Multimedia call negotiation method, system and video interworking gateway, multimedia terminal
A technology of a multimedia system and an intercommunication gateway, applied in the fields of multimedia terminals and multimedia call negotiation, can solve the problems of consuming VIG media resources, affecting the user's video call experience, increasing the transcoding delay and end-to-end media stream transmission delay, etc. The effect of saving device resources, improving media negotiation process, and reducing end-to-end media streaming delay
Active Publication Date: 2014-05-14
CHINA TELECOM CORP LTD
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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, a multimedia call negotiation system, a video interworking gateway and a multimedia terminal. According to the technical scheme provided by the invention, multimedia parameters that are supported by the video interworking gateway (VIG) are sequentially added into a first media ability list through the video interworking gateway (VIG), such that a second media ability list can be formed; and a called IMS terminal sequentially searches multimedia parameters in the second media ability list that are supported by the called IMS terminal. Through selection behaviors of the video interworking gateway (VIG) and the IMS terminals in a process in which IMS multimedia call establishment is restrained, a media negotiation process can be improved, and the results of multimedia call negotiation can be optimized, and unnecessary media conversion in a multimedia call process can be avoided, and video interworking gateway (VIG) equipment resources can be saved.
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