Throughput Analysis of IEEE 802.11 MAC Protocol in Multi-Hop Wireless Ad-Hoc Network (original) (raw)

2010, Journal of Science and Technology Research

Mobile ad hoc networks are highly dynamic networks characterized by the absence of physical infrastructure. In such networks, nodes are able to move, evolve concurrently and synchronize continuously with their neighbours. There have been many studies on modeling and throughput analysis of single-hop 802.11 wireless networks but only a few on the analysis of multi-hop wireless networks. In this paper, Markov chain based models of a collision avoidance MAC protocol for multi-hop wireless ad-hoc networks is employed. These models are used to derive the duration time, transmission probabilities, transition probabilities and steady-state probabilities of the states of node as well as the throughput of MANETs .Simulation results shows that throughput of a MANETs increases with increase in persistent probability, sensing range and length of a DATA frame and also it has a peak value at some point of the persistent probability, sensing range and length of a DATA frame, which is influenced by the number of nodes.