CN1917532A - Realization method and system of sending color ring in multimedia based on mobile communication network - Google Patents
Realization method and system of sending color ring in multimedia based on mobile communication network Download PDFInfo
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Abstract
The system comprises: core network elements (MSC Server,MGW,HLR) in WCDMA R4 mobile network and a MRBT (multimedia ring back tone) platform composed of SAN (signaling access node),AS (application server), MS (media server), DB (database) and server of portal website. The method thereof comprises: adding the ID of MRBT in called HLR; according to the ID and load type of MRBT, the calling MSV server /MGW routes the MRBT call to the home MRBT platform of the called party; the home MRBT platform plays back the MRBT to the calling party; after the called party is off hook,the MRBT platform makes bridging connection between the calling and called MSC Servers/MGWs to implement the video call between both of them; The MRBT platform implements the accurate counting for the calling party by sending the special BICC ACM (address complete message) signaling and the ANM (answer message) signaling.
Description
Technical field
The present invention relates to a kind of implementation method and system of 3G Multimedia Ring Back Tone service, exactly, relate to a kind of implementation method and system of the Multimedia Ring Back Tone service based on WCDMA R4 mobile radio communication, belong to the value-added service technical field in the 3G (Third Generation) Moblie.
Background technology
3G network is 2G networks development and extension, and it has broken 2G networks development bottleneck, for operator creates more new opportunity.Moving the application of application and video content is the vital pulling point of 3G business development, also is to help operator to promote the key of every user's average income (ARPU).3G network can provide more bright and colourful, hommization more, the more professional and service of high quality-of-service with faster rate, and the user will be correspondingly will obtain more diversification, more excellent application experience.
Multimedia color ring back tone (MRBT, Multimedia Ring Back Tone) business is in the visual telephone service of 3G mobile communications network circuit domain, by a value-added service of called subscriber's customization.Its major function is when 3G calling subscriber dials the 3G called subscriber in the video telephone mode, when being called subscriber's ring, system can for the calling subscriber play a section of customizing in advance by the called subscriber gorgeous, melodious, have media stream individual character, that form by multiple media contents such as audio frequency, video, pictures, substitute common ring-back tone or common 2G CRBT (CRBT, Color Ring Back Tone).
But, because Multimedia Ring Back Tone service is not the 3G basic service, but value-added service, how under 3G network, to realize the technical problem that multimedia color ring back tone has become the focus that those skilled in the art pay close attention to and has been badly in need of solving.
Summary of the invention
In view of this, the purpose of this invention is to provide the implementation method and the system of the Multimedia Ring Back Tone service of a kind of WCDMA (R4) mobile radio communication, thereby under 3G network, realize Multimedia Ring Back Tone service, the effect of doulbe-sides' victory is provided for user and operator based on 3G.
In order to achieve the above object, the invention provides a kind of system of realization Multimedia Ring Back Tone service of the WCDMA R4 mobile radio communication based on 3G, comprise the core network element of WCDMA R4 mobile network: the mobile SoftSwitch MSC Server of end office (EO), end office's media gateway MGW and attaching position register HLR; It is characterized in that: described system also comprises the multimedia color ring back tone MRBT platform that a signaling access point SAN by interchange information, application server AS, media server MS, database server DB and door managing web server Portal are formed, the function of this MRBT platform is: when caller MSC Server/MGW the multimedia color ring back tone call proceeding to the MRBT platform, the MRBT platform is responsible for carrying out Signalling exchange with caller and called MSCServer/MGW; MGW by caller is to calling subscriber's play multimedia CRBT; And by the MRBT platform caller and called MSC Server/MGW bridge joint are got up, finish caller and called between medium connect, realize the video calling between the caller and called users; Multi-media ringtone resource, user profile are stored, administered and maintained, service provider SP is managed; The service management and the customization operations of web mode are provided for system manager and user.
The function of each physical components is respectively in the described multimedia color ring back tone MRBT platform:
Signaling access point SAN: realize independently calling out with carrying between MRBT platform and caller, the called MSC Server reception and the transmission of control BICC signaling, give application server AS after SAN changes signaling and handle, finish continuing of speech channel;
Database server DB:, be used to store user's business datum and multi-media ringtone resource data as the core database of MRBT platform; And can only visit this database by database access interface;
Application server AS: all resources of control and management MRBT platform, message is carried out Real-time and Concurrent to be handled, carry out the Multimedia Ring Back Tone service logic,, safeguard communication interface with other functional entity by the action of initial session Session Initiation Protocol control media server MS;
Media server MS: accept the control of AS, audio frequency, video and other media resource comprised literary composition language conversion, layering and adaptive various processing, by MGW to user's play multimedia bell sound media resource;
Door managing web server Portal: the access approach of the web mode of MRBT platform is provided, is used for the management of system manager's realization to system, user and service provider SP, the user realizes professional customization, the management of bell sound resource.
Described multimedia color ring back tone platform is supported following agreement at least: the call control protocol that comprises ISDN User Part, Bearer Independent Call Control Protocol, Session Initiation Protocol: comprise the H.248/Megaco medium control protocol of agreement, Session Initiation Protocol, MGCP agreement: the media processing protocol that comprises RTP/RTCP agreement, RTSP agreement; Comprise G.711, G.723.1, G.729AB the speech coding form and H.261, H.263, the various media format protocol of MPEG4 video code model.
Attaching position register HLR in the described system is a database of being responsible for mobile subscriber's management, and user's all subscription data and mobile subscriber's positional information are administered in storage to some extent, need increase following function:
Increase the multimedia color ring back tone sign SS_code of expression called subscriber for the multimedia color ring back tone user.
The MSC Server/MGW of the caller in the described system will increase following function:
Caller MSC Server/MGW can confirm multimedia color ring back tone sign SS_code in the SRI_ACK message according to the transmission routing iinformation that HLR issues, with the MRBT platform of call proceeding to called ownership;
When caller MSC Server/MGW breathed out the multimedia color ring back tone platform, called number should be: route prefix+called Mobile Subscriber International ISDN number MSISDN+ called roaming number MSRN.
In order to achieve the above object, the present invention also provides a kind of method of realization Multimedia Ring Back Tone service of the WCDMA R4 mobile radio communication based on 3G, it is characterized in that: for the multimedia color ring back tone user increases multimedia color ring back tone sign SS_code, caller MSC Server/MGW calls out multimedia color ring back tone on the multimedia color ring back tone platform that is routed to called ownership according to the multimedia color ring back tone sign in the HLR of called ownership; By the multimedia color ring back tone platform to caller play multimedia CRBT; Behind the called off-hook, caller of multimedia color ring back tone platform bridges and called MSC Server/MGW realize the video calling between the calling and called; The multimedia color ring back tone platform is realized accurate billing by sending special Address Complete Message ACM signaling and response message ANM signaling among the BICC to caller MSC Server/MGW to caller.
Described method comprises the following steps:
(1) after the calling subscriber called out and to have customized Multimedia Ring Back Tone service called, caller MSCServer/MGW obtained called Mobile Station Roaming Number MSRN and multimedia color ring back tone sign SS_code from called HLR;
(2) caller MSC Server/MGW sends the initial address message IAM signaling of BICC to the MRBT of called ownership platform, and wherein called number is filled out and is the Mobile Subscriber International ISDN number MSISDN that route prefix+called MS RN+ is called;
(3) the MRBT platform of called ownership judges that this calling is the Multimedia Ring Back Tone service calling, remove route prefix, called MS ISDN, preceding commentaries on classics number of times parameter in the IAM signaling of receiving, then IAM message is routed to the MSC Server/MGW of called ownership, wherein called number is filled out and is called MS RN;
(4) called MS C Server/MGW finds the called subscriber, and after learning the called free time, returns the application transport mechanism APM signaling of BICC to the MRBT platform of called ownership; After the MRBT of called ownership platform was received this signaling, loopback APM gave caller MSC Server/MGW; MRBT carries out the Nb interface initialization procedure with caller and called MGW respectively; After the called MS C Server/MGW loopback MRBT platform Address Complete Message ACM signaling, the MRPT platform is to the special ACM signaling of caller MSC Server/MGW loopback one; H.245 MRBT platform and calling terminal carry out protocol handshake consults, and broadcasts the multimedia color ring back tone of called custom-made according to the logical relation of numbers of calling and called parties to calling UE, suppresses the local bell sound that produces of calling terminal;
(5) when called press video calling mode off-hook after, after the MRBT platform receives the response message ANM signaling that called MS CServer/MGW sends, stop the play multimedia CRBT, and the special ANM signaling of loopback caller MSC Server/MGW one, H.245 protocol negotiation process between foundation and the terminal called is opened logical channel, enters talking state, speech channel Media Stream between " bridge joint " calling and called makes to begin video calling between the calling and called;
(6) video calling finishes, and the MRBT platform is removed the H.245 logical channel between the calling and called, discharges relevant bearer.
In the described step (4), the MRPT platform is to use " optional back is to calling out expression language parameter " to come the identification of multimedia CRBT to call out in ACM to one of caller MSC Server/MGW loopback special Address Complete Message ACM signaling, promptly selects for use to be the domestic some extension bits that keep of using in " optional back is to calling out expression language parameter ": the sign position that call out as multimedia color ring back tone as this calling of expression E position or F position or G position or H position;
After caller MSC Server received this ACM, its handling process was adjusted into: whether after caller MSC Server receives the ACM signaling, judging in the signaling earlier has " optional back is to calling out expression language parameter ",, then handle by the normal call flow process if do not have; If have, judge then whether the sign position of the multimedia color ring back tone calling of this parameter is the numerical value that the expression multimedia color ring back tone is called out; If then handle according to following order: putting call identification is that MRBT calls out, sends ring Alerting signaling, sends connection Connect signaling to calling terminal to calling terminal; If not, then handle by the normal call flow process.
In the described step (5), the MRPT platform uses " optional back is to calling out expression language parameter " to come the identification of multimedia CRBT to call out in the special response message ANM that caller MSC Server sends, and promptly selects for use to be the domestic a certain position extension bits that keeps of using in " optional back is to calling out expression language parameter ": the sign position that call out as multimedia color ring back tone as this calling of expression E position or F position or G position or H position;
After caller MSC Server received this ANM, its handling process was adjusted into: after caller MSC Server receives this ANM signaling, judge according to the sign position that multimedia color ring back tone is called out whether current calling is that MRBT calls out; If not, then handle by the normal call flow process; If, then suppress to send the Connect signaling to calling terminal, begin to charge for caller.
The concrete extended method of the sign position that the multimedia color ring back tone that keeps in described " optional back is to calling out expression language parameter " is called out is: in ACM and ANM signaling, E position or F position or G position or H position are promptly selected in the sign position of selecting same position to call out as multimedia color ring back tone; And the setting identification position is 1, represents that this calling is that multimedia color ring back tone is called out; The sign position is 0, is expressed as normal call.
H.245 the protocol negotiation process of carrying out between the MRBT platform of described step (4) and (5) and the calling and called terminal further comprises following operating procedure: if user terminal is supported window formula numbering host-host protocol WNSRP standard simply again, then adopt WNSRP standard acceleration negotiations process H.245; If the calling and called terminal is not supported the WNSRP standard, then carry out following processing operation: the timer numerical value in each stage in dwindling H.245; Many H.245 negotiation message be assembled into a message bag and send, to accelerate negotiations process.
Advantage of the present invention and effect are: this system changes little to 3G network equipment, commence business fast easily, and common speech CRBT and multimedia color ring back tone are separated on call treatment fully, can ensure the stability of existing Ring Back Tone service.
Can make 3G subscription when enjoying common Ring Back Tone service, increase the new experience of Multimedia Ring Back Tone service again.Increasing along with the 3G mobile subscriber, under the Multimedia Ring Back Tone service customer group increase situation gradually, the platform in the system of the present invention can independently be built, the smooth evolution transition; Promptly only the multimedia color ring back tone platform is increased the expansion of system handles capacity, directly utilize the data storage part and the management equipments such as user/business of common color ring platform; Under the situation that common color ring user reduces, can carry out the equipment transformation that reuses, directly use software upgrading to arrive multimedia color ring back tone platform MRBT common Ring Back Tone service platform CRBT, save the equipment investment expense greatly.
In addition, Multimedia Ring Back Tone service of the present invention system has complete signaling interface, supports multiple networking mode, adopt central controlled distribution process mode, can dispose flexibly and adjust according to professional consumption between each network element, ecad be strong, has good application prospects.
Description of drawings
Fig. 1 is that the system configuration that realizes Multimedia Ring Back Tone service in the mobile radio communication of the present invention is formed schematic diagram.
Fig. 2 is that the multimedia color ring back tone platform structure in the system of the present invention is formed schematic diagram.
Fig. 3 is to use the call signalling flow schematic diagram of the Multimedia Ring Back Tone service of the inventive method.
Fig. 4 is that language parameter field schematic diagram is represented to calling out in the optional back of using in the inventive method.
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.
Referring to Fig. 1 and Fig. 2, introduce the system of the realization Multimedia Ring Back Tone service of a kind of WCDMA based on 3G of the present invention (R4) mobile radio communication, this system comprises the core network element of WCDMA R4 mobile network: the mobile SoftSwitch MSC Server of end office (EO), end office's media gateway MGW, attaching position register HLR and the multimedia color ring back tone platform that the signaling access point SAN by interchange information, application server AS, media server MS, database server DB and door managing web server Portal form.This MRBT platform is the newly-increased network element in the system, and major function is: when caller MSC Server/MGW the multimedia color ring back tone call proceeding to the MRBT platform, the MRBT platform is responsible for carrying out Signalling exchange with caller and called MSC Server/MGW; MGW by caller is to calling subscriber's play multimedia CRBT; And by the MRBT platform caller and called MSC Server/MGW bridge joint are got up, finish caller and called between medium connect, realize the video calling between the caller and called users; Multi-media ringtone resource, user profile are stored, administered and maintained, service provider SP is managed; The service management and the customization operations of web mode are provided for system manager and user.Each functions of components is respectively in this MRBT platform:
Signaling access point SAN: realize the reception and the transmission of the BICC signaling between MRBT platform and caller, the called MSC Server, give AS after SAN changes signaling and handle, finish continuing of speech channel;
Database server DB:, be used to store user's business datum and multi-media ringtone resource data as the core database of MRBT platform; And can only visit this database by database access interface;
Application server AS: all resources of control and management MRBT platform, message is carried out Real-time and Concurrent handle, carry out the Multimedia Ring Back Tone service logic, by the action of Session Initiation Protocol control media server MS, safeguard communication interface with other functional entity;
Media server MS: accept the control of AS, audio frequency, video and other media resource carried out relevant treatment (as the conversion of literary composition language, layering, adaptive etc.), by MGW to user's play multimedia bell sound media resource:
Door managing web server Portal: the access approach of the web mode of MRBT platform is provided, is used for the management of system manager's realization to system, user and service provider SP, the user realizes professional customization, the management of bell sound resource.
This multimedia color ring back tone platform is supported following agreement at least:
Call control protocol: ISDN User Part, Bearer Independent Call Control Protocol, Session Initiation Protocol etc.;
Medium control protocol agreement: H.248/Megaco agreement, Session Initiation Protocol, MGCP agreement etc.;
Media processing protocol: RTP/RTCP agreement, RTSP agreement etc.;
Media format protocol: G.711, G.723.1, G.729AB wait the speech coding form and H.261, H.263, video code model such as MPEG4.
In addition, the function of the original network element in the said system and the technological transformation that need carry out are described as follows:
Attaching position register HLR is a database of being responsible for mobile subscriber's management, the storage user's that administers all subscription data and mobile subscriber's positional information.The present invention will carry out following transformation to called HLR: increase the multimedia color ring back tone sign (SS_code) of expression called subscriber for the multimedia color ring back tone user.
Mobile terminal SoftSwitch MSC Server by Mc interface control MGW, and provides calling control and mobile management function by the access control of Iu-CS interface realization to 3G RNS; Termination user-network signal, processing mobile subscriber's business datum.One or several local networks that wireless access network covered that MSC Server inserts are called the reciprocal exchange of business area under one's jurisdiction of this MSC Server.
The media gateway device MGW of end office (EO) is responsible for realizing media conversion under the control of the MSC Server of this MGW ownership, and carrying control and media processing capacity is provided.Possess built-in SGW SG, when supporting the MSC Server intercommunication of other time division multiplexing tdm network element and this MGW ownership based on the SS7 signal switching of signaling transmission SIGTRAN mode.User's face by inserting Iu-CS interface is linked into 3G core net circuit domain (R4 soft exchanging network) with user's face Media Stream of 3G RAN, and user's face that also can be by inserting the A interface is linked into the R4 soft exchanging network with user's face Media Stream of 2G BSS.The local network that the wireless access network that MGW inserts covers is called the professional area under one's jurisdiction of this MGW.
In the system of the present invention, carry out following technological transformation to the MSC Server/MGW of caller: multimedia color ring back tone sign SS_code among the SRI ACK that caller MSC Server/MGW can issue according to HLR, with the MRBT platform of call proceeding to called ownership; When caller MSC Server/MGW breathed out the multimedia color ring back tone platform, called number should be: route prefix+called MS ISDN+ called MS RN.
Referring to Fig. 1, introduce the implementation method of Multimedia Ring Back Tone service of the present invention, it is to identify SS_code for the multimedia color ring back tone user increases multimedia color ring back tone in the HLR of called ownership, and caller MSCServer/MGW calls out multimedia color ring back tone on the multimedia color ring back tone platform that is routed to called ownership according to the multimedia color ring back tone sign; This multimedia color ring back tone platform is responsible for to caller play multimedia CRBT; Behind the called off-hook, caller of multimedia color ring back tone platform bridges and called MSC Server/MGW realize the video calling between the calling and called; The multimedia color ring back tone platform is realized accurate billing by sending special BICC ACM signaling and ANM signaling to caller MSC Server/MGW to caller.
Referring to Fig. 1 and Fig. 3, specifically introduce the operating procedure of the implementation method of Multimedia Ring Back Tone service of the present invention:
(1) after the calling subscriber called out and to have customized Multimedia Ring Back Tone service called, caller MSCServer/MGW obtained called MSRN and multimedia color ring back tone sign SS_code from called HLR; (referring to the step 1 among Fig. 3～4).
(2) caller MSC Server/MGW sends BICC IAM signaling to the MRBT of called ownership platform, and wherein called number is filled out and is route prefix+called MS RN+ called MS ISDN; (referring to the step 5) among Fig. 3.
(3) the MRBT platform of called ownership judges that this calling is the Multimedia Ring Back Tone service calling, remove parameters such as route prefix in the IAM signaling of receiving, called MS ISDN, preceding commentaries on classics number of times, then IAM message is routed to the MSC Server/MGW of called ownership, wherein called number is filled out and is called MS RN; (referring to the step 6) among Fig. 3.
(4) called MS C Server/MGW finds the called subscriber, and after learning the called free time, returns the APM signaling of BICC to the MRBT platform of called ownership; After the MRBT of called ownership platform was received this signaling, loopback APM gave caller MSC Server/MGW; MRBT carries out the Nb interface initialization procedure with caller and called MGW respectively; After the called MS C Server/MGW loopback MRBT platform ACM signaling, the MRPT platform is to the special ACM signaling of caller MSC Server/MGW loopback one; MRBT platform and calling terminal carry out H.245 protocol handshake, and broadcast the multimedia color ring back tone of called custom-made according to the logical relation of numbers of calling and called parties to calling UE, suppress the local bell sound that produces of calling terminal; (referring to the step 7 among Fig. 3～22).
In this step, in the special ACM that the originating switch SoftSwitch sends, use " optional back is to calling out expression language parameter " to identify special multimedia color ring back tone at the multimedia color ring back tone platform and call out, promptly select for use to be the domestic some extension bits that keep of using in " optional back is to calling out expression language parameter ": the sign position that call out as multimedia color ring back tone as this calling of expression E position or F position or G position or H position; Like this, after the originating switch switch received this ACM, its handling process was adjusted into: whether after the originating switch switch is received the ACM signaling, judging in the signaling earlier has " optional back is to calling out expression language parameter ",, then handle by the normal call flow process if do not have; If have, judge then whether the sign position of the multimedia color ring back tone calling of this parameter is the numerical value that the expression multimedia color ring back tone is called out; If then handle according to following order: putting call identification is that MRBT calls out, sends the Alerting signaling, sends the Connect signaling to calling terminal to calling terminal; If not, then handle by the normal call flow process.
(5) when called press video calling mode off-hook after, after the MRBT platform receives the ANM that called MS CServer/MGW sends, stopping multimedia color ring back tone playing, and the special ANM of loopback caller MSCServer/MGW one, logical channel is opened in H.245 negotiations process between foundation and the called UE, enters talking state, speech channel Media Stream between " bridge joint " calling and called makes to begin video calling between the calling and called; (referring to the step 23 among Fig. 3～29)
In this step, in the special ANM that the originating switch SoftSwitch sends, use " optional back is to calling out expression language parameter " to identify special multimedia color ring back tone at the multimedia color ring back tone platform and call out, promptly select for use to be the domestic some extension bits that keep of using in " optional back is to calling out expression language parameter ": the sign position that call out as multimedia color ring back tone as this calling of expression E position or F position or G position or H position; After the originating switch SoftSwitch received this response message ANM, its handling process was adjusted into: after the originating switch SoftSwitch is received the ANM signaling, judge according to the sign position that multimedia color ring back tone is called out whether current calling is that MRBT calls out; If not, then handle by the normal call flow process; If then handle: suppress to send the Connect signaling, begin to charge for caller to calling terminal according to following order.
The H.245 protocol handshake negotiations process of carrying out between the MRBT platform of above-mentioned steps (4) and (5) and the calling and called terminal further comprise following operating procedure: if user terminal is supported the WNSRP standard, then adopt the WNSRP standard to quicken H.245 negotiations process; If the calling and called terminal is not supported the WNSRP standard, then carry out following processing operation: the timer numerical value in each stage in dwindling H.245; Many H.245 negotiation message be assembled into a message bag and send, to accelerate negotiations process.
(6) video calling finishes, and the MRBT platform is removed the H.245 logical channel between the calling and called, discharges relevant bearer.(referring to the step 30 among Fig. 3～32).
Referring to Fig. 3, introduce the detailed signaling process of calling out between two 3G subscriptions of applying for Multimedia Ring Back Tone service:
1, step 1～step 2: video call is initiated in caller, and the MSC Server/MGW of caller handles calling;
2, step 3～step 4: the MSC Server/MGW of caller obtains called MSRN and multimedia color ring back tone sign to the HLR of called ownership inquiry;
3, step 5: the MSC Server/MGW of caller sends the IAM signaling to the MRBT of called ownership platform, and called number is filled out and is route prefix+called MS RN+ called MS ISDN;
4, step 6: the MRBT platform of called ownership judges that this calling is the Multimedia Ring Back Tone service calling, removes the route prefix of roaming number, removes parameters such as former called MSISDN, preceding commentaries on classics number of times, and IAM message is routed to called MSC Server/MGW;
5, step 7～step 10: after called MSC Server/MGW finds terminal called, return APM for the MRBT platform of called ownership; When the MRBT of called ownership platform was received this signal, loopback APM gave caller MSC Server/MGW;
6, step 11～step 12:MRBT and called MGW carry out the Nb interface initialization procedure;
7, the MGW of step 13～step 14:MRBT and caller carries out the Nb interface initialization procedure;
8, step 15～step 18: called loopback ring signaling, the MRBT platform of called MSC Server/MGW by called ownership is after special ACM signaling of the MSC of caller Server/MGW loopback, and the MSC Server/MGW of caller sends the ring signaling to caller;
9, step 19～step 20: the MSC Server/MGW of caller is connected with calling terminal;
10, step 21～step 22: H.245 the MRBT platform and the calling terminal of called ownership shake hands, and according to the multimedia color ring back tone of called number to calling terminal broadcast called custom-made, suppress the local bell sound that produces of calling terminal;
11, step 23～step 25: the called video calling mode off-hook of pressing, called MSC Server/MGW sends ANM to the MRBT of called ownership platform;
12, step 26～step 29: the MRBT platform of called ownership stops the broadcast of multimedia color ring back tone, and logical channel is opened in the H.245 negotiations process between foundation and the terminal called, enters talking state.Simultaneously, the ANM that the MSC Server/MGW of loopback caller one is special, speech channel Media Stream between MRBT platform " bridge joint " calling and called of called ownership begins video calling between the calling and called;
13, step 30～step 32: end of conversation, the MRBT platform of called ownership is removed the H.245 logical channel between the calling and called, and relevant bearer discharges, and flow process finishes.
Charging problem and solution that the inventive method produced.From above-mentioned flow process as can be seen, at Calling Side, come the play multimedia CRBT owing to taken the talking path of caller, the Calling Side exchange opportunity adds up the duration and the calling and called duration of call of play multimedia CRBT, obtains the duration of call of caller.From user's impression, the duration of call should only be the calling and called duration of call, and the duration of play multimedia CRBT should not calculate within total duration.At this Calling Side charging deviation situation, the invention provides following technical solution:
(1) multimedia color ring back tone that uses " optional back is to calling out expression language parameter " to identify business of the present invention in the ACM that the multimedia color ring back tone platform sends is called out.Because E position, F position, G position, H position in " optional back is to calling out expression language parameter " parameter are left domestic use, and these four be used in all using at home as yet at present, and it is feasible therefore selecting a certain position in these four to do expansion.Concrete extended method is: select a certain the sign position as multimedia color ring back tone in above-mentioned four, if this sign position is 1, represent that this calling is that multimedia color ring back tone is called out; If 0, be expressed as normal calling.
(2) after the originating switch switch received ACM, handling process was adjusted into: after the originating switch switch is received the ACM signaling, judge in the signaling whether " optional back is to calling out expression language parameter " is arranged.If do not have, then handle by the normal call flow process; If have, judge again then whether the sign position of the multimedia color ring back tone of this parameter is 1; If this parameter is 0, then handle by the normal call flow process; If parameter is 1, then expression is that multimedia color ring back tone is called out, and do following processing this moment: putting call identification is that MRBT calls out, sends the Alerting signaling, sends the Connect signaling to calling terminal to calling terminal.
(3) after the originating switch switch received ANM, handling process was adjusted into: after the originating switch switch is received the ANM signaling, judge whether current call identification position is that MRBT calls out.If not, then handle by the normal call flow process; If then handle: suppress to send the Connect signaling, begin to charge for caller to calling terminal according to following steps.
The present invention has built pilot system, and has carried out test and implemented.MRBT platform in the pilot system is made up of network elements such as signaling access point SAN, application server AS, media server MS, database server DB and portal site server Portal, and each network element device can be disposed flexibly and adjust according to professional consumption.Each network element hardware is made up of high-performance computer/server and some Industrial Control Computers and all kinds of resource integrated circuit board.Each network element entity in the system links to each other by network, adopts the tcp/ip communication agreement, and network using 100M high-speed local area network also can adopt the active and standby dual network scheme of using.
The multimedia color ring back tone platform in the system test and the implementation method of Multimedia Ring Back Tone service are by following test: test is passed through in the associating IMS laboratory at HP and Intel, with the IMS operational trials that China Mobile's tissue has been crossed by NORTEL mutual group Netcom, test by each side is strict in the graduate TD-SCDMA of China Putian's information technology laboratory.The result of these tests is successful, has realized goal of the invention.
Claims (11)
1, a kind of system of realization Multimedia Ring Back Tone service of the WCDMA R4 mobile radio communication based on 3G comprises the core network element of WCDMA R4 mobile network: the mobile SoftSwitch MSC Server of end office (EO), end office's media gateway MGW and attaching position register HLR; It is characterized in that:
Described system also comprises the multimedia color ring back tone MRBT platform that a signaling access point SAN by interchange information, application server AS, media server MS, database server DB and door managing web server Portal are formed, the function of this MRBT platform is: when caller MSC Server/MGW the multimedia color ring back tone call proceeding to the MRBT platform, the MRBT platform is responsible for carrying out Signalling exchange with caller and called MSCServer/MGW; MGW by caller is to calling subscriber's play multimedia CRBT; And by the MRBT platform caller and called MSC Server/MGW bridge joint are got up, finish caller and called between medium connect, realize the video calling between the caller and called users; Multi-media ringtone resource, user profile are stored, administered and maintained, service provider SP is managed; The service management and the customization operations of web mode are provided for system manager and user.
2, the system of realization Multimedia Ring Back Tone service according to claim 1 is characterized in that: the function of each physical components is respectively in the described multimedia color ring back tone MRBT platform:
Signaling access point SAN: realize independently calling out with carrying between MRBT platform and caller, the called MSC Server reception and the transmission of control BICC signaling, give application server AS after SAN changes signaling and handle, finish continuing of speech channel;
Database server DB:, be used to store user's business datum and multi-media ringtone resource data as the core database of MRBT platform; And can only visit this database by database access interface;
Application server AS: all resources of control and management MRBT platform, message is carried out Real-time and Concurrent to be handled, carry out the Multimedia Ring Back Tone service logic,, safeguard communication interface with other functional entity by the action of initial session Session Initiation Protocol control media server MS;
Media server MS: accept the control of AS, audio frequency, video and other media resource comprised literary composition language conversion, layering and adaptive various processing, by MGW to user's play multimedia bell sound media resource;
Door managing web server Portal: the access approach of the web mode of MRBT platform is provided, is used for the management of system manager's realization to system, user and service provider SP, the user realizes professional customization, the management of bell sound resource.
3, the system of realization Multimedia Ring Back Tone service according to claim 1 is characterized in that: described multimedia color ring back tone platform is supported following agreement at least: the call control protocol that comprises ISDN User Part, Bearer Independent Call Control Protocol, Session Initiation Protocol: comprise the H.248/Megaco medium control protocol of agreement, Session Initiation Protocol, MGCP agreement: the media processing protocol that comprises RTP/RTCP agreement, RTSP agreement; Comprise G.711, G.723.1, G.729AB the speech coding form and H.261, H.263, the various media format protocol of MPEG4 video code model.
4, the system of realization Multimedia Ring Back Tone service according to claim 1, it is characterized in that: the attaching position register HLR in the described system is a database of being responsible for mobile subscriber's management, user's all subscription data and mobile subscriber's positional information are administered in storage to some extent, need increase following function:
Increase the multimedia color ring back tone sign SS_code of expression called subscriber for the multimedia color ring back tone user.
5, the system of realization Multimedia Ring Back Tone service according to claim 1 is characterized in that: the MSC Server/MGW of the caller in the described system will increase following function:
Caller MSC Server/MGW can confirm multimedia color ring back tone sign SS_code in the SRI_ACK message according to the transmission routing iinformation that HLR issues, with the MRBT platform of call proceeding to called ownership;
When caller MSC Server/MGW breathed out the multimedia color ring back tone platform, called number should be: route prefix+called Mobile Subscriber International ISDN number MSISDN+ called roaming number MSRN.
6, a kind of method of realization Multimedia Ring Back Tone service of the WCDMA R4 mobile radio communication based on 3G, it is characterized in that: for the multimedia color ring back tone user increases multimedia color ring back tone sign SS_code, caller MSC Server/MGW calls out multimedia color ring back tone on the multimedia color ring back tone platform that is routed to called ownership according to the multimedia color ring back tone sign in called HLR; By the multimedia color ring back tone platform to caller play multimedia CRBT; Behind the called off-hook, caller of multimedia color ring back tone platform bridges and called MSC Server/MGW realize the video calling between the calling and called; The multimedia color ring back tone platform is realized accurate billing by sending special Address Complete Message ACM signaling and response message ANM signaling among the BICC to caller MSC Server/MGW to caller.
7, the method for realization Multimedia Ring Back Tone service according to claim 6 is characterized in that, comprises the following steps:
(1) after the calling subscriber called out and to have customized Multimedia Ring Back Tone service called, caller MSCServer/MGW obtained called Mobile Station Roaming Number MSRN and multimedia color ring back tone sign SS_code from called HLR;
(2) caller MSC Server/MGW sends the initial address message IAM signaling of BICC to the MRBT of called ownership platform, and wherein called number is filled out and is the Mobile Subscriber International ISDN number MSISDN that route prefix+called roaming number MSRN+ is called;
(3) the MRBT platform of called ownership judges that this calling is the Multimedia Ring Back Tone service calling, remove route prefix, called MS ISDN, preceding commentaries on classics number of times parameter in the IAM signaling of receiving, then IAM message is routed to the MSC Server/MGW of called ownership, wherein called number is filled out and is called MS RN;
(4) called MS C Server/MGW finds the called subscriber, and after learning the called free time, returns the application transport mechanism APM signaling of BICC to the MRBT platform of called ownership; After the MRBT of called ownership platform was received this signaling, loopback APM gave caller MSC Server/MGW; MRBT carries out the Nb interface initialization procedure with caller and called MGW respectively; After the called MS C Server/MGW loopback MRBT platform Address Complete Message ACM signaling, the MRPT platform is to the special ACM signaling of caller MSC Server/MGW loopback one; H.245 MRBT platform and calling terminal carry out protocol handshake consults, and broadcasts the multimedia color ring back tone of called custom-made according to the logical relation of numbers of calling and called parties to calling UE, suppresses the local bell sound that produces of calling terminal;
(5) when called press video calling mode off-hook after, after the MRBT platform receives the response message ANM signaling that called MS CServer/MGW sends, stop the play multimedia CRBT, and the special ANM signaling of loopback caller MSC Server/MGW one, H.245 protocol negotiation process between foundation and the terminal called is opened logical channel, enters talking state, speech channel Media Stream between " bridge joint " calling and called makes to begin video calling between the calling and called;
(6) video calling finishes, and the MRBT platform is removed the H.245 logical channel between the calling and called, discharges relevant bearer.
8, the method for realization Multimedia Ring Back Tone service according to claim 7, it is characterized in that: in the described step (4), the MRPT platform is to use " optional back is to calling out expression language parameter " to come the identification of multimedia CRBT to call out in ACM to one of caller MSC Server/MGW loopback special Address Complete Message ACM signaling, promptly selects for use to be the domestic some extension bits that keep of using in " optional back is to calling out expression language parameter ": the sign position that call out as multimedia color ring back tone as this calling of expression E position or F position or G position or H position;
After caller MSC Server received this ACM, its handling process was adjusted into: whether after caller MSC Server receives this ACM signaling, judging in the signaling earlier has " optional back is to calling out expression language parameter ",, then handle by the normal call flow process if do not have; If have, judge then whether the sign position of the multimedia color ring back tone calling of this parameter is the numerical value that the expression multimedia color ring back tone is called out; If then handle according to following order: putting call identification is that MRBT calls out, sends ring Alerting signaling, sends connection Connect signaling to calling terminal to calling terminal; If not, then handle by the normal call flow process.
9, the method for realization Multimedia Ring Back Tone service according to claim 7, it is characterized in that: in the described step (5), the MRPT platform uses " optional back is to calling out expression language parameter " to come the identification of multimedia CRBT to call out in the special response message ANM that caller MSC Server/MGW sends, and promptly selects for use to be the domestic some extension bits that keep of using in " optional back is to calling out expression language parameter ": the sign position that call out as multimedia color ring back tone as this calling of expression E position or F position or G position or H position;
After caller MSC Server received this ANM, its handling process was adjusted into: after caller MSC Server receives this ANM signaling, judge according to the sign position that multimedia color ring back tone is called out whether current calling is that MRBT calls out; If not, then handle by the normal call flow process; If, then suppress to send the Connect signaling to calling terminal, begin to charge for caller.
10, according to Claim 8 or the method for 9 described realization Multimedia Ring Back Tone services, it is characterized in that: the concrete extended method of the sign position that the multimedia color ring back tone that keeps in described " optional back is to calling out expression language parameter " is called out is: in ACM and ANM signaling, E position or F position or G position or H position are promptly selected in the sign position of selecting same position to call out as multimedia color ring back tone; And the setting identification position is 1, represents that this calling is that multimedia color ring back tone is called out; The sign position is 0, is expressed as normal call.
11, the method for realization Multimedia Ring Back Tone service according to claim 7, it is characterized in that: the H.245 protocol negotiation process of carrying out between the MRBT platform of described step (4) and (5) and the calling and called terminal further comprises following operating procedure: if user terminal is supported window formula numbering host-host protocol WNSRP standard simply again, then adopt WNSRP standard acceleration negotiations process H.245; If the calling and called terminal is not supported the WNSRP standard, then carry out following processing operation: the timer numerical value in each stage in dwindling H.245; Many H.245 negotiation message be assembled into a message bag and send, to accelerate negotiations process.
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