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Enhanced TDMA based MAC Protocol for Adaptive Data Control in Wireless Sensor Networks
Ahmad Naseem Alvi,Safdar Hussain Bouk,Syed Hassan Ahmed,Muhammad Azfar Yaqub,Nadeem Javaid,김동균 한국통신학회 2015 Journal of communications and networks Vol.17 No.3
In this paper, we propose an adaptive time division multiple access based medium access control (MAC) protocol, called bitmap-assisted shortest job first based MAC (BS-MAC), for hierarchical wireless sensor networks (WSNs). The main contribution of BS-MAC is that: (a) It uses small size time slots. (b) The number of those time slots is more than the number of member nodes. (c) Shortest job first (SJF) algorithm to schedule time slots. (d) Short node address (1 byte) to identify members nodes. First two contributions of BS-MAC handle adaptive traffic loads of all members in an efficientmanner. The SJF algorithm reduces node’s job completion time and to minimize the average packet delay of nodes. The short node address reduces the control overhead and makes the proposed scheme an energy efficient. The simulation results verify that the proposed BS-MAC transmitsmore data with less delay and energy consumption compared to the existing MAC protocols.