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Communication method and device

A communication method and technology for describing information, applied in the field of communication to achieve the effect of media routing optimization

Active Publication Date: 2015-07-08
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a communication method and device. The method and device provided by the present invention solve the problem of large circuitous routing when CS and IMS intercommunicate in the prior art

Method used

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Embodiment 1

[0044] Embodiment one, as figure 1 As shown, the embodiment of the present invention provides a communication method. The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings:

[0045] Step 101, the media gateway control function entity MGCF of the CS network in the circuit-switched domain receives a call request sent by the home terminal as the calling terminal, and the called terminal of the call request is an IP multimedia system IMS user terminal, and the MGCF sends itself After adding the description information to the call request, forwarding the forward call request message added with the description information to the IMS network;

[0046] Wherein, after the MGCF adds its own description information to the call request, forwarding the forward call request message added with the description information to the IMS network includes:

[0047] The MGCF adds its own description information to the he...

Embodiment 2

[0053] Embodiment two, such as figure 2 As shown, the embodiment of the present invention also provides another communication method. When the calling terminal initiates a call to the called terminal of the IP multimedia system IMS network from the circuit-switched domain CS network, the method specifically includes steps:

[0054] Step 201: After receiving the call request sent from the media gateway control function entity MGCF where the calling terminal is currently located, the egress gateway control function entity BGCF of the called terminal obtains the address information of the MGCF from the call request ; forward the call request to the called terminal, so that after the called terminal establishes a communication link with the calling terminal, the interactive data with the calling terminal will be passed through the MGCF according to the address information of the MGCF carried in the call request sent to the calling terminal;

[0055] Wherein, obtaining the addres...

Embodiment 4

[0064] Embodiment four, such as Figure 4 As shown, according to the method shown in the embodiment, the embodiment of the present invention also provides a media gateway control function entity, and the media gateway control function entity includes:

[0065] The receiving module 401 is configured to receive a call request sent by the terminal as the calling terminal, and the called terminal of the call request is an IP multimedia system IMS user terminal;

[0066] An information adding module 402, configured to add its own description information to the call request and forward the forward call request message with the description information added to the IMS network;

[0067] The forwarding module 403 is configured to forward the call response to the calling terminal after receiving the call response returned by the called terminal in response to the forward call request; wherein the call response is the called terminal The home egress gateway control function entity BGCF ...

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Abstract

The invention discloses a communication method and device. The method comprises the following steps: receiving a call request of a calling terminal specific to a called terminal of an IMS (IP Multimedia Subsystem) network by an MGCF (Media Gateway Control Function) of a circuit switched domain (CS) network, adding the description information of the MGCF into the call request, and transmitting the call request added with the description information forwards to the IMS network; after a call response returned by the called terminal is received, forwarding the call response to the calling terminal; and after call connection is established between the calling terminal and the called terminal, forwarding media streams for interaction between the calling terminal and the called terminal. According to the method and device disclosed by the invention, a calling end office selects the entrance of a local MGCF into a called network by means of configuration of route data during communication between the CS network and the IMS network, so that media is prevented from detouring to a called area, and route detouring during communication between the CS network and the IMS network is reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a communication method and device. Background technique [0002] The IP multimedia system (IP Multimedia Subsystem, IMS) has been deployed more and more widely, and at the same time, with the deployment of VoLTE, the IMS has become the core network of the next generation communication. And a large number of traditional circuit switched domain (Circuit Switched Domain, CS) network users will also coexist with IMS users for a certain period of time, so the intercommunication between CS and IMS will become a very common communication scenario. [0003] The intercommunication between CS and IMS includes a variety of scenarios, in which the call is initiated by the CS, and returns to the CS after being processed by the IMS. The service implementation may include the following situations: [0004] The CS network caller initiates a call to a VoLTE user, and decides to con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/721
Inventor 宋月姜怡
Owner CHINA MOBILE COMM GRP CO LTD
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