Nested harmonic broadcasting for scalable video over mobile datacast channels

Abstract

The integration of reliable Video-on-Demand (VoD) broadcasting schemes in mobile datacast systems, specifically in DVB-H, is studied and enhanced. Sophisticated VoD broadcasting schemes such as Harmonic Broadcasting (HB) allows receivers to tune into the ongoing transmission of a video stream at arbitrary time, while still being able to receive the multimedia sequence from beginning to end, after short initial playout latency. In addition, we address service enhancements by using scalable video coding (SVC) to support heterogeneous receiver capabilities and receiving conditions as well as the reception of the signal from more than on transmission site. We present and discuss options for the integration of VoD broadcasting schemes in combination with fountain codes. Optimizations in parameter selection are discussed. A realistic protocol environment is only slightly modified to support our system concept. Simulation results show the benefits of the discussed VoD scheme compared to existing approaches if integrated in DVB-H

A Joint Interchannel and Network Coding Schema for nVoD Services over Wireless Mesh Networks

“…The nVoD protocols in [29] and [30] employ erasure coding at segment level to improve robustness. Given a packet loss probability p, and a content partition in k blocks, it is necessary to transmit kα (α = 1/(1 − p)) blocks per original segment to recover this packet (i.e.…”

A weighted layered broadcasting scheme for scalable video transmission with multiple site reception

“…For more information on the optimization procedure and the integration of our concept into the DVB-H protocol stack we refer the reader to [15].…”

Mobile TV — ‘Daumenkino’ gets reality

“…In Reference [23], practical aspects for the integration of such a scheme into the DVB-H framework have been studied, combining PB with Raptor Codes [24], which are the most efficient erasure fountain codes known. Moreover, in Reference [25] the scheme has been enhanced even more by incorporating scalable video and multiple sites reception. Receivers have the possibility to trade playout delay with playout quality under different reception conditions, different terminal capabilities, etc.…”