Abstract
In distributed, ubiquitous computing environments, peer-to-peer (p2p) systems have been studied. Distributed hash table (DHT)-based p2p systems can improve load-balancing even though locality utilization and user mobility are not guaranteed. We propose a mobile locality-based hierarchical p2p overlay network (MLH-Net) to address locality problems without any other services. MLH-Net utilizes mobility features in a mobile environment. MLH-Net is constructed as two layers, an upper layer formed with super-nodes and a lower layer formed with normal-nodes. Because super-nodes can share advertisements, we can guarantee physical locality utilization between a requestor and a target during any discovery process. The simulation results demonstrate that the proposed scheme can reduce the discovery routing distance by 21 %, and 45 % compared with JXTA depending on the given number of max-hop.
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