Method for transmitting video contents from a server to a terminal of a user within service periods of a radio transport channel
View Patent ↗The invention related to a method for transmitting video contents from a server to a terminal of a user within service periods (S) of a radio transport channel, each video content being encoded by using scalable codec technology for integrating a scalable codec base layer (b 1 , b 2 , b 3 , b 4 ) and at least one enhancement layer (e 1 , e 2 , e 3 , e 4 ), each service period (S) comprising: —at least one multiplexed time-sliced radio burst (A, A′) comprising at least a part of the base layers (b 1 , b 2 , b 3 , b 4 ); —several multiplexed time-sliced radio bursts (B, C, D, E) comprising the enhancement layers (e 1 , e 2 , e 3 , e 4 ) and the eventual remaining base layers (b 1 , b 2 , b 3 , b 4 ); said method enabling to permute, between two consecutive service periods (S), the transmission order of the enhancement layers bursts (B, C, D, E).
1. A method for transmitting video contents from a server to a terminal of a user within service periods of a radio transport channel, each video content being encoded by using scalable codec technology for integrating a scalable codec base layer and at least one enhancement layer, each service period comprising:
at least one multiplexed time-sliced radio burst comprising at least a part of the base layers;
several multiplexed time-sliced radio bursts comprising the enhancement layers and the eventual remaining base layers;
wherein the method comprises permuting, between two consecutive service periods, the transmission order of the enhancement layers bursts.
2. The method for transmitting according to claim 1 , wherein each service period comprises several base layers bursts, at least two enhancement layers bursts being inserted between two consecutive base layers bursts, wherein the transmission order of the inserted enhancement layers bursts is permuted between two consecutive service periods.
3. The method for transmitting according to claim 2 , wherein the inserted enhancement layers bursts comprise the enhancement layers corresponding to the base layers of the preceding base layers burst.
4. The method for transmitting according to claim 1 , wherein the length of the service periods is variable.
5. The method for transmitting according to claim 1 , wherein the video contents are encoded by using the H264 SVC standard.
6. The method for transmitting according to claim 1 , wherein the encoded video contents are transmitted by using a Time Division Multiplexing transport scheme.
7. The method for transmitting according to claim 1 , wherein the transmission order of the enhancement layers bursts is permuted in a circular way.
8. The method for transmitting according to claim 1 , wherein the base layers provide a correct video quality for their corresponding video contents, the enhancement layers increasing the video quality and the spatial and temporal resolution of the video contents.
9. A server for transmitting video contents to a terminal of a user within service periods of a radio transport channel, the server comprising:
an SVC (Scalable Video Coding) encoder configured to encode each video content by using scalable codec technology for integrating a scalable codec base layer and at least one enhancement layer,
wherein the server is configured to transmit the encoded video content using a time division multiplexing scheme, where in each service period at least one time-sliced radio burst comprising at least a part of the base layers is multiplexed, several time-sliced radio bursts comprising the enhancement layers, and the eventual remaining base layers, wherein the server is configured to permute, between two consecutive service periods, the transmission order of the enhancement layers bursts.
10. A terminal for receiving video contents from a server according to claim 9 , the terminal comprising a receiver integrating a buffer enabled to decode firstly the multiplexed scalable codec base layer of the video content requested by the user of the terminal and then to decode the multiplexed enhancement layers for the video content.