Routing in ad hoc networks is challenging as nodes are mobile and links are continuously created and broken. Current on-demand ad hoc routing algorithms start route discovery after path break, incurring high cost to detect the disconnection and to establish a new route. Specifically, when a path is liable to break, the source is warned about the likelihood of disconnection. The source then starts path discovery avoiding disconnection entirely. A path is likely to break when link availability decreases. Since routing is nondeterministic polynomial (NP) hard, this work proposes an improved ad hoc on-demand multipath distance vector (AOMDV) based on link availability, neighboring node's queuing delay, node mobility, and bit error rate. The optimal path is selected using BAT meta-heuristic optimization. Simulation shows improved performance compared to AOMDV.
Mobile Ad hoc Networks (MANET) consists of collection of wireless mobile devices dynamically forming a temporary network without the use of any existing infrastructure or centralized administration. Based on Peer-to-Peer (P2P) network, file sharing is mainly established in MANET. Design and implementation of secured cooperative cache in wireless P2P networks are presented, and proposed solutions to detect the best place to cache the data. The goal of work is to improve file availability for effective file sharing in peer to peer mobile ad hoc network. And also we make analysis of distributed routing protocol DSR and AODV in dynamic peer to peer mobile ad hoc network (MANET) with influence of through gateway transmission.
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