CN101394587B - Call implementing method, device and system in MSC Pool networking - Google Patents

Call implementing method, device and system in MSC Pool networking Download PDF

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Publication number
CN101394587B
CN101394587B CN2007101521646A CN200710152164A CN101394587B CN 101394587 B CN101394587 B CN 101394587B CN 2007101521646 A CN2007101521646 A CN 2007101521646A CN 200710152164 A CN200710152164 A CN 200710152164A CN 101394587 B CN101394587 B CN 101394587B
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page
imsi
msc
response message
wmg
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CN101394587A (en
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鄂乌兰
王伟科
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2008/072413 priority patent/WO2009036708A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/24—Interfaces between hierarchically similar devices between backbone network devices

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Abstract

The invention relates to a paging implementation method in MSC Pool networking. All media gateways which are connected with an objective base station controller of the current paging record the corresponding relation between a mobile switching center and an international mobile user identification IMSI of the current paging; and the media gateways transmit paging response information according to the recorded corresponding relation. The embodiment further provides a relevant paging implementation device and a system in MSC Pool networking. The embodiment realizes that the paging response information can be sent to the mobile switching center which sends down the paging information by using the same IMSI no matter which media gateway transmits, so the calling can continue and the call loss is avoided.

Description

Achieving paging method, equipment and system in a kind of MSC Pool networking
Technical field
The present invention relates to communication technical field, relate in particular to achieving paging method, Apparatus and system in a kind of MSC Pool networking.
Background technology
At present, in 3GPP TS 23.236 agreements, propose " Pool district " this notion, had a plurality of MSC (mobile switching centre) to move concurrently in the Pool district, come to share jointly the business in the Pool district.Said a plurality of MSC is divided into a plurality of MSC groups, is referred to as MSC Pool respectively.
MSC Pool networking is compared main difference with traditional networking and is: a BSC (base station controller) can be connected a plurality of MSC simultaneously, and a plurality of MSC form Pool, and BSC realizes that with each interior MSC of Pool signaling is connected.This network configuration can improve network performance well, as realizing load sharing, reducing the switching of user's roaming etc.Realize that MSC Pool networking needs BSC to support 23.236, but owing in existing network, exist and do not support 23.236 BSC in a large number, this just need with BSC 23.236 on move on to MGW (WMG), act on behalf of support 23.236 by MGW.
The technical scheme that present prior art one addresses the above problem is:
Act on behalf of support 23.236 by MGW and realize the Pool networkings; MSC is during with IMSI (IMSI International Mobile Subscriber Identity) calling user, and MGW resolves descending beep-page message, notes the MSC corresponding relation of IMSI that parses and issuing page message; When MGW receives the page-response message of BSC response; Parse the IMSI in the page-response message, inquiry IMSI and MSC mapping table are transmitted to said MSC with this IMSI issuing page message to page-response message.
In realizing process of the present invention, the inventor finds that there is following shortcoming at least in said prior art one:
When 3GPP 23.236 agreements that realize gateway proxy realize MSC Pool networking; As shown in Figure 1, if a BSC connects a plurality of gateways, the beep-page message that carries IMSI is issued to MGW1 from MSC1; The corresponding relation of MGW1 record IMSI and MSC; Be transmitted to BSC (paging step) to beep-page message then, page-response message reports from another gateway MGW2, the last corresponding relation of searching less than IMSI and MSC of MGW2; Use node selection function to send to MSC2 (page response step) to page-response message, cause call failure.
Summary of the invention
The embodiment of the invention provides achieving paging method, equipment and system in a kind of MSC Pool networking, has guaranteed to call out the correct forwarding at WMG, improves call successful rate.
The embodiment of the invention realizes through following technical scheme:
Achieving paging method in a kind of MSC Pool networking comprises:
All WMGs that link to each other with current paging purpose base station controller receive the said mobile switching centre of mobile switching centre's broadcasting and the corresponding relation of IMSI International Mobile Subscriber Identity IMSI, and said WMG writes down the corresponding relation of said mobile switching centre and IMSI;
Said WMG is transmitted page-response message according to said recorded corresponding relation.
Achieving paging method in a kind of MSC Pool networking comprises:
All WMGs that link to each other with the purpose base station controller receive the beep-page message that mobile switching centres issue, and the said beep-page message of said gateway resolves obtains corresponding relation and the record of said mobile switching centre and IMSI;
Said WMG is transmitted page-response message according to said recorded corresponding relation.
Achieving paging method in a kind of MSC Pool networking comprises:
A WMG that links to each other with the purpose base station controller receives the beep-page message that mobile switching centre issues; The said beep-page message of said gateway resolves; Obtain corresponding relation and the record of mobile switching centre and IMSI; Said WMG is notified other WMGs that link to each other to the purpose base station controller with said corresponding relation, and said other WMGs write down the corresponding relation of said mobile switching centre and IMSI;
Said WMG is transmitted page-response message according to said recorded corresponding relation.
Achieving paging method in a kind of MSC Pool networking comprises:
All mobile switching centres among the MSC Pool receive the page-response message of WMG broadcasting, and whether dose this page-response message of expression in the said page-response message is the sign of WMG broadcasting;
Mobile switching centre among the said MSC Pool judges whether the paging into the current transmission of this mobile switching centre according to the IMSI International Mobile Subscriber Identity IMSI in the page-response message; When judgement is the paging of the current transmission of this mobile switching centre, then handle said page-response message.
Achieving paging method in a kind of MSC PooI networking comprises:
Mobile switching centre selects the first corresponding WMG issuing page message to give base station controller according to the IMSI International Mobile Subscriber Identity IMSI of current transmission paging; Said first WMG writes down the corresponding relation of said mobile switching centre and IMSI; The corresponding relation of IMSI and WMG is for to preestablish according to rule; Said pre-defined rule comprises: will form in the numeral of IMSI some bit digital according to the rules algorithm calculate, various computing result is corresponding to different WMGs;
Second WMG that receives page-response message confirms to transmit first WMG of said page-response message according to said pre-defined rule;
Said second WMG sends to first WMG with said page-response message;
Said first WMG sends to mobile switching centre with said page-response message.
A kind of mobile switching centre comprises the paging process unit, is used to send beep-page message, and the processing that paging receiving response message and completion are relevant with paging also comprises:
Radio unit is used for before said paging process unit sends beep-page message, and the IMSI and the corresponding relation of mobile switching centre of current paging is broadcast to all WMGs that link to each other with the purpose base station controller of current paging.
A kind of mobile switching centre comprises:
The unit is set, is used for whether representing the parameter of distributing paging the beep-page message setting of sending, have only a beep-page message to carry first parameter of expression distributing paging, other beep-page messages carry not second parameter of distributing paging of identical expression;
The paging delivery unit is used for the beep-page message that carries said parameter is issued to all WMGs that link to each other with the purpose base station controller.
A kind of WMG comprises:
Information identificating unit is used for according to the beep-page message that receives, and resolves and identifies IMSI International Mobile Subscriber Identity IMSI, mobile switching centre's sign and whether represent the parameter of distributing paging;
Judging unit is used for judging whether that according to said parameter needs issue said beep-page message;
The paging delivery unit is used to receive the judged result of said judging unit, issuing page message when judgement needs issuing page message.
A kind of WMG comprises:
Recognition unit is used for identifying IMSI and mobile switching centre's corresponding relation according to the beep-page message that receives;
Notification unit is used to obtain the said IMSI that identifies and mobile switching centre's corresponding relation, and notice is given other WMGs that link to each other with the purpose base station controller of current paging.
A kind of WMG comprises:
The page-response message receiving element is used for the paging receiving response message;
The page-response message radio unit is used for said page-response message is broadcast to all mobile switching centres of MSC Pool;
Special identifier is provided with the unit, and whether be used in the page-response message of sending this page-response message of expression being set is the sign of WMG broadcasting.
A kind of mobile switching centre comprises:
The information analysis unit; Be used for parsing IMSI information from the page-response message that receives; Judge whether paging according to said IMSI, when judgement is the paging of the current transmission of this mobile switching centre, receive said page-response message into the current transmission of this mobile switching centre;
The paging process unit is used to receive the judged result of said information analysis unit, judge receive said page-response message after, accept said page-response message and carry out the relevant processing of follow-up paging;
Said information analysis unit also comprises:
The identification (RNC-ID) analytic unit, whether this page-response message of the expression of carrying that is used for parsing said page-response message is the sign of WMG broadcasting;
Judging unit; Be used for judging according to the said sign that parses whether this page-response message is the message of WMG broadcasting; When judgement is the message of WMG broadcasting, and during the paging of the current transmission of Fei Ben mobile switching centre, then abandon said page-response message.
Achieving paging system in a kind of MSC Pool networking comprises:
Mobile switching centre; Be used for selecting corresponding WMG issuing page message according to the IMSI International Mobile Subscriber Identity IMSI of current transmission paging; The corresponding relation of IMSI and WMG is for to preestablish according to rule; Said pre-defined rule comprises: will form in the numeral of IMSI some bit digital according to the rules algorithm calculate, various computing result is corresponding to different WMGs;
WMG; Be used to transmit the paging related news; The corresponding relation of storage IMSI and mobile switching centre, and receiving page-response message, and when not having the corresponding IMSI of the page-response message of current reception and mobile switching centre's corresponding relation to write down; According to the definite WMG of transmitting said page-response message of the rule identical, said page-response message is transmitted to said definite WMG with said mobile switching centre.
A kind of WMG comprises:
Resolve memory cell; Be used for parsing IMSI and mobile switching centre's corresponding relation and storage from the beep-page message that receives; The corresponding relation of said IMSI and WMG is for to preestablish according to rule; Said pre-defined rule comprises: will form in the numeral of IMSI some bit digital according to the rules algorithm calculate, various computing result is corresponding to different WMGs;
The WMG selected cell; Be used for after receiving page-response message; And when not having corresponding IMSI and mobile switching centre's corresponding relation record in the said parsing memory cell; Select to transmit the WMG of said page-response message according to the rule of the selection WMG identical, and the page-response message of said reception is transmitted to the WMG of said selection with mobile switching centre.
Technical scheme by the invention described above embodiment provides can be found out; The embodiment of the invention is the MSCPool networking, when base station controller connects a plurality of WMG, with the processing procedure of IMSI calling user; Realized no matter page-response message through which WMG is transmitted; Can send in the mobile switching centre with identical IMSI issuing page message, call out thus and can continue, avoid occurring call loss.
Description of drawings
Fig. 1 realizes 3GPP 23.236 agreements for the prior art gateway proxy and realizes the sketch map of MSC Pool networking paging;
Fig. 2 is embodiment one method flow diagram in the embodiment of the present invention one;
Fig. 3 is embodiment two method flow diagrams in the embodiment of the present invention one;
Fig. 4 is embodiment three method flow charts in the embodiment of the present invention one;
Fig. 5 is embodiment of the present invention two method flow diagrams;
Fig. 6 is embodiment of the present invention three method flow charts;
Fig. 7 is 41 kinds of embodiment sketch mapes of embodiment of the present invention;
Fig. 8 is embodiment of the present invention four another kind of embodiment sketch mapes;
Fig. 9 is embodiment of the present invention four another embodiment sketch mapes;
Figure 10 is embodiment of the present invention five networking sketch mapes;
Figure 11 is embodiment of the present invention six networking sketch mapes.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention is mainly introduced BSC and is connected a plurality of MGW, and with the processing procedure of IMSI calling user, and situation about only linking to each other with a MGW for BSC is identical with the processing of prior art, and present embodiment is not done detailed description.The said scheme of the embodiment of the invention is applicable to the networking that all use IMSI.
Execution mode one
In this execution mode; All write down the correspondence relationship information of the MSC and the IMSI of current distributing paging at a plurality of MGW of BSC connection; No matter follow-up which MGW receives page-response message, can send the MSC that said page-response message is given distributing paging according to said corresponding relation.The concrete implementation procedure of this execution mode is described with various embodiment below.
Embodiment one
MSC creates a private message that carries the corresponding relation of IMSI and MSC before issuing page message, and is broadcast to all MGW that link to each other with said paging purpose BSC, makes the corresponding relation of all preserving said IMSI and MSC on each MGW.As shown in Figure 2, specifically comprise following operating procedure:
Step 20:MSC creates a private message that carries IMSI and MSC corresponding relation before distributing paging, and is broadcast to all MGW that link to each other with said paging purpose BSC;
Mainly comprise in the said private message: the IMSI that carries in the sign of said MSC, the beep-page message that is about to issue.
Said MSC can broadcast said private message to all MGW that link to each other with BSC through signaling link (for example M3UA)/H.248 link.
Step 21: the MGW that receives said private message will write down the corresponding relation of IMSI and MSC;
Step 22:MSC is issued to any MGW (linking to each other with purpose BSC) with beep-page message, through said MGW beep-page message is issued to purpose BSC;
Which, with message goes MGW can decide by the MSC decision through signalling route load sharing algorithm.
Step 23: after any one MGW receives the page-response message that said purpose BSC sends,, send to the MSC of issuing page message to page-response message, guarantee to call out normal foundation according to the IMSI of said record and the corresponding relation of MSC.
Since can carry in the page-response message with beep-page message in identical IMSI; Therefore the MGW that receives page-response message searches the IMSI that write down and the corresponding relation of MSC according to this IMSI, thereby can confirm which MSC is said page-response message sent to.
Embodiment two
MSC broadcasts the page message to all MGW that link to each other with purpose BSC; The MGW that receives this beep-page message resolves and writes down the corresponding relation of said MSC and IMSI; In the beep-page message of broadcasting, carry and whether represent the parameter of issuing page message, and have only a message to carry first parameter of expression issuing page message, only receive carry this first parameter MGW just issuing page message to BSC; As shown in Figure 3, specifically comprise following operating procedure:
Step 30:MSC broadcasts the page message to all MGW that link to each other with purpose BSC;
In the message of being broadcasted, carry and whether represent the parameter of issuing page message for example can in the Optional Field of beep-page message, to increase a non-agreement cell (form of cell is formulated according to concrete agreement) newly, utilize a few positions wherein to carry this parameter.Wherein have only a message to carry the first unique parameter; Other message are carried the second identical parameter; Receive the MGW that carries said first parameter and just can transmit beep-page message to BSC, other MGW that receive the beep-page message that carries second parameter do not transmit said beep-page message.
For example: increase a TAG cell at the Optional Field of message, and with first byte of MSC agreement Tag Value be 1 o'clock, expression MGW with forwards to BSC; Be 0 o'clock, be default value, MGW does not arrive BSC with forwards.
Step 31: the MGW that receives this beep-page message parses the IMSI in the said beep-page message; Obtain corresponding MSC sign according to the signaling link (for example M3UA) of receiving beep-page message then, and obtain and whether represent the parameter of issuing page message, write down the corresponding relation of said MSC and IMSI; And judge whether that according to this parameter the needs issuing page message is to BSC; If need issue, then said beep-page message is issued to BSC, otherwise only need writes down the corresponding relation of this MSC and IMSI;
For example; Said MGW need to judge whether issuing page message method can for: judge this and represent whether whether the value of the parameter of issuing page message is the default value of acquiescence; If; Then do not issue this beep-page message, otherwise represent that this parameter is the first unique parameter, need issue this beep-page message.
Step 32: the follow-up MGW that receives the page-response message of said paging, send to the MSC of issuing page message to page-response message according to the corresponding relation of the MSC of said record and IMSI, guarantee to call out normal foundation.
Embodiment three
MSC is handed down to a MGW with beep-page message, and said MGW parses the corresponding relation of IMSI and MSC, and gives other MGW that link to each other with purpose BSC with its notice, and all MGW that link to each other with purpose BSC so record the corresponding relation of MSC and IMSI.As shown in Figure 4, specifically comprise following operating procedure:
Step 40:MSC is handed down to beep-page message a MGW who links to each other with purpose BSC;
Step 41: said MGW parses the IMSI in the beep-page message, then according to receiving that the signaling link (for example M3UA) of beep-page message obtains the sign of corresponding MSC, the corresponding relation of record IMSI and MSC;
Step 42: said MGW notifies other MGW that link to each other to purpose BSC with said MSC with the corresponding relation of IMSI;
In order to make other MGW that link to each other with purpose BSC that the record of corresponding relation also arranged; Said MGW can be through the transmission of TCP/UDP; Give said other MGW with the forwards of record corresponding relation; Receive and handle by the sync cap between the MGW, make other MGW that link to each other with purpose BSC also write down the corresponding relation of IMSI and MSC.
Step 43: the said MGW that receives beep-page message is issued to purpose BSC with said beep-page message;
Said step 41,42,43 can be carried out synchronously.
Step 44: the follow-up MGW that receives the page-response message of said paging, send to the MSC of issuing page message to page-response message according to the corresponding relation of the MSC of said record and IMSI, guarantee to call out normal foundation.
Above-mentioned three specific embodiments through with all MGW that purpose BSC links to each other on all write down the MSC of distributing paging and the corresponding relation of IMSI; Make follow-up whichever MGW receive the MSC that page-response message can send it to said transmission paging; Guarantee the normal foundation of paging, reduced the generation of call loss.
Execution mode two
MSC arrives purpose BSC through a MGW issuing page message; The follow-up MGW that receives page-response message if do not write down said page-response message corresponding IMSI and MSC corresponding relation, then is broadcast to all MSC among the MSC Pool with said page-response message; And whether this page-response message of expression is set in said page-response message be the sign of MGW broadcasting; Receive the MSC of said page-response message, judge whether the paging of sending, thereby determine whether to accept and handle this page-response message for this MSC according to the IMSI that carries in the said message; As shown in Figure 5, specifically comprise the steps:
Step 50:MSC issues beep-page message through a MGW who links to each other with purpose BSC;
Which, with message goes MGW can decide by the MSC decision through signalling route load sharing algorithm.
Step 51: said MGW parses the IMSI in the beep-page message, then according to receiving that the signaling link (for example M3UA) of beep-page message obtains the sign of corresponding MSC, the corresponding relation of record IMSI and MSC.
Step 52: said MGW gives purpose BSC with paging delivery;
Step 53: after any MGW that links to each other with said purpose BSC receives page-response message; If have setting IMSI and the MSC corresponding relation corresponding among the said MGW, be broadcast to all MSC among the MSC Pool after then said page-response message being provided with a sign with said page-response message;
Said sign is used for representing said page-response message whether by MGW broadcasting, and this sign can be provided with through in the Optional Field of page-response message, increasing a non-agreement cell.
The MSC that receives said page-response message in the step 54:MSC Pool parses IMSI and sign in the said page-response message; Judge whether the paging of sending for this MSC according to said IMSI; If the paging that this MSC is sending; Then accept said page-response message, accomplish follow-up processing flow, the realization paging is normally set up; If not the paging that this MSC is sending, then can know whether be the page-response message of MGW broadcasting, if the page-response message of MGW broadcasting then can abandon said page-response message according to the said sign that parses; If not the page-response message of MGW broadcasting, then according to actual conditions, according to existing this page-response message of disposal methods, the present invention does not here do qualification.
In the present embodiment in order to make the nonvoluntary paging related news that abandon of MSC; Whether expression is set in the page-response message that MGW sends is the sign of MGW broadcasting; MSC is the page-response message of MGW broadcasting identifying only like this, and be not this MSC send the paging related news time just can abandon this page-response message.Certainly be not strict with abandoning message, or under the situation of agreement permission, the said operation that sign is set can be omitted.
This execution mode is not through writing down the MGW of current call IMS I and MSC corresponding relation; The page-response message that receives is broadcast to all MSC in the MSC Pool; Judge whether to accept said page-response message by MSC according to the IMSI in the said message; No matter realized that which MGW receives page-response message and can said page-response message be sent to the MSC that sends paging, realize the normal foundation of calling, avoid the generation of call loss.
Execution mode three
All IMSI and each MGW with each MSC is mapped according to certain rule; Make the MGW can corresponding a plurality of specific I MSI, receive the MGW of page-response message, then confirm the MGW of transmission page-response message according to said rule if do not write down IMSI and the MSC corresponding relation of said paging; Said page-response message is transmitted to said definite MGW; Be handed down to the MSC that sends paging by said definite MGW, as shown in Figure 6, specifically comprise the steps:
Step 60: all IMSI on each MSC are corresponding with each MGW according to certain rule;
For example,, can utilize a few bit digital wherein,, correspond on the same numeral through calculating because IMSI is made up of 15 0～9 numeral.All IMSI on the MSC are divided according to this algorithm, form the projected forms of the corresponding numeral of a plurality of IMSI, this numeral is just represented a MGW, thus all corresponding a plurality of specific I MSI of each MGW of BSC connection;
For example: the user of 10 IMSI is arranged on MSC now, and this MSC has connected two MGW, can utilize the difference of odevity, with the corresponding MGW1 of even number IMSI, the corresponding MGW2 of odd number IMSI; Can also divide according to other algorithms, like HASH (Hash operation) algorithm etc.
And for example: system can adopt reinforcement load HASH function at random to be divided into 1000 " user's pieces " to the user of all accesses equably; " user's piece " distributed to the MGW that links to each other with BSC uniformly; And the corresponding relation of each " user's piece " and MGW all recorded in user's piecemeal table, if three MGW are arranged, " user's piece " 0～333 corresponding MGW1 then; " user's piece " 334～666 corresponding MGW2; " user's piece " 667～999 corresponding MGW3, receive page-response message at every turn after, through the inquiry " user's piecemeal table " just can confirm concrete certain " user's piece " by which MGW handled.
The load HASH function of strengthening at random is: (IMSI/10+IMSI/10000+IMSI mod10) mod 1000.(also can adopt other HASH function).
The page-response message that is up to MGW is carried IMSI information; With the value of IMSI through after strengthening load HASH function calculation at random; The HASH value of gained is inevitable in 0～999 scope; According to HASH value inquiring user piecemeal table, can learn that which MGW the user who carries this IMSI will be handled by.
The beep-page message that step 61:MSC will carry specific I MSI according to said rule sends to corresponding MGW;
Step 62: the said MGW that receives beep-page message resolves the IMSI in the said message; Then according to receiving that the signaling link (for example M3UA) of beep-page message obtains the sign of corresponding MSC; Write down the corresponding relation of IMSI and MSC, and beep-page message is issued to purpose BSC.
Step 63: receive the MGW of the page-response message of said paging, judge whether record the MSC information corresponding on the current MGW,, then said page-response message is sent to corresponding MSC if having with said IMSI; Otherwise, calculate the MGW that IMSI shines upon according to above-mentioned rule, page-response message is transmitted to the said MGW that calculates, receive and handle by the sync cap between the MGW;
For example; The paging IMSI of current transmission is an odd number; Issuing page message and write down IMSI and the MGW1 of the corresponding relation of MSC then, and receive the MGW2 that is of page-response message, this MGW2 is according to same rule; Find that the IMSI in this page-response message is an odd number, then this page-response message is transmitted to MGW1;
Step 64: the said MGW that calculates issues the MSC of issuing page message according to IMSI and the MSC corresponding relation of record on it with page-response message, guarantees to call out normal foundation.
This execution mode is according to certain rule; All IMSI on each MSC are corresponded on each MGW; Make the corresponding a plurality of IMSI of a MGW, thereby when follow-up MGW receives page-response message, can according to this rule page-response message be sent to corresponding MSC according to the IMSI that carries in the message; Realize the normal foundation of calling out, avoided the generation of call loss.
Execution mode four
This execution mode provides a kind of MSC Pool networking achieving paging system; Comprise a plurality of MSC and MGW; Said a plurality of MGW can link to each other with a BSC; Preserving current among said and a plurality of MGW that a BSC links to each other is the MSC of purpose BSC paging and the corresponding relation of IMSI with said BSC, is used for transmitting page-response message according to said corresponding relation.
As shown in Figure 7; Be a kind of MSC Pool networking achieving paging system architecture sketch map; MSC is before sending paging; The IMSI of current paging is broadcast to all MGW that link to each other with the purpose BSC of current paging with the corresponding relation of MSC, makes the corresponding relation of all preserving said IMSI and MSC on each MGW.
For realizing said function, in said MSC (MSC1-MSCn), be provided with:
The paging process unit is used to send beep-page message, the processing that paging receiving response message and completion are relevant with paging;
Radio unit is used for before said paging process unit sends beep-page message, and the IMSI and the corresponding relation of MSC of current paging is broadcast to all MGW that link to each other with purpose BSC.
MGW (MGW1-MGWn) is provided with simultaneously:
Memory cell is used for storing the IMSI and the corresponding relation of MSC that obtain from the message of said MSC broadcasting, and according to said corresponding relation forwarding page-response message.
The groundwork process of this MSC Pool networking achieving paging system is described below:
MSC creates a private message that carries IMSI and MSC corresponding relation before distributing paging, and is broadcast to all MGW that link to each other with said paging purpose BSC by radio unit;
Mainly comprise in the said private message: the IMSI that carries in the sign of said MSC, the beep-page message that is about to issue.
Receive the corresponding relation of the MGW of said private message through unit records IMSI and MSC;
MSC is issued to any MGW (linking to each other with purpose BSC) through the paging process unit with beep-page message, through said MGW beep-page message is issued to purpose BSC; Which, with message goes MGW can decide by the MSC decision through signalling route load sharing algorithm.
After any one MGW receives the page-response message that said purpose BSC sends,, send to the MSC of issuing page message to page-response message, guarantee to call out normal foundation according to the IMSI of said unit records and the corresponding relation of MSC.
As shown in Figure 8, in the another kind of specific embodiment,, in said MSC (MSC1-MSCn), be provided with for realizing said function:
The unit is set, is used for whether representing the parameter of distributing paging the beep-page message setting of sending, have only a beep-page message to carry first parameter of expression distributing paging, other beep-page messages carry not second parameter of distributing paging of identical expression;
The paging delivery unit is used for the beep-page message that carries said parameter is issued to all MGW that link to each other with purpose BSC.
MGW (MGW1-MGWn) is provided with simultaneously:
Information identificating unit is used for according to the beep-page message that receives, and resolves and identifies IMSI, MSC sign and whether represent the parameter of distributing paging;
Judging unit is used for judging whether that according to the said parameter that identifies needs issue said beep-page message;
The paging delivery unit is used to receive the judged result of said judging unit, issuing page message when judgement needs issuing page message.
Also comprise:
Information memory cell is used to receive the information that said information identificating unit identifies, and stores the corresponding relation of said IMSI and said MSC.
The groundwork process of this MSC Pool networking achieving paging system is described below:
MSC broadcasts the page message to all MGW that link to each other with purpose BSC through the paging delivery unit; Before the said beep-page message of broadcasting; In the beep-page message that sends, be provided with and whether represent the parameter of distributing paging by the unit is set; Have only a beep-page message to carry first parameter of expression distributing paging, other beep-page messages carry not second parameter of distributing paging of identical expression;
Receive the MGW of this beep-page message; Parse the IMSI in the said beep-page message through information identificating unit; Obtain corresponding MSC sign according to the signaling link (for example M3UA) of receiving beep-page message then, and obtain and whether represent the parameter of issuing page message, store the corresponding relation of said MSC and IMSI by information memory cell; And judge whether that according to this parameter the needs issuing page message is to BSC by judging unit; If need issue, then notify the paging delivery unit that said beep-page message is issued to BSC, otherwise only need write down the corresponding relation of this MSC and IMSI;
The follow-up MGW that receives the page-response message of said paging sends to the MSC of issuing page message to page-response message according to the corresponding relation of the MSC of said record and IMSI, guarantees to call out normal foundation.
As shown in Figure 9, among another embodiment, for realizing said function, said MGW (MGW1-MGWn) is provided with:
Recognition unit is used for identifying IMSI and MSC corresponding relation according to the beep-page message that receives;
Notification unit is used to obtain said IMSI that identifies and MSC corresponding relation, and notice is given other MGW that link to each other with the purpose BSC of current paging;
Also comprise:
Memory cell is used to store the IMSI and the MSC corresponding relation of said identification.
The groundwork process of this MSC Pool networking achieving paging system is described below:
MSC is handed down to beep-page message a MGW who links to each other with purpose BSC;
Recognition unit among the said MGW parses the IMSI in the beep-page message; Then according to receiving that the signaling link (for example M3UA) of beep-page message obtains the sign of corresponding MSC; Obtain IMSI and MSC corresponding relation; By the corresponding relation of cell stores IMSI and MSC, and give other MGW that link to each other with purpose BSC by notification unit step notice;
In order to make other MGW that link to each other with purpose BSC that the record of corresponding relation also arranged; Said notification unit can be through the transmission of TCP/UDP; Give said other MGW with the forwards of record corresponding relation; Receive and handle by the sync cap between the MGW, make other MGW that link to each other with purpose BSC also write down the corresponding relation of IMSI and MSC.
The operation of said parsing, storage and notice IMSI and MSC corresponding relation can be carried out synchronously.
The said MGW that receives beep-page message is issued to purpose BSC with said beep-page message;
The follow-up MGW that receives the page-response message of said paging sends to the MSC of issuing page message to page-response message according to the corresponding relation of the MSC of said record and IMSI, guarantees to call out normal foundation.
This execution mode through with all MGW that the purpose BSC of current paging links to each other in preserve the corresponding relation of MSC and IMSI, realized the normal foundation of calling, avoided the generation of call loss.
Execution mode five
This execution mode provides a kind of MSC Pool networking achieving paging system; Comprise a plurality of MSC (MSC1-MSCn) and MGW (MGW1-MGWn); Said a plurality of MGW can link to each other with a BSC; Said MGW is used to transmit the paging related news, when receiving page-response message and not writing down with corresponding IMSI of said page-response message and MSC corresponding relation, said page-response message is broadcast to all MSC among the MSC Pool; And can in said page-response message, special identifier be set, represent that this page-response message broadcasted by MGW.Shown in figure 10, for realizing said function, be provided with at least among the said MGW:
The page-response message receiving element is used for the paging receiving response message;
The page-response message radio unit is used for said page-response message is broadcast to all MSC of MSC Pool.
Can also be provided with:
Sign is provided with the unit, and whether be used in the page-response message of sending this page-response message of expression being set is the sign of WMG broadcasting.
Said MSC; Be used for the paging receiving response message; Parse the IMSI in the page-response message, judge whether paging, when judgement is the paging of the current transmission of this MSC into the current transmission of this MSC according to said IMSI; Receive said page-response message, otherwise be to abandon said page-response message under the MGW broadcast situation in said page-response message.For realizing said function, be provided with among the said MSC:
The information analysis unit is used for parsing IMSI information from the page-response message that receives, and judges whether the paging into the current transmission of this MSC according to said IMSI, thereby determines whether to accept and handle said page-response message; Said information analysis unit further comprises: identification (RNC-ID) analytic unit (not shown) is used for parsing the sign of said page-response message; The judging unit (not shown); Be used for judging according to said sign whether this page-response message is the message of MGW broadcasting; Thereby determine whether to abandon said page-response message; When judgement is the message of MGW broadcasting, and during the paging of non-the current transmission of MSC, then abandon said page-response message.
The paging process unit is used to receive the judged result of said information analysis unit, judge receive said page-response message after, receive said page-response message and carry out the relevant processing of follow-up paging.
The groundwork process of this MSC Pool networking achieving paging system is described below:
MSC issues beep-page message through a MGW who links to each other with purpose BSC; Which, with message goes MGW can decide by the MSC decision through signalling route load sharing algorithm.
Said MGW parses the IMSI in the beep-page message, then according to receiving that the signaling link (for example M3UA) of beep-page message obtains the sign of corresponding MSC, the corresponding relation of record IMSI and MSC.
Said MGW gives purpose BSC with paging delivery;
After the page-response message receiving element of any MGW that links to each other with said purpose BSC receives page-response message; If do not have to be provided with IMSI and the MSC corresponding relation corresponding among the said MGW with said page-response message; Then the unit is set said page-response message is provided with a sign, be broadcast to all MSC among the MSC Pool by the page-response message radio unit afterwards by sign;
The sign that said sign is provided with the unit setting is used for representing said page-response message whether by MGW broadcasting, and this sign can be provided with through in the Optional Field of page-response message, increasing a non-agreement cell.
Receive the MSC of said page-response message in the MSC Pool; Go out IMSI and sign in the said page-response message by the information analysis unit resolves; Judge whether the paging of sending according to said IMSI, if said page-response message is then accepted in the paging that this MSC is sending for this MSC; Accomplish follow-up processing flow, the realization paging is normally set up; The paging of sending if not this MSC; Then can know whether be the page-response message of MGW broadcasting according to the said sign that parses by the judging unit in the information analysis unit; If the page-response message of MGW broadcasting then can abandon said page-response message; If not the page-response message of MGW broadcasting, then according to actual conditions, according to existing this page-response message of disposal methods, the present invention does not here do qualification.
When present embodiment can't be confirmed the MSC of current page-response message at MGW; Through page-response message being sent to all MSC among the MSC Pool; Said MSC judges whether the paging into the current transmission of this MSC according to the IMSI of said message, thereby realizes the normal foundation of paging, avoids call loss.
Execution mode six
This execution mode provides a kind of MSC Pool netting communication system, and is shown in figure 11, comprises a plurality of MSC (MSC1-MSCn) and MGW (MGW1-MGWn), and said a plurality of MGW can link to each other with a BSC.
Said MSC is used for selecting corresponding media gateway MGW issuing page message according to the IMSI International Mobile Subscriber Identity IMSI of current transmission paging according to pre-defined rule, and the corresponding relation of said IMSI and MGW is for to preestablish according to rule; For accomplishing said function, be used for it and be provided with at least:
The paging process unit is used to send beep-page message, the processing that paging receiving response message and completion are relevant with paging;
MGW selects to confirm the unit, is used for according to pre-defined rule all IMSI of this MSC are corresponding with each MGW.
Said MGW is used to transmit the paging related news; The corresponding relation of storage IMSI and MSC; And during with MSC corresponding relation record, confirm the MGW of the said page-response message of forwarding according to the rule identical with said MSC at the corresponding IMSI of the page-response message that does not have current reception.For accomplishing said function, it is provided with at least:
Resolve memory cell, be used for parsing IMSI and MSC corresponding relation and storage from the beep-page message that receives;
The MGW selected cell; Be used for after receiving page-response message; And when not having corresponding IMSI and MSC corresponding relation record in the said parsing memory cell; Select to transmit the MGW of said page-response message according to the rule of the selection MGW identical, and the page-response message of said reception is transmitted to the MGW of said selection with MSC.
The groundwork process of this MSC Pool networking achieving paging system is described below:
According to certain rule that all IMSI on each MSC are corresponding with each MGW; The MGW selected cell of MSC selects to transmit the MGW of beep-page message according to said rule, and sends to selected MGW by the beep-page message that the paging process unit will carry specific I MSI;
The said MGW that receives beep-page message resolves the IMSI in the said message through resolving memory cell; Then according to receiving that the signaling link (for example M3UA) of beep-page message obtains the sign of corresponding MSC; Write down the corresponding relation of IMSI and MSC, and beep-page message is issued to purpose BSC.
Receive the MGW of the page-response message of said paging, judge whether record the MSC information corresponding on the current MGW,, then said page-response message is sent to corresponding MSC if having with said IMSI; Otherwise, calculate the MGW of IMSI mapping by the MGW selected cell according to the rule of the above-mentioned selection MGW identical with MSC, page-response message is transmitted to the said MGW that calculates, receive and handle by the sync cap between the MGW;
The said MGW that calculates issues the MSC of issuing page message according to IMSI and the MSC corresponding relation of record on it with page-response message, guarantees to call out normal foundation.
This execution mode is according to certain rule; All IMSI on each MSC are corresponded on each MGW; Make the corresponding a plurality of IMSI of a MGW, thereby when follow-up MGW receives page-response message, can according to this rule page-response message be sent to corresponding MSC according to the IMSI that carries in the message; Realize the normal foundation of calling out, avoided the generation of call loss.
In sum; The embodiment of the invention is MSC Pool networking, when BSC connects a plurality of MGW, with the processing procedure of IMSI calling user; Realized no matter page-response message through which MGW is transmitted; Can send on the MSC with identical IMSI issuing page message, call out thus and can continue, avoid occurring call loss.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (3)

1. achieving paging method in the MSC Pool networking is characterized in that, comprising:
Mobile switching centre selects the first corresponding WMG issuing page message to give base station controller according to the IMSI International Mobile Subscriber Identity IMSI of current transmission paging; Said first WMG writes down the corresponding relation of said mobile switching centre and IMSI; The corresponding relation of IMSI and WMG is for to preestablish according to rule; Said pre-defined rule comprises: will form in the numeral of IMSI some bit digital according to the rules algorithm calculate, various computing result is corresponding to different WMGs;
Second WMG that receives page-response message confirms to transmit first WMG of said page-response message according to said pre-defined rule;
Said second WMG sends to first WMG with said page-response message;
Said first WMG sends to mobile switching centre with said page-response message.
2. achieving paging system in the MSC Pool networking is characterized in that, comprising:
Mobile switching centre; Be used for selecting corresponding WMG issuing page message according to the IMSI International Mobile Subscriber Identity IMSI of current transmission paging; The corresponding relation of IMSI and WMG is for to preestablish according to rule; Said pre-defined rule comprises: will form in the numeral of IMSI some bit digital according to the rules algorithm calculate, various computing result is corresponding to different WMGs;
WMG; Be used to transmit the paging related news; The corresponding relation of storage IMSI and mobile switching centre, and receiving page-response message, and when not having the corresponding IMSI of the page-response message of current reception and mobile switching centre's corresponding relation to write down; According to the definite WMG of transmitting said page-response message of the rule identical, said page-response message is transmitted to said definite WMG with said mobile switching centre.
3. a WMG is characterized in that, comprising:
Resolve memory cell; Be used for parsing IMSI and mobile switching centre's corresponding relation and storage from the beep-page message that receives; The corresponding relation of said IMSI and WMG is for to preestablish according to rule; Said pre-defined rule comprises: will form in the numeral of IMSI some bit digital according to the rules algorithm calculate, various computing result is corresponding to different WMGs;
The WMG selected cell; Be used for after receiving page-response message; And when not having corresponding IMSI and mobile switching centre's corresponding relation record in the said parsing memory cell; Select to transmit the WMG of said page-response message according to the rule of the selection WMG identical, and the page-response message of said reception is transmitted to the WMG of said selection with mobile switching centre.
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