CN104427568B

CN104427568B - A kind of method, apparatus for realizing the unloading of 3GPP network flow

Info

Publication number: CN104427568B
Application number: CN201310400024.1A
Authority: CN
Inventors: 薛莉; 杜宗鹏
Original assignee: Beijing Huawei Digital Technologies Co Ltd
Current assignee: Beijing Huawei Digital Technologies Co Ltd
Priority date: 2013-09-05
Filing date: 2013-09-05
Publication date: 2019-02-19
Anticipated expiration: 2033-09-05
Also published as: CN104427568A

Abstract

The invention discloses a kind of method, apparatus for realizing the unloading of 3GPP network flow, are related to the communications field, can utilize the flow for the special services that the unloading of non-3GPP network gateway is accessed by 3GPP network node.The described method includes: user equipment (UE) determination need to establish the carrying for accessing special services；The 3GPP network insertion node of Xiang Weiqi service sends the request of UE access non-3GPP network gateway；It is completed so that UE is established via the carrying of 3GPP network insertion non-3GPP network gateway, UE accesses the special services by establishing the carrying completed.

Description

A kind of method, apparatus for realizing the unloading of 3GPP network flow

Technical field

The present invention relates to the communications field more particularly to a kind of method, apparatus for realizing the unloading of 3GPP network flow.

Background technique

The application that can be provided on network becomes increasingly abundant, so that user is increasingly increased by the demand of connection of mobile terminal into network Greatly.In order to provide better service, at present mobile operator deployed 3GPP network+non-3 GPP network (i.e. non-3GPP, Such as WLAN) mixed networking.

User equipment (UE, user equipment) accesses there are mainly two types of the modes of internet: the first is by 3GPP Network insertion, i.e. UE can pass through whenever and wherever possible evolution base station (eNodeB, evolved NodeB), gateway (S-GW, Serving gateway), (i.e. PDN Gateway can be abbreviated as P-GW, Packet Data Network to grouped data network gateway ) etc. gateway network elements are linked into internet;Second is that internet is linked by non-3 GPP network, and usual the method can mention For more stable access bandwidth and lower price.

Wherein, for the first above-mentioned access way, if the number of users in a cell it is excessive or certain A little users occupy a large amount of bandwidth, will affect the usage experience of user's entirety.

In order to mitigate the bandwidth pressure of the 3GPP core network, provide in the prior art a kind of applied to 3GPP network In SIPTO (Selected IP Traffic Offload, select IP stream unloading) scheme, the program support user pass through The access of 3GPP network node, and come in fact by newly-increased local grouped data network gateway (L-PGW, local PDN gateway) Now unload.

Specifically, UE can be linked into mobile core network (CN, core network), the party by base station, S-GW, P-GW Mobile management entity (MME, mobility management entity) can select a L-PGW to flow in case for user The unloading of amount.

Although above-mentioned SIPTO technology can alleviate the bandwidth pressure of mobile core network to a certain extent, need It increases a network element L-PGW newly in 3GPP network, has certain influence to the current network architecture, be not easy to the tool of mobile operator Body is realized.

Summary of the invention

The embodiment of the present invention provides a kind of method and apparatus for realizing the unloading of 3GPP network flow, and user can use The flow for the special services that the unloading of non-3GPP network gateway is accessed by 3GPP network node, i.e., allowed using existing equipment The partial discharge of 3GPP network is diverted to non-3GPP network, so as to mitigate the burden of 3GPP core network, and this side Case does not influence current network framework, is conducive to operator and realizes.In addition, using the conduct of non-3GPP network gateway in the present invention The equipment for unloading 3GPP network flow, this is just the nothing realized between 3GPP network access mode and non-3GPP network access mode Seaming and cutting, which are changed, lays a good foundation, to guarantee that the special services connection of user's current accessed will not be interrupted.

In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that

In a first aspect, a kind of method for realizing the unloading of 3GPP network flow, comprising:

User equipment (UE) determination need to establish the carrying for accessing special services, and the special services are via 3GPP network With the addressable service of non-3GPP network；

The 3GPP network insertion node of Xiang Weiqi service sends the request of the UE access non-3GPP network gateway；So that It obtains the UE and establishes completion via the carrying of non-3GPP network gateway described in 3GPP network insertion；

The UE accesses the special services by establishing the carrying completed.

In the first mode in the cards, according in a first aspect,

The request of the UE access non-3GPP network gateway includes: UE mark, for being directed toward non-3GPP network gateway Access point name APN,

Alternatively, the request of the UE access non-3GPP network gateway includes: UE mark, for being directed toward non-3GPP network The APN and switching mark of gateway.

In second of mode in the cards, obtained according to first aspect or the first mode in the cards, the UE Know and save the address information of the non-3GPP network gateway of its access.

Second aspect provides a kind of method for realizing the unloading of 3GPP network flow, comprising:

3GPP network control network element receives the UE access non-3GPP network gateway sent by 3GPP network insertion node Request；

Control establishes the UE via the carrying of 3GPP network insertion non-3GPP network gateway.

In the first mode in the cards, according to second aspect,

The request of the UE access non-3GPP network gateway includes: UE mark, for being directed toward non-3GPP network gateway Access point name APN；

In second of mode in the cards, according to the first mode in the cards, the UE access non-3GPP The request of network gateway further include: the location information of 3GPP network insertion node;

Alternatively, the request of the UE access non-3GPP network gateway further include: believe the address of non-3GPP network gateway Breath.

It is described in conjunction with any mode in the cards of second aspect or first two in the third mode in the cards Control establishes the UE via the carrying of 3GPP network insertion non-3GPP network gateway and includes:

Obtain the address information of non-3GPP network gateway；

Via 3GPP network gateway, sent to the corresponding non-3GPP network gateway of address information described at least one The request of UE access non-3GPP network gateway；

Receive answer of the non-3GPP network gateway to the request；

If the carrying replied between instruction 3GPP network gateway and non-3GPP network gateway is successfully established, Establish the carrying of 3GPP network gateway described in the UE access.

In the 4th kind of mode in the cards, according to the third mode in the cards,

The address information for obtaining non-3GPP network gateway includes: to send inquiry request to dns server；It is described to look into Ask the location information that request includes: 3GPP network insertion node and the access point name for being directed toward non-3GPP network gateway APN, and receive the address information of the non-3GPP network gateway of the dns server feedback；Alternatively,

From the request of the UE access non-3GPP network gateway received, the ground of non-3GPP network gateway is read Location information；Alternatively,

Obtain the address information of preconfigured non-3GPP network gateway.

In the 5th kind of mode in the cards, according to the 4th kind of mode in the cards,

It is described to send UE access non-3GPP net to the corresponding non-3GPP network gateway of address information described at least one Network diagram close request include:

It is each described to what is got in the case where needing non-3GPP network insertion being switched to 3GPP network insertion The corresponding non-3GPP network gateway of address information sends the request of UE access non-3GPP network gateway；Otherwise, to getting The address information in a corresponding non-3GPP network gateway send the request of UE access non-3GPP network gateway.

It is described according to any mode in the cards of second aspect or first two in the 6th kind of mode in the cards Control establishes the UE via the carrying of 3GPP network insertion non-3GPP network gateway and includes:

The request of UE access non-3GPP network gateway is sent to 3GPP network gateway；So that the 3GPP network Gateway obtains the address information for itself being pre-configured with non-3GPP network gateway, and to address information pair described at least one The non-3GPP network gateway answered sends the request of UE access non-3GPP network gateway；

Receive reply of the non-3GPP network gateway to the request；

In the 7th kind of mode in the cards, according to second aspect, in the UE via described in 3GPP network insertion In the unwanted situation of the carrying of non-3GPP network gateway, the method also includes:

The UE is deleted via the carrying of 3GPP network insertion non-3GPP network gateway.

The third aspect provides a kind of method for realizing the unloading of 3GPP network flow, comprising:

Non-3GPP network gateway receives the UE access non-3GPP network gateway sent by 3GPP network gateway Request；

The reply to the request is forwarded from the 3GPP network gateway to 3GPP network control network element；So that described 3GPP network control network element indicates that the carrying between 3GPP network gateway and non-3GPP network gateway is built in described reply It stands in successful situation, the carrying of 3GPP network gateway described in the UE access is established in control.

In second of mode in the cards, according to the third aspect,

The request of the UE access non-3GPP network gateway includes: UE mark, for being directed toward non-3GPP network gateway APN；

In the third mode in the cards, according to second of mode in the cards, if the UE access non- In the request of 3GPP network gateway do not include switching mark, then the method also includes:

Establish the carrying between 3GPP network gateway and non-3GPP network gateway；

The address information for accessing the special services is distributed for the UE；

Carrying between the reply instruction 3GPP network gateway and non-3GPP network gateway of the described pair of request is built It stands successfully, and includes: for UE distribution for accessing the address information of the special services.

In the 4th kind of mode in the cards, according to the first mode in the cards, further includes:

It saves the mark for being currently accessed the UE of the non-3GPP network gateway and the UE is currently accessed mode Mark.

If being identified in the request of the UE access non-3GPP network gateway comprising switching, the method also includes:

It inquires in the current record of non-3GPP network gateway and is identified with the presence or absence of with UE consistent in the request；

If it exists, then the mark that UE is currently accessed mode is updated, and establishes 3GPP network gateway and non-3GPP Carrying between network gateway, and the address information for accessing the special services is not redistributed for the UE；It is described right The reply instruction carrying of the request is successfully established, and the address for being used to access the special services including distributing to the UE before Information.

In the 6th kind of mode in the cards, according to the 4th kind of mode in the cards, the method also includes:

The certification message that UE is sent by the access point of non-3GPP network is received, the certification message includes: the UE Mark, switching mark；

After the authentication has been successful, inquire non-3GPP network gateway current record in the presence or absence of in the certification message Consistent UE mark；

If it exists, then the mark that UE is currently accessed mode is updated, and is not redistributed for the UE for accessing the spy Surely the address information serviced；

Send certification feedback message to the UE, the certification feedback message distributed to before including the UE for accessing The address information of the special services；

Deleting bearing request is sent to 3GPP gateway, so that UE is via non-3GPP net described in 3GPP network insertion The deleting load-bearing that network diagram closes.

Fourth aspect provides a kind of user equipment (UE), comprising:

Determination unit: the carrying for accessing special services need to be established for determination, the special services are via 3GPP Network and the addressable service of non-3GPP network；

Transmission unit: for sending the UE access non-3GPP mesh network to for its 3GPP network insertion node serviced The request of pass；So that the UE is via non described in 3GPP network insertion) carrying of 3GPP network gateway establishes and completes；

Access unit: the special services are accessed by establishing the carrying completed for the UE.

In the first mode in the cards, according to fourth aspect,

In second of mode in the cards, according to fourth aspect or the first mode in the cards, further includes:

Storage unit: for knowing and saving the address information of the non-3GPP network gateway of its access.

5th aspect, provides a kind of 3GPP network control network element, comprising:

Receiving unit: for receiving asking for the UE access non-3GPP network gateway sent by 3GPP network insertion node It asks；

Control unit: the UE is established via the carrying of 3GPP network insertion non-3GPP network gateway for controlling.

In the first mode in the cards, in terms of the 5th,

In second of mode in the cards, according to the first mode in the cards,

The request of the UE access non-3GPP network gateway further include: the location information of 3GPP network insertion node;

In the third mode in the cards, according to the 5th aspect or any first two mode in the cards,

The 3GPP network control network element further include: the first transmission unit, first transmission unit are used for at least one The corresponding non-3GPP network gateway of a address information sends the request of UE access non-3GPP network gateway；

Described control unit includes: to obtain module, the first transmission control module, the first bearer management module；Wherein,

Obtain module: for obtaining the address information of non-3GPP network gateway；

First sends control module: for controlling first transmission unit via 3GPP network gateway, at least The corresponding non-3GPP network gateway of one address information sends the request of UE access non-3GPP network gateway；

The receiving unit is also used to receive answer of the non-3GPP network gateway to the request；

First bearer management module: for indicating 3GPP network service network in the answer received by the receiving unit In the case that carrying between pass and non-3GPP network gateway is successfully established, 3GPP network service described in the UE access is established The carrying of gateway.

In the 4th kind of mode in the cards, according to the third mode in the cards, the acquisition module is specifically used In:

Inquiry request is sent to dns server；The inquiry request include: 3GPP network insertion node location information and For being directed toward the access point name APN of non-3GPP network gateway, and receive the non-3GPP network of the dns server feedback The address information of gateway；Alternatively,

From the request for the UE access non-3GPP network gateway that receiving unit receives, non-3GPP network is read The address information of gateway；Alternatively,

Obtain the address information of preconfigured non-3GPP network gateway.

In the 5th kind of mode in the cards, according to the 4th kind of mode in the cards, described first sends control mould Block is specifically used for:

In the case where needing non-3GPP network insertion being switched to 3GPP network insertion, controls described first and send list The corresponding non-3GPP network gateway of each address information that member is got to the acquisition module, sends UE access non- The request of 3GPP network gateway；Otherwise, first transmission unit is controlled to believe to the address that the acquisition module is got A corresponding non-3GPP network gateway in breath sends the request of UE access non-3GPP network gateway.

It is described according to the 5th aspect or any first two mode in the cards in the 6th kind of mode in the cards 3GPP network control network element further include: the second transmission unit, for sending UE access non-3GPP to 3GPP network gateway The request of network gateway；

Described control unit includes: the second transmission control module, the second bearer management module；

The second transmission control module: UE is sent to 3GPP network gateway for controlling second transmission unit Access the request of non-3GPP network gateway；So that the 3GPP network gateway obtains itself and is pre-configured with non-3GPP The address information of network gateway, and UE access is sent to the corresponding non-3GPP network gateway of address information described at least one The request of non-3GPP network gateway；

The receiving unit: it is also used to receive reply of the non-3GPP network gateway to the request；

The second bearer management module: if for indicating 3GPP network clothes in answer received by the receiving unit Carrying between business gateway and non-3GPP network gateway is successfully established, then establishes 3GPP network service network described in the UE access The carrying of pass.

In the 7th kind of mode in the cards, according to the 5th aspect, described control unit is also used to:

In the UE via in the unwanted situation of carrying of non-3GPP network gateway described in 3GPP network insertion, delete The UE via 3GPP network insertion non-3GPP network gateway carrying.

6th aspect, provides a kind of non-3GPP network gateway, comprising:

Receiving unit: for receiving asking for the UE access non-3GPP network gateway sent by 3GPP network gateway It asks；

Transmission unit: for being returned from the 3GPP network gateway to the forwarding of 3GPP network control network element to the request It is multiple；So that the 3GPP network control network element indicates 3GPP network gateway and non-3GPP network gateway in the answer Between carrying be successfully established in the case where, the carrying of 3GPP network gateway described in the UE access is established in control.

In the first mode in the cards, in terms of the 6th,

Or, comprising: UE mark, the APN for being directed toward non-3GPP network gateway and switching mark.

In second of mode in the cards, in conjunction with the first mode in the cards, further includes:

First establishes load bearing unit: for establishing holding between 3GPP network gateway and non-3GPP network gateway It carries；

Allocation unit: for distributing the address information for accessing the special services for the UE；

In the third mode in the cards, in conjunction with the 6th aspect, further includes:

Storage unit: mark and the UE for saving the UE being currently accessed are currently accessed the mark of mode.

In the 4th kind of mode in the cards, in conjunction with the third mode in the cards, further includes:

First query unit: it is identified for inquiring in current record with the presence or absence of with UE consistent in the request；

First updating unit: for first query unit inquire there are consistent UE mark in the case where, more UE in new storage unit is currently accessed the mark of mode；

Second establishes load bearing unit: for establishing holding between 3GPP network gateway and non-3GPP network gateway It carries；

The reply instruction carrying of the described pair of request is successfully established, and including distributing to the described for accessing of the UE before The address information of special services；Wherein, the non-3GPP network gateway is not that the UE is redistributed for accessing the spy Surely the address information serviced.

In the 5th kind of mode in the cards, in conjunction with the third mode in the cards, further includes: the second cargo tracer Member, the second updating unit；

The receiving unit is also used to: the certification message that UE is sent by the access point of non-3GPP network is received, it is described Certification message includes: the mark of the UE, switching mark；

Second query unit: for after the authentication has been successful, inquiring in the current record of non-3GPP network gateway to be It is no to exist and UE consistent in certification message mark；

Second updating unit: for second query unit inquire there are consistent UE mark in the case where, more UE in new storage unit is currently accessed the mark of mode；

The transmission unit is also used to: certification feedback message is sent to the UE, before the certification feedback message includes Distribute to the address information for being used to access the special services of the UE；Wherein, the non-3GPP network gateway is not described UE redistributes the address information for accessing the special services；

The transmission unit is also used to: deleting bearing request is sent to 3GPP gateway, so that UE is via 3GPP net Network accesses the deleting load-bearing of the non-3GPP network gateway.

A kind of method, apparatus for realizing the unloading of 3GPP network flow provided in an embodiment of the present invention, using non-3GPP net Network diagram closes the equipment as relieving flowing volume, that is, passes through the flow of non-3GPP network shunt 3GPP network, so as to mitigate The burden of 3GPP core network, and this scheme does not influence current network framework, is conducive to operator and realizes.In addition, this hair The bright middle equipment using non-3GPP network gateway as unloading 3GPP network flow, this is just to realize 3GPP network access mode Seamless switching between non-3GPP network access mode is laid a good foundation, to guarantee the company of the special services of user's current accessed Connecing will not interrupt.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is the signal that user equipment accesses special services by 3GPP network and non-3GPP network in the prior art Figure；

Fig. 2 is the schematic diagram for the way access special services that user equipment provides through the embodiment of the present invention；

Fig. 3 is a kind of method for realizing the unloading of 3GPP network flow provided in an embodiment of the present invention；

Fig. 4 is the schematic diagram for another way access special services that user equipment provides through the embodiment of the present invention；

Fig. 5 is another corresponding flow chart of method for realizing the unloading of 3GPP network flow provided in an embodiment of the present invention；

Fig. 6 is another corresponding flow chart of method for realizing the unloading of 3GPP network flow provided in an embodiment of the present invention；

Fig. 7 is another corresponding flow chart of method for realizing the unloading of 3GPP network flow provided in an embodiment of the present invention；

Fig. 8 is a kind of user equipment schematic diagram provided in an embodiment of the present invention；

Fig. 9 is another user equipment schematic diagram provided in an embodiment of the present invention；

Figure 10 is a kind of 3GPP network control network element schematic diagram provided in an embodiment of the present invention；

Figure 11 is another kind 3GPP network control network element schematic diagram provided in an embodiment of the present invention；

Figure 12 is another kind 3GPP network control network element schematic diagram provided in an embodiment of the present invention；

Figure 13 is a kind of non-3GPP network gateway schematic diagram provided in an embodiment of the present invention；

Figure 14 is another kind non-3GPP network gateway schematic diagram provided in an embodiment of the present invention；

Figure 15 is another kind non-3GPP network gateway schematic diagram provided in an embodiment of the present invention；

Figure 16 is another kind non-3GPP network gateway schematic diagram provided in an embodiment of the present invention；

Figure 17 is another user equipment schematic diagram provided in an embodiment of the present invention；

Figure 18 is another kind 3GPP network control network element schematic diagram provided in an embodiment of the present invention；

Figure 19 is another kind non-3GPP network gateway schematic diagram provided in an embodiment of the present invention.

Specific embodiment

With reference to the accompanying drawing to the methods, devices and systems of realization 3GPP network flow unloading provided in an embodiment of the present invention It is described in detail.

The embodiment of the present invention is applied to the scene of 3GPP network and non-3GPP network hybrid networking, exemplary, above-mentioned 3GPP network includes but is not limited to wideband code division multiple access (WCDMA, Wideband Code Division Multiple Access) CDMA (TDSCDMA, Time Division) Synchronous Code of network, time division synchronous Division Multiple Access) network, long-term evolving network (LTE, Long Term Evolution), non-3GPP Network includes but is not limited to WLAN (WLAN, Wireless Local Aero Network), WiMAX.

As shown in Figure 1, in the prior art, UE can pass through 3GPP net under the management control of 3GPP network control network element The equipment such as network access node, 3GPP gateway access special services, i.e. a access in Fig. 1.The special services be via 3GPP network and the addressable service of non-3GPP network, exemplary, above-mentioned special services can be Internet.To retouch For the sake of stating conveniently, described by taking Internet as an example in an embodiment of the present invention.It is, of course, also possible to pass through non-3GPP net The equipment such as network access point, non-3GPP gateway access special services, i.e. b access in Fig. 2.

In order to realize that 3GPP network flow unloads using non-3GPP network gateway, the present invention provides a kind of realization 3GPP The method of network flow unloading, establishes the c access in Fig. 2.As shown in figure 3, the method specifically includes:

S001, UE determination need to establish the carrying for accessing Internet.

For example, then UE determination need to be established for accessing Internet when user triggers the shortcut of the browser of UE Carrying.For another example, when user by UE access Internet when, if UE discovery can carry out network switching (usually by Non) b access is switched to c access to 3GPP network, corresponding diagram 2 by 3GPP network switching), then UE determination need to be established for visiting Ask the carrying of Internet.

S002, UE send the request of UE access non-3GPP network gateway to 3GPP network insertion node for its service.

Optionally, if this time establishing carrying to be first, the request of the UE access non-3GPP network gateway includes: UE Mark, the access point name APN for being directed toward non-3GPP network gateway.Alternatively, it is optional, if this time for due to network switching Need to establish carrying, then the request of the UE access non-3GPP network gateway includes: UE mark, for being directed toward non-3GPP net The APN and switching mark that network diagram closes.

It is further alternative, if this time to need to establish carrying because of network switching, and can know simultaneously before UE The address information of the non-3GPP network gateway of its access is saved, then the request of the UE access non-3GPP network gateway may be used also To include: the address information of non-3GPP network gateway.Certainly, if UE can not know the non-3GPP network gateway of its access Address information, then the address information of non-3GPP network gateway can obtain in the next steps.

The request of UE access non-3GPP network gateway is sent to 3GPP network-control by S003,3GPP network insertion node Network element.

Optionally, received request directly can be transmitted to 3GPP network-control net by 3GPP network insertion node Member.Alternatively, optional, 3GPP network insertion node is sent to 3GPP network control after being handled received request Network element processed.Wherein, the process of processing can be the location information of addition itself, be can also be at the routines such as increase and decrease packet header certainly Reason.

By above-mentioned S003,3GPP network control network element has been received by the request of 3GPP network insertion node transmission.It Afterwards, 3GPP network control network element control establishes the UE via the carrying of 3GPP network insertion non-3GPP network gateway, specifically , comprising: S004-S012；Wherein, S004 is optional step.

The address information of the available non-3GPP network gateway of S004,3GPP network control network element.

The address information for obtaining non-3GPP network gateway includes the following three types optional mode:

Mode 1:3GPP network control network element sends inquiry request to dns server；The inquiry request includes: 3GPP net The location information of network access node and access point name APN for being directed toward non-3GPP network gateway, and receive the DNS clothes The address information of the non-3GPP network gateway for device feedback of being engaged in.

Mode 2:3GPP network control network element is read from the request of the UE access non-3GPP network gateway received Take the address information of non-3GPP network gateway.This mode refers specifically in 3GPP access node static configuration non-3GPP The case where IP address of network gateway.

Mode 3:3GPP network control network element obtains the address information of preconfigured non-3GPP network gateway.This side Formula refers specifically in 3GPP network control network element the case where static configuration IP address of non-3GPP network gateway.

S005,3GPP network control network element send asking for UE access non-3GPP network gateway to 3GPP network gateway It asks.

It optionally, include the IP address of at least one non-3GPP network gateway in above-mentioned request.

Alternatively, it is optional, if 3GPP network control network element is by prior configuration it is found that quiet in 3GPP network gateway State is configured with the IP address of non-3GPP network gateway, and therefore, 3GPP network control network element is sent to 3GPP network gateway UE access non-3GPP network gateway request in, the IP address of non-3GPP network gateway is default.S004 at this time It is not required.

Correspondingly, 3GPP network gateway receives the UE access non-3GPP mesh network that 3GPP network control network element is sent The request of pass.

The address of S006,3GPP network gateway acquisition non-3GPP network gateway.

Optionally, if in the request for the UE access non-3GPP network gateway that 3GPP network gateway receives from it The IP address of at least one non-3GPP network gateway is got, then 3GPP network gateway is to the IP address got Corresponding non-3GPP network gateway sends the request of UE access non-3GPP network gateway.

Alternatively, it is optional, if the UE access non-3GPP network gateway that 3GPP network gateway receives from it The IP address of non-3GPP network gateway has not been obtained in request, then 3GPP network gateway obtains itself and is pre-configured with non- The IP address of 3GPP network gateway, and UE access is sent to the corresponding non-3GPP network gateway of IP address described at least one The request of non-3GPP network gateway.

It should be noted that in the case where needing non-3GPP network insertion being switched to 3GPP network insertion, if UE The address of the non-3GPP network gateway connected before not saving, then the non-3GPP net that 3GPP network gateway is got The IP address that network diagram closes may be one, it is also possible to multiple.

S007,3GPP network gateway send UE access non-3GPP network at least one non-3GPP network gateway The request of gateway.

Correspondingly, non-3GPP network gateway receives the UE access non-3GPP network of 3GPP network gateway transmission The request of gateway.

At request of S008, non-3GPP network gateway according to the UE access non-3GPP network gateway received Reason.

If not including switching in the request of the received UE access non-3GPP network gateway of non-3GPP network gateway Mark, specifically, non-3GPP network gateway need to do following operation:

Firstly, establishing the carrying between 3GPP network gateway and non-3GPP network gateway；

Secondly, distributing the address information for accessing the special services for the UE；

Then, holding between 3GPP network gateway and non-3GPP network gateway is being indicated in the reply to the request Load is successfully established, and includes: for UE distribution for accessing the address information of the special services.

And optional, non-3GPP network gateway can also save the institute for being currently accessed the non-3GPP network gateway The mark and the UE of stating UE are currently accessed the mark of mode.

If comprising switching mark in the request of the UE access non-3GPP network gateway, specifically, non-3GPP network Gateway need to do following operation:

It inquires in the current record of non-3GPP network gateway and is identified with the presence or absence of with UE consistent in the request；If depositing The mark that UE is currently accessed mode is then being updated, and establish carrying, and do not redistribute for the UE for accessing the spy Surely the address information serviced；The reply instruction carrying of the described pair of request is successfully established, and the use including distributing to the UE before In the address information for accessing the special services.

S009, non-3GPP network gateway send the reply to above-mentioned request to 3GPP network gateway.

S010,3GPP network gateway are handled according to the reply received.

Specifically, 3GPP network gateway receives reply of the non-3GPP network gateway to above-mentioned request, if institute It states and indicates that the carrying between 3GPP network gateway and non-3GPP network gateway is successfully established in replying, then need through later Continuous step establishes the carrying of 3GPP network gateway described in the UE access.Processing in this step, which can be, to be received The address information for accessing the special services is added in reply.

The reply of above-mentioned request after S011,3GPP network gateway are processed to is sent to 3GPP network-control net Member.

S012,3GPP network control network element control the carrying for establishing 3GPP network gateway described in the UE access.

Specifically, if the received answer instruction 3GPP network gateway of 3GPP network control network element and non-3GPP network Carrying between gateway is successfully established, then the carrying of 3GPP network gateway described in the UE access is established in control.

S013, the UE access the Internet by establishing the carrying completed.

Optionally, if this time establishing carrying to be first, the UE this can be its point by non-3GPP network gateway That matches is used to access the address information of Internet, accesses Internet；Alternatively, it is optional, if this time for due to network switching Need to establish carrying, then the UE can be by being its distribution before non-3GPP network gateway for accessing the ground of Internet Location information accesses Internet, to guarantee that switching not will lead to the interruption of communication.

A kind of method for realizing the unloading of 3GPP network flow provided in an embodiment of the present invention, using non-3GPP network gateway As the equipment of relieving flowing volume, that is, pass through the flow of non-3GPP network shunt 3GPP network, so as to mitigate 3GPP core The burden of network, and this scheme does not influence current network framework, is conducive to operator and realizes.

By above-mentioned each step, UE can access Internet using the c access in Fig. 2.

It is exemplary there is also another switch instances, after UE is using the c access access Internet in Fig. 2, if UE It was found that eligible non-3GPP network, then can also be switched to b access by the c access in Fig. 2.

Specific steps are as follows:

1) UE sends certification message via non-3GPP network gateway by the access point of non-3GPP network and takes to certification Business device, the certification message include: the mark of the UE, switching mark.

2) certificate server authenticates message based on the received and is authenticated, and after certificate server authenticates successfully, will recognize Card feedback message is sent to non-3GPP network gateway.

3) non-3GPP network gateway is inquired in its current record and is marked with the presence or absence of with UE consistent in the certification message Know.If it exists, then the mark that UE is currently accessed mode is updated, and is not redistributed for the UE for accessing the special services Address information.

4) non-3GPP network gateway sends certification feedback message to the UE, and the certification feedback message divides before including The address information for being used to access the special services of the dispensing UE.

5) non-3GPP network gateway sends deleting bearing request to 3GPP gateway, so that UE is via 3GPP network Access the deleting load-bearing of the non-3GPP network gateway.

A kind of method for realizing the unloading of 3GPP network flow provided in an embodiment of the present invention, using non-3GPP network gateway As the equipment of relieving flowing volume, that is, pass through the flow of non-3GPP network shunt 3GPP network, so as to mitigate 3GPP core The burden of network, and this scheme does not influence current network framework, is conducive to operator and realizes.In addition, being used in the present invention Equipment of the non-3GPP network gateway as unloading 3GPP network flow, this is just to realize 3GPP network access mode and non- Seamless switching between 3GPP network access mode is laid a good foundation, to guarantee that the connection of special services of user's current accessed will not It interrupts.

The present invention provides another methods for realizing the unloading of 3GPP network flow, wherein respectively with LTE network and WLAN For be illustrated, the node of 3GPP network insertion at this time be evolved base station (eNodeB, Evolved Node B), 3GPP network Control network element be MME, 3GPP network gateway be S-GW, non-3GPP network gateway be wideband network gateway (BNG, Broadband Network Gateway)。

Internet part flow is accessed in order to unload UE by 3GPP network, the embodiment of the present invention is described as follows Method, establish in Fig. 4 and to be connected shown in c ' line direction, i.e., access the stream of Internet by 3GPP network using BNG unloading Amount, above-mentioned BNG is the function of realizing above-mentioned unloading, need to realize P-GW function on the basis of existing BNG.

It should be pointed out that establishing in Fig. 4 in connection procedure shown in c ' line direction, UE access non-3GPP network gateway Request do not imply that a specific request, be the general designation to one kind request, that is to say, that c ' the line direction in establishing Fig. 4 Shown in connection procedure, need under the control of MME, the carrying of foundation includes: carrying between UE and eNodeB, eNodeB It is general to establish specific request used by carrying between different network elements for carrying, S-GW between S) GW and the carrying between BNG It is different (the different request of the instruction information of carrying is also different requests), but its purpose contributes to make UE access non- 3GPP network gateway.It when specific steps are described below, for clarity avoids confusion, directlys adopt to establish between different network elements and hold The request used is carried to be described.

Also, the request of UE access non-3GPP network gateway is by any one of eNodeB, MME, S-GW, BNG When network element, the processing that said network element carries out includes: the conventional treatments such as increase and decrease packet header, and then just by treated, above-mentioned request turns Hair, this processing is conventional treatment in the prior art, therefore in the present embodiment, to the conventional treatment of this network element without detailed Thin description.Further, said network element is also possible to be added or removed from the processing of certain parameters as the case may be.

Specific steps are as shown in Figure 5:

S101:UE sends PDN connection request to eNodeB.

Above-mentioned PDN connection request is the request of UE access non-3GPP network gateway.

UE adds access point name (APN, access point name) information in above-mentioned PDN connection request.It is above-mentioned APN can represent a kind of service, i.e. direction BNG (may only exist an above-mentioned BNG, it is also possible to which there are multiple above-mentioned BNG), show Example, the format of above-mentioned APN can mark are as follows: offload BNG.

S102:eNodeB is handled according to its received PDN connection request.

Specifically, the location information of itself is added in the request, then after eNodeB receives PDN connection request PDN connection request after being processed to is sent to MME.

Optionally, above-mentioned location information include: Tracking Area Code (TAI(Tracking Area Identity) or ENodeB identifies (ID(identity).

PDN connection request after S103:eNodeB is processed to is sent to MME.

S104:MME receives the PDN connection request that eNodeB is sent according to it and is handled.

In general, the session of creation is a carrying, i.e. default bearing, can also be established under this session later newly Dedicated bearer.

Specifically, knowing UE according to the APN in PDN connection request after MME receives the PDN connection request that eNodeB is sent Wish the information by BNG relieving flowing volume, therefore MME need to know the IP address of above-mentioned BNG.Exemplary, MME knows the IP of BNG The mode of address includes following four (being configured in advance using one such):

Principle mode 1, MME nearest according to geographical location, the dynamic IP for obtaining BNG.

After MME receives above-mentioned PDN connection request, above-mentioned APN information and location information are obtained from above-mentioned request, and will be upper It states information and is all sent to domain name system (DNS, domain name system) server, location information is passed through by dns server, Above-mentioned APN is parsed, the IP address of above-mentioned BNG is obtained.

The specific method that the IP address of above-mentioned BNG is obtained to dns server is described in detail below:

First: a special APN can be defined, which can represent a kind of service, i.e. direction BNG (may be only existed One above-mentioned BNG, it is also possible to which there are multiple above-mentioned BNG), exemplary, the format of above-mentioned APN can mark are as follows: Offload BNG。

Secondly: BNG needs are registered in the dns server of operator in advance, and include BNG in the registration information of the BNG IP address and location information, the registration information of at least one BNG form BNG list.The position letter of BNG in above-mentioned BNG list Breath can be the eNodeB ID of TAI (Tracking area identity) or BNG ownership.

Dns server receives the location information of the APN and eNodeB with offload BNG label of MME transmission, leads to Parsing APN information is crossed, learns that above-mentioned APN is directed toward BNG, then searches BNG list, and location information based on the received, find geography The nearest BNG in position.Above-mentioned BNG may only exist one, it is also possible to there are it is multiple (at this time on the above-mentioned position UE it is multiple The region of BNG alternate covering), the IP address of the BNG for the condition that meets only need to be all reported to MME by dns server.

The IP address of mode 2, in the enodeb static configuration BNG.

According to the IP address of static configuration BNG in the enodeb, then according to the network planning as a result, obtaining above-mentioned The corresponding BNG in the overlay area eNodeB, and by configuration in the enodeb.The corresponding BNG of one eNodeB can be one, It can be multiple (the alternate covering regions that eNodeB is located at multiple BNG).

If MME obtains the IP address of BNG, above-mentioned S102 using aforesaid way 2 further include: eNodeB will meet condition The IP address addition of BNG is sent to MME in above-mentioned PDN connection request.

After MME receives the PDN connection request that eNodeB is sent, know that UE wishes to pass through according to the APN in PDN connection request The information of BNG relieving flowing volume, therefore MME learns the IP address that need to know above-mentioned BNG, further, MME is from PDN connection request In, obtain the IP address of the BNG for the condition that meets.

Mode 3, in MME static configuration BNG IP address.

According to the IP address of the static configuration BNG in MME, then according to the network planning as a result, can be using MME as particle Degree configuration, i.e., each MME only save the IP address of a BNG, or using eNodeB as granularity, i.e., include one in each MME A list, wherein including the corresponding BNG of each eNodeB and the eNodeB for belonging to above-mentioned MME.MME is according to above-mentioned eNodeB Location information, selection meet the BNG of condition, and above-mentioned BNG can be one, are also possible to that multiple (eNodeB is located at multiple BNG's Alternate covering region).

After MME receives the PDN connection request that eNodeB is sent, know that UE wishes to pass through according to the APN in PDN connection request The information of BNG relieving flowing volume, therefore MME learns the IP address that need to know above-mentioned BNG, further, above-mentioned column of the MME from itself Selection meets the IP address of the BNG of condition in table.

MME gets the IP address of the BNG of the condition of satisfaction, if above-mentioned using any one in aforesaid way 1-3 The IP address of BNG is more than one, then MME need to select one from above-mentioned IP address, and exemplary, MME can always select full First in list in the BNG of sufficient condition.

MME is by the IP address addition of above-mentioned BNG in creation session request.

Mode 4, in S-GW static configuration BNG IP address.

Concrete configuration method is identical as configuration method described in the above method 3.

After MME receives the PDN connection request that eNodeB is sent, know that UE wishes to pass through according to the APN in PDN connection request The information of BNG relieving flowing volume, MME knows that S-GW has been configured with the IP address of relevant BNG at this time, therefore MME will create meeting The IP address of BNG in words request is set as empty.

S105, MME send creation session request to S-GW.

The creation session request that above-mentioned MME is sent to S-GW is the request of UE access non-3GPP network gateway.

S106, S-GW create session request based on the received and are handled.

Specifically, MME obtains the IP address of BNG and addition exists if MME is using the ways and means 1-3 in S104 S-GW is sent in creation session request, S-GW can obtain the IP address of BNG from creation session request；

If MME receives the creation session request that MME is sent using the ways and means 4 in S104, S-GW, and it was found that The IP address of BNG in this request is set as empty, then further, S-GW is from the configured list of itself in the IP address of BNG Obtain the address for the condition that meets.

If the IP address of above-mentioned BNG is more than one, S-GW need to select one from above-mentioned IP address, exemplary, S-GW can always select to meet first in the list in the BNG of condition.

S107, S-GW send creation session request to above-mentioned BNG according to the IP address of the BNG of acquisition.

S108, BNG are handled according to the creation session request received.

After above-mentioned BNG receives above-mentioned creation session request, need to make answer, example to received creation session request , the answer for creating session request can be Create Session Response, wherein including session establishment success or meeting Words establish the mark of failure.

In general, establishing under PDN connection is that session establishment successfully identifies, the processing that BNG is carried out includes:

1) carrying between S-GW is established.

2) IP address is distributed to above-mentioned UE, and this address accesses Internet by above-mentioned BNG for UE, then above-mentioned wound Building in the answer of session request further includes this IP address.

3) mark and current connection type for recording above-mentioned UE identify, and current connection type mark is used to indicate current Above-mentioned BNG is accessed using eNodeB or WLAN.

S109, BNG send the answer of above-mentioned creation session request to S-GW.

The answer that S110, S-GW create session request based on the received is handled.

Specifically, if S-GW is to its received creation session request using any one in aforesaid way 1-3 Answer is handled, and the IP address of the current BNG for establishing carrying can not be carried in above-mentioned request at this time, because MME has known This information of road；

If using aforesaid way 4, S-GW can be added the IP address of the current BNG for establishing carrying in above-mentioned wound It builds in the answer of session request, so that MME understands the BNG of current UE connection.

The answer of treated above-mentioned creation session request is sent to MME by S111, S-GW.

S112, MME are controlled and are established between corresponding eNodeB and S-GW according to the answer of the creation session request received Carrying and UE and eNodeB between carrying.

Optionally, if UE and network support correlation function, MME establishes the carrying between eNodeB and S-GW in control And when radio bearer between UE and eNodeB, the IP address that BNG can also be carried in instruction information accordingly be sent to UE, UE can obtain IP address and the preservation of BNG from above-mentioned request.

Above-mentioned UE establishes connection shown in b line direction in Fig. 1 at this time, has unloaded UE by above-mentioned BNG and has accessed Internet Flow.

According to method as described above, there is also the following two kinds handoff scenarios:

Handoff scenario 1: as shown in figure 4, UE has built up the connection in b ' line direction, BNG, access are accessed by WLAN Internet.When UE detects above-mentioned WLAN signal intensity lower than threshold value, then not for the connection of the above-mentioned access Internet of guarantee It interrupts, UE will initiate to be switched to the switching flow of eNodeB access way (to establish c ' line direction in Fig. 4 by WLAN access way Connection come continue access Internet.

The specific steps of handoff scenario 1 are as shown in Figure 6:

S201, UE send PDN connection request to eNodeB.

The mark of an instruction switching request can be carried in above-mentioned request, it is exemplary, it can be Handover Indication。

When above-mentioned UE detects above-mentioned WLAN signal intensity lower than threshold value, for the Internet connection for guaranteeing current accessed Continuity, it is desirable to be switched to by WLAN access BNG mode and BNG mode is accessed by eNodeB.

The eNodeB that UE belongs to it sends PDN connection request, and UE will carry relevant information, above-mentioned phase in above-mentioned request Closing information includes APN information.

Optionally, above-mentioned relevant information can also include location information.

Or it is optional, if UE can obtain the IP address of BNG and above-mentioned PDN connection request message quilt from WLAN The IP address of carrying BNG is supported in extension, then above-mentioned relevant information may include the IP address of BNG.

S202, eNodeB are handled according to its received PDN connection request.

Specifically, the location information of itself is added in the request after eNodeB receives PDN connection request.It is optional , above-mentioned location information may include: Tracking Area Code (TAI(Tracking Area Identity) or eNodeB mark (ID(identity).

PDN connection request after S203, eNodeB are processed to is sent to MME.

S204, MME are handled according to its received PDN connection request.

Specifically, MME obtains information from PDN connection request:

If directly including the IP address of BNG in the information of above-mentioned acquisition, the IP address of above-mentioned BNG is unique at this time；

If there is no the IP address of BNG in the information of above-mentioned acquisition, but available APN information and location information (wherein position Confidence breath is only provided in mode 1), then APN information and location information are used, according to appointing for preceding four kinds of methods of above-mentioned S104 description It anticipates a kind of (being configured in advance using one such), knows the IP address of BNG:

If the IP address of any one BNG known in MME employing mode 1-3, the IP address for the BNG known can It can be one or more, (information that MME is obtained from PDN connection request is also unlike non-switching PDN connection foundation It whether is the mark switched including current PDN connection request, so that MME can know whether current PDN connection request is cut Change), MME does not do selection operation at this time, and MME adds the IP address of all BNG for meeting condition in above-mentioned creation session request In.

If the IP address for the BNG that MME employing mode 4 is known, MME can know UE according to the APN in PDN connection request Wish the information by BNG relieving flowing volume, MME knows that S-GW has been configured with the IP address of relevant BNG, therefore MME at this time The IP address of BNG in creation session request is set as empty.

Creation session request after S205, MME are processed to is sent to S-GW.

S206, S-GW are handled according to its received creation session request.

Specifically, if S-GW can obtain the IP address of BNG, the IP of the BNG obtained at this time from creation session request Address may be one or more；

If MME is in S204,4 by the way of in S104, then S-GW receives the creation session request that MME is sent, and And find that the IP address of the BNG in this request is set as empty, then further, the IP of S-GW BNG from the configured list of itself It is obtained in address and meets condition address, the IP address of the BNG obtained at this time may be one or more.

Creation session request after S207, S-GW are processed to is sent to BNG.

S208, BNG are handled according to its received creation session request.

Specifically, after BNG receives above-mentioned creation session request, the mark of the UE of itself current record and current will be checked Connection type mark, and make the following judgment:

If BNG has found that one of UE mark of current record is identical with the UE mark for sending above-mentioned creation session request, BNG establishes the carrying between S-GW, and BNG carries road construction success flag in the answer of above-mentioned creation session request.

It primarily points out, BNG is known by current connection type mark and currently connected after finding the mark of UE The mode of connecing can learn currently it is what kind of a kind of access form, above two access form needs from BNG different interfaces into Enter, therefore BNG need to be switched to flow new carrying after carrying establishes, and original session is discharged.

Then, BNG updates the corresponding connection type mark of above-mentioned UE.

If BNG does not find the UE mark for sending above-mentioned creation session request in the UE mark of current record, Upper road construction is carried in the answer of above-mentioned creation session request unsuccessfully to identify.

Because the BNG that UE is currently connected only one, only exist a BNG in the answer of above-mentioned creation session request Middle carrying road construction success flag, which will not distribute the IP address of new access Internet to above-mentioned UE, but adopts UE and work as The preceding IP address using above-mentioned access Internet, therefore ensure that the continuity of UE current Internet connection.

S209, BNG send the answer to above-mentioned creation session request to S-GW.

The answer that S210, S-GW create session request based on the received is handled.

Specifically, the answer of the received creation session request of S-GW may be one, it is also possible to it is multiple, but wherein only have The answer for the creation session request that one BNG is sent carries road construction success flag and BNG is the access Internet of UE distribution IP address.

For in answer message carry road construction success flag BNG, and use aforesaid way 4 the case where, S-GW need Further the IP address of this BNG is added in the answer of above-mentioned creation session request, so as to MME it will be seen that current UE connects The BNG connect.

The answer of creation session request after S211, S-GW are processed to is sent to MME.

S212, MME control the carrying established between eNodeB and S-GW according to the answer of its received creation session request And the carrying between UE and eNodeB.

By above step S201-S212, above-mentioned UE will access the mode of above-mentioned BNG from WLAN, be switched to by eNodeB The mode of above-mentioned BNG is accessed, while ensuring the continuity of above-mentioned Internet connection.

Handoff scenario 2: as shown in figure 4, UE has built up the connection in b ' line direction, BNG is accessed by eNodeB, and access Internet, but when above-mentioned UE detects that above-mentioned WLAN signal intensity is greater than or equal to threshold value, then UE will initiate to be connect by eNodeB Enter the switching flow that mode is switched to WLAN access way, continues to access Internet to establish the connection in c ' line direction.

As shown in fig. 7, specific step is as follows for handoff scenario 2:

S301, UE are associated with the access point (AP, Access Point) of WLAN.

When above-mentioned UE detects that above-mentioned WLAN signal intensity is greater than or equal to threshold value, it is desirable to access BNG by current eNodeB Mode, which is switched to, accesses BNG mode by WLAN.Then UE first associate with WLAN AP (this step be the prior art, herein no longer Repeat detailed process).

S302, UE send certification message to BNG.

Exemplary, in the present embodiment by taking this authentication mode of EAP-SIM/AKA/AKA ' as an example, UE sends certification to BNG and disappears It ceases, includes Handover Indication in above-mentioned certification message.

Its received certification message is sent to certificate server by S303, BNG.

After BNG receives above-mentioned certification message, the mark and connection type (switching request) of UE can be recognized.BNG Above-mentioned certification message is sent to certificate server (specific verification process is the prior art, and details are not described herein again).

S304, certificate server carry out authentication processing according to its received certification message.

S305, certificate server are sent to BNG for feedback message is authenticated.

S306, BNG are handled according to its received certification feedback message.

Specifically, BNG receive certificate server transmission certification feedback message after, if feedback message instruction certification at Function, then BNG searches the UE mark of its current record, if finding the UE of one of UE mark of its current record and above-mentioned initiation certification Identify identical, then the IP address that BNG can adopt current access Internet (distributes current access to UE to UE The IP address of Internet), it is ensured that the continuity of the connection of Internet is accessed before.

S307, BNG to UE send treated certification feedback message.

In treated certification feedback message may include BNG distribute to UE for accessing the IP of Internet Location.

S308, BNG send deleting bearing request to S-GW.

BNG by knowing that connection type indicated by switching request, currently from S-GW access carrying flow It is switched to from WLAN and accesses, and BNG updates the corresponding connection type mark of above-mentioned UE.

BNG sends deleting bearing request to S-GW, exemplary, and above-mentioned deleting bearing request can be Delete Bearer Request。

S309, UE are handled according to the certification feedback message of its received BNG.

Specifically, UE receive BNG certification feedback message, therefrom obtain access Internet IP address, and if it The IP address of preceding access Internet is identical, then UE is also accessed currently WLAN is switched to by the flow that eNodeB is accessed.

Deleting bearing request is handled based on the received by S310, S-GW.

Deleting bearing request after S311, S-GW are processed to is sent to MME.

S312, MME are handled according to its received deleting bearing request.

Specifically, after MME receives deleting bearing request, control delete between eNode and S-GW and UE and eNodeB it Between carrying.

S313, MME are responded to S-GW feedback deleting bearing.

Exemplary, above-mentioned deleting bearing response can be Delete Bearer Response.

Deleting bearing response is sent to BNG by S314, S-GW.

By above step S301-S314, above-mentioned UE will access the state of above-mentioned BNG from eNodeB, be switched to by WLAN The state of above-mentioned BNG is accessed, while ensuring the continuity of above-mentioned Internet connection.

It there is also such a case, if the position UE changes, it is possible to the AP of above-mentioned WLAN be caused not to be subordinated to it The preceding BNG for having passed through eNodeB and having been accessed, then UE can also authenticate success at this time, but this BNG is marked in the UE of its current record It is not found in knowledge and sends above-mentioned UE mark, BNG can distribute the IP address of a new Internet to UE.UE receives this It is exemplary after new IP address, it can be handled as follows:

For ensure UE current accessed Internet connection continuity, can not be done in this case with default configuration UE Switching, continues to use the access way of eNodeB, utilizes the Internet accessed by BNG that eNodeB is accessed. At this point, UE does not respond the DHCPOffer message of this BNG.After UE enters idle state, UE can carry out BNG again Selection.

It can also be configured and whether be switched over by UE, it can be by user's display reminding information or by matching in advance It sets, or the method for whether thering is continuity to require by the business that software mode monitors active user, decides whether to switch.At this time If UE determines switching, UE is directly linked into Internet from WLAN using new IP address.And between UE and original BNG Session can be deleted after the idle regular hour by original BNG.

The embodiment of the invention also provides a kind of user equipmenies 70, as shown in Figure 8, comprising:

Determination unit 71: need to establish the carrying for accessing special services for determination, the special services be via 3GPP network and the addressable service of non-3GPP network；

Transmission unit 72: for sending the UE access non-3GPP network to for its 3GPP network insertion node serviced The request of gateway；It is completed so that the UE is established via the carrying of non-3GPP network gateway described in 3GPP network insertion；

Access unit 73: the special services are accessed by establishing the carrying completed for the UE.

As shown in figure 9, it is optional, it can also include storage unit 74: for knowing and saving the non-3GPP of its access The address information of network gateway.

The embodiment of the invention also provides a kind of 3GPP network control network elements 90, as shown in Figure 10, comprising:

Receiving unit 91: for receiving asking for the UE access non-3GPP network gateway sent by 3GPP network insertion node It asks；

Control unit 92: the UE is established via the carrying of 3GPP network insertion non-3GPP network gateway for controlling.

Optionally, as shown in figure 11, the 3GPP network control network element can also include: the first transmission unit 93, described First transmission unit 93 is used to send UE access non-to the corresponding non-3GPP network gateway of address information described at least one The request of 3GPP network gateway.

Described control unit 92 includes: to obtain module 921, first to send control module 922, the first bearer management module 923；Wherein,

Obtain module 921: for obtaining the address information of non-3GPP network gateway；

First transmission control module 922: for controlling first transmission unit 93 via 3GPP network gateway, to The corresponding non-3GPP network gateway of at least one described address information sends the request of UE access non-3GPP network gateway；

The receiving unit 91 is also used to receive answer of the non-3GPP network gateway to the request；

First bearer management module 923: for indicating 3GPP network in the answer received by the receiving unit 91 In the case that carrying between gateway and non-3GPP network gateway is successfully established, 3GPP net described in the UE access is established The carrying of network gateway.

The acquisition module 921 is specifically used for:

Inquiry request is sent to dns server；The inquiry request include: 3GPP network insertion node location information and For being directed toward the access point name APN of non-3GPP network gateway, and receive the non-3GPP network of the dns server feedback The address information of gateway；Alternatively, being read from the request for the UE access non-3GPP network gateway that receiving unit 91 receives Take the address information of non-3GPP network gateway；Alternatively, obtaining the address information of preconfigured non-3GPP network gateway.

The first transmission control module 922 is specifically used for:

In the case where needing non-3GPP network insertion being switched to 3GPP network insertion, controls described first and send list The corresponding non-3GPP network gateway of each address information that member 93 is got to the acquisition module, sends UE access The request of non-3GPP network gateway；Otherwise, it controls described in first transmission unit 93 gets to the acquisition module A corresponding non-3GPP network gateway in address information sends the request of UE access non-3GPP network gateway.

Alternatively, optional, as shown in figure 12, the 3GPP network control network element can also include: the second transmission unit 94, For sending the request of UE access non-3GPP network gateway to 3GPP network gateway；

Described control unit 92 includes: the second transmission control module 924, the second bearer management module 925；

Described second sends control module 924: for controlling second transmission unit 94 to 3GPP network gateway Send the request of UE access non-3GPP network gateway；So that the 3GPP network gateway obtains itself and is pre-configured with The address information of non-3GPP network gateway, and sent to the corresponding non-3GPP network gateway of address information described at least one The request of UE access non-3GPP network gateway；

The receiving unit 91 is also used to receive reply of the non-3GPP network gateway to the request；

The second bearer management module 925: if for indicating 3GPP in answer received by the receiving unit 91 Carrying between network gateway and non-3GPP network gateway is successfully established, then establishes 3GPP network described in the UE access The carrying of gateway.

Described control unit 92 is also used to the holding via non-3GPP network gateway described in 3GPP network insertion in the UE It carries in unwanted situation, deletes the UE via the carrying of 3GPP network insertion non-3GPP network gateway

The embodiment of the invention also provides a kind of non-3GPP network gateways 120, as shown in figure 13, comprising:

Receiving unit 121: for receiving the UE access non-3GPP network gateway sent by 3GPP network gateway Request；

Transmission unit 122: for being forwarded from the 3GPP network gateway to 3GPP network control network element to the request Reply；So that the 3GPP network control network element indicates 3GPP network gateway and non-3GPP network in the answer In the case that carrying between gateway is successfully established, the carrying of 3GPP network gateway described in the UE access is established in control.

Optionally, as shown in figure 13, the non-3GPP network gateway can also include:

Storage unit 123: mark and the UE for saving the UE being currently accessed are currently accessed the mark of mode Know.

Further alternative, as shown in figure 14, the non-3GPP network gateway can also include:

First establishes load bearing unit 124: for establishing between 3GPP network gateway and non-3GPP network gateway Carrying；

Allocation unit 125: for distributing the address information for accessing the special services for the UE；

Further alternative, as shown in figure 15, the non-3GPP network gateway can also include:

First query unit 126: it is identified for inquiring in current record with the presence or absence of with UE consistent in the request；

First updating unit 127: for inquiring the case where there are consistent UE marks in first query unit 126 Under, update the mark that the UE in storage unit is currently accessed mode；

Second establishes load bearing unit 128: for establishing between 3GPP network gateway and non-3GPP network gateway Carrying；

Alternatively, further alternative, as shown in figure 16, the non-3GPP network gateway can also include: the second inquiry Unit 129, the second updating unit 130；

The receiving unit 121 is also used to receive the certification message that UE is sent by the access point of non-3GPP network, institute Stating certification message includes: the mark of the UE, switching mark；

Second query unit 129: for after the authentication has been successful, inquiring in the current record of non-3GPP network gateway It is identified with the presence or absence of with UE consistent in the certification message；

Second updating unit 130: for inquiring the case where there are consistent UE marks in second query unit 129 Under, update the mark that the UE in storage unit is currently accessed mode；

The transmission unit 121 is also used to send certification feedback message to the UE, and the certification feedback message includes it Before distribute to the UE for accessing the address informations of the special services；Wherein, the non-3GPP network gateway is not institute It states UE and redistributes address information for accessing the special services；

The transmission unit 121 is also used to send deleting bearing request to 3GPP gateway, so that UE is via 3GPP The deleting load-bearing of non-3GPP network gateway described in network insertion.

A kind of device for realizing the unloading of 3GPP network flow provided in an embodiment of the present invention, using non-3GPP network gateway As the equipment of relieving flowing volume, that is, pass through the flow of non-3GPP network shunt 3GPP network, so as to mitigate 3GPP core The burden of network, and this scheme does not influence current network framework, is conducive to operator and realizes.In addition, being used in the present invention Equipment of the non-3GPP network gateway as unloading 3GPP network flow, this is just to realize 3GPP network access mode and non- Seamless switching between 3GPP network access mode is laid a good foundation, to guarantee that the connection of special services of user's current accessed will not It interrupts.

The embodiment of the invention also provides a kind of user equipmenies 160, as shown in figure 17, comprising:

Transmitter 161, memory 162 and the processor 163 being connected with memory.

Wherein, batch processing code is stored in the memory, and the processor is deposited in the memory for calling The program code of storage executes a kind of corresponding method realizing 3GPP network flow and unloading of any user equipment in above-described embodiment In operation other than sending, transmitter is for sending the processing result of processor.

The embodiment of the invention also provides a kind of 3GPP network control network elements 170, as shown in figure 18, comprising:

Receiver 171, memory 172 and the processor 173 being connected with memory.

Wherein, the receiver is described for receiving the information that other devices are sent to the 3GPP network control network element Batch processing code is stored in memory, and the processor is executed for calling the program code stored in the memory In addition to connecing in a kind of corresponding method for realizing the unloading of 3GPP network flow of any 3GPP network control network element in above-described embodiment Operation other than receipts.

Optionally, the 3GPP network control network element can also include transmitter 174, and for sending processor, treated As a result, the processor executes any 3GPP net in above-described embodiment for calling the program code stored in the memory Network control network element is corresponding a kind of to realize operation other than sending and receiving in method that 3GPP network flow unloads.

The embodiment of the invention also provides a kind of non-3GPP network gateways 180, as shown in figure 19, comprising:

Receiver 181, memory 182 and the processor 183 being connected with memory.

Wherein, the receiver 181 is described to deposit for receiving the information that other devices are sent to non-3GPP network gateway Batch processing code is stored in reservoir, and the processor 183 is used to call the program code stored in the memory 182, A kind of corresponding realizes of any non-3GPP network gateway in above-described embodiment is executed to remove in method that 3GPP network flow unloads Operation other than receiving.

Optionally, the non-3GPP network gateway is also possible that transmitter 184, for sending the place of the processor Manage result；Batch processing code is stored in the memory, and the processor 183 is deposited in the memory 182 for calling The program code of storage executes a kind of corresponding realization 3GPP network flow of any non-3GPP network gateway in above-described embodiment and unloads Operation in the method for load other than sending and receiving.

In several embodiments provided herein, it should be understood that disclosed system, device and method can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that the independent physics of each unit includes, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.

The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer Equipment (can be personal computer, server or the network equipment etc.) executes the portion of each embodiment the method for the present invention Step by step.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic or disk etc. are various can store The medium of program code.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features； And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims

1. a kind of method for realizing the unloading of 3GPP network flow characterized by comprising

User equipment (UE) determination need to establish the carrying for accessing special services, the special services be via 3GPP network and The addressable service of non-3GPP network；

The UE sends asking for the UE access non-3GPP network gateway to the 3GPP network insertion node serviced for the UE It asks；It is completed so that the UE is established via the carrying of non-3GPP network gateway described in 3GPP network insertion, wherein the UE Carrying via non-3GPP network gateway described in 3GPP network insertion includes 3GPP network gateway and the non-3GPP The carrying of 3GPP network gateway described in carrying and the UE access between network gateway；

The UE accesses the special services by establishing the carrying completed.

2. the method according to claim 1, wherein

The request of the UE access non-3GPP network gateway includes: that UE is identified and for being directed toward connecing for non-3GPP network gateway Access point title APN；

Alternatively, the request of the UE access non-3GPP network gateway includes: UE mark, for being directed toward non-3GPP network gateway APN and switching mark.

3. method according to claim 1 or 2, which is characterized in that further include:

The address information of the non-3GPP network gateway of its access is known and saved to the UE.

4. a kind of method for realizing the unloading of 3GPP network flow characterized by comprising

3GPP network control network element receives the user equipment UE access non-3GPP mesh network sent by 3GPP network insertion node The request of pass；

Control establishes the UE via the carrying of 3GPP network insertion non-3GPP network gateway, wherein the UE is via 3GPP The carrying of non-3GPP network gateway described in network insertion includes 3GPP network gateway and the non-3GPP network gateway Between carrying and the UE access described in 3GPP network gateway carrying.

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

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

The request of the UE access non-3GPP network gateway further include: the location information of 3GPP network insertion node；

Alternatively, the request of the UE access non-3GPP network gateway further include: the address information of non-3GPP network gateway.

7. according to the described in any item methods of claim 4-6, which is characterized in that the control establishes the UE via 3GPP net Network access non-3GPP network gateway carrying include:

Obtain the address information of non-3GPP network gateway；

Via 3GPP network gateway, UE is sent to the corresponding non-3GPP network gateway of address information described at least one and is connect Enter the request of non-3GPP network gateway；

Receive answer of the non-3GPP network gateway to the request；

8. the method according to the description of claim 7 is characterized in that the address information packet for obtaining non-3GPP network gateway It includes:

Inquiry request is sent to dns server；The inquiry request includes: the location information of 3GPP network insertion node and is used for It is directed toward the access point name APN of non-3GPP network gateway, and receives the non-3GPP network gateway of the dns server feedback Address information；Alternatively,

From the request of the UE access non-3GPP network gateway received, the address letter of non-3GPP network gateway is read Breath；Alternatively,

Obtain the address information of preconfigured non-3GPP network gateway.

9. according to the method described in claim 8, it is characterized in that, described to the corresponding non-of address information described at least one 3GPP network gateway send UE access non-3GPP network gateway request include:

In the case where needing non-3GPP network insertion being switched to 3GPP network insertion, to each address got The corresponding non-3GPP network gateway of information sends the request of UE access non-3GPP network gateway；Otherwise, to the institute got State the request that a corresponding non-3GPP network gateway in address information sends UE access non-3GPP network gateway.

10. according to the described in any item methods of claim 4-6, which is characterized in that the control establishes the UE via 3GPP The carrying of network insertion non-3GPP network gateway includes:

The request of UE access non-3GPP network gateway is sent to 3GPP network gateway；So that the 3GPP network service Gateway obtains the address information for itself being pre-configured with non-3GPP network gateway, and corresponding to address information described at least one The request of non-3GPP network gateway transmission UE access non-3GPP network gateway；

Receive answer of the non-3GPP network gateway to the request；

11. according to the method described in claim 4, it is characterized in that, in the UE via non-described in 3GPP network insertion In the unwanted situation of the carrying of 3GPP network gateway, the method also includes:

12. a kind of method for realizing the unloading of 3GPP network flow characterized by comprising

Non-3GPP network gateway receives the request of the UE access non-3GPP network gateway sent by 3GPP network gateway；

The answer to the request is forwarded from the 3GPP network gateway to 3GPP network control network element；So that the 3GPP Network control network element indicates that the carrying between 3GPP network gateway and non-3GPP network gateway is created as in described reply In the case where function, the carrying of 3GPP network gateway described in the UE access is established in control.

13. according to the method for claim 12, which is characterized in that

The request of the UE access non-3GPP network gateway includes: that UE is identified and for being directed toward non-3GPP network gateway APN；

14. according to the method for claim 13, which is characterized in that if the request of the UE access non-3GPP network gateway In do not include switching mark, then the method also includes:

The address information for accessing special services is distributed for the UE；

Carrying between the answer instruction 3GPP network gateway and non-3GPP network gateway of the described pair of request is created as Function, and include: for UE distribution for accessing the address information of the special services.

15. according to the method for claim 12, which is characterized in that further include:

It saves the mark for being currently accessed the UE of the non-3GPP network gateway and the UE is currently accessed the mark of mode Know.

16. according to the method for claim 15, which is characterized in that if the request of the UE access non-3GPP network gateway In comprising switching mark, then the method also includes:

If it exists, then the mark that UE is currently accessed mode is updated, and establishes 3GPP network gateway and non-3GPP network Carrying between gateway, and the address information for accessing special services is not redistributed for the UE；Described pair of request It replies instruction carrying to be successfully established, and the address information for being used to access the special services including distributing to the UE before.

17. according to the method for claim 15, which is characterized in that the method also includes:

The certification message that UE is sent by the access point of non-3GPP network is received, the certification message includes: the mark of the UE Know and switching identifies；

After the authentication has been successful, inquire non-3GPP network gateway current record in the presence or absence of in the certification message unanimously UE mark；

If it exists, then the mark that UE is currently accessed mode is updated, and is not redistributed for the UE for accessing special services Address information；

Certification feedback message is sent to the UE, the certification feedback message distributes to the described for accessing of the UE before including The address information of special services；

Deleting bearing request is sent to 3GPP gateway, so that UE is via non-3GPP mesh network described in 3GPP network insertion The deleting load-bearing of pass.

18. a kind of user equipment (UE) characterized by comprising

Determination unit: the carrying for accessing special services need to be established for determination, the special services are via 3GPP network With the addressable service of non-3GPP network；

Transmission unit: for sending the UE access non-3GPP mesh network to the 3GPP network insertion node serviced for the UE The request of pass；It is completed so that the UE is established via the carrying of non-3GPP network gateway described in 3GPP network insertion, wherein The UE via the carrying of non-3GPP network gateway described in 3GPP network insertion includes 3GPP network gateway and described The carrying of 3GPP network gateway described in carrying and the UE access between non-3GPP network gateway；

19. UE according to claim 18, which is characterized in that

Or the request of the UE access non-3GPP network gateway includes: UE mark, for being directed toward non-3GPP network gateway APN and switching mark.

20. UE described in 8 or 19 according to claim 1, which is characterized in that further include:

21. a kind of 3GPP network control network element characterized by comprising

Receiving unit: for receiving the request of the UE access non-3GPP network gateway sent by 3GPP network insertion node；

Control unit: the UE is established via the carrying of 3GPP network insertion non-3GPP network gateway for controlling, wherein institute It includes 3GPP network gateway and the non-that UE, which is stated, via the carrying of non-3GPP network gateway described in 3GPP network insertion The carrying of 3GPP network gateway described in carrying and the UE access between 3GPP network gateway.

22. 3GPP network control network element according to claim 21, which is characterized in that

23. 3GPP network control network element according to claim 22, which is characterized in that

24. according to the described in any item 3GPP network control network elements of claim 21-23, which is characterized in that the 3GPP network Control network element further include: the first transmission unit, first transmission unit are used for non-3GPP mesh network described at least one The corresponding non-3GPP network gateway of the address information of pass sends the request of UE access non-3GPP network gateway；

First sends control module: for controlling first transmission unit via 3GPP network gateway, at least one The corresponding non-3GPP network gateway of the address information sends the request of UE access non-3GPP network gateway；

25. 3GPP network control network element according to claim 24, which is characterized in that the acquisition module is specifically used for:

From the request for the UE access non-3GPP network gateway that receiving unit receives, non-3GPP network gateway is read Address information；Alternatively,

Obtain the address information of preconfigured non-3GPP network gateway.

26. 3GPP network control network element according to claim 25, which is characterized in that described first sends control module tool Body is used for:

In the case where needing non-3GPP network insertion being switched to 3GPP network insertion, control first transmission unit to The corresponding non-3GPP network gateway of each address information for obtaining module and getting, sends UE access non-3GPP The request of network gateway；Otherwise, it controls in the address information that first transmission unit is got to the acquisition module A corresponding non-3GPP network gateway send the request of UE access non-3GPP network gateway.

27. according to the described in any item 3GPP network control network elements of claim 21-23, which is characterized in that the 3GPP network Control network element further include: the second transmission unit, for sending UE access non-3GPP network gateway to 3GPP network gateway Request；

The second transmission control module: UE access is sent to 3GPP network gateway for controlling second transmission unit The request of non-3GPP network gateway；So that the 3GPP network gateway obtains and itself is pre-configured with non-3GPP network The address information of gateway, and UE access non-is sent to the corresponding non-3GPP network gateway of address information described at least one The request of 3GPP network gateway；

The receiving unit: it is also used to receive answer of the non-3GPP network gateway to the request；

The second bearer management module: if for indicating 3GPP network clothes in the answer received by the receiving unit Carrying between business gateway and non-3GPP network gateway is successfully established, then establishes 3GPP network service network described in the UE access The carrying of pass.

28. 3GPP network control network element according to claim 21, which is characterized in that described control unit is also used in institute State UE via in the unwanted situation of carrying of non-3GPP network gateway described in 3GPP network insertion, delete the UE via The carrying of 3GPP network insertion non-3GPP network gateway.

29. a kind of non-3GPP network gateway characterized by comprising

Receiving unit: for receiving the request of the UE access non-3GPP network gateway sent by 3GPP network gateway；

Transmission unit: for forwarding the answer to the request from the 3GPP network gateway to 3GPP network control network element； So that the 3GPP network control network element the answer indicate 3GPP network gateway and non-3GPP network gateway it Between carrying be successfully established in the case where, the carrying of 3GPP network gateway described in the UE access is established in control.

30. non-3GPP network gateway according to claim 29, which is characterized in that

The request of the UE access non-3GPP network gateway includes: that UE is identified and for being directed toward non-3GPP network gateway APN,

31. non-3GPP network gateway according to claim 30, which is characterized in that further include:

First establishes load bearing unit: the carrying for establishing between 3GPP network gateway and non-3GPP network gateway；

Allocation unit: for distributing the address information for accessing special services for the UE；

32. non-3GPP network gateway according to claim 29, which is characterized in that further include:

33. non-3GPP network gateway according to claim 32, which is characterized in that further include:

First updating unit: it for inquiring in first query unit there are in the case where consistent UE mark, updates and protects UE in memory cell is currently accessed the mark of mode；

Second establishes load bearing unit: the carrying for establishing between 3GPP network gateway and non-3GPP network gateway；

The answer instruction carrying of described pair of request is successfully established, and including distribute to before the UE for accessing special services Address information；Wherein, the non-3GPP network gateway is not that the UE is redistributed for accessing the special services Address information.

34. non-3GPP network gateway according to claim 32, which is characterized in that further include: the second query unit and Second updating unit；

The receiving unit is also used to: receiving the certification message that UE is sent by the access point of non-3GPP network, the certification Message includes: the mark of the UE, switching mark；

Second query unit: for after the authentication has been successful, inquiring in the current record of non-3GPP network gateway and whether depositing It is identified with UE consistent in the certification message；

Second updating unit: it for inquiring in second query unit there are in the case where consistent UE mark, updates and protects UE in memory cell is currently accessed the mark of mode；

The transmission unit is also used to: sending certification feedback message to the UE, the certification feedback message distributes before including To the UE for accessing the address information of special services；Wherein, the non-3GPP network gateway is not that the UE divides again It is used in the address information for accessing the special services；

The transmission unit is also used to: deleting bearing request is sent to 3GPP gateway, so that UE connects via 3GPP network Enter the deleting load-bearing of the non-3GPP network gateway.