ABSTRACT Mobile ad hoc networks (MANETs) commonly use a flooding strategy to broadcast messages throughout the network. Although the flooding mechanism can ensure the traversal rate of broadcasting packets, network nodes receive a large number of repeated redundant information in the scenario of large network density. It exacerbates the signal conflict and channel contention between nodes, which is prone to generating broadcasting storms, leading to a reduction in the arrival rate of broadcasting packets and affecting the reliability of broadcasting. Therefore, the broadcasting mechanism in mobile ad hoc networks needs to reduce the broadcasting conflict rate between nodes while ensuring the reliability and traversal rate of broadcasting. To contend with the above problem, a broadcast suppression algorithm based on geolocation coverage (BSGC) is proposed in this paper. During the route discovery process, the intermediate node obtains the geolocation information and updates the remaining energy value after receiving the route request message. The forwarding probability function is designed by considering the effect of neighbor node degree and the residual energy of the node on the forwarding probability while forwarding the route request packet. A waiting delay threshold and forward broadcast packets are set according to the forwarding probability when the waiting time exceeds the threshold. Simulated experiments of AODV, MFlood, DPB, and BSGC protocols were conducted under different network densities and load scenarios, which show that the strategy of probabilistic forwarding of the BSGC algorithm reduces the number of nodes involved in forwarding route request packets and does not need to periodically broadcast Hello messages, which is significantly better than the comparison protocols in terms of performance metrics, such as network overhead, end‐to‐end delay, packet delivery rate, and packet loss rate.
Yinjun et al. (Fri,) studied this question.