CN1822682A - Method for optimizing call signalling flow of mobile intelligent net - Google Patents
Method for optimizing call signalling flow of mobile intelligent net Download PDFInfo
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- CN1822682A CN1822682A CN 200610066809 CN200610066809A CN1822682A CN 1822682 A CN1822682 A CN 1822682A CN 200610066809 CN200610066809 CN 200610066809 CN 200610066809 A CN200610066809 A CN 200610066809A CN 1822682 A CN1822682 A CN 1822682A
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Abstract
Present invention discloses optimized method to GSM mobile intelligent network calling signalling process. Said method includes when SCP judges accessed calling as intelligent network regular call, then omitting SCP charging operation related signalling interaction, executing simplified signalling process i.e. at once transmitting CONTINUE/CONNECT signalling to MSC/SSP, indicating switchboard making junction processing to said calling, then ending conversation with SCP, no longer to proceed charging signalling interaction. Said signalling optimistic method can delete redundance signalling in regular call signalling process in process of establishing correlation intelligent service interaction channel, thereby reducing SCP, SSP and STP etc correlation net element signalling processing load, raising mobile intelligent network efficiency.
Description
Technical field
The optimization that the present invention relates to a kind of mobile intelligent net signaling process is improved one's methods, and exactly, relates to a kind of method that the call signalling flow of GSM mobile intelligent net is optimized, and belongs to the GSM mobile intelligent net technical field in the mobile communication.
Background technology
The GSM mobile intelligent net is the layer network that stack is set up on the basis of original GSM mobile radio communication, be used for fast, convenient, economical, generate and realize various IN services flexibly, effectively, the international standard of GSM mobile intelligent net is divided into four-stage: CAMEL1, CAMEL2, CAMEL3 and CAMEL4.At present, the mobile intelligent net that belongs to the CAMEL2 standard basically that moves on the Chinese existing network.
Referring to Fig. 1, introduce the network architecture of mobile intelligent net.Mobile intelligent net mainly comprises: equipment of Service Control Point SCP, service management point device SMP, SMAP equipment SMAP and operation exchange point device SSP and ip intelligent peripherals Device IP etc.Wherein the service control point (SCP) is the nucleus equipment of mobile intelligent net, mainly finishes the functions such as business control, calling control and service data acquisition of mobile intelligent net.The major function of service management point SMP is the business and the equipment of management mobile intelligent net.The main application of SMAP SMAP is to provide the man-machine interface that is linked into SMP to the service operation personnel.The service switching point is closed with moving exchanging center MSC usually and is located at, and its major function is to receive and the identification intelligent service call, and to the SCP report, and then accept the control command that SCP sends, calling is handled.The function of ip intelligent peripherals IP is to assist to finish the private resource of IN service, has various phonetic functions (as phonetic synthesis, play verbal announcement, carry out speech recognition etc.), multimedia back ring sound function etc. usually.
VPMN VPMN (Virtual Private Mobile Network) business and personalized ring back tone service are the important IN services of two classes that present Chinese GSM mobile intelligent net provides.
The VPMN network is a logical session private network of setting up on Public Land Mobile Network PLMN and public fixed-line telephone network PSTN.The VPMN business can provide multiple method of callings such as abbreviated dialing, Private Numbering Plan mainly towards group user, to reduce group's telephone expenses and to make things convenient for call manager.The calling of VPMN business support is divided into three types usually: on-net call, net External Number group calls in several and off-net call.The wherein on-net call calling that to be VPMN user send other user who belongs in the same VPMN group.VPMN group can be provided with the net nickname code character that several net External Numbers are formed (comprise and moving and fixed telephone number) this group, calling between each telephone subscriber in VPMN user and the net nickname code character is a net External Number group calls in several, when VPMN user carried out net External Number group calls in several, it was preferential to enjoy telephone expenses.Off-net call is beyond VPMN user and this VPMN group and does not belong to calling between the telephone subscriber of this group's net nickname code character.Current, VPMN is professional only to be opened to postpaid service user (as the Global Link user of China Mobile).Wherein on-net call, net External Number group calls in several are chargeed by SCP, and off-net call then carries out routine by MSC and charges.From existing a large amount of statisticss, the ratio of off-net call generally reaches 80%～90% of the professional total call volume of VPMN in the VPMN business.
Personalized ring back tone service is: after a mobile user contracted becomes the multimedia audible ringing tone user, when this user when called, the ring-back tone that caller is heard is traditional ring back tone no longer just, but the Customized Ring Back Tone of customization.Its implementation is: when the personalized ring back tone service user as called when going back the access failure phone, SCP control MSC/SSP is transferred to caller on the IP, is play the Customized Ring Back Tone of this Customized Ring Back Tone user custom-made to caller by IP.This personalized ring back tone service does not change original user conversation tariff policy, but additionally collects the moon function expense of this business, and paying and prepaid user are open backward simultaneously.But the prepaid user carries out billing operation by SCP, so do not belong to scope of the present invention.When having only the postpaid service user as called conversation of multi-media personal audible ringing tone service, call out to be only and carries out routine by MSC and charge, SCP does not charge, and only realizes the controlled function of calling.
From VPMN professional and above-mentioned two series intelligent services of personalized ring back tone service as can be seen, for some calling that exists in the IN service, SCP and not responsible billing operation, but carry out the routine charging by MSC; Usually, this class calling is referred to as " intelligent network is conventional to be called out ".
In intelligent network call, the mutual employing between SCP and the MSC/SSP is based on the application layer protocol-CAMEL Application Part on " TCAP Transaction Capability Application Part " TCAP, and TCAP is a session-layer protocol, the interactive sessions between the control network element.In the intelligent network call, set up a TCAP session between SCP and the MSC/SSP each time.Comprise TC-END primitive in the TCAP dialogue primitive, TC-END primitive shows that needs finish this TCAP session.
Referring to Fig. 2, introduce the conventional calling signaling flow process (, only studying the Signalling exchange stage between MSC/SSP and the SCP herein) of intelligent network of institute's standard in present agreement or the standard, specifically comprise 7 steps:
1, MSC/SSP receives calling, triggers corresponding IN service according to user's CAMEL-Subscription-Information and service key (for example: the service key for the VPMN business is 3, is 93 for the service key of personalized ring back tone service); Trunk code with the MSC/SSP position, be placed on " start detection point " (IDP) in location number (Location Number) parameter in the message, and to SCP transmission IDP message, comprise in this IDP message and IN service corresponding service key (that is: comprise service key 3 in the IDP message of VPMN business, comprise service key 93 in the IDP message of personalized ring back tone service);
2, after SCP receives IDP message, carry out corresponding service processing, and beam back " request report BCSM incident " RRBE (RequestReportBCSMEvent) message to MSC/SSP;
3, SCP sends " Apply Charging " AC (ApplyCharging) message to MSC/SSP;
4, SCP sends " continuation " Continue or " connection " Connect message to MSC/SSP;
5, behind the end of conversation, after either party on-hook of calling and called, MSC/SSP just reports " Apply Charging Report " ACR (ApllyChargingReport) signaling to SCP;
6, MSC/SSP reports " BCSM event report " ERB (EventReportBCSM) signaling to SCP;
7, SCP sends " call release " RC (ReleaseCall) signaling, call release.
In 7 steps in above-mentioned MSC/SSP and mutual stage of SCP, 7 CAP signalings of CAMEL Application Part have been used altogether, be IDP, RRBE, AC, Continue/Connect, ACR, ERB and RC, this 7 CAP signalings mutual constituted the standard signaling process that meets the CAMEL2 business norms.In these 7 CAP signalings, 4 signalings (RRBE, AC, ACR0, ERB) wherein relate to the charging of intelligent network.But, as previously mentioned, calling out for the routine of intelligent network, SCP does not carry out billing operation, charges but carry out routine by MSC.So in the practical application, these 4 signalings do not have practical value, promptly it is redundant signaling.And the share of the shared total call volume of conventional calling is very big in the intelligent network, so these 4 redundant signalings have not only increased the burden of signaling link, has postponed the foundation of speech channel, has also wasted a large amount of signaling process resource of SCP.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of method that the call signalling flow of GSM mobile intelligent net is optimized, this method can be in the process of setting up the related service interactive channel, delete the unnecessary redundant signaling in the conventional call signalling flow, thereby reduce the signaling process load of related network elements such as SCP, SSP and Signalling Transfer Point STP, improve the operating efficiency of mobile intelligent net.
In order to achieve the above object, the invention provides a kind of method that the call signalling flow of GSM mobile intelligent net is optimized, it is characterized in that: when the service control point (SCP) is judged to be to the calling of its access that intelligent network is conventional to be called out, then omit the Signalling exchange of relevant SCP billing operation, carry out the signaling process of simplifying; Be that SCP receives start detection point IDP message, after judging that this calling is called out for intelligent network is conventional, send to moving exchanging center MSC/service switching point at once and continue or the connection signaling, the indication switch is to this calling processing that continues accordingly, finish the dialogue with SCP then, the signaling of no longer chargeing mutual.
Described intelligent network is conventional call out be that the intelligent network business contracted user sends, carry out the calling that the traditional communication mode is chargeed by moving exchanging center MSC, such calling is not to carry out billing operation by SCP.
SCP shows according to corresponding storehouse in the inquiry of the service key in the IDP message SCP Service Database earlier in the described method, again according to calling number and/or called number, judges whether this calling is that intelligent network is conventional and calls out.
Described method comprises following operating procedure:
(1) MSC/SSP receives calling, triggers corresponding IN service according to user signing contract information and service key; With the trunk code of MSC/SSP position, be placed in the location number LocationNumber parameter in the IDP message, and send IDP message to SCP, comprise in this IDP message and this IN service corresponding service key;
(2) after SCP receives IDP message, judge that this calling calls out for intelligent network is conventional, then structure continues CONTINUE/ and connects the CONNECT signaling, sends to MSC/SSP with TC-END primitive, indication switch continue accordingly processings, the dialogue of end and SCP then.
The conventional calling of described intelligent network includes but not limited to: the off-net call of VPMN VPMN service-user and the postpaid service user's of personalized ring back tone service is called.
Described intelligent network is conventional to be called out when being the off-net call of VPMN VPMN service-user, the SCP structure continues the CONTINUE signaling in the above-mentioned steps (2), send to MSC/SSP with TC-END primitive, the indication switch continues the operation of off-net call, finishes the dialogue with SCP then.
Described intelligent network is conventional to be called out when being postpaid service user's personalized ring back tone service, the SCP structure connects the CONTINUE signaling in the above-mentioned steps (2), send to MSC/SSP with TC-END primitive, the indication switch is called on the ip intelligent peripherals IP device, finishes the dialogue with SCP then.
Advantage of the present invention is: for mobile intelligent service, wherein the conventional ratio of calling out of intelligent network is far above the called telephone of other type, adopt signaling optimization method of the present invention, can set up the Signalling exchange channel of related service fast, the redundant signaling of deleting in the conventional call signalling flow (is reduced to 2 with the conventional mutual signaling of calling out of intelligent network from 7,), reduce the signaling process load (especially the signaling traffic load of SCP can reduce by 40～50%) of related network elements such as SCP, SSP and STP, thereby improve the operating efficiency of mobile intelligent net.
Description of drawings
Fig. 1 is that the network of GSM mobile intelligent net is formed structural representation.
Fig. 2 during to be that the intelligent network of prior art institute standard is conventional call out MSC/SSP and SCP between interactive signaling flow process sequential chart.
Fig. 3 be the inventive method handle the VPMN business conventional calling of intelligent network the time MSC/SSP and SCP between interactive signaling flow process sequential chart.
Fig. 4 is that the inventive method is handled interactive signaling flow process sequential chart between the intelligent network of handling postpaid service user's personalized ring back tone service is conventional when calling out MSC/SSP and SCP.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.，
The present invention is a kind of method that the call signalling flow of GSM mobile intelligent net is optimized, its technical scheme is: when SCP inquires about corresponding storehouse table in the SCP Service Database according to the service key in the IDP message earlier to the calling of its access, again according to calling number and/or called number, judge when this calling is called out for intelligent network is conventional, then omit the Signalling exchange of relevant SCP billing operation, carry out the signaling process of simplifying; Be that SCP receives IDP message, judge that this calling is called out for intelligent network is conventional after, send to MSC/SSP at once and continue or connect signaling, the indication switch is to this calling processings that continue accordingly, finishes the dialogue with SCP then, the signaling of no longer chargeing alternately.
Intelligent network of the present invention is conventional call out be that the intelligent network business contracted user is taken place, carry out the communication call of traditional charging way by moving exchanging center MSC, such calling is not to carry out billing operation by SCP.For example: off-net call that VPMN VPMN service-user takes place and postpaid service user's personalized ring back tone service etc.
Referring to Fig. 3, introduce the concrete operations step of the inventive method when handling the VPMN business:
(1) MSC/SSP receives calling, triggers the VPMN business according to user signing contract information and service key (for example: the service key of VPMN VPMN service-user is 3); With the trunk code of MSC/SSP position, be placed in the Location Number parameter in the IDP message, and send IDP message to SCP, comprise in this IDP message and the corresponding service key of this IN service;
(2) after SCP receives IDP message, judge that this calling calls out for intelligent network is conventional, then construct the CONTINUE signaling, send to MSC/SSP, indication switch continue accordingly processings, the dialogue of end and SCP then with TC-END primitive.
Referring to Fig. 4, introduce the concrete operations step of the inventive method in the processing personalized ring back tone service:
(1) MSC/SSP receives calling, according to the IN service of user signing contract information and service key (for example: the service key of personalized ring back tone service is 93) triggering Customized Ring Back Tone; With the trunk code of MSC/SSP position, be placed in the Location Number parameter in the IDP message, and send IDP message to SCP, comprise in this IDP message and the corresponding service key of this IN service;
(2) after SCP receives IDP message, judge that this calling is that intelligent network is conventional and calls out, then construct the CONNECT signaling, send to MSC/SSP with TC-END primitive, the indication switch is called on the IP, then the dialogue of end and SCP.
The present invention has carried out test and has implemented, and test is successful, has realized goal of the invention.
Claims (7)
1, a kind of method that the call signalling flow of GSM mobile intelligent net is optimized, it is characterized in that: when the service control point (SCP) is judged to be to the calling of its access that intelligent network is conventional to be called out, then omit the Signalling exchange of relevant SCP billing operation, carry out the signaling process of simplifying; Be that SCP receives start detection point IDP message, after judging that this calling is called out for intelligent network is conventional, send to moving exchanging center MSC/service switching point at once and continue or the connection signaling, the indication switch is to this calling processing that continues accordingly, finish the dialogue with SCP then, the signaling of no longer chargeing mutual.
2, the method that is optimized of call signalling flow according to claim 1, it is characterized in that: described intelligent network is conventional call out be that the intelligent network business contracted user is taken place, carry out the calling of traditional communication charging way by moving exchanging center MSC, such calling is not to carry out billing operation by SCP.
3, the method that is optimized of call signalling flow according to claim 1, it is characterized in that: SCP is earlier according to corresponding storehouse table in the inquiry of the service key in the IDP message SCP Service Database in the described method, according to calling number and/or called number, judge whether this calling is that intelligent network is conventional and calls out again.
4, the method that is optimized of call signalling flow according to claim 1, it is characterized in that: described method comprises following operating procedure:
(1) MSC/SSP receives calling, triggers corresponding IN service according to user signing contract information and service key; With the trunk code of MSC/SSP position, be placed in the location number LocationNumber parameter in the IDP message, and send IDP message to SCP, comprise in this IDP message and this IN service corresponding service key;
(2) after SCP receives IDP message, judge that this calling calls out for intelligent network is conventional, then structure continues CONTINUE/ and connects the CONNECT signaling, sends to MSC/SSP with TC-END primitive, indication switch continue accordingly processings, the dialogue of end and SCP then.
5, the method that is optimized of call signalling flow according to claim 1 is characterized in that: the conventional calling of described intelligent network includes but not limited to: the off-net call of VPMN VPMN service-user and personalized ring back tone service postpaid service user's is called.
6, the method that is optimized according to claim 4 or 5 described call signalling flows, it is characterized in that: described intelligent network is conventional to be called out when being the off-net call of VPMN VPMN service-user, the SCP structure continues the CONTINUE signaling in the above-mentioned steps (2), send to MSC/SSP with TC-END primitive, the indication switch continues the operation of off-net call, finishes the dialogue with SCP then.
7, the method that is optimized according to claim 4 or 5 described call signalling flows, it is characterized in that: described intelligent network is conventional when calling out to personalized ring back tone service postpaid service user called, the SCP structure connects the CONNECT signaling in the above-mentioned steps (2), send to MSC/SSP with TC-END primitive, the indication switch is called on the ip intelligent peripherals IP device, finishes the dialogue with SCP then.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008040171A1 (en) * | 2006-09-25 | 2008-04-10 | Huawei Technologies Co., Ltd. | A method, system of circuit switching domain apperceiving multi-media session media information of ims domain |
| CN102421078A (en) * | 2011-11-24 | 2012-04-18 | 杭州东信北邮信息技术有限公司 | Dynamic handover method and system on basis of service broker |
| CN101668230B (en) * | 2008-09-05 | 2012-05-09 | 中兴通讯股份有限公司 | Call charging method and system for intelligent network |
| CN112866489A (en) * | 2021-01-11 | 2021-05-28 | 东方通信股份有限公司 | CAP signaling-based capability opening system |
-
2006
- 2006-03-29 CN CNB200610066809XA patent/CN100471284C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008040171A1 (en) * | 2006-09-25 | 2008-04-10 | Huawei Technologies Co., Ltd. | A method, system of circuit switching domain apperceiving multi-media session media information of ims domain |
| CN101668230B (en) * | 2008-09-05 | 2012-05-09 | 中兴通讯股份有限公司 | Call charging method and system for intelligent network |
| CN102421078A (en) * | 2011-11-24 | 2012-04-18 | 杭州东信北邮信息技术有限公司 | Dynamic handover method and system on basis of service broker |
| CN102421078B (en) * | 2011-11-24 | 2014-01-22 | 杭州东信北邮信息技术有限公司 | Dynamic handover method and system on basis of service broker |
| CN112866489A (en) * | 2021-01-11 | 2021-05-28 | 东方通信股份有限公司 | CAP signaling-based capability opening system |
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| CN100471284C (en) | 2009-03-18 |
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