WO2011032425A1

WO2011032425A1 - Method and system for implementing differentiated ringing in call waiting service

Info

Publication number: WO2011032425A1
Application number: PCT/CN2010/075323
Authority: WO
Inventors: 唐飞; 王立波; 杨强
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-09-15
Filing date: 2010-07-20
Publication date: 2011-03-24
Also published as: CN102026108A

Abstract

The present invention discloses a method for implementing differentiated ringing in call waiting service, which includes: after a calling user terminal (UE) sends an INVITE message to an application server (AS), the AS concludes that the called user is provided with differentiated ringing and call waiting services, then generates the corresponding call waiting differentiated ringing tone information according to the calling user information, and the call waiting differentiated ringing tone information is carried in the INVITE message and sent to the called UE; if the called user is on calling, the called UE provides the called user with the call waiting tone corresponding to the call waiting differentiated ringing tone information sent by the AS. The present invention also correspondingly discloses a system for implementing differentiated ringing in call waiting service. The present invention can implement differentiated ringing in call waiting service, and the related information of the call waiting user is acquired by the called user to improve user experience.

Description

Method and system for realizing different ringing in call waiting service

The present invention relates to a network interconnection protocol (IP) multimedia subsystem in the field of communications, and in particular to a method and system for implementing distinctive ringing in a call waiting service of an IP multimedia subsystem. Background technique

IP Multimedia Core Network Subsystem (IMS) is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3GPP), which builds an open and flexible business environment. , support multimedia applications, and provide users with rich multimedia services.

IMS is an IP-based telecommunications network architecture, which is independent of the access technology. In addition to providing services for packet access networks such as General Packet Radio Service (GPRS) and Wireless Local Area Network (WLAN), It can also provide services for mobile cellular networks such as Global System for Mobile communications (GSM) and Universal Mobile Telecommunications System (UMTS).

In the IMS service system, the control layer is separated from the service layer. The service triggering and control functions in the control layer are implemented by the Call Session Control Function (CSCF). The CSCF is divided into a proxy (Proxy) and a query. Interrogation and Serving are three types; the business layer is composed of a series of Application Servers (ASs), which can provide specific business services. The AS can be an independent entity or can exist in the service call session control function. In the Serving Call Session Control Function (S-CSCF), the S-CSCF controls the service trigger according to the user subscription information, invokes the service on the AS, and implements the service function. AS and S-CSCF can be collectively referred to as Server Equipment (SE). In addition, in the conversation An end-to-end device is called a User Equipment (UE) and is responsible for interacting with the user. These functional entities communicate using the SIP (Session Initiation Protocol) protocol.

1 is a schematic diagram of an IMS network architecture according to the prior art. As shown in FIG. 1, an IMS network architecture according to the prior art generally includes: a home subscriber server (HSS), a CSCF, an AS, and an access gateway control function (Access Gateway Control). Function, AGCF) and user equipment

UE1, UE2 UEn.

2 is a schematic diagram of a basic process of three UE calls in an existing IMS system. For simplicity, it is assumed that there is only one AS between three UEs, and the related CSCF unit is omitted. As shown in FIG. 2, during UE1 and UE2 calls, UE3 When initiating a call to UE1, the basic call procedure is as follows: Step 201: UE3 picks up the phone and initiates a call to the AS.

Step 202: The AS sends an invite (INVITE) message to UE1.

The INVITE message carries the ringing information ( alert-info ) to distinguish the ringing unit.

Step 203: Since UE1 is currently talking to UE2, the call waiting process is started, at which time the user listens to the call waiting tone and responds to the AS.

Step 204: The AS sends a 180 response to the UE3, and the subsequent steps 205 to 208 are the same as the existing call flow, that is, the UE3 sends a PRACK message to the AS, and the AS sends a PRACK message to the UE1. After the UE1 responds to the AS with a 200 OK response, the AS sends the UE3 to the UE3. Back to 200 OK response.

In summary, the prior art can implement the call waiting service, but the following defects exist: Since only the distinctive ringing implementation of the ordinary call is defined in the IMS related standard, the specific ringing mode is carried by the alert-info information element, but The process of implementing the distinctive ringing of the call waiting process is not defined. Therefore, the IMS cannot implement the distinctive ringing service in the scenario, so that the called user cannot obtain related information of the call waiting user in the call waiting scenario, thereby affecting the user experience. Summary of the invention

In view of this, the main purpose of the present invention is to provide a method and system for implementing distinctive ringing in a call waiting service, which enables a called user to obtain information about a user waiting for a call, Improve the user experience.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A method for implementing distinctive ringing in a call waiting service, including:

After the calling user terminal sends the invite INVITE message to the application server AS, the AS determines that the called user has the distinctive ringing and call waiting service, and generates the corresponding call waiting distinctive ringing tone information according to the calling user information, and carries the information through the INVITE message. And sending the call waiting difference ringing tone information to the called user terminal;

When the called user is in the call, the called user terminal provides the called waiting tone corresponding to the call waiting area ringing tone information sent by the AS to the called user.

The AS carries the call waiting difference ringing tone information by using the INVITE message to: the AS carries the call waiting difference ringing tone information through the SIP header field or the SIP message body in the INVITE message.

The method further includes: determining, by the network element associated with the called user, whether the called user is in a call, and generating a corresponding call waiting tone according to the call waiting for the ringing tone information sent by the AS, and providing the called call to the called user. .

The network element associated with the called user is the called user terminal or the access gateway control function AGCF. An implementation system for distinguishing ringing in a call waiting service, comprising: a calling user terminal, a called user terminal, and an AS;

The calling user terminal is configured to send an INVITE message to the AS when the call is initiated;

The AS is configured to determine, after receiving the INVITE message sent by the calling user terminal, whether the called user has a distinctive ringing and call waiting service, and when the called user has a distinctive ringing and call waiting service, according to the main Calling the user information to generate a corresponding call waiting difference ringing tone information, and carrying and transmitting the call waiting difference ringing tone information to the called user terminal by using the INVITE message;

The called user terminal is configured to send a call sent by the AS when the called user is in a call. The call waiting tone corresponding to the difference ringing tone information is supplied to the called user terminal.

The AS carries the call waiting difference ringing tone information through the INVITE message: The AS carries the call waiting difference ringing tone information through the SIP header field or the SIP message body in the INVITE message.

The system also includes AGCF,

The AS is further configured to carry and send a call waiting difference ringing tone information to the AGCF through the INVITE message;

The AGCF is configured to determine whether the called user is in a call, and generate a corresponding call waiting tone according to the call waiting difference ringing tone information sent by the AS, and provide the called call waiting tone to the called user terminal.

The called user terminal is further configured to determine whether the called user is in a call, and generate a corresponding call waiting tone according to the call waiting difference ringing tone information sent by the AS.

The method and system for implementing the distinctive ringing in the call waiting service of the present invention, the AS carries and sends the call waiting for the ringing tone information to the called user terminal through the INVITE message, and the called user terminal sends the call waiting difference ringing tone sent by the AS The call waiting tone corresponding to the information is provided to the called user. Therefore, the present invention can implement the distinctive ringing in the call waiting service, so that the called user can obtain relevant information of the user waiting for the call to improve the user experience. DRAWINGS

1 is a schematic diagram of an IMS network architecture according to the prior art;

2 is a schematic diagram of a basic process of three UE calls in an existing IMS system;

3 is a schematic flowchart of a method for implementing a distinctive ringing in a call waiting service according to the present invention; FIG. 4 is a schematic flowchart of a method for implementing a distinctive ringing in a call waiting service according to Embodiment 1; Schematic diagram of the implementation method flow. detailed description

The basic idea of the present invention is: AS carries and sends a call waiting difference through an INVITE message The ringing tone information is sent to the called user terminal, and the called user terminal provides the call waiting tone corresponding to the call waiting difference ringing tone information delivered by the AS to the called user.

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.

3 is a schematic flowchart of a method for implementing distinctive ringing in a call waiting service according to the present invention. As shown in FIG. 3, the method for implementing distinctive ringing in the call waiting service of the present invention generally includes the following steps: Step 301: The calling user terminal sends an INVITE Message to AS.

Step 302: The AS determines that the called user has differentiated ringing and call waiting services, and generates corresponding call waiting distinctive ringing tone information according to the calling user information.

Step 303: The AS carries and sends the corresponding call waiting difference ringing tone information to the called user terminal by using the INVITE message.

Specifically, the AS may carry the call waiting difference ringing tone information through the SIP header field or the SIP message body in the INVITE message.

Step 304: The called user is in the call, and the called user terminal provides the call waiting tone corresponding to the call waiting difference ringing tone information sent by the AS to the called user.

Here, the network element associated with the called user terminal or the called user may determine whether the called user is in a call, and generate a corresponding call waiting tone according to the call waiting difference ringing tone information sent by the AS, and then provide the corresponding call waiting tone. The called user. It should be noted that the network element associated with the called user includes an entity such as a user equipment and an access gateway control function (AGCF).

The present invention also provides an implementation system for distinguishing ringing in a call waiting service, including: a calling user terminal, a called user terminal, and an AS;

a calling user terminal, configured to send an INVITE message to the AS when the call is initiated;

The AS is configured to: after receiving the INVITE message sent by the calling user terminal, determine whether the called user has a distinctive ringing and call waiting service, and when the called user has a distinctive ringing and call waiting service, according to the calling user The information generates a corresponding call waiting difference ringing tone information, and carries and sends the corresponding call waiting difference ringing tone information to the called party through the INVITE message. User terminal

The called user terminal is configured to provide the called waiting tone corresponding to the call ringing difference ringing tone information sent by the AS to the called user when the called user is in the call.

The system also includes AGCF,

The AGCF is configured to determine whether the called user is in a call, and generate a corresponding call waiting tone according to the call waiting difference ringing tone information sent by the AS, and provide the call waiting tone to the called user.

Example 1

In this embodiment, three user equipments UE1, UE2, and UE3 in the IMS domain are involved, where UE1 and UE2 are in a call, and UE3 initiates a call to UE1. There is only one AS between the three user equipments, and the related CSCF unit is omitted. instead.

4 is a schematic flowchart of a method for implementing distinctive ringing in a call waiting service according to Embodiment 1. As shown in FIG. 4, the method for implementing distinctive ringing in the call waiting service of Embodiment 1 includes the following steps: Step 401: UE3 picks up the phone and initiates a call. Go to AS.

Step 402: The AS sends an INVITE message to UE1.

The INVITE message carries call waiting distinctive ringing information, such as call waiting information (call-waiting-info).

Step 403: UE1 is currently in a call with UE2, and UE1 uses the call waiting to distinguish the ringing information, puts the corresponding call waiting tone to the user, and responds to the AS.

Step 404: The AS returns a 180 response to the UE3. Steps 405 to 408 are the same as the existing call flow. Example 2

In this embodiment, three user equipments UE1, UE2, and UE3 in the IMS domain are involved, where UE1 and UE2 are in a call, and UE3 initiates a call to UE1, and UE1 needs to interact with the AS through the AGCF.

5 is a schematic flowchart of a method for implementing a distinctive ringing in a call waiting service according to Embodiment 2. As shown in FIG. 5, the method for implementing distinctive ringing in the call waiting service of Embodiment 2 includes the following steps: Step 501: UE3 picks up the phone and initiates a call. Go to AS.

Step 502: The AS sends an INVITE message to the AGCF.

The INVITE message carries call waiting distinctive ringing information, such as call-waiting-info. Step 503: The AGCF determines that the UE1 is in a call, and its service needs to be implemented by the AGCF, and the AGCF converts the call waiting distinctive ringing information into a corresponding message and sends the message to the UE1.

Step 504: The AGCF responds to the AS 180.

Step 505: The AS returns a 180 response to the UE3.

Step 506~Step 509 is the same as the existing call flow.

According to the basic principle of the present invention, the call waiting distinctive ringing information can be carried by the SIP INVITE message, such as in the SIP message header field or the message body.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A method for implementing distinctive ringing in a call waiting service, characterized in that the method comprises:

When the called user is in a call, the called user terminal provides the call waiting tone corresponding to the ringing tone information sent by the AS to the called user.

The method for implementing the distinctive ringing in the call waiting service according to claim 1, wherein the AS carries the call waiting distinctive ringing tone information through the INVITE message: the AS passes the SIP header in the INVITE message. The domain or SIP message body carries the call waiting difference ringing tone information.

The method for implementing the distinctive ringing in the call waiting service according to claim 1, wherein the method further comprises: determining, by the network element associated with the called user, whether the called user is in a call, and according to The call waiting differentiated ringing tone information sent by the AS generates a corresponding call waiting tone and is provided to the called user.

The method for implementing the distinctive ringing in the call waiting service according to claim 3, wherein the network element associated with the called user is a called user terminal or an access gateway control function AGCF.

A system for implementing a distinctive ringing in a call waiting service, the system comprising: a calling user terminal, a called user terminal, and an AS;

The AS is configured to determine, after receiving the INVITE message sent by the calling user terminal, the called party Whether the user has a distinctive ringing and call waiting service, and when the called user has a distinctive ringing and call waiting service, generates a corresponding call waiting distinctive ringing tone information according to the calling user information, and carries and transmits the message through the INVITE message. Said call waiting for different ringing tone information to the called user terminal;

The called user terminal is configured to provide, when the called user is in a call, the call waiting tone corresponding to the call waiting difference ringing tone information sent by the AS to the called user terminal.

The system for implementing the distinctive ringing in the call waiting service according to claim 5, wherein the AS carries the call waiting difference ringing tone information through the INVITE message: the AS passes the SIP header field in the INVITE message or The SIP message body carries the call waiting difference ringing tone information.

7. The system for implementing distinctive ringing in a call waiting service according to claim 5, wherein the system further comprises an AGCF.

8. The system for implementing distinctive ringing in a call waiting service according to claim 5, wherein the system is characterized in that: