User cooperative erasure recovery in E-MBMS based on network coding

Recent years wireless networks have witnessed an explosive growth in enhanced multimedia broadcast and multicast service (eMBMS). Scalable video coding (SVC) streaming is a mainstream coding in eMBMS. In this paper we present a novel eMBMS user cooperative erasure recovery mechanism based on network coding where SVC streaming and layer network coding are broadcasted by source node. Local cooperative repair together with network coding is used to save total overhead of links and reduce the retransmission times, for purpose of improving Quality of Service (QoS) of video streaming. The simulation results show that the number of retransmissions declines a lot through our mechanism. Local user cooperation saves link overhead as much as 55% when sender disseminates SVC streaming. Combining with layer network coding, the overhead can also be reduced about 17%.