Media negotiation method and media negotiation device
A media negotiation and media technology, applied in the field of communication, can solve problems such as affecting the normal output of video and audio, high packet loss rate, and inability to know the transmission quality of the transmission link network, so as to reduce packet loss and improve user experience.
Inactive Publication Date: 2017-06-09
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology
Therefore, neither the calling UE nor the called UE can know whether the information is transmitted through the air interface, wired transmission, or WIFI transmission, nor can they know the network transmission quality of the transmission link, etc.
For different transmission links, when the packet loss rate of any link is too high, or the bandwidth cannot meet the requirements, it is easy to cause picture freeze, sound distortion, etc.
[0004] To sum up, when the existing media negotiation method is used for inter-media communication, it is easy to cause packet loss, which in turn affects the normal output of video, audio, etc.
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[0114] Embodiments of the present invention provide a method and device for media negotiation, which are used to reduce packet loss during media communication, ensure normal output of video, audio, etc., and further improve user experience.
[0115] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0116] On the called UE side, see figure 1 , a method for media negotiation provided by an embodiment of the present invention, including:
[0117] S101. The called user equipment UE acquires network transmission parameters and a Session Description Protocol SDP message sent by the calling UE;
[0118] S102. The called UE determines, according to the network...
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The invention discloses a media negotiation method and a media negotiation device, so as to reduce a packet loss phenomenon in the case of media communication, ensure normal transmission of media files such as a video and an audio and further enhance the user experience. The media negotiation method provided by the invention comprises steps: called user equipment (UE) acquires network transmission parameters and a session description protocol (SDP) message sent by calling UE; according to the network transmission parameters and the SDP message, the called UE determines a media encoding format adopted in the case of media communication with the calling UE; and the called UE sends the media encoding format to the calling UE, and the calling UE completes the media negotiation process according to the media encoding format.
Description
technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for media negotiation. Background technique [0002] Media negotiation runs through IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) services. The calling user equipment (User Equipment, UE) and the called UE determine a media encoding format supported by both parties through media negotiation, and then according to the The media encoding format transmits media information and realizes the presentation of images and sounds. [0003] In the prior art, during media negotiation between the calling UE and the called UE, the selection of the media coding format is random. For different media encoding formats, their characteristics are different. For example, the compression rate of H264 encoding format is higher than that of H263 encoding format, so the bandwidth required for transmitting media information is relatively small; The data pack...
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IPC IPC(8): H04L29/06
CPCH04L63/0428H04L65/1016H04L65/1066H04L65/1101H04L65/75
Inventor 吴鹏程
Owner DATANG MOBILE COMM EQUIP CO LTD