CN100441033C - Method for providing playback of trans-network calling failure by mobile double-mode system - Google Patents

Abstract

The present invention relates to a method for providing playback for trans-network calling failure by a mobile double-mode system. Firstly, in a double-mode connection gateway, according to different failure conditions that roaming subscribers are called parties, correspondint playing numbers are configured. Then, after calling failure messages responded by a roaming network are received by the connection gateway, according to different failure reasons, the configured corresponding playing numbers are transmitted to an attribute network. Thus, the playing numbers can be used as calling parties to establish speech paths by the attribute network. The treatment of the failure conditions are felicitously led in speech connection under normal conditions by the present invention, which enables the modification of original network equipment to be avoided. The problem of correctly providing a playing prompt for a calling party who fails to be a called party roaming from the attribute network to the roaming network is simply and directly solved.

Description

Mobile dual mode system provides the method for inter-network call failure playback

Technical field

The present invention relates to field of mobile communication, when call failure, the method for the calling party plays callee's current state relates in particular to a kind of in mobile dual mode system, the user roams into roaming network when doing called failure from home network, and the method for playback is provided for the calling party.

Background technology

From the existing market situation, wireless network communications system is from being divided into two classes in logic: towards the Radio Network System and the data-oriented Radio Network System of voice.And telecom equipment provider more is accustomed to wireless communication system is divided into different several generations with operator: the first generation (1G) system is analog cellular and the cordless telephone towards voice; The second generation (2G) wireless network is towards the Digital Cellular System of voice and pcs system etc.; The third generation (3G) wireless network is in a speech business and packet-switched data service integration to the unified network.

The telecom operators of present China, there are the GSM of China Mobile and CHINAUNICOM, the IS-95 of CHINAUNICOM and the PHS (Personal Handyphone System) of China Telecom and Netcom in the main 2G system that adopts.GSM is the pan-European Digital Cellular System standard of ETSI for the support international roaming of second generation mobile communication formulation; IS-95 then is the standard of unique employing CDMA medium access way in the second generation digital cellular network, the Digital Cellular System that QualCom company proposes; And PHS is the mobile communication system that the cordless telephone standard is disposed on a large scale, is the expansion to fixed-line telephone network.

And on the other hand, people always wish in any place, can carry out communicating by letter of miscellaneous service (voice, data and multimedia) in any case.Yet, although exist multiple mobile communication system at present, for example 2G, 3G, WLAN and WPAN etc., but, also there is not a kind of mobile communication system can satisfy all communicating requirements of people at present because different communication systems all has its technical characterstic, market orientation and scope of application separately.

The requirement in user and market is encouraging the researcher to go to inquire into the possibility that realizes this all-round communicating requirement.And,, consider the possibility that their merge according to their different professional abilities, the different scope of application from existing communication network, for designing the wireless communication system that satisfies all-round communicating requirement, provide an approach.

For example, along with the customer volume of cdma network is day by day huge, on the one hand, because the characteristics of its technology of cdma network itself, colourful value-added service can be provided, such as at a high speed data service, positioning service, multimedia messaging service, MMS or the like, attracting the operator of a lot of GSM networks to wish can be its user on the network thus provides cdma network distinctive business, but can make full use of own original investment; On the other hand, the coverage of cdma network in the whole world do not have the GSM network big after all, and this makes CDMA user's international roaming become a great problem, so the operator of cdma network wishes that CDMA user can use the wider GSM network of covering when international roaming.The reason of this two aspect has been facilitated the fusion of GSM network and cdma network, and GSM 1X technology (also claims G﹠amp; C moves dual mode system) solved the problem that two nets merge.This technology can realize that GSM user uses the functions such as mutual international roaming between cdma network, CDMA user and the GSM user.For the operator that has GSM and cdma network simultaneously, can come to provide data service by upgrading CDMA1X network for two network users, operator can make full use of the data service advantage of CDMA 1X, reduce two net operation costs, differentiated service is provided, helps operator's balance cdma network and GSM network development.

In order to realize the mutual roaming of GSM network and cdma network, need between cdma network and GSM network, increase an equipment and be responsible for two network signals, parameter and professional conversion.This equipment is at 3GPP2 (Third Generation Partnership Project 2, the standardized partnership projects 2 of 3G (Third Generation) Moblie) is called IIF (Interworking and InteroperationFunction in the standard, interconnected interoperability function), in the technical specification of CHINAUNICOM, be called G﹠amp; C gateway (GSM﹠amp; The CDMA gateway).G﹠amp; The relevant enterprise standard that the detail of C gateway can be formulated with reference to N.S0028 agreement and the CHINAUNICOM of 3GPP2.

G﹠amp; C moves the dual mode system user can be divided into two classes again, and a class is the home subscriber of cdma network, is called CDMA Native Subscriber, and cdma network is exactly the home network of bimodulus card, and GSM is exactly a roaming network; One class is the GSM home subscriber, and at this moment, the GSM network is exactly its home network, and CDMA is exactly a roaming network.When the CDMA home subscriber was in cdma network, all business were all without G﹠amp; The C gateway, in like manner, when the GSM home subscriber was in the GSM network, all business were also without G﹠amp; The C gateway.Have only when the CDMA home subscriber roams into the GSM network or GSM home subscriber when roaming into cdma network, need be by G﹠amp; The C gateway is finished the conversion of two kinds of procotols, realizes the mutual and transmission of customer position information.

The user when across-network roaming, G﹠amp; The C gateway serves as HLR (the Home LocationRegister of its roaming network, attaching position register), yet, because MAP (Mobile Application Part between GSM and two networks of CDMA, MAP) difference of agreement, when being called out for the user of some across-network roamings, the calling subscriber can't hear the accurate playback of called subscriber's the present situation.For example:

When 1, the user shuts down in the GSM network, VLR (Visitor Location Register, VLR Visitor Location Register) can carry out mark (IMSI branch amorph) to state of user, but can not send message immediately to HLR, but after a while, even and user's start during this period of time, VLR can not send message to HLR yet.If there is call proceeding to arrive the user of this shutdown in this time period, HLR is ignorant, still sends the request of Providing Roaming Number (Provide_Roaming_Number_Req) message request roaming number to VLR, and VLR returns the information of user's shutdown.But in cdma network, if return the state of user's shutdown in route response (routreq) message, HLR will put the user and be off-mode.Like this when CDMA user roams to the back of shutting down in the GSM network by calling, though the calling subscriber can hear correct shutdown playback, if but the user is at IMSI (International mobile subscriber identity, when IMSI International Mobile Subscriber Identity) dividing amorph to finish preceding the start, CDMA HLR will can not know yet, cause this user can't finish called other business that waits.

Therefore be in IMSI branch amorph and do to provide correct playback for the calling subscriber when called when the CDMA home subscriber roams to the GSM network.

2, in the GSM network, the information that the user hurries is to transmit rather than transmit by MAP message by ISUP/TUP (isdn user's agreement/telephone subscriber's agreement) information, even the user is in busy condition, the landing office of GSM still distributes mobile station roaming number (MSRN) to allow call proceeding, has landing office to be responsible for playing busy recorded announcement to the calling subscriber after the call through.And in cdma network, the information that the user hurries transmits by MAP message, obtain information that the user does by Originating Office from MAP message after, give calling subscriber's playback notice;

This inconsistent meeting causes the GSM home subscriber to roam into cdma network to be in when being called out after the busy condition, can't to provide correct playback to the calling subscriber.

Therefore, how in mobile dual mode system, solve the requirement of operator, make the user roam into roaming network when doing called failure,, become the industry problem demanding prompt solution for the calling party correctly provides playback from home network to the playback business.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of mobile dual mode system that the method for inter-network call failure playback is provided, and makes the user roam into roaming network when doing called failure from home network, correct provides the playback prompting for the calling party.

For solving the problems of the technologies described above, the invention provides a kind of mobile dual mode system provides the method for inter-network call failure playback, at first connect in the gateway and make called different failure scenarios according to the roamer at bimodulus, dispose corresponding playback number, then after the connection gateway receives the call failure message of roaming network response, according to different failure causes, the corresponding playback number of configuration is sent to home network, like this, home network just can be set up speech path for the calling party according to this playback number.

Use the present invention and cleverly the processing of failure scenarios has been imported the speech connection under the normal condition, avoided modification to legacy network equipment, simply and directly solved from home network and roamed into roaming network when doing called failure, the correct problem that the playback prompting is provided for the calling party.

Description of drawings

Fig. 1 is for utilizing the present invention, and the CDMA home subscriber roams into the GSM network, and the user is in IMSI branch amorph and makes called embodiment flow chart;

Fig. 2 is for utilizing the present invention, and the GSM home subscriber roams into makes called embodiment flow chart after cdma network is in busy condition.

Embodiment

At current mobile dual mode system, for example G﹠amp; C moves in the dual mode system, why exist under some situation, the user of across-network roaming is during by call failure, the calling subscriber can't hear the problem of the accurate playback of called subscriber's the present situation, trace it to its cause, the main agreement difference that also is between the heterogeneous network, and cause the identification of call failure state is different with treatment mechanism.Therefore, access success under normal circumstances continues, and is generally all no problem, is to have ignored under the individual cases on the contrary, the processing during call failure.

For example, the mobile management of gsm system is all based on double-decker, and the upper strata is HLR, and lower floor is VLR, and each VLR administers a plurality of lane place.The VLR address at the current place of HLR recording user, the address, lane place at VLR recording user place.When travelling carriage moved to the new band of position, the VLR application location upgraded under this lane place immediately.This VLR may be identical with previous VLR, also may be a new VLR.Under a kind of situation in back, VLR sends application for registration to HLR, notifies previous VLR to carry out the position deletion by HLR.During call setup, at first cause search procedure, query requests is sent out to called HLR by mobile switching centre (MSC), HLR finds out the current place VLR of travelling carriage, and to its query requests, VLR with called in this VLR compass of competency more detailed positional information tell HLR, HLR tells MSC with the gained positional information again.But in cdma network, if return the state of user's shutdown in route response (routreq) message, HLR will put the user and be off-mode.Shut down when CDMA user roams in the GSM network like this, when starting shooting before IMSI divides amorph to finish again then, CDMA HLR will can not know yet, cause this user can't finish called other business that waits.

Owing to be issue handling at call abnormal situation, therefore the transmission mechanism in each automatic network of change that should be not too much, and these problems also do just to occur when called at across-network roaming, therefore, very natural, the sight of dealing with problems has just dropped on the connection gateway of two nets.Can know the User Status mark that roams to roaming network because connect gateway and be, just it is sent back in the process of home network and problem occurred, again because continuing of the normal condition of access success is no problem, problem may take place when having only call failure, so, effective solution is exactly the treatment mechanism when changing existing call failure, do not transmitting failure information to home network, but by gateway knowing that failure directly handled the situation of call failure afterwards, abnormal conditions are imported among the treatment mechanism of normal condition.

The present invention promptly makes according to above-mentioned thinking, core is exactly to utilize the playback number (as 8613309000000) of the specific transactions that operator provides, come the calling subscriber is carried out playback accurately, to solve the agreement difference between the heterogeneous networks, for example CDMA is different with GSM two net MAP, the problem that the partial service that is caused can't playback.

With G﹠amp; It is example that C moves dual mode system, only need be at G﹠amp; Playback number under the various call failure situations that configuration operator provides in the C gateway, operator only needs to increase the Subscriber Alerting Signal at specific playback number on original tone playing equipment basis, can solve the accurately problem of playback of afore-mentioned.The present invention has imported continuing under the normal condition with the processing of failure scenarios in this way cleverly, has avoided the modification to legacy network equipment, the playback problem when simply and directly having solved call failure.

Specifically, when when GSM 1X user roams to CDMA or GSM network from home network after, being called out, by G﹠amp; The C gateway is responsible for the MAP conversion between CDMA and the GSM network, the HLR that roaming number that visited network is sent here or failure reason value are delivered to home network, and then deliver to originating MS C and handle, work as G﹠amp; When the C gateway can't be changed the failure reason value that visited network is sent here, G﹠amp; The C gateway can be according to this failure reason value, read pairing playback number in the configuration, this playback number is back to the HLR of home network as roaming number, and then deliver to originating MS C and handle, the roaming number that originating MS C returns according to HLR (playback number) continues, and realizes the accurate playback to the calling subscriber.

Like this,, then abnormal conditions have been imported the handshaking procedure of right number, made calling party's this playback number that continues, uppick playback information by the playback number of failure reason value correspondence.

As shown in Figure 1, for utilizing the present invention, the CDMA home subscriber roams into the GSM network, and the user is in IMSI branch amorph and makes called embodiment flow chart, and whole handshaking procedure comprises the steps:

Step 11: when a certain user dials a GSM1X user who roams to the GSM network, with the calling subscriber is that the cdma network user is an example, the CDMA MSC/VLR that the calling subscriber visited sends position requests (LOCREQ) message to the CDMA HLR that GSM 1X user is belonged to, request called subscriber's routing iinformation;

Step 12:CDMA HLR finds that GSM 1X user is at this moment at G﹠amp; Register in the C gateway, to G﹠amp; The C gateway sends route requests (ROUTREQ) message, request called subscriber's roaming number.

Step 13:G﹠amp; Stored the real positional information of user in the GSM network in the C gateway, sent (PROVIDE_ROAMING_NUNBER) message that Provides Roaming Number, request called subscriber's routing iinformation to the GSM MSC/VLR that the user registered.

Step 14:GSM MSC/VLR finds that the user has been in the IMSI released state, returns the error reason value and give G﹠amp for absent subscriber (Absent Subscriber) in the MAP_ERROR response message; The C gateway.

Step 15:G﹠amp; The C gateway returns route requests response message (routreq) to CDMA HLR, wherein comprises interim local number (TLDN), and this number is from G﹠amp; The pre-configured shutdown playback number that the C gateway reads is as 8613000000000).

After step 16:CDMA HLR receives route requests response message (routreq), send position request response message (locreq), wherein comprise the shutdown playback number of from step 15, receiving to the CDMA MSC/VLR that the calling subscriber visited.

After step 17:CDMA MSC/VLR receives position request response message (locreq),, be established to the speech path of specific recorded announcement just according to shutdown playback number.

As shown in Figure 2, for utilizing the present invention, the GSM home subscriber roams into makes called embodiment flow chart after cdma network is in busy condition, and whole handshaking procedure comprises the steps:

Step 21: when a certain user dials the GSM 1X user who roams to cdma network, be that the GSM network user is an example with the calling subscriber.The GSM MSC/VLR that the calling subscriber visited sends route request information (SEND_ROUTING_INFO) to the GSM HLR of GSM 1X user attaching, request called subscriber's routing iinformation.

Step 22:GSM HLR finds that GSM 1X user is at this moment at G﹠amp; Register in the C gateway, 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 user in cdma network in the C gateway, sent route request information ROUTREQ, request called subscriber's routing iinformation to the CDMA MSC/VLR that the called subscriber registered.

Step 24:CDMA MSC/VLR finds that the user is current for busy condition, to G﹠amp; The C gateway returns route requests response message (routreq), and wherein admission reject is former because the user busy.

Step 25:G﹠amp; The C gateway returns the response message that Provides Roaming Number (PROVIDE_ROAMING_NUNBER_Ack) to GSM HLR, wherein roaming number (MSRN) is set to the playback number that pre-configured user does, as 8613309000000.

Step 26:GSM HLR returns route requests response message (SEND_ROUTING_INFO_Ack) to GSM MSC/VLR after receiving the response message (PROVIDE_ROAMING_NUNBER_Ack) that Provides Roaming Number.

After step 27:GSM MSC/VLR receives route requests response message (SEND_ROUTING_INFO_Ack), be established to the path of special recorded announcement according to roaming number (MSRN), for the calling subscriber plays the recorded announcement that the user does.

The embodiment of the invention roams into the playback business that cdma network or GSM network do when called from home network and describes in detail relating to the GSM1X mobile subscriber, those skilled in the art can understand, and 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.

For example, core thinking of the present invention is not only applicable to GSM 1X system, is applicable to other double mode or multi-mode mobile systems yet, for example the multi-mode system of PHS pattern and GSM or CDMA pattern composition; Be not only applicable to shutdown or subscriber busy condition, also be applicable to other call failure states, therefore, embodiment described above is an illustrative and nonrestrictive, 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 mobile dual mode system provides the method for inter-network call failure playback, it is characterized in that comprising the steps:

(1) in bimodulus connection gateway, makes called different failure scenarios, dispose corresponding playback number according to the roamer;

(2) after described connection gateway receives the call failure message of roaming network response,, the corresponding playback number that disposes is sent to home network according to different failure causes;

(3) described home network is set up speech path according to this playback number for the calling party.

2, mobile dual mode system as claimed in claim 1 provides the method for inter-network call failure playback, it is characterized in that described mobile dual mode system is a GSM 1X system, i.e. GSM and CDMA 1X system.

3, mobile dual mode system as claimed in claim 1 provides the method for inter-network call failure playback, it is characterized in that it is G﹠amp that the described bimodulus of step (1) connects gateway; C gateway, i.e. GSM﹠amp; The CDMA gateway.

4, mobile dual mode system as claimed in claim 1 provides the method for inter-network call failure playback, it is characterized in that step (1) is described makes called failure scenarios and roams to the GSM network for the CDMA home subscriber, the user is in IMSI branch amorph and does called time shutdown, and described step (2) comprising with step (3):

Step 11: the CDMA MSC/VLR that the calling subscriber visited sends location request message to the CDMA HLR that the CDMA home subscriber that roams to the GSM network is belonged to, request called subscriber's routing iinformation;

Step 12:CDMA HLR finds to roam to the CDMA home subscriber of GSM network at this moment at G﹠amp; Register in the C gateway, to G﹠amp; The C gateway sends route request information, request called subscriber's roaming number, G﹠amp; The C gateway is GSM﹠amp; The CDMA gateway;

Step 13:G﹠amp; Stored the real positional information of user in the GSM network in the C gateway, sent the message that Provides Roaming Number, request called subscriber's routing iinformation to the GSM MSC/VLR that the user registered;

Step 14:GSM MSC/VLR finds that the user has been in the IMSI released state, returns the error reason value and give G﹠amp for the absent subscriber in the MAP_ERROR response message; The C gateway;

Step 15:G﹠amp; The C gateway returns the route requests response message to CDMA HLR, wherein comprises the interim local number, and this number is from G﹠amp; The pre-configured shutdown playback number that the C gateway reads;

After step 16:CDMA HLR receives the route requests response message, send position request response message, wherein comprise the shutdown playback number of from step 15, receiving to the CDMA MSC/VLR that the calling subscriber visited;

After step 17:CDMA MSC/VLR receives position request response message,, be established to the speech path of specific recorded announcement according to shutdown playback number.

5, mobile dual mode system as claimed in claim 1 provides the method for inter-network call failure playback, it is characterized in that step (1) is described makes called failure scenarios and roams to cdma network for the GSM home subscriber, the user is in busy condition, and described step (2) comprising with step (3):

Step 21: the GSM MSC/VLR that the calling subscriber visited sends route request information to the GSM HLR of the GSM home subscriber ownership that roams to cdma network, request called subscriber's routing iinformation;

Step 22:GSM HLR finds to roam to the GSM home subscriber of cdma network at this moment at G﹠amp; Register in the C gateway, to G﹠amp; The C gateway sends the message that Provides Roaming Number, request called subscriber's roaming number;

Step 23:G﹠amp; Stored the real positional information of user in cdma network in the C gateway, sent route request information ROUTREQ, request called subscriber's routing iinformation, G﹠amp to the CDMA MSC/VLR that the called subscriber registered; The C gateway is GSM﹠amp; The CDMA gateway;

Step 24:CDMA MSC/VLR finds that the user is current for busy condition, to G﹠amp; The C gateway returns the route requests response message, and wherein admission reject is former because the user busy;

Step 25:G﹠amp; The C gateway returns the response message that Provides Roaming Number to GSM HLR, and wherein roaming number is set to the playback number that pre-configured user does;

After step 26:GSM HLR receives the response message that Provides Roaming Number, return the route requests response message to GSMMSC/VLR;

After step 27:GSM MSC/VLR receives the route requests response message, be established to the path of special recorded announcement according to roaming number, for the calling subscriber plays the recorded announcement that the user does.

6, mobile dual mode system as claimed in claim 1 provides the method for inter-network call failure playback, it is characterized in that described playback number provides in advance for common carrier.

7, mobile dual mode system as claimed in claim 1 provides the method for inter-network call failure playback, it is characterized in that the pairing voice messaging of described playback number is that common carrier is recorded in advance, and is provided in its corresponding tone playing equipment.

8, mobile dual mode system as claimed in claim 1 provides the method for inter-network call failure playback, it is characterized in that described mobile dual mode system is that GSM/PHS moves dual mode system.

9, mobile dual mode system as claimed in claim 1 provides the method for inter-network call failure playback, it is characterized in that described mobile dual mode system is that CDMA/PHS moves dual mode system.

Images