CN103686846B

CN103686846B - Data message transmission method, PDN connection identifier processing method and device

Info

Publication number: CN103686846B
Application number: CN201210330317.2A
Authority: CN
Inventors: 刘国燕; 朱春晖; 涂杨巍; 周星月
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2012-09-07
Filing date: 2012-09-07
Publication date: 2019-04-05
Anticipated expiration: 2032-09-07
Also published as: CN103686846A; WO2013166817A1

Abstract

The invention discloses data message transmission method, PDN connection identifier processing method and devices.One of method includes: UE to non-3 GPP access network trusty the first IP address request message of transmission, receives the first IP address that non-3 GPP access network trusty is UE distribution；UE sends the second IP address request message to non-3 GPP access network trusty, receives the second IP address that 3GPP core net is UE distribution；UE is transmitted through the data message of tunnel encapsulation, wherein perhaps purpose IP address is the source IP address in the second IP address tunnel to the source IP address of data message or purpose IP address is the first IP address.Through the invention, the reliability that UE carries out message transmissions by non-3 GPP access network is improved.

Description

Data message transmission method, PDN connection identifier processing method and device

Technical field

The present invention relates to the communications fields, in particular to a kind of data message transmission method, packet data network (Packet Data Network, referred to as PDN) connection identifier processing method and device.

Background technique

Third generation partner program (3rd Generation Partnership Project's, referred to as 3GPP) drills Into grouping system (Evolved Packet System, referred to as EPS) by the Universal Terrestrial Radio Access Network of evolution (Evolved Universal Terrestrial Radio Access Network, referred to as E-UTRAN), mobile management list Member (Mobility Management Entity, referred to as MME), gateway (Serving Gateway, referred to as S- GW), grouped data network gateway (Packet Data Network Gateway, referred to as PDN GW or P-GW) and ownership Client server (Home Subscriber Server, referred to as HSS) composition.

Fig. 1 is the 3GPP network of the relevant technologies and the network structure of non-3 GPP network intercommunication, as shown in Figure 1, EPS is supported With the intercommunication of non-3 GPP system, wherein the intercommunication with non-3 GPP system realizes that PDN GW is as 3GPP by S2a/b/c interface Anchor point between non-3 GPP system.In the system architecture diagram of EPS, non-3 GPP system access is divided into trustless non-3 gpp and connects Enter and trusted non-3 GPP access.Wherein, trustless non-3 GPP access need to packet data gateway (Evolved Jing Guo evolution Packet Data Gateway, referred to as ePDG) it is connected with PDN GW, the interface between ePDG and PDN GW is S2b；Trusted Non-3 GPP access can directly be connect by S2a interface with PDN GW, and S2a interface uses proxy mobile internet protocol (Proxy Mobile Internet P_roto_cOl, referred to as PMIP) agreement progress information exchange；It is set in addition, S2c interface provides user The relevant control in user face between standby (User Equipment, referred to as UE) and PDN GW and mobility support, support Mobility management protocol be mobile IP v 6 (the Double Supported Moblie IPv6Support for for supporting double stacks Dual Stack Hosts and Routers, referred to as DSMIPv6), it can be used for trustless non-3 gpp and trusted Non-3 GPP access.

Currently, many operators think, and Wireless LAN (Wireless Local Area Network, referred to as WLAN it) can be used as non-3 GPP system trusty, therefore, UE accesses the problem that interconnects of EPS by WLAN trusty It is gradually taken seriously and begins one's study, and the prior art has relevant framework and generates.A logical ne and 3GPP of WLAN P-GW by the intercommunication of S2a interface, S2a interface support universal tunnel agreement (Generic Tunneling Protocol, referred to as For GTP)/PMIP agreement.In order to be avoided as far as possible to the access controller (Access Control, referred to as AC) in existing net/wide Band network gateway (Broadband network Gateway, referred to as BNG) equipment is upgraded, and WLAN access net is introduced Close (for example, WLAN access gateway trusty (Trusted WLAN Access Gateway, referred to as TWAG '), to subtract The upgrading to existing net equipment is lacked, the schematic network structure after introducing TWAG ' is as shown in Figure 2.If being achieved, TWAG ' needs support the S2a interface function between P-GW.

After providing that UE is accessed by WLAN in 3GPP agreement, it is possible to different mobile service grouping nets can be accessed simultaneously Network can establish multiple packet data network (Packet Data Network, referred to as PDN) connection at this time.In the related technology, UE can distinguish different PDN connections by business five-tuple, however, identical UE different PDN connections may distribute phase Same IP address.Therefore, for the problem that this scene, how to distinguish different PDN connections and need further to be solved.

It is poor by non-3 GPP access network trusty progress data-message transmission Reliability comparotive for UE in the related technology The problem of, currently no effective solution has been proposed.

Summary of the invention

It is poor by non-3 GPP access network trusty progress data-message transmission Reliability comparotive for UE in the related technology The problem of, the present invention provides data message transmission method, PDN connection identifier processing method and devices, are asked at least solving this Topic.

According to an aspect of the invention, there is provided a kind of data message transmission method, comprising: UE is to trusty non- Three generations affiliate 3GPP access net sends the first IP address request message, and receiving the non-3 GPP access network trusty is institute State the first IP address of UE distribution；The UE sends the second IP address request message to the non-3 GPP access network trusty, Receive the second IP address that 3GPP core net is UE distribution；The UE is transmitted through the data message of tunnel encapsulation, wherein The source IP address of the data message perhaps purpose IP address be the second IP address tunnel source IP address or destination IP Address is the first IP address.

Preferably, UE sends the first IP address request message to non-3 GPP access network trusty, receives the trusted Non-3 GPP access network be the first IP address of UE distribution include: the UE to access controller/wideband network gateway AC/ BNG sends the first IP address request message, obtains the first IP address that the AC/BNG is UE distribution；Or the UE is to can The WLAN WLAN access gateway TWAG ' of trust sends the first IP address request message, and obtaining the TWAG ' is the UE First IP address of distribution.

Preferably, before the UE is transmitted through the data message of tunnel encapsulation, further includes: can described in the UE reception The non-3 GPP access network of trust is the information in the tunnel of UE distribution, wherein the tunnel information is the trusted Non-3 GPP access network receive the first IP address request message that the UE is sent after be what the UE was distributed.

Preferably, when the UE sends the first IP address request message to AC/BNG, AC/BNG is to nothing trusty Line LAN optimization gateway TWAG ' sends Radius request message, receives the information in the tunnel of the TWAG ' distribution.

Preferably, the information in the tunnel includes: the key in the tunnel and/or the local terminal IP address in the tunnel.

Preferably, the first IP address request message and the second IP address request message pass through Packet Data Network Network PDN connection identifier is associated or is associated by the information in the tunnel.

Preferably, the first IP address request message includes: DynamicHost setting agreement (DHCP) message；Described second IP address request message includes: the dhcp message.

Preferably, before the UE sends the first IP address request message to the non-3 GPP access network trusty Or when the UE sends the first IP address request message to the non-3 GPP access network trusty, the UE passes through At least one following message transmitting access point name (APN) information: 802.11 message of Institute of Electrical and Electric Engineers (IEEE), Agreement (DHCP) message, Extensible Authentication Protocol (EAP) message is arranged in DynamicHost.

According to another aspect of the invention, a kind of data message transmission method is provided, comprising: the non-third generation trusty Affiliate 3GPP access net receives the first Internet protocol IP address request message that user equipment (UE) is sent, and is the UE points With the first IP address；The non-3 GPP access network trusty receives the second IP address request message that the UE is sent, to 3GPP core net sends conversation request message, and receives the second IP address that the 3GPP core net is UE distribution；It is described Non-3 GPP access network trusty is transmitted through the data message of tunnel encapsulation, wherein the source IP address of the data message or Person's purpose IP address is the second IP address, and the source IP address or purpose IP address in the tunnel are the first IP address.

Preferably, it before the non-3 GPP access network trusty is transmitted through the data message of tunnel encapsulation, also wraps It includes: after the non-3 GPP access network trusty receives the first IP address request message that the UE is sent, for institute State the information that UE distributes the tunnel.

Preferably, the first IP address request message includes: DynamicHost setting Protocol DHCP messages；2nd IP Address request includes: the dhcp message.

According to another aspect of the invention, a kind of processing method of PDN connection identifier is provided, comprising: user equipment (UE) message for carrying access point name APN information is sent to by AC/BNG by AP/RG；The UE receives nothing trusty The corresponding first PDN connection identifier of the APN information of the AC/BNG distribution of line LAN optimization gateway TWAG ' forwarding； Or the UE receives the corresponding 2nd PDN connection identifier of the APN information of TWAG ' distribution, wherein the 2nd PDN connection Mark is that the TWAG ' is distributed after receiving the message for carrying the APN information that the AC/BNG is sent.

Preferably, it includes: institute that the message for carrying access point name APN information is sent to AC/BNG by AP/RG by UE It states UE and the GAS-ANQP initial request message for carrying the APN information is sent to the AP/RG, triggering the AP/RG will The CAPWAP WTP event request or Radius request message for carrying the APN information are sent to the AC/BNG.

Preferably, the APN information that the AC/BNG that the UE receives TWAG ' forwarding trusty is distributed is corresponding First PDN connection identifier includes: that the UE receives the GAS- corresponding to the GAS-ANQP initial request message that AP/RG is sent ANQP initial communication message；Wherein, the GAS-ANQP initial communication message is that the AP/RG receives the AC/BNG transmission Corresponding to the CAPWAP WTP event request CAPWAP WTP event response or correspond to the Radius request message Radius response message after, Xiang Suoshu AP/RG send, and the CAPWAP WTP event response and Radius response disappear Breath carries the first PDN connection identifier；The CAPWAP WTP event response and Radius response message are the AC/ After BNG receives the Radius authentication response message for carrying the first PDN connection identifier that the TWAG ' is sent, to What the AC/BNG was sent.

Preferably, it includes: described that the UE, which receives the corresponding 2nd PDN connection identifier of the APN information of TWAG ' distribution, UE receives the GAS-ANQP initial communication message corresponding to the GAS-ANQP initial request message that the AP/RG is sent；Its In, the GAS-ANQP initial communication message be the AP/RG receive that the AC/BNG sends correspond to the CAPWAP The CAPWAP WTP event response of WTP event request or corresponding to the Radius request message Radius response message it Afterwards, Xiang Suoshu AP/RG is sent, and the CAPWAP WTP event response and Radius response message carry described second PDN connection identifier；The CAPWAP WTP event response and Radius response message are that the AC/BNG receives the TWAG ' After the Radius authentication response message for carrying the 2nd PDN connection identifier sent, what Xiang Suoshu AC/BNG was sent.

Preferably, the first PDN connection identifier and the 2nd PDN connection identifier are one of the following: PDN connection triggering is built The default bearer of first vertical GTP session identifies or session identification, the Institute of Electrical and Electric Engineers of PMIP session IEEE 802.11u message identifier, the xid of dhcp message, client connection identifier client id, interface identifier interferce id。

In accordance with a further aspect of the present invention, a kind of processing method of PDN connection identifier is additionally provided, comprising: access control Device/wideband network gateway (AC/BNG) receives user equipment (UE) and carries access point name (APN) letter by what AP/RG was forwarded The message of breath；The AC/BNG is that the APN information distributes corresponding first PDN connection identifier；Or the AC/BNG will be carried There is the message of the APN information to be sent to WLAN access gateway TWAG ' trusty, receives the TWAG ' distribution The 2nd PDN connection identifier corresponding to the APN information；The AC/BNG is by the first PDN connection identifier or described second PDN connection identifier is sent to the UE.

Preferably, it includes: institute that AC/BNG, which receives user equipment (UE) by the message for carrying APN information that AP/RG is forwarded, It states AC/BNG and receives the CAPWAP WTP event request for carrying the APN information or Radius request that the AP/RG is sent Message, wherein the CAPWAP WTP event request or Radius request message, which are the AP/RG, to be sent receiving the UE The GAS-ANQP initial request message for carrying the APN information after, Xiang Suoshu AP/RG send.

Preferably, it includes: the AC/BNG that the message for carrying the APN information is sent to TWAG ' by the AC/BNG The Radius authentication request message for carrying the APN information is sent to the TWAG '；Described in the AC/BNG is received The 2nd PDN connection identifier corresponding to the APN information of TWAG ' distribution includes: that the AC/BNG receives the TWAG ' transmission The Radius authentication response message corresponding to the Radius authentication request message, wherein the Radius authentication response disappears The 2nd PDN connection identifier is carried in breath.

Preferably, the first PDN connection identifier or the 2nd PDN connection identifier are sent to the UE packet by the AC/BNG Include: the AC/BNG is by the CAPWAP WTP event response for corresponding to CAPWAP WTP event request or corresponds to the Radius The Radius response message of request message is sent to AP/RG, triggers the AP/RG and is initially asked by corresponding to the GAS-ANQP The GAS-ANQP initial communication message of message is asked to be sent to the first PDN connection identifier or the 2nd PDN connection identifier The UE, wherein the CAPWAP WTP event response carries the first PDN with the Radius response message and connects Mark or the 2nd PDN connection identifier.

According to another aspect of the present invention, a kind of data-message transmission device is provided, UE is applied to, comprising: the first hair Module is sent, is disappeared for sending the request of the first Internet protocol IP address to non-third generation affiliate 3GPP access net trusty Breath；First receiving module, for receiving the first IP address that the non-3 GPP access network trusty is UE distribution；Second Sending module, for sending the second IP address request message to the non-3 GPP access network trusty；Second receiving module is used It is the second IP address that the UE is distributed in receiving 3GPP core net；First transmission module, is used for transmission through tunnel encapsulation Data message, wherein the source IP address or purpose IP address of the data message are the second IP address, the source IP in the tunnel Address or purpose IP address are the first IP address.

Preferably, first sending module is used to send the first IP address request message to AC/BNG；Described first connects It receives module and is used to obtain the first IP address that the AC/BNG is UE distribution；Or first sending module is used for credible The WLAN access gateway TWAG ' appointed sends the first IP address request message；First receiving module is for obtaining Taking the TWAG ' is first IP address of UE distribution.

Preferably, above-mentioned apparatus further include: third receiving module is for receiving the non-3 GPP access network trusty The tunnel information of the UE distribution, wherein the tunnel information is that the non-3 GPP access network trusty receives the UE After the first IP address request message sent, for UE distribution.

According to another aspect of the present invention, a kind of data-message transmission device is provided, non-third trusty is applied to Net is accessed for affiliate 3GPP, comprising: the 4th receiving module, for receiving the first Internet Protocol of user equipment (UE) transmission IP address request message；First distribution module, for distributing the first IP address for the UE；5th receiving module, for receiving The second IP address request message that the UE is sent；Third sending module, for sending conversation request message to 3GPP core net； 6th receiving module, for obtaining the second IP address that the 3GPP core net is UE distribution；Second transmission module, is used for It is transmitted through the data message of tunnel encapsulation, wherein the source IP address or purpose IP address of the data message are the 2nd IP Address, the source IP address or purpose IP address in the tunnel are the first IP address.

Preferably, above-mentioned apparatus further include: the second distribution module, for receiving the first IP that the UE is sent After the request message of location, the information in the tunnel is distributed for the UE.

In accordance with a further aspect of the present invention, a kind of processing unit of PDN connection identifier is additionally provided, UE is applied to, comprising: 4th sending module, for the message for carrying access point name APN information to be sent to AC/BNG by AP/RG；

7th receiving module, for receiving the AC/BNG of WLAN access gateway TWAG ' forwarding trusty The corresponding first PDN connection identifier of the APN information of distribution；Or the 8th receiving module, for receiving the described of TWAG ' distribution The corresponding 2nd PDN connection identifier of APN information, wherein the 2nd PDN connection identifier be the TWAG ' receive it is described It is distributed after the message for carrying the APN information that AC/BNG is sent.

Preferably, the 4th sending module includes: the 5th sending module, for that will carry the APN information GAS-ANQP initial request message is sent to the AP/RG, triggers the CAPWAP that the AP/RG will carry the APN information WTP event request or Radius request message are sent to the AC/BNG.

Preferably, the 7th receiving module be used for receive AP/RG transmission correspond to the GAS-ANQP initial request The GAS-ANQP initial communication message of message；Wherein, the GAS-ANQP initial communication message is described in the AP/RG is received AC/BNG send correspond to the CAPWAP WTP event request CAPWAP WTP event response or correspond to described in After the Radius response message of Radius request message, what Xiang Suoshu AP/RG was sent, and the CAPWAP WTP event response The first PDN connection identifier is carried with Radius response message；The CAPWAP WTP event response and Radius are rung Answering message is the Radius certification for carrying the first PDN connection identifier that the AC/BNG receives that the TWAG ' is sent After response message, what Xiang Suoshu AC/BNG was sent.

Preferably, the 8th receiving module is used to receive the initial corresponding to the GAS-ANQP of the AP/RG transmission The GAS-ANQP initial communication message of request message；Wherein, the GAS-ANQP initial communication message is that the AP/RG is received The CAPWAP WTP event response for corresponding to the CAPWAP WTP event request that the AC/BNG is sent or described in corresponding to After the Radius response message of Radius request message, what Xiang Suoshu AP/RG was sent, and the CAPWAPWTP event response The 2nd PDN connection identifier is carried with Radius response message；The CAPWAP WTP event response and Radius are rung Answering message is the Radius certification for carrying the 2nd PDN connection identifier that the AC/BNG receives that the TWAG ' is sent After response message, what Xiang Suoshu AC/BNG was sent.

In accordance with a further aspect of the present invention, a kind of processing unit of PDN connection identifier is additionally provided, access control is applied to Device/wideband network gateway (AC/BNG), comprising: the 9th receiving module carries access by what AP/RG was forwarded for receiving UE The message of point title APN information；Third distribution module, for distributing corresponding first PDN connection identifier for the APN information； Or the 6th sending module, for the message for carrying the APN information to be sent to WLAN access gateway trusty TWAG ', the tenth receiving module, for receiving the 2nd PDN connection identifier corresponding to the APN information of the TWAG ' distribution； 7th sending module, for the first PDN connection identifier or the 2nd PDN connection identifier to be sent to the UE.

Preferably, the 9th receiving module is used to receive that the AP/RG to send carries the APN information CAPWAPWTP event request or Radius request message, wherein the CAPWAP WTP event request or Radius request message It is the AP/RG after receiving the GAS-ANQP initial request message for carrying the APN information that the UE is sent, to What the AP/RG was sent.

Preferably, the 6th sending module, the Radius authentication request message for that will carry the APN information are sent out Give the TWAG '；Tenth receiving module, for receiving second corresponding to the APN information of the TWAG ' distribution PDN connection identifier includes: the AC/BNG reception TWAG ' transmission corresponding to the Radius authentication request message Radius authentication response message, wherein carry the 2nd PDN connection identifier in the Radius authentication response message.

Preferably, the 7th sending module will be for that will correspond to the CAPWAP WTP event of CAPWAP WTP event request Response or the Radius response message corresponding to the Radius request message be sent to AP/RG, trigger the AP/RG by pair The GAS-ANQP initial communication message of GAS-ANQP initial request message described in Ying Yu is by the first PDN connection identifier or described 2nd PDN connection identifier is sent to the UE, wherein the CAPWAP WTP event response and the Radius response message are equal Carry the first PDN connection identifier or the 2nd PDN connection identifier.

Through the invention, it is connect using UE by sending the first IP address request message to non-3 GPP access network trusty The first IP address that non-3 GPP access network trusty is UE distribution is received, then UE to non-3 GPP access network trusty by sending out The second IP address request message is sent, the second IP address that 3GPP core net is UE distribution is obtained, it is logical to realize the different PDN of UE It crosses different IP address to distinguish, so that solving UE in the related technology passes through non-3 GPP access network trusty progress data message biography The problem of defeated Reliability comparotive difference, improves the reliability of data-message transmission, solves UE in the related technology and passes through non-3 gpp Access net carries out the problem of data-message transmission Reliability comparotive difference, and then has reached raising UE and transmitted by non-3 GPP access network The effect of the reliability of data message.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is the 3GPP network of the relevant technologies and the network structure of non-3 GPP network intercommunication；

Fig. 2 is the schematic diagram that the UE of the relevant technologies accesses the framework of EPC by WLAN trusty；

Fig. 3 is the first pass figure of data message transmission method according to an embodiment of the present invention；

Fig. 4 is the second flow chart of data message transmission method according to an embodiment of the present invention；

Fig. 5 is the first structure block diagram of data-message transmission device according to an embodiment of the present invention；

Fig. 6 is the preferred first structure block diagram of data-message transmission device according to an embodiment of the present invention；

Fig. 7 is the second structural block diagram of data-message transmission device according to an embodiment of the present invention；

Fig. 8 is preferred second structural block diagram of data-message transmission device according to an embodiment of the present invention；

Fig. 9 is the first pass figure of PDN connection identifier processing method according to an embodiment of the present invention；

Figure 10 is the second flow chart of connection identifier processing method according to an embodiment of the present invention；

Figure 11 is the first structure block diagram of connection identifier processing unit according to an embodiment of the present invention；

Figure 12 is the preferred first structure block diagram of connection identifier processing unit according to an embodiment of the present invention；

Figure 13 is the second structural block diagram of connection identifier processing unit according to an embodiment of the present invention；

Figure 14 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart one of the process of EPC；

Figure 15 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flowchart 2 of the process of EPC；

Figure 16 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart 3 of the process of EPC；

Figure 17 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart four of the process of EPC；

Figure 18 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart five of the process of EPC；

Figure 19 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart six of the process of EPC；

Figure 20 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart seven of the process of EPC；

Figure 21 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart eight of the process of EPC；

Figure 22 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart nine of the process of EPC；

Figure 23 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart ten of the process of EPC；

Figure 24 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart 11 of the process of EPC；

Figure 25 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart 12 of the process of EPC； And

Figure 26 is UE according to an embodiment of the present invention by WLAN trusty, accesses the flow chart 13 of the process of EPC.

Specific embodiment

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.

A kind of data message transmission method is present embodiments provided, Fig. 3 is that data message according to an embodiment of the present invention passes The first pass figure of transmission method, as shown in figure 3, this method comprises the following steps S302 to step S306.

Step S302:UE sends the first IP address request message to non-3 GPP access network trusty, receives the trusted Non-3 GPP access network be the UE distribution the first IP address.

Step S304:UE sends the second IP address request message to the non-3 GPP access network trusty, receives 3GPP core Heart net is the second IP address of UE distribution.

Step S306:UE is transmitted through the data message of tunnel encapsulation, wherein the source IP address or mesh of the data message IP address be the second IP address, the source IP address or purpose IP address in the tunnel are the first IP address.

Through the above steps, UE is received by sending the first IP address request message to non-3 GPP access network trusty Non-3 GPP access network trusty is the first IP address of UE distribution, and then UE to non-3 GPP access network trusty by sending Second IP address request message receives the second IP address that 3GPP core net is UE distribution, realizes the different PDN of UE and pass through Different IP address is distinguished, so that solving UE in the related technology passes through non-3 GPP access network trusty progress data-message transmission The problem of Reliability comparotive difference, improves the reliability of data-message transmission.

It, can be in the following way to non-3 GPP access trusty in order to realize that UE receives the flexibility of the first IP address Net sends the first IP address request message, receives the first IP address:

Mode one: UE sends the first IP address request message to AC/BNG, and obtaining the AC/BNG is UE distribution First IP address.

Mode two: UE sends the first IP address request message to WLAN WLAN access gateway TWAG ' trusty, Obtain the first IP address that the TWAG ' is UE distribution.

In order to realize the reliability of data message transmission, before step S306, UE receives non-3 GPP access trusty Net is the information in the tunnel of UE distribution, wherein the tunnel information is that the non-3 GPP access network trusty receives It is what the UE was distributed after the first IP address request message that the UE is sent.

Preferably, the information in tunnel includes: the key in the tunnel and/or the local terminal IP address in the tunnel.

Preferably, the first IP address request message and the second IP address request message pass through packet data network PDN connection identifier is associated or is associated by the information in the tunnel.

When implementing, a variety of message can be used as the first IP address request message, such as: agreement is arranged in DynamicHost (DHCP) message.

It, can be using a variety of message as the second IP address request message when implementing.Such as: dhcp message.

First IP address is sent to the non-3 GPP access network trusty and is asked as preferably embodiment, the UE It asks before message or when the UE sends the first IP address request message to the non-3 GPP access network trusty, the UE is logical Cross at least one following message transmitting access point name APN information: 802.11 message of Institute of Electrical and Electric Engineers (IEEE), Agreement (DHCP) message, Extensible Authentication Protocol EAP message is arranged in DynamicHost.

A kind of data message transmission method is present embodiments provided, Fig. 4 is that data message according to an embodiment of the present invention passes The second flow chart of transmission method, as shown in figure 4, this method comprises the following steps S402 to step S406.

Step S402: non-3 GPP access network trusty receives the first IP address request message that user equipment (UE) is sent, The first IP address is distributed for the UE.

Step S404: non-3 GPP access network trusty receives the second IP address request message that UE is sent, to 3GPP core Heart net sends conversation request message, and receives the second IP address that 3GPP core net is UE distribution.

Step S406: non-3 GPP access network trusty is transmitted through the data message of tunnel encapsulation, wherein the datagram Perhaps purpose IP address is the source IP address in the second IP address tunnel to the source IP address of text or purpose IP address is the first IP Address.

Through the above steps, it realizes the different PDN of UE to distinguish by different IP address, to solve in the related technology UE carries out the problem of data-message transmission Reliability comparotive difference by non-3 GPP access network trusty, improves data message biography Defeated reliability.

In order to realize the reliability of data message transmission, tunnel encapsulation is transmitted through in the non-3 GPP access network trusty Data message before, the non-3 GPP access network trusty receives first IP address request that the UE is sent and disappears After breath, the information in the tunnel is distributed for UE.

Preferably, the information in the tunnel includes: the key in tunnel and/or the local terminal IP address in tunnel.

Preferably, the first IP address and the second IP address can be associated by PDN connection identifier or pass through tunnel Information be associated.

It should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions It is executed in computer system, although also, logical order is shown in flow charts, and it in some cases, can be with not The sequence being same as herein executes shown or described step.

In another embodiment, a kind of data-message transmission software is additionally provided, the software is for executing above-mentioned reality Apply technical solution described in example and preferred embodiment.

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

The embodiment of the invention also provides a kind of data-message transmission device, which can be applied to UE, the datagram Literary transmitting device can be used to implement above-mentioned data message transmission method and preferred embodiment, carry out explanation, no It repeats, the module being related in the data-message transmission device is illustrated again below.As used below, term " mould The combination of the software and/or hardware of predetermined function may be implemented in block ".Although system and method described in following embodiment are preferable Ground is realized with software, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.

Fig. 5 is the first structure block diagram of data-message transmission device according to an embodiment of the present invention, as shown in figure 5, the dress Setting includes: the first sending module 52, the first receiving module 54, the second sending module 56, the second receiving module 58, the first transmission mould Block 59, is below described in detail above structure.

First sending module 52, for sending the first internet to non-third generation affiliate 3GPP access net trusty Protocol IP address request message；First receiving module 54 is connected to the first sending module 52, described trusty non-for receiving 3GPP accesses the first IP address that net is UE distribution；Second sending module 56 is used for the non-3 GPP access trusty Net sends the second IP address request message；Second receiving module 58 is connected to the second sending module 56, for receiving 3GPP core Net is the second IP address of UE distribution；First transmission module 59 is connected to the first receiving module 54 and the second receiving module 58, It is used for transmission the data message by tunnel encapsulation, wherein the source IP address or purpose IP address of the data message are second IP address, the source IP address or purpose IP address in the tunnel are the first IP address.

Preferably, the first sending module 52 is used to send the first IP address request message to AC/BNG；The first reception mould Block 54 is used to obtain the first IP address that the AC/BNG is UE distribution.

Preferably, the first sending module 52 is used to send first IP address to WLAN access gateway TWAG ' trusty Request message；First receiving module 54 is used to obtain first IP address that TWAG ' is UE distribution.

Fig. 6 is the preferred first structure block diagram of data-message transmission device according to an embodiment of the present invention, such as Fig. 6 institute Show, the device further include: third receiving module 62 is connected to the first transmission module 59, connects for receiving non-3 gpp trusty It networks as the tunnel information of UE distribution, wherein the tunnel information is that the non-3 GPP access network trusty receives institute After the first IP address request message for stating UE transmission, for UE distribution.

The embodiment of the invention also provides a kind of data-message transmission device, which can be applied to trusty non- 3GPP accesses net, which can be used to implement above-mentioned data message transmission method and preferred embodiment, Explanation had been carried out, had been repeated no more, the module being related in the data-message transmission device had been illustrated below.Such as with Used in lower, the combination of the software and/or hardware of predetermined function is may be implemented in term " module ".Although following embodiment is retouched The system and method stated preferably are realized with software, but the combined realization of hardware or software and hardware is also possible And be contemplated.

Fig. 7 is the second structural block diagram of data-message transmission device according to an embodiment of the present invention, as shown in fig. 7, the dress Setting includes: the 4th receiving module 72, the first distribution module 74, the 5th receiving module 76, third sending module 78, and the 6th receives mould Block 79, the second transmission module 70, is below described in detail above structure.

4th receiving module 72, for receiving the first Internet protocol IP address request message of UE transmission；First distribution Module 74 is connected to the 4th receiving module 72, for distributing the first IP address for the UE；5th receiving module 76, for receiving The second IP address request message that the UE that arrives is sent, third sending module 78 are connected to the 5th receiving module 76, for 3GPP core net sends conversation request message；6th receiving module 79 is connected to third sending module 78, for obtaining the 3GPP Core net is the second IP address of UE distribution；Second transmission module 70 is connected to the first distribution module 74 and the 6th and receives mould Block 79 is used for transmission the data message by tunnel encapsulation, wherein the source IP address or purpose IP address of the data message be Second IP address, the source IP address or purpose IP address in tunnel are the first IP address.

Fig. 8 is preferred second structural block diagram of data-message transmission device according to an embodiment of the present invention, such as Fig. 8 institute Show, the device further include: the second distribution module 82 is connected to the second transmission module 70, for receiving described in UE transmission After first IP address request message, the information in the tunnel is distributed for the UE.

A kind of processing method of PDN connection identifier is present embodiments provided, Fig. 9 is that PDN according to an embodiment of the present invention connects The first pass figure of the processing method of mark is connect, as shown in figure 9, this method comprises the following steps S902 to step S904.

Step S902:UE by access point apparatus/home gateway (Access Point/Residential Gateway, Referred to as AP/RG) message for carrying APN information is sent to AC/BNG.

Step S904:UE receives the corresponding first PDN connection mark of the APN information of the AC/BNG distribution of TWAG ' forwarding Know；Or the UE receives the corresponding 2nd PDN connection identifier of the APN information of TWAG ' distribution, wherein the 2nd PDN connection identifier It is that the TWAG ' is distributed after the message for carrying the APN information for receiving AC/BNG transmission.

Through the above steps, the message for carrying access point name APN information is sent to AC/BNG by AP/RG by UE, Then it receives the corresponding first PDN connection identifier of the APN information of the AC/BNG distribution of TWAG ' forwarding or receives TWAG ' The corresponding 2nd PDN connection identifier of the APN information of distribution, solves in the related technology that AC/BNG can not obtain APN, and can not The problem of distributing PDN connection identifier.

When implementing, UE, which can be accomplished in several ways, will carry disappearing for access point name APN information by AP/RG Breath is sent to AC/BNG, is accomplished in that UE will carry the GAS-ANQP of the APN information in the preferred embodiment Initial request message is sent to the AP/RG, trigger the AP/RG by carry APN information CAPWAP WTP event request or Radius request message is sent to the AC/BNG.

Corresponding to above preferred embodiment, when implementing, UE can be realized in the following way receives TWAG ' trusty The corresponding first PDN connection identifier of the APN information of the AC/BNG distribution of forwarding: it is logical that UE receives corresponding to for AP/RG transmission Network inquiry agreement (Access is accessed with advertising business (Generic Advertisement Service, referred to as GAS)- Network Query Protocol, referred to as ANQP) initial request message GAS-ANQP initial communication message, wherein should GAS-ANQP initial communication message carries the first PDN connection identifier, which is that the AP/RG connects Control and offer (the Control And Provisioning of corresponding to the wireless access point of AC/BNG transmission are provided Wireless Access Points, referred to as CAPWAP) wirelessly terminating point (Wireless Termination Point, letter Referred to as WTP) event request CAPWAP WTP event response or Radius response message corresponding to the Radius request message Later, it is sent to the AP/RG, and the CAPWAP WTP event response and remote identification dial user service (Remote Authentication Dial In User Service, referred to as Radius) response message carry the first PDN company Connect mark；The CAPWAP WTP event response and Radius response message are the carryings that the AC/BNG receives the TWAG ' transmission After the Radius authentication response message for having the first PDN connection identifier, sent to the AC/BNG.

It is corresponding as preferably embodiment, an APN information which can receive TWAG ' distribution in the following way The 2nd PDN connection identifier: UE receive the AP/RG transmission the GAS-ANQP corresponding to the GAS-ANQP initial request message at the beginning of Beginning response message carries the 2nd PDN connection identifier in the GAS-ANQP initial communication message, which disappears Breath is the CAPWAP WTP event response corresponding to the CAPWAP WTP event request that the AP/RG receives AC/BNG transmission Or corresponding to the Radius response message of the Radius request message after, sent to the AP/RG, and the CAPWAP WTP thing Part response and Radius response message carry the 2nd PDN connection identifier；The CAPWAP WTP event response and Radius Response message is the Radius authentication response for carrying the 2nd PDN connection identifier that the AC/BNG receives the TWAG ' transmission After message, sent to the AC/BNG.

It, can be using a variety of information that can be identified for that PDN connection as the first PDN connection identifier and second when implementing PDN connection identifier, such as: the default bearer mark for first GTP session that PDN connection triggering is established or the meeting of PMIP session Words mark, Institute of Electrical and Electric Engineers (IEEE) 802.11u message identifier, the xid of dhcp message, client connection identifier (client id), interface identifier (interferce id).

This preferred embodiment provides a kind of PDN connection identifier processing method, and Figure 10 is PDN according to an embodiment of the present invention The second flow chart of connection identifier processing method, as shown in Figure 10, this method comprises the following steps S1002 to step S1006.

Step S1002:AC/BNG receives the message for carrying APN information that UE is forwarded by AP/RG.

Step S1004:AC/BNG is that the APN information distributes corresponding first PDN connection identifier；Or the AC/BNG will be carried There is the message of the APN information to be sent to TWAG ', the 2nd PDN connection corresponding to the APN information for receiving the TWAG ' distribution is marked Know.

First PDN connection identifier or the 2nd PDN connection identifier are sent to the UE by step S1006:AC/BNG.

Through the above steps, AC/BNG receives the message for carrying APN information of AP/RG forwarding, is then the APN information It distributes corresponding first PDN connection identifier or receives the 2nd PDN connection identifier corresponding to the APN information of TWAG ' distribution, APN can not be obtained by solving AC/BNG in the related technology, and the problem of can not distribute PDN connection identifier.

When implementing, AC/BNG can be accomplished in several ways reception UE and carry APN information by what AP/RG was forwarded Message, this preferred embodiment provides the mode of being implemented as follows: what AC/BNG received AP/RG transmission carries APN letter The CAPWAP WTP event request or Radius request message of breath, wherein the CAPWAP WTP event request or Radius request Message is the AP/RG after the GAS-ANQP initial request message for carrying the APN information for receiving UE transmission, to this What AP/RG was sent.

As a preferably embodiment: AC/BNG will can carry the message of the APN information in the following way Be sent to TWAG ': the Radius authentication request message for carrying the APN information can be sent to the TWAG by the AC/BNG.It is right The APN information should be corresponded in what the preferred embodiment mode, AC/BNG can receive the TWAG ' distribution in the following way 2nd PDN connection identifier: the Radius corresponding to the Radius authentication request message that the AC/BNG receives the TWAG ' transmission recognizes Demonstrate,prove response message, wherein carry the 2nd PDN connection identifier in the Radius authentication response message.

When implementing, AC/BNG can be marked the first PDN connection identifier or the 2nd PDN connection by numerous embodiments Knowledge is sent to the UE, and in the preferred embodiment, which will correspond to the CAPWAPWTP thing of CAPWAP WTP event request Part response or the Radius response message corresponding to the Radius request message are sent to AP/RG, trigger the AP/RG and pass through correspondence In the GAS-ANQP initial request message GAS-ANQP initial communication message by the first PDN connection identifier or the 2nd PDN Connection identifier is sent to the UE, wherein the CAPWAP WTP event response and the Radius response message carry this first PDN connection identifier or the 2nd PDN connection identifier.

It, can be using a variety of information that can be identified for that PDN connection as the first PDN connection identifier and second when implementing PDN connection identifier, such as: first general packet wireless service tunnel protocol (General that PDN connection triggering is established Packet RadioService Tunnelling Protocol, referred to as GTP) session default bearer mark or PMIP The session identification of session, Institute of Electrical and Electric Engineers (IEEE) 802.11u message identifier, the xid of dhcp message, client Connection identifier (clientid), interface identifier (interferce id).

In another embodiment, a kind of PDN connection identifier processing software is additionally provided, the software is above-mentioned for executing Technical solution described in embodiment and preferred embodiment.

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

The embodiment of the invention also provides a kind of PDN connection identifier processing unit, which can be applied to UE, the PDN Connection identifier processing unit can be used to implement above-mentioned PDN connection identifier processing method and preferred embodiment, carry out Illustrate, repeat no more, the module being related in the PDN connection identifier processing unit is illustrated below.Make as following , the combination of the software and/or hardware of predetermined function may be implemented in term " module ".Although the described system of following embodiment System and method preferably realized with software, but the combined realization of hardware or software and hardware be also may and by structure Think.

Figure 11 is the first structure block diagram of PDN connection identifier processing unit according to an embodiment of the present invention, as shown in figure 11, The device includes: the 4th sending module 112, the 7th receiving module 114, the 8th receiving module 116, below to above structure progress Detailed description.

4th sending module 112, for the message for carrying access point name APN information to be sent to AC/ by AP/RG BNG；7th receiving module 114 is connected to the 4th sending module 112, and what the AC/BNG for receiving TWAG ' forwarding was distributed should The corresponding first PDN connection identifier of APN information；Or the 8th receiving module 116, it is connected to the 4th sending module 112, for receiving The corresponding 2nd PDN connection identifier of the APN information of TWAG ' distribution, wherein the 2nd PDN connection identifier is that the TWAG ' is connecing It is distributed after receiving the message that carries the APN information of AC/BNG transmission.

Figure 12 is the preferred first structure block diagram of data-message transmission device according to an embodiment of the present invention, such as Figure 12 institute Show, the 4th sending module 112 includes: the 5th sending module 1122, is connected at the beginning of for that will carry the GAS-ANQP of APN information Beginning request message is sent to the AP/RG, trigger the AP/RG by carry the APN information CAPWAP WTP event request or Radius request message is sent to the AC/BNG.

Preferably, the 7th receiving module 114 be used for receive AP/RG transmission correspond to the GAS-ANQP initial request message GAS-ANQP initial communication message；Wherein, which is that the AP/RG receives AC/BNG transmission Corresponding to the CAPWAP WTP event response of the CAPWAP WTP event request or corresponding to the Radius request message After Radius response message, sent to the AP/RG, and the CAPWAP WTP event response and Radius response message are taken With the first PDN connection identifier；The CAPWAP WTP event response and Radius response message are that the AC/BNG receives this After the Radius authentication response message for carrying the first PDN connection identifier that TWAG ' is sent, sent to the AC/BNG.

Preferably, the GAS-ANQP initial request that corresponds to that the 8th receiving module 116 is used to receive AP/RG transmission disappears The GAS-ANQP initial communication message of breath；Wherein, which is that the AP/RG receives AC/BNG hair Send corresponding to the CAPWAP WTP event response of the CAPWAP WTP event request or corresponding to the Radius request message After Radius response message, sent to the AP/RG, and the CAPWAP WTP event response and Radius response message are taken With the 2nd PDN connection identifier；The CAPWAP WTP event response and Radius response message are that the AC/BNG receives this After the Radius authentication response message for carrying the 2nd PDN connection identifier that TWAG ' is sent, sent to the AC/BNG.

The embodiment of the invention also provides a kind of PDN connection identifier processing unit, which can be applied to AC/BNG, should PDN connection identifier processing unit can be used to implement above-mentioned PDN connection identifier processing method and preferred embodiment, carry out Explanation is crossed, repeats no more, the module being related in the PDN connection identifier processing unit is illustrated below.Such as following institute It uses, the combination of the software and/or hardware of predetermined function may be implemented in term " module ".Although described in following embodiment System and method are preferably realized with software, but the combined realization of hardware or software and hardware be also may and quilt Conception.

Figure 13 is the second structural block diagram of connection identifier processing unit according to an embodiment of the present invention, as shown in figure 13, should Device includes: the 9th receiving module 131, third distribution module 132, the 6th sending module 133, the tenth receiving module 134, and the 7th Sending module 135, is below described in detail above structure.

9th receiving module 131 carries access point name APN by what AP/RG was forwarded for receiving user equipment (UE) The message of information；Third distribution module 132 is connected to the 9th receiving module 131, for for APN information distribution corresponding the One PDN connection identifier；Or the 6th sending module 133, it is connected to the 9th receiving module 131, for the APN information will to be carried Message is sent to TWAG ', the tenth receiving module 134, for receiving the 2nd PDN corresponding to the APN information of the TWAG ' distribution Connection identifier；7th sending module 135 is connected to third distribution module 132 and the tenth sending module 134, for dividing third The 2nd PDN connection identifier that the first PDN connection identifier or the tenth receiving module 134 distributed with module 132 receives is sent Give the UE.

Preferably, the 9th receiving module 131 is used to receive the CAPWAP for carrying the APN information of AP/RG transmission WTP event request or Radius request message, wherein the CAPWAP WTP event request or Radius request message are the AP/ RG is sent after the GAS-ANQP initial request message for carrying the APN information for receiving UE transmission to the AP/RG 's.

Preferably, the 6th sending module 133, the Radius authentication request message for that will carry the APN information are sent Give the TWAG '；Tenth receiving module 134, the 2nd PDN connection corresponding to the APN information for receiving the TWAG ' distribution are marked Knowledge include: the AC/BNG receive the TWAG ' transmission the Radius authentication response corresponding to the Radius authentication request message disappear Breath, wherein carry the 2nd PDN connection identifier in the Radius authentication response message.

Preferably, the 7th sending module 135 will be for that will correspond to the CAPWAP WTP event of CAPWAP WTP event request Response or the Radius response message corresponding to the Radius request message are sent to AP/RG, trigger the AP/RG by corresponding to The GAS-ANQP initial communication message of the GAS-ANQP initial request message connects the first PDN connection identifier or the 2nd PDN It connects mark and is sent to the UE, wherein the CAPWAP WTP event response and the Radius response message carry the first PDN Connection identifier or the 2nd PDN connection identifier.

It is illustrated below in conjunction with preferred embodiment, preferred embodiment below combines above-described embodiment and preferred implementation Mode.

Preferred embodiment one

The present invention provides UE by non-3 GPP access mobile network trusty, the method for carrying out more PDN connections.

For the side UE, this method comprises the following steps S1 to step S5.

Step S1:UE sends first IP address request message to network, to request distribution local ip address.

After step S3:UE obtains local ip address, second IP address request message can be sent to network, to obtain 3GPP The IP address that core net is distributed for it.

Step S5:UE sends the uplink user data message for passing through tunnel encapsulation.

For network side: this method comprises the following steps S2 to step S6.

Step S2: network receives first IP address request message of UE transmission, and local is that UE distributes IP address.

Step S4: network receives second IP address request message of UE distribution, establishes S2a to the transmission of 3GPP core net Conversation request message obtains 3GPP core net as the IP address of its distribution.

Step S6: network sends the down user data message for passing through tunnel encapsulation.

Preferred embodiment two

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, wherein agreement (Dynamic Host is arranged in DynamicHost ConfigurationProtocol, referred to as DHCP) transmit the letter such as access point (Access Point Name, referred to as APN) Breath, TWAG ' are that UE distributes tunnel outer layer IP (DHCP request message is associated by PDN connection identifier twice), and Figure 14 is root According to the UE of the embodiment of the present invention by WLAN trusty, the flow chart of the process of EPC is accessed, as shown in figure 14, this method packet Following steps S1401 is included to step S1416.

The distinctive process of non-3 gpp is executed between step S1401:UE and WLAN trusty access net.

Step S1402:AP/RG executes EAP authentication process, wherein AC/BNG, TWAG as EAP authentication person ' it can make For AAA agency；In EAP authentication response message, AC/BNG can obtain the type of service of decision from 3GPP aaa server, specifically It include: seamed service distributing, or access EPC, or both allows.

Step S1403-S1403a:UE solicits (DHCPv6)/DHCP discovery (DHCPv4) message to AC/BNG transmission, this disappears APN information may be carried in breath.After AC/BNG receives the message, following specific operation can be executed:

If carrying APN no in DHCP request message, can further it be sentenced according to the type of service of decision Disconnected, if it is seamed service distributing, then directly local is that UE distributes IP address；If allowing to access EPC, then It is forwarded to TWAG ' as DHCP relay, by DHCP request message.

If carrying APN in DHCP request message, it is considered to allow to access EPC, then it is as in DHCP After DHCP request message is forwarded to TWAG '.

Step S1404a- step S1404:TWAG ' sends notice (DHCPv6)/DHCP to UE by AC/BNG and provides message It (DHCPv4), may include UE IP address 1 in message.

Step S1405- step S1405a:UE sends request (DHCPv6)/DHCP request to TWAG ' by AC/BNG It (DHCPv4), include the GRE key of UE IP address 1 and the side UE in the message.

Step S1406a- step S1406:TWAG ' locally generates PDN connection identifier, specifically according to the APN information received It is as follows to generate principle:

If in TWAG ' in, there is no if the associated PDN connection identifier of the APN, then newly-generated PDN connection is marked Know；

If in TWAG ' in, if the existing associated PDN connection identifier of the APN, then TWAG ' is considered under identical APN Additional PDN connection establish request, also can a newly-generated PDN connection identifier.

PDN connection identifier can for the PDN connection triggering establish first GTP session default bearer identify or The session identification of PMIP session, or protocol DHCP is arranged in authentication protocol EAP authentication authorization messages, the DynamicHost of extension Xid, client connection identifier client id, the interface identifier interferce id of message, or newly-increased mark.

Then, TWAG ' is replied to UE replies (DHCPv6)/DHCP confirmation (DHCPv4), includes the address UEIP in the message 1, the GRE key, PDN connection identifier of the side TWAG ', TWAG ' user face address；TWAG ' locally saves GRE key, PDN connection mark The association of the information such as knowledge, TWAG ' user face address and APN.

Step S1407:UE is sent again to AC/BNG solicits (DHCPv6)/DHCP discovery (DHCPv4) message, the message In can carry PDN connection identifier information.After AC/BNG receives the message, according to the PDN connection identifier carried in message, make For DHCP relay, DHCP request message is forwarded to TWAG '.

After step S1408:TWAG ' receives DHCP request message, associated APN etc. can be found according to PDN connection identifier Then information sends creation session request or agent binding update messages to PDN GW, include APN. in the message

The operation of IP-CAN session establishment is executed between step S1409:PDN GW and PCRF.

Step S1410:PDN GW updates the address PDN GW by AAA Server, to HSS.

Step S1411:PDN GW sends creation conversational response to non-3 GPP access network trusty or agent binding is true Recognize message, the IP address 2 that PDN GW is UE distribution is carried in message.

Step S1412-S1413:TWAG ' sends notice (DHCPv6)/DHCP to UE by AC/BNG and provides message It (DHCPv4), include UE IP address 2 in message.

Step S1414:UE sends request (DHCPv6)/DHCP request (DHCPv4), the message to TWAG ' by AC/BNG In include UE IP address 2.

Step S1415:TWAG ' is replied to UE replies (DHCPv6)/DHCP confirmation (DHCPv4), includes UE in the message IP address 2；TWAG ' can locally save the association of APN and UE IP address 2.

Between step S1416:UE and TWAG ' by gre tunneling encapsulate carry out uplink and downlink data transmitting, UE be responsible on The encapsulation of row data and the decapsulation of downlink data, TWAG ' are responsible for the encapsulation of downlink data and the decapsulation of upstream data.

It should be noted that GRE key and TWAG ' user face address are encapsulated for gre tunneling in above-described embodiment Information.

Above-mentioned dhcp message may only be used to distribute some other parameters in addition to IP address, pass through route requests/road Distribution IP address is requested to need to increase route requests/route response then after step S1406 and S1415 and disappear by response message The process of breath, to request distribution IP address, subsequent other processes continue to execute after obtaining IP address.

When 3GPP network is UMTS, it is identical that GGSN, which replaces the function of PDN GW, Yao Zengqiang in the embodiment, 's.

Preferred embodiment three

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, wherein DHCP transmits the information such as APN, and AC/BNG is that UE distributes tunnel Outer layer IP realizes between UE and TWAG to the tunnel encapsulation of data message, twice DHCP request message by PDN connection identifier into Row association, Figure 15 are UE according to an embodiment of the present invention by WLAN trusty, access the flowchart 2 of the process of EPC, such as Shown in Figure 15, this method comprises the following steps S1501 to step S1518.

The distinctive process of non-3 gpp is executed between step S1501:UE and WLAN trusty access net.

Step S1502:AP/RG executes EAP authentication process, wherein AC/BNG can be used as AAA generation as EAP authentication person Reason；In EAP authentication response message, AC/BNG can obtain the type of service of decision from 3GPP aaa server, specifically include: having Service distributing of seam, or access EPC, or both all allow.

Step S1503:UE solicits (DHCPv6)/DHCP discovery (DHCPv4) message to AC/BNG transmission, can in the message It can carry APN information.After AC/BNG receives the message, the APN that UE is carried can be locally saved, may be marked by one Will position indicates that the APN is UE transmitting, or not by the source of UE APN carried itself and the APN information source of signing With distinguishing, then IP address 1 locally can be distributed for UE.

Step S1504:AC/BNG sends notice (DHCPv6)/DHCP to UE and provides message (DHCPv4), may in message Include UE IP address 1.

Step S1505:UE sends request (DHCPv6)/DHCP request (DHCPv4) to AC/BNG, includes UE in the message The GRE key of IP address 1 and the side UE.AC/BNG can execute following specific operation:

If the APN locally saved comes from AAA, can further it be judged according to the type of service of decision, such as If fruit is seamed service distributing, then step S1508 is directly executed；If allowing to access EPC, then follow the steps S1506。

If the APN locally saved comes from UE, S1506 is thened follow the steps.

Step S1506:AC/BNG sends Radius authentication request message to TWAG ', carries APN, UE IP address in message The GRE key of the side 1 and UE.

Step S1507:TWAG ' replys Radius authentication response message to AC/BNG, local to generate PDN connection identifier, tool Body generates principle referring to the associated description of embodiment 1；TWAG ' user face address, the GRE key of the side UE are carried in message, PDN connects Connect mark.

Step S1508:AC/BNG is replied to UE replies (DHCPv6)/DHCP confirmation (DHCPv4), includes UE in the message IP address 1, the GRE key of the side TWAG ', PDN connection identifier, TWAG ' user face address；TWAG ' locally saves GRE key, PDN The association of the information such as connection identifier, TWAG ' user face address and APN.

Step S1509-S1518: it specifically describes referring to step S1407- step S1416.

Dhcp message above may only be used to distribute some other parameters in addition to IP address, pass through route requests/road Distribution IP address is requested to need to increase routing then after step S1508 and step S1517a, S1517b and ask by response message / the process of route response message is sought, to request distribution IP address, subsequent other processes continue to execute after obtaining IP address.

Preferred embodiment four

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, DHCP transmits the information such as APN, and AC/BNG is that UE distributes tunnel outer layer IP (UE Segmentation realizes that DHCP request message passes through PDN twice to the tunnel encapsulation of data message between AC/BNG, AC/BNG and TWAG Connection identifier is associated), the difference of the preferred embodiment and preferred embodiment three is, user data UE and AC/BNG, Segmentation carries out gre tunneling encapsulation between AC/BNG and TWAG, and Figure 16 is UE according to an embodiment of the present invention by trusty WLAN accesses the flow chart 3 of the process of EPC, as shown in figure 16, this method comprises the following steps S1601 to step S1618.

The distinctive process of non-3 gpp is executed between step S1601:UE and WLAN trusty access net.

Step S1602:AP/RG executes EAP authentication process, wherein AC/BNG can be used as AAA generation as EAP authentication person Reason；In EAP authentication response message, AC/BNG can obtain the type of service of decision from 3GPP aaa server, specifically include: having Service distributing of seam, or access EPC, or both all allow.

Step S1603:UE solicits (DHCPv6)/DHCP discovery (DHCPv4) message to AC/BNG transmission, can in the message It can carry APN information.After AC/BNG receives the message, the APN that UE is carried can be locally saved, may be marked by one Will position indicates that the APN is UE transmitting, or not by the source of UE APN carried itself and the APN information source of signing With distinguishing, then IP address 1 locally can be distributed for UE.

Step S1604:AC/BNG sends notice (DHCPv6)/DHCP to UE and provides message (DHCPv4), may in message Include UE IP address 1.

Step S1605:UE sends request (DHCPv6)/DHCP request (DHCPv4) to AC/BNG, includes UE in the message The GRE key 1 of IP address 1 and the side UE.AC/BNG can execute following specific operation:

1) if the APN locally saved comes from AAA, can further it be judged according to the type of service of decision, If it is seamed service distributing, then step S1608 is directly executed；If allowing to access EPC, then follow the steps S1606 or S1606a.

2) if the APN locally saved comes from UE, S1608 is thened follow the steps.

If PDN connection identifier is locally-assigned in TWAG ', S1606 and S1607 are thened follow the steps.

Step S1606:AC/BNG sends Radius authentication request message to TWAG ', carries APN, UE IP address in message The GRE key 2 of the side 1 and AC/BNG.

Step S1607:TWAG ' replys Radius authentication response message to AC/BNG, local to generate PDN connection identifier, tool Body generates principle with preferred embodiment two, and details are not described herein；TWAG ' user face address, the GRE of the side TWAG ' are carried in message Key 2, PDN connection identifier.

If PDN connection identifier is locally-assigned in AC/BNG, S1606a and S1607a are thened follow the steps.

Step S1606a:AC/BNG locally generates PDN connection identifier, the specific principle that generates is retouched referring to the correlation of embodiment 1 It states；Then, Radius authentication request message is sent to TWAG ', carries APN, PDN connection identifier, 1 and of UE IP address in message The GRE key 2 of the side AC/BNG.

Step S1607a:TWAG ' replys Radius authentication response message to AC/BNG, carries TWAG ' user face in message Address, the GRE key 2 of the side TWAG '.

Step S1608:AC/BNG is replied to UE replies (DHCPv6)/DHCP confirmation (DHCPv4), includes UE in the message IP address 1, the GRE key 1 of the side AC/BNG, PDN connection identifier, AC/BNG user face address；AC/BNG will do it GRE key 1 Association between GRE key 2.

Step S1609-S1617: with step S1407-S1415.

When step S1618:UE sends upstream data, the gre tunneling comprising GRE key 1 can be encapsulated, after AC/BNG is received, The gre tunneling can be decapsulated, and finds associated GRE key 2, and encapsulates the gre tunneling comprising GRE key 2, is then sent to TWAG'；Conversely, downlink data.

It should be understood that GRE key 1, for the tunnel encapsulation between UE and AC/BNG, GRE key 2 is used for AC/BNG Tunnel encapsulation between TWAG ', other tunnel encapsulation explanations are the same as preferred embodiment two.

Preferred embodiment five

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, wherein DHCP transmits the information such as APN, and TWAG ' is that UE distributes tunnel outer layer IP The difference of (DHCP request message is associated by tunnel key information twice), the preferred embodiment and preferred embodiment two exists In DHCP request message is associated by tunnel information twice, and Figure 17 is that UE according to an embodiment of the present invention passes through trusted WLAN, access the flow chart four of the process of EPC, as shown in figure 17, this method comprises the following steps S1701 to step S1715.

Step S1701-S1706: referring to the step S1401-S1406 of preferred embodiment two, difference is that TWAG ' will not It is local to generate PDN connection identifier, and the information will not be transmitted.

Step S1707:UE is sent again to TWAG ' solicits (DHCPv6)/DHCP discovery (DHCPv4) message, and the message is logical The gre tunneling information in step S1201-S1206 is crossed, gre tunneling encapsulation is carried out.

After step S1708:TWAG ' receives DHCP request message, associated APN information can be found according to GRE key, Then creation session request or agent binding update messages are sent to PDN GW, includes APN in the message.

The operation of IP-CAN session establishment is executed between step S1709:PDN GW and PCRF.

Step S1710:PDN GW updates the address PDN GW by AAA Server, to HSS.

Step S1711:PDN GW sends creation conversational response to non-3 GPP access network trusty or agent binding is true Recognize message, the IP address 2 that PDN GW is UE distribution is carried in message.

Step S1712-S1713:TWAG ' sends notice (DHCPv6)/DHCP to UE and provides message (DHCPv4), in message Include UE IP address 2；The message carries out gre tunneling encapsulation by the gre tunneling information in step S1701-S1706.

Step S1714:TWAG ' is replied to UE replies (DHCPv6)/DHCP confirmation (DHCPv4), includes UE in the message IP address 2；TWAG ' can locally save the association of APN and UE IP address 2.The message passes through in step S1701-S1706 Gre tunneling information carries out gre tunneling encapsulation.

Between step S1715:UE and TWAG ' by gre tunneling encapsulate carry out uplink and downlink data transmitting, UE be responsible on The encapsulation of row data and the decapsulation of downlink data, TWAG ' are responsible for the encapsulation of downlink data and the decapsulation of upstream data.

Preferred embodiment six

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, wherein DHCP transmits the information such as APN, and AC/BNG is that UE distributes tunnel outer layer IP (realizes that DHCP request message is carried out by tunnel key information twice to the tunnel encapsulation of data message between UE and TWAG Association), the difference of the embodiment and preferred embodiment three is, DHCP request message is associated by tunnel information twice, Figure 18 is UE according to an embodiment of the present invention by WLAN trusty, the flow chart five of the process of EPC is accessed, such as Figure 18 institute Show, this method comprises the following steps S1801 to step S1816.

Step S1801-S1808: with the step S1501-S1508 of preferred embodiment three, difference is, TWAG ' will not this Ground generates PDN connection identifier, and will not transmit the information.

Step S1809-S1816: with the step S1707-S1715 of preferred embodiment five.

It should be understood that GRE key and TWAG ' user face address are encapsulated for gre tunneling in above-described embodiment Information.

Preferred embodiment seven

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, wherein DHCP transmits the information such as APN, and AC/BNG is that UE distributes tunnel outer layer (tunnel encapsulation to data message is realized in segmentation to IP between UE and AC/BNG, AC/BNG and TWAG, and DHCP request message is logical twice Tunnel key information is crossed to be associated), the difference of the embodiment and preferred embodiment four is: DHCP request message passes through twice Tunnel information is associated, and Figure 19 is UE according to an embodiment of the present invention by WLAN trusty, accesses the stream of the process of EPC Journey figure six, as shown in figure 19, this method comprises the following steps S1901 to step S1918.

Step S1901-S1908: referring to the step S1601-S1108 of preferred embodiment four, difference is that TWAG ' will not It is local to generate PDN connection identifier, and the information will not be transmitted.

Step S1909:UE is sent again to AC/BNG solicits (DHCPv6)/DHCP discovery (DHCPv4) message, the message It is to be packaged by the inclusion of the gre tunneling of GRE key 1 between UE and AC/BNG.

After step S1910:AC/BNG receives the message, decapsulation includes the gre tunneling of GRE key 1, then finds pass The GRE key 2 of connection, is packaged, and be sent to TWAG ' by the inclusion of the gre tunneling of GRE key 2.

After step S1911:TWAG ' receives DHCP request message, the letter such as associated APN can be found according to GRE key 2 Then breath sends creation session request or agent binding update messages to PDN GW, include APN. in the message

Step S1912-S1914: with step S1612-S1614.

Step S1915:TWAG ' sends notice (DHCPv6)/DHCP to AC/BNG and provides message (DHCPv4), wraps in message IP address containing UE 2；The message is packaged by the inclusion of the gre tunneling of GRE key 2, and is sent to TWAG '.

After step S1916:AC/BNG receives notice (DHCPv6)/DHCP offer message (DHCPv4), decapsulation includes GRE Then the gre tunneling of key 2 finds associated GRE key 1, is packaged by the inclusion of the gre tunneling of GRE key 1, concurrently Give UE.

Step S1917a:UE completes DHCP request/DHCP confirmation operation (DHCPv4).Tunnel encapsulation is referring to step S1915- S1916。

Step S1917b:UE completes request/answer operation (DHCPv6).Tunnel encapsulation is referring to step S1915-S1916.

When step S1918:UE sends upstream data, the gre tunneling comprising GRE key 1 can be encapsulated, after AC/BNG is received, The gre tunneling can be decapsulated, and finds associated GRE key 2, and encapsulates the gre tunneling comprising GRE key 2, is then sent to TWAG'；Conversely, downlink data.

It should be understood that for GRE key 1 for the tunnel encapsulation between UE and AC/BNG, GRE is close in above-described embodiment Key 2 is for the tunnel encapsulation between AC/BNG and TWAG '.The explanation of other tunnel encapsulations is with preferred embodiment two, herein no longer It repeats.

Above-mentioned dhcp message may only be used to distribute some other parameters in addition to IP address, pass through route requests/road Distribution IP address is requested to need to increase route requests/route response message stream then after correlation step by response message Journey, to request distribution IP address, subsequent other processes continue to execute after obtaining IP address.

Preferred embodiment eight

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, wherein EAP message transmits the information such as APN, and TWAG ' is that UE is distributed outside tunnel Layer IP, DHCP request message is associated by PDN connection identifier twice, Figure 20 be UE according to an embodiment of the present invention pass through can The WLAN of trust accesses the flow chart seven of the process of EPC, as shown in figure 20, this method comprises the following steps S2001 to step S2018。

The distinctive process of non-3 gpp is executed between step S2001:UE and WLAN trusty access net.

Step S2002-S2008:AP/RG executes EAP authentication process, wherein AC/BNG, TWAG as EAP authentication person ' It can be used as AAA agency.

In EAP authentication request message, UE may carry APN；

In EAP authentication response message, AC/BNG can obtain the type of service of decision from 3GPP aaa server, specific to wrap Include: seamed service distributing, or access EPC, or both all allow.Also, TWAG ' can distribute a PDN connection for UE Mark, and by EAP response message, pass to UE.

Wherein, if successfully triggering S2a session establishment by EAP authentication, S2003-S2006 is thened follow the steps, specifically Description can return to IP address 2, TWAG ' to TWAG ' and locally save it between APN referring to step S1408-S1411, PDN GW Association.

Step S2009:UE solicits (DHCPv6)/DHCP discovery (DHCPv4) message to AC/BNG transmission, can in the message IP address request subtype and PDN connection identifier information can be carried.If seamed service distributing be defined as one it is special If PDN connection, then a flag information is increased in the PDN connection identifier at this or in addition newly, for distinguishing seamed business It shunts and is connected with the PDN of other accesses EPC；If seamed service distributing is not defined as a special PDN connection, IP address request subtype and PDN connection identifier information can not so be carried this when.

Wherein, IP PDN GW distribution IP is locally-assigned in the representative of IP address request subtype.

AC/BNG receive solicit (DHCPv6)/DHCP discovery (DHCPv4) message after, if seamed service distributing not by If being defined as a special PDN connection, then according to whether carrying PDN connection identifier to determine whether to be transmitted to TWAG '；Such as If the seamed service distributing of fruit is defined as a special PDN connection, then according to be used to distinguish seamed service distributing and The flag bit of the PDN connection of other accesses EPC, to define whether to be transmitted to TWAG '.

If it is the PDN connection for accessing EPC, S2009a is thened follow the steps.

Step S2009a:AC/BNG solicits (DHCPv6)/DHCP discovery (DHCPv4) message to TWAG ' forwarding.

Step S2010a-S2010:TWAG ' requests subtype according to IP address, is confirmed as that IP address is locally-assigned, then divides With IP address 1, and notice (DHCPv6)/DHCP is sent to UE by AC/BNG, message (DHCPv4) is provided, it may packet in message IP address containing UE 1.

Step S2011-S2012:UE and TWAG ' execute request (DHCPv6)/DHCP request (DHCPv4) and reply (DHCPv6)/DHCP confirmation (DHCPv4) operation, in order to be further confirmed that IP address 1.

Step S2013-S2013a:UE is sent again to AC/BNG solicits (DHCPv6)/DHCP discovery (DHCPv4) message, IP address request subtype and PDN connection identifier information can be carried in the message.After AC/BNG receives the message, according to message The PDN connection identifier of middle carrying, confirmation are access EPC, then DHCP request message is forwarded to by it as DHCP relay TWAG’。

Step S2014:TWAG ' requests subtype according to IP address, and confirmation will request distribution IP address to PDN GW.

If step S2003-S2006 is not carried out, TWAG ' can find associated APN according to PDN connection identifier Etc. information, then send creation session request or agent binding update messages to PDN GW, include APN in the message.Specifically Referring to step S2003-S2006.

Step S2015-S2016:TWAG ' sends notice (DHCPv6)/DHCP to UE by AC/BNG and provides message It (DHCPv4), include UE IP address 2 in message；

Step S2017-S2017a:UE sends request (DHCPv6)/DHCP request to TWAG ' by AC/BNG It (DHCPv4), include UE IP address 2 in the message；

TWAG ' is replied to UE replies (DHCPv6)/DHCP confirmation (DHCPv4), includes UE IP address 2 in the message； TWAG ' can locally save the association of APN and UE IP address 2.

Between step S2018:UE and TWAG ' by gre tunneling encapsulate carry out uplink and downlink data transmitting, UE be responsible on The encapsulation of row data and the decapsulation of downlink data, TWAG ' are responsible for the encapsulation of downlink data and the decapsulation of upstream data.

Above-mentioned dhcp message may only be used to distribute some other parameters in addition to IP address, pass through route requests/road Distribution IP address is requested to need to increase route requests/route response message then after step 306 and 315 by response message Process, to request distribution IP address, subsequent other processes continue to execute after obtaining IP address.

Preferred embodiment nine

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, wherein EAP message transmits the information such as APN, and AC/BNG is that UE is distributed outside tunnel Layer IP, DHCP request message is associated by PDN connection identifier twice, Figure 21 be UE according to an embodiment of the present invention pass through can The WLAN of trust accesses the flow chart eight of the process of EPC, as shown in figure 21, this method comprises the following steps S2101 to step S2120。

The distinctive process of non-3 gpp is executed between step S2101:UE and WLAN trusty access net.

Step S2102-S2108: referring to step S2002- step S2008.

Step S2109:UE solicits (DHCPv6)/DHCP discovery (DHCPv4) message to AC/BNG transmission, can in the message IP address request subtype and PDN connection identifier information can be carried.If seamed service distributing be defined as one it is special If PDN connection, then a flag information is increased in the PDN connection identifier at this or in addition newly, for distinguishing seamed business It shunts and is connected with the PDN of other accesses EPC；If seamed service distributing is not defined as a special PDN connection, IP address request subtype and PDN connection identifier information can not so be carried this when.

AC/BNG receive solicit (DHCPv6)/DHCP discovery (DHCPv4) message after, if seamed service distributing not by If being defined as a special PDN connection, then according to whether carrying PDN connection identifier to determine whether subsequent processing is transmitted to TWAG'；If seamed service distributing is defined as a special PDN connection, basis is used to distinguish seamed industry Business shunts the flag bit connected with the PDN of other accesses EPC, to define whether forwarding subsequent processing to TWAG '.

Step S2110:AC/BNG sends notice (DHCPv6)/DHCP to UE and provides message (DHCPv4), may in message Include UE IP address 1.

Step S2111:UE sends request (DHCPv6)/DHCP request (DHCPv4) to AC/BNG, includes UE in the message The GRE key of IP address 1 and the side UE.

If AC/BNG judges that the PDN connection is access EPC, S2112-S2113 is thened follow the steps.

Step S2112:AC/BNG sends Radius authentication request message to TWAG ', carry in message PDN connection identifier, The GRE key of UE IP address 1 and the side AC/BNG.

Step S2113:TWAG ' replys Radius authentication response message to AC/BNG, in message with carrying TWAG ' user face Location, the GRE key of the side TWAG '.

Step S2114:TWAG ' is sent to UE replies (DHCPv6)/DHCP confirmation (DHCPv4) operation, in order to IP address 1 further confirms that.

Step S2115-S2120: referring to step S2013-S2018.

Dhcp message above may only be used to distribute some other parameters in addition to IP address, pass through route requests/road Distribution IP address is requested to need to increase route requests/route response message stream then after correlation step by response message Journey, to request distribution IP address, subsequent other processes continue to execute after obtaining IP address.

Preferred embodiment ten

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, the difference of the embodiment and preferred embodiment nine is that user data is in UE Segmentation carries out gre tunneling encapsulation between AC/BNG, AC/BNG and TWAG, and Figure 22 is UE according to an embodiment of the present invention by can The WLAN of trust accesses the flow chart nine of the process of EPC, as shown in figure 22, this method comprises the following steps S2201 to step S2220。

Step S2201-S2210: with step S2101-S2110.

Step S2211:UE sends request (DHCPv6)/DHCP request (DHCPv4) to AC/BNG, includes UE in the message The GRE key 1 of IP address 1 and the side UE.

If AC/BNG judges that the PDN connection is access EPC, S2212-S2213 is thened follow the steps.

Step S2212:AC/BNG sends Radius authentication request message to TWAG ', carries AC/BNG user face in message The GRE key 2 of address, PDN connection identifier and the side AC/BNG.

Step S2213:TWAG ' replys Radius authentication response message to AC/BNG, in message with carrying TWAG ' user face Location, the GRE key 2 of the side TWAG '.

Step S2214:AC/BNG is replied to UE replies (DHCPv6)/DHCP confirmation (DHCPv4), includes UE in the message IP address 1, the GRE key 1 of the side AC/BNG, AC/BNG user face address；AC/BNG will do it GRE key 1 and GRE key 2 it Between association.

Step S2215-S2219a: referring to step S2013-S2017.

When step S2220:UE sends upstream data, the gre tunneling comprising GRE key 1 can be encapsulated, after AC/BNG is received, The gre tunneling can be decapsulated, and finds associated GRE key 2, and encapsulates the gre tunneling comprising GRE key 2, is then sent to TWAG'；Conversely, downlink data.

Preferred embodiment 11

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, the difference of the embodiment and preferred embodiment eight is, twice DHCP request Message is associated by tunnel information, and Figure 23 is UE according to an embodiment of the present invention by WLAN trusty, accesses EPC's The flow chart ten of process, as shown in figure 23, this method comprises the following steps S2301 to step S2316.

Step S2301-S2308: referring to the step S2001-S2008 of preferred embodiment eight.

Step S2309-S2309a:UE solicits (DHCPv6)/DHCP discovery (DHCPv4) message to AC/BNG transmission, this disappears PDN connection identifier information may be carried in breath.If seamed service distributing is not defined as a special PDN connection Words, then according to whether carrying PDN connection identifier to determine whether to be transmitted to TWAG '；If seamed service distributing is defined as If one special PDN connection, then according to the type of service of the associated decision of PDN connection identifier, to decide whether to forward To TWAG '.If the type of service of decision is to allow to access EPC, decision forwards the message to TWAG '.

Step S2310:TWAG ' sends notice (DHCPv6)/DHCP to UE by AC/BNG and provides message (DHCPv4), disappears It may include UE IP address 1 in breath.

Step S2311:UE sends request (DHCPv6)/DHCP request (DHCPv4), the message to TWAG ' by AC/BNG In include UE IP address 1 and the side UE GRE key.

TWAG ' is replied to UE and is replied (DHCPv6)/DHCP confirmation (DHCPv4), in the message comprising UE IP address 1, The GRE key of the side TWAG ', TWAG ' user face address；TWAG ' locally saves GRE key, PDN connection identifier, TWAG ' user face The association of the information such as address and APN.

Step S2312:UE is sent again to TWAG ' solicits (DHCPv6)/DHCP discovery (DHCPv4) message, and the message is logical Gre tunneling information is crossed, gre tunneling encapsulation is carried out.

After step S2313:TWAG ' receives DHCP request message, associated APN information can be found according to GRE key, Then creation session request or agent binding update messages are sent to PDN GW, includes APN in the message.Other steps referring to Step S2303-S2306.

Step S2314:TWAG ' sends notice (DHCPv6)/DHCP to UE and provides message (DHCPv4), includes UE in message IP address 2；The message carries out gre tunneling encapsulation by gre tunneling information.

Step S2315:UE sends request (DHCPv6)/DHCP request (DHCPv4) to TWAG ', includes UE in the message IP address 2；

TWAG ' is replied to UE replies (DHCPv6)/DHCP confirmation (DHCPv4), includes UE IP address 2 in the message； TWAG ' can locally save the association of APN and UE IP address 2.The message carries out gre tunneling encapsulation by gre tunneling information.

Between step S2316:UE and TWAG ' by gre tunneling encapsulate carry out uplink and downlink data transmitting, UE be responsible on The encapsulation of row data and the decapsulation of downlink data, TWAG ' are responsible for the encapsulation of downlink data and the decapsulation of upstream data.

Preferred embodiment 12

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, the difference of the embodiment and preferred embodiment nine is, twice DHCP request Message is associated by tunnel information, and Figure 24 is UE according to an embodiment of the present invention by WLAN trusty, accesses EPC's The flow chart 11 of process, as shown in figure 24, this method comprises the following steps S2401 to step S2419.

Step S2401-S2408: referring to the step S2301-S2308 of preferred embodiment eight.

Step S2409:UE solicits (DHCPv6)/DHCP discovery (DHCPv4) message to AC/BNG transmission, can in the message It can carry PDN connection identifier information.If seamed service distributing is not defined as a special PDN connection, According to whether carrying PDN connection identifier to determine whether subsequent processing is transmitted to TWAG '；If seamed service distributing is defined For a special PDN connection, then according to the type of service of the associated decision of PDN connection identifier, to determine subsequent place Whether reason is transmitted to TWAG '.If the type of service of decision is to allow to access EPC, decision is forwarded the message to TWAG’。

Step S2410:TWAG ' sends notice (DHCPv6)/DHCP to UE by AC/BNG and provides message (DHCPv4), disappears It may include UE IP address 1 in breath.

Step S2411:UE sends request (DHCPv6)/DHCP request (DHCPv4), the message to TWAG ' by AC/BNG In include UE IP address 1 and the side UE GRE key.

Step S2412:AC/BNG sends Radius authentication request message to TWAG ', carry in message PDN connection identifier, The GRE key of UE IP address 1 and the side AC/BNG.

Step S2413:TWAG ' replys Radius authentication response message to AC/BNG, in message with carrying TWAG ' user face Location, the GRE key of the side TWAG '.

Step S2414:TWAG ' is sent to UE replies (DHCPv6)/DHCP confirmation (DHCPv4) operation, in order to IP address 1 further confirms that.

Step S2415-S2419: referring to step S2312-S2316.

Illustrate: in above-described embodiment, GRE key and TWAG ' user face address are the information encapsulated for gre tunneling.

Preferred embodiment 13

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, the difference of the embodiment and preferred embodiment ten is, twice DHCP request Message is associated by tunnel information, and Figure 25 is UE according to an embodiment of the present invention by WLAN trusty, accesses EPC's The flow chart 12 of process, as shown in figure 25, this method comprises the following steps S2501 to step S2520.

Step S2501-S2508: with the step S2001-S2008 of preferred embodiment eight.

Step S2509:UE solicits (DHCPv6)/DHCP discovery (DHCPv4) message to AC/BNG transmission, can in the message It can carry PDN connection identifier information.If seamed service distributing is not defined as a special PDN connection, According to whether carrying PDN connection identifier to determine whether subsequent processing is transmitted to TWAG '；If seamed service distributing is defined For a special PDN connection, then according to the type of service of the associated decision of PDN connection identifier, to determine subsequent place Whether reason is transmitted to TWAG '.If the type of service of decision is to allow to access EPC, decision is forwarded the message to TWAG’。

Step S2510:TWAG ' sends notice (DHCPv6)/DHCP to UE by AC/BNG and provides message (DHCPv4), disappears It may include UE IP address 1 in breath.

Step S2511:UE sends request (DHCPv6)/DHCP request (DHCPv4), the message to TWAG ' by AC/BNG In include UE IP address 1 and the side UE GRE key 1.

Step S2512:AC/BNG sends Radius authentication request message to TWAG ', carry in message PDN connection identifier, The GRE key 2 of AC/BNG user face address and the side AC/BNG.

Step S2513:TWAG ' replys Radius authentication response message to AC/BNG, in message with carrying TWAG ' user face Location, the GRE key 2 of the side TWAG '.

Step S2514:TWAG ' is sent to UE replies (DHCPv6)/DHCP confirmation (DHCPv4) operation, which includes AC/BNG user face address, the GRE key 1 of the side AC/BNG.

Step S2515-S2520: referring specifically to seven step S1909-S1918 of preferred embodiment.

Embodiment 14

This preferred embodiment provides a kind of UE and is retouched in the present embodiment by non-3 GPP access network access to mobile network UE has been stated by WLAN trusty, has accessed EPC, wherein the information such as 802.11u message transmission APN and EAP message transmit APN Etc. information other processes it is similar.Figure 26 is UE according to an embodiment of the present invention by WLAN trusty, accesses the process of EPC Flow chart 13, as shown in figure 26, this method comprises the following steps S2601 to step S2612.

The flow processing inside WLAN is executed between step S2601:UE and WLAN trusty access net, for example includes: Probe operation between UE and AP, the CAPWAP session establishment between AP and AC or the operation between UE and RG etc.；

The operation of GAS-ANQP request/response is executed between step S2602-S2603:UE and AP/RG.

Step S2604:UE may execute some operation associated and identifying procedure inside WLAN.

EAP authentication and authorization flow are completed between step S2605:UE and 3GPP AAA.

Step S2606:UE sends GAS-ANQP initial request message to AP/RG, carries APN information in the message；

After step S2607:AP/RG receives above-mentioned message, CAPWAP WTP event request/Radius is sent to AC/BNG and is recognized Request message is demonstrate,proved, carries APN information in message.

After AC/BNG receives above-mentioned message, Radius authentication request message can be sent to TWAG ', if AC/BNG is distributed If PDN connection identifier, S2108a-S2109a is thened follow the steps, if TWAG ' distributes PDN connection identifier, executes step Rapid S2608b-S2609b.

Step S2608a-S2609a:AC/BNG can send Radius authentication request message to TWAG ', include APN in message With PDN connection identifier information.

Step S2608b-S2609b:AC/BNG can send Radius authentication request message to TWAG ', include APN in message Information；In Radius authentication response message, TWAG ' can return to PDN connection identifier to AC/BNG.

The principle of specific distribution PDN connection identifier is as follows:

1) if there is no the associated PDN connection identifier of the APN, then a newly-generated PDN connection identifier；

2) if the associated PDN connection identifier of the existing APN, TWAG ' is considered additional under identical APN Request is established in PDN connection, also can a newly-generated PDN connection identifier.

3) PDN connection identifier can for the PDN connection triggering establish first GTP session default bearer identify or The session identification of PMIP session, or 802.11u message, the xid of DynamicHost setting Protocol DHCP messages, client connect Meet mark client id, interface identifier interferce id, or newly-increased mark.

After step S2610:AC/BNG receives above-mentioned message, CAPWAP/Radius authentication response message is sent to AP/RG, The message carries PDN connection identifier.

Step S2611:AP/RG sends GAS-ANQP initial communication message to UE, which carries PDN connection identifier.

Step S2612: with step S2009-S2018 or S2109-S2120 or S2209-S2220 or S2309- S2316 or S2409-S2419 or S2509-S2520.

Through the foregoing embodiment, data message transmission method, PDN connection identifier processing method and device are provided, is passed through By sending the first IP address request message to non-3 GPP access network trusty, receive non-3 GPP access network trusty is UE First IP address of UE distribution, then UE is obtained by sending the second IP address request message to non-3 GPP access network trusty Taking 3GPP core net is the second IP address of UE distribution, realizes the different PDN of UE and is distinguished by different IP address, thus Solve the problems, such as that UE is poor by non-3 GPP access network trusty progress data-message transmission Reliability comparotive in the related technology, and Improve the reliability of data-message transmission, it should be noted that these technical effects are not above-mentioned all embodiments Possessed, some have the technical effect that certain preferred embodiments could obtain.

Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, so as to be stored in It is performed by computing device in storage device, perhaps they are fabricated to each integrated circuit modules or will be in them Multiple modules or step be fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hard Part and software combine.

Above this is merely a preferred embodiment of the present invention, and is not intended to restrict the invention, for the technology of this field For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of data message transmission method, characterized by comprising:

User equipment (UE) sends the first Internet protocol IP address to non-third generation affiliate 3GPP access net trusty and asks Message is sought, the first IP address that the non-3 GPP access network trusty is UE distribution is received；

The UE sends the second IP address request message to the non-3 GPP access network trusty, and receiving 3GPP core net is institute State the second IP address of UE distribution；

The UE is transmitted through the data message of tunnel encapsulation, wherein the source IP address of the data message or destination IP Location is the second IP address, and the source IP address or purpose IP address in the tunnel are the first IP address；

Wherein, the UE sends the first IP address request message to non-3 GPP access network trusty, receives described trusty Non-3 GPP access network is that the first IP address of UE distribution includes: the UE to access controller/wideband network gateway AC/ BNG sends the first IP address request message, obtains the first IP address that the AC/BNG is UE distribution.

2. the method according to claim 1, wherein UE is to the first IP of non-3 GPP access network trusty transmission Location request message receives the first IP address that the non-3 GPP access network trusty is UE distribution further include:

The UE sends the first IP address request message to WLAN WLAN access gateway TWAG ' trusty, obtains institute State the first IP address that TWAG ' is UE distribution.

3. the method according to claim 1, wherein the UE be transmitted through tunnel encapsulation data message it Before, further includes:

The UE receives the information in the tunnel that the non-3 GPP access network trusty is UE distribution, wherein described Tunnel information be the non-3 GPP access network trusty receive the first IP address request message that the UE is sent it It is afterwards UE distribution.

4. according to the method in claim 2 or 3, which is characterized in that

When the UE sends the first IP address request message to AC/BNG, AC/BNG is accessed to WLAN trusty Gateway TWAG ' sends Radius request message, receives the information in the tunnel of the TWAG ' distribution.

5. according to the method described in claim 4, it is characterized in that,

The information in the tunnel includes: the key in the tunnel and/or the local terminal IP address in the tunnel.

6. according to claim 1 to method described in any one of 3,5, which is characterized in that

The first IP address request message passes through packet data network PDN with the second IP address request message and connects mark Knowledge is associated or is associated by the information in the tunnel.

7. according to the method described in claim 6, it is characterized in that,

The first IP address request message includes: DynamicHost setting Protocol DHCP messages；

The second IP address request message includes: the dhcp message.

8. the method according to claim 1, wherein

Before the UE sends the first IP address request message to the non-3 GPP access network trusty or described When UE sends the first IP address request message to the non-3 GPP access network trusty, the UE passes through following message extremely One of few transmitting access point name APN information: 802.11 message of Institute of Electrical and Electric Engineers IEEE, DynamicHost setting Protocol DHCP messages, Extensible Authentication Protocol EAP message.

9. a kind of data message transmission method, characterized by comprising:

Non- third generation affiliate 3GPP access net trusty is with receiving the first Internet Protocol IP that user equipment (UE) is sent Location request message distributes the first IP address for the UE；

The non-3 GPP access network trusty receives the second IP address request message that the UE is sent, and sends out to 3GPP core net Conversation request message is sent, and receives the second IP address that the 3GPP core net is UE distribution；

The non-3 GPP access network trusty is transmitted through the data message of tunnel encapsulation, wherein the source of the data message Perhaps purpose IP address is the source IP address in the second IP address tunnel to IP address or purpose IP address is the first IP Location；

Wherein, the non-3 GPP access network trusty receives the first IP address request message that the UE is sent, for institute Stating UE and distributing first IP address includes: that access controller/wideband network gateway AC/BNG receives the described of the UE transmission First IP address request message distributes first IP address for the UE.

10. according to the method described in claim 9, it is characterized in that, being transmitted through in the non-3 GPP access network trusty Before the data message of tunnel encapsulation, further includes:

After the non-3 GPP access network trusty receives the first IP address request message that the UE is sent, for institute State the information that UE distributes the tunnel.

11. according to the method described in claim 10, it is characterized in that,

12. the method according to any one of claim 9 to 11, which is characterized in that

13. the method according to any one of claim 9 to 11, which is characterized in that

The second IP address request message includes: the dhcp message.

14. a kind of processing method of packet data network PDN connection identifier, characterized by comprising:

User equipment (UE) is sent the message for carrying access point name APN information by access point apparatus/home gateway AP/RG To AC/BNG；

The UE receives the APN letter of the AC/BNG distribution of WLAN access gateway TWAG ' forwarding trusty Cease corresponding first PDN connection identifier；Or the UE receives the corresponding 2nd PDN connection mark of the APN information of TWAG ' distribution Know, wherein the 2nd PDN connection identifier is that the TWAG ' believes in the APN that carries for receiving the AC/BNG transmission It is distributed after the message of breath.

15. according to the method for claim 14, which is characterized in that UE will carry access point name APN letter by AP/RG The message of breath is sent to AC/BNG

The UE will carry universal advertising business-access network inquiry agreement GAS-ANQP initial request of the APN information Message is sent to the AP/RG, and the CAPWAP WTP event request of the APN information or remote will be carried by triggering the AP/RG Journey certification dial-in user service Radius request message is sent to the AC/BNG.

16. according to the method for claim 15, which is characterized in that the UE receives the described of TWAG ' forwarding trusty AC/BNG distribution the corresponding first PDN connection identifier of the APN information include:

The UE receives the GAS-ANQP initial communication corresponding to the GAS-ANQP initial request message that AP/RG is sent and disappears Breath；

Wherein, the GAS-ANQP initial communication message is that the AP/RG corresponding to of receiving that the AC/BNG sends is described The CAPWAP WTP event response of CAPWAP WTP event request or corresponding to the Radius request message Radius respond After message, what Xiang Suoshu AP/RG was sent, and the CAPWAP WTP event response and Radius response message carry State the first PDN connection identifier；The CAPWAP WTP event response and Radius response message are that the AC/BNG receives institute After the Radius authentication response message for carrying the first PDN connection identifier for stating TWAG ' transmission, Xiang Suoshu AC/BNG hair It send.

17. according to the method for claim 15, which is characterized in that the UE receives the APN information pair of TWAG ' distribution The 2nd PDN connection identifier answered includes:

The UE receives the GAS-ANQP initial communication corresponding to the GAS-ANQP initial request message that the AP/RG is sent Message；

Wherein, the GAS-ANQP initial communication message is that the AP/RG corresponding to of receiving that the AC/BNG sends is described The CAPWAP WTP event response of CAPWAP WTP event request or corresponding to the Radius request message Radius respond After message, what Xiang Suoshu AP/RG was sent, and the CAPWAP WTP event response and Radius response message carry State the 2nd PDN connection identifier；The CAPWAP WTP event response and Radius response message are that the AC/BNG receives institute After the Radius authentication response message for carrying the 2nd PDN connection identifier for stating TWAG ' transmission, Xiang Suoshu AC/BNG hair It send.

18. method described in any one of 4 to 17 according to claim 1, which is characterized in that

The first PDN connection identifier and the 2nd PDN connection identifier are one of the following:

The default bearer mark of first GTP session that PDN connection triggering is established or the session identification of PMIP session, it is electrical and Electronic Engineering Association's IEEE 802.11u message identifier, the xid of dhcp message, client connection identifier client id, interface Identify interferce id.

19. a kind of processing method of packet data network PDN connection identifier, characterized by comprising:

Access controller/wideband network gateway AC/BNG receives user equipment (UE) and carries Access Point Name by what AP/RG was forwarded Claim the message of APN information；

The AC/BNG is that the APN information distributes corresponding first PDN connection identifier；Or the AC/BNG will carry it is described The message of APN information is sent to WLAN access gateway TWAG ' trusty, receives corresponding to for the TWAG ' distribution 2nd PDN connection identifier of the APN information；

The first PDN connection identifier or the 2nd PDN connection identifier are sent to the UE by the AC/BNG.

20. according to the method for claim 19, which is characterized in that AC/BNG receives user equipment (UE) and forwarded by AP/RG The message for carrying APN information include:

The AC/BNG receive the CAPWAP WTP event request for carrying the APN information that the AP/RG is sent or Radius request message, wherein the control of the wireless access point and provide the wireless terminating point WTP event request of CAPWAP or Radius request message is the AP/RG initial in the GAS-ANQP for carrying the APN information for receiving the UE transmission After request message, what Xiang Suoshu AP/RG was sent.

21. according to the method for claim 19, which is characterized in that

It includes: described in the AC/BNG will be carried that the message for carrying the APN information is sent to TWAG ' by the AC/BNG The Radius authentication request message of APN information is sent to the TWAG '；

The 2nd PDN connection identifier corresponding to the APN information that the AC/BNG receives the TWAG ' distribution includes: described AC/BNG receives the Radius authentication response message corresponding to the Radius authentication request message that the TWAG ' is sent, In, the 2nd PDN connection identifier is carried in the Radius authentication response message.

22. according to the method for claim 20, which is characterized in that the AC/BNG by the first PDN connection identifier or It includes following one that 2nd PDN connection identifier, which is sent to the UE:

When the AC/BNG receives the CAPWAP WTP event request for carrying the APN information that the AP/RG is sent, institute It states AC/BNG and the CAPWAP WTP event response for corresponding to CAPWAP WTP event request is sent to AP/RG, trigger the AP/ RG is marked the first PDN connection by corresponding to the GAS-ANQP initial communication message of the GAS-ANQP initial request message Know or the 2nd PDN connection identifier is sent to the UE, wherein the CAPWAP WTP event response carries described first PDN connection identifier or the 2nd PDN connection identifier；

It is described when the AC/BNG receives the Radius request message for carrying the APN information that the AP/RG is sent The Radius response message for corresponding to the Radius request message is sent to AP/RG by AC/BNG, is triggered the AP/RG and is passed through GAS-ANQP initial communication message corresponding to the GAS-ANQP initial request message is by the first PDN connection identifier or institute It states the 2nd PDN connection identifier and is sent to the UE, wherein the Radius response message carries the first PDN connection mark Knowledge or the 2nd PDN connection identifier.

23. method described in any one of 9 to 22 according to claim 1, which is characterized in that

PDN connection triggering establish first general packet wireless service tunnel protocol GTP session default bearer mark or The session identification of PMIP session, Institute of Electrical and Electric Engineers IEEE 802.11u message identifier, the xid of dhcp message, visitor Family end connection identifier client id, interface identifier interferce id.

24. a kind of data-message transmission device is applied to UE, characterized by comprising:

First sending module, for sending the first Internet Protocol IP to non-third generation affiliate 3GPP access net trusty Address request；

First receiving module, for receiving the first IP address that the non-3 GPP access network trusty is UE distribution；

Second sending module, for sending the second IP address request message to the non-3 GPP access network trusty；

Second receiving module, for receiving the second IP address that 3GPP core net is UE distribution；

First transmission module is used for transmission the data message by tunnel encapsulation, wherein the source IP address of the data message or Person's purpose IP address is the second IP address, and the source IP address or purpose IP address in the tunnel are the first IP address；

Wherein, first sending module is specifically used for: with sending the first IP to access controller/wideband network gateway AC/BNG Location request message；First receiving module is specifically used for: obtaining the first IP address that the AC/BNG is UE distribution.

25. device according to claim 24, which is characterized in that

First sending module is also used to send first IP address to WLAN access gateway TWAG ' trusty Request message；First receiving module is used to obtain first IP address that the TWAG ' is UE distribution.

26. device according to claim 24, which is characterized in that further include:

Third receiving module, for receiving the tunnel information that the non-3 GPP access network trusty is UE distribution, wherein The tunnel information is that the non-3 GPP access network trusty receives first IP address request that the UE is sent and disappears After breath, for UE distribution.

27. a kind of data-message transmission device is applied to non-third generation affiliate 3GPP trusty and accesses net, feature exists In including:

4th receiving module, for receiving the first Internet protocol IP address request message of user equipment (UE) transmission；

First distribution module, for distributing the first IP address for the UE；

5th receiving module, the second IP address request message sent for receiving the UE；

Third sending module, for sending conversation request message to 3GPP core net；

6th receiving module, for receiving the second IP address that the 3GPP core net is UE distribution；

Second transmission module is used for transmission the data message by tunnel encapsulation, wherein the source IP address of the data message or Person's purpose IP address is the second IP address, and the source IP address or purpose IP address in the tunnel are the first IP address；

Wherein, the 4th receiving module and first distribution module are applied particularly to access controller/wideband network gateway In AC/BNG.

28. device according to claim 27, which is characterized in that further include:

Second distribution module is the UE points after receiving the first IP address request message that the UE is sent Information with the tunnel.

29. a kind of packet data network PDN connection identifier processing unit is applied to user equipment (UE), characterized by comprising:

4th sending module, for the message for carrying access point name APN information to be sent to AC/BNG by AP/RG；

7th receiving module, for receiving the AC/BNG distribution of WLAN access gateway TWAG ' forwarding trusty The corresponding first PDN connection identifier of the APN information；Or the 8th receiving module, for receiving the APN of TWAG ' distribution The corresponding 2nd PDN connection identifier of information, wherein the 2nd PDN connection identifier is that the TWAG ' is receiving the AC/ It is distributed after the message for carrying the APN information that BNG is sent.

30. device according to claim 29, which is characterized in that the 4th sending module includes:

5th sending module, for the GAS-ANQP initial request message for carrying the APN information to be sent to the AP/ RG triggers the AP/RG and is sent to the CAPWAP WTP event request for carrying the APN information or Radius request message The AC/BNG.

31. device according to claim 30, which is characterized in that

7th receiving module is used to receive the GAS- corresponding to the GAS-ANQP initial request message of AP/RG transmission ANQP initial communication message；

32. device according to claim 30, which is characterized in that

8th receiving module is used to receive that the AP/RG to send corresponds to the GAS-ANQP initial request message GAS-ANQP initial communication message；

33. a kind of packet data network PDN connection identifier processing unit is applied to access controller/wideband network gateway AC/ BNG, characterized by comprising:

9th receiving module carries disappearing for access point name APN information by what AP/RG was forwarded for receiving user equipment (UE) Breath；

Third distribution module, for distributing corresponding first PDN connection identifier for the APN information；Or the 6th sending module, it uses In the message for carrying the APN information is sent to WLAN access gateway TWAG ' trusty, the tenth receives mould Block, for receiving the 2nd PDN connection identifier corresponding to the APN information of the TWAG ' distribution；

7th sending module, for the first PDN connection identifier or the 2nd PDN connection identifier to be sent to the UE.

34. device according to claim 33, which is characterized in that

9th receiving module is used to receive the CAPWAP WTP event for carrying the APN information that the AP/RG is sent Request or Radius request message, wherein the CAPWAP WTP event request or Radius request message are that the AP/RG exists After receiving the GAS-ANQP initial request message for carrying the APN information that the UE is sent, Xiang Suoshu AP/RG is sent 's.

35. device according to claim 34, which is characterized in that

6th sending module, it is described for the Radius authentication request message for carrying the APN information to be sent to TWAG'；

Tenth receiving module, the 2nd PDN connection corresponding to the APN information for receiving the TWAG ' distribution are marked Knowledge includes: that the AC/BNG receives the Radius certification corresponding to the Radius authentication request message that the TWAG ' is sent Response message, wherein carry the 2nd PDN connection identifier in the Radius authentication response message.

36. device according to claim 34, which is characterized in that the 7th sending module is used for:

When receiving the CAPWAP WTP event request for carrying the APN information that the AP/RG is sent, will correspond to The CAPWAP WTP event response of CAPWAP WTP event request is sent to AP/RG, and it is described by corresponding to trigger the AP/RG The GAS-ANQP initial communication message of GAS-ANQP initial request message is by the first PDN connection identifier or the 2nd PDN Connection identifier is sent to the UE, wherein the CAPWAP WTP event response carries the first PDN connection identifier or institute State the 2nd PDN connection identifier；Or,

When receiving the Radius request message for carrying the APN information that the AP/RG is sent, will correspond to described The Radius response message of Radius request message is sent to AP/RG, triggers the AP/RG by corresponding to the GAS-ANQP The GAS-ANQP initial communication message of initial request message is by the first PDN connection identifier or the 2nd PDN connection identifier It is sent to the UE, wherein the Radius response message carries the first PDN connection identifier or the 2nd PDN connects Connect mark.