CN1606381A - Method for implementing call forwarding on no answer when GSM1X user roaming to CDMA network - Google Patents
Method for implementing call forwarding on no answer when GSM1X user roaming to CDMA network Download PDFInfo
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- CN1606381A CN1606381A CN 200410091597 CN200410091597A CN1606381A CN 1606381 A CN1606381 A CN 1606381A CN 200410091597 CN200410091597 CN 200410091597 CN 200410091597 A CN200410091597 A CN 200410091597A CN 1606381 A CN1606381 A CN 1606381A
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Abstract
This invention discloses a method for a GSMIX user roaming to CDMA network to realize non-reply call forward including the following steps: G&C gateway designs the CDMA MSC/VLR number not supporting forward of the local office in its matched data base, when a GSMIX user roams to the CDMA network from an attribution network and is called, the G& C gate is taken as its HLR to send a CDMA route request information to the user currently accessed CDMA MSC/VLR, G &C gate judges if it supports the local office forward, if not, it fills in the MSCID, MSCIN parameter of CDMA MSC VLR in said route request accessed by the called user, if said user is no response, then the CDMA MSC/VLR starts a new call according to the forward number set by the user the G& C gate sent to.
Description
Technical field
The invention belongs to the method that realizes user's no-answer call connection in a kind of field of mobile communication, particularly a kind of method that realizes its no-answer call connection at the GSM1X user who roams to cdma network.
Background technology
Standard according to 3GPP2 (the standardized partnership projects 2 of Third Generation Partnership Project 2 3G (Third Generation) Moblies), in order to realize the mutual roaming of GSM network and cdma network, the equipment that can be referred to as IIF (Interworkingand Interoperation Function, interconnected interoperability function) be need between cdma network and GSM network, increase and two network signals, parameter and professional conversion are responsible for.In the technical specification of CHINAUNICOM, this equipment also is called G﹠amp; The C gateway (is GSM﹠amp; The CDMA gateway).In the prior art, G﹠amp; The relevant enterprise standard that the content of C gateway can be formulated with reference to N.S0028 agreement and the CHINAUNICOM of 3GPP2.
As user during at across-network roaming, G﹠amp; The C gateway can serve as the HLR (HomeLocation Register, attaching position register) of its roaming network.Because MAP (Mobile Application Part between GSM and two networks of CDMA, MAP) difference of agreement, for the GSM network, transfer on no reply when the user is called (CFNRy) or unreachable transfer Call Forwarding services such as (CFNRc) are generally finished by landing office MSC (mobile switching centre), and landing office MSC is called party's service MSC; And for cdma network, the Call Forwarding services during the called no response of user (CFNA) generally are to be finished by the MSC of Originating Office (calling subscriber's service MSC).
Following problem can appear like this, promptly when a GSM1X mobile subscriber from the GSM netsurfing of ownership during to cdma network, if the CDMA MSC of current service does not support to change before the landing office, this user then can't finish the no-answer call connection business so.
Summary of the invention
The technical issues that need to address of the present invention provide the method that a kind of GSM1X user who roams to cdma network realizes no-answer call connection, the Call Forwarding services when this method can realize that GSM 1X user carries out no response after home network roams to cdma network.
In order to solve the problems of the technologies described above, the invention provides the method that a kind of GSM1X user who roams to cdma network realizes no-answer call connection, comprise the steps:
(a) GSM﹠amp; The CDMA mobile switch system number that the CDMA gateway changes before being provided with in its configuration database and not supporting landing office;
(b) when GSM 1X user is called out after home network roams to cdma network, by GSM﹠amp; The CDMA gateway roams to the attaching position register of cdma network as this GSM 1X user, judges whether the CDMA mobile switch system of the current visit of user is supported to change before the landing office, if do not support, and GSM﹠amp then; The CDMA gateway extends this as the mobile switching centre sign of starting, mobile switching centre's identification number parameter in the CDMA route request information mobile switching centre's sign, mobile switching centre's identification number parameter of the CDMA mobile switching centre that described called party visits;
(c) GSM﹠amp; The CDMA gateway sends the CDMA route request information to the CDM of the current visit of user mobile switch system, and this CDMA route request information includes start mobile switching centre's sign, mobile switching centre's identification number parameter;
(d) as if described called party's no response, then described CDMA mobile switch system is to described GSM﹠amp; The transferred number that this user of CDMA gateway requests is provided with;
(e) described GSM﹠amp; The CDMA gateway sends described transferred number to described CDMA mobile switch system, and this CDMA mobile switch system is initiated new calling according to described transferred number.
Further, said method can have following characteristics, and described step (b) can be further divided into following steps:
(b1) when the GSM customer call when home network roams to the GSM 1X user of cdma network, the GSM mobile switch system that starts that the calling subscriber visited sends the GSM route request information to the GSM attaching position register that this GSM 1X user is belonged to, request GSM 1X user position information;
(b2) the GSM attaching position register is to GSM﹠amp; The CDMA gateway sends the message that Provides Roaming Number, and GSM 1X user's roaming number is called out in request, wherein, and described GSM﹠amp; The CDMA gateway is roamed the attaching position register of cdma network as this GSM 1X user;
(b3) GSM﹠amp; The CDMA gateway judges whether the CDMA mobile switch system of the current visit of user is supported to change before the landing office, if do not support, and GSM﹠amp then; The CDMA gateway extends this as the mobile switching centre sign of starting, mobile switching centre's identification number parameter in the CDMA route request information mobile switching centre's sign, mobile switching centre's identification number parameter of the CDMA mobile switching centre that described called party visits.
Further, said method can have following characteristics, and described step (b) also can be further divided into following steps:
(b1) when the GSM customer call when home network roams to the GSM 1X user of cdma network, the GSM mobile switch system that starts that the calling subscriber visited sends the GSM route request information to the GSM attaching position register that this GSM 1X user is belonged to, request GSM 1X user position information;
(b2) the GSM attaching position register is to GSM﹠amp; The CDMA gateway sends the message that Provides Roaming Number, and GSM 1X user's roaming number is called out in request, wherein, and described GSM﹠amp; The CDMA gateway is roamed the attaching position register of cdma network as this GSM 1X user;
(b3) GSM﹠amp; The CDMA gateway judges whether the CDMA mobile switch system of the current visit of user is supported to change before the landing office, if do not support, and GSM﹠amp then; The CDMA gateway extends this as the mobile switching centre sign of starting, mobile switching centre's identification number parameter in the CDMA route request information mobile switching centre's sign, mobile switching centre's identification number parameter of the CDMA mobile switching centre that described called party visits.
Further, said method can have following characteristics: described CDMA route request information also includes the system type sign indicating number of charging identifier, equipment Electronic Serial Number and the mobile switching centre that starts.
Further, said method can have following characteristics, and this method also includes following steps:
(c1) the CDMA mobile switch system is to GSM﹠amp; The CDMA gateway returns the interim local number;
(c2) GSM﹠amp; The CDMA gateway returns roaming number to the GSM attaching position register;
(c3) the GSM attaching position register returns response message to start GSM mobile switch system or GMS GMSC (gateway mobile switching center), and this response message includes the roaming number that receives in the step (c2).
Further, said method can have following characteristics, this method also includes following steps: the described GSM of starting mobile switch system is set up the speech path between calling subscriber and the called GSM 1X user according to the roaming number in the response message that is received in the step (c3); Or the GSM GMSC (gateway mobile switching center) is returned described roaming number to the CDMA mobile switch system that the calling subscriber visited, and this CDMA mobile switch system is set up speech path between calling subscriber and the called GSM1X user according to roaming number.
Further, said method can have following characteristics: judge in the described step (d) called party whether unresponsive method can be in the CDMA mobile switch system of visiting setting and reply timer the called party, when the timing of replying timer surpassed preset value, described CDMA mobile switch system was judged called party's no response; This preset value scope of replying timer can be 30～60 seconds.
Compared with prior art, the present invention GSM1X user of roaming to cdma network realizes that the method for no-answer call connection has the following advantages:
The present invention is directed to and do not support the preceding CDMA mobile switch system of changeing of landing office, at GSM﹠amp; When the CDMA gateway is initiated the CDMA route request information, the mobile switching centre's sign that starts, mobile switching centre's identification number parameter are filled in into mobile switching centre's sign, mobile switching centre's identification number parameter of this serving mobile switching center, when this user is called out no response, CDMA mobile switching centre finds to start, and mobile switching centre identifies, mobile switching centre's identification number parameter is identical with self, can think office call, can (be GSM﹠amp to attaching position register then here; The CDMA gateway) request Call Forwarding No Reply number is initiated new calling, thereby realization GSM 1X user roams to the Call Forwarding services of cdma network when carrying out no response from home network.
Description of drawings
Fig. 1 is the no-answer call connection schematic flow sheet of CDMA contracted user at Home Network;
Fig. 2 is that GSM 1X contracted user of the present invention roams to cdma network no-answer call connection schematic flow sheet.
Embodiment
Realize the method for no-answer call connection for understanding GSM1X user that the present invention roams to cdma network in depth, the present invention is described in detail below in conjunction with drawings and the specific embodiments.
According to the IS-41 agreement, the CDMA contracted user comprises the steps: in the no-answer call connection flow process of Home Network as shown in Figure 1
Step 11, when a certain user dials the user who roams to cdma network, with the calling subscriber is that the cdma network user is an example, the CDMA mobile switch system that the calling subscriber visited (is CDMAMSC/VLR, mobile switching center) sends location request message (LOCAREQ) to the CDMAHLR/AUC (attaching position register/AUC) that the called subscriber belonged to, request called subscriber's positional information;
Step 12, CDMA HLR sends CDMA route request information (ROUTREQ) to the CDMA MSC/VLR that the called party visited, request called subscriber's interim local number (TLDN), wherein, include the sign (MSCID of mobile switching centre that starts among this ROUTREQ, MSCidentification) and the mobile switching centre's identification number parameter that starts (MSCIN, MSCidentification Number parameter);
Step 13, the called subscriber visits CDMA MSC/VLR and returns interim local number (TLDN) to CDMA HLR/AUC;
Step 14, CDMA HLR/AUC visits CDMA MSC/VLR to the calling subscriber and returns customer position information;
Step 15, the called party's that originating MS C/VLR (calling subscriber visit CDMA MSC/VLR) returns according to CDMA HLR/AUC positional information makes a call and continues;
Step 16, if CDMA MSC/VLR paging or wait acknowledge timer expiry that the called party visited, then this CDMA MSC/VLR initiates to alter course to call for to ask to originating MS C/VLR again;
Step 17, originating MS C/VLR receive described changed course call for again ask after, initiate to ask for number forwarding request to CDMA HLR/AUC that the called party belonged to;
Step 18, if this user has activated Call Forwarding No Reply, then CDMA HLR/AUC returns the number of Call Forwarding No Reply;
Step 19, originating MS C/VLR exhales response again to the CDMA MSC/VLR loopback changed course of called subscriber's visit;
Step 111, originating MS C/VLR initiates new calling according to the transferred number of request.
As shown in Figure 2, GSM 1X contracted user of the present invention roams to cdma network no-answer call connection flow process and comprises the steps, wherein the prerequisite step is called GSM 1X user's Call Forwarding No Reply service authorization and activation, and G﹠amp; The C gateway (is GSM﹠amp; The CDMA gateway) CDMA mobile switch system (the being CDMAMSC/VLR) number that changes before setting is not supported landing office in its configuration database:
Step 21, when a certain user dials the GSM 1X user who roams to cdma network,
If the calling subscriber is the GSM network user, the GSM mobile switch system that then calling subscriber visited (being GSM MSC/VLR) sends GSM route request information (MAP_SEND_ROUT_INFO) to the GSM HLR/AUC that GSM 1X user is belonged to, and GSM 1X user position information is called out in request;
If the calling subscriber is the cdma network user, the CDMA MSC/VLR that the calling subscriber visited, send GSM route request information (MAP_SEND_ROUT_INFO) by GSM gateway MSC (GMSC_G) to the GSM HLR/AUC that GSM 1X user is belonged to, GSM 1X user position information is called out in request;
Step 22, GSM HLR/AUC finds that this GSM 1X user is at this moment at G﹠amp; Register in the C gateway, then to G﹠amp; The C gateway sends the message (PROVIDE_ROAMING_NUNBER) that Provides Roaming Number, request called subscriber's roaming number;
Step 23, G﹠amp; Stored the real positional information of this GSM 1X user in the GSM network in the C gateway, if G﹠amp; The C gateway discovery is called out the CDMA MSC/VLR that GSM 1X user visited and is not supported to change before the landing office, and promptly this CDMA MSC/VLR number has record in described configuration database, then G﹠amp; The C gateway extends this as start mobile switching centre sign (MSCID) and mobile switching centre identification number parameter (MSCIN) that starts in the CDMA route request information MSCID of the CDMA MSC/VLR that described called party visits, the MSCIN value, and send CDMA route request information (ROUTREQ) to CDMA MSC/VLR that this user registered, GSM 1X user's routing iinformation is called out in request, wherein, this CDMA route request information includes originating MS CID, originating MS CIN, charging ID (charging identifier), the system type sign indicating number of ESN (equipment Electronic Serial Number) and originating MS C;
Step 24, the described G﹠amp that is called out CDMA MSC/VLR that GSM 1X user visited to the request of sending; The C gateway returns interim local number (TLDN);
Step 25, described G﹠amp; The C gateway returns roaming number (MSRN), this roaming number and G﹠amp to the described GSM HLR/AUC of the request of sending; The received interim local number of C gateway is consistent, and the interim local number is the title that cdma network uses, the title that roaming number uses for the GSM network;
Step 26, described GSM HLR/AUC returns response message to start GSM MSC/VLR or GMSC_G, wherein comprises the MSRN of receiving from step 25;
Step 27, start GSM MSC/VLR according to MSRN, set up the speech path between calling subscriber and the called GSM 1X user, perhaps GSM gateway MSC returns described roaming number to the CDMA MSC/VLR that the calling subscriber visited, and this CDMA MSC/VLR sets up speech path between calling subscriber and the called GSM 1X user according to roaming number;
Step 28, when called party's no-response paging, what promptly be provided with in the CDMAMSC/VLR that the called party visited replys the timer timing when surpassing preset value, this CDMA MSC/VLR is by judging the MSCID in the CDMA route request information, the MSCIN parameter, can think that originating MS C is exactly oneself, thereby directly to G﹠amp; C gateway requests transferred number, the preset value scope of wherein replying timer can be 30～60 seconds;
Step 29, G﹠amp; The C gateway returns the response of request transferred number, comprises in this response being called out the transferred number that GSM1X user is provided with;
Step 211, described CDMA MSC/VLR initiates new calling according to the transferred number that receives.
This paper roams into the Call Forwarding No Reply that cdma network does when called to the disclosed GSM of relating to 1X mobile subscriber from home network and has carried out special description, those skilled in the art can understand, under the situation that does not depart from scope and spirit of the present invention, can carry out all conspicuous modification of form and details to it.Therefore, embodiment described above is illustrative and not restrictive, and under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.
Claims (9)
1, a kind of GSM1X user who roams to cdma network realizes the method for no-answer call connection, it is characterized in that, comprises the steps:
(a) GSM﹠amp; The CDMA mobile switch system number that the CDMA gateway changes before being provided with in its configuration database and not supporting landing office;
(b) when GSM 1X user is called out after home network roams to cdma network, by GSM﹠amp; The CDMA gateway roams to the attaching position register of cdma network as this GSM 1X user, judges whether the CDMA mobile switch system of the current visit of user is supported to change before the landing office, if do not support, and GSM﹠amp then; The CDMA gateway extends this as the mobile switching centre sign of starting, mobile switching centre's identification number parameter in the CDMA route request information mobile switching centre's sign, mobile switching centre's identification number parameter of the CDMA mobile switching centre that described called party visits;
(c) GSM﹠amp; The CDMA gateway sends the CDMA route request information to the CDM of the current visit of user mobile switch system, and this CDMA route request information includes start mobile switching centre's sign, mobile switching centre's identification number parameter;
(d) as if described called party's no response, then described CDMA mobile switch system is to described GSM﹠amp; The transferred number that this user of CDMA gateway requests is provided with;
(e) described GSM﹠amp; The CDMA gateway sends described transferred number to described CDMA mobile switch system, and this CDMA mobile switch system is initiated new calling according to described transferred number.
2, the GSM1X user who roams to cdma network according to claim 1 realizes the method for no-answer call connection, it is characterized in that, described step (b) can be further divided into following steps:
(b1) when the GSM customer call when home network roams to the GSM 1X user of cdma network, the GSM mobile switch system that starts that the calling subscriber visited sends the GSM route request information to the GSM attaching position register that this GSM 1X user is belonged to, request GSM 1X user position information;
(b2) the GSM attaching position register is to GSM﹠amp; The CDMA gateway sends the message that Provides Roaming Number, and GSM 1X user's roaming number is called out in request, wherein, and described GSM﹠amp; The CDMA gateway is roamed the attaching position register of cdma network as this GSM 1X user;
(b3) GSM﹠amp; The CDMA gateway judges whether the CDMA mobile switch system of the current visit of user is supported to change before the landing office, if do not support, and GSM﹠amp then; The CDMA gateway extends this as the mobile switching centre sign of starting, mobile switching centre's identification number parameter in the CDMA route request information mobile switching centre's sign, mobile switching centre's identification number parameter of the CDMA mobile switching centre that described called party visits.
3, the GSM1X user who roams to cdma network according to claim 1 realizes the method for no-answer call connection, it is characterized in that, described step (b) can be further divided into following steps:
(b1) when the CDMA customer call when home network roams to the GSM 1X user of cdma network, the CDMA mobile switch system that the calling subscriber visited sends the GSM route request information by the GSM GMSC (gateway mobile switching center) to the GSM attaching position register that this GSM 1X user is belonged to, request GSM 1X user position information;
(b2) the GSM attaching position register is to GSM﹠amp; The CDMA gateway sends the message that Provides Roaming Number, and GSM 1X user's roaming number is called out in request, wherein, and described GSM﹠amp; The CDMA gateway is roamed the attaching position register of cdma network as this GSM 1X user;
(b3) GSM﹠amp; The CDMA gateway judges whether the CDMA mobile switch system of the current visit of user is supported to change before the landing office, if do not support, and GSM﹠amp then; The CDMA gateway extends this as the mobile switching centre sign of starting, mobile switching centre's identification number parameter in the CDMA route request information mobile switching centre's sign, mobile switching centre's identification number parameter of the CDMA mobile switching centre that described called party visits.
4, realize the method for no-answer call connection according to claim 2 or the 3 described GSM1X users that roam to cdma network, it is characterized in that: described CDMA route request information also includes the system type sign indicating number of charging identifier, equipment Electronic Serial Number and the mobile switching centre that starts.
5, the GSM1X user who roams to cdma network according to claim 4 realizes the method for no-answer call connection, it is characterized in that, this method also includes following steps:
(c1) the CDMA mobile switch system is to GSM﹠amp; The CDMA gateway returns the interim local number;
(c2) GSM﹠amp; The CDMA gateway returns roaming number to the GSM attaching position register;
(c3) the GSM attaching position register returns response message to start GSM mobile switch system or GMS GMSC (gateway mobile switching center), and this response message includes the roaming number that receives in the step (c2).
6, the GSM1X user who roams to cdma network according to claim 5 realizes the method for no-answer call connection, it is characterized in that, this method also includes following steps:
The described GSM of starting mobile switch system is set up the speech path between calling subscriber and the called GSM 1X user according to the roaming number in the response message that is received in the step (c3).
7, the GSM1X user who roams to cdma network according to claim 5 realizes the method for no-answer call connection, it is characterized in that, this method also includes following steps:
The GSM GMSC (gateway mobile switching center) is returned described roaming number to the CDMA mobile switch system that the calling subscriber visited, and this CDMA mobile switch system is set up speech path between calling subscriber and the called GSM 1X user according to roaming number.
8, the GSM1X user who roams to cdma network according to claim 5 realizes the method for no-answer call connection, it is characterized in that: judge in the described step (d) called party whether unresponsive method can be in the CDMA mobile switch system of visiting setting and reply timer the called party, when the timing of replying timer surpassed preset value, described CDMA mobile switch system was judged called party's no response.
9, the GSM1X user who roams to cdma network according to claim 8 realizes the method for no-answer call connection, it is characterized in that: described preset value scope of replying timer can be 30～60 seconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100915971A CN100352313C (en) | 2004-11-19 | 2004-11-19 | Method for implementing call forwarding on no answer when GSM1X user roaming to CDMA network |
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| CNB2004100915971A CN100352313C (en) | 2004-11-19 | 2004-11-19 | Method for implementing call forwarding on no answer when GSM1X user roaming to CDMA network |
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| CN1606381A true CN1606381A (en) | 2005-04-13 |
| CN100352313C CN100352313C (en) | 2007-11-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007134507A1 (en) * | 2006-05-19 | 2007-11-29 | Huawei Technologies Co., Ltd. | A method, network and device to process late forwarding service |
| CN105592507A (en) * | 2014-10-23 | 2016-05-18 | 中兴通讯股份有限公司 | Method, device and system for voice fallback |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5978673A (en) * | 1996-12-13 | 1999-11-02 | Ericsson Inc. | Providing location-based call forwarding within a mobile telecommunications network |
| US6138007A (en) * | 1997-11-26 | 2000-10-24 | Nortel Networks Corporation | Methods and systems for late call forwarding when roaming from GSM system to IS41 system |
| US6615037B1 (en) * | 1999-06-18 | 2003-09-02 | Nortel Networks Limited | Method apparatus and system for call forwarding when roaming from a first type network to a second type network in a communication system |
| KR20010108926A (en) * | 2000-06-01 | 2001-12-08 | 윤종용 | Homezone termination trigger service method |
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2004
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007134507A1 (en) * | 2006-05-19 | 2007-11-29 | Huawei Technologies Co., Ltd. | A method, network and device to process late forwarding service |
| CN101076186B (en) * | 2006-05-19 | 2011-04-13 | 华为技术有限公司 | Method, network and apparatus for processing afterservice |
| CN105592507A (en) * | 2014-10-23 | 2016-05-18 | 中兴通讯股份有限公司 | Method, device and system for voice fallback |
| CN105592507B (en) * | 2014-10-23 | 2020-03-31 | 中兴通讯股份有限公司 | Method, device and system for voice fallback |
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| CN100352313C (en) | 2007-11-28 |
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