Reliable Video-Streaming Delivery in Wireless Access Networks Using Network Coding
Providing real-time streaming services such as Internet Protocol TeleVision (IPTV) over last mile wireless networks is challenging due to high bandwidth demands, scarce radio resources and lossy characteristics of wireless networks. This paper presents wireless system for reliable video-streaming over wireless networks based on advanced retransmission scheme. The concept embraces characteristics of wireless media and is based on Network Coding (NC) in order to improve bandwidth utilization in terms of bandwidth reduction. Bandwidth reduction is for Internet Service Providers (ISPs) of paramount importance as it means additional clients over the same infrastructure or, alternatively, additional services that can be offered. Results from practical testbed show that the number of retransmissions can be significantly reduced i.e. total bandwidth can be reduced for up to 15% assuring the same service.