CN102917419A - Switching operation method and switching operation system - Google Patents
Switching operation method and switching operation system Download PDFInfo
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- CN102917419A CN102917419A CN2011102193664A CN201110219366A CN102917419A CN 102917419 A CN102917419 A CN 102917419A CN 2011102193664 A CN2011102193664 A CN 2011102193664A CN 201110219366 A CN201110219366 A CN 201110219366A CN 102917419 A CN102917419 A CN 102917419A
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- access control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
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Abstract
The invention discloses a switching operation method and a switching operation system. The method includes: a source base station sends a switching request message to a target home base station through an X2 interface; the target home base station receives the switching request message and then triggers an MME (mobility management entity) to execute access control judgment of switching operation; and the MME controls the switching operation according to results of the access control judgment. By the aid of the switching operation method and the switching operation system, the target home base station can trigger the MME to execute access control judgment of the switching operation, and accordingly signaling needed to be transmitted through a core network can be reduced.
Description
Technical field
The present invention relates to radio honeycomb communication system, refer to especially a kind of handover operation method and system.
Background technology
Home eNodeB (HeNB, Home eNB) is a kind of small-sized, lower powered base station, is deployed in the indoor places such as family and office.The Main Function of Home eNodeB is in order higher service rate to be provided to the user and to reduce and use the needed expense of high rate services, remedying simultaneously the deficiency that existing distributed cellular radio communication system covers.
Home base station network framework in senior Long Term Evolution (LTE, the Long Term Evolution) system that third generation partnership project (3GPP, Third Generation Partnership Projects) is released as shown in Figure 1.Wherein, core network element comprises mobile management entity (MME, Mobile Management Entity) and gateway (S-GW, Serving Gateway).MME is bearing the relevant function of mobile management of subscriber equipment (UE, User Equipment).S-GW is bearing the data route processing of user's face, and termination is in the downlink data of idle condition UE, the functions such as carrying (ERAB, E-UTRAN Radio Access Bearer) context of management and storage UE.Evolution Access Network (E-UTRAN, Evolved Universal Terrestrial Radio Access Network) is to be made of HeNB and femto gateway (HeNB GW, HeNB Gateway).HeNB finishes with core network element based on the core network interface agreement that defines in the standard and is connected, based on the interface protocol access UE that eats dishes without rice or wine that defines in the standard.To a great extent, the function born of HeNB and common macro base station (Macro eNB) does not have difference.Planning demand Network Based under some deployment scenario, also may be introduced new network element a: HeNBGW between HeNB and the core network element, HeNB GW can bear the Home eNodeB management function of part.
Switching for UE under the LTE system in the existing 3GPP standard agreement has defined two kinds of handover operation flow processs: based on the switching flow of S1 interface and based on the switching flow of X2 interface; Fig. 2 and Fig. 3 have provided respectively UE based on S1 interface and the handover operation flow process that switches to Home eNodeB based on X2 interface.Based on the description in the standard document as can be known, carrying out the X2 handover operation need to meet the following conditions: UE switches between cell-of-origin and Target cell does not need MME to carry out the access control operation.When UE switches to home base station cells, the condition that can carry out the X2 handover operation is further defined to: source base station (can be common macro base station, also can be Home eNodeB) closed user group sign (the CSG ID that is configured of residential quarter (being the cell-of-origin) and Target cell (being Target cell), Close Subscriber Group Identifier) identical, perhaps Target cell is open cut-in operation pattern.
Shown in the operating process among Fig. 2 and Fig. 3, the employed signaling great majority of X2 handover operation flow process transmit based on X2 interface, and with respect to S1 handover operation flow process, X2 handover operation flow process can allow handover operation finish faster.Operating process from Fig. 2 can be seen, existing S1 switching flow is (can be eNB by source base station, also can be HeNB) side triggers MME and carries out the access control decision operation that UE switches to the target home base station cells, and by MME court verdict is notified to the target Home eNodeB to continue to finish follow-up handover operation.Analyze further and can see, all being based on the S1 interface based on the signaling of S1 handover operation flow process transmits, and the S1 handover operation flow process in the existing system is to send switching demand (Handover Required) message by source base station to carry out the switching access control to MME to trigger MME, but be the access control that triggers in the MME execution handover operation process equally, carry out the switching access control if trigger MME by target Home eNodeB side, then can finish needed signalling in the handover operation process in conjunction with X2 interface and S1 interface, can reduce the signaling that needs through the core net transmission with respect to the signalling in the existing S1 handover operation process, but, also do not have a kind of technological means to support the realization of this handover operation mode at present.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of handover operation method and system, can realize that triggering MME by target Home eNodeB side carries out the judgement of switching access control, finishes signalling required in the handover operation process in conjunction with X2 interface and S1 interface.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of handover operation method, the method comprises:
Source base station sends handover request message by X2 interface to the target Home eNodeB;
After described target Home eNodeB receives described handover request message, trigger the access control judgement that mobile management entity (MME) is carried out handover operation;
Described MME controls handover operation according to the result of described access control judgement.
Wherein, comprise in the described handover request message: the global unique identification GUMMEI of described MME and UE during based on described source base station access network described MME be the service identifiers that UE distributes.
After described target Home eNodeB received described handover request message, the method further comprised:
Described target Home eNodeB judges whether to need to trigger the access control judgement that described MME carries out handover operation; The Target cell that Radix Angelicae Sinensis belongs to described target Home eNodeB and described Target cell not identical with the CSG ID of the cell-of-origin that belongs to described source base station is during for open cut-in operation pattern, and judging needs to trigger the access control judgement that described MME carries out handover operation.
Target BS triggers the access control judgement that MME carries out handover operation by the S1 interface, for:
Described target Home eNodeB switches access control request message by the S1 interface to the described MME transmission of correspondence according to the described GUMMEI that comprises in the described handover request message.
Described switching access control request message comprises at least: described UE during based on described source base station access network described MME be that the service identifiers that distributes of UE, CSG ID and the described target Home eNodeB of described target Home eNodeB are the service identifiers eNB UE S1AP ID that UE distributes.
When the opposite end network element that described target Home eNodeB connects by the S1 interface is HeNB GW, further comprise described GUMMEI in the described switching access control request message;
Described Target cell is when mixing the cut-in operation pattern, and described switching access control request message further comprises the cut-in operation pattern indication of Target cell.
After described MME receives described switching access control request message, carry out described access control judgement, comprising:
Described MME judges whether to allow UE to switch to described Target cell;
Judge when allowing UE to switch to described Target cell, judge whether UE switches to described Target cell with member's identity;
Accordingly, when allowing UE to switch to Target cell, the result of described access control judgement comprises: permission UE switches to Target cell and whether UE switches to Target cell with member's identity;
When not allowing UE to switch to Target cell, the result of described access control judgement comprises: do not allow UE to switch to Target cell.
When allowing UE to switch to Target cell, described MME controls handover operation according to the result of described access control judgement, comprising:
Described MME sends by the S1 interface and switches the access control response message to described target Home eNodeB; Described switching access control response message comprises: described MME is the service identifiers that UE distributes when needing to switch to the radio bearer tabulation of target Home eNodeB and UE based target Home eNodeB access network in the radio bearer that the UE that the result of access control judgement, MME determine has set up;
After described target Home eNodeB receives described switching access control response message, according to the current resource status of result, the tabulation of described radio bearer, the target Home eNodeB of described access control judgement and the handover decision mechanism of system configuration, determine to allow in the tabulation of described radio bearer to switch to the set of the radio bearer of target Home eNodeB; And the handover request ack message that sends the set carry described radio bearer by X2 interface is to described source base station;
After described source base station received described handover request ack message, according to the set of described radio bearer, control UE switched to Target cell from the cell-of-origin.
When not allowing UE to switch to Target cell, described MME controls handover operation according to the result of described access control judgement, comprising:
MME sends switching access control refuse information by the S1 interface or carries and indicate the switching access control response message that switches unaccepted information to the target Home eNodeB;
Described target Home eNodeB receive described switching access control refuse information or described carry the switching access control response message that indication switches unaccepted information after, send the handover request refuse information by X2 interface to described source base station, and stop handover operation;
After described source base station receives described handover request refuse information, judge that UE is rejected to the handover request of described Target cell.
When not allowing UE to switch to Target cell, described MME controls handover operation according to the result of described access control judgement, comprising:
MME sends switching access control refuse information by the S1 interface or carries and indicate the switching access control response message that switches unaccepted information to the target Home eNodeB; Simultaneously, send indication UE to source base station and switch to the unaccepted message of Target cell;
Described target Home eNodeB stops handover operation after receiving described switching access control refuse information or carrying the switching access control response message of the unaccepted information of indication switching;
After described source base station receives and indicates UE to switch to the unaccepted message of Target cell, judge that UE is unsuccessful to the switching of described Target cell.
The present invention also provides a kind of switching operating system, comprises source base station, target Home eNodeB and MME, wherein:
Described source base station is used for sending handover request message by X2 interface to described target Home eNodeB;
Described target Home eNodeB is used for after receiving described handover request message, triggers the access control judgement that described MME carries out handover operation;
Described MME is used for carrying out described access control judgement, and according to the result of described access control judgement handover operation is controlled.
Wherein, described target Home eNodeB is further used for judging whether to need to trigger the access control judgement that described MME carries out handover operation; The Target cell that Radix Angelicae Sinensis belongs to described target Home eNodeB and described Target cell not identical with the CSG ID of the cell-of-origin that belongs to described source base station is during for open cut-in operation pattern, and judging needs to trigger the access control judgement that described MME carries out handover operation.
Described target Home eNodeB, be further used for the global unique identification GUMMEI according to the described MME that comprises in the described handover request message, switch the access control request message by the S1 interface to the described MME transmission of correspondence, trigger the access control judgement that described MME carries out handover operation.
Described MME when carrying out described access control judgement, is further used for judging whether to allow UE to switch to Target cell; Judge when allowing UE to switch to Target cell, judge whether UE switches to Target cell with member's identity.
The method and system of handover operation of the present invention makes source base station send handover request message by X2 interface to the target Home eNodeB; After the target Home eNodeB receives handover request message, trigger the access control judgement of the serving MME execution handover operation of UE by the S1 interface; Serving MME is controlled handover operation according to the result of access control judgement.So, realized that triggering MME by target Home eNodeB side carries out the judgement of switching access control, finish signalling required in the handover operation process in conjunction with X2 interface and S1 interface, can reduce the signaling that needs through the core net transmission with respect to the signalling in the existing S1 handover operation process.
Description of drawings
Fig. 1 is the home base station network structure chart;
Fig. 2 is UE switches to home base station cells based on S1 handover operation flow process schematic diagram;
Fig. 3 is UE switches to home base station cells based on X2 handover operation flow process schematic diagram;
Fig. 4 is handover operation schematic flow sheet of the present invention;
Fig. 5 is the handover operation schematic flow sheet that the embodiment of the invention one allows UE to switch;
Fig. 6 is the handover operation schematic flow sheet that the embodiment of the invention two does not allow UE to switch;
Fig. 7 is the handover operation schematic flow sheet that the embodiment of the invention three does not allow UE to switch.
Embodiment
In order to realize that triggering MME by target Home eNodeB side carries out the switching access control, finish signalling required in the handover operation process in conjunction with X2 interface and S1 interface, the present invention proposes a kind of new handover operation method, the basic thought of the method is: source base station sends a handover request to the target Home eNodeB based on X2 interface, the target Home eNodeB is carried out the access control judgement that UE switches to the target home base station cells based on S1 interface requests MME, and MME is based on the follow-up handover operation of output control of access control judgement.As shown in Figure 4, the method comprises:
Source base station judges that the MME (abbreviation serving MME) that serves as UE in the handover operation process in the time of can not changing, sends handover request message by X2 interface to the target Home eNodeB;
Comprise in this handover request message: the global unique identification GUMMEI of the serving MME of UE during based on the source base station access network and UE during based on the source base station access network serving MME be the service identifiers that UE distributes.
After the target Home eNodeB receives handover request message, judge whether to need to trigger the access control judgement that MME carries out handover operation; The Target cell that Radix Angelicae Sinensis belongs to the target Home eNodeB and Target cell not identical with the CSG ID of the cell-of-origin that belongs to source base station is during for open cut-in operation pattern, and judging needs to trigger the access control judgement that MME carries out handover operation.
The target Home eNodeB switches access control request message by the S1 interface to the MME transmission of correspondence according to the GUMMEI that comprises in the handover request message, triggers the access control judgement that MME carries out handover operation.
This switching access control request message comprises at least: UE during based on the source base station access network MME be that the service identifiers that distributes of UE, CSG ID and the target Home eNodeB of Target cell are the service identifiers eNB UE S1AP ID that UE distributes.
When the opposite end network element that the target Home eNodeB connects by the S1 interface is HeNB GW, further comprise GUMMEI in the switching access control request message;
Target cell is when mixing the cut-in operation pattern, switches the cut-in operation pattern indication that the access control request message further comprises Target cell.
After MME receives and switches the access control request message, carry out the access control judgement, comprising:
MME judges whether to allow UE to switch to Target cell;
Judge when allowing UE to switch to Target cell, judge whether UE switches to Target cell with member's identity;
Accordingly, when allowing UE to switch to Target cell, the result of access control judgement comprises: permission UE switches to Target cell and whether UE switches to Target cell with member's identity;
When not allowing UE to switch to Target cell, the result of access control judgement comprises: do not allow UE to switch to Target cell.
When allowing UE to switch to Target cell, MME carries out following operation according to the result of access control judgement, comprising:
MME sends by the S1 interface and switches the access control response message to the target Home eNodeB; Switching the access control response message comprises: MME is the service identifiers that UE distributes when needing to switch to the radio bearer tabulation of target BS and UE based target Home eNodeB access network in the radio bearer that the UE that the result of access control judgement, MME determine has set up;
After the target Home eNodeB receives and switches the access control response message, according to the current resource status of result, the tabulation of radio bearer, the target Home eNodeB of access control judgement and the handover decision mechanism of system configuration, determine to allow in the tabulation of radio bearer to switch to the set of the radio bearer of target BS; And the handover request ack message that sends the set carry radio bearer by X2 interface is to source base station;
After source base station received handover request ack message, according to the set of radio bearer, control UE switched to Target cell from the cell-of-origin.
When not allowing UE to switch to Target cell, MME carries out following operation according to the result of access control judgement, comprising:
MME sends switching access control refuse information by the S1 interface or carries and indicate the switching access control response message that switches unaccepted information to the target Home eNodeB;
The target Home eNodeB stops handover operation, and sends the handover request refuse information by X2 interface to source base station after receiving and switching the access control refuse information or carry the switching access control response message of the unaccepted information of indication switching;
After source base station receives the handover request refuse information, judge that UE is unsuccessful to the switching of Target cell.
When not allowing UE to switch to Target cell, MME carries out following operation according to the result of access control judgement, comprising:
MME sends switching access control refuse information by the S1 interface or carries and indicate the switching access control response message that switches unaccepted information to the target Home eNodeB; Simultaneously, send indication UE to source base station and switch to the unaccepted message of Target cell;
The target Home eNodeB stops handover operation after receiving and switching the access control refuse information or carry the switching access control response message of the unaccepted information of indication switching;
Source base station judges that UE is unsuccessful to the switching of Target cell after receiving and indicating UE to switch to the unaccepted message of Target cell.
Below by specific embodiment handover operation method of the present invention is described.
Handover operation described in the present invention refers to the handover operation of UE from the cell-of-origin to the Target cell.
Embodiment one
Among this embodiment, trigger the access control judgement that MME carries out handover operation by target Home eNodeB side, improve the performance of handover operation flow process with this, the result of in this embodiment access control judgement is for allowing UE to switch to target home base station cells (being Target cell).
As shown in Figure 5, this switching flow comprises:
Step 501～502, source base station carries out the handover operation of UE based on the measurement report decision-making of the UE that receives, and the target Home eNodeB under the Target cell of determining to switch.
Source base station judges that the mobile management entity (MME) (abbreviation serving MME) as the UE service can not change in the handover operation process, and then source base station sends handover request message by X2 interface to the target Home eNodeB, and namely execution in step 503.
Step 503, source base station by and the target Home eNodeB between the target Home eNodeB of X2 interface under the Target cell send handover request (HO Request) message, the global unique identification of the serving MME when carrying UE based on the source base station access network in this message: GUMMEI and UE during based on the source base station access network serving MME be the service identifiers MME UE S1AP ID that UE distributes.
Step 504, the target Home eNodeB is carried out following decision operation after receiving this handover request message: judge whether to need to trigger the access control judgement that serving MME is carried out handover operation, it is concrete: if the CSG ID of Target cell and cell-of-origin is identical or Target cell is opening cut-in operation pattern, then according to the handover request message of the X2 handover operation flow process response source base station that defines in the existing standard, finish follow-up handover operation flow process; Otherwise execution in step 505;
Step 505, if the CSG ID of Target cell and cell-of-origin is not identical and Target cell is not open cut-in operation pattern, the target Home eNodeB is judged so needs to trigger the access control judgement that serving MME is carried out handover operation, at this moment, the target Home eNodeB switches access control request (HO Access Control Request) message by the S1 interface to MME (being the serving MME of the UE) transmission of correspondence according to the GUMMEI that comprises in the handover request message.
Switch and comprise at least following information in the access control request message: the serving MME that the target Home eNodeB obtains from handover request message is that the service identifiers MME UE S1AP ID of UE distribution, CSG ID and the target Home eNodeB of target Home eNodeB are the service identifiers eNB S1AP ID that UE distributes;
Further, the target Home eNodeB is when sending switching access control request message, if it is HeNB GW by the opposite end network element that the S1 interface connects, so also need in switching the access control request message, to carry the global unique identification of the serving MME of UE: GUMMEI.
Further, if Target cell is for mixing the cut-in operation pattern, then also need in switching the access control request message, carry the cut-in operation pattern indication of Target cell; Be operated in sealing cut-in operation pattern for Target cell, can adopt the processing mode of saving signaling consumption: if switch the cut-in operation pattern indication of not carrying Target cell in the access control request message, this message namely implies and indicates Target cell in sealing cut-in operation pattern so.Should be appreciated that other allows the network element that receives this switching access control request message can infer that the processing mode of Target cell cut-in operation pattern can use.
Step 506, when switching access control request message arrival serving MME, serving MME can be searched based on the MME UE S1AP ID that comprises in this message the context of corresponding UE, and the context of MME UE S1AP ID by UE identified mapping, determines corresponding UE sign, such as IMSI etc.; The UE that obtains according to mapping identifies the CSG information of obtaining UE from core net;
The access control judgement of the handover operation that serving MME is carried out comprises: serving MME judges whether to allow UE to switch to Target cell based on the CSG log-on message of UE, the CSG ID of target Home eNodeB and the cut-in operation pattern of Target cell; Further, when allowing UE to switch to Target cell, determine member's identity information of UE, namely judge whether UE switches to Target cell with member's identity; And need to switch to the radio bearer tabulation of target Home eNodeB in the radio bearer set up of definite UE.Herein, the specific implementation of the access control of the handover operation that serving MME is carried out judgement is prior art, repeats no more.
Step 507, serving MME is after the access control judgement of finishing handover operation, send switching access control response (HO Access Control ACK) message to the target Home eNodeB by the S1 interface, in this message, carry the result of access control judgement, need to switch to the radio bearer tabulation of target BS in the radio bearer that the UE that serving MME is determined has set up, and during UE based target Home eNodeB access network serving MME be the service identifiers MME UE S1AP ID that distributes of UE (value of this MME UE S1AP ID can be with UE during based on the source base station access network serving MME be that the value of the service identifiers MMEUE S1AP ID that distributes of UE is identical, also can be different).
Wherein, in this embodiment, the result of access control judgement comprises: UE can switch to member's identity information that Target cell and UE switch to Target cell (be UE with member's identity or do not switch to Target cell with member's identity).
Step 508, after the target Home eNodeB receives above-mentioned switching access control response message, need to switch to the current resource status of tabulation, the target Home eNodeB of radio bearer of target BS and the handover decision mechanism of system configuration in the radio bearer of having set up based on the result of access control judgement in this message, UE that serving MME is determined, determine to allow in the tabulation of above-mentioned radio bearer to switch to the set of the radio bearer of target Home eNodeB.
Then, the target Home eNodeB sends handover request ack message (HO REQUEST ACK) message to source base station by X2 interface, and the set of the above-mentioned radio bearer that allows to switch to the target Home eNodeB that carries in this message that the target Home eNodeB determines and target Home eNodeB are the service identifiers eNB UE X2AP ID on the X2 interface that distributes of UE.
Step 509, after source base station receives handover request ack message, based on the relevant result of the switching that comprises in this message, comprise: the set and the UE that allow to switch to the radio bearer of target BS switch the required wireless parameter of access Target cell etc., and control UE switches to Target cell from the cell-of-origin.
Step 510, when UE finish switch to Target cell required synchronously and after switching the relevant operation that networks, the target Home eNodeB can be to serving MME transmit path conversion request message (Path Switch Request), and the content that comprises in this message encapsulates according to the X2 handover operation flow process of describing in the existing standard.
Subsequent step 511～514 is finished according to the X2 handover operation flow process that defines in the standard.
Embodiment two
Among this embodiment, trigger the access control judgement that MME carries out handover operation by target Home eNodeB side, improve the performance of handover operation flow process with this, the result of in this embodiment access control judgement switches to Target cell for refusal UE.Shown in 6, this flow process comprises as shown:
The realization of step 601～606 repeats no more with step 501～506 herein.
Step 607, what describe in the present embodiment is the unaccepted scene of handover operation, therefore, the structure of the access control judgement of carrying out when serving MME is UE can not switch to Target cell the time, and serving MME can send by the S1 interface switches access control refusal (HO Access Control Reject) message to the target Home eNodeB;
After step 608, target Home eNodeB receive and switch the access control refuse information, send handover request refusal (HO Reject) message by X2 interface to the source base station of initiating handover operation, and stop handover operation.Carry the target Home eNodeB in this handover request refuse information and be the service identifiers eNB UE X2AP ID on the X2 interface that UE distributes.
After source base station receives the handover request refuse information, judge that UE is unsuccessful to the switching of this Target cell, so select new Target cell with and affiliated target Home eNodeB.
Wherein, the switching access control refuse information of serving MME transmission also can be the switching access control response message that has carried the unaccepted information of indication switching.
Embodiment three
Among this embodiment, trigger the access control judgement that MME carries out handover operation by target Home eNodeB side, improve the performance of handover operation flow process with this, the result of in this embodiment access control judgement switches to Target cell for refusal UE.
As shown in Figure 7, the flow process of this flow process and Fig. 6 is basic identical, and different is:
Step 707, the structure of the access control judgement of carrying out when serving MME are UE can not switch to Target cell the time, and serving MME can send by the S1 interface switches access control refusal (HO Access Control Reject) message to the target Home eNodeB; Serving MME sends indication UE to source base station and switches to the unaccepted message of Target cell simultaneously, and serving MME is that service identifiers MME UE S1AP ID and source base station that UE distributes are the service identifiers eNB UE S1AP ID that UE distributes when comprising UE by the source base station access network in this message.
The target Home eNodeB can stop handover operation after receiving and switching the access control refuse information; After source base station receives indication UE switches to the unaccepted message of Target cell, judge that UE is unsuccessful to the switching of this Target cell, so select new Target cell with and affiliated target Home eNodeB.
Wherein, the switching access control refuse information of serving MME transmission also can be the switching access control response message that has carried the unaccepted information of indication switching.
In order to realize the method for above-mentioned handover operation, the present invention also provides a kind of switching operating system, comprises source base station, target Home eNodeB and serving MME, wherein:
Source base station is used for sending handover request message by X2 interface to the target Home eNodeB;
The target Home eNodeB is used for after receiving handover request message, triggers the access control judgement that MME carries out handover operation;
Serving MME is used for carrying out the access control judgement, and according to the result of access control judgement handover operation is controlled.
Wherein, the target Home eNodeB is further used for judging whether to need to trigger the access control judgement that MME carries out handover operation; The Target cell that Radix Angelicae Sinensis belongs to the target Home eNodeB and Target cell not identical with the CSG ID of the cell-of-origin that belongs to source base station is during for open cut-in operation pattern, and judging needs to trigger the access control judgement that MME carries out handover operation.
The target Home eNodeB is further used for the global unique identification GUMMEI according to the MME that comprises in the handover request message, switches the access control request message by the S1 interface to the MME transmission of correspondence, triggers the access control judgement that MME carries out handover operation.
MME when carrying out the access control judgement, is further used for judging whether to allow UE to switch to Target cell; Judge when allowing UE to switch to Target cell, judge whether UE switches to Target cell with member's identity.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (14)
1. handover operation method is characterized in that the method comprises:
Source base station sends handover request message by X2 interface to the target Home eNodeB;
After described target Home eNodeB receives described handover request message, trigger the access control judgement that mobile management entity (MME) is carried out handover operation;
Described MME controls handover operation according to the result of described access control judgement.
2. described handover operation method according to claim 1 is characterized in that,
Comprise in the described handover request message: the global unique identification GUMMEI of described MME and UE during based on described source base station access network described MME be the service identifiers that UE distributes.
3. described handover operation method according to claim 2 is characterized in that after described target Home eNodeB received described handover request message, the method further comprised:
Described target Home eNodeB judges whether to need to trigger the access control judgement that described MME carries out handover operation; The Target cell that Radix Angelicae Sinensis belongs to described target Home eNodeB and described Target cell not identical with the CSG ID of the cell-of-origin that belongs to described source base station is during for open cut-in operation pattern, and judging needs to trigger the access control judgement that described MME carries out handover operation.
4. described handover operation method according to claim 3 is characterized in that, target BS triggers the access control judgement that MME carries out handover operation by the S1 interface, for:
Described target Home eNodeB switches access control request message by the S1 interface to the described MME transmission of correspondence according to the described GUMMEI that comprises in the described handover request message.
5. described handover operation method according to claim 4, it is characterized in that described switching access control request message comprises at least: described UE during based on described source base station access network described MME be that the service identifiers that distributes of UE, CSG ID and the described target Home eNodeB of described target Home eNodeB are the service identifiers eNB UE S1AP ID that UE distributes.
6. described handover operation method according to claim 5 is characterized in that,
When the opposite end network element that described target Home eNodeB connects by the S1 interface is HeNB GW, further comprise described GUMMEI in the described switching access control request message;
Described Target cell is when mixing the cut-in operation pattern, and described switching access control request message further comprises the cut-in operation pattern indication of Target cell.
7. according to claim 5 or 6 described handover operation methods, it is characterized in that, after described MME receives described switching access control request message, carry out described access control judgement, comprising:
Described MME judges whether to allow UE to switch to described Target cell;
Judge when allowing UE to switch to described Target cell, judge whether UE switches to described Target cell with member's identity;
Accordingly, when allowing UE to switch to Target cell, the result of described access control judgement comprises: permission UE switches to Target cell and whether UE switches to Target cell with member's identity;
When not allowing UE to switch to Target cell, the result of described access control judgement comprises: do not allow UE to switch to Target cell.
8. described handover operation method according to claim 7 is characterized in that, when allowing UE to switch to Target cell, described MME controls handover operation according to the result of described access control judgement, comprising:
Described MME sends by the S1 interface and switches the access control response message to described target Home eNodeB; Described switching access control response message comprises: described MME is the service identifiers that UE distributes when needing to switch to the radio bearer tabulation of target Home eNodeB and UE based target Home eNodeB access network in the radio bearer that the UE that the result of access control judgement, MME determine has set up;
After described target Home eNodeB receives described switching access control response message, according to the current resource status of result, the tabulation of described radio bearer, the target Home eNodeB of described access control judgement and the handover decision mechanism of system configuration, determine to allow in the tabulation of described radio bearer to switch to the set of the radio bearer of target Home eNodeB; And the handover request ack message that sends the set carry described radio bearer by X2 interface is to described source base station;
After described source base station received described handover request ack message, according to the set of described radio bearer, control UE switched to Target cell from the cell-of-origin.
9. described handover operation method according to claim 7 is characterized in that, when not allowing UE to switch to Target cell, described MME controls handover operation according to the result of described access control judgement, comprising:
MME sends switching access control refuse information by the S1 interface or carries and indicate the switching access control response message that switches unaccepted information to the target Home eNodeB;
Described target Home eNodeB receive described switching access control refuse information or described carry the switching access control response message that indication switches unaccepted information after, send the handover request refuse information by X2 interface to described source base station, and stop handover operation;
After described source base station receives described handover request refuse information, judge that UE is rejected to the handover request of described Target cell.
10. described handover operation method according to claim 7 is characterized in that, when not allowing UE to switch to Target cell, described MME controls handover operation according to the result of described access control judgement, comprising:
MME sends switching access control refuse information by the S1 interface or carries and indicate the switching access control response message that switches unaccepted information to the target Home eNodeB; Simultaneously, send indication UE to source base station and switch to the unaccepted message of Target cell;
Described target Home eNodeB stops handover operation after receiving described switching access control refuse information or carrying the switching access control response message of the unaccepted information of indication switching;
After described source base station receives and indicates UE to switch to the unaccepted message of Target cell, judge that UE is unsuccessful to the switching of described Target cell.
11. a switching operating system is characterized in that, comprises source base station, target Home eNodeB and MME, wherein:
Described source base station is used for sending handover request message by X2 interface to described target Home eNodeB;
Described target Home eNodeB is used for after receiving described handover request message, triggers the access control judgement that described MME carries out handover operation;
Described MME is used for carrying out described access control judgement, and according to the result of described access control judgement handover operation is controlled.
12. described switching operating system is characterized in that according to claim 11,
Described target Home eNodeB is further used for judging whether to need to trigger the access control judgement that described MME carries out handover operation; The Target cell that Radix Angelicae Sinensis belongs to described target Home eNodeB and described Target cell not identical with the CSG ID of the cell-of-origin that belongs to described source base station is during for open cut-in operation pattern, and judging needs to trigger the access control judgement that described MME carries out handover operation.
13. described switching operating system according to claim 12, it is characterized in that, described target Home eNodeB, be further used for the global unique identification GUMMEI according to the described MME that comprises in the described handover request message, switch the access control request message by the S1 interface to the described MME transmission of correspondence, trigger the access control judgement that described MME carries out handover operation.
14. described switching operating system is characterized in that according to claim 12,
Described MME when carrying out described access control judgement, is further used for judging whether to allow UE to switch to Target cell; Judge when allowing UE to switch to Target cell, judge whether UE switches to Target cell with member's identity.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102193664A CN102917419A (en) | 2011-08-02 | 2011-08-02 | Switching operation method and switching operation system |
| PCT/CN2012/073612 WO2012155713A1 (en) | 2011-08-02 | 2012-04-06 | Switching operation method and system |
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| CN2011102193664A CN102917419A (en) | 2011-08-02 | 2011-08-02 | Switching operation method and switching operation system |
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| CN109526010A (en) * | 2019-01-02 | 2019-03-26 | 广州汇智通信技术有限公司 | A kind of communication system switching optimization method and system |
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| WO2012155713A1 (en) | 2012-11-22 |
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