RESCUE

During crisis situations, critical warning messages and evacuation information needs to be disseminated to affected people in a reliable and timely manner. It is expected that in the near future, other than cellular interfaces, cell phones will be equipped with Wi-Fi interfaces as well, through which cell phones can connect to wireless access points or communicate with each other in ad-hoc mode. Cell phones with dual interfaces are especially helpful in crisis situation, The Wi-Fi interfaces come into play in circumstances where some of the cellular towers are destroyed by disaster. They can help end users form ad hoc networks between each other, relaying information from those who have received it from cellular towers to those who are lack of cellular connectivity. In this paper, we designed combined strategy for fast dissemination of information to not only nodes that have access to the cellular tower but also those who lose cellular connectivity but can be reached by Wi-Fi connections. The location and movements of the nodes are taken into consideration.

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