FPR: fuzzy controlled probabilistic rebroadcast in mobile ad hoc network
Abstract
Broadcasting in mobile ad hoc networks is performed using various techniques like blind flooding, counter based broadcast, probabilistic broadcast etc. Among these flooding is the most primitive, where every node forwards the broadcast message whenever it gets the message for the first time. However, duplicate copies of the same broadcast message are always eliminated. In spite of simplicity of the mechanism, it results in highly redundant retransmission, contention and collision in the network. This is popularly termed as broadcast storm problem. Probabilistic broadcast method reduces the broadcast probability from 1 to some fraction close to 0.5. Certain probabilistic scheme use fixed probability while some others take into account network size, total number of nodes etc. The proposed article fuzzy controlled probabilistic broadcast or FPR computes rebroadcast probability of a node based on various factors line distance of downlink neighbours of current node from broadcast source, left, right, top, bottom coordinators of nodes already covered, hop count etc. Simulation results reveal that the proposed protocol improves network throughput, saves a lot of rebroadcast while reducing end-to-end delay.
Keywords
Ad Hoc networks Broadcast region Flooding Hop count Rebroadcast probability DelayReferences
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