CN100428841C - Method for solving terminal repeating switch - Google Patents
Method for solving terminal repeating switch Download PDFInfo
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- CN100428841C CN100428841C CNB2004100854126A CN200410085412A CN100428841C CN 100428841 C CN100428841 C CN 100428841C CN B2004100854126 A CNB2004100854126 A CN B2004100854126A CN 200410085412 A CN200410085412 A CN 200410085412A CN 100428841 C CN100428841 C CN 100428841C
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- terminal
- handoff request
- wireless local
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Abstract
The present invention discloses a method for solving the problem of repeated switches at a terminal, which is characterized in that a timer is arranged at a network side of a wireless local network. The method for solving the problem of repeated switches at a terminal comprises the steps that A. the terminal initiates a switch request to the network side of the local network; B. the network side of the local network starts the timer for timing and judges whether the timer receives a second-time switch request initiated by the terminal or not when the time is up; if the timer receives the second-time switch request, the step C is turned to; otherwise, the network side of the local network does not switch the terminal, and the calling of the terminal continues; C. the network side of the local network switches the terminal according to the second-time switch request, and the terminal continues to make calls after reaching a switched region. The method for solving the problem of repeated switches at a terminal can realize the goal that the terminal does not carry out frequent switches when a calling signal drifts or conflicts with calling signals from other base stations; thus, the judgment times of roaming limitation, which aim at the terminal and are accompanied by switches, are reduced, and the resources of the wireless local network are saved.
Description
Technical field
The present invention relates to terminal handoff technique in the wireless local net, particularly a kind of method that solves the terminal repeating switching.
Background technology
A lot of wireless local network operation business are arranged at present, it has the right of operation wireless local net, but can not run mobile network, in the relatively stricter place of control, require the random zone of terminal can not surpass sub-district, single base station scope or the many base stations scope that this wireless local network operation business is administered, going beyond the scope to provide the call business service to terminal.This situation is referred to as the roaming restriction of terminal.
Exist a lot of methods realizations to judge now based on the roaming restriction of the terminal of sub-district, single base station or many base stations.
Fig. 1 is wherein a kind of process flow diagram of realizing that restriction is judged to terminal roaming of prior art, the roaming restricted area tabulation that will be stored in the contracting terminal of attaching position register (HLR) in advance is handed down to center (MSC) in the mobile exchange of administering this terminal, and be stored in the Visited Location Registor (VLR) of this MSC, its concrete steps are:
Process according to Fig. 1 just can have been judged the roaming restriction of terminal.But the environmental change of terminal in moving process is very fast, especially terminal is in the overlay region that is in two base stations, as when being in base station A and base station B, current probably terminal is in the overlay area of base station A, along with the accidental conflict that floats to base station B or be subjected to base station B call signal of signal, cause terminal to switch to base station B by base station A, then along with base station A is switched back in the recovery of base station A call signal again, the roaming restriction that all must be accompanied by terminal of switching is repeatedly like this judged, make the roaming restriction deterministic process of terminal is carried out repeatedly in the zone of base station A and base station B covering respectively at short notice, this is very difficult and carries out repeatedly the resource of having wasted the wireless local net is judged in the roaming restriction of terminal.
As can be seen from the above analysis, when terminal is in the overlay region of a plurality of base stations covering, can frequently switch, judge, resource very difficult and that wasted the wireless local net be judged in the roaming restriction of terminal thereby make thereby frequently roam restriction.Further, because it is because mobile or signal drift or the switching that causes when being subjected to the conflict of other base station call signals that prior art can't be distinguished when terminal is in the overlay region that a plurality of base stations cover, such situation may appear: when the call signal of terminal floats to non-signing-contract field by signing-contract field, but switch back signing-contract field in a short period of time again, can cause call clearing because switching follows roaming to limit judgement this moment when terminal switches to non-signing-contract field.
Summary of the invention
In view of this, main purpose of the present invention is to provide on the one hand a kind of method that terminal repeating switches that solves, this method can realize when call signal drift or when being subjected to the conflict of other base station call signals terminal frequently do not switch, follow the roaming restriction to terminal of switching to judge that number of times reduces, and saves the resource of wireless local net thereby make.Further, realize when call signal when signing-contract field floats to non-signing-contract field, solve owing to switch and follow roaming to limit the call clearing that judgement can cause.
According to above-mentioned purpose, technical scheme of the present invention is achieved in that
A kind of method that solves the terminal repeating switching is provided with timer at wireless local net network side, and this method also comprises: A, terminal are initiated handoff request to wireless local net network side;
B, wireless local net network side start timer regularly, judge at timer to the handoff request once more of whether receiving that constantly this terminal is initiated, if change step C over to; Otherwise wireless local net network side does not switch this terminal, and the calling of terminal is proceeded;
C, wireless local net network side switch this terminal according to handoff request once more, and this terminal continues to call out to the back, zone that will switch.
Described timer is arranged in the mobile switching centre of wireless local net network side.
The described timer of the step B time regularly sets in advance according to configuring condition, the call signal drift of current wireless local network and time limit of conflict of being subjected to the base station call signal of non-current region.
The described handoff request of steps A carries the area information of all sub-districts of the current activation of terminal;
Before step B, this method also comprises: the wireless local net network side that receives this handoff request judges whether the area information that this handoff request is carried is included among the roaming restricted area tabulation of this terminal of storing in advance, if, this terminal is switched in the sub-district of its request, this terminal continues to call out to the back, zone that will switch; Otherwise, execution in step B.
The described handoff request once more of step B carries the area information that terminal activates all sub-districts once more; After step B, before the step C, also comprise: receive this once more the wireless local net network side of handoff request judge this once more the area information that carries of handoff request whether be included among the roaming restricted area tabulation of this terminal of storage in advance, if, execution in step C; Otherwise, this terminal is torn open call treatment;
The described wireless local net of step C network side switches this terminal according to handoff request once more: according to this once more the area information that carries of handoff request this terminal is switched in the sub-district of its request.
From such scheme as can be seen, the present invention is provided with timer at network side, receiving to be owing to the drift of call signal or when being subjected to handoff request that the conflict of other base station call signals initiates first, network side is not handled, if but whether judgement receives handoff request once more in the time regularly, switch accordingly again.Therefore, method provided by the invention can realize that terminal is not frequently switched when call signal is drifted about, and follows the roaming restriction to terminal of switching to judge that number of times reduces, and saves the resource of wireless local net thereby make.Further, the present invention combines with such scheme with to the roaming of terminal restriction deterministic process, realize when call signal when signing-contract field floats to non-signing-contract field, solve owing to switch and follow roaming to limit the call clearing that judgement can cause.
Description of drawings
Fig. 1 is wherein a kind of process flow diagram of realizing that restriction is judged to terminal roaming of prior art.
Fig. 2 realizes the method flow diagram that terminal is not frequently switched for the present invention.
Fig. 3 for the present invention realize when call signal when signing-contract field floats to non-signing-contract field, solve owing to switch the method flow diagram of following roaming to limit the call clearing that judgement can cause.
Fig. 4 for the present invention realize when call signal when signing-contract field floats to non-signing-contract field, solve owing to switch the embodiment schematic diagram of following roaming to limit the call clearing that judgement can cause.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is further elaborated.
Core concept of the present invention is: the wireless local net network side in the administration terminal is provided with timer in advance, when initiating handoff request, terminal starts timer, judgement is before timer expiry, whether terminal initiates handoff request once more, if, switch according to the handoff request that sends once more, terminal continues to call out after switching to the zone that will switch again; Otherwise, not switch, the calling of terminal is proceeded.
The present invention must be provided with a timer at the wireless local net network side of administration terminal, and this timer can be arranged among the MSC of the wireless local net network side of administering terminal.
Fig. 2 realizes the method flow diagram that terminal is not frequently switched for the present invention, and its concrete steps are:
When terminal moves to another sub-district of other BSC administrations from this sub-district, will initiate handoff request to MSC by the BSC under the current region, the handoff request of another cell area information is carried in this request;
When the overlapping region of terminal, can initiate the handoff request of having carried two different districts area informations to MSC at two different B different districts that SC administers;
After step 201, MSC receive this handoff request, start timer regularly;
Length of timer MSC can be pre-configured, also can revise configuration according to actual conditions, the value source that this concrete timer duration neither one is determined;
But generally, the time regularly can set in advance according to configuring condition, the call signal drift of current wireless local network and the time limit that is subjected to the conflict of other base station call signals;
If terminal network side when initiating to switch does not switch or switch unsuccessful words to it, terminal can be initiated to switch once more;
From method that Fig. 2 narrated as can be seen, this method is provided with timer at the network side of wireless local net, receiving to be owing to the drift of call signal or when being subjected to handoff request that the conflict of other base station call signals initiates first, network side is not handled, if but whether judgement receives handoff request once more in the time regularly, handle accordingly again.Therefore, method provided by the invention can realize that terminal is not frequently switched when call signal is drifted about, and follows the roaming restriction to terminal of switching to judge that number of times reduces, and saves the resource of wireless local net thereby make.
Further, the present invention can also combine with method that Fig. 2 narrated with to the roaming restriction deterministic process of terminal, realize when call signal when signing-contract field floats to non-signing-contract field, solve owing to switch and follow roaming to limit the call clearing that judgement can cause.
Fig. 3 for the present invention realize when call signal when signing-contract field floats to non-signing-contract field, solve owing to switch the method flow diagram of following roaming to limit the call clearing that judgement can cause, its concrete steps are:
When terminal moves to another sub-district of other BSC administrations from this sub-district, will initiate handoff request to MSC by the BSC under the current region, the area information of another sub-district is carried in this request;
When the overlapping region of terminal, can initiate the handoff request of having carried two different districts area informations to MSC at two different B different districts that SC administers;
Time regularly can set in advance according to configuring condition, the call signal drift of current wireless local network and the time limit that is subjected to the conflict of other base station call signals;
To the handoff request once more that judges whether constantly to receive that this terminal is initiated, this handoff request has been carried the All Ranges information that terminal activates once more, if change step 305 at timer for step 304, MSC; Otherwise, change step 308 over to;
From the narration of Fig. 3 as can be seen, when terminal is initiated handoff request and this handoff request and this terminal will be switched to its non-signing-contract field, the network side of wireless local net is not carried out this processing, but timer is set regularly, if judge in the time regularly and whether receive handoff request once more, handle accordingly again: if handoff request still will switch to terminal non-signing-contract field once more, remove the processing of current calling again, otherwise, switch to signing-contract field, keep the continuation of calling out.Therefore, method provided by the invention when call signal when signing-contract field floats to non-signing-contract field, solve owing to switch the call clearing of following roaming restriction judgement to cause.
Be worth explanation any be, though the handoff request first that the network side of wireless local net does not have processing terminal to initiate, but terminal also is in the state that continues of calling out, this be because: terminal is when initiating first handoff request, it can not directly stride into another sub-district from a sub-district, but earlier in current calling sub-district with want the overlapping region of switching cell again to the sub-district that will switch; When terminal was in the overlapping region, when the call signal of terminal was carried out of short duration drift or is subjected to wanting the conflict of call signal of switching cell, terminal can also be received the signal that current area is called out.
Below lift the method for specific embodiment explanation Fig. 3 narration of the present invention.
Fig. 4 for the present invention realize when call signal when signing-contract field floats to non-signing-contract field, solve owing to switch the embodiment schematic diagram of following roaming to limit the call clearing that judgement can cause, as shown in the figure:
Suppose that terminal A is limited at the sub-district A roaming under the MSC1, terminal A can't carry out caller and called after going out sub-district A.
The present invention at first in HLR contracting terminal A limit the zone of roaming: MSC1+ sub-district A, HLR send to the roaming restricted area tabulation of this terminal among the VLR of MSC of this terminal of administration and preserve.
When terminal A is current when calling out and being in the overlay region of sub-district A and sub-district B, the call signal of terminal A drift or run into the conflict of sub-district B call signal and cause terminal A will switch to sub-district B then initiates to carry the handoff request in B zone, sub-district to MSC by the BSC under the A of sub-district.MSC judges that according to the roaming restricted area tabulation of this terminal that VLR preserves B zone in sub-district is non-signing-contract field, then starts timer regularly, is timed to constantly at timer, and there will be two kinds of situations, and the present invention handles accordingly according to both of these case:
1, be timed to constantly or then at timer, MSC receives the handoff request that switches to A that terminal A initiates, and stops timer, calls out and continues;
2, timer is regularly overtime or received the handoff request of carrying B zone, sub-district at timer again then, and does not receive the handoff request that switches to A, then removes this calling.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1, a kind of method that solves the terminal repeating switching is characterized in that at wireless local net network side timer is set, this method also comprises:
A, terminal are initiated handoff request to wireless local net network side;
B, wireless local net network side start timer regularly, judge at timer to the handoff request once more of whether receiving that constantly this terminal is initiated, if change step C over to; Otherwise wireless local net network side does not switch this terminal, and the calling of terminal is proceeded;
C, wireless local net network side switch this terminal according to handoff request once more, and this terminal continues to call out to the back, zone that will switch.
2, the method for claim 1 is characterized in that, described timer is arranged in the mobile switching centre of wireless local net network side.
3, the method for claim 1, it is characterized in that the described timer of the step B time regularly sets in advance according to configuring condition, the call signal drift of current wireless local network and time limit of conflict of being subjected to the base station call signal of non-current region.
4, the method for claim 1 is characterized in that, the described handoff request of steps A carries the area information of all sub-districts of the current activation of terminal;
Before step B, this method also comprises: the wireless local net network side that receives this handoff request judges whether the area information that this handoff request is carried is included among the roaming restricted area tabulation of this terminal of storing in advance, if, this terminal is switched in the sub-district of its request, this terminal continues to call out to the back, zone that will switch; Otherwise, execution in step B.
As claim 1 or 4 methods of being narrated, it is characterized in that 5, the described handoff request once more of step B carries the area information that terminal activates all sub-districts once more;
After step B, before the step C, this method also comprises: receive this once more the wireless local net network side of handoff request judge this once more the area information that carries of handoff request whether be included among the roaming restricted area tabulation of this terminal of storage in advance, if, execution in step C; Otherwise, this terminal is torn open call treatment;
The described wireless local net of step C network side switches this terminal according to handoff request once more: according to this once more the area information that carries of handoff request this terminal is switched in the sub-district of its request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100854126A CN100428841C (en) | 2004-09-30 | 2004-09-30 | Method for solving terminal repeating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100854126A CN100428841C (en) | 2004-09-30 | 2004-09-30 | Method for solving terminal repeating switch |
Publications (2)
| Publication Number | Publication Date |
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| CN1756430A CN1756430A (en) | 2006-04-05 |
| CN100428841C true CN100428841C (en) | 2008-10-22 |
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| CNB2004100854126A Expired - Fee Related CN100428841C (en) | 2004-09-30 | 2004-09-30 | Method for solving terminal repeating switch |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101179843B (en) * | 2006-11-06 | 2010-05-19 | 华为技术有限公司 | Packet switch method and communication appliance |
| CN103731807B (en) * | 2013-12-17 | 2017-01-25 | 江苏省公用信息有限公司 | Roaming welcome short message sending method based on LAC switching signals |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998048528A1 (en) * | 1997-04-24 | 1998-10-29 | Ntt Mobile Communications Network Inc. | Mobile communication method and mobile communication system |
| CN1269684A (en) * | 1999-04-07 | 2000-10-11 | 株式会社东芝 | Mobile terminal having function of asking for switching-over, switching-over control apparatus and method and storage medium |
| US6377563B1 (en) * | 1997-07-10 | 2002-04-23 | Electronics And Telecommunications Research Institute | Method for handoffing in a code devision multiple access mobile communication system |
| CN1430341A (en) * | 2001-12-28 | 2003-07-16 | 株式会社东芝 | Radio communication device, radio communication method and radio communication system used by it |
-
2004
- 2004-09-30 CN CNB2004100854126A patent/CN100428841C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998048528A1 (en) * | 1997-04-24 | 1998-10-29 | Ntt Mobile Communications Network Inc. | Mobile communication method and mobile communication system |
| US6377563B1 (en) * | 1997-07-10 | 2002-04-23 | Electronics And Telecommunications Research Institute | Method for handoffing in a code devision multiple access mobile communication system |
| CN1269684A (en) * | 1999-04-07 | 2000-10-11 | 株式会社东芝 | Mobile terminal having function of asking for switching-over, switching-over control apparatus and method and storage medium |
| CN1430341A (en) * | 2001-12-28 | 2003-07-16 | 株式会社东芝 | Radio communication device, radio communication method and radio communication system used by it |
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| CN1756430A (en) | 2006-04-05 |
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Granted publication date: 20081022 Termination date: 20120930 |