A Multi-Destination Obstacle-Free Geocasting Protocol for Ad Hoc Networks

Abstract

Mobile Ad Hoc networks (MANET) have no infrastructure, with each mobile host acting as a router. The MANET environment contains unpredictable obstacles, such as mountains, lakes, buildings, or subregion without any host, impeding or blocking message relay. This study proposes a geocasting protocol for sending short message from a source host to multiple geocasting regions in Ad Hoc networks. The proposed protocol establishes share path for multiple geocasting regions so that the bandwidth consumption could be reduced. The developed protocol also keeps messages away from unpredictable obstacles and creates a small flooding region. Experimental results show that a source host can send a short message to all hosts located in multiple geographical areas with a high success rate and low flooding overhead.