CN104618891B

CN104618891B - A kind of communication means, terminal and core network entity

Info

Publication number: CN104618891B
Application number: CN201310539315.9A
Authority: CN
Inventors: 衣强; 马景旺; 金辉; 欧阳国威
Original assignee: Huawei Device Dongguan Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2013-11-04
Filing date: 2013-11-04
Publication date: 2018-10-19
Anticipated expiration: 2033-11-04
Also published as: CN104618891A

Abstract

The embodiment of the invention discloses a kind of communication means, including：The first terminal for being not in the network coverage initiates first message to the second terminal in the network coverage and the second terminal establishes connection；The first terminal sends second message to apply obtaining IP address by the second terminal to the first core network entity, the mark of the first terminal is carried in the second message, so that first core network entity identifies the first terminal according at least to the mark, IP address is distributed for the first terminal；After the first terminal obtains IP address, communicated with network by the second terminal.The embodiment of the invention also discloses a kind of terminal and core network entities.Using the present invention, it may make the terminal for being not in the network coverage by the accessing terminal to network in the network coverage, communicated with real-time performance.

Description

A kind of communication means, terminal and core network entity

Technical field

The present invention relates to a kind of field of communication technology more particularly to communication means, terminal and core network entities.

Background technology

In traditional mobile network, the data communication path of terminal room will pass through core network entity gateway （Serving Gateway, abbreviation SGW）/ packet gateway PGW（Packet Data Network Gateway, abbreviation PGW）.Cause This, even if need to transmit data between the very close terminal of two distances, such as two pass through network apart from close computer Instant message applications transmits a big file, is also required to be transmitted by core network entity at this time.Network can be passed in this way Defeated bandwidth has larger demand, and efficiency of transmission is relatively low.Industry is in order to solve this problem, it is proposed that close to business （Proximity Services, abbreviation ProSe）Project, the terminal sowed discord by the project low coverage can communicate directly without By core network entity.Based on the research close to business project, it is proposed that another common problem, it is possible to exist and be not in The terminal of the network coverage（It can be described as remote terminal Remote UE）It has been in the terminal of the network coverage（It can be described as relaying eventually Hold Relay UE）Although can not be communicated between the two by core network entity, remote terminal can not access always Network is communicated with the equipment of network side.When remote terminal wishes to obtain unexistent data resource on some link terminals Or it when being communicated with some equipment in network, still cannot achieve.

Invention content

Technical problem to be solved of the embodiment of the present invention is, provides a kind of communication means.It can solve to be not in network The terminal of covering is communicated by the accessing terminal to network in the network coverage with real-time performance.

First aspect of the embodiment of the present invention provides a kind of communication means, including：

It is not in the first terminal of the network coverage and initiates first message and described the to the second terminal in the network coverage Two terminals establish connection；

The first terminal sends second message to apply obtaining IP by the second terminal to the first core network entity Address carries the mark of the first terminal in the second message, so that first core network entity is according at least to institute It states mark and identifies the first terminal, IP address is distributed for the first terminal；

After the first terminal obtains IP address, communicated with network by the second terminal.

In the first possible realization method of first aspect, in the first terminal by being built with the second terminal Vertical connection sends second message before applying obtaining IP address, to further include to the first core network entity：

The first terminal is executed by the second terminal and first core network entity and was authenticated with server Journey, in verification process, the first terminal sends third message to first core network entity by the second terminal, The mark of the first terminal is carried in the third message so that first core network entity preserve it is described mark and The correspondence of the international mobile subscriber identity IMSI of the first terminal；Or

The first terminal is executed by the second terminal and first core network entity and was authenticated with server Journey, in verification process, the first terminal receives the 4th message, and the described of the first terminal is carried in the 4th message Mark, and the 4th message be sent to by first core network entity and the second terminal by the server it is described First terminal, so that first core network entity preserves the correspondence of the IMSI of the mark and the first terminal；Or

The first terminal is executed by the second terminal and first core network entity and was authenticated with server Journey, in verification process, the first terminal receives the sent by the second terminal by first core network entity Five message carry the mark of the first terminal in the 5th message, and first core network entity preserves State the correspondence of the IMSI of mark and the first terminal；Or

The first terminal executes the verification process with server by the second terminal and the second core network entity, In verification process, the first terminal by the second terminal send the 6th message to second core network entity, it is described The mark of the first terminal is carried in 6th message, so that second core network entity is in first core net reality Body creates the correspondence of the IMSI of the mark and the first terminal, or so that second core network entity to described the One core network entity sends the IMSI of the mark and the first terminal, so that first core network entity preserves described the The correspondence of the IMSI of one mark and the first terminal；Or

The first terminal executes the verification process with server by the second terminal and the second core network entity, In verification process, the first terminal receives the 7th message, and the mark of the first terminal is carried in the 7th message, And the 7th message is sent to described first by the server by second core network entity and the second terminal Terminal, so that second core network entity creates the mark and the first terminal in first core network entity The correspondence of IMSI, or so that second core network entity to first core network entity send it is described mark and it is described The IMSI of first terminal is closed so that first core network entity preserves the corresponding of the IMSI of the mark and the first terminal System；Or

The first terminal executes the verification process with server by the second terminal and the second core network entity, In verification process, the first terminal receives the 8th message, and the 8th message includes the mark of the first terminal, and 8th message is sent to the first terminal by second core network entity by the second terminal, so that described Two core network entities create the correspondence of the IMSI of the mark and the first terminal in first core network entity, or So that second core network entity sends the IMSI of the mark and the first terminal to first core network entity, with Toilet states the first core network entity and preserves the mark and the correspondence of the first terminal IMSI.

The possible realization method of with reference to first aspect the first, in second of possible realization method, if described One core network entity preserves the correspondence of the IMSI of the mark and the first terminal, then the first terminal receives IP address by first core network entity according to the correspondence of the mark and the IMSI of the first terminal, described in identification After first terminal, distributed for the first terminal.

The possible realization method of with reference to first aspect the first, in the third possible realization method, if described When carrying the mark of the first terminal in four message or the 7th message, the mark is described first by the server Terminal distribution.

The possible realization method of with reference to first aspect the first, in the 4th kind of possible realization method, if described When carrying the mark of the first terminal in five message or the 8th message, the mark is described by first core network entity First terminal distributes.

The possible realization method of with reference to first aspect the first, in the 5th kind of possible realization method, if described When carrying the mark of the first terminal in five message or the 8th message, the two identity mark of layer for being identified as the first terminal The temporary identifications of knowledge or digital form.

The possible realization method of with reference to first aspect the first, in the 6th kind of possible realization method, if described It is described to be identified as the whole close to business of the first terminal when carrying the mark of the first terminal in three message or the 6th message End mark, two identity of layer or International Mobile Equipment Identity code IMEI.

The possible realization method of with reference to first aspect the first, in the 7th kind of possible realization method, if described It is described to be identified as assumed name Pseudonym when carrying the mark of the first terminal in four message or the 7th message.

The first or second or third or the 4th or the 5th or the 6th or the 7th with reference to first aspect or with reference to first aspect The possible realization method of kind, in the 8th kind of possible realization method, what is carried in the second message is identified as described first IMSI, IMEI or mobile station identity number MSISDN of terminal.

The 8th kind of possible realization method with reference to first aspect, in the 9th kind of possible realization method, described second Message is that dynamic host configuration protocol DHCP finds message or DHCP request message.

The 9th kind of possible realization method with reference to first aspect further include in the tenth kind of possible realization method：

The IP address rental period configuration message that first core network entity is sent is received, the IP address rental period configures message The middle rental period information for carrying the preset duration that first core network entity is first terminal configuration, so as to first core Heart network entity is when the preset duration reaches and does not receive the renewed treaty request of the first terminal, with recycling allocated IP Location.

Second aspect of the embodiment of the present invention provides a kind of communication means, including：

Second terminal in the network coverage receives the first message not sent out for the first terminal of the network coverage, establishes With the connection of the first terminal；

The second terminal receives the second message that the first terminal is sent, and includes described first in the second message The IMSI and mark of terminal, the second terminal preserve the IMSI and the correspondence of mark.

The first IP address that the second terminal receives the first terminal obtains request message, and first IP address obtains It includes the mark to take in request message, and the second terminal is according to the correspondence of the IMSI and mark, to core net reality Body sends the second IP address and obtains request message, and second IP address obtains in request message and carries the IMSI, so that The core network entity distributes IP address according to the IMSI of the first terminal for the first terminal；

The second terminal receives the IP address that the core network entity returns, and the IP address is sent to described first Terminal.

In the first possible realization method of second aspect, the two identity mark of layer for being identified as the first terminal Know.

The third aspect of the embodiment of the present invention provides a kind of communication means, including：

Second terminal initiates first message to mobile management entity, and the connection with core network entity is established in request；

The second terminal receives the second message that the mobile management entity returns, wherein is taken in the second message Address information with the core network entity；

The second terminal, which receives, is not in the certification request that the first terminal of the network coverage is sent；

The second terminal sends described first according to the address information of the core network entity to the core network entity The certification request of terminal completes verification process so that the first terminal is by the core network entity with server.

In the first possible realization method of the third aspect, the first message is PDN connection request messages, described Second message is PDN connection received messages；Or

The first message is Attach Request message, and the second message is attachment received message.

In second of possible realization method of the third aspect, the protocol configuration option PCO ginsengs in the second message The address information of the core network entity is carried in number, and the address information of the core network entity is matched by the core network entity It sets in the PCO parameters.

Fourth aspect of the embodiment of the present invention provides a kind of communication means, including：

In the first terminal for being not in the network coverage first message and described is initiated to the second terminal in the network coverage Second terminal is established after connection, and the first core network entity receives the first terminal and is used for by what the second terminal was sent Application obtains the second message of IP address, and the mark of the first terminal is carried in the second message；

The first terminal is identified according at least to the mark, IP address is distributed for the first terminal, so that described the After one terminal obtains IP address, communicated with network by the second terminal.

In the first possible realization method of fourth aspect, it is logical to receive the first terminal in the first core network entity It crosses before the second message for applying for obtaining IP address that the second terminal is sent, further includes：

Pass through the second terminal and the certification of first core network entity execution and server in the first terminal In the process, receive the third message that the first terminal is sent by the second terminal, carried in the third message described in The mark of first terminal preserves the corresponding of the international mobile subscriber identity IMSI of the mark and the first terminal and closes System；Or

Pass through the second terminal and the certification of first core network entity execution and server in the first terminal In the process, the 4th message that the server is sent is received, the 4th message is sent to described the by the second terminal One terminal carries the mark of the first terminal in the 4th message, preserves the mark and the first terminal The correspondence of IMSI；Or

Pass through the second terminal and the certification of first core network entity execution and server in the first terminal In the process, the 5th message is sent to the first terminal by the second terminal, described first is carried in the 5th message The mark of terminal preserves the correspondence of the IMSI of the mark and the first terminal；Or

Pass through the second terminal and the verification process of the second core network entity execution and server in the first terminal In, disappear to second core network entity, the described 6th if the first terminal sends the 6th message by the second terminal The mark of the first terminal is carried in breath, first core network entity receives what second core network entity created The correspondence of the IMSI of the mark and the first terminal, or receive the mark that second core network entity is sent With the IMSI of the first terminal, the correspondence of the IMSI of the first identifier and the first terminal is preserved；Or

Pass through the second terminal and the verification process of the second core network entity execution and server in the first terminal In, if the first terminal receives that the server is sent by second core network entity and the second terminal Seven message, carry the mark of the first terminal in the 7th message, and first core network entity receives described the The correspondence of the IMSI of the mark and the first terminal that two core network entities create, or receive second core net The IMSI for the mark and the first terminal that entity is sent, preserves the IMSI's of the first identifier and the first terminal Correspondence；Or

Pass through the second terminal and the verification process of the second core network entity execution and server in the first terminal In, it is described if the first terminal receives the 8th message that second core network entity is sent by the second terminal The mark of the first terminal is carried in 8th message, first core network entity receives second core network entity The correspondence of the IMSI of the mark and the first terminal that create, or receive the institute that second core network entity is sent The IMSI for stating mark and the first terminal, preserves the correspondence of the IMSI of the first identifier and the first terminal.

In conjunction with the first possible realization method of fourth aspect, in second of possible realization method, described After one core network entity preserves the correspondence of the IMSI of the first identifier and the first terminal, first core net Entity identifies the first terminal according to the correspondence of the mark and the IMSI of the first terminal, eventually for described first End distribution IP address.

In conjunction with second of possible realization method of fourth aspect, in the third possible realization method, if described When carrying the mark of the first terminal in four message or the 7th message, the mark is described first by the server Terminal distribution.

In conjunction with second of possible realization method of fourth aspect, in the 4th kind of possible realization method, if described When carrying the mark of the first terminal in five message or the 8th message, the mark is described by first core network entity First terminal distributes.It is described to be identified as institute if carry the mark of the first terminal in the 5th message or the 8th message State two identity of layer or the temporary identifications of digital form of first terminal.

In conjunction with second of possible realization method of fourth aspect, in the 5th kind of possible realization method, if described When carrying the mark of the first terminal in five message or the 8th message, the two identity mark of layer for being identified as the first terminal The temporary identifications of knowledge or digital form.

In conjunction with second of possible realization method of fourth aspect, in the 6th kind of possible realization method, if described It is described to be identified as the whole close to business of the first terminal when carrying the mark of the first terminal in three message or the 6th message End mark, two identity of layer or International Mobile Equipment Identity code IMEI.

In conjunction with second of possible realization method of fourth aspect, in the 7th kind of possible realization method, if described It is described to be identified as assumed name Pseudonym when carrying the mark of the first terminal in four message or the 7th message.

In conjunction with fourth aspect or the first or second or third or the 4th or the 5th or the 6th or the 7th of combination fourth aspect The possible realization method of kind, in the 8th kind of possible realization method, what is carried in the second message is identified as described first IMSI, IMEI or mobile station identity number MSISDN of terminal.

In conjunction with the 8th kind of possible realization method of fourth aspect, in the 9th kind of possible realization method, described second Message is that dynamic host configuration protocol DHCP finds message or DHCP request message.

The 9th kind of possible realization method in conjunction with fourth aspect further include in the tenth kind of possible realization method：

First core network entity is whole to described first by second terminal transmission IP address rental period configuration message End, the IP address rental period configure the preset duration for carrying that first core network entity is first terminal configuration in message Rental period information；

If the preset duration reaches and does not receive the renewed treaty request of the first terminal, with recycling allocated IP Location.

The 5th aspect of the embodiment of the present invention provides a kind of terminal, including：

Transmit-Receive Unit, for initiating first message and second terminal foundation to the second terminal in the network coverage Connection；And second message to the first core network entity sent by the second terminal to apply for obtaining IP address, described the The mark of the terminal is carried in two message, so that first core network entity identifies the end according at least to the mark End is the terminal distribution IP address；

Communication unit, for after the Transmit-Receive Unit obtains IP address, being led to network by the second terminal Letter.

In the first possible realization method of first aspect, the Transmit-Receive Unit is additionally operable to through the second terminal And first core network entity executes the verification process with server, in verification process, the Transmit-Receive Unit passes through described Second terminal sends third message to first core network entity, and the mark of the terminal is carried in the third message Know, so that first core network entity preserves the correspondence of the international mobile subscriber identity IMSI of the mark and the terminal Relationship；Or

The Transmit-Receive Unit is additionally operable to execute and server by the second terminal and first core network entity Verification process, in verification process, the Transmit-Receive Unit receives the 4th message, and the institute of the terminal is carried in the 4th message Mark is stated, and the 4th message is sent to institute by the server by first core network entity and the second terminal Transmit-Receive Unit is stated, so that first core network entity preserves the correspondence of the IMSI of the mark and the terminal；Or

The Transmit-Receive Unit is additionally operable to execute and server by the second terminal and first core network entity Verification process, in verification process, the Transmit-Receive Unit reception is sent out by first core network entity by the second terminal The 5th message sent carries the mark of the terminal in the 5th message, and first core network entity is preserved The correspondence of the IMSI of the mark and the terminal；Or

The Transmit-Receive Unit is additionally operable to execute the certification with server by the second terminal and the second core network entity Process, in verification process, the Transmit-Receive Unit sends the 6th message to second core net reality by the second terminal Body carries the mark of the terminal in the 6th message, so that second core network entity is in first core Network entity creates the correspondence of the IMSI of the mark and the terminal, or so that second core network entity to described the One core network entity sends the IMSI of the mark and the terminal, so that first core network entity preserves first mark Know the correspondence with the IMSI of the terminal；Or

The Transmit-Receive Unit is additionally operable to execute the certification with server by the second terminal and the second core network entity Process, in verification process, the Transmit-Receive Unit carries the first terminal for receiving the 7th message in the 7th message The mark, and the 7th message passes through second core network entity and the second terminal by the server and sends To the Transmit-Receive Unit, so that second core network entity creates the mark and the end in first core network entity The correspondence of the IMSI at end, or so that second core network entity to first core network entity send it is described mark and The IMSI of the terminal, so that first core network entity preserves the correspondence of the IMSI of the mark and the terminal； Or

The Transmit-Receive Unit is additionally operable to execute the certification with server by the second terminal and the second core network entity Process, in verification process, the Transmit-Receive Unit includes the first terminal for receiving the 8th message, the 8th message The mark, and the 8th message is sent to the transmitting-receiving list by second core network entity by the second terminal Member, so that second core network entity creates pair of the IMSI of the mark and the terminal in first core network entity It should be related to, or so that second core network entity sends the mark and the terminal to first core network entity IMSI, so that first core network entity preserves the mark and the correspondence of the terminal IMSI.

In conjunction with the first possible realization method of the 5th aspect, in second of possible realization method, if described the One core network entity preserves the correspondence of the IMSI of the mark and the first terminal, then the first terminal receives IP address by first core network entity according to the correspondence of the mark and the IMSI of the first terminal, described in identification After first terminal, distributed for the first terminal.

In conjunction with the first possible realization method of the 5th aspect, in the third possible realization method, if described the When carrying the mark of the terminal in four message or the 7th message, the mark is the terminal point by the server Match.

In conjunction with the first possible realization method of the 5th aspect, if described in being carried in the 5th message or the 8th message When the mark of terminal, the mark is the terminal distribution by first core network entity.

In conjunction with the first possible realization method of the 5th aspect, in the 5th kind of possible realization method, if described the When carrying the mark of the terminal in five message or the 8th message, two identity of layer for being identified as the terminal or number The temporary identifications of form.

In conjunction with the first possible realization method of the 5th aspect, in the 6th kind of possible realization method, if described the When carrying the mark of the terminal in three message or the 6th message, it is described be identified as the terminal close to service terminal mark, Two identity of layer or International Mobile Equipment Identity code IMEI.

In conjunction with the first possible realization method of the 5th aspect, in the 7th kind of possible realization method, if described the It is described to be identified as assumed name Pseudonym when carrying the mark of the first terminal in four message or the 7th message.

In conjunction with the first or second or third or the 4th or the 5th or the 6th or the 7th of the 5th aspect of the 5th aspect or combination The possible realization method of kind, in the 8th kind of possible realization method, the second message is dynamic host configuration protocol DHCP It was found that message or DHCP request message.

In conjunction with the 8th kind of possible realization method of the 5th aspect, in the 9th kind of possible realization method, described second IMSI, the IMEI for being identified as the first terminal or mobile station identity number MSISDN carried in message.

In conjunction with the 9th kind of possible realization method of the 5th aspect, in the tenth kind of possible realization method, the transmitting-receiving Unit is additionally operable to receive the IP address rental period configuration message that first core network entity is sent, and the IP address rental period configuration disappears The rental period information that the preset duration that first core network entity is terminal configuration is carried in breath, so as to first core Network entity recycles allocated IP address when the preset duration reaches and does not receive the renewed treaty request of the terminal.

The 6th aspect of the embodiment of the present invention provides a kind of terminal, including：

Transmit-Receive Unit, the first message that the first terminal for receiving not for the network coverage is sent out are established and described the The connection of one terminal；And the second message that the first terminal is sent is received, in the second message eventually comprising described first The IMSI and mark at end；

Storage unit, the correspondence for preserving the IMSI and mark；

The first IP address that the Transmit-Receive Unit is additionally operable to receive the first terminal obtains request message, the first IP It includes the mark that address, which obtains in request message, according to the correspondence of the IMSI and mark, is sent to core network entity Second IP address obtains request message, and second IP address obtains in request message and carries the IMSI, so that the core Heart network entity distributes IP address according to the IMSI of the first terminal for the first terminal；And receive the core net reality The IP address that body returns, the first terminal is sent to by the IP address.

In the first possible realization method of the 6th aspect, the two identity mark of layer for being identified as the first terminal Know.

The 7th aspect of the embodiment of the present invention provides a kind of terminal, including：

First Transmit-Receive Unit, for initiating first message to mobile management entity, the company with core network entity is established in request It connects；Receive the second message that the mobile management entity returns, wherein the core network entity is carried in the second message Address information；

Second Transmit-Receive Unit, for receiving the certification request for being not in the first terminal of the network coverage and sending；According to described The address information of core network entity sends the certification request of the first terminal to the core network entity, so as to described One terminal completes verification process by the core network entity, with server.

In the first possible realization method of the 7th aspect, the first message is PDN connection request messages, described Second message is PDN connection received messages；Or

In second of possible realization method of the 7th aspect, the protocol configuration option PCO ginsengs in the second message The address information of the core network entity is carried in number, and the address information of the core network entity is matched by the core network entity It sets in the PCO parameters.

Eighth aspect of the embodiment of the present invention provides a kind of core network entity, including：

Transmit-Receive Unit, for initiating the to the second terminal in the network coverage in the first terminal for being not in the network coverage One message and the second terminal are established after connection, are received the first terminal and are used for by what the second terminal was sent Application obtains the second message of IP address, and the mark of the first terminal is carried in the second message；

Allocation unit, for identifying the first terminal according at least to the mark, with distributing IP for the first terminal Location is communicated by the second terminal with network so that after the first terminal obtains IP address.

In the first possible realization method of eighth aspect, the Transmit-Receive Unit is additionally operable to：

In conjunction with the first possible realization method of eighth aspect, in second of possible realization method, in the receipts After bill member preserves the correspondence of the IMSI of the first identifier and the first terminal, the allocation unit is additionally operable to root According to the correspondence of the mark and the IMSI of the first terminal, the first terminal is identified, distributed for the first terminal IP address.

Second of possible realization method in conjunction with eighth aspect further include in the third possible realization method：

Recovery unit, for sending IP address rental period configuration message to the first terminal, institute by the second terminal State the rent that the preset duration that first core network entity is first terminal configuration is carried in IP address rental period configuration message Phase information；If the preset duration reaches and do not receive the renewed treaty request of the first terminal, allocated IP address is recycled.

Implement the embodiment of the present invention, has the advantages that：

The first terminal of the network coverage is not in by being connected with the second terminal in the network coverage, then passes through described Two terminals send the message for carrying the first terminal mark to first core network entity, and first core network entity is just The first terminal can be identified according to described, and distribute IP address for the first terminal, so that described the One terminal can use the IP address obtained, access network by the second terminal, communicated with network, solve and do not locate Network can be also accessed in the terminal of the network coverage, completed and the problem of network communication.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is the flow diagram of the first embodiment of communication means of the present invention；

Fig. 2 is the flow diagram of the second embodiment of communication means of the present invention；

Fig. 3 is the flow diagram of the 3rd embodiment of communication means of the present invention；

Fig. 4 is the flow diagram of the fourth embodiment of communication means of the present invention；

Fig. 5 is the flow diagram of the 5th embodiment of communication means of the present invention；

Fig. 6 is the flow diagram of the sixth embodiment of communication means of the present invention；

Fig. 7 is the flow diagram of the 7th embodiment of communication means of the present invention；

Fig. 8 is the flow diagram of the 8th embodiment of communication means of the present invention；

Fig. 9 is the flow diagram of the 9th embodiment of communication means of the present invention；

Figure 10 is the flow diagram of the tenth embodiment of communication means of the present invention；

Figure 11 is the flow diagram of the 11st embodiment of communication means of the present invention；

Figure 12 is the flow diagram of the 12nd embodiment of communication means of the present invention；

Figure 13 is the composition schematic diagram of the first embodiment of terminal of the present invention；

Figure 14 is the composition schematic diagram of the second embodiment of terminal of the present invention；

Figure 15 is the composition schematic diagram of the 3rd embodiment of terminal of the present invention；

Figure 16 is the composition schematic diagram of the fourth embodiment of terminal of the present invention；

Figure 17 present invention is the composition schematic diagram of the first embodiment of core network entity；

Figure 18 is the composition schematic diagram of the second embodiment of core network entity of the present invention；

Figure 19 is the composition schematic diagram of the 3rd embodiment of core network entity of the present invention.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts Embodiment shall fall within the protection scope of the present invention.

Fig. 1 is please referred to, is the flow diagram of the first embodiment of communication means of the present invention, it is in the present embodiment, described Method includes the following steps：

S101, the first terminal for being not in the network coverage initiate first message to the second terminal in the network coverage, and The second terminal establishes connection.

Wherein, the first message can be PDN connection request messages, or other for asking to establish connection Message.

Specifically, the first terminal can be the terminal for being originally in the network coverage, but currently losing the network coverage, It can be the terminal for not accessing network always, not be limited in any way herein.

S102, the first terminal send second message to apply obtaining by the second terminal to the first core network entity IP address is taken, the mark of the first terminal is carried in the second message, so that first core network entity at least root The first terminal is identified according to the mark, and IP address is distributed for the first terminal.

Specifically, first core network entity can be carried in the second message can be with described the first of Direct Recognition The mark of terminal, such as international mobile subscriber identity（International Mobile Subscriber Identification Number, abbreviation IMSI）Or International Mobile Equipment Identity code（International Mobile Equipment Identity, abbreviation IMEI）Deng.The second message is to apply for dhcp message or the request carrying of IP address The GTP-C message of resource modifying, it is which equipment needs obtains that the first core network entity described in this way, which can be identified accurately, IP address is taken, to distribute IP address for the first terminal, preserves the IP address and first terminal mark of the distribution Between correspondence so that the first terminal can pass through the IP address of acquisition access network.

Of course, it is possible to identify there are many marks of the first terminal, know otherwise can also there are many, both can be with Directly by can be identified with the mark of Direct Recognition, it is preferable that the mark carried in the second message can be described IMSI, IMEI or MSISDN of first terminal.It is, of course, also possible to pass through the identity information of recessive mark and the first terminal It is associated correspondence, thus when distributing IP address, if the mark of the first terminal is got, and eventually by described first The mark and the identity information of the first terminal at end identify the first terminal such as the correspondence of IMSI by IMSI, from And which terminal distribution IP address knows is for.Identity information herein can also be the first terminal IMSI, IMEI or MSISDN.Need only assure that identity information is different with mark.

Preferably, if being sent out to the first core network entity by the connection established with the second terminal in the first terminal Second message is sent so that before applying obtaining IP address, the first terminal is real by the second terminal and first core net Body executes the verification process with server, and in verification process, the first terminal sends third by the second terminal and disappears First core network entity is ceased, the mark of the first terminal is carried in the third message, so that described first Core network entity preserves the correspondence of the international mobile subscriber identity IMSI of the mark and the first terminal；In reality In, the first core network entity can be the entity for having AAA proxy and PGW functions, therefore, in this case, this Locate the general designation that first core network entity is AAA proxy and PGW, or the PGW with AAA Proxy functions；Or

The first terminal is executed by the second terminal and first core network entity and was authenticated with server Journey, in verification process, the first terminal receives the 4th message, and the described of the first terminal is carried in the 4th message Mark, and the 4th message be sent to by first core network entity and the second terminal by the server it is described First terminal, so that first core network entity preserves the correspondence of the IMSI of the mark and the first terminal； In practical application, the first core network entity can be AAA proxy or PGW, since AAA proxy and PGW are in hardware realization, Often as the Different Logic part of same physical entity, therefore, in this case, the first core network entity described herein For the general designation of AAA proxy and PGW, or the PGW with AAA Proxy functions；Or

The first terminal is executed by the second terminal and first core network entity and was authenticated with server Journey, in verification process, the first terminal receives the sent by the second terminal by first core network entity Five message carry the mark of the first terminal in the 5th message, and first core network entity preserves State the correspondence of the IMSI of mark and the first terminal；In this case, the first core network entity described herein is AAA The general designation of proxy and PGW, or the PGW with AAA Proxy functions；Or

The first terminal executes the verification process with server by the second terminal and the second core network entity, In verification process, the first terminal by the second terminal send the 6th message to second core network entity, it is described The mark of the first terminal is carried in 6th message, so that second core network entity is in first core net reality Body creates the correspondence of the IMSI of the mark and the first terminal, or so that second core network entity to described the One core network entity sends the IMSI of the mark and the first terminal, so that first core network entity preserves described the The correspondence of the IMSI of one mark and the first terminal；In this case, the first core network entity refers to PGW herein, the Two core network entities refer to AAA proxy；Or

The first terminal executes the verification process with server by the second terminal and the second core network entity, In verification process, the first terminal receives the 7th message, and the mark of the first terminal is carried in the 7th message, And the 7th message is sent to described first by the server by second core network entity and the second terminal Terminal, so that second core network entity creates the mark and the first terminal in first core network entity The correspondence of IMSI, or so that second core network entity to first core network entity send it is described mark and it is described The IMSI of first terminal is closed so that first core network entity preserves the corresponding of the IMSI of the mark and the first terminal System；In this case, the first core network entity refers to PGW herein, and the second core network entity refers to AAA proxy；Or

The first terminal executes the verification process with server by the second terminal and the second core network entity, In verification process, the first terminal receives the 8th message, and the 8th message includes the mark of the first terminal, and 8th message is sent to the first terminal by second core network entity by the second terminal, so that described Two core network entities create the correspondence of the IMSI of the mark and the first terminal in first core network entity, or So that second core network entity sends the IMSI of the mark and the first terminal to first core network entity, with Toilet states the first core network entity and preserves the mark and the correspondence of the first terminal IMSI.In this case, this Locate the first core network entity and refer to PGW, the second core network entity refers to AAA proxy.

Above-mentioned so that first core net preserves the mark of the first terminal with the IMSI's of the first terminal In the method for correspondence, first terminal and server are authenticated interaction, and the first core network entity or the second core net are real Body can obtain the IMSI marks of the first terminal, such as receive in the identity information that first terminal is sent by second terminal Include the IMSI of first terminal, or obtain the IMSI of first terminal from the message that server receives, and then passes through different sides Method realizes the purpose of the mark and the correspondence of the IMSI of the first terminal that preserve the first terminal.

Above-mentioned server can be aaa server.

If first core network entity preserves the correspondence of the IMSI of the mark and the first terminal, institute The IP address for stating first terminal reception is identified according to described with the IMSI's of the first terminal by first core network entity Correspondence after identifying the first terminal, distributes for the first terminal.

If carry the mark of the first terminal in the 4th message or the 7th message, the mark is by described Server distributes for the first terminal.

If carry the mark of the first terminal in the 5th message or the 8th message, the mark is by described first Core network entity distributes for the first terminal.

It is described to be identified as described first if carry the mark of the first terminal in the 5th message or the 8th message Two identity of layer of terminal or the temporary identifications of digital form.

It is described to be identified as described first if carry the mark of the first terminal in the third message or the 6th message Terminal close to service terminal mark, two identity of layer or International Mobile Equipment Identity code IMEI.

It is described to be identified as assumed name if carry the mark of the first terminal in the 4th message or the 7th message Pseudonym。

Preferably, the second message can be that dynamic host configuration protocol DHCP finds message or DHCP request message.

S103 is communicated by the second terminal with network after the first terminal obtains IP address.

Preferably, after the first terminal obtains IP address, it can also receive what first core network entity was sent The IP address rental period configures message, and it is described first whole that first core network entity is carried in the IP address rental period configuration message The rental period information for holding the preset duration of configuration, so that first core network entity is reached in the preset duration and does not receive institute When stating the renewed treaty request of first terminal, allocated IP address is recycled.

It is highly preferred that the preset duration can be shorter than the normal IP address rental period, the rental period of general IP address is 8 days, then The rental period that can be first terminal distribution IP address is 1 hour；If first core network entity does not receive described First terminal it is new re-rent request message, then when the IP address rental period is expired, recoverable first core network entity is described The IP address of first terminal distribution, uses for other-end.

In the present embodiment, the first terminal for being not in the network coverage is connected with the second terminal in the network coverage, then It is sent by the second terminal and carries the message of first terminal mark to first core network entity, first core Heart network entity can identify the first terminal according to described, and distribute IP address for the first terminal, to Allow the first terminal using the IP address obtained, network accessed by the second terminal, is communicated with network, It solves and is not in the terminal of the network coverage and can also access network, complete and the problem of network communication.

It is transformed for existing facility information interactive process in the following, illustrating, the network coverage is not in realize Accessing terminal to network, the effect with network communication.In the examples below, the terminal for being not in the network coverage can be described as remotely Terminal remote UE, the terminal in the network coverage can be described as link terminal relayUE, packet gateway PGW and AAA agency's clothes Device AAA proxy be engaged in hardware realization, can both integrate setting, can also be separately provided, the present invention does not make any It limits.

Fig. 2 is please referred to, is the flow diagram of the second embodiment of communication means of the present invention, it is in the present embodiment, described Method includes the following steps：

S201, remote terminal remote UE send PDN connection request messages, and request is established with link terminal relayUE PDN connections.

S202, remote UE send authentication request message to aaa server AAA Server, so that aaa server executes Verification process.

The close of remote UE is carried in the authentication request message that remote UE are sent to relay UE in this process Service identification prose UE ID, certainly, mark herein can also be two identity of layer such as MAC Address or digital form Identity such as IMEI, MSISDN etc., and then relay UE are sent out to packet gateway and AAA proxy server PGW/AAA proxy Carried when sending authentication request message remote UE close to service identification prose UE ID, two identity of layer such as MAC Address Or the identity of digital form such as IMEI, MSISDN.MAC Address can be in different agreement with the authentication request message of transmission Layer, if remote UE and relay UE carry out message transmission using broadcast mode, the layer two that source address is remote UE is marked Know, then relay UE can obtain the layer two mark, and be carried in the authentication request message sent to PGW/AAA proxy.

The authentication request message can be the EAP Response/Identity during EAP-AKA/EAP-AKA ', should The EAP Request/Identity message trigger remote UE that message is sent from relay UE to remote UE are sent, this disappears Breath is sent to AAA server by PGW/AAA proxy, and optional PGW/AAA proxy can handle message, will locate Message after reason is sent to AAA server, made by processing can be to delete certain parameters.

S203, PGW/AAA proxy preserve prose UE ID（The corresponding step S202 marks can also be in step S202 Other identifier）, and the identity of prose UE ID and remote UE are preserved, such as the correspondence of IMSI, wherein The IMSI of remote UE is included in the information that remote UE are interacted with AAA server in verification process, such as EAP In Response/Identity, it is of course also possible to be after the PDN connection request messages that relay UE receive remote UE, Before initiating certification to aaa server, it is desirable that remote UE provide its IMSI for being used when certification.

S204, certification success after, relay UE to remote terminal return Packet Data Network (Packet Data Network, Abbreviation PDN) connection received message, that is, PDN connection accept message.

S205, remote terminal send dynamic host configuration protocol and find message, that is, DHCPDISCOVER message, PGW points of request With IP address, the prose UE ID of remote UE are carried in DHCPDISCOVER message（It is carried in corresponding step S202 Mark then also carry IMEI in DHCPDISCOVER herein as carried IMEI in S202）, so that PGW identifies the DHCP Process is that the process of IP address is distributed for remote UE.Optionally, it also can only be carried in DHCODISCOVER message " long-range whole Hold label " remote UE tag are the terminal relayed for identifying the remote UE.

S206, relay UE send DHCPDISCOVER to PGW.

S207, PGW identify remote according to the correspondence of the IMSI of prose UE ID and the remote UE of preservation UE is that remote UE distribute IP address.

S208, PGW return to dynamic host configuration protocol response message DHCPOFFER to relay UE, wherein carrying PGW is The IP address of remote UE distribution.

S209, relay UE return to DHCPOFFER to remote UE.

S210 then returns to dhcp request message when remote UE receive the IP address of PGW returns DHCPREQUEST message carries the prose UE ID of remote UE within the message（The mark carried in corresponding step S202 Know）.

DHCPREQUEST message is sent to PGW by S211, relay UE.

S212, PGW identify remote UE according to prose UE ID, preserve the IP address of the distribution with remote UE's Incidence relation between IMSI.

S213, PGW return to dynamic host configuration protocol confirmation message DHCPACK to relay UE.

DHCPACK message is sent to remote UE by S214, relay UE.

S215, remote UE are communicated by relay UE access networks, transmission data packet.

It should be noted that because DHCPDISCOVER DHCPOFFER DHCPREQUEST be one group of message, therefore If the DHCP request message is associated with remote UE known to PGW in S205, prose UE ID can not be carried in S210.

In addition, PGW by DHCPDISCOVER message close to service identification and PGW preserve close to service identification with The correspondence of the IMSI of remote UE identifies that the process is that the process of IP address is distributed for remote UE, then PGW can be with In DHCPACK message suitable rental period, rental period such as more shorter than the normal IP address rental period, general ip are configured for remote UE The rental period of address is 8 days, then can be the rental period that remote UE distribute IP address is 1 hour；If PGW（DHCP Server） Do not receive remote UE it is new re-rent request message, then when the IP address rental period is expired, PGW is recoverable for UE points of remote The IP address matched.

Fig. 3 is please referred to, is the flow diagram of the 3rd embodiment of communication means of the present invention, it is in the present embodiment, described Method includes the following steps：

S301, remote UE send PDN connection request messages, and request is established PDN with relay UE and connect.

S302, remote UE send authentication request message to aaa server AAA Server, so that aaa server executes Verification process.The process can be the verification process executed using EAP-AKA/EAP-AKA ' agreements, the authentication request message Can be the EAP Response/Identity, the EAP which sends from relay UE to remote UE during this Request/Identity message triggers.

S303, aaa server return authentication success response message to PGW/AAA proxy.

S304, PGW/AAA proxy generate association identification after receiving certification success response.Preserve association identification and The identity information of remote UE, as the IMSI of the correspondence of IMSI, remote UE is included in remote UE in verification process In the information interacted with AAA server, if PGW/AAA proxy in the EAP Response/Identity that receive by obtaining It takes, naturally it is also possible to be PGW/AAA proxy from the message that AAA server are received, as obtained in certification success response message It takes.

The form of the association identification can be the random digit of mark remote UE, or mark remote UE's The mark of temporary MAC address form.

The certification success response message of association identification is sent to relay UE by S305, PGW/AAA proxy.

The certification success response message of association identification is sent to remote UE by S306, relay UE.

Wherein, when forwarding certification success response message by relay UE, relay UE also can save association identification.

This patent does not limit the type of message for sending association identification, i.e., can also be sent out by the message of other in verification process It send to remote UE.

S307, relay UE return to PDN connection accept message to remote UE.

S308, remote UE obtain IP address by dhcp process application, DHCPDISCOVER message are initiated, wherein taking The association identification received with step S306.

The DHCPDISCOVER message for carrying association identification is sent to PGW by S309, relay UE.

S310, PGW identify remote UE according to the correspondence of the association identification and the IMSI of remote UE, determine The dhcp process is that the process of IP address is distributed for remote UE, is that remote UE distribute IP address.

S311, PGW return to DHCPOFFER message to relay UE, wherein carrying the IP address of distribution.

IP address is sent to remote UE by S312, relay UE by DHCPOFFER message.

S313, remote UE select the IP address in DHCPOFFER message for its IP address, send DHCPREQUEST and disappear Breath, wherein carrying association identification.

The DHCPREQUEST message for carrying association identification is sent to PGW by S314, relay UE.

S315, PGW preserve the incidence relation between the IP address of the distribution and the IMSI of remote UE.

S316, PGW return to DHCPACK message to relay UE.

S317, relay UE send DHCPACK message to remote UE.

S318, remote UE are communicated by relay UE access networks, transmission data packet.

Wherein, the association identification and remote that PGW passes through association identification and PGW preservations in DHCPDISCOVER message The correspondence of the IMSI of UE identifies that the process is that the process of IP address is distributed for remote UE, then PGW can be In DHCPOFFER or DHCPACK message suitable rental period, rent such as more shorter than the normal IP address rental period are configured for remote UE Phase, rental period of general IP address are 8 days, then can be the rental period that remote UE distribute IP address are 1 hour；If PGW （DHCP Server）Do not receive remote UE it is new re-rent request message, then when the IP address rental period is expired, PGW is recoverable For the IP address of remote UE distribution.

It should be noted that because DHCPDISCOVER DHCPOFFER DHCPREQUEST be one group of message, therefore If the DHCP request message is associated with remote UE known to PGW in S310, association identification can not be carried in S313.

In the present embodiment, another possible implementation is to preserve association identification by relay UE in S306, and protect The correspondence of association identification and the identity information (such as MAC Address) of remote UE is deposited, relay UE pass through remote UE The certification message of transmission, if EAP Response/Identity obtain the MAC Address of remote UE,.Follow-up remote UE and Relay UE transmit message using broadcast mode, and relay UE can recognize that remote UE by the MAC Address in message, in this way Association identification can be no longer carried when remote UE send DHCPDISCOVER/DHCPREQUEST message, it is only necessary to relay UE directly carries association identification when sending DHCPDISCOVER message to AAA proxy/PGW.

Fig. 4 is please referred to, is the flow diagram of the fourth embodiment of communication means of the present invention.In the present embodiment, described Method includes the following steps：

S401, remote UE send PDN connection request messages, and request is established PDN with relay UE and connect.

S402, remote UE send authentication request message to AAA Server, so that aaa server executes verification process. The process can be the verification process executed using EAP-AKA/EAP-AKA ' agreements, and the authentication request message can be the process In EAP Response/Identity, the EAP Request/ which sends from relay UE to remote UE Identity message triggers.

S403, AAA server generate the mark assumed name Pseudonym for identifying remote UE, and pass through PGW/AAA The mark is sent to relay UE by proxy and relay UE, and in practical operation, which can pass through EAP-AKA/EAP- The EAP Request/AKA'-Challenge message of AKA ' is sent to UE.

S404, PGW/AAA proxy preserve the correspondence of the identity information IMSI of Pseudonym and remote UE. The IMSI of remote UE is included in the information that remote UE are interacted with AAA server in verification process, such as PGW/AAA By being obtained in the EAP Response/Identity that receive, PGW/AAA proxy receive Pseudonym and preserve therewith proxy Correspondence, naturally it is also possible to be PGW/AAA proxy from the message that AAA server are received, such as EAP Request/ It is obtained together with Pseudonym in AKA'-Challenge message.

The message that S405, PGW/AAA proxy return to carrying Pseudonym gives relay UE.

The message that S406, relay UE return to carrying Pseudonym gives remote UE.

S407, remote UE preserve Pseudonym.

S408, relay UE return to PDN connection accept message to remote UE.

S409, remote UE obtain IP address by dhcp process application, DHCPDISCOVER message are initiated, wherein taking Band Pseudonym.

Preferably, it if DHCPDISCOVER message requires the length and capacity of field, at this moment can use The clipped form of Pseudonym or the variant of Pseudonym, last eight bytes for such as only retaining Pseudonym include In dhcp message, it can thus meet the requirement that dhcp message transmits the identification information field.

DHCPDISCOVER message comprising Pseudonym is sent to PGW by S410, relay UE.

S411, PGW identify remote UE according to the correspondence of the IMSI of Pseudonym and remote UE, and determining should Dhcp process is that the process of IP address is distributed for remote UE, is that remote UE distribute IP address.

S412, PGW return to DHCPOFFER message to relay UE, wherein carrying the IP address of distribution.

DHCPOFFER message comprising IP address is sent to remote UE by S413, relay UE.

S414, remote UE select the IP address in DHCPOFFER message for its IP address, send DHCPREQUEST and disappear Breath, wherein Pseudonym is carried, the variant that can also carry Pseudonym corresponding with step 409 or truncated form.

The DHCPREQUEST message for carrying Pseudonym is sent to PGW by S415, relay UE.

S416, PGW preserve the incidence relation between the IP address of the distribution and the IMSI of remote UE.

S417, PGW return to DHCPACK message to relay UE.

S418, relay UE send DHCPACK message to remote UE.

S419, remote UE are communicated by relay UE access networks, transmission data packet.

It should be noted that because DHCPDISCOVER DHCPOFFER DHCPREQUEST be one group of message, therefore If the DHCP request message is associated with remote UE known to PGW in S411, association identification can not be carried in S414.

Same the various embodiments described above, PGW can be suitable for remote UE configurations in DHCPOFFER or DHCPACK message Rental period so that remote UE do not have to carry out it is new re-rent apply, when the IP address rental period is expired, withdrawal is PGW in time The IP address of remote UE distribution.

It should be noted that PGW/AAA proxy are executing above-mentioned communication means second to specific in fourth embodiment When operation, the IMSI of remote UE can be received by AAA proxy, and receive the mark of remote UE or generate remote The mark of UE, then creates the correspondence of the mark and IMSI of remote UE on PGW, or does not create remote UE's The correspondence of mark and IMSI, but the mark of remote UE and IMSI are directly sent to PGW, remote is preserved by PGW The mark of UE and the correspondence of IMSI are finally according to the mark of remote UE and the correspondence of IMSI by PGW Remote UE distribute IP address, in the whole process, if mark is generated by AAA server or AAA proxy, can unite One is sent to remote UE by AAA proxy by relay UE.

Certainly, other than obtaining IP address above by the mode of dhcp message and accessing network, can also directly exist After remote UE are passed through by relay UE and PGW/AAA the proxy certifications initiated to AAA server, by PGW/AAA Proxy receives the certification success response message that AAA server are sent, and for certification by UE, that is, remote UE with distributing IP Location, then remote UE are sent to by certification success response message, in this way, remote UE are with can using the IP of distribution Location the communication process with network is completed by relay UE access networks.In addition to this it is possible to pass through relay UE, movement Resource bearing process between management entity, PGW/AAA proxy carries the mark of remote UE, such as IMSI or IMEI or only Indicate that the UE is by the mark of relay UE, to realize that PGW/AAA proxy are the purpose that remote UE distribute IP address. Specifically it can refer to Fig. 5.

Fig. 5 is please referred to, is the flow diagram of the 5th embodiment of communication means of the present invention.In the present embodiment, described Method includes the following steps：

S501, remote UE send PDN connection request messages, and request is established PDN with relay UE and connect.

S502, remote UE send certification request by relay UE, MME, PGW/AAA proxy to AAA Server Message, so that aaa server executes verification process.

S503, after certification passes through, relay UE return to PDN connections and accept message to remote UE.

S504, relay UE initiate bearing resource modification request to MME, PGW, for asking disappearing for bearing resource modification The mark of remote UE is carried in breath, in this process, the message that relay UE, MME, PGW information exchange are related to successively may be used To be Request Bearer Resource Modification message, Bearer Resource Command message.It carries The mark of remote UE can be IMSI, IMEI or MSISDN etc., or the mark is only needed to show that remote UE are quilt The UE of relaying.

S505, PGW change the mark received in the process according to bearing resource, are that remote UE distribute IP address.

S506, PGW, MME, relay UE complete bearing resource modification according to existing bearing resource modification process, wherein The IP address that PGW is remote UE distribution is carried in message for completing bearing resource modification.In this process, PGW, The message that MME, relay UE information exchanges are related to can be Update Bearer Request message, Downlink successively NAS transport message.

The message that S507, relay UE return to carrying IP address gives remote UE, which can be Prose Bearer Message.

S508, remote UE are communicated by relay UE access networks, transmission data packet.

Fig. 6 is please referred to, is the flow diagram of the sixth embodiment of communication means of the present invention.In the present embodiment, described Method includes the following steps：

S601, the second terminal reception in the network coverage do not disappear for the first terminal of the network coverage is sent out first Breath establishes the connection with the first terminal.

S602, the second terminal receive the second message that the first terminal is sent, and include institute in the second message The IMSI and mark of first terminal are stated, the second terminal preserves the IMSI and the correspondence of mark.

S603, the first IP address that the second terminal receives the first terminal obtain request message, the first IP It includes the mark that address, which obtains in request message, and the second terminal is according to the correspondence of the IMSI and mark, to core Heart network entity sends the second IP address and obtains request message, and second IP address obtains in request message and carries the IMSI, So that IMSI of the core network entity according to the first terminal, IP address is distributed for the first terminal.

S604, the second terminal receive the IP address that the core network entity returns, the IP address are sent to institute State first terminal.

In practical applications, core network entity can be the entity for having AAA proxy and PGW functions, therefore, such In the case of, the first core network entity described herein is the general designation of AAA proxy and PGW, or with AAA Proxy functions PGW；

Fig. 7 is please referred to, is the flow diagram of the 7th embodiment of communication means of the present invention.In the present embodiment, described Method includes the following steps：

S701, remote UE send PDN connection request messages, and request is established PDN with relay UE and connect.

S702, remote UE send authentication request message to relay UE.The process can use EAP-AKA/EAP- The verification process that AKA ' agreements execute, the authentication request message can be the EAP Response/Identity during this, should The EAP Request/Identity message triggers that message is sent from relay UE to remote UE.

In the process, the interaction between remote UE and relay UE can by broadcast message communications, broadcast message Source address is the layer double-address information of remote UE（Such as MAC Address）, thus relay UE, which can be parsed, obtains remote UE's Layer double-address information.

S703, relay UE preserve the identity information of the MAC Address and remote UE of remote UE（IMSI）Correspondence Relationship.Relay UE from the EAP Response/Identity that remote UE are sent in verification process by obtaining Remote The identity information of UE（IMSI）, therefore relay UE can save the layer double-address and identity information of remote UE（IMSI）Pair It should be related to.

The authentication request message that remote UE are sent is sent to AAA services by S704, relay UE by AAA proxy Device, so that aaa server executes verification process.

S705, after certification passes through, aaa server passes through AAA proxy/ and relay UE return authentication success response message To relay UE, and it is sent to remote UE.

S706, relay UE return to PDN connection accept message to remote UE.

S707, remote UE obtain IP address by dhcp process application, send DHCPDISCOVER message to relay UE, wherein including the MAC Address of remote UE, relay UE can parse the MAC Address for obtaining remote UE.

S708, relay UE are added according to the correspondence of MAC Address and IMSI in DHCPDISCOVER message The IMSI of remote UE is sent to PGW by IMSI, so that PGW identification remote UE.

S709, PGW according to the IMSI of remote UE identify, identify remote UE, determine the dhcp process be for The process of remote UE distribution IP address, is that remote UE distribute IP address.

S710, PGW return to DHCPOFFER message to relay UE, wherein carrying the IP address of distribution.

IP address is sent to remote UE by S711, relay UE by DHCPOFFER message.

S712, remote UE select the IP address in DHCPOFFER message for its IP address, are sent to PGW DHCPREQUEST message walks the message with S707 and is first sent to relay UE, and relay UE know this according to MAC Address Message is the message that remote UE are sent.

S713, relay UE include the identity information IMSI of remote UE in DHCPREQUEST message, and will DHCPREQUEST is sent to PGW.

S714, PGW preserve the incidence relation between the IP address of the distribution and the IMSI of remote UE.

S715, PGW return to DHCPACK message to relay UE.

S716, relay UE send DHCPACK message to remote UE.

S717, remote UE are communicated by relay UE access networks, transmission data packet.

It should be noted that because DHCPDISCOVER DHCPOFFER DHCPREQUEST be one group of message, therefore If the DHCP request message is associated with remote UE known to PGW in S709, association identification can not be carried in S712.

Fig. 8 is please referred to, is the flow diagram of the 8th embodiment of communication means of the present invention.In the present embodiment, described Method includes the following steps：

S801, second terminal initiate first message to mobile management entity, and the connection with core network entity is established in request.

S802, the second terminal receive the second message that the mobile management entity returns, wherein the second message The middle address information for carrying the core network entity.

S803, the second terminal, which receives, is not in the certification request that the first terminal of the network coverage is sent.

S804, the second terminal is according to the address information of the core network entity to described in core network entity transmission The certification request of first terminal completes verification process so that the first terminal is by the core network entity with server.

In practical applications, core network entity can be the entity for having AAA proxy and PGW functions, therefore, such In the case of, core network entity described herein is the general designation of AAA proxy and PGW, or the PGW with AAA Proxy functions； In the present embodiment, it mainly solves address of the link terminal i.e. second terminal due to not knowing about core network entity, can not be successfully The problem of completing relay function, by carrying out information exchange with mobile management entity, so that core network entity passes through movement Management entity return address or the address that core net corpse is obtained from mobile management entity pass through in remote terminal needs in this way When link terminal relay access network network, the verification process of remote terminal can be smoothly completed.

Fig. 9 is please referred to, is the flow diagram of the 9th embodiment of communication means of the present invention.In the present embodiment, described Method includes the following steps：

S901, relay UE send PDN connection request messages, and request is established and connect with the PDN of core network entity PGW.

S902, PDN connection establish request and are sent to the mobile management entity MME for servicing the relay UE, and MME is by existing PDN establishment of connections flow is initiated to establish the process of PDN connections to core network entity PGW, completes to connect with the PDN of core network entity Connect the process of foundation.The PGN connections established are used for junction traffic, then during mobile management entity can be used for specified PGW foundation After PDN connections.

S903, mobile management entity send PDN connection received messages to UE, core are added in PDN connection received messages The address information of network entity AAA proxy, is sent to relay UE.MME is obtained during the PDN with PGW connect foundation The addresses AAA proxy.In practical applications, AAA proxy and PGW be often same physical entity Different Logic part or PGW is the PGW for having AAA Proxy functions, therefore MME can obtain the address of PGW can also obtain the ground of AAA proxy Location.

S904, relay UE preserve the address of AAA proxy.

S905, when relay UE receive the certification request for the remote terminal for being not in the network coverage, relay UE roots Authentication request message is sent to AAA proxy according to the address information of the AAA proxy, so that AAA proxy ask certification It asks and is sent to aaa server, complete the verification process of remote terminal and aaa server.

S906, relay UE receive the certification success response message that aaa server returns by AAA proxy, complete to recognize Card process.

In the present embodiment, the related procedure that the mobile management entity for returning to core network entity address has been described in detail, In actual scene, relay UE generally also need to connect with mobile management entity by base station, since the information between three is handed over Mutually more mature, details are not described herein again.

Figure 10 is please referred to, is the flow diagram of the tenth embodiment of communication means of the present invention.In the present embodiment, described Method includes the following steps：

S1001, relay UE send PDN connection request messages, and request is established and connect with the PDN of core network entity PGW.

S1002, PDN connection establish request and are sent to the mobile management entity MME for servicing the relay UE, and MME is by existing Flow is initiated to establish the process of PDN connections to core network entity PGW.The PDN connections established are used for junction traffic, then moving tube Reason entity can be established with specified PGW and be connect for the PDN of relaying.

Process is established in the PDN connections that S1003, core network entity PGW receive MME initiations, is returned to mobile management entity Response message configure the addresses AAA proxy to PCO parameters, which can be in existing PDN connection building process Create conversational response create session response message.In practical applications, AAA proxy and PGW are often same The Different Logic part of physical entity or PGW are the PGW for having AAA Proxy functions, therefore can be by the address of AAA proxy Configuration is in PCO parameters.

S1004, core network entity PGW, which are returned, carries the response messages of PCO parameters to mobile management entity.

S1005, after mobile management entity receives the response message of PGW returns, to terminal returning response message, which disappears Breath can be the PDN connection received messages in existing procedure, wherein comprising the PCO parameters received from PGW, PDN connection received messages It is sent to relay UE.

It should be noted that core network entity PGW is back to the message of mobile management entity and mobile management entity returns Message to relay UE is generally different message, but it carries PCO parameters.And mobile management entity usually also needs to It is communicated with relay UE by base station, but still will carry above-mentioned PCO parameters in its communication information.

S1006, relay UE parse PCO parameters, preserve the address of core network entity.

S1007, when relay UE receive the certification request for the remote terminal for being not in the network coverage, relay UE roots Authentication request message is sent to AAA proxy according to the address information of the AAA proxy, so that AAA proxy are by certification request It is sent to aaa server, completes the verification process of remote terminal and aaa server.

S1008, relay UE receive the certification success response message that AAA proxy are returned, and complete verification process.

Figure 11 is please referred to, is the flow diagram of the 11st embodiment of communication means of the present invention.In the present embodiment, institute The method of stating includes the following steps：

S1101 initiates first message in the first terminal for being not in the network coverage to the second terminal in the network coverage, After establishing connection with the second terminal, the first core network entity receives the first terminal and is sent by the second terminal For apply acquisition IP address second message.

Wherein, the mark of the first terminal is carried in the second message.

S1102, the first terminal is identified according at least to the mark, and IP address is distributed for the first terminal, so that After the first terminal obtains IP address, communicated with network by the second terminal.

Preferably, the first terminal is received in the first core network entity to be used to apply by what the second terminal was sent Before the second message for obtaining IP address, further include：

Preserved in first core network entity IMSI of the first identifier and the first terminal correspondence it Afterwards, first core network entity is according to the correspondence of the mark and the IMSI of the first terminal, identification described first Terminal distributes IP address for the first terminal.

Wherein, if carry the mark of the first terminal in the 4th message or the 7th message, the mark It is distributed for the first terminal by the server.

It is described to be identified as described first if carry the mark of the first terminal in the 5th message or the 8th message Two identity of layer of terminal.

The second message is that dynamic host configuration protocol DHCP finds message or DHCP request message.

Figure 12 is please referred to, is the flow diagram of the 12nd embodiment of communication means of the present invention.In the present embodiment, institute The method of stating includes the following steps：

S1201 initiates first message in the first terminal for being not in the network coverage to the second terminal in the network coverage, After establishing connection with the second terminal, the first core network entity receives the first terminal and is sent by the second terminal For apply acquisition IP address second message.

The mark of the first terminal is carried in the second message.

S1202, the first terminal is identified according at least to the mark, and IP address is distributed for the first terminal, so that After the first terminal obtains IP address, communicated with network by the second terminal.

S1203, first core network entity send IP address rental period configuration message described in by the second terminal First terminal.

It is the pre- of first terminal configuration that first core network entity is carried in the IP address rental period configuration message If the rental period information of duration.

S1204 is recycled allocated if the preset duration reaches and do not receive the renewed treaty request of the first terminal IP address.

Preferably, the preset duration can be shorter than the normal IP address rental period, and the rental period of general IP address is 8 days, then may be used Think that the rental period of the first terminal distribution IP address is 1 hour；If first core network entity does not receive described One terminal it is new re-rent request message, then when the IP address rental period is expired, recoverable first core network entity is described the The IP address of one terminal distribution.

Figure 13 is please referred to, is the composition schematic diagram of the first embodiment of terminal of the present invention.In the present embodiment, the terminal Including：

Transmit-Receive Unit 100 is used to initiate first message to the second terminal in the network coverage and the second terminal is built Vertical connection；And by the second terminal to the first core network entity send second message with apply obtain IP address, it is described The mark of the terminal is carried in second message, so that first core network entity is according at least to described in mark identification Terminal is the terminal distribution IP address；

Communication unit 200, for after the Transmit-Receive Unit obtains IP address, being carried out by the second terminal and network Communication.

Preferably, the Transmit-Receive Unit 100 is additionally operable to execute by the second terminal and first core network entity With the verification process of server, in verification process, the Transmit-Receive Unit 100 by the second terminal send third message to First core network entity carries the mark of the terminal in the third message, so that first core net is real Body preserves the correspondence of the international mobile subscriber identity IMSI of the mark and the terminal；Or

The Transmit-Receive Unit 100 is additionally operable to through the second terminal and first core network entity executes and server Verification process, in verification process, the Transmit-Receive Unit 100 receives the 4th message, carries the end in the 4th message The mark at end, and the 4th message is sent out by the server by first core network entity and the second terminal It is sent to the Transmit-Receive Unit, so that first core network entity preserves the corresponding of the IMSI of the mark and the terminal and closes System；Or

The Transmit-Receive Unit 100 is additionally operable to through the second terminal and first core network entity executes and server Verification process, in verification process, the Transmit-Receive Unit 100 receive by first core network entity passes through it is described second eventually The 5th message sent is held, the mark of the terminal is carried in the 5th message, and first core network entity is protected There is the correspondence of the IMSI of the mark and the terminal；Or

The Transmit-Receive Unit 100 is additionally operable to execute by the second terminal and the second core network entity to be recognized with server Card process, in verification process, the Transmit-Receive Unit 100 sends the 6th message to second core by the second terminal Network entity carries the mark of the terminal in the 6th message, so that second core network entity is described first Core network entity creates the correspondence of the IMSI of the mark and the terminal, or so that second core network entity to institute The IMSI that the first core network entity sends the mark and the terminal is stated, so that first core network entity preserves described the The correspondence of the IMSI of one mark and the terminal；Or

The Transmit-Receive Unit 100 is additionally operable to execute by the second terminal and the second core network entity to be recognized with server Card process, in verification process, the Transmit-Receive Unit 100 carries described for receiving the 7th message, in the 7th message The mark of one terminal, and the 7th message passes through second core network entity and second end by the server End be sent to the Transmit-Receive Unit so that second core network entity first core network entity create it is described mark and The correspondence of the IMSI of the terminal, or so that second core network entity to first core network entity send described in The IMSI of mark and the terminal, so that first core network entity preserves the correspondence of the IMSI of the mark and the terminal Relationship；Or

The Transmit-Receive Unit 100 is additionally operable to execute by the second terminal and the second core network entity to be recognized with server Card process, in verification process, the Transmit-Receive Unit 100 includes described first for receiving the 8th message, the 8th message The mark of terminal, and the 8th message is sent to the receipts by second core network entity by the second terminal Bill member, so that second core network entity creates the IMSI of the mark and the terminal in first core network entity Correspondence, or so that second core network entity to first core network entity send it is described mark and the terminal IMSI, so as to first core network entity preserve it is described mark and the terminal IMSI correspondence.

If first core network entity preserves the correspondence of the IMSI of the mark and the first terminal, institute State pair of the IP address of the reception of Transmit-Receive Unit 100 by first core network entity according to the mark and the IMSI of the terminal It should be related to, be the terminal distribution after identifying the terminal.

If carry the mark of the terminal in the 4th message or the 7th message, the mark is by the service Device is the terminal distribution.

If carry the mark of the terminal in the 5th message or the 8th message, the mark is by first core Network entity is the terminal distribution.

If carry the mark of the terminal in the 5th message or the 8th message, the layer for being identified as the terminal The temporary identifications of two identity or digital form.

It is described to be identified as connecing for the terminal if carry the mark of the terminal in the third message or the 6th message Nearly service terminal mark, two identity of layer or International Mobile Equipment Identity code IMEI.

What is carried in the second message is identified as IMSI, IMEI or mobile station identity number of the first terminal MSISDN。

The Transmit-Receive Unit 100 is additionally operable to receive the IP address rental period configuration message that first core network entity is sent, The rental period for the preset duration that first core network entity is terminal configuration is carried in the IP address rental period configuration message Information is returned so that first core network entity is when the preset duration reaches and does not receive the renewed treaty request of the terminal Receive allocated IP address.

It should be noted that Transmit-Receive Unit and/or communication unit can in the form of hardware solely in the above terminal embodiment The processor for standing on terminal is separately provided, and the form that form can be microprocessor is arranged；It can also embed in the form of hardware It in the processor of terminal, can also be stored in the memory of terminal, be called in order to the processor of terminal in a software form Execute the above Transmit-Receive Unit and/or the corresponding operation of communication unit.

Figure 14 is please referred to, is the composition schematic diagram of the second embodiment of terminal of the present invention.In the present embodiment, the terminal Including：Processor 110 and with 110 matched memory 120 of the processor.Wherein memory 120 is for storing one group of journey Sequence code, processor 110 for calling the program code stored in memory 120, execute the first of communication means of the present invention to Operation described in 5th any embodiment.

Figure 15 is please referred to, is the composition schematic diagram of the 3rd embodiment of terminal of the present invention.In the present embodiment, the terminal Including：

Transmit-Receive Unit 300, the first message that the first terminal for receiving not for the network coverage is sent out are established and described The connection of first terminal；And the second message that the first terminal is sent is received, include described first in the second message The IMSI and mark of terminal；

Storage unit 400, the correspondence for preserving the IMSI and mark；

The first IP address that the Transmit-Receive Unit 300 is additionally operable to receive the first terminal obtains request message, and described the It includes the mark that one IP address, which obtains in request message, according to the correspondence of the IMSI and mark, to core network entity It sends the second IP address and obtains request message, second IP address obtains in request message and carries the IMSI, so that institute IMSI of the core network entity according to the first terminal is stated, IP address is distributed for the first terminal；And receive the core The IP address that network entity returns, the first terminal is sent to by the IP address.

Two identity of layer for being identified as the first terminal.

Figure 16 is please referred to, is the composition schematic diagram of the fourth embodiment of terminal of the present invention.In the present embodiment, the terminal Including：

First Transmit-Receive Unit 500, for initiating first message to mobile management entity, request is established and core network entity Connection；Receive the second message that the mobile management entity returns, wherein the core network entity is carried in the second message Address information；

Second Transmit-Receive Unit 600, for receiving the certification request for being not in the first terminal of the network coverage and sending；According to institute The address information for stating core network entity sends the certification request of the first terminal to the core network entity, so as to described first Terminal completes verification process by the core network entity, with server.

The first message is PDN connection request messages, and the second message is PDN connection received messages；Or

Alternatively, carrying the address letter of the core network entity in protocol configuration option PCO parameters in the second message Breath, and the address information of the core network entity is configured by the core network entity in the PCO parameters.

Figure 17 is please referred to, is the composition schematic diagram of the first embodiment of core network entity of the present invention.In the present embodiment, institute Stating core network entity includes：

Transmit-Receive Unit 700, for being sent out to the second terminal in the network coverage in the first terminal for being not in the network coverage It plays first message and the second terminal is established after connection, receive what the first terminal was sent by the second terminal Second message for applying for obtaining IP address, the mark of the first terminal is carried in the second message；

Allocation unit 800 distributes IP for identifying the first terminal according at least to the mark for the first terminal Address is communicated by the second terminal with network so that after the first terminal obtains IP address.

The Transmit-Receive Unit 700 is additionally operable to：

After the correspondence for preserving the IMSI of the first identifier and the first terminal in the Transmit-Receive Unit 700, The allocation unit 800 is additionally operable to the correspondence according to the mark and the IMSI of the first terminal, identification described first Terminal distributes IP address for the first terminal.

Figure 18 is please referred to, is the composition schematic diagram of the second embodiment of core network entity of the present invention.In the present embodiment, institute Stating core network entity includes：

Recovery unit 900 is used for through second terminal transmission IP address rental period configuration message to the first terminal, The preset duration that first core network entity is first terminal configuration is carried in the IP address rental period configuration message Rental period information；If the preset duration reaches and does not receive the renewed treaty request of the first terminal, with recycling allocated IP Location.

The Transmit-Receive Unit 700 is additionally operable to：

It should be noted that Transmit-Receive Unit, storage unit and recovery unit can be in the above core network entity embodiment The form of hardware is separately provided independently of the processor of core network entity, and the form that form can be microprocessor is arranged； It can be embedded in the processor of core network entity in the form of hardware, depositing for core network entity can also be stored in a software form In reservoir, in order to which the processor of core network entity calls the above Transmit-Receive Unit of execution, storage unit or recovery unit corresponding Operation.

Figure 19 is please referred to, is the composition schematic diagram of the 3rd embodiment of core network entity of the present invention.In the present embodiment, institute Stating core network entity includes：Processor 130 and with 130 matched memory 140 of the processor.Wherein memory 140 is used In storage batch processing code, processor 130 executes present invention communication for calling the program code stored in memory 140 Operation described in 11st to the 12nd any embodiment of method.

It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment weight What point illustrated is all the difference with other embodiments, and the same or similar parts between the embodiments can be referred to each other. For device embodiments, since it is basically similar to the method embodiment, thus description it is fairly simple, related place referring to The part of embodiment of the method illustrates.

By the description of above-described embodiment, the present invention has the following advantages：

One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium In, the program is when being executed, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic Dish, CD, read-only memory（Read-Only Memory, abbreviation ROM）Or random access memory（Random Access Memory, abbreviation RAM）Deng.

The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.

Claims

1. a kind of communication means, which is characterized in that including：

The first terminal for being not in the network coverage initiates first message and described second eventually to the second terminal in the network coverage Connection is established at end；

The first terminal by the second terminal to the first core network entity send second message with apply obtain IP address, The mark of the first terminal is carried in the second message, so that first core network entity is according at least to the mark It identifies the first terminal, IP address is distributed for the first terminal；

After the first terminal obtains IP address, communicated with network by the second terminal；

The first terminal by the connection established with the second terminal to the first core network entity send second message with Before application obtains IP address, further include：

The first terminal executes the verification process with server by the second terminal and first core network entity, In verification process, the first terminal by the second terminal send third message to first core network entity, it is described The mark of the first terminal is carried in third message so that first core network entity preserve it is described mark and it is described The correspondence of the international mobile subscriber identity IMSI of first terminal；Or

The first terminal executes the verification process with server by the second terminal and first core network entity, In verification process, the first terminal receives the 4th message, and the mark of the first terminal is carried in the 4th message, And the 4th message is sent to described first by the server by first core network entity and the second terminal Terminal, so that first core network entity preserves the correspondence of the IMSI of the mark and the first terminal；Or

The first terminal executes the verification process with server by the second terminal and first core network entity, In verification process, the first terminal, which is received, the 5th to be disappeared by first core network entity by the way that the second terminal is sent It ceases, the mark of the first terminal is carried in the 5th message, and first core network entity preserves the mark Know the correspondence with the IMSI of the first terminal；Or

The first terminal executes the verification process with server by the second terminal and the second core network entity, in certification In the process, the first terminal sends the 6th message to second core network entity by the second terminal, and the described 6th The mark of the first terminal is carried in message, so that second core network entity is created in first core network entity Build the correspondence of the IMSI of the mark and the first terminal, or so that second core network entity to first core Heart network entity send it is described mark and the first terminal IMSI, so as to first core network entity preserve it is described mark and The correspondence of the IMSI of the first terminal；Or

The first terminal executes the verification process with server by the second terminal and the second core network entity, in certification In the process, the first terminal receives the 7th message, and the mark of the first terminal, and institute are carried in the 7th message It states the 7th message and the first terminal is sent to by second core network entity and the second terminal by the server, So that second core network entity creates the IMSI's of the mark and the first terminal in first core network entity Correspondence, or so that second core network entity sends the mark and described first eventually to first core network entity The IMSI at end, so that first core network entity preserves the correspondence of the IMSI of the mark and the first terminal；Or

The first terminal executes the verification process with server by the second terminal and the second core network entity, in certification In the process, the first terminal receives the 8th message, and the 8th message includes the mark of the first terminal, and described 8th message is sent to the first terminal by second core network entity by the second terminal, so that second core Heart network entity first core network entity create it is described mark and the first terminal IMSI correspondence, or so that Second core network entity sends the IMSI of the mark and the first terminal to first core network entity, with toilet It states the first core network entity and preserves the mark and the correspondence of the first terminal IMSI.

2. the method as described in claim 1, which is characterized in that if first core network entity preserves the mark and institute State the correspondence of the IMSI of first terminal, then the IP address that the first terminal receives by first core network entity according to The correspondence of the mark and the IMSI of the first terminal after identifying the first terminal, distributes for the first terminal.

3. the method as described in claim 1, which is characterized in that if carrying described first in the 4th message or the 7th message When the mark of terminal, the mark is distributed by the server for the first terminal.

4. the method as described in claim 1, which is characterized in that if carrying described first in the 5th message or the 8th message When the mark of terminal, the mark is distributed by first core network entity for the first terminal.

5. the method as described in claim 1, which is characterized in that if carrying described first in the 5th message or the 8th message When the mark of terminal, the temporary identifications of two identity of layer or digital form for being identified as the first terminal.

6. the method as described in claim 1, which is characterized in that if carrying described first in the third message or the 6th message It is described to be identified as the mobile close to service terminal mark, two identity of layer or the world of the first terminal when mark of terminal Device identity IMEI.

7. the method as described in claim 1, which is characterized in that if carrying described first in the 4th message or the 7th message It is described to be identified as assumed name Pseudonym when the mark of terminal.

8. such as claim 1-7 any one of them methods, which is characterized in that being identified as being carried in the second message is described IMSI, IMEI or mobile station identity number MSISDN of first terminal.

9. method as claimed in claim 8, which is characterized in that the second message finds for dynamic host configuration protocol DHCP Message or DHCP request message.

10. method as claimed in claim 9, which is characterized in that further include：

The IP address rental period configuration message that first core network entity is sent is received, is taken in the IP address rental period configuration message Rental period information with the preset duration that first core network entity is first terminal configuration, so as to first core net Entity recycles allocated IP address when the preset duration reaches and does not receive the renewed treaty request of the first terminal.

11. a kind of communication means, which is characterized in that including：

Second terminal reception in the network coverage is not in the first message that the first terminal of the network coverage is sent out, foundation and institute State the connection of first terminal；

The second terminal receives the second message that the first terminal is sent, and includes the first terminal in the second message IMSI and mark, the second terminal preserve the IMSI and the correspondence of mark；

The first IP address that the second terminal receives the first terminal obtains request message, and the first IP address acquisition is asked It includes the mark to ask in message, and the second terminal is sent out according to the correspondence of the IMSI and mark to core network entity The second IP address is sent to obtain request message, second IP address obtains in request message and carries the IMSI, so that described Core network entity distributes IP address according to the IMSI of the first terminal for the first terminal；

The second terminal receives the IP address that the core network entity returns, and the IP address is sent to described first eventually End.

12. method as claimed in claim 11, which is characterized in that the two identity mark of layer for being identified as the first terminal Know.

13. a kind of communication means, which is characterized in that including：

The second terminal receives the second message that the mobile management entity returns, wherein institute is carried in the second message State the address information of core network entity；

The second terminal, which receives, is not in the certification request that the first terminal of the network coverage is sent, and the certification request includes institute State the mark of first terminal and the IMSI of the first terminal；

The second terminal sends the first terminal according to the address information of the core network entity to the core network entity The certification request complete verification process, the core with server so that the first terminal is by the core network entity Heart network entity preserves the correspondence of the mark of the first terminal and the IMSI of the first terminal.

14. method as claimed in claim 13, which is characterized in that the first message is PDN connection request messages, described the Two message are PDN connection received messages；Or

15. method as claimed in claim 13, which is characterized in that the protocol configuration option PCO parameters in the second message The middle address information for carrying the core network entity, and the address information of the core network entity is configured by the core network entity In the PCO parameters.

16. a kind of communication means, which is characterized in that including：

In the first terminal for being not in the network coverage first message and described second is initiated to the second terminal in the network coverage Terminal is established after connection, and the first core network entity receives the first terminal and is used to apply by what the second terminal was sent The second message of IP address is obtained, the mark of the first terminal is carried in the second message；

The first terminal is identified according at least to the mark, IP address is distributed for the first terminal, so that described first is whole After end obtains IP address, communicated with network by the second terminal；

The first terminal, which is received, in the first core network entity obtains IP address for application by what the second terminal was sent Second message before, further include：

Pass through the second terminal and the verification process of first core network entity execution and server in the first terminal In, the third message that the first terminal is sent by the second terminal is received, described first is carried in the third message The mark of terminal preserves the correspondence of the international mobile subscriber identity IMSI of the mark and the first terminal； Or

Pass through the second terminal and the verification process of first core network entity execution and server in the first terminal In, the 4th message that the server is sent is received, it is whole to described first to send the 4th message by the second terminal It holds, the mark of the first terminal is carried in the 4th message, preserve the IMSI of the mark and the first terminal Correspondence；Or

Pass through the second terminal and the verification process of first core network entity execution and server in the first terminal In, by the second terminal the 5th message of transmission to the first terminal, the first terminal is carried in the 5th message The mark, preserve it is described mark and the first terminal IMSI correspondence；Or

In the first terminal executes the verification process with server by the second terminal and the second core network entity, if The first terminal sends the 6th message to second core network entity by the second terminal, is taken in the 6th message The mark with the first terminal, first core network entity receive the mark that second core network entity creates Know and the correspondence of the IMSI of the first terminal, or receives the mark that second core network entity is sent and described The IMSI of first terminal preserves the correspondence of the IMSI of the mark and the first terminal；Or

In the first terminal executes the verification process with server by the second terminal and the second core network entity, if The first terminal receives the server and disappears by the 7th of second core network entity and second terminal transmission It ceases, the mark of the first terminal is carried in the 7th message, first core network entity receives second core The correspondence of the IMSI of the mark and the first terminal that heart network entity creates, or receive second core network entity The IMSI of the mark and the first terminal that send preserves the corresponding of the IMSI of the mark and the first terminal and closes System；Or

In the first terminal executes the verification process with server by the second terminal and the second core network entity, if The first terminal receives the 8th message that second core network entity is sent by the second terminal, and the described 8th disappears The mark of the first terminal is carried in breath, first core network entity receives what second core network entity created The correspondence of the IMSI of the mark and the first terminal, or receive the mark that second core network entity is sent With the IMSI of the first terminal, the correspondence of the IMSI of the mark and the first terminal is preserved.

17. the method described in claim 16, which is characterized in that preserve the mark and institute in first core network entity After the correspondence for stating the IMSI of first terminal, first core network entity is according to the mark and the first terminal The correspondence of IMSI identifies the first terminal, and IP address is distributed for the first terminal.

18. the method described in claim 16, which is characterized in that if carrying described in the 4th message or the 7th message When the mark of one terminal, the mark is distributed by the server for the first terminal.

19. the method described in claim 16, which is characterized in that if carrying described in the 5th message or the 8th message When the mark of one terminal, the mark is distributed by first core network entity for the first terminal.

20. the method described in claim 16, which is characterized in that if carrying described in the 5th message or the 8th message When the mark of one terminal, the temporary identifications of two identity of layer or digital form for being identified as the first terminal.

21. the method described in claim 16, which is characterized in that if carrying described in the third message or the 6th message It is described to be identified as being moved close to service terminal mark, two identity of layer or the world for the first terminal when mark of one terminal Dynamic device identity IMEI.

22. the method described in claim 16, which is characterized in that if carrying described in the 4th message or the 7th message It is described to be identified as assumed name Pseudonym when the mark of one terminal.

23. such as claim 16-22 any one of them methods, which is characterized in that is carried in the second message is identified as IMSI, IMEI or mobile station identity number MSISDN of the first terminal.

24. method as claimed in claim 23, which is characterized in that the second message is sent out for dynamic host configuration protocol DHCP Existing message or DHCP request message.

25. method as claimed in claim 24, which is characterized in that further include：

First core network entity sends IP address rental period configuration message to the first terminal, institute by the second terminal State the rent that the preset duration that first core network entity is first terminal configuration is carried in IP address rental period configuration message Phase information；

If the preset duration reaches and do not receive the renewed treaty request of the first terminal, allocated IP address is recycled.

26. a kind of terminal, which is characterized in that including：

Transmit-Receive Unit, for initiating first message and second terminal foundation connection to the second terminal in the network coverage； And second message is sent to apply obtaining IP address, the second message to the first core network entity by the second terminal The middle mark for carrying the terminal, so that first core network entity is according at least to the mark identification terminal The terminal distribution IP address；

Communication unit, for after the Transmit-Receive Unit obtains IP address, being communicated with network by the second terminal；

The Transmit-Receive Unit is additionally operable to execute the certification with server by the second terminal and first core network entity Process, in verification process, the Transmit-Receive Unit sends third message to first core net reality by the second terminal Body carries the mark of the terminal in the third message so that first core network entity preserve the mark and The correspondence of the international mobile subscriber identity IMSI of the terminal；Or

The Transmit-Receive Unit is additionally operable to execute the certification with server by the second terminal and first core network entity Process, in verification process, the Transmit-Receive Unit receives the 4th message, and the mark of the terminal is carried in the 4th message Know, and the 4th message is sent to the receipts by the server by first core network entity and the second terminal Bill member, so that first core network entity preserves the correspondence of the IMSI of the mark and the terminal；Or

The Transmit-Receive Unit is additionally operable to execute the certification with server by the second terminal and first core network entity Process, in verification process, what the Transmit-Receive Unit reception was sent by first core network entity by the second terminal 5th message, carries the mark of the terminal in the 5th message, and first core network entity preserve it is described The correspondence of the IMSI of mark and the terminal；Or

The Transmit-Receive Unit is additionally operable to the verification process by the second terminal and the second core network entity execution and server, In verification process, the Transmit-Receive Unit sends the 6th message to second core network entity, institute by the second terminal The mark that the terminal is carried in the 6th message is stated, so that second core network entity is in first core network entity Create the correspondence of the IMSI of the mark and the terminal, or so that second core network entity to first core Network entity sends the IMSI of the mark and the terminal, so that first core network entity preserves the mark and the end The correspondence of the IMSI at end；Or

The Transmit-Receive Unit is additionally operable to the verification process by the second terminal and the second core network entity execution and server, In verification process, the Transmit-Receive Unit carries the mark of the terminal for receiving the 7th message in the 7th message Know, and the 7th message is sent to the receipts by the server by second core network entity and the second terminal Bill member, so that second core network entity creates the IMSI of the mark and the terminal in first core network entity Correspondence, or so that second core network entity to first core network entity send it is described mark and the terminal IMSI, so as to first core network entity preserve it is described mark and the terminal IMSI correspondence；Or

The Transmit-Receive Unit is additionally operable to the verification process by the second terminal and the second core network entity execution and server, In verification process, the Transmit-Receive Unit includes the mark of the terminal for receiving the 8th message, the 8th message, And the 8th message is sent to the Transmit-Receive Unit by second core network entity by the second terminal, so that described Second core network entity first core network entity create it is described mark and the terminal IMSI correspondence, or with Second core network entity is set to send the IMSI of the mark and the terminal to first core network entity, so as to described First core network entity preserves the mark and the correspondence of the terminal IMSI.

27. terminal as claimed in claim 26, which is characterized in that if first core network entity preserve it is described mark and The correspondence of the IMSI of the terminal, then the IP address that the Transmit-Receive Unit receives is by first core network entity according to institute The correspondence for stating mark and the IMSI of the terminal is the terminal distribution after identifying the terminal.

28. terminal as claimed in claim 26, which is characterized in that if carrying the end in the 4th message or the 7th message When the mark at end, the mark is the terminal distribution by the server.

29. terminal as claimed in claim 26, which is characterized in that if carrying the end in the 5th message or the 8th message When the mark at end, the mark is the terminal distribution by first core network entity.

30. terminal as claimed in claim 26, which is characterized in that if carrying the end in the 5th message or the 8th message When the mark at end, the temporary identifications of two identity of layer or digital form for being identified as the terminal.

31. terminal as claimed in claim 26, which is characterized in that if carrying the end in the third message or the 6th message When the mark at end, it is described be identified as the terminal close to service terminal mark, two identity of layer or international mobile device body Part code IMEI.

32. terminal as claimed in claim 26, which is characterized in that if carrying the end in the 4th message or the 7th message It is described to be identified as assumed name Pseudonym when the mark at end.

33. such as claim 26-32 any one of them terminals, which is characterized in that the second message is dynamic host configuration Protocol DHCP finds message or DHCP request message.

34. terminal as claimed in claim 33, which is characterized in that is carried in the second message is identified as the terminal IMSI, IMEI or mobile station identity number MSISDN.

35. terminal as claimed in claim 34, which is characterized in that the Transmit-Receive Unit is additionally operable to receive first core net The IP address rental period that entity is sent configures message, and carrying first core network entity in the IP address rental period configuration message is The rental period information of the preset duration of terminal configuration, so that first core network entity reaches and not in the preset duration When receiving the renewed treaty request of the terminal, allocated IP address is recycled.

36. a kind of terminal, which is characterized in that including：

Transmit-Receive Unit is established with described first eventually for receiving the first message for being not in the first terminal of the network coverage and sending out The connection at end；And the second message that the first terminal is sent is received, comprising the first terminal in the second message IMSI and mark；

Storage unit, the correspondence for preserving the IMSI and mark；

The first IP address that the Transmit-Receive Unit is additionally operable to receive the first terminal obtains request message, first IP address It includes the mark to obtain in request message, and according to the correspondence of the IMSI and mark, second is sent to core network entity IP address obtains request message, and second IP address obtains in request message and carries the IMSI, so that the core net Entity distributes IP address according to the IMSI of the first terminal for the first terminal；And it receives the core network entity and returns The IP address returned, the first terminal is sent to by the IP address.

37. terminal as claimed in claim 36, which is characterized in that the two identity mark of layer for being identified as the first terminal Know.

38. a kind of terminal, which is characterized in that including：

First Transmit-Receive Unit, for initiating first message to mobile management entity, the connection with core network entity is established in request；It connects Receive the second message that the mobile management entity returns, wherein the address of the core network entity is carried in the second message Information；

Second Transmit-Receive Unit, for receiving the certification request for being not in the first terminal of the network coverage and sending, the certification request Including the mark of the first terminal and the IMSI of the first terminal；According to the address information of the core network entity to described Core network entity sends the certification request of the first terminal, so that the first terminal is by the core network entity, Verification process is completed with server, the core network entity preserves the mark of the first terminal and the first terminal The correspondence of IMSI.

39. terminal as claimed in claim 38, which is characterized in that the first message is PDN connection request messages, described the Two message are PDN connection received messages；Or

40. terminal as claimed in claim 38, which is characterized in that the protocol configuration option PCO parameters in the second message The middle address information for carrying the core network entity, and the address information of the core network entity is configured by the core network entity In the PCO parameters.

41. a kind of core network entity, which is characterized in that including：

Transmit-Receive Unit disappears for initiating first to the second terminal in the network coverage in the first terminal for being not in the network coverage Breath and the second terminal are established after connection, are received the first terminal and are used to apply by what the second terminal was sent The second message of IP address is obtained, the mark of the first terminal is carried in the second message；

Allocation unit distributes IP address for identifying the first terminal according at least to the mark for the first terminal, with After so that the first terminal is obtained IP address, communicated with network by the second terminal；

The Transmit-Receive Unit is additionally operable to：

In the first terminal executes the verification process with server by the second terminal and the core network entity, connect The third message that the first terminal is sent by the second terminal is received, the first terminal is carried in the third message The mark preserves the correspondence of the international mobile subscriber identity IMSI of the mark and the first terminal；Or

In the first terminal executes the verification process with server by the second terminal and the core network entity, connect The 4th message that the server is sent is received, the 4th message is sent to the first terminal, institute by the second terminal The mark for carrying the first terminal in the 4th message is stated, the correspondence of the IMSI of the mark and the first terminal is preserved Relationship；Or

In the first terminal executes the verification process with server by the second terminal and the core network entity, lead to It crosses the second terminal and sends the 5th message to the first terminal, the described of the first terminal is carried in the 5th message Mark preserves the correspondence of the IMSI of the mark and the first terminal；Or

In the first terminal executes the verification process with server by the second terminal and the second core network entity, if The first terminal sends the 6th message to second core network entity by the second terminal, is taken in the 6th message The mark with the first terminal, the core network entity receive the mark that second core network entity creates and The correspondence of the IMSI of the first terminal, or receive the mark and described first that second core network entity is sent The IMSI of terminal preserves the correspondence of the IMSI of the mark and the first terminal；Or

In the first terminal executes the verification process with server by the second terminal and the second core network entity, if The first terminal receives the server and disappears by the 7th of second core network entity and second terminal transmission It ceases, the mark of the first terminal is carried in the 7th message, the core network entity receives second core net The correspondence of the mark of entity set-up and the IMSI of the first terminal, or receive second core network entity and send The mark and the first terminal IMSI, preserve it is described mark and the first terminal IMSI correspondence；Or

In the first terminal executes the verification process with server by the second terminal and the second core network entity, if The first terminal receives the 8th message that second core network entity is sent by the second terminal, and the described 8th disappears The mark of the first terminal is carried in breath, the core network entity receives the described of the second core network entity establishment The correspondence of the IMSI of mark and the first terminal, or receive the mark and institute that second core network entity is sent The IMSI of first terminal is stated, the correspondence of the IMSI of the mark and the first terminal is preserved.

42. core network entity as claimed in claim 41, which is characterized in that preserve the mark and institute in the Transmit-Receive Unit After the correspondence for stating the IMSI of first terminal, the allocation unit is additionally operable to according to the mark and the first terminal The correspondence of IMSI identifies the first terminal, and IP address is distributed for the first terminal.

43. core network entity as claimed in claim 42, which is characterized in that further include：

Recovery unit, for sending IP address rental period configuration message to the first terminal, the IP by the second terminal The rental period information for the preset duration that the core network entity is first terminal configuration is carried in address lease configuration message；If The preset duration reaches and does not receive the renewed treaty request of the first terminal, then recycles allocated IP address.