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In this paper, a novel variable rate based time frame scheduling scheme is proposed to further reduce collisions and improve energy saving in wireless sensor networks. The MAC combines CSMA and TDMA functionalities, while obviating their shortcomings. After being assigned, slot 0 is preserved as the pre-schedule slot to inform neighbor nodes the schedule of the senders. During this pre-schedule slot,...
In this paper, we propose a novel local framing pre-schedule scheme to improve energy saving in CSMA/TDMA hybrid MAC layer of wireless sensor network. This MAC combines CSMA and TDMA functionalities together, while obviates their shortcomings. Usually, in a hybrid CSMA/TDMA MAC such as ZMAC, all the receivers have to perform low power listening all the time to wait for in-coming data. Although low...
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