In Wireless Ad-hoc Networks (WANETs) obstruction occurs due to the packet loss and it can be successfully reduced by involving congestion control scheme which includes routing algorithm and a flow control at the network layer. In this paper, we propose an agent based congestion control technique for WANETs. In our technique, the information about network congestion is collected and distributed by wireless agents (WA). A wireless agent based congestion control AODV routing protocol is proposed to avoid congestion in ad-hoc network. Some wireless agents are collected in ad-hoc network, which carry routing information and nodes congestion status. When wireless agent movements happen through the network, it can select a less-loaded neighbor node as its next hop and update the routing table according to the node’s congestion status. With the support of wireless agents, the nodes can get the dynamic network topology in time. By simulation results, we have shown that our proposed technique attains high delivery ratio.

AODV routing protocol, congestion control wireless ad hoc networks (WANETs), wireless agents (WA), total congestion metric (TCM), enhanced distributed channel access (EDCA), transmission opportunity limit (TXOP).