Partial Caching Scheme for Streaming Multimedia Data in Ad-hoc Network
Backhyun Kim, Iksoo Kim · Advanced science and technology letters · 2014
The streaming technique is a sequence of data made available over time. In the ad-hoc network, the streaming service is hardly served as the path is frequently broken due to the movement of nodes. In this paper, we propose partial caching scheme to reduce the service blocking rate. With the proposed scheme, mobile nodes store the data passing through and by-passing themselves. The cache replacement algorithm is based on the popularity of multimedia contents and the distance of the data block. This has resulted in the increases of the probability that mobile node stores the data to be used in future request. In evaluation, we examined our proposed scheme in the view of the cache hit ratios as the function of the number of mobile nodes and in the view of service block rate as the function of the service request rates. The simulation results show that the proposed caching scheme has better performance in cache hit ratio and service blocking rate.