Scalable Video Streaming Techniques over Cooperative Relay Networks

This paper investigates a communication method using unequal loss protected layered video and explores use of this over a cooperative relay network. The method is adapted to prioritized video transmission to explore two prioritized layering (scalable) video techniques. Cooperative communication networks can reduce power consumption and benefit wireless networks, where intermediate nodes act as relays of transmitted data, increasing the coverage and network throughput. The methods are therefore evaluated in the context of a number of different relay collaboration strategies using a finite state Markov chain (FSMC) loss model for the wireless channel. Random linear codes are ideally suited to multiple path transmission because the aggregated received symbols over multiple paths assist decoding at the receiver. The results illustrate the advantages for these application scenarios using each considered strategy and analyze the impact in a relay-based network. General Terms Video communications, Relay networks, Scalable video.