CN101448253B - Method for implementing mobile number portability by signaling relay function adopted by prepaid subscriber - Google Patents
Method for implementing mobile number portability by signaling relay function adopted by prepaid subscriber Download PDFInfo
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- CN101448253B CN101448253B CN2008100063471A CN200810006347A CN101448253B CN 101448253 B CN101448253 B CN 101448253B CN 2008100063471 A CN2008100063471 A CN 2008100063471A CN 200810006347 A CN200810006347 A CN 200810006347A CN 101448253 B CN101448253 B CN 101448253B
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Abstract
The invention provides a method for implementing mobile number portability by a signaling relay function adopted by a prepaid subscriber. The method comprises the following steps: a GMSC sends an initial detection point (IDP) message to an MNP-SRF/NPDB after the GMSC triggers a prepaid service; the MNP- SRF/NPDB inquires a database to determine a state of a called subscriber; the IDP message which carries called number parameters is sent to an SCP to which a calling subscriber correctly belongs according to the state of the called subscriber; and the SCP performs charging and then sends a message to the GMSC to complete a subsequent call.
Description
Technical field
The present invention relates to the prepaid user adopts signaling relay function (Signalling RelayFunction) mode to carry out the method that mobile number carries (MNP).
Background technology
For the better utilization Internet resources, promote competition rationally.Various countries introduce mobile number carrying service in mobile communication market one after another at present.Mobile number carrying service is exactly in pre-specified scope (the normally a certain zone of a country or a country), and a plurality of mobile networks form carrying bunch of Portability, realizes the Subscriber Number portability between the service provider.Portability between the service provider has been arranged, the user can keep its travelling carriage number MSISDN (Mobile Station international ISDN number) situation that number is constant, can freely select to move into or shift out the network of a certain operator, flow between free each operator in carrying bunch.
Mobile number carrying service is mainly by the definition of 3GPP 22.066 and 3GPP 23.066 protocol specifications among the 3G, and it is identical therewith basically that the number of GSM network carries implementation.According to the description of agreement, the MNP function comprises SRF (signaling relay function) mode and IN mode.The SRF mode adopts the relevant signaling of MAP as the basic means that realizes MNP, and the IN mode adopts the basic means of intelligent network message mode as MNP.
For the SRF mode, protocol description interface relationship, the working method between the relevant devices such as GMSC (mobile gateway switching center) network element, MNP-SRF/NPDB (supporting signaling relay function/number portability database of MNP) equipment, HLR network element.Comprise the operating procedure that should carry out, signaling process etc. problem, solved well that postpaid service user's number carries problem in the mobile communications network.
The handshaking procedure of calling out under the general case is: receive call for ask after, GMSC sends SRI (route requests) message to HLR, inquire about called routing iinformation, HLR inquires about called position to VLR, obtain called roaming number, return called roaming number by SRI_ACK (route requests response) to GMSC again, GMSC routes the call to corresponding VMSC in view of the above and finishes call proceeding.
After number portability service took place, the called subscriber may change net, has been not this network users, and at this moment, HLR just can't inform the roaming number that GMSC is called, and GMSC just can't call out route, thereby the influence calling normally continues.By introducing number portability database NPDB (number portability database), head it off smoothly.In NPDB, deposit all users' home network information, by inquiry NPDB just can know the user current be which network of ownership, should inquire about called subscriber's roaming number to HLR of which network during calling.
Briefly the MNP operation principle of SRF mode is exactly: receive call for ask after, GMSC is not the routing iinformation that directly sends SRI information query called subscriber to HLR, but send SRI message to MNP-SRF/NPDB earlier, inquiry called subscriber's current home network information in NPDB, according to Query Result: if this network users, just route the call to the HLR of user attaching, inquire about called routing iinformation, pass through SRI-ACK message by this HLR, directly return called roaming number and give GMSC, GMSC routes the call to corresponding VMSC in view of the above and finishes call proceeding; If being the called number that taken place, carries Query Result, change the user of net to other networks, just return SRI_ACK message to GMSC, network No. RN and Mobile Subscriber International ISDN Number comprising the called subscriber place, user's network No. RN that GMSC returns according to MNP-SRF/NPDB, route the call to called place network G MSC, finish call proceeding by called place network.The signaling message that the SRF mode relates to mainly comprises:
SRI:Send Routeing Information sends route requests
SRI-ack:Send Routeing Information acknowledge sends the route requests response
IAM:Initial Address Message initial address message
Because the IN mode can't realize the correlation function of the supplementary service of mobile communications network, so what all adopt when introducing number portability service in the general mobile communications network is the SRF mode, wouldn't be described here the IN mode.
The problem that prior art exists is:
For the SRF mode, agreement has only provided interface relationship, the working method between the relevant devices such as GMSC network element, MNP-SRF/NPDB equipment, HLR network element.The working interface of SCP in the MNP business is not described.
For the prepaid user, number portability service (MNP) is preceding carrying out, and sends IDP message after the GMSC trigger intelligent business to SCP, and SCP can judge user attaching information according to Subscriber Number ownership section, thereby can correctly charge, finish normal call flow; But, after carrying out number portability service (MNP), the user number section no longer includes rule and can follow, like this under the calling subscriber SCP how to know the called subscriber current be the user of which network, should how correctly to charge and just become problem, existing protocol is not made clear and definite explanation to this, do not have clear and definite solution.Therefore, cause the prepaid user possibly can't carry out the number portability service problem.
Summary of the invention
Technical problem to be solved by this invention is to be moved behind the number portability service, service control point (service control point, SCP) problem of can't correctly chargeing, by provide cover SCP and a MNP-SRF/NPDB, and mobile gateway switching center (GMSC) between mutual method, overcome problems of the prior art, make the prepaid user also can carry out the MNP business.
In order to solve the problems of the technologies described above, the invention provides under the various scenes of a cover mutual method between SCP and MNP-SRF/NPDB, the GMSC.MNP-SRF/NPDB not only recording user moves into/shifts out the HLR information of the network information, ownership, and writes down the SCP information of prepaid user's ownership.
The method that a kind of prepaid user according to the present invention adopts the signaling relay function to realize that mobile number carries may further comprise the steps:
After GMSC triggered prepayment service, GMSC sent initial Detection Point (IDP) message to MNP-SRF;
MNP-SRF inquires about NPDB, to determine called subscriber's state;
According to called subscriber's state, the IDP message that carries called party number parameter is sent to the SCP of the correct ownership of calling subscriber; And
Request GMSC finished subsequent voice calls after SCP chargeed.
Further, when the state of determining the called subscriber for this network users or when number taking place carrying the user who is transferred to Home Network, called party number parameter is travelling carriage number (MSISDN).
Further, when the state of determining the called subscriber carried and produce the user of its net for number takes place, called party number parameter was routing number (RN)+MSISDN.
Further, when determining that the called subscriber carries and produce the user of its net for number takes place, also comprise: GMSC sends SRI message to inquire about called route according to the called number in the described CONTINUE message to MNP-SRF/NPDB after receiving and continuing to call out CONTINUE message; And MNP-SRF/NPDB inquires about described NPDB and obtains RN, routes the call to the GMSC of the response to network at called subscriber place according to described RN.
Further, when determining that the called subscriber carries and produce the user of its net for number takes place, also comprise: SCP sends the CONNECT message that has RN+MSISDN to GMSC; And after GMSC receives CONNECT message, directly route the call to the GMSC of the response to network at called subscriber place according to RN.
Further, signaling relay function and the number portability database of supporting mobile number to carry is integrated in the module.
In sum, the method according to this invention has following characteristics:
By inquiry NPDB, can know called subscriber's network of correct ownership at present, and corresponding user's network No. information is informed SCP by IDP message, handle thereby make SCP can carry out correct charging.Solved original prepaid user and number takes place carried, the problem that SCP possibly can't correctly charge;
Except requiring SCP can handle the called number of RN+MSISDN form, with to take place number carry the user who is moved out to its net charge handle outside, to the existing function of all network elements in the existing network without any extra requirement, this prepaid user's the mobile number carrying service of upgrading implement to(for) existing network equipment requires very low, help the rapid enforcement of scheme, reduce the correlative investment cost;
For the user who is moved out to its net, the number that the whole call flow after IN service triggering flow process finishes is stipulated according to existing protocol fully carries call flow to carry out, and conveniently understands enforcement;
For the user who is moved out to its net, because SCP is when receiving IDP message, carried out the data query process of a NPDB, known that the called subscriber is that the generation number carries, forward the user of its net to, so, SCP is by CONNECT message, brings GMSC with called subscriber's network No. and called number RN+MSISDN in called party number parameter, and GMSC directly routes the call to the network at called place according to the network No. RN that receives, saved the process of inquiring about called routing iinformation to MNP-SRF/NPDB once more like this, both reduce the signaling message flow quantity in the network, alleviated network load, reduced the time of call proceeding again, improved the speed of call proceeding, point out the network quality of mobile operator, strengthened user satisfaction, and, reduced alternative channel, made the calling routing procedure more reasonable; And
Have good exploitativeness and operability.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is this network users or carry and move into customer call situation figure under the existing protocol regulation SRF mode;
Fig. 2 carries under the existing protocol regulation SRF mode to shift out customer call situation figure;
Fig. 3 is that the caller prepaid user according to the embodiment of the invention calls out Home Network and do not carry the user or carry into Home Network user situation schematic diagram;
Fig. 4 is that the caller prepaid user according to the embodiment of the invention calls out Home Network and do not carry the user or carry into Home Network user message flow chart;
Fig. 5 calls out according to the caller prepaid user of the embodiment of the invention to carry out user-common route sight schematic diagram;
Fig. 6 calls out according to the caller prepaid user of the embodiment of the invention to carry out user-common route messages flow chart;
Fig. 7 calls out according to the caller prepaid user of the embodiment of the invention to carry out user-direct election route sight schematic diagram; And
Fig. 8 calls out according to the caller prepaid user of the embodiment of the invention to carry out user-direct election route messages flow chart.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Fig. 3 is that the caller prepaid user according to the embodiment of the invention calls out Home Network and do not carry the user or carry into Home Network user situation schematic diagram.Fig. 4 is that the caller prepaid user according to the embodiment of the invention calls out Home Network and do not carry the user or carry into Home Network user message flow chart.As shown in Figure 3 and Figure 4, comprising:
(1) Gmsc A receive one go into to call for ask after, triggering intelligent dialing business, send IDP message to MNP-SRF/NPDB, wherein called number is a Mobile Subscriber International ISDN Number, the called part of sccp layer address is scp address (cdpa=scp address), the gt Translation Type is the sri (tt=sri) of agreement regulation, and caller part address is GMSCA address (cgpa=gmscA address);
(2) MNP-SRF/NPDB is according to called subscriber's Mobile Subscriber International ISDN Number inquiry NPDB, the result does not carry the user for Home Network or carries into this network users, then the SCP of MNP-SRF/NPDB under the calling subscriber sends IDP message, wherein called number is a Mobile Subscriber International ISDN Number, the called part of sccp layer address is scp address (cdpa=scp address), and caller part address is GMSCA address (cgpa=gmscA address);
(3) SCP receive IDP charge normally handle after, send RRBE (request SSP dynamic-configuration DP point), Apply Charging (request SSP is a call charging), FCI (charge information is provided), continue (continuing to call out) message to Gmsc A, the called part of sccp layer address cdpa=gmscA address, caller part address cgpa=scpaddress
Should be appreciated that at this, if do not require that SCP sends FCI message and also can not send FCI message during networking; And SCP also can not send out continue, and sends out connect (request SSP connects the user to the object code of appointment) message, and wherein called number is a Mobile Subscriber International ISDN Number; And
(4) Gmsc A proceeds the subsequent voice calls flow process.
Fig. 5 calls out according to the caller prepaid user of the embodiment of the invention to carry out user-common route sight schematic diagram.Fig. 6 calls out according to the caller prepaid user of the embodiment of the invention to carry out user-common route messages flow chart.As shown in Figure 5 and Figure 6, comprising:
(1) Gmsc A receive one go into to call for ask after, triggering intelligent dialing business, send IDP message to MNP-SRF/NPDB, wherein called number is a Mobile Subscriber International ISDN Number, the called part of sccp layer address is scp address (cdpa=scp address), the gt Translation Type is the sri (tt=sri) of agreement regulation, and caller part address is GMSCA address (cgpa=gmscA address);
(2) MNP-SRF/NPDB is according to called subscriber's Mobile Subscriber International ISDN Number inquiry NPDB, the result is for carrying out the user, then the SCP of MNP-SRF/NPDB under the calling subscriber sends IDP message, wherein called number is the RN+MSISDN number, the called part of sccp layer address cdpa=scp address, caller part address cgpa=gmscA address;
(3) SCP receive IDP charge normally handle after, send RRBE (request SSP dynamic-configuration DP point), Apply Charging (request SSP is a call charging), FCI (charge information is provided), continue (continuing to call out) message to GmscA, the called part of sccp layer address cdpa=mscA address, caller part address cgpa=scpaddress
Should be appreciated that at this, if do not require that SCP sends FCI message and also can not send FCI message during networking; And SCP also can not send out continue, and sends out connect (request SSP connects the user to the object code of appointment) message, and wherein called number is a Mobile Subscriber International ISDN Number;
(4) Gmsc A continues to initiate SRI to MNP-SRF/NPDB, inquires about called routing iinformation, and wherein called number is called subscriber's Mobile Subscriber International ISDN Number;
(5) MNP-SRF/NPDB is according to called subscriber's Mobile Subscriber International ISDN Number inquiry NPDB, and the result then returns SRI_ACK to GmscA for carrying out the user, and wherein called subscriber's roaming number is a called subscriber RN+MSISDN number, and RN is the network No. of called place network;
(6) Gmsc A sends iam message according to the RN that receives, routes the call to called place network G MSCB, and wherein called number is a called subscriber RN+MSISDN number.
Fig. 7 calls out according to the caller prepaid user of the embodiment of the invention to carry out user-direct election route sight schematic diagram; And Fig. 8 calls out according to the caller prepaid user of the embodiment of the invention to carry out user-direct election route messages flow chart.As shown in Figure 7 and Figure 8, comprising:
(1) Gmsc A receive one go into to call for ask after, triggering intelligent dialing business, send IDP message to MNP-SRF/NPDB, wherein called number is a Mobile Subscriber International ISDN Number, the called part of sccp layer address cdpa=scp address, GT Translation Type tt=sri, caller part address cgpa=gmscA address;
(2) MNP-SRF is according to called subscriber's Mobile Subscriber International ISDN Number inquiry NPDB, the result is for carrying out the user, then the SCP of MNP-SRF under the user sends IDP message, wherein called number is the RN+MSISDN number, the called part cdpa=scpaddress of sccp layer, caller part cgpa=gmscA address;
(3) SCP receive IDP charge normally handle after, send RRBE (request SSP dynamic-configuration DP point), Apply Charging (request SSP is a call charging), FCI (charge information is provided), connect (connecting the user to the object code of appointment) message to GmscA, wherein the called number of connect message is the RN+MSISDN number, the called part of sccp layer address cdpa=mscA address, caller part address cgpa=scpaddress, should be appreciated that at this, if do not require that SCP sends FCI message and also can not send FCI message during networking; And
(4) Gmsc A is according to after receiving CONNECT message, check wherein called number attribute, if RN+msisdn then directly sends the striking out of iam message, route the call to called place network G MSCB, wherein called number is a called subscriber RN+MSISDN number.No longer send SRI inquiry route to MNP-SRF/NPDB.
The present invention is directed to the prepaid user and carry out mobile number carrying service, after GMSC triggers the intelligent dialing business, make full use of original call flow, and every message wherein, transformation reduced to existing business as far as possible.Rational seamless being inserted in original call flow of process that enquiry number is carried database, by inquire about the network of called current correct ownership to MNP-SRF/NPDB, make the SCP processing of can correctly chargeing, the number portability service that the has solved pre-payment volume user problem of correctly chargeing makes the prepaid user also can normally carry out number portability service.Reduce the change to existing call flow process, signaling message in the scheme as much as possible, reduce the function modifications requirement to existing network element, the routing plan of making rational planning for reduces network load, helps the prepaid user and carries out mobile number carrying service rapidly.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, 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 protection scope of the present invention.
Claims (6)
1. a prepaid user adopts the signaling relay function to realize the method that mobile number carries, and it is characterized in that, comprising:
After mobile gateway switching center triggered prepayment service, described mobile gateway switching center sent initial Detection Point message to the signaling relay function of supporting mobile number to carry;
The signaling relay function enquiry number that described support mobile number carries carries database, to determine called subscriber's state;
According to described called subscriber's state, the initial Detection Point message that carries called party number parameter is sent to the service control point of the correct ownership of calling subscriber; And
The described mobile gateway of request switching center finished subsequent voice calls after described service control point chargeed.
2. method according to claim 1 is characterized in that, when the state of determining described called subscriber for this network users or when number taking place carrying the user who is transferred to Home Network, described called party number parameter is the travelling carriage number.
3. method according to claim 1 is characterized in that, when the state of determining described called subscriber carried and produce the user of its net for number takes place, described called party number parameter was that routing number adds the travelling carriage number.
4. method according to claim 3 is characterized in that, when the state of determining described called subscriber carries and produce the user of its net for number takes place, also comprises:
After described mobile gateway switching center receives and continues to call out CONTINUE message, according to the called number in the described CONTINUE message to supporting the signaling relay function that mobile number carries to send SRI message to inquire about called route;
The signaling relay function that described support mobile number carries is inquired about described number portability database and is obtained routing number, routes the call to the mobile gateway switching center of the response to network at called subscriber place according to described routing number.
5. method according to claim 3 is characterized in that, when the state of determining described called subscriber carries and produce the user of its net for number takes place, also comprises:
Described service control point sends the connection CONNECT message that has routing number+travelling carriage number to described mobile gateway switching center; And
After described CONNECT message is received by described mobile gateway switching center, directly route the call to the mobile gateway switching center of the response to network at described called subscriber place according to described routing number.
6. according to each described method in the claim 1 to 5, it is characterized in that signaling relay function that described support mobile number carries and described number portability database are integrated in the module.
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| CN2008100063471A CN101448253B (en) | 2008-02-26 | 2008-02-26 | Method for implementing mobile number portability by signaling relay function adopted by prepaid subscriber |
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| CN2008100063471A CN101448253B (en) | 2008-02-26 | 2008-02-26 | Method for implementing mobile number portability by signaling relay function adopted by prepaid subscriber |
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| CN101448253B true CN101448253B (en) | 2011-10-26 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1882118A (en) * | 2005-09-23 | 2006-12-20 | 华为技术有限公司 | Method for realizing CAMEL intelligent service in INAP network |
| CN1929629A (en) * | 2006-09-27 | 2007-03-14 | 华为技术有限公司 | Method, system for triggering intelligent business and signal processing device |
| CN101035004A (en) * | 2007-04-12 | 2007-09-12 | 华为技术有限公司 | Charging method based on the number-carrying service and its related device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1882118A (en) * | 2005-09-23 | 2006-12-20 | 华为技术有限公司 | Method for realizing CAMEL intelligent service in INAP network |
| CN1929629A (en) * | 2006-09-27 | 2007-03-14 | 华为技术有限公司 | Method, system for triggering intelligent business and signal processing device |
| CN101035004A (en) * | 2007-04-12 | 2007-09-12 | 华为技术有限公司 | Charging method based on the number-carrying service and its related device |
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