In Mobile Ad hoc Networks (MANETs) the main reason for packet loss is due to the link failure or node failure. When the link failure occurs, the upstream node with the cached data in its buffer can retransmit it through the next reliable link by using a bypass route and fault tolerance technique is alone handled. The technique of choosing the bypass route and the way to avoid congestion in the bypass route are not handled. In this paper, we propose an adaptive reliable and congestion control routing protocol to resolve congestion and route errors using bypass route selection in MANETs. When a source node detects congestion on a link along the path, it distributes traffic over alternative paths. The congestion is detected according to the utilization and capacity of link and paths. The distribution of traffic considers the path availability threshold and utilizes a traffic splitting function. If a node cannot resolve the congestion, it signals its neighbors using the congestion indication bit. By using simulation, we show that that the proposed protocol is reliable and achieves more throughput with reduced packet drops.

Mobile Ad hoc Networks Routing Congestion Conscious Routing Link Stability Estimation Bypass Route Discovery