Wireless sensors network (WSN) is widely used in the Internet of Things at present. However, limited energy source is a critical\nproblem in the improvement and practical applications of WSN, so it is necessary to improve the energy efficiency. As another\nimportant evaluation criterion of transmission performance, throughput should be improved too. Tomitigate both of the problems\nat the same time, by taking the advantages of Time DivisionMultiple Access (TDMA) and Carrier SenseMultiple Access (CSMA) at\nthemedium access control (MAC) layer ofWSN, we propose a hybrid TDMA/CSMAMAC layer protocol.Meanwhile, we design a\nnovel power control scheme to further reduce the energy consumption and optimize the transmission slots. The simulation results\ndemonstrate that the proposed protocol significantly improves the throughput and energy efficiency.
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