CN102474448B - Bypass service implementing method, network unit, network unit proxy, and system thereof - Google Patents
Bypass service implementing method, network unit, network unit proxy, and system thereof Download PDFInfo
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- CN102474448B CN102474448B CN201080024709.5A CN201080024709A CN102474448B CN 102474448 B CN102474448 B CN 102474448B CN 201080024709 A CN201080024709 A CN 201080024709A CN 102474448 B CN102474448 B CN 102474448B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
Abstract
The present invention provides a method for bypassing data service passing through a Home Node B (HNB), a network unit proxy used as the proxy of local network units, a network unit for providing service for User Equipment (UE) in the core network, and the system thereof. The method includes: UE sends an activate PDP context request message; if the Service GPRS Support Node (SGSN) finds out the Access Point Name (APN) in the request message is Local IP Access (LIPA) or Select IP Traffic Offload (SIPTO), the SGSN selects the Gateway GPRS Support Node (GGSN) proxy collocated in HNB gateway (HNB-GW); the SGSN sends a create PDP context request message to the HNB-GW; the GGSN proxy finds out a proper local GGSN and sends the create PDP context request message to this GGSN; the GGSN prepares PDP context and sends back a create PDP context response message; the GGSN proxy forwards the response to the SGSN; then, PDP context update is executed between the SGSN and the GGSN; SGSN sends an activate PDP context receipt message to UE; and UE configures itself with the parameters received from SGSN and enjoys the bypass service through the allocated IP address.
Description
Technical field
The present invention relates to the communications field, relate to the technology realizing bypass data business via Femtocell (HNB/HeNB) particularly.
Background technology
At present, Femtocell (femtocell) is one of topic the most popular in field of telecommunications.It is a kind of low-power wireless access point, works to utilize house DSL or cable broadband to connect network standard mobile device being connected to mobile operator in mandate frequency spectrum.Fig. 1 shows the typical structure of Femtocell.
In 3 gpp, Femtocell is called home node-b (HNB).Iuh interface between HNB subsystem definition HNB and HNB-GW (HNB gateway), as shown in Figure 2.HNB provides wireless coverage in indoor, and it is integrated with the radio resource management function of the function of the Node B of standard and the RNC (radio network controller) of standard.HNB-GW is positioned at mobile operator network, converges the business from numerous HNBs and the Business Stream of convergence is delivered to mobile core network by the Iu-CS/Iu-PS interface of standard.From mobile core network, HNB-GW similarly is a RNC, and it shields the detail of the HNBs being connected to HNB-GW, instead of allows network element in mobile core network see RNC function on numerous HNB.
Propose local IP in 3GPP and access (Local IP Access, LIPA) and select IP operation bypass (Select IP Traffic Offload, SIPTO) be used for not only bypass from mobile wireless access network data service also bypass from the data service of mobile core.
3GPPTS 23.829 has proposed and has analyzed the different structure for LIPA business and SIPTO business, but also to final what structure that adopts does not make decision.In most structures of UMTS system, in HNB, local GGSN (Gateway GPRS Support Node) is used to realize pass-through service/flow.SGSN (Serving GPRS Support Node) in mobile core must safeguard a large amount of local GGSN recorded informations about LIPA and SIPTO business, and needs directly to communicate with the local GGSN in HNB, and this causes very large burden by SGSN.In addition, local GGSN realizes in HNB, if mobile terminal (User Equipment, UE) switch between different HNB, when simultaneously UE has a pass-through service by HNB, now LIPA and SIPTO business also switches between different HNB, and obvious LIPA and SIPTO business delivers to mobile terminal by by different local GGSN.Although 3GPP TS 25.467 proposes solve UE (note: these HNB are connected to same HNB-GW between different HNB, and belong to same CSG group) flow process of switching, but do not send any information to the SGSN in mobile core, the mobile management caused subsequently, business continuance etc. can not get solving by this.
Summary of the invention
In order to solve above-mentioned the problems of the prior art, according to an aspect of the present invention, propose a kind of method for realizing bypass to the data service via femtocell, wherein, this subscriber equipment is connected to femtocell, and the method comprises: subscriber equipment sends to the first network unit in core net and activates PDP Context request message to ask bypass PDN connection establishment; If this first network unit finds that the APN comprised in described activation PDP Context request message is LIPA or SIPTO, then select the local network element agency on the second network unit in Access Network based on this APN; Described first network unit sends and creates PDP Context request message to described second network unit; Described local network element agency finds suitable local network element and forwards this establishment PDP Context request message to this local network element; After receiving this establishment PDP Context request message, this local network element prepares corresponding PDP Context, then beams back the establishment PDP Context response message with distributed IP address; And this establishment PDP Context response message is forwarded to the first network unit in described core net by described local network element agency, sets up corresponding RAB thus.The method also comprises: after setting up corresponding RAB, performs the renewal of PDP Context between described first network unit and described local network element via described local network element agency; Described first network unit sends activation PDP Context and accepts message to described subscriber equipment; With described subscriber equipment utilize from described first network unit parameter configuration himself and enjoy bypass service via distributed IP address.
According to another aspect of the present invention, propose a kind of network element agency for realizing pass-through service, wherein, this network element agency is rendered as the local network element of pass-through service for the first network unit in core net, be rendered as first network unit for the local network element in HNB, its function comprises: for finding suitable local network element when receiving the establishment PDP Context request message from the first network unit in core net and forwarding the first device of this establishment PDP Context request message to this local network element; With for receive from described local network element there is the establishment PDP Context response message of distributed IP address time this message is forwarded to the second device of described first network unit, set up corresponding RAB thus.
According to another aspect again of the present invention, propose a kind of use in the core network for subscriber equipment provides the network element of business, comprising: for when receiving the activation PDP Context request message connected about bypass PDN from described subscriber equipment based on this message in the APN that comprises select local network element agency to carry out the first device of pass-through service; Second device of PDP Context request message to selected local network element agency is created with for sending.
According to another aspect again of the present invention, propose a kind of communication system, comprising: at least one subscriber equipment; As the local network element of the gateway between described subscriber equipment and external network; Network element according to the present invention as the agency of described local network element is acted on behalf of; With with in the core network at least one subscriber equipment described provide business according to network element of the present invention.
Accompanying drawing explanation
By reading below in conjunction with the explanation of accompanying drawing to the specific embodiment of the invention, above-mentioned and other feature and advantage of the present invention will become more obvious.Wherein:
Fig. 1 schematically shows Femtocell deployment architecture;
Fig. 2 schematically shows HNB subsystem;
Fig. 3 schematically shows the bypass reference model based on inventive concept;
Fig. 4 shows an example of the network configuration for pass-through service based on inventive concept;
Fig. 5 shows an example of bypass PDN (Packet Data Network) the connection establishment process based on inventive concept;
Fig. 6 is according to an embodiment of the invention for the flow chart of bypass via the method for the data service of HNB;
Fig. 7 is the block diagram of network element agency according to an embodiment of the invention;
Fig. 8 is the block diagram of network element according to an embodiment of the invention;
Fig. 9 schematically shows E-UTRAN HeNB logical construction; With
Figure 10 schematically shows the bypass reference model for LTE.
Embodiment
The present invention proposes a kind of network architecture for LIPA and SIPTO business, and a kind of for setting up the solution that pass-through service PDN connects efficiently.
According to the solution of the present invention, need to change as follows existing network infrastructure:
-on HNB-GW, adding GGSN agency, local GGSN agency conceals the details of a large amount of local GGSN to the SGSN in mobile core network thus.From the angle of the local GGSN that SGSN, GGSN agency is for pass-through service (i.e. LIPA business, SIPTO business); From the angle of the local GGSN of HNB, GGSN agency is SGSN.
-be that each in running order HNB safeguards its local GGSN information at HNB-GW.For HNB login request message defines new information element (i.e. bypass capability IE).This new information element comprises the IP address whether supporting the instruction of LIPA business, SIPTO business and corresponding local GGSN about HNB.IE when HNB registers to HNB-GW by carrying new definition transmits local GGSN relevant information to HNB-GW.
-SGSN selects the GGSN on HNB-GW to act on behalf of as the GGSN for pass-through service (i.e. LIPA and SIPTO business).When receiving the activation PDP Context request message about (for LIPA or SIPTO business) bypass PDN connection from UE (subscriber equipment), SGSN selects GGSN agency to carry out pass-through service and sends establishment PDP Context request message to act on behalf of to GGSN; This GGSN agency finds suitable local GGSN and forwards this establishment PDP Context request; For switching in the HNB-GW of pass-through service and switching the amendment PDP Context process that can not trigger between GGSN agency and SGSN in closed user group.
It should be pointed out that the solution of the present invention also can be applied to LTE (Long Term Evolution) technology.
Fig. 3 schematically shows the reference model about bypass service, and wherein local GGSN is added in HNB, and GGSN agency is added in HNB-GW.
Fig. 4 schematically shows the network configuration for pass-through service.There are two main network functions: one is the GGSN agency on HNB-GW, and it conceals the details of the local GGSN for pass-through service to SGSN; Another has local GGSN in the local network of HNB (in fact, local GGSN both can be implemented in HNB and also can be implemented near HNB, or even SIPTO is realized in backhaul network), this local GGSN realizes the Gi interface function being used for pass-through service.
It should be pointed out that when HNB is registered on HNB-GW, send HNB login request message to HNB-GW, and in this login request message, with the addition of bypass capability information element (IE) to indicate the bypass capability of HNB.If HNB supports bypass service (i.e. LIPA business, SIPTO business), the local GGSN for LIPA business and the local GGSN for SIPTO business is included.After receiving HNB registration request, HNB-GW can know the bypass capability of this HNB, and for the local GGSN information of GGSN agent maintenance is to select suitable local GGSN when needing to set up bypass PDN connects.It is below an example of this information element.
As described above, when UE is connected to HNB, the GGSN agency on HNB-GW is worked as the local GGSN acting on pass-through service by the SGSN in mobile core.That is, when the UE under a HNB asks bypass service (LIPA business or SIPTO business), SGSN selects GGSN agency as the local GGSN of this service, establishment PDP Context request message is sent to the GGSN agency on HNB-GW, this message is forwarded to again with the tie point of UE immediate suitable local GGSN by this agency.Fig. 4 shows the example of such PDN process of establishing for pass-through service.
Below with reference to the signaling process of Fig. 5, an example of bypass PDN connection establishment process is described.
First, UE sends and activates PDP Context request message to ask bypass PDN connection establishment.Here, the APN (APN) in this message must be LIPA or the SIPTO business of specifying.
Then, when the APN that SGSN finds in this activation PDP Context request message is LIPA or SIPTO business, it selects corresponding GGSN agency be used as the local GGSN of pass-through service and send establishment PDP Context request message to corresponding HNB-GW, and then GGSN agency finds suitable local GGSN and sends this establishment PDP Context request to this local GGSN.
Then, after receiving establishment PDP Context request message, local GGSN prepares corresponding PDP Context, and (this comprises IP address assignment, this IP address assignment can have been come by RADIUS or DHCP), then send it back the establishment PDP Context response message comprising distributed IP address.
Then, GGSN agency can carry out corresponding action, namely records PDP Context information, and forwards this response message to SGSN etc.
Thus, corresponding RAB is established.
The renewal of PDP Context is performed between SGSN and GGSN Proxy (being actually local GGSN), RNC with local GGSN on HNB is set up directly communicate, namely bypass data directly gives local GGSN module by the RNC module on HNB.
Then, SGSN sends activation PDP Context and accepts message to UE.
Finally, the parameter (comprise distributed local ip address) of UE from SGSN configures himself, and then enjoys bypass service.
As can be seen here, the GGSN agency on HNB-GW conceals the details of the local GGSN for pass-through service.If UE moves between different HNB (under same HNB-GW and with mobility in CSG group), then from the angle of SGSN, UE does not change its local GGSN for pass-through service, does not therefore need to exchange any PDP Context updating message between GGSN agency with SGSN.Thus the burden of SGSN alleviates greatly.In addition, via the GGSN agency on HNB-GW, pass-through service (LIPA and SIPTO business) can be provided to the UE being connected to HNB.Meanwhile, by adopting the solution of the present invention, can simplify LIPA and SIPTO service provides and can not impact other network element in mobile core.
Describe according to an embodiment of the invention for the method for bypass via the data service of HNB referring to Fig. 6.The method of the present embodiment is applicable to the structure such as shown in Fig. 3 and Fig. 4.
In step 601, subscriber equipment sends to the first network unit in core net and activates PDP Context request message to ask bypass PDN connection establishment.Here, described subscriber equipment is such as the UE in Fig. 4, and described first network unit is such as the SGSN in Fig. 4.Particularly, in the present embodiment, after UE has been connected to HNB (comprise UE and be registered to HNB-GW), UE has sent the activation PDP Context request message with APN to SGSN.
In step 602, if this first network unit finds that described APN is LIPA or SIPTO business, then select the local network element agency on the second network unit in Access Network based on this APN.Here, described second network unit is such as the HNB-GW in Fig. 4, and described local network element agency is such as the GGSN agency in Fig. 4.Particularly, in the present embodiment, if SGSN finds that APN is LIPA or SIPTO business, then the GGSN agency on HNB-GW is selected.
In step 603, described first network unit sends the local network element agency created on PDP Context request message to described second network unit.Particularly, in the present embodiment, SGSN sends and creates PDP Context request message to the GGSN agency on HNB-GW.
In step 604, described local network element agency finds suitable local network element and forwards this establishment PDP Context request message to this local network element.Here, described local network element is such as the local GGSN in Fig. 4.Particularly, in the present embodiment, GGSN agency such as finds suitable local GGSN by searching in its table and forwards this establishment PDP Context request message to this local GGSN.
In step 605, after receiving this establishment PDP Context request message, this local network element prepares corresponding PDP Context, then beams back the establishment PDP Context response message with distributed IP address.Particularly, in the present embodiment, local GGSN prepares corresponding PDP Context, then beam back to GGSN agency the establishment PDP Context response message comprising distributed IP address, wherein PDP Context comprises IP address assignment, and this IP address assignment such as can obtain address by RADIUS or DHCP to the DHCP/AAA server in local network and come.
In step 606, this establishment PDP Context response message is forwarded to the first network unit in described core net by described local network element agency, sets up corresponding RAB thus.Particularly, in the present embodiment, this establishment PDP Context response message is forwarded to the SGSN in mobile core by GGSN agency.Corresponding RAB is established.
In step 607, after setting up corresponding RAB, between described first network unit and described local network element, perform the renewal of PDP Context via described local network element agency.Particularly, in the present embodiment, SGSN sends the request of amendment PDP Context and acts on behalf of to GGSN, and is transmitted to local GGSN by this agency; Corresponding response message sends to GGSN to act on behalf of by local GGSN, then is forwarded to SGSN.
In step 608, described first network unit sends activation PDP Context and accepts message to described subscriber equipment.Particularly, in the present embodiment, SGSN sends activation PDP Context and accepts message to UE.
Finally, in step 609, described subscriber equipment utilize from described first network unit parameter configuration himself and enjoy bypass service via distributed IP address.Particularly, UE utilize from SGSN parameter configuration himself and enjoy bypass service via distributed IP address.
Known by describing above, by adopt the present embodiment for the method for bypass via the data service of HNB, when UE moves (under same HNB-GW and with mobility in CSG group) between different HNB, because the GGSN agency on HNB-GW shields this mobility, its local GGSN for pass-through service is not changed, therefore without the need to exchanging any PDP Context updating message between GGSN agency with SGSN from the angle UE of SGSN.So thus the burden of SGSN alleviates greatly.Meanwhile, a large amount of local GGSN is concealed, because the realization that this simplify LIPA and SIPTO business does not impact mobile core simultaneously because GGSN agency provides for LIPA and SIPTO business.
Under same inventive concept, according to another aspect of the present invention, a kind of network element agency for realizing pass-through service is provided.Just be described by reference to the accompanying drawings below.
Fig. 7 shows network element agency 700 according to an embodiment of the invention.This network element agency 700 comprises first device 701 and the second device 702.First device 701 is for finding suitable local network element when receiving the establishment PDP Context request message from the first network unit in core net and forwarding this establishment PDP Context request message to this local network element.Such as, when receiving the establishment PDP Context request message from the SGSN in mobile core, first device 701 finds suitable local GGSN by searching in table and this request message is forwarded to this local GGSN.Second device 702 for receive from described local network element there is the establishment PDP Context response message of institute's distributing IP address time this message is forwarded to described first network unit.Such as, the second device 702 when receive from local GGSN there is the establishment PDP Context response message of institute's distributing IP address time this message is forwarded to SGSN, set up corresponding RAB thus.
On the implementation, the network element agency 700 of the present embodiment and its first device 701 comprised and second device 702, can realize in the mode of software, hardware or software and hardware combination.Such as, those skilled in the art are familiar with the multiple equipment that can be used to realize these parts, such as microprocessor, microcontroller, application-specific integrated circuit (ASIC) (ASIC), programmable logic device (PLD) and/or field programmable gate array (FPGA) etc.The network element agency of the present embodiment can integrate realization with network element, also can independently realize separately, and each part of this network element agency also can physically separate realization and operate Shangdi and be interconnected.
Operationally, the network element agency 700 that above-mentioned composition graphs 7 illustrates, can realize previously described for the method for bypass via the data service of HNB.700 are acted on behalf of by using this network element, when UE moves (under same HNB-GW and with mobility in CSG group) between different HNB, its local GGSN for pass-through service is not changed, therefore without the need to exchanging any PDP Context updating message between GGSN agency with SGSN from the angle UE of SGSN.Thus the burden of SGSN alleviates greatly.Meanwhile, conceal a large amount of local GGSN because GGSN agency provides for LIPA and SIPTO business, provide because this simplify LIPA and SIPTO and mobile core is not impacted.
Under same inventive concept, according to another aspect again of the present invention, provide a kind of use in the core network for subscriber equipment provides the network element of business.Just be described by reference to the accompanying drawings below.
Fig. 8 shows network element 800 according to an embodiment of the invention.This network element 800 comprises first device 801 and the second device 802.First device 801 for when receiving the activation PDP Context request message connected about bypass PDN from described subscriber equipment based on this message in the APN that comprises select local network element agency to carry out pass-through service.Such as, first device 801, when receiving the activation PDP Context request message from UE, selects local GGSN to act on behalf of pass-through service based on the APN comprised in this message.Second device 802 creates PDP Context request message to selected local network element agency for sending.Such as, the second device 802 sends and creates PDP Context request message to selected local GGSN agency.
On the implementation, the network element 800 of the present embodiment and its first device 801 comprised and the second device 802, can realize in the mode of software, hardware or software and hardware combination.Such as, those skilled in the art are familiar with the multiple equipment that can be used to realize these parts, such as microprocessor, microcontroller, application-specific integrated circuit (ASIC) (ASIC), programmable logic device (PLD) and/or field programmable gate array (FPGA) etc.Each part of the network element of the present embodiment physically can separate and realizes and operate Shangdi and be interconnected.
Operationally, the network element 800 that above-mentioned composition graphs 8 illustrates, can realize previously described for the method for bypass via the data service of HNB.By using this network element 800, when UE moves (under same HNB-GW and with mobility in CSG group) between different HNB, its local GGSN for pass-through service is not changed, therefore without the need to exchanging any PDP Context updating message between GGSN agency with SGSN from the angle UE of SGSN.Thus the burden of SGSN alleviates greatly.Meanwhile, conceal a large amount of local GGSN because GGSN agency provides for LIPA and SIPTO, provide because this simplify LIPA and SIPTO and mobile core is not impacted.
Under same inventive concept, according to another aspect again of the present invention, also proposed a kind of communication system, this communication system comprises at least one subscriber equipment, the local network element as the gateway between described subscriber equipment and external network, the local network element as the agency of described local network element are acted on behalf of and with in the core network at least one subscriber equipment described provides the network element of business.In addition, described communication system can also comprise other network element, such as router etc.
Such as, in the communication system of the present embodiment, if UE moves between different HNB (under same HNB-GW and with mobility in CSG group), then from the angle of SGSN, UE does not change its local GGSN for pass-through service, does not therefore need to exchange any PDP Context updating message between GGSN agency with SGSN.Concrete operating process can see above to according to the embodiment of the present invention for the description of bypass via the method for the data service of HNB, it is not repeated at this.
In addition, Fig. 8 schematically shows E-UTRAN HeNB logical construction.Family eNB gateway (HeNB-GW) allows the S1 Interface Expanding between HeNB and EPC to become to support a large amount of HeNB.HeNB-GW is used as the hub of C-Plane, S1-MME interface specifically.The solution of the present invention also goes for this structure.No longer it is repeated at this.
Fig. 9 schematically shows the bypass reference model for LTE.P-GW agency on HeNB-GW corresponds to the GGSN agency of the HNB-GW in UMTS.Equally, the solution of the present invention also goes for this model.No longer it is repeated at this.
Although be described in detail via the method for the data service of HNB, network element agency, network element and system for bypass of the present invention by some exemplary embodiments above, but these embodiments above are not exhaustive, and those skilled in the art can realize variations and modifications within the spirit and scope of the present invention.Therefore, the present invention is not limited to these embodiments, and scope of the present invention is only as the criterion by claims.
Claims (16)
1. for the method for bypass via the data service of femtocell, wherein, this subscriber equipment is connected to femtocell, and the method comprises the following steps:
Subscriber equipment sends to the first network unit in core net and activates PDP Context request message to ask bypass PDN connection establishment;
If this first network unit finds that the APN comprised in described activation PDP Context request message is LIPA or SIPTO, then select the local network element agency on the second network unit in Access Network based on this APN;
Described first network unit sends and creates PDP Context request message to described second network unit;
Described local network element agency finds suitable local network element and forwards this establishment PDP Context request message to this local network element;
After receiving this establishment PDP Context request message, this local network element prepares corresponding PDP Context, then beams back the establishment PDP Context response message with distributed IP address; And
This establishment PDP Context response message is forwarded to the first network unit in described core net by described local network element agency, sets up corresponding RAB thus.
2. method according to claim 1, also comprises:
After setting up corresponding RAB, between described first network unit and described local network element, perform the renewal of PDP Context via described local network element agency;
Described first network unit sends activation PDP Context and accepts message to described subscriber equipment; With
Described subscriber equipment utilize from described first network unit parameter configuration himself and enjoy bypass service via distributed IP address.
3. method according to claim 1 and 2, wherein, described first network unit is SGSN, and described second network unit is HNB-GW, and described local network element is local GGSN.
4. method according to claim 1 and 2, wherein, the APN in described activation PDP Context request message is all known APN for LIPA business or SIPTO business.
5. method according to claim 1 and 2, wherein, prepares corresponding PDP Context and comprises IP address assignment for pass-through service.
6. method according to claim 1 and 2, wherein, described local network element agency, before described establishment PDP Context response message is forwarded to described first network unit, records described PDP Context information.
7. method according to claim 1 and 2, wherein, femtocell is registered to described second network unit by sending login request message to described second network unit, wherein with the addition of bypass capability information element in this login request message to indicate the bypass capability of this femtocell.
8. act on behalf of for the network element realizing pass-through service for one kind, wherein, this network element agency is rendered as the local network element of pass-through service for the first network unit in core net, be rendered as first network unit for local network element, it comprises:
For finding suitable local network element when receiving the establishment PDP Context request message from the first network unit in core net and forwarding the first device of this establishment PDP Context request message to this local network element; With
For receive from described local network element there is the establishment PDP Context response message of distributed IP address time this message is forwarded to the second device of described first network unit, set up corresponding RAB thus.
9. network element according to claim 8 agency, wherein, finds suitable local network element to be that the local network element finding this suitable in table by acting on behalf of in this network element realizes.
10. according to claim 8 or claim 9 network element agency, wherein, this network element agency be GGSN agency, described first network unit is SGSN, and described local network element is local GGSN.
11. network element agencies according to claim 8 or claim 9, wherein, described network element agency, before described establishment PDP Context response message is forwarded to described first network unit, records described PDP Context information.
12. 1 kinds with in the core network for subscriber equipment provides the network element of business, comprising:
For when receiving the activation PDP Context request message connected about bypass PDN from described subscriber equipment based on this message in the APN that comprises select local network element agency to carry out the first device of pass-through service; With
Second device of PDP Context request message to selected local network element agency is created for sending.
13. network element according to claim 12, wherein, select local network element agency to select based on described APN.
14. network element according to claim 12 or 13, wherein, described network element is SGSN, and described local network element agency is GGSN agency.
15. network element according to claim 12 or 13, wherein, the APN in described activation PDP Context request message is all known APN for LIPA business or SIPTO business.
16. 1 kinds of communication systems, comprising:
At least one subscriber equipment;
As the local network element of the gateway between described subscriber equipment and external network;
As the agency of described local network element according to Claim 8 to 11 described in network element agency; With
With in the core network at least one subscriber equipment described provide business according to claim 12 to the network element described in 15.
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| PCT/CN2010/072562 WO2011140697A1 (en) | 2010-05-10 | 2010-05-10 | Bypass service implementing method, network unit, network unit proxy, and system thereof |
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2010
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| CN101064936A (en) * | 2006-04-28 | 2007-10-31 | 华为技术有限公司 | Method and system for accessing home zone of roaming users |
| CN101202702A (en) * | 2006-12-12 | 2008-06-18 | 华为技术有限公司 | Network flow quantity shunting method and network device |
| WO2008125729A1 (en) * | 2007-04-13 | 2008-10-23 | Nokia Corporation | Method, radio system, mobile terminal and base station for providing local breakout service |
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| CN102474448A (en) | 2012-05-23 |
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