Dynamic Bandwidth Management for Multihop Wireless Ad Hoc Networks

In this paper, we propose a new cross-layer protocol named DRBT (dynamic regulation of Best Effort traffic) which supports QoS guarantees and provides a distributed regulation mechanism for Best Effort traffic in wireless ad hoc networks. By adapting the rate of best effort traffic at the MAC Layer, DRBT increases the acceptance rate of QoS flows through the network. The protocol also provides an accurate method to evaluate the available bandwidth in IEEE 802.11-based ad hoc networks which differentiates between QoS applications and those which are less exigent in term of bandwidth more commonly called Best Effort traffic. Through simulations, we compare the performance of our proposal scheme with AODV and ABE.