Wireless Ad Hoc Dissemination for Search and Rescue

• In search and rescue scenarios local information on victims and other finds needs to be disseminated rapidly toother rescue workers and team leaders. However, post disaster scenarios may imply the collapse of informationinfrastructure including cellular communication and Internet connectivity. Even if we consider wireless ad hoccommunication as a means of information dissemination we should count on frequent loss of connectivity in thenetwork due to unpredictable mobility and sparse network topologies. In this paper we present the realization ofan existing manycast protocol (random walk gossip) on commodity handheld devices running the Androidplatform. This communication mode is used to demonstrate the potential for distributed informationdissemination on victims and finds. The application layer is an adaptation of an existing surveying informationtool (POSIT) which is now fully decentralized and relies on text communication to achieve energy efficiency.

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TECHNOLOGY

TEKNIKVETENSKAP

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