IPTV In Managed Networks

Abstract

The present invention is directed to a method and to a device of servicing a channel change request in a digital network with at least a client and a server. The method comprising transmitting a multimedia stream using a multicast stream and a unicast stream, wherein a transcoder reorganizes the audio and video packets of the elementary stream of the multimedia stream on a time base, such that theaudio and video packets related to the same frame are progressively sent adjacent to each other, on time base, in the serialized transport stream of the multicast stream. The channel change request from the client is an http unicast request and the server reply contains an http header and an http body; the http header contains parameters to setup a decoder at the client, as given in the request from the client to the server; a burst overhead in the unicast stream is set according to the parameters to setup the decoder and computed by the client; the parameters are related to the bandwidth ofthe client internet access already under usage comprising the case when more than one Set- Top-Box (STB) is running in the same household. The http body contains the PMT (Program Map Table) information relevant to the first independently decodable frame.

Description

technical field [0001] The invention relates to a method, device and system for realizing fast channel change in IPTV service through a managed telecommunication network. Background technique [0002] In the competitive market for Internet Protocol Television (IPTV), service providers deliver high-quality television services over IP networks. The currently available solutions largely boil down to two main groups, namely over-the-top (OTT) IPTV services and services provided by the telcos that own the network. [0003] Telecom operators need to provide reliable and scalable solutions that ensure quality of service under all conditions. [0004] A current solution to serve a large number of clients and ensure scalability is multicast: this allows efficient delivery of multimedia streams. [0005] With multimedia streaming to several customers, the IPTV environment is a rather complex environment, especially when some level of service level agreement must be guaranteed. [0...

AI Technical Summary

Problems solved by technology

Such a small footprint runs on a wide range of chipsets with low processing power, but does not allow more complex logic to be implemented on the client side

With such a "one-size-fits-all" approach, unnecessary resources are consumed (such as the high latency of a live broadcast channel that has to be accepted) and they are not exploited at the client end with the help of new very powerful processors and the associated increased computing power. any advantage of the latest developments in the end

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