CN101854734B

CN101854734B - Method, device, strategic control entity and system for releasing switch-in connection

Info

Publication number: CN101854734B
Application number: CN 200910152054
Authority: CN
Inventors: 胡颖; 王珊珊; 张艳平; 吴问付
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2009-03-30
Filing date: 2009-07-28
Publication date: 2013-08-28
Anticipated expiration: 2029-07-28
Also published as: WO2010111944A1; CN101854734A

Abstract

The embodiment of the invention discloses a method, a device, a strategic control entity and a system for releasing a switch-in connection. The method comprises the following steps: a switch-in connection release indication is received by a data gateway, wherein the the switch-in connection release indication is used for indicating to release switch-in connection of a corresponding user terminal through a switch-in network; and the switch-in connection of the user terminal through the switch-in network is released by the data gateway according to the switch-in connection release indication. The embodiment of the invention can specifically indicate the released objects to certain or some switch-in connection (s), thus directly releasing the indicated switch-in connection, and solving the problem that a plurality of switch-in connections corresponding to the data connection can not be released in the prior art.

Description

Discharge method, device, policy control entity and the system that connects that insert

Technical field

The present invention relates to communication technical field, relate in particular to a kind of method, device, policy control entity and system that connects that insert that in multi-access systems, discharge.

Background technology

Connect moving (the Multi Access PDN Connectivity and IPflow mobility that drifts with IP at the PDN of multiple access, MAPIM) in the multi-access systems in the networking, user terminal can connect data gateway by a plurality of Access Networks, thereby inserts data network.In the multi-access technology, user terminal can insert a plurality of dissimilar Access Networks simultaneously, setting up a plurality of accesses connects, described access connects the connection that refers to that user terminal arrives data gateway by Access Network, and this connects and is used for user terminal by the user data of data gateway transmitting-receiving visit data net.For example: insert WLAN (wireless local area network) (Wireless Local AreaNetwork simultaneously, WLAN) network and Long Term Evolution (Long Term Evolution, LTE) network, and these two are inserted connection and share same data connection (IP connection, be IP-CAN Session, or PDN Connection), namely the user data of this data connection can insert the arbitrary forwardings of connection by these two.For better business experience is provided, different business stream has different service quality QoS requirements, can be according to different radio access network characteristics, make the same data of the portable terminal different business stream in connecting by different wireless network transmissions, obtain better QoS assurance.

In the prior art, data connect an only corresponding access connection, and they are to set up together, discharge together.Use prior art when user terminal or/and network element initiates to discharge one when connecting, data gateway can discharge IP and connect, if user terminal or/and network element when only needing to discharge in a plurality of accesses connections certain, will lead to errors.

From said process as can be seen, the method that this release data of prior art connect can not be applied in the multi-access systems, because in the network of supporting the MAPIM technology, data of user terminal connect can share a plurality of accesses connections simultaneously, use existing data connection switchover method, just can't connect corresponding a plurality of accesses connections to data and discharge.

Summary of the invention

The embodiment of the invention provides method, device, policy control entity and the system that connects that insert that discharge, can't connect the problem that corresponding a plurality of accesses connections discharge to data to solve in the prior art, further, can also guarantee the continuity of Business Stream.

For solving the problems of the technologies described above, the embodiment of the invention provides a kind of release in multi-access systems to insert the method that connects, and comprising:

The data gateway reception inserts and connects the release indication, and described access connection discharges indication and is used to indicate the corresponding user terminal of release by the access connection of Access Network;

Connect the release indication according to described access, data gateway discharges described user terminal by the access connection of Access Network.

The embodiment of the invention provides a kind of release in multi-access systems to insert the device that connects, and comprising:

First receiver module is used for reception and inserts connection release indication, and described access connection discharges to indicate and is used to indicate the corresponding user terminal of release by the access connection of Access Network;

First release module discharges indication for connecting according to described access, discharges described user terminal by the access connection of Access Network.

The embodiment of the invention provides a kind of policy control entity, comprising:

The 3rd receiver module is used for receiving the access information renewal indication that data gateway sends;

Second update module is used for upgrading indication according to the described access information of institute, upgrades the Access Network information that user terminal inserts.

The embodiment of the invention provides a kind of release in multi-access systems to insert the system that connects, and comprising:

Discharge and insert jockey, be used for receiving inserting to connect and discharge indication, described access connection discharges indication and is used to indicate the corresponding user terminal of release by the access connection of Access Network, connect the release indication according to described access, discharge described user terminal by the access connection of Access Network, and send access information renewal indication to policy control entity;

Policy control entity is used for upgrading indication according to described access information, upgrades the Access Network information that user terminal inserts.

The embodiment of the invention also provides a kind of release in multi-access systems to insert the method that connects, and comprising:

Data gateway receives data connection release indication, and described data connect to discharge indicates the data that are used to indicate the corresponding user terminal access data network of release to connect;

Discharge indication according to described data connection, data gateway discharges each corresponding access of described data connection and connects.

The embodiment of the invention also provides a kind of release in multi-access systems to insert the device that connects, and comprising:

The 4th receiver module is used for receiving data connection release indication, and described data connect to discharge indicates the data that are used to indicate the corresponding user terminal access data network of release to connect;

Second release module is used for discharging indication according to described data connection, discharges each corresponding access of described data connection and connects.

The embodiment of the invention also provides a kind of release in multi-access systems to insert the system that connects, and comprising:

Discharge data connection device, be used for receiving data connection release indication, described data connect to discharge indicates the data that are used to indicate the described user terminal access data network of release to connect; And according to described data connection release indication, to the IAD transmission release connection request of described data gateway correspondence;

IAD is used for according to described release connection request, discharge with described user terminal between access be connected.

The embodiment of the invention has the following advantages:

In embodiments of the present invention, the access that sends to data gateway by user terminal or network element connects the release indication, and described access connection discharges indication and is used to indicate the release user terminal by the access connection of Access Network; Connect the release indication according to described access, discharge user terminal by data gateway and be connected with the access of IAD.As can be seen, report the mode that discharges indication that connects that inserts by user terminal to data gateway, the object that discharges specifically can be indicated to certain or some accesses connects, thereby the access that directly discharges indication connects, and can't connect the problem that corresponding a plurality of accesses connections discharge to data with regard to having solved in the prior art.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is that the present invention discharges the networking schematic diagram that inserts MAPIM among the method embodiment one that connects in multi-access systems;

Fig. 2 is the flow chart that inserts the method embodiment one that connects that discharges in multi-access systems of the present invention;

Fig. 3 flow chart that inserts the method embodiment two that connects that in multi-access systems, discharges of the present invention;

Fig. 4 is the flow chart that inserts the method embodiment three that connects that discharges in multi-access systems of the present invention;

Fig. 5 is the structural representation that inserts the device embodiment one that connects that discharges in multi-access systems of the present invention;

Fig. 6 is the structural representation that inserts the device embodiment two that connects that discharges in multi-access systems of the present invention;

Fig. 7 is the structural representation of the embodiment one of a kind of policy control entity of the present invention;

Fig. 8 is the structural representation of the embodiment two of a kind of policy control entity of the present invention;

Fig. 9 is the structural representation that inserts the system embodiment one that connects that discharges in multi-access systems of the present invention;

Figure 10 is the structural representation that inserts the system embodiment two that connects that discharges in multi-access systems of the present invention;

Figure 11 is the flow chart that inserts the method embodiment four that connects that discharges in multi-access systems of the present invention;

Figure 12 is the flow chart that inserts the method embodiment five that connects that discharges in multi-access systems of the present invention;

Figure 13 is the structural representation that inserts the device embodiment three that connects that discharges in multi-access systems of the present invention;

Figure 14 is the structural representation that inserts the device embodiment four that connects that discharges in multi-access systems of the present invention;

Figure 15 is the structural representation that inserts the system embodiment three that connects that discharges in multi-access systems of the present invention;

Figure 16 is the structural representation that inserts the system embodiment three that connects that discharges in multi-access systems of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

For above-mentioned purpose, the feature and advantage that make the embodiment of the invention can become apparent more, below in conjunction with the drawings and specific embodiments the embodiment of the invention is described in further detail.

In the network of supporting multiple access, suppose that two accesses that user terminal has been set up in advance by Access Network 1 and Access Network 2 in the embodiment of the invention one are connected, two accesses connect and all are used for the same data network of visit, and corresponding same data connect, can be with reference to shown in Figure 1; For example, user terminal access Internet network is set up data and is connected, and obtains an IP address, and the while user terminal has been set up an access respectively at wlan network and LTE network and has been connected the information that connects for these data of transmitting-receiving; User terminal or network can be according to the different service quality qos requirements of data traffic flow, user, operator's preference, and perhaps the ability to bear of each gateway etc. is that data traffic flow selects suitable access to connect; For example, selecting the access of wlan network for the business datum of the web page browsing of user terminal and connect, be that (Voice overIP, data VoIP) are selected the access connection of LTE network for the ip voice business of user terminal simultaneously.

With reference to figure 2, in the embodiment of the invention one, realize that the method that the embodiment of the invention one provides can may further comprise the steps:

Step 201: the data gateway reception inserts and connects the release indication, and described access connection discharges indication and is used to indicate the corresponding user terminal of release by the access connection of Access Network;

In the present embodiment, along with the business of user terminal changes or move etc. the position, the required access of user terminal connects and may change; For example, user terminal location moves, the area of coverage that has exceeded wlan network, then the user need discharge the access connection of Access Network 1, at this moment, user terminal then inserts to the data gateway transmission and connects the release indication, and described access connection discharges indication and is used to indicate the described user terminal of release by the access connection of Access Network; Described access is connected to from user terminal, through IAD, to the data transmission channel of data gateway; When IAD or mobile management entity detected user terminal and leave Access Network, IAD or mobile management entity sent to insert to connect to data gateway and discharge indication; User's authorization message changes, when no longer permission inserts current Access Network, IAD, mobile management entity or certification authority server (Authentication, Authorization and Accounting, AAA Server) send to insert to connect to data gateway and discharge indication;

Described access connects the concrete indicating means that discharges indication, and comprise following at least a: insert connection identifier, insert connection type, Access Network sign, access network type information and positional information, the access of distinguishing different Access Networks connects; Can adopt the connection release type to distinguish and discharge to insert to connect still to discharge the data connection, namely indicate to discharge and insert when connecting, the connection release type is to insert to connect; Need to prove, can indicate and d/d access to connect by inserting connection release indication, also the access connection that indicates can be kept, and the access that will not indicate connection discharge, difference according to the actual requirements can have different indicating means; For example: the access that described access network type is used to refer to deletion the type connects, described access connection identifier is used to refer to the corresponding access of this sign of deletion and connects, certainly which access connection can also adopt additive method also to indicate needs to discharge, for example: can insert connect with certain need to discharge, and perhaps certain inserts and connects the mode that needs to keep and represent to discharge still to keep to insert and connect; Perhaps, discharge access that the access connection identifier that comprises in the indication is used to refer to this connection identifier correspondence and connect and continue to keep available when described access connects, access in addition connects and then discharges; This access connect discharge indication can be by mobile IP binding update messages (MIP Binding Update), switch message, go connection message to be sent to data gateway, also can increase a message newly, comprise this access in this message and connect the release indication, perhaps, send data gateway to by the 3rd network element, for example, user terminal sends to access network discovery and selection functional entity, and (Access Network Discovery and SelectionFunction ANDSF) is transmitted to data gateway again;

Step 202: connect the release indication according to described access, data gateway discharges described user terminal by the access connection of Access Network.

Data gateway connects the access that discharges the indication correspondence according to described access and connects, and described access by Access Network is connected discharge.In the present embodiment, then be that original user terminal inserts connection (Access Network 1 and Access Network 2) access data network by two, namely be two and insert the corresponding data connection of connection, after the access that discharges Access Network 1 connects, then user terminal only connects (Access Network 2) access data network by an access, and namely one is inserted a data connection that connects (Access Network 2) respective user.Wherein, described access connects according to different Access Networks, can be that different tunnels connects, for example, third generation partner program (3rd Generation PartnershipProject, 3GPP) the GTP tunnel of network (GPRS Tunnel Protocol, GTP) tunnel, grouping system (Evolved Packet System of future generation, EPS) carrying, the IP Security Protocol of wlan network (IP Security Protocol, IPsec) tunnel or MIP tunnel, worldwide interoperability for microwave inserts (Worldwide Interoperability for Microwave Access, WiMax) data path of network (Data path), the non-3GPP access technology of EPS (non-3GPP, N3G) proxy-mobile IP (Proxy Mobile IP, PMIP) v6 generic route encapsulation (Generic RoutingEncapsulation, GRE) tunnel, two stacks move IP (Dual-Stack Mobile IP, DSMIP) v6 tunnel, mobile IPv 4 (Mobile IP version 6, MIPv4) tunnel, etc., described data connect and namely refer to certain message data network of user terminal access (Packet Data Network, PDN) connection, for example: IP connects, two stack IP connect, PDN connects, the connection of IP data (IPConnectivity Access Network, IP-CAN) etc.

Need to prove, though adopt two situations that insert the corresponding data connection of connection to describe in the present embodiment, but those skilled in the art can also be applied to the method for present embodiment data connects the situation that the individual access of corresponding M (M＞2) connects, and namely is to discharge the wherein individual access connection of N (N＞1); Concrete, can be to insert to have comprised in the connection release indication to discharge N information that inserts connection, also can repeat above-mentioned steps and finish the dispose procedure that N access connected.Certainly, the described method of present embodiment also can be applied to the release of a plurality of data connections of same user terminal, be that user terminal passes through a data gateway and set up a plurality of data and connect, these a plurality of data connections use identical access to connect, and then data gateway can be applied to this a plurality of data connections with inserting the method for releasing that connects in the present embodiment.Wherein, the access network element of described IAD correspondence can for, the gateway of 3GPP network (Serving GW), GPRS supporting node (Serving GPRS Support Node, SGSN); The access service network gateway of WiMax network (Access Services Network Gateway, ASN GW); The message gateway of the IAD of wlan network, evolution (Evolved Packet Data Gateway, ePDG), the WLAN IAD (WLAN Access Gateway, WAG); 3GPP2 grouping of network data serving node gateway (Packet Data Serving Node Gateway, PDSN GW), high-speed grouped data network IAD (High Rate Packed Data Access Network Gateway, HRPD ANGW), the high-speed grouped data network gateway (HRPD Serving Gateway, HSGW) etc.The data network element of data gateway correspondence can be, and Gateway GPRS Support Node (Gateway GPRSSupport Node, GGSN), packet data network gateway (Packet Data Network Gateway, PDN GW) etc.The policy control entity corresponding net element can be, strategy and charging rule decision functional entity (Policy and Charging Rule Function, PCRF), policy deciding functional entity (Policy Decision Functio, PDF) etc.

In the present embodiment, as can be seen, by connecting the mode that discharges indication by user terminal or/and network element sends access to data gateway, can further connect corresponding a plurality of accesses connections to data discharges, this can't discharge the problem that each access connects in the multi-access systems with regard to having solved the method for using prior art, thereby work as user terminal under the multiple access situation, more each of new data connection inserts the upstate that connects; And, when network element detects user terminal and leaves Access Network, also can send data and discharge connection, this just makes network can learn the access situation of user terminal timely, can judge correctly that also the used access of business data transmission connects, can not cause losing of data, improve the transmission performance of network data.

With reference to figure 3, in the embodiment of the invention two, realize that the method that the embodiment of the invention two provides can may further comprise the steps:

Step 301: the access that data gateway reception network element sends connects the release indication, and described access connection discharges indication and is used to indicate the corresponding user terminal of release by the access connection of Access Network;

Wherein, the concrete indicating means of described access connection release indication can be referring to the detailed description among the embodiment one;

Described network element can comprise IAD, mobile management entity or certification authority server; At this moment, corresponding user terminal is that described access connects corresponding user terminal;

Step 302: connect the release indication according to described access, data gateway discharges the access connection request to connecting corresponding IAD transmission with described access;

In the present embodiment, when data gateway received that described access connection discharges indication, the access of indicating the needs shown in the indication to discharge according to described access connection release connected, to the IAD transmission release access connection request of correspondence;

Step 303: data gateway sends access information to policy control entity and upgrades indication;

Described access information upgrades indication can be used to indicate the Access Network information that policy control entity renewal user terminal inserts, and discharges the access of one of them Access Network comprising indication; In the present embodiment, described data gateway also upgrades to policy control entity transmission access information and indicates after receiving that inserting connection discharges indication; This indication can inform that policy control entity which or which insert to connect and be released, and namely is that the access with user terminal connects d/d information notification policy control entity; Policy control entity upgrades the Access Network information that user terminal inserts according to the indication of this message, comprises that the described access information of deletion upgrades the user terminal of indication by the information of Access Network access; For example, original policy control entity has recorded user terminal and has inserted from Access Network 1 and Access Network 2, after the access of receiving Access Network 1 connects d/d indication, policy control entity deletion user terminal namely is updated to the information that user terminal inserts from Access Network 2 from the information (can comprise the access style information of Access Network 1, the positional information of Access Network 1 etc.) that Access Network 1 inserts; The concrete indicating means of described access information updating message, can comprise following at least a: insert connection identifier, Access Network sign, access network type information and positional information etc., distinguish the access of different Access Networks, also can insert connection with some and be released, perhaps some access connection reservation waits to distinguish and discharges or reservation access connection; For example, the release that data gateway sends inserts link information, comprise available access style tabulation and be used for representing that the access connection of access style correspondence in addition is released, the access connection identifier that perhaps comprises release is used for the corresponding access connection of this sign of expression and is released, the IAD sign that perhaps comprises release is used for representing that the access connection of this sign correspondence is released, and the access connection that perhaps comprises this sign correspondence of Access Network sign indication of release is released;

Concrete, described access information upgrades indication can be included in strategy session updating message (Indication of IP-CAN Session modification), perhaps in the Diameter session updates message (Diameter Credit Control Request);

Need to prove, this step and step 304, perhaps there is not strict precedence relationship with step 305, in the present embodiment, for easy description, the content choice of this step received to insert to connect when discharging indication to send to discharge to policy control entity at data gateway insert link information;

Step 304: described IAD inserts connection request according to described release, and the access that discharges described user terminal connects;

Described IAD inserts connection request according to described release, and the access that discharges user terminal connects; For example, IAD discharge and user terminal between the EPS carrying, perhaps IAD discharge with user terminal between local IP is connected, the perhaps IPsec tunnel between IAD release and user terminal, etc.;

Step 305: data gateway receives the release access connection response message that described IAD sends;

Described IAD can also send to discharge and insert the connection response message after discharging successfully to data gateway;

Step 306: data gateway receives policy control entity and upgrades indication according to described access information, to first policy control information that data gateway sends, described first policy control information is used to indicate other available accesses connections that data gateway switches to the Business Stream of the access connection of described release current data connection correspondence;

Policy control entity receives to discharge and inserts after the link information, send first policy control information to data gateway, described first policy control information is used to indicate other available accesses connections that data gateway switches to the Business Stream of the access connection of described release current data connection correspondence, can indicate the more routing iinformation of new service flow, comprise original access in described release is connected other available accesses connection transmission that the Business Stream that transmits switches to current data connection correspondence;

Step 307: data gateway upgrades the carrying that described other available accesses connect according to described first policy control information.

Wherein, the renewal of data gateway operation is specially:

Data gateway sends to described available IAD and upgrades beared information, and described other available accesses connect the carrying between renewal and the user terminal.

When using the on-path pattern, be that data gateway has bearing binding and strategy and charges enhancing function (Policy and Charging Enforcement Function, PCEF) time, data gateway is according to first policy control information that receives, upgrade the carrying that described other available accesses connect, can comprise newly-built, revise or delete the carrying that corresponding access connects, in the present embodiment, data gateway can also adopt to described available IAD and send the mode of upgrading beared information, and described other available accesses connect according to the carrying of upgrading between beared information renewal and the user terminal.

Need to prove, when using the off-path pattern, be that IAD is when having bearing binding function (Bearer Binding Function) or policy enforcement function, in inserting the establishment of connection process before, set up the policy control session between IAD and the policy control entity, for example, Gateway Control Session or Gxx Session, then send second policy control information by policy control entity to described other available IADs (for example IAD 2), the policy control entity decision-making changes to Access Network 2 transmission to the original users terminal at the Business Stream of Access Network 1 transmission, and according to the characteristic of this Business Stream information and Access Network 2, corresponding second policy control information of making a strategic decision out, and be sent to described other available IADs; At this moment, data gateway only upgrades the policy control rule of self preserving according to first policy control information that receives, and no longer sends and upgrades beared information to IAD.

In the present embodiment, by data gateway receive insert to connect discharge indication after, send release to IAD and insert connection request, again by IAD discharge with user terminal between access be connected, and in the present embodiment, can also further issue first policy control information by policy control entity, be used to indicate user terminal loaded service stream on d/d access connects is updated to other available accesses connection transmission, not only can connect corresponding a plurality of accesses connections to data and discharge, can also guarantee the continuity of Business Stream when release certain or some access connects.

With reference to figure 4, in the embodiment of the invention three, realize that the method that the embodiment of the invention three provides can may further comprise the steps:

Step 401: the access that IAD reception user terminal sends connects the release indication, and described access connection discharges indication and is used to indicate the described user terminal of release by the access connection of IAD 1;

In the present embodiment, described access connection discharges indication is sent to access connection correspondence by user terminal IAD; For example, for the 3GPP Access Network, insert to connect discharge indication by user terminal send to mobile management entity (Mobility Management Entity, MME), MME is transmitted to IAD, for example Serving GW; Perhaps for the non-3GPP Access Network, insert connection release indication and send to IAD by user terminal, for example ePDG.Described access connects and discharges indication and can adopt and connect release type and distinguish to discharge to insert to connect and still discharge data and connect, i.e. indication discharges and inserts when connecting, and connects release type and connects for inserting; Suppose in the present embodiment that user terminal inserts same data by Access Network 1 with Access Network 2 respectively and is connected, and described access connects and discharges indication and be used to indicate and discharge described user terminal by the access connection of IAD 1;

Step 402: data gateway receives the access connection release indication that described IAD 1 sends;

The access that IAD 1 sends user terminal again connects to discharge indicates the data gateway that is forwarded to correspondence;

Step 403: data gateway sends access information to policy control entity and upgrades indication;

Described access information upgrades the description of indicating can be with reference to the record in embodiment two; Need to prove, this step and step 404, perhaps there is not strict precedence relationship with step 405, in the present embodiment, for easy description, the content choice of this step received to insert to connect when discharging indication to send to discharge to policy control entity at data gateway insert link information;

Step 404: connect the release indication according to described access, data gateway discharges described user terminal and connects by the access between the IAD 1;

When data gateway connected the release indication in the access that receives IAD 1 transmission, data gateway discharged described user terminal and connects by the access between the described IAD 1;

Step 405: policy control entity upgrades indication according to described access information, send second policy control information to described available IAD, described second policy control information is used to indicate described other available IADs and upgrades the carrying that corresponding available access connects;

When using the off-path pattern, be that IAD is when having bearing binding function (Bearer BindingFunction) or policy enforcement function, in inserting the establishment of connection process before, set up the policy control session between IAD and the policy control entity, for example, Gateway ControlSession or Gxx Session, then send second policy control information by policy control entity to described other available IADs (for example IAD 2), policy control entity changes to Access Network 2 transmission to the original users terminal at the Business Stream of Access Network 1 transmission, and according to the characteristic of this Business Stream information and Access Network 2, generate corresponding second policy control information, and be sent to described other available IADs;

Need to prove, when using the on-path pattern, be that data gateway has bearing binding and strategy and charges enhancing function (Policy and Charging Enforcement Function, PCEF) time, data gateway is according to first policy control information that receives, new bearer more, can comprise carrying newly-built, that revise or delete corresponding access connection, can also adopt data gateway to send the mode of upgrading beared information to described available IAD, and described other available accesses connect according to the carrying of upgrading between beared information renewal and the user terminal; At this moment, policy control entity and described other available IADs are not set up the policy control session, and policy control entity does not send described second policy control information to described other available IADs yet;

Step 406: described available IAD is according to the carrying between described second policy control information renewal and the user terminal.

Described available IAD is according to the carrying between described second policy control information renewal and the user terminal, for example: IAD 2 newly-built carryings, perhaps IAD 2 upgrades bandwidth or other QoS attributes of existing some carrying, is used for the Business Stream of former Access Network 1 transmission of transmission.

In the present embodiment, user terminal has the corresponding data of two access connections (respectively by Access Network 1 and Access Network 2) to be connected at the beginning, then one of them is inserted and connect (Access Network 1) release, and former access is connected the Business Stream of going up transmission be updated to another and insert and connect (Access Network 2), then the data of this user terminal connect just only corresponding one insert and connect.Described access connects according to different Access Networks, can be that different tunnels connects, the write up in the concrete reference example one.In the present embodiment, directly connect other corresponding available IADs to data by policy control entity and send second policy control information, thereby by the carrying of this available IAD renewal with user terminal, thereby can be when discharging the access connection, also can guarantee the continuity of Business Stream, improve the transmission performance of network data.

Corresponding with the method that the invention described above embodiment provides, referring to Fig. 5, the embodiment of the invention also provides a kind of structural representation that inserts the device embodiment that connects that discharges in multi-access systems, and described device specifically can comprise:

First receiver module 501 is used for reception and inserts connection release indication, and described access connection discharges to indicate and is used to indicate the corresponding user terminal of release by the access connection of Access Network;

The described device of present embodiment can be integrated on the data gateway, can also directly adopt data gateway to realize; In the present embodiment, along with the business of user terminal changes or move etc. the position, the required access of user terminal connects and may change; Suppose that user terminal location moves, the area of coverage that has exceeded wlan network, then the user need discharge the access connection of Access Network 1, at this moment, the access that is sent by described first receiver module, 501 reception user terminals connects the release indication, and described access connection discharges indication and is used to indicate the described user terminal of release by the access connection of Access Network; Described access is connected to from user terminal, through IAD, to the data transmission channel of data gateway;

Wherein, described first receiver module 501 specifically can be used for receiving user terminal and discharge indication or/and the access that network element sends connects; Perhaps, receive access that user terminal sends by IAD and connect and discharge indication, described access connects and discharges indication and be used to indicate and discharge described user terminal and be connected with access between the IAD; Perhaps, receive the access connection release indication of at least one transmission in the following equipment: IAD, mobile management entity and certification authority server.

Described access connects the concrete indicating means that discharges indication, can adopt and insert connection identifier, insert connection type, Access Network sign, access network type information or positional information, and the access of distinguishing different Access Networks connects; The access that described access network type is used to refer to deletion the type connects, described access connection identifier is used to refer to the corresponding access of this sign of deletion and connects, certainly which access connection can also adopt additive method also to indicate needs to discharge, for example: can insert connect with certain need to discharge, and perhaps certain inserts and connects the mode that needs to keep and represent to discharge still to keep to insert and connect; Perhaps, discharge access that the access connection identifier that comprises in the indication is used to refer to this connection identifier correspondence and connect and continue to keep available when described access connects, access in addition connects and then discharges; This access connect discharge indication can be by mobile IP binding update messages (MIP BindingUpdate), switch message, go connection message to be sent to data gateway, also can increase a message newly, should newly-increased message comprise this access connection release indication, perhaps, send data gateway to by the 3rd network element, for example, user terminal sends to access network discovery and selection functional entity, and (AccessNetwork Discovery and Selection Function ANDSF) is transmitted to data gateway again;

First release module 502 discharges indication for connecting according to described access, discharges described user terminal by the access connection of Access Network.

In the present embodiment, described first release module 502 connects the access that discharges the indication correspondence according to described access and connects, and described access by Access Network is connected discharge.Wherein, described access connects according to different Access Networks, can be that different tunnels connects, for example, the GTP tunnel of 3GPP network, EPS carrying, the IPsec tunnel of wlan network or MIP tunnel, the data path of WiMax network (Data path), the PMIPv6GRE tunnel of EPS N3G, DSMIPv6 tunnel, MIPv4 tunnel, etc., described data connect the connection that namely refers to certain data network PDN of user terminal access, for example: IP connection, two stack IP connection, PDN connection, IP-CAN etc.

Need to prove, though adopt two situations that insert the corresponding data connection of connection to describe in the present embodiment, but those skilled in the art can also be applied to the method for present embodiment data connects the situation that the individual access of corresponding M (M＞2) connects, and namely is to discharge the wherein individual access connection of N (N＞1); Concrete, can be to insert to have comprised in the connection release indication to discharge N information that inserts connection, also can repeat above-mentioned steps and finish the dispose procedure that N access connected.Certainly, the described method of present embodiment also can be applied to the release of a plurality of data connections of same user terminal, be that user terminal passes through a data gateway and set up a plurality of data and connect, these a plurality of data connect uses identical access to connect, and then the releasing device that inserts connection in the present embodiment can also be applied to these a plurality of data and connect.Wherein, the access network element of described IAD correspondence can for, the gateway of 3GPP network (Serving GW), GPRS supporting node (Serving GPRS Support Node, SGSN); Worldwide interoperability for microwave inserts (WorldwideInteroperability for Microwave Access, WiMax) access service network gateway of network (Access Services Network Gateway, ASN GW); The message gateway of the IAD of wlan network, evolution (Evolved Packet Data Gateway, ePDG), the WLAN IAD (WLAN Access Gateway, WAG); The PDSN GW of 3GPP2 network, HRPD ANGW, HSGW etc.The described device of present embodiment can be integrated on the data gateway, wherein, the data network element of described data gateway correspondence can be, Gateway GPRS Support Node (Gateway GPRSSupport Node, GGSN), packet data network gateway (Packet Data Network Gateway, PDN GW) etc.The policy control entity corresponding net element can be, strategy and charging rule decision functional entity (Policy and Charging Rule Function, PCRF), policy deciding functional entity (Policy Decision Functio, PDF) etc.

In the present embodiment, as can be seen, connect the release indication by the access that is sent by user terminal, can connect corresponding a plurality of accesses connections by 502 pairs of data of described first release module discharges, this can't discharge the problem that each access connects in the multi-access systems with regard to having solved the method for using prior art, thereby work as user terminal under the multiple access situation, more each of new data connection inserts the upstate that connects.This just makes network can learn the access situation of user terminal timely, can judge correctly that also the used access of business data transmission connects, and can not cause losing of data, has improved the transmission performance of network data.

Corresponding with the inventive method embodiment two, with reference to shown in Figure 6, show the structural representation of apparatus of the present invention embodiment two, as shown in the figure, this device can comprise:

First receiver module 601 is used for the access connection release indication that reception user terminal and/or network element send, and described access connection discharges to indicate and is used to indicate the corresponding user terminal of release by the access connection of Access Network;

Concrete, when at first having sent this access to the IAD of correspondence, user terminal connects when discharging indication, described first receiver module 601, concrete being used for discharges indication by the access connection that IAD reception user terminal sends, and described access connection discharges to indicate to be used to indicate and discharges described user terminal by the access connection of Access Network;

First sending module 602 is used for sending access information to policy control entity and upgrades indication;

Need to prove that described first sending module 602 also can be between described first release module 603 and second receiver module 604, perhaps between second receiver module 604 and the 3rd receiver module 605; Wherein, described access information upgrades the Access Network information that policy control entity renewal user terminal inserts that is used to indicate of indicating;

First release module 603 is used for connecting the release indication according to described access, sends to the IAD corresponding with described access connection to discharge the access connection request;

Wherein, described release access connection request can indicate described IAD to discharge the access connection of described user terminal;

Second receiver module 604, be used for receiving policy control entity and upgrade indication according to described access information, to first policy control information that data gateway sends, described first policy control information is used to indicate other available accesses connections that data gateway switches to the Business Stream of the access connection of described release current data connection correspondence;

Policy control entity receives access information and upgrades after the indication, send first policy control information to data gateway, received by described second receiver module 604, described first policy control information is used to indicate other available accesses connections that data gateway switches to the Business Stream of the access connection of described release current data connection correspondence; Policy control entity will be deleted the access link information of d/d Access Network, if this Access Network has professional transmission, then the original users terminal is changed to other available accesses connections that current data connects correspondence at the Business Stream of this Access Network transmission, can indicate the more routing iinformation of new service flow, comprise original access in described release is connected other available accesses connection transmission that the Business Stream that transmits switches to current data connection correspondence;

First update module 605 is used for upgrading the carrying that described other available accesses connect according to described first policy control information.

When using the on-path pattern, be that data gateway has bearing binding and strategy and charges enhancing function (Policy and Charging Enforcement Function, PCEF) time, described second sending module 606 is according to first policy control information that receives, upgrade the carrying that described other available accesses connect, can be by connecting a newly-built carrying for the mode of the Business Stream of the access connection of the described release of transmission in described other available accesses, also can upgrade the carrying that described other available accesses connect in other way, can also adopt data gateway to send the mode of upgrading beared information to described available IAD, by the carrying between described other available accesses connection renewals and the user terminal.

Need to prove, when using the off-path pattern, be that IAD is when having bearing binding function (Bearer Binding Function) or policy enforcement function, in inserting the establishment of connection process before, set up the policy control session between IAD and the policy control entity, for example, Gateway Control Session or Gxx Session, then send second policy control information by policy control entity to described other available IADs (for example IAD 2), the policy control entity decision-making changes to Access Network 2 transmission to the original users terminal at the Business Stream of Access Network 1 transmission, and according to the characteristic of this Business Stream information and Access Network 2, corresponding second policy control information of making a strategic decision out, and be sent to described other available IADs.

In the present embodiment, can also further issue first policy control information to described second receiver module 604 by policy control entity, be used to indicate user terminal loaded service stream on d/d access connects is updated to other available accesses connection transmission, not only can connect corresponding a plurality of accesses connections to data and discharge, can also guarantee the continuity of Business Stream when release certain or some access connects.

The embodiment of the invention also provides a kind of policy control entity, and with reference to shown in Figure 7, this policy control entity specifically can comprise:

The 3rd receiver module 701 is used for receiving the access information renewal indication that data gateway sends;

Wherein, described access information upgrades indication can be used to indicate the Access Network information that policy control entity renewal user terminal inserts, and discharges the access of one of them Access Network comprising indication; In the present embodiment, described data gateway also upgrades to policy control entity transmission access information and indicates after receiving that inserting connection discharges indication; This message can inform that policy control entity which or which insert to connect and be released, and namely is that the access with user terminal connects d/d information notification policy control entity;

Described access information upgrades the concrete indicating means of indication, at least comprise following a kind of: insert connection identifier, Access Network sign, access network type information and positional information, distinguish the access of different Access Networks, also can insert connection with some and be released, perhaps some access connection reservation waits to distinguish and discharges or reservation access connection; For example, the release that data gateway sends inserts link information, comprise available access style tabulation and be used for representing that the access connection of access style correspondence in addition is released, the access connection identifier that perhaps comprises release is used for the corresponding access connection of this sign of expression and is released, the IAD sign that perhaps comprises release is used for representing that the access connection of this sign correspondence is released, and the access connection that perhaps comprises this sign correspondence of Access Network sign indication of release is released;

Second update module 702 is used for upgrading indication according to the described access information of institute, upgrades the Access Network information that user terminal inserts;

Policy control entity upgrades the Access Network information that user terminal inserts according to the indication of this message, comprises that the described access of deletion connects the information that the user terminal that discharges indication inserts by Access Network; For example, original policy control entity has recorded user terminal and has inserted from Access Network 1 and Access Network 2, after the access of receiving Access Network 1 connects d/d indication, policy control entity deletion user terminal namely is updated to the information that user terminal inserts from Access Network 2 from the information (can comprise the access style information of Access Network 1, the positional information of Access Network 1 etc.) that Access Network 1 inserts.

Further, the embodiment of the invention can also comprise:

Second sending module 703, for sending first policy control information according to described access information renewal indication to data gateway, described first policy control information is used to indicate other available accesses connections that data gateway switches to the Business Stream of the access connection of described release current data connection correspondence.

When using the on-path pattern, be that data gateway has bearing binding and strategy and charges enhancing function (Policy and Charging Enforcement Function, PCEF) time, data gateway is according to first policy control information that receives, upgrade the carrying that described other available accesses connect, can comprise newly-built, revise or delete corresponding carrying, for example, can be by connecting a newly-built carrying for the mode of the Business Stream of the access connection of the described release of transmission in described other available accesses, certainly, also can upgrade the carrying that described other available accesses connect in other way, can also send to described available IAD and upgrade beared information, by the carrying between described other available IADs renewals and the user terminal;

Policy control entity receives to discharge and inserts after the link information, send first policy control information by described second sending module 703 to data gateway, the Business Stream that described first policy control information is used to indicate the access connection of described release switches to other available accesses connections that current data connects correspondence, can indicate the more routing iinformation of new service flow, comprise original access in described release is connected other available accesses connection transmission that the Business Stream that transmits switches to current data connection correspondence.

Perhaps, in another policy control entity embodiment of the present invention, with reference to shown in Figure 8, this policy control entity specifically can comprise: the 3rd receiver module 801, the second update module 802 and the 3rd sending module 803.

Wherein, described the 3rd receiver module 801 is used for receiving the access information renewal indication that data gateway sends;

Described second update module 802 is used for upgrading indication according to the described access information of institute, upgrades the Access Network information that user terminal inserts; Described second sending module 803, be used for upgrading indication according to described access information and send second policy control information to other available IADs that current data connects correspondence, described second policy control information is used to indicate described other available IADs and upgrades the carrying that corresponding available access connects.

When using the off-path pattern, be that IAD is when having bearing binding function (Bearer BindingFunction) or policy enforcement function, in inserting the establishment of connection process before, set up the policy control session between IAD and the policy control entity, for example, Gateway ControlSession or Gxx Session, then send second policy control information by policy control entity to described other available IADs (for example IAD 2), policy control entity changes to Access Network 2 transmission to the original users terminal at the Business Stream of Access Network 1 transmission, and according to the characteristic of this Business Stream information and Access Network 2, generate corresponding second policy control information, and be sent to described other available IADs.

The described policy control entity of present embodiment, can upgrade the access lastest imformation of indication in the indication according to the access information that data gateway sends, upgrade the Access Network information that user terminal inserts, thereby the state of the user terminal that can upgrade in time, guaranteed discharge certain or some insert the continuity of Business Stream when connecting.

Corresponding with the method and apparatus that the invention described above embodiment provides, referring to Fig. 9, the embodiment of the invention also provides a kind of structural representation that inserts the system embodiment that connects that discharges in multi-access systems, and described system specifically can comprise:

Discharge and insert jockey 901, connect to discharge for the reception access and indicate, described access connection release indication is used to indicate and discharges the access connection that corresponding user terminal passes through IAD; And according to described access connection release indication, discharge described user terminal by the access connection of Access Network, and to policy control entity transmission access information renewal indication;

In the present embodiment, described release inserts the carrying that jockey 901 can also be used for upgrading according to first policy control information that policy control entity returns other available accesses connections;

Policy control entity 902 is used for upgrading indication according to described access information, upgrades the Access Network information that user terminal inserts.

In the present embodiment, described policy control entity can also be used for sending first policy control information to data gateway, and described first policy control information is used to indicate other available accesses connections that data gateway switches to the Business Stream of the access connection of described release current data connection correspondence.In the described system of present embodiment, described release inserts jockey 901 and can be integrated on the data gateway, can also further issue first policy control information by policy control entity, be used to indicate user terminal loaded service stream on d/d access connects is updated to other available accesses connection transmission, not only can connect corresponding a plurality of accesses connections to data and discharge, can also guarantee the continuity of Business Stream when release certain or some access connects.

Referring to Figure 10, the embodiment of the invention also provides a kind of structural representation that inserts the system embodiment two that connects that discharges in multi-access systems, and described system specifically can comprise:

Discharge and insert jockey 1001, connect to discharge for the reception access and indicate, described access connection release indication is used to indicate and discharges the access connection that corresponding user terminal passes through Access Network; And according to described access connection release indication, discharge described user terminal by the access connection of Access Network, to policy control entity transmission access information renewal indication.

Policy control entity 1002, be used for upgrading indication according to described access information, upgrade the Access Network information that user terminal inserts, and sending second policy control information to described other available IADs, described second policy control information is used to indicate described other available IADs and upgrades the carrying that described other available accesses connect;

Then described system can also comprise: other available IADs 1003:

Described other available IADs 1003 are used for according to the carrying between described second policy control information renewal and the user terminal.

In the present embodiment, directly connect other corresponding available accesses to data by policy control entity and connect 1003 transmissions, second policy control information, thereby by available gateway renewal of this available connection correspondence and the carrying of user terminal, thereby can be when discharging the access connection, also can guarantee the continuity of Business Stream, improve the transmission performance of network data.

With reference to Figure 11, the embodiment of the invention also provides a kind of flow chart that inserts the method embodiment four that connects that discharges in multi-access systems, and described method specifically can comprise:

Step 1101: data gateway receives data connection release indication, and described data connect to discharge indicates the data that are used to indicate release user terminal access data network to connect;

In the network of supporting multiple access, suppose that two accesses that user terminal has been set up by IAD 1 and IAD 2 are connected, two accesses connect and all are used for the same data network of visit, and corresponding same data connect; For example, user terminal access Internet network is set up data and is connected (IP connection), obtains IP address A, and the while user terminal has been set up an access respectively at wlan network and LTE network and has been connected the data that connect for this IP of transmitting-receiving; User terminal or network can be according to the different QoS requirements of Business Stream, and perhaps the ability of IAD etc. is that the preferred suitable access of data traffic flow connects; For example, for the access of the service selection wlan network of the web page browsing of user terminal connects, for the access of the service selection LTE network of the VoIP of user terminal connects.

Described data gateway can receive by user terminal or by the data that network element sends and connect the release indication; Along with the business variation of user terminal etc., the required data of user terminal connect and may change; For example, the user need discharge certain data connection (for example: user terminal shutdown or certain data network of termination visit); At this moment, user terminal sends data connection release indication to data gateway; And, when user's authorization message changes, when no longer permission inserts the current data network PDN, IAD, mobile management entity or certification authority server (Authentication, Authorization and Accounting, AAA Server) sends data to data gateway and connect the release indication, concrete indicating means can (for example: data network title APN pass through data connection identifier information, the data connection ID, data connect IP etc.), perhaps utilizing data to connect corresponding bearing identification indicates, perhaps distinguish to discharge to insert to connect with the connection release type and still discharge the data connection, when i.e. indication discharged the data connection, connecting release type was data connection etc.;

Step 1102: connect the release indication according to described data, data gateway sends release to each corresponding IAD of described data connection and inserts connection request;

Described data connect corresponding a plurality of access and connect, and then data gateway inserts connection request to the IAD transmission release that described a plurality of accesses connect correspondence; Data gateway can at first send request to an IAD when send to discharge inserting connection request, treat this IAD will insert connect discharge after, again to second request of second IAD transmission; Perhaps, also can send corresponding a plurality of requests to a plurality of IADs simultaneously;

Step 1103: described each IAD is according to described release connection request, discharge with described user terminal between each access be connected.

Described each IAD is according to described release connection request, discharge with described user terminal between each access be connected.Wherein, data connect the connection that namely refers to certain data network PDN of user terminal access, for example: IP connection, two stack IP connection, PDN connection or IP-CAN etc.When the data connection need discharge, data connected each corresponding access connection and all will be released.Insert and connect according to different Access Networks, can be that different tunnels connects, for example, the GTP tunnel of 3GPP network, EPS carrying, the IPsec tunnel of wlan network or MIP tunnel, the data path of WiMax network (Data path), the PMIPv6GRE tunnel of EPS N3G, DSMIPv6 tunnel, MIPv4 tunnel, etc., described data connect the connection that namely refers to certain PDN of user terminal access, for example: IP connection, two stack IP connection, PDN connection, IP-CAN etc.

In the present embodiment, send data connection release indication at user terminal or network element to data gateway, when indication needs to discharge current data connection, data gateway then sends release to each corresponding IAD that inserts connection of current data connection and inserts connection request, each IAD inserts connection request according to described release, then will be connected in succession with each access of user terminal and discharge, thereby the data of correct maintenance customer's terminal can be connected each corresponding access connects, also can make network can learn the access situation of user terminal timely, can judge correctly that also the used access of business data transmission connects, can not cause losing of data, improve the transmission performance of network data.

With reference to Figure 12, the embodiment of the invention also provides a kind of flow chart that inserts the method embodiment five that connects that discharges in multi-access systems, and described method specifically can comprise:

Step 1201: data gateway receives the data connection release indication that user terminal sends by an IAD, and described data connect to discharge indicates the data that are used to indicate release user terminal access data network to connect;

User terminal at first connects one of them corresponding access connection with data connection release indication by described data and is sent on the IAD, by IAD this indication is sent to data gateway again; Data connect the concrete indicating means of release indication with method embodiment four; Suppose that the user is connected by the same data of two access connections (IAD 1 and IAD 2) access in the present embodiment, then user terminal sends this indication information by IAD 1 to data gateway;

Step 1202: according to described data connection release indication, data gateway sends data to policy control entity and connects release information, and described release link information is used to indicate the information of the data connection release of user terminal;

If policy control functions is arranged, then data gateway connects the release indication according to the data of user terminal, sends data to described policy control entity and connects release information, and these data of notification strategy controlled entity connect d/d information; Described data connect release information and specifically can comprise: data connection identifier information (for example: APN, data connection ID, data connect IP etc.), perhaps session label information etc.;

Need to prove that described step 1202 need are carried out and got final product after step 1201, also can carry out synchronously with subsequent step;

Step 1203: connect the release indication according to described data, data gateway discharges described user terminal by the access connection of described IAD;

Connect the release indication according to described data, data gateway discharges the access connection that user terminal inserts by IAD 1;

Step 1204: data gateway discharges to indicate to other corresponding IADs transmissions of data connection according to described data connection and discharges the access connection request;

Concrete, when data gateway discharges other available accesses and connects, send to discharge to IAD 2 and insert connection requests;

Step 1205: described other IADs discharge other corresponding accesses and connect;

2 access connections that discharge user terminal according to described request of corresponding IAD;

Preferably, present embodiment can also comprise:

Step 1206: described IAD sends to discharge to insert to data gateway and connects response message.

In the present embodiment, have two data that insert connection (respectively by IAD 1 and IAD 2) respective user to be connected at first, when the data connection needed to discharge, two of correspondence were inserted connection and all will be released.Insert and connect according to different Access Networks, can be that different tunnels connects, for example, the GTP tunnel of 3GPP network, EPS carrying, the IPsec tunnel of wlan network, MIP tunnel, the Data path of WiMax network, the PMIPv6GRE tunnel of EPS N3G, DSMIPv6 tunnel, MIPv4 tunnel, etc.Data connect the connection that namely refers to certain data network PDN of user terminal access, for example: IP connection, two stack IP connection, PDN connection, IP-CAN etc.

Need to prove, for aforesaid each method embodiment, for simple description, so it all is expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not subjected to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.

Embodiment four is corresponding with the invention described above method, and the present invention also provides a kind of release in multi-access systems to insert the device embodiment that connects, and with reference to Figure 13, this device specifically can comprise:

The 4th receiver module 1301 be used for to receive data and connects and discharge indication, and described data connect and discharge indication and be used to indicate and discharge corresponding user terminal and be connected with data between the data gateway;

Concrete, described the 4th receiver module 1301 can be used for receiving user terminal and discharge indication or/and the data that network element sends connect.

Second release module 1302 is used for discharging indication according to described data connection, discharges each corresponding access of described data connection and connects.

Concrete, described second release module 1302 sends the release connection request for inserting each IAD that connects correspondence to described each; By described each IAD according to described release connection request, discharge with described user terminal between each access be connected.

Described data connect corresponding a plurality of access and connect, and then connect corresponding IAD transmission release by described second release module 1302 to described a plurality of accesses and insert connection request; Data gateway can at first send request to an IAD when send to discharge inserting connection request, treat this IAD will insert connect discharge after, again to second request of second IAD transmission; Perhaps, also can send corresponding a plurality of requests to a plurality of IADs simultaneously.

Wherein, data connect the connection that namely refers to certain data network PDN of user terminal access, for example: IP connection, two stack IP connection, PDN connection or IP-CAN etc.When the data connection need discharge, data connected each corresponding access connection and all will be released.Insert and connect according to different Access Networks, can be that different tunnels connects, for example, the GTP tunnel of 3GPP network, EPS carrying, the IPsec tunnel of wlan network or MIP tunnel, the data path of WiMax network (Data path), the PMIPv6 gre tunneling of EPSN3G, DSMIPv6 tunnel, MIPv4 tunnel, etc., described data connect the connection that namely refers to certain PDN of user terminal access, for example: IP connection, two stack IP connection, PDN connection, IP-CAN etc.

Adopt the described device of present embodiment, correctly the data of maintenance customer's terminal connect each corresponding access connection, also can make network can learn the access situation of user terminal timely, can judge correctly that also the used access of business data transmission connects, can not cause losing of data, improve the transmission performance of network data.

Embodiment five is corresponding with the invention described above method, and the present invention also provides a kind of release in multi-access systems to insert the device embodiment that connects, and with reference to Figure 14, this device specifically can comprise:

The 4th receiver module 1401, specifically for receive the data connection release indication that user terminal sends by an IAD, described data connect to discharge indicates the data that are used to indicate release user terminal access data network to connect;

User terminal at first connects one of them corresponding access connection with data connection release indication by described data and is sent on the IAD, by IAD this indication is sent to data gateway again; Suppose that the user is connected by the same data of two access connections (IAD 1 and IAD 2) access in the present embodiment, then user terminal sends this indication information by IAD 1 to data gateway;

The 4th sending module 1402 is used for connecting release according to described access and indicates, and sends data to policy control entity and connects release information, and described data connect the information that release information is used to indicate the data connection release of user terminal;

Described the 4th sending module 1402 also can exist first to discharge between submodule 1403 and the second release submodule 1404, perhaps only links to each other with the second release submodule 1404;

First discharges submodule 1403, is used for discharging indication according to described data connection and discharges described user terminal by the access connection of an Access Network;

Second discharges submodule 1404, is used for connecting other corresponding IADs transmission releases according to described data connection release indication to data and inserts connection request.

Wherein, described second discharges submodule 1404 connects other corresponding IADs to data and sends to discharge and insert connection requests, by described other IADs according to described release insert connection request discharge with user terminal between access be connected.

In the present embodiment, have two data that insert connection (respectively by IAD 1 and IAD 2) respective user to be connected at first, when the data connection needed to discharge, two of correspondence were inserted connection and all will be released.Insert and connect according to different Access Networks, can be that different tunnels connects, for example, the GTP tunnel of 3GPP network, EPS carrying, the IPsec tunnel of wlan network, MIP tunnel, the Data path of WiMax network, the PMIPv6 gre tunneling of EPS N3G, DSMIPv6 tunnel, MIPv4 tunnel, etc.Data connect the connection that namely refers to certain data network PDN of user terminal access, for example: IP connection, two stack IP connection, PDN connection, IP-CAN etc.

Corresponding with the method and apparatus embodiment of the invention described above embodiment, the present invention also provides a kind of structural representation that inserts the system embodiment that connects that discharges in multi-access systems, and with reference to shown in Figure 15, this system specifically can comprise:

Discharge data connection device 1501, be used for receiving data connection release indication, described data connect to discharge indicates the data that are used to indicate the described user terminal access data network of release to connect; And according to described data connection release indication, discharge described data and connect each corresponding access connection;

Described release data connection device 1501 can be integrated on the data gateway, also can exist as an entity separately, the described release data connection device 1501 of present embodiment can connect according to the data that user terminal sends to discharge indicates, and sends to each corresponding IAD of data connection to discharge connection request.

IAD 1502 is used for according to described release connection request, discharge with described user terminal between access be connected.

In the present embodiment, described IAD 1502 is according to described release connection request, discharge with described user terminal between access is connected, the upstate of each access connection of user terminal that just can upgrade in time makes and follow-uply can adopt correct access connection transmitting network data.Wherein, when IAD 1502 comprises a plurality of (at least two) in practice, then 1501 of described release data connection devices send corresponding a plurality of release connection requests to a plurality of IADs, and corresponding a plurality of IADs are according to described a plurality of release connection requests, each of user terminal are inserted to connect all discharge.

If policy control functions is arranged, then data gateway connects the release indication according to the data of user terminal, can also send data to described policy control entity and connect release information, and these data of notification strategy controlled entity connect d/d information; Described data connect release information and specifically can comprise: data connection identifier information (for example: APN, data connection ID, data connect IP etc.), perhaps session label information etc.

In another embodiment of the present invention, with reference to shown in Figure 16, described system specifically can comprise: discharge data connection device 1601, an IAD 1602 and other available IADs 1603, wherein:

Described release data connection device 1601, specifically for receive the data connection release indication that user terminal sends by an IAD, described data connect to discharge indicates the data that are used to indicate the described user terminal access data network of release to connect; And according to described data connection release indication, discharge described user terminal by the access connection of a described IAD, and discharge access connection requests to other IADs transmissions of data connection correspondence;

A described IAD 1602, the concrete data connection that is used for the transmission of forwarding user terminal discharges indication;

Described other available IADs 1603 are used for inserting other corresponding accesses of connection request release according to described release and connect.

Need to prove, because it is very detailed that the aforementioned method and apparatus that discharges the access connection in multi-access systems is introduced, so described release in multi-access systems inserted the not detailed part of system embodiment that connects, can no longer system be described in detail at this referring to aforementioned in multi-access systems, discharging the description that inserts the method and apparatus embodiment that connects.

Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.

More than the method, the Apparatus and system that in multi-access systems, discharge to insert connect that the embodiment of the invention is provided be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method and the thought thereof of the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the thought of the embodiment of the invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. one kind discharges the method that inserts connection in multi-access systems, it is characterized in that, comprising:

Data gateway reception user terminal is or/and the access that network element sends connects the release indication, and described access connection discharges indication and is used to indicate the corresponding user terminal of release by the access connection of Access Network;

Data gateway sends access information to policy control entity and upgrades indication, and described access information renewal indication is used to indicate policy control entity and upgrades the Access Network information that described user terminal inserts;

Connect the release indication according to described access, described data gateway discharges described user terminal by the access connection of Access Network, the described connection according to described access discharges indication, described data gateway discharges described user terminal and is connected with the access of IAD, comprise: connect to discharge according to described access and indicate, described data gateway sends release access connection request to connecting corresponding IAD with described access, so that described IAD inserts connection request according to described release, discharge with described user terminal between access be connected;

Data gateway reception policy control entity is indicated first policy control information that sends according to described access information renewal, and described first policy control information is used to indicate other available accesses connections that data gateway switches to the Business Stream of the access connection of described release current data connection correspondence;

Data gateway upgrades the carrying that described other available accesses connect according to described first policy control information.

2. method according to claim 1 is characterized in that, the access that described reception user terminal sends connects to discharge indicates, and comprising:

Data gateway receives the access connection release indication that user terminal sends by IAD.

3. method according to claim 1 is characterized in that, the access that described reception network element sends connects to discharge indicates, and comprising:

The access that data gateway receives at least one transmission in the following equipment connects the release indication: IAD, mobile management entity and certification authority server.

4. method according to claim 1 is characterized in that, the described connection according to described access discharges indication, after data gateway discharges described user terminal and the access of IAD is connected, also comprises:

Policy control entity upgrades indication according to described access information, connect other corresponding available IADs to current data and send second policy control information, described second policy control information is used to indicate described other available IADs and upgrades the carrying that corresponding available access connects;

Described available IAD is according to the carrying between described second policy control information renewal and the user terminal.

5. method according to claim 1 is characterized in that, described access connects and discharges indication and be included in mobile IP binding update messages, switch message or go in the connection message.

6. according to claim 1 or 4 described methods, it is characterized in that described access information upgrades indication and is included in strategy session updating message or the Diameter session updates message.

7. according to claim 1 or 4 described methods, it is characterized in that described access connects and discharges indication or access information and upgrade indication and comprise following at least a: insert connection identifier, insert connection type, Access Network sign, access network type information, positional information and be connected release type.

8. one kind discharges the device that inserts connection in multi-access systems, it is characterized in that, comprising:

First receiver module is used for the reception user terminal or/and the access that network element sends connects the release indication, and described access connection discharges indication and is used to indicate the corresponding user terminal of release by the access connection of Access Network;

First sending module is used for sending access information to policy control entity and upgrades indication, and described access information renewal indication is used to indicate policy control entity and upgrades the Access Network information that described user terminal inserts;

First release module, be used for connecting the release indication according to described access, discharge described user terminal by the access connection of Access Network, described first release module specifically is used for connecting the release indication according to described access, send release access connection request to connecting corresponding IAD with described access, so that described IAD inserts connection request according to described release, discharge with described user terminal between access be connected;

Second receiver module, indicate first policy control information that sends to data gateway for the reception policy control entity according to described access information renewal, described first policy control information is used to indicate other available accesses connections that data gateway switches to the Business Stream of the access connection of described release current data connection correspondence;

First update module is used for upgrading the carrying that described other available accesses connect according to described first policy control information.

9. device according to claim 8, it is characterized in that, described first receiver module specifically is used for receiving access that user terminal sends by IAD and connects and discharge indication, and described access connects and discharges indication and be used to indicate and discharge described user terminal and be connected with access between the IAD.

10. device according to claim 8 is characterized in that, the access that described first receiver module specifically is used at least one transmission of the following equipment of reception connects the release indication: IAD, mobile management entity and certification authority server.

11. a policy control entity is characterized in that, comprising:

The 3rd receiver module is used for receiving the access information renewal indication that data gateway sends; It is to send after the data gateway enforcement of rights requires the 1 described method that the release access connects in multi-access systems that described access information upgrades indication;

Second update module is used for upgrading indication according to the described access information of institute, upgrades the Access Network information that user terminal inserts;

Second sending module, be used for sending first policy control information according to described access information renewal indication to data gateway, the Business Stream that described first policy control information is used to indicate the access connection of described release switches to other corresponding available accesses connections of current data connection.

12. policy control entity according to claim 11 is characterized in that, also comprises:

The 3rd sending module, be used for upgrading indication according to described access information and send second policy control information to other available IADs that current data connects correspondence, described second policy control information is used to indicate described other available IADs and upgrades the carrying that corresponding available access connects.

13. one kind discharges in multi-access systems and inserts the system that connects, and it is characterized in that, comprising:

Discharge and insert jockey, be used for receiving the access connection release indication of user terminal and/or network element transmission, described access connection discharges indication and is used to indicate the corresponding user terminal of release by the access connection of Access Network, connect the release indication according to described access, discharge described user terminal by the access connection of Access Network, the described connection according to described access discharges indication, discharging described user terminal is connected with the access of IAD, comprise: connect to discharge according to described access and indicate, send release access connection request to connecting corresponding IAD with described access, so that described IAD inserts connection request according to described release, discharge with described user terminal between access be connected; And to policy control entity transmission access information renewal indication;

Policy control entity is used for upgrading indication according to described access information, upgrades the Access Network information that user terminal inserts; Described policy control entity, also for sending first policy control information, described first policy control information is used to indicate other available accesses connections that data gateway switches to the Business Stream of the access connection of described release current data connection correspondence;

Described release inserts jockey, also is used for upgrading the carrying that described other available accesses connect according to described first policy control information.

14. system according to claim 13 is characterized in that, described system also comprises: current data connects other corresponding available IADs;

Described policy control entity, also be used for upgrading indication according to described access information, send second policy control information to described other available IADs, described second policy control information is used to indicate described other available IADs and upgrades the carrying that corresponding available access connects;

Described other available IADs are used for according to the carrying between described second policy control information renewal and the user terminal.