Analysis of routing overhead in route discovery based on PHY, MAC in noisy MANETs

A Mobile Ad hoc NETwork is built by mobile consumer devices but its efficiency is limited by the battery life. The challenge facing mobile consumer device designers is that the discovery phase of the routing process when attempting to establish a mobile ad hoc network tends to put the highest strain on the battery of the device. They tend to be affected by routing packets which need to be sent during the re-built the route. This paper is concerned with studying the performance analysis of Routing Overhead and its messages in Route discovery based on physical module such as noise power and MAC module such types of access as well as the effect of routing overhead on the lifetime of networks. First study focuses on physical factors in terms of The Signal to Interference plus Noise Ratio. In this study the results shows that there are major effects on the routing overhead of MANETs, once the PHY factors are considered because of re-implementing the route discovery phase more often. Second study focuses on MAC factors in terms of carrier sensing ranges (Virtual carrier sensing RTS/CTS, Physical carrier sensing). From the results can be proposed that that the probability of collision in the channel can be reduced by tuning the carrier sensing thresholds as well as the routing overhead becomes better. It proposes that the power consumption could be enhanced by reduce unnecessary sending and receiving between nodes in route discovery phase (routing overhead) and the factors of PHY, MAC modules need to be considered during the design of routing protocols, as well as the relationships between routing packets and the power consumption have been identified.