CN104144403B

CN104144403B - A kind of communication means and equipment, system

Info

Publication number: CN104144403B
Application number: CN201310173097.1A
Authority: CN
Inventors: 赵亚利; 刘佳敏; 焦斌
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2013-05-10
Filing date: 2013-05-10
Publication date: 2017-11-07
Anticipated expiration: 2033-05-10
Also published as: CN104144403A

Abstract

The embodiments of the invention provide a kind of communication means and equipment, system, realize that D2D communicates to realize that UE is addressed to another UE for expecting to carry out D2D communications, and based on addressing results.A kind of communication means provided in an embodiment of the present invention includes：First user equipment (UE) obtains the 2nd UE addressing information from server when it is determined that needing to carry out D2D communications with the 2nd UE；First UE is realized and communicated with the D2D between the 2nd UE according to the 2nd UE addressing information.

Description

A kind of communication means and equipment, system

Technical field

The present invention relates to moving communicating field, more particularly to a kind of communication means and equipment, system.

Background technology

In Long Term Evolution (Long Term Evolved, LTE) system, that communication is taken is the central controlled side of network The up-downgoing data of formula, i.e. user equipment (User Equipment, UE) are all transmitted and received under the control of a network.UE Communication between UE, is forwarded by network and is controlled.Direct communication link, such as Fig. 1 are not present between UE and UE It is shown.

In GSM future development, in order to better meet user's request, the information interaction of lifting means Efficiency, introduces and finds (Device to Device Discovery, D2D Discovery) or even directly between equipment mutually The mechanism of communication (Device to Device Communication, D2D Communication), as shown in Figure 2.In D2D Allow to carry out certain direct communication in communication pattern, between terminal and terminal, these direct communication links can be in network Set up under control or auxiliary.The basis that D2D communications are carried out between terminal and terminal is to carry out D2D to close terminal Discovery。

The basis for carrying out D2D communications between terminal and terminal as previously described is to carry out D2D to close terminal Discovery, D2D Discovery core are that requirement finds that UE is detected to the signal specific for being found UE transmissions.It is right If to realize D2D Discovery between two specified UE, find UE firstly the need of know be found UE transmission be used for D2D Discovery signal specific, will obtain the D2D Discovery signals and relate to addressing between specified UE Journey, at present still without associated solutions.

The content of the invention

The embodiments of the invention provide a kind of communication means and equipment, system, to realize UE to expecting to carry out D2D communications Another UE be addressed, and based on addressing results realize D2D communicate.

A kind of communication means provided in an embodiment of the present invention includes：

First user equipment (UE) obtains seeking for the 2nd UE when it is determined that needing to carry out D2D communications with the 2nd UE from server Location information；

First UE is realized and communicated with the D2D between the 2nd UE according to the 2nd UE addressing information.

A kind of UE provided in an embodiment of the present invention includes：

Addressing information acquiring unit, for when it is determined that needing to carry out D2D communications with the 2nd UE, second to be obtained from server UE addressing information；

D2D communication units, for the addressing information according to the 2nd UE, realization communicates with the D2D between the 2nd UE.

A kind of communication system provided in an embodiment of the present invention includes：

At least two user equipment (UE)s and server；Wherein,

The server is used to notify the 2nd UE addressing information to the first UE；

First UE is used for when it is determined that needing to carry out D2D communications with the 2nd UE, and the 2nd UE addressing letter is obtained from server Breath；According to the 2nd UE addressing information, realization communicates with the D2D between the 2nd UE.

The embodiment of the present invention, by the first user equipment (UE) when it is determined that needing to carry out D2D communications with the 2nd UE, from service Device obtains the 2nd UE addressing information, and the first UE is realized and communicated with the D2D between the 2nd UE according to the 2nd UE addressing information； Realize UE to expect carry out D2D communications another UE be addressed, and based on addressing results realize D2D communication, be equipment it Between find mutually, and set up direct communication between equipment and provide condition.

Brief description of the drawings

Fig. 1 is communication link schematic diagram in the prior art；

Fig. 2 is D2D communication link schematic diagrames；

Fig. 3 is the schematic flow sheet of communication means provided in an embodiment of the present invention；

The schematic flow sheet for the communication means that Fig. 4 provides for the specific embodiment of the invention；

The schematic flow sheet for the communication means that Fig. 5 provides for another specific embodiment of the present invention；

The schematic flow sheet for the communication means that Fig. 6 provides for another specific embodiment of the present invention；

Fig. 7 is a kind of structural representation of user equipment provided in an embodiment of the present invention；

Fig. 8 is a kind of structural representation of communication system provided in an embodiment of the present invention；

A kind of structural representation for communication system that Fig. 9 provides for another embodiment of the present invention；

A kind of structural representation for communication system that Figure 10 provides for another embodiment of the present invention；

A kind of structural representation for communication system that Figure 11 provides for another embodiment of the present invention.

Embodiment

Referring to Fig. 3, a kind of communication means provided in an embodiment of the present invention includes：

S301, the first user equipment (UE) obtain the 2nd UE when it is determined that needing to carry out D2D communications with the 2nd UE from server Addressing information；

S302, the first UE are realized and communicated with the D2D between the 2nd UE according to the 2nd UE addressing information.

Datagram mode is obtained the invention provides two kinds, one of which is obtained by service server, the party UE needs to report the addressing information of oneself to service server in advance under formula.

Preferably, when the server is service server, the first UE obtains the 2nd UE addressing information from server Including：First UE sends the Datagram request for obtaining the 2nd UE to service server；First UE obtains service server and returned The 2nd UE returned addressing information.

The service server is by supporting the UE of D2D communication functions in attaching process or startup D2D communication functions The addressing information that UE is reported is obtained, or the inquiry based on service server obtains the addressing information that UE is reported.

Preferably, the addressing information includes：International mobile subscriber identity (International Mobile Subscriber Identity, IMSI) or System Architecture Evolution (System Architecture Evolution, SAE) face When mobile user identification (SAE Temporary Mobile Subscriber Identity, S-TMSI), and tracking area mark Know (Tracking Area Identity, TAI)；Or, the addressing information includes：IMSI or S-TMSI, and it is evolved Base Station Identification (evolved NodeB IDentification, eNB ID) or the universal land radio access web of evolution (Evolved Universal Terrestrial Radio Access Network, E-UTRAN) Cell Global Identity (E- UTRAN Cell Global Identifier,ECGI)；Or, the addressing information includes：IMSI or S-TMSI, TAI, with And eNB ID or ECGI；Or, the addressing information includes：Global unique temporary identity (Globally Unique Temporary Identity,GUTI)。

Obtained at this by service server under Datagram mode, implementing a kind of method of D2D communications is：By First eNB determines that the first UE is used for the configuration information that D2D has found.

Preferably, addressing informations of the first UE according to the 2nd UE, realization communicates with the D2D between the 2nd UE, including：First UE sends the request message that D2D communications are carried out with the 2nd UE to the evolved base station eNB for serving the first UE, wherein carrying second UE addressing information；The eNB for serving the first UE determines that the first UE is used for the configuration information that D2D has found；Serve the first UE's The first UE configuration informations and the request message for being used for D2D discoveries is sent to second by eNB according to the 2nd UE addressing information UE；2nd UE is used for the configuration information that D2D has found according to the first UE, the first UE discovery is carried out, when the first UE signal quality When meeting condition, according to the first UE addressing information to the first UE or serve the first UE eNB reply the first UE and the 2nd UE Carry out the response message of D2D communications.

According to the difference of the communication link between the first UE and the 2nd UE, the configuration information that the first UE is used for D2D discoveries exists The transmission of network side is divided into following three kinds of situations again：

Serve the first UE eNB according to the 2nd UE addressing information by the first UE be used for configuration information that D2D has found and The request message is sent to the 2nd UE, including：When the eNB for serving the first UE is determined originally according to the 2nd UE addressing information When eNB serves two UE, the request message is sent to the 2nd UE；Wherein carrying the first UE is used for the configuration that D2D has found Information.

Or, the first UE is matched somebody with somebody confidence by the eNB for serving the first UE according to the 2nd UE addressing information for what D2D had found Breath and the request message are sent to the 2nd UE, including：When the eNB for serving the first UE is determined according to the 2nd UE addressing information When this eNB does not serve two UE, the eNB for serving the first UE has found that request disappears to the MME transmissions D2D for serving the first UE Breath, wherein carrying the first UE is used for configuration information, the first UE addressing information and the 2nd UE that D2D has found addressing information；Clothes It is engaged in determining that this MME serves the 2nd UE in the first UE MME；The first UE MME is served according to the 2nd UE addressing information, really Surely the 2nd UE eNB is served；The MME for serving the first UE enters to eNB transmissions the first UE and the 2nd UE for serving the 2nd UE The request message of row D2D communications, wherein carrying the first UE is used for the configuration information of D2D discoveries and the first UE addressing information；Clothes The eNB being engaged in the 2nd UE forwards the request message of the first UE and the 2nd UE progress D2D communications to the 2nd UE.

Or, the first UE is matched somebody with somebody confidence by the eNB for serving the first UE according to the 2nd UE addressing information for what D2D had found Breath and the request message are sent to the 2nd UE, including：When the eNB for serving the first UE is determined according to the 2nd UE addressing information When this eNB does not serve two UE, the eNB for serving the first UE has found that request disappears to the MME transmissions D2D for serving the first UE Breath, wherein carrying the first UE is used for configuration information, the first UE addressing information and the 2nd UE that D2D has found addressing information；Clothes The MME being engaged in the first UE is according to the 2nd UE addressing information, it is determined that serving the 2nd UE MME；Serve the first UE MME to The MME forwardings D2D for serving the 2nd UE has found request message；The 2nd UE MME is served according to the 2nd UE addressing information, really Surely the 2nd UE eNB is served；The MME for serving the 2nd UE enters to eNB transmissions the first UE and the 2nd UE for serving the 2nd UE The request message of row D2D communications, wherein carrying the first UE is used for the configuration information of D2D discoveries and the first UE addressing information；Clothes The eNB being engaged in the 2nd UE forwards the request message of the first UE and the 2nd UE progress D2D communications to the 2nd UE.

Obtained at this by service server under Datagram mode, implementing another method of D2D communications is： Determine that the 2nd UE is used for the configuration information that D2D has found by the 2nd eNB.

Preferably, addressing informations of the first UE according to the 2nd UE, realization communicates with the D2D between the 2nd UE, including：First UE sends the request message that D2D communications are carried out with the 2nd UE to the evolved base station eNB for serving the first UE, wherein carrying second UE addressing information；When the eNB for serving the first UE determines that this eNB does not serve two UE, serve the first UE eNB to The MME for serving the first UE sends D2D discovery request messages, wherein carrying the first UE addressing information and the 2nd UE addressing letter Breath；The first UE MME is served according to the 2nd UE addressing information, it is determined that serving the 2nd UE MME；When serving the first UE MME when determining that this MME does not serve two UE, the MME for serving the first UE forwards D2D hairs to the MME for serving the 2nd UE Existing request message；The 2nd UE MME is served according to the 2nd UE addressing information, it is determined that serving the 2nd UE eNB；Serve 2nd UE MME sends the request message that the first UE and the 2nd UE carries out D2D communications to the eNB for serving the 2nd UE, wherein taking Addressing information with the first UE；The eNB for serving the 2nd UE determines that the 2nd UE is used for the configuration information that D2D has found；Serve The configuration information for D2D discoveries is sent to the 2nd UE by two UE eNB, and, will according to the first UE addressing information It is described to be sent to the first UE for the D2D configuration informations found；First UE is used for the configuration information that D2D has found according to the first UE, The 2nd UE discovery is carried out, when the 2nd UE signal quality meets condition, to the eNB for serving the first UE or second is served UE eNB requests carry out D2D communications.

In the specific implementation, the communication link between the first UE and the 2nd UE may be simpler.Preferably, when serving the When one UE eNB determines that this eNB serves two UE, the eNB for serving the first UE is directly determined and to the first UE and the 2nd UE Sending the first UE is used for the configuration information that D2D has found.Preferably, when the MME for serving the first UE determines that this MME serves second During UE, the MME for serving the first UE directly sends the first UE and the 2nd UE progress D2D communications to the eNB for serving the 2nd UE Request message, wherein carrying the first UE addressing information.

The Datagram mode of another acquisition that the present invention is provided, is to obtain Internet Protocol by high-level signaling (Internet Protocol, IP) address.

Preferably, the addressing information that the first UE obtains the 2nd UE from server includes：First UE is by high-level signaling from clothes Business device obtains the 2nd UE addressing information.

Preferably, the high-level signaling is session initiation protocol (Session Initiation Protocol, SIP) letter Order, the server is sip server.

Preferably, the addressing information is IP address.

In the case where this is by way of high-level signaling obtains IP address, the configuration information that D2D has found is determined by the first eNB.Should Configuration information can directly notify the 2nd UE by the first eNB, can also be transmitted to the 2nd UE by the first UE.

Preferably, addressing informations of the first UE according to the 2nd UE, realization communicates with the D2D between the 2nd UE, including：First UE sends the request message that D2D communications are carried out with the 2nd UE to the evolved base station eNB for serving the first UE, wherein carrying second UE IP address；The eNB for serving the first UE determines that the first UE is used for the configuration information that D2D has found；Serve the first UE eNB The configuration information for D2D discoveries is sent to the first UE, and, the first UE eNB is served according to the 2nd UE IP The first UE configuration informations for being used for D2D discoveries are sent to the 2nd UE by address；2nd UE is used for matching somebody with somebody for D2D discoveries according to the first UE Confidence is ceased, and carries out the first UE discovery, when the first UE signal quality meets condition, and D2D communications are carried out to network side request.

Preferably, addressing informations of the first UE according to the 2nd UE, realization communicates with the D2D between the 2nd UE, including：First UE sends the request message that D2D communications are carried out with the 2nd UE to the evolved base station eNB for serving the first UE；Serve the first UE ENB determine the first UE be used for D2D find configuration information；Serve the first UE eNB is used for the configuration that D2D has found by described Information is sent to the first UE；First UE for the D2D configuration informations found is encapsulated as IP bags by described, by the 2nd UE IP Location is addressed to IP bags, and the IP bags are sent into the 2nd UE；2nd UE is used for the configuration information that D2D has found according to the first UE, The first UE discovery is carried out, when the first UE signal quality meets condition, D2D communications are carried out to network side request.

In the present invention, the 2nd UE can be multiple UE, and the first UE is addressed to multiple UE simultaneously.

The specific embodiment of the present invention is given below：

Specific embodiment one, as shown in figure 4, comprising the following steps：

Step 401a/401b：UE and service server interaction UE relevant informations；

Support that the UE of D2D functions can be when adhering to or starting D2D functions or based on server lookup in the step UE relevant informations are reported to server, wherein the addressing information comprising UE, for being addressed to UE.The addressing information that UE is reported Following combination can be but not limited to：

The IMSI (or S-TMSI) and TAI of the UE；

The eNB ID or ECGI of IMSI (or S-TMSI) and the UE ownership of the UE；

The TAI and ECGI or eNB ID of IMSI (or S-TMSI) and the UE ownership of the UE；

The GUTI of the UE；

, can be with the addressing information after server interactive refreshing, such as TAU (Tracking when UE addressing informations update Area Update, tracing section updating) update when.In general for connected state UE, its addressing information reported can be reported Any one combination is stated, but its addressing information should typically report first group or the 4th group for free time (IDLE) state UE, Middle combination is less suitable.

Step 402：UE1 obtains the addressing information for specifying D2D opposite ends UE (UE2)；

Once UE1 expects to start D2D discoveries/communication (Discovery/Communication) with designated terminal UE2, So can to server acquisition request UE2 addressing information, UE2 addressing information is sent to UE1 by server.UE2's seeks Location information can be but not limited to following combination：

UE2 IMSI (or S-TMSI) and TAI；

The eNB ID or ECGI of UE2 IMSI (or S-TMSI) and UE ownership；

The TAI and ECGI or eNB ID of UE2 IMSI (or S-TMSI) and UE ownership；

UE2 GUTI.

Step 403：UE1 sends request to its home base station (eNB1) and specified UE (UE2) carries out D2D Discovery's Request message；

UE1 sends and specified UE (UE2) progress D2D Discovery request message to its home base station eNB1, simultaneously Carry the UE2 obtained in step 402 from service server addressing information.

Step 404：ENB1 determines that UE1 is used for D2D Discovery configuration information；

ENB1 determines that UE1 is used for D2D Discovery configuration information, such as what UE1 was sent is used for D2D Discovery The letter such as the signal running time-frequency resource, MCS (Modulation and Coding Scheme, adjust coded system), the power that use Breath.

Step 405：ENB1 sends D2D to UE1 mobile management entity (Mobile Management Entity, MME) Discovery request messages；

ENB1 sends D2D Discovery request messages to UE1 MME (MME1), while carrying UE1 is used for D2D The addressing information of Discovery configuration information, UE1 addressing information and UE2.Need explanation：If eNB1 is sought according to UE2's Location information can determine UE2 also in eNB1 range of managements and in connected state, directly can send D2D connections to UE2 and set up Request, it is not necessary to again by MME1.

Step 406：MME1 determines the MME (MME2) that UE2 is used；

MME1 determines the MME that UE2 can be used according to the UE2 received in step 405 addressing information, it is allowed to MME1 and MME2 is same MME.MME1 determines that the concrete mode for the MME that UE2 can be used is illustrated such as according to UE2 addressing information Under：

UE2 addressing informations are IMSI (or S-TMSI) and TAI, then MME1 can determine that UE2 can be used according to TAI MME；

UE2 addressing informations are the eNB ID or ECGI that IMSI (or S-TMSI) and UE belongs to, then MME1 can root The MME that UE2 can be used is determined according to eNB ID (ECGI preceding 20 bit is exactly eNB ID)；

UE2 addressing informations are the TAI and ECGI or eNB ID that IMSI (or S-TMSI) and UE belongs to, then MME1 can To determine the MME that UE2 can be used according to TAI or eNB ID；

UE2 addressing informations are GUTI, then MME1 can be according to national coding (the Mobile Country included in GUTI Code, MCC), mobile network coding (Mobile Network Code, MNC) and MME mark (MME Identifier, MMEI the MME that UE2 can be used) is determined.

Step 407：MME1 forwards UE1 D2D Discovery request messages to MME2；

Carrying UE1 while UE1 D2D Discovery request messages are sent is used for D2D Discovery configuration The addressing information of information, UE1 addressing information and UE2.

Step 408：MME2 determines the eNB (eNB2) where UE2；

MME2 determines that the concrete mode of the eNB where UE2 is illustrated below：

UE2 addressing informations are IMSI (or S-TMSI) and TAI, then if UE is in connected state, MME1 is according to IMSI Or S-TMSI is assured that the eNB of UE ownership；If UE is in Idle state, then MME1 can be based on IMSI and S-TMSI The eNB where paging (Paging) obtains UE is carried out to UE.

UE2 addressing informations are the eNB ID or ECGI that IMSI (or S-TMSI) and UE belongs to, then MME1 can root The eNB of UE2 ownership is determined according to eNB ID (ECGI preceding 20bit is exactly eNB ID).

UE2 addressing informations are the TAI and ECGI or eNB ID that IMSI (or S-TMSI) and UE belongs to, then MME1 can To determine the eNB that UE2 belongs to according to eNB ID.

UE2 addressing informations are GUTI, then MME1 needs IMSI and S-TMSI based on UE to carry out paging acquisitions to UE The eNB of UE ownership (S-TMSI can be obtained based on GUTI, and IMSI can be obtained according to the UE context in MME).

Step 409：The D2D Discovery request messages that MME2 is sent to eNB2 forwardings UE1 where UE2

D2D Discovery request messages carry the addressing that UE1 is used for D2D Discovery configuration information, UE1 simultaneously Information.

Step 410：ENB2 forwards the D2D Discovery request messages that UE1 is sent to UE2.

Step 411：UE2 carries out D2D discoveries to UE1；

The UE1 carried in the D2D Discovery request messages that UE2 is sent according to UE1 carries out the configuration information of D2D discoveries Carry out UE1 discovery, if UE1 signal qualitys can receive, then can the addressing information based on UE1 return to UE1 or UE1 The eNB1 of category replys D2D Discovery response messages, and eNB1 can subsequently configure UE1 and UE2 and carry out D2D Communication。

Specific embodiment 2：The information provided based on server is addressed that UE1 is as UE is had found, UE2 is as being found UE。

It is expected that the UE for carrying out D2D obtains opposite end UE addressing informations and interacted between the UE of D2D opposite ends is used for D2D Discovery relevant information process is as shown in Figure 5；Each corresponding step is described as follows：

Step 501a/501b：UE and business service interact the UE relevant informations；

Support that the UE of D2D functions can be when adhering to or starting D2D functions or based on server lookup in the step UE relevant informations are reported to server, wherein including the information addressed for UE.The addressing information that UE is reported can be but not limit In following combination：

The IMSI (or S-TMSI) and TAI of the UE；

The eNB ID or ECGI of IMSI (or S-TMSI) and the UE ownership of the UE；

The GUTI of the UE；

When UE addressing informations update, can with the addressing information after server interactive refreshing, such as TAU update when.One As for for connected state UE, its addressing information reported can report any of the above combinations, but for IDLE states UE its Addressing information should typically report first group or the 4th group, and middle combination is less suitable.

Step 502：UE1 obtains the addressing information for specifying D2D opposite ends UE (UE2)；

Once UE1 expects to start the D2D Discovery/Communication with designated terminal UE2, then Ke Yixiang UE2 addressing information is sent to UE1 by server acquisition request UE2 addressing information, server.UE2 addressing information can be with It is but not limited to following combination：

UE2 IMSI (or S-TMSI) and TAI；

The eNB ID or ECGI of UE2 IMSI (or S-TMSI) and UE ownership；

The TAI and ECGI or eNB ID of UE2 IMSI (or S-TMSI) and UE ownership；

UE2 GUTI.

Step 503：UE1 sends request to its home base station (eNB1) and specified UE (UE2) carries out D2D Discovery's Request message；

UE1 sends and specified UE (UE2) progress D2D Discovery request message to its home base station eNB1, simultaneously Carry the UE2 obtained in step 502 from service server addressing information.

Step 504：ENB1 sends D2D Discovery request messages to UE1 MME (MME1)；

ENB1 sends D2D Discovery request messages to UE1 MME (MME1).Need explanation：If eNB1 according to UE2 addressing information can determine UE2 also in eNB1 range of managements and in connected state, then whether determine UE2 by eNB1 Receive D2D Discovery, if can receive, then eNB1 can directly determine that UE2 is used for D2D discovery configuration Information, then eNB1 can be directly to UE2 transmission D2D connection foundation requests, while carrying the configuration for D2D discovery Information, it is not necessary to again by MME1.

Step 505：MME1 determines the MME (MME2) that UE2 is used；

MME1 determines the MME that UE2 belongs to according to the UE2 received in step 504 addressing information, it is allowed to MME1 and MME2 For same MME.MME1 determines that the concrete mode for the MME that UE2 can be used is illustrated below according to UE2 addressing information：

UE2 addressing informations are the eNB ID or ECGI that IMSI (or S-TMSI) and UE belongs to, then MME1 can root The MME that UE2 can be used is determined according to eNB ID (ECGI preceding 20bit is exactly eNB ID)；

UE2 addressing informations are GUTI, then MME1 can be according to MCC (the Mobile Country included in GUTI Code, national coding), MNC (Mobile Network Code, mobile network coding) and MMEI (MME Identifier, MME is identified) determine the MME that UE2 can be used.

Step 506：MME1 forwards UE1 D2D Discovery request messages to MME2；

Step 507：MME2 determines the eNB (eNB2) where UE2；

UE2 addressing informations are IMSI (or S-TMSI) and TAI, then if UE is in connected state, MME1 is according to IMSI Or S-TMSI is assured that the eNB of UE ownership；If UE is in Idle state, then MME1 can be based on IMSI and S-TMSI The eNB where Paging obtains UE is carried out to UE；

UE2 addressing informations are the eNB ID or ECGI that IMSI (or S-TMSI) and UE belongs to, then MME1 can root The eNB of UE2 ownership is determined according to eNB ID (ECGI preceding 20bit is exactly eNB ID)；

UE2 addressing informations are the TAI and ECGI or eNB ID that IMSI (or S-TMSI) and UE belongs to, then MME1 can To determine the eNB that UE2 belongs to according to eNB ID；

UE2 addressing informations are GUTI, then MME1 needs IMSI and S-TMSI based on UE to carry out paging acquisitions to UE (S-TMSI can be obtained the eNB of UE ownership based on GUTI, and IMSI can be according to the customer equipment context UE in MME Context is obtained).

Step 508：The D2D Discovery request messages that MME2 is sent to eNB2 forwardings UE1 where UE2；

D2D Discovery request messages carry UE1 addressing information simultaneously.

Step 509：ENB2 forwards the D2D Discovery request messages that UE1 is sent to UE2；

If determining whether UE2 receives D2D Discovery by eNB2, then eNB2 can determine that UE2 is used for D2D The running time-frequency resource, MCS, the work(that are used for D2D Discovery signal that Discovery configuration information, such as UE2 are sent The information such as rate.If being decided whether to receive D2D Discovery request messages by UE2 certainly, then eNB2 needs first to notify Determine that UE2 is used for D2D Discovery configuration information after UE2, UE2 feedback acknowledgment again.

Step 510：Configuration information for D2D Discovery is sent to UE2 by eNB2；

The configuration information for being used for D2D Discovery is sent to while eNB2 is also based on UE1 addressing informations UE1。

Step 511：UE1 carries out D2D discoveries to UE2；

The UE2 that UE1 is sent according to UE2 attributive eNBs 2 is used for the discovery for the configuration information progress UE2 that D2D has found, if UE2 Signal quality can receive, then can carry out D2D Communication to eNB1 or eNB2 requests.

Specific embodiment 3：Server provides addressing information, and UE1 (is sought as UE, UE2 is found as discovery UE based on IP Location).

It is expected that the UE for carrying out D2D obtains opposite end UE addressing informations and interacted between the UE of D2D opposite ends is used for D2D Discovery relevant information process is as shown in Figure 6：

Each corresponding step of upper figure is described as follows：

Step 601：UE1 utilizes high-level signaling Procedure Acquisition UE2 IP address；

High-level signaling can be SIP signalings, and UE2 IP address is provided by sip server, and be transmitted to UE1.

Step 602：UE1 notifies its D2D opposite ends UE2 specified of eNB1 IP address；

UE1 can be expected that the IP address for carrying out D2D Discovery specified opposite end UE (UE2) passes through high-level signaling (such as Non-Access Stratum (Non Access Stratum, NAS) signaling) notifies the eNB1 of UE1 ownership.

Step 603：ENB1 determines that UE1 is used for D2D Discovery configuration information；

ENB1 determines that UE1 is used for D2D Discovery configuration information, such as what UE1 was sent is used for D2D Discovery The information such as the signal running time-frequency resource, MCS, the power that use.

Step 604：ENB1 sends D2D Discovery request messages to UE2；

ENB1 can be encapsulated as by D2D Discovery request messages and for D2D Discovery configuration information IP bags, IP bags destination address is UE2 IP address, and the IP bags then are transmitted into UE2 by IP routing mechanisms.If at UE2 In idle condition, the MME2 of UE2 ownership needs to send Paging triggering UE initiation service request Service request, so as to Receive the IP bags.

Step 605：UE2 carries out UE1 discovery；

UE2 carries out D2D Discovery according to the configuration information for D2D discovery included in IP to UE1.One Signal quality can receive between denier finds UE1 and UE2, then can notify network startup D2D Communication.

Explanation：It can also can also be used as by UE1 in the present embodiment and find UE, if UE1, which is used as, finds UE, then UE2 The eNB2 of ownership determines that UE2 is used for D2D Discovery configuration information, and then eNB2 notifies UE1 by IP bags, then UE1 D2D Discovery are carried out again.

Specific embodiment 4：

Similar to Example 3, difference is step 2-4, and other steps are identical.It is specific as follows：

Step 1：UE1 utilizes high-level signaling Procedure Acquisition UE2 IP address；

Step 2：D2D is set up in the eNB1 requests that UE1 first belongs to it.

Step 3：ENB1 is the relevant information that UE1 determines to find for D2D, and is notified to UE1.

Step 4：D2D discoveries relevant information is encapsulated as IP bags by UE1, and IP bags destination address is UE2 IP address, then will IP bags are sent to UE2 by network route.

Step 5：UE2 carries out UE1 discovery；

Explanation：It can also can also be used as by UE1 in the present embodiment and find UE, if UE1, which is used as, finds UE, then UE2 The eNB2 of ownership determines that UE2 is used for D2D Discovery configuration information, and then UE2 is used for D2D Discovery's by eNB2 Information configuration notifies UE1 to UE2, then UE2 by IP bags, and IP bags destination address is UE1 IP address, and then UE1 is carried out again D2D Discovery。

Referring to Fig. 7, a kind of user equipment (UE) provided in an embodiment of the present invention includes：

Addressing information acquiring unit 71, for when it is determined that needing to carry out D2D communications with the 2nd UE, the to be obtained from server Two UE addressing information；

D2D communication units 72, for the addressing information according to the 2nd UE, realization communicates with the D2D between the 2nd UE.

Preferably, during addressing information of the addressing information acquiring unit 71 for obtaining the 2nd UE from server, specifically For：When the server is service server, the Datagram request for obtaining the 2nd UE is sent to service server；Obtain Take the 2nd UE of service server return addressing information.

Preferably, the addressing information includes：International mobile subscriber identity IMSI or System Architecture Evolution are moved temporarily User identifies S-TMSI, and tracking area identification TAI；Or, the addressing information includes：IMSI or S-TMSI, and evolution Type Base Station Identification eNB ID or Cell Global Identity ECGI；Or, the addressing information includes：IMSI or S-TMSI, TAI, with And eNB ID or ECGI；Or, the addressing information includes：Global unique temporary identity GUTI.

Preferably, during addressing information of the addressing information acquiring unit 71 for obtaining the 2nd UE from server, specifically For：The 2nd UE addressing information is obtained from server by high-level signaling.

Preferably, the high-level signaling is SIP (Session Initiation Protocol) signaling, the server is sip server.

Preferably, the addressing information is IP address.

Referring to Fig. 8, a kind of communication system provided in an embodiment of the present invention includes：

At least two user equipment (UE)s (the first UE81 and the 2nd UE82) and server 83；Wherein,

The server 83 is used to notify the 2nd UE82 addressing information to the first UE81；

First UE81 is used to when it is determined that needing to carry out D2D communications with the 2nd UE82, obtain the 2nd UE's from server 83 Addressing information；According to the 2nd UE82 addressing information, realization communicates with the D2D between the 2nd UE.

Preferably, the server 83 is service server.

Preferably, the service server is additionally operable to UE by supporting D2D communication functions in attaching process or startup The addressing information that UE is reported is obtained during D2D communication functions, or the inquiry based on service server obtains the addressing letter that UE is reported Breath.

Referring to Fig. 9, preferably, the system also includes the eNB84 for serving the first UE；First UE81 is used for according to second UE82 addressing information, when realization communicates with the D2D between the 2nd UE, specifically for：To the evolved base for serving the first UE The eNB that stands sends the request message that D2D communications are carried out with the 2nd UE, wherein carrying the 2nd UE addressing information；Serve the first UE ENB84 be used for determine the first UE be used for D2D find configuration information；The first UE is used for according to the 2nd UE addressing information The configuration information and the request message that D2D has found are sent to the 2nd UE；2nd UE82 is used to be found for D2D according to the first UE Configuration information, carry out the first UE discovery, when the first UE signal quality meets condition, according to the first UE addressing information The response message that the first UE and the 2nd UE carries out D2D communications is replied to the first UE or the eNB for serving the first UE.

Preferably, the eNB84 for serving the first UE81 is used to the first UE is used for into D2D according to the 2nd UE82 addressing information It was found that configuration information and the request message when being sent to two UE82, specifically for：When the eNB84 roots for serving the first UE When determining that this eNB serves two UE according to the 2nd UE addressing information, the request message is sent to the 2nd UE；Wherein carry First UE is used for the configuration information that D2D has found.

Referring to Figure 10, preferably, the system also includes serving the first UE MME85 and serves the 2nd UE eNB86； Serving the first UE eNB84 is used to the first UE81 is used for into the configuration information that D2D has found according to the 2nd UE82 addressing information When being sent to two UE with the request message, specifically for：When serving the first UE eNB according to the 2nd UE addressing information When determining that this eNB does not serve two UE, the eNB for serving the first UE sends D2D discovery requests to the MME for serving the first UE Message, wherein carrying the first UE is used for configuration information, the first UE addressing information and the 2nd UE that D2D has found addressing information； Serving the first UE MME85 is used to determine that this MME serves the 2nd UE；According to the 2nd UE addressing information, it is determined that serving 2nd UE eNB86；The request message that the first UE and the 2nd UE carries out D2D communications is sent to the eNB for serving the 2nd UE, wherein Carrying the first UE is used for the configuration information of D2D discoveries and the first UE addressing information；Serving the 2nd UE eNB86 is used for the Two UE forward the request message of the first UE and the 2nd UE progress D2D communications.

Referring to Figure 11, preferably, the system also include serve the first UE MME85, serve the 2nd UE MME87 and Serve the 2nd UE eNB86；The eNB84 for serving the first UE determines this eNB for working as according to the 2nd UE82 addressing information When not serving two UE, the eNB84 for serving the first UE sends D2D discovery request messages to the MME85 for serving the first UE, Wherein carrying the first UE is used for configuration information, the first UE addressing information and the 2nd UE that D2D has found addressing information；Serve First UE MME85 is according to the 2nd UE addressing information, it is determined that serving the 2nd UE MME；To the MME87 for serving the 2nd UE D2D is forwarded to find request message；The 2nd UE MME87 is served according to the 2nd UE addressing information, it is determined that serving the 2nd UE ENB86；The request message that the first UE and the 2nd UE carries out D2D communications is sent to the eNB86 for serving the 2nd UE, wherein carrying First UE is used for the configuration information of D2D discoveries and the first UE addressing information；Serving the 2nd UE eNB86 is used for the 2nd UE The first UE and the 2nd UE is forwarded to carry out the request message of D2D communications.

As shown in figure 11, preferably, the system also includes the eNB84 for serving the first UE, serve the 2nd UE's ENB86, serves the first UE MME85 and serves the 2nd UE MME87；First UE81 is used for the addressing according to the 2nd UE82 Information, when realization communicates with the D2D between the 2nd UE, specifically for：To serve the first UE evolved base station eNB send with 2nd UE carries out the request message of D2D communications, wherein carrying the 2nd UE addressing information；Serving the first UE eNB84 is used for When it is determined that this eNB does not serve two UE, send D2D to the MME for serving the first UE and find request message, wherein carrying the The addressing information of one UE addressing information and the 2nd UE；Serving the first UE MME85 is used for the addressing information according to the 2nd UE, It is determined that serving the 2nd UE MME；When it is determined that this MME does not serve two UE, the first UE MME is served to serving Two UE MME forwardings D2D has found request message；Serving the 2nd UE MME87 is used for the addressing information according to the 2nd UE, it is determined that Serve the 2nd UE eNB；The request message that the first UE and the 2nd UE carries out D2D communications is sent to the eNB for serving the 2nd UE, Wherein carry the first UE addressing information；Serving the 2nd UE eNB86 is used to determine that the 2nd UE matches somebody with somebody confidence for what D2D had found Breath；The configuration information for D2D discoveries is sent to the 2nd UE, and, used according to the first UE addressing information by described The first UE is sent in the D2D configuration informations found；First UE81 is additionally operable to match somebody with somebody confidence for what D2D had found according to the first UE Breath, carries out the 2nd UE discovery, when the 2nd UE signal quality meets condition, to the eNB for serving the first UE or serves 2nd UE eNB requests carry out D2D communications.

Preferably, when the eNB84 for serving the first UE determines that this eNB serves two UE, serving the first UE eNB Directly determine and send configuration informations of the first UE for D2D discoveries to the first UE and the 2nd UE.

Preferably, when the MME85 for serving the first UE determines that this MME serves two UE, serving the first UE MME The request message that the first UE and the 2nd UE carries out D2D communications directly is sent to the eNB for serving the 2nd UE, wherein carrying the first UE Addressing information.

Preferably, during addressing informations of the first UE81 for obtaining the 2nd UE82 from server, specifically for：Pass through high level Signaling obtains the 2nd UE addressing information from server 83.

Preferably, the high-level signaling is SIP (Session Initiation Protocol) signaling, the server 83 is sip server.

Preferably, the addressing information is IP address.

Preferably, the system also includes：Serve the first UE eNB84；First UE81 is used for seeking according to the 2nd UE82 Location information, when realization communicates with the D2D between the 2nd UE, specifically for：Sent out to the evolved base station eNB84 for serving the first UE The request message that D2D communications are carried out with the 2nd UE is sent, wherein carrying the 2nd UE IP address；The eNB84 for serving the first UE is used In it is determined that the first UE is used for the configuration information that D2D has found；The configuration information for D2D discoveries is sent to the first UE81, And, serve the first UE eNB84 is used for the configuration information transmission that D2D has found according to the 2nd UE82 IP address by the first UE To the 2nd UE82；2nd UE82 is used to be used for the configuration information that D2D has found according to the first UE, carries out the first UE81 discovery, when When first UE signal quality meets condition, D2D communications are carried out to network side request.

Preferably, the system also includes：Serve the first UE eNB84；First UE81 is used for seeking according to the 2nd UE82 Location information, when realization communicates with the D2D between the 2nd UE, specifically for：Sent to the evolved base station eNB for serving the first UE The request message of D2D communications is carried out with the 2nd UE；Serving the first UE eNB84 is used to determine that the first UE is used for what D2D had found Configuration information；The configuration information for D2D discoveries is sent to the first UE；First UE81 is additionally operable to be used for D2D by described It was found that configuration information be encapsulated as IP bags, IP bags are addressed by the 2nd UE IP address, the IP bags are sent to second UE；2nd UE82 is used to be used for the configuration information that D2D has found according to the first UE, the first UE discovery is carried out, when the first UE letter When number quality meets condition, D2D communications are carried out to network side request.

In summary, in the present invention, UE obtains designated terminal that it expects to carry out D2D discoveries/communication from network side (can be with One or more terminal) addressing information, be then based on the addressing information in the D2D opposite ends of D2D discoveries/communication to be carried out Between the interaction configuration information related for signal specific that D2D has found, to realize D2D discoveries/communication between specified user.

It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code The shape for the computer program product that usable storage medium is implemented on (including but is not limited to magnetic disk storage and optical memory etc.) Formula.

The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.

These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.

Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these changes and modification.

Claims

1. a kind of communication means, it is characterised in that this method includes：

First user equipment (UE) obtains the 2nd UE addressing letter from server when it is determined that needing to carry out D2D communications with the 2nd UE Breath；

First UE is realized and communicated with the D2D between the 2nd UE according to the 2nd UE addressing information；

When the server is service server, the addressing information that the first UE obtains the 2nd UE from server includes：

First UE sends the Datagram request for obtaining the 2nd UE to service server；

First UE obtains the addressing information for the 2nd UE that service server is returned；

The service server is by supporting the UE of D2D communication functions to be obtained in attaching process or startup D2D communication functions The addressing information that UE is reported, or the inquiry based on service server obtain the addressing information that UE is reported；

The addressing information includes：

International mobile subscriber identity IMSI or System Architecture Evolution Temporary Mobile Subscriber Identity S-TMSI, and tracking area identification TAI；Or,

The addressing information includes：IMSI or S-TMSI, and evolved base station mark eNB ID or Cell Global Identity ECGI； Or,

The addressing information includes：IMSI or S-TMSI, TAI, and eNB ID or ECGI；Or,

The addressing information includes：Global unique temporary identity GUTI；

Wherein,

First UE communicates according to the 2nd UE addressing information, realization with the D2D between the 2nd UE, including：

First UE sends the request message that D2D communications are carried out with the 2nd UE to the evolved base station eNB for serving the first UE, wherein Carry the 2nd UE addressing information；

The eNB for serving the first UE determines that the first UE is used for the configuration information that D2D has found；

Serve the first UE eNB is used for configuration information that D2D has found and described according to the 2nd UE addressing information by the first UE Request message is sent to the 2nd UE；

2nd UE is used for the configuration information that D2D has found according to the first UE, the first UE discovery is carried out, when the first UE signal quality When meeting condition, according to the first UE addressing information to the first UE or serve the first UE eNB reply the first UE and the 2nd UE Carry out the response message of D2D communications；

Or,

When the eNB for serving the first UE determines that this eNB does not serve two UE, the first UE eNB is served to serving One UE MME sends D2D and finds request message, wherein carrying the first UE addressing information and the 2nd UE addressing information；

The first UE MME is served according to the 2nd UE addressing information, it is determined that serving the 2nd UE MME；

When the MME for serving the first UE determines that this MME does not serve two UE, the first UE MME is served to serving Two UE MME forwardings D2D has found request message；

The 2nd UE MME is served according to the 2nd UE addressing information, it is determined that serving the 2nd UE eNB；

The MME for serving the 2nd UE disappears to the eNB for serving the 2nd UE requests for sending the first UE and the 2nd UE progress D2D communications Breath, wherein carrying the first UE addressing information；

The eNB for serving the 2nd UE determines that the 2nd UE is used for the configuration information that D2D has found；

The configuration information for D2D discoveries is sent to the 2nd UE by the eNB for serving the 2nd UE, and, according to the first UE Addressing information by it is described for D2D find configuration information be sent to the first UE；

First UE is used for the configuration information that D2D has found according to the first UE, the 2nd UE discovery is carried out, when the 2nd UE signal quality When meeting condition, D2D communications are carried out to the eNB for serving the first UE or eNB for serving the 2nd UE requests；

When the first UE addressing informations for obtaining the 2nd UE from server include：

First UE obtains the 2nd UE addressing information by high-level signaling from server；

The high-level signaling is SIP (Session Initiation Protocol) signaling, and the server is sip server；

The addressing information is IP address；

First UE sends the request message that D2D communications are carried out with the 2nd UE to the evolved base station eNB for serving the first UE, wherein Carry the 2nd UE IP address；

The configuration information for D2D discoveries is sent to the first UE by the eNB for serving the first UE, and, serve first The first UE configuration informations for being used for D2D discoveries are sent to the 2nd UE by UE eNB according to the 2nd UE IP address；

2nd UE is used for the configuration information that D2D has found according to the first UE, the first UE discovery is carried out, when the first UE signal quality When meeting condition, D2D communications are carried out to network side request.

2. according to the method described in claim 1, it is characterised in that the eNB for serving the first UE believes according to the 2nd UE addressing Cease and the first UE configuration informations and the request message for being used for D2D discoveries is sent to the 2nd UE, including：

When the eNB for serving the first UE determines that this eNB serves two UE according to the 2nd UE addressing information, by the request Message is sent to the 2nd UE；Wherein carrying the first UE is used for the configuration information that D2D has found.

3. according to the method described in claim 1, it is characterised in that the eNB for serving the first UE believes according to the 2nd UE addressing Cease and the first UE configuration informations and the request message for being used for D2D discoveries is sent to the 2nd UE, including：

When the eNB for serving the first UE determines that this eNB does not serve two UE according to the 2nd UE addressing information, is served One UE eNB sends D2D to the MME for serving the first UE and finds request message, wherein carrying the first UE is used for matching somebody with somebody for D2D discoveries The addressing information of confidence breath, the first UE addressing information and the 2nd UE；

The MME for serving the first UE determines that this MME serves the 2nd UE；

The first UE MME is served according to the 2nd UE addressing information, it is determined that serving the 2nd UE eNB；

The MME for serving the first UE disappears to the eNB for serving the 2nd UE requests for sending the first UE and the 2nd UE progress D2D communications Breath, wherein carrying the first UE is used for the configuration information of D2D discoveries and the first UE addressing information；

Serve the request message that the 2nd UE eNB forwards the first UE and the 2nd UE to carry out D2D communications to the 2nd UE.

4. according to the method described in claim 1, it is characterised in that the eNB for serving the first UE believes according to the 2nd UE addressing Cease and the first UE configuration informations and the request message for being used for D2D discoveries is sent to the 2nd UE, including：

The MME for serving the first UE forwards D2D to find request message to the MME for serving the 2nd UE；

The MME for serving the 2nd UE disappears to the eNB for serving the 2nd UE requests for sending the first UE and the 2nd UE progress D2D communications Breath, wherein carrying the first UE is used for the configuration information of D2D discoveries and the first UE addressing information；

5. according to the method described in claim 1, it is characterised in that when the eNB for serving the first UE determines that this eNB serves During two UE, the eNB for serving the first UE is directly determined and is sent configurations of the first UE for D2D discoveries to the first UE and the 2nd UE Information.

6. method according to claim 5, it is characterised in that when the MME for serving the first UE determines that this MME serves During two UE, the MME for serving the first UE directly sends the first UE and the 2nd UE progress D2D communications to the eNB for serving the 2nd UE Request message, wherein carry the first UE addressing information.

7. according to the method described in claim 1, it is characterised in that the first UE is realized and the according to the 2nd UE addressing information D2D communications between two UE, including：

First UE sends the request message that D2D communications are carried out with the 2nd UE to the evolved base station eNB for serving the first UE；

The configuration information for D2D discoveries is sent to the first UE by the eNB for serving the first UE；

The configuration information for D2D discoveries is encapsulated as IP bags by the first UE, and IP bags are carried out by the 2nd UE IP address Addressing, the 2nd UE is sent to by the IP bags；

8. a kind of user equipment (UE), it is characterised in that the equipment includes：

Addressing information acquiring unit, for when it is determined that needing to carry out D2D communications with the 2nd UE, obtaining the 2nd UE's from server Addressing information；

D2D communication units, for the addressing information according to the 2nd UE, realization communicates with the D2D between the 2nd UE；

The addressing information acquiring unit be used for from server obtain the 2nd UE addressing information when, specifically for：

When the server is service server, the Datagram request for obtaining the 2nd UE is sent to service server；

Obtain the addressing information for the 2nd UE that service server is returned；

The addressing information includes：

The addressing information includes：Global unique temporary identity GUTI；

Or,

The 2nd UE addressing information is obtained from server by high-level signaling；

The addressing information is IP address；

9. a kind of communication system, it is characterised in that the system includes：

At least two user equipment (UE)s and server；Wherein,

First UE is used to when it is determined that needing to carry out D2D communications with the 2nd UE, the 2nd UE addressing information is obtained from server；Root According to the 2nd UE addressing information, realization communicates with the D2D between the 2nd UE；

The server is service server；

The service server is additionally operable to by supporting the UE of D2D communication functions in attaching process or starting D2D communication functions When obtain the addressing informations that report of UE, or the inquiry based on service server obtains the addressing information that UE is reported；

The addressing information includes：

The addressing information includes：Global unique temporary identity GUTI；

The system also includes the eNB for serving the first UE；

First UE is used for the addressing information according to the 2nd UE, when realization communicates with the D2D between the 2nd UE, specifically for：To clothes It is engaged in sending the request message with the 2nd UE progress D2D communications in the first UE evolved base station eNB, wherein carrying seeking for the 2nd UE Location information；

Serving the first UE eNB is used to determine that the first UE is used for the configuration information that D2D has found；According to the 2nd UE addressing information The first UE configuration informations and the request message for being used for D2D discoveries is sent to the 2nd UE；

2nd UE is used to be used for the configuration information that D2D has found according to the first UE, the first UE discovery is carried out, when the first UE signal When quality meets condition, according to the first UE addressing information is to the first UE or serves the first UE eNB and replys the first UE and the Two UE carry out the response message of D2D communications；

Or,

First UE be used for from server obtain the 2nd UE addressing information when, specifically for：Obtained by high-level signaling from server Take the 2nd UE addressing information；

The addressing information is IP address；

The system also includes：Serve the first UE eNB；

First UE is used for the addressing information according to the 2nd UE, when realization communicates with the D2D between the 2nd UE, specifically for：To clothes It is engaged in sending the request message with the 2nd UE progress D2D communications in the first UE evolved base station eNB, wherein carrying the 2nd UE IP Address；

Serving the first UE eNB is used to determine that the first UE is used for the configuration information that D2D has found；It is used for what D2D had found by described Configuration information is sent to the first UE, and, serve the first UE eNB is used for D2D according to the 2nd UE IP address by the first UE It was found that configuration information be sent to the 2nd UE；

2nd UE is used to be used for the configuration information that D2D has found according to the first UE, the first UE discovery is carried out, when the first UE signal When quality meets condition, D2D communications are carried out to network side request.

10. system according to claim 9, it is characterised in that serving the first UE eNB is used for seeking according to the 2nd UE When the first UE configuration informations and the request message for being used for D2D discoveries is sent to two UE by location information, specifically for：

11. system according to claim 9, it is characterised in that the system also includes MME and the service for serving the first UE In the 2nd UE eNB；

Serve the first UE eNB be used for according to the 2nd UE addressing information by the first UE be used for configuration information that D2D has found and When the request message is sent to two UE, specifically for：When the eNB for serving the first UE is true according to the 2nd UE addressing information When this fixed eNB does not serve two UE, the eNB for serving the first UE has found that request disappears to the MME transmissions D2D for serving the first UE Breath, wherein carrying the first UE is used for configuration information, the first UE addressing information and the 2nd UE that D2D has found addressing information；

Serving the first UE MME is used to determine that this MME serves the 2nd UE；According to the 2nd UE addressing information, it is determined that service In the 2nd UE eNB；The request message that the first UE and the 2nd UE carries out D2D communications is sent to the eNB for serving the 2nd UE, wherein Carrying the first UE is used for the configuration information of D2D discoveries and the first UE addressing information；

Serve the request message that the 2nd UE eNB is used to forward the first UE and the 2nd UE to carry out D2D communications to the 2nd UE.

12. system according to claim 9, it is characterised in that the system also includes MME, the service for serving the first UE In the 2nd UE MME and the eNB for serving the 2nd UE；

Serving the first UE eNB is used for when determining that this eNB does not serve two UE according to the 2nd UE addressing information, service D2D is sent to the MME for serving the first UE in the first UE eNB and find request message, found wherein carrying the first UE for D2D Configuration information, the first UE addressing information and the 2nd UE addressing information；

The first UE MME is served according to the 2nd UE addressing information, it is determined that serving the 2nd UE MME；To serving second UE MME forwardings D2D has found request message；

The 2nd UE MME is served according to the 2nd UE addressing information, it is determined that serving the 2nd UE eNB；To serving second UE eNB sends the request message that the first UE and the 2nd UE carries out D2D communications, wherein carrying the first UE is used for matching somebody with somebody for D2D discoveries Confidence ceases the addressing information with the first UE；

13. system according to claim 9, it is characterised in that the system also includes the eNB for serving the first UE, service In the 2nd UE eNB, serve the first UE MME and serve the 2nd UE MME；

Serving the first UE eNB is used for when it is determined that this eNB does not serve two UE, is sent to the MME for serving the first UE D2D has found request message, wherein carrying the first UE addressing information and the 2nd UE addressing information；

Serving the first UE MME is used for the addressing information according to the 2nd UE, it is determined that serving the 2nd UE MME；When it is determined that originally When MME does not serve two UE, the MME for serving the first UE forwards D2D to find request message to the MME for serving the 2nd UE；

Serving the 2nd UE MME is used for the addressing information according to the 2nd UE, it is determined that serving the 2nd UE eNB；To serving 2nd UE eNB sends the request message that the first UE and the 2nd UE carries out D2D communications, wherein carrying the first UE addressing information；

Serving the 2nd UE eNB is used to determine that the 2nd UE is used for the configuration information that D2D has found；It is used for what D2D had found by described Configuration information is sent to the 2nd UE, and, sent according to the first UE addressing information by described for the D2D configuration informations found To the first UE；

First UE is additionally operable to be used for the configuration information that D2D has found according to the first UE, the 2nd UE discovery is carried out, when the 2nd UE letter When number quality meets condition, D2D communications are carried out to the eNB for serving the first UE or eNB for serving the 2nd UE requests.

14. system according to claim 13, it is characterised in that when the eNB for serving the first UE determines that this eNB is served During two UE, the eNB for serving the first UE is directly determined and is sent the first UE for matching somebody with somebody that D2D has found to the first UE and the 2nd UE Confidence ceases.

15. system according to claim 13, it is characterised in that when the MME for serving the first UE determines that this MME is served During two UE, the MME for serving the first UE directly leads to eNB the first UE of transmission and the 2nd UE progress D2D for serving the 2nd UE The request message of letter, wherein carrying the first UE addressing information.

16. system according to claim 14, it is characterised in that the system also includes：Serve the first UE eNB；

First UE is used for the addressing information according to the 2nd UE, when realization communicates with the D2D between the 2nd UE, specifically for：To clothes It is engaged in sending the request message with the 2nd UE progress D2D communications in the first UE evolved base station eNB；

Serving the first UE eNB is used to determine that the first UE is used for the configuration information that D2D has found；It is used for what D2D had found by described Configuration information is sent to the first UE；

First UE is additionally operable to the configuration information for D2D discoveries being encapsulated as IP bags, by the 2nd UE IP address to IP Bag is addressed, the IP bags are sent into the 2nd UE；