An Effective Caching Scheme for Multimedia in Mobile Ad-hoc Network
Backhyun Kim, Iksoo Kim · Advanced science and technology letters · 2014
Multimedia is large volume of data and is played under the timedependent property. In mobile ad-hoc network, the ceaseless service is hardly served as the path is frequently changed due to the node movement. In this paper, we propose a caching scheme to reduce the service delay. The nodes joining the delivery path store all data passing through and the neighbor nodes store only popular items. The cache replacement algorithm is based on the request frequency, the popularity and the block distance. This increases the probability that mobile node stores the data to be used in the future. In evaluation, we examined our proposed scheme in the view of the caching probability and the cache hit ratio. The simulation results show that the proposed caching scheme has better performance in cases of many requester and high node density.