A Trust Based Congestion Aware Hybrid Ant Colony Optimization Algorithm for Energy Efficient Routing in Wireless Sensor Networks (TC-ACO)

摘要

Congestion is a problem of paramount importance in resource constrainedWireless Sensor Networks, especially for large networks, where the trafficloads exceed the available capacity of the resources. Sensor nodes are prone tofailure and the misbehavior of these faulty nodes creates further congestion.The resulting effect is a degradation in network performance, additionalcomputation and increased energy consumption, which in turn decreases networklifetime. Hence, the data packet routing algorithm should consider congestionas one of the parameters, in addition to the role of the faulty nodes and notmerely energy efficient protocols. Unfortunately most of the researchers havetried to make the routing schemes energy efficient without consideringcongestion factor and the effect of the faulty nodes. In this paper we haveproposed a congestion aware, energy efficient, routing approach that utilizesAnt Colony Optimization algorithm, in which faulty nodes are isolated by meansof the concept of trust. The merits of the proposed scheme are verified throughsimulations where they are compared with other protocols.