CN101730072B - Packet data web gateway identification saving method and system in multi-access scene - Google Patents
Packet data web gateway identification saving method and system in multi-access scene Download PDFInfo
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Abstract
The invention discloses a packet data web gateway identification saving method and system in multi-access scene. The method includes that: when user equipment simultaneously accesses a packet data network by two access networks, namely a first access network and a second access network, and the identical packet data network connection is established, an affiliation user or authentication charging server saves the identification of the packet data web network; the first access network is a third generation partner plan 3GPP access network, and the second access network is a non-3GPP access network; or the first access network is a non-3GPP access network, and the second access network is a 3GPP access network; when releasing the access of one access network of the two access networks, the affiliation user or authentication charging server saves the identification of the packet data web gateway. The method can reasonably notify HSS/AAA, P-GW identification can be correctly stored or deleted, and the system is ensured to normally operate in related P-GW identification operation in multi-access scene.
Description
Technical field
The present invention relates to the communications field, relate in particular in the grouping system (Evolved PacketSystem abbreviates EPS as) of evolution the store method and the system of relevant packet data web gateway identification under the multiple access scene.
Background technology
Third generation partner program (3rd Generation Partnership Project; Abbreviating 3GPP as) grouping system of evolution is by UMTS land radio access web (the EvolvedUniversal Terrestrial Radio Access Network of evolution; Abbreviate E-UTRAN as), mobile management unit (Mobility Management Entity; Abbreviate MME as), gateway (ServingGateway; S-GW), grouped data network gateway (Packet Data Network Gateway; Abbreviate P-GW or PDN GW as), authentication and authorization charging (Authentication, Authorization andAccounting the abbreviate AAA as) server of home subscriber server (Home Subscriber Server abbreviates HSS as), 3GPP; "Policy and Charging Rules Function (Policy and ChargingRules Function abbreviates PCRF as) entity and other support nodes are formed.
Fig. 1 is the sketch map of system architecture of supporting the EPS of multiple different access technologies.E-UTRAN is the 3GPP wireless access network of EPS system; Inside comprises base station (the evolved NodeB of many evolution; Be called for short eNB), MME is responsible for the related work of chains of command such as processing and the contextual management of user's mobile management of mobile management, Non-Access Stratum signaling; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, between E-UTRAN and P-GW, transmits data, and is responsible for pending datas such as paging are carried out buffer memory; P-GW then is the borde gateway of EPS and packet data network (Packet Data Network abbreviates PDN as) (being the network that operator provides the IP operation place), and the access of being responsible for PDN reaches functions such as between EPS and PDN, transmitting data; PCRF is the "Policy and Charging Rules Function entity, and it links to each other through receiving interface Rx and carrier network agreement (Internet Protocol abbreviates IP as) business network; Obtain business information, in addition, it links to each other with gateway device in the network through the Gx/Gxa/Gxc interface; Be responsible for initiating the foundation that IP carries; Guarantee the service quality (Quality of Service abbreviates QoS as) of business datum, and the control of chargeing.Wherein, The terminal can be linked on the P-GW through E-UTRAN, MME and S-GW; And with outside PDN interworking service data; So claim that at this E-UTRAN, MME and S-GW are that 3GPP connecting system or 3GPP insert (this is a kind of of 3GPP connecting system, in fact also has other 3GPP connecting system, enumerate at this this is a kind of).
EPS also supports the access of non-3GPP connecting system, and wherein, the access of non-3 GPP system realizes that through the S2a/b/c interface P-GW inserts the data anchor point that inserts with non-3GPP as 3GPP.In the system architecture diagram of EPS, non-3 GPP system can be divided into the non-3GPP IP access of trusted and trustless non-3GPP IP inserts.The non-3GPP IP of trusted inserts and can directly be connected with P-GW through the S2a interface; Trustless non-3GPP IP inserts packet data gateway (the Evolved Packet DataGateway that needs through evolution; Abbreviate ePDG as) link to each other with P-GW; Interface between ePDG and P-GW is S2b; S2c provides subscriber equipment (User Equipment; Abbreviate UE as) with relevant control and the mobility support of user plane between the P-GW, the mobility management protocol of its support is the mobile IP v 6 (Mobile IPv6 Support for Dual Stack Hosts and Routers abbreviates DSMIPv6 as) of two stacks.
In the 3GPP connecting system, 3GPP mobile management unit MME links to each other through interface S6a with HSS/AAA, and it act as when 3GPP inserts, and accomplishes user's access authentication, and reports the information of 3GPP Access Network and the identification information of P-GW to HSS/AAA; Non-3 GPP access network closes (being positioned at trusted or non-trust Access Network) and the packet data gateway ePDG of evolution passes through STa respectively; SWa; SWm interface link to each other with HSS/AAA (certainly in the middle of possibly pass through aaa server agency); When its effect right and wrong 3GPP inserts, accomplish the user node access authentication and report the information of non-3 GPP access network to HSS/AAA; Grouped data network gateway P-GW and HSS/AAA link to each other through inserting S6b, when it act as non-3GPP access, report the identification information of P-GW to HSS/AAA.
The next generation of EPS system need to support UE insert a PDN simultaneously through multiple Access Network, i.e. Multiple Access (multiple access), and this is a new function in the EPS evolution process, relevant technology does not also have maturation, needs constantly perfect.As shown in Figure 2, UE under the covering of non-3GPP and 3GPP access, is linked into PDN through non-3GPP IP Access Network and 3GPP Access Network through same P-GW simultaneously.Under this scene, P-GW is that UE distributes an IP address, promptly has only IP connection access network session (IP Connectivity Access Network abbreviates IP-CAN as) between UE and the PDN.Scene as shown in Figure 2 supposes that UE initially adheres to through the 3GPP Access Network, and UE is established to the corresponding PDN of acquiescence Access Point Name (Access Point Name is called for short APN) and connects.In this process; GTP data channel or PMIPv6 data channel have been set up between S-GW and the P-GW; Be used for service data transmission; 3GPP mobile management unit MME will and home subscriber server/authentication and authorization charging server HSS/AAA set up session, and transmit the relevant user and the network information; When UE decision is used to transmit through trusting connection that non-3 GPP access network is established to this PDN that some are new when professional again; Trust between non-3 GPP access network pass and the P-GW and set up the PMIPv6 data channel; And need to keep the data channel between former S-GW and the P-GW not delete; And can continue transport service; And trust non-3 GPP system IAD will and home subscriber server/authentication and authorization charging server HSS/AAA set up session, transmit and trust the relevant user and the network information of non-3 GPP access network; Another kind of situation; If UE decision is to be used to transmit that some are new when professional through the connection that trustless non-3 GPP access network is established to this PDN; Set up the PMIPv6 data channel like this between ePDG and the P-GW; And need to keep the data channel between former S-GW and the P-GW not delete; And can continue transport service, and distrust non-3 GPP system ePDG will and home subscriber server/authentication and authorization charging server HSS/AAA set up session, transmit and distrust the relevant user and the network information of non-3 GPP access network.
The scene of more than describing all is the basic scene of multiple access research topic, and prior art is supporting also there are problems on the above function, wherein about a problem of user profile and networking information stores.
Canned data among the current HSS/AAA is also stored the relevant information of P-GW except the CAMEL-Subscription-Information of UE, specifically comprise following related content:
1, need the identification information of storage P-GW among the HSS/AAA, when the interdepartmental system of UE switches or initiates multiple access, can from HSS/AAA, obtain the sign of the P-GW that strives for, can guarantee not changing of P-GW like this, continuously professional;
2, the user is when initial access network, and HSS/AAA will register the P-GW identification information, when the user initiates off-line operation, and the information of HSS/AAA deletion P-GW.Concrete: when 3GPP inserts, report the identification information that upgrades P-GW to HSS/AAA by MME; During the 3GPP off-line, send the identification information of signaling deletion P-GW to HSS/AAA by MME.When non-3GPP inserts, report its identification information of renewal to HSS/AAA by P-GW; During non-3GPP off-line, send its identification information of signaling deletion to HSS/AAA by P-GW;
3, the user is when non-3 GPP access network switches to the 3GPP Access Network, and P-GW no longer sends its identification information of signaling deletion to HSS/AAA; When the user switched to non-3 GPP access network from the 3GPP Access Network, MME no longer sent its identification information of signaling deletion to HSS/AAA.
According to above requirement, under the multiple access scene of the prior art, following problem can appear:
1, UE has set up the multiple access that same PDN is connected from the 3GPP connecting system with non-3GPP connecting system.Certain moment, if the connection that UE breaks off this Access Network from the 3GPP connecting system, but not the connection of 3GPP connecting system would keep; At this moment, MME can send " notice request " signaling to HSS/AAA, the identification information of notice HSS/AAA deletion P-GW; After the sign of P-GW is deleted from HSS/AAA; When UE once more when the 3GPP connecting system is set up the multiple access that this PDN connects, perhaps when 3GPP switches, just can't obtain the sign of correct P-GW from HSS/AAA; Can't guarantee not changing of P-GW, cause multiple access/handoff failure;
2, UE has set up the multiple access that same PDN is connected from the 3GPP connecting system with non-3GPP connecting system.Certain moment, if the connection that UE breaks off this Access Network from non-3GPP connecting system, and the connection of 3GPP connecting system would keep; At this moment, P-GW can send " renewal of P-GW address " signaling to HSS/AAA, the identification information of notice HSS/AAA deletion P-GW; After the sign of P-GW is deleted from HSS/AAA; When UE once more when non-3GPP connecting system is set up the multiple access that this PDN connects, perhaps when non-3GPP switches, just can't obtain the sign of correct P-GW from HSS/AAA; Can't guarantee not changing of P-GW, cause multiple access/handoff failure.
Therefore; The operation of multiple access scene and prior art exist bigger different; How reasonably to notify HSS/AAA and make its correct storage/deletion P-GW sign; To guarantee flow ability operate as normal, be that prior art is irrealizable, also be inevitably problem to be solved of multiple access research topic.
Summary of the invention
The technical problem that the present invention will solve provides the store method and the system of packet data web gateway identification under the multiple access scene, and when under the multiple access scene, relating to the operation of P-GW sign, the assurance system normally moves.
In order to address the above problem; The invention provides the store method of packet data web gateway identification under the multiple access scene; Comprise: subscriber equipment through two Access Networks promptly first Access Network insert a packet data network simultaneously and set up same packet data network with second Access Network when being connected, the sign of home subscriber or authentication and authorization charging server preservation grouped data network gateway; Said grouped data network gateway inserts said packet data network simultaneously through two Access Networks and sets up same packet data network when connecting detecting said subscriber equipment, notifies the said packet data network of said home subscriber or authentication and authorization charging server to be connected to the multiple access state; After said home subscriber or authentication and authorization charging server were received this notice, the access state that the said packet data network that has write down is connected changed to the multiple access state from single access state, and keeps the sign of said grouped data network gateway; When discharging the access of an Access Network in said two Access Networks, said home subscriber or authentication and authorization charging server change to single access state with the multiple access state of record, and keep the sign of said grouped data network gateway.
Further, above-mentioned store method also has following characteristics:
The mode that said grouped data network gateway notifies said home subscriber or the said packet data network of authentication and authorization charging server to be connected to the multiple access state is; Said grouped data network gateway sends grouped data network gateway address renewal demand signalling to said home subscriber or authentication and authorization charging server, and carries the multiple access indication.
Further, above-mentioned store method also has following characteristics:
Said subscriber equipment initiates to discharge the access of said 3GPP Access Network through mobile management unit, gateway and said grouped data network gateway; After said home subscriber or authentication and authorization charging server are received the notice request signaling of said mobile management unit transmission; When detecting access state that said packet data network connects and being the multiple access state; The access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
Further, above-mentioned store method also has following characteristics:
When said subscriber equipment initiates to discharge the access of said non-3 GPP access network through non-3 GPP access network gateway and said grouped data network gateway; After said home subscriber or authentication and authorization charging server are received the grouped data network gateway address update instruction of said grouped data network gateway transmission; When detecting access state that said packet data network connects and being the multiple access state; The access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
Further, above-mentioned store method also has following characteristics:
When said subscriber equipment directly initiates to discharge the access of said non-3 GPP access network through said grouped data network gateway; After said home subscriber or authentication and authorization charging server are received the grouped data network gateway address update instruction of said grouped data network gateway transmission; When detecting access state that said packet data network connects and being the multiple access state; The access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
Further, above-mentioned store method also has following characteristics:
When said grouped data network gateway initiates to discharge the access of one of them Access Network of said two Access Networks; After said home subscriber or authentication and authorization charging server are received the grouped data network gateway address update instruction of said grouped data network gateway transmission; When detecting access state that said packet data network connects and being the multiple access state; The access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
Further, above-mentioned store method also has following characteristics:
When said subscriber equipment or said grouped data network gateway initiate to discharge the access of another Access Network; Said home subscriber or authentication and authorization charging server are received and are discharged indication signaling and detect access state that the said packet data network of record connects when being single access state, the sign of deleting said grouped data network gateway.
Further, above-mentioned store method also has following characteristics:
When said subscriber equipment inserts packet data network connection through said 3GPP Access Network or non-3 GPP access network; The access state that said home subscriber or authentication and authorization charging server write down said packet data network connection is single access state, and preserves packet data web gateway identification; When discharging the access of said Access Network, after said home subscriber or authentication and authorization charging server detect access state that the said packet data network of record connects and be single access state, delete said packet data web gateway identification.
Further, above-mentioned store method also has following characteristics:
The access state that said home subscriber or authentication and authorization charging server use the said packet data network of one of following mode record to connect; Be provided for writing down the flag bit of the access state that said packet data network connects,, write down the different access state that said packet data network connects through changing the value of this flag bit; Perhaps, the sign of the said grouped data network gateway through storing different numbers is represented the different access state that said packet data network connects.
Further, above-mentioned store method also has following characteristics:
Said first Access Network is a third generation partner program 3GPP Access Network, the said second Access Network right and wrong 3GPP Access Network; Perhaps, the said first Access Network right and wrong 3GPP Access Network, said second Access Network is the 3GPP Access Network.
In order to solve the problems of the technologies described above; The present invention also provide a kind of under the multiple access scene saved system of packet data web gateway identification; Comprise grouped data network gateway and home subscriber or authentication and authorization charging server; Said home subscriber or authentication and authorization charging server are used at subscriber equipment when promptly first Access Network and second Access Network insert a packet data network simultaneously and be connected through two Access Networks the preservation packet data web gateway identification; Said grouped data network gateway; Be used for inserting said packet data network simultaneously through two Access Networks and setting up same packet data network when connecting detecting said subscriber equipment, notify the said packet data network of said home subscriber or authentication and authorization charging server to be connected to the multiple access state; Said home subscriber or authentication and authorization charging server, after also being used to receive said notice, the access state that the said packet data network that has write down is connected changes to the multiple access state from single access state, and keeps the sign of said grouped data network gateway; Also be used for when the access of an Access Network of said two Access Networks is released, the multiple access state that writes down changed to single access state, and keep the sign of said grouped data network gateway.
Further, said system also has following characteristics:
Said home subscriber or authentication and authorization charging server; Also be used for initiating to discharge the access of said 3GPP Access Network through mobile management unit, gateway and said grouped data network gateway at said subscriber equipment, receive the notice request signaling that said mobile management unit sends after; Perhaps; Said subscriber equipment initiates to discharge the access of said non-3 GPP access network through non-3 GPP access network gateway and said grouped data network gateway, receive the grouped data network gateway address update instruction that said grouped data network gateway sends after; Perhaps; Said subscriber equipment initiates to discharge the access of said non-3 GPP access network through said grouped data network gateway, receive the grouped data network gateway address update instruction that said grouped data network gateway sends after; Perhaps; Said grouped data network gateway is initiated the access of one of them Access Network of said two Access Networks of release; After receiving the grouped data network gateway address update instruction of said grouped data network gateway transmission; After detecting access state that said packet data network connects and being the multiple access state, the access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
Adopt method of the present invention, can reasonably notify HSS/AAA, and make its correct storage or deletion P-GW sign, when under the multiple access scene, relating to the operation of P-GW sign, the assurance system normally moves.
Description of drawings
Fig. 1 is the sketch map of EPS system architecture in the prior art;
Fig. 2 is according to the sketch map of the multiple access scene of correlation technique in the prior art;
Fig. 3 is first kind of flow chart that 3GPP Access Network and non-3 GPP access network insert simultaneously among the embodiment one;
Fig. 4 is second kind of flow chart that 3GPP Access Network and non-3 GPP access network insert simultaneously among the embodiment one;
Fig. 5 is the third flow chart that 3GPP Access Network and non-3 GPP access network insert simultaneously among the embodiment one;
Fig. 6 is the store method flow chart of P-GW sign among the embodiment one;
Fig. 7 is the store method flow chart of P-GW sign among the embodiment two;
Fig. 8 is the store method flow chart of P-GW sign among the embodiment three;
Fig. 9 is the store method flow chart of P-GW sign among the embodiment four.
Embodiment
Insert the difference of the order of Access Network according to UE, can the 3GPP Access Network be called first Access Network, non-3 GPP access network is called second Access Network; Perhaps, non-3 GPP access network is called first Access Network, the 3GPP Access Network is called second Access Network.UE is connected to same PDN simultaneously through first Access Network and second Access Network, and when setting up same PDN and connecting, HSS/AAA preserves packet data web gateway identification; When UE discharged the access of an Access Network in two Access Networks, HSS/AAA did not delete the P-GW sign, but continued to keep the P-GW sign.Make UE once more when the Access Network that discharges is set up the access that this PDN connects, perhaps, when carrying out the switching of Access Network, make the sign that to obtain correct P-GW from HSS/AAA, guarantee the correct execution that inserts or switch once more.
Make HSS/AAA realize that the mode of aforesaid operations has a lot; For the information interaction flow process in the influence of minimum degree protocols having; Can adopt following mode: UE to set up same PDN through two Access Networks connects; When inserting a PDN simultaneously, the access state that this PDN of HSS/AAA record connects is the multiple access state; When UE or P-GW initiated to discharge the access of an Access Network in two Access Networks, after HSS/AAA detected previous access state that this PDN of its record connects and is the multiple access state, the access state that this PDN is connected changed to single access state.When UE or P-GW initiate to discharge the access of last Access Network, after the previous access state that this PDN of HSS/AAA detection record connects is single access state, delete said P-GW sign.
HSS/AAA can be provided with the flag bit that PDN connects access state, through changing the value of this flag bit, changes PDN and connects access state.For example, be 1 expression multiple access state with flag bit; With flag bit is 0, representes single access state.Also can represent the access state that current PDN connects through the sign of two parts of storages or a P-GW.For example, the sign of two parts of P-GW of storage is represented the multiple access state; Store the sign of a P-GW and represent single access state.
The saved system of packet data web gateway identification under the multiple access scene comprises grouped data network gateway and home subscriber or authentication and authorization charging server;
Said grouped data network gateway; Be used for inserting said packet data network simultaneously through two Access Networks and setting up same packet data network when connecting detecting said subscriber equipment, notify the said packet data network of said home subscriber or authentication and authorization charging server to be connected to the multiple access state;
Said home subscriber or authentication and authorization charging server are used at subscriber equipment when promptly first Access Network and second Access Network insert a packet data network simultaneously and be connected through two Access Networks the preservation packet data web gateway identification; After also being used to receive said multiple access indication, the access state that the said packet data network that has write down is connected changes to the multiple access state from single access state, and keeps the sign of said grouped data network gateway; Also be used for when the access of an Access Network of said two Access Networks is released, the multiple access state that writes down changed to single access state, and keep the sign of said grouped data network gateway.Also be used for initiating to discharge the access of said 3GPP Access Network through mobile management unit, gateway and said grouped data network gateway at said subscriber equipment, receive the notice request signaling that said mobile management unit sends after; Perhaps; Said subscriber equipment initiates to discharge the access of said non-3 GPP access network through non-3 GPP access network gateway and said grouped data network gateway, receive the grouped data network gateway address update instruction that said grouped data network gateway sends after; Perhaps; Said subscriber equipment initiates to discharge the access of said non-3 GPP access network through said grouped data network gateway, receive the grouped data network gateway address update instruction that said grouped data network gateway sends after; Perhaps; Said grouped data network gateway is initiated the access of one of them Access Network of said two Access Networks of release; After receiving the grouped data network gateway address update instruction of said grouped data network gateway transmission; After detecting access state that said packet data network connects and being the multiple access state, the access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described.
Embodiment one
At UE when single Access Network initially inserts; Acquiescence is single access state for the PDN connection status of UE among the HSS/AAA; UE inserts this PDN through second Access Network again, realizes that 3GPP Access Network and non-3 GPP access network are linked to this PDN simultaneously, when setting up same PDN connection; The PDN connection status of this UE of P-GW notice HSS/AAA is the multiple access state, and P-GW sign and current state that HSS/AAA preserves in this PDN connection are the multiple access state.After UE initiates the multi-link removal operation of 3GPP Access Network; HSS/AAA receives " notice request " message that MME sends; And after detecting original state that this PDN connects and being the multiple access state, only change that to connect state be single access state more, identify and do not delete P-GW.
HSS/AAA can be provided with the flag bit that PDN connects access state, through changing the value of this flag bit, changes PDN and connects access state.For example, be 1 expression multiple access state with flag bit; With flag bit is 0, representes single access state.Also can represent the access state that current PDN connects through the sign of two parts of storages or a P-GW.For example, the sign of two parts of P-GW of storage is represented the multiple access state; Store the sign of a P-GW and represent single access state.
The process that UE inserts a certain PDN simultaneously through 3GPP Access Network and non-3 GPP access network can be that Fig. 3 is (after UE inserts a PDN through non-3 GPP access network earlier; Insert this PDN through the 3GPP Access Network again), Fig. 4 is (after UE inserts a PDN through the 3GPP Access Network earlier; Insert this PDN through non-3 GPP access network (S2a mode) again) with the arbitrary access procedure shown in Fig. 5 (UE earlier insert a PDN and is connected after, insert this PDN connection through non-3 GPP access network (S2c mode) again) through the 3GPP Access Network.Specifically describe the access procedure of Fig. 3, Fig. 4, Fig. 5 below:
As shown in Figure 3; UE is attached to EPS through non-3 GPP access network; And have one or several professional transmission, then, the terminal initiates to insert request through the 3GPP Access Network to EPS; P-GW is after receiving agent binding update/establishment default bearing demand signalling, and it is the multiple access scene that P-GW announces HSS/AAA current.Concrete access procedure may further comprise the steps:
Step 301, UE is linked into EPS through non-3 GPP access network, and has relevant business and in this connection, transmit; According to existing flow process, HSS/AAA has preserved the P-GW sign, and the access state of acquiescence is single access state;
Step 302, UE sends " attach request " signaling to MME, and request inserts EPS through the 3GPP connecting system;
Step 303, UE accomplishes access authentication, position renewal and Authorized operation through 3GPP Access Network (MME);
Step 304, MME sends " setting up the default bearing request " signaling to S-GW;
Above-mentioned steps 302 to 304 is attachment steps at the 3GPP Access Network that UE initiates; If having accomplished at the 3GPP Access Network, adheres to UE; UE just initiates the multiple access that another PDN connects in the 3GPP Access Network; What send in the step 302 so is " PDN connects the request of foundation " signaling, and step 303 need not carried out.
Step 305, S-GW sends " setting up the default bearing request " signaling (GTP) or " agent binding update " signaling (PMIPv6) and gives P-GW after receiving " setting up the default bearing request " signaling that MME sends, and tunnel binding is set up in request;
Step 306, P-GW according to corresponding mechanism judge the PDN of current UE connect be the multiple access situation after, send " request is upgraded in the P-GW address " signaling to HSS/AAA, and carry " multiple access indication ";
Step 307, after HSS/AAA receives this " multiple access indication ", the PDN that learns current UE connect be the multiple access situation after, the PDN connection status that writes down this UE is the multiple access state, and keeps the P-GW sign of preservation.
Step 308, P-GW responds perhaps " agent binding is replied " (PMIPv6) signaling of " setting up the default bearing response " signaling (GTP) to S-GW, and announcement S-GW tunnel binding is accomplished;
Step 309, S-GW responds " default bearing is set up and replied " to MME;
Step 310 is carried out radio bearer foundation and bearer update operation between UE and MME.
As shown in Figure 4, the terminal is attached to EPS through the 3GPP Access Network, and has one or several professional transmission.Then, the terminal initiates to insert request (based on the S2a interface) to EPS through non-3 GPP access network trusty, and P-GW is after receiving agent binding update, and it is the multiple access scene that P-GW announces HSS/AAA current, and concrete access procedure may further comprise the steps:
Step 401, UE is linked into the EPS system through the 3GPP Access Network, and has relevant business and in this connection, transmit, and wherein sets up data channel through GTP or PMIPv6 agreement between S-GW and the P-GW; According to existing flow process, HSS/AAA has preserved the P-GW sign, and the access state of acquiescence is single access state;
Step 402, UE and non-3 GPP access network are closed and are carried out the link establishment operation of eating dishes without rice or wine of specific non-3 GPP access network;
Step 403, UE accomplishes access authentication and Authorized operation through non-3 GPP access network;
Step 404, UE initiates attach request to non-3 GPP access network according to its specific mode;
Above-mentioned steps 402 to 404 is attachment steps at the 3GPP Access Network that UE initiates; If having accomplished at non-3 GPP access network, adheres to UE; UE just initiates the multiple access that another PDN connects in non-3 GPP access network; What send in the step 402 so is " PDN connects the request of foundation " signaling, and step 403 need not carried out.
Step 405, non-3 GPP access network are closed after receiving that the attach request that UE sends/PDN connects the request of foundation, send " agent binding update " message and give P-GW, and tunnel binding is set up in request;
Step 406, P-GW according to corresponding mechanism judge the PDN of current UE connect be the multiple access situation after, send " request is upgraded in the P-GW address " signaling to HSS/AAA, and carry " multiple access indication ";
Step 407, after HSS/AAA receives this " multiple access indication ", the PDN that learns current UE connect be the multiple access situation after, the PDN connection status that writes down this UE is the multiple access state, and keeps the P-GW sign of preservation;
Step 408, P-GW closes to non-3 GPP access network and responds " agent binding affirmation " signaling, and the announcement non-3 GPP access network closes tunnel binding to be accomplished;
Step 409, UE realizes successfully adhering at non-3 GPP access network.
As shown in Figure 5; With shown in Figure 4 identical, all be after expression UE inserts through the 3GPP Access Network earlier, to insert through non-3 GPP access network again; Different with access way shown in Figure 4 is; UE inserts through the S2c interface of non-3 GPP access network, and it is the multiple access scene that P-GW announces HSS/AAA current, and concrete access procedure may further comprise the steps:
Step 501 is identical to step 403 to the step 401 among step 503 and Fig. 4;
Step 504, UE initiates attach request to non-3 GPP access network according to its specific mode, and carries out home address, operations such as bootstrapping;
Above-mentioned is the attachment steps at second Access Network that UE initiates, and adheres to if accomplished, and UE just hopes and in second Access Network, initiates the multiple access that another PDN connects, goes on foot from 502-503 so and just can omit.In this step, promptly 504 go on foot " PDN connection request " signaling that the right and wrong 3GPP connecting system of initiation is specific;
Step 505, UE sends " Binding Update " message to P-GW and gives P-GW, and tunnel binding is set up in request;
Step 506, P-GW according to corresponding mechanism judge the PDN of current UE connect be the multiple access situation after, send " request is upgraded in the P-GW address " signaling to HSS/AAA, and carry " multiple access indication ";
Step 507, after HSS/AAA receives this " multiple access indication ", the PDN that learns current UE connect be the multiple access situation after, the PDN connection status that writes down this UE is the multiple access state, and keeps the P-GW sign of preservation;
Step 508, P-GW responds " binding acknowledgement " signaling to UE, and announcement UE tunnel binding is accomplished.
Behind the arbitrary access procedure of above-mentioned Fig. 3, Fig. 4 or Fig. 5, UE inserts a PDN simultaneously through 3GPP Access Network and non-3 GPP access network and is connected, and is as shown in Figure 6, and the process that UE initiates the access of release 3GPP Access Network may further comprise the steps:
Step 601, after Fig. 3, Fig. 4 or process shown in Figure 5, UE inserts a PDN simultaneously through 3GPP Access Network and non-3 GPP access network, sets up same PDN and connects;
Step 602, UE sends the detach request signaling through the 3GPP Access Network to MME;
Above-mentioned 602 steps are attachment removal steps at the 3GPP Access Network that UE initiates, and in the 3GPP Access Network, initiate the removal that a certain PDN connects if UE just hopes, this step is " PDN connects the deletion request " signaling so;
Step 603, MME sends the deleting bearing demand signalling to S-GW;
Step 604, S-GW sends deleting bearing demand signalling or agent binding update messages to P-GW after receiving the deleting bearing demand signalling that MME sends, wherein lifetime zero setting in the agent binding update messages, expression request deletion tunnel binding;
Step 605, P-GW replys to S-GW response deleting bearing response or agent binding update, and notice S-GW separates in the tunnel and binds completion;
Step 606, S-GW sends deleting bearing to MME and replys signaling;
Step 607, S-GW responds attachment removal to UE and replys, and notice is removed and is adhered to successfully;
Step 608, MME learns that current UE will connect from the deletion of 3GPP Access Network, sends the announcement demand signalling and gives HSS/AAA, HSS/AAA is to the MME echo reply;
Step 609 after the PDN of the UE of HSS/AAA detection record connects access state and is the multiple access state, changes to single access state with the PDN connection status of this UE, and keeps the P-GW sign.
If after the step 609, when UE or P-GW initiated the flow process of non-3 GPP access network initiation release non-3 GPP access network, after the access state that this PDN of HSS/AAA detection connects was single access state, deletion P-GW identified.
Through said method, when UE once more when the 3GPP Access Network is set up the access that this PDN connects, perhaps, when non-3GPP switches, make the sign that can obtain correct P-GW from HSS/AAA, guarantee the correct execution that inserts or switch once more.
The foregoing description one explanation be that UE initiated to remove from the 3GPP Access Network sight of access after UE passed through the 3GPP Access Network and inserts a certain PDN simultaneously with non-3 GPP access network.Initiate to remove the sight that inserts with embodiment two and embodiment three explanation UE below from non-3 GPP access network.Among the embodiment two be through non-3 GPP access network based on the S2a mouth, be based on the S2c mouth through non-3 GPP access network among the embodiment three.
Embodiment two
At UE when single Access Network initially inserts; Acquiescence is single access state for the PDN connection status of UE among the HSS/AAA; UE inserts this PDN through second Access Network again, realizes that 3GPP Access Network and non-3 GPP access network are linked to a certain PDN simultaneously, when setting up same PDN connection; The PDN connection status of this UE of P-GW notice HSS/AAA is the multiple access state, and P-GW sign and current state that HSS/AAA preserves in this PDN connection are the multiple access state.After UE initiates the multi-link removal operation of non-3 GPP access network; HSS/AAA receives " upgrading the P-GW Address requests " message that P-GW sends; And after detecting original state that this PDN connects and being the multiple access state, only change that to connect state be single access state more, identify and do not delete P-GW.
HSS/AAA can be provided with the flag bit that PDN connects access state, through changing the value of this flag bit, changes PDN and connects access state.For example, be 1 expression multiple access state with flag bit; With flag bit is 0, representes single access state.Also can represent the access state that current PDN connects through the sign of two parts of storages or a P-GW.For example, the sign of two parts of P-GW of storage is represented the multiple access state; Store the sign of a P-GW and represent single access state.
Among the embodiment two, UE accomplishes with non-3 GPP access network through the 3GPP Access Network and inserts the process that a PDN is connected simultaneously, also can be Fig. 3, Fig. 4 or arbitrary process shown in Figure 5.As shown in Figure 7, the process that UE initiates release non-3 GPP access network access (based on the S2a interface) may further comprise the steps:
Step 701, after Fig. 3, Fig. 4 or process shown in Figure 5, UE inserts a PDN simultaneously through 3GPP Access Network and non-3 GPP access network (through the S2a interface), sets up same PDN and connects;
Step 702, UE closes through non-3 GPP access network and initiates the specific detach request of non-3 GPP access network;
Above-mentioned 702 steps are attachment removal steps at second Access Network that UE initiates, and in second Access Network, initiate the removal that a certain PDN connects if UE just hopes, so should specific " PDN the connects the deletion request " signaling of step right and wrong 3GPP connecting system.
Step 703, non-3 GPP access network are closed after receiving that the detach request that UE sends/PDN connects the deletion request, send " agent binding update " message and give P-GW, wherein lifetime zero setting in this signaling, request deletion tunnel binding;
Step 704, P-GW sends " request is upgraded in the P-GW address " signaling to HSS/AAA;
Step 705 after the PDN connection status of the UE of HSS/AAA detection record is the multiple access state, changes to single access state with the PDN connection status of this UE, and keeps the P-GW sign.
Step 706, P-GW closes to non-3 GPP access network and responds " agent binding affirmation " signaling, and tunnel, announcement non-3 GPP access network pass is separated to bind and is accomplished;
Step 707, UE realizes successful attachment removal at non-3 GPP access network.
If after the step 707, when UE or P-GW initiated the flow process of 3GPP Access Network initiation release 3GPP Access Network, after the access state that this PDN of HSS/AAA detection connects was single access state, deletion P-GW identified.
Embodiment three
Embodiment three is that UE initiates to discharge the process that non-3 GPP access network inserts based on the S2c interface with the main difference point of embodiment two.As shown in Figure 8, may further comprise the steps:
Step 801, after Fig. 3, Fig. 4 or process shown in Figure 5, UE inserts a PDN simultaneously through 3GPP Access Network and non-3 GPP access network (through the S2c interface), sets up same PDN and connects;
Step 802, the part that the non-3GPP that this PDN of UE decision deletion connects inserts, so send the Binding Update signaling to P-GW, and in signaling with lifetime zero setting;
Step 803, P-GW sends " request is upgraded in the P-GW address " signaling to HSS/AAA;
Step 804 after the PDN connection status of the UE of HSS/AAA detection record is the multiple access state, changes to single access state with the PDN connection status of this UE, and keeps the P-GW sign.
Step 805, P-GW responds " binding acknowledgement " signaling to UE, and announcement UE separates to bind and accomplishes;
Step 806 is carried out the non-3 GPP access network resource and is discharged between UE and the P-GW.
If after the step 806, when UE or P-GW initiated the flow process of 3GPP Access Network initiation release 3GPP Access Network, after the access state that this PDN of HSS/AAA detection connects was single access state, deletion P-GW identified.
Embodiment four
What describe among the embodiment one, two, three is the release 3GPP Access Network of UE initiation or the access procedure of non-3 GPP access network; What describe among the embodiment four is the release 3GPP Access Network of P-GW initiation or the access procedure of non-3 GPP access network; As shown in Figure 9, may further comprise the steps:
Step 901, after Fig. 3, Fig. 4 or process shown in Figure 5, UE inserts a PDN simultaneously through 3GPP Access Network and non-3 GPP access network, sets up same PDN and connects, and have business datum and on different connecting systems, transmit;
Step 902, P-GW decision-making or according to the triggering of other network element needs the access of one of them Access Network of deletion;
The deletion PDN that P-GW initiates connects deletion, possibly be that all IP streams of a certain Access Network are all moved to the another one Access Network because behind the UE initiation IP stream migration, and this Access Network does not have business data transmission, can be other reasons yet.
Step 903, P-GW sends " request is upgraded in the P-GW address " signaling to HSS/AAA;
Step 904 after the PDN connection status of the UE of HSS/AAA detection record is the multiple access state, changes to single access state with the PDN connection status of this UE, and keeps the P-GW sign.
Step 905, P-GW initiates the deletion flow process of a certain Access Network of PDN multiple access;
Situation except the foregoing description one to four description; If UE only promptly is linked into a certain PDN when connecting through 3GPP Access Network or non-3 GPP access network through an Access Network; The access state that this PDN of HSS/AAA acquiescence connects is single access state, and preserves the P-GW sign, when flow process is removed in the access of UE or this Access Network of P-GW initiation; When the access state that the PDN of HSS/AAA detection record connects is single access state, discharge the access and the deletion P-GW sign of this Access Network.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the store method of packet data web gateway identification under the multiple access scene comprises:
Subscriber equipment is that the 3GPP Access Network inserts a packet data network simultaneously and sets up same packet data network with non-3 GPP access network when being connected through two Access Networks, and home subscriber server or authentication and authorization charging server are preserved the sign of grouped data network gateway;
Said grouped data network gateway inserts said packet data network simultaneously through two Access Networks and sets up same packet data network when connecting detecting said subscriber equipment, notifies the said packet data network of said home subscriber server or authentication and authorization charging server to be connected to the multiple access state; After said home subscriber server or authentication and authorization charging server were received this notice, the access state that the said packet data network that has write down is connected changed to the multiple access state from single access state, and keeps the sign of said grouped data network gateway;
When discharging the access of an Access Network in said two Access Networks, said home subscriber server or authentication and authorization charging server change to single access state with the multiple access state of record, and keep the sign of said grouped data network gateway.
2. store method as claimed in claim 1 is characterized in that,
The mode that said grouped data network gateway notifies said home subscriber server or the said packet data network of authentication and authorization charging server to be connected to the multiple access state is; Said grouped data network gateway sends grouped data network gateway address renewal demand signalling to said home subscriber server or authentication and authorization charging server, and carries the multiple access indication.
3. store method as claimed in claim 1 is characterized in that,
Said subscriber equipment initiates to discharge the access of said 3GPP Access Network through mobile management unit, gateway and said grouped data network gateway; After said home subscriber server or authentication and authorization charging server are received the notice request signaling of said mobile management unit transmission; When detecting access state that said packet data network connects and being the multiple access state; The access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
4. store method as claimed in claim 1 is characterized in that,
When said subscriber equipment initiates to discharge the access of said non-3 GPP access network through non-3 GPP access network gateway and said grouped data network gateway; After said home subscriber server or authentication and authorization charging server are received the grouped data network gateway address update instruction of said grouped data network gateway transmission; When detecting access state that said packet data network connects and being the multiple access state; The access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
5. store method as claimed in claim 1 is characterized in that,
When said subscriber equipment directly initiates to discharge the access of said non-3 GPP access network through said grouped data network gateway; After said home subscriber server or authentication and authorization charging server are received the grouped data network gateway address update instruction of said grouped data network gateway transmission; When detecting access state that said packet data network connects and being the multiple access state; The access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
6. store method as claimed in claim 1 is characterized in that,
When said grouped data network gateway initiates to discharge the access of one of them Access Network of said two Access Networks; After said home subscriber server or authentication and authorization charging server are received the grouped data network gateway address update instruction of said grouped data network gateway transmission; When detecting access state that said packet data network connects and being the multiple access state; The access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
7. like the described store method of arbitrary claim in the claim 1 to 6, it is characterized in that,
When said subscriber equipment or said grouped data network gateway initiate to discharge the access of another Access Network; Said home subscriber server or authentication and authorization charging server are received and are discharged indication signaling and detect access state that the said packet data network of record connects when being single access state, the sign of deleting said grouped data network gateway.
8. like the described store method of arbitrary claim in the claim 1 to 6, it is characterized in that,
When said subscriber equipment inserts packet data network connection through said 3GPP Access Network or non-3 GPP access network; The access state that said home subscriber server or authentication and authorization charging server write down said packet data network connection is single access state, and preserves packet data web gateway identification;
When discharging the access of said Access Network, after said home subscriber server or authentication and authorization charging server detect access state that the said packet data network of record connects and be single access state, delete said packet data web gateway identification.
9. like the described store method of arbitrary claim in the claim 1 to 6, it is characterized in that,
The access state that said home subscriber server or authentication and authorization charging server use the said packet data network of one of following mode record to connect;
Be provided for writing down the flag bit of the access state that said packet data network connects,, write down the different access state that said packet data network connects through changing the value of this flag bit; Perhaps,
The sign of the said grouped data network gateway through storing different numbers is represented the different access state that said packet data network connects.
10. the saved system of packet data web gateway identification under the multiple access scene; Comprise grouped data network gateway and home subscriber server or authentication and authorization charging server; Said home subscriber server or authentication and authorization charging server; Being used at subscriber equipment is the 3GPP Access Network when non-3 GPP access network inserts a packet data network simultaneously and is connected through two Access Networks, preserves packet data web gateway identification; It is characterized in that,
Said grouped data network gateway; Be used for inserting said packet data network simultaneously through two Access Networks and setting up same packet data network when connecting detecting said subscriber equipment, notify the said packet data network of said home subscriber server or authentication and authorization charging server to be connected to the multiple access state;
Said home subscriber server or authentication and authorization charging server; After also being used to receive said notice; The access state that the said packet data network that has write down is connected changes to the multiple access state from single access state, and keeps the sign of said grouped data network gateway; Also be used for when the access of an Access Network of said two Access Networks is released, the multiple access state that writes down changed to single access state, and keep the sign of said grouped data network gateway.
11. system as claimed in claim 10 is characterized in that,
Said home subscriber server or authentication and authorization charging server; Also be used for initiating to discharge the access of said 3GPP Access Network through mobile management unit, gateway and said grouped data network gateway at said subscriber equipment, receive the notice request signaling that said mobile management unit sends after; Perhaps; Said subscriber equipment initiates to discharge the access of said non-3 GPP access network through non-3 GPP access network gateway and said grouped data network gateway, receive the grouped data network gateway address update instruction that said grouped data network gateway sends after; Perhaps; Said subscriber equipment initiates to discharge the access of said non-3 GPP access network through said grouped data network gateway, receive the grouped data network gateway address update instruction that said grouped data network gateway sends after; Perhaps, said grouped data network gateway initiates to discharge the access of one of them Access Network of said two Access Networks, receive the grouped data network gateway address update instruction that said grouped data network gateway sends after; When detecting access state that said packet data network connects and being the multiple access state, the access state that said packet data network is connected changes to single access state, and keeps the sign of said grouped data network gateway.
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| CN2009101361769A CN101730072B (en) | 2009-04-30 | 2009-04-30 | Packet data web gateway identification saving method and system in multi-access scene |
| PCT/CN2010/071638 WO2010124551A1 (en) | 2009-04-30 | 2010-04-08 | Method and system for preserving a packet data network gateway identifier in a multiple access scenario |
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| CN2009101361769A CN101730072B (en) | 2009-04-30 | 2009-04-30 | Packet data web gateway identification saving method and system in multi-access scene |
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| CN102348193B (en) * | 2010-07-28 | 2016-06-15 | 中兴通讯股份有限公司 | The method and system that a kind of gateway identification reports |
| CN102421155B (en) * | 2010-09-27 | 2017-03-01 | 中兴通讯股份有限公司 | A kind of method and system realizing stream migration |
| CN103002543B (en) * | 2011-09-14 | 2016-12-21 | 中兴通讯股份有限公司 | A kind of multi-access method and system |
| WO2012149793A1 (en) * | 2011-09-30 | 2012-11-08 | 华为技术有限公司 | Method for executing packet data network connection in multi-access scenario |
| CN103428684B (en) * | 2012-05-18 | 2018-05-18 | 中兴通讯股份有限公司 | The transmission method and system of a kind of gateway address information |
| CN103582160B (en) * | 2012-07-25 | 2019-05-24 | 中兴通讯股份有限公司 | Data transmission method and device |
| CN103118327A (en) * | 2013-01-25 | 2013-05-22 | 无锡万事通科技有限公司 | WiFi-based (wireless fidelity-based) information transmission system and WiFi-based information transmission method |
| CN103974384A (en) * | 2013-02-05 | 2014-08-06 | 中国移动通信集团广东有限公司 | Method, device and system for controlling multi-access-point concurrent access, and mobile terminal |
| CN104144168B (en) * | 2014-08-15 | 2017-07-18 | 深圳市蜂联科技有限公司 | Binding method based on open type intelligent Networking Platform user account and gateway device |
| JP2019149588A (en) * | 2016-07-04 | 2019-09-05 | シャープ株式会社 | Terminal device, control device, gateway, and communication control method |
| US20190313311A1 (en) * | 2018-04-09 | 2019-10-10 | Mediatek Inc. | Apparatuses, service networks, and methods for handling plmn-specific parameters for an inter-plmn handover |
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