the calling terminal;
  • a fourth negotiation control unit configured to perform resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal
  • a fifth result sending unit configured to send the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the calling terminal, where the calling terminal and the called terminal perform device-to-device communication.
  • the fourth negotiation control unit includes:
  • a third receiving unit configured to perform resource allocation negotiation after receiving a resource allocation request sent by the serving base station of the called terminal by using an inter-base station interface
  • the fourth negotiation control unit includes: an eleventh sending unit, configured to: Transmitting, to the radio resource management coordinator, resource status information of the serving base station of the calling terminal;
  • a sixth result receiving unit configured to receive a resource allocation result of performing resource allocation negotiation returned by the RRC coordinator.
  • the third receiving unit is specifically configured to receive, by using an inter-base station interface, a resource allocation request from a serving base station of the called terminal.
  • the fourth negotiation control unit further includes: a twelfth sending unit, configured to send, to the serving base station of the called terminal, available resource information of the serving base station of the calling terminal;
  • a seventh result receiving unit configured to receive a resource allocation negotiation result of the inter-device communication returned by the called terminal.
  • the fourth negotiation control unit includes:
  • a fourth receiving unit configured to receive, by the inter-base station interface, timing information of the called terminal from the serving base station of the called terminal, and a timing information obtaining request of the calling terminal; timing information for the called terminal Determining timing information of the calling terminal;
  • a sixth result sending unit configured to return timing information of the calling terminal to the serving base station of the called terminal; or, the fourth negotiation control unit includes:
  • a thirteenth sending unit configured to send timing information of the calling terminal to a radio resource management coordinator
  • an eighth result receiving unit configured to receive timing information of the called terminal returned by the RRC coordinator.
  • a mobility management entity including:
  • a second call request receiving unit configured to receive a call request of the calling terminal forwarded by the serving base station of the calling terminal
  • a set determining unit configured to determine whether the called terminal corresponding to the call request received by the second call request receiving unit and the calling terminal belong to the same D2D collaboration set
  • a base station information sending unit configured to: if the set determining unit determines that the called terminal corresponding to the call request and the calling terminal belong to the same D2D cooperative set, send the called terminal to a serving base station of the calling terminal.
  • the serving base station information is such that the serving base station of the calling terminal performs resource allocation negotiation and timing synchronization negotiation with the serving base station of the called terminal, or transmits the serving base station of the calling terminal to the serving base station of the called terminal.
  • the information is such that the serving base station of the called terminal performs resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal, and the negotiation result of the resource allocation negotiation and the timing synchronization negotiation is used by the calling terminal and the called terminal to perform equipment. Communication between.
  • the method further includes: a state determining unit, configured to send, by the base station information sending unit, the serving base station to the calling terminal Sending the serving base station information of the called terminal, or determining whether the called terminal is in a connected state before transmitting the serving base station information of the calling terminal to the serving base station of the called terminal;
  • the paging control unit is configured to: if the status determining unit determines that the result is no, page the called terminal to enable the called terminal to enter a connected state.
  • a base station including: a receiving device, a transmitting device, a memory, and a processor;
  • the processor after the receiving device receives the call request of the calling terminal, instructing the transmitting device to forward the call request to the mobility management entity; and receiving, by the receiving device, the mobility management entity returns the After the serving base station information of the called terminal corresponding to the call request, determining the serving base station of the called terminal according to the serving base station information of the called terminal, and performing resource allocation negotiation and timing synchronization negotiation with the serving base station of the called terminal; And instructing the transmitting device to send the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the calling terminal, where the negotiation result is used for the inter-device communication between the calling terminal and the called terminal.
  • the processor is specifically configured to instruct the transmitting device to send a resource allocation request to the serving base station of the called terminal to perform resource allocation negotiation through an inter-base station interface, or instruct the transmitting device to send a resource allocation request to the RRC coordinator and the main
  • the resource status information of the serving base station of the terminal is called, and the resource allocation result of the execution resource allocation negotiation returned by the RRC resource coordinator is received by the receiving apparatus.
  • the processor is specifically configured to instruct the transmitting device to send a resource allocation request to the server base station of the called terminal by using an inter-base station interface Then, the receiving device receives the available resource information of the serving base station of the called terminal returned by the serving base station of the called terminal, and determines the resource allocation negotiation result of the inter-device communication accordingly.
  • the processor is specifically configured to indicate that the transmitting device sends the The serving base station of the called terminal sends the timing information of the calling terminal and the timing information obtaining request of the called terminal, and receives, by the receiving device, timing information of the called terminal returned by the serving base station of the called terminal; or Used to instruct the transmitting device to send the calling terminal to the RRC coordinator
  • the timing information of the terminal and the timing information of the called terminal obtain the request, and receive, by the receiving device, timing information of the called terminal returned by the RRC coordinator.
  • a base station including: a receiving device, a transmitting device, a memory, and a processor;
  • the processor is configured to perform resource allocation negotiation and timing synchronization negotiation with a serving base station of the calling terminal; the serving base station of the called terminal is used by the calling service base station according to the received information from the mobility management entity. Determining the serving base station information of the called terminal; transmitting the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the called terminal by the transmitting device, where the calling terminal and the called terminal perform device-to-device communication.
  • the processor is specifically configured to instruct the transmitting device to perform resource allocation negotiation after receiving the resource allocation request sent by the serving base station of the calling terminal by using an inter-base station interface; or, instructing the transmitting device to send the called terminal to the RRC coordinator Resource status information of the serving base station, and receiving, by the receiving device, a resource allocation result of performing resource allocation negotiation returned by the RRC coordinator.
  • the processor is specifically configured to instruct the transmitting device to receive resources from the serving base station of the calling terminal by using an inter-base station interface And allocating a request; transmitting, to the serving base station of the calling terminal, available resource information of the serving base station of the called terminal, and receiving, by the receiving device, a resource allocation negotiation result of the inter-device communication returned by the calling terminal.
  • the processor is specifically configured to receive, by the receiving device, an inter-base station interface a timing information of the calling terminal of the serving base station of the calling terminal and a timing information obtaining request of the called terminal; determining timing information of the called terminal according to the timing information of the calling terminal; indicating the transmitting device The serving base station of the calling terminal returns timing information of the called terminal; or, instructing the transmitting device to send timing information of the called terminal to the radio resource management coordinator, and receiving the radio resource management coordinator by using the receiving device The timing information of the returned calling terminal.
  • a base station including: a receiving device, a transmitting device, a memory, and a processor;
  • the processor configured to receive, by the receiving device, the calling terminal sent by the mobility management entity After serving the base station information, determining a serving base station of the calling terminal according to the serving base station information of the calling terminal, and performing resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal; The result of the negotiation of the timing synchronization negotiation is sent to the called terminal, and is used for the inter-device communication between the calling terminal and the called terminal.
  • the processor is specifically configured to instruct the transmitting device to send a resource allocation request to the serving base station of the calling terminal to perform resource allocation negotiation through an inter-base station interface, or to instruct the transmitting device to send a resource allocation request to the radio resource management coordinator. And resource status information of the serving base station of the called terminal, and receiving, by the receiving device, a resource allocation result of performing resource allocation negotiation returned by the RRC resource coordinator.
  • the processor is specifically configured to instruct the transmitting device to send a resource allocation request to the server base station of the calling terminal by using an inter-base station interface Receiving, by the receiving device, the available resource information of the serving base station of the calling terminal returned by the serving base station of the calling terminal, and determining the resource allocation negotiation result of the inter-device communication accordingly.
  • the processor is specifically configured to indicate that the transmitting device sends the The serving base station of the calling terminal sends the timing information of the calling terminal and the timing information obtaining request of the calling terminal, and receives, by the receiving device, timing information of the calling terminal returned by the serving base station of the calling terminal; or And a method for instructing the transmitting device to send the timing information of the called terminal to the radio resource management coordinator and the timing information obtaining request of the calling terminal, and receiving, by the receiving device, the calling terminal returned by the RRC coordinator Timing information.
  • a base station including: a receiving device, a transmitting device, a memory, and a processor;
  • the processor after receiving the call request of the calling terminal by the receiving device, instructing the transmitting device to forward the call request to the mobility management entity; and causing the mobility management entity to serve the serving base station of the calling terminal
  • the information is sent to the serving base station of the called terminal corresponding to the call request, and the serving base station of the called terminal determines the serving base station of the calling terminal according to the serving base station information of the calling terminal; and the calling terminal Service base station performs resource allocation negotiation and timing synchronization negotiation;
  • the transmitting device sends the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the calling terminal, where the calling terminal and the called terminal perform device-to-device communication.
  • the processor is specifically configured to perform resource allocation negotiation after receiving, by the receiving device, the resource allocation request sent by the serving base station of the called terminal by using an inter-base station interface; or, instructing the transmitting device to send the calling terminal to the RRC coordinator Resource status information of the serving base station, and receiving, by the receiving device, a resource allocation result of performing resource allocation negotiation returned by the RRC coordinator.
  • the processor is configured to receive, by using a receiving device, a resource from a serving base station of the called terminal by using an inter-base station interface And an allocation request; instructing the transmitting device to send the available resource information of the serving base station of the calling terminal to the serving base station of the called terminal, and receiving, by the receiving device, a resource allocation negotiation result of the inter-device communication returned by the called terminal.
  • the processor is specifically configured to receive, by the receiving device, an interface between the base stations Determining the timing information of the called terminal of the serving base station of the called terminal and the timing information of the calling terminal; determining the timing information of the calling terminal according to the timing information of the called terminal; indicating the transmitting device The serving base station of the called terminal returns timing information of the calling terminal; or, instructing the transmitting device to send timing information of the calling terminal to the radio resource management coordinator, and receiving the radio resource management coordinator through the receiving device The returned timing information of the called terminal.
  • a mobility management entity including: a receiving device, a transmitting device, a memory, and a processor;
  • the processor is configured to: after the receiving device receives the call request of the calling terminal forwarded by the serving base station of the calling terminal, if the called terminal corresponding to the call request and the calling terminal belong to the same inter-device communication
  • the D2D cooperative set instructs the transmitting device to send the serving base station information of the called terminal to the serving base station of the calling terminal, so that the serving base station of the calling terminal and the serving base station of the called terminal perform resource allocation negotiation and timing.
  • the processor is further configured to: instruct the transmitting device to send the serving base station information of the called terminal to the serving base station of the calling terminal, or instruct the transmitting device to send the primary to the serving base station of the called terminal Before calling the serving base station information of the terminal, determining whether the called terminal is in the connected state, and if not, instructing the transmitting device to page the called terminal, so that the called terminal enters the connected state.
  • a communication system including: at least two base stations, a mobility management entity, wherein the at least two base stations include a serving base station as a calling terminal and a serving base station as a called terminal;
  • the serving base station as the calling terminal is a base station of any one of the six aspects, and the serving base station as the called terminal is a base station of any one of the seven aspects;
  • the mobility management entity is a mobility management entity in ten aspects;
  • the serving base station as the calling terminal is the base station of any one of the nine aspects
  • the serving base station as the called terminal is the base station of any one of the eight aspects
  • the mobility management entity is the mobility management in the tenth aspect of the claim Entity; or,
  • a serving base station as a calling terminal is a base station according to any one of the eleventh aspects, and a serving base station as a called terminal is a base station of any one of the twelve aspects;
  • the mobility management entity is mobility in fifteen aspects Management entity; or,
  • a serving base station as a calling terminal is a base station of any one of the fourteenth aspects, and a serving base station as a called terminal is a base station of any one of thirteen aspects; the mobility management entity is mobility in fifteen aspects Manage entities.
  • the serving base station of the calling terminal obtains the information of the serving base station of the called terminal through the mobility management entity, and then determines the serving base station of the called terminal and the called terminal according to the information of the serving base station of the called terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the terminal of the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • FIG. 1 is a schematic structural diagram of a typical D2D networking in the prior art
  • FIG. 2A is a schematic flowchart of a method according to an embodiment of the present invention
  • 2B is a schematic flowchart of a method according to an embodiment of the present invention.
  • 3A is a schematic flowchart of a method according to an embodiment of the present invention.
  • 3B is a schematic flowchart of a method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method according to an embodiment of the present invention.
  • 5A is a schematic flowchart of a method according to an embodiment of the present invention.
  • 5B is a schematic flowchart of a method according to an embodiment of the present invention.
  • 5C is a schematic flowchart of a method according to an embodiment of the present invention.
  • 5D is a schematic flowchart of a method according to an embodiment of the present invention.
  • 5E is a schematic flowchart of a method according to an embodiment of the present invention.
  • 5F is a schematic flowchart of a method according to an embodiment of the present invention.
  • 5G is a schematic flowchart of a method according to an embodiment of the present invention.
  • 5H is a schematic flowchart of a method according to an embodiment of the present invention.
  • 51 is a schematic flowchart of a method according to an embodiment of the present invention.
  • 5J is a schematic flowchart of a method according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 7A is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 7B is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 8A is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 8B is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 10A is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 10B is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 11A is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 11B is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a mobility management entity according to an embodiment of the present invention
  • FIG. 13 is a schematic structural diagram of a mobility management entity according to an embodiment of the present invention
  • 14 is a schematic structural diagram of a base station according to an embodiment of the present invention
  • 15A is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 15B is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 15C is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 16A is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 16B is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 18A is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 18B is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 18C is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 19A is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 19B is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 20 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 21 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 22 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 23 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 24 is a schematic structural diagram of a mobility management entity according to an embodiment of the present invention.
  • 25 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 26 is a schematic structural diagram of a networking according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a method for communication between devices, which is implemented on a serving base station of a calling terminal, and is initiated by the serving base station of the calling terminal. As shown in FIG. 2A, the method includes:
  • the serving base station of the calling terminal After receiving the call request of the calling terminal, the serving base station of the calling terminal forwards the call request to the mobility management entity;
  • the serving base station of the calling terminal is a base station that provides service to the calling terminal.
  • the call request may contain information such as the identification of the called terminal.
  • the MME may also determine whether the calling terminal and the called terminal are in a D2D collaborative set.
  • the selection scheme of the terminal in the D2D cooperative set may be a manner in which the received signal strength of the D2D pilot sequence is mutually higher than a predetermined threshold, to select whether to become a terminal of the set, or other manners, the present invention The embodiment does not limit this.
  • the mobility management entity may also need to determine whether the called terminal is in a connected state. If it is not in the connected state, the called terminal may be brought into a connected state by paging.
  • the MME-side execution process may not be known to the serving base station of the calling terminal.
  • 203A Determine a serving base station of the called terminal according to the serving base station information of the called terminal, and perform resource allocation negotiation and timing synchronization negotiation with the serving base station of the called terminal.
  • the embodiment of the present invention also provides two specific implementation manners of inter-base station negotiation, which are as follows:
  • the resource allocation negotiation with the serving base station of the called terminal includes: sending, by the inter-base station interface, a resource allocation request to the serving base station of the called terminal to perform resource allocation negotiation; or sending a resource allocation request to the RRC resource coordinator and the main
  • the resource status information of the serving base station of the terminal is called, and the resource allocation result of the execution resource allocation negotiation returned by the foregoing radio resource management coordinator is received.
  • the foregoing by using the inter-base station interface, to send a resource allocation request to the serving base station of the called terminal to perform resource allocation negotiation, including: sending a resource allocation request to the server base station of the called terminal through the inter-base station interface; and receiving the service of the called terminal
  • the available resource information of the serving base station of the called terminal returned by the base station, and the resource allocation negotiation result of the inter-device communication is determined accordingly.
  • the timing synchronization negotiation with the serving base station of the called terminal includes: transmitting the timing information of the calling terminal and the timing information obtaining request of the called terminal to the serving base station of the called terminal by using an inter-base station interface, and receiving the called terminal The timing information of the called terminal returned by the serving base station; or transmitting the timing information of the calling terminal and the timing information obtaining request of the called terminal to the RRC coordinator, and receiving the foregoing returned by the RRC resource coordinator Called terminal Timing information.
  • the serving base station of the calling terminal obtains the information of the serving base station of the called terminal through the mobility management entity, and then determines the serving base station of the called terminal and the called terminal according to the information of the serving base station of the called terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the embodiment of the present invention further provides another method for communication between devices, corresponding to the solution shown in FIG. 2A.
  • the method in this embodiment is implemented in the serving base station of the called terminal, as shown in FIG. 2B, and includes:
  • the serving base station of the called terminal performs resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal; the serving base station of the called terminal is used by the calling service base station according to the received received from the mobility management entity.
  • the service base station information of the called terminal is determined;
  • the mobility management entity MME-side also receives the call request of the calling terminal forwarded by the server of the autonomous calling terminal, and the MME may also determine whether the calling terminal and the called terminal are in a D2D cooperative set.
  • the selection scheme of the terminal in the D2D cooperative set may be a manner in which the received signal strength of the D2D pilot sequence is mutually higher than a predetermined threshold to select whether to become a terminal of the set, or may be other methods. The embodiments of the present invention do not limit this.
  • the mobility management entity may also need to determine whether the called terminal is in a connected state. If not in the connected state, the called terminal may be brought into a connected state by paging.
  • the MME-side execution process may not be known to the serving base station of the called terminal.
  • An embodiment of the present invention also provides an example of a specific negotiation mode for resource allocation negotiation and timing synchronization negotiation, which may be as follows:
  • the resource allocation negotiation between the serving base station of the called terminal and the serving base station of the calling terminal includes: performing resource allocation negotiation after receiving the resource allocation request sent by the serving base station of the calling terminal by using the inter-base station interface; or, coordinating to the radio resource management And transmitting resource status information of the serving base station of the called terminal, and receiving a resource allocation result of performing resource allocation negotiation returned by the foregoing radio resource management coordinator.
  • performing resource allocation negotiation includes: receiving, by using the inter-base station interface, the foregoing And a resource allocation request of the serving base station of the calling terminal; transmitting the available resource information of the serving base station of the called terminal to the serving base station of the calling terminal, and receiving a resource allocation negotiation result of the inter-device communication returned by the calling terminal.
  • the timing synchronization negotiation between the serving base station of the called terminal and the serving base station of the calling terminal includes: receiving, by the inter-base station interface, timing information of the calling terminal from the serving base station of the calling terminal, and timing information obtaining request of the called terminal. Determining and returning timing information of the called terminal to the serving base station of the calling terminal according to the timing information of the calling terminal; or transmitting timing information of the called terminal to the RRC coordinator, and receiving the foregoing radio resource The timing information of the above-mentioned calling terminal returned by the management coordinator.
  • the serving base station of the calling terminal obtains the information of the serving base station of the called terminal through the mobility management entity, and then determines the serving base station of the called terminal and the called terminal according to the information of the serving base station of the called terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the called terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the embodiment of the present invention further provides another method for communication between devices, which is implemented by the serving base station of the called terminal, and the negotiation is initiated by the serving base station of the called terminal. As shown in FIG. 3A, the method includes:
  • the serving base station of the called terminal receives the service base station information of the calling terminal sent by the mobility management entity;
  • the serving base station information of the calling terminal is sent by the mobility management entity to the serving base station of the called terminal after receiving the call request initiated by the calling terminal forwarded by the serving base station of the calling terminal.
  • the mobility management entity MME-side also receives the call request of the calling terminal forwarded by the server of the autonomous calling terminal, and the MME may also determine whether the calling terminal and the called terminal are in a D2D cooperative set.
  • the selection scheme of the terminal in the D2D cooperative set may be a manner in which the received signal strength of the D2D pilot sequence is mutually higher than a predetermined threshold to select whether to become a terminal of the set, or may be other methods. The embodiments of the present invention do not limit this.
  • the mobility management entity may also need to determine whether the called terminal is in a connected state. If not in the connected state, the called terminal may enter the connected state by paging. MME-side execution The process may not be known to the serving base station of the called terminal.
  • 302A determining, according to the serving base station information of the calling terminal, a serving base station of the calling terminal, and performing resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal;
  • the embodiment of the present invention also provides two specific implementation manners of inter-base station negotiation, which are as follows:
  • the foregoing step of performing resource allocation negotiation with the serving base station of the calling terminal includes: transmitting, by using an inter-base station interface, a resource allocation request to the serving base station of the calling terminal to perform resource allocation negotiation; or sending a resource allocation request to the RRC resource coordinator and being The resource status information of the serving base station of the terminal is called, and the resource allocation result of the execution resource allocation negotiation returned by the foregoing radio resource management coordinator is received.
  • the timing synchronization negotiation with the serving base station of the calling terminal includes: sending, by the inter-base station interface, the timing information of the calling terminal and the timing information obtaining request of the calling terminal to the serving base station of the calling terminal, and receiving the calling terminal. Or the timing information of the calling terminal returned by the serving base station; or transmitting the timing information of the called terminal and the timing information obtaining request of the calling terminal to the RRC coordinator, and receiving the foregoing returned by the RRC resource coordinator Timing information of the calling terminal.
  • 303A Send the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the called terminal, where the calling terminal and the called terminal perform device-to-device communication.
  • the serving base station of the called terminal obtains the information of the serving base station of the calling terminal through the mobility management entity, and then determines the serving base station of the calling terminal and the calling terminal according to the information of the serving base station of the calling terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the called terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the embodiment of the present invention further provides another method for communication between devices, which corresponds to the solution shown in FIG. 3A.
  • the method in this embodiment is implemented in a serving base station of a calling terminal, as shown in FIG. 3B, and includes: 301B: After receiving the call request of the calling terminal, the serving base station of the calling terminal forwards the call request to the mobility management entity; and causes the mobility management entity to send the serving base station information of the calling terminal to the called terminal corresponding to the call request. Serving the base station, and the serving base station of the called terminal determines the serving base station of the calling terminal according to the serving base station information of the calling terminal;
  • An embodiment of the present invention also provides an example of a specific negotiation mode for resource allocation negotiation and timing synchronization negotiation, which may be as follows:
  • the foregoing step of performing resource allocation negotiation with the serving base station of the calling terminal includes: performing resource allocation negotiation after receiving the resource allocation request sent by the serving base station of the called terminal by using the inter-base station interface; or sending the calling terminal to the radio resource management coordinator The resource status information of the serving base station, and receiving the resource allocation result of the execution resource allocation negotiation returned by the foregoing radio resource management coordinator.
  • the performing resource allocation negotiation after receiving the resource allocation request sent by the serving base station of the called terminal by using the inter-base station interface includes: receiving, by the inter-base station interface, a resource allocation request from the serving base station of the called terminal;
  • the serving base station of the calling terminal transmits the available resource information of the serving base station of the calling terminal, and receives the resource allocation negotiation result of the inter-device communication returned by the called terminal.
  • the timing synchronization negotiation with the serving base station of the calling terminal includes: receiving, by the inter-base station interface, timing information of the called terminal from the serving base station of the called terminal, and a timing information obtaining request of the calling terminal; The timing information of the terminal determines and returns the timing information of the calling terminal to the serving base station of the called terminal; or sends the timing information of the calling terminal to the radio resource management coordinator, and receives the return of the radio resource management coordinator Timing information of the above called terminal.
  • 303B Send the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the calling terminal, where the calling terminal and the called terminal perform device-to-device communication.
  • the serving base station of the called terminal obtains the information of the serving base station of the calling terminal through the mobility management entity, and then determines the serving base station of the calling terminal and the calling terminal according to the information of the serving base station of the calling terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the embodiment of the present invention further provides another method for communication between devices, which is implemented in a mobility management entity, as shown in FIG. 4, and includes:
  • the call request may include an identifier of the called terminal, and the mobility management entity may determine the serving base station of the called terminal according to the call, and whether the calling terminal and the called terminal belong to a D2D collaboration set.
  • the selection scheme of the terminal in the D2D cooperative set may be that the terminals mutually detect the D2D pilot sequence. Whether the signal strength is higher than a predetermined threshold, whether to be a terminal of the set, or other manners, the embodiment of the present invention does not limit this.
  • the serving base station 402 If the called terminal corresponding to the call request and the calling terminal belong to the same inter-device communication D2D cooperative set, send the serving base station information of the called terminal to the serving base station of the calling terminal, so that the calling terminal.
  • the serving base station performs resource allocation negotiation and timing synchronization negotiation with the serving base station of the called terminal, or sends the serving base station information of the calling terminal to the serving base station of the called terminal, so that the serving base station of the called terminal and the calling party
  • the serving base station of the terminal performs resource allocation negotiation and timing synchronization negotiation, and the negotiation result of the resource allocation negotiation and the timing synchronization negotiation is used for the above-mentioned calling terminal and the called terminal to perform inter-device communication.
  • the base station may obtain information of other base stations through the mobility management entity, and then determine the base station according to the information of the other base stations and perform related negotiation with the base station, so that the terminal may obtain the service base station of the terminal.
  • the negotiation D2D communication between the calling terminal and the called terminal under different base stations can be realized.
  • the method before transmitting the serving base station information of the called terminal to the serving base station of the calling terminal, or sending the serving base station information of the calling terminal to the serving base station of the called terminal, the method further includes: determining whether the called terminal is In the connected state, if not, the called terminal is paged, so that the called terminal enters the connected state, and if so, there is no need to page the called terminal.
  • the service base station of the calling terminal initiates the negotiation as an example, and the implementation of the negotiation by the serving base station of the called terminal is similar to that of the calling terminal.
  • the calling terminal and the called terminal There are two terminals, which are called the calling terminal and the called terminal respectively; and the two terminals are in a D2D cooperative set; the selection method of the terminal in the D2D cooperative set may be mutual detection of the D2D pilot sequence receiving Whether the signal strength is higher than a predetermined threshold to select whether to be a terminal of the D2D cooperative set, or other manners, the embodiment of the present invention does not limit this.
  • the specific process is shown in Figure 5A, including:
  • the calling terminal sends a call request to the serving base station of the calling terminal;
  • the serving base station of the calling terminal forwards the call request to the MME;
  • 503A The MME checks whether the current calling terminal and the called terminal are in a D2D collaboration set. If not, the calling terminal and the serving base station of the called terminal are used as a transit device to establish a communication link between the calling terminal and the called terminal; if yes, then jump to 504A;
  • the MME If the called terminal is not in the connected state, for example, in the idle state (IDLE state), the MME first paging the called terminal; the called terminal enters the connected state after receiving the paging signal (CONNECTED state);
  • the MME feeds back information of the serving base station of the called terminal to the serving base station of the calling terminal; for example, the serving base station information of the called terminal may be information such as the base station identifier of the serving base station of the called terminal.
  • the specific negotiation process can refer to step 506A and subsequent implementation descriptions of step 506A.
  • the serving base station of the calling terminal determines the called base station according to the information of the serving base station of the called terminal, and then the serving base station of the calling terminal and the serving base station of the called terminal perform resource allocation and timing synchronization negotiation, and obtain a negotiation result;
  • negotiation result should include the negotiation result of resource allocation and the negotiation result of timing synchronization.
  • the specific implementation of this step will be described in more detail in subsequent embodiments.
  • the serving base station of the calling terminal performs resource allocation and timing synchronization for the calling terminal.
  • the serving base station of the called terminal performs resource allocation and timing synchronization for the called terminal.
  • D2D communication is performed between the calling terminal and the called terminal under the different base station.
  • the process corresponding to FIG. 5A above is a process in which the serving base station of the calling terminal initiates negotiation.
  • the serving base station of the called terminal is used to initiate the negotiation process, refer to FIG. 5B: It is assumed that there are two terminals, respectively, the calling terminal. And the called terminal; and assume that the two terminals are in a D2D cooperative set; the terminal selection method in the D2D cooperative set may be to mutually detect whether the received signal strength of the D2D pilot sequence is higher than a predetermined threshold to select whether to become the A terminal of the D2D collaboration set may also be other manners, which is not limited by the embodiment of the present invention.
  • FIG. 5B including: 501B: The calling terminal sends a call request to the serving base station of the calling terminal;
  • the serving base station of the calling terminal forwards the call request to the MME;
  • 503B The MME checks whether the current calling terminal and the called terminal are in a D2D cooperative set. If not, the calling terminal and the serving base station of the called terminal establish the communication between the calling terminal and the called terminal as the transit device. Link; if yes, skip to 504B;
  • the MME feeds back information of the serving base station of the calling terminal to the serving base station of the called terminal; for example, the serving base station information of the calling terminal may be information such as the base station identifier of the serving base station of the calling terminal.
  • the specific negotiation process may refer to step 506B and subsequent implementations of step 506B.
  • the serving base station of the called terminal determines the calling base station according to the information of the serving base station of the calling terminal, and then the serving base station of the called terminal and the serving base station of the calling terminal perform resource allocation and timing synchronization negotiation, and obtain a negotiation result;
  • negotiation result should include the negotiation result of resource allocation and the negotiation result of timing synchronization.
  • the specific implementation of this step will be described in more detail in subsequent embodiments.
  • the serving base station of the calling terminal performs resource allocation and timing synchronization for the calling terminal.
  • the serving base station of the called terminal performs resource allocation and timing synchronization for the called terminal.
  • D2D communication is performed between the calling terminal and the called terminal under the different base station.
  • the embodiment of the present invention further provides a specific implementation example of the negotiation steps of the steps 506A and 506B in FIG. 5A and FIG. 5B, where the two schemes of the radio resource allocation are performed, and the two schemes of the timing synchronization information are used as an example, step 506A.
  • the negotiation steps can be as follows:
  • the interaction scheme of the radio resource allocation is to use the interface between the base stations for negotiation, as shown in Figure 5C, including:
  • the serving base station of the calling terminal sends a resource allocation request to the serving base station of the called terminal through an interface between the base stations;
  • the signaling of the resource allocation request can be carried on the X2 port.
  • the serving base station of the called terminal feeds back the available resource information of the serving base station of the called terminal to the serving base station of the calling terminal according to the resource allocation request in 5071C;
  • the feedback feedback here can also be carried on the X2 port.
  • the serving base station of the calling terminal determines the radio resource allocation scheme of the D2D communication based on the available resource information of the serving base station of the called terminal, and sends the scheme to the serving base station of the called terminal.
  • the signaling of the radio resource allocation scheme can also be carried on the X2 port.
  • the serving base station of the calling terminal sends an acknowledgment indication to the serving base station of the called terminal.
  • the signaling of the acknowledgment indication can be carried on the X2 port.
  • the embodiment of the present invention further provides a specific implementation example of the negotiation step of the 506B in FIG. 5B, where the two schemes of the radio resource allocation are used as an example, and the timing synchronization information is used as an example.
  • the negotiation step of step 506B may be specifically as follows. :
  • the interaction scheme of the radio resource allocation is to use the interface between the base stations for negotiation, as shown in Figure 5D, including:
  • the serving base station of the called terminal sends a resource allocation request to the serving base station of the calling terminal through the interface between the base stations; where the signaling of the resource allocation request can be carried on the X2 port.
  • the serving base station of the calling terminal feeds back the available resource information of the serving base station of the calling terminal to the serving base station of the called terminal according to the resource allocation request in the 5071D; the feedback signaling may also be carried on the X2 port.
  • the serving base station of the called terminal decides the radio resource allocation scheme of the D2D communication based on the available resource information of the serving base station of the calling terminal, and sends the scheme to the serving base station of the calling terminal.
  • the signaling of the radio resource allocation scheme can also be carried on the X2 port.
  • the serving base station of the calling terminal sends an acknowledgment indication to the serving base station of the calling terminal.
  • the signaling indicating the indication can be carried on the X2 port.
  • the interaction scheme of the radio resource allocation is to use the RRM eCoordinator (Radio Resource Management Coordinator) to assist the negotiation.
  • the negotiation process is initiated by the serving base station of the calling terminal, as shown in FIG. 5E.
  • the serving base station of the calling terminal sends a resource allocation request to the RRM coordinator.
  • the usage of the radio resources of the serving base station of the calling terminal may also be carried in the resource allocation request.
  • the usage of the radio resources is not carried in the resource allocation request of this step, but the interaction of the radio resource usage in the 5072E may also be performed, as shown by the dotted arrow in FIG. 5E. This embodiment of the present invention does not limit this.
  • the RRM coordinator interacts with the serving base station of the called terminal for radio resource usage
  • the specific interaction process between the RRM coordinator and the serving base station of the called terminal for radio resource usage includes at least the following two types: (1) The RRM coordinator requests the serving base station of the called terminal to send the radio resource usage, and then is The serving base station called the terminal feeds back the serving base station of the called terminal The use of the radio resources to the RRM coordinator; (2) The serving base station of the called terminal actively reports the radio resource usage to the RRM coordinator.
  • the interaction process between the RRM coordinator and the serving base station of the calling terminal for radio resource usage may be as follows: The RRM coordinator requests the calling party. The serving base station of the terminal transmits the radio resource usage, and then the serving base station of the calling terminal feeds back the usage of the radio resource of the serving base station of the calling terminal to the RRM coordinator.
  • the RRM coordinator determines a resource allocation scheme according to the serving base station radio resource usage situation of both the calling terminal and the called terminal, and then separately sends the resource allocation scheme to the calling terminal and the serving base station of the called terminal.
  • the negotiation process is initiated by the serving base station of the calling terminal.
  • the method includes: 5071F: The serving base station of the called terminal sends a resource allocation request to the RRM coordinator.
  • the usage of the radio resources of the serving base station of the called terminal may also be carried in the resource allocation request.
  • the use of radio resources is not carried in the resource allocation request of this step, but the interaction of radio resource usage in 5072F is also possible, as shown by the dotted arrow in Figure 5F. This embodiment of the present invention does not limit this.
  • the RRM coordinator interacts with the serving base station of the calling terminal for radio resource usage
  • the specific interaction process between the RRM coordinator and the serving base station of the calling terminal for radio resource usage includes at least the following two types: (1) The RRM coordinator requests the serving base station of the calling terminal to send the radio resource usage, and then the main The serving base station of the calling terminal feeds back the usage of the radio resources of the serving base station of the calling terminal to the RRM coordinator; (2) The serving base station of the calling terminal actively reports the radio resource usage to the RRM coordinator.
  • the interaction process between the RRM coordinator and the serving base station of the called terminal for radio resource usage may be as follows: The RRM coordinator requests the called party The serving base station of the terminal transmits the radio resource usage, and then the serving base station of the called terminal feeds back the usage of the radio resource of the serving base station of the called terminal to the RRM coordinator.
  • the RRM coordinator makes based on the radio resources of the serving base station of both the calling terminal and the called terminal.
  • the resource allocation scheme is determined by the situation, and then the resource allocation scheme is separately sent to the calling terminal and the serving base station of the called terminal.
  • the interaction scheme of the timing synchronization information is to use the interface between the base stations to negotiate. If the negotiation is initiated by the serving base station of the calling terminal, please refer to FIG. 5G, including:
  • the serving base station of the calling terminal sends the timing information of the calling terminal to the serving base station of the called terminal; the timing information is information for determining the signal receiving and/or transmitting time of the terminal.
  • the foregoing signaling carrying the timing information of the calling terminal may also carry the knowledge request of the timing information of the called terminal.
  • the timing information and the signaling for obtaining the request can be carried on the X2 port.
  • the request for obtaining the timing information of the called terminal may also be sent by using separate signaling without sharing the signaling with the timing information of the calling terminal.
  • the timing information and the manner in which the request is received are specifically transmitted, which is not limited in this embodiment of the present invention.
  • the serving base station of the called terminal sends the timing information of the called terminal to the serving base station of the calling terminal after receiving the received request for the called terminal timing information.
  • the signaling of the timing information can be carried on the X2 port.
  • FIG. 5H including:
  • the serving base station of the called terminal transmits the timing information of the called terminal to the serving base station of the calling terminal; the timing information is information for determining the signal receiving and/or transmitting time of the terminal.
  • the signaling carrying the timing information of the called terminal may also carry the knowledge request of the timing information of the calling terminal.
  • the timing information and the signaling for obtaining the request can be carried on the X2 port.
  • the request for obtaining the timing information of the calling terminal may also be sent by using separate signaling, without sharing the signaling with the timing information of the called terminal.
  • the timing information and the manner in which the request is received are specifically transmitted, which is not limited in this embodiment of the present invention.
  • the serving base station of the calling terminal sends the timing information of the calling terminal to the serving base station of the called terminal after receiving the received request for the called terminal timing information.
  • the signaling of the timing information can be carried on the X2 port.
  • the second synchronization scheme of the timing synchronization information uses the RRM coordinator to assist the negotiation. If the serving base station of the calling terminal initiates the negotiation, as shown in FIG. 51, the method includes:
  • the serving base station of the calling terminal sends a request to the RRM coordinator to learn the timing of the called terminal.
  • the request for information may include timing information of the calling terminal in the signaling requesting the request for the timing information of the called terminal;
  • the RRM coordinator interacts with the serving base station of the called terminal;
  • the process of the RRM coordinator interacting with the serving base station of the called terminal may include the following aspects: (1) transmitting the calling terminal timing information to the serving base station of the called terminal, and (2) requesting the serving base station of the called terminal to provide feedback.
  • the timing information of the called terminal, (3) the serving base station of the called terminal sends the timing information of the called terminal to the RRM coordinator;
  • the RRM coordinator forwards the timing information of the called terminal to the serving base station of the calling terminal. If the negotiation is initiated by the serving base station of the called terminal, as shown in FIG. 5J, it includes:
  • the serving base station of the called terminal sends a request for obtaining the timing information of the calling terminal to the RRM coordinator, and the signaling of the request for obtaining the timing information of the calling terminal may include the timing information of the called terminal.
  • the RRM coordinator interacts with the serving base station of the calling terminal;
  • the process of the RRM coordinator interacting with the serving base station of the calling terminal may include the following aspects: (1) transmitting the called terminal timing information to the serving base station of the calling terminal, and (2) requesting the serving base station of the calling terminal to provide feedback.
  • the timing information of the calling terminal, (3) the serving base station of the calling terminal sends the timing information of the calling terminal to the RRM coordinator;
  • the RRM coordinator forwards the timing information of the calling terminal to the serving base station of the called terminal.
  • the two can be independently negotiated, and the various information to be sent by the resource allocation negotiation and the timing synchronization negotiation may be carried together.
  • the independent flow is described in the above embodiment only to make the flow of resource allocation negotiation and timing synchronization negotiation clearer.
  • FIG. 5C when various information is carried together for transmission, reference may be made to the foregoing FIG. 5C to FIG. 5J, for example: 5071C and 5071G, 5072G and 5072C, 5071D and 5071H, 5072H and 5072D, 5071E and 50711, 5072E and 50721. , 5073E and 50731, 5071F and 5071J,
  • the 5072F and 5072J, 5073F and 5073J can be transmitted together using the bearer.
  • the accompanying drawings of the present invention will not be described again.
  • An embodiment of the present invention further provides a base station, as shown in FIG. 6, including:
  • a first call request receiving unit 601 configured to receive a call request of the calling terminal
  • the first call request sending unit 602 is configured to forward the call request received by the first call request receiving unit 601 to the mobility management entity;
  • the first base station information receiving unit 603 is configured to receive the serving base station information of the called terminal corresponding to the call request sent by the first call request sending unit 602 returned by the mobility management entity;
  • the first base station determining unit 604 is configured to determine, according to the serving base station information of the called terminal received by the first base station information receiving unit 603, the serving base station of the called terminal;
  • the first negotiation control unit 605 is configured to control resource allocation negotiation and timing synchronization negotiation with the serving base station of the called terminal determined by the first base station determining unit 604;
  • the first result sending unit 606 is configured to send the negotiation result of the resource negotiation negotiation and the timing synchronization negotiation by the first negotiation control unit 605 to the calling terminal, where the negotiation result is used by the calling terminal and the called terminal to perform equipment between the devices. Communication.
  • the serving base station of the calling terminal obtains the information of the serving base station of the called terminal through the mobility management entity, and then determines the serving base station of the called terminal and the called terminal according to the information of the serving base station of the called terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the foregoing first negotiation control unit 605 includes:
  • the first sending unit 701 is configured to send a resource allocation request to the serving base station of the called terminal to perform resource allocation negotiation through the inter-base station interface.
  • the first negotiation control unit 605 includes:
  • the second sending unit 702 is configured to send, to the RRC resource coordinator, a resource allocation request and resource status information of the serving base station of the calling terminal;
  • the first result receiving unit 703 is configured to receive a resource allocation result of the execution resource allocation negotiation returned by the foregoing radio resource management coordinator.
  • the first sending unit 701 is specifically configured to send a resource allocation request to a server base station of the called terminal through an inter-base station interface, and return the serving base station of the called terminal to the serving base station of the called terminal.
  • the resource information is available, and the first negotiation control unit 605 determines the resource allocation negotiation result of the inter-device communication accordingly.
  • the foregoing first negotiation control unit 605 includes:
  • a third sending unit 801 configured to send, by using an inter-base station interface, to a serving base station of the called terminal The timing information of the calling terminal and the timing information of the called terminal are obtained;
  • the first timing information receiving unit 802 is configured to receive the timing information of the called terminal that is returned by the serving base station of the called terminal; or, as shown in FIG. 8B, the first negotiation control unit 605 includes: a fourth sending unit 803. And sending, to the RRC coordinator, the timing information of the calling terminal and the timing information obtaining request of the called terminal;
  • the second timing signal receiving unit 804 is configured to receive timing information of the called terminal returned by the foregoing radio resource management coordinator.
  • An embodiment of the present invention further provides another base station, as shown in FIG. 9, including:
  • the second base station information receiving unit 901 is configured to receive the serving base station information of the calling terminal sent by the mobility management entity;
  • the second base station determining unit 902 is configured to determine, according to the serving base station information of the calling terminal received by the first base station information receiving unit 603, the serving base station of the calling terminal;
  • a second negotiation control unit 903 configured to control resource allocation negotiation and timing synchronization negotiation with the serving base station of the foregoing calling terminal determined by the second base station determining unit 902;
  • the second result sending unit 904 is configured to send the negotiation result of the resource negotiation negotiation and the timing synchronization negotiation by the second negotiation control unit 903 to the called terminal, where the calling terminal and the called terminal perform inter-device communication.
  • the serving base station of the called terminal obtains the information of the serving base station of the calling terminal through the mobility management entity, and then determines the serving base station of the calling terminal and the calling terminal according to the information of the serving base station of the calling terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the called terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the foregoing second negotiation control unit 903 includes:
  • the fifth sending unit 1001 is configured to send a resource allocation request to the serving base station of the calling terminal to perform resource allocation negotiation through the inter-base station interface.
  • the second negotiation control unit 903 includes:
  • a sixth sending unit 1002 configured to send, to the RRC resource coordinator, a resource allocation request and resource status information of the serving base station of the called terminal;
  • the second result receiving unit 1003 is configured to receive a resource allocation result of performing resource allocation negotiation returned by the foregoing radio resource management coordinator. More specifically, in FIG. 10A, the fifth sending unit 1001 is specifically configured to send a resource allocation request to a server base station of the calling terminal through an inter-base station interface, and return the serving base station of the calling terminal to the serving base station of the calling terminal. The resource information is available, and the second negotiation control unit 903 determines the resource allocation negotiation result of the inter-device communication accordingly.
  • the foregoing second negotiation control unit 903 includes:
  • the seventh sending unit 1101 is configured to send timing information of the calling terminal and a timing information obtaining request of the calling terminal to the serving base station of the calling terminal by using an inter-base station interface;
  • the third timing information receiving unit 1102 is configured to receive the timing information of the calling terminal that is returned by the serving base station of the calling terminal; or, as shown in FIG. 11B, the second negotiation control unit 903 includes:
  • the eighth sending unit 1103 is configured to send the timing information of the called terminal and the timing information obtaining request of the calling terminal to the RRC coordinator;
  • the fourth timing information receiving unit 1104 is configured to receive timing information of the calling terminal returned by the radio resource management coordinator.
  • the embodiment of the present invention further provides a mobility management entity, as shown in FIG. 12, including: a second call request receiving unit 1201, configured to receive a call request of a calling terminal forwarded by a serving base station of the calling terminal;
  • the set determining unit 1202 is configured to determine whether the called terminal corresponding to the call request received by the second call request receiving unit 1201 and the calling terminal belong to the same D2D cooperative set; and the base station information sending unit 1203 is configured to determine the set
  • the unit 1202 determines that the called terminal corresponding to the call request belongs to the same D2D cooperative set as the calling terminal, and sends the serving base station information of the called terminal to the serving base station of the calling terminal, so that the serving base station of the calling terminal and the calling terminal
  • the serving base station of the called terminal performs resource allocation negotiation and timing synchronization negotiation, or sends the serving base station information of the calling terminal to the serving base station of the called terminal, so that the serving base station of the called terminal and the calling terminal service
  • the base station performs resource allocation negotiation and timing synchronization negotiation, and the negotiation result of the resource allocation negotiation and the timing synchronization negotiation is used for the above-mentioned calling terminal and the called terminal to perform inter-device communication.
  • the base station may obtain information of other base stations through the mobility management entity, and then determine the base station according to the information of the other base stations and perform related negotiation with the base station, so that the terminal may obtain the service base station of the terminal.
  • Negotiation results so that the main under different base stations can be realized Call D2D communication between the terminal and the called terminal.
  • the mobility management entity further includes:
  • the state determining unit 1301 is configured to send, by the base station information sending unit 1203, the serving base station information of the called terminal to the serving base station of the calling terminal, or send the serving base station of the calling terminal to the serving base station of the called terminal. Before the information, it is determined whether the called terminal is in the connected state.
  • the paging control unit 1302 is configured to: if the status determining unit 1301 determines that the result is no, page the called terminal to make the called terminal enter the connected state. If it is a connected state, the paging base station may be configured to send the serving base station information of the called terminal directly to the serving base station of the calling terminal, or send the service of the calling terminal to the serving base station of the called terminal. Base station information.
  • the embodiment of the present invention further provides another base station, as shown in FIG. 14, including:
  • the third negotiation control unit 1401 is configured to perform resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal.
  • the serving base station of the called terminal is used by the calling service base station according to the received received mobility management entity.
  • the service base station information of the called terminal is determined;
  • the third result sending unit 1402 is configured to send the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the called terminal, where the calling terminal and the called terminal perform inter-device communication.
  • the serving base station of the calling terminal obtains the information of the serving base station of the called terminal through the mobility management entity, and then determines the serving base station of the called terminal and the called terminal according to the information of the serving base station of the called terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the called terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the foregoing third negotiation control unit 1401 includes:
  • the first receiving unit 1501 is configured to receive, by using the inter-base station interface, the resource allocation request sent by the serving base station of the calling terminal to perform the resource allocation negotiation; or the third negotiation control unit 1401 includes:
  • the ninth sending unit 1502 is configured to send, to the RRC resource coordinator, resource status information of the serving base station of the called terminal;
  • the third result receiving unit 1503 is configured to receive a resource allocation result of performing resource allocation negotiation returned by the foregoing radio resource management coordinator.
  • the foregoing first receiving unit 1501 is specifically configured to pass through a base station.
  • the inter-interface receives the resource allocation request from the serving base station of the calling terminal, and the third negotiation control unit 1401 further includes:
  • the ninth sending unit 1504 is configured to send, to the serving base station of the calling terminal, the available resource information of the serving base station of the called terminal;
  • the fourth result receiving unit 1505 is configured to receive a resource allocation negotiation result of the inter-device communication returned by the calling terminal.
  • the foregoing third negotiation control unit 1401 includes:
  • the second receiving unit 1601 is configured to receive timing information of the calling terminal from the serving base station of the calling terminal and a timing information obtaining request of the called terminal by using an inter-base station interface, and configured to determine, according to the timing information of the calling terminal, Timing information of the above called terminal;
  • the fourth result sending unit 1602 is configured to: return the timing information of the called terminal to the serving base station of the calling terminal; or, as shown in FIG. 16B, the third negotiation control unit 1401 includes: a tenth sending unit 1603, Sending the timing information of the called terminal to the radio resource management coordinator;
  • the fifth result receiving unit 1604 is configured to receive timing information of the calling terminal returned by the radio resource management coordinator.
  • the embodiment of the present invention further provides another base station, as shown in FIG. 17, including:
  • a third call request receiving unit 1701 configured to receive a call request of the calling terminal
  • the second call request sending unit 1702 is configured to forward the call request received by the third call request receiving unit 1701 to the mobility management entity, and enable the mobility management entity to send the serving base station information of the calling terminal to the call request.
  • Corresponding service base station of the called terminal, and the serving base station of the called terminal determines the serving base station of the calling terminal according to the serving base station information of the calling terminal;
  • the fourth negotiation control unit 1703 is configured to be used with the calling terminal.
  • the serving base station performs resource allocation negotiation and timing synchronization negotiation;
  • the fifth result sending unit 1704 is configured to send the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the calling terminal, where the calling terminal and the called terminal perform inter-device communication.
  • the foregoing fourth negotiation control unit 1703 includes:
  • the fourth negotiation control unit 1703 includes:
  • the eleventh sending unit 1802 is configured to send, to the RRC resource coordinator, resource status information of the serving base station of the calling terminal;
  • the sixth result receiving unit 1803 is configured to receive a resource allocation result of performing resource allocation negotiation returned by the foregoing radio resource management coordinator.
  • the third receiving unit 1803 is specifically configured to receive a resource allocation request from the serving base station of the called terminal by using an inter-base station interface.
  • the fourth negotiation control unit 1703 further includes:
  • the twelfth sending unit 1804 is configured to send, to the serving base station of the called terminal, the available resource information of the serving base station of the calling terminal;
  • the seventh result receiving unit 1805 is configured to receive a resource allocation negotiation result of the inter-device communication returned by the called terminal.
  • the foregoing fourth negotiation control unit 1703 includes:
  • the fourth receiving unit 1901 is configured to receive, by using an inter-base station interface, timing information of the called terminal from the serving base station of the called terminal, and a timing information obtaining request of the calling terminal; the timing information for the called terminal determines the foregoing Timing information of the calling terminal;
  • the sixth result sending unit 1902 is configured to return the timing information of the calling terminal to the serving base station of the called terminal; or, as shown in FIG. 19B, the fourth negotiation control unit 1703 includes: a thirteenth sending unit 1903, Means for transmitting timing information of the foregoing calling terminal to the radio resource management coordinator;
  • the eighth result receiving unit 1904 is configured to receive timing information of the called terminal returned by the foregoing radio resource management coordinator.
  • the serving base station of the called terminal obtains the information of the serving base station of the calling terminal through the mobility management entity, and then determines the serving base station of the calling terminal and the calling terminal according to the information of the serving base station of the calling terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the embodiment of the present invention further provides another base station, as shown in FIG. 20, including: a receiving device 2001, a transmitting device 2002, a memory 2003, and a processor 2004;
  • the processor 2004 is configured to: after the receiving device 2001 receives the call request of the calling terminal, instruct the transmitting device 2002 to forward the call request to the mobility management entity; and receive, by the receiving device 2001, the mobility management entity to return After the serving base station information of the called terminal corresponding to the call request, determining the serving base station of the called terminal according to the serving base station information of the called terminal, and performing resource allocation negotiation and timing synchronization negotiation with the serving base station of the called terminal;
  • the transmitting device 2002 is instructed to send the negotiation result of the resource allocation negotiation and the timing synchronization negotiation to the calling terminal, and the foregoing negotiation result is used for the inter-device communication between the calling terminal and the called terminal.
  • the serving base station of the calling terminal obtains the information of the serving base station of the called terminal through the mobility management entity, and then determines the serving base station of the called terminal and the called terminal according to the information of the serving base station of the called terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the processor 2004 is specifically configured to instruct the transmitting device 2002 to send a resource allocation request to the serving base station of the called terminal to perform resource allocation negotiation by using an inter-base station interface; or, instructing the transmitting device 2002 to send to the RRC coordinator.
  • the resource allocation request and the resource status information of the serving base station of the calling terminal, and the receiving device 2001 receives the resource allocation result of the execution resource allocation negotiation returned by the RRC resource coordinator.
  • the processor 2004 is specifically configured to instruct the transmitting device 2002 to send a resource allocation request to the server base station of the called terminal through the inter-base station interface; and then receive, by the receiving device 2001, the called terminal returned by the serving base station of the called terminal.
  • the available resource information of the serving base station and based on this, determines the resource allocation negotiation result of the communication between the devices.
  • the processor 2004 is specifically configured to instruct the transmitting device 2002 to send the timing information of the calling terminal and the timing information obtaining request of the called terminal to the serving base station of the called terminal by using an inter-base station interface, by using the receiving device 2001.
  • the embodiment of the present invention further provides another base station, as shown in FIG. 21, comprising: a receiving device 2101, a transmitting device 2102, a memory 2103, and a processor 2104;
  • the processor 2104 is configured to perform resource allocation negotiation with a serving base station of the calling terminal.
  • Negotiating with the timing synchronization; the serving base station of the called terminal is determined by the calling serving base station according to the received serving base station information of the called terminal from the mobility management entity; and the resource allocation negotiation and timing synchronization are performed by the transmitting device 2102.
  • the negotiation result is sent to the called terminal, and the calling terminal and the called terminal perform device-to-device communication.
  • the serving base station of the calling terminal obtains the information of the serving base station of the called terminal through the mobility management entity, and then determines the serving base station of the called terminal and the called terminal according to the information of the serving base station of the called terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the processor 2104 is specifically configured to instruct the transmitting device 2102 to perform resource allocation negotiation after receiving the resource allocation request sent by the serving base station of the calling terminal by using the inter-base station interface; or, instructing the transmitting device 2102 to coordinate with the radio resource management.
  • the device transmits the resource status information of the serving base station of the called terminal, and receives, by the receiving device 2101, the resource allocation result of the execution resource allocation negotiation returned by the RRC resource coordinator.
  • the processor 2104 is specifically configured to instruct the transmitting device 2102 to receive a resource allocation request from the serving base station of the calling terminal by using an inter-base station interface, and send the serving base station of the called terminal to the serving base station of the calling terminal.
  • the available resource information, and the receiving device 2101 receives the resource allocation negotiation result of the inter-device communication returned by the calling terminal.
  • the processor 2104 is configured to receive timing information of the calling terminal from the serving base station of the calling terminal and a timing information obtaining request of the called terminal by using the receiving device 2101 through the inter-base station interface;
  • the timing information of the called terminal determines the timing information of the called terminal;
  • the transmitting device 2102 is instructed to return the timing information of the called terminal to the serving base station of the calling terminal; or, the transmitting device 2102 is instructed to send the foregoing to the RRC coordinator.
  • the timing information of the terminal is called, and the timing information of the calling terminal returned by the radio resource management coordinator is received by the receiving device 2101.
  • the embodiment of the present invention further provides another base station, as shown in FIG. 22, comprising: a receiving device 2201, a transmitting device 2202, a memory 2203, and a processor 2204;
  • the processor 2204 is configured to: after receiving, by the receiving device 2201, the serving base station information of the calling terminal sent by the mobility management entity, determine, according to the serving base station information of the calling terminal, the serving base station of the calling terminal, and the foregoing
  • the serving base station of the calling terminal performs resource allocation negotiation and timing Step negotiation:
  • the result of the negotiation of the resource allocation negotiation and the timing synchronization negotiation is sent to the called terminal by the transmitting device 2202, and is used for performing the inter-device communication between the calling terminal and the called terminal.
  • the serving base station of the called terminal obtains the information of the serving base station of the calling terminal through the mobility management entity, and then determines the serving base station of the calling terminal and the calling terminal according to the information of the serving base station of the calling terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the processor 2204 is specifically configured to instruct the sending device 2202 to send a resource allocation request to the serving base station of the calling terminal to perform resource allocation negotiation through the inter-base station interface, or to indicate that the transmitting device 2202 coordinates the radio resource management.
  • the device transmits a resource allocation request and resource status information of the serving base station of the called terminal, and receives, by the receiving device 2201, a resource allocation result of the execution resource allocation negotiation returned by the RRC resource coordinator.
  • the processor 2204 is specifically configured to instruct the transmitting device 2202 to send a resource allocation request to the server base station of the calling terminal through the inter-base station interface, and receive, by the receiving device 2201, the calling terminal returned by the serving base station of the calling terminal.
  • the available resource information of the serving base station, and the resource allocation negotiation result of the communication between the devices is determined accordingly.
  • the processor 2204 is specifically configured to instruct the transmitting device 2202 to send the timing information of the calling terminal and the timing information obtaining request of the calling terminal to the serving base station of the calling terminal by using the inter-base station interface, by using the receiving device 2201. Receiving the timing information of the calling terminal returned by the serving base station of the calling terminal; or, for instructing the transmitting device 2202 to send the timing information of the called terminal and the timing information obtaining request of the calling terminal to the RRC coordinator, And receiving, by the receiving device 2201, timing information of the calling terminal returned by the radio resource management coordinator.
  • the embodiment of the present invention further provides another base station, as shown in FIG. 23, comprising: a receiving device 2301, a transmitting device 2302, a memory 2303, and a processor 2304;
  • the processor 2304 is configured to: after receiving the call request of the calling terminal by the receiving device 2301, instruct the transmitting device 2302 to forward the call request to the mobility management entity; and enable the mobility management entity to
  • the serving base station information is sent to the serving base station of the called terminal corresponding to the call request, and the serving base station of the called terminal determines the serving base station of the calling terminal according to the serving base station information of the calling terminal; and the service of the calling terminal
  • the base station performs resource allocation negotiation and timing synchronization negotiation; and instructs the transmitting device 2302 to negotiate the resource allocation negotiation and the timing synchronization negotiation.
  • the quotient result is sent to the calling terminal, and is used for performing the inter-device communication between the calling terminal and the called terminal.
  • the serving base station of the called terminal obtains the information of the serving base station of the calling terminal through the mobility management entity, and then determines the serving base station of the calling terminal and the calling terminal according to the information of the serving base station of the calling terminal.
  • the serving base station performs related negotiation and sends the negotiation result to the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the processor 2304 is configured to: after receiving, by the receiving device 2301, the resource allocation request sent by the serving base station of the called terminal by using the inter-base station interface, perform resource allocation negotiation; or, instruct the transmitting device 2302 to coordinate with the radio resource management.
  • the device transmits the resource status information of the serving base station of the calling terminal, and receives, by the receiving device 2301, the resource allocation result of the execution resource allocation negotiation returned by the RRC resource coordinator.
  • the processor 2304 is specifically configured to receive, by the receiving device 2301, a resource allocation request from the serving base station of the called terminal by using an inter-base station interface, and instruct the transmitting device 2302 to send the foregoing calling party to the serving base station of the called terminal.
  • the processor 2304 is configured to receive timing information of the called terminal from the serving base station of the called terminal and a timing information obtaining request of the calling terminal by using the receiving device 2301 through the inter-base station interface; Determining the timing information of the calling terminal to determine the timing information of the calling terminal; instructing the transmitting device 2302 to return the timing information of the calling terminal to the serving base station of the called terminal; or instructing the transmitting device 2302 to send the foregoing main message to the RRC coordinator
  • the timing information of the called terminal is received, and the timing information of the called terminal returned by the foregoing radio resource management coordinator is received by the receiving device 2301.
  • the embodiment of the present invention further provides a mobility management entity, as shown in FIG. 24, comprising: a receiving device 2401, a transmitting device 2402, a memory 2403, and a processor 2404;
  • the processor 2404 is configured to: after the receiving device 2401 receives the call request of the calling terminal forwarded by the serving base station of the calling terminal, if the called terminal corresponding to the call request and the calling terminal belong to the same inter-device communication
  • the D2D cooperative set instructs the transmitting device 2402 to send the serving base station information of the called terminal to the serving base station of the calling terminal, so that the serving base station of the calling terminal and the serving base station of the called terminal perform resource allocation negotiation and timing synchronization negotiation.
  • the transmitting device 2402 instructing the transmitting device 2402 to send the serving base station information of the calling terminal to the serving base station of the called terminal, so that The serving base station of the called terminal performs resource allocation negotiation and timing synchronization negotiation with the serving base station of the calling terminal, and the negotiation result of the resource allocation negotiation and the timing synchronization negotiation is used for the inter-device communication between the calling terminal and the called terminal.
  • the base station may obtain information of other base stations through the mobility management entity, and then determine the base station according to the information of the other base stations and perform related negotiation with the base station, so that the terminal may obtain the service base station of the terminal.
  • the negotiation D2D communication between the calling terminal and the called terminal under different base stations can be realized.
  • the processor 2404 is further configured to: instruct the transmitting device 2402 to send the serving base station information of the called terminal to the serving base station of the calling terminal, or instruct the transmitting device 2402 to send the foregoing to the serving base station of the called terminal. Before the serving base station information of the calling terminal, it is determined whether the called terminal is in the connected state. If not, the transmitting device 2402 is instructed to page the called terminal, so that the called terminal enters the connected state.
  • the embodiment of the present invention further provides a communication system.
  • the method includes: at least two base stations 2501, one mobility management entity 2502, and the at least two base stations 2501 include one serving base station as a calling terminal. And a serving base station as the called terminal;
  • the serving base station as the calling terminal is the base station of any one of FIG. 6 to FIG. 8B, and the serving base station as the called terminal is the base station of any of FIGS. 14 to 16B;
  • the mobility management entity is FIG. 12 or FIG. Mobility management entity; or
  • the serving base station as the calling terminal is the base station of any one of FIGS. 17 to 19B, and the serving base station as the called terminal is the base station of any one of FIG. 9 to FIG. 11B;
  • the mobility management entity is FIG. 12 or FIG. Mobility management entity; or
  • the serving base station as the calling terminal is the base station in FIG. 20, and the serving base station as the called terminal is the base station in FIG. 21; the mobility management entity is the mobility management entity in FIG. 24; or, as the calling terminal
  • the serving base station is the base station in FIG. 22, and the serving base station as the called terminal is the base station in FIG. 23; the mobility management entity is the mobility management entity of FIG.
  • a schematic diagram of the networking structure of the foregoing communication system and the terminal networking is performed, including two base stations (eNB1 and eNB2), and one MME, which are respectively located at two terminals (UE1 and UE2) under two base stations.
  • UE1 and UE2 User Equipment
  • D2D communication is used between UE1 and UE2.
  • the serving base station of the called terminal obtains the calling terminal through the mobility management entity.
  • the information of the serving base station is then determined according to the information of the serving base station of the calling terminal, and the serving base station of the calling terminal is negotiated with the serving base station of the calling terminal, and the negotiation result is sent to the calling terminal, which can be implemented.
  • D2D communication between the calling terminal and the called terminal under different base stations.
  • the serving base station of the calling terminal obtains the information of the serving base station of the called terminal through the mobility management entity, and then determines the serving base station of the called terminal according to the information of the serving base station of the called terminal, and The serving base station of the terminal performs related negotiation, and sends the negotiation result to the calling terminal, so that D2D communication between the calling terminal and the called terminal under the different base station can be realized.
  • the storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Abstract

设备间通信的方法、装置和系统；其中方法的实现包括：主叫终端的服务基站在接收主叫终端的呼叫请求后，将所述呼叫请求转发给移动性管理实体；接收移动性管理实体返回的所述呼叫请求对应的被叫终端的服务基站信息；依据所述被叫终端的服务基站信息确定被叫终端的服务基站，并与所述被叫终端的服务基站进行资源分配协商和定时同步协商；将资源分配协商和定时同步协商的协商结果发送给主叫终端，所述协商结果用于所述主叫终端与被叫终端进行设备间通信。这样可以实现异基站下的主叫终端与被叫终端间的D2D通信。

Description

设备间通信的方法、 装置和系统
技术领域
本发明涉及通信技术领域，特別涉及一种设备间通信的方法、装置和系统。 背景技术
随着移动通信技术的发展， 移动通信系统演进将带来带宽需求的不断增 加， 这会使带宽分配变的越来越拥挤。 由于可用于移动通信的频谱资源十分有 限， 这样就出现了带宽供不应求的情况。 为了緩解带宽供不应求的情况， 需要 更加高效的利用频谱资源， 基于这样的想法， D2D ( device to device, 设备间） 通信技术应运而生。 D2D通信方式是一种不经过 eNB ( evolved Node B,基站） 转接而直接进行数据交换或服务提供的技术。
如图 1所示的典型 D2D组网结构示意图， D2D的业务传输可以不经由基 站转发， 而是直接通过终端与终端的交互来完成； 而基站只起到基本的控制作 用。 由于 D2D的业务传输资源有可能使用原有的蜂窝无线资源 （例如： 频域 资源）， 所以基站需要进行相应地调度和资源分配来帮助终端间进行 D2D 通 信； 另外终端间的同步也可以通过基站来完成， 例如： 图 1中终端 1和终端 2 的收发同步可以通过基站的辅助完成，例如这两个终端都可以从服务基站获得 收发的时间点，从而知道对方终端数据的发送时间点，从而保证数据收发同步。
终端间的相互发现则可以通过解析终端发送的 D2D 导频序列来进行判 断， 例如： 当终端解析到某一个 D2D的导频序列的接收信号强度强于既定门 限， 就可以将该导频序列上报给网络侧， 网络侧将这个终端加入当前终端的可 进行 D2D通信的候选集合中； 当终端 1需要和终端 2进行通信时， 网络侧会 判断是否可以进行 D2D通信，也就是判断终端 2是否在终端 1的 D2D通信的 候选集中， 如果在则进行 D2D通信， 如果不在则进行常规的基站转发的通信。
具体地， 在同一个基站下的两个终端进行 D2D通信， 如下：
两个终端在一个 D2D协作集合内。这个 D2D协作集合中终端的选择方法 可以是相互探测 D2D导频序列的接收信号强度是否高于既定门限来选择是否 成为此 D2D协作集合的一个终端， 也可以是其他方式， 在此不做限制。 步骤 1： 主叫终端向网络侧发送呼叫请求；
网络侧的设备可以是上述主叫终端的服务基站或者 MME ( Mobile Management Entity , 移动性管理实体）。
步骤 2: 网络侧判断这个呼叫请求对应的被叫终端与上述主叫终端是否在 一个 D2D协作集合中；
步骤 3: 如果被叫终端是空闲态（ IDLE态）终端， MME先寻呼（ paging ) 被叫终端； 然后再由服务基站向被叫终端发起 D2D呼叫请求； 如果被叫终端 是连接态（connected态）终端， 那么可以由服务基站向被叫终端发起 D2D呼 叫请求。
步骤 4: 服务基站为 D2D通信双方分配无线资源并告知收发定时信息； 步骤 5: 主叫终端和被叫终端分別依据上述收发定时信息进行 D2D通信。 目前的 D2D通信流程仅给出了在同一个服务基站下的主叫终端和被叫终 端间进行 D2D通信的方案；如果异服务基站下的两个终端需要采用 D2D通信， 那么一个服务基站就无法决定资源的分配和收发定时信息了，上述套流程无法 支持异 eNB下的终端间的 D2D通信。 发明内容
本发明实施例提供了一种设备间通信的方法、装置和系统， 用于实现异基 站下终端设备的 D2D通信。
一方面， 提供了一种设备间通信的方法， 包括：
主叫终端的服务基站在接收主叫终端的呼叫请求后，将所述呼叫请求转发 给移动性管理实体；
接收移动性管理实体返回的所述呼叫请求对应的被叫终端的服务基站信 息；
依据所述被叫终端的服务基站信息确定被叫终端的服务基站，并与所述被 叫终端的服务基站进行资源分配协商和定时同步协商；
将资源分配协商和定时同步协商的协商结果发送给主叫终端，所述协商结 果用于所述主叫终端与被叫终端进行设备间通信。
结合一方面的实现方式，在第一种可能的实现方式中， 所述与所述被叫终 端的服务基站进行资源分配协商包括：
通过基站间接口向所述被叫终端的服务基站发送资源分配请求进行资源 分配协商； 或者， 向无线资源管理协调器发送资源分配请求以及主叫终端的服 务基站的资源状况信息，并接收所述无线资源管理协调器返回的执行资源分配 协商的资源分配结果。
结合一方面中的第一种可能的实现方式，在第二种可能的实现方式中， 所 述通过基站间接口向所述被叫终端的服务基站发送资源分配请求进行资源分 配协商包括：
通过基站间接口将资源分配请求发送给被叫终端的服务器基站；接收被叫 终端的服务基站返回的被叫终端的服务基站的可用资源信息，并据此确定设备 间通信的资源分配协商结果。
结合一方面、 一方面的第一种、 或第二种可能的实现方式， 在第三种可能 的实现方式中， 所述与所述被叫终端的服务基站进行定时同步协商包括： 通过基站间接口向所述被叫终端的服务基站发送所述主叫终端的定时信 息以及被叫终端的定时信息获知请求，接收所述被叫终端的服务基站返回的所 述被叫终端的定时信息； 或者， 向无线资源管理协调器发送所述主叫终端的定 时信息以及被叫终端的定时信息获知请求，并接收所述无线资源管理协调器返 回的所述被叫终端的定时信息。
二方面， 提供了一种设备间通信的方法， 包括：
被叫终端的服务基站与主叫终端的服务基站进行资源分配协商和定时同 步协商； 所述被叫终端的服务基站， 由所述主叫服务基站依据接收到的来自移 动性管理实体的所述被叫终端的服务基站信息确定；
将资源分配协商和定时同步协商的协商结果发送给被叫终端，用于所述主 叫终端与被叫终端进行设备间通信。
结合二方面的实现方式，在第一种可能的实现方式中， 所述被叫终端的服 务基站与主叫终端的服务基站进行资源分配协商包括：
通过基站间接口接收所述主叫终端的服务基站发送的资源分配请求后执 行资源分配协商； 或者， 向无线资源管理协调器发送被叫终端的服务基站的资 源状况信息，并接收所述无线资源管理协调器返回的执行资源分配协商的资源 分配结果。
结合二方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述 通过基站间接口接收所述主叫终端的服务基站发送的资源分配请求后执行资 源分配协商包括：
通过基站间接口接收来自所述主叫终端的服务基站的资源分配请求；向所 述主叫终端的服务基站发送所述被叫终端的服务基站的可用资源信息，并接收 所述主叫终端返回的设备间通信的资源分配协商结果。
结合二方面、 二方面的第一种、 或第二种可能的实现方式， 在第三种可能 的实现方式中，所述被叫终端的服务基站与主叫终端的服务基站进行定时同步 协商包括：
通过基站间接口接收来自所述主叫终端的服务基站的所述主叫终端的定 时信息以及被叫终端的定时信息获知请求；依据所述主叫终端的定时信息确定 并向所述主叫终端的服务基站返回所述被叫终端的定时信息； 或者， 向无线资 源管理协调器发送所述被叫终端的定时信息，并接收所述无线资源管理协调器 返回的所述主叫终端的定时信息。
三方面， 提供了一种设备间通信的方法， 包括：
被叫终端的服务基站接收移动性管理实体发送的主叫终端的服务基站信 息；
依据所述主叫终端的服务基站信息确定主叫终端的服务基站，并与所述主 叫终端的服务基站进行资源分配协商和定时同步协商；
将资源分配协商和定时同步协商的协商结果发送给被叫终端，用于所述主 叫终端与被叫终端进行设备间通信。
结合三方面的实现方式，在第一种可能的实现方式中， 所述与所述主叫终 端的服务基站进行资源分配协商包括：
通过基站间接口向所述主叫终端的服务基站发送资源分配请求进行资源 分配协商； 或者， 向无线资源管理协调器发送资源分配请求以及被叫终端的服 务基站的资源状况信息，并接收所述无线资源管理协调器返回的执行资源分配 协商的资源分配结果。
结合三方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述 通过基站间接口向所述主叫终端的服务基站发送资源分配请求进行资源分配 协商包括：
通过基站间接口将资源分配请求发送给主叫终端的服务器基站；接收主叫 终端的服务基站返回的主叫终端的服务基站的可用资源信息，并据此确定设备 间通信的资源分配协商结果。
结合三方面、 三方面的第一种、 或第二种可能的实现方式， 在第三种可能 的实现方式中， 所述与所述主叫终端的服务基站进行定时同步协商包括： 通过基站间接口向所述主叫终端的服务基站发送所述主叫终端的定时信 息以及主叫终端的定时信息获知请求，接收所述主叫终端的服务基站返回的所 述主叫终端的定时信息； 或者， 向无线资源管理协调器发送所述被叫终端的定 时信息以及主叫终端的定时信息获知请求，并接收所述无线资源管理协调器返 回的所述主叫终端的定时信息。
四方面， 提供了一种设备间通信的方法， 包括：
主叫终端的服务基站在接收主叫终端的呼叫请求后，将所述呼叫请求转发 给移动性管理实体；使所述移动性管理实体将主叫终端的服务基站信息发送给 所述呼叫请求对应的被叫终端的服务基站，并使所述被叫终端的服务基站依据 所述主叫终端的服务基站信息确定主叫终端的服务基站；
与所述主叫终端的服务基站进行资源分配协商和定时同步协商； 将资源分配协商和定时同步协商的协商结果发送给主叫终端，用于所述主 叫终端与被叫终端进行设备间通信。
结合四方面的实现方式，在第一种可能的实现方式中， 所述与所述主叫终 端的服务基站进行资源分配协商包括：
通过基站间接口接收所述被叫终端的服务基站发送的资源分配请求后执 行资源分配协商； 或者， 向无线资源管理协调器发送主叫终端的服务基站的资 源状况信息，并接收所述无线资源管理协调器返回的执行资源分配协商的资源 分配结果。
结合四方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述 通过基站间接口接收所述被叫终端的服务基站发送的资源分配请求后执行资 源分配协商包括： 通过基站间接口接收来自所述被叫终端的服务基站的资源分配请求；向所 述被叫终端的服务基站发送所述主叫终端的服务基站的可用资源信息，并接收 所述被叫终端返回的设备间通信的资源分配协商结果。
结合四方面、 四方面的第一种、 或第二种可能的实现方式， 在第三种可能 的实现方式中， 所述与所述主叫终端的服务基站进行定时同步协商包括： 通过基站间接口接收来自所述被叫终端的服务基站的所述被叫终端的定 时信息以及主叫终端的定时信息获知请求；依据所述被叫终端的定时信息确定 并向所述被叫终端的服务基站返回所述主叫终端的定时信息； 或者， 向无线资 源管理协调器发送所述主叫终端的定时信息，并接收所述无线资源管理协调器 返回的所述被叫终端的定时信息。
五方面， 提供了一种设备间通信的方法， 包括：
接收主叫终端的服务基站转发的主叫终端的呼叫请求；
若所述呼叫请求对应的被叫终端与所述主叫终端属于同一个设备间通信 D2D协作集合，则向所述主叫终端的服务基站发送所述被叫终端的服务基站信 息，使主叫终端的服务基站与所述被叫终端的服务基站进行资源分配协商和定 时同步协商， 或者， 向所述被叫终端的服务基站发送所述主叫终端的服务基站 信息，使被叫终端的服务基站与所述主叫终端的服务基站进行资源分配协商和 定时同步协商，资源分配协商和定时同步协商的协商结果用于所述主叫终端与 被叫终端进行设备间通信。
结合五方面的实现方式，在第一种可能的实现方式中，在向所述主叫终端 的服务基站发送所述被叫终端的服务基站信息， 或者， 向所述被叫终端的服务 基站发送所述主叫终端的服务基站信息之前还包括：
确定被叫终端是否为连接态， 若否， 则寻呼被叫终端， 使被叫终端进入连 接态。
六方面， 提供了一种基站， 包括：
第一呼叫请求接收单元， 用于接收主叫终端的呼叫请求；
第一呼叫请求发送单元，用于将所述第一呼叫请求接收单元接收到的呼叫 请求转发给移动性管理实体；
第一基站信息接收单元，用于接收移动性管理实体返回的所述第一呼叫请 求发送单元发送的呼叫请求对应的被叫终端的服务基站信息；
第一基站确定单元，用于依据所述第一基站信息接收单元接收的所述被叫 终端的服务基站信息确定被叫终端的服务基站；
第一协商控制单元，用于控制与所述第一基站确定单元确定的被叫终端的 服务基站进行资源分配协商和定时同步协商；
第一结果发送单元，用于将所述第一协商控制单元进行资源分配协商和定 时同步协商的协商结果发送给主叫终端，所述协商结果用于所述主叫终端与被 叫终端进行设备间通信。
结合六方面的实现方式，在第一种可能的实现方式中， 所述第一协商控制 单元包括：
第一发送单元，用于通过基站间接口向所述被叫终端的服务基站发送资源 分配请求进行资源分配协商； 或者， 所述第一协商控制单元包括：
第二发送单元，用于向无线资源管理协调器发送资源分配请求以及主叫终 端的服务基站的资源状况信息；
第一结果接收单元，用于接收所述无线资源管理协调器返回的执行资源分 配协商的资源分配结果。
结合六方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述第一发送单元，具体用于通过基站间接口将资源分配请求发送给被叫 终端的服务器基站；使被叫终端的服务基站返回被叫终端的服务基站的可用资 源信息， 并由第一协商控制单元据此确定设备间通信的资源分配协商结果。
结合六方面、 六方面的第一种、 或第二种可能的实现方式， 在第三种可能 的实现方式中， 所述第一协商控制单元包括：
第三发送单元，用于通过基站间接口向所述被叫终端的服务基站发送所述 主叫终端的定时信息以及被叫终端的定时信息获知请求；
第一定时信接收单元，用于接收所述被叫终端的服务基站返回的所述被叫 终端的定时信息； 或者， 所述第一协商控制单元包括：
第四发送单元，用于向无线资源管理协调器发送所述主叫终端的定时信息 以及被叫终端的定时信息获知请求；
第二定时信接收单元，用于接收所述无线资源管理协调器返回的所述被叫 终端的定时信息。
七方面， 提供了一种基站， 包括：
第三协商控制单元，用于与主叫终端的服务基站进行资源分配协商和定时 同步协商； 所述被叫终端的服务基站， 由所述主叫服务基站依据接收到的来自 移动性管理实体的被叫终端的服务基站信息确定；
第三结果发送单元，用于将资源分配协商和定时同步协商的协商结果发送 给被叫终端， 用于所述主叫终端与被叫终端进行设备间通信。
结合七方面的实现方式，在第一种可能的实现方式中， 所述第三协商控制 单元包括：
第一接收单元，用于通过基站间接口接收所述主叫终端的服务基站发送的 资源分配请求执行资源分配协商； 或者， 所述第三协商控制单元包括：
第九发送单元，用于向无线资源管理协调器发送被叫终端的服务基站的资 源状况信息；
第三结果接收单元，用于接收所述无线资源管理协调器返回的执行资源分 配协商的资源分配结果。
结合七方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述第一接收单元，具体用于通过基站间接口接收来自所述主叫终端的服 务基站的资源分配请求； 所述第三协商控制单元还包括：
第九发送单元，用于向所述主叫终端的服务基站发送所述被叫终端的服务 基站的可用资源信息；
第四结果接收单元，用于接收所述主叫终端返回的设备间通信的资源分配 协商结果。
结合七方面、 七方面的第一种、 或第二种可能的实现方式， 在第三种可能 的实现方式中， 所述第三协商控制单元包括：
第二接收单元，用于通过基站间接口接收来自所述主叫终端的服务基站的 所述主叫终端的定时信息以及被叫终端的定时信息获知请求；用于依据所述主 叫终端的定时信息确定所述被叫终端的定时信息；
第四结果发送单元，用于向所述主叫终端的服务基站返回所述被叫终端的 定时信息； 或者， 所述第三协商控制单元包括： 第十发送单元， 用于向无线资源管理协调器发送所述被叫终端的定时信 息；
第五结果接收单元，用于接收所述无线资源管理协调器返回的所述主叫终 端的定时信息。
八方面， 提供了一种基站， 包括：
第二基站信息接收单元，用于接收移动性管理实体发送的主叫终端的服务 基站信息；
第二基站确定单元，用于依据所述第一基站信息接收单元接收的所述主叫 终端的服务基站信息确定主叫终端的服务基站；
第二协商控制单元，用于控制与所述第二基站确定单元确定的所述主叫终 端的服务基站进行资源分配协商和定时同步协商；
第二结果发送单元，用于将所述第二协商控制单元进行资源分配协商和定 时同步协商的协商结果发送给被叫终端，用于所述主叫终端与被叫终端进行设 备间通信。
结合八方面的实现方式，在第一种可能的实现方式中， 所述第二协商控制 单元包括：
第五发送单元，用于通过基站间接口向所述主叫终端的服务基站发送资源 分配请求进行资源分配协商； 或者， 所述第二协商控制单元包括：
第六发送单元，用于向无线资源管理协调器发送资源分配请求以及被叫终 端的服务基站的资源状况信息；
第二结果接收单元，用于接收所述无线资源管理协调器返回的执行资源分 配协商的资源分配结果。
结合八方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述第五发送单元，具体用于通过基站间接口将资源分配请求发送给主叫 终端的服务器基站；使主叫终端的服务基站返回主叫终端的服务基站的可用资 源信息， 并使所述第二协商控制单元据此确定设备间通信的资源分配协商结 果。
结合八方面、 八方面的第一种、 或第二种可能的实现方式， 在第三种可能 的实现方式中， 所述第二协商控制单元包括： 第七发送单元，用于通过基站间接口向所述主叫终端的服务基站发送所述 主叫终端的定时信息以及主叫终端的定时信息获知请求；
第三定时信息接收单元，用于接收所述主叫终端的服务基站返回的所述主 叫终端的定时信息； 或者， 所述第二协商控制单元包括：
第八发送单元，用于向无线资源管理协调器发送所述被叫终端的定时信息 以及主叫终端的定时信息获知请求；
第四定时信息接收单元，用于接收所述无线资源管理协调器返回的所述主 叫终端的定时信息。
九方面， 提供了一种基站， 包括：
第三呼叫请求接收单元， 用于接收主叫终端的呼叫请求；
第二呼叫请求发送单元，用于将所述第三呼叫请求接收单元接收到的呼叫 请求转发给移动性管理实体；使所述移动性管理实体将主叫终端的服务基站信 息发送给所述呼叫请求对应的被叫终端的服务基站，并使所述被叫终端的服务 基站依据所述主叫终端的服务基站信息确定主叫终端的服务基站；
第四协商控制单元，用于与所述主叫终端的服务基站进行资源分配协商和 定时同步协商；
第五结果发送单元，用于将资源分配协商和定时同步协商的协商结果发送 给主叫终端， 用于所述主叫终端与被叫终端进行设备间通信。
结合九方面的实现方式，在第一种可能的实现方式中， 所述第四协商控制 单元包括：
第三接收单元，用于通过基站间接口接收所述被叫终端的服务基站发送的 资源分配请求后执行资源分配协商； 或者， 所述第四协商控制单元包括： 第十一发送单元，用于向无线资源管理协调器发送主叫终端的服务基站的 资源状况信息；
第六结果接收单元，用于接收所述无线资源管理协调器返回的执行资源分 配协商的资源分配结果。
结合九方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述第三接收单元，具体用于通过基站间接口接收来自所述被叫终端的服 务基站的资源分配请求； 所述第四协商控制单元还包括： 第十二发送单元，用于向所述被叫终端的服务基站发送所述主叫终端的服 务基站的可用资源信息；
第七结果接收单元，用于接收所述被叫终端返回的设备间通信的资源分配 协商结果。
结合九方面、 九方面的第一种、 或第二种可能的实现方式， 在第三种可能 的实现方式中， 所述第四协商控制单元包括：
第四接收单元，用于通过基站间接口接收来自所述被叫终端的服务基站的 所述被叫终端的定时信息以及主叫终端的定时信息获知请求；用于所述被叫终 端的定时信息确定所述主叫终端的定时信息；
第六结果发送单元，用于向所述被叫终端的服务基站返回所述主叫终端的 定时信息； 或者， 所述第四协商控制单元包括：
第十三发送单元，用于向无线资源管理协调器发送所述主叫终端的定时信 息；
第八结果接收单元，用于接收所述无线资源管理协调器返回的所述被叫终 端的定时信息。
十方面， 提供了一种移动性管理实体， 包括：
第二呼叫请求接收单元，用于接收主叫终端的服务基站转发的主叫终端的 呼叫请求；
集合判断单元，用于判断所述第二呼叫请求接收单元接收到的呼叫请求对 应的被叫终端与所述主叫终端是否属于同一个 D2D协作集合；
基站信息发送单元，用于若集合判断单元确定所述呼叫请求对应的被叫终 端与所述主叫终端属于同一个 D2D协作集合，则向所述主叫终端的服务基站发 送所述被叫终端的服务基站信息，使主叫终端的服务基站与所述被叫终端的服 务基站进行资源分配协商和定时同步协商， 或者， 向所述被叫终端的服务基站 发送所述主叫终端的服务基站信息，使被叫终端的服务基站与所述主叫终端的 服务基站进行资源分配协商和定时同步协商，资源分配协商和定时同步协商的 协商结果用于所述主叫终端与被叫终端进行设备间通信。
结合十方面的实现方式， 在第一种可能的实现方式中， 还包括： 状态确定单元，用于在所述基站信息发送单元向所述主叫终端的服务基站 发送所述被叫终端的服务基站信息， 或者， 向所述被叫终端的服务基站发送所 述主叫终端的服务基站信息之前， 确定被叫终端是否为连接态；
寻呼控制单元，用于若所述状态确定单元确定结果为否，则寻呼被叫终端， 使被叫终端进入连接态。
十一方面， 提供了一种基站， 包括： 接收装置、 发射装置、 存储器以及处 理器；
所述处理器， 用于在所述接收装置接收到主叫终端的呼叫请求后，指示发 射装置将所述呼叫请求转发给移动性管理实体；在接收装置接收到移动性管理 实体返回的所述呼叫请求对应的被叫终端的服务基站信息后，依据所述被叫终 端的服务基站信息确定被叫终端的服务基站，并与所述被叫终端的服务基站进 行资源分配协商和定时同步协商；指示所述发射装置将资源分配协商和定时同 步协商的协商结果发送给主叫终端，所述协商结果用于所述主叫终端与被叫终 端进行设备间通信。
结合十一方面的实现方式， 在第一种可能的实现方式中，
所述处理器，具体用于指示发射装置通过基站间接口向所述被叫终端的服 务基站发送资源分配请求进行资源分配协商； 或者，指示发射装置向无线资源 管理协调器发送资源分配请求以及主叫终端的服务基站的资源状况信息，并通 过接收装置接收所述无线资源管理协调器返回的执行资源分配协商的资源分 配结果。
结合十一方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述处理器，具体用于指示发射装置通过基站间接口将资源分配请求发送 给被叫终端的服务器基站；然后通过接收装置接收被叫终端的服务基站返回的 被叫终端的服务基站的可用资源信息，并据此确定设备间通信的资源分配协商 结果。
结合十一方面、 十一方面的第一种、 或第二种可能的实现方式， 在第三种 可能的实现方式中， 所述处理器， 具体用于指示发射装置通过基站间接口向所 述被叫终端的服务基站发送所述主叫终端的定时信息以及被叫终端的定时信 息获知请求，通过接收装置接收所述被叫终端的服务基站返回的所述被叫终端 的定时信息； 或者， 用于指示发射装置向无线资源管理协调器发送所述主叫终 端的定时信息以及被叫终端的定时信息获知请求，并通过接收装置接收所述无 线资源管理协调器返回的所述被叫终端的定时信息。
十二方面， 提供了一种基站， 包括： 接收装置、 发射装置、 存储器以及处 理器；
所述处理器，用于与主叫终端的服务基站进行资源分配协商和定时同步协 商； 所述被叫终端的服务基站， 由所述主叫服务基站依据接收到的来自移动性 管理实体的所述被叫终端的服务基站信息确定；通过发射装置将资源分配协商 和定时同步协商的协商结果发送给被叫终端，用于所述主叫终端与被叫终端进 行设备间通信。
结合十二方面的实现方式， 在第一种可能的实现方式中，
所述处理器，具体用于指示发射装置通过基站间接口接收所述主叫终端的 服务基站发送的资源分配请求后执行资源分配协商； 或者，指示发射装置向无 线资源管理协调器发送被叫终端的服务基站的资源状况信息，并通过接收装置 接收所述无线资源管理协调器返回的执行资源分配协商的资源分配结果。
结合十二方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述处理器，具体用于指示发射装置通过基站间接口接收来自所述主叫终 端的服务基站的资源分配请求；向所述主叫终端的服务基站发送所述被叫终端 的服务基站的可用资源信息，并通过接收装置接收所述主叫终端返回的设备间 通信的资源分配协商结果。
结合十二方面、 十二方面的第一种、 或第二种可能的实现方式， 在第三种 可能的实现方式中， 所述处理器， 具体用于通过接收装置通过基站间接口接收 来自所述主叫终端的服务基站的所述主叫终端的定时信息以及被叫终端的定 时信息获知请求； 依据所述主叫终端的定时信息确定所述被叫终端的定时信 息； 指示发射装置向所述主叫终端的服务基站返回所述被叫终端的定时信息； 或者，指示发射装置向无线资源管理协调器发送所述被叫终端的定时信息， 并 通过接收装置接收所述无线资源管理协调器返回的所述主叫终端的定时信息。
十三方面， 提供了一种基站， 包括： 接收装置、 发射装置、 存储器以及处 理器；
所述处理器，用于通过接收装置接收到移动性管理实体发送的主叫终端的 服务基站信息后， 依据所述主叫终端的服务基站信息确定主叫终端的服务基 站， 并与所述主叫终端的服务基站进行资源分配协商和定时同步协商； 通过发 射装置将资源分配协商和定时同步协商的协商结果发送给被叫终端，用于所述 主叫终端与被叫终端进行设备间通信。
结合十三方面的实现方式， 在第一种可能的实现方式中，
所述处理器，具体用于指示发射装置通过基站间接口向所述主叫终端的服 务基站发送资源分配请求进行资源分配协商； 或者， 用于指示发射装置向无线 资源管理协调器发送资源分配请求以及被叫终端的服务基站的资源状况信息， 并通过接收装置接收所述无线资源管理协调器返回的执行资源分配协商的资 源分配结果。
结合十三方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述处理器，具体用于指示发射装置通过基站间接口将资源分配请求发送 给主叫终端的服务器基站；通过接收装置接收主叫终端的服务基站返回的主叫 终端的服务基站的可用资源信息， 并据此确定设备间通信的资源分配协商结 果。
结合十三方面、 十三方面的第一种、 或第二种可能的实现方式， 在第三种 可能的实现方式中， 所述处理器， 具体用于指示发射装置通过基站间接口向所 述主叫终端的服务基站发送所述主叫终端的定时信息以及主叫终端的定时信 息获知请求，通过接收装置接收所述主叫终端的服务基站返回的所述主叫终端 的定时信息； 或者， 用于指示发射装置向无线资源管理协调器发送所述被叫终 端的定时信息以及主叫终端的定时信息获知请求，并通过接收装置接收所述无 线资源管理协调器返回的所述主叫终端的定时信息。
十四方面， 提供了一种基站， 包括： 接收装置、 发射装置、 存储器以及处 理器；
所述处理器， 用于在通过接收装置接收到主叫终端的呼叫请求后，指示发 射装置将所述呼叫请求转发给移动性管理实体；使所述移动性管理实体将主叫 终端的服务基站信息发送给所述呼叫请求对应的被叫终端的服务基站，并使所 述被叫终端的服务基站依据所述主叫终端的服务基站信息确定主叫终端的服 务基站； 与所述主叫终端的服务基站进行资源分配协商和定时同步协商； 指示 发射装置将资源分配协商和定时同步协商的协商结果发送给主叫终端，用于所 述主叫终端与被叫终端进行设备间通信。
结合十四方面的实现方式， 在第一种可能的实现方式中，
所述处理器，具体用于通过接收装置通过基站间接口接收所述被叫终端的 服务基站发送的资源分配请求后执行资源分配协商； 或者，指示发射装置向无 线资源管理协调器发送主叫终端的服务基站的资源状况信息，并通过接收装置 接收所述无线资源管理协调器返回的执行资源分配协商的资源分配结果。
结合十四方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所述处理器，具体用于通过接收装置通过基站间接口接收来自所述被叫终 端的服务基站的资源分配请求；指示发射装置向所述被叫终端的服务基站发送 所述主叫终端的服务基站的可用资源信息，并通过接收装置接收所述被叫终端 返回的设备间通信的资源分配协商结果。
结合十四方面、 十四方面的第一种、 或第二种可能的实现方式， 在第三种 可能的实现方式中， 所述处理器， 具体用于通过接收装置通过基站间接口接收 来自所述被叫终端的服务基站的所述被叫终端的定时信息以及主叫终端的定 时信息获知请求； 依据所述被叫终端的定时信息确定所述主叫终端的定时信； 指示发射装置向所述被叫终端的服务基站返回所述主叫终端的定时信息； 或 者，指示发射装置向无线资源管理协调器发送所述主叫终端的定时信息， 并通 过接收装置接收所述无线资源管理协调器返回的所述被叫终端的定时信息。
十五方面， 提供了一种移动性管理实体， 包括： 接收装置、 发射装置、 存 储器以及处理器；
所述处理器，用于通过接收装置接收到主叫终端的服务基站转发的主叫终 端的呼叫请求后，若所述呼叫请求对应的被叫终端与所述主叫终端属于同一个 设备间通信 D2D协作集合，则指示发射装置向所述主叫终端的服务基站发送所 述被叫终端的服务基站信息，使主叫终端的服务基站与所述被叫终端的服务基 站进行资源分配协商和定时同步协商， 或者，指示发射装置向所述被叫终端的 服务基站发送所述主叫终端的服务基站信息，使被叫终端的服务基站与所述主 叫终端的服务基站进行资源分配协商和定时同步协商，资源分配协商和定时同 步协商的协商结果用于所述主叫终端与被叫终端进行设备间通信。 结合十五方面的实现方式， 在第一种可能的实现方式中，
所述处理器，还用于在指示发射装置向所述主叫终端的服务基站发送所述 被叫终端的服务基站信息， 或者，指示发射装置向所述被叫终端的服务基站发 送所述主叫终端的服务基站信息之前， 确定被叫终端是否为连接态， 若否， 则 指示发射装置寻呼被叫终端， 使被叫终端进入连接态。
十六方面， 提供了一种通信系统， 包括： 至少两个基站， 一个移动性管理 实体，所述至少两个基站中包含一个作为主叫终端的服务基站以及一个作为被 叫终端的服务基站；
作为主叫终端的服务基站是六方面中任意一项的基站，作为被叫终端的服 务基站是七方面中任意一项的基站；所述移动性管理实体为十方面中的移动性 管理实体； 或者，
作为主叫终端的服务基站是九方面中任意一项的基站，作为被叫终端的服 务基站是八方面中任意一项的基站；所述移动性管理实体为权利要求十方面中 的移动性管理实体； 或者，
作为主叫终端的服务基站是十一方面中任意一项的基站，作为被叫终端的 服务基站是十二方面中任意一项的基站；所述移动性管理实体为十五方面中的 移动性管理实体； 或者，
作为主叫终端的服务基站是十四方面中任意一项的基站，作为被叫终端的 服务基站是十三方面中任意一项的基站；所述移动性管理实体为十五方面中的 移动性管理实体。
上述技术方案中，主叫终端的服务基站通过移动性管理实体来获得被叫终 端的服务基站的信息，然后依据被叫终端的服务基站的信息来确定被叫终端的 服务基站并与被叫终端的服务基站进行相关的协商，并把协商结果发送给主叫 终端的终端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所 需要使用的附图作筒要介绍， 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，对于本领域的普通技术人员来讲，在不付出创造性劳动性的前提 可以根据这些附图获得其他的附图。
图 1为现有技术中典型 D2D组网结构示意图； 图 2A为本发明实施例方法流程示意图；
图 2B为本发明实施例方法流程示意图；
图 3A为本发明实施例方法流程示意图；
图 3B为本发明实施例方法流程示意图；
图 4为本发明实施例方法流程示意图；
图 5A为本发明实施例方法流程示意图；
图 5B为本发明实施例方法流程示意图；
图 5C为本发明实施例方法流程示意图；
图 5D为本发明实施例方法流程示意图；
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图 5H为本发明实施例方法流程示意图；
图 51为本发明实施例方法流程示意图；
图 5J为本发明实施例方法流程示意图；
图 6为本发明实施例基站结构示意图；
图 7A为本发明实施例基站结构示意图；
图 7B为本发明实施例基站结构示意图；
图 8A为本发明实施例基站结构示意图；
图 8B为本发明实施例基站结构示意图；
图 9为本发明实施例基站结构示意图；
图 10A为本发明实施例基站结构示意图；
图 10B为本发明实施例基站结构示意图；
图 11A为本发明实施例基站结构示意图；
图 11B为本发明实施例基站结构示意图；
图 12为本发明实施例移动性管理实体结构示意图; 图 13为本发明实施例移动性管理实体结构示意图; 图 14为本发明实施例基站结构示意图；
图 15A为本发明实施例基站结构示意图；
图 15B为本发明实施例基站结构示意图；
图 15C为本发明实施例基站结构示意图；
图 16A为本发明实施例基站结构示意图；
图 16B为本发明实施例基站结构示意图；
图 17为本发明实施例基站结构示意图；
图 18A为本发明实施例基站结构示意图；
图 18B为本发明实施例基站结构示意图；
图 18C为本发明实施例基站结构示意图；
图 19A为本发明实施例基站结构示意图；
图 19B为本发明实施例基站结构示意图；
图 20为本发明实施例基站结构示意图；
图 21为本发明实施例基站结构示意图；
图 22为本发明实施例基站结构示意图；
图 23为本发明实施例基站结构示意图；
图 24为本发明实施例移动性管理实体结构示意图；
图 25为本发明实施例通信系统结构示意图；
图 26为本发明实施例组网结构示意图。 具体实施方式
为了使本发明的目的、技术方案和优点更加清楚， 下面将结合附图对本发 明作进一步地详细描述， 显然， 所描述的实施例仅仅是本发明一部份实施例， 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它实施例， 都属于本发明保护的范围。
本发明实施例提供了一种设备间通信的方法，该方法在主叫终端的服务基 站上实现， 由主叫终端的服务基站发起协商， 如图 2A所示， 包括：
201A: 主叫终端的服务基站在接收主叫终端的呼叫请求后， 将上述呼叫 请求转发给移动性管理实体； 主叫终端的服务基站是给主叫终端提供服务的基站。呼叫请求可以包含被 叫终端的识別标识等信息。
202A: 接收移动性管理实体返回的上述呼叫请求对应的被叫终端的服务 基站信息；
在移动性管理实体 MME—侧， MME可能还会判断主叫终端与被叫终端 是否处于一个 D2D协作集合内。 D2D协作集合中的终端的选择方案可以是终 端间相互探测 D2D导频序列的接收信号强度是否高于一个预定门限的方式， 来选择是否成为此集合的一个终端，也可以是其他方式， 本发明实施例对此不 做限制。移动性管理实体可能还需要确定被叫终端是否处于连接状态，如不处 于连接状态， 可以通过寻呼使被叫终端进入连接状态。 MME—侧的执行过程 对于主叫终端的服务基站来说可以不必获知。
203A: 依据上述被叫终端的服务基站信息确定被叫终端的服务基站， 并 与上述被叫终端的服务基站进行资源分配协商和定时同步协商；
本发明实施例还给出了两种可选的基站间协商的具体实现方式， 具体如 下：
上述与上述被叫终端的服务基站进行资源分配协商包括：通过基站间接口 向上述被叫终端的服务基站发送资源分配请求进行资源分配协商； 或者， 向无 线资源管理协调器发送资源分配请求以及主叫终端的服务基站的资源状况信 息， 并接收上述无线资源管理协调器返回的执行资源分配协商的资源分配结 果。
更详细地，上述通过基站间接口向上述被叫终端的服务基站发送资源分配 请求进行资源分配协商包括：通过基站间接口将资源分配请求发送给被叫终端 的服务器基站；接收被叫终端的服务基站返回的被叫终端的服务基站的可用资 源信息， 并据此确定设备间通信的资源分配协商结果。
上述与上述被叫终端的服务基站进行定时同步协商包括：通过基站间接口 向上述被叫终端的服务基站发送上述主叫终端的定时信息以及被叫终端的定 时信息获知请求，接收上述被叫终端的服务基站返回的上述被叫终端的定时信 息； 或者， 向无线资源管理协调器发送上述主叫终端的定时信息以及被叫终端 的定时信息获知请求，并接收上述无线资源管理协调器返回的上述被叫终端的 定时信息。
204A: 将资源分配协商和定时同步协商的协商结果发送给主叫终端， 用 于上述主叫终端与被叫终端进行设备间通信。
本发明实施例，主叫终端的服务基站通过移动性管理实体来获得被叫终端 的服务基站的信息，然后依据被叫终端的服务基站的信息来确定被叫终端的服 务基站并与被叫终端的服务基站进行相关的协商，并把协商结果发送给主叫的 终端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
本发明实施例还提供了另一种设备间通信的方法， 对应于图 2A所示的方 案， 本实施例的方法在被叫终端的服务基站实现， 如图 2B所示， 包括：
201B: 被叫终端的服务基站与主叫终端的服务基站进行资源分配协商和 定时同步协商； 上述被叫终端的服务基站， 由上述主叫服务基站依据接收到的 来自移动性管理实体的上述被叫终端的服务基站信息确定；
在步骤 201B之前， 在移动性管理实体 MME—侧还会接收到来自主叫终 端的服务器转发的主叫终端的呼叫请求， MME可能还会判断主叫终端与被叫 终端是否处于一个 D2D协作集合内， D2D协作集合中的终端的选择方案可以 是终端间相互探测 D2D导频序列的接收信号强度是否高于一个预定门限的方 式， 来选择是否成为此集合的一个终端， 也可以是其他方式， 本发明实施例对 此不做限制。移动性管理实体可能还需要确定被叫终端是否处于连接状态， 如 不处于连接状态， 可以通过寻呼使被叫终端进入连接状态。 MME—侧的执行 过程对于被叫终端的服务基站来说可以不必获知。
本发明实施例还给出了资源分配协商和定时同步协商的具体协商方式的 举例说明， 可以如下：
上述被叫终端的服务基站与主叫终端的服务基站进行资源分配协商包括： 通过基站间接口接收上述主叫终端的服务基站发送的资源分配请求后执行资 源分配协商； 或者， 向无线资源管理协调器发送被叫终端的服务基站的资源状 况信息，并接收上述无线资源管理协调器返回的执行资源分配协商的资源分配 结果。
更详细地， 更详细地， 上述通过基站间接口接收上述主叫终端的服务基站 发送的资源分配请求后执行资源分配协商包括：通过基站间接口接收来自上述 主叫终端的服务基站的资源分配请求；向上述主叫终端的服务基站发送上述被 叫终端的服务基站的可用资源信息，并接收上述主叫终端返回的设备间通信的 资源分配协商结果。
上述被叫终端的服务基站与主叫终端的服务基站进行定时同步协商包括： 通过基站间接口接收来自上述主叫终端的服务基站的上述主叫终端的定时信 息以及被叫终端的定时信息获知请求；依据上述主叫终端的定时信息确定并向 上述主叫终端的服务基站返回上述被叫终端的定时信息； 或者， 向无线资源管 理协调器发送上述被叫终端的定时信息，并接收上述无线资源管理协调器返回 的上述主叫终端的定时信息。
202B: 将资源分配协商和定时同步协商的协商结果发送给被叫终端， 用 于上述主叫终端与被叫终端进行设备间通信。
本发明实施例，主叫终端的服务基站通过移动性管理实体来获得被叫终端 的服务基站的信息，然后依据被叫终端的服务基站的信息来确定被叫终端的服 务基站并与被叫终端的服务基站进行相关的协商，并把协商结果发送给被叫的 终端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
本发明实施例还提供了另一种设备间通信的方法，该方法在被叫终端的服 务基站实现， 由被叫终端的服务基站发起协商， 如图 3A所示， 包括：
301A: 被叫终端的服务基站接收移动性管理实体发送的主叫终端的服务 基站信息；
其中，上述主叫终端的服务基站信息为上述移动性管理实体在接收到主叫 终端的服务基站转发的上述主叫终端发起的呼叫请求后向上述被叫终端的服 务基站发送的。
在步骤 301A之前， 在移动性管理实体 MME—侧还会接收到来自主叫终 端的服务器转发的主叫终端的呼叫请求， MME可能还会判断主叫终端与被叫 终端是否处于一个 D2D协作集合内， D2D协作集合中的终端的选择方案可以 是终端间相互探测 D2D导频序列的接收信号强度是否高于一个预定门限的方 式， 来选择是否成为此集合的一个终端， 也可以是其他方式， 本发明实施例对 此不做限制。移动性管理实体可能还需要确定被叫终端是否处于连接状态， 如 不处于连接状态， 可以通过寻呼使被叫终端进入连接状态。 MME—侧的执行 过程对于被叫终端的服务基站来说可以不必获知。
302A: 依据上述主叫终端的服务基站信息确定主叫终端的服务基站， 并 与上述主叫终端的服务基站进行资源分配协商和定时同步协商；
本发明实施例还给出了两种可选的基站间协商的具体实现方式， 具体如 下：
上述与上述主叫终端的服务基站进行资源分配协商包括：通过基站间接口 向上述主叫终端的服务基站发送资源分配请求进行资源分配协商； 或者， 向无 线资源管理协调器发送资源分配请求以及被叫终端的服务基站的资源状况信 息， 并接收上述无线资源管理协调器返回的执行资源分配协商的资源分配结 果。
上述与上述主叫终端的服务基站进行定时同步协商包括：通过基站间接口 向上述主叫终端的服务基站发送上述主叫终端的定时信息以及主叫终端的定 时信息获知请求，接收上述主叫终端的服务基站返回的上述主叫终端的定时信 息； 或者， 向无线资源管理协调器发送上述被叫终端的定时信息以及主叫终端 的定时信息获知请求，并接收上述无线资源管理协调器返回的上述主叫终端的 定时信息。
303A: 将资源分配协商和定时同步协商的协商结果发送给被叫终端， 用 于上述主叫终端与被叫终端进行设备间通信。
本发明实施例，被叫终端的服务基站通过移动性管理实体来获得主叫终端 的服务基站的信息，然后依据主叫终端的服务基站的信息来确定主叫终端的服 务基站并与主叫终端的服务基站进行相关的协商，并把协商结果发送给被叫终 端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
本发明实施例还提供了另一种设备间通信的方法， 对应于图 3A所示的方 案， 本实施例的方法在主叫终端的服务基站实现， 如图 3B所示， 包括： 301B: 主叫终端的服务基站在接收主叫终端的呼叫请求后， 将上述呼叫 请求转发给移动性管理实体；使上述移动性管理实体将主叫终端的服务基站信 息发送给上述呼叫请求对应的被叫终端的服务基站，并使上述被叫终端的服务 基站依据上述主叫终端的服务基站信息确定主叫终端的服务基站；
302B: 与上述主叫终端的服务基站进行资源分配协商和定时同步协商； 本发明实施例还给出了资源分配协商和定时同步协商的具体协商方式的 举例说明， 可以如下：
上述与上述主叫终端的服务基站进行资源分配协商包括：通过基站间接口 接收上述被叫终端的服务基站发送的资源分配请求后执行资源分配协商； 或 者， 向无线资源管理协调器发送主叫终端的服务基站的资源状况信息， 并接收 上述无线资源管理协调器返回的执行资源分配协商的资源分配结果。
更详细地，上述通过基站间接口接收上述被叫终端的服务基站发送的资源 分配请求后执行资源分配协商包括：通过基站间接口接收来自上述被叫终端的 服务基站的资源分配请求；向上述被叫终端的服务基站发送上述主叫终端的服 务基站的可用资源信息，并接收上述被叫终端返回的设备间通信的资源分配协 商结果。
上述与上述主叫终端的服务基站进行定时同步协商包括：通过基站间接口 接收来自上述被叫终端的服务基站的上述被叫终端的定时信息以及主叫终端 的定时信息获知请求；依据上述被叫终端的定时信息确定并向上述被叫终端的 服务基站返回上述主叫终端的定时信息； 或者， 向无线资源管理协调器发送上 述主叫终端的定时信息，并接收上述无线资源管理协调器返回的上述被叫终端 的定时信息。
303B: 将资源分配协商和定时同步协商的协商结果发送给主叫终端， 用 于上述主叫终端与被叫终端进行设备间通信。
本发明实施例，被叫终端的服务基站通过移动性管理实体来获得主叫终端 的服务基站的信息，然后依据主叫终端的服务基站的信息来确定主叫终端的服 务基站并与主叫终端的服务基站进行相关的协商，并把协商结果发送给主叫终 端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
本发明实施例还提供了另一种设备间通信的方法，该方法在移动性管理实 体实现， 如图 4所示， 包括：
401: 接收主叫终端的服务基站转发的主叫终端的呼叫请求；
上述呼叫请求可以包含被叫终端的标识，移动性管理实体则可以据此确定 被叫终端的服务基站，以及主叫终端与被叫终端是否属于一个 D2D协作集合。 D2D协作集合中的终端的选择方案可以是终端间相互探测 D2D导频序列的接 收信号强度是否高于一个预定门限的方式， 来选择是否成为此集合的一个终 端， 也可以是其他方式， 本发明实施例对此不做限制。
402： 若上述呼叫请求对应的被叫终端与上述主叫终端属于同一个设备间 通信 D2D协作集合， 则向上述主叫终端的服务基站发送上述被叫终端的服务 基站信息，使主叫终端的服务基站与上述被叫终端的服务基站进行资源分配协 商和定时同步协商， 或者， 向上述被叫终端的服务基站发送上述主叫终端的服 务基站信息，使被叫终端的服务基站与上述主叫终端的服务基站进行资源分配 协商和定时同步协商，资源分配协商和定时同步协商的协商结果用于上述主叫 终端与被叫终端进行设备间通信。
本发明实施例，基站可以通过移动性管理实体来获得其他基站的信息， 然 后可以依据上述其他基站的信息来确定基站并与该基站进行相关的协商，这样 终端则可以通过该终端的服务基站获得协商结果，这样可以实现异基站下的主 叫终端与被叫终端间的 D2D通信。
进一步地，在向上述主叫终端的服务基站发送上述被叫终端的服务基站信 息， 或者， 向上述被叫终端的服务基站发送上述主叫终端的服务基站信息之前 还包括： 确定被叫终端是否为连接态， 若否， 则寻呼被叫终端， 使被叫终端进 入连接态， 若是， 则无需寻呼被叫终端。
以下实施例将给出更为详细的举例说明，在举例说明中将以通信系统中各 设备间信息交互的形式来说明， 这样能够更清楚设备之间的消息收发状况。在 举例中主要以主叫终端的服务基站发起协商为例，以被叫终端的服务基站发起 协商的实现方式与之类似， 在具体介绍中进行筒要说明不再赘述。
支定有两个终端， 分別为主叫终端和被叫终端； 并^ 定这两个终端在一个 D2D协作集合内； 这个 D2D协作集合中终端的选择方法可以是相互探测 D2D 导频序列的接收信号强度是否高于一个预定门限来选择是否成为该 D2D协作 集合的一个终端， 也可以是其他方式， 本发明实施例对此不做限制。 具体流程 请参阅图 5A, 包括：
501 A: 主叫终端向主叫终端的服务基站发送呼叫请求；
502A: 主叫终端的服务基站转发呼叫请求给 MME;
503A: MME查看当前主叫终端和被叫终端是否在一个 D2D协作集合内， 若不是，则将主叫终端和被叫终端的服务基站作为中转设备建立主叫终端与被 叫终端之间的通信链路； 若是， 则跳至 504A;
504A:如果被叫终端不是处于连接态，例如处于空闲态（IDLE态）， MME 先寻呼（paging )这个被叫终端； 被叫终端接收到寻呼信号之后就进入连接态 ( CONNECTED态）；
505A: MME向主叫终端的服务基站反馈被叫终端的服务基站的信息； 例如：被叫终端的服务基站信息可以是被叫终端的服务基站的基站标识等 信息。 具体的协商过程可以参考步骤 506A以及后续关于步骤 506A的实现说 明。
506A: 主叫终端的服务基站依据被叫终端的服务基站的信息确定被叫基 站，然后主叫终端的服务基站与被叫终端的服务基站进行资源分配和定时同步 的协商， 得到协商结果；
可以理解的是这里的协商结果应包含资源分配的协商结果和定时同步的 协商结果。 后续实施例将对该步骤的具体实现作更详细的说明。
507A: 主叫终端的服务基站为主叫终端进行资源分配和定时同步。 被叫 终端的服务基站为被叫终端进行资源分配和定时同步。
508A: 异基站下的主叫终端和被叫终端之间进行 D2D通信。
以上图 5A对应的流程是主叫终端的服务基站发起协商的流程， 若采用被 叫终端的服务基站来发起协商流程， 则请参阅图 5B所示： 假定有两个终端， 分別为主叫终端和被叫终端； 并假定这两个终端在一个 D2D协作集合内； 这 个 D2D协作集合中终端的选择方法可以是相互探测 D2D导频序列的接收信号 强度是否高于一个预定门限来选择是否成为该 D2D协作集合的一个终端， 也 可以是其他方式， 本发明实施例对此不做限制。 具体流程请参阅图 5B, 包括： 501B: 主叫终端向主叫终端的服务基站发送呼叫请求；
502B: 主叫终端的服务基站转发呼叫请求给 MME;
503B: MME查看当前主叫终端和被叫终端是否在一个 D2D协作集合内， 若不是，则将主叫终端和被叫终端的服务基站作为中转设备建立主叫终端与被 叫终端之间的通信链路； 若是， 则跳至 504B;
504B:如果被叫终端不是处于连接态，例如处于空闲态（IDLE态）， MME 先寻呼（paging )这个被叫终端； 被叫终端接收到寻呼信号之后就进入连接态 ( CONNECTED态）；
505B : MME向被叫终端的服务基站反馈主叫终端的服务基站的信息； 例如：主叫终端的服务基站信息可以是主叫终端的服务基站的基站标识等 信息。 具体的协商过程可以参考步骤 506B以及后续关于步骤 506B的实现说 明。
506B : 被叫终端的服务基站依据主叫终端的服务基站的信息确定主叫基 站，然后被叫终端的服务基站与主叫终端的服务基站进行资源分配和定时同步 的协商， 得到协商结果；
可以理解的是这里的协商结果应包含资源分配的协商结果和定时同步的 协商结果。 后续实施例将对该步骤的具体实现作更详细的说明。
507B : 主叫终端的服务基站为主叫终端进行资源分配和定时同步。 被叫 终端的服务基站为被叫终端进行资源分配和定时同步。
508B : 异基站下的主叫终端和被叫终端之间进行 D2D通信。
本发明实施例还给出了图 5A和图 5B中， 步骤 506A和 506B的协商步骤 的具体实现举例， 其中无线资源分配的交互两种方案举例， 定时同步信息的交 互两种方案举例， 步骤 506A的协商步骤具体可以如下：
无线资源分配的交互方案一， 采用基站间的接口进行协商， 请参阅图 5C, 包括：
5071C: 主叫终端的服务基站通过基站间的接口发送资源分配请求给被叫 终端的服务基站；
这里资源分配请求的信令可以承载在 X2口上发送。
5072C: 被叫终端的服务基站根据 5071C中的资源分配请求将该被叫终端 的服务基站的可用资源信息反馈给主叫终端的服务基站；
这里反馈的信令也可以承载在 X2口上发送。
5073C: 主叫终端的服务基站基于被叫终端的服务基站的可用资源信息反 馈， 决定 D2D通信的无线资源分配方案， 并将此方案发送给被叫终端的服务 基站。 这里无线资源分配方案的信令也可以承载在 X2口上发送。
5074C: 主叫终端的服务基站发送确认指示给被叫终端的服务基站。 这里 确认指示的信令可以承载在 X2口上发送。
本发明实施例还给出了图 5B中， 506B的协商步骤的具体实现举例，其中 无线资源分配的交互两种方案举例， 定时同步信息的交互两种方案举例， 步骤 506B的协商步骤具体可以如下：
无线资源分配的交互方案一， 采用基站间的接口进行协商，请参阅图 5D , 包括：
5071D: 被叫终端的服务基站通过基站间的接口发送资源分配请求给主叫 终端的服务基站； 这里资源分配请求的信令可以承载在 X2口上发送。
5072D:主叫终端的服务基站根据 5071D中的资源分配请求将该主叫终端 的服务基站的可用资源信息反馈给被叫终端的服务基站；这里反馈的信令也可 以承载在 X2口上发送。
5073D: 被叫终端的服务基站基于主叫终端的服务基站的可用资源信息反 馈， 决定 D2D通信的无线资源分配方案， 并将此方案发送给主叫终端的服务 基站。 这里无线资源分配方案的信令也可以承载在 X2口上发送。
5074D: 主叫终端的服务基站发送确认指示给主叫终端的服务基站。 这里 确认指示的信令可以承载在 X2口上发送。
无线资源分配的交互方案二， 采用 RRM eCoordinator ( Radio Resource Management eCoordinator, 无线资源管理协调器） 来协助协商， 对应于图 5C 由主叫终端的服务基站发起协商流程， 如图 5E所示， 包括：
5071E: 主叫终端的服务基站发送资源分配请求给 RRM协调器。
在本步骤中，还可以将主叫终端的服务基站的无线资源的使用情况承载在 上述资源分配请求中。 无线资源的使用情况不承载在本步骤的资源分配请求 中， 而是在 5072E中进行无线资源使用情况的交互也可以， 如图 5E中虚线箭 头所示。 本发明实施例对此不予限定。
5072E: RRM 协调器与被叫终端的服务基站进行无线资源使用情况的交 互；
其中， RRM协调器与被叫终端的服务基站进行无线资源使用情况的交互 具体的交互过程至少包括以下两种： （ 1 ) RRM协调器请求被叫终端的服务基 站发送无线资源使用情况，然后被叫终端的服务基站反馈被叫终端的服务基站 的无线资源的使用情况给 RRM协调器； （2 )被叫终端的服务基站主动上报无 线资源使用情况给 RRM协调器。
若在 5071E 中主叫终端的服务基站未发送无线资源的使用情况， 那么在 5072E中， RRM协调器与主叫终端的服务基站进行无线资源使用情况的交互 过程可以如下： RRM协调器请求主叫终端的服务基站发送无线资源使用情况， 然后主叫终端的服务基站反馈主叫终端的服务基站的无线资源的使用情况给 RRM协调器。
5073E: RRM协调器依据主叫终端和被叫终端双方的服务基站无线资源使 用情况决定资源分配方案，然后向主叫终端和被叫终端的服务基站分別发送资 源分配的方案。
对应于图 5D由主叫终端的服务基站发起协商流程， 如图 5F所示， 包括： 5071F: 被叫终端的服务基站发送资源分配请求给 RRM协调器。
在本步骤中，还可以将被叫终端的服务基站的无线资源的使用情况承载在 上述资源分配请求中。 无线资源的使用情况不承载在本步骤的资源分配请求 中， 而是在 5072F中进行无线资源使用情况的交互也可以， 如图 5F中虚线箭 头所示。 本发明实施例对此不予限定。
5072F: RRM 协调器与主叫终端的服务基站进行无线资源使用情况的交 互；
其中， RRM协调器与主叫终端的服务基站进行无线资源使用情况的交互 具体的交互过程至少包括以下两种： （ 1 ) RRM协调器请求主叫终端的服务基 站发送无线资源使用情况，然后主叫终端的服务基站反馈主叫终端的服务基站 的无线资源的使用情况给 RRM协调器； （2 )主叫终端的服务基站主动上报无 线资源使用情况给 RRM协调器。
若在 5071F 中被叫终端的服务基站未发送无线资源的使用情况， 那么在 5072F中， RRM协调器与被叫终端的服务基站进行无线资源使用情况的交互 过程可以如下： RRM协调器请求被叫终端的服务基站发送无线资源使用情况， 然后被叫终端的服务基站反馈被叫终端的服务基站的无线资源的使用情况给 RRM协调器。
5073F: RRM协调器依据主叫终端和被叫终端双方的服务基站无线资源使 用情况决定资源分配方案，然后向主叫终端和被叫终端的服务基站分別发送资 源分配的方案。
定时同步信息的交互方案一， 也可以有两种类型， 具体如下：
定时同步信息的交互方案一， 采用基站间的接口进行协商， 若由主叫终端 的服务基站发起协商， 那么请参阅图 5G, 包括：
5071G: 主叫终端的服务基站发送主叫终端的定时信息给被叫终端的服务 基站； 定时信息是用于确定终端的信号接收和 /或发送时刻的信息。 上述承载 有主叫终端的定时信息的信令， 还可以承载被叫终端的定时信息的获知请求。
这里定时信息以及获知请求的信令均可以承载在 X2口上发送。 另外， 上 述被叫终端的定时信息的获知请求也可以采用单独的信令发送，而不与主叫终 端的定时信息共用信令。 定时信息以及获知请求具体采用何种方式发送，对此 本发明实施例不予限定。
5072G: 被叫终端的服务基站在收到的关于被叫终端定时信息的获知请求 后，发送被叫终端的定时信息给主叫终端的服务基站。这里定时信息的信令可 以承载在 X2口上发送。
若由被叫终端的服务基站发起协商， 那么请参阅图 5H, 包括：
5071H: 被叫终端的服务基站发送被叫终端的定时信息给主叫终端的服务 基站； 定时信息是用于确定终端的信号接收和 /或发送时刻的信息。 上述承载 有被叫终端的定时信息的信令， 还可以承载主叫终端的定时信息的获知请求。
这里定时信息以及获知请求的信令均可以承载在 X2口上发送。 另外， 上 述主叫终端的定时信息的获知请求也可以采用单独的信令发送，而不与被叫终 端的定时信息共用信令。 定时信息以及获知请求具体采用何种方式发送，对此 本发明实施例不予限定。
5072 H:主叫终端的服务基站在收到的关于被叫终端定时信息的获知请求 后，发送主叫终端的定时信息给被叫终端的服务基站。这里定时信息的信令可 以承载在 X2口上发送。
定时同步信息的交互方案二， 采用 RRM协调器来协助协商， 若由主叫终 端的服务基站发起协商， 那么如图 51所示， 包括：
50711:主叫终端的服务基站向 RRM协调器发送请求获知被叫终端的定时 信息的请求，在这条请求获知被叫终端的定时信息的请求的信令中可以包含主 叫终端的定时信息；
50721: RRM协调器与被叫终端的服务基站进行交互；
RRM协调器与被叫终端的服务基站进行交互的过程可以包含如下几个方 面： （ 1 )将主叫终端定时信息发送给被叫终端的服务基站， （ 2 )请求被叫终端 的服务基站反馈被叫终端的定时信息，（ 3 )被叫终端的服务基站发送被叫终端 的定时信息给 RRM协调器；
50731: RRM协调器转发被叫终端的定时信息给主叫终端的服务基站。 若由被叫终端的服务基站发起协商， 那么如图 5J所示， 包括：
5071J:被叫终端的服务基站向 RRM协调器发送请求获知主叫终端的定时 信息的请求，在这条请求获知主叫终端的定时信息的请求的信令中可以包含被 叫终端的定时信息；
5072J: RRM协调器与主叫终端的服务基站进行交互；
RRM协调器与主叫终端的服务基站进行交互的过程可以包含如下几个方 面： （ 1 )将被叫终端定时信息发送给主叫终端的服务基站， （ 2 )请求主叫终端 的服务基站反馈主叫终端的定时信息，（ 3 )主叫终端的服务基站发送主叫终端 的定时信息给 RRM协调器；
5073J: RRM协调器转发主叫终端的定时信息给被叫终端的服务基站。 另， 需要说明的是， 资源分配协商和定时同步协商两者并不存在执行的先 后次序； 两者可以分別独立协商，也可以将资源分配协商和定时同步协商所要 发送的各种信息承载在一起进行发送，以上实施例中采用独立的流程进行说明 仅是为了使资源分配协商和定时同步协商两者的流程更明晰。
更具体的， 将各种信息承载在一起进行发送的情况， 可以参考前述图 5C~ 图 5J, 例如： 5071C与 5071G、 5072G与 5072C、 5071D与 5071H、 5072H与 5072D、 5071E与 50711、 5072E与 50721、 5073E与 50731、 5071F与 5071J、
5072F与 5072J、 5073F与 5073J均可以采用承载在一起发送。 承载在一起发 送的情况的附图本发明实施例不再赘述。
本发明实施例还提供了一种基站， 如图 6所示， 包括：
第一呼叫请求接收单元 601 , 用于接收主叫终端的呼叫请求； 第一呼叫请求发送单元 602, 用于将上述第一呼叫请求接收单元 601接收 到的呼叫请求转发给移动性管理实体；
第一基站信息接收单元 603 , 用于接收移动性管理实体返回的上述第一呼 叫请求发送单元 602发送的呼叫请求对应的被叫终端的服务基站信息；
第一基站确定单元 604, 用于依据上述第一基站信息接收单元 603接收的 上述被叫终端的服务基站信息确定被叫终端的服务基站；
第一协商控制单元 605 , 用于控制与上述第一基站确定单元 604确定的被 叫终端的服务基站进行资源分配协商和定时同步协商；
第一结果发送单元 606, 用于将上述第一协商控制单元 605进行资源分配 协商和定时同步协商的协商结果发送给主叫终端，上述协商结果用于上述主叫 终端与被叫终端进行设备间通信。
本发明实施例，主叫终端的服务基站通过移动性管理实体来获得被叫终端 的服务基站的信息，然后依据被叫终端的服务基站的信息来确定被叫终端的服 务基站并与被叫终端的服务基站进行相关的协商，并把协商结果发送给主叫的 终端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
可选地， 如图 7A所示， 上述第一协商控制单元 605包括：
第一发送单元 701 , 用于通过基站间接口向上述被叫终端的服务基站发送 资源分配请求进行资源分配协商； 或者， 如图 7B所示， 上述第一协商控制单 元 605包括：
第二发送单元 702, 用于向无线资源管理协调器发送资源分配请求以及主 叫终端的服务基站的资源状况信息；
第一结果接收单元 703 , 用于接收上述无线资源管理协调器返回的执行资 源分配协商的资源分配结果。
更具体地， 图 7A中， 上述第一发送单元 701 , 具体用于通过基站间接口 将资源分配请求发送给被叫终端的服务器基站；使被叫终端的服务基站返回被 叫终端的服务基站的可用资源信息，并由第一协商控制单元 605据此确定设备 间通信的资源分配协商结果。
可选地， 如图 8A所示， 上述第一协商控制单元 605包括：
第三发送单元 801 , 用于通过基站间接口向上述被叫终端的服务基站发送 上述主叫终端的定时信息以及被叫终端的定时信息获知请求；
第一定时信接收单元 802, 用于接收上述被叫终端的服务基站返回的上述 被叫终端的定时信息； 或者，如图 8B所示， 上述第一协商控制单元 605包括： 第四发送单元 803 , 用于向无线资源管理协调器发送上述主叫终端的定时 信息以及被叫终端的定时信息获知请求；
第二定时信接收单元 804, 用于接收上述无线资源管理协调器返回的上述 被叫终端的定时信息。
本发明实施例还提供了另一种基站， 如图 9所示， 包括：
第二基站信息接收单元 901 , 用于接收移动性管理实体发送的主叫终端的 服务基站信息；
第二基站确定单元 902, 用于依据上述第一基站信息接收单元 603接收的 上述主叫终端的服务基站信息确定主叫终端的服务基站；
第二协商控制单元 903 , 用于控制与上述第二基站确定单元 902确定的上 述主叫终端的服务基站进行资源分配协商和定时同步协商；
第二结果发送单元 904, 用于将上述第二协商控制单元 903进行资源分配 协商和定时同步协商的协商结果发送给被叫终端，用于上述主叫终端与被叫终 端进行设备间通信。
本发明实施例，被叫终端的服务基站通过移动性管理实体来获得主叫终端 的服务基站的信息，然后依据主叫终端的服务基站的信息来确定主叫终端的服 务基站并与主叫终端的服务基站进行相关的协商，并把协商结果发送给被叫终 端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
可选地， 如图 10A所示， 上述第二协商控制单元 903包括：
第五发送单元 1001 , 用于通过基站间接口向上述主叫终端的服务基站发 送资源分配请求进行资源分配协商； 或者， 如图 10B 所示， 上述第二协商控 制单元 903包括：
第六发送单元 1002, 用于向无线资源管理协调器发送资源分配请求以及 被叫终端的服务基站的资源状况信息；
第二结果接收单元 1003 , 用于接收上述无线资源管理协调器返回的执行 资源分配协商的资源分配结果。 更具体地， 图 10A中， 上述第五发送单元 1001 , 具体用于通过基站间接 口将资源分配请求发送给主叫终端的服务器基站；使主叫终端的服务基站返回 主叫终端的服务基站的可用资源信息，并使上述第二协商控制单元 903据此确 定设备间通信的资源分配协商结果。
可选地， 如图 11A所示， 上述第二协商控制单元 903包括：
第七发送单元 1101 , 用于通过基站间接口向上述主叫终端的服务基站发 送上述主叫终端的定时信息以及主叫终端的定时信息获知请求；
第三定时信息接收单元 1102, 用于接收上述主叫终端的服务基站返回的 上述主叫终端的定时信息； 或者， 如图 11B所示， 上述第二协商控制单元 903 包括：
第八发送单元 1103, 用于向无线资源管理协调器发送上述被叫终端的定 时信息以及主叫终端的定时信息获知请求；
第四定时信息接收单元 1104, 用于接收上述无线资源管理协调器返回的 上述主叫终端的定时信息。
本发明实施例还提供了一种移动性管理实体， 如图 12所示， 包括： 第二呼叫请求接收单元 1201 , 用于接收主叫终端的服务基站转发的主叫 终端的呼叫请求；
集合判断单元 1202, 用于判断上述第二呼叫请求接收单元 1201接收到的 呼叫请求对应的被叫终端与上述主叫终端是否属于同一个 D2D协作集合； 基站信息发送单元 1203, 用于若集合判断单元 1202确定上述呼叫请求对 应的被叫终端与上述主叫终端属于同一个 D2D协作集合， 则向上述主叫终端 的服务基站发送上述被叫终端的服务基站信息，使主叫终端的服务基站与上述 被叫终端的服务基站进行资源分配协商和定时同步协商， 或者， 向上述被叫终 端的服务基站发送上述主叫终端的服务基站信息，使被叫终端的服务基站与上 述主叫终端的服务基站进行资源分配协商和定时同步协商，资源分配协商和定 时同步协商的协商结果用于上述主叫终端与被叫终端进行设备间通信。
本发明实施例，基站可以通过移动性管理实体来获得其他基站的信息， 然 后可以依据上述其他基站的信息来确定基站并与该基站进行相关的协商，这样 终端则可以通过该终端的服务基站获得协商结果，这样可以实现异基站下的主 叫终端与被叫终端间的 D2D通信。
进一步地， 如图 13所示， 上述移动性管理实体还包括：
状态确定单元 1301 , 用于在上述基站信息发送单元 1203向上述主叫终端 的服务基站发送上述被叫终端的服务基站信息， 或者， 向上述被叫终端的服务 基站发送上述主叫终端的服务基站信息之前， 确定被叫终端是否为连接态； 寻呼控制单元 1302, 用于若上述状态确定单元 1301确定结果为否， 则寻 呼被叫终端， 使被叫终端进入连接态。 如果是连接态， 那么可以不必执行寻呼 的步骤， 直接向上述主叫终端的服务基站发送上述被叫终端的服务基站信息， 或者， 向上述被叫终端的服务基站发送上述主叫终端的服务基站信息。
对应于图 6所示的基站， 本发明实施例还提供了另一种基站， 如图 14所 示， 包括：
第三协商控制单元 1401 , 用于与主叫终端的服务基站进行资源分配协商 和定时同步协商； 上述被叫终端的服务基站， 由上述主叫服务基站依据接收到 的来自移动性管理实体的被叫终端的服务基站信息确定；
第三结果发送单元 1402, 用于将资源分配协商和定时同步协商的协商结 果发送给被叫终端， 用于上述主叫终端与被叫终端进行设备间通信。
本发明实施例，主叫终端的服务基站通过移动性管理实体来获得被叫终端 的服务基站的信息，然后依据被叫终端的服务基站的信息来确定被叫终端的服 务基站并与被叫终端的服务基站进行相关的协商，并把协商结果发送给被叫的 终端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
可选地， 如图 15A所示， 上述第三协商控制单元 1401包括：
第一接收单元 1501 , 用于通过基站间接口接收上述主叫终端的服务基站 发送的资源分配请求执行资源分配协商； 或者， 上述第三协商控制单元 1401 包括：
第九发送单元 1502, 用于向无线资源管理协调器发送被叫终端的服务基 站的资源状况信息；
第三结果接收单元 1503, 用于接收上述无线资源管理协调器返回的执行 资源分配协商的资源分配结果。
更具体地， 如图 15C所示， 上述第一接收单元 1501 , 具体用于通过基站 间接口接收来自上述主叫终端的服务基站的资源分配请求；上述第三协商控制 单元 1401还包括：
第九发送单元 1504, 用于向上述主叫终端的服务基站发送上述被叫终端 的服务基站的可用资源信息；
第四结果接收单元 1505, 用于接收上述主叫终端返回的设备间通信的资 源分配协商结果。
可选地， 如图 16A所示， 上述第三协商控制单元 1401包括：
第二接收单元 1601 , 用于通过基站间接口接收来自上述主叫终端的服务 基站的上述主叫终端的定时信息以及被叫终端的定时信息获知请求；用于依据 上述主叫终端的定时信息确定上述被叫终端的定时信息；
第四结果发送单元 1602, 用于向上述主叫终端的服务基站返回上述被叫 终端的定时信息； 或者， 如图 16B所示， 上述第三协商控制单元 1401包括： 第十发送单元 1603 , 用于向无线资源管理协调器发送上述被叫终端的定 时信息；
第五结果接收单元 1604, 用于接收上述无线资源管理协调器返回的上述 主叫终端的定时信息。
对应于图 9所示的基站， 本发明实施例还提供了另一种基站， 如图 17所 示， 包括：
第三呼叫请求接收单元 1701 , 用于接收主叫终端的呼叫请求；
第二呼叫请求发送单元 1702, 用于将上述第三呼叫请求接收单元 1701接 收到的呼叫请求转发给移动性管理实体；使上述移动性管理实体将主叫终端的 服务基站信息发送给上述呼叫请求对应的被叫终端的服务基站，并使上述被叫 终端的服务基站依据上述主叫终端的服务基站信息确定主叫终端的服务基站； 第四协商控制单元 1703, 用于与上述主叫终端的服务基站进行资源分配 协商和定时同步协商；
第五结果发送单元 1704, 用于将资源分配协商和定时同步协商的协商结 果发送给主叫终端， 用于上述主叫终端与被叫终端进行设备间通信。
可选地， 如图 18A所示， 上述第四协商控制单元 1703包括：
第三接收单元 1801 , 用于通过基站间接口接收上述被叫终端的服务基站 发送的资源分配请求后执行资源分配协商； 或者， 如图 18B 所示， 上述第四 协商控制单元 1703包括：
第十一发送单元 1802, 用于向无线资源管理协调器发送主叫终端的服务 基站的资源状况信息；
第六结果接收单元 1803 , 用于接收上述无线资源管理协调器返回的执行 资源分配协商的资源分配结果。
更具体地， 如图 18C所示， 上述第三接收单元 1803 , 具体用于通过基站 间接口接收来自上述被叫终端的服务基站的资源分配请求；上述第四协商控制 单元 1703还包括：
第十二发送单元 1804, 用于向上述被叫终端的服务基站发送上述主叫终 端的服务基站的可用资源信息；
第七结果接收单元 1805 , 用于接收上述被叫终端返回的设备间通信的资 源分配协商结果。
可选地， 如图 19A所示， 上述第四协商控制单元 1703包括：
第四接收单元 1901 , 用于通过基站间接口接收来自上述被叫终端的服务 基站的上述被叫终端的定时信息以及主叫终端的定时信息获知请求；用于上述 被叫终端的定时信息确定上述主叫终端的定时信息；
第六结果发送单元 1902, 用于向上述被叫终端的服务基站返回上述主叫 终端的定时信息； 或者， 如图 19B所示， 上述第四协商控制单元 1703包括： 第十三发送单元 1903 , 用于向无线资源管理协调器发送上述主叫终端的 定时信息；
第八结果接收单元 1904, 用于接收上述无线资源管理协调器返回的上述 被叫终端的定时信息。
本发明实施例，被叫终端的服务基站通过移动性管理实体来获得主叫终端 的服务基站的信息，然后依据主叫终端的服务基站的信息来确定主叫终端的服 务基站并与主叫终端的服务基站进行相关的协商，并把协商结果发送给主叫终 端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
本发明实施例还提供了另一种基站，如图 20所示， 包括：接收装置 2001、 发射装置 2002、 存储器 2003以及处理器 2004; 其中， 上述处理器 2004, 用于在上述接收装置 2001接收到主叫终端的呼 叫请求后， 指示发射装置 2002将上述呼叫请求转发给移动性管理实体； 在接 收装置 2001接收到移动性管理实体返回的上述呼叫请求对应的被叫终端的服 务基站信息后， 依据上述被叫终端的服务基站信息确定被叫终端的服务基站， 并与上述被叫终端的服务基站进行资源分配协商和定时同步协商；指示上述发 射装置 2002将资源分配协商和定时同步协商的协商结果发送给主叫终端， 上 述协商结果用于上述主叫终端与被叫终端进行设备间通信。
本发明实施例，主叫终端的服务基站通过移动性管理实体来获得被叫终端 的服务基站的信息，然后依据被叫终端的服务基站的信息来确定被叫终端的服 务基站并与被叫终端的服务基站进行相关的协商，并把协商结果发送给主叫的 终端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
可选地， 上述处理器 2004, 具体用于指示发射装置 2002通过基站间接口 向上述被叫终端的服务基站发送资源分配请求进行资源分配协商； 或者，指示 发射装置 2002向无线资源管理协调器发送资源分配请求以及主叫终端的服务 基站的资源状况信息， 并通过接收装置 2001接收上述无线资源管理协调器返 回的执行资源分配协商的资源分配结果。
可选地， 上述处理器 2004, 具体用于指示发射装置 2002通过基站间接口 将资源分配请求发送给被叫终端的服务器基站； 然后通过接收装置 2001接收 被叫终端的服务基站返回的被叫终端的服务基站的可用资源信息，并据此确定 设备间通信的资源分配协商结果。
可选地， 上述处理器 2004, 具体用于指示发射装置 2002通过基站间接口 向上述被叫终端的服务基站发送上述主叫终端的定时信息以及被叫终端的定 时信息获知请求， 通过接收装置 2001接收上述被叫终端的服务基站返回的上 述被叫终端的定时信息； 或者， 用于指示发射装置 2002向无线资源管理协调 器发送上述主叫终端的定时信息以及被叫终端的定时信息获知请求，并通过接 收装置 2001接收上述无线资源管理协调器返回的上述被叫终端的定时信息。
本发明实施例还提供了另一种基站，如图 21所示， 包括：接收装置 2101、 发射装置 2102、 存储器 2103以及处理器 2104;
其中， 上述处理器 2104, 用于与主叫终端的服务基站进行资源分配协商 和定时同步协商； 上述被叫终端的服务基站， 由上述主叫服务基站依据接收到 的来自移动性管理实体的上述被叫终端的服务基站信息确定； 通过发射装置 2102 将资源分配协商和定时同步协商的协商结果发送给被叫终端， 用于上述 主叫终端与被叫终端进行设备间通信。
本发明实施例，主叫终端的服务基站通过移动性管理实体来获得被叫终端 的服务基站的信息，然后依据被叫终端的服务基站的信息来确定被叫终端的服 务基站并与被叫终端的服务基站进行相关的协商，并把协商结果发送给主叫的 终端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
可选地， 上述处理器 2104, 具体用于指示发射装置 2102通过基站间接口 接收上述主叫终端的服务基站发送的资源分配请求后执行资源分配协商； 或 者， 指示发射装置 2102向无线资源管理协调器发送被叫终端的服务基站的资 源状况信息， 并通过接收装置 2101接收上述无线资源管理协调器返回的执行 资源分配协商的资源分配结果。
可选地， 上述处理器 2104, 具体用于指示发射装置 2102通过基站间接口 接收来自上述主叫终端的服务基站的资源分配请求；向上述主叫终端的服务基 站发送上述被叫终端的服务基站的可用资源信息， 并通过接收装置 2101接收 上述主叫终端返回的设备间通信的资源分配协商结果。
可选地， 上述处理器 2104, 具体用于通过接收装置 2101通过基站间接口 接收来自上述主叫终端的服务基站的上述主叫终端的定时信息以及被叫终端 的定时信息获知请求；依据上述主叫终端的定时信息确定上述被叫终端的定时 信息； 指示发射装置 2102向上述主叫终端的服务基站返回上述被叫终端的定 时信息； 或者， 指示发射装置 2102向无线资源管理协调器发送上述被叫终端 的定时信息， 并通过接收装置 2101接收上述无线资源管理协调器返回的上述 主叫终端的定时信息。
本发明实施例还提供了另一种基站，如图 22所示， 包括：接收装置 2201、 发射装置 2202、 存储器 2203以及处理器 2204;
其中， 上述处理器 2204, 用于通过接收装置 2201接收到移动性管理实体 发送的主叫终端的服务基站信息后，依据上述主叫终端的服务基站信息确定主 叫终端的服务基站，并与上述主叫终端的服务基站进行资源分配协商和定时同 步协商； 通过发射装置 2202将资源分配协商和定时同步协商的协商结果发送 给被叫终端， 用于上述主叫终端与被叫终端进行设备间通信。
本发明实施例，被叫终端的服务基站通过移动性管理实体来获得主叫终端 的服务基站的信息，然后依据主叫终端的服务基站的信息来确定主叫终端的服 务基站并与主叫终端的服务基站进行相关的协商，并把协商结果发送给主叫终 端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
可选地， 上述处理器 2204, 具体用于指示发射装置 2202通过基站间接口 向上述主叫终端的服务基站发送资源分配请求进行资源分配协商； 或者， 用于 指示发射装置 2202向无线资源管理协调器发送资源分配请求以及被叫终端的 服务基站的资源状况信息， 并通过接收装置 2201接收上述无线资源管理协调 器返回的执行资源分配协商的资源分配结果。
可选地， 上述处理器 2204, 具体用于指示发射装置 2202通过基站间接口 将资源分配请求发送给主叫终端的服务器基站； 通过接收装置 2201接收主叫 终端的服务基站返回的主叫终端的服务基站的可用资源信息，并据此确定设备 间通信的资源分配协商结果。
可选地， 上述处理器 2204, 具体用于指示发射装置 2202通过基站间接口 向上述主叫终端的服务基站发送上述主叫终端的定时信息以及主叫终端的定 时信息获知请求， 通过接收装置 2201接收上述主叫终端的服务基站返回的上 述主叫终端的定时信息； 或者， 用于指示发射装置 2202向无线资源管理协调 器发送上述被叫终端的定时信息以及主叫终端的定时信息获知请求，并通过接 收装置 2201接收上述无线资源管理协调器返回的上述主叫终端的定时信息。
本发明实施例还提供了另一种基站，如图 23所示， 包括：接收装置 2301、 发射装置 2302、 存储器 2303以及处理器 2304;
其中， 上述处理器 2304, 用于在通过接收装置 2301接收到主叫终端的呼 叫请求后， 指示发射装置 2302将上述呼叫请求转发给移动性管理实体； 使上 述移动性管理实体将主叫终端的服务基站信息发送给上述呼叫请求对应的被 叫终端的服务基站，并使上述被叫终端的服务基站依据上述主叫终端的服务基 站信息确定主叫终端的服务基站；与上述主叫终端的服务基站进行资源分配协 商和定时同步协商； 指示发射装置 2302将资源分配协商和定时同步协商的协 商结果发送给主叫终端， 用于上述主叫终端与被叫终端进行设备间通信。 本发明实施例，被叫终端的服务基站通过移动性管理实体来获得主叫终端 的服务基站的信息，然后依据主叫终端的服务基站的信息来确定主叫终端的服 务基站并与主叫终端的服务基站进行相关的协商，并把协商结果发送给主叫终 端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
可选地， 上述处理器 2304, 具体用于通过接收装置 2301通过基站间接口 接收上述被叫终端的服务基站发送的资源分配请求后执行资源分配协商； 或 者， 指示发射装置 2302向无线资源管理协调器发送主叫终端的服务基站的资 源状况信息， 并通过接收装置 2301接收上述无线资源管理协调器返回的执行 资源分配协商的资源分配结果。
可选地， 上述处理器 2304, 具体用于通过接收装置 2301通过基站间接口 接收来自上述被叫终端的服务基站的资源分配请求； 指示发射装置 2302向上 述被叫终端的服务基站发送上述主叫终端的服务基站的可用资源信息，并通过 接收装置 2301接收上述被叫终端返回的设备间通信的资源分配协商结果。
可选地， 上述处理器 2304, 具体用于通过接收装置 2301通过基站间接口 接收来自上述被叫终端的服务基站的上述被叫终端的定时信息以及主叫终端 的定时信息获知请求；依据上述被叫终端的定时信息确定上述主叫终端的定时 信； 指示发射装置 2302向上述被叫终端的服务基站返回上述主叫终端的定时 信息； 或者， 指示发射装置 2302向无线资源管理协调器发送上述主叫终端的 定时信息， 并通过接收装置 2301接收上述无线资源管理协调器返回的上述被 叫终端的定时信息。
本发明实施例还提供了一种移动性管理实体， 如图 24所示， 包括： 接收 装置 2401、 发射装置 2402、 存储器 2403以及处理器 2404;
其中上述处理器 2404, 用于通过接收装置 2401接收到主叫终端的服务基 站转发的主叫终端的呼叫请求后，若上述呼叫请求对应的被叫终端与上述主叫 终端属于同一个设备间通信 D2D协作集合，则指示发射装置 2402向上述主叫 终端的服务基站发送上述被叫终端的服务基站信息，使主叫终端的服务基站与 上述被叫终端的服务基站进行资源分配协商和定时同步协商， 或者，指示发射 装置 2402向上述被叫终端的服务基站发送上述主叫终端的服务基站信息， 使 被叫终端的服务基站与上述主叫终端的服务基站进行资源分配协商和定时同 步协商，资源分配协商和定时同步协商的协商结果用于上述主叫终端与被叫终 端进行设备间通信。
本发明实施例，基站可以通过移动性管理实体来获得其他基站的信息， 然 后可以依据上述其他基站的信息来确定基站并与该基站进行相关的协商，这样 终端则可以通过该终端的服务基站获得协商结果，这样可以实现异基站下的主 叫终端与被叫终端间的 D2D通信。
进一步地， 上述处理器 2404, 还用于在指示发射装置 2402向上述主叫终 端的服务基站发送上述被叫终端的服务基站信息， 或者， 指示发射装置 2402 向上述被叫终端的服务基站发送上述主叫终端的服务基站信息之前，确定被叫 终端是否为连接态， 若否， 则指示发射装置 2402寻呼被叫终端， 使被叫终端 进入连接态。
本发明实施例还提供了一种通信系统， 如图 25所示， 包括： 至少两个基 站 2501 , —个移动性管理实体 2502, 上述至少两个基站 2501中包含一个作为 主叫终端的服务基站以及一个作为被叫终端的服务基站；
作为主叫终端的服务基站是图 6至图 8B中任意一项的基站， 作为被叫终 端的服务基站是图 14至 16B中任意一项的基站；上述移动性管理实体为图 12 或图 13中的移动性管理实体； 或者，
作为主叫终端的服务基站是图 17至 19B中任意一项的基站， 作为被叫终 端的服务基站是图 9至图 11B 中任意一项的基站； 上述移动性管理实体为图 12或图 13中的移动性管理实体； 或者，
作为主叫终端的服务基站是图 20中的基站， 作为被叫终端的服务基站是 图 21中的基站； 上述移动性管理实体为图 24中的移动性管理实体； 或者， 作为主叫终端的服务基站是图 22中的基站， 作为被叫终端的服务基站是 图 23中的基站； 上述移动性管理实体为图 24的移动性管理实体。
上述通信系统与终端组网通信的组网结构示意图， 请参阅图 26所示， 包 含两个基站（eNBl和 eNB2 ), —个 MME, 分別位于两个基站下的两个终端 ( UE1和 UE2, User Equipment )。 UE1和 UE2之间采用 D2D通信。
本发明实施例，被叫终端的服务基站通过移动性管理实体来获得主叫终端 的服务基站的信息，然后依据主叫终端的服务基站的信息来确定主叫终端的服 务基站并与主叫终端的服务基站进行相关的协商，并把协商结果发送给主叫终 端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。 或者， 本 发明实施例，主叫终端的服务基站通过移动性管理实体来获得被叫终端的服务 基站的信息，然后依据被叫终端的服务基站的信息来确定被叫终端的服务基站 并与被叫终端的服务基站进行相关的协商， 并把协商结果发送给主叫的终端， 这样可以实现异基站下的主叫终端与被叫终端间的 D2D通信。
值得注意的是， 上述基站只是按照功能逻辑进行划分的，但并不局限于上 述的划分， 只要能够实现相应的功能即可； 另外， 各功能单元的具体名称也只 是为了便于相互区分， 并不用于限制本发明的保护范围。
另外，本领域普通技术人员可以理解实现上述各方法实施例中的全部或部 分步骤是可以通过程序来指令相关的硬件完成，相应的程序可以存储于一种计 算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上仅为本发明较佳的具体实施方式， 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实施例揭露的技术范围内， 可轻 易想到的变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保 护范围应该以权利要求的保护范围为准。

Claims

权 利 要 求
1、 一种设备间通信的方法， 其特征在于， 包括：
主叫终端的服务基站在接收主叫终端的呼叫请求后，将所述呼叫请求转发 给移动性管理实体；
接收移动性管理实体返回的所述呼叫请求对应的被叫终端的服务基站信 息；
依据所述被叫终端的服务基站信息确定被叫终端的服务基站，并与所述被 叫终端的服务基站进行资源分配协商和定时同步协商；
将资源分配协商和定时同步协商的协商结果发送给主叫终端，所述协商结 果用于所述主叫终端与被叫终端进行设备间通信。
2、根据权利要求 1所述方法， 其特征在于， 所述与所述被叫终端的服务基 站进行资源分配协商包括：
通过基站间接口向所述被叫终端的服务基站发送资源分配请求进行资源 分配协商； 或者， 向无线资源管理协调器发送资源分配请求以及主叫终端的服 务基站的资源状况信息，并接收所述无线资源管理协调器返回的执行资源分配 协商的资源分配结果。
3、根据权利要求 2所述方法， 其特征在于， 所述通过基站间接口向所述被 叫终端的服务基站发送资源分配请求进行资源分配协商包括：
通过基站间接口将资源分配请求发送给被叫终端的服务器基站；接收被叫 终端的服务基站返回的被叫终端的服务基站的可用资源信息，并据此确定设备 间通信的资源分配协商结果。
4、 根据权利要求 1至 3任意一项所述方法， 其特征在于， 所述与所述被叫 终端的服务基站进行定时同步协商包括：
通过基站间接口向所述被叫终端的服务基站发送所述主叫终端的定时信 息以及被叫终端的定时信息获知请求，接收所述被叫终端的服务基站返回的所 述被叫终端的定时信息； 或者， 向无线资源管理协调器发送所述主叫终端的定 时信息以及被叫终端的定时信息获知请求，并接收所述无线资源管理协调器返 回的所述被叫终端的定时信息。
5、 一种设备间通信的方法， 其特征在于， 包括： 被叫终端的服务基站与主叫终端的服务基站进行资源分配协商和定时同 步协商； 所述被叫终端的服务基站， 由所述主叫服务基站依据接收到的来自移 动性管理实体的所述被叫终端的服务基站信息确定；
将资源分配协商和定时同步协商的协商结果发送给被叫终端，用于所述主 叫终端与被叫终端进行设备间通信。
6、根据权利要求 5所述方法， 其特征在于， 所述被叫终端的服务基站与主 叫终端的服务基站进行资源分配协商包括：
通过基站间接口接收所述主叫终端的服务基站发送的资源分配请求后执 行资源分配协商； 或者， 向无线资源管理协调器发送被叫终端的服务基站的资 源状况信息，并接收所述无线资源管理协调器返回的执行资源分配协商的资源 分配结果。
7、根据权利要求 6所述方法， 其特征在于， 所述通过基站间接口接收所述 主叫终端的服务基站发送的资源分配请求后执行资源分配协商包括：
通过基站间接口接收来自所述主叫终端的服务基站的资源分配请求；向所 述主叫终端的服务基站发送所述被叫终端的服务基站的可用资源信息，并接收 所述主叫终端返回的设备间通信的资源分配协商结果。
8、 根据权利要求 5至 7任意一项所述方法， 其特征在于， 所述被叫终端的 服务基站与主叫终端的服务基站进行定时同步协商包括：
通过基站间接口接收来自所述主叫终端的服务基站的所述主叫终端的定 时信息以及被叫终端的定时信息获知请求；依据所述主叫终端的定时信息确定 并向所述主叫终端的服务基站返回所述被叫终端的定时信息； 或者， 向无线资 源管理协调器发送所述被叫终端的定时信息，并接收所述无线资源管理协调器 返回的所述主叫终端的定时信息。
9、 一种设备间通信的方法， 其特征在于， 包括：
被叫终端的服务基站接收移动性管理实体发送的主叫终端的服务基站信 息；
依据所述主叫终端的服务基站信息确定主叫终端的服务基站，并与所述主 叫终端的服务基站进行资源分配协商和定时同步协商；
将资源分配协商和定时同步协商的协商结果发送给被叫终端，用于所述主 叫终端与被叫终端进行设备间通信。
10、 根据权利要求 9所述方法， 其特征在于， 所述与所述主叫终端的服务 基站进行资源分配协商包括：
通过基站间接口向所述主叫终端的服务基站发送资源分配请求进行资源 分配协商； 或者， 向无线资源管理协调器发送资源分配请求以及被叫终端的服 务基站的资源状况信息，并接收所述无线资源管理协调器返回的执行资源分配 协商的资源分配结果。
11、 根据权利要求 10所述方法， 其特征在于， 所述通过基站间接口向所述 主叫终端的服务基站发送资源分配请求进行资源分配协商包括：
通过基站间接口将资源分配请求发送给主叫终端的服务器基站；接收主叫 终端的服务基站返回的主叫终端的服务基站的可用资源信息，并据此确定设备 间通信的资源分配协商结果。
12、 根据权利要求 9至 11任意一项所述方法， 其特征在于， 所述与所述主 叫终端的服务基站进行定时同步协商包括：
通过基站间接口向所述主叫终端的服务基站发送所述主叫终端的定时信 息以及主叫终端的定时信息获知请求，接收所述主叫终端的服务基站返回的所 述主叫终端的定时信息； 或者， 向无线资源管理协调器发送所述被叫终端的定 时信息以及主叫终端的定时信息获知请求，并接收所述无线资源管理协调器返 回的所述主叫终端的定时信息。
13、 一种设备间通信的方法， 其特征在于， 包括：
主叫终端的服务基站在接收主叫终端的呼叫请求后，将所述呼叫请求转发 给移动性管理实体；使所述移动性管理实体将主叫终端的服务基站信息发送给 所述呼叫请求对应的被叫终端的服务基站，并使所述被叫终端的服务基站依据 所述主叫终端的服务基站信息确定主叫终端的服务基站；
与所述主叫终端的服务基站进行资源分配协商和定时同步协商； 将资源分配协商和定时同步协商的协商结果发送给主叫终端，用于所述主 叫终端与被叫终端进行设备间通信。
14、 根据权利要求 13所述方法， 其特征在于， 所述与所述主叫终端的服务 基站进行资源分配协商包括： 通过基站间接口接收所述被叫终端的服务基站发送的资源分配请求后执 行资源分配协商； 或者， 向无线资源管理协调器发送主叫终端的服务基站的资 源状况信息，并接收所述无线资源管理协调器返回的执行资源分配协商的资源 分配结果。
15、 根据权利要求 14所述方法， 其特征在于， 所述通过基站间接口接收所 述被叫终端的服务基站发送的资源分配请求后执行资源分配协商包括：
通过基站间接口接收来自所述被叫终端的服务基站的资源分配请求；向所 述被叫终端的服务基站发送所述主叫终端的服务基站的可用资源信息，并接收 所述被叫终端返回的设备间通信的资源分配协商结果。
16、 根据权利要求 13至 15任意一项所述方法， 其特征在于， 所述与所述主 叫终端的服务基站进行定时同步协商包括：
通过基站间接口接收来自所述被叫终端的服务基站的所述被叫终端的定 时信息以及主叫终端的定时信息获知请求；依据所述被叫终端的定时信息确定 并向所述被叫终端的服务基站返回所述主叫终端的定时信息； 或者， 向无线资 源管理协调器发送所述主叫终端的定时信息，并接收所述无线资源管理协调器 返回的所述被叫终端的定时信息。
17、 一种设备间通信的方法， 其特征在于， 包括：
接收主叫终端的服务基站转发的主叫终端的呼叫请求；
若所述呼叫请求对应的被叫终端与所述主叫终端属于同一个设备间通信 D2D协作集合，则向所述主叫终端的服务基站发送所述被叫终端的服务基站信 息，使主叫终端的服务基站与所述被叫终端的服务基站进行资源分配协商和定 时同步协商， 或者， 向所述被叫终端的服务基站发送所述主叫终端的服务基站 信息，使被叫终端的服务基站与所述主叫终端的服务基站进行资源分配协商和 定时同步协商，资源分配协商和定时同步协商的协商结果用于所述主叫终端与 被叫终端进行设备间通信。
18、 根据权利要求 7所述方法， 其特征在于， 在向所述主叫终端的服务基 站发送所述被叫终端的服务基站信息， 或者， 向所述被叫终端的服务基站发送 所述主叫终端的服务基站信息之前还包括：
确定被叫终端是否为连接态， 若否， 则寻呼被叫终端， 使被叫终端进入连 接态。
19、 一种基站， 其特征在于， 包括：
第一呼叫请求接收单元， 用于接收主叫终端的呼叫请求；
第一呼叫请求发送单元，用于将所述第一呼叫请求接收单元接收到的呼叫 请求转发给移动性管理实体；
第一基站信息接收单元，用于接收移动性管理实体返回的所述第一呼叫请 求发送单元发送的呼叫请求对应的被叫终端的服务基站信息；
第一基站确定单元，用于依据所述第一基站信息接收单元接收的所述被叫 终端的服务基站信息确定被叫终端的服务基站；
第一协商控制单元，用于控制与所述第一基站确定单元确定的被叫终端的 服务基站进行资源分配协商和定时同步协商；
第一结果发送单元，用于将所述第一协商控制单元进行资源分配协商和定 时同步协商的协商结果发送给主叫终端，所述协商结果用于所述主叫终端与被 叫终端进行设备间通信。
20、 根据权利要求 9所述基站， 其特征在于， 所述第一协商控制单元包括： 第一发送单元，用于通过基站间接口向所述被叫终端的服务基站发送资源 分配请求进行资源分配协商； 或者， 所述第一协商控制单元包括：
第二发送单元，用于向无线资源管理协调器发送资源分配请求以及主叫终 端的服务基站的资源状况信息；
第一结果接收单元，用于接收所述无线资源管理协调器返回的执行资源分 配协商的资源分配结果。
21、 根据权利要求 20所述基站， 其特征在于，
所述第一发送单元，具体用于通过基站间接口将资源分配请求发送给被叫 终端的服务器基站；使被叫终端的服务基站返回被叫终端的服务基站的可用资 源信息， 并由第一协商控制单元据此确定设备间通信的资源分配协商结果。
22、 根据权利要求 19至 21任意一项所述基站， 其特征在于， 所述第一协商 控制单元包括：
第三发送单元，用于通过基站间接口向所述被叫终端的服务基站发送所述 主叫终端的定时信息以及被叫终端的定时信息获知请求； 第一定时信接收单元，用于接收所述被叫终端的服务基站返回的所述被叫 终端的定时信息； 或者， 所述第一协商控制单元包括：
第四发送单元，用于向无线资源管理协调器发送所述主叫终端的定时信息 以及被叫终端的定时信息获知请求；
第二定时信接收单元，用于接收所述无线资源管理协调器返回的所述被叫 终端的定时信息。
23、 一种基站， 其特征在于， 包括：
第三协商控制单元，用于与主叫终端的服务基站进行资源分配协商和定时 同步协商； 所述被叫终端的服务基站， 由所述主叫服务基站依据接收到的来自 移动性管理实体的被叫终端的服务基站信息确定；
第三结果发送单元，用于将资源分配协商和定时同步协商的协商结果发送 给被叫终端， 用于所述主叫终端与被叫终端进行设备间通信。
24、根据权利要求 23所述基站，其特征在于，所述第三协商控制单元包括： 第一接收单元，用于通过基站间接口接收所述主叫终端的服务基站发送的 资源分配请求执行资源分配协商； 或者， 所述第三协商控制单元包括：
第九发送单元，用于向无线资源管理协调器发送被叫终端的服务基站的资 源状况信息；
第三结果接收单元，用于接收所述无线资源管理协调器返回的执行资源分 配协商的资源分配结果。
25、 根据权利要求 24所述基站， 其特征在于，
所述第一接收单元，具体用于通过基站间接口接收来自所述主叫终端的服 务基站的资源分配请求； 所述第三协商控制单元还包括：
第九发送单元，用于向所述主叫终端的服务基站发送所述被叫终端的服务 基站的可用资源信息；
第四结果接收单元，用于接收所述主叫终端返回的设备间通信的资源分配 协商结果。
26、 根据权利要求 23至 25任意一项所述基站， 其特征在于， 所述第三协商 控制单元包括：
第二接收单元，用于通过基站间接口接收来自所述主叫终端的服务基站的 所述主叫终端的定时信息以及被叫终端的定时信息获知请求；用于依据所述主 叫终端的定时信息确定所述被叫终端的定时信息；
第四结果发送单元，用于向所述主叫终端的服务基站返回所述被叫终端的 定时信息； 或者， 所述第三协商控制单元包括：
第十发送单元， 用于向无线资源管理协调器发送所述被叫终端的定时信 息；
第五结果接收单元，用于接收所述无线资源管理协调器返回的所述主叫终 端的定时信息。
27、 一种基站， 其特征在于， 包括：
第二基站信息接收单元，用于接收移动性管理实体发送的主叫终端的服务 基站信息；
第二基站确定单元，用于依据所述第一基站信息接收单元接收的所述主叫 终端的服务基站信息确定主叫终端的服务基站；
第二协商控制单元，用于控制与所述第二基站确定单元确定的所述主叫终 端的服务基站进行资源分配协商和定时同步协商；
第二结果发送单元，用于将所述第二协商控制单元进行资源分配协商和定 时同步协商的协商结果发送给被叫终端，用于所述主叫终端与被叫终端进行设 备间通信。
28、根据权利要求 27所述基站，其特征在于，所述第二协商控制单元包括： 第五发送单元，用于通过基站间接口向所述主叫终端的服务基站发送资源 分配请求进行资源分配协商； 或者， 所述第二协商控制单元包括：
第六发送单元，用于向无线资源管理协调器发送资源分配请求以及被叫终 端的服务基站的资源状况信息；
第二结果接收单元，用于接收所述无线资源管理协调器返回的执行资源分 配协商的资源分配结果。
29、 根据权利要求 28所述基站， 其特征在于，
所述第五发送单元，具体用于通过基站间接口将资源分配请求发送给主叫 终端的服务器基站；使主叫终端的服务基站返回主叫终端的服务基站的可用资 源信息， 并使所述第二协商控制单元据此确定设备间通信的资源分配协商结 果。
30、 根据权利要求 27至 29任意一项所述基站， 其特征在于， 所述第二协商 控制单元包括：
第七发送单元，用于通过基站间接口向所述主叫终端的服务基站发送所述 主叫终端的定时信息以及主叫终端的定时信息获知请求；
第三定时信息接收单元，用于接收所述主叫终端的服务基站返回的所述主 叫终端的定时信息； 或者， 所述第二协商控制单元包括：
第八发送单元，用于向无线资源管理协调器发送所述被叫终端的定时信息 以及主叫终端的定时信息获知请求；
第四定时信息接收单元，用于接收所述无线资源管理协调器返回的所述主 叫终端的定时信息。
31、 一种基站， 其特征在于， 包括：
第三呼叫请求接收单元， 用于接收主叫终端的呼叫请求；
第二呼叫请求发送单元，用于将所述第三呼叫请求接收单元接收到的呼叫 请求转发给移动性管理实体；使所述移动性管理实体将主叫终端的服务基站信 息发送给所述呼叫请求对应的被叫终端的服务基站，并使所述被叫终端的服务 基站依据所述主叫终端的服务基站信息确定主叫终端的服务基站；
第四协商控制单元，用于与所述主叫终端的服务基站进行资源分配协商和 定时同步协商；
第五结果发送单元，用于将资源分配协商和定时同步协商的协商结果发送 给主叫终端， 用于所述主叫终端与被叫终端进行设备间通信。
32、根据权利要求 31所述基站，其特征在于，所述第四协商控制单元包括： 第三接收单元，用于通过基站间接口接收所述被叫终端的服务基站发送的 资源分配请求后执行资源分配协商； 或者， 所述第四协商控制单元包括：
第十一发送单元，用于向无线资源管理协调器发送主叫终端的服务基站的 资源状况信息；
第六结果接收单元，用于接收所述无线资源管理协调器返回的执行资源分 配协商的资源分配结果。
33、 根据权利要求 32所述基站， 其特征在于， 所述第三接收单元，具体用于通过基站间接口接收来自所述被叫终端的服 务基站的资源分配请求； 所述第四协商控制单元还包括：
第十二发送单元，用于向所述被叫终端的服务基站发送所述主叫终端的服 务基站的可用资源信息；
第七结果接收单元，用于接收所述被叫终端返回的设备间通信的资源分配 协商结果。
34、 根据权利要求 31至 33任意一项所述基站， 其特征在于， 所述第四协商 控制单元包括：
第四接收单元，用于通过基站间接口接收来自所述被叫终端的服务基站的 所述被叫终端的定时信息以及主叫终端的定时信息获知请求；用于所述被叫终 端的定时信息确定所述主叫终端的定时信息；
第六结果发送单元，用于向所述被叫终端的服务基站返回所述主叫终端的 定时信息； 或者， 所述第四协商控制单元包括：
第十三发送单元，用于向无线资源管理协调器发送所述主叫终端的定时信 息；
第八结果接收单元，用于接收所述无线资源管理协调器返回的所述被叫终 端的定时信息。
35、 一种移动性管理实体， 其特征在于， 包括：
第二呼叫请求接收单元，用于接收主叫终端的服务基站转发的主叫终端的 呼叫请求；
集合判断单元，用于判断所述第二呼叫请求接收单元接收到的呼叫请求对 应的被叫终端与所述主叫终端是否属于同一个 D2D协作集合；
基站信息发送单元，用于若集合判断单元确定所述呼叫请求对应的被叫终 端与所述主叫终端属于同一个 D2D协作集合，则向所述主叫终端的服务基站发 送所述被叫终端的服务基站信息，使主叫终端的服务基站与所述被叫终端的服 务基站进行资源分配协商和定时同步协商， 或者， 向所述被叫终端的服务基站 发送所述主叫终端的服务基站信息，使被叫终端的服务基站与所述主叫终端的 服务基站进行资源分配协商和定时同步协商，资源分配协商和定时同步协商的 协商结果用于所述主叫终端与被叫终端进行设备间通信。
36、 根据权利要求 35所述移动性管理实体， 其特征在于， 还包括： 状态确定单元，用于在所述基站信息发送单元向所述主叫终端的服务基站 发送所述被叫终端的服务基站信息， 或者， 向所述被叫终端的服务基站发送所 述主叫终端的服务基站信息之前， 确定被叫终端是否为连接态；
寻呼控制单元，用于若所述状态确定单元确定结果为否，则寻呼被叫终端， 使被叫终端进入连接态。
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