WO2008017189A1

WO2008017189A1 - System and method for realizing colorful ring back tone service in 3g ip multimedia subsystem network

Info

Publication number: WO2008017189A1
Application number: PCT/CN2006/001732
Authority: WO
Inventors: Haijun Liu
Original assignee: Zte Corporation
Priority date: 2006-07-18
Filing date: 2006-07-18
Publication date: 2008-02-14
Also published as: CN101491070A

Abstract

A system and a method for realizing colorful ring back tone(RBT) service in 3G IMS network, the system includes: a media server(102), for storing colorful RBT media resource or is connected with the storage space at which the colorful RBT media resource is stored, and for playing the colorful RBT media resource; and a service application server(104), for sending the control information to the media server(102) based on the state information of the called terminal, so as to control the media server(102) to play the colorful RBT media resource. Based on above system and method, the colorful RBT service can be realized in 3G IMS network, so that the user on the new network, such as the 3G IMS network, can use the colorful RBT service, and furthermore the content of the colorful RBT is more abundant than that in the 2G network.

Description

In the 3G IP Multimedia Subsystem Network

TECHNICAL FIELD The present invention relates to a communication value-added service technology, and more particularly to a system and method for implementing a CRBT service in a third-generation communication IP multimedia subsystem (hereinafter referred to as a 3G IMS) network. BACKGROUND OF THE INVENTION At present, when constructing new networks and investing in new technologies, telecom operators are increasingly paying attention to attracting users by developing new services and satisfying user demands, thereby achieving profit growth. The CRBT service (personalized ring back tone service) has been well developed in the telecommunications market due to its distinctive features and significant enhancement of the auditory experience. Currently, in narrowband networks such as GSM, CDMA, PHS, and fixed telephone networks, more mature commercial devices have been used to provide CRBT services.

As a new type of network, the 3G IMS network provides new technologies for implementing services. On the 3G IMS network, text, pictures, sound and other media can be transmitted, which is the cornerstone of the CRBT service that is different from the 2G network. Therefore, there is a need for a system and method for implementing a ring back tone service on a 3G IMS network to meet new user requirements and to provide new functions for the user. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a system and method for implementing a CRBT service in a 3G IMS network, using new technologies to meet user requirements, and providing new functions for users to use. In order to achieve the above object, according to an aspect of the present invention, a system for implementing a CRBT service in a 3G IMS network is provided. The system includes a media server, configured to store a color ring tone media resource or connected to a storage space in which the color ring tone media resource is stored, and used to store the color ring tone media resource; and a service application server having state information according to the called terminal An intelligent network service module that sends control information to the media server, configured to control playback of the color ring media resource by the media server. In addition, the system for implementing the CRBT service in the 3G IMS network according to the present invention may further include a call session control function module for providing a service, and configured to send the service trigger information to the service application server according to the user attribute information of the called terminal user. And indicating that the intelligent network service module of the service application server is connected to the called terminal. Preferably, the system according to the present invention may further include a home service user server, configured to provide user attribute information of the called terminal user, where the user attribute information includes a CRBT service filtering standard defined in the user service description set, and the call The session control function module determines whether to send the call message to the service application server according to the user attribute information in the home service user server. Further, in the system of the present invention, a call session control function module for providing a service is configured to transmit status information of the called terminal to the service application server. When the status information of the called terminal is ringing, the service application server instructs the media server to play the CRBT media resource, and when the status information of the called terminal is off-hook or fails to be connected, Instructing the media server to stop playing the CRBT media resource. In the system of the present invention, the interface between the media server and the business application server includes a session initial "office interface or media gateway control i" protocol interface. Business should The interface between the server and the call session control function module providing the service is a session initial protocol interface. According to another aspect of the present invention, a method for implementing a CRBT service in a 3G IMS network is provided, the method comprising the following steps: a) the call session control function module providing the service sets the status of the called terminal The information is sent to the service application server; and b) the service application server sends control information to the media server according to the received status information of the called terminal, and controls the media server to play the color ring media resource. Preferably, the method according to the present invention further comprises the following steps before the step: when the calling of the caller to the 3G IMS CRBT user arrives, the serving call session control function module sends the trigger information to the service application server according to the user attribute; The service application server, in response to the received trigger information, instructs the call session control function module that provides the service to connect to the called terminal. In step b) of the method of the present invention, the call session control function module providing the service sends a message to the service application server to report the status of the called terminal, and when the status information of the called terminal is ringing, The service application server instructs the media server to play the CRBT media resource. The service application server instructs the media server to play a session description in the CRBT media resource to use the session description of the calling party; and the service application server responds to the calling terminal The status information of the called terminal is ringing, and the session description uses the session description of the media server. When the called terminal changes, the serving call session control function module sends a message to the service application server to report the status of the called terminal, when the status information of the called terminal is off-hook or fails to be connected. The service application server instructs the media server to stop playing the CRBT media resource. When the status information of the called terminal is off-hook, the service application server instructs the call session control function module that provides the service to update to the media of the calling party. The body stream format, when the status information of the called terminal is that the call fails to be connected, the serving call session control function module releases the related resource according to the indication of the service application server. In addition, in the method of the present invention, it is preferable that the call session control function module that provides the service sends the CRBT service filtering standard defined in the user service description set in the home service user server to the service application server. Trigger information. Moreover, the CRBT service filtering criteria are defined in order before other services. In the method of the present invention, when the media server cannot play the CRBT media resource according to the instruction of the service application server, the service application server rings to the called terminal to respond to the called terminal. Message, where the session description uses the session description of the called terminal. Moreover, in step b) of the method of the present invention, when the status information of the called terminal received by the service application server indicates that the called terminal is not in an idle state, the service application server does not provide the media to the media. The server sends control information, and the status information of the called terminal is corresponding to the calling party. The non-idle state includes information that the called terminal is busy or not in the service area. Through the above system and method, the CRBT service on the 3G IMS network is realized, so that users on the new network of 3G IMS can also use the popular CRBT service, and the CRBT content is more abundant than the 2G network. The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawing: 1 is a schematic diagram of a system for implementing a CRBT service in a 3G IMS network according to an embodiment of the present invention; FIG. 2 is a flowchart of a method for implementing a CRBT service in a 3G IMS network according to an embodiment of the present invention; 3 is a flow chart of a method for implementing a CRBT service in a 3G IMS network according to another embodiment of the present invention; and FIG. 4 is a schematic diagram of a signaling flow according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention are described with reference to the accompanying drawings. In order to facilitate the understanding and explanation of the present invention, first, the abbreviations referred to in the specification and the drawings are explained and explained as follows.

3G: the 3rd Generation, 3rd generation (communication)

3GPP: the 3rd Generation Partnership Project, 3rd Generation (Communication) Partner Program

3GPP2: the 3rd Generation Partnership Project 2, 3rd Generation (Communication) Partner Program 2

IMS: IP Multimedia Subsystem, IP Multimedia Subsystem

AS: Application Server, Business Application Server

MS: Media Server, Media Server MGCP: Media Gateway Control Porotocol, Media Gateway Control Protocol

S-CSCF: Serving Call Session Control Function, providing call session control function for monthly service

HSS: Home Subscriber Server, Home Business User Server

P-CSCFProxy Call Session Control Function: Call session control function as a proxy

IP: Internet Protocol, Internet Ten

SIP: Session Initiation Protocol, initial session: 1⁄2 ten

RTP: A Tranport Protocol for Real-Time Applictions, real-time application transport protocol

RTCP: RTP Control Protocol, RTP Control Protocol

SDP: Session Description Protocol, Session Description Protocol

PS: Packet Switch, (data) packet exchange

RNS: Radio Network System, Wireless Network System

SS: Software Switch, Softswitch

INVITE SIP signaling: request to initiate a session

200 OK SH command: responds to the request message, indicating acceptance of the request

ACK SIP signaling: confirmation of the previous session transaction

183 ring SIP signaling: indicates that the session request is being processed. PRACK SIP signaling: message confirmation request for session establishment 180 ring SIP signaling: In this specification, the called ringing UPDATE SIP signaling is used: for updating the SDP. FIG. 1 is a 3G according to an embodiment of the present invention. Schematic diagram of a system for implementing a CRBT service on an IMS network. The device device of the system 100 for implementing the CRBT service in the 3G IMS network of the present invention and its connections are shown therein. In this embodiment of the present invention, the system 100 uses a Media Server (MS) 102 as a device for playing a CRBT media resource and storing a CRBT media resource. Alternatively, the color ring media resources may be stored using other storage spaces connected to the MS 102. The networking device includes an AS 104, an MS 102, an S-CSCF 106, an HSS 108, a P-CSCF 110, and an IP network 112. Various terminals supporting multimedia, for example, may be various telephone terminals, software terminals, and the like.

The connection between the AS 104 and the S-CSCF 106 is used to transmit CRBT service trigger information, indicate connection calls, etc. The protocol used for the connection is SIP. In the present invention, a set of intelligent network service software is loaded on the AS 104 device, and the set of service software controls the connection and play of the ring tones.

The interface between the AS 104 and the MS 102 is related to the vendor of the specific MS 102, typically an extended SIP interface protocol or an MGCP interface protocol, through which the AS 104 instructs the MS 102 to play the specified storage in the MS 102 or with the MS. 102 ringtone media files on the connected storage space.

The S-CSCF 106, the P-CSCF 110, the HSS 108, the PS-DOMAIN 114, and the RNS 116 are all 3G core switching network devices, and the IP network 112 is a 3G bearer network. The CRBT service has no special requirements for these devices and networks. The S-CSCF 106 provides a service control service for the user, maintains the state of a session, the HSS 108 stores data such as the user's Service Profile, and the S-CSCF 106 determines whether or not the 4 bar call message is based on the user attribute information in the HSS 108. Sent to AS 104. The interface between the S-CSCF 106 and the HSS 108 is the DIAMETER protocol for transmitting data such as the Service Profile to the S-CSCF 106.

The P-CSCF 110 is the first device to enter the IMS system from the PS-DOMAIN 114. It acts as a proxy: receiving messages sent by the terminal, forwarding messages to the S-CSCF 106, and the like. The PS-DOMAIN 114 includes various 3G packet switching devices, receives messages sent by the terminals through the RNS 116, and transmits and receives messages and media streams with the IMS in a packet format. 2 is a flow chart of a method for implementing a CRBT service on a 3G IMS network in accordance with the present invention. As shown in FIG. 2, in the method of the present invention, steps S210 and S220 are included. In step S210, the S-CSCF 106 module sends the status information of the called terminal to the AS 104. In step S220, the AS 104 sends control information to the MS 102 according to the received status information of the called terminal, and controls the MS. 102 Playback of CRBT media resources. In addition, before the step S210, when the call of the caller to the 3G IMS CRBT user arrives, the S-CSCF 106 sends the trigger information to the AS 104 according to the user attribute. And, in response to the received trigger information, the AS 104 triggers the service module logic on the AS 104 to instruct the S-CSCF 106 to connect to the called terminal. In the present invention, the service on the AS 104 is triggered by the S-CSCF 106 based on the Filter Criteria defined in the User Service Profile in the HSS 108: a message is sent to the AS 104, and the call is handed over. Give AS 104. 3 is a flow chart of a method for implementing a CRBT service on a 3G IMS network according to another embodiment of the present invention. As shown in FIG. 3, in this embodiment, a method for implementing a CRBT service on a 3G IMS network includes the following steps. Step S310, when the call to the 3G IMS CRBT user arrives via the P-CSCF 110, the S-CSCF 106 sends a message to the AS 104 in the user attribute. In step S320, the service module logic on the AS 104 is triggered to instruct the S-CSCF 106 to connect to the called terminal. Step S330, the S-CSCF 106 connects the called terminal (via the P-CSCF 110), and sends a message to the AS 104 to send the status information of the called party. In step S340, it is determined whether the status information of the called terminal is ringing. If yes, step S350 is performed, and if not, step S370 is performed. Step S350, the service module logic on the AS 104 sends a message to the MS 102, instructing the MS 102 to play the CRBT media resource (including audio, video, etc.), wherein the session description uses the session description of the calling party; the AS 104 is responded to the calling party. A ringing message is called, where the session description uses the session description of the MS 102. Step S360, the calling terminal receives the media played by the MS 102. After this step is completed, the caller hears the ring tone and/or sees the ring tones. Step S370, when the called off-hook answer or the call fails to be connected, the AS 104 instructs the MS 102 to stop playing the CRBT media and end playing the CRBT media. In step S370, if the called party answers, the AS 104 instructs the S-CSCF 106 to update to the calling party's media stream format (via the P-CSCF 110), the calling party is called; if the call fails to be connected, the AS 104 The business module logic ends and the S-CSCF 106 releases the relevant resources. In addition, in this embodiment, the service user may also define other Filter Criteria in the Service Profile, and the CRBT service Filter Criteria needs to be defined before other services in order. When the MS 102 is unable to play as directed by the AS 104, the AS 104 responds to the called party with a called ringing message, wherein the session description uses the called session description. In step S330, when the message received by the called terminal by the AS 104 indicates that the called party is not idle (such as busy, out of service area, etc.), the AS 104 does not send a message to the MS 102, and the message response returned by the called terminal of the bar is returned. Give the caller. 4 is a schematic diagram of a signaling flow when a CRBT service is provided for a 3G IMS network according to an embodiment of the present invention. As shown in Figure 4, the signaling process for providing CRBT services to a 3G IMS network is as follows:

1) The INVITE message of the called party (color ring back tone) sent by the calling party arrives at the S-CSCF 106 to which the called party belongs.

2) The S-CSCF 106 triggers the service and forwards the calling INVITE message to the AS.

104.

3) The CRBT service logic on the AS 104 is executed, and the CRBT service logic sends an INVITE message to the called user, which is sent by the S-CSCF 106 to the called terminal.

4) The called terminal responds to 183 a ringing message, which is sent by the S-CSCF 106 to the AS 104.

5) After the AS 104 4 arrives at the called 183 message, it sends a PRACK message to the called terminal according to the lOOrel header field in the 183 message. Steps 5), 6) depend on the header field 100rel in the message of the called response.

6) The called terminal responds to the PRACK (200 OK message). 7) The AS 104 sends an INVITE message to the MS 102 instructing the MS 102 to stream the media. Steps 7), 8), 9) There may be different parameters due to the MS 102 vendor, and additional SIP messages such as INFO are added.

8) The MS 102 responds with a 200 OK message.

9) AS 104 responds to MS 102 with an ACK message.

10) The AS 104 sends the called 183 message to the calling party via the S-CSCF 106.

11) The media session is started between the calling party and the MS 102, and the calling party hears the ring tones, or sees the multimedia ring tones.

12) The called party picks up the phone, and the called terminal returns a 200 OK message.

13) The AS 104 receives the 200 OK message and sends a BYE message to the MS 102 instructing the MS 102 to disconnect the media stream session with the calling party.

14) The MS 102 disconnects the media stream session with the calling party and responds to the AS 104 with a 200 OK message.

15) The AS 104 sends an UPDATE message to the calling party, and the 4 bar called SDP notifies the calling party.

16) The caller responds with a 200 OK message.

17) AS 10 sends the called 200 O message to the calling party via S-CSCF 106.

18) The caller responds with an ACK message.

19) The AS 104 sends the calling ACK message to the called terminal.

20) The calling party is called and the ring back tone service ends. The above embodiments are applicable to 3GPP IMS domain, 3GPP2 IMS domain, and also to other similar networks, such as other communication networks using SIP as signaling. Through the above system and method, the CRBT service on the 3G IMS network is realized, so that users on the new network of 3G IMS can also use the popular CRBT service, and the CRBT content is more abundant than the 2G network. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A system for implementing a CRBT service in a 3G IP multimedia subsystem network, comprising: a media server, configured to store a CRBT media resource or connected to a storage space in which the CRBT media resource is stored, and used for And playing the color ring media resource; and the service application server, having an intelligent network service module that sends control information to the media server according to the status information of the called terminal, and is used to control the media server to play the color ring media resource.

The system according to claim 1, further comprising: a call session control function module for providing a service, configured to send service trigger information to the service application server according to user attribute information of the called terminal user And connecting the called terminal according to the instruction of the intelligent network service module of the service application server.

The system according to claim 2, further comprising: a home service user server, configured to provide user attribute information of the called terminal user, where the user attribute information includes a color ring tone defined in a user service description set The service filtering standard, the call session control function module determines whether to send the call message to the service application server according to the user attribute information in the home service user server.

The system according to claim 2, wherein the service-provided call session control function module is configured to send status information of the called terminal to the service application server.

The system according to any one of claims 1 to 4, wherein, when the status information of the called terminal is ringing, the service application server instructs the media server to play the color ring tone medium. The resource, when the status information of the called terminal is off-hook or fails to be connected, instructing the media server to stop playing the CRBT media resource.

The system according to any one of claims 1 to 4, wherein the interface between the media server and the service application server comprises a session initial ten-party interface or a media gateway control protocol interface.

The system according to any one of claims 2 to 4, wherein the interface between the service application server and the call session control function module providing the service is a session initiation protocol interface.

A method for implementing a CRBT service in a 3G IP multimedia subsystem network, the method comprising the steps of: a) providing a service call session control function module to send status information of the called terminal to the service application server And the service application server sends control information to the media server according to the received status information of the called terminal, and controls the media server to play the color ring media resource.

9. The method according to claim 8, wherein before the step ia), the method further comprises the step of: providing a service call session when the call of the caller to the CRBT user arrives The control function module sends the trigger information to the service application server according to the user attribute; and the service application server, in response to the received trigger information, instructs the call session control function module that provides the service to connect to the called terminal.

10. The method according to claim 8, wherein in step b), the serving call session control function module sends a message to the service application server to report the status of the called terminal, when When the status information of the called terminal is ringing, the service application server instructs the media server to play the CRBT media resource.

The method according to claim 8, wherein in step b), when the called terminal changes, the serving call session control function module sends a message to the service application server to report the called terminal. The service application server instructs the media server to stop playing the CRBT media resource when the status information of the called terminal is off-hook or fails to be connected.

The method according to claim 10, wherein the service application server instructs the media server to play a session description in the CRBT media resource to use a session description of the calling party; and the service application server Responding to the calling terminal to respond to the status information of the called terminal as ringing, wherein the session description uses a session description of the media server.

The method according to claim 11, wherein, when the status information of the called terminal is off-hook, the service application server instructs the service-provided call session control function module to update to the main The called media stream format, when the status information of the called terminal is that the call fails to be connected, the call session control function module that provides the service releases the related resource according to the indication of the service application server.

The method according to claim 8, wherein the serving call session control function module sends the service to the service according to the CRBT service filtering standard defined in the user service description in the home service user server. The application server sends a trigger message.

15. The method of claim 14, wherein the CRBT traffic filtering criteria are defined in sequence prior to other services.

16. The method according to claim 10, wherein when the media server cannot insert/drop the CRBT media resource according to the indication of the service application server, the service application server The caller responds to the message that the called terminal rings, wherein the session description uses the session description of the called terminal.

The method according to claim 8, wherein in step b), the status information of the called terminal received by the service application server indicates that the called terminal is not idle. And the service application server does not send control information to the media server, and the status information of the called terminal is corresponding to the calling party.

18. The method of claim 17, wherein the non-idle state comprises information that the called terminal is busy or not in a service area.