CN102457444A

CN102457444A - System and method for combining fixed network and mobile network

Info

Publication number: CN102457444A
Application number: CN2010105174567A
Authority: CN
Inventors: 霍玉臻; 毕以峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2010-10-22
Filing date: 2010-10-22
Publication date: 2012-05-16
Anticipated expiration: 2030-10-22
Also published as: CN102457444B; WO2012051897A1

Abstract

The invention discloses a system and a method for combining a fixed network and a mobile network. The system is characterized in that: aiming at the fixed network in a bridge pattern, an X-mobile anchor gateway (X-MAG) used for realizing trusted non 3rd generation partnership project (3GPP) access is arranged and connected between the fixed network and the mobile network, a Ya interface is arranged between user equipment (UE) and a broadband network gateway/broadband remote access server (BNG/BRAS), and a Yb interface is arranged between the BNG/BRAS and the X-MAG, so the UE can access an evolved packet system (EPS) of the mobile network by the fixed network in the bridge pattern through the X-MAG in a trusted non 3GPP IP access way; and aiming at the fixed network in a route pattern, a point-to-point protocol (PPP) signaling is borne by supporting the use of a layer 2 tunneling protocol (L2TP) on a terminal and the X-MAG based on the conventional framework. By the system and the method, the UE can realize the trusted non 3GPP access in a simple and feasible way, namely the UE can access the mobile network through the fixed network in the bridge pattern or the route pattern, and the combination between the fixed network and the mobile network is realized.

Description

A kind of converging fixed network and mobile network's system and method

Technical field

The present invention relates to fixed network and mobile network's integration technology, relate in particular to a kind of converging fixed network and mobile network's system and method.

Background technology

Fig. 1 is third generation partner program (3rd Generation Partnership Project; 3GPP) the grouping system of evolution (Evolved Packet System; EPS) configuration diagram; As shown in Figure 1; EPS by the UMTS land radio access web of evolution (Evolved Universal Terrestrial RadioAccess Network, E-UTRAN), Mobility Management Entity (Mobility Management Entity, MME), gateway (Serving Gateway; S-GW), grouped data network gateway (Packet DataNetwork Gateway; P-GW/PDN GW), home subscriber server (Home Subscriber Server, HSS), (Policyand Charging Rules Function, PCRF) entity and other support nodes are formed for 3GPP authentication and authorization charging (3GPP AAA) server, "Policy and Charging Rules Function.Wherein, MME is responsible for the processing of mobile management, Non-Access Stratum signaling, user's chain of command related works such as the contextual management of mobile management; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, between E-UTRAN and P-GW, transmits data, and is responsible for pending datas such as paging are carried out buffer memory; P-GW then is that (Packet Data Network, borde gateway PDN) are responsible for realizing the access of PDN and between EPS and PDN, are transmitted function such as data for grouping system and the packet data network of 3GPP evolution.

In the EPS system, when UE inserted through E-UTRAN, (General Data Transfer Platform GTP), also can adopt proxy mobile IPv 6 (PMIPv6) agreement can to adopt the conventional data transmission platform between S-GW and the P-GW; And the EPS system realizes and the intercommunication of non-3GPP network that through the S2a/b/c interface P-GW is as the anchor point between 3GPP and the non-3GPP network.Wherein, as shown in Figure 1, non-3 GPP system is divided into the non-3GPP IP access of trusted and trustless non-3GPP IP inserts, and the non-3GPP IP of trusted inserts and can directly pass through S2a and P-GW interface; Trustless non-3GPP IP inserts the packet data gateway that needs through evolution, and (Evolved Packet Data Gateway ePDG) links to each other with P-GW, and the interface between ePDG and the P-GW is S2b.The S2a interface is supported mobile IPv 4 (MIPv4) agreement and PMIPv6 agreement; The S2b interface is supported the PMIPv6 agreement; S2c is the interface between UE and the P-GW, and (Dual Stack Mobile IPv6, DSMIPv6) agreement provide control and mobile management to adopt two stack mobile IP v 6s.

In the EPS system, (Policy and charging enforcementfunction PCEF) is present among the P-GW, and PCRF and P-GW are through Gx interface exchange message for strategy and charge execution function.When the interface between S-GW and the P-GW during based on PMIPv6; Resident among the S-GW have bearing binding and an event reporting function (Bearer Binding and Event Reporting Function; BBERF) entity passes through Gxc interface exchange message between S-GW and the PCRF; When UE inserted through the non-3GPP IP of trusted connecting system, also resident in the non-3GPP IP of the trusted IAD had a BBERF, between trusted non-3GPP IP IAD and the PCRF through Gxa interface exchange message.

Fig. 2 is the composition configuration diagram of existing fixed network; As shown in Figure 2; UE is through routing gateway (Routing Gateway; RG), Access Network (Access Network, AN), (Broadband Network Gateway/Broadband Remote AccessServer BNG//BRAS) is linked into external network PDN to wideband network gateway/Broadband Remote Access Server according to this.Here, comprise in the said Access Network DSLAM (Digital Subscriber Line Access Multiplexer, DSLAM), (Optical Network Terminal ONT) waits network element to ONT Optical Network Terminal; Said external network PDN can be Internet or operator's enterprise network etc.Wherein, UE can be linked into the AAA of broadband forum (Broadband Forum AAA, BBF AAA) server through BNG/BRAS, accomplishes access authentication and authentication; BNG/BRAS obtains from BPCF and carries and the charging control strategy, accomplishes management and charging to the fixed network access-in resource.

In fixed network is disposed, there are two kinds of deployment modes:

1) route pattern, promptly RG exists as a router.In this scene; UE inserts RG through WiFiAP (Wireless Fidelity Access Point WiFi access point), inserts BNG//BRAS through AN, and this moment, the IP address of UE was distributed by RG that (for example: UE inserts RG; Adopt mode authentication on RG of user name password; Authentication success RG distributes home address for the user), (for example: when RG powered on, RG initiated authentication to BRAS/BNG and the IP address of RG is distributed by BRAS/BNG; BRAS/BNG distributes the address for this RG), this moment, RG need do the IP address transition.

2) bridge mode, promptly RG exists as a bridging device.In this scene; UE inserts through WiFi AP; Insert BNG//BRAS through AN and (also have RG certainly therein, but the RG of this moment is a two-layer equipment, is not user's distributing IP address; And the connection between UE and the BRAS is two layers connection), this moment, the IP address of UE was distributed by BRAS/BNG.

For ease can unified management to mobile network and fixed network, operator hopes to realize fixed network and mobile network's fusion, like this, the terminal can both be linked into network mobile, fixing and fusing respectively from different access points through unified identity.

According to above-mentioned description to mobile network and fixed network, the non-3GPP IP access module that fixed network can be used as mobile network EPS inserts, and different access waies such as S2a, S2b and S2c are arranged.

When adopting the S2a access way, and fixed network is when being route pattern, and mobile anchor point gateway (X-MAG) is connected between BNG/BRAS and mobile network's the P-GW of fixed network, is used to realize that the non-3GPP of trusted inserts.Link to each other through the Y interface between UE and the X-MAG, make UE can pass through X-MAG via fixed network, with the EPS of the non-3GPP access way of trusted access to mobile network.X-MAG is used to handle the control signaling of UE access to mobile network, and route UE sends out outside the mobile network or the data of reception.Fig. 3, Fig. 4 are respectively the two kinds of network architecture sketch mapes through the fixed network access to mobile network of route pattern of UE in the prior art, and X-MAG can link to each other with 3GPPAAA server or 3GPP AAA agency through the BBF aaa server in the fixed network among Fig. 3; X-MAG directly links to each other with 3GPP AAA or 3GPPAAA agency among Fig. 4.

But the framework that Fig. 3, Fig. 4 proposed only is applicable to the fixed network of route pattern, can not realize the fixed network of bridge mode and the fusion that the mobile network passes through the S2a interface.

In addition, for the framework of realizing that Fig. 3, Fig. 4 propose, use UE on the IP layer, directly to carry the flow process of the simple UE of ppp protocol, but this method is incorrect, can't realize through X-MAG access EPS.Because at first, PPP is the agreement of point-to-point, and when having BNG/BRAS in the path, the PPP signaling can't arrive X-MAG; Secondly, according to prior art, ppp protocol can't directly be carried on the IP layer.Therefore, also there is not to realize at present the idiographic flow of Fig. 3, framework that Fig. 4 proposes.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of converging fixed network and mobile network's system and method, can make UE pass through the fixed network access to mobile network of bridge mode or route pattern, thereby realize fixed network and mobile network's fusion.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of converging fixed network and mobile network's system comprises: fixed network, mobile network, mobile anchor point gateway X-MAG and UE; Wherein,

Said X-MAG is connected between wideband network gateway/Broadband Remote Access Server BNG/BRAS and mobile network's the grouped data network gateway P-GW of fixed network; Be used to handle the control signaling of UE access to mobile network, and route UE sends out outside the mobile network or the data of reception;

Between said UE and the said BNG/BRAS Ya interface is set, between said BNG/BRAS and the said X-MAG Yb interface is set.

The chain of command protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects BNG/BRAS, being carried on the IP layer is UDP layer, Yb chain of command protocol layer; Accordingly, in the protocol stack on the Yb interface of said BNG/BRAS, UDP layer, Yb chain of command protocol layer are set on the IP layer; In the chain of command protocol stack of the Ya interface of said UE, on Ethernet/802.11 serial protocols layer, directly carry Ya chain of command agreement; Accordingly, in the chain of command protocol stack on the Ya interface of said BNG/BRAS, on the Ethernet layer, directly carry Ya chain of command agreement; The chain of command protocol stack of said P-GW is identical with the chain of command protocol stack of the side of said X-MAG connection P-GW.

The control signaling that said X-MAG handles the UE access to mobile network is:

When UE need send the chain of command signaling, said UE sent the chain of command signaling and gives BNG/BRAS; After said BNG/BRAS receives the chain of command signaling from UE,, and be responsible for the chain of command signaling is encapsulated in the tunnel, be transmitted to X-MAG for the user creates or seek correct tunnel; After said X-MAG receives the signaling from said BNG/BRAS, the chain of command signaling from UE in this signaling is taken out, and operate accordingly;

When X-MAG need send the chain of command signaling, X-MAG was encapsulated in the chain of command signaling in the tunnel, and sent to BNG/BRAS through correct tunnel; After said BNG/BRAS receives the signaling from said X-MAG, take out chain of command signaling wherein, and be transmitted to UE; Said UE operates according to the chain of command signaling of receiving accordingly.

The user face protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects BNG/BRAS, being carried on the IP layer is UDP layer, Yb user plane protocol layer; Accordingly, in the user face protocol stack on the Yb interface of said BNG/BRAS, UDP layer, Yb user plane protocol layer are set on the IP layer; In the user face protocol stack of the Ya interface of said UE, on Ethernet/802.11 serial protocols layer, carry Ya user plane protocol layer, carry the IP layer on the said Ya user plane protocol layer; Accordingly, in the user face protocol stack on the Ya interface of said BNG/BRAS, on the Ethernet layer, directly carry the Ya user plane protocol; The chain of command protocol stack of said P-GW is to carry the IP layer again in the superiors of the user face protocol stack of the side of said X-MAG connection P-GW.

The data that said X-MAG route UE sends out outside the mobile network or receives are:

When UE need send user face data, upstream data wrapped in IP layer encapsulation 3GPP core net IP address allocated, through after the encapsulation of Ya interface user plane protocol layer, is transmitted to BNG/BRAS again; Undertaken being transferred to X-MAG after the encapsulation of Yb interface user plane protocol by said BNG/BRAS; Said X-MAG carries out decapsulation to said upstream data bag to be handled, and separates encapsulation of Yb interface user plane protocol and the encapsulation of Ya interface user plane protocol, keeps internal layer IP address, is encapsulated into afterwards and issues P-GW in the tunnel;

X-MAG need send user face data, when promptly receiving downlink data from the tunnel of P-GW; For said downlink data, X-MAG separates tunnel encapsulation, keeps internal layer IP address; Through after encapsulation of Yb interface user plane protocol and the encapsulation of Ya interface user plane protocol, be transferred to BNG/BRAS then; Said BNG/BRAS is transmitted to UE with packet after separating the encapsulation of Yb interface user plane protocol; After said UE receives said downlink data, carry out decapsulation and handle, separate the encapsulation of Ya interface user plane protocol, be handed down to the IP layer of UE side afterwards, carry out subsequent treatment.

Said fixed network is the fixed network of bridge mode.

A kind of converging fixed network and mobile network's method; Comprise: X-MAG handles the control signaling of UE access to mobile network; And route UE sends out outside the mobile network or the data of reception; Said X-MAG is connected between BNG/BRAS and mobile network's the P-GW of fixed network, between UE and the said BNG/BRAS Ya interface is set, and between said BNG/BRAS and the said X-MAG Yb interface is set.

The chain of command protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects BNG/BRAS, being carried on the IP layer is UDP layer, Yb chain of command protocol layer; Accordingly, in the chain of command protocol stack on the Yb interface of said BNG/BRAS, UDP layer, Yb chain of command protocol layer are set on the IP layer; In the chain of command protocol stack of the Ya interface of said UE, on Ethernet/802.11 serial protocols layer, directly carry Ya chain of command agreement; Accordingly, in the chain of command protocol stack on the Ya interface of said BNG/BRAS, on the Ethernet layer, directly carry Ya chain of command agreement; The chain of command protocol stack of said P-GW is identical with the chain of command protocol stack of the side of said X-MAG connection P-GW.

The user face protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects BNG/BRAS, being carried on the IP layer is UDP layer, Yb user plane protocol layer; Accordingly, in the user face protocol stack on the Yb interface of said BNG/BRAS, UDP layer, Yb user plane protocol layer are set on the IP layer; In the user face protocol stack of the Ya interface of said UE, on Ethernet/802.11 serial protocols layer, carry Ya user plane protocol layer, carry the IP layer on the said Ya user plane protocol layer; Accordingly, in the user face protocol stack on the Ya interface of said BNG/BRAS, on the Ethernet layer, directly carry the Ya user plane protocol; The user face protocol stack of said P-GW is to carry the IP layer again in the superiors of the user face protocol stack of the side of said X-MAG connection P-GW.

Said fixed network is the fixed network of bridge mode.

A kind of converging fixed network and mobile network's method; Comprise: X-MAG handles the control signaling of UE access to mobile network; And route UE sends out outside the mobile network or the data of reception; Said X-MAG is connected between BNG/BRAS and mobile network's the P-GW of fixed network, and said UE and said X-MAG go up and support to use the L2TP agreement to carry the PPP signaling.

The chain of command protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects UE, being carried on the IP layer is UDP layer, L2TP layer, PPP layer; Corresponding, in the protocol stack of UE, UDP layer, L2TP layer and PPP layer are set on the IP layer, control the mutual of signaling to realize the PPP between UE and the X-MAG.

When UE need send the chain of command signaling, said UE created or seeks correct L2TP Tunnel, and the PPP signaling is encapsulated in the L2TP signaling sent to X-MAG; After said X-MAG receives the L2TP signaling from said UE, the PPP signaling in this signaling is taken out, and operate accordingly according to its content;

When X-MAG need send the chain of command signaling, said X-MAG was encapsulated in the PPP signaling in the L2TP signaling, and sent to UE through correct L2TP Tunnel; After UE receives the L2TP signaling from X-MAG, need therefrom take out the PPP signaling, and operate accordingly according to the PPP signaling of receiving.

The user face protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects UE, being carried on the IP layer is UDP layer, L2TP layer and PPP association layer; In the user face protocol stack of UE, UDP layer, L2TP layer and ppp protocol layer are set on the IP layer, on the PPP layer, carry the IP layer; The user face protocol stack of said P-GW is to carry the IP layer again in the superiors of the user face protocol stack of the side of said X-MAG connection P-GW.

When UE need send user face data, upstream data after PPP layer and the two-layer encapsulation of L2TP layer, sent to X-MAG after wrapping in IP layer encapsulation 3GPP core net IP address allocated; X-MAG carries out decapsulation to said upstream data bag to be handled, and separates L2TP and PPP encapsulation, keeps internal layer IP address, is encapsulated into afterwards and issues P-GW in the tunnel;

X-MAG need send user face data, when promptly receiving downlink data from the tunnel of P-GW, for said downlink data, X-MAG separates tunnel encapsulation, keeps internal layer IP address, advanced the two-layer encapsulation of PPP and L2TP then after, send to UE; After UE receives said downlink data, carry out decapsulation and handle, separate L2TP, PPP encapsulation, be handed down to the IP layer of UE side afterwards, carry out subsequent treatment.

Said fixed network is the fixed network of route pattern.

Converging fixed network of the present invention and mobile network's system and method; Fixed network to bridge mode; Be provided for realizing the mobile anchor point gateway X-MAG of the non-3GPP access of trusted, be connected between fixed network and the mobile network, the Ya interface is set between UE and BNG/BRAS; The Yb interface is set between BNG/BRAS and X-MAG, makes the UE can be through X-MAG via the fixed network of bridge mode, with the EPS of the non-3GPP IP of trusted access way access to mobile network.To the fixed network of route pattern,, on terminal and X-MAG, support to use the L2TP agreement to carry the PPP signaling based on existing framework (like Fig. 3, shown in Figure 4).Through the present invention, UE can realize that the non-3GPP of trusted inserts with the mode of simple possible, promptly can realize fixed network and mobile network's fusion through the fixed network access to mobile network of bridge mode or route pattern.

Description of drawings

Fig. 1 is the EPS configuration diagram;

Fig. 2 is the composition configuration diagram of existing fixed network;

Fig. 3 is a kind of network architecture sketch map that UE passes through the fixed network access to mobile network of route pattern in the prior art;

Fig. 4 is the another kind of network architecture sketch map that UE passes through the fixed network access to mobile network of route pattern in the prior art;

Fig. 5 is the chain of command protocol stack sketch map of UE of the present invention through X-MAG and related network elements thereof under the network architecture of the fixed network access to mobile network of bridge mode;

Fig. 6 is the user face protocol stack sketch map of UE of the present invention through X-MAG and related network elements thereof under the network architecture of the fixed network access to mobile network of bridge mode;

Fig. 7 is chain of command protocol stack one sketch map of UE of the present invention through X-MAG and related network elements thereof under the network architecture of the fixed network access to mobile network of route pattern;

Fig. 8 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 1;

Fig. 9 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 2;

Figure 10 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 3;

Figure 11 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 4;

Figure 12 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 5;

Figure 13 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 6;

The realization flow sketch map that Figure 14 inserts/adheres to through UE under the network architecture of the fixed network access to mobile network of bridge mode for UE in the embodiment of the invention 7;

Figure 15 is the realization flow sketch map of UE off-line/attachment removal under the network architecture of the fixed network access to mobile network of UE through bridge mode in the embodiment of the invention 8;

Figure 16 is the realization flow sketch map that UE switches to fixed network from 3GPP IP Access Network through UE under the network architecture of the fixed network access to mobile network of bridge mode in the embodiment of the invention 9;

Figure 17 is that UE connects the realization flow sketch map of setting up through setting up additional PDN under the network architecture of the fixed network access to mobile network of bridge mode in the embodiment of the invention 10;

The realization flow sketch map that Figure 18 inserts/adheres to through UE under the network architecture of the fixed network access to mobile network of route pattern for UE in the embodiment of the invention 11;

Figure 19 is the realization flow sketch map of UE off-line/attachment removal under the network architecture of the fixed network access to mobile network of UE through route pattern in the embodiment of the invention 12;

Figure 20 is the realization flow sketch map that UE switches to fixed network from 3GPP IP Access Network through UE under the network architecture of the fixed network access to mobile network of route pattern in the embodiment of the invention 13;

Figure 21 is that UE connects the realization flow sketch map of setting up through setting up additional PDN under the network architecture of the fixed network access to mobile network of route pattern in the embodiment of the invention 14;

Figure 22 is chain of command protocol stack two sketch mapes of UE of the present invention through X-MAG and related network elements thereof under the network architecture of the fixed network access to mobile network of route pattern;

Figure 23 a is chain of command protocol stack three sketch mapes of UE of the present invention through X-MAG and related network elements thereof under the network architecture of the fixed network access to mobile network of route pattern;

Figure 23 b is user face protocol stack three sketch mapes of UE of the present invention through X-MAG and related network elements thereof under the network architecture of the fixed network access to mobile network of route pattern;

Figure 24 is chain of command protocol stack four sketch mapes of UE of the present invention through X-MAG and related network elements thereof under the network architecture of the fixed network access to mobile network of route pattern.

Embodiment

Basic thought of the present invention is: to the fixed network of bridge mode; Be provided for realizing the mobile anchor point gateway X-MAG of the non-3GPP access of trusted; Be connected between fixed network and the mobile network; The Ya interface is set between UE and BNG/BRAS, the Yb interface is set between BNG/BRAS and X-MAG, make the UE can be through X-MAG via the fixed network of bridge mode, with the EPS of the non-3GPP IP of trusted access way access to mobile network.To the fixed network of route pattern,, on terminal and X-MAG, support to use the L2TP agreement to carry the PPP signaling based on existing framework (like Fig. 3, shown in Figure 4).

Be convenient each interface of describing, with two end points network elements of each interface title as each interface, for example: the interface between BNG/BRAS and the BBF AAA can be called (BNG/BRAS-BBFAAA) interface among this paper; Interface between BNG/BRAS and the BPCF can be called (BNG/BRAS-BPCF) interface, and the rest may be inferred.

Fixed network to bridge mode; The present invention proposes a kind of converging fixed network and mobile network's system, this converging fixed network and mobile network's system comprises: fixed network, mobile network, mobile anchor point gateway (X-MAG) and UE, and said X-MAG is connected between fixed network and the mobile network; Be used to realize that the non-3GPP of trusted inserts; The Ya interface is set between the BNG/BRAS of UE and fixed network, the Yb interface is set between said BNG/BRAS and the X-MAG, make the UE can be through X-MAG via the fixed network of bridge mode, with the EPS of the non-3GPP IP of trusted access way access to mobile network; And; Said X-MAG is used to handle the control signaling of UE access to mobile network, and the route UE data outside the mobile network, sending out or receive.

Concrete, said X-MAG is connected between BNG/BRAS and mobile network's the P-GW of fixed network, is provided with Ya and Yb interface; And said UE has the function of supporting the Ya interface, between UE and the BNG/BRAS, through the intercommunication of Ya interface, passes through the intercommunication of Yb interface between BNG/BRAS and the X-MAG; Said X-MAG is used to handle the control signaling of UE access to mobile network, and route UE sends out outside the mobile network or the data of reception.Based on set X-MAG network element, network system of the present invention supports that the user inserts/adheres to, many PDN connect foundation, user's off-line/attachment removal and the handover operation of user between 3GPP Access Network and fixed network.

Be the signaling between realization X-MAG and the UE and the transmission of data, the protocol stack of each network element in the system need be set.On Ya, Yb interface, chain of command agreement and user plane protocol are set respectively, this agreement can adopt multiple existing protocol, and the present invention is the setting that example is explained protocol stack to adopt ppp protocol.Because PPP is a point-to-point protocol, when having BNG/BRAS between UE and the X-MAG, the PPP signaling can not be directly mutual between UE and X-MAG, and for addressing this problem, we use L2TP to carry the PPP signaling.In native system; The protocol stack of UE, RG, BNG/BRAS, X-MAG and P-GW is provided with respectively like Fig. 5 and shown in Figure 6; Wherein, Fig. 5 is the chain of command protocol stack sketch map of UE of the present invention through X-MAG and related network elements thereof under the network architecture of the fixed network access to mobile network of bridge mode, and Fig. 6 is the user face protocol stack sketch map of UE of the present invention through X-MAG and related network elements thereof under the network architecture of the fixed network access to mobile network of bridge mode.Concrete: as shown in Figure 5, the chain of command protocol stack of X-MAG comprises L1/L2 (Layer 1/Layer 2) layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer, that is to say that it is mutual on the IP layer, to pass through PMIPv6 between X-MAG and the P-GW; A side that connects BNG/BRAS, being carried on the IP layer is UDP layer, Yb chain of command protocol layer (like L2TP layer, PPP layer).Corresponding, in the protocol stack on the Yb of BNG/BRAS side interface, UDP layer, Yb chain of command protocol layer (like L2TP layer and PPP layer) are set on the IP layer, to realize transmitting the control signaling (like PPP) between UE and the X-MAG.In the chain of command protocol stack of the Ya interface of UE, on Ethernet/802.11 serial protocols layer, directly carry Ya chain of command agreement (like ppp protocol).Corresponding, in the chain of command protocol stack on the Ya of BNG/BRAS side interface, on the Ethernet layer, directly carry Ya chain of command agreement (like ppp protocol); The chain of command protocol stack of said P-GW is identical with the chain of command protocol stack of the side of said X-MAG connection P-GW.

For the chain of command transmission, UE sends the chain of command signaling and gives BNG/BRAS; After BNG/BRAS receives the chain of command signaling from UE, can create or seek correct tunnel, and be responsible for the PPP signaling is encapsulated in the tunnel, be transmitted to X-MAG for the user; After X-MAG receives the signaling from BNG/BRAS, need the chain of command signaling from UE in this signaling is taken out, and operate (like authentication, set up PMIPv6 bind etc.) according to its content.When X-MAG need send the chain of command signaling (bind like authorizing procedure, PMIPv6 need in the flow process such as flow process and UE when carrying out Signalling exchange), X-MAG can be encapsulated in the chain of command signaling in the tunnel, and sends to BNG/BRAS through correct tunnel; After BNG/BRAS receives the signaling from said X-MAG, take out chain of command signaling wherein, and be transmitted to UE; UE operates according to the chain of command signaling of receiving accordingly.

Concrete, when adopting ppp protocol, for the chain of command transmission, UE sends the PPP signaling and gives BNG/BRAS; After BNG/BRAS receives the PPP chain of command signaling from UE, need create or seek correct L2TP Tunnel, and be responsible for the PPP signaling is encapsulated in the L2TP signaling, be transmitted to X-MAG for the user; After X-MAG receives the L2TP signaling from BNG/BRAS, need the PPP signaling in this signaling is taken out, and operate (like authentication, set up PMIPv6 bind etc.) according to its content.When X-MAG need send the chain of command signaling (bind like authorizing procedure, PMIPv6 need in the flow process such as flow process and UE when carrying out Signalling exchange), X-MAG is encapsulated in the PPP signaling in the L2TP signaling, and sends to BNG/BRAS through correct L2TP Tunnel; After BNG/BRAS receives, take out PPP signaling wherein, and be transmitted to UE; UE operates according to the PPP signaling of receiving accordingly.

Shown in Figure 6 is the user face protocol stack of X-MAG and related network elements thereof, as shown in Figure 6, and the user face protocol stack of each network element and chain of command protocol stack are basic identical, has just carried one deck IP layer again for the UE and the P-GW the superiors.Concrete, the user face protocol stack of X-MAG comprises L1/L2 layer, IP layer at least, the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects BNG/BRAS, being carried on the IP layer is UDP layer, Yb user plane protocol layer; Accordingly, in the protocol stack on the Yb interface of BNG/BRAS, UDP layer, Yb chain of command protocol layer are set on the IP layer; In the user face protocol stack of the Ya interface of said UE, on Ethernet/802.11 serial protocols layer, carry Ya user plane protocol layer, carry the IP layer on the said Ya user plane protocol layer; Accordingly, in the user face protocol stack on the Ya interface of BNG/BRAS, on the Ethernet layer, directly carry the Ya user plane protocol; The chain of command protocol stack of P-GW is to carry the IP layer again in the superiors of the user face protocol stack of the side of said X-MAG connection P-GW.

For the user plane transmission, in the UE side, upstream data after the encapsulation of Ya interface user plane protocol layer, is transmitted to BNG/BRAS after wrapping in IP layer encapsulation 3GPP core net IP address allocated; Undertaken being transferred to X-MAG after the encapsulation of Yb interface user plane protocol by BNG/BRAS again; X-MAG carries out decapsulation and handles the upstream data bag from UE, separates encapsulation of Yb interface user plane protocol and the encapsulation of Ya interface user plane protocol, keeps internal layer IP address, is encapsulated into afterwards and issues P-GW in the tunnel.For the downlink data from the tunnel of P-GW, X-MAG separates tunnel encapsulation, keeps internal layer IP address, after encapsulating through encapsulation of Yb interface user plane protocol and Ya interface user plane protocol then, is transferred to BNG/BRAS; BNG/BRAS is transmitted to UE with packet after separating the encapsulation of Yb interface user plane protocol; Behind the downlink data that UE receives, carry out decapsulation and handle, separate the encapsulation of Ya interface user plane protocol, be handed down to the IP layer of UE side afterwards, carry out subsequent treatment from X-MAG.

Concrete, when adopting ppp protocol, for the user plane transmission, in the UE side, upstream data after the encapsulation of PPP layer, is transmitted to BNG/BRAS after wrapping in IP layer encapsulation 3GPP core net IP address allocated; Undertaken being transferred to X-MAG after the L2TP encapsulation by BNG/BRAS again; X-MAG carries out decapsulation and handles the upstream data bag from UE, separates L2TP and PPP encapsulation, keeps internal layer IP address, is encapsulated into afterwards and issues P-GW in the tunnel.For the downlink data from the tunnel of P-GW, X-MAG separates tunnel encapsulation, keeps internal layer IP address, advanced the two-layer encapsulation of PPP and L2TP then after, be transferred to BNG/BRAS; BNG/BRAS is transmitted to UE with packet after separating the L2TP encapsulation; Behind the downlink data that UE receives, carry out decapsulation and handle, separate the PPP encapsulation, be handed down to the IP layer of UE side afterwards, carry out subsequent treatment from X-MAG.

Based on the setting of UE, BNG/BRAS and X-MAG chain of command and user face protocol stack, the X-MAG support is connected with UE, P-GW, BNG/BRAS, and supports the MAG function in the PMIPv6 agreement to realize packet routing and transfer functions;

X-MAG also supports L2TP agreement and ppp protocol, realizes user's authentication, packet route and forwarding;

X-MAG can also receive triggering signaling/access demand signalling that UE sends, for the user sets up the corresponding relation between L2TP Tunnel, PPP session and the PMIPv6 tunnel;

When X-MAG receives the triggering signaling that UE sends/access demand signalling, can resolve the parameter of carrying in the received order, can also send lifetime zero setting (PBU) message to P-GW, carry in the PBU message all/part inserts the parameter in the demand signalling; Accordingly, UE sends to triggering signaling/access demand signalling of X-MAG, portability or do not carry UE in IP address that fixed network is obtained, parameter such as terminal iidentification, Access Network sign; UE also receives and inserts request-reply message;

X-MAG can also receive the off-line request message that UE sends, and resolves the parameter of carrying in the message, also sends PBU message to P-GW, carries all/partly insert the parameter in the request message in the PBU message; Accordingly, UE sends the off-line request message to X-MAG, parameters such as portability terminal iidentification, Access Network sign, and UE also receives off-line request-reply message;

X-MAG can also receive the binding that P-GW sends and remove indication (BRI, Binding RevocationIndication) message, and resolves the parameter of carrying in the message, sends corresponding disconnection connection request to UE.

In addition, X-MAG can also realize the P-GW selection function; X-MAG also is responsible for the address and transmits and transmit in the IPv4 address of UE and IPv6 address prefix assigning process;

X-MAG can directly be connected, perhaps be connected with 3GPP AAA/3GPP AAA Proxy as the agency through the BBFAAA servers/proxies with 3GPP AAA/3GPP AAA agency (Proxy); Realization is based on the access authentication of user of 3GPP; And as authenticating party; Accordingly, UE supports the access authentication of user based on 3GPP.Concrete X-MAG acts on behalf of with 3GPP AAA/3GPP AAA or being connected of BBF aaa server/agency, can adopt with connection network element corresponding protocols stack get final product, how protocol stack is set to prior art.

Based on chain of command protocol stack and user face protocol stack setting, the Ya interface is supported ppp protocol; Support L2TP protocol stack and ppp protocol stack on the Yb interface; Support the encapsulation/decapsulation of packet; Support to insert the transmission of signalings such as request signaling, off-line request signaling.Wherein, said support encapsulation is meant: for uplink data messages, UE is with 3GPP core net IP address allocated encapsulation of data message, again fixed network IP address allocated on skin encapsulates; Behind the data arrives X-MAG, X-MAG peels off outermost layer IP address, is encapsulated in the PMIPv6 tunnel between X-MAG and the P-GW again, sends to P-GW; Said support decapsulation is meant: for downlink data message; Behind P-GW arrival X-MAG, after X-MAG removes the PMIP tunnel head of these data, at the local ip address of the outer encapsulation of data message fixed network distribution; And route is given UE; After UE receives this data message, peel off outermost layer and time outer field IP address successively, obtain payload.

For the upstream data bag, UE uses 3GPP core net IP address allocated encapsulation of data message, again through the encapsulation of PPP layer; Behind the data arrives BNG/BRAS, BNG/BRAS carries out the L2TP encapsulation again; Behind the data arrives X-MAG, X-MAG separates L2TP and PPP encapsulation, keeps internal layer IP address, is encapsulated into afterwards in the PMIPv6 tunnel between X-MAG and the P-GW and issues P-GW.For downlink data, X-MAG separates the PMIP tunnel head of packet, keeps internal layer IP address, passes through the two-layer encapsulation of PPP and L2TP then; Behind the data arrives BNG/BRAS, BNG/BRAS is transmitted to UE with packet after separating the L2TP encapsulation; After UE receives this data message, separate the PPP encapsulation, peel off the IP address, obtain payload.

Need to prove: alleged X-MAG, Ya interface, Yb interface among this paper; Just give the particular gateway among the present invention, a kind of title call that interface proposes for convenience; In the practical application, can adopt any other title call, as long as corresponding function is identical.

On concrete the realization, X-MAG can adopt server to realize, also can on existing mobile anchor point gateway basis, increase function recited above etc.

In practical application, said mobile network can be EPS, and comprises roaming scence and non-roaming scene; Under non-roaming scene, said mobile network is called local network; Under roaming scence, said mobile network is divided into home network and visited network; Accordingly, X-MAG is connected with the mobile network with fixed network, and the network integration framework of formation has different ways, is applicable to non-roaming scene and roaming scence respectively.

Corresponding above-mentioned converging fixed network (bridge mode) and mobile network's system; The present invention also proposes a kind of converging fixed network and mobile network's method; This method comprises: X-MAG handles the control signaling of UE access to mobile network; And the route UE data outside the mobile network, sending out or receive, said fixed network is the fixed network of bridge mode, said X-MAG is connected between BNG/BRAS and mobile network's the P-GW of fixed network; Between UE and the said BNG/BRAS Ya interface is set, between said BNG/BRAS and the said X-MAG Yb interface is set.

When UE need send user face data, upstream data wrapped in IP layer encapsulation 3GPP core net IP address allocated, through after the encapsulation of Ya interface user plane protocol layer, is transmitted to BNG/BRAS again; Undertaken being transferred to X-MAG after the encapsulation of Yb interface user plane protocol by said BNG/BRAS; Said X-MAG carries out decapsulation to the upstream data bag from UE to be handled, and separates encapsulation of Yb interface user plane protocol and the encapsulation of Ya interface user plane protocol, keeps internal layer IP address, is encapsulated into afterwards and issues P-GW in the tunnel;

X-MAG need send user face data, when promptly receiving downlink data from the tunnel of P-GW; Downlink data for said tunnel from P-GW; X-MAG separates tunnel encapsulation; Keep internal layer IP address, through after encapsulation of Yb interface user plane protocol and the encapsulation of Ya interface user plane protocol, be transferred to BNG/BRAS then; Said BNG/BRAS is transmitted to UE with packet after separating the encapsulation of Yb interface user plane protocol; Behind the downlink data that said UE receives, carry out decapsulation and handle, separate the encapsulation of Ya interface user plane protocol, be handed down to the IP layer of UE side afterwards, carry out subsequent treatment from X-MAG.

Fixed network to route pattern; For solve the PPP signaling can not be between UE and X-MAG direct mutual problem; A kind of converging fixed network of the present invention (route pattern) and mobile network's method; Make UE under the framework that Fig. 3, Fig. 4 proposed, can realize that the non-3GPP of trusted inserts with the mode of simple possible.Its basic thought is: X-MAG handles the control signaling of UE access to mobile network; And route UE sends out outside the mobile network or the data of reception; Said X-MAG is connected between BNG/BRAS and mobile network's the P-GW of fixed network, and said UE and said X-MAG go up and support to use the L2TP agreement to carry the PPP signaling, and Fig. 7 passes through chain of command protocol stack one sketch map of X-MAG under the network architecture of fixed network access to mobile network of route pattern and related network elements thereof for UE of the present invention; As shown in Figure 7

The chain of command protocol stack of X-MAG comprises L1/L2 (Layer 1/Layer 2) layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer, that is to say that it is mutual on the IP layer, to pass through PMIPv6 between X-MAG and the P-GW; A side that connects UE, being carried on the IP layer is UDP layer, L2TP layer, PPP layer.Corresponding, in the protocol stack of UE side, UDP layer, L2TP layer and PPP layer are set on the IP layer, control the mutual of signaling to realize the PPP between UE and the X-MAG.

For chain of command transmission, UE need create or seek correct L2TP Tunnel for the user, and the PPP signaling is encapsulated in the L2TP signaling sends to X-MAG; After X-MAG receives the L2TP signaling from UE, need the PPP signaling in this signaling is taken out, and operate (, set up PMIPv6 and bind etc.) like, authentication according to its content.When X-MAG need send the chain of command signaling (as, when needs and UE carry out Signalling exchange in the flow processs such as authorizing procedure, PMIPv6 binding flow process), X-MAG is encapsulated in the PPP signaling in the L2TP signaling, and sends to UE through correct L2TP Tunnel; After UE receives the L2TP signaling from X-MAG, need therefrom take out the PPP signaling, and operate accordingly according to the PPP signaling of receiving.

The user face protocol stack of X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects UE, being carried on the IP layer is UDP layer, L2TP layer and PPP association layer; In the user face protocol stack of UE, UDP layer, L2TP layer and ppp protocol layer are set on the IP layer, on the PPP layer, carry the IP layer; The user face protocol stack of said P-GW is to carry the IP layer again in the superiors of the user face protocol stack of the side of said X-MAG connection P-GW.

For the user plane transmission, in the UE side, upstream data after PPP layer and the two-layer encapsulation of L2TP layer, sends to X-MAG after wrapping in IP layer encapsulation 3GPP core net IP address allocated; X-MAG carries out decapsulation and handles the upstream data bag from UE, separates L2TP and PPP encapsulation, keeps internal layer IP address, is encapsulated into afterwards and issues P-GW in the tunnel.For the downlink data from the tunnel of P-GW, X-MAG separates tunnel encapsulation, keeps internal layer IP address, advanced the two-layer encapsulation of PPP and L2TP then after, send to UE; Behind the downlink data that UE receives, carry out decapsulation and handle, separate L2TP, PPP encapsulation, be handed down to the IP layer of UE side afterwards, carry out subsequent treatment from X-MAG.

Based on Fig. 3, Fig. 4 network architecture; Scene for the UE access to mobile network; According to the operation difference of UE to different flow processs should be arranged, the flow process of switching to fixed network from 3GPP IP Access Network like: UE access/attachment flow, UE off-line/attachment removal flow process, UE and set up flow process that additional PDN connects etc.To combine Figure 18 to Figure 21 difference to introduce the flow process that UE access/attachment flow, UE off-line/attachment removal flow process, UE when adopting the inventive method connect to the flow process and the additional PDN of foundation of fixed network switching from 3GPP IP Access Network in detail below, said each handling process all is applicable to the various network architectures of roaming, non-roaming scene.Wherein, the BBF AAA among the figure refers to BBF aaa server/agency.

Below in conjunction with specific embodiment the enforcement of technical scheme of the present invention is done further to describe in detail.

Embodiment 1

Fig. 8 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 1; As shown in Figure 8; In the present embodiment; UE is linked into the EPS core net through the fixed network of bridge mode, and wherein fixed network inserts as the non-3GPP of the trusted of EPS, and the network architecture shown in Figure 8 is the network architecture of non-roaming scene.In the present embodiment, X-MAG links to each other with 3GPPAAA through BBF aaa server/agency (Server/Proxy), realizes the access authentication of user based on 3GPPAAA.

In the present embodiment; X-MAG is arranged between mobile network's the BNG/BRAS of P-GW and fixed network, supports the MAG function in the PMIPv6 agreement, supports L2TP agreement and ppp protocol; And be connected with BNG/BRAS through the Yb interface, BNG/BRAS is connected with UE through the Ya interface; The chain of command protocol stack of X-MAG, BNG/BRAS and UE and User Agreement stack are provided with respectively like Fig. 5 and shown in Figure 6; On the IP layer of the chain of command protocol stack of Yb interface and User Agreement stack, be respectively arranged with L2TP layer and PPP layer; On the Ethernet layer of the chain of command protocol stack of Ya interface and user face protocol stack, be respectively arranged with the PPP layer, be respectively applied for the transmission that realizes control signaling and user data between X-MAG and the UE.

In the practical application, when UE sent out data outside via the mobile network, UE sent the data to BNG/BRAS, is transmitted to X-MAG by BNG/NRAS through L2TP Tunnel, sends to mobile network's side via X-MAG; Perhaps, when UE receives the data from mobile network's side, X-MAG will be transmitted to BNG/BRAS through L2TP Tunnel from the data of mobile network's side, and BNG/BRAS is transmitted to UE again.

When UE and the mutual control information of mobile network, the control signaling that UE will carry control information sends to X-MAG through BNG/BRAS, triggers X-MAG and initiates the associative operation in the mobile network; Perhaps, after X-MAG receives the signaling triggering from mobile network's side network element or self incident,, send descending control signaling and give UE through BNG/BRAS.

Concrete; Said UE sends out data outward via the mobile network: UE encapsulates as purpose IP address as internal layer source IP address, Correspondent Node IP address with 3GPP core net IP address allocated earlier upstream data; Carry out the PPP encapsulation again, be transmitted to BNG/BRAS afterwards; BNG/BRAS carries out being transmitted to X-MAG after the L2TP encapsulation to the upstream data bag of receiving; The upstream data bag from UE of X-MAG to receiving separated L2TP and PPP encapsulation, keeps internal layer source IP address and purpose IP address, is encapsulated into afterwards in the PMIPv6 tunnel and sends to P-GW.

UE accepts from the data of mobile network's side: X-MAG separates the PMIPv6 encapsulation to downlink data, keeps internal layer source IP address and purpose IP address, advanced the two-layer encapsulation of PPP and L2TP then after, be transmitted to BNG/BRAS; After BNG/BRAS receives downlink data packet, go L2TP encapsulation after, packet is transmitted to UE; The downlink data from X-MAG of UE to receiving separated the PPP encapsulation, peels off internal layer IP address, obtains payload.

The control signaling that UE will carry control information sends to X-MAG through BNG/BRAS, and the associative operation that triggers in the X-MAG initiation mobile network is: UE sends the PPP signaling and gives BNG/BRAS; After BNG/BRAS receives the PPP chain of command signaling from UE, need create or seek correct L2TP Tunnel, and be responsible for the PPP signaling is encapsulated in the L2TP signaling, be transmitted to X-MAG for the user; After X-MAG receives the L2TP signaling from BNG/BRAS, need the PPP signaling in this signaling is taken out, and operate (, set up PMIPv6 and bind etc.) like, authentication according to its content.

After X-MAG receives the signaling triggering from mobile network's side network element or self incident; Sending descending control signaling to UE is: X-MAG receives from the signaling triggering of the P-GW of mobile network's side and/or 3GPP AAA or the signaling of self incident and triggers; When needing to send the chain of command signaling (as; When needs and UE carry out Signalling exchange in the flow processs such as authorizing procedure, PMIPv6 binding flow process), X-MAG is encapsulated in the PPP signaling in the L2TP signaling, and sends to BNG/BRAS through correct L2TP Tunnel; After BNG/BRAS receives, take out PPP signaling wherein, and be transmitted to UE; UE operates according to the PPP signaling of receiving accordingly.

Wherein, PPP LCP configuring request or the PPP NCP configuring request that can send to X-MAG for: UE of said upstream control signaling or PPP LCP stops request or PPP NCP stops request or the like.；

Said descending control signaling can be replied or PPP LCP configuration is replied or PPP LCP stops replying or PPP NCP stops replying or the like for the PPP NCP configuration that: X-MAG sends to UE.

Embodiment 2

Fig. 9 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 2; As shown in Figure 9; In the present embodiment; UE is linked into the EPS core net through the fixed network of bridge mode, and wherein fixed network inserts as the non-3GPP of the trusted of EPS, and the network architecture shown in Figure 9 is the network architecture of non-roaming scene.

Different with embodiment 1 is: in the present embodiment, X-MAG does not link to each other with 3GPP AAA through BBF aaa server/agency, but directly links to each other with 3GPP AAA, and realization is based on the access authentication of user of 3GPP AAA.In addition other aspects of present embodiment (transmission course of the mutual and uplink and downlink data of protocol stack setting, interface function, control signaling etc.) are all identical with embodiment 1 described function, principle, do not describe in detail at this.

Embodiment 3

Figure 10 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 3; Shown in figure 10; In the present embodiment, UE is linked into the EPS core net through the fixed network of bridge mode, and wherein fixed network inserts as the non-3GPP of the trusted of EPS.The network architecture shown in Figure 10 is the network architecture of roaming scence, local route; Comprise local public land mobile network (homePublic Land Mobile Network; HPLMN) and Visited PLMN (vPLMN); BPCF links to each other with hPCRF through vPCRF, and vPCRF links to each other through roaming interface S9 interface with hPCRF; The BBFAAA servers/proxies links to each other with 3GPP AAA and HSS through 3GPP AAA agency; Accordingly, in the present embodiment, X-MAG links to each other with 3GPP AAA agency, 3GPP AAA through BBF aaa server/agency, realizes the access authentication of user based on 3GPPAAA.

In the present embodiment, P-GW selects to be placed in the home network, and X-MAG links to each other with P-GW through the roaming interface, and here, the roaming interface is the S2a interface.

The various aspects of present embodiment (transmission course of the mutual and uplink and downlink data of protocol stack setting, interface function, control signaling etc.) are all identical with embodiment 1 described function, principle, do not describe in detail at this.

Embodiment 4

Figure 11 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 4; Shown in figure 11; In the present embodiment, UE is linked into the EPS core net through the fixed network of bridge mode, and wherein fixed network inserts as the non-3GPP of the trusted of EPS.The network architecture shown in Figure 11 is the network architecture of roaming scence, local route, comprises hPLMN and vPLMN, and P-GW selects to be placed in the home network, and X-MAG links to each other with P-GW through roaming interface S2a interface; BPCF links to each other with hPCRF through vPCRF, and vPCRF links to each other through roaming interface S9 interface with hPCRF.

Different with embodiment 3 is: in the present embodiment; X-MAG does not link to each other with 3GPP AAA agency, 3GPP AAA through BBF aaa server/agency; But directly link to each other with 3GPPAAA through 3GPP AAA agency; Realization is based on the access authentication of user of 3GPP AAA, and corresponding, BBF aaa server/agency does not link to each other with 3GPP AAA Proxy.

The various aspects of present embodiment (transmission course of the mutual and uplink and downlink data of protocol stack setting, interface function, control signaling etc.) are all identical with embodiment 2 described functions, principle, do not describe in detail at this.

Embodiment 5

Figure 12 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 5; Shown in figure 12; In the present embodiment, UE is linked into the EPS core net through fixed network, and wherein fixed network inserts as the non-3GPP of the trusted of EPS.The network architecture shown in Figure 12 and embodiment three are basic identical, comprise hPLMN and vPLMN, and BPCF links to each other with hPCRF through vPCRF, and vPCRF links to each other through roaming interface S9 interface with hPCRF; BBF aaa server/agency links to each other with 3GPP AAA and HSS through 3GPPAAA Proxy; Accordingly, in the present embodiment, X-MAG links to each other with 3GPP AAA agency, 3GPP AAA through BBF aaa server/agency, realizes the access authentication of user based on 3GPPAAA.

What present embodiment and embodiment 3 were different is: the P-GW in the present embodiment selects to be placed in the visited network, and X-MAG links to each other with P-GW through local interface.

Embodiment 6

Figure 13 is the network architecture sketch map that UE passes through the fixed network access to mobile network of bridge mode in the embodiment of the invention 6; Shown in figure 13; In the present embodiment, UE is linked into the EPS core net through the fixed network of bridge mode, and wherein fixed network inserts as the non-3GPP of the trusted of EPS.The network architecture shown in Figure 13 and embodiment 5 are basic identical, comprise hPLMN and vPLMN, and P-GW selects to be placed in the visited network, and X-MAG links to each other with P-GW through local interface; BPCF links to each other with hPCRF through vPCRF, and vPCRF links to each other through roaming interface S9 interface with hPCRF.

Different with embodiment 5 is: in the present embodiment; X-MAG does not link to each other with 3GPP AAA agency, 3GPP AAA through BBF aaa server/agency; But directly link to each other with 3GPPAAA through 3GPP AAA agency; Realization is based on the access authentication of user of 3GPP AAA, and corresponding, BBF aaa server/agency does not link to each other with 3GPP AAA Proxy.

Based on above-mentioned various network architectures; Scene for the UE access to mobile network; According to the operation difference of UE to different flow processs should be arranged, the flow process of switching to fixed network from 3GPP IP Access Network like: UE access/attachment flow, UE off-line/attachment removal flow process, UE and set up flow process that additional PDN connects etc.Introduce the flow process that UE access/attachment flow, UE off-line/attachment removal flow process, UE switch to fixed network from 3GPP IP Access Network respectively in detail and set up the flow process that additional PDN connects below in conjunction with Figure 14 to Figure 17, said each handling process all is applicable to the various network architectures of roaming, non-roaming scene.Wherein, the BBF AAA among the figure refers to BBF aaa server/agency.

Embodiment 7

The realization flow sketch map that Figure 14 inserts/adheres to through UE under the network architecture of the fixed network access to mobile network of bridge mode for UE in the embodiment of the invention 7, based on the network architecture can be as shown in Fig. 8 to Figure 13 be arbitrary.Concrete, UE access/attachment flow of the present invention may further comprise the steps:

Step 1401:UE sends the ppp link control protocol through the Ya interface to BNG/BRAS, and (LinkControl Protocol, LCP) configuring request are carried out PPP LCP with BNG/BRAS and are consulted.

PPP LCP configuring request in the present embodiment belongs to a kind of access/attach request.

Step 1402:BNG/BRAS initiates access authentication to BBF AAA,, possibly adopt PAP or modes such as CHAP or EAP-AKA to accomplish the access authentication of fixed network to the user here.

Simultaneously, BNG/BRAS need obtain the L2TP attribute of UE in this step, and promptly whether the PPP session of UE terminates in X-MAG, whether need start the foundation of L2TP Tunnel.When the user is 3GPP user, then think PPP termination at X-MAG, need set up the L2TP Tunnel between BNG/BRAS and the X-MAG.

BBF AAA finds that it is 3GPP user, and PPP termination then returns this user's PPP termination and gives BNG/BRAS at X-MAG at X-MAG.Perhaps BNG/BRAS goes up the L2TP attribute of configure user, and no longer need arrive BBF AAA and inquire about this moment.Under this scene, the access authentication of fixed network might not can be accomplished, and perhaps can not start.

Step 1403: after the fixed network access authentication completes successfully in the step 1402; BNG/BRAS initiates the fixed network strategy session to BPCF and sets up request; BNG/BRAS and BPCF set up and apply for/issue the session of dynamic strategy, so that Resource Allocation in Networks and user admission are realized accurately control.

L2TP Tunnel between step 1404:BNG/BRAS initiation and the X-MAG is set up.

Step 1405:BNG/BRAS sends to X-MAG with user's authentication parameter, starts the access authentication of 3GPP.Carry out the access authentication of user's access to mobile network between X-MAG and the 3GPP HSS/AAA alternately.Here, adopt based on the authentication mode of 3GPP and accomplish the access authentication to the user, said authentication mode based on 3GPP can be EAP-AKA.

When the access authentication of fixed network in the step 1402 was not activated, this step was not carried out, and carried out for 1406 steps.

The authentication pattern that BNG/BRAS and UE consult in step 1401, when the authentication pattern of supporting with the mobile network was inequality, this step was carried out failure, carries out for 1406 steps.

Step 1406: the authentication pattern that BNG/BRAS and UE consult in step 1401, inequality with the authentication pattern that the mobile network supports, perhaps when the access authentication of fixed network in the step 1402 was not activated or accomplishes, X-MAG triggered the LCP that initiates again with UE and consults.

Step 1407: the terminal is through carry out the access authentication of user's access to mobile network alternately between X-MAG and the 3GPP HSS/AAA.Here, adopt based on the authentication mode of 3GPP and accomplish the access authentication to the user, said authentication mode based on 3GPP can be EAP-AKA.

Step 1408:UE sends PPP NCP configuring request to X-MAG, carries out PPP NCP with X-MAG and consults.Message is when the BNG/BRAS, and BNG/BRAS on the L2TP Tunnel for UE foundation, is encapsulated in match messages in the L2TP Tunnel with PPP message in the step 1404, is transmitted to X-MAG.

Here, carry mobile network ID, the APN parameters such as (APN) of UE in the said configuring request at least; UE sends in the PPP NCP configuring request of X-MAG, can carry or not carry the IP address ip 1 that UE obtains in fixed network.

After step 1409:X-MAG receives the L2TP message from BNG/BRAS, remove the L2TP encapsulation, obtain the PPP NCP configuring request that UE sends.X-MAG sends PBU message and gives P-GW, the tunnel binding of request and P-GW as the MAG of PMIPv6.After treating that completion is set up in follow-up PMIPv6 tunnel, X-MAG need set up the corresponding relation and the storage in L2TP Tunnel, PPP session and PMIPv6 tunnel.

After step 1410:P-GW receives PBU message, create banding cache inlet (BCE, Binding CacheEntry), and be UE distribution 3GPP core net IP address allocated IP2;

Here, how to set up the IP-CAN session with PCRF be prior art to P-GW; Wherein, PCRF distinguishes v/hPCRF under roaming scence, do not have vPCRF under the non-roaming scene.

Step 1411:P-GW is right to 3GPP HSS/AAA transmission APN/P-GW sign through diameter protocol (Diameter) signaling, the sign of storing this P-GW.

Step 1412:P-GW responds PBA message to X-MAG, and in this PBA message, to carry the 3GPP core net be UE IP address allocated IP2.

Step 1413:X-MAG and UE accomplish PPP NCP and consult, and reply through PPP NCP configuration the IP address ip 2 of distributing to UE is sent to UE.X-MAG is encapsulated in PPP NCP configuration response message in the L2TP Tunnel, sends to BNG/BRAS, and BNG/BRAS removes the L2TP Tunnel encapsulation, takes out PPP message, and is transmitted to UE.

Step 1414: based on the triggering of step 1410 operation, PCRF initiates strategy session to BPCF and sets up request, sets up strategy session;

Here, the strategy session of being set up is similar to the gateway control session that defines among the 3GPP, and through this session, BPCF unifies control point PCRF from strategy and obtains relevant QoS and charging policy;

Wherein, under roaming scence, can be between BPCF and the hPCRF through vPCRF; Under the non-roaming scene, there is not vPCRF.

Step 1415: when step 1403 is not carried out, start the foundation of fixed network strategy session this moment.

Step 1416: accomplish the transmission of data service.

For uplink data messages, UE encapsulates as purpose IP address as internal layer source IP address, Correspondent Node IP address with 3GPP core net IP address allocated earlier upstream data, carries out the PPP encapsulation again, is transmitted to BNG/BRAS afterwards; BNG/BRAS carries out being transmitted to X-MAG after the L2TP encapsulation to the upstream data bag of receiving; The upstream data bag from UE of X-MAG to receiving separated L2TP and PPP encapsulation, keeps internal layer source IP address and purpose IP address, is encapsulated into afterwards in the PMIPv6 tunnel and sends to P-GW;

For downlink data message, X-MAG separates PMIPv6 encapsulation to downlink data, keeps internal layer source IP address and purpose IP address, advanced the two-layer encapsulation of PPP and L2TP then after, be transmitted to BNG/BRAS; After BNG/BRAS receives downlink data packet, go L2TP encapsulation after, packet is transmitted to UE; The downlink data from X-MAG of UE to receiving separated the PPP encapsulation, peels off internal layer IP address, obtains payload.

Embodiment 8

Figure 15 is the realization flow sketch map of UE off-line/attachment removal under the network architecture of the fixed network access to mobile network of UE through bridge mode in the embodiment of the invention 8, based on the network architecture can be as shown in Fig. 8 to Figure 13 be arbitrary.Concrete, UE of the present invention may further comprise the steps from mobile network's off-line/attachment removal flow process:

Step 1501:UE inserts the EPS core net through fixed network, and sets up at least one PDN connection.

Step 1502:UE sends the PPP session and stops request to X-MAG, and request off-line/attachment removal/deletion PDN connects.During message process BNG/BRAS, BNG/BRAS to the L2TP Tunnel of setting up for UE, is encapsulated in match messages in the L2TP Tunnel with PPP message, is transmitted to X-MAG.

Here, said PPP session is LCP or NCP, correspondence, the PPP session stops request and stops request or be PPP NCP termination request for PPP LCP; Generally, UE needs for some reason, possibly initiate off-line/attachment removal or delete the operation that certain PDN connects.

After step 1503:X-MAG receives the L2TP message from BNG/BRAS, remove the L2TP encapsulation, obtain the PPP session termination request that UE sends.X-MAG sends PBU message and gives P-GW as the MAG of PMIPv6, and carries lifetime zero setting indication, and request is removed tunnel binding with P-GW;

Here, if independent PDN connects deletion, can only remove the PMIPv6 tunnel of that PDN connection that will discharge; If off-line/attachment removal then will be removed each PMIPv6 tunnel respectively; Accordingly, after P-GW receives PBU message, can delete tunnel binding context with X-MAG.

IP-CAN session between step 1504:P-GW dismounting and the PCRF.

Step 1505:P-GW is right to 3GPP HSS/AAA transmission APN/P-GW sign through the Diameter signaling, the sign of notice 3GPP HSS/AAA deletion P-GW.

Step 1506:P-GW responds PBA message to X-MAG.

Step 1507:X-MAG returns PPP to UE and stops replying, and notice UE off-line/attachment removal/PDN connects deletion to be accomplished.X-MAG stops response message with PPP and is encapsulated in the L2TP Tunnel, sends to BNG/BRAS, and BNG/BRAS removes the L2TP Tunnel encapsulation, takes out PPP message, and is transmitted to UE.

Here, to stop replying can be that PPP LCP stops replying or PPP NCP stops replying for said PPP; Said notice UE off-line/attachment removal/PDN connects deletion and comprises: notice UE PPP session teardown, PDN connect deletion.

Step 1508: if attachment removal/off-line operation, fixed network also need be accomplished local connect release, local resource release; Connect if only delete certain PDN, then only discharge corresponding resource, the resource that other PDN connect continues to keep.

Embodiment 9

Figure 16 is the realization flow sketch map that UE switches to fixed network from 3GPP IP Access Network under the network architecture of the fixed network access to mobile network of UE through bridge mode in the embodiment of the invention 9, based on the network architecture can be as shown in Fig. 8 to Figure 13 be arbitrary.Said handoff procedure need switch to fixed network again after being meant that UE has inserted/be attached to the EPS core net through fixed network for some reason.Concrete, UE of the present invention may further comprise the steps from the switching flow of 3GPP Access Network to fixed network:

Step 1601:UE accomplishes trusted 3GPP through fixed network and inserts.

Step 1602:UE determines to switch to fixed network for some reason;

Here, said reason can be a 3GPP wireless access signal variation etc.

Step 1603: with step 1401-1415.

Step 1604:P-GW initiates 3GPP access network resource deexcitation flow process.

Here, insert because UE has switched to fixed network, therefore, the related resource of 3GPP Access Network all can perhaps be deleted in deexcitation, and this step is a prior art.

Embodiment 10

Figure 17 sets up additional PDN under the network architecture of the fixed network access to mobile network of UE through bridge mode in the embodiment of the invention 10 to connect the realization flow sketch map of setting up, based on the network architecture can be as shown in Fig. 8 to Figure 13 be arbitrary.Because in EPS, UE can visit a plurality of PDN simultaneously, sets up a plurality of PDN and connects, obtain a plurality of/to the IPv4/IPv6 address, what this flow process was described is exactly after UE adheres to, and sets up the operating process that additional PDN connects.Concrete, the flow process that the present invention sets up additional PDN connection may further comprise the steps:

Step 1701:UE inserts/is attached to the EPS core net by fixed network, and concrete access/attachment flow such as Figure 14 are said.

When step 1702:UE need add the PDN connection, send PPP NCP configuring request, carry out PPP NCP with X-MAG and consult to X-MAG.During message process BNG/BRAS, BNG/BRAS to the L2TP Tunnel of setting up for UE, is encapsulated in match messages in the L2TP Tunnel with PPP message, is transmitted to X-MAG.

Here, carry the parameter such as mobile network ID, APN of UE in the said configuring request at least; UE sends in the PPP NCP configuring request of X-MAG, can carry or not carry the IP address ip 1 that UE obtains in fixed network.

After step 1703:X-MAG receives the L2TP message from BNG/BRAS, remove the L2TP encapsulation, obtain the PPP NCP configuring request that UE sends.X-MAG sends PBU message and gives P-GW, the tunnel binding of request and P-GW as the MAG of PMIPv6.After treating that completion is set up in follow-up PMIPv6 tunnel, X-MAG need set up the corresponding relation and the storage in L2TP Tunnel, PPP session and PMIPv6 tunnel.

After step 1704:P-GW receives PBU message, create BCE, and be UE distribution 3GPP core net IP address allocated IP2;

Step 1705:P-GW is right to 3GPP HSS/AAA transmission APN/P-GW sign through the Diameter signaling, the sign of storing this P-GW.

Step 1706:P-GW responds PBA message to X-MAG, and in this PBA message, to carry the 3GPP core net be UE IP address allocated IP2.

Step 1707:X-MAG and UE accomplish PPP NCP and consult, and reply through PPP NCP configuration the IP address ip 2 of distributing to UE is sent to UE.X-MAG is encapsulated in PPP NCP configuration response message in the L2TP Tunnel, sends to BNG/BRAS, and BNG/BRAS removes the L2TP Tunnel encapsulation, takes out PPP message, and is transmitted to UE.

Step 1708: if the PCC strategy among the PCRF has change; Then PCRF can send to BPCF with the PCC strategy that upgrades through BPCF and the strategy session of having set up between the PCRF; BPCF also can be according to actual conditions to the BNG/BRAS update strategy, and BNG/BRAS can carry out corresponding operation according to updating strategy.

Embodiment 11

The realization flow sketch map that Figure 18 inserts/adheres to through UE under the network architecture of the fixed network access to mobile network of route pattern for UE in the embodiment of the invention 11, based on the network architecture such as Fig. 3, shown in Figure 4.Concrete, UE access/attachment flow of the present invention may further comprise the steps:

Step 1801:RG passes through access authentication according to the existing fixed network authentication mode.RG sets up local the connection with fixed network, and obtains the local ip address of fixed network for its distribution.UE inserts RG, and RG distributes private net address IP1 for it.

Step 1802: receive the local triggering that connects establishment step and/or authentication step; BNG/BRAS initiates the fixed network strategy session to BPCF and sets up request; BNG/BRAS and BPCF set up and apply for/issue the session of dynamic strategy, so that Resource Allocation in Networks and user admission are realized accurately control.

Step 1803:UE initiates L2TP Tunnel through the Y interface to X-MAG and sets up, and sets up the tunnel between UE and the X-MAG.

Step 1804:UE sends PPP LCP configuring request through the Y interface to X-MAG, carries out PPP LCP with X-MAG and consults.On UE sets up match messages in the step 1803 for UE the L2TP Tunnel, and the PPP signaling is encapsulated in the L2TP signaling and sends to X-MAG.After X-MAG receives the L2TP message from BNG/BRAS, remove the L2TP encapsulation, obtain the PPP message that UE sends, and operate accordingly according to PPP information.

Step 1805: the terminal is through carry out the access authentication of user's access to mobile network alternately between X-MAG and the 3GPP HSS/AAA.Here, adopt based on the authentication mode of 3GPP and accomplish the access authentication to the user, said authentication mode based on 3GPP can be EAP-AKA.UE is encapsulated in the PPP signaling in the L2TP signaling and sends to X-MAG.After X-MAG receives the L2TP message from BNG/BRAS, remove the L2TP encapsulation, obtain the PPP message that UE sends, and operate accordingly according to PPP information.

Step 1806:UE sends PPP NCP configuring request to X-MAG, carries out PPP NCP with X-MAG and consults.UE is encapsulated in PPP message in the L2TP Tunnel, is transmitted to X-MAG.

After step 1807:X-MAG receives the L2TP message from UE, remove the L2TP encapsulation, obtain the PPP NCP configuring request that UE sends.X-MAG sends PBU message and gives P-GW, the tunnel binding of request and P-GW as the MAG of PMIPv6.After treating that completion is set up in follow-up PMIPv6 tunnel, X-MAG need set up the corresponding relation and the storage in L2TP Tunnel, PPP session and PMIPv6 tunnel.

After step 1808:P-GW receives PBU message, create banding cache inlet (BCE, Binding CacheEntry), and be UE distribution 3GPP core net IP address allocated IP2;

Step 1809:P-GW is right to 3GPP HSS/AAA transmission APN/P-GW sign through diameter protocol (Diameter) signaling, the sign of storing this P-GW.

Step 1810:P-GW responds PBA message to X-MAG, and in this PBA message, to carry the 3GPP core net be UE IP address allocated IP2.

Step 1811:X-MAG and UE accomplish PPP NCP and consult, and reply through PPP NCP configuration the IP address ip 2 of distributing to UE is sent to UE.X-MAG is encapsulated in PPP NCP configuration response message in the L2TP Tunnel, sends to UE.After UE receives the L2TP message from X-MAG, remove the L2TP encapsulation, obtain PPP message wherein, and do corresponding processing according to message content wherein.

Step 1812: based on the triggering of step 1808 operation, PCRF initiates strategy session to BPCF and sets up request, sets up strategy session;

Step 1813: accomplish the transmission of data service.

For uplink data messages, UE encapsulates as purpose IP address as internal layer source IP address, Correspondent Node IP address with 3GPP core net IP address allocated earlier upstream data, carries out PPP and L2TP encapsulation again, is transmitted to X-MAG afterwards; The upstream data bag from UE of X-MAG to receiving separated L2TP and PPP encapsulation, keeps internal layer source IP address and purpose IP address, is encapsulated into afterwards in the PMIPv6 tunnel and sends to P-GW;

For downlink data message, X-MAG separates PMIPv6 encapsulation to downlink data, keeps internal layer source IP address and purpose IP address, advanced the two-layer encapsulation of PPP and L2TP then after, be transmitted to UE; The downlink data from X-MAG of UE to receiving separated L2TP and PPP encapsulation, peels off internal layer IP address, obtains payload.

Embodiment 12

Figure 19 is the realization flow sketch map of UE off-line/attachment removal under the network architecture of the fixed network access to mobile network of UE through route pattern in the embodiment of the invention 12, based on the network architecture such as Fig. 3, shown in Figure 4.Concrete, UE of the present invention may further comprise the steps from mobile network's off-line/attachment removal flow process:

Step 1901:UE inserts the EPS core net through fixed network, and sets up at least one PDN connection.

Step 1902:UE sends the PPP session and stops request to X-MAG, and request off-line/attachment removal/deletion PDN connects.UE to the L2TP Tunnel of setting up for UE, is encapsulated in match messages in the L2TP Tunnel with PPP message, sends to X-MAG.

After step 1903:X-MAG receives the L2TP message from UE, remove the L2TP encapsulation, obtain the PPP session termination request that UE sends.X-MAG sends PBU message and gives P-GW as the MAG of PMIPv6, and carries lifetime zero setting indication, and request is removed tunnel binding with P-GW;

IP-CAN session between step 1904:P-GW dismounting and the PCRF.

Step 1905:P-GW is right to 3GPP HSS/AAA transmission APN/P-GW sign through the Diameter signaling, the sign of notice 3GPP HSS/AAA deletion P-GW.

Step 1906:P-GW responds PBA message to X-MAG.

Step 1907:X-MAG returns PPP to UE and stops replying, and notice UE off-line/attachment removal/PDN connects deletion to be accomplished.X-MAG stops response message with PPP and is encapsulated in the L2TP Tunnel, sends to UE.After UE receives the L2TP message from X-MAG, remove the L2TP encapsulation, obtain PPP message wherein, and do corresponding processing according to message content wherein.

Initiate the release of L2TP Tunnel between step 1908:UE and the X-MAG.

Step 1909: if attachment removal/off-line operation, fixed network also need be accomplished local connect release, local resource release; Connect if only delete certain PDN, then only discharge corresponding resource, the resource that other PDN connect continues to keep.

Embodiment 13

Figure 20 is the realization flow sketch map that UE switches to fixed network from 3GPP IP Access Network under the network architecture of the fixed network access to mobile network of UE through route pattern in the embodiment of the invention 13, based on the network architecture such as Fig. 3, shown in Figure 4.Said handoff procedure need switch to fixed network again after being meant that UE has inserted/be attached to the EPS core net through fixed network for some reason.Concrete, UE of the present invention may further comprise the steps from the switching flow of 3GPP Access Network to fixed network:

Step 2001:UE accomplishes trusted 3GPP through fixed network and inserts.

Step 2002:UE determines to switch to fixed network for some reason.

Here, said reason can be a 3GPP wireless access signal variation etc.

Step 2003: with step 1801-1812.

Step 2004:P-GW initiates 3GPP access network resource deexcitation flow process.

Embodiment 14

Figure 21 sets up additional PDN under the network architecture of the fixed network access to mobile network of UE through route pattern in the embodiment of the invention 14 to connect the realization flow sketch map of setting up, based on the network architecture such as Fig. 3, shown in Figure 4.Because in EPS, UE can visit a plurality of PDN simultaneously, sets up a plurality of PDN and connects, obtain a plurality of/to the IPv4/IPv6 address, what this flow process was described is exactly after UE adheres to, and sets up the operating process that additional PDN connects.Concrete, the flow process that the present invention sets up additional PDN connection may further comprise the steps:

Step 2101:UE inserts/is attached to the EPS core net by fixed network, and concrete access/attachment flow such as Figure 18 are said.

When step 2102:UE need add the PDN connection, send PPP NCP configuring request, carry out PPP NCP with X-MAG and consult to X-MAG.To the L2TP Tunnel of setting up for UE, and the PPP signaling is encapsulated in the L2TP signaling and sends to X-MAG UE with match messages.

After step 2103:X-MAG receives the L2TP message from BNG/BRAS, remove the L2TP encapsulation, obtain the PPP NCP configuring request that UE sends.X-MAG sends PBU message and gives P-GW, the tunnel binding of request and P-GW as the MAG of PMIPv6.After treating that completion is set up in follow-up PMIPv6 tunnel, X-MAG need set up the corresponding relation and the storage in L2TP Tunnel, PPP session and PMIPv6 tunnel.

After step 2104:P-GW receives PBU message, create BCE, and be UE distribution 3GPP core net IP address allocated IP2;

Step 2105:P-GW is right to 3GPP HSS/AAA transmission APN/P-GW sign through the Diameter signaling, the sign of storing this P-GW.

Step 2106:P-GW responds PBA message to X-MAG, and in this PBA message, to carry the 3GPP core net be UE IP address allocated IP2.

Step 2107:X-MAG and UE accomplish PPP NCP and consult, and reply through PPP NCP configuration the IP address ip 2 of distributing to UE is sent to UE.X-MAG is encapsulated in PPP NCP configuration response message in the L2TP Tunnel, sends to UE.After UE receives the L2TP message from X-MAG, remove the L2TP encapsulation, obtain PPP message wherein, and do corresponding processing according to message content wherein.

Step 2108: if the PCC strategy among the PCRF has change; Then PCRF can send to BPCF with the PCC strategy that upgrades through BPCF and the strategy session of having set up between the PCRF; BPCF also can be according to actual conditions to the BNG/BRAS update strategy, and BNG/BRAS can carry out corresponding operation according to updating strategy.

Need to prove that to the fixed network of route pattern, Fig. 7 is more excellent solution, in addition, also has other solutions, for example Figure 22, Figure 23 a, Figure 23 b, Figure 24 provide other solution.

Shown in figure 22, its basic thought is to support to use the GTP agreement to realize the grouping route of the mutual and data of control signaling between UE and the X-MAG on terminal and the X-MAG.The chain of command protocol stack of X-MAG, UE and related network elements thereof is provided with shown in figure 22 in this method.Concrete:

Shown in figure 22, the chain of command protocol stack of X-MAG comprises L1/L2 (Layer 1/Layer 2) layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer, that is to say that it is mutual on the IP layer, to pass through PMIPv6 between X-MAG and the P-GW; A side that connects UE, being carried on the IP layer is UDP layer, GTP layer.Corresponding, in the protocol stack of UE side, UDP layer, GTP layer are set on the IP layer, control the mutual of signaling to realize the PPP between UE and the X-MAG.

For the chain of command transmission, UE sends the GTP-C signaling and gives X-MAG; After X-MAG receives the GTP signaling from UE, operate (, set up PMIPv6 and bind etc.) like, authentication according to its content.When X-MAG need send the chain of command signaling (as, when needs and UE carry out Signalling exchange in the flow processs such as authorizing procedure, PMIPv6 binding flow process), X-MAG sends the GTP-C signaling and gives UE; After UE receives the GTP signaling from X-MAG, operate accordingly according to the GTP signaling of receiving.

For the user plane transmission, in the UE side, upstream data after the encapsulation of GTP layer, sends to X-MAG after wrapping in IP layer encapsulation 3GPP core net IP address allocated; X-MAG carries out decapsulation and handles the upstream data bag from UE, separates the GTP encapsulation, keeps internal layer IP address, is encapsulated into afterwards and issues P-GW in the tunnel.For the downlink data from the tunnel of P-GW, X-MAG separates tunnel encapsulation, keeps internal layer IP address, advanced the encapsulation of GTP layer then after, send to UE; Behind the downlink data that UE receives, carry out decapsulation and handle, separate the GTP encapsulation, be handed down to the IP layer of UE side afterwards, carry out subsequent treatment from X-MAG.

Shown in Figure 23 a, its basic thought is to support to use Diameter, EAP agreement to realize controlling between UE and the X-MAG the mutual of signaling on terminal and the X-MAG.The chain of command protocol stack of X-MAG, UE and related network elements thereof is provided with shown in Figure 23 a in this method.Concrete:

Shown in Figure 23 a, the chain of command protocol stack of X-MAG comprises L1/L2 (Layer 1/Layer 2) layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer, that is to say that it is mutual on the IP layer, to pass through PMIPv6 between X-MAG and the P-GW; A side that connects UE, being carried on the IP layer is UDP layer, Diameter layer, EAP layer.Corresponding, in the protocol stack of UE side, UDP layer, Diameter layer, EAP layer are set on the IP layer, control the mutual of signaling to realize the PPP between UE and the X-MAG.

For the chain of command transmission, the access authentication of UE is accomplished through the EAP agreement, then accomplishes through Diameter for other chain of command signalings.

The user face protocol stack setting of X-MAG, UE and related network elements thereof is shown in Figure 23 b in this method.In this scene, set up gre tunneling between UE and the X-MAG and carried out the transmission of packet.

For the user plane transmission, in the UE side, upstream data after the encapsulation of GRE layer, sends to X-MAG after wrapping in IP layer encapsulation 3GPP core net IP address allocated; X-MAG carries out decapsulation and handles the upstream data bag from UE, separates the GRE encapsulation, keeps internal layer IP address, is encapsulated into afterwards and issues P-GW in the tunnel.For the downlink data from the tunnel of P-GW, X-MAG separates tunnel encapsulation, keeps internal layer IP address, advanced the encapsulation of GRE layer then after, send to UE; Behind the downlink data that UE receives, carry out decapsulation and handle, separate the GRE encapsulation, be handed down to the IP layer of UE side afterwards, carry out subsequent treatment from X-MAG.

Shown in figure 24, its basic thought is to support to use Session Initiation Protocol to realize the grouping route of the mutual and data of control signaling between UE and the X-MAG on terminal and the X-MAG.The chain of command protocol stack of X-MAG, UE and related network elements thereof is provided with shown in figure 24 in this method.Concrete:

Shown in figure 22, the chain of command protocol stack of X-MAG comprises L1/L2 (Layer 1/Layer 2) layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer, that is to say that it is mutual on the IP layer, to pass through PMIPv6 between X-MAG and the P-GW; A side that connects UE, being carried on the IP layer is UDP layer, SIP layer.Corresponding, in the protocol stack of UE side, UDP layer, SIP layer are set on the IP layer, to realize control signaling mutual between UE and the X-MAG.

For the chain of command transmission, use SIP to accomplish related procedure such as authentication, access between UE and the X-MAG.

All methods among the present invention all to use PMIPv6 to describe as example between X-MAG and the P-GW, also can be used GTP tunnel between X-MAG and the P-GW, and at this moment, its flow process is similar with use PMIPv6, only is to use GTP message to realize function corresponding.

The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.

Claims

1. converging fixed network and mobile network's system is characterized in that this system comprises: fixed network, mobile network, mobile anchor point gateway X-MAG and UE; Wherein,

2. system according to claim 1 is characterized in that,

3. system according to claim 1 is characterized in that, the control signaling that said X-MAG handles the UE access to mobile network is:

4. system according to claim 1 is characterized in that, the user face protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects BNG/BRAS, being carried on the IP layer is UDP layer, Yb user plane protocol layer; Accordingly, in the user face protocol stack on the Yb interface of said BNG/BRAS, UDP layer, Yb user plane protocol layer are set on the IP layer; In the user face protocol stack of the Ya interface of said UE, on Ethernet/802.11 serial protocols layer, carry Ya user plane protocol layer, carry the IP layer on the said Ya user plane protocol layer; Accordingly, in the user face protocol stack on the Ya interface of said BNG/BRAS, on the Ethernet layer, directly carry the Ya user plane protocol; The chain of command protocol stack of said P-GW is to carry the IP layer again in the superiors of the user face protocol stack of the side of said X-MAG connection P-GW.

5. system according to claim 1 is characterized in that, the data that said X-MAG route UE sends out outside the mobile network or receives are:

6. according to each described method of claim 1 to 5, it is characterized in that said fixed network is the fixed network of bridge mode.

7. converging fixed network and mobile network's method; It is characterized in that; This method comprises: X-MAG handles the control signaling of UE access to mobile network, and route UE sends out through the mobile network outside or the data of reception, and said X-MAG is connected between BNG/BRAS and mobile network's the P-GW of fixed network; Between UE and the said BNG/BRAS Ya interface is set, between said BNG/BRAS and the said X-MAG Yb interface is set.

8. method according to claim 7 is characterized in that, the chain of command protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects BNG/BRAS, being carried on the IP layer is UDP layer, Yb chain of command protocol layer; Accordingly, in the chain of command protocol stack on the Yb interface of said BNG/BRAS, UDP layer, Yb chain of command protocol layer are set on the IP layer; In the chain of command protocol stack of the Ya interface of said UE, on Ethernet/802.11 serial protocols layer, directly carry Ya chain of command agreement; Accordingly, in the chain of command protocol stack on the Ya interface of said BNG/BRAS, on the Ethernet layer, directly carry Ya chain of command agreement; The chain of command protocol stack of said P-GW is identical with the chain of command protocol stack of the side of said X-MAG connection P-GW.

9. method according to claim 7 is characterized in that, the control signaling that said X-MAG handles the UE access to mobile network is:

10. method according to claim 7 is characterized in that, the user face protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects BNG/BRAS, being carried on the IP layer is UDP layer, Yb user plane protocol layer; Accordingly, in the user face protocol stack on the Yb interface of said BNG/BRAS, UDP layer, Yb user plane protocol layer are set on the IP layer; In the user face protocol stack of the Ya interface of said UE, on Ethernet/802.11 serial protocols layer, carry Ya user plane protocol layer, carry the IP layer on the said Ya user plane protocol layer; Accordingly, in the user face protocol stack on the Ya interface of said BNG/BRAS, on the Ethernet layer, directly carry the Ya user plane protocol; The user face protocol stack of said P-GW is to carry the IP layer again in the superiors of the user face protocol stack of the side of said X-MAG connection P-GW.

11. method according to claim 7 is characterized in that, the data that said X-MAG route UE sends out outside the mobile network or receives are:

12., it is characterized in that said fixed network is the fixed network of bridge mode according to each described method of claim 7 to 11.

13. converging fixed network and mobile network's method; It is characterized in that; This method comprises: X-MAG handles the control signaling of UE access to mobile network; And the route UE data outside the mobile network, sending out or receive, said X-MAG is connected between BNG/BRAS and mobile network's the P-GW of fixed network, and said UE and said X-MAG go up and support to use the L2TP agreement to carry the PPP signaling.

14. method according to claim 13 is characterized in that, the chain of command protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects UE, being carried on the IP layer is UDP layer, L2TP layer, PPP layer; Corresponding, in the protocol stack of UE, UDP layer, L2TP layer and PPP layer are set on the IP layer, control the mutual of signaling to realize the PPP between UE and the X-MAG.

15. method according to claim 13 is characterized in that, the control signaling that said X-MAG handles the UE access to mobile network is:

16. method according to claim 13 is characterized in that, the user face protocol stack of said X-MAG comprises L1/L2 layer, IP layer at least, and the L1/L2 layer is the bottom bearing bed; On the IP layer, connect the side of P-GW, being carried on the IP layer is UDP layer and PMIPv6 layer; A side that connects UE, being carried on the IP layer is UDP layer, L2TP layer and PPP association layer; In the user face protocol stack of UE, UDP layer, L2TP layer and ppp protocol layer are set on the IP layer, on the PPP layer, carry the IP layer; The user face protocol stack of said P-GW is to carry the IP layer again in the superiors of the user face protocol stack of the side of said X-MAG connection P-GW.

17. method according to claim 13 is characterized in that, the data that said X-MAG route UE sends out outside the mobile network or receives are:

18., it is characterized in that said fixed network is the fixed network of route pattern according to each described method of claim 13 to 17.