CN102448046B

CN102448046B - Method, equipment and system for optimizing data route

Info

Publication number: CN102448046B
Application number: CN201010503824.2A
Authority: CN
Inventors: 孙滔; 邓辉
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2015-07-01
Anticipated expiration: 2030-09-30
Also published as: CN102448046A

Abstract

The invention discloses a method, equipment and system for optimizing data route, for solve the problem that: when UE (User Equipment) accesses a PDN (Public Data Network) through a mobile communication network remotely, data route alternation exists after the UE moves in the accessed PDN network. The method for optimizing the data route comprises the following steps of: receiving request information which is initiated after the UE moves; after receiving the request information, confirming that the PDN connection between the UE and the accessed PDN network needs route optimization; when confirming that an APN (Access Point Name) of the PDN connection allows to establish LIPA (Local IP Access) connection according to subscription information of the UE, controlling the type of the PDN connection to be optimized to be LIPA connection.

Description

A kind of data route optimizing method, equipment and system

Technical field

The present invention relates to moving communicating field, particularly relate to a kind of data route optimizing method, equipment and system.

Background technology

In prior art, UE (User Equipment, subscriber equipment) be positioned at accessed PDN (Public DataNetwork, public data network) network-external application scenarios under, the general mode being adopted long-range access by the core net in mobile radio communication, the IP device of access PDN network internal or application service.

But when UE is from after PDN network-external moves to PDN network internal, base station equipment via PDN network internal is linked into the core net in mobile radio communication by data route, be linked into IP device or the application service of PDN network internal again via the core net in mobile radio communication, thus realize the access to PDN Internet resources.

Visible, in prior art during access long-range by mobile radio communication, UE also exists data route detour problem after moving to accessed PDN network internal.

Summary of the invention

The invention discloses a kind of data route optimizing method, equipment and system, during in order to solve by mobile radio communication long-range access PDN network, the route detour problem that UE exists after moving to accessed PDN network internal.

The embodiment of the present invention provides a kind of data route optimizing method, comprising:

Be received in after user equipment (UE) is moved, the request message of initiation;

After receiving described request message, the PDN confirming between described UE with accessed common data network PDN network be connected need to carry out routing optimality and according to the CAMEL-Subscription-Information of UE confirm APN APN that described PDN connects allow to set up local internet protocol access LIPA connect time, control the type that described PDN connects to be optimized for LIPA and connect.

The embodiment of the present invention provides a kind of data route optimizing equipment, comprising:

Receiving element, for being received in after user equipment (UE) is moved, the request message of initiation;

Optimize unit, for after receiving described request message, the PDN confirming between described UE with accessed common data network PDN network be connected need to carry out routing optimality and according to the CAMEL-Subscription-Information of UE confirm APN APN that described PDN connects allow to set up local internet protocol access LIPA connect time, control the type that described PDN connects to be optimized for LIPA and connect.

The embodiment of the present invention provides a kind of data route optimizing system, comprising:

Trigger equipment, after being moved at user equipment (UE), initial request messages;

Data route optimizing equipment, for receiving the request message that described trigger equipment is initiated; The PDN confirming between described UE with accessed common data network PDN network be connected need to carry out routing optimality and according to the CAMEL-Subscription-Information of UE confirm APN APN that described PDN connects allow to set up local internet protocol access LIPA connect time, control the type that described PDN connects to be optimized for LIPA and connect.

The data route optimizing method that the embodiment of the present invention provides, equipment and system, when UE is by mobile radio communication long-range access PDN network, if UE moves to accessed PDN network internal, UE or source base station equipment are by initial request messages, if the PDN judging between this UE with accessed PDN network is connected need to carry out routing optimality, and the APN that this PDN connects allows to set up LIPA to be connected, and the type that this PDN connects is optimized for LIPA and connects.Because LIPA is the access way not directly being linked into PDN network by the core net in mobile communications network, thus optimize data route, efficiently solve UE when moving to accessed PDN network internal from accessed PDN network-external, the data route detour problem of existence.

Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.

Accompanying drawing explanation

Fig. 1 is under RIAP scene, data route schematic diagram figure before the accessed PDN network of the long-range access of UE is moved and after being moved;

Fig. 2 is in the embodiment of the present invention, data route optimizing method implementing procedure figure;

Fig. 3 is in the embodiment of the present invention, a kind of possible structural representation of data route optimizing equipment;

Fig. 4 is in the embodiment of the present invention, after UE is moved in an idle state, and the implementing procedure figure of data route optimizing during initiating business request;

Fig. 5 is in the embodiment of the present invention, after UE is moved in connected state, initiates the implementing procedure figure of data route optimizing during handover request.

Embodiment

During in order to solve UE by mobile radio communication long-range access PDN network, the data route detour problem that UE exists after moving to accessed PDN network internal, embodiments provide a kind of data route optimizing method and equipment, after being moved by detection UE, the PDN network of target P DN network when request message is initiated whether for being accessed by the core net in mobile radio communication, judge whether UE is moved to accessed PDN network internal, thus avoid after UE moves to PDN network internal, PDN network is linked into by core net is roundabout, realize data route optimizing.

Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein is only for instruction and explanation of the present invention, be not intended to limit the present invention, and when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.

First the typical apply scene of the embodiment of the present invention is introduced.Wherein, mobile radio communication is described for enterprise or family lan with LTE (LongTerm Evolution, long evolving system) network, PDN network.

As shown in Figure 1, the core net of LTE network comprises MME (Mobile Management Entity, Mobility Management Entity), SGW (Serving Gateway, gateway) and PGW (PDN Gateway, public data network gateway).Enterprise or family lan comprise multiple HeNB (Home evolved Node B), and enterprise or family lan deploy to merge with HeNB and arrange or independent L-GW (the Local PDN Gateway arranged, local gateway), enable UE directly access the Internet resources of enterprise or family lan by HeNB.

UE is when enterprise or family lan outside, and data route is generally directly linked into L-GW by the SGW in core net, and accessed the Internet resources of enterprise or family lan by L-GW, data route refers to shown in dotted line.But when UE moves to enterprise or family lan inside from enterprise or home LAN outside, HeNB by enterprise or family lan inside is linked into the SGW in core net by data route, accessed the Internet resources of enterprise or family lan again by L-GW, data route refers to shown in solid line.There is data route detour problem as seen.In the embodiment of the present invention, by the access way of the local gateway access PDN Internet resources of accessed PDN network internal administration, be called RIPA (Remote IPAccess, remote I P accesses), such as, pass through IP device or the application service of L-GW remote access enterprise or family lan inside in Fig. 1.

In order to optimization data route alleviates the burden of core net simultaneously, embodiments provide corresponding data route optimizing method, as shown in Figure 2, comprise the steps:

S201, data route optimizing equipment are received in after UE is moved, the request message of initiation;

After S202, data route optimizing equipment receive request message, the PDN confirming between this UE with accessed PDN network is connected and needs to carry out routing optimality and confirm according to the CAMEL-Subscription-Information of UE APN (the Access Point Name that this PDN connects, APN) allow to set up LIPA (Local IPAccess, local IP access; IP:Intemet Protocol, Internet protocol) when connecting, the type controlling to be connected by this PDN is optimized for LIPA and connects;

It should be noted that, LIPA refers to the access way not directly being linked into PDN network by the core net in mobile radio communication; Specify according to existing protocol, HSS (Home Subscriber Server, home subscriber server) the middle CAMEL-Subscription-Information storing UE, comprise the LIPA License Info etc. of CSG ID, APN and correspondence, its CAMEL-Subscription-Information is sent to the MME/SGSN in core net by HSS when UE access mobile communication net.

In concrete enforcement, the type identification for identifying the type that PDN connects in data route optimizing equipment, can also be stored; After the type of PDN connection is optimized for LIPA connection, this data route optimizing equipment is revised as LIPA mark by connecting the type identification stored for this PDN, and it is that LIPA connects that this LIPA identifies the type being used to indicate this PDN connection.

Embodiment of the present invention data route optimizing goes for various mobile radio communication, such as LTE network, UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) network etc.In the lte networks, described data route optimizing equipment specifically refers to MME; In a umts network, described data route optimizing equipment specifically refers to SGSN (Service GPRS Support Node, Serving GPRS Support Node; GPRS: GPRS).Those of ordinary skill in the art are known, and the SGSN in UMTS network possesses the function of MME and SGW in LTE network simultaneously.The type that the data route optimizing method that the embodiment of the present invention provides is not only applicable to PDN connection is the application scenarios that above-mentioned RIPA connects, the type being equally applicable to PDN connection is the application scenarios that other long-range access connects, such as, by traditional access way of the gateway device remote access PDN Internet resources in core net.

In concrete enforcement, described request message can be signaling message concrete as follows:

1) after UE is in connected state moved, the Handover Required (handover request) that the source base station equipment of UE access is initiated;

In a umts network, described source base station equipment be specifically as follows NodeB (Node B and macro base station), also can for HNB (home node-b and Home eNodeB); In the lte networks, described source base station equipment be specifically as follows eNodeB (evolved node B and macro base station), also can for HeNB.

2) after UE is in an idle state moved, the Service Request (service request) that UE initiates.

3) in LTE network, after UE is in an idle state moved, the Tracking AreaUpdate procedure (tracing section updating flow process) that UE initiates; In UMTS network, after UE is in an idle state moved, the Routing Area Update procedure (Routing Area Update flow process) that UE initiates.

In concrete enforcement, after data route optimizing equipment receives request message, the PDN that can confirm between this UE with accessed PDN network is in the following way connected and needs to carry out routing optimality, is introduced respectively:

Mode one, to judge according to the address information of local gateway

The type which is applicable to PDN connection is the application scenarios that RIPA connects, if local gateway and base station equipment merge and arrange in PDN network, during initial request messages, target BS equipment can carry the address information (being generally IP address) of corresponding local gateway to data route optimizing equipment.Data route optimizing equipment judges that whether the gateway address that this PDN that the address information of local gateway and self store connects is consistent; If consistent, then confirming that UE is connected with the PDN between accessed PDN network needs to carry out routing optimality.In the lte networks, described local gateway can be called L-GW; In a umts network, described local gateway can be called L-GGSN (Local Gateway GPRS Support Node, Gateway GPRS Support Node).

Mode two, triggering local gateway selection course judge

The type which is applicable to PDN connection is the application scenarios that RIPA connects, data route optimizing equipment can utilize local gateway to select mechanism to select the local gateway of a current region according to request message, judges that whether the gateway address that the address information of the local gateway selected and this PDN that self stores connect is consistent; If consistent, then the PDN confirming between described UE with accessed PDN network is connected and needs to carry out routing optimality.

Mode three, to be judged by positional information

The type which is applicable to PDN connection is the application scenarios that RIPA connects and other long-range access connects, if the target BS equipment of the current access of UE is Home eNodeB, the CSG ID (Closed Subscriber Group Identifier, closed subscriber group identity) of present access subzone is carried in described request message; Data route optimizing equipment judges that described PDN connects the CSG ID whether comprising the present access subzone of carrying in described request message in each CSG ID of corresponding accessed PDN network; If comprised, then the PDN confirming between described UE with accessed PDN network is connected and needs to carry out routing optimality.

For above-mentioned three kinds of modes, after the PDN confirming between described UE with accessed PDN network is connected and needs to carry out routing optimality, CAMEL-Subscription-Information due to UE comprises LIPA License Info, the LIPA connection type that the APN that described LIPA License Info mark PDN connects allows; Further, the LIPA connection type of the APN permission that described PDN connects can be obtained from the CAMEL-Subscription-Information of UE; Confirm that the APN that described PDN connects allows to set up LIPA connection based on the LIPA connection type got.

In concrete enforcement, after data route optimizing equipment receives request message, the PDN that can simultaneously confirm between this UE with accessed PDN network is in the following way connected and needs to carry out routing optimality and the APN that this PDN connects allows to set up LIPA connects, the type which is applicable to PDN connection is the application scenarios that RIPA connects and other long-range access connects, and is introduced below:

According to the CAMEL-Subscription-Information of UE, judge the CSG ID of present access subzone corresponding allow set up LIPA connect APN list in whether comprise described PDN connect APN; If so, then confirm that UE is connected with the PDN between accessed PDN network to need to carry out routing optimality and the APN that this PDN connects allows to set up LIPA connects.

In concrete enforcement, described data route optimizing equipment controls the type that PDN connects to be optimized for LIPA connection by issuing routing optimality mark to the target BS equipment of the current access of UE.The target BS equipment of the current access of UE and local gateway merge arrange time, data route optimizing equipment comprises the tunnel identifier in the S5 tunnel between local gateway and data route optimizing equipment that PDN connects to the routing optimality mark that the target BS equipment of the current access of UE issues; When the local gateway that target BS and the described target BS of the current access of UE access independently is arranged, the routing optimality mark that data route optimizing equipment issues to the target BS equipment of the current access of UE comprises: the tunnel identifier of associated tunnel (as S5 tunnel) between the local gateway that PDN connects and data route optimizing equipment and the address information of local gateway.

Based on same inventive concept, a kind of data route optimizing equipment and system is additionally provided in the embodiment of the present invention, the principle of dealing with problems due to this equipment and system is similar to data route optimizing method, and therefore the enforcement of this equipment and system see the enforcement of method, can repeat part and repeat no more.In the lte networks, described data route optimizing equipment specifically refers to MME; In a umts network, described data route optimizing equipment specifically refers to SGSN.

As shown in Figure 3, be a kind of possible structural representation of data route optimizing equipment that the embodiment of the present invention provides, comprise:

Receiving element 301, for being received in after UE is moved, the request message of initiation;

Optimize unit 302, for after receiving request message, confirm UE is connected with the PDN between accessed PDN network need to carry out routing optimality and according to the CAMEL-Subscription-Information of UE confirms APN that PDN connects allow to set up LIPA connect time, control the type of PDN connection to be optimized for LIPA connection.

Concrete, optimizing unit 302 can comprise:

First judgment sub-unit 3021, for judging that this PDN connects the need of carrying out routing optimality, and exports judged result;

Second judgment sub-unit 3022, for when the judged result of the first judgment sub-unit 3021 output is for being, judges whether the APN that this PDN connects allows to set up LIPA connection, and exporting judged result;

Perform subelement 3023, for when the judged result of the second judgment sub-unit 3022 output is for being, the type controlling to be connected by this PDN is optimized for LIPA and connects.

Concrete, first judgment sub-unit 3021, if the type connected specifically for described PDN is connected, according to the address information of the local gateway that the target BS equipment of the current access of UE sends by the RIPA of the local gateway access PDN Internet resources of accessed PDN network internal administration; Judge that whether the gateway address that the described PDN that the address information of this local gateway and self store connects is consistent; If consistent, then it is yes for exporting judged result;

Or,

First judgment sub-unit 3021, if be connected by the RIPA of the local gateway access PDN Internet resources of accessed PDN network internal administration specifically for the type of described PDN connection, selects the local gateway of a current region; Judge that whether the gateway address that the address information of the local gateway selected and this PDN that self stores connect is consistent; If consistent, then it is yes for exporting judged result;

Or,

First judgment sub-unit 3021, specifically for judging that PDN connects the CSG ID whether comprising the present access subzone of carrying in described request message in each CSG ID of corresponding accessed PDN network, if the target BS of the current access of UE is Home eNodeB, in this request message, carry the CSGID of present access subzone; If comprised, then it is yes for exporting judged result.

Concrete, perform subelement 3023, specifically for when the judged result of described second judgment sub-unit 3022 output is for being, control the type that described PDN connects to be optimized for LIPA connection by issuing routing optimality mark to the target BS equipment of the current access of UE.

In concrete enforcement, data route optimizing equipment can also comprise:

Memory cell 303, for storing the type identification for identifying the type that PDN connects; And

Updating block 304, the type connected for this PDN is optimized for after LIPA connects, and is revised as LIPA mark by connecting the type identification stored for this PDN, and it is LIPA connection that this LIPA mark is used to indicate the type that this PDN connects.

The embodiment of the present invention provides a kind of data route optimizing system simultaneously, comprises trigger equipment and data route optimizing equipment, and trigger equipment can be UE self, also can be the source base station equipment of UE access; Data route optimizing equipment can be the MME in LTE network, also can be the SGSN in UMTS network.Wherein:

Execution mode for a better understanding of the present invention, is described the specific embodiment of the present invention below by embodiment.

In the embodiment of the present invention, PDN network comprises enterprise or family lan, involved data route optimizing equipment comprises the SGSN etc. in MME, UMTS network in LTE network, and the target BS equipment in PDN network can be Home eNodeB, also can be macro base station.When the embodiment of the present invention is applicable to UE by mobile radio communication long-range access PDN network, move to the application scenarios of accessed PDN network internal from accessed PDN network-external, long-range access way includes but not limited to RIPA.In the PDN network related in the embodiment of the present invention, base station equipment and local gateway can merge setting, also can independently arrange.

For convenience of description, below for the RIPA application scenarios in LTE network, be described the routing optimization method that the embodiment of the present invention provides, the data route optimizing equipment related to is specially MME; Suppose that PDN network is enterprise or family lan, then corresponding base station equipment is HeNB, and local gateway is L-GW.

Wherein, what embodiment one described is after UE is moved in an idle state, the implementation process of data route optimizing method during UE initiating business request, what embodiment two described is after UE is moved in connected state, the implementation process of routing optimization method during source base station equipment initiation handover request.

Embodiment one

After UE is moved in an idle state, such as move to accessed enterprise or family lan inside from accessed enterprise or family lan outside, UE initiates Service Request (service request) to MME, MME is according to this Service Request trigger data routing optimality, as shown in Figure 4, comprise the steps:

S401, UE initiate Service Request by target HeNB (Home eNodeB) to MME, carry the CSG ID of present access subzone in this Service Request;

S402, MME judge that UE is connected the need of carrying out routing optimality with the PDN between accessed enterprise or family lan, if so, then perform S403; If not, continue to perform according to the follow-up flow process of existing UE initiating business request;

S403, carry out authentication according to the CAMEL-Subscription-Information of UE, judge whether APN that current PDN connects allows to set up LIPA and connect, and if so, performs S404, otherwise, continue to perform according to the follow-up flow process of existing UE initiating business request;

The type identification that PDN connects is revised as LIPA mark by S404, MME, and the type that described LIPA mark is used to indicate described PDN connection is that LIPA connects;

In concrete enforcement, MME is that each PDN connects the type identification stored, indicate the type that corresponding PDN connects, comprise LIPA, SIPTO (Selected IP Traffic Offload, selectivity flow unloads), RIPA and CN (operators ' Core Network, to Operator Core Network flow).

Carry routing optimality in S405, MME S1-MME related signaling between target HeNB to identify and can be specifically as follows to target HeNB, S1-MME related signaling: Initial Context SetupRequest;

Routing optimality mark comprises: the tunnel identifier in S5 tunnel and the address information of L-GW between L-GW and SGW, and wherein the address information of L-GW is option, and when L-GW and target HeNB merges setting, the address information of L-GW then can be omitted.

S406, set up direct tunnel between target HeNB and L-GW, thus complete routing optimality;

Concrete, according to the routing optimality mark that MME issues, target HeNB knows that PDN connects needs to carry out routing optimality, then set up the direct tunnel DTunnel between L-GW according to the address information of the L-GW in routing optimality mark.

It should be noted that, step S406 performs when target HeNB and L-GW is independently arranged, and arranges as HeNB and L-GW merges, then this step is without the need to performing.

Concrete, the method for building up of DTunnel can comprise the steps:

HeNB is according to the address information of the L-GW obtained, send Modify BearerRequest to L-GW, wherein carry following information: the address information of target HeNB, target HeNB are the tunnel identifier (descending D-TEID) transmitted for downlink data of DTunnel tunnel distributing and the tunnel identifier (L-GW S5TEID) in the S5 tunnel corresponding with this direct tunnel.

L-GW returns Modify BearerResponse to target HeNB after receiving Modify Bearer Request, wherein carries following information: the tunnel identifier (up D-TEID) transmitted for upstream data distributed for DTunnel;

So far, the DTunnel between target HeNB and L-GW can be set up according to above-mentioned information.

After routing optimality completes, complete the follow-up flow process of Service Request according to prior art.

UE be moved in an idle state laggard line position upgrade time data route optimizing execution mode, after being moved in an idle state with UE, during initiating business request, the execution mode of data route optimizing is similar, repeats no longer one by one.Wherein, UE in an idle state, the position updating request initiated after being moved, be called TAU (Tracking Area Update procedure in the lte networks, tracing section updating flow process), be called RAU (Routing Area Update procedure, Routing Area Update flow process) in a umts network.

Embodiment two

After UE is moved in connected state, such as move to accessed enterprise or family lan inside from accessed enterprise or family lan outside, the source base station equipment such as HeNB of UE access initiates Handover Required (handover request) to MME, MME is according to this Handover Required trigger data routing optimality, as shown in Figure 5, comprise the steps:

The source HeNB of S501, UE access initiates Handover Required to MME, carries the CSG ID of present access subzone in this HandoverRequired;

S502, MME judge that UE is connected the need of carrying out routing optimality with the PDN between accessed enterprise or family lan, if so, then perform S503; If not, continue to perform according to the follow-up flow process of existing UE initiating business request;

S503, carry out authentication according to the CAMEL-Subscription-Information of UE, judge whether APN that current PDN connects allows to set up LIPA and connect, and if so, performs S504, otherwise, continue to perform according to the follow-up flow process of existing UE initiating business request;

The type identification that PDN connects is revised as LIPA mark by S504, MME, and the type that described LIPA mark is used to indicate described PDN connection is that LIPA connects;

In concrete enforcement, MME is that each PDN connects the type identification stored, indicate the type that corresponding PDN connects, comprise LIPA, SIPTO (Selected IP Traffic Offload, selectivity flow unloads), PIPA and CN (operators ' Core Network, to Operator Core Network flow).

Carry routing optimality in S505, MME S1-MME related signaling between target HeNB to identify and can be specifically as follows to HeNB, S1-MME related signaling: Handover Request;

Routing optimality mark comprises: the tunnel identifier in S5 tunnel and the address information of L-GW between L-GW and SGW, and wherein the address information of L-GW is option, and when L-GW and HeNB merges setting, the address information of L-GW then can be omitted.

S506, set up direct tunnel between target HeNB and L-GW, thus complete routing optimality;

It should be noted that, step S506 performs when target HeNB and L-GW is independently arranged, and arranges as target HeNB and L-GW merges, then this step is without the need to performing.

Concrete, the method for building up of DTunnel can comprise the steps:

Target HeNB is according to the address information of the L-GW obtained, send Create SessionRequest to L-GW, wherein carry following information: the address information of target HeNB, target HeNB are the tunnel identifier (descending D-TEID) transmitted for downlink data of DTunnel tunnel distributing and the tunnel identifier (L-GW S5TEID) in the S5 tunnel corresponding with this direct tunnel.

L-GW returns Create SessionResponse to target HeNB after receiving Create Session Request, wherein carries following information: the tunnel identifier (up D-TEID) transmitted for upstream data distributed for DTunnel;

Embodiment one and embodiment two respectively describe UE be moved in an idle state after initiating business request time and connection status under be moved after when initiating handover request, the specific implementation process of data route optimizing.After completing data route optimizing, when UE accesses the Internet resources of enterprise or family lan, carry out the optimizing local routing of LIPA, data are directly shunted at local gateway, do not need the SGW through core net, up-downgoing data are transmitted according to the local routing after optimization.

The data route optimizing method that the embodiment of the present invention provides and equipment, when UE is by mobile radio communication long-range access PDN network, if UE moves to accessed PDN network internal, data route optimizing equipment will receive request message, if the PDN judging between this UE with accessed PDN network is connected need to carry out routing optimality, and the APN that this PDN connects allows to set up LIPA to be connected, and the type that this PDN connects is optimized for LIPA and connects.Because LIPA is the access way being directly linked into PDN network by the core net in mobile communications network, thus optimize data route, efficiently solve UE when moving to accessed PDN network internal from accessed PDN network-external, the data route detour problem of existence.

Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims

1. a data route optimizing method, is characterized in that, comprising:

After receiving described request message, the PDN confirming between described UE with accessed common data network PDN network be connected need to carry out routing optimality and according to the CAMEL-Subscription-Information of UE confirm APN APN that described PDN connects allow to set up local internet protocol access LIPA connect time, control the type that described PDN connects to be optimized for LIPA to connect, wherein, the PDN confirming between described UE with accessed PDN network according to any one in following three kinds of modes is connected and needs to carry out routing optimality:

If the type that described PDN connects is connected by the RIPA of the local gateway access PDN Internet resources of accessed PDN network internal administration, according to the address information of the local gateway that the target BS equipment of the current access of UE sends, judge that whether the gateway address that the described PDN that the address information of described local gateway and self store connects is consistent; If consistent, then the PDN confirming between described UE with accessed PDN network is connected and needs to carry out routing optimality; Or

If the type that described PDN connects is connected by the RIPA of the local gateway access PDN Internet resources of accessed PDN network internal administration, select the local gateway of a current region; Judge that whether the gateway address that the address information of the local gateway selected and the described PDN that self stores connect is consistent; If consistent, then the PDN confirming between described UE with accessed PDN network is connected and needs to carry out routing optimality; Or

If when the target BS equipment of the current access of UE is Home eNodeB, carry the closed subscriber group identity CSG ID of present access subzone in described request message, and judge that described PDN connects the CSGID whether comprising the present access subzone of carrying in described request message in each CSG ID of corresponding accessed PDN network; If comprised, then the PDN confirming between described UE with accessed PDN network is connected and needs to carry out routing optimality.

2. the method for claim 1, is characterized in that, the CAMEL-Subscription-Information of described UE comprises LIPA License Info, the LIPA connection type that the APN that described LIPA License Info mark PDN connects allows; And

The described CAMEL-Subscription-Information according to UE confirms that the APN APN that described PDN connects allows to set up the step that local internet protocol accesses LIPA connection, specifically comprises:

The LIPA connection type of the APN permission that described PDN connects is obtained from the CAMEL-Subscription-Information of UE;

Confirm that the APN that described PDN connects allows to set up LIPA connection based on the LIPA connection type got.

3. the method for claim 1, is characterized in that, if the target BS equipment of the current access of UE is Home eNodeB, carries the closed subscriber group identity CSGID of present access subzone in described request message;

PDN between the described UE of described confirmation with accessed common data network PDN network is connected to need to carry out routing optimality and confirms that APN that described PDN connects allows to set up LIPA and connects according to the CAMEL-Subscription-Information of UE, specifically comprises:

According to the CAMEL-Subscription-Information of UE judge the CSG ID of present access subzone corresponding allow set up LIPA connect APN list in, whether comprise described PDN connect APN;

If so, then confirm that UE is connected with the PDN between accessed common data network PDN network to need to carry out routing optimality and the APN that PDN connects allows to set up LIPA connects.

4. the method for claim 1, is characterized in that, controls the type that PDN connects to be optimized for LIPA connection by issuing routing optimality mark to the target BS equipment of the current access of UE.

5. the method for claim 1, is characterized in that, prestores the type identification for identifying the type that PDN connects; And

Described method also comprises:

After the type that described PDN connects is optimized for LIPA connection, be revised as LIPA mark by connecting the type identification stored for described PDN, the type that described LIPA mark is used to indicate described PDN connection is that LIPA connects.

6. the method as described in as arbitrary in claim 1 to 5, it is characterized in that, described request message comprises: after UE is in connected state moved, the handover request Handover Required that the source base station equipment of UE access is initiated; Or, after UE is in an idle state moved, the service request Service Request that UE initiates; Or, after UE is in an idle state moved, the tracing section updating flow process Tracking Area Update procedure that UE initiates or Routing Area Update flow process Routing AreaUpdate procedure.

7. a data route optimizing equipment, is characterized in that, comprising:

Optimize unit, for after receiving described request message, the PDN confirming between described UE with accessed common data network PDN network be connected need to carry out routing optimality and according to the CAMEL-Subscription-Information of UE confirm APN APN that described PDN connects allow to set up local internet protocol access LIPA connect time, control the type that described PDN connects to be optimized for LIPA to connect, specifically comprise the first judgment sub-unit, the second judgment sub-unit and perform subelement, wherein:

First judgment sub-unit, for judging that described PDN connects the need of carrying out routing optimality, and export judged result, wherein, judge that described PDN connects the need of carrying out routing optimality according to any one in following three kinds of modes: if the type that described PDN connects is connected, according to the address information of the local gateway that the target BS equipment of the current access of UE sends by the RIPA of the local gateway access PDN Internet resources of accessed PDN network internal administration; Judge that whether the gateway address that the described PDN that the address information of described local gateway and self store connects is consistent; If consistent, then it is yes for exporting judged result; If or the type that described PDN connects is connected by the RIPA of the local gateway access PDN Internet resources of accessed PDN network internal administration, selects the local gateway of a current region; Judge that whether the gateway address that the address information of the local gateway selected and the described PDN that self stores connect is consistent; If consistent, then it is yes for exporting judged result; Or judge that described PDN connects the CSGID whether comprising the present access subzone of carrying in described request message in each closed subscriber group identity CSG ID of corresponding accessed PDN network, if the target BS equipment of the current access of UE is Home eNodeB, in described request message, carry the CSG ID of present access subzone; If comprised, then it is yes for exporting judged result;

Second judgment sub-unit, for when the judged result of described first judgment sub-unit output is for being, judges whether the APN that described PDN connects allows to set up LIPA connection, and exporting judged result;

Perform subelement, for when the judged result of described second judgment sub-unit output is for being, controls the type that described PDN connects to be optimized for LIPA and connecting.

8. equipment as claimed in claim 7, is characterized in that, also comprise:

Described execution subelement, specifically for when the judged result of described second judgment sub-unit output is for being, controls the type that described PDN connects to be optimized for LIPA connection by issuing routing optimality mark to the target BS equipment of the current access of UE.

9. equipment as claimed in claim 7, is characterized in that, also comprise:

Memory cell, for storing the type identification for identifying the type that PDN connects; And

Updating block, after the type for connecting at described PDN is optimized for LIPA connection, be revised as LIPA mark by connecting the type identification stored for described PDN, the type that described LIPA mark is used to indicate described PDN connection is that LIPA connects.

10. a data route optimizing system, is characterized in that, comprising:

Data route optimizing equipment, for receiving the request message that described trigger equipment is initiated; The PDN confirming between described UE with accessed common data network PDN network be connected need to carry out routing optimality and according to the CAMEL-Subscription-Information of UE confirm APN APN that described PDN connects allow to set up local internet protocol access LIPA connect time, control the type that described PDN connects to be optimized for LIPA to connect, described data route optimizing equipment is connected according to the PDN that any one in following three kinds of modes confirms between described UE with accessed PDN network and needs to carry out routing optimality:

11. systems as claimed in claim 10, is characterized in that,

Described trigger equipment is described user equipment (UE) self, or the source base station equipment of UE access;

Described data route optimizing equipment is the Mobility Management Entity MME in long evolving system LTE network, or the service universal grouping wireless business supporting node SGSN in universal mobile telecommunications system UMTS network.