Data sending method, receiving method and device during channel switching process
A data transmission method and channel switching technology, which is applied in the direction of electrical components, transmission systems, two-way working systems, etc., can solve the problems of poor video channel switching, waste of bandwidth resources, and insufficient use of spare bandwidth, etc., to improve video quality Effect
Active Publication Date: 2010-12-22
HONOR DEVICE CO LTD
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Problems solved by technology
[0004] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: since the client will leave the multiplexed multicast group after a period of time after joining the original multicast group, after the client joins the original multicast group For a period of time, there will be twice the data flow of the original multicast stream and the multiplexed multicast stream on the separate link of the client
Under the condition of limited bandwidth of the client, data packet loss will occur, affecting the service quality of channel switching
In addition, the existing multiplexed multicast group exists statically. Since the multiplexed multicast group needs to meet the needs of low-speed users, the spare bandwidth of clients with high bandwidth cannot be fully utilized, resulting in a waste of bandwidth resources; Moreover, the client's buffer cannot be buffered quickly, and the channel switching video is poor
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[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0029] The technical solutions of the embodiments of the present invention will be further described below in conjunction with the drawings and specific embodiments.
[0030] In the FCC service of IPTV, the channel switching server provides at least one multiplexed multicast stream that has a delay with the original multicast stream to provide users with channel switching services. When the channel switching server receives the channel swit...
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The embodiment of the invention provides a data sending method, a receiving method and a device during the channel switching process, and a channel switching server sends data packets to clients through the multicast way during the channel switching process and simultaneously carries out unicast data sending against different clients, thereby fully utilizing free bandwidth of different users to quickly complete channel switching, leading the high-speed users to fully utilize the free bandwidth to fill up a channel switching buffer area in advance, further completing the channel switching and upgrading the channel switching video quality, simultaneously not affecting the low-speed user services and reflecting the differentiated services for the users.
Description
Technical field [0001] The embodiment of the present invention relates to the technical field of untrusted communication, and in particular to a method and a device for transmitting data in a channel switching process. Background technique [0002] In Internet Protocol Television (IPTV) services, channel switching speed is an important indicator that affects service quality. The channel switching time is the time from when the user issues a channel switching instruction to when the user watches the content of the new channel. After different users send channel switching instructions to different set-top boxes, multiple set-top boxes send channel switching requests to the channel switching server that provides channel switching services at the same time; after the channel switching server receives the user’s channel switching request, A response to the request is to provide multiple users with new channel services at the same time in the form of multicast; after the user accesses...
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IPC IPC(8): H04N7/173H04L29/06
Inventor 陈光海邸佩云许阳坡邹子轩刘欣
Owner HONOR DEVICE CO LTD