CN101500321B - Call connection establishing method - Google Patents
Call connection establishing method Download PDFInfo
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- CN101500321B CN101500321B CN2008100060986A CN200810006098A CN101500321B CN 101500321 B CN101500321 B CN 101500321B CN 2008100060986 A CN2008100060986 A CN 2008100060986A CN 200810006098 A CN200810006098 A CN 200810006098A CN 101500321 B CN101500321 B CN 101500321B
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Abstract
The invention provides a method for setting up the call connection, comprising the following steps: a base station carries out the office-direction choice of MSC (Mobile Switching Center) by a cell identifying affiliation office-direction choice mode after receiving the call message from the terminal; the base station carries out the office-direction choice of MSC (Mobile Switching Center) by a balanced load office-direction choice mode when the cell identifying affiliation office-direction choice mode is failure; and the base station sets up the call connection with the MSC by the chosen office direction and further sets up the call connection between the terminal and the MSC after completing the office-direction choice of MSC. The invention can set up call connection in accordance with the compatibility, the calling success ratio, the link balanced load and the like.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of call connection establishing method.
Background technology
Under the traditional group net mode of mobile communication system, base station controller (Base Station Controller, be called for short the BSC base station controller) have only one in abutting connection with mobile switching centre's (Mobile Switching Center is called for short MSC) office direction, shown in Figure 1A.But along with the scale of communication system constantly enlarges, the independent development that each network element is also relative no longer only is confined to traditional networking mode between BSC and the MSC.In order to satisfy specific demand, some new networking modes have appearred, and for example, Figure 1B shows a kind of mode that adopts many office directions to be connected between single BSC and the single MSC.This networking mode is mainly used in the limited ability of big capacity BSC under the situation of the signaling link bandwidth that MSC supported, in this way, BSC has taken a plurality of office direction signaling links of same MSC, thereby given full play to the disposal ability of big capacity BSC, and the direct-cut operation between original a lot of BSC is converted to soft handover in the BSC, brought a lot of usefulness to operator.
In the angle of MSC, this many office directions butt joint networking modes and traditional networking mode are as broad as long, but very big in the difference of BSC side.No. seven links of the bottom of BSC are realized this mode by disposing a plurality of different Original Signaling Points, are mapped to the upper layer software (applications) of BSC, are exactly a plurality of different office directions number.So briefly, this networking mode is called the multiple signaling points networking mode for No. seven links of bottom, and belongs to many office directions docking mode for the BSC upper layer software (applications).
Under the situation of this many office directions butt joint, the problem that the BSC upper layer software (applications) will be faced is: when needs when MSC sends signaling message, how to select the MSC office direction and select as flexible way how.The method of at present existing multiple choices office direction is dealt with the networking mode of this many office directions:
Method one, utilize hash method in available a plurality of office directions, evenly to select, be referred to as " load equalization method ", the benefit of this method maximum is the load balancing that guarantees signaling link, and has improved call successful rate (as long as there is an office direction to use, just can finish call setup) as far as possible, but its drawback is arranged also, be exactly can't the compatible to greatest extent MSC of different vendor processing mode, if because MSC the attaching relation of sub-district and base station is judged, then can not make in this way.
Method two, just because of considered the processing mode problem of MSC, just there has been another to be referred to as the method for " cell ID (Cell Identifier; be called for short CI) ownership office direction ", it is the attaching relation of pre-configured sub-district of base station system and office direction, so just can think " office direction is exactly a BSC ", avoid the drawback of method one.But also can't bring into play the advantage of method one on the link load problem simultaneously, must increase the complexity of cutover engineering.When moreover if the office direction of certain sub-district ownership is unavailable, just can't rises and exhale, can not be as the smooth foundation of method one assurance calling.
As seen, these methods all have its advantage and drawback, select flexibly, use flexibly as several different methods how, have become BSC side upper layer software (applications) to press for the problem of solution just give full play to the advantage of each method.
Summary of the invention
The invention provides a kind of call connection establishing method, under the condition of taking into account many-sides considerations such as compatibility, call successful rate, link load equilibrium, to call out establishment of connection.
A kind of call connection establishing method according to the embodiment of the invention may further comprise the steps: after the base station receives the message related to calls of self terminal, carry out the office direction of mobile switching centre by cell ID ownership office direction selection mode and select; Using cell ID ownership office direction selection mode to select under the situation of failure, the base station is selected by the office direction that load balancing office direction selection mode carries out mobile switching centre; And after the office direction of finishing mobile switching centre was selected, the base station was connected with the calling of mobile switching centre by selected office direction foundation, and then set up terminal and be connected with calling between the mobile switching centre.
Wherein, in cell ID ownership office direction selection mode, the base station is carried out the office direction of mobile switching centre and is selected according to the attaching relation between the office direction of pre-configured sub-district, terminal place and mobile switching centre.In load balancing office direction selection mode, the base station utilizes hash algorithm evenly to select in a plurality of available office direction of mobile switching centre.
Another kind of call connection establishing method according to the embodiment of the invention, may further comprise the steps: after the base station received the message related to calls of self terminal, the office direction selection mode of decision operation maintenance centre configuration was load balancing office direction selection mode, or force cell ID ownership office direction selection mode or priority cell sign ownership office direction selection mode; And if the office direction selection mode of operation maintenance center's configuration is a load balancing office direction selection mode, then the base station is selected by the office direction that load balancing office direction selection mode carries out mobile switching centre, otherwise the base station is selected by the office direction that cell ID ownership office direction selection mode carries out mobile switching centre; After the office direction of finishing mobile switching centre was selected, the base station was connected with the calling of mobile switching centre by selected office direction foundation, and then set up terminal and be connected with calling between the mobile switching centre.
Wherein, in cell ID ownership office direction selection mode, the base station is carried out the office direction of mobile switching centre and is selected according to the attaching relation between the office direction of pre-configured sub-district, terminal place and mobile switching centre.In load balancing office direction selection mode, the base station utilizes hash algorithm evenly to select in a plurality of available office direction of mobile switching centre.In priority cell sign ownership office direction selection mode, the office direction selection of mobile switching centre is carried out by cell ID ownership office direction selection mode earlier in the base station, if select failure, then further carry out the office direction selection of mobile switching centre by load balancing office direction selection mode.
Wherein, if failure is selected by the office direction that cell ID ownership office direction selection mode carries out mobile switching centre in the base station, then the office direction selection mode of the further decision operation in base station maintenance centre configuration is to force cell ID ownership office direction selection mode, or priority cell sign ownership office direction selection mode.If the office direction selection mode of the further decision operation in base station maintenance centre configuration is a priority cell sign ownership office direction selection mode, then the office direction selection of mobile switching centre is further carried out in the base station by load balancing office direction selection mode.
The present invention can call out establishment of connection under the condition of taking into account many-sides considerations such as compatibility, call successful rate, link load equilibrium.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Figure 1A and Figure 1B are the networking mode schematic diagrames between MSC and the BSC;
Fig. 2 is a position view of selecting the office direction method to work in call flow;
Fig. 3 is the flow chart according to the MSC office direction system of selection of the embodiment of the invention.
Embodiment
The present invention mainly is the deficiency at ownership office direction system of selection of the CI in the existing call setup flow process and load balancing office direction system of selection existence, has proposed the MSC office direction system of selection of a kind of preferential CI ownership office direction system of selection.In addition, the present invention has taken into account the independent use of original two kinds of MSC office directions system of selection simultaneously, thereby has reached effect flexibly by operation maintenance center's (Operation Maintenance Centre is called for short OMC) of base station.
That is to say that one has had three kinds of office direction systems of selection in base station system: " system of selection of preferential CI ownership office direction ", " forcing the system of selection of CI ownership office direction ", " forcing load balancing office direction method ".Use which kind of method by the decision of OMC system, can artificially dispose, convenient, flexible.Briefly introduce the applicable situation of these three kinds of methods below:
In forcing the system of selection of CI ownership office direction, only select office direction by the system of selection of CI ownership office direction, with the result of the method as final result.The method is applicable to the situation that clear and definite known MSC can judge the corresponding relation between sub-district and the base station.Come this processing mode of compatible MSC with this.
In forcing the system of selection of load balancing office direction, only press load equalization method selection office direction, with the result of the method as final result.The method is applicable to the situation that clear and definite known MSC can not judge the corresponding relation between sub-district and the base station.With this advantage of bringing into play the link load equilibrium and improving call successful rate.
In the system of selection of preferential CI ownership office direction, use the system of selection of CI ownership office direction to select office direction earlier, if success then selects office direction to finish; If failure is pressed load equalization method again and is selected office direction.The method is applicable to the situation how uncertain MSC can handle, and the both compatible processing mode of MSC has guaranteed access success and link load equilibrium again when the ownership office direction is unavailable.
Usually, the base station is as the system of selection of giving tacit consent to the system of selection of preferential CI ownership office direction, because this method has been taken into account many-sided considerations such as compatibility, call successful rate, link load equilibrium, therefore is adapted at most using in beginning first.
That is to say, may further comprise the steps: after the base station receives the message related to calls of self terminal, carry out the office direction of mobile switching centre by cell ID ownership office direction selection mode and select according to the call connection establishing method of the embodiment of the invention; Using cell ID ownership office direction selection mode to select under the situation of failure, the base station is selected by the office direction that load balancing office direction selection mode carries out mobile switching centre; And after the office direction of finishing mobile switching centre was selected, the base station was connected with the calling of mobile switching centre by selected office direction foundation, and then set up terminal and be connected with calling between the mobile switching centre.
Particularly, when the embedded call processing module of base station system is received access (rise and exhale or the page response) message of portable terminal, select the MSC office direction at once, the position as shown in Figure 2 in call flow.Select office direction in which way, depend on the mode of OMC configuration, the program in the embedded call processing model need be taken into account three kinds of selection modes, the flow process that different configuration operations is different simultaneously.Wherein, the method for employing " secondary judgement selection mode " realizes " system of selection of preferential CI ownership office direction " this method, and the specific procedure flow process may further comprise the steps as shown in Figure 3:
S302, office direction is selected beginning, carries out the judgement of selection mode for the first time, belongs to the office direction system of selection or forces the system of selection of CI ownership office direction if judged result is preferential CI, then changes step S304; If judged result is then changeed step S310 for forcing the system of selection of load balancing office direction.
S304 presses CI ownership office direction method and selects office direction.
S306 judges whether the selection result of S304 is successful, if step S312 is then changeed in success, office direction is selected to finish; If step S308 is then changeed in failure, carry out the secondary of office direction selection mode and judge.
S308 carries out the judgement of selection mode for the second time, if selection mode is the system of selection of preferential CI ownership office direction, then changes step S310, and the applied load equalization methods is selected office direction; If selection mode then changes step S312 for forcing the system of selection of CI ownership office direction, office direction is selected to finish.
S310 presses load equalization method and selects office direction.
S312, office direction is selected to finish.
Sum up the said procedure flow process, can draw to draw a conclusion:
If the system of selection of OMC configuration preference CI ownership office direction, and utilize the system of selection of CI ownership office direction successfully to select office direction, then program running flow process is: S302-〉S304-〉S306-〉S312;
If OMC configuration preference CI ownership office direction system of selection, and utilize the system of selection of CI ownership office direction to select the office direction failure, but utilize the system of selection of load balancing office direction successfully to select office direction, then program running flow process is: S302-〉S304-〉S306-〉S308-〉S310 (success)-S312;
If OMC configuration preference CI ownership office direction system of selection, and utilize the system of selection of CI ownership office direction to select the office direction failure, utilize the system of selection of load balancing office direction to select office direction also to fail, then program running flow process is: S302-〉S304-〉S306-〉S308-〉S310 (failure)-S312;
If the system of selection of CI ownership office direction is forced in the OMC configuration, and utilize the system of selection of CI ownership office direction successfully to select office direction, then program running flow process is all: S302-〉S304-〉S306-〉S312;
If the system of selection of CI ownership office direction is forced in the OMC configuration, and utilize the system of selection of CI ownership office direction to select the office direction failure, then program running flow process is: S302-〉S304-〉S306-〉S308-〉S312;
If the system of selection of load balancing office direction is forced in the OMC configuration, and utilizes the system of selection of load balancing office direction successfully to select office direction, then program running flow process is: S302-〉S310 (success)-S312;
If the system of selection of load balancing office direction is forced in the OMC configuration, and utilize and force the system of selection of load balancing office direction to select the office direction failure, then program running flow process is: S302-〉S310 (failure)-S312.
That is to say, another kind of call connection establishing method according to the embodiment of the invention may further comprise the steps: after the base station received the message related to calls of self terminal, the office direction selection mode of decision operation maintenance centre configuration was load balancing office direction selection mode, or cell ID ownership office direction selection mode or priority cell sign ownership office direction selection mode; And if the office direction selection mode of operation maintenance center's configuration is a load balancing office direction selection mode, then the base station is selected by the office direction that load balancing office direction selection mode carries out mobile switching centre, otherwise the base station is selected by the office direction that cell ID ownership office direction selection mode carries out mobile switching centre; After the office direction of finishing mobile switching centre was selected, the base station was connected with the calling of mobile switching centre by selected office direction foundation, and then set up terminal and be connected with calling between the mobile switching centre.
Wherein, if failure is selected by the office direction that cell ID ownership office direction selection mode carries out mobile switching centre in the base station, then the office direction selection mode of the further decision operation in base station maintenance centre configuration is cell ID ownership office direction selection mode, or priority cell sign ownership office direction selection mode.If the office direction selection mode of the further decision operation in base station maintenance centre configuration is a priority cell sign ownership office direction selection mode, then the office direction selection of mobile switching centre is further carried out in the base station by load balancing office direction selection mode.
The present invention can be applied to the BSC network element that cdma system is supported multiple signaling points, and can provide the flexible counter-measure of multiple uncertain condition carrying out many office directions when docking with the MSC of different vendor.In addition,, the present invention can strengthen the adaptive ability of multiple signaling points BSC network element, thus having guaranteed that this BSC docks smoothly with many office directions of the MSC of other manufacturers carries out.
The above is embodiments of the invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (9)
1. a call connection establishing method is characterized in that, may further comprise the steps:
After the base station receives the message related to calls of self terminal, carry out the office direction of mobile switching centre by cell ID ownership office direction selection mode and select;
Using described cell ID ownership office direction selection mode to select under the situation of failure, described base station is selected by the office direction that load balancing office direction selection mode carries out described mobile switching centre; And
After the office direction of finishing described mobile switching centre was selected, described base station was connected with the calling of described mobile switching centre by selected office direction foundation, and then set up described terminal and be connected with calling between the described mobile switching centre.
2. call connection establishing method according to claim 1, it is characterized in that, in described cell ID ownership office direction selection mode, described base station is carried out the office direction of described mobile switching centre and is selected according to the attaching relation between the office direction of pre-configured sub-district, described terminal place and described mobile switching centre.
3. call connection establishing method according to claim 2 is characterized in that, in described load balancing office direction selection mode, described base station utilizes hash algorithm evenly to select in a plurality of available office direction of described mobile switching centre.
4. a call connection establishing method is characterized in that, may further comprise the steps:
After the base station received the message related to calls of self terminal, the office direction selection mode of decision operation maintenance centre configuration was load balancing office direction selection mode, or force cell ID ownership office direction selection mode or priority cell sign ownership office direction selection mode; And
If the office direction selection mode of described operation maintenance center configuration is described load balancing office direction selection mode, then described base station is selected by the office direction that described load balancing office direction selection mode carries out mobile switching centre, otherwise described base station is selected by the office direction that cell ID ownership office direction selection mode carries out described mobile switching centre;
After the office direction of finishing described mobile switching centre was selected, described base station was connected with the calling of described mobile switching centre by selected office direction foundation, and then set up described terminal and be connected with calling between the described mobile switching centre.
5. method according to claim 4, it is characterized in that, in described cell ID ownership office direction selection mode, described base station is carried out the office direction of described mobile switching centre and is selected according to the attaching relation between the office direction of pre-configured sub-district, described terminal place and described mobile switching centre.
6. method according to claim 5 is characterized in that, in described load balancing office direction selection mode, described base station utilizes hash algorithm evenly to select in a plurality of available office direction of described mobile switching centre.
7. method according to claim 6, it is characterized in that, in described priority cell sign ownership office direction selection mode, described base station is selected by the office direction that described cell ID ownership office direction selection mode carries out described mobile switching centre earlier, if select failure, then further carry out the office direction selection of described mobile switching centre by described load balancing office direction selection mode.
8. according to each described method in the claim 4 to 7, it is characterized in that, if failure is selected by the office direction that described cell ID ownership office direction selection mode carries out described mobile switching centre in described base station, then described base station judges that further the office direction selection mode of described operation maintenance center configuration is described pressure cell ID ownership office direction selection mode, or described priority cell sign ownership office direction selection mode.
9. method according to claim 8, it is characterized in that, judge that the office direction selection mode of described operation maintenance center configuration is described priority cell sign ownership office direction selection mode if described base station is further, the office direction selection of described mobile switching centre is further carried out in then described base station by described load balancing office direction selection mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100060986A CN101500321B (en) | 2008-02-01 | 2008-02-01 | Call connection establishing method |
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| CN2008100060986A CN101500321B (en) | 2008-02-01 | 2008-02-01 | Call connection establishing method |
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| CN101500321B true CN101500321B (en) | 2011-11-23 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1882120A (en) * | 2005-11-28 | 2006-12-20 | 华为技术有限公司 | Wireless network end office and call switching method |
| CN101064907A (en) * | 2006-04-29 | 2007-10-31 | 中兴通讯股份有限公司 | Method for realizing base station selected mobile switching centre simulator of CDMA2000 system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1882120A (en) * | 2005-11-28 | 2006-12-20 | 华为技术有限公司 | Wireless network end office and call switching method |
| CN101064907A (en) * | 2006-04-29 | 2007-10-31 | 中兴通讯股份有限公司 | Method for realizing base station selected mobile switching centre simulator of CDMA2000 system |
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| CN101500321A (en) | 2009-08-05 |
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