Data Storage and Dissemination in Clustered Wireless Ad-Hoc Networks

M.K. Denko (Canada)


Ad-hoc networks, data management, mobile computing and wireless networks


A mobile ad-hoc network (MANET) is a collection of wireless mobile nodes forming a temporary network without the aid of fixed communication infrastructure. Since every node can be mobile and network topology changes can occur frequently, node disconnection is a common mode of operation in MANETs. Providing reliable data access and message delivery is a challenge in this dynamic network environment. In this paper, we propose a replica-based data-storage mechanism and undelivered-message queue schemes to provide reliable data storage and dissemination. Our solutions are based on a clustered MANET where nodes in the network are divided into small groups that are suitable for carrying out localized data management. The clustering architecture reduces communication overheads and enhances the scalability of our data management schemes. Simulation results indicate that both packet delivery and data accessibility can be improved using the proposed schemes.

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