CN101119337B - Method for implementing color bell service interaction of PSTN user and IMS user - Google Patents
Method for implementing color bell service interaction of PSTN user and IMS user Download PDFInfo
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Abstract
The present inventiondiscloses a method for completing the CRBT intercommunication of the PSTN user and the IMS user. The method contains the following steps: the PSTN user calls and sends the message which has the user information of the call party and the called party to the MGCF; the MGCF calls the IMS user and sends the call request information of the MGCF media to the core network; the core network calls the IMS user and builds the connection with the CRBT server after judging that the IMS user has ordered the CRBT; the CRBT server triggers the CRBT and executes the media negotiation process of the MGCF and the media server and the IMS user; and then the PSTN user listens to the played RBT. With the invention, the PSTN user can listen to the RBT ordered by the called party when calls the IMS user, thereby satisfying practical demand of the user and providing better service to the user.
Description
Technical field
The present invention relates to value-added telecom services, particularly a kind of method that realizes PSTN user and IMS user's color bell service interaction.
Background technology
IMS (IP Multimedia System) is one and is based upon on SIP (conversation initialized protocol) basis, merged data, voice and mobile network's system, it is the real time business on present UMTS (universal mobile telecommunications system) packet-switched domain, it with IP flexibly professional ability be planted among the mobile communication system, greatly enriched the mobile service generative capacity.
Ring Back Tone service constantly develops, and in the IMS territory that is now just developing rapidly good application is arranged also, that is Multimedia Ring Back Tone service.As the called subscriber of calling signing Multimedia Ring Back Tone service, the multimedia color ring back tone of called setting can be seen or hear to caller, and multimedia color ring back tone can be a video, also can be audio frequency.
In present stage, CS (legacy circuit-switched) the territory network that comprises PSTN temporarily can't substitute, therefore and between the IMS territory realize that with MGCF (media gateway controlling server) conversion of signaling is with mutual, make IMS territory and the CS territory user can intercommunication, but the calling subscriber who is in the PSTN territory but can't listen to and be in the CRBT that IMS territory called subscriber signs, and can not satisfy user's real needs.
Summary of the invention
The objective of the invention is to propose the method for a kind of PSTN of realization user and IMS user's color bell service interaction, in order to overcome calling subscriber who is in the PSTN territory at present and the problem that is in the CRBT that to listen to called subscriber's signing when IMS territory called subscriber communicates.
In order to realize the foregoing invention purpose, the present invention specifically is achieved in that
The method of a kind of PSTN of realization user and IMS user's color bell service interaction comprises:
Steps A, PSTN user makes a call, and sends the message that has calling and called user profile to MGCF;
Step B, MGCF makes a call to IMS user, and the call request message that sends the medium have MGCF is to core net;
Step C, core net call IMS user judges IMS user and signs Ring Back Tone service, and foundation is connected with server of color ring back tone service;
Step D, server of color ring back tone service triggers Ring Back Tone service, carries out MGCF and media server and IMS user's media negotiating process;
Step e, PSTN user listens to the CRBT of broadcast.
In the method for described realization PSTN user and IMS user's color bell service interaction, described step C further comprises:
Step C1, core net sends the call request message of the medium have MGCF to IMS user, through the media negotiation of IMS user and MGCF, IMS user return have consult medium 183 message to core net;
Step C2, core net judges that according to CAMEL-Subscription-Information IMS user signs Ring Back Tone service, sends call request message to the server of color ring back tone service that has the Ring Back Tone service access code and connects.
In the method for described realization PSTN user and IMS user's color bell service interaction, described step D further comprises:
Step D1, server of color ring back tone service send call request message to media server, begin to carry out media negotiation;
Step D2, media server deliver to MGCF after returning 183 message process server of color ring back tone service and core net;
Step D3, through with the media negotiation of media server, MGCF sends and is sent to media server after the PRACK message that has the medium that MGCF and media server consult is passed through core net and server of color ring back tone service;
Step D4, media server is responded the PRACK message of MGCF through server of color ring back tone service and core net;
Step D5, MGCF sends the medium that message request is upgraded media server and IMS user;
Step D6, IMS user and MGCF carry out the transmission of ring and reply, and finish media negotiation.
Connect among the described step D2 of above-mentioned scheme, media server returns in 183 message of server of color ring back tone service and 183 message that server of color ring back tone service returns to core net, has the medium of media server;
Core net returns in 183 message of MGCF, has MGCF and the medium of IMS user's negotiation and the medium of the media server that indicates into early-session.
Connect above-mentioned scheme, among the described step D3, MGCF suppresses the video media in the medium with the negotiating media of media server the time, only keeps audio frequency media and carries out media negotiation.
Connect above-mentioned scheme, among the described step D4, core net should obtain IMS user earlier and reply at the PRACK message of its transmission before the PRACK message that MGCF is sent is replied.
Connect above-mentioned scheme, among the described step D5,
The medium that described MGCF sends message request renewal media server further comprise:
(1) core net sends the updating message that has medium to be updated and be transmitted to media server to server of color ring back tone service;
(2) media server is more behind the new media, will have through server of color ring back tone service and respond receiveing the response of medium and deliver to core net, and media server is responded the call request that core net sends automatically then;
The medium that described MGCF sends message request renewal IMS user further comprise:
(3) core net sends and has the updating message of medium to be updated to IMS user;
(4) IMS user is more behind the new media, will have to respond receiveing the response of medium and deliver to core net;
Described core net will have receiveing the response of medium of response and deliver to MGCF.
Connect above-mentioned scheme, described step D6 further comprises:
(1) IMS user sends 180 message to MGCF through core net;
(2) MGCF sends PRACK message to IMS user through core net;
(3) IMS user's process core net is to the response of MGCF transmission to PRACK message.
In the method for described realization PSTN user and IMS user's color bell service interaction, described step e further comprises:
Step e 1, MGCF sends a message to PSTN user;
Step e 2, core net send the request of coloring ring back tone playing to server of color ring back tone service;
Step e 3, the message that server of color ring back tone service will have the media file path sends to media server;
Step e 4, media server begins coloring ring back tone playing according to the result and the media file path of media negotiation, and PSTN user listens to CRBT, and media server is replied the request of the coloring ring back tone playing of core net transmission through server of color ring back tone service.
The method of described realization PSTN user and IMS user's color bell service interaction also comprises the steps:
The calling that IMS user answer core net sends;
Core net sends a message to the server of color ring back tone service request and stops coloring ring back tone playing and call release;
Media server is received the request that server of color ring back tone service is transmitted, and stops coloring ring back tone playing, call release, and will receive the response and behind server of color ring back tone service, deliver to core net;
MGCF sends a message to PSTN user after receiving the IMS user's that core net is transmitted response message.
Adopt the inventive method, can listen to the CRBT that the called subscriber signs when making the customer call that is in the PSTN territory be in the user in IMS territory, by this method, can satisfy user's real needs, for the user provides better service.
Description of drawings
Fig. 1 is the structural representation of the system of realization the inventive method.
Fig. 2 is the schematic flow sheet of the inventive method.
Embodiment
When the present invention made PSTN customer call IMS color ring user, the calling subscriber can hear the multimedia color ring back tone that this color ring user is set, and mainly may further comprise the steps:
Steps A, the calling subscriber makes a call;
Step B, according to number analysis, this call proceeding is made a call to the called subscriber by MGCF, and is routed to core net to MGCF;
Step C, core net is judged the called subscriber and has been signed Ring Back Tone service, and when the called subscriber made a call, foundation was connected with server of color ring back tone service;
Step D, server of color ring back tone service triggers Ring Back Tone service, carries out the CRBT media negotiating process;
Step e, the calling subscriber listens to the multimedia color ring back tone of broadcast.
Described step B further comprises:
B1, MGCF receive ISUP signaling IAM message;
B2, MGCF makes a call to the IMS territory, and sends SIP signaling INVITE to core net.
Described step D further comprises:
D1, server of color ring back tone service triggers Ring Back Tone service according to the Ring Back Tone service access code;
D2 carries out the CRBT media negotiating process of media server and MGCF;
Described step e further comprises:
E1, the media negotiating process of media server and MGCF finishes;
E2, MGCF send ISUP signaling ACM to caller;
E3, media server begins coloring ring back tone playing, and the calling subscriber listens to CRBT.
Below in conjunction with the drawings and specific embodiments the inventive method is elaborated.
As shown in Figure 1, the system of realization the inventive method comprises with the lower part:
Multimedia ring service system: comprise server of color ring back tone service, CRBT WEB server, CRBT interface message processor (IMP), NFS (media server).
Server of color ring back tone service: finish the service logic control of IMS territory Ring Back Tone service, finish the preservation and the inquiry of business datum, finish control to media server, also need to provide the interface with CRBT WEB server, with the custom-modification that allows operator or terminal use that the business datum of server of color ring back tone service is authorized.
CRBT WEB server: multimedia ring service system provides operator or user's interface in the WEB mode, mainly the person of being in charge of to polyphonic service data carry out custom-modification, CRBT file is uploaded, and responsible color ring user carries out the preview CRBT, operation such as orders, is provided with.
CRBT interface message processor (IMP): comprise that mainly CRBT core interface machine, CRBT file upload parts such as interface message processor (IMP) and short message interface machine.The audition that CRBT core interface machine carries out the user, operation such as order, be provided with and send to server of color ring back tone service and handle, CRBT file is uploaded interface message processor (IMP) will send to media server by the CRBT file that WEB uploads, and the short message interface machine is with color ring systems access short message center.
Media server: finish and server of color ring back tone service control Signalling exchange, finish according to the broadcast of preassigned pattern to audio/video file, its NFS that has finishes the storage to the multimedia color ring back tone resource file of uploading.
UE: calling/called terminal: wherein, UE_A is a PSTN territory calling terminal, and UE_B is an IMS territory terminal called.
AS: equipment of the core network mainly comprises HSS (home subscriber server), PSS (fixed network analog service), CSCF (call session control).HSS is responsible for preserving IMS user's CAMEL-Subscription-Information, comprises data such as basic identification, routing iinformation; PSS is responsible for the core control logic of IMS system; CSCF is responsible for the basic session routing function, and AS_B is called AS.
MGW (media gateway): termination is carried out the conversion between these terminations from the Bearer Channel of CS network with from the Media Stream of IMS network.
MGCF: make the gateway that can communicate between IMS user and the CS user, be responsible for calling out the protocol conversion of control flows, and be responsible for the media channel of control MGW.
The detailed process of the inventive method as shown in Figure 2 is as follows:
Step 21:UE_A initiates the calling to UE_B, and the switch under the UE_A sends ISUP signaling IAM message to MGCF according to number analysis, has calling/called information in the message.
Step 22:MGCF distributes the media channel of a MGW according to the calling/called information in the IAM message, and initiates the IMS territory and call out, and sends INVITE to AS_B, wherein has the medium sdpA of MGCF.
Step 23:AS_B sends INVITE to UE_B, wherein has the medium sdpA of MGCF.
Step 24: through the media negotiation of UE_B and MGCF, UE_B returns 183 message, wherein with the medium sdpBA that consults.
Step 25:AS_B inquires about CAMEL-Subscription-Information, finds that B has signed Multimedia Ring Back Tone service, sends INVITE to server of color ring back tone service, and foundation is connected with server of color ring back tone service, has the Ring Back Tone service access code in the message.
Step 26: trigger Multimedia Ring Back Tone service on the server of color ring back tone service, to the CRBT media file that needs to play, concurrent INVITE is given media server, begins to carry out media negotiation at data base querying.
Step 27: media server returns 183 message and gives server of color ring back tone service, wherein has the medium sdpC of media server.
Step 28: server of color ring back tone service sends 183 message to AS_B, wherein has the medium sdpC of media server.
Step 29:AS_B sends 183 message to MGCF, carries UE_B medium sdpBA that consulted and the media server medium sdpC that indicates into early-session in this message.
Step 210: through with the media negotiation of sdpC, MGCF sends PRACK message to AS_B, has to consult medium sdpAC.
MGCF is with the negotiating media of sdpC the time, if the CRBT that color ring user is signed is a video frequency color ring, MGCF suppresses video media, only carries out the negotiation of audio frequency media.
Step 211:AS_B sends PRACK message to server of color ring back tone service, has in the message to consult medium sdpAC.
Step 212: server of color ring back tone service is given media server with the PRACK forwards, has in the message to consult medium sdpAC.
Step 213: media server returns 200 OK message (to the response of PRACK message) and gives server of color ring back tone service, and the media negotiation result has been received in expression.
Step 214: server of color ring back tone service is transmitted 200 OK message (to the response of PRACK message) and is given AS_B.
Step 215:AS_B sends PRACK message to UE_B.
Step 216:UE_B returns 200 OK message (to the response of PRACK message) and gives AS_B.
Step 217:AS_B sends 200 OK message (to the response of PRACK message) and gives MGCF.
Step 218:MGCF sends UPDATE message to AS_B, has carried medium sdpAB and sdpAC ' and (early-session) has been used to upgrade media server and called subscriber's medium.
Step 219:AS_B sends UPDATE message to server of color ring back tone service, has carried medium sdpAC ' in the message body and has been used for more new media.
Step 220: server of color ring back tone service is given media server with the UPDATE forwards, has carried medium sdpAC ' in the message body.
Step 221: media server, returns 200 OK (to the response of UPDATE message) and gives server of color ring back tone service more behind the new media according to sdpAC ', has carried response medium sdpCA ' in the message body.
Step 222: server of color ring back tone service is transmitted to AS_B with 200 OK (to the response of UPDATE message), has carried response medium sdpCA ' in the message body.
Step 223: because media negotiation finishes, media server returns 200 OK message (to the response of INVITE) and gives server of color ring back tone service.
Step 224: server of color ring back tone service is transmitted to AS_B with 200 OK message (to the response of INVITE).
Step 225:AS_B receives 200 OK message (to the response of INVITE), sends the ACK acknowledge message to server of color ring back tone service.
Step 226: server of color ring back tone service is transmitted to media server with the ACK acknowledge message.
Step 227:AS_B sends UPDATE message to UE_B, has carried medium sdpAB ' in the message body and has been used for more new media.
Step 228:UE_B, returns 200 OK message (to the response of UPDATE message) and gives AS_B more behind the new media according to sdpAB ', has carried response medium sdpBA ' in the message body.
Step 229:AS_B sends 200 OK message (to the response of UPDATE message) and gives MGCF, has carried response medium sdpBA ' and sdpCA ' in the message body (early-session).
Step 230-231:UE_B sends 180 message to MGCF, and through AS_B, UE_B begins ring.
Step 232-233:MGCF sends PRACK message to UE_B, through AS_B.
Step 234-235:UE_B sends 200 OK message (to the response of PRACK message) and gives MGCF, through AS_B.
Step 236: media consultation process finishes, and MGCF sends ISUP signaling ACM message to UE_A, shows the called free time, prepares the coloring ring back tone playing sound.
Step 237:AS_B sends INFO to server of color ring back tone service, the request coloring ring back tone playing.
Step 238: server of color ring back tone service sends INFO to media server, wherein has the media file path.
Step 239: media server begins playing media according to media negotiation result and media file path, and the calling subscriber begins to listen to CRBT, and media server also returns 200 OK message (to the response of INFO) and gives server of color ring back tone service.
Step 240: server of color ring back tone service returns 200 OK message (to the response of INFO) and gives AS_B.
Step 241:UE_B replys, and sends out 200 OK message (to the response of INVITE) to AS_B.
Step 242:AS_B sends BYE message to server of color ring back tone service, requires to stop coloring ring back tone playing and call release.
Step 243: server of color ring back tone service is given media server with the BYE forwards.
Step 244: media server stops playing media, and polyphonic ringtone playing finishes; Call release, and return 200 OK message (to the response of BYE message) and give server of color ring back tone service.
Step 245: server of color ring back tone service is transmitted 200 OK message (to the response of BYE message) and is given AS_B.
Step 246:AS_B transmits 200 OK message (to the response of INVITE) to MGCF.
Step 247:MGCF receives 200 OK message, sends ISUP signaling ANM to UE_A.
So far, UE_A and UE_B begin conversation.
Claims (7)
1. method that realizes common exchanging telephone network PSTN user and IP Multimedia System IMS user color bell service interaction is characterized in that comprising:
Steps A, PSTN user makes a call, and sends the message that has calling and called user profile to Media Gateway Controller;
Step B, Media Gateway Controller makes a call to IMS user, and the call request message that sends the medium have Media Gateway Controller is to core net;
Step C, core net call IMS user judges IMS user and signs Ring Back Tone service, and foundation is connected with server of color ring back tone service;
Step D, server of color ring back tone service triggers Ring Back Tone service, carries out Media Gateway Controller and media server and IMS user's media negotiating process, and described step D further comprises:
Step D1, server of color ring back tone service send call request message to media server, begin to carry out media negotiation;
Step D2, media server is delivered to Media Gateway Controller after returning 183 message process server of color ring back tone service and core net, among the described step D2, media server returns in 183 message of server of color ring back tone service and 183 message that server of color ring back tone service returns to core net, has the medium of media server;
Core net returns in 183 message of Media Gateway Controller, has Media Gateway Controller and the medium of IMS user's negotiation and the medium of the media server that indicates into early-session;
Step D3, through with the media negotiation of media server, Media Gateway Controller sends and is sent to media server after the PRACK message that has the medium that Media Gateway Controller and media server consult is passed through core net and server of color ring back tone service;
Step D4, media server is responded the PRACK message of Media Gateway Controller through server of color ring back tone service and core net;
Step D5, Media Gateway Controller sends the medium that message request is upgraded media server and IMS user;
Step D6, IMS user and Media Gateway Controller carry out the transmission of ring and reply, and finish media negotiation;
Step e, PSTN user listens to the CRBT of broadcast;
This method also comprises the steps:
The calling that IMS user answer core net sends;
Core net sends a message to the server of color ring back tone service request and stops coloring ring back tone playing and call release;
Media server is received the request that server of color ring back tone service is transmitted, and stops coloring ring back tone playing, call release, and will receive the response and behind server of color ring back tone service, deliver to core net;
Media Gateway Controller sends a message to PSTN user after receiving the IMS user's that core net is transmitted response message.
2. the method for realization PSTN user as claimed in claim 1 and IMS user's color bell service interaction is characterized in that described step C further comprises:
Step C1, core net sends the call request message of the medium have Media Gateway Controller to IMS user, through the media negotiation of IMS user and Media Gateway Controller, IMS user return have consult medium 183 message to core net;
Step C2, core net judges that according to CAMEL-Subscription-Information IMS user signs Ring Back Tone service, sends call request message to the server of color ring back tone service that has the Ring Back Tone service access code and connects.
3. the method for realization PSTN user as claimed in claim 1 and IMS user's color bell service interaction is characterized in that,
Among the described step D3, Media Gateway Controller suppresses the video media in the medium with the negotiating media of media server the time, only keeps audio frequency media and carries out media negotiation.
4. the method for realization PSTN user as claimed in claim 1 and IMS user's color bell service interaction is characterized in that,
Among the described step D4, core net should obtain IMS user earlier and reply at the PRACK message of its transmission before the PRACK message that Media Gateway Controller is sent is replied.
5. the method for realization PSTN user as claimed in claim 1 and IMS user's color bell service interaction is characterized in that, among the described step D5,
The medium that described Media Gateway Controller sends message request renewal media server further comprise:
(1) core net sends the updating message that has medium to be updated and be transmitted to media server to server of color ring back tone service;
(2) media server is more behind the new media, will have through server of color ring back tone service and respond receiveing the response of medium and deliver to core net, and media server is responded the call request that core net sends automatically then;
The medium that described Media Gateway Controller sends message request renewal IMS user further comprise:
(3) core net sends and has the updating message of medium to be updated to IMS user;
(4) IMS user is more behind the new media, will have to respond receiveing the response of medium and deliver to core net;
Described core net will have receiveing the response of medium of response and deliver to Media Gateway Controller.
6. the method for realization PSTN user as claimed in claim 1 and IMS user's color bell service interaction is characterized in that described step D6 further comprises:
(1) IMS user sends 180 message to Media Gateway Controller through core net;
(2) Media Gateway Controller sends PRACK message to IMS user through core net;
(3) IMS user's process core net is to the response of Media Gateway Controller transmission to PRACK message.
7. the method for realization PSTN user as claimed in claim 1 and IMS user's color bell service interaction is characterized in that described step e further comprises:
Step e 1, Media Gateway Controller sends a message to PSTN user;
Step e 2, core net send the request of coloring ring back tone playing to server of color ring back tone service;
Step e 3, the message that server of color ring back tone service will have the media file path sends to media server;
Step e 4, media server begins coloring ring back tone playing according to the result and the media file path of media negotiation, and PSTN user listens to CRBT, and media server is replied the request of the coloring ring back tone playing of core net transmission through server of color ring back tone service.
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| CN101931902B (en) * | 2009-06-26 | 2014-06-11 | 中兴通讯股份有限公司 | Service implementation method and system of IP multimedia subsystem network |
| CN101610479A (en) * | 2009-07-15 | 2009-12-23 | 中兴通讯股份有限公司 | The Ring Back Tone service management method and the system that are used for IP Multimedia System |
| CN102056110B (en) * | 2009-11-06 | 2013-04-17 | 中国移动通信集团公司 | Method, system and device for 2-generation (2G) communication system and IP multimedia subsystem (IMS) communication system to share ring back tone service |
| CN103781030B (en) * | 2012-10-23 | 2017-04-05 | 北京凯华网联技术有限公司 | IP-based color bell business implementation method and CRBT media server |
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