Cooperative Caching Technique for Multimedia Streaming Service in Mobile Ad-hoc Networks
Proceedings of 2019 the 9th International Workshop on Computer Science and Engineering · 2019
Mobile ad-hoc networks are a network consisting of only free-moving nodes.The node itself performs all tasks related to communication.This requires efficient communication techniques such as transmission path management, service and transmission quality management, and security.The caching technique reduces the number of transmission paths and thus enables efficient usage of node energy and transmission bandwidth.In MANET, nodes are more often selected to neighboring nodes than path nodes.The active caching technique that unconditionally stores the received data increases the load of the node as the request rate increases, resulting in a decrease in the available time of the node.In this paper, we propose a method to cache and provide the received content irrespective of whether the content is requested or not.The caching node is selected based on the number of hops from the server among nodes having a direct link with the transmission path.The simulation compares and analyzes the cache hit ratio in terms of the maximum movement speed of the node and the various content request rates.From the simulation results, the proposed technique can obtain a similar cache hit ratio using a relatively small number of caching nodes.