An Adaptive Hierarchical Extension of DSR:The Cluster Source Routing

Numerous studies have shown the difficulty for a single routing protocol toscale with respect to mobility and network size in wireless ad hoc networks. This paperpresents a cluster-based extension of the DSR protocol called Cluster Source Routing(CSR)1. The proposed approach improves the scalability of DSR in high-density andlow-mobility networks. The originality of our proposal is an adaptive use of DSR andCSR routing modes according to network density and node mobility in order to produceless overhead and perform efficient routing. Indeed, adaptation is a key feature for arouting protocol since network dynamics can suddenly and widely change in wirelessad hoc networks. Thus, the DSR-CSR protocol achieves enhanced performance over abroader {network density, node mobility} domain as shown by simulations