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Encryption method and encryption system of IMS conference medium data of IP multimedia system

A technology for multimedia systems and media data, applied in transmission systems, data exchange details, digital transmission systems, etc., can solve the problems of cumbersome implementation methods, not widely deployed, IPSec is not suitable for IMS conference services, etc., and achieves simple and convenient implementation methods. The effect of ensuring confidential transmission

Inactive Publication Date: 2010-01-27
ZTE CORP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the solution to the security problem of IMS services is the Internet Security Protocol (IPSec), but IPSec is still in the fourth version of the Internet protocol, IPv4, and IPSec, as an optional supplement to IPv4, has not been widely deployed, so IPSec is not applicable to IMS conferencing services
In addition, it can be considered to use Secure Real-time Transport Protocol (SRTP) to solve the security problem of media transmission in IMS conference services, but this may involve public key infrastructure, so the implementation method is cumbersome, and currently few applications use this protocol

Method used

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  • Encryption method and encryption system of IMS conference medium data of IP multimedia system
  • Encryption method and encryption system of IMS conference medium data of IP multimedia system
  • Encryption method and encryption system of IMS conference medium data of IP multimedia system

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Embodiment Construction

[0042] For IMS conferences, the transmission of media data requires Session Description Protocol (SDP) to negotiate media types, media bandwidth, and media codecs, and the transmission permission of media data needs to be communicated to the server through Binary Floor Control Protocol (BFCP). Application, the media data can only be transmitted if the server permits the transmission.

[0043] In an IMS conference, the transmission of media data is negotiated through SIP. The terminal needs to add the type of media data supported by itself, codec, media attribute information, etc. to the SDP information, and notify the server through the Invite message in SIP. The server selects a media combination suitable for the current session according to its own media capabilities. current session, and notify the terminal of the selected media combination through a response message carrying 200 OK.

[0044] The basic idea of ​​the present invention is: the terminal notifies the server of...

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Abstract

The invention discloses an encryption method of IMS conference medium data of an IP multimedia system, comprising the following steps: a terminal notifies a server of own encryption suite information, and the server selects an encryption suite to be used from the received encryption suite information; the terminal applies for a right to speak and notifies an encryption key corresponding to the encryption suite selected by the server to the server, and after the terminal is permitted to speak by the server, the terminal transmits the encrypted medium data to the server. The invention also discloses an encryption system of the IMS conference medium data. The encryption method and the encryption system can realize the encryption of the IMS conference medium data and ensure the secretive transmission of the medium data.

Description

technical field [0001] The invention relates to an IP multimedia system (IMS) in the field of mobile communication, in particular to an encryption method and system for IMS conference media data. Background technique [0002] The IP Multimedia System (IP Multimedia Subsystem, IMS) is a brand-new multimedia service form, which can meet the novel and diversified multimedia service requirements of end users. Currently, IMS is considered to be the core technology of next-generation networks, and it is also an important way to solve the convergence of mobile and fixed networks and introduce differentiated services such as triple convergence of voice, data, and video. [0003] IMS-based conferences can provide users with the functions of creating, managing, terminating, joining and leaving conferences, and also provide users with the function of querying the information of participating users. In an IMS conference, users can communicate using any type of media stream, such as aud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/00H04L12/18H04L9/00H04W12/033
CPCH04L12/1822H04L29/06421H04L29/06217H04L65/4038H04L63/061H04L65/1016H04W12/06
Inventor 梁洁辉施元庆李小勇
Owner ZTE CORP
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