CN103428760A - Method for supporting correct establishment of local IP access (LIPA) service - Google Patents

Abstract

The invention provides a method for supporting correct establishment of a local IP access (LIPA) service. User equipment (UE) first obtains a public land mobile network (PLMN) supporting the LIPA service and makes a request to establish the LIPA service in the PLMN supporting the LIPA service according to the PLMN supporting the LIPA service. The invention further provides two other methods for supporting correct establishment of the LIPA service, and the two methods are suitable for a network side device. The LIPA service can be established for the UE correctly by applying the method, the service requirements of a user are met to the greatest extent, and optimal network resource distribution is achieved.

Description

A kind of method of supporting correctly to set up the LIPA business

Technical field

The present invention relates to wireless communication technology, particularly a kind of method of supporting correctly to set up the LIPA business.

Background technology

In existing 3GPP system, whether network side determines is UE is activated local IP access (LIPA, LocalIPAccess) business and depends on following several factor:

1) CAMEL-Subscription-Information of current UE indicates the whether accessible LIPA business of UE;

2) the current selected closo of UE community (CSG cell, Closed Subscribe Group cell) or mixed type community (hybrid cell) the base station equipment gateway of LIPA business that whether can provide support.

In the situation that shared network ，Yi Ge community can corresponding a plurality of public land mobile networks (PLMN, Public Land Mobile Network), UE is carrying out when community is selected reading a plurality of PLMN ID in broadcast message.The UE of Idle state can select suitable PLMN.If UE is the UE that supports the CSG characteristic,, when UE moves to CSG cell or Hybrid cell, UE can preferentially guarantee that it be CSG member, if in the list that current community is accessed in the UE permission time.

But in the selection course of existing community, the business information of UE request after can not considering, thus after the service request process in, may occur that service request is unsuccessfully, network indication UE reselects PLMN, makes UE can't enjoy the business experience that quality services are become reconciled.

When the UE of activated state does switching, especially target BS is supported in the situation of RAN sharing characteristic, the PLMN gravity treatment may appear, for example, target BS is not supported the PLMN of UE registration, network or UE may reselect PLMN, guarantee that UE remains the user of target BS as far as possible, guarantee handover success.But in this process, only paying the utmost attention to UE is the user of purpose base station, does not consider the corresponding PLMN of LIPA business of the current access of UE, so may cause LIPA business handoff failure.

Summary of the invention

The invention provides a kind of method of supporting correctly to set up the LIPA business, take correctly as UE and set up the LIPA business.

A kind of method of supporting correctly to set up local Internet Protocol access (LIPA) business provided by the invention comprises:

Subscriber equipment (UE) obtains the public land mobile network (PLMN) of supporting the LIPA business;

UE is according to the PLMN of described support LIPA business, and in the PLMN that supports the LIPA business, the LIPA business is set up in request.

Preferably, before the LIPA business is set up in request, the method may further include:

UE judges according to obtained information whether the PLMN of current selection supports the LIPA business, if do not support, do not initiate the LIPA service request, or carry out the PLMN gravity treatment, PLMN by the UE gravity treatment to support LIPA business, and the LIPA business is set up in request in the PLMN that supports the LIPA business.

Preferably, after getting the PLMN that supports the LIPA business, and, before the LIPA business is set up in request, the method can comprise:

When selecting PLMN, UE preferentially selects to support the PLMN of LIPA business according to the PLMN of described support LIPA business.

Preferably, UE can obtain system broadcast information when moving to closo community (CSG cell) or overlay area, mixed type community (hybrid cell), obtains the PLMN that supports the LIPA business from described system broadcast information.

Preferably, UE can obtain CSG list or the CSG of the operator list that UE allows access by open mobile alliance device management (OMA-DM), and obtains the PLMN that supports the LIPA business from described CSG list.

Preferably, UE can reply message and obtain the PLMN that supports the LIPA business from the Non-Access Stratum (NAS) of Mobility Management Entity (MME).

Preferably, in switching, UE can obtain the PLMN that supports the LIPA business from the system broadcast information of purpose base station, and carries the PLMN list in sending to the measurement report of source base station, and the PLMN in described PLMN list all supports the LIPA business.

The another kind of method of supporting correctly to set up local Internet Protocol access (LIPA) business provided by the invention, the handoff procedure at subscriber equipment (UE) comprises:

Source base station obtains the public land mobile network (PLMN) of supporting the LIPA business;

Source base station is according to the registration PLMN(rPLMN of UE), equivalent PLMN(ePLMN) and the PLMN that supports the LIPA business, select a PLMN who supports LIPA as the PLMN that in the purpose community is the UE service.

Preferably, when UE initially accesses, source base station can obtain the PLMN that supports the LIPA business from Mobility Management Entity (MME);

Perhaps, can whether support the LIPA business by the pre-configured PLMN of knowing.

The present invention also provides a kind of method of supporting correctly to set up local Internet Protocol access (LIPA) business, and at the handoff procedure of subscriber equipment (UE), the method comprises:

Source base station receives measurement report from UE, comprises public land mobile network (PLMN) list of purpose community in described measurement report, and the PLMN in described PLMN list belongs to the registration PLMN(rPLMN of described UE) or equivalent PLMN(ePLMN);

Source base station sends to Mobility Management Entity (MME) by described PLMN list;

MME, according to rPLMN, the ePLMN of UE and the PLMN that supports the LIPA business, selects a PLMN who supports LIPA as the PLMN that in the purpose community is the UE service.

As can be seen from the above technical solutions, in technical scheme provided by the invention, for example, obtain the PLMN that supports the LIPA business by the entity by relevant (: UE, base station or MME), and according to ability information and UE CAMEL-Subscription-Information and the carrier policy of access device, UE is chosen in the PLMN that supports LIPA, thereby guarantee that the LIPA business can be successfully established, met substantially the user side business demand, guaranteed user's business experience and network resource optimization.

The accompanying drawing explanation

Fig. 1 is the schematic flow sheet that the present invention supports correctly to set up the method one of LIPA business;

Fig. 2 is the schematic flow sheet that the present invention supports correctly to set up the method two of LIPA business;

The process schematic diagram that Fig. 3 is the embodiment of the present invention one UE request LIPA business;

The process schematic diagram that Fig. 4 is the embodiment of the present invention three UE request LIPA business;

Fig. 5 is the NAS signalling interactive process schematic diagram in the embodiment of the present invention five

The switching flow schematic diagram that Fig. 6 is UE in the embodiment of the present invention six;

The switching flow schematic diagram that Fig. 7 is UE in the embodiment of the present invention eight;

The switching flow schematic diagram that Fig. 8 is UE in the embodiment of the present invention nine.

Embodiment

For making purpose of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.

The present invention mainly passes through by relevant entity, such as: UE, base station or MME etc. obtain the relevant information of PLMN of supporting the LIPA business, and UE is chosen in the PLMN that supports the LIPA business according to this information, guarantee that UE initiates the LIPA business and sets up request in the PLMN that supports the LIPA business, thereby guarantee that UE can correctly set up the LIPA business.

Fig. 1 is the schematic flow sheet that the present invention supports correctly to set up the method one of LIPA business, and the method comprises the following steps:

101:UE obtains the PLMN that supports the LIPA business.

102: before request access LIPA business, UE judges according to described information whether current selection PLMN supports the LIPA business, if do not support, do not initiate the LIPA service request or do the PLMN gravity treatment, by the UE gravity treatment to the PLMN that can access LIPA.

Fig. 2 is the schematic flow sheet that the present invention supports correctly to set up the method two of LIPA business, and the method comprises the following steps:

201:UE obtains the PLMN that supports the LIPA business;

202: when selecting PLMN, UE selects to support the PLMN of LIPA business according to described information priority, guarantees that UE can preferentially choose the PLMN that supports the LIPA business.

In step 201, can be according to operator pre-configured, support the priority of the PLMN of LIPA business to be set to height, like this, while being selected, can directly select the PLMN that priority is the highest in step 202.

Below by nine preferred embodiments, technical solution of the present invention is further elaborated.

Embodiment mono-:

The present embodiment had been described UE before asking the business that LIPA is relevant, did the process that PLMN and community are selected, and as shown in Figure 3, comprised the following steps:

Step 301:UE is when moving to CSG cell or hybrid cell overlay area, obtain system broadcast information, this broadcast message comprises: whether the PLMN list of current area, CSG ID, ECGI, current area support LIPA business and the PLMN information of supporting the LIPA business.

Here, support that the PLMN of LIPA business can be independent information; Perhaps whether conduct supports the part of LIPA business information; Perhaps, as the part of PLMN list information, for example, in PLMN information, increase extend information, for special, indicate whether current PLMN supports the LIPA business.

In the present embodiment, UE carries out the PLMN selection according to prior art, and the process that PLMN selects after also can occurring in step 301, specifically comprised before both can having occurred in step 301:

The UE end is preserved the CSG list that allows access, and this list comprises PLMN ID and CSG ID, and current community CSG cell or hybrid cell can broadcast current supported all PLMN lists and CSG ID.

If the PLMN(rPLMN that UE had registered), in the CSG list of the permission of UE access, UE preferentially selects rPLMN; Otherwise UE is at equivalent PLMN(EPLMN) in select, while selecting, guarantee the member of UEShi CSG community or mixed cell in EPLMN as far as possible.

Step 302:UE judges whether to initiate the LIPA business, particularly, according to the parameter in the broadcast message of receiving, judges whether current area supports LIPA, and judges whether current selected PLMN supports LIPA.

If above-mentioned condition all meets, UE initiates the business request information that LIPA is relevant and arrives MME.

If the PLMN that current UE is selected does not support LIPA, UE, before initiating the LIPA business, can carry out the PLMN gravity treatment, guarantees that the PLMN that UE selects can support the LIPA business; Perhaps UE can select temporarily not access the LIPA business, and while waiting until next PLMN gravity treatment, the LIPA service request is initiated in gravity treatment during to the PLMN that can access LIPA again.

Based on embodiment mono-, below by a concrete example, describe.

In this example, suppose that the list of CSG of the permission access of UE is { (1,10), (1,20), (2,20) (3,30) }, wherein, the first digit in each round bracket represents PLMN IE, and second digit represents CSG ID; And hypothesis only has PLMN 2 just to allow UE access LIPA business.

According to prior art, the CSG of the community that UE may select is that 20, PLMN is (1,2), and the ePLMN that the current rPLMN registered of UE is 4, UE is (1,2,3), so, according to existing PLMN, selects mechanism, and the PLMN that last UE selects is 1.

In step 302, before UE initiates the LIPA business, find that the PLMN 1 that current UE is selected does not support LIPA, can carry out the PLMN gravity treatment, now, UE is according to the PLMN=2 of the supported LIPA business of broadcast message, and UE selects PLMN 2.

Embodiment bis-:

The technical scheme that embodiment bis-and embodiment mono-are the phase trans-substitution.Referring to Fig. 3, comprise the following steps:

Step 301:UE is when moving to CSG cell or hybrid cell overlay area, and by the PLMN of the supported LIPA business of broadcast message, this step is with embodiment mono-step 301.

For example: the list of the CSG of the permission access of UE is { (1,10), (1,20), (2,20) (3,30) }, the CSG of the community that UE may select is 20, and the PLMN of support is (1,2) ePLMN that, the current rPLMN registered of UE is 4, UE is (1,2,3), due to the rPLMN of UE, not in range of choice, UE can only select in ePLMN.If the active user always can apply for accessing the LIPA business, UE, according to the PLMN of the support LIPA business of receiving, can preferentially select the PLMN of support LIPA business, and last UE has selected PLMN 2.

Perhaps the pre-configured preferential principle of LIPA business according to operator, in the ePLMN that can select at UE or PLMN list, will support that the PLMN of LIPA business is placed as high priority.The ePLMN list of UE in the present example is (2,1,3), and UE finally can select PLMN 2.

Step 302, UE initiating business request, request access LIPA business.

Embodiment tri-:

The process schematic diagram that Fig. 4 is the embodiment of the present invention three UE request LIPA business comprises the following steps:

Step 401:UE is known the PLMN that supports the LIPA business.

In prior art, UE allows the CSG list of access and operator's CSG list to comprise CSG ID and corresponding PLMN information.In the present embodiment, operator's configuration UE allows CSG list or the CSG of the operator list of access, increases the PLMN that supports the LIPA business in this list.Existing CSG list comprises following information: CSG ID, corresponding PLMN ID or a plurality of PLMN ID.

In this step, support the PLMN of LIPA business to manage by OMA-DM, be updated in UE; Perhaps by the pre-configured of UE, be kept on UE or USIM.Thereby UE can be known the PLMN that supports the LIPA business.

Step 402:UE is before selecting PLMN, and whether the PLMN (s), CSG ID, ECGI and the current area that obtain optional community by broadcast message support LIPA.UE is when selecting PLMN, if optional community allows, in the CSG list of access, to guarantee the member of UEWei CSG community or mixed cell at UE as far as possible.Further, UE, according to the PLMN of the support LIPA business of knowing, guarantees that the PLMN selected supports the LIPA business.

For example: it is { (1,10), (1,20), (2,20) (3,30) } that UE allows the CSG list of access. wherein, PLMN 2 supports LIPA, and the ePLMN that the current rPLMN registered of UE is 4, UE is (1,2,3).Due to the rPLMN of UE, not in range of choice, UE selects in ePLMN.The CSG of the community that UE may select is 20, and the PLMN of support is (1,2).Wherein 1,2 all in ePLMN, because PLMN 2 supports the LIPA business, UE can preferentially select 2.

Perhaps pre-configured or tactful according to operator, will support that the PLMN of LIPA business is configured to high priority, and the ePLMN of UE be (2,1,3), last UE selection PLMN 2.

Step 403:UE initiating business request, request access LIPA business.

Embodiment tetra-:

The technical scheme that embodiment tetra-and embodiment tri-are the phase trans-substitution.Referring to Fig. 4, comprise the following steps:

Step 401: identical with enforcement three, UE can know by the CSG list of preserving the PLMN that supports the LIPA business.

Step 402:UE takes the mode identical with existing technology when selecting PLMN.

For example, the list of the CSG of the permission of UE access is { (1,10), (1,20), (2,20) (3,30) }, the current rPLMN registered of UE is 4, the CSG that the ePLMN of UE is the community that may select of (1,2,3) .UE is 20, PLMN is (1,2), wherein (1,2) is all in the CSG list that allows access.According to prior art, the PLMN that last UE selects is 1, and only has PLMN 2 just to allow UE access LIPA business.

Step 403:UE judges whether to initiate the LIPA business, particularly, according to the parameter in the broadcast message of receiving, judges whether current area supports LIPA; And judge according to the CSG list of preserving whether the PLMN of current selection supports LIPA.

If above-mentioned condition all meets, UE initiates the business request information that LIPA is relevant and arrives MME.

If the PLMN that current UE is selected does not support LIPA, UE, before initiating the LIPA business, can carry out the PLMN gravity treatment, guarantees that the PLMN that UE selects can support the LIPA business; Perhaps UE can select temporarily not access the LIPA business, and while waiting until next PLMN gravity treatment, the LIPA service request is initiated in gravity treatment during to the PLMN that can access LIPA again.

UE can carry out the PLMN gravity treatment before initiating the LIPA business: connect the example in step 402, UE is known the PLMN=2 that supports the LIPA business according to the CSG list of preserving, and UE reselects PLMN 2.

Embodiment five:

Fig. 5 is the NAS signalling interactive process schematic diagram in the embodiment of the present invention five, comprises the following steps:

Step 501:UE sends the NAS request message to MME.

In this step, the NAS request message that UE sends can be non-LIPA business request information, can be also the request of access LIPA business.And UE is sending the NAS request message to before MME, the PLMN selection course is identical with prior art.

Step 502:MME replys corresponding NAS to UE and replys message.

If the request of the NAS in step 501 is non-LIPA business request information, MME replys in message and can carry the PLMN that supports the LIPA business at NAS, and MME can obtain by CAMEL-Subscription-Information the PLMN that supports the LIPA business.After UE gets by this step the PLMN that supports the LIPA business, when UE moves under the CSG community or mixed cell of supporting LIPA, UE, when doing the PLMN selection, guarantees the member that UE is current C SG community or mixed cell as far as possible.Further, if current area is supported the LIPA business, UE is when doing the PLMN selection, and the PLMN of LIPA business is supported in preferential selection.After a while, UE can initiate the LIPA service request.

If the NAS request message in step 501 is the request of access LIPA business, due to before sending out this request message, UE carries out the PLMN selection according to prior art, the PLMN that MME judges the current UE selection according to CAMEL-Subscription-Information can't activate the LIPA business for UE, therefore, in this step, MME replys service denial message, carry the reason of refusal in this message, indicate UE and need to carry out the PLMN gravity treatment, and carry the PLMN that supports the LIPA business, thereby guarantee that UE can correctly access the LIPA business in follow-up.

In above-mentioned all embodiment, whether HeNB can support the LIPA business by the pre-configured PLMN of knowing of operator, or in S 1 process of establishing, from MME issues the message of HENB, knows whether PLMN supports the LIPA business.Perhaps also can when UE initially access, preserve the PLMN list that current UE is relevant or allow the CSG list accessed, indicating PLMN in the list of preservation and whether support the LIPA business.

Embodiment six,

The present embodiment is described the flow process that UE switches between base station.

In the present embodiment, to obtain the related system broadcast message of purpose base station by UE, UE is first member's PLMN information by UE in the PLMN of purpose base station cell broadcast under one or more PLMN, in the PLMN of base station cell broadcast, be perhaps rPLMN or the ePLMN of UE, and UE is that member's PLMN sign sends to source base station under this PLMN, and then source base station is according to following information (rPLMN of the UE of preservation or ePLMN, if and the current access of UE is the LIPA business, source base station can be preserved the PLMN that supports the LIPA business) carry out the PLMN selection, guarantee that the PLMN selected can access the LIPA business.Source base station sends to MME by the PLMN information of selection, by MME, completes access control.

The handoff procedure of UE shown in Figure 6 comprises the following steps:

Step 601:UE obtains the system broadcast information of target BS, and this system broadcast information comprises: the PLMN list of purpose community, CSG ID etc.

Step 602:UE sends measurement report to source base station.In this measurement report, not only comprise: the Cell Global Identity of purpose HeNB community (ECGI), Routing Area code (TAC), CSG ID and member, but also comprise one or more in the PLMN ID that the purpose base station cell broadcasts.

Wherein, the corresponding PLMN of PLMN ID comprised in described measurement report is: UE is purpose CSG community or mixed cell member, or, the rPLMN of UE or ePLMN, and UE is purpose CSG community or mixed cell member under this PLMN.Be specially: in the PLMN that described PLMN ID is the purpose Cell Broadcast CB, UE is purpose CSG community or mixed cell member's PLMN sign under which or which PLMN, if UE is the member under a plurality of PLMN of purpose Cell Broadcast CB, what described measurement report comprised can be the PLMN identification list; Or, described PLMN ID is the PLMN ID that UE can access at the purpose base station cell, be to be rPLMN or the ePLMN of UE in the PLMN of purpose Cell Broadcast CB, and PLMN ID in the CSG list that the CSG ID of purpose Cell Broadcast CB and corresponding PLMN ID can access at UE, if it is a plurality of that the PLMN ID that UE can access in the purpose community has, what described message comprised can be the PLMN identification list.

Source base station is according to measurement report, and being chosen in the purpose community the PLMN ID that can access in the purpose community from UE is the PLMN of UE service.It should be noted that, source base station need to guarantee that the PLMNID selected is rPLMN or the ePLMN of UE.And further, if the business of current switching is the LIPA business, source base station also needs to guarantee that the corresponding PLMN of the PLMN ID selected supports the LIPA business.Because source base station has been preserved rPLMN and the ePLMN of UE, and the PLMN that supports the LIPA business, source base station can guarantee that the corresponding PLMN of the PLMN ID selected supports the LIPA business according to rPLMN, the ePLMN of the UE preserved and the PLMN of support LIPA business.Initially access Shi， base station, this base station at UE and can receive from MME rPLMN and the ePLMN of UE, and the PLMN that supports the LIPA business.If UE accesses this source base station for the first time, by X2, switch, this base station obtains rPLMN and the ePLMN of UE from the source base station of switching last time, and the PLMN that supports the LIPA business.Need to further illustrate, if the business of the current access of UE comprises the LIPA business, source base station is necessary to preserve the PLMN that supports the LIPA business.

Perhaps source base station can know whether PLMN supports the LIPA business by the configuration of operator, or in the S1 process of establishing, from MME, issues the message with source base station and knows whether PLMN supports the LIPA business.Perhaps also can when UE initially access, preserve the PLMN list that current UE is relevant or allow the CSG list accessed, indicating PLMN in the list of preservation and whether support the LIPA business.

The PLMN ID comprised in the corresponding UE measurement report is that in the PLMN of purpose Cell Broadcast CB, UE is the method for purpose CSG community or mixed cell member's PLMN sign under which or which PLMN, selected PLMN should be rPLMN or the ePLMN of UE, afterwards, the PLMN of selection sign is included in TAI, by step 603, sends to MME.

Step 603: source base station sends handoff requirement message to MME.

Described handoff requirement message not only comprises ECGI and the CSG ID of purpose community, also comprises purpose community place TAI, and described TAI comprises the PLMN sign of selection.

As the prior art, if the purpose community is the hybrid access module, described message also comprises the community access module.

Step 604:MME carries out access control according to the signing CSG information of the UE of the CSG ID received and preservation to UE.

MME can obtain from HSS the signing CSG information of UE.

Wherein, the CSG ID list that the signing CSG packets of information of UE can access under rPLMN and ePLMN containing UE, for example: the CSG list that UE can access can be PLMN1{CSG1, CSG2 ..., PLMN2{CSG5, CSG6 ...; The CSG list that UE can access can be also { PLMN1, CSG1}, { PLMN2, CSG1}, { PLMN2, CSG3} ... Deng.Except above-mentioned information, also comprise the APN information that can access LIPA, this APN information comprises the PLMN information that can select.

The present invention does not limit the concrete form of the CSG list that UE can access, and when MME carries out access control to UE, needs judge with reference to PLMN and these two information of purpose community CSG ID of selecting whether UE can access the purpose community.Further, if the business of the current switching of UE is the LIPA business, MME also needs the PLMN that judges current selection whether can access the LIPA business.

After the access control failure, MME sends switching and prepares failed message to source base station, finishes this handoff procedure, if handoff requirement message comprises access module, MME determines the member condition of UE, and sends to the purpose base station by handover request message.

Subsequent process is identical with prior art, does not repeat them here.

Embodiment seven:

The present embodiment is the replacement scheme of embodiment six.

The difference of the present embodiment and embodiment six is, UE is before execution step 602, having known the business of current switching due to UE is the LIPA business, UE carries out PLMN while screening for the first time in execution step 602, the PLMN ID selected is: UE is purpose CSG community or mixed cell member, or, the rPLMN of UE or ePLMN, and UE is purpose CSG community or mixed cell member under this PLMN.Be specially: in the PLMN that described PLMN ID is the purpose Cell Broadcast CB, UE is purpose CSG community or mixed cell member's PLMN sign under which or which PLMN, if UE is the member under a plurality of PLMN of purpose Cell Broadcast CB, what described measurement report comprised can be the PLMN identification list; Or, described PLMN ID is the PLMNID that UE can access at the purpose base station cell, be to be rPLMN or the ePLMN of UE in the PLMN of purpose Cell Broadcast CB, and PLMN ID in the CSG list that the CSG ID of purpose Cell Broadcast CB and corresponding PLMN ID can access at UE, if it is a plurality of that the PLMN ID that UE can access in the purpose community has, what described message comprised can be the PLMN identification list.Further, the PLMN in this PLMN list supports that the PLMN of LIPA business of PLMN in LIPA business or current PLMN list and current access is consistent too.

The LIPA business is all supported in the PLMN list that in this step, UE provides, the PLMN of the support LIPA business that the APN information that UE preserves according to self and purpose community provide, the PLMN of LIPA business if the purpose community can provide support.This PLMN information can be 1 or a plurality of.

Step 603: in this step, source HeNB carries out the PLMN selection according to the rPLMN and the ePLMN that preserve, with the difference of embodiment six, is: source HeNB does not need to preserve the PLMN that supports the LIPA business.

Subsequent process is identical with embodiment six, does not repeat them here.

Embodiment eight:

In the present embodiment, be to obtain the related system broadcast message of purpose base station by UE, comprising: the PLMN list of purpose community and CSG ID etc.UE sends to source base station by the PLMN list that belongs to rPLMN and ePLMN in the PLMN list of purpose community, and then source base station is according to following information (rPLMN of the UE of preservation or ePLMN, if and the current access of UE is the LIPA business, source base station can be preserved the PLMN that supports the LIPA business) carry out the PLMN selection, guarantee that the PLMN selected can access the LIPA business.Source base station sends to MME by the PLMN information of selection, by MME, completes access control.

The switching flow schematic diagram that Fig. 7 is UE in the embodiment of the present invention eight comprises the following steps:

Step 701:UE obtains the system broadcast information of target BS, and this information comprises the PLMN list of purpose community and CSG ID etc.The PLMN list of UE screening purpose community, according to rPLMN and the ePLMN of oneself, guarantee to send to the PLMN list of source base station all in the rPLMN and ePLMN of oneself.

Step 702:UE sends measurement report message to source base station, in this message, except the parameter that prior art comprises, also comprises the PLMN list of the purpose base station after step 701 screening.

The PLMN list that source base station provides according to UE in measurement report is chosen in the PLMN that the purpose community is the UE service.It should be noted that, source base station need to guarantee that the corresponding PLMN of PLMN ID selected is rPLMN or the ePLMN of UE.And further, if the business of current switching is the LIPA business, source base station also needs to guarantee that the corresponding PLMN of the PLMN ID selected supports the LIPA business.Because source base station has been preserved rPLMN and the ePLMN of UE, and support the PLMN. source base station of LIPA business to guarantee that according to the PLMN of the rPLMN, the ePLMN that preserve UE and LIPA business the corresponding PLMN of the PLMN ID selected supports the LIPA business.Initially access Shi， base station, this base station at UE and receive rPLMN and the EPLMN of UE from MME, and the PLMN that supports the LIPA business.If UE accesses this source base station for the first time, by X2, switch, this base station obtains rPLMN and the ePLMN of UE from the source base station of switching last time, and the PLMN that supports the LIPA business.Need to further illustrate, if the business of the current access of UE comprises the LIPA business, source base station is necessary to preserve the PLMN that supports the LIPA business.

The PLMN ID comprised in the corresponding UE measurement report is that in the PLMN of purpose Cell Broadcast CB, UE is the method for purpose CSG community or mixed cell member's PLMN sign under which or which PLMN, selected PLMN should be rPLMN or the ePLMN of UE, afterwards, the PLMN of selection sign is included in TAI, by step 703, sends to MME.

Step 703:MME is that UE carries out access control according to the UE CAMEL-Subscription-Information of preserving.This step, with 604, does not repeat them here.

Embodiment nine:

The difference of the present embodiment and embodiment eight is: source HeNB does not carry out the PLMN selection, but the PLMN list obtained is sent to MME, by MME, is that UE carries out the PLMN selection.Because preserve the CAMEL-Subscription-Information of UE and the business information of current UE access in MME, if UE has accessed the LIPA business, MME also knows the PLMN information that the LIPA business is corresponding.

The switching flow schematic diagram that Fig. 8 is UE in the embodiment of the present invention nine comprises the following steps:

Step 801 and 802 with step 701 and 702, does not repeat them here respectively.

Step 803: the PLMN list that source HeNB sends UE directly sends to MME.MME is according to the PLMN list of receiving in the switching demand, and the PLMN information comprised in the UE the preserved CSG list that can access, and if the business of current access comprise the LIPA business,, according to the PLMN that can access the LIPA business, carry out the PLMN selection.Further, MME carries out access control to UE.

Subsequent process is identical with above-described embodiment.

Method provided by the invention is not only applicable to the LIPA business, can be adapted to other business yet, thereby has guaranteed that UE is at the request access service, or the business continuance while switching and good user experience.

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.

Claims (10)

1. the method that local Internet Protocol accesses (LIPA) business is correctly set up in a support, it is characterized in that, comprising:

Subscriber equipment (UE) obtains the public land mobile network (PLMN) of supporting the LIPA business;

UE is according to the PLMN of described support LIPA business, and in the PLMN that supports the LIPA business, the LIPA business is set up in request.

2. method according to claim 1, is characterized in that, before the LIPA business is set up in request, the method further comprises:

UE judges according to obtained information whether the PLMN of current selection supports the LIPA business, if do not support, do not initiate the LIPA service request, or carry out the PLMN gravity treatment, PLMN by the UE gravity treatment to support LIPA business, and the LIPA business is set up in request in the PLMN that supports the LIPA business.

3. method according to claim 1, is characterized in that, after getting the PLMN that supports the LIPA business, and, before the LIPA business is set up in request, the method comprises:

When selecting PLMN, UE preferentially selects to support the PLMN of LIPA business according to the PLMN of described support LIPA business.

4. according to the described method of claims 1 to 3 any one, it is characterized in that:

UE, when moving to closo community (CSG cell) or overlay area, mixed type community (hybrid cell), obtains system broadcast information, obtains the PLMN that supports the LIPA business from described system broadcast information.

5. according to the described method of claims 1 to 3 any one, it is characterized in that:

UE obtains by open mobile alliance device management (OMA-DM) CSG list or the CSG of the operator list that UE allows access, and obtains the PLMN that supports the LIPA business from described CSG list.

6. according to the described method of claims 1 to 3 any one, it is characterized in that:

UE replys message and obtains the PLMN that supports the LIPA business from the Non-Access Stratum (NAS) of Mobility Management Entity (MME).

7. according to the described method of claims 1 to 3 any one, it is characterized in that:

In switching, UE obtains the PLMN that supports the LIPA business from the system broadcast information of purpose base station, and carries the PLMN list in sending to the measurement report of source base station, and the PLMN in described PLMN list all supports the LIPA business.

8. the method that local Internet Protocol accesses (LIPA) business is correctly set up in a support, it is characterized in that, at the handoff procedure of subscriber equipment (UE), the method comprises:

Source base station obtains the public land mobile network (PLMN) of supporting the LIPA business;

Source base station is according to the registration PLMN(rPLMN of UE), equivalent PLMN(ePLMN) and the PLMN that supports the LIPA business, select a PLMN who supports LIPA as the PLMN that in the purpose community is the UE service.

9. method according to claim 8 is characterized in that:

When UE initially accesses, source base station obtains the PLMN that supports the LIPA business from Mobility Management Entity (MME);

Perhaps, whether support the LIPA business by the pre-configured PLMN of knowing.

10. the method that local Internet Protocol accesses (LIPA) business is correctly set up in a support, it is characterized in that, at the handoff procedure of subscriber equipment (UE), the method comprises:

Source base station receives measurement report from UE, comprises public land mobile network (PLMN) list of purpose community in described measurement report, and the PLMN in described PLMN list belongs to the registration PLMN(rPLMN of described UE) or equivalent PLMN(ePLMN);

Source base station sends to Mobility Management Entity (MME) by described PLMN list;

MME, according to rPLMN, the ePLMN of UE and the PLMN that supports the LIPA business, selects a PLMN who supports LIPA as the PLMN that in the purpose community is the UE service.

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