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An implementation method for final call in IP multimedia subsystem centrally controlled service

A multimedia subsystem and centralized control technology, applied in the field of communication, can solve problems such as low efficiency and long call setup time

Inactive Publication Date: 2011-04-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the call setup time is relatively long and the efficiency is low

Method used

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  • An implementation method for final call in IP multimedia subsystem centrally controlled service
  • An implementation method for final call in IP multimedia subsystem centrally controlled service
  • An implementation method for final call in IP multimedia subsystem centrally controlled service

Examples

Experimental program
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Embodiment Construction

[0058] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0059] After ICCF receives the called request from CSCF, it sends the called request message carrying the calling information, called information and ICCF information to L-CAAF-n through the session control path, and L-CAAF-n passes through the next The above steps to establish the called process:

[0060] The first step is to use the ICCF address in the ICCF information to initiate a calling process to the ICCF and establish a connection with the ICCF, specifically including:

[0061] Step 1a, L-CAAF-n sends a call establishment request message carrying the ICCF address to VMSC, and initiates call establishment;

[0062] Step 2a, VMSC initiates an ISUP initial address message to MGCF according to the ICCF address;

[0063] In step 3a, the MGCF also initiates a SIP session request message according to the ICCF address, and the message is routed to the ICCF ...

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Abstract

The method is used for making the non ICS UE capable of realizing the calling. It comprises: after ICCF receives the session request message from calling side, it sends called request message to L-CAAF-n through CSCF; after L-CAAR-n receives the called message, it sends call establishment request message to the ICCF through the bearer control path; the ICCF correlates the called request message to the call establishment request message and then receives the ringing message from the ICCF; the L-CAAF-n sends call establishment request message to the called UE and receives the ringing message from the called UE; after L-CAAF-n receives two ringing messages, it sends the ringing message to the calling side through CSCF to realize the calling.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a method for realizing centralized control of service termination by an IP multimedia subsystem. Background technique [0002] IP (Internet Protocol, referred to as IP) multimedia subsystem (IPMultimedia Core Network Subsystem, referred to as IMS) is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3GPP) , which builds an open and flexible service environment, supports multimedia applications, and provides users with rich multimedia services. [0003] IMS is an IP-based telecommunications network architecture and has nothing to do with access technology. In addition to providing services for packet access networks such as GPRS (General Packet Radio Service) and WLAN (Wireless Local Area Network, wireless local area network), it also provides It can provide services for mobile cellular networks such as GSM (Global System for Mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04W76/00H04W4/12H04W76/02
Inventor 游世林谢宝国蔡继燕
Owner ZTE CORP