Abstract
A multi-optimal nodes data storage scheme (MODS) is firstly presented in this paper, where multiple optimal nodes are chosen as the storage nodes and both factors mentioned above are considered in the choice of optical sensor nodes. Information brokerage in optical sensor networks (OSNs) involves that producers send the acquired data to some storage nodes, which serve as data caches. Consumers get required data by sending queries to these storage nodes. The storage and process of sensing data, called as data-centric networks, have been becoming one of import research issues of OSNs. As for traditional method, two factors were not considered for the choice of storage nodes: the rate of generating data of producers and the frequency of sending request of consumers. Analysis results show that MODS can not only prolong the life time but also balance the cost of the sensor nodes.
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