CN102469560A

CN102469560A - Method of selecting wireless access gateway for access equipment and equipment thereof

Info

Publication number: CN102469560A
Application number: CN2010105365634A
Authority: CN
Inventors: 焦斌; 杨义
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2010-11-04
Filing date: 2010-11-04
Publication date: 2012-05-23
Anticipated expiration: 2030-11-04
Also published as: CN102469560B; WO2012059006A1

Abstract

The invention discloses a method of selecting a wireless access gateway for access equipment and equipment thereof. The method comprises the following steps that: during an access process of the access equipment, through an initial user message, an access network node indicates whether a core network node selects the local wireless access gateway of the access network for the access equipment; under the condition that the access network node indicates the core network node to select the local wireless access gateway of the access network for the access equipment, when receiving an initial context establishment request, the access network node determines whether the corresponding gateway is located in access network locality according to wireless access gateway information carried in the request and carries out corresponding processing according to a determination result. By using the method and the equipment of the invention, the access network node can select the local wireless access gate of the wireless access network for the access equipment.

Description

Select the method and the equipment thereof of wireless access gateway for access device

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of method and equipment thereof of selecting wireless access gateway for access device.

Background technology

GSM in future; Three generations (Beyond Third Generation for example; B3G) in the system or LTE-A (Long Term Evolution-Advanced) system,, also need bigger bandwidth simultaneously with higher peak data rate and cell throughout is provided.At present the unassigned bandwidth below the 2GHz seldom, the part or all of bandwidth that the B3G system needs can only be on higher frequency range, for example 3GHz is above seeks.Frequency range is high more, and it is fast more that radio wave propagation is decayed, and transmission range is short more, under the therefore same overlay area, guarantee continuous covering, needs more base station, because the base station has higher cost usually, this can increase the cost of arranging net undoubtedly.In order to solve arrange net cost and covering problem, each manufacturer and standardization body begin one's study relaying are incorporated in the cellular system, cover to increase.

Fig. 1 introduces via node (Relay Node for the LTE-A system; RN) network architecture after; RN is linked into core net (EPC) through the donor cell under the eNB (base station) (alms giver sub-district), and RN and core net do not have direct wireline interface, and each RN can control one or more sub-districts.Under this framework, the interface between UE and the RN is called the Uu mouth, and the interface between RN and the DeNB (Donor Evolved Node B, donor base station) is called the Un mouth.

RN in this framework has dual identity.At first, RN has the identity of UE (User Equipment, subscriber equipment), and RN is similar to the start attaching process of UE when starting.RN has S-GW/P-GW (Serving Gateway/PDN Gateway, gateway/packet data gateway) and the Control Node MME (Mobility Management Entity, Mobility Management Entity) of oneself.Secondly, for the UE that inserts RN, RN has the identity of eNB, and this moment, the downlink data of UE need send to the serving BS of UE from the S-GW/P-GW of UE, i.e. RN, and RN issues UE on the Uu mouth then.

As shown in Figure 2, the RN start-up course can be described as: set up RRC between RN and the DeNB and be connected; RN sends attach request to MME; MME locates to obtain Ciphering Key from HSS (Home Subscriber Server, home subscriber server), and RN is carried out authentication; If authentication is passed through, MME for RN sets up default bearing, and sends initial context to DeNB and sets up request message in S-GW/P-GW, in DeNB, sets up the Access Layer context of RN; DeNB sends RRC to RN and connects reconfiguration message subsequently, carries MME and issues adhering to of RN and accept message; RN returns RRC and connects to reshuffle to accomplish and confirm.Like this, RN has set up basic IP connection.

Then, OAM (Operation and Maintenance, operation and maintenance system) downloads to RN with node configuration information, and RN is configured.After RN sets up necessary S1 interface and X2 interface again, just can be as the base station operate as normal.

In the prior art, when an eNB and MME have communication requirement, the S1 interface need set up each other.It is as shown in Figure 3 that the S1 interface is set up process.ENB sends S1 to MME and sets up request message (S1Setup Request), comprises information such as eNB title, Tracking Area Code TAC, PLMN (Public LandMobile Network, public land mobile network) ID in this message.After MME receives that S1 sets up request message; Preserve these information of eNB; Then oneself information such as title, GUMMEI (Globally Unique MMEIdentifier, global unique MME identifier), capacity being placed on S1 sets up in the response message (S1 SetupResponse) notice and gives eNB.The latter receives these information of back preservation.Through this process, mutual application layer configuration data between eNB and the MME.

When an eNB need upgrade the configuration of S1 Application of Interface, the TA (Tracking Area, tracing area) such as increase and decrease or modification support then need carry out eNB config update process, and was as shown in Figure 4.ENB sends eNB configuration update message (eNB Configuration Update) to MME, comprises the information such as TA of increase and decrease.If MME can accept current renewal, then upgrade the S1 interface configuration information of the eNB that oneself stores, and return eNB config update acknowledge message to eNB.

In the prior art; Select to select all to be based on MME control realization for the P-GW of common UE with S-GW; Be that MME is that UE selects P-GW according to the type of service that UE asked, MME selects S-GW (have a plurality of S-GW and can be certain TA district UE service) according to the TA district at the current place of UE for UE.Be linked into as UE in the process of network at RN, Phase I selects to require fully different with the selection of S-GW to P-GW with Phase II.In Phase I, the selection of P-GW and the selection of S-GW can be reused the method that P-GW selects and S-GW selects of MME control in the prior art fully; And in Phase II, require to be positioned at wireless access network this locality, otherwise will cause the RN can't operate as normal for P-GW and S-GW that RN selects.

The inventor finds that there is following defective at least in prior art in realizing process of the present invention:

Because in the prior art and do not require that P-GW that MME selects and S-GW must be specific and unique P-GW and (for example MME maybe be according to perhaps perhaps some characteristic of factor such as load balancing of the strategy of operator for S-GW; Be UE Dynamic Selection suitable P-GW and S-GW); And for RN under the scene of Phase II access network, solution is not arranged at present as yet.

Summary of the invention

The object of the present invention is to provide a kind of method and equipment thereof for access device selection wireless access gateway, is that access device is selected wireless access network local wireless IAD to realize by the line access node control, and for this reason, the present invention adopts following technical scheme:

A kind of method for access device selection wireless access gateway comprises:

In the access device access procedure, access network node is through initial user message, and whether the indication core net node is that said access device is selected the local wireless access gateway of Access Network;

At said access network node indication core net node is that said access device is selected under the situation of the local wireless access gateway of Access Network; When said access network node is receiving initial context that said core net node sends when setting up request; According to the wireless access gateway information of wherein carrying; Judge whether corresponding gateway is positioned at Access Network this locality, and carry out handled according to judged result.

A kind of access network node equipment comprises:

Whether indicating module is used at the access device access procedure, be that said access device is selected the local wireless access gateway of Access Network through initial user message indication core net node;

Judge module; Being used at said access network node indication core net node is that said access device is selected under the situation of the local wireless access gateway of Access Network; When said access network node is receiving initial context that said core net node sends when setting up request; According to the wireless access gateway information of wherein carrying, judge whether corresponding gateway is positioned at Access Network this locality;

Processing module set up in context, is used for carrying out handled according to the judged result of said judge module.

A kind of method for access device selection wireless access gateway comprises:

In the access device access procedure; The indication information that is used to indicate whether to select for said access device the local wireless access gateway of Access Network that carries in the initial user message of core net node according to the access network node transmission is that said access device is selected wireless access gateway;

Said core net node is set up request message through initial context, and the information of the wireless access gateway of selecting is sent to said access network node.

A kind of core net node equipment comprises:

Select module; Be used at the access device access procedure; The indication information that is used to indicate whether to select for said access device the local wireless access gateway of Access Network that carries in the initial user message according to the access network node transmission is that said access device is selected wireless access gateway;

Sending module is used for setting up request message through initial context, and the information of the wireless access gateway that said selection module is selected sends to said access network node.

The above embodiment of the present invention; Through in the access device access procedure; Whether by access network node indication core net node is that said access device is selected the local wireless access gateway of Access Network; And judge further when setting up context whether core net selects wireless access gateway for access device as requested for access device; And carry out context according to judged result and set up operation, thereby realized by the line access node control being that access device is selected wireless access network local wireless IAD.

Description of drawings

Fig. 1 is for comprising the E-UTRAN network architecture sketch map of RN in the prior art;

Fig. 2 is a RN start-up course sketch map in the prior art;

Fig. 3 sets up the process sketch map for S1 in the prior art connects;

Fig. 4 is an eNB config update process sketch map in the prior art;

The overall procedure sketch map that Fig. 5 provides for the embodiment of the invention for RN selection wireless access gateway;

DeNB control MME is the schematic flow sheet that RN selects wireless access gateway in the RN access network process that Fig. 6 provides for one embodiment of the invention;

DeNB control MME is the schematic flow sheet that RN selects wireless access gateway in the RN access network process that Fig. 7 provides for another embodiment of the present invention;

DeNB control MME is the schematic flow sheet that RN selects wireless access gateway in the RN access network process that Fig. 8 provides for another embodiment of the present invention;

The structural representation of the access network node equipment that Fig. 9 provides for the embodiment of the invention;

The structural representation of the core net node equipment that Figure 10 provides for the embodiment of the invention.

Embodiment

To the problem that above-mentioned prior art exists, the embodiment of the invention provides a kind of and has controlled and confirmed as the mechanism that P-GW that RN chooses and S-GW are positioned at wireless access network this locality by wireless access network node self (for example DeNB).In embodiments of the present invention; MME is according to the indication information of wireless access network equipment (for example DeNB); Judge whether to select local S-GW of wireless access network or the local P-GW of wireless access network, and carry out handled according to judged result for current access device (for example RN).

Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.

Referring to Fig. 5, be the overall procedure sketch map that the embodiment of the invention provides for access device (like RN) selection wireless access gateway, this flow process can comprise:

Step 501; Wireless access network node (for example DeNB) will be positioned at the local S-GW of wireless access network or the address information of P-GW reports to core net node (for example MME); Be used for the S11 interface between core net node foundation and the above-mentioned local S-GW, or the S5 interface between S-GW and the local P-GW.

Step 502, (for example DeNB) need set up in the process of initial context for radio reception device (for example RN) when wireless access network node, is designated as current wireless access device (for example RN) and selects whether local S-GW or local P-GW are necessary.

Step 503; When core net node (for example MME) initiates the user's context of radio reception device (for example RN) is set up in the process; Whether wireless access network node (for example DeNB) need be judged step 502 and satisfy, and only under the condition that step 502 satisfies, could confirm the initial context of radio reception device (for example RN) is set up successfully; Otherwise refuse above-mentioned initial context and set up request, and can further in refuse information, indicate reason.

Need to prove there is not strict sequencing between each step of above-mentioned flow process, and can omit for some step among some embodiment.

Be that DeNB, core net node are that MME, radio reception device are that the network architecture of RN is an example below with the wireless access network node, and combine Fig. 6, Fig. 7 and Fig. 8, the embodiment of the invention is explained in further detail.

Referring to Fig. 6, DeNB control MME is the schematic flow sheet that RN selects wireless access gateway in the RN access network process that provides for one embodiment of the invention.In this flow process; DeNB the S1 interface set up or updating message in carry local S-GW address information or/and the P-GW address information is that RN selects S-GW or/and P-GW for MME, and the S-GW that DeNB indicates whether to select local access network for RN to MME in initial user message is or/and P-GW.As shown in the figure, this flow process can comprise following several stages:

The startup stage of stage 1:DeNB

Setting up S1 with MME after DeNB starts is connected; And connect at S1 and to set up in the process; With the local S-GW of wireless access network or/and the address of P-GW (also can be sign wait can the unique identification gateway information) send to MME, MME with S-GW or/and the address of P-GW and corresponding DeNB sign and incidence relation be kept in self context.

Wherein, set up in the S1 connection procedure at DeNB and MME, the S1 that DeNB sends sets up the format and content of request message can be as shown in table 1.

Table 1

In the table 1, S-GW and P-GW can adopt independently IE (like Local P-GW address in the table 1 and Local S-GW address), also can adopt same IE, integrate such as S-GW and P-GW, when having identical IP address.

The startup stage of stage 2:RN, this stage can comprise the steps:

Step 601 behind the RN starting up, is set up RRC with DeNB and is connected, and in reciprocal process, carries indication information (for example RN identity indication) and gives DeNB.

Step 602, DeNB judges whether to be forced to the local S-GW of RN selection wireless access network or/and the local P-GW of wireless access network according to the indication information that receives and self type context.

Step 603; DeNB is according to judged result; Through two information indicating bits in the initial user message (Initial UE message) (for example Local P-GW selection indication and Local S-GWselection indication), indicate MME whether to be necessary for RN respectively and select the local S-GW of Access Network and whether be necessary for RN to select the local P-GW of Access Network.The format and content of Initial UE message message can be shown in table 2a.

Table 2a

In this step, DeNB can an information indicating bit (for example Local GW selection indication) the indication MME in Initial UE message be that RN selects local access network P-GW and/or S-GW also.The format and content of this Initial UE message can be shown in table 2b.

Table 2b

Wherein, Local GW selection indication cell also can be shown in table 2c.

Table 2c

Step 604, MME judges whether to be necessary for the local S-GW of RN selection wireless access network or/and the local P-GW of wireless access network if be judged as is, then execution in step 605a according to the indication information that carries among the Initial UE message that receives; Otherwise, execution in step 605b, that is, MME can carry out S-GW or/and P-GW selects according to prior art.

Step 605a if judge need be for RN select the local S-GW of wireless access network to MME, be that RN selects S-GW or/and P-GW according to this judged result then, and the S-GW initiation session in wireless access network is set up process.Further, MME sends to S-GW with the P-GW address of selecting, and S-GW initiates chain of command according to the address of P-GW to target P-GW and connects.Wherein, the S-GW address that the contextual information that MME is preserved the startup stage of can be according to DeNB obtains binding with current DeNB ID is or/and the P-GW address, and selects S-GW or/and P-GW as RN.

Need to prove that the S-GW among the figure, P-GW are meant S-GW and the P-GW that is positioned at core net.Though be to draw according to the mode that S-GW function and P-GW function are integrated on the DeNB in the drawings, S-GW function and P-GW function that wireless access network is local both can be integrated on the DeNB, also can be the specific installations that is positioned at wireless access network.

Step 605b need can be that RN selects a S-GW who is positioned at core net according to prior art then, and the S-GW initiation session in this core net not set up process for RN selects the local S-GW of wireless access network if MME judges.Further, MME sends to S-GW with the P-GW address of selecting, and S-GW initiates chain of command according to the address of P-GW to target P-GW and connects.

Step 606; MME sets up request message through initial context; Triggering DeNB is that RN sets up context, and in message, carries the P-GW that selects for RN or/and the indication information of S-GW (this indication information can be sign or the address information of P-GW or S-GW).Wherein, initial context set up the format and content of request message can be as shown in table 3.

Table 3

Wherein, P-GW Selection Indication and S-GW Selection Indication are respectively the indication information cells of P-GW and S-GW.

Step 607, DeNB according to the initial context that receives set up carry in the request message for the P-GW of RN selection or/and the indication information of S-GW, judge whether with indicated consistent in step 603.

For example, if DeNB indication in step 603 need be selected the local P-GW of wireless access network for RN, then DeNB can check MME is whether the P-GW that RN selects is positioned at wireless access network this locality.If DeNB indication in step 603 need be selected the local S-GW of wireless access network for RN, then DeNB can check MME is whether the S-GW that RN selects is positioned at wireless access network this locality.If DeNB had not both had indication to select the local P-GW of wireless access network for RN in step 103, also indication need not selected the local S-GW of wireless access network for RN, and then DeNB skips the current check step and thinks that check result is true.

Step 608a, if being judged as in the step 607 " very ", then DeNB is that RN sets up initial context, and sends the initial context response message and give MME.

Step 608d, if being judged as in the step 607 " vacation ", then the initial context of DeNB refusal MME is set up request, and in sending to the failure of establishing initial context message of MME, carries failure cause.

In the above-mentioned flow process, when the changing of the address of local S-GW of wireless access network or P-GW, DeNB initiates S1 and connects renewal process, and MME upgrades the S-GW that preserves in its context or/and the address of P-GW and corresponding DeNB identification information and incidence relation thereof.Wherein, the format and content of the configuration update message of DeNB initiation can be as shown in table 4.

Table 4

Wherein, Local P-GW address and Local S-GW address cell are respectively applied for and carry P-GW address and S-GW address.

Referring to Fig. 7, DeNB control MME is the schematic flow sheet that RN selects wireless access gateway in the RN access network process that provides for another embodiment of the present invention.What this flow process was different with flow process shown in Figure 6 is, DeNB or/and the P-GW address information sends to MME, is that RN select S-GW or/and P-GW for MME through initial user message S-GW address information that wireless access network is local; In addition, whether DeNB is that RN selects the local S-GW of Access Network or/and during P-GW, the indication information that is carried on this message can only be that S-GW is or/and the address information of P-GW through initial user message indication MME.As shown in the figure, this flow process can comprise:

Step 701 behind the RN starting up, is set up RRC with the base station and is connected, and in reciprocal process, carries indication information (for example RN identity indication) and gives DeNB.

Step 702, DeNB judges whether to be forced to RN and selects local S-GW of wireless access network or the local P-GW of wireless access network according to the indication information that receives and self type context.

Step 703; DeNB is according to judged result; Through two information indicating bits in the initial user message (Initial UE message) (for example Local P-GW selection indication and Local S-GWselection indication), indicate MME whether to be necessary for RN respectively and select local S-GW of Access Network and P-GW.Select the local S-GW of Access Network for RN or/and during P-GW at needs, respectively that wireless access network is the local S-GW of DeNB is or/and the P-GW address information sends to MME.Wherein, the format and content of Initial UEmessage message can be as shown in table 5.

Table 5

Wherein, Whether Local P-GW selection indication and Local S-GW selection indication cell are respectively applied for and are designated as RN and select the local S-GW of Access Network necessary with P-GW, and Local P-GWaddress and Local S-GW address cell are respectively applied for carrying S-GW address and P-GW address.

In this step; When DeNB need be forced to local P-GW of RN selection wireless access network and/or S-GW in judgement; Also can only that wireless access network is local P-GW and/or S-GW address information send to MME, select indication information (like Local P-GW selection indication and Local S-GW selection indication) and do not send GW to MME.

Step 704, MME judges whether to be necessary for RN according to the indication information that carries among the Initial UE message that receives and selects local S-GW of wireless access network or the local P-GW of wireless access network, if be judged as is, then execution in step 705a; Otherwise, execution in step 705b, that is, MME can carry out S-GW and P-GW selection according to prior art.

In this step,, then can think the P-GW and/or the S-GW that need select local access network for RN if MME has only received P-GW and/or S-GW address information that wireless access network is local.

Step 705a; If judging, MME need select the local S-GW of wireless access network for RN; Be that RN selects S-GW or/and P-GW then, and the S-GW in wireless access network (supposing that here DeNB and Access Network this locality S-GW is positioned on the same physical entity) initiation session is set up process according to this judged result.Further, MME sends to S-GW with the P-GW address of selecting, and S-GW initiates chain of command according to the address of P-GW to target P-GW and connects.Wherein, MME can select S-GW or/and P-GW or/and the P-GW address is RN according to the S-GW that obtains in the step 703.

Step 705b need can be not that one of RN selection is positioned at the S-GW of core net and sets up process to the S-GW of this core net initiation session according to prior art then for RN selects the local S-GW of wireless access network if MME judges.Further, MME sends to S-GW with the P-GW address of selecting, and S-GW initiates chain of command according to the address of P-GW to target P-GW and connects.

Step 706; MME sets up request message through initial context; Triggering DeNB is that RN sets up context, and in message, carries the P-GW that selects for RN or/and the indication information of S-GW (this indication information can be sign or the address information of P-GW or S-GW).Wherein, initial context set up the format and content of request message can be as shown in table 6.

Table 6

Wherein, P-GW Selection Indication and S-GW Selection Indication cell are respectively applied for and are designated as P-GW or the S-GW that RN selects.

Step 707, DeNB according to the initial context that receives set up carry in the request message for the P-GW of RN selection or/and the indication information of S-GW, judge whether with indicated consistent in step 703.

For example, if DeNB indication in step 703 need be selected the local P-GW of wireless access network for RN, then DeNB can check MME is whether the P-GW that RN selects is positioned at wireless access network this locality.If DeNB indication in step 703 need be selected the local S-GW of wireless access network for RN, then DeNB can check MME is whether the S-GW that RN selects is positioned at wireless access network this locality.If DeNB had not both had indication to select the local P-GW of wireless access network for RN in step 703, also indication need not selected the local S-GW of wireless access network for RN, and then DeNB skips the current check step and thinks that check result is true.

Step 708a, if being judged as in the step 707 " very ", then DeNB is that RN sets up initial context, and sends the initial context response message and give MME.

Step 708b, if being judged as in the step 707 " vacation ", then the initial context of DeNB refusal MME is set up request, and in sending to the failure of establishing initial context message of MME, carries failure cause.

Referring to Fig. 8, DeNB control MME is the schematic flow sheet that RN selects wireless access gateway in the RN access network process that provides for another embodiment of the present invention.What this flow process was different with flow process shown in Figure 7 is, the wireless access network S-GW that MME obtains to be associated with DeNB through DNS (Nomain Name System, domain name analysis system) inquiry mode is or/and the P-GW address.As shown in the figure, this flow process can comprise:

Step 801 behind the RN starting up, is set up RRC with DeNB and is connected, and in reciprocal process, carries indication information (for example RN identity indication) and gives DeNB.

Step 802, DeNB judges whether to be forced to the local S-GW of RN selection wireless access network or/and the local P-GW of wireless access network according to the indication information that receives and self type context.

Step 803; DeNB is according to judged result; Through two information indicating bits in the initial user message (Initial UE message) (for example Local P-GW selection indication and Local S-GWselection indication), indicate MME whether to be necessary for RN respectively and select the local S-GW of Access Network or/and whether be necessary for the local P-GW of RN selection Access Network.The format and content of Initial UE message message can be as shown in table 7.

Table 7

Step 804, MME judges whether to be necessary for the local S-GW of RN selection wireless access network or/and the local P-GW of wireless access network if be judged as is, then execution in step 805a according to the indication information that carries among the Initial UE message that receives; Otherwise, execution in step 805b, that is, MME can carry out S-GW and P-GW selection according to prior art.

Step 805a; If judging, MME need select the local S-GW of wireless access network for RN; Then obtain the local S-GW of Access Network through the DNS inquiry mode or/and the P-GW address, and the S-GW in wireless access network (supposing that here DeNB and Access Network this locality S-GW is positioned on the same physical entity) initiation session is set up process according to this judged result.Further, MME sends to S-GW with the P-GW address of selecting, and S-GW initiates chain of command according to the address of P-GW to target P-GW and connects.Wherein, If judging, MME need select the local S-GW of wireless access network or/and P-GW for RN; Then MME sends to DNS with DeNB ID as index, and the DNS system inquires about and the gateway address information that inquiry obtains is sent to MME according to the type of DeNB ID with the inquiry gateway.

Step 805b need be not that one of RN selection is positioned at the S-GW of core net and sets up process to the S-GW of this core net initiation session according to prior art then for RN selects the local S-GW of wireless access network if MME judges.Further, MME sends to S-GW with the P-GW address of selecting, and S-GW initiates chain of command according to the address of P-GW to target P-GW and connects.

Step 806; MME sets up request message through initial context; Triggering DeNB is that RN sets up context, and in message item, carries the P-GW that selects for RN or/and the indication information of S-GW (this indication information can be sign or the address information of P-GW or S-GW).Wherein, initial context set up request message can be as shown in table 8.

Table 8

Wherein, P-GW Selection Indication and S-GW Selection Indication cell are respectively applied for and carry P-GW sign and S-GW sign.

Step 807, DeNB according to the initial context that receives set up carry in the request message for the P-GW of RN selection or/and the indication information of S-GW, judge whether with indicated consistent in step 803.

For example, if DeNB indication in step 803 need be selected the local P-GW of wireless access network for RN, then DeNB can check MME is whether the P-GW that RN selects is positioned at wireless access network this locality.If DeNB indication in step 803 need be selected the local S-GW of wireless access network for RN, then DeNB can check MME is whether the S-GW that RN selects is positioned at wireless access network this locality.If DeNB had not both had indication to select the local P-GW of wireless access network for RN in step 803, also indication need not selected the local S-GW of wireless access network for RN, and then DeNB skips the current check step and thinks that check result is true.

Step 808a, if being judged as in the step 807 " very ", then DeNB is that RN sets up initial context, and sends the initial context response message and give MME.

Step 808b, if being judged as in the step 807 " vacation ", then the initial context of DeNB refusal MME is set up request, and asks in sending to the failure of establishing initial context message of MME, carries failure cause.

Based on identical technical conceive, the embodiment of the invention also provides the network equipment that can be used for above-mentioned flow process.

Referring to Fig. 9, the structural representation of the access network node equipment that provides for the embodiment of the invention, this network equipment can be a base station equipment.As shown in the figure, this access network node equipment can comprise:

Whether indicating module 901 is used at the access device access procedure, be that said access device is selected the local wireless access gateway of Access Network through initial user message indication core net node;

Judge module 902; Being used at said access network node indication core net node is that said access device is selected under the situation of the local wireless access gateway of Access Network; When said access network node is receiving initial context that said core net node sends when setting up request; According to the wireless access gateway information of wherein carrying, judge whether corresponding gateway is positioned at Access Network this locality;

Processing module 903 set up in context, is used for carrying out handled according to the judged result of judge module 902.

In the above-mentioned access network node equipment, indicating module 901 can indicate whether that selecting the indication information of the local wireless access gateway of Access Network for access device is carried on initial user message with being used to.

In the above-mentioned access network node equipment; Indicating module 901 can be with the sign that is used to indicate whether to select for access device Access Network local service gateway; Or/and, be used to indicate whether that selecting the sign of the local packet data gateway of Access Network for access device is carried on initial user message; Perhaps, Access Network local service gateway address or the sign that will select for access device are or/and the address or the sign of the local packet data gateway of selecting for access device of Access Network are carried on initial user message.

In the above-mentioned access network node equipment, context is set up processing module 903 and can specifically be used for: the pairing gateway of wireless access gateway information that receives when judgement is positioned at Access Network when local, for said access device is set up initial context; Perhaps, the pairing gateway of wireless access gateway information that receives when judgement is not positioned at Access Network when local, refuses to set up initial context for said access device.

In the above-mentioned access network node equipment, context is set up processing module 903 and can also be used for: if refusal is set up initial context for said access device, then return the failure of establishing initial context response to said core net node, wherein carry failure cause.

In the above-mentioned access network node equipment, indicating module 901 also can send to core net node through the initial user message wireless access gateway information that Access Network is local, is that access device is selected wireless access gateway for core net node.

Above-mentioned access network node equipment also can comprise: insert processing module 904; Be used at said access network node at access procedure; The wireless access gateway information that Access Network is local sends to core net node, is that access device is selected wireless access gateway for core net node.

Referring to Figure 10, the structural representation of the core net node equipment that provides for the embodiment of the invention, this core net node equipment can be MME.As shown in the figure, this core net node equipment can comprise:

Select module 1001; Be used at the access device access procedure; The indication information that is used to indicate whether to select for said access device the local wireless access gateway of Access Network that carries in the initial user message according to the access network node transmission is that said access device is selected wireless access gateway;

Sending module 1002 is used for setting up request message through initial context, and the information of the wireless access gateway of selecting module 1001 to select is sent to said access network node.

Above-mentioned core net node equipment can comprise that also one of following acquisition module obtains combination:

First acquisition module 1003; Be used at said access network node access procedure; Obtain the local wireless access gateway information of Access Network from said access network node, and said wireless access gateway information and said access network node are identified and incidence relation is kept in self context; Accordingly, select module 1001 to identify with said access network node and incidence relation is selected according to the information of the said wireless access gateway of preserving in the said core net node equipment self context.

Second acquisition module 1004 is used for obtaining the local wireless access gateway information of Access Network from the initial user message that said access network node sends; Accordingly, select module 1001 to select according to the local wireless access gateway information of said Access Network that said second acquisition module gets access to.

The 3rd acquisition module 1005; Be used for judging that according to said indication information needs are said access device when selecting the local wireless access gateway of wireless access network, according to the sign nslookup resolution system of said access network node to obtain the local wireless access gateway information of Access Network at this access network node place; Accordingly, select module 1001 to select according to the local wireless access gateway information of Access Network that said the 3rd acquisition module gets access to.

Above-mentioned core net node equipment also can comprise: receiver module 1006, be used to receive the failure of establishing initial context response that said access network node returns, and wherein carry failure cause information; Wherein, Said access network node is judging that having indicated said core net node is that said access device is selected under the situation of the local wireless access gateway of Access Network; When the selected wireless access gateway of said core net node is not the wireless access gateway of Access Network this locality, return said failure of establishing initial context response.

In sum, the embodiment of the invention has reduced under the different scenes, the processing complexity of MME on P-GW and S-GW selection problem.MME need not distinguish concrete scene, and only need judge and select local P-GW of wireless access network and the necessity of S-GW according to the indication information of wireless access network, so the embodiment of the invention has good versatility to solving follow-up similar problem.

It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.

Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product; This computer software product is stored in the storage medium, comprise some instructions with so that a station terminal equipment (can be mobile phone, personal computer; Server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be looked protection scope of the present invention.

Claims

1. the method for access device selection wireless access gateway is characterized in that, comprising:

2. the method for claim 1 is characterized in that, carries the indication information that is used to indicate whether to select for access device the local wireless access gateway of Access Network in the said initial user message.

3. method as claimed in claim 2; It is characterized in that; Said indication information comprises the sign that is used to indicate whether to select for access device Access Network local service gateway, or/and, be used to indicate whether sign for the local packet data gateway of access device selection Access Network;

Perhaps, said indication information is included as Access Network local service gateway address or the sign that access device is selected, or/and, be local packet data gateway address of the Access Network of access device selection or sign.

4. the method for claim 1 is characterized in that, carries out handled according to judged result, comprising:

The pairing gateway of wireless access gateway information that receives when judgement is positioned at Access Network when local, for said access device is set up initial context;

The pairing gateway of wireless access gateway information that receives when judgement is not positioned at Access Network when local, refuses to set up initial context for said access device.

5. method as claimed in claim 4 is characterized in that, this method also comprises:

If said access network node refusal is set up initial context for said access device, then return the failure of establishing initial context response to said core net node, wherein carry failure cause.

6. the method for claim 1 is characterized in that, this method also comprises:

Said access network node is in access procedure, and the information of the wireless access gateway that Access Network is local sends to core net node, is that access device is selected wireless access gateway for core net node;

Perhaps, said access network node sends to core net node through the initial user message wireless access gateway information that Access Network is local, is that access device is selected wireless access gateway for core net node.

7. like each described method of claim 1 to 6; It is characterized in that said access device is a via node, said access network node is the base station; Said core net node is a Mobility Management Entity, and said wireless access gateway comprises gateway or/and packet data gateway.

8. an access network node equipment is characterized in that, comprising:

9. access network node equipment as claimed in claim 8 is characterized in that said indicating module specifically is used for, and will be used to indicate whether that selecting the indication information of the local wireless access gateway of Access Network for access device is carried on initial user message.

10. access network node equipment as claimed in claim 9; It is characterized in that; Said indicating module specifically is used for; To be used to indicate whether to select the sign of Access Network local service gateway for access device, or/and, be used to indicate whether that selecting the sign of the local packet data gateway of Access Network for access device is carried on initial user message; Perhaps, Access Network local service gateway address or the sign that will select for access device are or/and the address or the sign of the local packet data gateway of selecting for access device of Access Network are carried on initial user message.

11. access network node equipment as claimed in claim 8; It is characterized in that; Said context is set up processing module and specifically is used for, and the pairing gateway of wireless access gateway information that receives when judgement is positioned at Access Network when local, for said access device is set up initial context; Perhaps, the pairing gateway of wireless access gateway information that receives when judgement is not positioned at Access Network when local, refuses to set up initial context for said access device.

12. access network node equipment as claimed in claim 11; It is characterized in that said context is set up processing module and also is used for, if refusal is set up initial context for said access device; Then return the failure of establishing initial context response, wherein carry failure cause to said core net node.

13. access network node equipment as claimed in claim 8; It is characterized in that; Said indicating module also is used for, and wireless access gateway information Access Network is local through initial user message sends to core net node, is that access device is selected wireless access gateway for core net node.

14. access network node equipment as claimed in claim 8 is characterized in that, this equipment also comprises:

Insert processing module, be used at said access network node at access procedure, the wireless access gateway information that Access Network is local sends to core net node, is that access device is selected wireless access gateway for core net node.

15., it is characterized in that said access network node equipment is base station equipment like each described access network node equipment of claim 8 to 14.

16. the method for access device selection wireless access gateway is characterized in that, comprising:

17. method as claimed in claim 16; It is characterized in that; This method also comprises: said core net node is in said access network node access procedure; Obtain the local wireless access gateway information of Access Network from said access network node, and said wireless access gateway information and said access network node are identified and incidence relation is kept in self context;

Said core net node is a said access device when selecting wireless access gateway, identifies with said access network node and incidence relation is selected according to the information of the said wireless access gateway of preserving in himself context.

18. method as claimed in claim 16 is characterized in that, this method also comprises: said core net node obtains the local wireless access gateway information of Access Network from the initial user message that said access network node sends;

Said core net node is a said access device when selecting wireless access gateway, selects according to the local wireless access gateway information of said Access Network that gets access to.

19. method as claimed in claim 16; It is characterized in that; This method also comprises: said core net node judges that according to said indication information needs are said access device when selecting the local wireless access gateway of wireless access network, according to the sign nslookup resolution system of said access network node to obtain the local wireless access gateway information of Access Network at this access network node place;

Said core net node is a said access device when selecting wireless access gateway, selects according to the wireless access gateway information that the Access Network that inquires is local.

20., it is characterized in that this method also comprises like each described method of claim 16 to 19:

Said core net node receives the failure of establishing initial context response that said access network node returns, and wherein carries failure cause information; Wherein, Said access network node is judging that having indicated said core net node is that said access device is selected under the situation of the local wireless access gateway of Access Network; When the selected wireless access gateway of said core net node is not the wireless access gateway of Access Network this locality, return said failure of establishing initial context response.

21. like each described method of claim 16 to 19; It is characterized in that said access device is a via node, said access network node is the base station; Said core net node is a Mobility Management Entity, and said wireless access gateway comprises gateway or/and packet data gateway.

22. a core net node equipment is characterized in that, comprising:

23. core net node equipment as claimed in claim 22 is characterized in that, this equipment also comprises:

First acquisition module; Be used at said access network node access procedure; Obtain the local wireless access gateway information of Access Network from said access network node, and said wireless access gateway information and said access network node are identified and incidence relation is kept in self context;

Said selection module specifically is used for, and selects according to the information of the said wireless access gateway of preserving in the said core net node equipment self context and said access network node sign and incidence relation thereof.

24. core net node equipment as claimed in claim 22 is characterized in that, this equipment also comprises:

Second acquisition module is used for obtaining the local wireless access gateway information of Access Network from the initial user message that said access network node sends;

Said selection module specifically is used for, and selects according to the local wireless access gateway information of said Access Network that said second acquisition module gets access to.

25. core net node equipment as claimed in claim 22 is characterized in that, this equipment also comprises:

The 3rd acquisition module; Be used for judging that according to said indication information needs are said access device when selecting the local wireless access gateway of wireless access network, according to the sign nslookup resolution system of said access network node to obtain the local wireless access gateway information of Access Network at this access network node place;

Said selection module specifically is used for, and selects according to the local wireless access gateway information of Access Network that said the 3rd acquisition module gets access to.

26., it is characterized in that this equipment also comprises like each described core net node equipment of claim 22 to 25:

Receiver module is used to receive the failure of establishing initial context response that said access network node returns, and wherein carries failure cause information; Wherein, Said access network node is judging that having indicated said core net node is that said access device is selected under the situation of the local wireless access gateway of Access Network; When the selected wireless access gateway of said core net node is not the wireless access gateway of Access Network this locality, return said failure of establishing initial context response.

27., it is characterized in that said core net node is a Mobility Management Entity like each described core net node equipment of claim 22 to 25.