CN1758688A - Method for realizing calling tom service - Google Patents

Abstract

A method for realizing service of dressing ring includes receiving incoming call request by service main service channel ( SMSC ), obtaining user contract information from attribution position register by SMSC according to called number in incoming request, triggering intelligent calling flow to route call to dressing ring service voice server by SMSC according to obtained called user contract information, routing call to current access address main service channel of called user by dressing ring service voice server and returning message including current operation state information of called user back to dressing ring service voice server by current access address main service channel, broadcasting sound of dressing ring for calling user.

Description

A kind of method that realizes Ring Back Tone service

Technical field

The present invention relates to the CRBT service field in a kind of wireless communication technology, relate in particular to the method that the Ring Back Tone service in a kind of code division multiple access (CDMA) system is realized.

Background technology

Ring Back Tone service is a business that allows the cellphone subscriber for the handset customization CRBT of oneself, and the CRBT that the user can be customized is set to one section interesting to listen to music, perhaps one section recording.The mode of customized ring back tone specifically can comprise: select music that service provider (SP) or operator provide as CRBT on corresponding website by the Internet (INTERNET); Can also be by dialing special Ring Back Tone service access code, record user's voice or one section music CRBT as himself.

In the prior art, in cdma system, do not realize the method for Ring Back Tone service, thereby limited the service function of CDMA, make that the user can't obtain more fully, service freely, thereby limited the competitiveness of CDMA provider.

Therefore, there is defective in prior art, and awaits improving and development.

Summary of the invention

The object of the present invention is to provide a kind of method that realizes Ring Back Tone service, this method realizes Ring Back Tone service in cdma system, thereby change the too plodding present situation of the tinkle of bells in the existing cdma system, introduce interesting to listen to music and enrich the tinkle of bells of CDMA, with the service ability of expansion operator, and the corporate image of lifting operator.

Technical scheme of the present invention is as follows:

A kind of method that realizes Ring Back Tone service, it comprises:

A, calling user dials called number, the service MSC receives into call request, and the service MSC obtains called subscriber's CAMEL-Subscription-Information according to the called number of going in the call request from attaching position register;

B, service MSC trigger the intelligent call flow process according to the called user subscription information that obtains, and route the call to the Ring Back Tone service voice server;

C, Ring Back Tone service voice server route the call to the current visit of called subscriber ground MSC and return the message of the work at present state information that comprises the called subscriber to the Ring Back Tone service voice server, the Ring Back Tone service voice server is according to the called subscriber's work at present state in the message that obtains, be calling subscriber's coloring ring back tone playing, the Ring Back Tone service voice server cuts off the current speech channel of visiting the ground MSC with the called subscriber simultaneously;

D, when called subscriber's off-hook is replied, the current visit of called subscriber ground MSC sends and acknowledges message to the Ring Back Tone service voice server, the Ring Back Tone service voice server is connected the speech channel between calling subscriber and the called subscriber, stops coloring ring back tone playing simultaneously.

Described method, wherein, step B comprises:

B1, service MSC trigger the trigger in the user signing contract information, send to service control point and analyze message;

Whether B2, described service control point should business support Ring Back Tone service according to the content analysis in this analysis message with triggering, if not, then finish call business according to the general calling processing procedure.

Described method, wherein, among the described step B2, if Ring Back Tone service is not supported then execution in step in professional triggering ground:

B11, service control point judge whether Ring Back Tone service triggers, if then finish call business according to the general calling processing procedure, otherwise the mark Ring Back Tone service is to trigger for the first time;

B12, service control point issue a termination trigger for the service MSC, and the service MSC triggers this trigger, analyzes the message informing service control point to the service control point transmission and revises the called number of serving on the MSC;

B13, described service control point issue the transferred number that comprises Ring Back Tone service voice server routing address and called number content for the service MSC, the service MSC with this transferred number as the called number in calling out.

Described method, wherein, Ring Back Tone service voice server described in the described step C routes the call to the current visit of called subscriber ground MSC, comprising:

C11, Ring Back Tone service voice server route the call to called G MSC;

C12, called G MSC obtain called subscriber's CAMEL-Subscription-Information by attaching position register, trigger the trigger in this CAMEL-Subscription-Information, send to service control point and analyze message;

C13, service control point are received analysis message, judge whether Ring Back Tone service has carried out triggering for the first time, if then remove the mark of mark Ring Back Tone service for triggering for the first time, carry out other IN services except that Ring Back Tone service; Otherwise, return described step B13, carry out Ring Back Tone service.

Described method, wherein, triggering for the first time described in the described step C13 comprises:

C14, service control point indicate called G MSC to send position request information to attaching position register;

C15, described attaching position register obtain the TLDN of the current visit of called subscriber ground MSC, return to called G MSC;

After C16, described G MSC judge that this TLDN effectively, send analysis message to service control point;

C17, described service control point return the response message of this analysis message, and indication G MSC continues call treatment, and the G MSC routes the call to the current visit of called subscriber ground MSC.

A kind of method that realizes color tinkling of pieces of jade business provided by the present invention by increasing a Ring Back Tone service voice server, is upgraded to the SCP business software and can be realized Ring Back Tone service, need not to change conventional network equipment, is easy to promote and enforcement to the user.

Description of drawings

Fig. 1 is a Ring Back Tone service networking diagram of the present invention;

Fig. 2 is the Ring Back Tone service signaling process figure of the embodiment of the inventive method;

Fig. 3 is the continuous figure of the Ring Back Tone service signaling process figure of the embodiment of the present invention's strick precaution.

Embodiment

Below in conjunction with accompanying drawing, will carry out comparatively detailed explanation to each preferred embodiment of the present invention.

The present invention realizes in the method for Ring Back Tone service that this method has realized only increasing Ring Back Tone service voice server RBTS and service provider SP, and under the situation of the mobile switching centre that need not to upgrade, has realized Ring Back Tone service in cdma network.

As shown in Figure 1, the inventive method increases and SP in cdma network, wherein, RBTS is used to provide the CRBT voice resource, and the voice of broadcast customization before call through, this RBTS not only has exchange capacity as switch, and also has a database, the in store user profile of CRBT and the CRBT of various customization of having contracted, the user can or dial the various voice that specific phone selects operator to provide by the SP shown in the figure, this setting play specific CRBT both can for certain specific calling subscriber, can further include in the different time periods and play different CRBT.

When other user dialed this user, RBTS was according to called number, calling number, and the current time, CRBT of called Information Selection such as state is play on current relaying; SP provides various CRBT to the user, and the CRBT that the user is selected uploads on the RBTS; The service control point (SCP) plays a part control and handles IN service in whole intelligent net system; MSC MSC mainly finishes Service Switching Function and CCF.

(G) MSC shown in the figure realizes triggering the professional first time, i.e. the triggering of Ring Back Tone service, and MSC realizes triggering the professional second time as called subscriber's visited MSC, i.e. PPC, the triggering that VPN etc. are professional; Attaching position register HLR mainly is the essential information that is used to preserve mobile phone, comprises the signing service information that is used for intelligent call, and when mobile phone location upgraded (mobile phone power-on or mobile phone location change), HLR sent to MSC with these information.Service management point SMP realizes that in the figure, thick line is represented trunk line, can transmit speech and signaling, and other fine rule or dotted line is represented signaling link and data link respectively, can only transmit signaling and data to the management of the various data of SCP.

Because the inventive method is applied in the cdma network, therefore, the callee of the inventive method is CDMA user, and the calling party then can be CDMA user, perhaps is other communication networks user who comprises fixed network user, gsm (GSM) user.

When the calling party is CDMA user, the service MSC in the cdma system be the visit ground MSC of this caller when the calling party is other communication networks user, the service MSC in the cdma system is mobile switching centre's gateway (GMSC) of CDMA.

Realize that on cdma system Ring Back Tone service need carry out twice triggering, be respectively: professional for the first time the triggering, the GMSC/MSC of CDMA net triggers the professional flow process that triggers, and user's calling is routed on the RBTS that the CRBT voice resource is provided, and handles Ring Back Tone service; Professional for the second time the triggering handled other IN services.

In each flow chart of the following stated, capitalization that occurs and lowercase are represented message and corresponding with it response message respectively in pairs.As shown in Figure 2, the first time in the Ring Back Tone service of the present invention, professional the triggering specifically comprised:

Step 201: calling user dials called number, make a call to the CDMA called subscriber, called service MSC receives this and goes into to call out, and this is gone into calling and is the calling that the called subscriber carried out to the Ring Back Tone service of having contracted, and call contents comprises calling number and called number at least; Wherein, when the calling subscriber was CDMA user, service MSC visited ground MSC for the calling subscriber, when the calling subscriber is that serving MSC is the GMSC of the cdma system of called subscriber's ownership place when comprising the user of other communication networks of fixed network and GSM;

Step 202: service MSC receives into calling, judge that according to the called number in going into to call out obtaining the called subscriber is CDMA user, trigger mobile phone called (Mobile Termination) trigger, trigger the called flow of mobile phone, thereby make service MSC send position requests (LOCREQ) message to HLR, with the CAMEL-Subscription-Information of acquisition request called subscriber on HLR, wherein, comprise CSI called subscriber identification, service MSC sign (MSCID) and the trigger type that is set to Mobile Termination in this location request message at least:

Step 203:HLR receives LOCREQ message, in self database, search the CAMEL-Subscription-Information that obtains this called subscriber according to the CSI called subscriber identification in this message, then, HLR returns the LOCREQ response message to service MSC, at least the information that comprises the initial termination trigger (Initial Termination) in the called user subscription information in this response message, if the called subscriber is intelligent subscriber, also further comprise for example location (Location) in this message, called routing address can be used the trigger information of (CalledRouting Address Available);

In above step 201---in the step 203, service MSC obtains the CAMEL-Subscription-Information of called subscriber on HLR by HLR, so that carry out professional triggering first time according to this CAMEL-Subscription-Information;

Step 204: called flow triggers Initial Termination trigger, service MSC detects called flow and triggers this trigger, send analytical information (ANLYZD) message to SCP, comprise the trigger type, calling number, called number, the sign (MSCID) of service MSC and the positional information on professional triggering ground that are set to Initial Termination in this analysis message at least;

Step 205:SCP receives the ANLYZD message described in the step 204, visited MSC ID according to the caller in this message judges whether this service MSC location as the ground of business triggering for the first time supports Ring Back Tone service, if not, then finish calling procedure according to the ordinary call operation flow, otherwise, SCP is according to the called number in the ANLYZD message of receiving, whether this called subscriber has registered Ring Back Tone service at its data library lookup, if not, then finish calling according to the ordinary call operation flow, otherwise, judge whether Ring Back Tone service mark (RBTFlag) is 0, if not, then do not carry out subsequent step, directly according to finishing calling to the called subscriber with the irrelevant general processing procedure of Ring Back Tone service; If RBTFlag is 0 then RBTFlag is changed to 1, with professional triggering first time in the sign Ring Back Tone service;

In above step 204---in the step 205, calling subscriber's trigger intelligent business is analyzed the calling subscriber to SCP I SCP and whether is supported Ring Back Tone service with visiting, and judge whether the called subscriber has registered Ring Back Tone service, if the judged result of above two judgements is be, then tagged traffic has carried out the professional for the first time processing that triggers, so that distinguish with professional next time triggering the in the Ring Back Tone service;

Step 206:SCP returns anlyzd and acknowledges message to service MSC, wherein, comprise senior _ termination (Advanced Termination) trigger in the terminal list parameter of this response message, utilize this trigger in subsequent step, to realize utilizing transferred number to revise called number in the calling, thereby the calling that will serve MSC is routed to RBTS I and further is routed to the current visit of called subscriber ground MSC;

Step 207: service MSC receives the response message of step 206, trigger senior _ termination (Advanced Termination) trigger, send ANLYZD message to SCP, SCP carries out follow-up step 208-210 with indication, thereby utilize transferred number to revise the called number of service MSC in going into to call out, wherein, the trigger type of ANLYZD message is Advanced Termination;

In above step 206---in the step 207, SCP comprises senior _ termination trigger in the terminal list parameter of the response message that service MSC issues, and service MSC triggers this trigger, informs that SCP begins the called number of going into to call out among the service MSC is made amendment.

Step 208:SCP is to the response message of ANLYZD message described in the service MSC forwarding step 207, comprise transferred number in this response message, this number transmits by variable TermList, and its form is: TermList=Ring Back Tone service routing number (RTDGT)+called subscriber MDN;

Wherein, RTDGT represents the route position of RBTS, and MDN is an included called number in calling out;

Step 209: it is effective that service MSC judgement obtains transferred number, analyzes needs according to the RTDGT in the transferred number RBTS is arrived in call proceeding, and service MSC sends initial address message (IAI) wherein to RBTS, and the called number among the IAI is set as transferred number; Calling is routed on the RBTS that the CRBT voice resource is provided, and handles the business relevant with CRBT;

In above step 208---in the step 209, SCP utilizes transferred number to revise the called number of going into to call out among the service MSC, and routes the call to RBTS according to this transferred number, finishes the business relevant with CRBT;

Step 210:RBTS is according to the RTDGT of transferred number among the IAI that receives, analysis draws this calling subscriber and has triggered Ring Back Tone service, then, RBTS peels off the RTDGT in the transferred number, RBTS routes the call among called subscriber's the gateway MSC (GMS C), this GMSC makes RBTS include only called MDN in the called number of the current visit of called subscriber ground IAI that MSC sends as the ground of business triggering for the second time;

In above step 212, RBTS directly routes the call to the current visit of called subscriber ground MSC according to transferred number, to reduce the alternative channel that may occur in the subsequent step.

Above step has been finished professional for the first time the triggering, has realized the relevant treatment to Ring Back Tone service.

As shown in Figure 3 because the inventive method routes the call among the GMSC in first time trigger process, therefore, in the methods of the invention, with GMSC as the professional ground that triggers for the second time; Professional for the second time triggering flow process specifically comprises:

Step 301: by triggering for the first time, after calling is routed to GMS C, it is a CDMA user that GMSC obtains the called subscriber according to the called subscriber MDN in this calling, trigger the MobileTermination trigger, send LOCREQ message to HLR, to obtain this called subscriber's CAMEL-Subscription-Information, wherein the trigger type in the LOCREQ message is set to Mobile Termination;

Step 302:HLR obtains this user's CAMEL-Subscription-Information according to called subscriber MDN, return LOCREQ and acknowledge message to GMSC, in this response message at least.Comprise the trigger information (Initial Termination) in the called user subscription information,, also further comprise for example Location in this message, the trigger information of Called`Routing Address Available if the called subscriber is intelligent subscriber;

Step 303: called flow triggers Initial Termination trigger, GMSC sends ANLYZD message to SCP, comprises the MSCID on the trigger type that is set to Initial Termination, calling number, called number, called triggering ground in this analysiss message at least;

Step 304:SCP obtains this called subscriber according to the called number analysis in the ANLYZD message and has registered Ring Back Tone service, judges that then the RBTFlag obtain being used for the identification service triggering times is 1, and then SCP is returned as 0 with RBTFlag; Wherein, the effect of RBTFlag is to distinguish professional for the first time the triggering and professional for the second time the triggering, and the initial value of RBTFlag is.When carrying out the first time during professional the triggering, RBTFlag is changed to 1, and when carrying out the second time during professional the triggering, the value of RBTFlag is changed to 0, needs when one side is carried out Ring Back Tone service in order to identify triggering for the second time, on the other hand RBTFlag to be returned initial value to satisfy next time;

Step 305:SCP issues the GMSC that acknowledges message to of ANLYZD message in the step 303;

Wherein, for domestic consumer, SCP directly issues this response message, and for intelligent subscriber, then SCP after handling the IN service flow process of this intelligent subscriber, issues this response message ingeniously again, adopts the mode that directly issues in the embodiment of the invention;

Step 306: according to the fixed configurations in the call flow, called GMSC detects the Location trigger at this moment, trigger this trigger, send LOCREQ message to HLR, so that obtain called subscriber's routing iinformation from HLR, wherein, the trigger type of LOCREQ message is that Location adds trigger in this step;

Step 307: because in embodiments of the present invention, the GMSC that triggers ground as business and called subscriber visit MSC inequality, therefore, HLR according to the second time in the LOCREQ message that obtains the professional MSCID that triggers ground GMSC judge obtain the professional MSCID that triggers ground be kept at HLR from the current visit of called subscriber on one's body the MSCID of MSC different, therefore HLR sends route request information (ROUTREQ) to the current visit of called subscriber ground MSC, the mobile identification code (MIN) that comprises the called subscriber in this message, the current visit of called subscriber ground MSC is this called subscriber's distribution T LDN number according to MIN, response message by ROUTREQ message returns to HLR, and HLR returns to GMSC by the response message of LOCREQ message with this TLDN number again;

Step 308-step 309 is according to call flow, GMSC triggers the Called-Address-Available trigger, judge obtain current called number effectively after, send ANLYZD message to SCP, the TLDN that called routing number parameter in this message is set in the step 507 to be obtained, send the GMSC that acknowledges message to of ANLYZD message, indication GMSC continues call treatment;

Step 310---step 312:GMSC is according to the TLDN number in the IAI message, ground MSC sends IAI message to the current visit of called subscriber, thereby to the current visit of called subscriber ground MSC, this MSC sends foundation calling and ALERTING message (Setup﹠amp to called subscriber's travelling carriage (ms) again with call proceeding; Alert), thus with call proceeding to called ms, be routed to called ms after, the current visit of called subscriber ground MSC returns ACM message to GMSC, represents to be routed to called; Wherein, can represent among the ACM that whether the user is at that time in conversation; GMSC transmits ACM to RBTS; RBTS analyzes the information of ACM, and the judgement user is current to be talking state or idle condition, according to this judged result, and according to the Ring Back Tone service that the user customized, under the situation of speech channel between temporary transient disconnection and called subscriber, to calling subscriber's coloring ring back tone playing;

Step 313: called subscriber's off-hook, called visit ground MSC sends response message (ANM) to GMS C, and GMSC sends response message (ANM) to RBTS, and RBTS stops coloring ring back tone playing, and connects the speech channel between calling subscriber and the called subscriber;

Step 314:GMSC reports called party answer (TANS WER) message to SCP, and indication SCP begins to charge, and then, begins normal talking between the calling and called.

In the present embodiment, owing to do not obtaining the current MSCID that visits ground MSC of called subscriber in the professional trigger process for the first time, thereby can only when finishing, trigger process route the call to GMSC in the first time, but still realized Ring Back Tone service, and need not to change conventional network equipment, be easy to promote and enforcement to the user.

Should be understood that above-mentioned description at embodiment is comparatively detailed, can not therefore think the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims.

Claims (5)

1. method that realizes Ring Back Tone service, it comprises:

A, calling user dials called number, the service MSC receives into call request, and the service MSC obtains called subscriber's CAMEL-Subscription-Information according to the called number of going in the call request from attaching position register;

B, service MSC trigger the intelligent call flow process according to the called user subscription information that obtains, and route the call to the Ring Back Tone service voice server;

C, Ring Back Tone service voice server route the call to the current visit of called subscriber ground MSC and return the message of the work at present state information that comprises the called subscriber to the Ring Back Tone service voice server, the Ring Back Tone service voice server is according to the called subscriber's work at present state in the message that obtains, be calling subscriber's coloring ring back tone playing, the Ring Back Tone service voice server cuts off the current speech channel of visiting the ground MSC with the called subscriber simultaneously;

D, when called subscriber's off-hook is replied, the current visit of called subscriber ground MSC sends and acknowledges message to the Ring Back Tone service voice server, the Ring Back Tone service voice server is connected the speech channel between calling subscriber and the called subscriber, stops coloring ring back tone playing simultaneously.

2, method according to claim 1 is characterized in that, step B comprises:

B1, service MSC trigger the trigger in the user signing contract information, send to service control point and analyze message;

Whether B2, described service control point should business support Ring Back Tone service according to the content analysis in this analysis message with triggering, if not, then finish call business according to the general calling processing procedure.

3, method according to claim 2 is characterized in that, among the described step B2, if Ring Back Tone service is not supported then execution in step in professional triggering ground:

B11, service control point judge whether Ring Back Tone service triggers, if then finish call business according to the general calling processing procedure, otherwise the mark Ring Back Tone service is to trigger for the first time;

B12, service control point issue a termination trigger for the service MSC, and the service MSC triggers this trigger, analyzes the message informing service control point to the service control point transmission and revises the called number of serving on the MSC;

B13, described service control point issue the transferred number that comprises Ring Back Tone service voice server routing address and called number content for the service MSC, the service MSC with this transferred number as the called number in calling out.

4, method according to claim 3 is characterized in that, Ring Back Tone service voice server described in the described step C routes the call to the current visit of called subscriber ground MSC, comprising:

C11, Ring Back Tone service voice server route the call to called G MSC;

C12, called G MSC obtain called subscriber's CAMEL-Subscription-Information by attaching position register, trigger the trigger in this CAMEL-Subscription-Information, send to service control point and analyze message;

C13, service control point are received analysis message, judge whether Ring Back Tone service has carried out triggering for the first time, if then remove the mark of mark Ring Back Tone service for triggering for the first time, carry out other IN services except that Ring Back Tone service; Otherwise, return described step B13, carry out Ring Back Tone service.

5, method according to claim 4 is characterized in that, triggers for the first time described in the described step C13 to comprise:

C14, service control point indicate called G MSC to send position request information to attaching position register;

C15, described attaching position register obtain the TLDN of the current visit of called subscriber ground MSC, return to called G MSC;

After C16, described G MSC judge that this TLDN effectively, send analysis message to service control point;

C17, described service control point return the response message of this analysis message, and indication G MSC continues call treatment, and the G MSC routes the call to the current visit of called subscriber ground MSC.

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