CN102104979B - Method, device and system for establishing local exchange - Google Patents
Method, device and system for establishing local exchange Download PDFInfo
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- CN102104979B CN102104979B CN200910189248.6A CN200910189248A CN102104979B CN 102104979 B CN102104979 B CN 102104979B CN 200910189248 A CN200910189248 A CN 200910189248A CN 102104979 B CN102104979 B CN 102104979B
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Abstract
The invention discloses a method, a corresponding device and a system for establishing local exchange. The method comprises the following steps: using a second mobile exchange center to receive information sent by a first mobile exchange center, wherein the information contains a calling branch identification controlled by the first mobile exchange center and an identification of a controller requiring for establishing local exchange; judging whether meeting the conditions of establishing local exchange by the second mobile exchange center; and when the conditions of establishing local exchange are met, using the second mobile exchange center to inform the controller to establish local exchange according to the calling branch identification controlled by the first mobile exchange center. By using the method, device and system for establishing local exchange provided by the invention, the application scene of the local exchange is expanded and the success rate for establishing local exchange is increased.
Description
Technical field
The present invention relates to the communications field, particularly set up method, the equipment and system of local exchange.
Background technology
In local call, for calling, relate to the scene of a plurality of MSC (mobile switching centre), as in gsm system, BSC (base station controller) connects MSC1, MSC2 simultaneously.The calling branch of caller MS1 (travelling carriage) is controlled by MSC1, and the calling branch of called MS 2 is controlled by MSC2.If MSC1 finds to set up local exchange, MSC1 directly notifies BSC.After having notice, carries out BSC local exchange operation.If BSC is successfully completed local exchange, by message, inform MSC1.MSC1 receives after message, informs that MSC2 local exchange sets up, and MSC-2 receives after message, replys.
In prior art, have such situation, when MSC1 notice BSC sets up local exchange, the calling branch of MS2 may just prepare to initiate supplementary service, and this supplementary service conflicts with local exchange.MSC1 is also ignorant to this, finally causes local exchange to be set up unsuccessfully; In addition, under some complex scene, while setting up local exchange as MSC1 notice BSC, the calling branch of MS2 just switches across BSC, may cause altering words.
Summary of the invention
The technical problem that the embodiment of the present invention will solve is to solve local exchange under many MSC scene to set up failed problem, improves the success rate of setting up local exchange under many MSC scene.
For this reason, the embodiment of the present invention provides a kind of method of setting up local exchange on the one hand, comprising:
The first mobile switching centre sends message to the second mobile switching centre, and described message comprises the sign of the calling branch that the first mobile switching centre controls, and the sign that need set up the controller of local exchange;
So that described the second mobile switching centre determines, meet while setting up the condition of local exchange, notify described controller to set up local exchange according to the sign of the calling branch of described the first mobile switching centre control.
The embodiment of the present invention provides a kind of method of setting up local exchange on the other hand, comprising:
The second mobile switching centre receives the message that the first mobile switching centre sends, described message comprise that the first mobile switching centre controls the sign of calling branch, and the sign that need set up the controller of local exchange;
Described the second mobile switching centre judges whether to meet the condition of setting up local exchange;
When determine meeting while setting up the condition of local exchange, described the second mobile switching centre notifies the sign of the calling branch that described controller controls according to described the first mobile switching centre to set up local exchange.
The present invention provides a kind of mobile switching centre on the other hand, it is characterized in that, comprising:
Construction unit, for building message, described message comprise that described mobile switching centre controls the sign of calling branch, and the sign that need set up the controller of local exchange;
Transmitting element, for sending described message to the second mobile switching centre, so that described the second mobile switching centre determines, meet while setting up the condition of local exchange, notify described controller to set up local exchange according to the sign of the calling branch of described mobile switching centre control.
The present invention provides another kind of mobile switching centre on the other hand, comprising:
The first receiving element, the message sending for receiving the first mobile switching centre, described message comprises the sign of the calling branch that the first mobile switching centre controls, and the sign that need set up the controller of local exchange;
Judging unit, for judging whether to meet the condition of setting up local exchange;
Notification unit, while setting up the condition of local exchange for determine meeting when judging unit, notifies the sign of the calling branch that described controller controls according to described the first mobile switching centre to set up local exchange.
Further aspect of the present invention provides a kind of system of setting up local exchange, comprising:
The first mobile switching centre, the second mobile switching centre;
Described the first mobile switching centre is for sending message to described the second mobile switching centre, and described message comprises the sign of the calling branch that the first mobile switching centre controls, and the sign that need set up the controller of local exchange;
The described message that described the second mobile switching centre sends for receiving described the first mobile switching centre, and judge whether to meet the condition set up local exchange, when determine meeting while setting up the condition of local exchange, notify the sign of the calling branch that described controller controls according to described the first mobile switching centre to set up local exchange.
The method that the embodiment of the present invention provides, Apparatus and system, while setting up local exchange in relating to the scene of a plurality of MSC, by starting the MSC1 of local exchange to the MSC2 transmission message of opposite end, by MSC2, judged whether to set up local exchange, and notification controller carries out local exchange operation; Rather than directly by MSC1 notification controller, carry out local exchange operation, avoided the operation of MSC1 notification controller local exchange, and opposite end does not possess that the condition of local exchange causes, do not set up local exchange failure and alter words under some complex scene, expand the application scenarios of local exchange, improved the power that is created as of local exchange.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of setting up the system of local exchange of the embodiment of the present invention;
Fig. 2 is an a kind of schematic flow sheet setting up the method for local exchange of the embodiment of the present invention;
Fig. 3 is a kind of another schematic flow sheet of setting up the method for local exchange of the embodiment of the present invention;
Fig. 4 is a signaling diagram setting up the method for local exchange under embodiment of the present invention call setup scene;
Fig. 5 is that the embodiment of the present invention is across signaling diagram of method of setting up local exchange under controller switching scene;
Fig. 6 is that the embodiment of the present invention is across a signaling diagram setting up the method for local exchange under MSC handoff scenario;
Fig. 7 is a structural representation of a kind of MSC of the embodiment of the present invention;
Fig. 8 is another structural representation of a kind of MSC of the embodiment of the present invention;
Fig. 9 is a structural representation of the another kind of MSC of the embodiment of the present invention;
Figure 10 is another structural representation of the another kind of MSC of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 is a kind of structural representation of setting up the system of local exchange of the embodiment of the present invention, and as shown in Figure 1, this system comprises:
The first moving exchanging center MSC 1, the second moving exchanging center MSC 2;
MSC1 is for sending message to MSC2, and this message comprises the sign of the calling branch that MSC1 controls, and the sign that need set up the controller of local exchange;
The message that MSC2 sends for receiving MSC1, and judge whether to meet the condition of setting up local exchange, meets while setting up the condition of local exchange when determining, notifies the sign of the calling branch that described controller controls according to MSC1 to set up local exchange.
In the embodiment of the present invention, the message that MSC1 sends to MSC2 can be INR (informationRequest information request) message, in this INR message with the sign (this controller can be RNC or BSC) of the controller of MSC1 place calling branch, take BSC as example, being identified in this message of this BSC represent with Global BSC ID, and the sign oCall-Leg-ID that need set up the calling branch that the MSC1 of local exchange controls.
MSC2 is used for receiving above-mentioned INR message, judge whether to meet the condition of setting up local exchange, can be specifically whether consistent with the sign of controller in above-mentioned message according to judging the sign of the controller that calling branch that MSC2 controls is corresponding, if consistent, represent that calling and called are under same controller;
And whether be lawfully intercepted and whether occur and the afoul supplementary service of local exchange according to the user of place calling branch under the calling branch at MSC2 place (be MSC2 control calling branch) sign judgement MSC2 (being the user under the calling branch controlled of MSC2, may be caller or called), when caller and called under same controller, and the user of MSC2 place calling branch is not lawfully intercepted, while not occurring with the afoul supplementary service of local exchange yet, determine and meet the condition of setting up local exchange, the sign of the calling branch that notification controller is controlled according to MSC1 is set up local exchange, can be specifically the corresponding SCCP of calling branch (the Signaling Connection Control Part controlling by MSC2, signaling connection control protocol) connect and to controller, to send ESTABLISH LCLS REQUEST message and notify, the sign of the calling branch of controlling with MSC1 in this message.
Controller receives after this notification message, according to caller and called calling branch sign Call-Leg-ID, carry out local exchange operation, the sign of the calling branch that wherein MSC1 controls is learnt from above-mentioned ESTABLISH LCLS REQUEST message, the sign of the calling branch that MSC2 controls can be connected and be learnt by SCCP, and to MSC2 feedback execution result.MSC2 receives after the execution result of feedback, inform MSC1, can be to inform MSC1 by INF message, can carry Call-Leg-ID, the LCLS Status information of two calling branch having set up local exchange in INF message, wherein LCLS Status indication local exchange starts.
The system of setting up local exchange that the present embodiment provides can be set up local exchange in general calling process, also can be applied in the scene that caller in calling procedure or called generation are switched across BSC, MSC, and under the medium several scenes of call establishment.
The system of setting up local exchange that the present embodiment provides, while setting up local exchange in relating to the scene of a plurality of MSC, by starting the MSC1 of local exchange to the MSC2 transmission message of opposite end, by MSC2, judged whether to set up local exchange, and notification controller carries out local exchange operation; Rather than directly by MSC1 notification controller, carry out local exchange operation, avoided the operation of MSC1 notification controller local exchange, and opposite end does not possess that the condition of local exchange causes, do not set up local exchange failure and alter words under some complex scene, expand the application scenarios of local exchange, improved the power that is created as of local exchange.
In another embodiment of the present invention, when MSC2 judgement does not meet while setting up the condition of local exchange, to controller, do not send notice.
Following three conditions judge the dissatisfied condition of setting up local exchange while having arbitrary condition not meet: 1, calling and called branch is under same controller;
2, the user under the branch of MSC2 place (can be caller or called) does not occur and the afoul supplementary service of local exchange;
3, the user under the branch of MSC2 place (can be caller or called) is not lawfully intercepted.
When MSC2 judgement calling and called branch is not under same controller, can inform MSC1 by INF message, in message, can carry the sign of the controller of MSC2 place calling branch, the Call-Leg-ID of two calling branch, LCLS Status information, wherein LCLS Status indication local exchange does not start.
When judging above-mentioned condition 1, MSC2 meets, when 2,3 any one do not meet, can pass through information answer (INF, Information) message is informed MSC1, in message, can carry the sign of the controller of MSC2 place calling branch, the Call-Leg-ID of two calling branch, LCLS Requiremnet information, wherein local exchange is forbidden in LCLS Requiremnet indication.
Same, middle MSC1 embodiment illustrated in fig. 1 also can judge whether to start local exchange before sending message to MSC2, need to judge whether to meet the following conditions:
1, the user under the branch of MSC1 place (can be caller or called) does not occur and the afoul supplementary service of local exchange;
2, the user under the branch of MSC1 place (can be caller or called) is not lawfully intercepted.
When above-mentioned condition all meets, to MSC2, send message, to start local exchange.
In addition, MSC1 can also judge whether MSC2 supports local exchange, specifically receive the initial address message (IAM that MSC2 sends, Initial address message), when described initial address message comprises the sign of the controller that calling branch that the second mobile switching centre controls is corresponding, determine that MSC2 supports local exchange.Can also judge that calling and called branch is whether under same controller; If when the sign of the controller that the sign of the controller that the calling branch that MSC2 controls is corresponding is corresponding with the calling branch that MSC1 controls is identical, determine that calling and called branch is under same controller.If MSC2 supports local exchange, calling and called branch, under same controller, meets again above-mentioned condition, to MSC2, sends message.
Fig. 2 is an a kind of schematic flow sheet setting up the method for local exchange of the embodiment of the present invention, and as shown in Figure 2, the method comprises:
200 first moving exchanging center MSCs 1 send message to the second moving exchanging center MSC 2, this message comprise that MSC1 controls the sign of calling branch, and the sign that need set up the controller of local exchange; So that MSC2 determines, meet while setting up the condition of local exchange, notify described controller to set up local exchange according to the sign of the calling branch of described MSC1 control.
Concrete form of message from message to MSC2 and content that MSC1 sends there are detailed introduction in the embodiment shown in fig. 1, are not repeated herein.
Before MSC1 sends message to MSC2, MSC1 can judge whether to start local exchange, when judgment result is that can time, carry out to MSC2 and send message.
The judgement of carrying out can comprise:
1, judge whether MSC2 supports local exchange.
Can be to receive the IAM message that MSC2 sends, when IAM message comprises the sign of the controller that MSC2 is corresponding, determine that MSC2 supports local exchange.
2, calling and called branch is under same controller;
3, the user under the branch of MSC1 place (can be caller or called) does not occur and the afoul supplementary service of local exchange;
4, the user under the branch of MSC1 place (can be caller or called) is not lawfully intercepted.
When above-mentioned condition meets simultaneously, or above-mentioned 3,4 when meet (judging that 1,2 can not carry out) simultaneously, or 1 when meet, or 1,2 when meet, or 2,3,4 when meet, and to MSC2, sends message.
Fig. 3 is a kind of another schematic flow sheet of setting up the method for local exchange of the embodiment of the present invention, and the present embodiment is and a corresponding embodiment who sets up local exchange method from MSC2 side embodiment illustrated in fig. 2.As shown in Figure 3, the method comprises:
301 second moving exchanging center MSCs 2 receive the message that the first moving exchanging center MSC 1 sends, and this message comprises that MSC1 controls the sign of calling branch, and the sign that need set up the controller of local exchange.
This message can be the INR message in embodiment illustrated in fig. 1, and concrete form of message and the content of message have detailed introduction in the embodiment shown in fig. 1, are not repeated herein.
302MSC2 judges whether to meet the condition of setting up local exchange;
303 when determine meeting while setting up the condition of local exchange, and MSC2 notifies the sign of the identifying call letters branch of the calling branch that described controller controls according to MSC1 to set up local exchange.
MSC2 judges specifically: whether the sign of setting up the controller that calling branch that sign and the MSC2 of the controller of local exchange control is corresponding according to described need identical judges caller and called whether under same controller, whether whether the caller under MSC2 or the calling branch of called correspondence are lawfully intercepted, and occur and the afoul supplementary service of local exchange;
When described caller and called under same controller, and the caller under MSC2 or be not calledly lawfully intercepted, while also not occurring with the afoul supplementary service of local exchange, determine and meet the condition of setting up local exchange.MSC2 notification controller is set up local exchange, can be specifically that the corresponding SCCP of the calling branch controlled by MSC2 connects and to controller, sends ESTABLISHLCLS REQUEST (setting up local exchange request) message and notify, the sign of the calling branch of controlling with MSC1 in this message.
When described caller and called not in same controller lower time, to determine and do not meet the condition of setting up local exchange, notice MSC1 local exchange does not start;
When described caller and called under same controller, but the caller under MSC2 or called being lawfully intercepted, or when generation and the afoul supplementary service of local exchange, determine and do not meet the condition of setting up local exchange, notice MSC1 forbids local exchange.
After MSC2 notification controller, can receive the local exchange execution result that described controller returns, described execution result is sent to MSC1, can be to inform MSC1 by INF message, in INF message, can carry Call-Leg-ID, the LCLSStatus information of two calling branch having set up local exchange, wherein LCLS Status indication local exchange starts.
Fig. 2, the method for setting up local exchange providing in embodiment illustrated in fig. 3, while setting up local exchange in relating to the scene of a plurality of MSC, by starting the MSC1 of local exchange to the MSC2 transmission message of opposite end, by MSC2, judged whether to set up local exchange, and notification controller carries out local exchange operation; Rather than directly by MSC1 notification controller, carry out local exchange operation, avoided the operation of MSC1 notification controller local exchange, and opposite end does not possess that the condition of local exchange causes, do not set up local exchange failure and alter words under some complex scene, expand the application scenarios of local exchange, improved the power that is created as of local exchange.
Fig. 4 is a signaling diagram setting up the method for local exchange under embodiment of the present invention call setup scene, and call setup scene refers to the scene of calling and called foundation call.
In the present embodiment, the controller of setting up local exchange be take BSC as example, in order to indicate conveniently, this BSC has been carried out to differentiation in logic, the BSC of caller branch is oBSC, and the BSC of called branch is tBSC, and in fact oBSC and tBSC are Same Physical entity physically; The corresponding oBSC of MSC2, the corresponding tBSC of MSC1.In the present embodiment, the message of call setup flow process in prior art is not all shown, and only to relating to the message of technical solution of the present invention, describe.
As shown in Figure 4, the method comprises:
401 when call setup, and MSC2 sends IAM message to MSC1, in this message, can carry oBSC-ID, oCall-Leg-ID.
In this message, might not need to carry the ID of oBSC, can be when MSC2 supports local exchange, just carries oBSC-ID; If MSC2 does not support local exchange, do not carry oBSC-ID.
402MSC1 receives after this IAM message, by oBSC-ID, judges whether call out is local call.If local call, MSC1 can inform the ID of another calling branch of tBSC, i.e. oCall-Leg-ID in ASSIGNMENT REQUEST message.
In addition, MSC1 carries oBSC-ID cell and judges whether MSC2 supports local exchange by checking to have or not in IAM message.
403tBSC can set up local exchange by ASSIGNMENT COMPLETE message authentication.Wherein LCLS Requirement cell represents to set up local exchange.
It should be noted that, if in 401, in the IAM message that MSC2 sends to MSC1, do not carry oBSC-ID, 402 do not carry oCall-Leg-ID, also do not carry LCLSRequirement in 403.So, in 404, callee sends after connect message to calling party, and MSC1 can directly send INR message to MSC2.Only MSC1 does not know whether MSC2 supports local exchange.
404 callees send connect message to calling party
405MSC1 sends INR message to MSC2, and this message comprises LCLS Requirement, tGlobal BSC-ID (being the ID of tBSC), tCall-Leg-ID.Wherein can LCLS Requirement represent to require MSC2 judgement set up local exchange.
MSC2 receives after this INR message, judges whether to set up local exchange, judges now:
1, whether calling and called branch is under same controller;
Specifically according to whether the controller identifier at two calling branch places is identical, judge: MSC2 knows the controller identifier (oGlobal-BSC-ID) at caller branch place, MSC 1 has also informed the controller identifier (tGlobal-BSC-ID) at the called branch of MSC2 place.MSC2 is as long as relatively whether the controller identifier at these two calling branch places is identical.If identical, illustrate that calling and called branch is under same controller.
2, whether caller does not occur and the afoul supplementary service of local exchange;
3, whether caller is not lawfully intercepted.
When the judged result of above-mentioned three conditions is all "Yes", carry out 406.
If MSC2 finds that calling and called branch is not under same controller, can inform MSC1 by INF message, in message, can carry the sign of the controller of MSC2 place calling branch, the Call-Leg-ID of two calling branch, LCLS Status information, wherein LCLS Status indication local exchange does not start.
When judging above-mentioned condition 1, MSC2 meets, when 2,3 any one do not meet, can inform MSC1 by INF message, in message, can carry the sign of the controller of MSC2 place calling branch, the Call-Leg-ID of two calling branch, LCLS Requiremnet information, wherein local exchange is forbidden in LCLS Requiremnet indication.
406MSC2 sends ESTABLISH LCLS REQUEST message to oBSC, carries tCall-Leg-ID in message, requires oBSC to set up local exchange.
407oBSC returns to execution result ESTABLISH LCLS COMPLETE message to MSC2, and expression local exchange has been set up, and carries oCall-Leg-ID, tCall-Leg-ID in message.
408MSC2 receives after the executing result message of oBSC, by INF news MSC1.In this INF message, carry LCLS Status information, wherein LCLS Status indication local exchange starts, can also carry ID, oCall-Leg-ID, the tCall-Leg-ID of oBSC, for confirming that to MSC1 relevant calling branch set up local exchange under corresponding BSC.
Under the call setup scene that the present embodiment provides, set up the method for local exchange, by called MS C, when finding local exchange can be set up, to caller MSC, send message initiated local exchange, and judge again and could set up local exchange by caller MSC, improved the success rate of local exchange.
Fig. 5 is that the embodiment of the present invention is across signaling diagram of method of setting up local exchange under controller switching scene, in calling procedure, across controller switching scene, refer to: in calling procedure, caller or called from current controller switching another one controller, in the present embodiment, controller be take BSC as example, in figure, T-BSC refers to the target BS C of caller or called switching, MSC1 represents the MSC at caller place, MSC2 represents the MSC at called place, the caller of take in the present embodiment is switched to T-BSC from the BSC at original place and describes as example, as shown in Figure 5, the method comprises:
501MSC1 receives the handoff completion message HANDOVERCOMPLETE that T-BSC sends, and represents that caller has been switched under T-BSC.Now, calling and called are all under this T-BSC.
502MSC1 sends INR message to MSC2, and this message comprises LCLS Requirement, tGlobal BSC-ID (being the ID of T-BSC), the sign oCall-Leg-ID of the calling branch of caller.Wherein can LCLS Requirement represent to require MSC2 judgement local exchange set up.
MSC1 can judge whether to send INR message before sending INR message to MSC2.In the condition of concrete judgement and result embodiment shown in Figure 2,200 explanation, is not repeated herein.
MSC2 receives after this INR message, judges whether to set up local exchange, judges now:
1, whether calling and called branch is under same controller;
Specifically according to whether the controller identifier at two calling branch places is identical, judge: MSC2 knows the controller identifier (tGlobal-BSC-ID) at called branch place, after switching, MSC1 has also informed the controller identifier (Global-T-BSC-ID) at the rear place of MSC2 caller branch switching.MSC2 is as long as relatively whether the controller identifier at these two calling branch places is identical; If identical, illustrate that calling and called branch is under same controller.
2, not called whether generation and the afoul supplementary service of local exchange;
3, not called whether not being lawfully intercepted.
When the judged result of above-mentioned three conditions is all "Yes", carry out 503.
If MSC2 finds that calling and called branch is not under same controller, can inform MSC1 by INF message, in message, can carry Call-Leg-ID, the LCLS Status information of sign ,Liang Ge branch of the controller of MSC2 place calling branch, wherein LCLS Status indication local exchange does not start.
When judging above-mentioned condition 1, MSC2 meets, when 2,3 any one do not meet, can inform MSC1 by INF message, in message, can carry Call-Leg-ID, the LCLS Requiremnet information of sign ,Liang Ge branch of the controller of MSC2 place calling branch, wherein local exchange is forbidden in LCLS Requiremnet indication.
503MSC2 sends ESTABLISH LCLS REQUEST message to T-BSC, carries tCall-Leg-ID in message, requires T-BSC to set up local exchange.
504T-BSC returns to execution result ESTABLISH LCLS COMPLETE message to MSC2, and expression local exchange has been set up, and carries oCall-Leg-ID, tCall-Leg-ID in message.
505MSC2 receives after the executing result message of T-BSC, by INF news MSC1.In this INF message, carry LCLS Status information, wherein LCLS Status indication local exchange starts, and can also carry ID, oCall-Leg-ID, the tCall-Leg-ID of T-BSC.
The present embodiment provide across setting up the method for local exchange under controller switching scene, the MSC that switches rear place by the user who switches sends message initiated local exchange to opposite end MSC when finding to set up local exchange, and judge again and could set up local exchange by opposite end MSC, can avoid in calling procedure, occurring to switch across controller the local exchange causing and set up unsuccessfully, improve the success rate of local exchange.
Fig. 6 be the embodiment of the present invention across a signaling diagram setting up the method for local exchange under MSC handoff scenario, across MSC handoff scenario, refer to: in calling procedure, caller or called MSC from current place are switched to another MSC.
In the present embodiment, with calling subscriber, occur to switch to example across MSC, from the MSC1 at original place, be switched to the BSC MSC1 ', with the called formation local call under BSC.The MSC at called place is MSC2, and BSC also returns MSC2 management.As shown in Figure 6, the method comprises:
601MSC1 sends MAP Prepare Handover Request message to MSC1 '.
In this message, can carry tGlobal-BSC-ID cell and tCall-Leg-ID cell, wherein tGlobal-BSC-ID identifies the BSC at called place, and tCall-Leg-ID identifies called calling branch.These two cells judge for MSC1 ' whether two calling branch belong to same BSC.
602BSC sends handoff completion message to MSC1 '.
603MSC1 ' sends MAP Send End Signal Request message to MSC1, informs and has switched.
604MSC1 ' sends INR message to MSC2, and this message comprises LCLS Requirement, tGlobal-BSC-ID (being the ID of BSC), and caller is at the sign oCall-Leg-ID ' of the calling branch of MSC1 '.Wherein LCLS Requirement represents to require MSC2 to judge whether to set up local exchange.This INR message is by MSC1 transfer.
MSC1 ' can judge whether to send INR message before sending INR message to MSC2.In the condition of concrete judgement and result embodiment shown in Figure 2,200 explanation, is not repeated herein.
MSC2 receives after this INR message, judges whether to set up local exchange, judges now:
1, whether calling and called branch is under same controller;
Specifically according to the BSC at two calling branch places, judge: MSC2 knows the sign of the BSC at called current place, simultaneously MSC1 ' also informed MSC2 switch after the BSC sign at caller place, MSC2 judges that by relatively learning that whether two calling branch identical calling and called branch is whether under same BSC.
2, not called whether generation and the afoul supplementary service of local exchange;
3, not called whether not being lawfully intercepted.
When the judged result of above-mentioned three conditions is all "Yes", carry out 605.
If MSC2 finds that calling and called branch is not under same controller, can inform MSC1 ' by INF message, in message, can carry the sign of controller corresponding to calling branch that MSC2 controls, the Call-Leg-ID of two calling branch, LCLS Status information, wherein LCLS Status indication local exchange does not start.
When judging above-mentioned condition 1, MSC2 meets, when 2,3 any one do not meet, can inform MSC1 ' by INF message, in message, can carry LCLS Requiremnet information, local exchange is forbidden in indication, can also carry the sign of the Call-Leg-ID of two calling branch and the controller of MSC2 place calling branch.
605MSC2 sends ESTABLISH LCLS REQUEST message to BSC, carries tCall-Leg-ID in message, requires BSC to set up local exchange.
606BSC returns to execution result ESTABLISH LCLS COMPLETE message to MSC2, and expression local exchange has been set up, and carries oCall-Leg-ID ', tCall-Leg-ID in message.
607MSC2 receives after the executing result message of BSC, by INF news MSC1.In this INF message, carry LCLS Status information, wherein LCLS Status indication local exchange starts, and can also carry the ID of BSC, the Call-Leg-ID of two calling branch.
The present embodiment provide across setting up the method for local exchange under MSC handoff scenario, the MSC MSC by user place before switching when finding to set up local exchange that switches rear place by the user who switches sends message initiated local exchange to opposite end MSC, and judge again and could set up local exchange by opposite end MSC, can avoid in calling procedure, occurring to switch across MSC the local exchange causing sets up unsuccessfully, and cause alter words, improved the success rate of local exchange.
Fig. 7 is a structural representation of a kind of MSC of the embodiment of the present invention, and this MSC can think the MSC1 in above-described embodiment, and as shown in Figure 7, this MSC comprises:
Transmitting element 702, for sending described message to the second moving exchanging center MSC 2, meets while setting up the condition of local exchange so that MSC2 determines, notifies described controller to set up local exchange according to the sign of the calling branch of described mobile switching centre control.
The message building can be INR message, in this INR message, with the sign (this controller can be RNC or BSC) of the controller of MSC1 place calling branch, take BSC as example, and being identified in this message of this BSC represents with Global BSC ID; And the calling branch sign oCall-Leg-ID transmitting element 702 that the MSCl that need set up local exchange controls is for sending this INR message to MSC2.
Further, as shown in Figure 8, this MSC can also comprise: judging unit 703, for judging whether, need to start local exchange, and when judgment result is that while being, notice construction unit 701 is carried out and is built described message.
Receiving element 704, the initial address message sending for receiving described the second mobile switching centre;
Described judging unit 703 is when judging the sign of the controller that whether comprises in described initial address message that calling branch that the second mobile switching centre controls is corresponding, when described initial address message comprises the sign of the controller that calling branch that the second mobile switching centre controls is corresponding, determine that described the second mobile switching centre supports local exchange.Now, judging unit 703 is determined need to start local exchange, and notice construction unit 701 is carried out and built described message.
In addition, described judging unit 703 is also specifically for judging that caller and called calling branch are whether under same controller; And/or, judge caller or called whether being lawfully intercepted under described the first mobile switching centre, whether occur and the afoul supplementary service of local exchange.
The actual conditions that judging unit 703 judges and result can embodiment shown in Figure 2 in explanation in 200, be not repeated herein.
Fig. 9 is a structural representation of the another kind of MSC of the embodiment of the present invention, and this MSC can think the MSC2 in above-described embodiment, and as shown in Figure 9, this MSC comprises:
The first receiving element 901, the message sending for receiving the first mobile switching centre, this message comprises the sign of the calling branch that the first mobile switching centre controls, and the sign that need set up the controller of local exchange.
This message can be the INR message in embodiment illustrated in fig. 7, and concrete form of message and the content of message have detailed introduction in the embodiment shown in fig. 7, are not repeated herein.
Judging unit 902, for judging whether to meet the condition of setting up local exchange;
Described judging unit 902 sets up according to described need specifically for judgement whether the sign of the sign of controller of the local exchange controller corresponding with the calling branch of the second mobile switching centre control is identical judges caller and called whether under same controller, caller under described the second mobile switching centre or called whether being lawfully intercepted, and whether occur and the afoul supplementary service of local exchange; When described caller and called under same controller, and the caller under described the second mobile switching centre or be not calledly lawfully intercepted, while not occurring with the afoul supplementary service of local exchange yet, determine and meet the condition of setting up local exchange, indicate notification unit 903 to notify described controller to set up local exchange according to the sign of the calling branch of described the first mobile switching centre control.
Further, as shown in figure 10, MSC shown in Fig. 9 can also comprise transmitting element 904, for when the judging unit 902 described callers of judgement and called not in same controller lower time, to first mobile switching centre's local exchange described in described first mobile switching centre's transmission message informing, do not start; Or, for judging described callers and called under same controller when judging unit 902, but the caller under described the second mobile switching centre or called being lawfully intercepted, or when generation and the afoul supplementary service of local exchange, to described the first mobile switching centre, send the first mobile switching centre described in message informing and forbid local exchange.
Can also comprise the second receiving element 905, the local exchange execution result returning for receiving described controller; Transmitting element 904 is also for sending to described execution result described the first mobile switching centre.The second receiving element 905 is received after the execution result of feedback, can be to inform MSC1 by INF message, can carry Call-Leg-ID, the LCLS Status information of MSC2 place branch in INF message, and wherein LCLS Status indication local exchange starts.
The equipment of setting up local exchange that the embodiment of the present invention provides, has expanded the application scenarios of local exchange, has improved the power that is created as of local exchange.
The method of setting up local exchange that the embodiment of the present invention provides, equipment and system, can be applied in GSM (Global System for Mobile communications global system for mobile communications), WCDMA (access of Wideband Code Division Multiple Access Wideband Code Division Multiple Access (WCDMA)), in the systems such as TD-SCDMA (Time Division Synchronous Code Division Multiple Access TD SDMA).
It should be noted that, the embodiment of the present invention does not need to introduce independently functional part, and the mode that can add essential general hardware platform by software realizes.Understanding based on such, the part that the technical scheme of the embodiment of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprises that some instructions are in order to carry out the method described in each embodiment of the present invention.Here alleged storage medium, as: ROM/RAM, disk, CD etc.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a method of setting up local exchange, is characterized in that, comprising:
The first mobile switching centre judges whether to start local exchange;
When judgment result is that while being, to the second mobile switching centre, send message, described message comprises the sign of the calling branch that the first mobile switching centre controls, and the sign that need set up the controller of local exchange;
So that described the second mobile switching centre determines, meet while setting up the condition of local exchange, notify described controller to set up local exchange according to the sign of the calling branch of described the first mobile switching centre control; Describedly judge whether to start local exchange and comprise:
Described the first mobile switching centre receives the initial address message that described the second mobile switching centre sends, when described initial address message comprises the sign of the controller that calling branch that the second mobile switching centre controls is corresponding, determine that described the second mobile switching centre supports local exchange; Or,
Judge that caller and called calling branch are whether under same controller, and/or, judge caller or called whether being lawfully intercepted under described the first mobile switching centre, whether occur and the afoul supplementary service of local exchange.
2. the method for claim 1, is characterized in that:
The message that described the first mobile switching centre sends to the second mobile switching centre is information request (INR) message.
3. a method of setting up local exchange, is characterized in that, comprising:
The second mobile switching centre receives the message that the first mobile switching centre sends, described message comprise that the first mobile switching centre controls the sign of calling branch, and the sign that need set up the controller of local exchange;
Described the second mobile switching centre judges whether to meet the condition of setting up local exchange;
When determine meeting while setting up the condition of local exchange, described the second mobile switching centre notifies the sign of the calling branch that described controller controls according to described the first mobile switching centre to set up local exchange;
Describedly judge whether to meet the condition set up local exchange and comprise:
The sign of setting up the controller that calling branch that the sign of the controller of local exchange controls with described the second mobile switching centre is corresponding according to described need judges caller and called whether under same controller, caller under described the second mobile switching centre or called whether being lawfully intercepted, and whether occur and the afoul supplementary service of local exchange;
When described caller and called under same controller, and the caller under described the second mobile switching centre or be not calledly lawfully intercepted, while also not occurring with the afoul supplementary service of local exchange, determine and meet the condition of setting up local exchange;
When described caller and called not in same controller lower time, determine and do not meet the condition of setting up local exchange, notify described first mobile switching centre's local exchange not start;
When described caller and called under same controller, but the caller under described the second mobile switching centre or called being lawfully intercepted, or when generation and the afoul supplementary service of local exchange, determine and do not meet the condition of setting up local exchange, notify described the first mobile switching centre to forbid local exchange
4. method as claimed in claim 3, is characterized in that, described the second mobile switching centre receives the local exchange execution result that described controller returns, and described execution result is sent to described the first mobile switching centre.
5. method as claimed in claim 2 or claim 3, is characterized in that, it is information request (INR) message that described the second mobile switching centre receives the message that the first mobile switching centre sends.
6.Yi Zhong mobile switching centre, is characterized in that, comprising:
Judging unit, need to start local exchange for judging whether;
Construction unit, while for judgment result is that being, builds message, described message comprise that described mobile switching centre controls the sign of calling branch, and the sign that need set up the controller of local exchange;
Transmitting element, for sending described message to the second mobile switching centre, so that described the second mobile switching centre determines, meet while setting up the condition of local exchange, notify described controller to set up local exchange according to the sign of the calling branch of described mobile switching centre control;
Described mobile switching centre also comprises:
Receiving element, the initial address message sending for receiving described the second mobile switching centre;
Described judging unit is when judging the sign of the controller that whether comprises in described initial address message that calling branch that the second mobile switching centre controls is corresponding, when described initial address message comprises the sign of the controller that calling branch that the second mobile switching centre controls is corresponding, determine that described the second mobile switching centre supports local exchange; Or, judge that caller and called calling branch are whether under same controller, and/or, judge caller or called whether being lawfully intercepted under described the first mobile switching centre, whether occur and the afoul supplementary service of local exchange.
7.Yi Zhong mobile switching centre, is characterized in that, comprising:
The first receiving element, the message sending for receiving the first mobile switching centre, described message comprises the sign of the calling branch that the first mobile switching centre controls, and the sign that need set up the controller of local exchange;
Judging unit, for judging whether to meet the condition of setting up local exchange;
Notification unit, while setting up the condition of local exchange for determine meeting when judging unit, notifies the sign of the calling branch that described controller controls according to described the first mobile switching centre to set up local exchange;
Described judging unit judges caller and called whether under same controller specifically for the sign of controller corresponding to the calling branch setting up the sign of the controller of local exchange according to described need and control with described the second mobile switching centre, caller under described the second mobile switching centre or called whether being lawfully intercepted, and whether occur and the afoul supplementary service of local exchange;
When described caller and called under same controller, and the caller under described the second mobile switching centre or be not calledly lawfully intercepted, while not occurring with the afoul supplementary service of local exchange yet, determine and meet the condition of setting up local exchange, indicate described notification unit to notify described controller to set up local exchange according to described caller and called calling branch sign.
8. mobile switching centre as claimed in claim 7, is characterized in that, also comprises:
Transmitting element, for judge described caller and called not in same controller lower time when described judging unit, sends first mobile switching centre's local exchange described in message informing to described the first mobile switching centre and does not start; Or, for judging described caller and called under same controller when described judging unit, but the caller under described the second mobile switching centre or called being lawfully intercepted, or when generation and the afoul supplementary service of local exchange, to described the first mobile switching centre, send the first mobile switching centre described in message informing and forbid local exchange.
9. mobile switching centre as claimed in claim 8, is characterized in that, also comprises:
The second receiving element, the local exchange execution result returning for receiving described controller;
Described transmitting element is also for sending to described execution result described the first mobile switching centre.
10. a system of setting up local exchange, is characterized in that, comprising: mobile switching centre as claimed in claim 6 and as arbitrary in claim 7-9 as described in the second mobile switching centre.
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| CN200910189248.6A CN102104979B (en) | 2009-12-22 | 2009-12-22 | Method, device and system for establishing local exchange |
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| DE102004020651A1 (en) * | 2004-04-22 | 2005-11-17 | Siemens Ag | Fail-safe method for network nodes in a communications network interlinks network nodes in the communications network into a cluster |
| CN101159905A (en) * | 2007-11-07 | 2008-04-09 | 华为技术有限公司 | Local exchange method, core network equipment and network system of implementing in base station controller |
| CN101553042A (en) * | 2008-04-03 | 2009-10-07 | 华为技术有限公司 | Method, system and equipment for selecting gateway |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004020651A1 (en) * | 2004-04-22 | 2005-11-17 | Siemens Ag | Fail-safe method for network nodes in a communications network interlinks network nodes in the communications network into a cluster |
| CN101159905A (en) * | 2007-11-07 | 2008-04-09 | 华为技术有限公司 | Local exchange method, core network equipment and network system of implementing in base station controller |
| CN101553042A (en) * | 2008-04-03 | 2009-10-07 | 华为技术有限公司 | Method, system and equipment for selecting gateway |
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