CN102301788B - Method and device for establishing X2 link - Google Patents
Method and device for establishing X2 link Download PDFInfo
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- CN102301788B CN102301788B CN2011800012022A CN201180001202A CN102301788B CN 102301788 B CN102301788 B CN 102301788B CN 2011800012022 A CN2011800012022 A CN 2011800012022A CN 201180001202 A CN201180001202 A CN 201180001202A CN 102301788 B CN102301788 B CN 102301788B
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Abstract
An embodiment of the present invention provides a method and a device for establishing an X2 link. The method comprises the steps as follows: a first base station sends an X2 link establishing request message to a second base station for requesting to establish the X2 link between the first base station and the second base station; wherein the X2 link establishing request message comprises an identification of a first MME (Mobility Management Entity) and an identification of a first SGW (Serving Gateway) which are corresponding to the first base station; the first base station receives an X2link establishing response message which is returned by the second base station according to the X2 link establishing request message in order to establish the X2 link; and wherein the X2 link establishing response message comprises an identification of a second MME and an identification of a second SGW which are corresponding to the second base station. According to the embodiment of the presentinvention, the first base station and the second base station can respectively obtain the MME and the SGW corresponding to the opposite terminal in the process of X2 link establishing, thus when UE (User Equipment) switches between the first base station and the second base station, the first base station or the second base station can make an accurate switching adjudgement.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of X2 link establishing method and device.
Background technology
At common LTE (Long Term Evolution, Long Term Evolution) in the network design, a plurality of eNB (evolved Node Base, evolution base station) can be connected to same MME (MobilityManagement Entity, mobile management entity), this MME can connect a plurality of SGW (ServingGateway, gateway).When each eNB inserted MME, MME distributed a SGW for this eNB.When a UE moved between two eNB, namely when UE moved to target side eNB from source eNB, UE need will switch between these two eNB, and the concrete mode of switching is determined by the annexation of these two eNB and SGW.
Yet in the existing technology, source eNB can't be known the situation that is connected of target side eNB and SGW, and thus, source eNB can't accurately judge this and carry out what kind of switch mode, thereby causes part switch decision mistake, causes handoff failure.
Summary of the invention
The embodiment of the invention provides a kind of X2 link establishing method and device, and the foundation with by the X2 link makes the base station can make switching judging accurately.
The embodiment of the invention provides a kind of X2 link establishing method, comprising:
First base station sends X2 request for building link message to second base station, the X2 link between described first base station and described second base station is set up in request; Wherein, described X2 request for building link message comprises the sign of a MME of the described first base station correspondence and the sign of a SGW;
Described first base station receives the X2 link establishment response message that described second base station is returned according to described X2 request for building link message, to set up described X2 link; Comprise the sign of the 2nd MME of the described second base station correspondence and the sign of the 2nd SGW in the described X2 link establishment response message.
The embodiment of the invention also provides a kind of X2 link establishing method, comprising:
Second base station receives the X2 request for building link message that first base station sends; Described X2 request for building link message comprises the sign of a MME of the described first base station correspondence and the sign of a SGW;
Described second base station sends X2 link establishment response message according to described X2 request for building link message to described first base station, to set up described X2 link; Comprise the sign of described the 2nd MME of the described second base station correspondence and the sign of the 2nd SGW in the described X2 link establishment response message.
The embodiment of the invention provides a kind of X2 link establishment device, and described device is contained in first base station, and this device comprises:
Request sending module is used for sending X2 request for building link message to second base station, and the X2 link between described first base station and described second base station is set up in request; Wherein, described X2 request for building link message comprises the sign of a MME of the described first base station correspondence and the sign of a SGW;
The response receiver module is used for receiving the X2 link establishment response message that described second base station is returned according to described X2 request for building link message, to set up described X2 link; Comprise the sign of the 2nd MME of the described second base station correspondence and the sign of the 2nd SGW in the described X2 link establishment response message.
The embodiment of the invention also provides a kind of X2 link establishment device, and described device is contained in second base station, and this device comprises:
The request receiver module is used for receiving the X2 request for building link message that first base station sends; Described X2 request for building link message comprises the sign of a MME of the described first base station correspondence and the sign of a SGW;
The response sending module is used for sending X2 link establishment response message to described first base station according to described X2 request for building link message, to set up described X2 link; Comprise the sign of described the 2nd MME of the described second base station correspondence and the sign of the 2nd SGW in the described X2 link establishment response message.
X2 link establishing method and the device of the embodiment of the invention, between first base station and second base station, set up in the process of X2 link, first base station sends to second base station with the sign of a MME of its correspondence and the sign of a SGW, and second base station sends to first base station with the sign of the 2nd MME of its correspondence and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done an introduction simply in will describing embodiment below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of X2 link establishing method embodiment one of the present invention;
Fig. 2 is the flow chart of X2 link establishing method embodiment two of the present invention;
Fig. 3 is the flow chart of X2 link establishing method embodiment three of the present invention;
The flow chart of the X2 link update method that Fig. 4 provides for one embodiment of the invention;
Fig. 5 is the schematic diagram of X2 link establishment device embodiment one of the present invention;
Fig. 6 is the schematic diagram of X2 link establishment device embodiment two of the present invention;
Fig. 7 is the schematic diagram of X2 link establishment device embodiment three of the present invention;
Fig. 8 is the schematic diagram of X2 link establishment device embodiment four of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Fig. 1 is the flow chart of X2 link establishing method embodiment one of the present invention, and as shown in Figure 1, this method comprises:
In the LTE network design, can set up the X2 link between two eNB.The eNB that initiates the X2 link establishment in the present embodiment is called first base station.Wherein, wait that two eNB that set up the X2 link can insert same MME, also can insert different MME; Each MME can connect a plurality of SGW.In the present embodiment, after a MME was inserted in first base station, the configuration of first base station linked with a SGW's; At this moment, the MME of the first base station correspondence is a MME, and the SGW of the first base station correspondence is a SGW.After the 2nd MME was inserted in second base station, the configuration of second base station linked with the 2nd SGW's; At this moment, the MME of the second base station correspondence is the 2nd MME, and the SGW of the second base station correspondence is the 2nd SGW.
First base station sends X2 request for building link message to second base station, wherein, carried the sign of the SGW of the sign of MME of the first base station correspondence and the first base station correspondence in this request message.Thus, by this X2 request for building link message, MME and SGW that first base station is corresponding with it inform to second base station.
In this step, by this X2 link establishment response message, MME and SGW that second base station is corresponding with it inform to first base station.
Wherein, if same MME is inserted in first base station and second base station, a MME and the 2nd MME are same MME so.Link if exist between first base station and second base station and the same SGW, a SGW and the 2nd SGW are same SGW so.
After first base station and second base station were known the MME and SGW of the other side's correspondence respectively, when UE moved between first base station and second base station, the switch mode that should take namely can be judged accurately in the base station of source; When UE switched to second base station from first base station, first base station was the base station of source, and second base station is the base station of target side; When UE switched to first base station from second base station, second base station was the base station of source, and first base station is the base station of target side.
The base station of source can be according to the regulation of existing protocol when judging the switch mode that should select.For example, select switch mode detailed process can for: if disposed the X2 link between two eNB, and these two eNB are connected to same MME, at this moment, exist one link with source eNB customer service place SGW if target is surveyed eNB, then when UE switched to target survey eNB from source eNB, it was the X2 switching that source eNB adjudicates, otherwise when UE switched to target side eNB from source eNB, source eNB judgement was switched for S1.Wherein, target side eNB exists one to link with source eNB customer service place SGW and to refer to: source eNB disposes and the linking an of SGW, and target side eNB also disposes and the linking of this SGW.
Specifically describe carrying out the situation that X2 switches and S1 switches respectively below:
A. carry out the situation that X2 switches
ENB1 and eNB2 are connected to MME1, and MME1 is connected with a plurality of SGW; Wherein, eNB1 has disposed the service link that is connected with SGW1 with eNB2, and has the X2 link between eNB1 and the eNB2.When originally the UE1 service chaining under eNB 1 covers was to SGW1, because cover reasons such as signal or load, when UE1 need switch to eNB2 from eNB1, eNB 1 needed the information such as X2 link between basis and the eNB2 to adjudicate.Because eNB1 and eNB2 are connected to same MME, and exist between eNB2 and the SGW1 and link, carry out the X2 switching so eNB1 adjudicates; This moment, eNB1 was source, and eNB2 is target side.Wherein, the promoter of the X2 link between eNB1 and the eNB2 can be eNB1, also can be eNB2.
B. carry out the situation that S1 switches
Do not have X2 link or eNB1 and eNB2 to be connected under the situation of different MME between eNB1 and the eNB2, when UE need switch to eNB2 from eNB1, the eNB1 switch decision was that S1 switches.In addition, following scene is also adjudicated the switching into S1:
ENB1 and eNB2 are connected to MME1, and MME1 is connected with a plurality of SGW; Wherein, eNB1 has disposed and the linking of SGW1, and eNB2 has disposed and the linking of SGW2, namely eNB2 do not dispose with eNB1 customer service place SGW1 between link; There is the X2 link between eNB1 and the eNB2, when the original UE1 service chaining under eNB1 covers to SGW1, because reasons such as covering signal or loads, when UE1 need switch to eNB2 from eNB1, eNB1 do not link owing to do not exist between eNB2 and the SGW1, so need adjudicate and carry out S1 and switch; This moment, eNB1 was source, and eNB2 is target side.Wherein, the promoter of the X2 link between eNB1 and the eNB2 can be eNB1, also can be eNB2.
The embodiment of the invention, between first base station and second base station, set up in the process of X2 link, first base station sends to second base station with the sign of a MME of its correspondence and the sign of a SGW, and second base station sends to first base station with the sign of the 2nd MME of its correspondence and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
Fig. 2 is the flow chart of X2 link establishing method embodiment two of the present invention, and as shown in Figure 2, this method comprises:
Present embodiment is corresponding with embodiment shown in Figure 1, is X2 link establishment recipient as the eNB of the executive agent of present embodiment.After the 2nd MME was inserted in second base station, the configuration of second base station linked with the 2nd SGW's; At this moment, the MME of the second base station correspondence is the 2nd MME, and the SGW of the second base station correspondence is the 2nd SGW.
First base station sends X2 request for building link message to second base station; Then second base station just receives the X2 request for building link message that first base station sends.Wherein, carried the sign of the SGW of the sign of MME of the first base station correspondence and the first base station correspondence in this X2 request for building link message.Thus, by this X2 request for building link message, MME and SGW that first base station is corresponding with it inform to second base station.
The one MME is same MME or different MME with the 2nd MME, and a SGW is same SGW or different SGW with the 2nd SGW.
In this step, by this X2 link establishment response message, MME and SGW that second base station is corresponding with it inform to first base station.
Wherein, if same MME is inserted in first base station and second base station, a MME and the 2nd MME are same MME so.Link if exist between first base station and second base station and the same SGW, a SGW and the 2nd SGW are same SGW so.
After first base station and second base station were known the MME and SGW of the other side's correspondence respectively, when UE moved between first base station and second base station, the switch mode that should take namely can be judged accurately in the base station of source.The base station of source judges that the process of switch mode referring to the corresponding description in embodiment illustrated in fig. 1, does not repeat them here.
The embodiment of the invention, between first base station and second base station, set up in the process of X2 link, first base station sends to second base station with the sign of a MME of its correspondence and the sign of a SGW, and second base station sends to first base station with the sign of the 2nd MME of its correspondence and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
Fig. 3 is the flow chart of X2 link establishing method embodiment three of the present invention, and as shown in Figure 3, this method comprises:
After step 301, eNB1 inserted MME1, the eNB1 configuration linked with SGW1's.
ENB1 in the present embodiment is equivalent to first base station, and eNB2 is equivalent to second base station; MME1 is equivalent to a MME, and MME2 is equivalent to the 2nd MME; SGW1 is equivalent to a SGW, and SGW2 is equivalent to the 2nd SGW.
After step 302, eNB2 inserted MME2, the eNB2 configuration linked with SGW2's.
Wherein, present embodiment does not limit the sequential relationship of step 301 and step 302; And the SGW1 in the present embodiment and SGW2 can be same SGW, also can not be same SGW; MME1 and MME2 can be same MME, also can not be same MME.
ENB1 sends the X2 request for building link to eNB2; Wherein, this X2 request for building link message comprises the sign of the SGW1 of the sign of MME1 of eNB1 correspondence and eNB1 correspondence, to give eNB2 with the MME of eNB1 correspondence and the information notification of SGW.
Comprise the sign of MME2 of eNB2 correspondence and the sign of SGW2 in this X2 link establishment response message, to give eNB1 with the MME of eNB2 correspondence and the information notification of SGW.
When the MME of eNB1 correspondence or SGW changed, eNB1 sent an X2 link updating message to eNB2, informed to eNB2 with MME or the SGW of the eNB1 correspondence after will upgrading; ENB2 receives the X2 link updating message that eNB1 sends, and namely knows MME or the SGW of the eNB1 correspondence after the renewal; The one X2 link updating message comprises the sign of MME of the eNB1 correspondence after the renewal or the sign of SGW.
Same, when the MME of eNB2 correspondence or SGW changed, eNB2 sent the 2nd X2 link updating message to eNB1, informed to eNB1 with MME or the SGW of the eNB2 correspondence after will upgrading; ENB1 receives the 2nd X2 link updating message that eNB2 sends, and namely knows MME or the SGW of the eNB2 correspondence after the renewal; The 2nd X2 link updating message comprises the sign of MME of the eNB2 correspondence after the renewal or the sign of SGW.
After the X2 link establishment, can know the other side's MME and SGW information between the eNB mutually, thus, when UE moves between eNB, source eNB can be according to MME and the SGW information of target side eNB, rule out accurately and use X2 to switch or the S1 switching, concrete judging process is referring to the description in embodiment illustrated in fig. 1.
The embodiment of the invention is set up between eNB1 and eNB2 in the process of X2 link, and the sign of the MME1 that eNB1 is corresponding with it and the sign of SGW1 send to eNB2, and the sign of the MME1 that eNB2 is corresponding with it and the sign of SGW2 send to eNB1; Thereby make eNB1 and eNB2 obtain the corresponding MME in opposite end and SGW respectively, when UE switched between eNB1 and eNB2, eNB1 or eNB2 can select switch mode accurately thus, thereby made switch decision accurately.
The flow chart of the X2 link update method that Fig. 4 provides for one embodiment of the invention, as shown in Figure 4, this method comprises:
After setting up the X2 link between first base station and second base station, if MME or the SGW of the first base station correspondence changes, then first base station sends an X2 link updating message to second base station, and MME or the SGW of the first base station correspondence informed to second base station; If MME or the SGW of the second base station correspondence change, then second base station sends the 2nd X2 link updating message to first base station, and MME or the SGW of the second base station correspondence informed to first base station.
Wherein, the embodiment of the invention does not limit the sequencing of step 401 and step 402.
Know the sign of the sign of MME of the current correspondence in second base station and SGW by the 2nd X2 link updating message in first base station after, if UE switches to second base station from first base station, then first base station can be carried out and switch according to the current sign of corresponding MME respectively in first base station and second base station and the sign of SGW.
Know the sign of the sign of MME of the current correspondence in first base station and SGW by an X2 link updating message in second base station after, if UE switches to first base station from second base station, then second base station can be carried out and switch according to the current sign of corresponding MME respectively in first base station and second base station and the sign of SGW.
In the present embodiment, the process of switching is specifically carried out referring to the description among above-mentioned each method embodiment in the base station, does not repeat them here.
The embodiment of the invention, in the X2 link renewal process between first base station and second base station, first base station can send to second base station with the sign of a MME of its correspondence and the sign of a SGW, and second base station can send to first base station with the sign of the 2nd MME of its correspondence and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; Aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Fig. 5 is the schematic diagram of X2 link establishment device embodiment one of the present invention, and this device is contained in first base station, and as shown in Figure 5, this device comprises: request sending module 51 and response receiver module 53.
Request sending module 51 is used for sending X2 request for building link message to second base station, and the X2 link between described first base station and described second base station is set up in request.
Wherein, described X2 request for building link message comprises the sign of first mobile management entity MME of the described first base station correspondence and the sign of the first gateway SGW.
Comprise the sign of the 2nd MME of the described second base station correspondence and the sign of the 2nd SGW in the described X2 link establishment response message.
The device that present embodiment provides is used for realizing method embodiment shown in Figure 1.The workflow of each module and operation principle do not repeat them here referring to the description among the above-mentioned method embodiment shown in Figure 1 in the present embodiment.
The embodiment of the invention, between first base station and second base station, set up in the process of X2 link, the request sending module of first base station sends to second base station with the sign of a MME of its correspondence and the sign of a SGW, and the response receiver module receives the sign of the 2nd MME of the second base station correspondence that second base station sends and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
Fig. 6 is the schematic diagram of X2 link establishment device embodiment two of the present invention, and on basis embodiment illustrated in fig. 5, this device also comprises: first upgrades sending module 55 and/or first upgrades receiver module 57.
Further, this device can also comprise: first Executive Module 59.
First upgrades sending module 55 is used for then sending an X2 link updating message to described second base station if MME or the SGW of the described first base station correspondence change; A described X2 link updating message comprises the MME of the described first base station correspondence after the renewal or the sign of SGW; And/or
First upgrades receiver module 57 is used for then receiving the 2nd X2 link updating message that described second base station sends if MME or the SGW of the described second base station correspondence change; Described the 2nd X2 link updating message comprises the MME of the described second base station correspondence after the renewal or the sign of SGW.
The device that present embodiment provides is used for realizing Fig. 1-method embodiment shown in Figure 3.The workflow of each module and operation principle do not repeat them here referring to the description among each method embodiment of above-mentioned Fig. 1-shown in Figure 3 in the present embodiment.
The embodiment of the invention, between first base station and second base station, set up in the process of X2 link, first base station sends to second base station with the sign of a MME of its correspondence and the sign of a SGW, and second base station sends to first base station with the sign of the 2nd MME of its correspondence and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
Fig. 7 is the schematic diagram of X2 link establishment device embodiment three of the present invention, and this device is contained in second base station, and as shown in Figure 7, this device comprises: request receiver module 71 and response sending module 73.
The device that present embodiment provides is used for realizing method embodiment shown in Figure 2.The workflow of each module and operation principle do not repeat them here referring to the description among the above-mentioned method embodiment shown in Figure 2 in the present embodiment.
The embodiment of the invention, between first base station and second base station, set up in the process of X2 link, the request receiver module of second base station receives the sign of a MME of the first base station correspondence that first base station sends and the sign of a SGW, and the response sending module of second base station sends to first base station with the sign of the 2nd MME of the second base station correspondence and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
Fig. 8 is the schematic diagram of X2 link establishment device embodiment four of the present invention, and on basis embodiment illustrated in fig. 7, this device also comprises: second upgrades receiver module 75 and/or second upgrades sending module 77.
Further, this device can also comprise: second Executive Module 79.
Second upgrades receiver module 75 is used for then receiving the 2nd X2 link updating message that described first base station sends if MME or the SGW of the described first base station correspondence change; Described the 2nd X2 link updating message comprises the MME of the described first base station correspondence after the renewal or the sign of SGW.
Second upgrades sending module 77 is used for then sending an X2 link updating message to described first base station if MME or the SGW of the described second base station correspondence change; A described X2 link updating message comprises the MME of the described second base station correspondence after the renewal or the sign of SGW.
Second Executive Module 79 is used for if UE switches to described first base station from described second base station, then according to the current sign of corresponding MME respectively in described first base station and described second base station and the sign of SGW, carries out and switches.
The device that present embodiment provides is used for realizing Fig. 1-method embodiment shown in Figure 3.The workflow of each module and operation principle do not repeat them here referring to the description among each method embodiment of above-mentioned Fig. 1-shown in Figure 3 in the present embodiment.
The embodiment of the invention, between first base station and second base station, set up in the process of X2 link, first base station sends to second base station with the sign of a MME of its correspondence and the sign of a SGW, and second base station sends to first base station with the sign of the 2nd MME of its correspondence and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
One embodiment of the invention provides a kind of communication system, comprises first base station and second base station; This first base station comprises Fig. 5 or X2 link establishment device shown in Figure 6, and this second base station comprises Fig. 7 or X2 link establishment device shown in Figure 8.
The process that the system that present embodiment provides carries out the X2 link establishment can not repeat them here referring to the description among each method embodiment of above-mentioned Fig. 1-shown in Figure 3.
The system that the embodiment of the invention provides, between first base station and second base station, set up in the process of X2 link, first base station sends to second base station with the sign of a MME of its correspondence and the sign of a SGW, and second base station sends to first base station with the sign of the 2nd MME of its correspondence and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
Another embodiment of the present invention also provides a kind of communication system, comprises first base station and second base station;
This first base station is used for: send an X2 link updating message to second base station, and receive the 2nd X2 link updating message that second base station sends; Wherein, an X2 link updating message comprises the MME of the first base station correspondence after the renewal or the sign of SGW, and the 2nd X2 link updating message comprises the MME of the second base station correspondence after the renewal or the sign of SGW;
This second base station is used for: send the 2nd X2 link updating message to first base station, and receive the X2 link updating message that first base station sends;
This first base station also is used for: if UE switches to second base station from first base station, then according to the current sign of corresponding MME respectively in first base station and second base station and the sign of SGW, carry out and switch;
This second base station also is used for: if UE switches to first base station from second base station, then according to the current sign of corresponding MME respectively in first base station and second base station and the sign of SGW, carry out and switch.
The system that present embodiment provides carries out process that the X2 link upgrades and can not repeat them here referring to the description among the above-mentioned method embodiment shown in Figure 4.
The embodiment of the invention, in the X2 link renewal process between first base station and second base station, first base station can send to second base station with the sign of a MME of its correspondence and the sign of a SGW, and second base station can send to first base station with the sign of the 2nd MME of its correspondence and the sign of the 2nd SGW; Thereby make win base station and second base station obtain the corresponding MME in opposite end and SGW respectively, thus when UE switches between first base station and second base station, first base station or second base station can be selected switch mode accurately, thereby make switch decision accurately.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. an X2 link establishing method is characterized in that, comprising:
First base station sends X2 request for building link message to second base station, the X2 link between described first base station and described second base station is set up in request; Wherein, described X2 request for building link message comprises the sign of first mobile management entity MME of the described first base station correspondence and the sign of the first gateway SGW;
Described first base station receives the X2 link establishment response message that described second base station is returned according to described X2 request for building link message, to set up described X2 link; Comprise the sign of the 2nd MME of the described second base station correspondence and the sign of the 2nd SGW in the described X2 link establishment response message;
Described method also comprises:
If UE switches to described second base station from described first base station, then described first base station is carried out and is switched according to the current sign of corresponding MME respectively in described first base station and described second base station and the sign of SGW.
2. method according to claim 1 is characterized in that, also comprises:
If MME or the SGW of the described first base station correspondence change, then send an X2 link updating message to described second base station; A described X2 link updating message comprises the MME of the described first base station correspondence after the renewal or the sign of SGW; Perhaps
If MME or the SGW of the described second base station correspondence change, then described first base station receives the 2nd X2 link updating message that described second base station sends; Described the 2nd X2 link updating message comprises the MME of the described second base station correspondence after the renewal or the sign of SGW.
3. an X2 link establishing method is characterized in that, comprising:
Second base station receives the X2 request for building link message that first base station sends; Described X2 request for building link message comprises the sign of first mobile management entity MME of the described first base station correspondence and the sign of the first gateway SGW;
Described second base station sends X2 link establishment response message according to described X2 request for building link message to described first base station, to set up described X2 link; Comprise the sign of described the 2nd MME of the described second base station correspondence and the sign of the 2nd SGW in the described X2 link establishment response message;
Described method also comprises:
If UE switches to described first base station from described second base station, then described second base station is carried out and is switched according to the current sign of corresponding MME respectively in described first base station and described second base station and the sign of SGW.
4. method according to claim 3 is characterized in that, also comprises:
If MME or the SGW of the described first base station correspondence change, then described second base station receives the 2nd X2 link updating message that described first base station sends; Described the 2nd X2 link updating message comprises the MME of the described first base station correspondence after the renewal or the sign of SGW; Perhaps
If MME or the SGW of the described second base station correspondence change, then described second base station sends an X2 link updating message to described first base station; A described X2 link updating message comprises the MME of the described second base station correspondence after the renewal or the sign of SGW.
5. X2 link establishment device, described device is contained in first base station, it is characterized in that, comprising:
Request sending module is used for sending X2 request for building link message to second base station, and the X2 link between described first base station and described second base station is set up in request; Wherein, described X2 request for building link message comprises the sign of first mobile management entity MME of the described first base station correspondence and the sign of the first gateway SGW;
The response receiver module is used for receiving the X2 link establishment response message that described second base station is returned according to described X2 request for building link message, to set up described X2 link; Comprise the sign of the 2nd MME of the described second base station correspondence and the sign of the 2nd SGW in the described X2 link establishment response message;
Described device also comprises:
First Executive Module is used for if UE switches to described second base station from described first base station, then according to the current sign of corresponding MME respectively in described first base station and described second base station and the sign of SGW, carries out and switches.
6. device according to claim 5 is characterized in that, also comprises:
First upgrades sending module, is used for then sending an X2 link updating message to described second base station if MME or the SGW of the described first base station correspondence change; A described X2 link updating message comprises the MME of the described first base station correspondence after the renewal or the sign of SGW; And/or
First upgrades receiver module, is used for then receiving the 2nd X2 link updating message that described second base station sends if MME or the SGW of the described second base station correspondence change; Described the 2nd X2 link updating message comprises the MME of the described second base station correspondence after the renewal or the sign of SGW.
7. X2 link establishment device, described device is contained in second base station, it is characterized in that, comprising:
The request receiver module is used for receiving the X2 request for building link message that first base station sends; Described X2 request for building link message comprises the sign of first mobile management entity MME of the described first base station correspondence and the sign of the first gateway SGW;
The response sending module is used for sending X2 link establishment response message to described first base station according to described X2 request for building link message, to set up described X2 link; Comprise the sign of described the 2nd MME of the described second base station correspondence and the sign of the 2nd SGW in the described X2 link establishment response message;
Described device also comprises:
Second Executive Module is used for if UE switches to described first base station from described second base station, then according to the current sign of corresponding MME respectively in described first base station and described second base station and the sign of SGW, carries out and switches.
8. device according to claim 7 is characterized in that, also comprises:
Second upgrades receiver module, is used for then receiving the 2nd X2 link updating message that described first base station sends if MME or the SGW of the described first base station correspondence change; Described the 2nd X2 link updating message comprises the MME of the described first base station correspondence after the renewal or the sign of SGW; And/or
Second upgrades sending module, is used for then sending an X2 link updating message to described first base station if MME or the SGW of the described second base station correspondence change; A described X2 link updating message comprises the MME of the described second base station correspondence after the renewal or the sign of SGW.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/072609 WO2011137703A2 (en) | 2011-04-11 | 2011-04-11 | Method and device for establishing x2 link |
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| CN102301788A CN102301788A (en) | 2011-12-28 |
| CN102301788B true CN102301788B (en) | 2013-09-11 |
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| CN104394528B (en) * | 2012-01-04 | 2018-03-27 | 华为技术有限公司 | X2 safe channel establishing methods and system and base station |
| WO2012092858A2 (en) * | 2012-01-04 | 2012-07-12 | 华为技术有限公司 | Method, system, and enb for establishing secure x2 channel |
| IN2014DN05867A (en) * | 2012-01-16 | 2015-06-26 | Nec Corp | |
| EP2945459B1 (en) * | 2013-02-01 | 2018-01-31 | Huawei Technologies Co., Ltd. | Data interaction method and device |
| CN103718580A (en) * | 2013-06-28 | 2014-04-09 | 华为技术有限公司 | Link establishing method, apparatus and system |
| CN104904308B (en) * | 2013-08-08 | 2019-07-12 | 华为技术有限公司 | A kind of method and device that tunnel is established |
| WO2015018038A1 (en) | 2013-08-08 | 2015-02-12 | 华为技术有限公司 | Tunnel establishment method and device |
| WO2015042825A1 (en) * | 2013-09-26 | 2015-04-02 | 华为技术有限公司 | Method and relevant device for determining information |
| CN105519230B (en) * | 2014-12-26 | 2019-09-10 | 华为技术有限公司 | Communication means and network element device |
| CN106793174B (en) * | 2016-11-30 | 2020-06-30 | 广东米德有源通信科技有限公司 | X2 link optimization method and device |
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| CN102301788A (en) | 2011-12-28 |
| WO2011137703A3 (en) | 2012-03-22 |
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