The Betweenness Centrality based Geographic Routing Protocol for Unmanned Ground Systems

Ad-hoc multi-hop communication is an essential technology to operate Unmanned Ground System (UGS) effectively and efficiently. Conventionally many routing protocols have been developed and studied for multi-hop networks such as Mobile Ad-hoc Networks (MANETs). However, given the unique environments and requirements of UGS networks, conventional routing protocols cannot be directly applied. In this paper, we propose the Betweenness Centrality based Geographic Routing (BCGR) protocol, which considers the main functionalities of UGS networks with GPS information. BCGR utilizes Expanded Ego Betweenness centrality, which is a social engineering term, combining information from mobility and location information errors. Our simulation results show that BCGR outperforms conventional routing protocol such as GPSR under the constraints that UGS applications provide.