CN102892165A - Switching method and system for home evolved node base station - Google Patents
Switching method and system for home evolved node base station Download PDFInfo
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- CN102892165A CN102892165A CN2011102072369A CN201110207236A CN102892165A CN 102892165 A CN102892165 A CN 102892165A CN 2011102072369 A CN2011102072369 A CN 2011102072369A CN 201110207236 A CN201110207236 A CN 201110207236A CN 102892165 A CN102892165 A CN 102892165A
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Abstract
The invention discloses a switching method for a home evolved node base station. The method comprises the following steps of: after a home base station gateway receives an X2 switching request message sent by a source home evolved node base station, judging whether closed subscriber group identification (CSG ID) of the source home evolved node base station is the same with the CSG ID of the target home evolved node base station, executing a switching operation based on an X2 interface according to a judging result, or executing a corresponding switching operation according to an acquired access control result of a mobile management entity (MME). The invention also discloses a switching system for the home evolved node base station. With adoption of the method and system disclosed by the invention, switching of the home evolved node base station can be realized and signalling load of a core network also can be reduced.
Description
Technical field
The present invention relates to wireless communication technology, refer to especially a kind of changing method and system of Home eNodeB.
Background technology
Home eNodeB is a kind of small-sized low power base station, private resource as private user, be deployed in the private sites such as family, group, company or school, by access in radio equipment connections such as cable, digital subscriber line (DSL, Digital Subscriber Line) or optical fiber in the core net of operator.The Main Function of Home eNodeB is: provide higher service rate to the user, and reduce and use the needed cost of high-rate service, the covering that remedies simultaneously existing distributed cellular radio communication system is not enough.The advantage of Home eNodeB comprises: low-cost, easy to use, low power output, saved operator and set up with the expense of base station maintenance, solve indoor coverage optimization etc.Wherein, described easy to use referring to: Home eNodeB can plug and play.
In Long Term Evolution (LTE, Long Term Evolution) system, Home eNodeB is called as the Home eNodeB of evolution by (HeNB, Home Evolved Node B).Fig. 1 is the network architecture schematic diagram of HeNB in the prior art.Subscriber equipment under the HeNB (UE, User Equipment) is based on the Home eNodeB Access Network (HeNBAN, Home Evloved NodeB Access Network) of existing air protocol access evolution.HeNBAN comprises: the femto gateway of HeNB and evolution (HeNB GW, Home Evolved NodeB Gateway); Wherein, HeNB GW is optional network element.Only connect a residential quarter under the HeNB.HeNB can be directly connected to by the S1 interface block core (EPC, Evolved Packet Core) of evolution; Wherein, HeNB is connected to gateway (S-GW, Serving GateWay) by S1-U interface, and HeNB is connected to mobile management entity (MME, Mobility Management Entity) by S1-MME interface.HeNB also can be connected to EPC by HeNB GW; Wherein, S1-U interface can terminate in HeNB GW, perhaps, can terminate in EPC, and S1-MME interface process HeNB GW is to EPC.
The function of the function that HeNB supports and evolved base station (eNB, evolved Node B) is basic identical.The major function of HeNB GW comprises: the S1 message that the S1 message that relaying UE is relevant, the non-UE of termination are relevant and select MME etc. for UE in attaching process.In addition, Home eNodeB management system (the HeMS of the evolution among Fig. 1, HeNB Management System) HeNB is carried out maintenance and management, and according to the requirement of operator configuration and control HeNB, wherein, most importantly realize configuration feature for HeNB, the content of configuration comprises: the examining of positional information, the parameter of HeNB, the parameter of core net, wireless access network (RAN, the parameter of parameter Radio Access Network) and wireless frequency (RF, Radio Frequency).The function that safety in security gateway (SeGW, the Security Gateway) network enabled is relevant.
Therefore HeNB, has introduced the concept of sealing member group (CSG, Closed Subscriber Group) and has carried out access control only for the specific user provides service.Each HeNB has specific CSG attribute, and described CSG attribute comprises: the sealing member organizes sign (CSG ID, CSG IDentity) and access module.Here, for HeNB has defined three kinds of access modules, be respectively: sealing (Close) pattern, mixing (Hybrid) pattern and opening (Open) pattern; Wherein, under the Close pattern, only have the sealing member composition person of corresponding CSG ID sign just can access; Under the Hybrid pattern, allow all UE accesses, but have the sealing member composition person of corresponding CSG ID sign to enjoy higher priority; Under the Open pattern, allow all UE accesses.
Each UE can be signed in among the above CSG, and the CSG of permission tabulation (ACL, Allowed CSG List) has comprised the CSG ID of the CSG that permission UE can access.UE and core net are all preserved ACL.For the Close residential quarter, MME carries out access control according to the CSG ID of Target cell and the ACL of UE.For the Hybrid residential quarter, HeNB also needs to preserve the member condition (Membership status) of access UE, and carries out member's checking (Membership verification).Here, described Close residential quarter refers to: access module is the residential quarter of Close pattern; Described Hybrid residential quarter refers to: access module is the residential quarter of Hybrid pattern.
Based on existing third generation partner program (3GPP, 3
RdGeneration Partnership Project) agreement, UE can have two kinds of flow processs to switch between HeNB, comprising: based on the switching flow of S1 interface and based on the switching flow of direct X2 interface.
UE based on the switching flow of S1 interface, as shown in Figure 2, may further comprise the steps between HeNB:
Step 201:UE sends measurement report to source HeNB;
Here, described measurement report comprises: cellular global identity (CGI, Cell Global Indentity), tracing area sign (TAI, Tracking Area Indentity), CSG ID and member's sign (Member Indication).
Step 202: source HeNB receives the measurement report that UE sends, and after determining to switch the decision of UE corresponding HeNB to Target cell, sends switching to MME and require (HANDOVER REQUIRED) message;
Here, described HANDOVER REQUIRED message comprises: the CSG ID of the HeNB that Target cell is corresponding; Wherein, if Target cell is the Hybrid residential quarter, then described HANDOVER REQUIRED message also comprises: the access module of Target cell; In the following description, the HeNB that Target cell is corresponding is called target HeNB.
After step 203:MME receives HANDOVER REQUIRED message, CSG subscription information based on the CSG ID in this message and storage, carry out access control, and after the access control success, send handover request (HANDOVER REQUEST) message to target HeNB;
Here, if the access control failure, then MME sends to switch to source HeNB and prepares unsuccessfully (HANDOVER PREPARATION FAILURE) message, to stop handoff procedure.
Described HANDOVER REQUEST message comprises: the CSG ID of target HeNB.
When the cell of the access module that has carried Target cell in the HANDOVER REQUIRED message, MME also will be based on the CSG subscription information of the CSG ID in HANDOVER REQUIRED message and storage, determine that UE is linked into the identity of Target cell, that is: determine that UE is linked into Target cell with the member or with non-member's identity, accordingly, in HANDOVER REQUEST message, carry the CSG member condition.
After step 204: target HeNB receives HANDOVER REQUEST message, compare CSG ID and the CSG ID that broadcasts to Target cell in the HANDOVER REQUEST message, and after corresponding the processing, send Handover Request Acknowledge (HANDOVER REQUEST ACKNOWLEDGE) message to MME;
Here, when HANDOVER REQUEST message is carried CSG ID and CSG member condition, if the CSG ID in the HANDOVER REQUEST message is with the same to the CSG ID of Target cell broadcasting, and the value of the CSG member condition in the HANDOVER REQUEST message is " member ", then target HeNB provides the service quality (QoS of member's identity, Quality of Service) service, and to MME transmission HANDOVER REQUEST ACKNOWLEDGE message; If the CSG ID in the HANDOVER REQUEST message is with inconsistent to the CSG ID of Target cell broadcasting, then target HeNB provides the QoS service of non-member's identity, and sends the CSG ID that broadcasts to Target cell really in HANDOVER REQUEST ACKNOWLEDGE message.
When HANDOVER REQUEST message has only been carried CSG ID, if the CSG ID in the HANDOVERREQUEST message is with inconsistent to the CSG ID of Target cell broadcasting, then target HeNB sends to handoff failure (HANDOVER FAILURE) message of MME with the suitable reason value; If the CSG ID that receives in handover request message is with the same to the CSG ID of Target cell broadcasting, then target HeNB sends HANDOVER REQUEST ACKNOWLEDGE message to MME.
After step 205:MME receives HANDOVER REQUEST ACKNOWLEDGE message, send switching command message to source HeNB;
Step 206: after source HeNB receives switching command message, send switching command message to UE;
After step 207:UE receives switching command message, carry out S1 with target HeNB and switch.
From top description, can find out, not be only applicable to the source HeNB situation identical with the CSG ID of target HeNB based on the switching flow of S1 interface, also be applicable to the source HeNB situation different from the CSG ID of target HeNB.
UE based on the switching flow of direct X2 interface, as shown in Figure 3, may further comprise the steps between HeNB:
Step 301:UE sends measurement report to source HeNB;
Here, described measurement report comprises: CGI, TAI, CSG ID and Member Indication.
Step 302: source HeNB judges whether self identical with the CSG ID of target HeNB after receiving the measurement report that UE sends, and determine identical after, to target HeNB transmission X2 handover request message;
Here, the HeNB that Target cell is corresponding just refers to: target HeNB.
When source HeNB and target HeNB are connected in the same MME pond (MME pool), permission based on the condition that direct X2 interface switches is: two have the CSG of identical CSG ID or the switching of hybrid minizone, perhaps, the access way of target HeNB is the open pattern.All are situations of Close residential quarter or Hybrid residential quarter for cell-of-origin and Target cell, the X2 that source HeNB sends to target HeNB sets up the CSG ID that carries source HeNB in request (X2 SETUP REQUEST) message, target HeNB sets up the CSG ID that also comprises target HeNB in response (X2 SETUP RESPONSE) message at the X2 that sends to source HeNB simultaneously, the CSG ID of source HeNB contrast self and target HeNB determines whether initiating source HeNB to the X2 handover request message of target HeNB, particularly, when source HeNB determines self with the CSG ID of target HeNB identical, determine that initiation source HeNB is to the X2 handover request message of target HeNB.And if Target cell is the hybrid residential quarter, then described X2 handoff request message contains the CSG member condition.
After step 303: target HeNB receives X2 handover request message, send the X2 switching request acknowledgement message to source HeNB;
Step 304: after source HeNB receives the X2 switching request acknowledgement message, send switching command message to UE;
After step 305:UE receives switching command message, carry out X2 with target HeNB and switch.
After step 306:X2 switching was finished, target HeNB asked (PATH SWITCH REQUEST) message by the S1 interface to the conversion of MME transmit path;
Here, in order to use correct charging policy, after finishing based on the switching of X2 interface between the HeNB, target HeNB comprises to the PATH SWITCH REQUEST message that MME sends: CSG ID and the access module of target HeNB.
After step 307:MME receives PATH SWITCH REQUEST message, send PATH SWITCH REQUEST message authentication to target HeNB.
From Fig. 2 and Fig. 3, can find out, with compare based on the switching of S1 interface between the HeNB, switching based on direct X2 interface between the HeNB has following advantage: reduced the signaling traffic load of core net (CN, Core Network), also reduced the time delay that too much Signalling exchange causes simultaneously.Here, described CN specifically can be MME.But, be only applicable to the CSGID situation identical with the CSG ID of target HeNB of source HeNB based on the switching of direct X2 interface, be not suitable for the CSG ID situation different from the CSG ID of target HeNB of source HeNB.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of changing method and system of Home eNodeB, can in the switching that realizes Home eNodeB, reduce the signaling traffic load of core net.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of changing method of Home eNodeB, the method comprises:
After femto gateway is received the X2 handover request message of source Home eNodeB transmission, judge whether the source Home eNodeB is identical with the CSG ID of target Home eNodeB, and according to judged result, execution is carried out corresponding handover operation based on the handover operation of X2 interface or according to the access control result of the MME that obtains.
In the such scheme, the method further comprises:
UE sends measurement report to the source Home eNodeB;
Home eNodeB is received measurement report when the source, and when determine switching, sends X2 handover request message to Home eNodeB.
In the such scheme, before whether the CSG ID that judges source Home eNodeB and target Home eNodeB was identical, the method further comprised:
Femto gateway is set up in the process at X2, knows and preserves and the CSG ID that self sets up all Home eNodeB that X2 is connected.
In the such scheme, describedly set up in the process at X2, know and the CSG ID that self sets up all Home eNodeB that X2 is connected, for:
Home eNodeB is by operational administrative and safeguard (OAM, Operation Administration and Maintenance) configuration mode, know the SCTP (SCTP with the femto gateway of self setting up X2 interface, Stream Control Transmission Protocol) transport network layer (TNL, the Transport Network Layer) address that connects; Perhaps,
Utilize the discovery procedure of automatic neighbouring relations (ANR, Automatic Neighbor Relation) and TNL address, know the TNL address that is connected with the SCTP of the femto gateway of self setting up X2 interface;
Femto gateway by with the information interaction of Home eNodeB, know and the CSG ID that self sets up all Home eNodeB that X2 is connected.
In the such scheme, when whether the CSG ID that judges source Home eNodeB and target Home eNodeB was identical, the method further comprised:
Femto gateway from the CSG ID that self preserves, obtains the CSG ID of source Home eNodeB and target Home eNodeB according to the CGI of the Target cell in the CGI of cell-of-origin and the X2 handover request message received.
In the such scheme, described according to judged result, carry out based on the handover operation of X2 interface or according to the access control result of the MME that obtains, carry out corresponding handover operation, for:
When determining that the CSG ID of source Home eNodeB and target Home eNodeB is identical, carry out the handover operation based on X2 interface; Determine the CSG ID of source Home eNodeB and target Home eNodeB not simultaneously, the access control result according to the MME that obtains carries out corresponding handover operation.
In the such scheme, described execution is based on the handover operation of X2 interface, for:
Femto gateway is transmitted X2 handover request message to the target Home eNodeB;
After the target Home eNodeB is received X2 handover request message, send the X2 switching request acknowledgement message to femto gateway;
Femto gateway is received the X2 switching request acknowledgement message, sends the X2 switching request acknowledgement message to the source Home eNodeB;
After the source Home eNodeB is received the X2 switching request acknowledgement message, send switching command message to UE;
After UE receives switching command message, carry out X2 with the target Home eNodeB and switch.
In the such scheme, the access control result according to the MME that obtains carries out before the corresponding handover operation, and the method further comprises:
Femto gateway sends the access control apply for information by the S1 interface to MME;
After MME receives the access control apply for information, the CSG subscription information of the CSG ID in the access control apply for information and self storage is mated, and according to matching result, determine the access control result, and return the access control result by the S1 interface to femto gateway.
In the such scheme, described according to matching result, determine the access control result, and return the access control result by the S1 interface to femto gateway, for:
If Target cell is the Close residential quarter, after then determining to mate, MME determines the access control success, and returns the result of access control success to femto gateway by the S1 interface; After determining to mate, MME determines the access control failure, and returns the result of access control failure to femto gateway by the S1 interface;
If Target cell is the Hydrid residential quarter, after then determining to mate, MME determines the access control success, and returns the result of access control success and indicate UE to be member's CSG member condition to femto gateway by the S1 interface; After determining to mate, MME determines the access control success, and is non-member's CSG member condition by the S1 interface to result and the indication UE that femto gateway returns the access control success.
In the such scheme, the access control result of the MME that described foundation is obtained carries out corresponding handover operation, for:
When the access control result is the access control success, carry out the handover operation based on X2 interface; When the access control result is the access control failure, stop the handover operation based on X2 interface.
In the such scheme, describedly return the access control result to Home eNodeB, for:
Return the access control result by the cell in the access control inquiry response messages to femto gateway; Perhaps,
Return the access control result by replying access control inquiry response messages or access control failed message to femto gateway.
In the such scheme, described Home eNodeB is HeNB; Accordingly, described femto gateway is HeNB GW.
The present invention also provides a kind of switched system of Home eNodeB, and this system comprises: source Home eNodeB and femto gateway; Wherein,
The source Home eNodeB is used for sending X2 handover request message to femto gateway;
Femto gateway, after being used for receiving the X2 handover request message of source Home eNodeB transmission, judge whether the source Home eNodeB is identical with the CSG ID of target Home eNodeB, and according to judged result, execution is carried out corresponding handover operation based on the handover operation of X2 interface or according to the access control result of the MME that obtains.
In the such scheme, this system further comprises: UE is used for sending measurement report to the source Home eNodeB;
Described source Home eNodeB after also being used for receiving the measurement report of UE transmission, determines to switch.
In the such scheme, described femto gateway also was used for setting up process at X2 before whether the CSG ID that judges Home eNodeB and target Home eNodeB is identical, knew and preserved and the CSG ID that self sets up all Home eNodeB that X2 is connected.
In the such scheme, described femto gateway is when whether the CSGID that judges source Home eNodeB and target Home eNodeB is identical, also be used for the CGI according to the Target cell of the CGI of cell-of-origin and the X2 handover request message received, from the CGI that self preserves, obtain the CSG ID of source Home eNodeB and target Home eNodeB.
In the such scheme, this system further comprises MME, after being used for receiving the access control apply for information of femto gateway transmission, the CSG subscription information of the CSG ID in the access control apply for information and self storage is mated, and according to matching result, determine the access control result, and return the access control result by the S1 interface to femto gateway;
Described femto gateway is carried out before the corresponding handover operation in the access control result according to the MME that obtains, and also is used for sending the access control apply for information by the S1 interface to MME; And receive the access control result that MME returns.
The changing method of Home eNodeB provided by the invention and system, after femto gateway is received the X2 handover request message of source Home eNodeB transmission, judge whether the source Home eNodeB is identical with the CSG ID of target Home eNodeB, and according to judged result, carry out the access control result of the MME that obtains based on handover operation or the foundation of X2 interface, carry out corresponding handover operation, so, the switching of Home eNodeB can be realized, simultaneously, the signaling traffic load of core net can also be reduced.
The changing method of Home eNodeB provided by the invention and system are not only applicable to the CSGID situation identical with the CSG ID of target Home eNodeB of source Home eNodeB, and are applicable to the CSG ID situation different from the CSG ID of target Home eNodeB of source Home eNodeB.
Description of drawings
Fig. 1 is the network architecture schematic diagram of HeNB in the prior art;
Fig. 2 is based on the changing method schematic flow sheet of S1 interface between the prior art HeNB;
Fig. 3 is based on the changing method schematic flow sheet of direct X2 interface between the prior art HeNB;
Fig. 4 is the changing method schematic flow sheet of Home eNodeB of the present invention;
Fig. 5 is the changing method schematic flow sheet of embodiment Home eNodeB;
Fig. 6 is the switched system structural representation of Home eNodeB of the present invention.
Embodiment
Basic thought of the present invention is: after femto gateway is received the X2 handover request message of source Home eNodeB transmission, judge whether the source Home eNodeB is identical with the CSG ID of target Home eNodeB, and according to judged result, execution is carried out corresponding handover operation based on the handover operation of X2 interface or according to the access control result of the MME that obtains.
The present invention is further described in more detail below in conjunction with drawings and Examples.
Take Home eNodeB as HeNB, home gateway is that HeNB GW is example, and the changing method of Home eNodeB of the present invention as shown in Figure 4, may further comprise the steps:
Step 401: when source HeNB determines to switch, send X2 handover request message to HeNB GW;
Here, source HeNB determines that the concrete processing procedure of switching can adopt prior art, and described X2 handoff request message is drawn together: the CGI of Target cell; Further, when Target cell is the Hybrid residential quarter, can also comprise: the CSG member condition; Wherein, described Hybrid residential quarter refers to: access module is the residential quarter of Hybrid pattern.
Before source HeNB determined to switch, the method can further include:
UE sends measurement report to source HeNB;
Wherein, described measurement report comprises: the CGI of Target cell, TAI, CSG ID and Member Indication.
After step 402:HeNB GW receives X2 handover request message, judge whether source HeNB is identical with the CSG ID of target HeNB, and according to judged result, carry out the access control result of the MME that obtains based on handover operation or the foundation of X2 interface, carry out corresponding handover operation.
Here, for the so densely covered type base station of HeNB, can be many owing to set up the HeNB number of direct X2 interface, and HeNB has the at any time characteristics of plug, therefore, the number of the direct X2 interface between the HeNB is numerous, thereby can cause the foundation of X2 interface and system maintenance to become very complicated.In this case, the X2 agency is considered by people.Compare with direct X2 interface, the X2 agency has the following advantages:
At first, HeNB only is configured an X2 interface that is connected to HeNB GW, so, has reduced the quantity of X2 interface and relevant SCTP, thereby has simplified the complexity of HeNB system maintenance.
Secondly, information arrives HeNB GW through SeGW, so, provides better safety to support.
At last, reduced interoperability test (InterOperability Testing) between the different vendor.
In relaying (Relay) system, prior art has been supported the X2 agency, therefore, based on above-mentioned analysis, can adopt HeNB GW to judge whether the source Home eNodeB is identical with the CSG ID of target Home eNodeB, and according to judged result, carry out the access control result of the MME that obtains based on handover operation or the foundation of X2 interface, carry out corresponding handover operation.
Before whether the CSG ID that judges source HeNB and target HeNB was identical, the method can further include:
HeNB GW sets up in the process at X2, knows and preserves and the CSG ID that self sets up all HeNB that X2 is connected;
Particularly, HeNB is known the TNL address that is connected with the SCTP of the HeNB GW that self sets up X2 interface by the OAM configuration mode; Perhaps,
Utilize the discovery procedure of ANR and TNL address, know the TNL address that is connected with the SCTP of the HeNB GW that self sets up X2 interface;
HeNB GW by with the information interaction of HeNB, know and the CSG ID that self sets up all HeNB that X2 is connected;
Here, described by the OAM configuration mode, know that the TNL address that is connected with the SCTP of the HeNB GW that self sets up X2 interface refers to: after HeNB powers on, carry out interacting message with HeMS, behind the HeMS checking HeNB, the parameter of configuration HeNB, and set up the TNL address that the SCTP of the described HeNB GW of X2 interface is connected to HeNB notice and HeNB; Wherein, the described OAM configuration mode that passes through knows that the concrete processing procedure of the TNL address that is connected with the SCTP of described HeNB GW is prior art, repeats no more here;
Utilize the discovery procedure of ANR and TNL address, know that setting up the TNL address that the SCTP of the HeNB GW of X2 interface is connected with HeNB refers to: behind the residential quarter of the UE measurement target HeNB under the HeNB residential quarter, source, report the Physical Cell Identifier (PCI that comprises Target cell to source HeNB, Physical Cell Identity) measurement report, after source HeNB receives measurement report, send the message of the system information (SI, System Information) of obtaining Target cell to UE; After UE receives message, report CGI, TAI, CSG ID and member's sign of the Target cell that spies out according to described PCI to source HeNB; The CGI of the Target cell that source HeNB reports by UE can be known the eNB sign (ID, eNB IDentity) of target HeNB; Thereby source HeNB can be by the discovery procedure of TNL address, the TNL address that the SCTP of the HeNB GW of X2 interface connects is set up in acquisition, accordingly, HeNB GW can pass through the TNL address discovery, obtains to set up the transmission network layer address that the SCTP of the target HeNB of X2 interface connects; Wherein, utilize the discovery procedure of ANR and TNL address, know that the concrete processing procedure of the TNL address that is connected with the SCTP of described HeNB GW is prior art, repeat no more here.
Behind the TNL address that obtains opposite end entity (Entity), HeNB or HeNB GW initiate X2 and set up request message; Wherein, when HeNB set up request message to HeNB GW initiation X2, described X2 set up request message and comprises: the eNB ID of HeNB, service cell information, neighbor cell message and MME pool information; When HeNB GW set up request message to HeNB initiation X2, described X2 set up request message and comprises: the eNB ID of HeNB GW, service cell information, neighbor cell message and MME pool information; After opposite end Entity receives that X2 sets up request message, reply X2 and set up response message, wherein, described X2 sets up response message and comprises: the eNB ID of opposite end Entity, service cell information, neighbor cell message and MME pool information; Described service cell information further comprises: CGI, PCI and CSG ID.Thereby HeNB GW can set up process by X2 to be known and the CSG ID that self sets up all HeNB that X2 is connected.HeNB GW can set up the one-to-one relationship of CGI and the CSG ID of HeNB when preserving the CSG ID of all HeNB.
When whether the CSG ID that judges source HeNB and target HeNB was identical, the method can further include:
HeNB GW from the CSG ID that self preserves, obtains the CSG ID of source HeNB and target HeNB according to the CGI of the Target cell in the CGI of cell-of-origin and the X2 handover request message received;
Here, the residential quarter of source HeNB service is called the cell-of-origin.
Described according to judged result, carry out based on the handover operation of X2 interface or according to the access control result of the MME that obtains, carry out corresponding handover operation, be specially:
When determining that the CSG ID of source HeNB and target HeNB is identical, carry out the handover operation based on X2 interface; Determine the CSG ID of source HeNB and target HeNB not simultaneously, the access control result according to the MME that obtains carries out corresponding handover operation;
Wherein, described execution is specially based on the handover operation of X2 interface:
HeNB GW transmits X2 handover request message to target HeNB;
After target HeNB receives X2 handover request message, send the X2 switching request acknowledgement message to HeNB GW;
HeNB GW receives the X2 switching request acknowledgement message, sends the X2 switching request acknowledgement message to source HeNB;
After source HeNB receives the X2 switching request acknowledgement message, send switching command message to UE;
After UE receives switching command message, carry out X2 with target HeNB and switch.
Wherein, execution is identical based on concrete processing procedure and the prior art of the handover operation of X2 interface, and HeNB GW plays relaying in the handover operation flow process.
Access control result according to the MME that obtains carries out before the corresponding handover operation, and the method can further include:
HeNB GW sends the access control apply for information by the S1 interface to MME;
After MME receives the access control apply for information, the CSG subscription information of the CSG ID in the access control apply for information and self storage is mated, and according to matching result, determine the access control result, and return the access control result by the S1 interface to HeNB GW;
Wherein, if Target cell is the Hydrid residential quarter, then described access control apply for information also comprises: the access module of Target cell;
Described according to matching result, determine the access control result, and return the access control result by the S1 interface to HeNB GW, be specially:
If Target cell is the Close residential quarter, after then determining to mate, MME determines the access control success, and returns the result of access control success to HeNB GW by the S1 interface; After determining to mate, MME determines the access control failure, and returns the result of access control failure to HeNB GW by the S1 interface;
If Target cell is the Hydrid residential quarter, after then determining to mate, MME determines the access control success, and returns the result of access control success and indicate UE to be member's CSG member condition to HeNB GW by the S1 interface; After determining to mate, MME determines the access control success, and is non-member's CSG member condition by the S1 interface to result and the indication UE that HeNB GW returns the access control success.
Wherein, described Close residential quarter refers to: access module is the residential quarter of Close pattern.
The access control result of the MME that described foundation is obtained carries out corresponding handover operation, is specially:
When the access control result is the access control success, carry out the handover operation based on X2 interface; When the access control result is the access control failure, stop the handover operation based on X2 interface.
Below in conjunction with embodiment the present invention is described in further detail again.
The application scenarios of present embodiment is: HeNB GW sets up in the process at X2, knows and preserves and the CSG ID that self sets up all HeNB that X2 is connected.The changing method of present embodiment Home eNodeB as shown in Figure 5, may further comprise the steps:
Step 501:UE sends measurement report to source HeNB;
Here, described measurement report comprises: CGI, TAI, CSG ID and Member Indication.
Step 502: after source HeNB receives the measurement report that UE sends, and when determining to switch, send X2 handover request message to HeNB GW;
Here, source HeNB determines that the concrete processing procedure of switching can adopt prior art.
Described X2 handoff request message is drawn together: the CGI of Target cell; Further, when Target cell is the Hybrid residential quarter, can also comprise: the CSG member condition.
After step 503:HeNB GW receives X2 handover request message, judge whether source HeNB identical with the CSG ID of target HeNB, when the two CSG ID is identical, execution in step 506, when the two CSG ID not simultaneously, execution in step 504;
Step 504:HeNB GW sends the access control apply for information by the S1 interface to MME;
Here, if Target cell is the Hydrid residential quarter, then described access control apply for information also comprises: the access module of Target cell.
After step 505:MME receives the access control apply for information, the CSG subscription information of the CSGID in the access control apply for information and self storage is mated, and according to matching result, determine the access control result, and return the access control result by the S1 interface to HeNB GW;
Here, described according to matching result, determine the access control result, and return the access control result to HeNB GW, be specially:
If Target cell is the Close residential quarter, after then determining to mate, MME determines the access control success, and returns the result of access control success to HeNB GW by the S1 interface; After determining to mate, MME determines the access control failure, and returns the result of access control failure to HeNB GW by the S1 interface;
If Target cell is the Hydrid residential quarter, after then determining to mate, MME determines the access control success, and returns the result of access control success and indicate UE to be member's CSG member condition to HeNB GW by the S1 interface; After determining to mate, MME determines the access control success, and is non-member's CSG member condition by the S1 interface to result and the indication UE that HeNB GW returns the access control success.
Returning access control to HeNB GW as a result the time, can return the access control result to HeNB GW by the cell in the access control inquiry response messages, also can return the access control result to HeNB GW by replying access control inquiry response messages or access control failed message.Wherein, for concrete processing procedure from the cell in the access control inquiry response messages to HeNB GW that return the access control result by, give an example, when the access control success, MME inquires that with access control it is 1 that access control result (access control result) cell in the corresponding message is filled out, when the access control failure, MME inquires that with access control it is 0 that access control result cell in the corresponding message is filled out, here, HeNB GW is known the result of 1 expression access control success in advance, 0 represents the result of access control failure, thereby can know the represented concrete access control result of access control result cell in the access control inquiry corresponding message; If adopt by the mode of replying access control inquiry response messages or access control failed message and return the access control result to HeNB GW, then when the access control success, return the result of access control success to HeNB GW by replying the access control inquiry response messages, when the access control failure, return the result of access control failure to HeNB GW by replying the access control failed message.
Step 506:HeNB GW transmits X2 handover request message to target HeNB;
Here, when the access control result who receives as HeNB GW comprised the CSG member condition, described X2 handoff request message contained: the CSG member condition.
When the access control result who receives as HeNB GW is the access control failure, returns to switch to source HeNB and prepare failed message, to stop handoff procedure; Described switching is prepared failed message and is comprised cause value, such as: switch target and be not allowed to.
After step 507: target HeNB receives X2 handover request message, send the X2 switching request acknowledgement message to HeNB GW;
Step 508:HeNB GW receives the X2 switching request acknowledgement message, sends the X2 switching request acknowledgement message to source HeNB;
Step 509: after source HeNB receives the X2 switching request acknowledgement message, send switching command message to UE;
After step 510:UE receives switching command message, carry out X2 with target HeNB and switch;
Step 511: after switching was finished, target HeNB sent PATH SWITCH REQUEST message by the S1 interface to HeNB GW;
Here, in order to use correct charging policy, after finishing based on the switching of X2 interface between the HeNB, target HeNB comprises to the PATH SWITCH REQUEST message that HeNB GW sends: CSG ID and the access module of target HeNB.
Step 512:HeNB GW transmits the PATH SWITCH REQUEST message of receiving by the S1 interface to MME;
Here, described PATH SWITCH REQUEST message comprises: CSG ID and the access module of target HeNB.
After step 513:MME receives PATH SWITCH REQUEST message, return PATH SWITCH REQUEST message authentication by the S1 interface to HeNB GW;
After step 514:HeNB GW receives PATH SWITCH REQUEST message authentication, return PATH SWITCH REQUEST message authentication by the S1 interface to target HeNB.
One of ordinary skill in the art will appreciate that all or part of step in the said method can come the instruction related hardware to finish by program, described program can be stored in the computer-readable recording medium, such as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
For realizing said method, the present invention also provides a kind of switched system of Home eNodeB, and as shown in Figure 6, this system comprises: source Home eNodeB 61 and femto gateway 62; Wherein,
Wherein, described source Home eNodeB 61 also was used for determining to switch before sending X2 handover request message to femto gateway 62.
This system can further include: UE is used for sending measurement report to source Home eNodeB 61;
Described Home eNodeB 61 also is used for receiving the measurement report that UE sends.
Described femto gateway 62 also was used for setting up process at X2 before whether the CSG ID that judges source Home eNodeB 61 and target Home eNodeB is identical, knew and preserved and the CSG ID that self sets up all Home eNodeB that X2 is connected.
Described femto gateway 62 is when whether the CSG ID that judges source Home eNodeB 61 and target Home eNodeB is identical, also be used for the CGI according to the Target cell of the CGI of cell-of-origin and the X2 handover request message received, from the CGI that self preserves, obtain the CSG ID of source Home eNodeB 61 and target Home eNodeB.
This system can further include MME, after being used for receiving the access control apply for information of femto gateway 62 transmissions, the CSG subscription information of the CSG ID in the access control apply for information and self storage is mated, and according to matching result, determine the access control result, and return the access control result by the S1 interface to femto gateway 62;
Described femto gateway 62 is carried out before the corresponding handover operation in the access control result according to the MME that obtains, and also is used for sending the access control apply for information by the S1 interface to MME; And receive the access control result that MME returns.
Here, described Home eNodeB specifically can be: HeNB; Accordingly, described femto gateway specifically can be HeNB GW.
Here, the concrete processing procedure of the Home eNodeB in the system of the present invention, femto gateway, UE and MME describes in detail hereinbefore, repeats no more.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (18)
1. the changing method of a Home eNodeB is characterized in that, the method comprises:
After femto gateway is received the X2 handover request message of source Home eNodeB transmission, judge whether source Home eNodeB and the sealing member of target Home eNodeB organize sign (CSG ID) identical, and according to judged result, execution is carried out corresponding handover operation based on the handover operation of X2 interface or according to the access control result of the mobile management entity (MME) that obtains.
2. method according to claim 1 is characterized in that, the method further comprises:
Subscriber equipment (UE) sends measurement report to the source Home eNodeB;
Home eNodeB is received measurement report when the source, and when determine switching, sends X2 handover request message to Home eNodeB.
3. method according to claim 1 is characterized in that, before whether the CSG ID that judges source Home eNodeB and target Home eNodeB was identical, the method further comprised:
Femto gateway is set up in the process at X2, knows and preserves and the CSG ID that self sets up all Home eNodeB that X2 is connected.
4. method according to claim 3 is characterized in that, describedly sets up in the process at X2, know and the CSG ID that self sets up all Home eNodeB that X2 is connected, for:
Home eNodeB is by operational administrative and safeguard (OAM) configuration mode, knows transport network layer (TNL) address that is connected with the SCTP (SCTP) of the femto gateway of self setting up X2 interface; Perhaps,
Utilize the discovery procedure of automatic neighbouring relations (ANR) and TNL address, know the TNL address that is connected with the SCTP of the femto gateway of self setting up X2 interface;
Femto gateway by with the information interaction of Home eNodeB, know and the CSG ID that self sets up all Home eNodeB that X2 is connected.
5. method according to claim 3 is characterized in that, when whether the CSG ID that judges source Home eNodeB and target Home eNodeB was identical, the method further comprised:
Femto gateway from the CSG ID that self preserves, obtains the CSG ID of source Home eNodeB and target Home eNodeB according to the CGI of the Target cell in the cellular global identity (CGI) of cell-of-origin and the X2 handover request message received.
6. method according to claim 1 is characterized in that, and is described according to judged result, carries out the access control result of the MME that obtains based on handover operation or the foundation of X2 interface, carries out corresponding handover operation, for:
When determining that the CSG ID of source Home eNodeB and target Home eNodeB is identical, carry out the handover operation based on X2 interface; Determine the CSG ID of source Home eNodeB and target Home eNodeB not simultaneously, the access control result according to the MME that obtains carries out corresponding handover operation.
7. method according to claim 6 is characterized in that, described execution is based on the handover operation of X2 interface, for:
Femto gateway is transmitted X2 handover request message to the target Home eNodeB;
After the target Home eNodeB is received X2 handover request message, send the X2 switching request acknowledgement message to femto gateway;
Femto gateway is received the X2 switching request acknowledgement message, sends the X2 switching request acknowledgement message to the source Home eNodeB;
After the source Home eNodeB is received the X2 switching request acknowledgement message, send switching command message to UE;
After UE receives switching command message, carry out X2 with the target Home eNodeB and switch.
8. method according to claim 6 is characterized in that, the access control result according to the MME that obtains carries out before the corresponding handover operation, and the method further comprises:
Femto gateway sends the access control apply for information by the S1 interface to MME;
After MME receives the access control apply for information, the CSG subscription information of the CSG ID in the access control apply for information and self storage is mated, and according to matching result, determine the access control result, and return the access control result by the S1 interface to femto gateway.
9. method according to claim 8 is characterized in that, and is described according to matching result, determines the access control result, and returns the access control result by the S1 interface to femto gateway, for:
If Target cell is sealing (Close) residential quarter, after then determining to mate, MME determines the access control success, and returns the result of access control success to femto gateway by the S1 interface; After determining to mate, MME determines the access control failure, and returns the result of access control failure to femto gateway by the S1 interface;
If Target cell is for mixing (Hydrid) residential quarter, after then determining to mate, MME determines the access control success, and returns the result of access control success and indicate UE to be member's CSG member condition to femto gateway by the S1 interface; After determining to mate, MME determines the access control success, and is non-member's CSG member condition by the S1 interface to result and the indication UE that femto gateway returns the access control success.
10. method according to claim 9 is characterized in that, the access control result of the MME that described foundation is obtained carries out corresponding handover operation, for:
When the access control result is the access control success, carry out the handover operation based on X2 interface; When the access control result is the access control failure, stop the handover operation based on X2 interface.
11. method according to claim 8 is characterized in that, describedly returns the access control result to Home eNodeB, for:
Return the access control result by the cell in the access control inquiry response messages to femto gateway; Perhaps,
Return the access control result by replying access control inquiry response messages or access control failed message to femto gateway.
12. to 11 each described methods, it is characterized in that according to claim 1 described Home eNodeB is evolved Home eNodeB (HeNB); Accordingly, described femto gateway is evolved femto gateway (HeNB GW).
13. the switched system of a Home eNodeB is characterized in that, this system comprises: source Home eNodeB and femto gateway; Wherein,
The source Home eNodeB is used for sending X2 handover request message to femto gateway;
Femto gateway, after being used for receiving the X2 handover request message of source Home eNodeB transmission, judge whether the source Home eNodeB is identical with the CSG ID of target Home eNodeB, and according to judged result, execution is carried out corresponding handover operation based on the handover operation of X2 interface or according to the access control result of the MME that obtains.
14. system according to claim 13 is characterized in that, this system further comprises: UE is used for sending measurement report to the source Home eNodeB;
Described source Home eNodeB after also being used for receiving the measurement report of UE transmission, determines to switch.
15. system according to claim 13, it is characterized in that, described femto gateway also was used for setting up process at X2 before whether the CSG ID that judges Home eNodeB and target Home eNodeB is identical, knew and preserved and the CSG ID that self sets up all Home eNodeB that X2 is connected.
16. system according to claim 15, it is characterized in that, described femto gateway is when whether the CSG ID that judges source Home eNodeB and target Home eNodeB is identical, also be used for the CGI according to the Target cell of the CGI of cell-of-origin and the X2 handover request message received, from the CGI that self preserves, obtain the CSG ID of source Home eNodeB and target Home eNodeB.
17. system according to claim 13, it is characterized in that, this system further comprises MME, after being used for receiving the access control apply for information of femto gateway transmission, the CSG subscription information of the CSG ID in the access control apply for information and self storage is mated, and according to matching result, determine the access control result, and return the access control result by the S1 interface to femto gateway;
Described femto gateway is carried out before the corresponding handover operation in the access control result according to the MME that obtains, and also is used for sending the access control apply for information by the S1 interface to MME; And receive the access control result that MME returns.
18. to 17 each described systems, it is characterized in that according to claim 13 described Home eNodeB is HeNB; Accordingly, described femto gateway is HeNB GW.
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