CN100433849C - Method of continuing main call mobile switching center to called mobile terminal - Google Patents
Method of continuing main call mobile switching center to called mobile terminal Download PDFInfo
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- CN100433849C CN100433849C CNB2005100538706A CN200510053870A CN100433849C CN 100433849 C CN100433849 C CN 100433849C CN B2005100538706 A CNB2005100538706 A CN B2005100538706A CN 200510053870 A CN200510053870 A CN 200510053870A CN 100433849 C CN100433849 C CN 100433849C
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- mobile terminal
- called mobile
- caller msc
- vlr
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
Abstract
The present invention discloses a method for a main call mobile switching center (MSC) to transfer a call to a called mobile terminal. The method adopts the mode that a calling MSC obtains the route information of the called mobile terminal from a visitor location register VLR of the calling MSC and transfers the call to the called mobile terminal according to the obtained route information, and thus, when the call of the calling MSC can not be transferred to the home location register (HLR) of the called mobile terminal, and a calling mobile terminal and the called mobile terminal belong to the same MSC, the call of the calling mobile terminal is transferred to the called mobile terminal. Therefore, the present invention solve the problem that in the existing method of call connection, the call of the calling MSC can not be transferred to the HLR of the called mobile terminal, and in other words, the calling and the called mobile terminals which belong to the same MSC all make call connection failures. In addition, the success ratio of call completion is raised.
Description
Technical field
The present invention relates to mobile communication technology, be meant the continue method of called mobile terminal of a kind of calling mobile exchanging center (MSC) especially.
Background technology
Existing mobile communications system all adopts No. seven (NO.7) signaling protocols as its basic communication agreement as global system for mobile communications (GSM) and code division multiple access (CDMA) system etc.According to this agreement, the communication system that can realize call proceeding between calling mobile terminal and the called mobile terminal as shown in Figure 1, this system comprises core net part and Access Network part at least, wherein the core net part mainly comprises MSC, attaching position register (HLR), VLR Visitor Location Register (VLR) etc., and the Access Network part then comprises the base station sub-system (BSS) that is connected with the calling and called portable terminal.Existing call proceeding flow process based on above-mentioned mobile communication system as shown in Figure 2, mainly comprises the steps:
Step 201: calling mobile terminal sends call business request (CM_SERVICE_REQ) by BSS to caller MSC.
Step 202: after caller MSC receives this CM_SERVICE_REQ, send position requests (LOC_REQ) to the HLR that called mobile terminal belonged to.
After step 203:HLR receives this LOC_REQ, judge the current caller MSC that whether belongs to of called mobile terminal, promptly whether called MS C and caller MSC are same MSC, if then execution in step 204; Otherwise, execution in step 209.
Step 204: return to caller MSC and to carry the response that the calling and called portable terminal belongs to same MSC sign.
Step 205: after caller MSC receives this response, send route requests to the VLR of this MSC.
Step 206: after local exchange VLR receives this route requests,, judge the current idle condition that whether is in of called mobile terminal, if then execution in step 207 according to the number of the called mobile terminal that is comprised in the request; Otherwise, execution in step 208.
Step 207: be a called mobile terminal distribution Temporary Local Directory Number (TLDN, Temporary Local Directory Number), and return the route data response (ROUTDATA_RSP) of carrying this TLDN to caller MSC; Caller MSC carries out normal call proceeding, process ends according to this TLDN paging called mobile terminal.
Step 208: return called mobile terminal call proceeding failure response, process ends.
Step 209: routing striking out again.
From above-mentioned steps as can be seen, on the one hand based on the regulation of agreement: caller MSC could carry out further call proceeding with called mobile terminal after must getting access to the positional information of the MSC that called mobile terminal belongs to from the HLR of called mobile terminal ownership.Two network entities normally separating of the HLR of caller MSC and called mobile terminal ownership on the other hand, the physical link between the HLR of caller MSC and called mobile terminal ownership is understood unavoidably owing to fault is interrupted.Therefore, in case the link interruption between the said two devices, caller MSC just can't get access to the positional information of the MSC that this called mobile terminal belongs to from the HLR of called mobile terminal ownership, also just can't carry out further call proceeding.And in actual conditions, exist the master, called mobile terminal belongs to the situation of same MSC, for this situation, caller MSC need not to obtain routing iinformation from the HLR of called mobile terminal ownership, and adopt above-mentioned existing scheme, in case the physical link between the HLR of caller MSC and called mobile terminal ownership interrupts, then no matter lead, whether called mobile terminal belongs to same MSC, caller MSC can remove this calling, finish this calling, finally cause this calling to end in failure, when causing the user to utilize above-mentioned call connection method to call out, the success rate of connection is lower.
Summary of the invention
In view of this, the object of the present invention is to provide the continue method of called mobile terminal of a kind of caller MSC, solve the low problem of the existing call through success rate of existing call connecting method.
In order to achieve the above object, the invention provides the continue method of called mobile terminal of a kind of calling mobile exchanging center, this method specifically comprises step:
When caller MSC judges when can't connect the HLR that called mobile terminal belongs to, caller MSC directly obtains the routing iinformation of called mobile terminal from self VLR Visitor Location Register VLR, and according to the routing iinformation call proceeding called mobile terminal that obtains.
In said method, caller MSC judges when the request failure and can't connect the HLR that called mobile terminal belongs to by to the position requests of the attaching position register HLR of called mobile terminal transmission at called mobile terminal.
In said method, described caller MSC judges that the step that can't connect the HLR that called mobile terminal belongs to comprises: caller MSC receives the error message that message transfer part MTP reports.
In said method, described caller MSC judges that the step that can't connect the HLR that called mobile terminal belongs to comprises: caller MSC receives the error message that SCCP SCCP reports.
In said method, described caller MSC judges that the step that can't connect the HLR that called mobile terminal belongs to comprises:
Caller MSC receives error message or the caller MSC that TCAP Transaction Capability Application Part TCAP reports and do not receive the position response that HLR returns in the timing length of setting.
In said method, described caller MSC further comprised obtain the routing iinformation of called mobile terminal from self VLR before: caller MSC preserves the attribute information that continues of called mobile terminal in advance;
When caller MSC judges that when can't connect the HLR that called mobile terminal belongs to, the present invention further comprises:
Caller MSC judges whether to obtain from VLR the routing iinformation of described called mobile terminal, if then carry out the routing iinformation that described VLR from self obtains called mobile terminal according to the attribute information that continues of the called mobile terminal of preserving in advance; Otherwise, remove this calling, process ends.
In said method, described caller MSC comprises from the step that self VLR obtains the routing iinformation of called mobile terminal:
A1, caller MSC send the route data request of carrying called mobile terminal number to the VLR of self;
After a2, VLR receive this route data request, number according to the called mobile terminal that carries in the request judges whether this called mobile terminal belongs to described caller MSC, if, return the route data response that comprises this called mobile terminal routing iinformation then for called mobile terminal distributes route, and to caller MSC; Otherwise, return the routing failure response to caller MSC.
In said method, among the step a2, after VLR judges that called mobile terminal belongs to described caller MSC, and at VLR is before called mobile terminal distributes route, further comprise: VLR judges whether called mobile terminal is in idle condition, if then be implemented as the step that called mobile terminal distributes route; Otherwise, return the routing failure response to caller MSC.
In said method, described step a further comprises: caller MSC increases the sign that is used to represent to obtain from self VLR the called mobile terminal routing iinformation accordingly in this call record behind this end of calling.
In said method, described routing iinformation is Temporary Local Directory Number TLDN.
In sum, the inventive method takes to be obtained from self VLR Visitor Location Register VLR by caller MSC the routing iinformation of called mobile terminal, and according to the mode of the routing iinformation call proceeding of obtaining to called mobile terminal, realized to continue to the attaching position register (HLR) of called mobile terminal as caller MSC, and calling mobile terminal and called mobile terminal be when belonging to same MSC, and the calling mobile terminal call proceeding is to called mobile terminal.Thereby solved exist in the existing call connecting method when caller MSC can't continue attaching position register (HLR) to called mobile terminal, even the calling and called portable terminal belongs to same MSC, the problem that all will cause call proceeding failure has improved the success rate of call through.
Description of drawings
Fig. 1 is the existing mobile communications system structural representation.
Fig. 2 is existing mobile communication system call connection method flow chart.
Fig. 3 is a mobile communication system call connection method flow chart of the present invention.
Fig. 4 is the Signalling exchange flow chart of mobile communication system call connection method of the present invention.
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.
Core concept of the present invention is: the routing iinformation that is obtained called mobile terminal by caller MSC from self VLR Visitor Location Register VLR, and according to the mode of the routing iinformation call proceeding of obtaining to called mobile terminal, realized to continue to the attaching position register (HLR) of called mobile terminal as caller MSC, and calling mobile terminal and called mobile terminal be when belonging to same MSC, and the calling mobile terminal call proceeding is to called mobile terminal.
Describe call connection method of the present invention below in detail, the flow process of this method as shown in Figure 3, according to the inventive method, caller MSC sets in advance at specific called mobile terminal in self system, when caller MSC can't continue HLR to called mobile terminal ownership, obtain the attribute that continues of the routing iinformation of corresponding called portable terminal, i.e. BYPASS attribute from self VLR.The inventive method specifically comprises the steps:
Step 301: calling mobile terminal sends call business request (CM_SERVICE_REQ) by BSS to caller MSC.
Step 302: after caller MSC receives this CM_SERVICE_REQ, send position requests (INVOKE (OP_LOC REQ)) to the HLR that called mobile terminal belonged to.
Step 303: when caller MSC judges when can't connect the HLR that this called mobile terminal belongs to, inquire about the attribute information that continues that sets in advance in self system, by judging whether this called mobile terminal has the BYPASS attribute and judge at this called mobile terminal, whether caller MSC can directly obtain corresponding called routing iinformation from VLR, if then execution in step 304; Otherwise, execution in step 310.
Wherein, caller MSC is the error message (RETURN_PROBLEM (OP_LOCREQ)) that reports by message transfer part (MTP) SCCP (SCCP) and TCAP Transaction Capability Application Part (TCAP) or the timer expiry of caller MSC, and (INVOKE (LOC RES) judges can't connect HLR's that this called mobile terminal belongs to promptly not receive the position response that HLR returns in the timing length of setting.
Step 304: the VLR to this MSC sends the route data request (ROUTDATA_REQ) of carrying called mobile terminal number.
After step 305:VLR receives this ROUTDATA_REQ,, judge whether called mobile terminal belongs to caller MSC, if then execution in step 306 according to the number of the called mobile terminal that is comprised in the request; Otherwise, execution in step 309.
Step 306:VLR judges whether called mobile terminal is in idle condition, if then execution in step 307; Otherwise, execution in step 309.
Step 307:VLR is that called mobile terminal distributes a TLDN, and returns the route data response (ROUTDATA_RSP) of carrying this TLDN to caller MSC.
Step 308: after caller MSC receives the ROUTDATA_RSP that VLR returns, send call business response (CM_SERVICE_ACK) message to BSS, and, carry out normal call proceeding, process ends according to the TLDN paging called mobile terminal that obtains.
Because this call proceeding is directly to inquire about VLR by caller MSC to get access to after the TLDN number, continue with called mobile terminal, therefore behind this end of calling, MSC can increase specific sign in the record of this calling, as the BYPASS call identification, with expression and the ordinary call difference of flow process that continues, thereby be convenient to carry out subsequent business operation.
Step 309: return the response of called mobile terminal routing failure to caller MSC.
Step 310: caller MSC removes this calling, process ends.
More than be the method flow of a preferred embodiment of the inventive method, as shown in Figure 4 based on the Signalling exchange flow process of this embodiment method.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1, a kind of calling mobile exchanging center method of called mobile terminal that continues is characterized in that this method may further comprise the steps:
When caller MSC judges when can't connect the attaching position register HLR that called mobile terminal belongs to, caller MSC directly obtains the routing iinformation of called mobile terminal from self VLR Visitor Location Register VLR, and according to the routing iinformation call proceeding called mobile terminal that obtains.
2, method according to claim 1 is characterized in that, caller MSC judges when the request failure and can't connect the HLR that called mobile terminal belongs to by to the position requests of the HLR of called mobile terminal transmission at called mobile terminal.
3, method according to claim 2 is characterized in that, described caller MSC judges that the step that can't connect the HLR that called mobile terminal belongs to comprises: caller MSC receives the error message that message transfer part MTP reports.
4, method according to claim 2 is characterized in that, described caller MSC judges that the step that can't connect the HLR that called mobile terminal belongs to comprises: caller MSC receives the error message that SCCP SCCP reports.
5, method according to claim 2, it is characterized in that described caller MSC judges that the step that can't connect the HLR that called mobile terminal belongs to comprises: caller MSC receives error message or the caller MSC that TCAP Transaction Capability Application Part TCAP reports and do not receive the position response that HLR returns in the timing length of setting.
6, method according to claim 2 is characterized in that, described caller MSC further comprised obtain the routing iinformation of called mobile terminal from self VLR before: caller MSC preserves the attribute information that continues of called mobile terminal in advance;
When caller MSC judges when can't connect the HLR that called mobile terminal belongs to, the present invention further comprises: caller MSC is according to the attribute information that continues of the called mobile terminal of preserving in advance, judge whether to obtain from VLR the routing iinformation of described called mobile terminal, if then carry out the routing iinformation that described VLR from self obtains called mobile terminal; Otherwise, remove this calling, process ends.
7, method according to claim 1 is characterized in that, described caller MSC comprises from the step that self VLR obtains the routing iinformation of called mobile terminal:
A1, caller MSC send the route data request of carrying called mobile terminal number to the VLR of self;
After a2, VLR receive this route data request, number according to the called mobile terminal that carries in the request judges whether this called mobile terminal belongs to described caller MSC, if, return the route data response that comprises this called mobile terminal routing iinformation then for called mobile terminal distributes route, and to caller MSC; Otherwise, return the routing failure response to caller MSC.
8, method according to claim 7, it is characterized in that, among the step a2, after VLR judges that called mobile terminal belongs to described caller MSC, and at VLR is before called mobile terminal distributes route, further comprise: VLR judges whether called mobile terminal is in idle condition, if then be implemented as the step that called mobile terminal distributes route; Otherwise, return the routing failure response to caller MSC.
9, method according to claim 1 is characterized in that, described step a further comprises: caller MSC increases the sign that is used to represent to obtain from self VLR the called mobile terminal routing iinformation accordingly in this call record behind this end of calling.
10, according to any described method in the claim 1 to 9, it is characterized in that described routing iinformation is Temporary Local Directory Number TLDN.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100538706A CN100433849C (en) | 2005-03-14 | 2005-03-14 | Method of continuing main call mobile switching center to called mobile terminal |
| PCT/CN2006/000097 WO2006097028A1 (en) | 2005-03-14 | 2006-01-20 | Method for the calling mobile switch center connecting the called mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100538706A CN100433849C (en) | 2005-03-14 | 2005-03-14 | Method of continuing main call mobile switching center to called mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1835604A CN1835604A (en) | 2006-09-20 |
| CN100433849C true CN100433849C (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100538706A Active CN100433849C (en) | 2005-03-14 | 2005-03-14 | Method of continuing main call mobile switching center to called mobile terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100433849C (en) |
| WO (1) | WO2006097028A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1240102A (en) * | 1996-12-04 | 1999-12-29 | 诺基亚电信公司 | Call set-up in mobile communications system |
| CN1264528A (en) * | 1997-06-27 | 2000-08-23 | 诺基亚网络有限公司 | Routing of call forwarding accordig to basic services |
| US6167264A (en) * | 1995-08-21 | 2000-12-26 | Nokia Telecommunications Oy | Methods for processing an outgoing and an incoming call in a mobile communications system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI96815C (en) * | 1993-06-23 | 1996-08-26 | Nokia Telecommunications Oy | Procedure for making a call |
| DE19635581C1 (en) * | 1996-09-02 | 1997-10-23 | Siemens Ag | Cellular mobile communications network subscriber location method |
-
2005
- 2005-03-14 CN CNB2005100538706A patent/CN100433849C/en active Active
-
2006
- 2006-01-20 WO PCT/CN2006/000097 patent/WO2006097028A1/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167264A (en) * | 1995-08-21 | 2000-12-26 | Nokia Telecommunications Oy | Methods for processing an outgoing and an incoming call in a mobile communications system |
| CN1240102A (en) * | 1996-12-04 | 1999-12-29 | 诺基亚电信公司 | Call set-up in mobile communications system |
| CN1264528A (en) * | 1997-06-27 | 2000-08-23 | 诺基亚网络有限公司 | Routing of call forwarding accordig to basic services |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006097028A1 (en) | 2006-09-21 |
| CN1835604A (en) | 2006-09-20 |
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