A Method for Updating Location-based Information on Ad-hoc Network

Abstract We propose a method which can consis-tently update location-based information kept by mobile terminals which are located in a position where location-based information is provided and which communicate with each other on ad-hoc network. In our approach, mobile terminals elect a mobile terminal as a coordina-tor providing the consistency control mechanism. We propose an election algorithm for a coordinator among indefinite mobile terminals. In addition, we propose a negotiation protocol in which two coordinators specify one of them as a new coordinator when more than one coordinator is elected caused by unstable wireless com-munication link. The results of our simulation experi-ments show that our proposed method can update infor-mation around 2 seconds and elect a coordinator around 5 seconds