CN102469560B

CN102469560B - Method of selecting wireless access gateway for access equipment and equipment thereof

Info

Publication number: CN102469560B
Application number: CN201010536563.4A
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: 2014-07-16
Anticipated expiration: 2030-11-04
Also published as: CN102469560A; 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

For method and the equipment thereof of access device selection wireless access gateway

Technical field

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

Background technology

In following mobile communication system, for example, after three generations (Beyond Third Generation, B3G) in system or LTE-A (Long Term Evolution-Advanced) system, to provide higher peak data rate and cell throughout, also need larger bandwidth simultaneously.Unassigned bandwidth below 2GHz is little at present, and the part or all of bandwidth that B3G system needs can only be in higher frequency range, and for example 3GHz finds above.Frequency range is higher, and it is faster that radio wave propagation is decayed, and transmission range is shorter, therefore, under same overlay area, ensure continuous covering, needs more base station, and because base station has higher cost conventionally, 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 cellular system, to increase covering.

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

RN in this framework has dual identity.First, RN has the identity of UE (User Equipment, subscriber equipment), and RN is similar to the start attaching process of UE while startup.RN has the S-GW/P-GW (Serving Gateway/PDN Gateway, gateway/packet data gateway) of oneself and controls node M ME (Mobility Management Entity, Mobility Management Entity).Secondly, for the UE of access RN, RN has the identity of eNB, and now the downlink data of UE need to send to from the S-GW/P-GW of UE the serving BS of UE, i.e. RN, and then RN issues UE on Uu mouth.

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

Then, node configuration information is downloaded to RN by OAM (Operation and Maintenance, operation and maintenance system), and RN is configured.RN sets up after necessary S1 interface and X2 interface again, just can be as base station normal work.

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

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

In prior art, P-GW selection and S-GW for common UE select to control and realize based on MME, be that the type of service that MME asks according to UE is that UE selects P-GW, MME is that UE selects S-GW (may have multiple S-GW can be certain TA district UE service) according to TA district, the current place of UE.Be linked into as UE at RN in the process of network, Phase I and Phase II select P-GW and the selection of S-GW requires completely different.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 that in prior art, MME controls completely; And in Phase II, require to be positioned at wireless access network this locality for P-GW and S-GW that RN selects, otherwise will cause RN normally to work.

Inventor realizing in process of the present invention, finds that prior art at least exists following defect:

Such as, due in prior art and do not require that P-GW that MME selects and S-GW must be that (MME may be according to the factor such as strategy or load balancing of operator or some characteristic for specific and unique P-GW and S-GW, for the suitable P-GW of UE Dynamic Selection and S-GW), and for RN under the scene of Phase II access network, not yet have at present solution.

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, select wireless access network local wireless IAD to realize by line access node control as access device, for this reason, the present invention adopts following technical scheme:

For a method for access device selection wireless access gateway, comprising:

In access device access procedure, access network node is by initial user message, and whether instruction core net node is the wireless access gateway that described access device is selected Access Network this locality;

Be that described access device is selected the wireless access gateway of Access Network this locality at described access network node instruction core net node, when described access network node is in the time that the initial context that receives described core net node transmission is set 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 respective handling according to judged result.

A kind of access network node equipment, comprising:

Whether indicating module, at access device access procedure, is the wireless access gateway that described access device is selected Access Network this locality by initial user message instruction core net node;

Judge module, be that described access device is selected the wireless access gateway of Access Network this locality for indicate core net node at described access network node, when described access network node is in the time that the initial context that receives described core net node transmission is set 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, for carrying out respective handling according to the judged result of described judge module.

For a method for access device selection wireless access gateway, comprising:

In access device access procedure, whether being used to indicate of carrying in the initial user message that core net node sends according to access network node is the indication information that described access device is selected the wireless access gateway of Access Network this locality, for described access device is selected wireless access gateway;

Described core net node is set up request message by initial context, and the information of the wireless access gateway of selecting is sent to described access network node.

A kind of core net node equipment, comprising:

Select module, be used at access device access procedure, whether being used to indicate of carrying in the initial user message sending according to access network node is the indication information that described access device is selected the wireless access gateway of Access Network this locality, for described access device is selected wireless access gateway;

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

The above embodiment of the present invention, by in access device access procedure, whether be the wireless access gateway that described access device is selected Access Network this locality by access network node instruction core net node, and in the time setting up context for access device, further judge that whether core net is as requested for access device is selected wireless access gateway, and carry out context according to judged result and set up operation, be that access device is selected wireless access network local wireless IAD thereby realized by line access node control.

Brief description of the drawings

Fig. 1 is the E-UTRAN network architecture schematic diagram that comprises RN in prior art;

Fig. 2 is RN start-up course schematic diagram in prior art;

Fig. 3 is that in prior art, S1 connects process of establishing schematic diagram;

Fig. 4 is eNB config update process schematic diagram in prior art;

The overall procedure schematic diagram for RN selection wireless access gateway that Fig. 5 provides for the embodiment of the present invention;

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

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

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

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

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

Embodiment

The problem existing for above-mentioned prior art, the embodiment of the present invention provides a kind of mechanism of for example, being controlled and confirm as P-GW that RN chooses and S-GW and be positioned at wireless access network this locality by wireless access network node self (DeNB).In embodiments of the present invention, MME for example, according to the indication information of wireless access network equipment (DeNB), determine whether current access device (for example RN) the selection S-GW of wireless access network this locality or the P-GW of wireless access network this locality, and carry out respective handling according to judged result.

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

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

Step 501, wireless access network node (for example DeNB) reports to core net node (for example MME) by being positioned at the S-GW of wireless access network this locality or the address information of P-GW, set up the S11 interface between above-mentioned local S-GW for core net node, or S5 interface between S-GW and local P-GW.

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

Step 503, for example, in core net node (MME) is for example initiated, to the user's context process of establishing of radio reception device (RN), whether wireless access network node (for example DeNB) need to be judged step 502 and meet, only under the satisfied condition of step 502, could confirm the initial context of radio reception device (for example RN) to be successfully established, otherwise refuse above-mentioned initial context and set up request, and can further in refuse information, indicate reason.

It should be noted that there is no strict sequencing between each step of above-mentioned flow process, and can omit for some step in some embodiment.

Below taking wireless access network node as DeNB, core net node is example as MME, radio reception device as the network architecture of RN, and in conjunction with Fig. 6, Fig. 7 and Fig. 8, the embodiment of the present invention is explained in further detail.

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

The startup stage of stage 1:DeNB

DeNB sets up S1 with MME after starting and is connected, and connect in process of establishing at S1, by local wireless access network S-GW or/and the address of P-GW (can be also mark wait can unique identification gateway information) send to MME, MME by S-GW or/and the address of P-GW and corresponding DeNB mark and incidence relation be kept in self context.

Wherein, set up in 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 table 1, S-GW and P-GW can adopt independently IE (as the Local P-GW address in table 1 and Local S-GW address), also can adopt same IE, such as S-GW and P-GW integrate, while having identical IP address.

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

Step 601, after RN starting up, sets up RRC with DeNB and is connected, and carries indication information (for example RN identity instruction) to DeNB in reciprocal process.

Step 602, DeNB, according to the indication information receiving and self type context, 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.

Step 603, DeNB is according to judged result, for example, by two information indicating bits in initial user message (Initial UE message) (Local P-GW selection indication and Local S-GWselection indication), indicate respectively MME whether to be necessary for RN 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 as shown in table 2a.

Table 2a

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

Table 2b

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

Table 2c

Step 604, MME judges whether to be necessary for RN according to the indication information carrying in the Initial UE message receiving and selects the S-GW of wireless access network this locality or/and the P-GW of wireless access network this locality if the judgment is Yes, performs step 605a; Otherwise, execution step 605b, that is, MME can carry out S-GW or/and P-GW selects according to prior art.

Step 605a, need to be that RN selects the S-GW of wireless access network this locality if MME judges, and is that RN selects S-GW or/and P-GW according to this judged result, and to the S-GW initiation session process of establishing in wireless access network.Further, the P-GW address of selection is sent to S-GW by MME, and S-GW initiates chain of command according to the address of P-GW to target P-GW and connects.Wherein, the contextual information that MME preserves the startup stage of can be according to DeNB obtains with the S-GW address of current DeNB ID binding or/and P-GW address, and selects S-GW or/and P-GW as RN.

It should be noted that, the S-GW in figure, P-GW refers to the S-GW and the P-GW that are positioned at core net.Although be that the mode being integrated on DeNB according to S-GW function and P-GW function is drawn in the drawings, the S-GW function of wireless access network this locality and P-GW function, both can be integrated in DeNB upper, can be also the specific installation that is positioned at wireless access network.

Step 605b, does not need for RN selects the S-GW of wireless access network this locality if MME judges, and can be that RN selects a S-GW who is positioned at core net according to prior art, and to the S-GW initiation session process of establishing in this core net.Further, the P-GW address of selecting is sent to S-GW by MME, 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 by initial context, triggering DeNB is that RN sets up context, and in message, carries the P-GW selecting for RN or/and the indication information (this indication information can be mark or the address information of P-GW or S-GW) of 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 sets up according to the initial context that receives the P-GW for RN selection that carries in request message or/and the indication information of S-GW, judges whether indicated consistent with in step 603.

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

Step 608a, if be judged as "True" in step 607, DeNB is that RN sets up initial context, and sends initial context response message to MME.

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

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

Table 4

Wherein, Local P-GW address and Local S-GW address cell are respectively used to carry P-GW address and S-GW address.

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

Step 701, after RN starting up, sets up RRC with base station and is connected, and carries indication information (for example RN identity instruction) to DeNB in reciprocal process.

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

Step 703, DeNB is according to judged result, for example, by two information indicating bits in initial user message (Initial UE message) (Local P-GW selection indication and Local S-GWselection indication), indicate respectively MME whether to be necessary for RN and select the local S-GW of Access Network and P-GW.Select the local S-GW of Access Network or/and when P-GW at needs for RN, DeNB respectively by the S-GW of wireless access network this locality or/and 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, Local P-GW selection indication and Local S-GW selection indication cell be respectively used to be designated as RN select the local S-GW of Access Network and P-GW whether necessary, Local P-GWaddress and Local S-GW address cell are respectively used to carry S-GW address and P-GW address.

In this step, DeNB is in the time that judgement need to be forced to the local P-GW of RN selection wireless access network and/or S-GW, also can only the P-GW of wireless access network this locality and/or S-GW address information be sent to MME, select indication information (as 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 carrying in the Initial UE message receiving and selects the S-GW of wireless access network this locality or the P-GW of wireless access network this locality, if the judgment is Yes, performs step 705a; Otherwise, execution step 705b, that is, MME can carry out S-GW and P-GW selection according to prior art.

In this step, if MME has only received P-GW and/or the S-GW address information of wireless access network this locality, can think need to be P-GW and/or the S-GW of RN selection local access network.

Step 705a, if MME judges the S-GW that need to select for RN wireless access network this locality, be that RN selects S-GW or/and P-GW according to this judged result, and to S-GW (supposing that the local S-GW of DeNB and Access Network is positioned on Same Physical entity here) the initiation session process of establishing in wireless access network.Further, the P-GW address of selection is sent to S-GW by MME, 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 P-GW address is RN according to the S-GW obtaining in step 703.

Step 705b, if MME judges the S-GW that does not need to select for RN wireless access network this locality, can be that one of RN selection is positioned at the S-GW of core net the S-GW initiation session process of establishing to this core net according to prior art.Further, the P-GW address of selection is sent to S-GW by MME, 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 by initial context, triggering DeNB is that RN sets up context, and in message, carries the P-GW selecting for RN or/and the indication information (this indication information can be mark or the address information of P-GW or S-GW) of 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 used to be designated as P-GW or the S-GW that RN selects.

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

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

Step 708a, if be judged as "True" in step 707, DeNB is that RN sets up initial context, and sends initial context response message to MME.

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

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

Step 801, after RN starting up, sets up RRC with DeNB and is connected, and carries indication information (for example RN identity instruction) to DeNB in reciprocal process.

Step 802, DeNB, according to the indication information receiving and self type context, 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.

Step 803, DeNB is according to judged result, for example, by two information indicating bits in initial user message (Initial UE message) (Local P-GW selection indication and Local S-GWselection indication), indicate respectively MME whether to be necessary for RN 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 RN according to the indication information carrying in the Initial UE message receiving and selects the S-GW of wireless access network this locality or/and the P-GW of wireless access network this locality if the judgment is Yes, performs step 805a; Otherwise, execution step 805b, that is, MME can carry out S-GW and P-GW selection according to prior art.

Step 805a, if MME judges the S-GW that need to select for RN wireless access network this locality, the S-GW that obtains Access Network this locality according to this judged result by DNS inquiry mode is or/and P-GW address, and to S-GW (supposing that the local S-GW of DeNB and Access Network is positioned on Same Physical entity here) the initiation session process of establishing in wireless access network.Further, the P-GW address of selection is sent to S-GW by MME, 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 to select the S-GW of wireless access network this locality or/and P-GW for RN, MME sends to DNS using DeNB ID as index, and DNS system is according to the type of DeNB ID and inquiry gateway, inquires about and gateway address information that inquiry is obtained sends to MME.

Step 805b, if MME judges the S-GW that does not need to select for RN wireless access network this locality, is that one of RN selection is positioned at the S-GW of core net the S-GW initiation session process of establishing to this core net according to prior art.Further, the P-GW address of selection is sent to S-GW by MME, 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 by initial context, triggering DeNB is that RN sets up context, and in message item, carries the P-GW selecting for RN or/and the indication information (this indication information can be mark or the address information of P-GW or S-GW) of 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 used to carry P-GW mark and S-GW mark.

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

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

Step 808a, if be judged as "True" in step 807, DeNB is that RN sets up initial context, and sends initial context response message to MME.

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

Based on identical technical conceive, the embodiment of the present 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 providing for the embodiment of the present invention, this network equipment can be base station equipment.As shown in the figure, this access network node equipment can comprise:

Whether indicating module 901, at access device access procedure, is the wireless access gateway that described access device is selected Access Network this locality by initial user message instruction core net node;

Judge module 902, be that described access device is selected the wireless access gateway of Access Network this locality for indicate core net node at described access network node, when described access network node is in the time that the initial context that receives described core net node transmission is set 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, for carrying out respective handling according to the judged result of judge module 902.

In above-mentioned access network node equipment, whether indicating module 901 can be that access device selects the indication information of the wireless access gateway of Access Network this locality to be carried on initial user message by being used to indicate.

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

In above-mentioned access network node equipment, processing module 903 set up in context can be specifically for: the corresponding gateway of wireless access gateway information receiving when judgement is positioned at Access Network when local, for described access device is set up initial context; Or the corresponding gateway of wireless access gateway information receiving when judgement is not positioned at Access Network when local, refuses to set up initial context for described access device.

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

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

Above-mentioned access network node equipment also can comprise: access processing module 904, be used at described access network node at access procedure, the wireless access gateway information of Access Network this locality is sent 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 providing for the embodiment of the present 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 access device access procedure, whether being used to indicate of carrying in the initial user message sending according to access network node is the indication information that described access device is selected the wireless access gateway of Access Network this locality, for described access device is selected wireless access gateway;

Sending module 1002, for setting up request message by initial context, sends to described access network node by the information of the wireless access gateway of selecting module 1001 to select.

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

The first acquisition module 1003, be used at described access network node access procedure, obtain the wireless access gateway information of Access Network this locality from described access network node, and described wireless access gateway information and described access network node mark and incidence relation thereof are kept in self context; Accordingly, selection module 1001 can according to the information of the described wireless access gateway of preserving in described core net node equipment self context and described access network node identifies and incidence relation is selected.

The second acquisition module 1004, obtains the wireless access gateway information of Access Network this locality for the initial user message sending from described access network node; The wireless access gateway information of described Access Network this locality that accordingly, selection module 1001 can get according to described the second acquisition module is selected.

The 3rd acquisition module 1005, need to be for the wireless access gateway of described access device selection wireless access network this locality for judge according to described indication information time, according to the mark nslookup resolution system of described access network node to obtain the wireless access gateway information of Access Network this locality at this access network node place; The wireless access gateway information of Access Network this locality that accordingly, selection module 1001 can get according to described the 3rd acquisition module is selected.

Above-mentioned core net node equipment also can comprise: receiver module 1006, and the failure of establishing initial context response of returning for receiving described access network node, wherein carries failure cause information; Wherein, described access network node is in the case of judging that indicating described core net node is that described access device is selected the wireless access gateway of Access Network this locality, when the selected wireless access gateway of described core net node is not the wireless access gateway of Access Network this locality, return to described failure of establishing initial context response.

In sum, the embodiment of the present invention has reduced under different scenes, the processing complexity of MME in P-GW and S-GW selection problem.MME does not need to distinguish concrete scene, and only need to be according to the indication information of wireless access network, and the P-GW of wireless access network this locality and the necessity of S-GW are selected in judgement, and therefore the embodiment of the present 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 in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into multiple submodules.

Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be mobile phones in order to make a station terminal equipment, personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.

Claims

1. the method for access device selection wireless access gateway, it is characterized in that, comprise: in access device access procedure, access network node is by initial user message, and whether instruction core net node is the wireless access gateway that described access device is selected Access Network this locality;

Be that described access device is selected the wireless access gateway of Access Network this locality at described access network node instruction core net node, when described access network node is in the time that the initial context that receives described core net node transmission is set 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 respective handling according to judged result;

Wherein, in described access device access procedure, the information of the wireless access gateway of Access Network this locality is sent to core net node by described access network node, is that access device is selected wireless access gateway for core net node;

Or described access network node sends to core net node by initial user message by the wireless access gateway information of Access Network this locality, be that access device is selected wireless access gateway for core net node.

2. the method for claim 1, is characterized in that, carries whether be used to indicate be the indication information that access device is selected the wireless access gateway of Access Network this locality in described initial user message.

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

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

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

The corresponding gateway of wireless access gateway information receiving when judgement is positioned at Access Network when local, for described access device is set up initial context;

The corresponding gateway of wireless access gateway information receiving when judgement is not positioned at Access Network when local, refuses to set up initial context for described access device.

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

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

6. the method as described in claim 1 to 5 any one, it is characterized in that, described access device is via node, and described access network node is base station, described core net node is Mobility Management Entity, and described wireless access gateway comprises gateway or/and packet data gateway.

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

Processing module set up in context, for carrying out respective handling according to the judged result of described judge module;

Wherein, described indicating module also for, in described access device access procedure, by initial user message, the wireless access gateway information of Access Network this locality is sent to core net node, for core net node be access device select wireless access gateway;

Or, access processing module, the wireless access gateway information of Access Network this locality is sent to core net node by described access network node, is that access device is selected wireless access gateway for core net node.

8. access network node equipment as claimed in claim 7, is characterized in that, described indicating module specifically for, whether by being used to indicate, to be access device select the indication information of the wireless access gateway of Access Network this locality to be carried on initial user message.

9. access network node equipment as claimed in claim 8, it is characterized in that, described indicating module specifically for, whether be the sign that access device is selected Access Network local service gateway by being used to indicate, or/and whether be used to indicate is that access device selects the sign of the local packet data gateway of Access Network to be carried on initial user message; Or, by Access Network local service gateway address or the mark selected for access device, or/and address or the mark of the local packet data gateway of Access Network of selecting for access device are carried on initial user message.

10. access network node equipment as claimed in claim 7, it is characterized in that, described context is set up processing module and is positioned at Access Network when local specifically for, the corresponding gateway of wireless access gateway information receiving when judgement, for described access device is set up initial context; Or the corresponding gateway of wireless access gateway information receiving when judgement is not positioned at Access Network when local, refuses to set up initial context for described access device.

11. access network node equipment as claimed in claim 10, it is characterized in that, described context set up processing module also for, if refusal set up initial context for described access device, return to failure of establishing initial context response to described core net node, wherein carry failure cause.

12. access network node equipment as described in claim 7 to 11 any one, is characterized in that, described access network node equipment is base station equipment.

13. 1 kinds of methods for access device selection wireless access gateway, is characterized in that, comprising:

Described core net node is set up request message by initial context, and the information of the wireless access gateway of selecting is sent to described access network node;

Described core net node is in described access device access procedure, obtain the wireless access gateway information of Access Network this locality from described access network node, and described wireless access gateway information and described access network node mark and incidence relation thereof are kept in self context;

Described core net node is described access device while selecting wireless access gateway, identifies and incidence relation is selected according to the information of the described wireless access gateway of preserving in himself context with described access network node;

Or, the initial user message that described core net node sends from described access network node, obtain the wireless access gateway information of Access Network this locality;

When described core net node is described access device selection wireless access gateway, select according to the wireless access gateway information of the described Access Network this locality getting.

14. methods as claimed in claim 13, it is characterized in that, the method also comprises: described core net node judges need to select the wireless access gateway of wireless access network this locality for described access device time according to described indication information, according to the mark nslookup resolution system of described access network node to obtain the wireless access gateway information of Access Network this locality at this access network node place;

When described core net node is described access device selection wireless access gateway, select according to the wireless access gateway information of the Access Network this locality inquiring.

15. methods as described in claim 13 to 14 any one, is characterized in that, the method also comprises:

Described core net node receives the failure of establishing initial context response that described access network node returns, and wherein carries failure cause information; Wherein, described access network node is in the case of judging that indicating described core net node is that described access device is selected the wireless access gateway of Access Network this locality, when the selected wireless access gateway of described core net node is not the wireless access gateway of Access Network this locality, return to described failure of establishing initial context response.

16. methods as described in claim 13 to 14 any one, it is characterized in that, described access device is via node, and described access network node is base station, described core net node is Mobility Management Entity, and described wireless access gateway comprises gateway or/and packet data gateway.

17. 1 kinds of core net node equipment, is characterized in that, comprising:

Sending module, for setting up request message by initial context, the information of the wireless access gateway that described selection module is selected sends to described access network node;

The first acquisition module, be used at described access device access procedure, obtain the wireless access gateway information of Access Network this locality from described access network node, and described wireless access gateway information and described access network node mark and incidence relation thereof are kept in self context;

Described selection module specifically for, select according to the information of the described wireless access gateway of preserving in described core net node equipment self context and described access network node mark and incidence relation thereof;

Or the second acquisition module, obtains the wireless access gateway information of Access Network this locality for the initial user message sending from described access network node;

Described selection module specifically for, the wireless access gateway information of the described Access Network this locality getting according to described the second acquisition module is selected.

18. core net node equipment as claimed in claim 17, is characterized in that, this equipment also comprises:

The 3rd acquisition module, need to be for the wireless access gateway of described access device selection wireless access network this locality for judge according to described indication information time, according to the mark nslookup resolution system of described access network node to obtain the wireless access gateway information of Access Network this locality at this access network node place;

Described selection module specifically for, the wireless access gateway information of the Access Network this locality getting according to described the 3rd acquisition module is selected.

19. core net node equipment as described in claim 17 to 18 any one, is characterized in that, this equipment also comprises:

Receiver module, the failure of establishing initial context response of returning for receiving described access network node, wherein carries failure cause information; Wherein, described access network node is in the case of judging that indicating described core net node is that described access device is selected the wireless access gateway of Access Network this locality, when the selected wireless access gateway of described core net node is not the wireless access gateway of Access Network this locality, return to described failure of establishing initial context response.

20. core net node equipment as described in claim 17 to 18 any one, is characterized in that, described core net node is Mobility Management Entity.