Alcatel Lucent

Yann Leprovost

Bessem Sayadi

Cedric Marin

Olivier Poupel

Marie-Line Alberi Morel

Cédric Marin

A method for reordering and multiplexing multimedia packets from multimedia data streams (S, S, . . . SN) pertaining to interrelated sessions includes a step of searching within the packets of a stream having the highest frame rate amongst said multimedia streams, for a common timing variable (TS) of the packet associated with the next frame of said multimedia data, in a predetermined order related to the encoding process with which said data were encoded, and a step of providing the packets in said predetermined order across said sessions in the order of the session interdependency. A device for performing this method is disclosed as well.

Method and device for reordering and multiplexing multimedia packets from multimedia streams pertaining to interrelated sessions

A method is dedicated to encoding data that must be transmitted by means of a wave-based transmission infrastructure, and comprises i) a step consisting of creating in parallel M first matrices having T rows and C columns with subsets of data from B successive received bursts, the subsets of data from each burst being distributed within at least two successive first matrices, ii) a step consisting of creating in parallel M second matrices each having T rows and N columns with parity symbols resulting from encoding the data that is respectively contained in the rows of each of the M first matrices, iii) a step consisting of creating in parallel M first matrices having K rows and C columns with parity symbols resulting from encoding the data that is respectively contained in the columns of each of the M first matrices, and iv) a step consisting of distributing by interlacing, firstly, J subsets of parity symbols from each second matrix into J successive sets, and secondly P subsets of parity symbols from each third matrix into P of these successive sets, and of placing into each of the successive sets the respective data from the successive received bursts.

Method for encoding data with double-interlaced parity symbols, for a radio infrastructure, and associated codec

A process for delivering a video stream over a bidirectional wireless channel between a video encoder and a video decoder, is provided. The video frames of the video stream are encoded by determining predictions for defined partitions of the video frames, a prediction being based on at least one reference area of a reference frame of the video stream; one motion vector associated to said reference area; and a weighting factor associated to said reference area. The difference between partition and corresponding predicted partition is done to establish a partition residual, the encoded video stream with partition residual are transmitted to the video decoder to decode predicted partition, decoded partition of the video frame being formed by combination of decoded predicted partition and corresponding partition residual. A transmission error probability of the decoded partition is fed back to the video encoder.

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Nozay, France

Yann Leprovost