Selective Rebroadcast Suppression (SRS) Scheme for Directional Border Flooding in Mobile Ad Hoc Networks

Abstract

A Directional Border Flooding (DBF) scheme is a practical means of solving the broadcast storm problem in Mobile Ad Hoc Networks (MANET), by dealing with a cross layer design of medium access control and network routing processes. In this paper, a new type of patching scheme, Selective Rebroadcast Suppression (SRS) is proposed, in order to reduce unreachable nodes, which govern the overall network reliability in the directional border flooding process. This system determines a group of relay nodes in a distributive manner, to enable a patching scheme to be selectively applied for those that are essential for reliable flooding. The simulation results demonstrate that the proposed SRS patching scheme provides a flexible yet robust method of reducing unnecessary flooding overhead, as much as 32 % when compared with the existing patching scheme, and while maintaining a given level of Route Failure Rate (RFR) performance.