Disaster Communication Network by Combination of Different Wireless LANs

So far we have developed a disaster information network which is very effective and robust using wireless network. In this paper, we introduce a mobile network for disaster communication network by combination of different wireless LANs and mobile network. Currently available wireless LANs such as IEEE802.11b,g,j,n, IEEE802.16 (WiMAX), cellular network are combined with a mobile router and loaded on a car to build a mobile network node. Using multiple mobile network nodes, a large disaster communication network is organized. A communication path between nodes has multiple links and the suitable link among them is selected based on the distance, power and transmission frequency. By multi-hopping those nodes, user can communicate with other user and send/receive disaster information even though some of information infrastructure are damaged. In this paper, we designed and implemented a wireless mobile network with currently available different wireless network and constructed a prototyped system to evaluate the functional and performance.