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Short contact time period between nodes as well as limited node buffers usually exist in opportunistic networks, resulting in the increase of delay and the loss of data packets. To address the problem, an improved epidemic routing algorithm(Reliable and Efficient routing algorithm assisted with Buffer Management, REBM) is proposed. Firstly, through the exchange of SV (Summary Vector) control packets,...
A key problem in research on Wireless Sensor Networks (WSNs) is how to improve energy efficiency and extend the lifetime of sensor nodes and therefore the WSNs. In this paper, we address this problem and present a geography–based heterogeneous hierarchy routing (GBHHR) protocol. GBHHR adopts hierarchy structure for better data congregation, which can improve the efficiency of data collection and uses...
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