The Design And Implementation Of A Opportunity Networks-Based Distribute Storage System

With the rapid development of microelectronics technology and embedded technology, intelligent device has gained popularity, promoting the development of wireless ad-hoc network. In not fully connected network environment, Opportunity networks can communicate by means of nodes chance to meet,gained more and more attention from researchers in recent years.At present, research about Opportunity networks mostly focus on the network model and routing and distribution mechanism, rarely about resources storage. With dynamic characteristic, the node in the Opportunity networks can free access to the network. Some nodes carrying for scarce resources once leave the network, the resources will disappear. At the same time, a phenomenon of "hot spots" is existed.Nodes information in the network need storage, carry and forward. Relying on nodes’ initiative, the network require nodes not only gain resources, but also carry resources and forward the others. Due to selfish features, nodes in the Opportunity networks exist the problem of "Opportunity networks" and "free rider".In order to solve these problems, this paper research on the distributed storage strategy in Opportunity networks, on the basis of P2P network and Wireless sensor network and Opportunity networks. By means of increasing transcript, the network can improve the availability and reliability of the resources. Besides, we put forward incentive mechanism and credit model, by encouraging nodes consciously participate in carrying and forwarding resources of other nodes, to improve the performance of network.Finally, the function of distributed storage system is tested in the scenarios of Opportunity networks and verified on ONE simulation platform. The simulation and test results show that our distributed storage system can improve the network performance of Opportunity networks.