CN108055705A - Cut-in method, the apparatus and system of terminal - Google Patents

Abstract

Cut-in method, apparatus and system an embodiment of the present invention provides terminal, wherein, the cut-in method includes：Terminal network to be accessed obtains the information that the terminal supports D2D communications；When D2D described in the network support is communicated, the network receives the D2D communication requests that the terminal is sent；The network carries out D2D access authentications according to the D2D communication requests to the terminal.The embodiment of the present invention solves the problems, such as that the direct-connected mechanics of communication in correlation technique constitutes a degree of interference to the frequency spectrum resource of operator, so as to which operator can be communicated by the D2D for setting D2D registrar to participate in and control two D2D terminals to carry out.

Description

Cut-in method, the apparatus and system of terminal

Technical field

The present invention relates to the communications field, in particular to a kind of cut-in method of terminal, apparatus and system.

Background technology

In mobile communications, communication can be happened at user equipment (User Equipment, referred to as UE) (or also referred to as For terminal or user terminal) between application server (Application Server, referred to as AS), it is also possible to it is happened at Between two user equipmenies, the communication between two user equipmenies may pass through AS transfers, it is also possible to two user equipmenies it Between carried out by IP traffic end to end.

In mobile communications, grouping (Packet Service, referred to as PS) network provides IP-based data communication. The IP address of UE is responsible for distribution by the IP allocation entities in network, and all IP traffics of UE communication are required to by the IP points With entity.

Fig. 1 is according to the configuration diagram of UE access under correlation technique to packet domain, as shown in Figure 1, the structure includes： UE, UMTS Terrestrial radio access network (UMTS Terrestrial Radio Access Network, referred to as UTRAN), evolution Land radio access web (Evolved UMTS are referred to as E-UTRAN), Serving GPRS Support Node (Serving GPRS Supporting Node, referred to as SGSN), mobility management entity (Mobile Management Entity, abbreviation MME), Attaching position register (Home Location Register, referred to as HLR)/home subscriber server (Home Subscriber Server, referred to as HSS), gateway (Serving Gateway, abbreviation SGW), Packet Data Network's network diagram Close (Packet Data Network Gateway, referred to as PGW), Gateway GPRS Support Node (Gateway GPRS Supporting Node, referred to as GGSN), AS.Wherein, PGW, GGSN are respectively the network under E-UTRAN, UTRAN/GERAN GGSN, PGW, can be referred to as public data network network diagram by agreement (Internet Protocol, referred to as IP) allocation entity It closes.

UE can be linked into core net by UMTS, E-UTRAN, after being allocated IP address, could realize and application service The IP of device AS or other-end is communicated.In communication process, IP traffic is forwarded to public data network network diagram behind base station It closes (GGSN/PGW), AS or destination UE is then sent to according to IP routing rules by GGSN/PGW again, wherein, UE to base station, Base station is not based on the progress of IP routing rules to the communication between public data network gateway (GGSN/PGW), but base It is carried out in the route technology of bottom link.In whole process, base station does not perceive IP layers of information, for example, base station is not known The information such as IP address, the port of road UE.

Under above-mentioned scene, even if two UE realize equity (Peer-to-Peer, abbreviation under same base station by IP For P2P) communication, IP data packets must also be travelled back across to be re-send to after the public data network gateway (GGSN/PGW) on upper strata Destination UE, especially when public data network gateway (GGSN/PGW) is located at home network, and two UE mutually communicated are all located at During visit net, media routing phenomenon is especially prominent in such a scenario.Fig. 2 describes the detour phenomenon of above-mentioned IP traffic, such as Shown in Fig. 2, the communication link between UE1 and UE2 is：UE1 → eNodeB → SGW → PGW → (forwarding network) → SGW → eNodeB→UE2.Clearly as can be seen that the IP traffic of UE1 to UE2 is gone out from same base station eNodeB, detour To public data network gateway, it is returned to after a great circle on the eNodeB.

The phenomenon that above-mentioned IP traffic detour, as mobile broadband process is more and more prominent.In mobile network's evolution, Mobile network increasingly shows the characteristic of broadband network.With smart mobile phone extensive use, transmission media in a mobile network Data flow is more and more frequent.It is especially prominent, as social networking application and location-based communication applications become more and more popular, same Data traffic in one region (under same base station, in the range of adjacent base station) is increasing.These data traffics are required to The public data network gateway (GGSN/PGW) of core net is travelled back across, considerably increases return bandwidth requirement, increases IP communications Time delay, also increase the burden of public data network gateway (GGSN/PGW).Also, as mobile broadbandization is more and more deeper Enter, growing IP traffic amount also proposed the public data network gateway (GGSN/PGW) of core net higher want It asks.

In order to tackle data traffic increased requirement, operator must increase more public data network gateway (GGSN/ PGW downward trend is but presented in) equipment, still, the monthly charge of each user, and such case is but also investment and the receipts of operator Benefit is more and more unbalance.

For the mutual communication of the terminal room in close region, industry proposes straight between a kind of adjacent terminal end of similar WIFI The technology of connection news, two terminals physically closed on (such as：In the range of 1Km) using operator's frequency spectrum resource, pass through The burst technology for increasing power and similar WIFI broadcast mechanisms is adjusted to realize and mutually find, and establishes point-to-point direct-connected nothing Line communicates, as shown in Fig. 2, being exactly the direct-connected communication link (thicker dotted line in figure) between UE1 and UE2.It is but above-mentioned direct-connected The use of mechanics of communication brings following negative effect to operator：One：Since the direct-connected communication of terminal room make use of operation Business's frequency spectrum resource, and using the burst technology for increasing power is adjusted, so as to be constituted to a certain degree to the frequency spectrum resource of operator Interference；Secondly：Operator can not detect and count the direct-connected communication of above-mentioned terminal, above-mentioned direct-connected logical so as to prevent and improve Negative effect caused by news technology.

To sum up, in the direct-connected mechanics of communication of correlation technique, due to that can not be joined using operator's frequency spectrum resource and operator With wherein and assigning enough control abilities, cause operator that can not prevent and improve shadow caused by above-mentioned direct-connected mechanics of communication It rings, so as to which the frequency spectrum resource to operator constitutes a degree of interference.

The content of the invention

An embodiment of the present invention provides a kind of cut-in method of terminal, apparatus and system, at least to solve in correlation technique Direct-connected communication skill the problem of a degree of interference is constituted to the frequency spectrum resource of operator.

An embodiment of the present invention provides a kind of cut-in method of terminal, including：Terminal network to be accessed obtains the terminal Support the information of D2D communications；When network support D2D is communicated, network receives the D2D communication requests that terminal is sent；Network according to D2D communication requests carry out D2D access authentications to terminal.

An embodiment of the present invention provides a kind of cut-in method of terminal, including：Terminal obtains terminal network to be accessed Support the information of D2D communications；When network support D2D is communicated, terminal sends D2D communication requests to network, wherein, D2D communications Request carries out D2D access authentications for triggering network to terminal.

An embodiment of the present invention provides a kind of access device of terminal, which is applied to network, including：Acquisition module, For obtaining the information that the terminal to be registered to network supports D2D communications；Receiving module, in network support D2D

An embodiment of the present invention provides a kind of access device of terminal, which is applied to terminal, including：Obtain mould Block, for obtaining the information of terminal network support D2D communications to be accessed；Sending module, for supporting D2D communications in terminal When, D2D communication requests are sent to network, wherein, D2D communication requests carry out D2D access authentications for triggering network to terminal.

An embodiment of the present invention provides a kind of access system of terminal, which includes：It is applied to according to any of the above-described The access device of the terminal of network and according to any of the above-described be applied to terminal terminal access device.

An embodiment of the present invention provides a kind of storage medium, the storage medium includes the program of storage, wherein, the journey The cut-in method of the terminal is performed during sort run.

An embodiment of the present invention provides a kind of processor, the processor is used for operation program, wherein, described program operation The cut-in method of terminal described in Shi Zhihang.

In embodiments of the present invention, solve in correlation technique in direct-connected mechanics of communication, due to being provided using operator's frequency spectrum Source and operator can not participate and assign enough control abilities, cause operator can not prevent and improve it is above-mentioned direct-connected logical It is influenced caused by news technology, so that the problem of frequency spectrum resource to operator constitutes a degree of interference, has reached drop The effect of the interference of the low frequency spectrum resource to operator.

Description of the drawings

Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description does not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：

Fig. 1 is the configuration diagram that packet domain is linked into according to the D2D terminals of correlation technique；

Fig. 2 is under the same base station according to correlation technique/adjacent base station under difference D2D terminal rooms carry out IP data communications Schematic diagram；

Fig. 3 is the flow chart of the register method of D2D terminals according to embodiments of the present invention；

Fig. 4 is the flow chart of the discovery method of D2D terminals according to embodiments of the present invention；

Fig. 5 is the flow chart of the cut-in method of terminal according to embodiments of the present invention；

Fig. 6 is the flow chart of the cut-in method of another terminal according to embodiments of the present invention；

Fig. 7 is the structure diagram of the register device of D2D terminals according to embodiments of the present invention；

Fig. 8 is the structure diagram of the register device of D2D terminals according to the preferred embodiment of the invention；

Fig. 9 is the structure diagram of the discovery device of D2D terminals according to embodiments of the present invention；

Figure 10 is the structure diagram of determining module according to embodiments of the present invention；

Figure 11 is the structure diagram of the discovery device of D2D terminals according to the preferred embodiment of the invention；

Figure 12 is the structure diagram of the discovery device of another kind D2D terminals according to the preferred embodiment of the invention；

Figure 13 is the structure diagram of the discovery device of another D2D terminal according to the preferred embodiment of the invention；

Figure 14 is the structure diagram of the access device of the terminal applied to network according to embodiments of the present invention；

Figure 15 is the structure diagram of the access device of the terminal applied to terminal according to embodiments of the present invention；

Figure 16 is the structural frames of the discovery device of the D2D terminals according to the preferred embodiment of the invention applied to D2D terminals Figure；

Figure 17 is the configuration diagram that D2D registrar is introduced according to embodiments of the present invention one network；

Figure 18 be according to embodiments of the present invention one D2D terminals to wireless base station initiate D2D registration requests, wireless base station will The D2D registration requests that D2D terminals are sent are transmitted to the flow diagram of D2D registrar；

Figure 19 be according to embodiments of the present invention one D2D terminals to core network mobility management element initiate D2D registration please It asks, the flow that the D2D registration requests that D2D terminals are sent are transmitted to D2D registrar by core network mobility management element is shown It is intended to；

Figure 20 is that according to embodiments of the present invention two network provides the information of D2D registrar to D2D terminals, and D2D is whole The flow diagram of D2D registration requests is directly initiated to D2D registrar in end；

Figure 21 is that according to embodiments of the present invention three D2D registrar subscribes to the current location of D2D terminals from eNodeB Information, so that it is determined that the flow diagram for the D2D terminals closed on；

Figure 22 is that according to embodiments of the present invention three D2D registrar subscribes to the present bit confidence of D2D terminals from MME Breath, so that it is determined that the flow diagram for the D2D terminals closed on；

Figure 23 is that according to embodiments of the present invention three D2D registrar subscribes to the present bit confidence of D2D terminals from LCS Breath, so that it is determined that the flow diagram for the D2D terminals closed on；

Figure 24 is that according to embodiments of the present invention four network and terminal room interact respective D2D communications and support information, and is held The flow diagram of the access authentication of row terminal；

Figure 25 is that according to embodiments of the present invention four terminal obtains the D2D communication support information of network by Cell Broadcast CB Flow diagram；

Figure 26 is that according to embodiments of the present invention four terminal obtains the D2D communication branch of network by receiving attachment response message Hold the flow diagram of information；

Figure 27 be according to embodiments of the present invention four terminal initiate D2D communication requests when, Radio Access Network is to terminal Carry out the flow diagram of D2D access authentications；

Figure 28 be according to embodiments of the present invention four terminal initiate D2D communication requests when, core net to terminal carry out D2D The flow diagram of access authentication.

Specific embodiment

Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.

A kind of register method of D2D terminals is present embodiments provided, Fig. 3 is D2D terminals according to embodiments of the present invention The flow chart of register method, as shown in figure 3, the register method of the D2D terminals includes step S302 to step S304.

Step S302：D2D registrar receives the D2D registration requests of D2D terminals transmission by network entity.

Step S304：D2D registrar performs the registration operation of D2D terminals.

By above-mentioned steps, before two D2D terminals carry out D2D communications, D2D terminals are first in D2D registrar On registered, after succeeding in registration, two D2D terminals are possible to realize mutual discovery, and can further attempt to establish D2D Communication, realizing D2D registrar can participate in the D2D communications that two D2D terminals carry out, by D2D terminals The process of authentication registration controls the D2D communications that D2D terminals carry out to realize, so as to which operator can be by setting D2D Registrar and then the D2D communications for participating in and controlling two D2D terminals to carry out, realize the control to the direct-connected communication of terminal, drop The use of the low direct-connected communication modes of uncontrolled terminal, and then operator can be based on carrier network and provide direct-connected communicating terminal Between it is mutual find, the controls such as access authentication before direct-connected communication is initiated, can solve in correlation technique due to utilizing operator Frequency spectrum resource and operator can not participate and assign enough control abilities, cause operator can not prevent and improve it is above-mentioned It is influenced caused by direct-connected mechanics of communication, so that the problem of frequency spectrum resource to operator constitutes a degree of interference, reaches The effect for lowering the interference to the frequency spectrum resource of operator is arrived.

Preferably, above-mentioned network entity can be wireless base system, wherein, when D2D terminals are wireless into EUTRAN When base station system sends D2D registration requests, wireless base system can include：Base station eNodeB；When D2D terminals are into UTRAN Wireless base system send D2D registration requests when, wireless base system can include：Base station NodeB and wireless network management Device RNC, D2D registration request are carried in RRC information.Under the preferred embodiment, network entity can when being wireless base system To be handled according to different situations registration request, the flexibility of login request message processing is improved.

Preferably, network entity can be core network mobility management element, wherein, when D2D terminals are into EUTRAN When wireless base system sends D2D registration requests, core network mobility management element can include：Mobility management entity MME, When wireless base system of the D2D terminals into EUTRAN sends D2D registration requests, core network mobility management element can wrap It includes：SGSN, D2D registration request are carried in NAS message.Under the preferred embodiment, network entity is core network mobility pipe Registration request can be handled according to different situations when managing network element, improve the flexibility of login request message processing.

Preferably, when the D2D registration requests that D2D terminals are sent are sent to D2D registrar by network entity, network The access information carrying of D2D terminals is sent to D2D registrar by entity in D2D registration requests, wherein, D2D terminals Access information includes：The access mark of D2D terminals and the location information of D2D terminals.In the preferred embodiment, by connecing for terminal The location information of inlet identity and terminal is sent to D2D registrar by registration request, can so that D2D registrar can To be registered according to above- mentioned information to D2D, the load of Signalling exchange is reduced.

Preferably, D2D registration requests can include one below：The application layer identification of D2D terminals；The application of D2D terminals The service type of layer identification and D2D terminals.The application layer mark of D2D terminals is carried in registration request in the preferred embodiment Know；D2D terminals using layer identification and the service type of D2D terminals, can cause the D2D services for receiving the D2D registration requests Device accurately accesses D2D terminals.

Preferably, after D2D registrar performs the registration operation of D2D terminals, in the successful feelings of D2D endpoint registrations Under condition, D2D terminals enter D2D communication modes, wherein, D2D communication modes open D2D Communications services for D2D terminals, and enter and connect Connect state；In the case of the failure of D2D endpoint registrations, D2D terminals are released to the resource that D2D communication modes are prepared.The preferred reality It applies in mode, after D2D registrar performs registration operation to D2D terminals, whether is succeeded according to D2D endpoint registrations, performed Different operations.In the case of a hit, D2D terminals enter D2D communication modes；In the event of a failure, D2D terminals are released to The resource that D2D communication modes are prepared improves the resource utilization of system.

Preferably, after the failure of D2D endpoint registrations or going to succeed in registration, the register method of above-mentioned D2D terminals further includes： D2D terminals enter Idle state, i.e., after D2D terminals are released to the resource that D2D communication modes are prepared, if connected without other communications It connects, then UE can exit connected state, into Idle state.

Preferably, after D2D registrar receives the D2D registration requests that D2D terminals are sent by network entity, such as Fruit D2D terminals on D2D registrar when succeeding in registration, D2D registrar store D2D terminals registration context, Wherein, registering context includes one below：The access layer information of D2D terminals；The access layer information of D2D terminals and D2D terminals Application layer message.In the preferred embodiment, in the success of D2D endpoint registrations, D2D registrar storages include D2D The access layer information of terminal；The registration context of the access layer information of D2D terminals and the application layer message of D2D terminals so that D2D Registrar can provide the access layer information of D2D terminals and/or the application layer message of D2D terminals for the D2D subsequent communications, The load of signalling can be reduced.

A kind of discovery method of D2D terminals is present embodiments provided, as shown in figure 4, the discovery method of the D2D terminals includes Step S402 to step S404.

Step S402：D2D registrar receives the D2D terminals sent by D2D terminals forwarded by network entity and sends out Now ask.

Step S404：D2D terminals that D2D registrar determines to close on according to D2D terminal discovery requests, and will close on The information of D2D terminals returns to D2D terminals.

By above-mentioned steps, after succeeding in registration, D2D terminals send D2D terminal discovery requests to D2D registrar, It determines to go out and can carry out D2D communications with above-mentioned D2D terminals according to above-mentioned D2D terminals discovery request in D2D registrar The D2D terminals closed on when, above-mentioned D2D terminals then can carry out D2D communications with the D2D terminals for closing on of determining, and realize D2D registrar can be participated in the D2D communications that two D2D terminals carry out, and by the way that determine can be with above-mentioned D2D terminals It carries out the process of the D2D terminals closed on of D2D communications and the D2D communications that D2D terminals carry out is controlled to realize, so as to run Business can be communicated by the D2D for setting D2D registrar to participate in and control two D2D terminals to carry out, and can solve phase Due to that can not participate using operator's frequency spectrum resource and operator and assign enough control abilities in the technology of pass, cause to transport Battalion business can not prevent and improve to be influenced caused by above-mentioned direct-connected mechanics of communication, so as to which the frequency spectrum resource to operator constitutes one The problem of determining the interference of degree has achieved the effect that lower the interference to the frequency spectrum resource of operator.

Preferably, D2D registrar determines the terminal closed on according to D2D terminal discovery requests, and the D2D closed on is whole The information at end, which returns to D2D terminals, to be included：D2D registrar is obtained according to D2D terminals discovery request initiates D2D terminals hair The registration context for the D2D terminals now asked；D2D registrar determines the D2D closed on according to the registration context of D2D terminals Terminal, and the information for the D2D terminals closed on is returned into D2D terminals.In the preferred embodiment, D2D registrar can The registration context of the D2D terminals to be stored in the registration context and the D2D servers according to the D2D terminals got is true Surely the terminal closed on improves the reliability of definite D2D terminals.

Preferably, D2D registrar determines the D2D terminals closed on according to the registration context of D2D terminals, and will close on The information of D2D terminals return to D2D terminals and include：When carried in D2D terminal discovery requests default D2D service types or During D2D application layer identifications, D2D registrar determines the D2D terminals now closed on according to information group, and is closed on described The information of D2D return to the D2D terminals, wherein, described information group includes one below：The registration context of D2D terminals With default D2D service types；The registration context of D2D terminals and D2D application layer identifications.In the preferred embodiment, When default D2D service types or D2D application layer identifications are carried in D2D terminal discovery requests, which can be with Pass through D2D service types (or D2D applications layer identification), the registration context of the D2D terminals that get and the D2D terminals of storage Context determines D2D terminals, and which improves the efficiency of definite D2D terminals.

Preferably, the D2D terminals sent by D2D terminals the hair forwarded by network entity is received in D2D registrar Before now asking, above-mentioned D2D terminals find that method further includes：D2D terminals send D2D registration requests to network entity.This is preferably In embodiment, before the D2D terminal discovery requests for receiving by network entity forwarding in D2D registrar, including whole by D2D It holds to network entity and sends D2D registration requests, the load of information exchange can be reduced.

Preferably, after the success of D2D endpoint registrations, above-mentioned D2D terminals find that method further includes：D2D registrar The registration context of D2D terminals is stored, wherein, registration context includes one below：The access layer information of D2D terminals；D2D is whole The access layer information at end and the application layer message of D2D terminals.In the preferred embodiment, the storage of D2D registrar includes connecing Enter a layer information；The access layer information of D2D terminals and the application layer message of D2D terminals so that D2D servers in subsequent processing may be used Above- mentioned information to be used to register D2D terminals.

Preferably, after the registration context of D2D registrar storage D2D terminals, above-mentioned D2D terminals find method It further includes：In D2D registrar after the network inquiry of the D2D endpoint registrations or the location information of subscription D2D terminals, In the case that the position of D2D terminals changes, the position letter in the access layer information of D2D registrar update D2D terminals The location information after the variation for D2D terminals is ceased, improves the accuracy of the location information of D2D terminals.

Preferably, the network of registration includes one below：Wireless base system, core network mobility management element, service Mobile positioning center SMLC/E-SMLC, Gateway Mobile Location Center GMLC.

Preferably, network entity is wireless base system, wherein, when wireless base system of the D2D terminals into EUTRAN When sending D2D terminal discovery requests, wireless base system includes：Base station eNodeB；When wireless base of the D2D terminals into UTRAN When system of standing sends D2D terminal discovery requests, wireless base system includes：Base station NodeB and RNC, D2D terminal discovery request are taken Band is in wireless resource management RRC information.

Preferably, network entity is core network mobility management element, wherein, when core of the D2D terminals into EUTRAN When network mobility management element sends D2D terminal discovery requests, core network mobility management element includes：MME；When D2D terminals When core network mobility management element into UTRAN sends D2D terminal discovery requests, core network mobility management element bag It includes：SGSN, D2D terminal discovery request are carried in NAS message.

A kind of cut-in method of terminal is present embodiments provided, as shown in figure 5, the cut-in method of the terminal includes step S502 to step S506.

Step S502：Terminal network to be accessed obtains the information that the terminal supports D2D communications.

Step S504：When network support D2D is communicated, network receives the D2D communication requests that terminal is sent.

Step S506：Network carries out D2D access authentications according to D2D communication requests to terminal.

By above-mentioned steps, network and the respective information for supporting D2D communications of terminal interaction, i.e. network obtain the branch of terminal The information of D2D communications is held, after terminal obtains the information of support D2D communications of network, when network support D2D is communicated, is received eventually After holding the D2D communication requests sent, D2D access authentications are carried out to terminal according to D2D communication requests, wherein, D2D communication requests are Any request below：D2D registration requests, D2D discovery requests, D2D connection requests.

Preferably, terminal network to be accessed obtains the information that the terminal supports that D2D is communicated and includes：Terminal net to be accessed The terminal that carries that network receives terminal transmission supports the attach request of the information of D2D communications to carry out the terminal and support D2D communications Information.

Preferably：Network can be mobile management network element, wherein, when mobile management network element of the terminal into EUTRAN When sending D2D communication requests, mobile management network element can include：MME；When mobile management network of the D2D terminals into UTRAN When member sends D2D communication requests, mobile management network element can include：SGSN.

Preferably, network carries out D2D access authentications according to D2D communication requests to terminal includes：Wireless base station in network System receives D2D communication requests, and initiate to mobile management network element to obtain the D2D signing informations of D2D terminals please It asks；Wireless base system carries out D2D access authentications according to the D2D signing informations of terminal to terminal, wherein, when terminal is to EUTRAN In wireless base system send D2D communication requests when, wireless base system can include：Base station eNodeB, mobile management Network element can include：MME；When wireless base system of the terminal into UTRAN sends D2D communication requests, wireless base system It can include：RNC, mobile management network element can include：SGSN.

Preferably, network carries out D2D access authentications according to D2D communication requests to terminal includes：Wireless base station in network System receives D2D communication requests, and to the request that mobile management network element initiation is authenticated D2D terminals；Wireless base station System using mobile management network element to D2D terminals be authenticated as a result, improving network according to D2D communication requests to terminal Carry out the flexibility of D2D access authentications.

A kind of cut-in method of terminal is present embodiments provided, as shown in fig. 6, the cut-in method of the terminal includes step S602 to step S604.

Step S602：Terminal obtains the information of terminal network support D2D communications to be accessed.

Step S604：When network support D2D is communicated, terminal sends D2D communication requests to network, wherein, D2D communications please Seek to trigger network to terminal progress D2D access authentications.

Preferably, terminal obtains the information that terminal network support D2D to be accessed is communicated and includes：Terminal passes through with lower section One of formula obtains the information of network support D2D communications：Terminal obtains network support D2D communications by receiving cell broadcast messages Information；Terminal obtains the information of network support D2D communications by receiving attachment response message.

Preferably, included in terminal by receiving the information of attachment response message acquisition network support D2D communications：Network root Information is descended to judge D2D communication activation instructions according to this, when carrying D2D communication activation instructions in adhering to response message, terminal passes through D2D communication activation instructions obtain the information of network support D2D communications, and otherwise, terminal obtains the letter that network does not support D2D to communicate Breath, wherein, judge that information includes one below：The D2D communication tenabilities of terminal and the D2D communication tenabilities of network；Eventually D2D communications tenability, the D2D communication tenabilities of network and the D2D service contracting situations of terminal at end.

A kind of register device of D2D terminals is present embodiments provided, which is applied to D2D registrar, such as Fig. 7 institutes Show, the register device of the D2D terminals includes：Receiving module 702, the D2D for receiving the transmission of D2D terminals by network entity are noted Volume request；Execution module 704 is connected to receiving module 702, for performing the registration of D2D terminals operation.

Preferably, above-mentioned receiving module 702 is additionally operable to receive the access information for the D2D terminals for carrying network entity addition D2D registration requests, wherein, the access information of D2D terminals includes：The access mark of D2D terminals and the position of D2D terminals are believed Breath.

Preferably, as shown in figure 8, the register device of above-mentioned D2D terminals further includes：Memory module 706, for working as D2D ends End on D2D registrar when succeeding in registration, store D2D terminals registration context, wherein, registration context include with It is one of lower：The access layer information of D2D terminals；The access layer information of D2D terminals and the application layer message of D2D terminals.

A kind of discovery device of D2D terminals is present embodiments provided, which is applied to D2D registrar, such as Fig. 9 institutes Show, the discovery device of the D2D terminals includes：First receiving module 902, it is whole by D2D by network entity forwarding for receiving Hold the D2D terminal discovery requests sent；Determining module 904 is connected to the first receiving module 902, for being found according to D2D terminals Request determines the D2D terminals closed on, and the information for the D2D terminals closed on is returned to D2D terminals, wherein, the D2D terminals closed on It is the D2D terminals that can be communicated with D2D terminals.

Preferably, as shown in Figure 10, above-mentioned determining module 904 includes：Acquiring unit 9042, for being sent out according to D2D terminals Existing acquisition request initiates the registration context of the D2D terminals of the D2D terminal discovery requests；Determination unit 9044 is connected to acquisition Unit 9042, for determining the D2D terminals closed on according to the registration context of D2D terminals, and by the information for the D2D terminals closed on Return to D2D terminals.

Preferably, above-mentioned determination unit 9044 is additionally operable to carry default D2D services class in D2D terminal discovery requests When type or D2D application layer identifications, returned to according to the D2D terminals that information group determines now to close on, and by the information of the D2D closed on D2D terminals, wherein, information group includes one below：The registration context of D2D terminals and default D2D service types；D2D is whole The registration context at end and D2D application layer identifications.

Preferably, as shown in figure 11, the discovery device of above-mentioned D2D terminals further includes：Second receiving module 906, for Before D2D registrar receives the D2D terminal discovery requests sent by D2D terminals forwarded by network entity, pass through net Network entity receives the D2D registration requests that D2D terminals are sent.

Preferably, as shown in figure 12, the discovery device of above-mentioned D2D terminals further includes：Memory module 908, for whole in D2D After end is succeeded in registration, the registration context of D2D terminals is stored, wherein, registration context includes one below：D2D terminals Access layer information；The access layer information of D2D terminals and the application layer message of D2D terminals.

Preferably, as shown in figure 13, the discovery device of above-mentioned D2D terminals further includes：Update module 910, for being noted in D2D Volume server is sent out after the network inquiry of the D2D endpoint registrations or the location information of subscription D2D terminals in the position of D2D terminals In the case of changing, the location information in the access layer information of D2D registrar update D2D terminals is the change of D2D terminals Location information after change.

A kind of access device of terminal is present embodiments provided, which is applied to network, as shown in figure 14, the terminal Access device includes：Acquisition module 1402, for obtaining the information that the terminal to be registered to network supports D2D communications；Receive mould Block 1404 is connected to acquisition module 1402, for when network support D2D is communicated, receiving the D2D communication requests that terminal is sent； Access authentication module 1406 is connected to receiving module 1404, for carrying out D2D access authentications to terminal according to D2D communication requests.

Preferably, above-mentioned acquisition module 1402, the terminal that carries for being additionally operable to receive terminal transmission support D2D communications The attach request of information.

A kind of access device of terminal is present embodiments provided, which is applied to terminal, as shown in figure 15, the terminal Access device includes：Acquisition module 1502, for obtaining the information of terminal network support D2D communications to be accessed；Send mould Block 1504 is connected to acquisition module 1502, for when terminal supports D2D communications, D2D communication requests to be sent to network, wherein, D2D communication requests carry out D2D access authentications for triggering network to terminal.

Preferably, as shown in figure 16, above-mentioned acquisition module 1502 includes：First acquisition unit 1602 receives for passing through Cell broadcast messages obtain the information of network support D2D communications；Second acquisition unit 1604 disappears for passing through to receive attachment and respond Breath obtains the information of network support D2D communications.

Preferably, above-mentioned second acquisition unit 1604 is additionally operable to network and judges that D2D communication activation refers to according to following information Show, when carrying D2D communication activation instructions in adhering to response message, network support D2D is obtained by D2D communication activation instructions and is led to The information of news, otherwise, terminal obtain the information that network does not support D2D to communicate, wherein, judge that information includes one below：Terminal D2D communication tenability and network D2D communication tenability；The D2D communications of the D2D communications tenability, network of terminal The D2D service contracting situations of tenability and terminal.

A kind of access system of terminal is present embodiments provided, including：It is applied in any of the above-described preferred embodiment The access device of the terminal applied to terminal in the access device of the terminal of network and any of the above-described preferred embodiment.

Above-mentioned each embodiment is described in detail below in conjunction with drawings and examples.

Embodiment one：

It is that terminal (being equivalent to D2D terminals) initiates D2D registration request processes to network (being equivalent to network entity) below, by The D2D registration requests of terminal are transmitted to the flow of D2D registrar by network, have following steps：

Step S1, terminal enter D2D communication modes, and D2D registration messages are initiated to network；

In this step, terminal enters D2D communication modes, it can be understood as terminal opens D2D Communications service service modules. The initiation of D2D communications is, it is necessary to which network and terminal are provided simultaneously with supporting the ability of D2D communications, and open D2D Communications services.It examines Consider for terminal, open D2D services and might mean that additional power consumption, therefore terminal only can need to carry out D2D Communications service modules are opened when D2D is communicated.In this sense, terminal will enter D2D communication modes.

Step S2, as needed, the D2D authorization messages of network verification terminal.Network is by the D2D registration message forwards of terminal Give DRS servers；

In this step, network to terminal it is possible that perform D2D authorization verification process, to verify whether terminal is allowed to connect Enter progress D2D communications in a network.

Step S3, DRS server receive the D2D registration messages of network forward, storage D2D registration contexts.

It in this process, as needed, may be to terminal after DRS servers receive the D2D registration messages of network forward D2D registration requests be authenticated, according to authentication result decide whether receive terminal D2D register.

After the completion of D2D registrations, the D2D registration contexts of DRS server storage terminals.

Figure 17 is the configuration diagram that D2D registrar is introduced according to embodiments of the present invention one network, wherein, it deposits In a network, terminal initiation is received and processed in DRS servers (D2D Register Server, referred to as DRS) deployment D2D is registered, and according to.Registration service DRS can be deployed in close to wireless network (Radio Access Network, abbreviation For RAN) side, it can also be close to core network side (Core Network, referred to as CN) side.Specifically, feelings are accessed in EUTRAN Under condition, RS can be deployed in close to base station eNodeB side, can also be deployed on eNodeB.Alternatively, RS can be deployed in it is close Mobile management network element MME sides, can also be deployed on MME.

Figure 18 be according to embodiments of the present invention one D2D terminals to wireless base station initiate D2D registration requests, wireless base station will The D2D registration requests that D2D terminals are sent are transmitted to the flow diagram of D2D registrar, by taking EUTRAN is accessed as an example, terminal (being equivalent to D2D terminals) initiates D2D registration requests to base station eNodeB, and eNodeB is by the D2D registration request forwards of terminal to DRS Server.

In flow chart 18, by taking two terminal UEs 1, UE2 as an example, D2D registration processes are initiated respectively, which includes as follows Step S1802 to step S1818.

Step S1802, UE1 enter D2D communication modes, and D2D registration messages are initiated to eNodeB.The D2D registration messages can To be included in RRC information；

The D2D registration messages can be a simple D2D sign-on IDs, indicate that UE1 enters D2D communication modes.

So-called D2D communication modes, it is believed that be that UE opens D2D Communications services, establish D2D communication resources, then keep The state of activation of the D2D communication resources.In terms of network, D2D communication modes might mean that UE is in connection status, and UE's is wireless Resource and resources of core network keep active state.

If D2D registration failures, UE exits D2D communication modes, including：Discharge D2D communication resources.Further, such as Fruit is without other communication connections, then UE can exit connected state, into Idle state.

The D2D registration messages can also carry the D2D application layer messages of UE, can be the group of following information specifically It closes：The D2D user identifiers (D2D User ID) of UE1, the D2D service types (D2D Service Type) of UE1.

The D2D user identifiers of UE, with for one D2D telecommunication customer end of D2D application program identifications.The D2D service classes of UE Type, to identify the type of a D2D application, such as Skype, QQ etc..In D2D registration messages, the D2D of UE can be only provided One kind of user identifier and the D2D service types of UE, can also provide simultaneously.

Typically, the D2D user identifiers of UE are possible to impliedly express the D2D service types of UE, for example the D2D of UE is used Family is identified as：Lisi@msn.com,It then can (domain name for D2D user identifiers claims portion herein by some parts of D2D user identifiers Point) derive D2D service types (may be considered MSN services herein).In this case, the D2D user identifiers of UE are default Ground, which implies, expresses D2D service types, then can need not provide D2D service type informations.

Step S1804 after eNodeB receives the D2D registration messages of UE1 initiations, as needed, D2D accesses is carried out to UE1 Certification；

In this step, eNodeB may be interacted with MME, and the D2D access authentication information of UE1 is obtained from MME, so as to D2D access authentications are carried out to UE1.ENodeB may also allow MME to carry out D2D access authentications to UE1, and using MME to UE1's D2D access authentication results.

According to the D2D access authentications to UE1 as a result, eNodeB decisions are to refuse the D2D registration messages or forward of UE1 The registration message of UE1 is to DRS servers.

Specifically, if the D2D authentification failures of UE1, eNodeB performs step S1806, and D2D registration failures are returned to UE1 Message carries suitable cause value.If the D2D certifications success of UE1, eNodeB perform step S1808, the D2D of UE1 are noted Volume message forwarding gives DRS servers.

Step S1806, if the D2D access authentications failure of UE1, eNodeB return to D2D registration failure message to UE1；

In the registration failure message, suitable cause value is carried, shows the concrete reason of D2D registration failures.

Step S1808, if the D2D access authentications success of UE1, eNodeB give the D2D registration message forwards of UE1 DRS servers；

When to the D2D registration messages of DRS server forwards UE1, further, eNodeB can be by the access layer of UE1 Information is sent to DRS servers.Specifically, can include：Access identification information (IMSI or other used terminals of UE1 Access mark).Extraly, access layer information may further include：The current location information (such as Cell-ID) of UE1.

After step S1810, DRS server receives the registration request of UE1, as needed, D2D application authorizations, storage are performed D2D registers context, returns to D2D registration responses；

In this step, DRS servers may carry out UE1 the D2D certifications of application layer, i.e. D2D application authorizations.If The success of D2D application authorizations, then DRS servers return to D2D to eNodeB and succeed in registration response.If D2D application authorizations fail, then DRS servers return to the response of D2D registration failures to eNodeB, carry suitable cause value.

In addition, if the D2D registration contexts of D2D certifications success, then DRS server storages UE1, such as：

The access layer information of UE1：The access mark (such as IMSI) of UE1, the location information of cell (Cell-ID) of UE1；

The application layer message of UE1：D2D service types (the D2D of D2D user identifiers (D2D User ID), UE1 such as UE1 Service Type)；

Step S1812, DRS server returns to D2D registration responses to eNodeB, specifically, is registered according to request for D2D Work(responds or the response of D2D registration failures；

Step S1814, eNodeB return to D2D registration reply messages to UE1, and D2D registration reply messages carrying disappears in RRC In breath.

Step S1816, UE1 receive the D2D registration reply messages of eNodeB returns, if D2D registration failures, UE1 roots According to situation, D2D communication resources are discharged, for example close D2D communication modules.

Step S1818, in the same manner, if UE2 enters D2D patterns, UE2 performs D2D registrations to network.

Figure 19 be according to embodiments of the present invention one D2D terminals to core network mobility management element initiate D2D registration please It asks, the flow that the D2D registration requests that D2D terminals are sent are transmitted to D2D registrar by core network mobility management element is shown It is intended to, by taking EUTRAN is accessed as an example, terminal (being equivalent to D2D terminals) initiates D2D registrations to MME, and MME registers the D2D of terminal Forward gives DRS servers.

In flow chart 19, by taking two terminal UEs 1, UE2 as an example, D2D registration processes are initiated respectively, are included the following steps S1902 to step S1918.

Step S1902, UE1 enter D2D communication modes, and D2D registration messages are initiated to MME.The D2D registration messages can wrap It is contained in NAS message.

The D2D registration messages can be a simple D2D sign-on IDs, indicate that UE1 enters D2D communication modes.

The D2D registration messages can also carry the D2D application layer messages of UE, can be the group of following information specifically It closes：The D2D user identifiers (D2D User ID) of UE1, the D2D service types (D2D Service Type) of UE1.

Step S1904 after MME receives the D2D registration messages of UE1 initiations, as needed, carries out UE1 D2D accesses and recognizes Card；

In this step, MME carries out D2D access authentications to UE1.

According to the D2D access authentications to UE1 as a result, MME decisions are the refusal D2D registration messages of UE1 or forward UE1 Registration message to DRS servers.

Specifically, if the D2D authentification failures of UE1, MME performs step S1906, and returning to D2D registration failures to UE1 disappears Breath, carries suitable cause value.If the D2D certifications success of UE1, MME perform step S1908, the D2D registrations of UE1 are disappeared Breath forward gives DRS servers.

Step S1906, if the D2D access authentications failure of UE1, MME return to D2D registration failure message to UE1；

In the registration failure message, suitable cause value is carried, shows the concrete reason of D2D failures.

Step S1908, if the D2D access authentications success of UE1, MME take the D2D registration messages forward of UE1 to DRS Business device；

When to the D2D registration messages of DRS server forwards UE1, further, MME can be by the access layer information of UE1 It is sent to DRS servers.Specifically, can include：Access identification information (IMSI or other used terminal accesses of UE1 Mark), the current location information (such as Cell-ID) of UE1.

After step S1910, DRS server receives the registration request of UE1, as needed, D2D application authorizations, storage are performed D2D registers context, returns to D2D registration responses；

In this step, DRS servers may carry out UE1 the D2D certifications of application layer, i.e. D2D application authorizations.If The success of D2D application authorizations, then DRS servers return to D2D to eNodeB and succeed in registration response.If D2D application authorizations fail, then DRS servers return to the response of D2D registration failures to MME, carry suitable cause value.

In addition, if the D2D registration contexts of D2D certifications success, then DRS server storages UE1, such as：

The access layer information of UE1：The access mark (such as IMSI) of UE1, the location information of cell (Cell-ID) of UE1；

The application layer message of UE1：D2D service types (the D2D of D2D user identifiers (D2D User ID), UE1 such as UE1 Service Type)；

Step S1912, DRS server returns to D2D registration responses to MME, specifically, is succeeded in registration according to request for D2D Response or the response of D2D registration failures；

Step S1914, MME return to D2D registration reply messages to UE1, which carries in NAS message In.

Step S1916, UE1 receive the D2D registration reply messages of MME returns, if D2D registration failures, UE1 is according to feelings Condition discharges D2D communication resources, for example closes D2D communication modules.

Step S1918, in the same manner, if UE2 enters D2D patterns, UE2 performs D2D registrations to network.

The flow shown in flow and Figure 18 shown in Figure 19 is similar in principle, and difference is：

In the flow shown in Figure 19, for UE by sending D2D registration messages to MME, which is comprised in NAS message In, give DRS servers by MME forwards.In the flow shown in Figure 18, D2D registration messages are comprised in RRC information, by ENodeB forwards give DRS servers.

D2D access authentication procedures are performed by MME.During shown in Figure 18, D2D access authentication procedures can be by ENodeB or MME is performed.

MME in the D2D registration messages of forward UE, add UE access layer information, as UE access layer identification (IMSI, Or other access layer identifications), the location information of cell (Cell-ID) of UE.In the flow shown in Figure 18, eNodeB adds UE's Access layer information.

In the flow shown in Figure 19, only MME identifies the D2D registration messages of UE, it is known that UE enters D2D communication modes.By In the D2D registration messages that eNodeB nonrecognition UE is initiated, thus eNodeB is not aware that UE comes into D2D communication modes.

After the flow shown in Figure 18, Figure 19 is applied, UE performs D2D registrations by network to DRS servers so that DRS servers obtain the essential information of UE (such as：UE comes into initial position message of D2D communication modes, UE etc.) so that DRS servers are provided with preliminary ability and carry out D2D registering results according to UE, select the D2D registration terminals closed on.

In embodiment one, UE is not aware that in network D2D registrar is present in where, and UE is only an attempt to network D2D registration processes are initiated, from network (wireless access network, core net) to the D2D registration messages of D2D registrar forwards UE, And return to D2D registration responses to UE.Which requirement network is participated in D2D registration processes, if it is considered that network is not allowed to participate in Into D2D registration processes, there may be another mode, as described by embodiment two, network provides D2D registration services to UE Device voluntarily initiates D2D registrations from UE to D2D registrar, and some that D2D registrar is provided using network are basic Service, such as location-based service LCS, to obtain the location information in UE access to network.

Embodiment two：

Figure 20 is that according to embodiments of the present invention two network provides the information of D2D registrar to D2D terminals, and D2D is whole The flow diagram of D2D registration requests is directly initiated at end to D2D registrar, by taking EUTRAN is accessed as an example, describes network The address information of D2D registrar is provided to terminal (being equivalent to D2D terminals), terminal is directly initiated to D2D registrar The process of D2D registrations.Include the following steps S2002 to step S2018.

Step S2002~S2010, UE request is attached to network, and network performs normal attachment flow processing, rung in attachment Ying Zhong returns to Dynamic Host Configuration Protocol server, DRS server infos.

The DRS server infos returned can be domain name, an IP address.If the DRS server infos returned are Domain name, then UE need to Dynamic Host Configuration Protocol server request analysis DRS server address.

Step S2012, according to circumstances, UE perform DHCP request to Dynamic Host Configuration Protocol server, parse the IP address of DRS servers；

Step S2014~S2016, UE initiate D2D registration requests to DRS servers, and DRS servers register the D2D of UE Request is authenticated, and returns to D2D registration responses to UE.If D2D succeeds in registration, DRS servers preserve the D2D registrations of UE Context.

In this step, UE sends D2D registration messages, wherein carrying the similar information such as Figure 18.

During DRS servers carry out D2D certifications to UE, the D2D that DRS may obtain UE by other interfaces contracts Data carry out D2D certifications according to the subscription data of UE to UE.

Step S2018, after UE receives D2D registration responses, according to circumstances, and if registration failure, UE release D2D communication moneys Source.

Terminal performs D2D registrations so that it can be obtained on DRS servers into the terminal of D2D communication modes in region, and It is possible to know the information such as type, D2D application identities of terminal of D2D services that these terminals are opened, so as to be some Terminal finds to provide the other-end of similar D2D services in some region.However, after terminal opens D2D communication modes, it may It can move, the location information of terminal is caused to change so that the end registered when terminal initial D2D is registered on DRS servers End position becomes inaccurate, so that the discovery of the adjacent terminal end based on original D2D registered locations becomes no practical function.

In order to solve this problem, it is necessary to DRS servers after terminal D 2D succeeds in registration, it is necessary to whole from network subscription The change in location at end, after terminal location changes so that DRS can obtain position Notification of Changes in time, so as to be based on end The D2D terminals that end position discovery closes on.

Embodiment three：

A kind of method inquired about and close on D2D terminals is present embodiments provided, having recorded terminal in the present embodiment (is equivalent to D2D terminals) perform D2D registrations after, close on the flows of D2D terminals from the inquiry of DRS servers, which includes the following steps S1 extremely Step S4.

Step S1, terminal initiate D2D registrations, the D2D contexts of DRS server storage terminals；

Step S2, DRS server is after endpoint registration success, to the position of network subscription terminal；

DRS servers subscribe to the position of terminal to network (wireless access network, core net) after terminal D 2D succeeds in registration Variation, after changing in order to the position of terminal, DRS servers can obtain notice and obtain newest terminal location letter in time Breath.

Step S3, terminal send to DRS servers and ask, and inquire about the D2D terminals closed on；

Step S4, DRS server judges and requesting terminal phase according to the D2D log-on messages of terminal, the location information of terminal The other-end closed on, and return to the terminal for sending request.

Figure 21 is that according to embodiments of the present invention three D2D registrar subscribes to the current location of D2D terminals from eNodeB Information, so that it is determined that the flow diagram for the D2D terminals closed on, by taking EUTRAN is accessed as an example, DRS subscribes to terminal to eNodeB The change in location of (being equivalent to D2D terminals), to judge the terminal closed on according to the newest position of terminal.The flow includes as follows Step S2102 to step S2126.

Step S2102~S2108, UE initiate D2D register flow paths, specific steps such as Figure 18 steps S1802 to step S1808 It is shown.

Step S2110, after the D2D of UE succeeds in registration, DRS servers subscribe to the change in location of UE to eNodeB；

Step S2112, after the D2D of UE succeeds in registration, UE enters D2D communication modes；

Step S2114, after a period of time, UE may be moved；

Step S2116, eNodeB detect the movement of UE, to the change in location situation of DRS servers report UE；

When UE, which is under D2D communication modes, to be moved, the radio resource of UE keeps state of activation, at this point, wireless access network Network (eNodeB) can detect the mobility of UE, so as to trigger position change events, to the change in location feelings of DRS servers report UE Condition.According to this method, DRS servers obtain the newest location information of UE.

Step S2118, then, UE send D2D terminal discovery requests to eNodeB, it is desirable that find the D2D terminals closed on；

UE may specify the D2D service types (D2D for the terminal for wishing to find when sending D2D terminal discovery requests Service Type), DRS initiates D2D service types when D2D is registered to detect the D2D terminals closed on according to UE；

Step S2120, eNodeB give the D2D terminal discovery request forwards of UE to DRS servers；

Which step S2122, DRS server calculates according to the D2D log-on messages of terminal, the latest position information of terminal The D2D terminals that terminal was close on；

If UE in D2D terminals send request, carries the D2D service types (D2D for the terminal for wishing to find Service Type), then D2D service types when DRS servers initiate D2D registrations according to UE are whole to screen matched D2D End.

If UE does not indicate D2D service types when initiating D2D registrations, but the D2D user identifiers of UE impliedly indicate Its D2D service type, then effective information in the D2D user identifiers that DRS can also be registered according to UE screen matched D2D Terminal.

Step S2124, DRS server returns to D2D terminals to eNodeB and finds response, wherein carrying the D2D terminals closed on List；

The D2D terminal lists that DRS servers were returned close on, the wherein information of adjacent terminal end may include following information Combination：The ID of terminal is (such as the access layer identification IMSI of terminal, the D2D user identifiers (D2D User ID) of terminal, terminal IP address etc..

Step S2126, eNodeB have found to respond to UE forwards D2D.

So far, UE can be found that the D2D terminals closed on by the above method, so as to targetedly select some end It holds to ask to initiate D2D connections.

It should be noted that if the network entity of forward D2D message is not eNodeB but the hair of MME, D2D terminal Existing flow is as shown in figure 22.

Figure 22 is that according to embodiments of the present invention three D2D registrar subscribes to the present bit confidence of D2D terminals from MME Breath, so that it is determined that the flow diagram for the D2D terminals closed on, by taking EUTRAN is accessed as an example, DRS subscribes to terminal to MME and (is equivalent to D2D terminals) change in location, to judge the terminal closed on according to the newest position of terminal.Figure 22 is similar with the flow of Figure 21, Mainly there is following difference：

UE to MME by sending D2D terminal discovery requests, which is comprised in NAS message, by MME forwards to DRS Server.In the flow shown in Figure 21, D2D registration messages are comprised in RRC information, are serviced by eNodeB forwards to DRS Device.

DRS servers subscribe to the change in location of UE to MME, and further MME may subscribe to the position change of UE to eNodeB Change.In the flow shown in Figure 21, DRS directly subscribes to the change in location of UE to eNodeB.

In flow shown in Figure 21, Figure 22, DRS directly to eNodeB/MME subscribe to UE change in location situation, this for ENodeB/MME has additional location-based service enhancing requirement.Another method is that DRS passes through positioning service (Location Service, abbreviation LCS) Gateway Mobile Location Center (Gateway Mobile Location Center, abbreviation GMLC) come Pull subscription the location information of UE to LCS positioning service systems, so as to know UE in time most when the position of UE changes New location information.LCS positioning service systems can utilize network positions ability, UE stationkeeping abilities etc. to calculate the position of UE, both may be used To meet the location requirement of cell level (Cell ranks), the location requirement based on physical accuracy can also be provided.It was positioning Cheng Zhong, LCS positioning flow can wake up UE, and UE is maintained at connected state, to obtain the most accurate location information of UE.

Figure 23 is that according to embodiments of the present invention three D2D registrar subscribes to the present bit confidence of D2D terminals from LCS Breath, so that it is determined that the flow diagram for the D2D terminals closed on, by taking E-UTRAN is accessed as an example, describes DRS to LCS positioning services The GMLC of system subscribes to the location information of UE, and the newest information based on UE, calculates the flow diagram of adjacent terminal end, has Following steps S2302 to step S2326.

Step S2302~step S2308, UE (being equivalent to D2D terminals) performs D2D registration processes, with step S1802 to step Rapid S1808.

Step S2310, UE enter D2D communication modes；

In foregoing schemes, it is desirable that D2D communication modes must be that UE is maintained at connected state.And in this flow, due to using LCS positioning services, LCS positioning services can effectively activate UE and enter connected state, and there is no need to emphasize that UE enters D2D communication modes It preferably must be held in connected state.

Step S2312, DRS server subscribes to the location information of UE to GMLC；

Step S2314, GMLC triggering exhales position fixing process eventually；

In this step, according to existing LCS positioning flows, it is related to the interaction with MME, eNodeB therebetween.Since DRS wishes UE can obtain the latest position information of UE during D2D is registered.Therefore end call position fixing process will trigger for based on The reporting position process of UE change in location or based on periodic UE reporting positions process.

Step S2316, according to positioning flow is exhaled eventually, triggering UE enters connected state；

Step S2318~step S2322, thereafter, UE movements cause change in location, and the corresponding position of position fixing process is exhaled in triggering eventually Reason.According to positioning flow is exhaled eventually, MME reports the change in location situation of UE to GMLC.GMLC reports the position of UE to DRS servers Situation of change.So as to which DRS servers obtain the latest position information of UE；

Step S2324~step S2326, such as earlier figures 21,22 flows, UE initiates D2D terminal discovery requests, DRS according to The D2D log-on messages of UE, the latest position information of UE, judge the D2D terminals closed on, and sending D2D terminals to UE finds response.

To Figure 23 the embodiment described, DRS servers obtain the location information of UE from GMLC.Another is taken using LCS The process variant of business is, DRS servers can also directly and Serving Mobile Location Center (Serving Mobile Location Center, referred to as SMLC) or enhancing Serving Mobile Location Center (Enhanced SMLC, referred to as E-SMLC) establish in Portion's interface obtains the location information of UE.

Example IV

In the direct-connected communications of D2D, operator wishes there is enough control abilities to D2D communications, is embodied in operator's net On network, it would be desirable to be able to the D2D accesses of terminal be controlled, which controls the ability, the ability of terminal, end for being potentially based on network The processes such as the signing at end carry out.

In the present embodiment, it is proposed that a kind of method so that terminal and network can mutually know the energy of each self-supporting D2D Power, so as to carry out necessary access authentication control when terminal attempts to carry out D2D communications.

Figure 24 is that according to embodiments of the present invention four network and terminal room interact respective D2D communications and support information, and is held The flow diagram of the access authentication of row D2D terminals describes terminal and network interaction D2D communication tenabilities, and to terminal D2D communication requests carry out the flow diagram of access authentication, which includes the following steps S2402 to step S2408.

Information is supported in step S2402, terminal and network interaction D2D communications；

Information is supported in D2D communications, includes the meaning of two levels：One is terminal or network intrinsic D2D is communicated Actual tenability, the second is the D2D of terminal or network communication activation instruction, i.e., terminal or network unlatching D2D Communications services Instruction.

Information is supported in the D2D communications that network obtains terminal, and typical method is：Terminal is initiating attach request to network When, the D2D communication tenabilities of instruction terminal.If terminal is actual to possess D2D communication tenabilities, but is presently off D2D communicates tenability, then terminal does not carry D2D communication tenabilities when to network initiated request.

Information, Ke Yishi are supported in the D2D communications that terminal obtains network：

The tenability that terminal communicates D2D by the Cell Broadcast CB acquisition network of wireless access system.Here terminal institute Obtain be network the intrinsic actual tenability to D2D communications；Alternatively,

Terminal passes through attaching process, the network support information that instruction network communicates D2D in attachment responds.

Wherein, can be network institute if the D2D of network to terminal instruction network communicates tenability in attaching process Intrinsic indicates the actual tenability of D2D communications or the D2D communication activation of network.Network can be according to Home Network Actual tenability that network communicates D2D, the D2D communications tenability of terminal, (ratio is such as whether allow eventually for the subscription data of terminal End carries out D2D communications), D2D communication activation instructions are issued after integrated decision-making.

Step S2404, the support information that terminal communicates D2D according to network initiate D2D communication requests；

If in abovementioned steps, if network not to terminal issue network to the D2D actual tenabilities communicated or D2D communication activation instructions, then show that network does not support D2D to communicate or the terminal is not allowed to carry out D2D communications, then terminal should not D2D communication requests are initiated to network.

In this step, D2D communication requests can be：D2D registration requests, D2D terminals discovery request, D2D connection requests Etc..

After network receives the D2D communication requests of terminal initiation, D2D access authentications are carried out to terminal by step S2406；

Step S2408, network is according to D2D access authentications as a result, processing D2D communication requests.If D2D access authentications lose It loses, then refuses the D2D communication requests of terminal, return to suitable failure cause.If the success of D2D access authentications, continues with The D2D communication requests of terminal.

Figure 25 is that according to embodiments of the present invention four terminal obtains the D2D communication support information of network by Cell Broadcast CB Flow diagram, terminal obtains the flow chart of the D2D tenabilities of network by Cell Broadcast CB, by taking EUTRAN is accessed as an example, tool Have the following steps S2502 to step S2504.

Step S2502, operator perform eNodeB configuration, and configuration can pass through operation management system (Operator Management System, abbreviation OMS) it carries out；

It is possible to different according to the cell broadcast information of the different base station of configuration.When eNodeB supports D2D communications, operation Business can configure the ability of the eNodeB, indicate that it supports D2D communications.

Step S2504, eNodeB are by Cell Broadcast CB, to the D2D of the terminal instruction network of all reading Cell Broadcast CBs Communicate tenability.

Figure 26 is that according to embodiments of the present invention four terminal obtains the D2D communication branch of network by receiving attachment response message The flow diagram of information is held, terminal is when attachment and network interaction D2D supports the flow chart of information, is accessed with EUTRAN Exemplified by, which includes the following steps S2602 to step 2614.

Step S2602, terminal initiate the D2D communication tenabilities of attach request, wherein carried terminal；

Step S2604, eNodeB are by terminal attach request forward to MME；

Step S2606, MME are updated to HSS launch positions to be asked；

Step S2608, HSS are updated to MME return positions to be responded；

In the location updating response returned in HSS, the subscription data of carried terminal.In subscription data, indicate that terminal is No D2D business of having contracted.

Step S2610, MME judge to tackle the D2D communication activation instructions of UE returns according to information；

MME can should be indicated using following information come integrated decision-making to the D2D activation communications that UE is returned：

The D2D of-network communicates actual tenability；

The D2D communication tenabilities of-terminal；

Whether-terminal has contracted D2D business；

When using above- mentioned information, MME may be employed following strategy and carry out decision-making D2D communication activation instructions：

- communicate actual tenability according only to the D2D of network and carry out decision-making；

- actual tenability, the D2D communication tenabilities of terminal communicated come decision-making according to the D2D of network；

- according to network and the D2D of terminal communicate actual tenability, whether terminal has contracted D2D business come integrated decision-making；

Step S2612, MME return to attachment response, wherein carrying D2D communication activation instructions；

Step S2614, eNodeB are transmitted to UE by response is adhered to, wherein carrying D2D communication activation instructions.

So far, UE is after the D2D communication activation instructions that network issues are obtained, if D2D communication activation instructions are arranged to It activates, then UE thinks that network allows its to carry out D2D communication traffics.If D2D activation instructions are arranged to un-activation or network D2D communication activation instructions are not provided, then UE is considered as D2D communication traffics and is not allowed under the network.

In the flow of Figure 26, network issue D2D communication activation be indicated to UE when, it is possible to only consider network D2D Tenability is communicated, whether has been contracted D2D business without comparing UE.Although alternatively, network issue D2D activation be indicated to UE When, whether the D2D communications tenability of Integrated comparative network, the D2D communications tenability of UE, UE have contracted D2D business, but Be before UE truly initiates D2D communication requests, the D2D signing services of UE may be cancelled or the D2D credits number of UE Through being finished.In the case that as above, when UE really initiates D2D communication requests (such as D2D registration requests, D2D terminals discovery request, D2D Connection request) when, network still may need to carry out access authentication to the D2D communication requests of UE.

Figure 27,28 are when UE initiates D2D communication requests, and network carries out UE the process of D2D access authentications.

Figure 27 be according to embodiments of the present invention four terminal initiate D2D communication requests when, Radio Access Network is to terminal The flow diagram of D2D access authentications is carried out, by taking EUTRAN is accessed as an example, for UE when initiating D2D communication requests, eNodeB is to UE The flow chart of D2D access authentications is carried out, includes the following steps S2702 to step S2712.

Step S2702, UE initiate D2D communication requests to eNodeB；

The D2D communication requests may be：Request etc. is established in D2D registration requests, D2D terminals discovery request, D2D connections；

Step S2704, eNodeB ask the D2D signing informations of UE to MME；Alternatively, eNodeB asks to perform UE to MME D2D access authentications；

Step S2706 returns to the D2D signing informations of UE to eNodeB according to step S2704, MME；Alternatively, MME to UE into Row D2D access authentications return to D2D access authentication results to eNodeB；

If eNodeB, to the D2D signing informations of MME requests UE, MME returns to the D2D of UE according to the subscription data of UE The related signing information of communication traffic.

If eNodeB asks to carry out UE D2D access authentications to MME, MME utilizes the subscription data of UE, and UE is carried out D2D access authentications.Such as：The D2D communication traffics if UE does not contract, access authentication failure.

Step S2708, eNodeB returning the result according to MME carry out D2D access authentications to UE；

If in abovementioned steps, MME performed UE D2D access authentications, then MME can be used directly to UE in eNodeB Access authentication result.

Step S2710 if unsuccessful to the D2D access authentications of UE, return to D2D Communications failures and responds to UE, carries Suitable cause value；Alternatively, if the D2D access authentications success to UE, performs S2712；

Step S2712, the D2D access authentications success to UE, eNodeB forward D2D communication requests.Follow-up D2D Communication processings Request process is handled as the case may be.

Figure 28 be according to embodiments of the present invention four terminal initiate D2D communication requests when, core net to terminal carry out D2D The flow diagram of access authentication, by taking EUTRAN is accessed as an example, when initiating D2D communication requests, MME carries out D2D to UE and connects UE Enter the flow chart of certification, substantially similar with flow shown in Figure 27, difference is：In the flow shown in Figure 28, eNodeB is not D2D access authentications are participated in, D2D access authentications are completely by MME processing.

Embodiment five

In the present embodiment, a kind of software is additionally provided, which is used to perform above-described embodiment and preferred embodiment Described in technical solution.

In another embodiment, a kind of storage medium is additionally provided, above-mentioned software is stored in the storage medium, it should Storage medium includes but not limited to：CD, floppy disk, hard disk, scratch pad memory etc..

Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general Computing device realize that they can concentrate on single computing device or be distributed in multiple computing devices and be formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored Performed in the storage device by computing device, and in some cases, can be performed with the order being different from herein shown in The step of going out or describing they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.It to be combined in this way, the present invention is not limited to any specific hardware and softwares.

It these are only the preferred embodiment of the present invention, be not intended to limit the invention, for those skilled in the art For member, the invention may be variously modified and varied.Any modification within the spirit and principles of the invention, being made, Equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.

Claims (16)

1. a kind of cut-in method of terminal, it is characterised in that including：

Terminal network to be accessed obtains the information that the terminal supports D2D communications；

When D2D described in the network support is communicated, the network receives the D2D communication requests that the terminal is sent；

The network carries out D2D access authentications according to the D2D communication requests to the terminal.

2. according to the method described in claim 1, it is characterized in that, terminal network to be accessed obtains the terminal D2D is supported to lead to The information of news includes：

The terminal that carries that terminal network to be accessed receives terminal transmission supports the attachment of the information of D2D communications to ask It asks.

3. method according to claim 1 or 2, it is characterised in that：

The network is mobile management network element, wherein, when mobile management network element of the terminal into EUTRAN sends D2D During communication request, the mobile management network element includes：MME；When mobile management network element of the terminal into UTRAN is sent During D2D communication requests, the mobile management network element includes：SGSN.

4. method according to claim 1 or 2, which is characterized in that the network is according to the D2D communication requests to described Terminal, which carries out D2D access authentications, to be included：

Wireless base system in the network receives the D2D communication requests, and is used for mobile management network element initiation Obtain the request of the D2D signing informations of the terminal；

The wireless base system carries out D2D access authentications according to the D2D signing informations of the terminal to the terminal, wherein, When wireless base system of the terminal into EUTRAN sends D2D communication requests, the wireless base system includes：Base station ENodeB, the mobile management network element include：MME；Lead to when wireless base system of the terminal into UTRAN sends D2D During news request, the wireless base system includes：RNC, the mobile management network element include：SGSN.

5. method according to claim 1 or 2, which is characterized in that the network is according to the D2D communication requests to described Terminal, which carries out D2D access authentications, to be included：

Wireless base system in the network receives the D2D communication requests, and is initiated to mobile management network element to institute State the request that D2D terminals are authenticated；

The wireless base system uses the result that the mobile management network element is authenticated the D2D terminals.

6. a kind of cut-in method of terminal, it is characterised in that including：

Terminal obtains the information of terminal network support D2D communications to be accessed；

When D2D described in the network support is communicated, the terminal sends D2D communication requests to the network, wherein,

The D2D communication requests carry out D2D access authentications for triggering the network to the terminal.

7. according to the method described in claim 6, it is characterized in that, the terminal obtains terminal network support to be accessed The information of D2D communications includes：

The terminal obtains the information of the network support D2D communications one of in the following manner：

The terminal obtains the information of the network support D2D communications by receiving cell broadcast messages；

The terminal obtains the information of the network support D2D communications by receiving attachment response message.

8. the method according to the description of claim 7 is characterized in that institute is obtained by receiving attachment response message in the terminal Stating the information of network support D2D communications includes：

The network judges D2D communication activation instructions according to following information, and carrying the D2D in the attachment response message leads to During news activation instruction, the terminal is communicated by the D2D activates the information that instruction obtains the network support D2D and communicates, no Then, the terminal obtains the information that the network does not support D2D to communicate, wherein, judge that information includes one below：The terminal D2D communication tenability and the network D2D communication tenability；The D2D communications tenability of the terminal, the net The D2D communication tenabilities of network and the D2D service contracting situations of the terminal.

9. a kind of access device of terminal, which is applied to network, it is characterised in that including：

Acquisition module, for obtaining the information that the terminal to be registered to the network supports D2D communications；

Receiving module, for when D2D described in the network support is communicated, receiving the D2D communication requests that the terminal is sent；

Access authentication module, for carrying out D2D access authentications to the terminal according to the D2D communication requests.

10. device according to claim 9, which is characterized in that the acquisition module is additionally operable to receive the terminal transmission Carry the terminal support D2D communication information attach request.

11. a kind of access device of terminal, which is applied to terminal, it is characterised in that including：

Acquisition module, for obtaining the information of terminal network support D2D communications to be accessed；

Sending module, for when the terminal supports the D2D communications, D2D communication requests to be sent to the network, wherein, The D2D communication requests carry out D2D access authentications for triggering the network to the terminal.

12. according to the devices described in claim 11, which is characterized in that the acquisition module includes：

First acquisition unit, for passing through the information for receiving cell broadcast messages and obtaining the network support D2D communications；

Second acquisition unit, for passing through the information for receiving attachment response message and obtaining the network support D2D communications.

13. device according to claim 12, which is characterized in that the second acquisition unit is additionally operable to the network root Information is descended to judge D2D communication activation instructions according to this, when the D2D communications activation instruction is carried in the attachment response message, The information of the activation instruction acquisition network support D2D communications is communicated by the D2D, otherwise, the terminal obtains the net Network does not support the information that D2D is communicated, wherein, judge that information includes one below：The D2D communication tenabilities of the terminal and institute State the D2D communication tenabilities of network；The terminal D2D communication tenability, the network D2D communication tenability and The D2D service contracting situations of the terminal.

14. a kind of access system of terminal, which is characterized in that including：Terminal access device according to claim 9 or 10 With the terminal access device according to any one of claim 11 to 13.

15. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein, when described program is run Method any one of perform claim requirement 1 to 5,6 to 8.

16. a kind of processor, which is characterized in that the processor is used for operation program, wherein, right of execution when described program is run Profit requires the method any one of 1 to 5,6 to 8.