Multimedia call negotiation method, system, video interworking gateway, and multimedia terminal
A multimedia system and intercommunication gateway technology, which is applied in the field of multimedia terminals and multimedia call negotiation, can solve the problems of consuming VIG media resources, affecting user video call experience, increasing transcoding delay and end-to-end media stream transmission delay, etc., to achieve Save device resources, improve the media negotiation process, and reduce the effect of end-to-end media stream transmission delay
Active Publication Date: 2017-10-13
CHINA TELECOM CORP LTD
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Problems solved by technology
For example, in figure 1 In the middle, the calling VIG implements media stream conversion between codec format a and b, and the called VIG implements media stream conversion between codec format b and c, which brings unnecessary media conversion, which will not only consume VIG internal media resources, and increases the transcoding delay and end-to-end media stream transmission delay, which affects the user experience of video calls
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[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. It should be noted that the relative arrangement of components and steps set forth in these embodiments does not limit the scope of the invention unless specifically stated otherwise.
[0046] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0047] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discu...
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The invention discloses a multimedia call negotiation method and system, a video interworking gateway and a multimedia terminal. In the technical solution provided by the present invention, the video interworking gateway VIG sequentially adds multimedia parameters supported by VIG in front of the first media capability list to form a second media capability list, and the called IMS terminal is included in the second media capability list Search the multimedia parameters supported by the called IMS terminal in an orderly manner. By restricting the selection behavior of VIG and IMS terminal during the establishment of the IMS multimedia call, the media negotiation process can be improved, the result of the multimedia call negotiation can be optimized, and unnecessary errors in the multimedia call process can be avoided. Media conversion, saving VIG device resources.
Description
technical field [0001] The invention relates to the communication field, in particular to a multimedia call negotiation method and system, a video interworking gateway, and a multimedia terminal. Background technique [0002] The IP Multimedia System (IP Multimedia Subsystem, IMS), as the preferred core network architecture for next-generation IP services, is a brand-new form of multimedia services. It can meet the needs of existing terminal customers for diversified multimedia services, and provides a platform for the integration of all IP networks for fixed and mobile networks, enabling operators to better control information and develop new services. [0003] Video calling is one of the basic services of IMS, and it is also an important basis for building more complex multimedia convergence services. Any terminal with video capabilities can initiate an IMS video call as an IMS terminal, such as: videophone, video call software, 3G mobile phone, set-top box, tablet comput...
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IPC IPC(8): H04N7/14H04L29/06
Inventor 钮颖彬
Owner CHINA TELECOM CORP LTD