CN102316602A - System, device and method for accessing user equipment into mobile network - Google Patents

Abstract

The invention discloses a system for accessing user equipment (UE) into a mobile network, which comprises the UE, a fixed network and a mobile network. The system also comprises an X-mobile anchor gateway (X-MAG) arranged between the fixed network and the mobile network, wherein the X-MAG is provided with a Y interface, the UE is provided with a Y interface, the X-MAG is connected with the UE through the Y interfaces; the X-MAG is used for processing a control signal of the UE accessed into the mobile network and routing data transmitted or received by the UE through the mobile network, one side of a control plane protocol stack of the X-MAG, which is connected with the UE, is provided with a Y interface control layer (Y-C); and one side of a user plane protocol stack of the X-MAG, which is connected with the UE is provided with a Y interface user layer (Y-U). The invention also discloses a method for accessing the X-MAG and the UE into the mobile network. By adopting the invention, the UE can realize trustable non-3GPP IP (3rd Generation Partnership Project Internet Protocol) access in a simple and feasible manner.

Description

A kind of system of subscriber equipment access to mobile network, Apparatus and method for

Technical field

The present invention relates to fixed network and mobile network's integration technology, be meant system, the Apparatus and method for of a kind of subscriber equipment (UE) access to mobile network especially.

Background technology

Third generation partner program (3GPP; 3rd Generation Partnership Project) grouping system (EPS of evolution; Evolved Packet System); As shown in Figure 1; UMTS land radio access web (E-UTRAN, Evolved Universal Terrestrial Radio Access Network), Mobility Management Entity (MME, Mobility Management Entity), gateway (S-GW by evolution; Serving Gateway), grouped data network gateway (P-GW/PDN GW; Packet Data Network Gateway), home subscriber server (HSS, Home Subscriber Server), 3GPP authentication and authorization charging (AAA) server, "Policy and Charging Rules Function (PCRF, Policy and Charging Rules Function) entity and other support nodes are formed.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 PDN GW, transmits data, and is responsible for pending datas such as paging are carried out buffer memory; P-GW then is the grouping system of 3GPP evolution and the borde gateway of packet data network (PDN, Packet Data Network), be responsible for to realize the access of PDN and between EPS and PDN, transmits function such as data.Hereinafter, abbreviate the 3GPP aaa server as 3GPP AAA.

In the EPS system, when UE inserts through E-UTRAN, can adopt conventional data transmission platform (GTP, General Data Transfer Platform) between S-GW and the P-GW, also can adopt proxy mobile IPv 6 (PMIPv6) agreement; 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 (ePDG, Evolved Packet Data Gateway) that needs through evolution and 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, adopts two stack mobile IP v 6 (DSMIPv6, Dual Stack Mobile IPv6) agreements, and control and mobile management are provided.

In the EPS system, strategy and charge execution function (PCEF, Policy and charging enforcement function) are present among the P-GW, and PCRF and P-GW are through Gx interface exchange message.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 (BBERF; Bearer Binding and Event Reporting Function) 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; UE is through routing gateway (RG; Routing Gateway), Access Network (AN; Access Network), wideband network gateway/Broadband Remote Access Server (BNG//BRAS, Broadband Network Gateway/Broadband Remote Access Server) is linked into external network PDN according to this.Here, comprise DSLAM (DSLAM, Digital Subscriber Line Access Multiplexer), ONT Optical Network Terminal network elements such as (ONT, Optical Network Terminal) in the said Access Network; Said external network PDN can be Internet or operator's enterprise network etc.Wherein, UE can be linked into the AAA of broadband forum (BBF AAA, Broadband Forum 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.Hereinafter, abbreviate the BBF aaa server as BBF AAA.

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.

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.But, when fixed network is linked into EPS as non-3GPP IP trusty, when promptly adopting the S2a access way; Need fixed network BNG/BRAS to support the function of the mobile anchor point gateway (MAG, Mobile Anchor Gateway) in the PMIPv6 agreement, this just means the BNG/BRAS of the fixed network of will upgrading; But each BNG/BRAS of upgrading fixed network; Concerning operator arranged net, the cost of being paid was very big, and also little reality.At present, also nobody proposes simple possible and supports the scheme that the non-3GPP IP of trusted inserts.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of system, Apparatus and method for of UE access to mobile network, makes UE can realize that the non-3GPP IP of trusted inserts through the mode of simple possible.

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

The invention provides a kind of system of UE access to mobile network, comprise UE, fixed network and mobile network; This system also comprises the mobile anchor point gateway X-MAG that is arranged between fixed network and the mobile network; Said X-MAG is provided with the Y interface, and said UE is provided with the Y interface, and X-MAG links to each other through the Y interface with UE;

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;

Connect UE one side in the chain of command protocol stack of said X-MAG and be provided with Y interface control plane layer Y-C, connect UE one side in the user face protocol stack of said X-MAG and be provided with Y interface user plane layer Y-U; Said Y-C layer is used to be carried on the chain of command signaling on the IP layer; Said Y-U layer is used to realize the double-deck IP encapsulation/decapsulation of packet.

Wherein, connect UE one side in the chain of command protocol stack of said X-MAG and also be provided with IP layer and bottom bearing bed, be positioned at successively under the Y-C layer; Connect UE one side in the user face protocol stack of said X-MAG and also be provided with IP layer and bottom bearing bed, be positioned at successively under the Y-U layer.

In the such scheme, said X-MAG links to each other with the P-GW that is arranged in the mobile network; Connect P-GW one side in the chain of command protocol stack of said X-MAG and be disposed with bottom bearing bed, IP layer, PMIPv6 layer from bottom to top; Connect P-GW one side in the user face protocol stack of said X-MAG and be disposed with bottom bearing bed, IP layer, tunnel layer from bottom to top.

In the such scheme, said X-MAG links to each other with 3GPP aaa server or 3GPP AAA agency through the BBF aaa server in the fixed network; Perhaps, said X-MAG directly links to each other with 3GPP AAA or 3GPP AAA agency.

In the such scheme, said mobile network is a local network; Said X-MAG links to each other with the P-GW that is positioned at local network through local interface; Said mobile network is divided into home network and visited network; Said X-MAG links to each other with the P-GW that is positioned at home network through the roaming interface; Perhaps, said X-MAG links to each other with the P-GW that is positioned at visited network through local interface.

The present invention also provides a kind of X-MAG, and this X-MAG is provided with the Y interface, and connection UE one side is provided with the Y-C layer in the chain of command protocol stack of X-MAG, in the user face protocol stack of X-MAG, connects UE one side and is provided with the Y-U layer; Said Y-C layer is used to be carried on the chain of command signaling on the IP layer; Said Y-U layer is used to realize the double-deck IP encapsulation/decapsulation of packet.

The present invention provides a kind of method of UE access to mobile network again, is provided with to be connected in the X-MAG between fixed network and the mobile network, and the Y interface is set for X-MAG and UE;

In the chain of command protocol stack of said X-MAG, connect UE one side the Y-C layer is set, in the user face protocol stack of said X-MAG, connect UE one side the Y-U layer is set; And in the chain of command protocol stack of UE and user face protocol stack, Y-C layer and Y-U layer are set respectively;

When UE sent out data outward via the mobile network, UE sent the data to X-MAG, sent to mobile network's side via X-MAG; Perhaps, UE receives by mobile network's side through X-MAG changes data sent;

During the mutual control information of UE and mobile network, the control signaling that UE will carry control information sends to X-MAG, triggers X-MAG and initiates the associative operation in the mobile network; Perhaps, X-MAG sends Downlink Control Information and gives UE after receiving the signaling triggering from mobile network's side network element or self incident.

In the such scheme; Said UE sends the data to X-MAG; Sending to mobile network's side via X-MAG is: 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; Use fixed network to encapsulate location as outer source IP address, X-MAG ground as outer purpose IP address as the UE IP address allocated again, the transmitting uplink data after the Y-U layer will encapsulate is given X-MAG afterwards; The packet from UE side of X-MAG to receiving, decapsulation fall outer source IP address and purpose IP address, keep internal layer source IP address and purpose IP address, are encapsulated into afterwards in the PMIPv6 tunnel and send;

UE receives by mobile network's side commentaries on classics data sent through X-MAG: X-MAG separates the PMIPv6 encapsulation to downlink data; Keep internal layer source IP address and purpose IP address; Use then fixed network as the UE IP address allocated as the address of outer purpose IP address, X-MAG as outer source IP address encapsulation after, be transferred to UE through the Y-U layer; The downlink data from X-MAG of UE to receiving carries out the decapsulation of two-layer IP address and handles, and obtains payload.

In the such scheme; The control signaling that UE will carry control information sends to X-MAG; Triggering the associative operation that X-MAG initiates in the mobile network is: UE to upstream control signaling use fixed network as the UE IP address allocated as the address of source IP address, X-MAG as purpose IP address after, send to X-MAG through the Y-C layer; After X-MAG receives the control signaling of encapsulation, remove the encapsulation of IP address, obtain the content of control signaling, and initiate follow-up associative operation according to the content of control signaling;

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; After will controlling signaling and using fixed network to encapsulate as source address as destination address, X-MAG address, send to UE as the UE IP address allocated; UE receives back releasing IP address encapsulation, controlled signaling content.

In the such scheme, said upstream control signaling is: PPP LCP configuring request or PPP NCP configuring request or PPP LCP termination request or PPP NCP termination request that UE sends to X-MAG; Said descending control signaling is: the PPP NCP configuration that X-MAG sends to UE is replied or PPP LCP configuration is replied or PPP LCP stops replying or PPP NCP stops replying.

In the such scheme, said UE and mobile network also comprise alternately: UE is through carrying out the access authentication of user's access to mobile network between X-MAG and the 3GPPHSS/AAA.

In the such scheme, UE inserts/and when being attached to the mobile network, the mutual control information of said UE and mobile network specifically comprises:

A1.UE is through authentication and obtain fixed network for after self IP address allocated, sets up strategy session via fixed network and "Policy and Charging Rules Function PCRF;

A2.UE sends access/attach request to X-MAG, and to carry fixed network be the UE IP address allocated, and the X-MAG request of receiving is that UE IP address allocated and UE set up incidence relation according to fixed network;

A3. carry out the access authentication of user's access to mobile network based on X-MAG;

A4.X-MAG is mutual as MAG and the P-GW of PMIPv6, and obtaining the 3GPP core net is the UE IP address allocated, and the IP address that obtains is sent to UE;

A5.UE accomplishes data transmit-receive through two IP addresses that obtain.

In the such scheme, UE is during from mobile network's off-line/attachment removal, and the mutual control information of said UE and mobile network specifically comprises:

When b1.UE needed off-line/attachment removal or deletion PDN to connect, UE sent the request of termination through the Y interface to X-MAG;

B2.X-MAG and P-GW are mutual, and request is removed tunnel binding with P-GW, the IP-CAN session between P-GW dismounting and the PCRF, and the sign of notice 3GPP AAA deletion P-GW;

B3.X-MAG returns to UE through the Y interface and stops replying, and notice UE off-line/attachment removal/PDN connects deletion to be accomplished.

In the such scheme, when fixed network was switched, the mutual control information of said UE and mobile network specifically comprised UE from the 3GPP Access Network:

When c1.UE decision switches to fixed network, obtain fixed network earlier, and set up strategy session via fixed network and "Policy and Charging Rules Function PCRF for after self IP address allocated;

C2.UE sends access/attach request to X-MAG, and to carry fixed network be the UE IP address allocated, and the X-MAG request of receiving is that UE IP address allocated and UE set up incidence relation according to fixed network;

C3. carry out the access authentication of user's access to mobile network based on X-MAG;

C4.X-MAG is mutual as MAG and the P-GW of PMIPv6, and obtaining the 3GPP core net is the UE IP address allocated, and the IP address that obtains is sent to UE;

C5.P-GW initiates 3GPP access network resource deexcitation flow process.

In the such scheme, when UE set up the connection of additional packet data network, the mutual control information of said UE and mobile network specifically comprised:

When d1.UE need add the PDN connection, send PPP NCP configuring request, carry out PPP NCP with X-MAG and consult to X-MAG;

After d2.X-MAG received the PPP NCP configuring request of UE transmission, obtaining fixed network was the UE IP address allocated;

D3.X-MAG is mutual as MAG and the P-GW of PMIPv6, the tunnel binding of request and P-GW, and obtaining the 3GPP core net is the UE IP address allocated;

D4.X-MAG accomplishes PPP NCP through Y interface and UE and consults, and replys sending to UE through PPP NCP configuration.

The system of UE access to mobile network provided by the present invention, Apparatus and method for; Between fixed network and mobile network, be provided for realizing the mobile anchor point gateway X-MAG of the non-3GPP IP access of trusted; Make UE to realize that via fixed network the non-3GPP IP of trusted inserts through X-MAG, and then the EPS of access to mobile network.

The present invention need not improve each BNG/BRAS in the fixed network; Make it support the XMG function among the PMIPv6; As long as between fixed network and mobile network, increase X-MAG is set, and makes X-MAG support the MAG function of PMIPv6, can realize the UE access to mobile network; Not only make network topology simple and convenient, be easy to realize, and for operator, can reduce operation cost.

Description of drawings

Fig. 1 is the sketch map of EPS system architecture;

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

Fig. 3 is the chain of command protocol stack sketch map of X-MAG among the present invention and related network elements thereof;

Fig. 4 is the user face protocol stack sketch map of X-MAG among the present invention and related network elements thereof;

Fig. 5 is first kind of network architecture sketch map of UE access to mobile network of the present invention;

Fig. 6 is second kind of network architecture sketch map of UE access to mobile network of the present invention;

Fig. 7 is the third network architecture sketch map of UE access to mobile network of the present invention;

Fig. 8 is the 4th kind of network architecture sketch map of UE access to mobile network of the present invention;

Fig. 9 is the 5th kind of network architecture sketch map of UE access to mobile network of the present invention;

Figure 10 is the 6th kind of network architecture sketch map of UE access to mobile network of the present invention;

The realization flow sketch map that Figure 11 inserts/adheres to for UE under the network integration framework of the present invention;

Figure 12 is the realization flow sketch map of UE off-line/attachment removal under the network integration framework of the present invention;

The realization flow sketch map that Figure 13 switches to fixed network from 3GPP IP Access Network for UE under the network integration framework of the present invention;

Figure 14 sets up additional PDN down for network integration framework of the present invention and connects the realization flow sketch map of setting up.

Embodiment

Basic thought of the present invention is: the mobile anchor point gateway X-MAG that is provided for realizing the non-3GPP IP access of trusted; Be connected between fixed network and the mobile network; And the Y interface is set between UE and X-MAG, make the UE can be through X-MAG via fixed network, with the EPS of the non-3GPP IP of trusted access way access to mobile network.

Concrete, said X-MAG is connected between BNG/BRAS and mobile network's the P-GW of fixed network, is provided with the Y interface; And said UE strengthens has the function of supporting the Y interface, passes through the intercommunication of Y interface between UE 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.

For realizing the transmission between X-MAG and the UE, the protocol stack of X-MAG need be set, and improve the protocol stack of UE, make UE, X-MAG be carried on the chain of command signaling on the IP layer in the support of Y interface, support the double-deck IP encapsulation/decapsulation of packet.X-MAG respectively with UE, P-GW, when BNG/BRAS communicates; The protocol stack of X-MAG, UE, P-GW and BNG/BRAS is provided with respectively like Fig. 3 and shown in Figure 4; Wherein, Fig. 3 is that the chain of command protocol stack of X-MAG and related network elements thereof is provided with, and Fig. 4 is the user face protocol stack setting of X-MAG and related network elements thereof.Concrete:

As shown in Figure 3, 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 the PMIPv6 layer, that is to say, mutual through the PMIPv6 layer on the IP layer between X-MAG and the P-GW; A side that connects UE, being carried on the IP layer is the Y-C layer, that is: the control surface layer of Y interface is used to be carried on the chain of command signaling on the IP layer, that is to say, on the IP layer, controls signaling alternately through the Y-C layer between X-MAG and the UE.Accordingly, in the protocol stack of UE side, also increase on the IP layer and be provided with the Y-C layer, to realize the control Signalling exchange between UE and the X-MAG.

For the chain of command transmission, in the UE side, the control signaling again in Y-C layer encapsulation fixed network IP address allocated, is transferred to the Y-C layer of X-MAG side afterwards after IP layer encapsulation 3GPP core net IP address allocated; Accordingly, the control signaling from UE side Y-C layer of the Y-C layer of X-MAG side to receiving carried out decapsulation and handled, and removes outer IP address, keeps internal layer IP address, is encapsulated into the PMIPv6 tunnel afterwards and issues P-GW.And in the X-MAG side, the decapsulation of Y-C layer keeps internal layer IP address from the control signaling in the PMIPv6 tunnel of P-GW, with after the encapsulation of fixed network IP address allocated, is transferred to the Y-C layer of UE side then; Accordingly, the control signaling from X-MAG side Y-C layer of the Y-C layer of UE side to receiving carried out decapsulation and handled, and removes outer IP address, is handed down to the IP layer of UE side afterwards, carries out subsequent treatment.The IP layer of UE side and X-MAG side, the processing of L1/L2 layer are all identical with the processing of prior art.

As shown in Figure 4, the user face protocol stack of X-MAG comprises L1/L2 layer, IP layer at least; On the IP layer, connect the side of P-GW, being carried on the IP layer is tunnel layer, that is to say, mutual through tunnel layer (Tunnel) on the IP layer between X-MAG and the P-GW; A side that connects UE, being carried on the IP layer is the Y-U layer, that is: user's surface layer of Y interface is used to realize the double-deck IP encapsulation/decapsulation of packet, that is: the encapsulation/decapsulation of IP over IP data; That is to say, on the IP layer, pass through Y-U layer interaction data between X-MAG and the UE.Accordingly, in the protocol stack of UE side, also increase on the IP layer and be provided with the Y-U layer, to realize the data interaction between UE and the X-MAG.Here, said IP overIP data are meant that the transmission data outside when transmitting as payload is packaged with two-layer IP address, and one is 3GPP core net IP address allocated, and one is the fixed network IP address allocated.

For the user plane transmission,, after upstream data wraps in IP layer encapsulation 3GPP core net IP address allocated,, be transferred to the Y-U layer of X-MAG side afterwards again in Y-U layer encapsulation fixed network IP address allocated in the UE side; Accordingly, the packet from UE side Y-U layer of the Y-U layer of X-MAG side to receiving carries out decapsulation and handles, and removes outer IP address, keeps internal layer IP address, is encapsulated into afterwards and issues P-GW in the tunnel.And in the X-MAG side, the decapsulation of Y-U layer keeps internal layer IP address from the downlink data in the tunnel of P-GW, with after the encapsulation of fixed network IP address allocated, is transferred to the Y-U layer of UE side then; Accordingly, the downlink data from X-MAG side Y-U layer of the Y-U layer of UE side to receiving carries out decapsulation and handles, and removes outer IP address, is handed down to the IP layer of UE side afterwards, carries out subsequent treatment.The IP layer of UE side and X-MAG side, the processing of L1/L2 layer are all identical with the processing of prior art.

Based on the setting of UE side and X-MAG side 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 can also receive triggering signaling/access demand signalling that UE sends, and from the signaling of receiving, to obtain fixed network be the UE IP address allocated; The source IP address that perhaps from trigger signaling/access demand signalling, obtains is set up the corresponding relation between source IP address 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 RcvocationIndication) 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 BBF aaa server/agency 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.

Be provided with based on chain of command protocol stack Y-C layer and user face protocol stack Y-U layer, the support of Y interface is carried on chain of command signaling on the IP layer; Support the encapsulation/decapsulation of IP over IP data; 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.

Need to prove: alleged X-MAG, Y interface, Y-U layer, Y-C layer among this paper; A kind of title call of proposing just for for convenience particular gateway, interface, protocol layer among the present invention; 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, as: in protocol stack, increase Y-C layer, Y-U layer or the like.

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.

Embodiment one:

Present embodiment is first kind of network architecture of the UE EPS that passes through the X-MAG access to mobile network; As shown in Figure 5; 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, and the network architecture shown in Figure 5 is the network architecture of non-roaming scene.In the present embodiment, X-MAG links to each other with 3GPP AAA through BBF aaa server/agency (Server/Proxy), realizes the access authentication of user based on 3GPP AAA.

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, and is connected with UE through the Y interface; The chain of command protocol stack of X-MAG and UE and User Agreement stack are provided with respectively like Fig. 3 and shown in Figure 4; On the IP layer of the chain of command protocol stack of X-MAG and UE and User Agreement stack, be respectively arranged with Y-C layer and Y-U 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 X-MAG, sends to mobile network's side via X-MAG; Perhaps, UE receives by mobile network's side through X-MAG changes data sent;

When UE and the mutual control information of mobile network, the control signaling that UE will carry control information sends to X-MAG, triggers X-MAG and initiates the associative operation in the mobile network; Perhaps, X-MAG sends Downlink Control Information and gives UE after receiving the signaling triggering from mobile network's side network element or self incident.

Concrete; Said UE sends the data to X-MAG; Sending to mobile network's side via X-MAG is: 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; Use fixed network to encapsulate location as outer source IP address, X-MAG ground as outer purpose IP address as the UE IP address allocated again, the transmitting uplink data after the Y-U layer will encapsulate is given X-MAG afterwards; The packet from UE side of X-MAG to receiving, decapsulation fall outer source IP address and purpose IP address, keep internal layer source IP address and purpose IP address, are encapsulated into afterwards in the PMIPv6 tunnel and send;

UE receives by mobile network's side commentaries on classics data sent through X-MAG: X-MAG separates the PMIPv6 encapsulation to downlink data; Keep internal layer source IP address and purpose IP address; Use then fixed network as the UE IP address allocated as the address of outer purpose IP address, X-MAG as outer source IP address encapsulation after, be transferred to UE through the Y-U layer; The downlink data from X-MAG of UE to receiving carries out the decapsulation of two-layer IP address and handles, and obtains payload.

The control signaling that UE will carry control information sends to X-MAG; Triggering the associative operation that X-MAG initiates in the mobile network is: UE to upstream control signaling use fixed network as the UE IP address allocated as the address of source IP address, X-MAG as purpose IP address after, send to X-MAG through the Y-C layer; After X-MAG receives the control signaling of encapsulation, remove the encapsulation of IP address, obtain the content of control signaling, and initiate follow-up associative operation according to the content of control signaling;

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; After will controlling signaling and using fixed network to encapsulate as source address as destination address, X-MAG address, send to UE as the UE IP address allocated; UE receives back releasing IP address encapsulation, controlled signaling content.

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 two:

Present embodiment is second kind of network architecture of the UE EPS that passes through the X-MAG access to mobile network; As shown in Figure 6; 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, and the network architecture shown in Figure 6 is the network architecture of non-roaming scene.

Different with embodiment one 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 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, and is connected with UE through the Y interface; The chain of command protocol stack of X-MAG and UE and User Agreement stack are provided with respectively like Fig. 3 and shown in Figure 4; On the IP layer of the chain of command protocol stack of X-MAG and UE and User Agreement stack, be respectively arranged with Y-C layer and Y-U 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 X-MAG, sends to mobile network's side via X-MAG; Perhaps, UE receives by mobile network's side through X-MAG changes data sent;

When UE and the mutual control information of mobile network, the control signaling that UE will carry control information sends to X-MAG, triggers X-MAG and initiates the associative operation in the mobile network; Perhaps, X-MAG sends Downlink Control Information and gives UE after receiving the signaling triggering from mobile network's side network element or self incident.

Wherein, concrete control information detailed description mutual and data forwarding process and embodiment one is identical between UE and the X-MAG.

Embodiment three:

Present embodiment is the third network architecture of the UE EPS that passes through the X-MAG access to mobile network, and as shown in Figure 7, 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 7 is the network architecture of roaming scence, local route; Comprise local public land mobile network (hPLMN; Home Public Land MobileNetwork) 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; BBF aaa server/agency 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 3GPP AAA.

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.

In the present embodiment, protocol stack setting, interface function and the uplink and downlink transmission course etc. of X-MAG and UE are all identical with embodiment one described function, principle.

Embodiment four:

Present embodiment is the 4th kind of network architecture of the UE EPS that passes through the X-MAG access to mobile network, and as shown in Figure 8, 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 8 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 three 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.

In the present embodiment, protocol stack setting, interface function and the uplink and downlink transmission course etc. of X-MAG and UE are all identical with embodiment two described functions, principle.

Embodiment five:

Present embodiment is the 5th kind of network architecture of the UE EPS that passes through the X-MAG access to mobile network, and as shown in Figure 9, 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 9 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 3GPP AAA 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 3GPP AAA.

What present embodiment and embodiment three 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.

In the present embodiment, protocol stack setting, interface function and the uplink and downlink transmission course etc. of X-MAG and UE are all identical with embodiment one described function, principle.

Embodiment six:

Present embodiment is the 6th kind of network architecture of the UE EPS that passes through the X-MAG access to mobile network, and shown in figure 10, 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 10 and embodiment five 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 five 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 3GPP AAA 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.

In the present embodiment, protocol stack setting, interface function and the uplink and downlink transmission course etc. of X-MAG and UE are all identical with embodiment two described functions, principle.

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 11 to Figure 14, 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.

The realization flow that Figure 11 inserts/adheres to for UE under the network integration framework of the present invention; Based on the network architecture be between mobile network and fixed network, X-MAG to be set; X-MAG can realize the MAG function among the PMIPv6; Y interactive interfacing through being provided with between X-MAG and the UE makes UE insert/be attached to the EPS core net through fixed network, and fixed network inserts as the non-3GPP IP of the trusted of EPS.Concrete, UE access/attachment flow of the present invention is shown in figure 11, may further comprise the steps:

Step 1101:UE according to the existing fixed network authentication mode through authentication.

Step 1102:UE sets up local the connection with fixed network, and obtains the local ip address IP1 of fixed network for self distributing.

Step 1103: 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; During setting up, BNG/BRAS and BPCF ask/issue the session of dynamic strategy, so that Resource Allocation in Networks and user admission are realized accurately control.

Step 1104: based on the triggering of step 1103 operation, BPCF initiates strategy session to PCRF 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 to strategy and obtains relevant QoS and charging policy;

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

Step 1105a:UE sends ppp link control protocol (LCP, Link Control Protocol) configuring request through the Y interface to X-MAG, carries out PPP LCP with X-MAG and consults;

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

Step 1105b:UE is based on the access authentication that carries out user's access to mobile network 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 1105c:UE sends PPP NCP configuring request to X-MAG, carries out PPP NCP with X-MAG and consults;

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 1106:X-MAG received the PPP NCP configuring request of UE transmission, parsing the fixed network of carrying in the signaling was UE IP address allocated IP1, perhaps from the signaling head, obtains the IP address ip 1 that UE obtains in fixed network; After treating that completion is set up in follow-up PMIPv6 tunnel, X-MAG can set up the corresponding relation and the storage of IP1 and PMIPv6 address.

Step 1107:X-MAG sends PBU message and gives P-GW, the tunnel binding of request and P-GW as the MAG of PMIPv6.

After step 1108: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 1109: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 1110: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 1111:X-MAG accomplishes PPP NCP through Y interface and UE and consults, and replys through PPP NCP configuration the IP address ip 2 of distributing to UE is sent to UE.

Step 1112: 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.

Step 1113: accomplish the transmission of data service;

Here, UE can accomplish transfer of data according to IP1 that obtains and IP2, and the encapsulation format of IP over IP is adopted in the transmission of the data between UE and the outside PDN between X-MAG and UE, specifically is exactly:

For uplink data messages, UE is with 3GPP core net IP address allocated IP2 encapsulation of data message, again fixed network IP address allocated IP1 in the skin encapsulation; Behind the data arrives X-MAG, X-MAG peels off outermost layer address ip 1, and data are encapsulated in the PMIPv6 tunnel between X-MAG and the P-GW again, sends to P-GW.

For downlink data message; Behind P-GW arrival X-MAG, after X-MAG removes PMIPv6 tunnel head with receiving data, be the local ip address IP1 that UE distributes in packet outer layer encapsulation fixed network; And route is given UE; After UE receives this data message, peel off outermost layer and time outer field IP address ip 1 and IP2 successively, obtain payload.

Figure 12 is the realization flow of UE off-line/attachment removal under the network integration framework of the present invention; Based on the network architecture be between mobile network and fixed network, X-MAG to be set; X-MAG can realize the MAG function among the PMIPv6, the Y interactive interfacing through being provided with between X-MAG and the UE.Said off-line/attachment removal process is after UE inserts/be attached to the EPS core net through fixed network, again from fixed network off-line/attachment removal or delete certain PDN and connect.Concrete, UE of the present invention is shown in figure 12 from mobile network's off-line/attachment removal flow process, may further comprise the steps:

Step 1201:UE inserts the EPS core net through fixed network, and sets up at least one PDN connection.

Step 1202:UE sends the PPP session and stops request to X-MAG, and request off-line/attachment removal/deletion PDN connects;

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.

Step 1203:X-MAG sends PBU message and gives P-GW, 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 1204:P-GW dismounting and the PCRF.

Step 1205: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 1206:P-GW responds PBA message to X-MAG.

Step 1207:X-MAG returns PPP through the Y interface to UE and stops replying, and notice UE off-line/attachment removal/PDN connects deletion to be accomplished;

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 1208: 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.

The realization flow that Figure 13 switches to fixed network from the 3GPP Access Network for UE under the network integration framework of the present invention; Based on the network architecture be between mobile network and fixed network, X-MAG to be set; X-MAG can realize the MAG function among the PMIPv6, the Y interactive interfacing through being provided with between X-MAG and the UE.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 is shown in figure 13 to the switching flow of fixed network from the 3GPP Access Network, may further comprise the steps:

Step 1301:UE accomplishes trusted 3GPP IP through fixed network and inserts.

Step 1302:UE determines to switch to fixed network for some reason;

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

Step 1303:UE accomplishes local access authentication and authentication via BNG/BRAS and BBF AAA.

Step 1304:UE is connected with this locality that BNG/BRAS sets up fixed network, and obtains the local ip address IP1 of fixed network for self distributing.

Step 1305: 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 1306: based on the triggering of step 1305, BPCF initiates strategy session to PCRF and sets up request, sets up strategy session;

Here, described strategy session is similar to the gateway control session that defines among the 3GPP; Through this session, BPCF unifies control point PCRF to strategy and obtains relevant QoS and charging policy;

Generally, under roaming scence, BPCF can pass through vPCRF and arrive hPCRF; Under the non-roaming scene, there is not vPCRF.

Step 1307a:UE sends PPP LCP configuring request through the Y interface to X-MAG, carries out PPP LCP with X-MAG and consults;

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

Step 1307b:UE is based on the access authentication that carries out user's access to mobile network 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 1307c:UE sends PPP NCP configuring request to X-MAG, carries out PPPNCP with X-MAG and consults;

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 1308:X-MAG received the PPP NCP configuring request of UE transmission, parsing the fixed network of carrying in the signaling was UE IP address allocated IP1, perhaps from the signaling head, obtains the IP address ip 1 that UE obtains in fixed network; After treating that completion is set up in follow-up PMIPv6 tunnel, X-MAG can set up the corresponding relation and the storage of IP1 and PMIPv6 address.

Step 1309:X-MAG sends PBU message and gives P-GW, the tunnel binding of request and P-GW as the MAG of PMIPv6.

After step 1310:P-GW receives PBU message, set up the PMIPv6 tunnel binding relation of self and X-MAG, and trigger the resource deletion that 3GPP inserts.

Step 1311: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 1312:X-MAG accomplishes PPP NCP through Y interface and UE and consults, and replys through PPP NCP configuration the IP address ip 2 of distributing to UE is sent to UE.

Step 1313: 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.

Step 1314: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.

Figure 14 sets up the realization flow that additional PDN connects down for network integration framework of the present invention; Based on the network architecture be between mobile network and fixed network, X-MAG to be set; X-MAG can realize the MAG function among the PMIPv6, the Y interactive interfacing through being provided with between X-MAG and the UE.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, it is shown in figure 14 that the present invention sets up the flow process of adding the PDN connection, may further comprise the steps:

Step 1401:UE inserts/is attached to the EPS core net by fixed network, and concrete access/attachment flow such as Figure 12 are said.

When step 1402:UE need add the PDN connection, send PPP NCP configuring request, carry out PPP NCP with X-MAG and consult 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 1403:X-MAG received the PPP NCP configuring request of UE transmission, parsing the fixed network of carrying in the signaling was UE IP address allocated IP1, perhaps from the signaling head, obtains the IP address ip 1 that UE obtains in fixed network; After treating that completion is set up in follow-up PMIPv6 tunnel, X-MAG can set up the corresponding relation and the storage of IP1 and PMIPv6 address.

Step 1404:X-MAG sends PBU message and gives P-GW, the tunnel binding of request and P-GW as the MAG of PMIPv6.

After step 1405:P-GW receives PBU message, create BCE, 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 1406: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 1407: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 1408:X-MAG accomplishes PPP NCP through Y interface and UE and consults, and replys through PPP NCP configuration the IP address ip 2 of distributing to UE is sent to UE.

Step 1409: 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.

The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (17)

1. the system of a user equipment (UE) access to mobile network comprises UE, fixed network and mobile network; It is characterized in that this system also comprises the mobile anchor point gateway X-MAG that is arranged between fixed network and the mobile network; Said X-MAG is provided with the Y interface, and said UE is provided with the Y interface, and X-MAG links to each other through the Y interface with UE;

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;

Connect UE one side in the chain of command protocol stack of said X-MAG and be provided with Y interface control plane layer Y-C, connect UE one side in the user face protocol stack of said X-MAG and be provided with Y interface user plane layer Y-U; Said Y-C layer is used to be carried on the chain of command signaling on the IP layer; Said Y-U layer is used to realize the double-deck IP encapsulation/decapsulation of packet.

2. system according to claim 1 is characterized in that, connects UE one side in the chain of command protocol stack of said X-MAG and also is provided with IP layer and bottom bearing bed, is positioned at successively under the Y-C layer;

Connect UE one side in the user face protocol stack of said X-MAG and also be provided with IP layer and bottom bearing bed, be positioned at successively under the Y-U layer.

3. system according to claim 1 is characterized in that, said X-MAG links to each other with the packet data gateway P-GW that is arranged in the mobile network;

Connect P-GW one side in the chain of command protocol stack of said X-MAG and be disposed with bottom bearing bed, IP layer, PMIPv6 layer from bottom to top;

Connect P-GW one side in the user face protocol stack of said X-MAG and be disposed with bottom bearing bed, IP layer, tunnel layer from bottom to top.

4. according to claim 1,2 or 3 described systems, it is characterized in that said X-MAG links to each other with 3GPP aaa server or 3GPP AAA agency through the authentication and authorization charging BBF of the broadband forum aaa server in the fixed network;

Perhaps, said X-MAG directly links to each other with 3GPP AAA or 3GPP AAA agency.

5. system according to claim 4 is characterized in that, said mobile network is a local network; Said X-MAG links to each other with the P-GW that is positioned at local network through local interface;

Said mobile network is divided into home network and visited network; Said X-MAG links to each other with the P-GW that is positioned at home network through the roaming interface; Perhaps, said X-MAG links to each other with the P-GW that is positioned at visited network through local interface.

6. an X-MAG is characterized in that, said X-MAG is provided with the Y interface, and connection UE one side is provided with the Y-C layer in the chain of command protocol stack of X-MAG, in the user face protocol stack of X-MAG, connects UE one side and is provided with the Y-U layer;

Said Y-C layer is used to be carried on the chain of command signaling on the IP layer; Said Y-U layer is used to realize the double-deck IP encapsulation/decapsulation of packet.

7. X-MAG according to claim 6 is characterized in that, connects UE one side in the chain of command protocol stack of said X-MAG and also is provided with IP layer and bottom bearing bed, is positioned at successively under the Y-C layer;

Connect UE one side in the user face protocol stack of said X-MAG and also be provided with IP layer and bottom bearing bed, be positioned at successively under the Y-U layer.

8. according to claim 6 or 7 described X-MAG, it is characterized in that, connect P-GW one side in the chain of command protocol stack of said X-MAG and be disposed with bottom bearing bed, IP layer, PMIPv6 layer from bottom to top;

Connect P-GW one side in the user face protocol stack of said X-MAG and be disposed with bottom bearing bed, IP layer, tunnel layer from bottom to top.

9. the method for a UE access to mobile network is characterized in that, is provided with to be connected in the X-MAG between fixed network and the mobile network, and the Y interface is set for X-MAG and UE;

In the chain of command protocol stack of said X-MAG, connect UE one side the Y-C layer is set, in the user face protocol stack of said X-MAG, connect UE one side the Y-U layer is set; And in the chain of command protocol stack of UE and user face protocol stack, Y-C layer and Y-U layer are set respectively;

When UE sent out data outward via the mobile network, UE sent the data to X-MAG, sent to mobile network's side via X-MAG; Perhaps, UE receives by mobile network's side through X-MAG changes data sent;

During the mutual control information of UE and mobile network, the control signaling that UE will carry control information sends to X-MAG, triggers X-MAG and initiates the associative operation in the mobile network; Perhaps, X-MAG sends Downlink Control Information and gives UE after receiving the signaling triggering from mobile network's side network element or self incident.

10. method according to claim 9; It is characterized in that; Said UE sends the data to X-MAG; Sending to mobile network's side via X-MAG is: 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; Use fixed network to encapsulate location as outer source IP address, X-MAG ground as outer purpose IP address as the UE IP address allocated again, the transmitting uplink data after the Y-U layer will encapsulate is given X-MAG afterwards; The packet from UE side of X-MAG to receiving, decapsulation fall outer source IP address and purpose IP address, keep internal layer source IP address and purpose IP address, are encapsulated into afterwards in the PMIPv6 tunnel and send;

UE receives by mobile network's side commentaries on classics data sent through X-MAG: X-MAG separates the PMIPv6 encapsulation to downlink data; Keep internal layer source IP address and purpose IP address; Use then fixed network as the UE IP address allocated as the address of outer purpose IP address, X-MAG as outer source IP address encapsulation after, be transferred to UE through the Y-U layer; The downlink data from X-MAG of UE to receiving carries out the decapsulation of two-layer IP address and handles, and obtains payload.

11. method according to claim 9; It is characterized in that; The control signaling that UE will carry control information sends to X-MAG; Triggering the associative operation that X-MAG initiates in the mobile network is: UE to upstream control signaling use fixed network as the UE IP address allocated as the address of source IP address, X-MAG as purpose IP address after, send to X-MAG through the Y-C layer; After X-MAG receives the control signaling of encapsulation, remove the encapsulation of IP address, obtain the content of control signaling, and initiate follow-up associative operation according to the content of control signaling;

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; After will controlling signaling and using fixed network to encapsulate as source address as destination address, X-MAG address, send to UE as the UE IP address allocated; UE receives back releasing IP address encapsulation, controlled signaling content.

12., it is characterized in that said upstream control signaling is: PPP LCP configuring request or PPP NCP configuring request or PPP LCP termination request or PPP NCP termination request that UE sends to X-MAG according to claim 9 or 11 described methods;

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

13. method according to claim 9 is characterized in that, said UE and mobile network also comprise alternately: UE is through carrying out the access authentication of user's access to mobile network between X-MAG and the 3GPP HSS/AAA.

14. method according to claim 9 is characterized in that, and UE inserts/and when being attached to the mobile network, the mutual control information of said UE and mobile network specifically comprises:

A1.UE is through authentication and obtain fixed network for after self IP address allocated, sets up strategy session via fixed network and "Policy and Charging Rules Function PCRF;

A2.UE sends access/attach request to X-MAG, and to carry fixed network be the UE IP address allocated, and the X-MAG request of receiving is that UE IP address allocated and UE set up incidence relation according to fixed network;

A3. carry out the access authentication of user's access to mobile network based on X-MAG;

A4.X-MAG is mutual as MAG and the P-GW of PMIPv6, and obtaining the 3GPP core net is the UE IP address allocated, and the IP address that obtains is sent to UE;

A5.UE accomplishes data transmit-receive through two IP addresses that obtain.

15. method according to claim 9 is characterized in that, UE is during from mobile network's off-line/attachment removal, and the mutual control information of said UE and mobile network specifically comprises:

When b1.UE needed off-line/attachment removal or deletion PDN to connect, UE sent the request of termination through the Y interface to X-MAG;

B2.X-MAG and P-GW are mutual, and request is removed tunnel binding with P-GW, the IP-CAN session between P-GW dismounting and the PCRF, and the sign of notice 3GPPAAA deletion P-GW;

B3.X-MAG returns to UE through the Y interface and stops replying, and notice UE off-line/attachment removal/PDN connects deletion to be accomplished.

16. method according to claim 9 is characterized in that, when fixed network was switched, the mutual control information of said UE and mobile network specifically comprised UE from the 3GPP Access Network:

When c1.UE decision switches to fixed network, obtain fixed network earlier, and set up strategy session via fixed network and "Policy and Charging Rules Function PCRF for after self IP address allocated;

C2.UE sends access/attach request to X-MAG, and to carry fixed network be the UE IP address allocated, and the X-MAG request of receiving is that UE IP address allocated and UE set up incidence relation according to fixed network;

C3. carry out the access authentication of user's access to mobile network based on X-MAG;

C4.X-MAG is mutual as MAG and the P-GW of PMIPv6, and obtaining the 3GPP core net is the UE IP address allocated, and the IP address that obtains is sent to UE;

C5.P-GW initiates 3GPP access network resource deexcitation flow process.

17. method according to claim 9 is characterized in that, when UE set up the connection of additional packet data network, the mutual control information of said UE and mobile network specifically comprised:

When d1.UE need add the PDN connection, send PPP NCP configuring request, carry out PPP NCP with X-MAG and consult to X-MAG;

After d2.X-MAG received the PPP NCP configuring request of UE transmission, obtaining fixed network was the UE IP address allocated;

D3.X-MAG is mutual as MAG and the P-GW of PMIPv6, the tunnel binding of request and P-GW, and obtaining the 3GPP core net is the UE IP address allocated;

D4.X-MAG accomplishes PPP NCP through Y interface and UE and consults, and replys sending to UE through PPP NCP configuration.

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