CN102076039A - Method and device for transmitting switching information - Google Patents
Method and device for transmitting switching information Download PDFInfo
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- CN102076039A CN102076039A CN2011100098769A CN201110009876A CN102076039A CN 102076039 A CN102076039 A CN 102076039A CN 2011100098769 A CN2011100098769 A CN 2011100098769A CN 201110009876 A CN201110009876 A CN 201110009876A CN 102076039 A CN102076039 A CN 102076039A
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Abstract
The invention discloses a method for transmitting switching information, which aims to ensure that a home evolved node B (HeNB) acquires switching-related information so as to promote the realization of a switching process. The method comprises the following steps that: a home evolved node B gateway (HeNB GW) acquires the link information of an adjacent node B; and the HeNB GW transmits the acquired link information of the adjacent node B to the HeNB. The invention also discloses a method for switching cells and a device for realizing the method.
Description
Technical field
The present invention relates to the communications field, particularly relate to the method and the device that transmit handover information.
Background technology
Along with popularizing of development of Communication Technique and portable terminal, customer volume and traffic carrying capacity increase rapidly.In order to satisfy user's demand, reduce coverage hole, E-UTRAN (Evolved UTRAN network) network architecture has been proposed in the industry.Shown in Figure 1A, the E-UTRAN network architecture comprises MME (Mobility Management Entity) or S-GW (gateway), eNB (evolution base station), HeNB GW (family's evolution base station gateway) and HeNB (family's evolution base station).It between the eNB X2 interface; It between eNB and the MME S1 interface; HeNB can directly be connected with MME, perhaps is linked into MME by a HeNB GW.HeNB GW is similar to an eNB, has the eNB ID (evolution base station sign) of oneself, can set up X2 interface with other eNB, simultaneously as a special network element, has agent functionality, promptly transmits message between other eNB or MME and the HeNB etc.
The handoff procedure of macro base station in the prior art (as eNB) comprising: the eNB decision is initiated handoff procedure to a UE, find that switching target small area is the sub-district of adjacent eNB, if source eNB has identical serving MME with adjacent eNB, and this MME is the serving MME of this UE, and then source eNB initiates the X2 switching flow to this UE; Otherwise, initiate the S1 switching flow.
Yet, there is not direct interface between HeNB under the HeNB GW and other eNB, and HeNB do not know between the target eNB of HeNB GW and switching whether X2 interface is arranged, and therefore can't determine to initiate S1 and switch and still initiate X2 and switch in handoff procedure, causes realizing switching.
Summary of the invention
The embodiment of the invention provides a kind of method and device that transmits handover information, is used to make HeNB to obtain the information relevant with switching, impels the realization of handoff procedure.
A kind of method of transmitting handover information may further comprise the steps:
The evolution base station gateway HeNB GW of family obtains the link information of adjacent base station;
HeNB GW sends to HeNB with the link information of the adjacent base station of acquisition.
A kind of cell switching method may further comprise the steps:
HeNB determines that needing to initiate the sub-district switches;
HeNB determines the switching type of this UE to target BS according to the link information of the adjacent base station that obtains from HeNB GW and the serving MME of the UE that needs to switch;
HeNB initiates X2 switching or S1 and switches according to the switching type of determining.
A kind of HeNB GW comprises:
Acquisition module is used to obtain the link information of adjacent base station;
Interface module, the link information that is used for the adjacent base station that will obtain sends to HeNB.
A kind of HeNB comprises:
Control module is used for determining needs initiation sub-district switching;
Type block is used for determining the switching type of this UE to target BS according to the link information of the adjacent base station that obtains from HeNB GW and the serving MME of the UE that needs to switch;
Handover module is used for according to the switching type of determining, initiates X2 switching or S1 and switches.
HeNB GW sends to HeNB with the link information of adjacent base station in the embodiment of the invention, makes HeNB to determine switching type according to the link information that obtains, and then helps HeNB to finish handoff procedure.
Description of drawings
Figure 1A is the structure chart of the E-UTRAN network architecture in the prior art;
Figure 1B is the main method flow chart of transmission handover information in the embodiment of the invention;
Fig. 2 is the method flow diagram that transmits handover information in the embodiment of the invention by switch indicating information;
Fig. 3 is the method flow diagram that transmits handover information in the embodiment of the invention by base station configuration updating information;
Fig. 4 is the main method flow chart that switch the sub-district in the embodiment of the invention;
Fig. 5 is the detailed method flow chart that switch the sub-district in the embodiment of the invention;
Fig. 6 is the method flow diagram that switch the sub-district when supporting the CSG sub-district in the embodiment of the invention;
Fig. 7 is the structure chart of HeNB GW in the embodiment of the invention;
Fig. 8 is the primary structure figure of HeNB in the embodiment of the invention;
Fig. 9 is the detailed structure view of HeNB in the embodiment of the invention.
Embodiment
HeNB GW sends to HeNB with the link information of adjacent base station in the embodiment of the invention, makes HeNB to determine switching type according to the link information that obtains, and then helps HeNB to finish handoff procedure.Adjacent base station can be an evolution base station (eNB) etc. in the present embodiment.
Relating to switching of S1 interface and X2 interface in the present embodiment switches.The S1 interface is meant: in LTE (Long Term Evolution) system, connect the interface between RAN (wireless access network) side group station and the core network entity MME.Such as: the interface between macro base station (as eNB) and the MME; Interface between HeNB and HeNB GW and HeNB GW and the MME all is the S1 interface, and the function of S1 interface comprises the UE context management, bearer management, UE mobile management, functions such as configuration information management and transmission.X2 interface is meant: in the LTE system, and the interface between the base station.Such as the X2 interface between the macro base station, the interface between the Home eNodeB HeNB etc.The function of X2 interface comprises UE mobile management, load management, Inter-Cell Interference Coordination etc.
Referring to Figure 1B, the main method flow process of transmission handover information is as follows in the present embodiment:
Step 101:HeNB GW obtains the link information of adjacent base station.Link information comprises at least: with HeNB GW exist X2 interface the base station Base Station Identification and have the Mobility Management Entity MME pond information of the base station of X2 interface with HeNB GW.If system supports CSG (Close Subscriber Group, closed user group) sub-district, link information also comprises: with HeNB GW exist X2 interface eNB the CSG sub-district CSG ID (CSG sign), with HeNB GW exist X2 interface eNB the CSG sub-district ECGI (E-UTRAN Cell Global Identifier, E-UTRAN Cell Global Identity) and have the mode of operation of CSG sub-district of the eNB of X2 interface with HeNB GW.HeNB GW can obtain the link information of all base stations adjacent with self by X2 interface.Adjacent base station in the present embodiment can be an evolution base station (eNB) etc.Adjacent base station is meant the base station that has X2 interface to be connected with HeNB GW in the present embodiment.
Step 102:HeNB GW sends to HeNB with the link information of the adjacent base station of acquisition.Concrete, HeNB GW sends to HeNB by switch indicating information or base station configuration updating information with the link information of the adjacent base station that obtains.
Because step 102 has multiple implementation, introduces in detail below by two embodiment.
Referring to Fig. 2, as follows in the present embodiment by the method flow of switch indicating information transmission handover information:
Step 201:HeNB GW sends the switch indicating information of the link information that carries adjacent base station to HeNB.Switch indicating information is to be the message of link information redetermination of transmission adjacent base station in the present embodiment.Switch indicating information can be S1 interface message or X2 interface message.HeNB GW can at any time send the link information of adjacent base station to HeNB by switch indicating information.
After step 202:HeNB receives, return affirmation response (Response Ack) message to HeNB GW.That is, HeNB GW receives the response message that HeNB sends.
Referring to Fig. 3, as follows in the present embodiment by the method flow of base station configuration updating information transmission handover information:
Step 301:HeNB GW sends the base station configuration updating information of the link information that carries adjacent base station to HeNB.For example, when change took place in the configuration of adjacent base station, HeNB GW sent the base station configuration updating information (eNB configuration update) of the link information that carries adjacent base station to HeNB.Wherein, the link information of the adjacent base station that carries can be the link information partly that changes, and may relate to about a plurality of base stations, or comprise the link information of all adjacent base stations.Base station configuration updating information is an X2 interface message.
After step 302:HeNB receives, return base station configuration updating to HeNB GW and confirm (eNB configuration update Acknowledge) message.That is, HeNB GW receives the response message that HeNB sends.
HeNB can obtain to have with HeNB GW the link information of the adjacent base station of X2 interface by Fig. 2 or flow process shown in Figure 3, and then determines switching type in view of the above in handoff procedure, and finishes handoff procedure.Implementation procedure is referring to the following examples.
The main method flow process of switching referring to sub-district in Fig. 4, the present embodiment is as follows:
Step 401:HeNB determines that needing to initiate the sub-district switches.HeNB can determine that needing to initiate the sub-district switches with reference to information such as current network environment and channel qualities.
Step 402:HeNB determines the switching type of this UE to target BS according to the link information of the adjacent base station that obtains from HeNB GW and the serving MME of the UE that needs to switch.
Step 403:HeNB initiates X2 switching or S1 and switches according to the switching type of determining.
The detailed method flow process of switching referring to sub-district in Fig. 5, the present embodiment is as follows:
Step 501:HeNB determines that needing to initiate the sub-district switches.
Step 502:HeNB judges according to the Base Station Identification of the adjacent base station that obtains from HeNB GW whether X2 interface is arranged between HeNBGW and the target BS, if having, then continues step 503, otherwise continues step 505.
Step 503:HeNB judges with HeNB GW and has the identical MME of serving MME that whether has in the MME pond information of base station of X2 interface with the UE that needs to switch, if having, then continues step 504, otherwise continuation step 505.
Step 504:HeNB determines that switching type is that X2 switches.Continue step 506.
Step 505:HeNB determines that switching type is that S1 switches.Continue step 507.
Step 506:HeNB initiates X2 and switches.That is, HeNB switches generation and sends handoff request according to X2.
Step 507:HeNB initiates S1 and switches.That is, HeNB switches generation and sends handoff request according to S1.
If system supports the CSG sub-district, when determining switching type, need also to consider whether Target cell is the CSG sub-district, and the mode of operation of CSG sub-district.The specific implementation process is referring to the following examples.
The method flow that switch the sub-district when supporting the CSG sub-district in Fig. 6, the present embodiment is as follows:
Step 601:HeNB determines that needing to initiate the sub-district switches.
Step 602:HeNB judges according to the Base Station Identification of the adjacent base station that obtains from HeNB GW whether X2 interface is arranged between HeNBGW and the target BS, if having, then continues step 603, otherwise continues step 606.
Step 603:HeNB judges with HeNB GW and has the identical MME of serving MME that whether has in the MME pond information of base station of X2 interface with the UE that needs to switch, if having, then continues step 604, otherwise continuation step 606.
Step 604:HeNB according to obtain with HeNB GW exist X2 interface eNB the CSG sub-district CSG ID, with HeNB GW exist X2 interface eNB the CSG sub-district ECGI and have the mode of operation of CSG sub-district of the eNB of X2 interface with HeNBGW, whether the Target cell that judge to switch is macrocell or is operated in CSG sub-district under open (open) pattern, if, then continue step 605, otherwise continue step 606.If the CSG ID and the ECGI sub-district pointed that obtain comprise Target cell, determine that then Target cell is the CSG sub-district, if do not comprise, determine that then Target cell is a macrocell.If Target cell is the CSG sub-district, determine the mode of operation of Target cell again, judge whether pattern into open, if, then continue step 605, if not, promptly Target cell is mixed mode or closure (close) pattern, then continues step 606.
Step 605:HeNB determines that switching type is that X2 switches.Continue step 607.
Step 606:HeNB determines that switching type is that S1 switches.Continue step 608.
Step 607:HeNB initiates X2 and switches.That is, HeNB switches generation and sends handoff request according to X2.
Step 608:HeNB initiates S1 and switches.That is, HeNB switches generation and sends handoff request according to S1.
Understood the transmission course and the cell switch process of handover information by above description, this process mainly realizes that by HeNB GW and HeNB internal structure and the function to HeNB GW and HeNB is introduced below.
Referring to Fig. 7, the HeNB GW that is used to transmit handover information in the present embodiment comprises: acquisition module 701 and interface module 702.
The link information that interface module 702 is used for the adjacent base station that will obtain sends to HeNB.Concrete, interface module 702 sends to HeNB by switch indicating information or base station configuration updating information with the link information of the adjacent base station that obtains.Interface module 702 also is used to receive the response message that HeNB sends.
Referring to Fig. 8, HeNB comprises in the present embodiment: control module 801, type block 802 and handover module 803.
HeNB also comprises: interface module 804, and referring to shown in Figure 9.Interface module 804 is used for obtaining from HeNB GW by switch indicating information or base station configuration updating information the link information of adjacent base station.
If system supports the CSG sub-district, link information also comprises: with HeNB GW exist X2 interface eNB the CSG sub-district CSG ID, with HeNB GW exist X2 interface eNB the CSG sub-district ECGI and have the mode of operation of CSG sub-district of the eNB of X2 interface with HeNB GW;
HeNB GW sends to HeNB with the link information of adjacent base station in the embodiment of the invention, makes HeNB to determine switching type according to the link information that obtains, and then helps HeNB to finish handoff procedure.HeNB GW can transmit link information by multiple message in several scenes in the embodiment of the invention, so that HeNB can in time obtain up-to-date link information.The embodiment of the invention also provides the switching flow after HeNB obtains link information, has realized that UE is to the switching of adjacent base station under the HeNB.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1. a method of transmitting handover information is characterized in that, may further comprise the steps:
The evolution base station gateway HeNB GW of family obtains the link information of adjacent base station;
HeNB GW sends to HeNB with the link information of the adjacent base station of acquisition.
2. the method for claim 1 is characterized in that, link information comprises at least: with HeNBGW exist X2 interface the base station Base Station Identification and have the Mobility Management Entity MME pond information of the base station of X2 interface with HeNB GW.
3. method as claimed in claim 2, it is characterized in that link information also comprises: with HeNB GW exist X2 interface eNB the CSG sub-district CSG ID, with HeNB GW exist X2 interface eNB the CSG sub-district ECGI and have the mode of operation of CSG sub-district of the eNB of X2 interface with HeNB GW.
4. the method for claim 1, it is characterized in that HeNB GW comprises the step that the link information of the adjacent base station that obtains sends to HeNB: HeNB GW sends to HeNB by switch indicating information or base station configuration updating information with the link information of the adjacent base station that obtains.
5. the method for claim 1 is characterized in that, also comprises step: HeNB GW receives the response message that HeNB sends.
6. a cell switching method is characterized in that, comprising:
HeNB determines that needing to initiate the sub-district switches;
HeNB determines the switching type of this UE to target BS according to the link information of the adjacent base station that obtains from HeNB GW and the serving MME of the UE that needs to switch;
HeNB initiates X2 switching or S1 and switches according to the switching type of determining.
7. method as claimed in claim 6 is characterized in that, HeNB is the link information that obtains adjacent base station by switch indicating information or base station configuration updating information from HeNB GW.
8. method as claimed in claim 6 is characterized in that link information comprises at least: with HeNBGW exist X2 interface the base station Base Station Identification and have the Mobility Management Entity MME pond information of the base station of X2 interface with HeNB GW;
HeNB is according to the link information of the adjacent base station that obtains from HeNB GW and the serving MME of the UE that needs to switch, determine that this UE comprises to the step of the switching type of target BS: HeNB judges according to the Base Station Identification of the adjacent base station that obtains from HeNBGW whether X2 interface is arranged between HeNB GW and the target BS, and there are the identical MME of serving MME that whether has in the MME pond information of base station of X2 interface with the UE that needs to switch in judgement and HeNB GW, if judged result is and is, determine that then switching type is that X2 switches, otherwise determine that switching type is that S1 switches.
9. method as claimed in claim 8, it is characterized in that, when system supported the CSG sub-district, link information also comprised: with HeNB GW exist X2 interface eNB the CSG sub-district CSG ID, with HeNB GW exist X2 interface eNB the CSG sub-district ECGI and have the mode of operation of CSG sub-district of the eNB of X2 interface with HeNB GW;
If judged result is and is, then according to HeNB GW exist X2 interface eNB the CSG sub-district CSG ID, with HeNB GW exist X2 interface eNB the CSG sub-district ECGI and have the mode of operation of CSG sub-district of the eNB of X2 interface with HeNBGW, whether the Target cell that judge to switch is macrocell or is operated in CSG sub-district under the open open pattern, if, determine that then switching type is that X2 switches, otherwise determine that switching type is that S1 switches.
10. a HeNB GW is characterized in that, comprises
Acquisition module is used to obtain the link information of adjacent base station;
Interface module, the link information that is used for the adjacent base station that will obtain sends to HeNB.
11. HeNB GW as claimed in claim 10 is characterized in that link information comprises at least: with HeNB GW exist X2 interface the base station Base Station Identification and have the Mobility Management Entity MME pond information of the base station of X2 interface with HeNB GW.
12. HeNB GW as claimed in claim 11, it is characterized in that link information also comprises: with HeNB GW exist X2 interface eNB the CSG sub-district CSG ID, with HeNB GW exist X2 interface eNB the CSG sub-district ECGI and have the mode of operation of CSG sub-district of the eNB of X2 interface with HeNB GW.
13. HeNB GW as claimed in claim 10 is characterized in that, interface module sends to HeNB by switch indicating information or base station configuration updating information with the link information of the adjacent base station that obtains.
14. HeNB GW as claimed in claim 10 is characterized in that, interface module also is used to receive the response message that HeNB sends.
15. a HeNB is characterized in that, comprising:
Control module is used for determining needs initiation sub-district switching;
Type block is used for determining the switching type of this UE to target BS according to the link information of the adjacent base station that obtains from HeNB GW and the serving MME of the UE that needs to switch;
Handover module is used for according to the switching type of determining, initiates X2 switching or S1 and switches.
16. HeNB as claimed in claim 15 is characterized in that, also comprises: interface module obtains the link information of adjacent base station from HeNB GW by switch indicating information or base station configuration updating information.
17. HeNB as claimed in claim 15 is characterized in that, link information comprises at least: with HeNB GW exist X2 interface the base station Base Station Identification and have the Mobility Management Entity MME pond information of the base station of X2 interface with HeNB GW;
Type block judges according to the Base Station Identification of the adjacent base station that obtains from HeNB GW whether X2 interface is arranged between HeNB GW and the target BS, and there are the identical MME of serving MME that whether has in the MME pond information of base station of X2 interface with the UE that needs to switch in judgement and HeNB GW, if judged result is and is, determine that then switching type is that X2 switches, otherwise determine that switching type is that S1 switches.
18. HeNB as claimed in claim 17, it is characterized in that, when system supported the CSG sub-district, link information also comprised: with HeNB GW exist X2 interface eNB the CSG sub-district CSG ID, with HeNB GW exist X2 interface eNB the CSG sub-district ECGI and have the mode of operation of CSG sub-district of the eNB of X2 interface with HeNB GW;
Type block is if judged result is and is, then according to HeNB GW exist X2 interface eNB the CSG sub-district CSG ID, with HeNB GW exist X2 interface eNB the CSG sub-district ECGI and have the mode of operation of CSG sub-district of the eNB of X2 interface with HeNB GW, whether the Target cell that judge to switch is macrocell or is operated in CSG sub-district under the open open pattern, if, determine that then switching type is that X2 switches, otherwise determine that switching type is that S1 switches.
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| CN 201110009876 CN102076039B (en) | 2011-01-17 | 2011-01-17 | Method and device for transmitting switching information |
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| CN102917422B (en) * | 2011-08-05 | 2017-04-12 | 中兴通讯股份有限公司 | Switching method for switching to home base station and base station |
| CN102917434B (en) * | 2011-08-05 | 2018-01-30 | 中兴通讯股份有限公司 | A kind of Home eNodeB supports connection control method and system under multiple cell scene |
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