Congestion aware nodes (CAN) based scheme for mobile ad hoc networks

Congestion in mobile ad hoc networks not only results in transmission delay and packet loss, but also degrades throughput. For effective congestion detection and control, accurate estimation of MAC overhead, packet retransmission, backoff interval and queuing delay is necessary. This paper proposes a congestion aware nodes (CAN) based scheme to control congestion in mobile ad hoc networks. In this scheme congestion related information is exchanged between MAC and routing layers. The parameters used by CAN for congestion detection at MAC layer are MAC overhead, packet retransmission, backoff interval and queuing delay. Simulation results show that Dynamic Source Routing (DSR) network with CAN perform better than the DSR network without CAN.