6.1 Network Coding for 4G wireless Network: Proposed Strategy
In this section, a novel proposal has been made that puts forward a variety of network coding approaches, and provides an efficient way to resolve the issues in Network Coding by encoding at the source, the core nodes as well as decoding at the edge. Mechanisms like progressive downloads have been designed to compensate for routing and decoding delays that can cause betterment to the video experience. Video streaming on the Internet heavily rely on file transfer to provide the video end to end. The decoding delays associated with these codes can however be very “expensive” for video quality. In addition, source based solutions can burden a network along the packet route when only the edges requires addedreliability. Here a Network Coding solution can recover packets efficiently since the “lost” packet is part of a linear combination of transmitted packets. In Figure 4, the network coding principle is illustrated[2].