An Effective Neighborhood Initial-Playback Based Caching Scheme for Video on Demand over Mobile Ad Hoc Network

Abstract

Abstract-Video on demand (VOD) System over mobile Ad hoc network (MANET) is a system that provides video services to mobile clients. The main problem in these systems is the high service delay where the mobile clients have to wait to watch their favorite movie. The importance of this study is to find a solution on how to reduce the delay time in the system. This paper proposed a novel caching scheme called neighborhood-initial playback based caching scheme (NIPBCS) to overcome the service delay by sending the 1st segment of a movie to the new client by a local forwarder (LF). The LFs will send the 1st segment of the movie selected to the client's First buffer when the new client's arrival is detected. When the client wants to watch another movie, the client can tune in to the broadcasting channel that will broadcast the 1st segment of the movie or the client can request from the neighbors or otherwise if the movie the client wants to watch is the same as the 1st segment sent by the Local Forwarder, the client can just switch to the First Buffer and start watching the movie. The aim of this caching scheme is to reduce the time delay in VOD system over MANET. The result obtained proves that NIPBCS reduces the time delay of the system when the number of clients increases and the client failure probability is reduced when the number of clients increases.Index Terms-Video on demand, MANET, NIPBCS, staggered broadcast

Effective Broadcasting and Caching Technique for Video on Demand over Wireless Network

“…LMF are responsible to provide VOD services within a limited transmission range, such as, inside buildings while using standard like WiFi (IEEE 802.11 a/b/g). The previous papers briefly elaborated the components of the system [34] and [35], while this paper focuses on the broadcasting techniques and Cushion cashing mechanism. The main problem with broadcasting scheme is its service delay, when the clients miss the broadcasting of the 1 st segment; they have to wait until the next broadcasting to join and playback the 1 st segments of the video.…”