WSEAS Transactions on Communications
Print ISSN: 1109-2742, E-ISSN: 2224-2864
Volume 14, 2015
Wireless Broadcast Transmission Scheme for Reliable Video-Streaming Service
Authors: , ,
Abstract: Recently, there has been growing interest in real-time streaming services such as IPTV over wireless access networks as it promises to deliver multimedia contents to clients whenever and wherever. However, providing those services over wireless networks in a timely and reliable manner is challenging due to high bandwidth demands, scarce radio resources, and lossy characteristics of wireless networks. A wireless channel may suffer from multi-path fading and interference, which may cause random packet losses; to make things worse, wireless link layer does not provide retransmission for multicast/broadcast traffic. This would impact the clients’ quality of experience of an IPTV programme. Unicast retransmission solutions improves client’s quality but at the bandwidth expense. This paper presents a transmission scheme for video streaming applications over last mile wireless networks, relaying on the use of Network Coding techniques to increase the overall performance, by means of reducing the number of physical transmissions resulting in reduced bandwidth consumption. Due to the bandwidth reduction, Internet Service Providers can increase the number of clients over the same infrastructure or, alternatively, offer more services to the clients. Results from practical testbed show that the number of transmissions can be significantly reduced and total bandwidth required to deliver the same content can be reduced for up to 15 %.
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Pages: 256-266
WSEAS Transactions on Communications, ISSN / E-ISSN: 1109-2742 / 2224-2864, Volume 14, 2015, Art. #31