Video on Demand Caching System using NIPBCS over Mobile Ad Hoc Network
Vaithegy Doraisamy, Saleh Ali Alomari, Putra Sumari · International Journal of Digital Content Technology and its Applications · 2011
In this paper proposed a caching scheme to reduce the time delay in Video on Demand (VOD) System over MANET. VOD System over MANET is an interactive multimedia system that provides video services to mobile clients. Mobile clients who use the system will encounter high service delay to watch their favorite movie and this is the main problem in this system. The proposed caching scheme is called Neighborhood-Initial Playback Based Caching Scheme (NIPBCS) to overcome the service delay in the system. In NIPBC, when a new client enters the MANET network, the Local Forwarder (LF) will detect the new client upon arrival and will send the 1 segment of a movie to the new client’s First buffer. The new client can request for the 1 segment of its favorite movie by tuning in to a channel from the Staggered Broadcasting Protocol that will broadcast the 1 segment of the movie or the new client can request from the neighbors. If the new clients’ favorite movie is the same as the 1 segment of a movie sent by the LF, the client can just switch to the First Buffer and start watching the movie. By this way the aim of this caching scheme is achieved that is to reduce the time delay in VOD system over MANET. The performance of the system is evaluated through a simulation study and the extensive simulation was conducted to get the performance result of the NIPBCS. The result obtained from the simulation shows that NIPBCS reduces 10% of the time delay of the system compared to the existing caching scheme.