WO2009046645A1 - Procédé pour la réalisation d'une interaction entre un service de transfert aveugle de conversation et un service de session - Google Patents

Procédé pour la réalisation d'une interaction entre un service de transfert aveugle de conversation et un service de session Download PDF

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Publication number
WO2009046645A1
WO2009046645A1 PCT/CN2008/071507 CN2008071507W WO2009046645A1 WO 2009046645 A1 WO2009046645 A1 WO 2009046645A1 CN 2008071507 W CN2008071507 W CN 2008071507W WO 2009046645 A1 WO2009046645 A1 WO 2009046645A1
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WO
WIPO (PCT)
Prior art keywords
service
conference
transfer
user equipment
session
Prior art date
Application number
PCT/CN2008/071507
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English (en)
Chinese (zh)
Inventor
Zhenhua Xie
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Publication of WO2009046645A1 publication Critical patent/WO2009046645A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1096—Supplementary features, e.g. call forwarding or call holding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1083—In-session procedures
    • H04L65/1093—In-session procedures by adding participants; by removing participants

Definitions

  • the present invention relates to multimedia services in the field of communications, and more particularly to session blind transfer services and conference services in an IP multimedia subsystem.
  • the IP (Internet Protocol) Multimedia Subsystem is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3GPP). An open and flexible business environment that supports multimedia applications and provides users with rich multimedia services.
  • the control layer and the service layer are separated.
  • the control layer does not provide specific services, and only provides the necessary triggering, routing, and accounting functions to the service layer.
  • the service triggering and control functions in the control layer are controlled by the Call Session Control Function (CSCF, Call Session Control Function; divided into Proxy Proxy, Interrogating and Serving Serving).
  • CSCF Call Session Control Function
  • the main responsibility is the Serving CSCF, ie S- CSCF; Interrogating type is optional) completed.
  • the business layer is composed of a series of application servers (AS, Application Server) that can provide specific business services.
  • the AS can be an independent entity or it can exist in the S-CSCF.
  • the control layer controls the service trigger according to the subscription information of the user, invokes the service on the AS, and implements the service function.
  • AS and S-CSCF can be collectively referred to as service equipment (SE, Server Equipment).
  • SE service equipment
  • Server Equipment The end-to-end device in the session is called User Equipment (UE) and is responsible for interacting with the user.
  • SIP Session Initiation Protocol
  • the session blind transfer service is a service in the IMS, which allows the user equipment to transfer the session to the transfer target device after the session is established, so that the transferred party no longer talks with the transfer party, and then transfers the target.
  • the conference service is also a service in IMS, which allows multiple people to talk at the same time, that is, one person can speak, and others can hear it.
  • the conference service SE manages all conference services on it, and each conference service is uniquely identified by the conference contact address. If the user equipment has opened the session blind transfer service, In the case of a conference service, there are interactions between the two services because they need to use the same message.
  • Figure 1 is a basic message flow diagram of the existing blind-switching service and conference service interaction. It is described that user equipment A (UE-A) has opened the blind-switching service, and UE-A and user equipment B (UE-B) are established. In the session, UE-A creates a conference service, and then invites UE-B to join the conference. The steps are as follows: Step 101: UE-A and UE-B have established a multimedia session, because UE-A has opened the blind transfer service. Therefore, the blindly switched service SE is on the path of the session signaling;
  • Step 102 UE-A creates a conference. Similarly, UE-A activates the blind transfer service, and the blind transfer service SE is also on the signaling path of the session, and the blind transfer service SE records the conference contact address and UE-A is Meeting creator;
  • Step 103 The UE-A requests to transfer the session of the UE-B to the conference, so that the UE-B joins the conference service, for example, the UE-A sends a handover (REFER) message to the UE-B to be transferred, and transfers the message.
  • REFER handover
  • the information in the Refer-To header field points to the transfer destination - the conference contact address;
  • Step 104 The blind-transfer service SE receives the transfer message sent by the UE-A to the UE-B, and considers that the blind transfer service is performed, and then changes the transfer destination to the address of the blind-transfer service SE, and forwards the modified transfer message to the UE. -B;
  • Step 105 UE-B receives the modified transfer message, indicating that the transfer is agreed, for example, responding to the "202 Accepted" message, and the response message passes through the blind transfer service SE;
  • Step 106 the blind transfer service SE forwards the response message to the UE-A;
  • Step 107 the UE-B first ends the session to be transferred, for example, sends a End Session (BYE) message to the UE-A, and ends the session message through the blind transfer service SE;
  • BYE End Session
  • Step 108 the blind transfer service SE forwards the end session message of the UE-B to the UE-A;
  • Step 109 The UE-B sends a call request to the transfer destination, that is, the blind transfer service SE according to the transfer message, for example, sending an invitation (INVITE) message;
  • Step 110 The blind transfer service SE receives the call request sent by the UE-B, and modifies the call target to the conference contact address, and then forwards the call request of the UE-B according to the address;
  • Step 111 Because the conference contact address is on the conference service SE, the conference service SE receives the call request forwarded by the blind transfer service SE, associates it with the specified conference service, and sends a response response message to the blind transfer service SE to respond. Call, such as responding to a "200 OK"message; Step 112: The response response message passes through the blind transfer service SE, and the blind transfer service SE forwards the response response to the UE-B to indicate the answering call;
  • Step 113 From then on, UE-B ends the original session and establishes a session with the conference service SE, thereby joining the conference service created by UE-A.
  • Step 201 UE-A sends a transfer message to UE-B, requesting UE-B to transfer its session to the conference contact address. , the transfer message passes through the blind transfer service SE;
  • Step 202 After the blind transfer service SE modifies the transfer destination to itself, the UE forwards the transfer message sent by the UE-A to the UE-B.
  • Step 203 The UE-B receives the transfer message forwarded by the blind transfer service SE, and sends a call request to the call transfer target, the blind transfer service SE.
  • Step 204 The blind transfer service SE receives the call request sent by the UE-B, and then modifies the transfer destination to the conference contact address, and then forwards the call request to the real transfer destination according to the address (stored on the conference service SE).
  • the blind transfer service SE treats the transfer message belonging to the conference service as a request for the blind transfer service, so that the subsequent UE-B call request unnecessarily passes through the blind transfer service SE, and the signaling is added.
  • the path and unnecessary transfer target modification operations also increase the unnecessary blind transfer service overhead of UE-A.
  • the technical problem to be solved by the present invention is to provide a method for realizing the interaction between the session blind transfer service and the conference service, thereby saving the signaling path.
  • the present invention provides a method for implementing a session blind transfer service and a conference service interaction, which is applied to an IP multimedia subsystem, and the user equipment A in the conference service activates a blind transfer service, when the user equipment A Determining that the creator of the conference service is the user equipment A, and the requesting transfer destination is the conference service, when sending a request to the user equipment B that has a session connection to transfer the session to the conference service Meeting contact address, keep the request The requested transfer destination is unchanged, and the request is forwarded to the user equipment B, otherwise the blind transfer service logic is executed.
  • the conference contact address may be recorded by the blind transfer service device. Further, the creator of the conference service may be marked by the blind transfer service service device. Further, the user equipment A may access the blind connection service device, establish the session connection with the user equipment B, and send the request to the user equipment B.
  • the request may include a transfer message.
  • the requested transfer destination may be indicated by information in a Refer-To header field of the transfer message.
  • the blind transfer service device may determine whether the creator of the conference service is the user equipment A, and if yes, further determine whether the requested transfer destination is a conference contact address of the conference service, and if yes, maintain The requested transfer destination is unchanged, and the request is forwarded to the user equipment B, otherwise the blind transfer service logic is executed.
  • the blind transfer service device determines that the creator of the conference service is not the user device A, the blind transfer service logic may be executed.
  • the blind transfer service service device keeps the transfer target unchanged, and after forwarding the request to the user device B, the method may further include the following steps:
  • the user equipment B sends a response message to the user equipment A to indicate that the transfer is agreed to;
  • the user equipment B passes the blind transfer service device, and sends a end session message to the user equipment A to end the session;
  • the user equipment B sends a call request to the conference service service device according to the transfer destination to join the conference;
  • the user equipment B establishes a session with the conference service service device to join the conference service. Further, the conference contact address may be saved on the conference service service device. According to the method provided by the present invention, since the blind transfer service device directly forwards the request to the transferred party by confirming that the transfer destination is the conference contact address provided by the conference creator that sends the request, the call request of the subsequent transferred party is made. It does not need to go through the blindly switched service service equipment, which not only reduces the signaling path and redundant operations, but also reduces the unnecessary blind transfer service overhead of the transfer party.
  • FIG. 1 is a basic message flow chart of an existing blind transfer service and a conference service interaction
  • Figure 2 is a schematic flow chart for abstracting Figure 1;
  • 3 is a basic message flow chart of the blind transfer service and the conference service interaction according to the present invention.
  • Fig. 4 is a schematic flow chart for abstracting Fig. 3.
  • the method for realizing the interaction between the session blind transfer service and the conference service provided by the present invention is as follows: User equipment A (UE-A) in the conference service is opened for the blind transfer service, and the blind transfer service SE records the conference for the conference service. Contact address, and mark the creator of the conference service (either UE-A, or other user equipment); when UE-A requests other user equipment B (UE-B) to transfer the session with its session connection,
  • the blind-transfer service SE determines whether the UE-A is the conference service creator. If yes, it further determines whether the transfer destination is the conference contact address created by the UE-A, and the address of the transfer destination remains unchanged, and directly forwards to the UE-B. Request; otherwise perform blind turn business logic.
  • FIG. 3 is a basic message flow diagram of the present invention for implementing the interaction between the blind transfer service and the conference service, and the UE-A establishes a blind transfer service, and establishes a session with the UE-B, and then the UE-A creates the conference service.
  • the process of inviting UE-B to join the conference service is as follows:
  • Steps 301 to 303 are the same as steps 101 to 103 of the basic message flow shown in FIG. 1.
  • Step 304 The blind-transfer service SE receives the transfer message sent by the UE-A to the UE-B, and first determines the UE-A that sends the transfer message. Whether it is the conference service creator, if not, it is performed according to the blind transfer service; if yes, it is further determined whether the transfer destination is the conference contact address determined by the UE-A, and if not, the blind transfer service is not performed and the address of the transfer destination remains unchanged. If not, perform a blind transfer business;
  • Step 305 The blind-transfer service SE forwards the transfer message sent by the UE-A to the UE-B.
  • Step 306 which is the same as step 105 of the basic message flow shown in FIG. 1;
  • Step 307 which is the same as step 106 of the basic message flow shown in FIG. 1;
  • Step 308 which is the same as step 107 of the basic message flow shown in FIG. 1;
  • Step 309 which is the same as step 108 of the basic message flow shown in FIG. 1;
  • Step 310 UE-B according to the transfer destination of the transfer message - the conference contact address
  • the SE initiates a call request to join the conference service
  • Step 311 Because the conference contact address is on the conference service SE, the conference service SE receives the call request sent by the UE-B, associates the call request with the designated conference service, and answers the call request, for example, responding to "200 OK" Message
  • Step 312 From then on, UE-B ends the original session and establishes a session with the conference service SE, thereby joining the conference service created by UE-A.
  • FIG. 4 is a schematic flow chart for the abstraction of the flow in Figure 3, the steps are as follows:
  • Step 401 UE-A requests UE-B to transfer its session to the conference contact address, and the request passes through the blind transfer service SE;
  • Step 402 The blind transfer service SE determines that the request is proposed by the conference service creator, and the transfer destination of the request is a conference contact address created by the conference service creator, and the blind transfer service logic is not executed, and the request is directly forwarded to the request.
  • UE-B The blind transfer service SE determines that the request is proposed by the conference service creator, and the transfer destination of the request is a conference contact address created by the conference service creator, and the blind transfer service logic is not executed, and the request is directly forwarded to the request.
  • Step 403 The UE-B receives the request, and sends a call request to the call transfer destination, the conference contact address (stored on the conference service SE).
  • the advantages of the present invention over the prior art can be clearly seen from the basic message flow diagram of the method of the present invention shown in Figure 3 and the summary flow chart shown in Figure 4.
  • the invention judges the transfer message of the user through the blind transfer service SE, and directly determines whether it is performing the conference service or the blind transfer service, thereby effectively implementing the interaction of the two services, reducing the unnecessary signaling path and Excess business operations, thus providing users with better services.

Abstract

L'invention concerne un procédé pour la réalisation d'une interaction entre un service de transfert aveugle de conversation et un service de session, appliquée dans un sous-système multimédia IP pour sauvegarder la route de signalisation. Selon le procédé, l'UE A du service de session réduit le service de transfert aveugle. Lorsque ledit UE A transmet la demande de transfert de ladite conversation audit service de session à l'UE B ayant une connexion de session avec l'UE A, si le créateur dudit service de session est jugé comme étant ledit UE A, et ledit objet de transfert demandé est jugé comme étant l'adresse de contact de la session dudit service de session, ledit objet de transfert demandé est maintenu et ladite demande est transférée audit UE B, sinon la logique du service de transfert aveugle est effectuée. Le procédé de cette invention réduit la route de signalisation et l'opération redondante, tout en réduisant la charge de service de transfert aveugle du côté réalisant le transfert.
PCT/CN2008/071507 2007-10-12 2008-07-01 Procédé pour la réalisation d'une interaction entre un service de transfert aveugle de conversation et un service de session WO2009046645A1 (fr)

Applications Claiming Priority (2)

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CN200710182244.6 2007-10-12
CN 200710182244 CN101141273B (zh) 2007-10-12 2007-10-12 一种实现会话盲转业务与会议业务交互的方法

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Cited By (1)

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CN101141273B (zh) * 2007-10-12 2010-12-08 中兴通讯股份有限公司 一种实现会话盲转业务与会议业务交互的方法

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CN1261749A (zh) * 1998-12-21 2000-08-02 西门子公司 H·323数据通信网的多个终端设备间多点连接的方法
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Publication number Priority date Publication date Assignee Title
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CN101141273A (zh) 2008-03-12

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