Improving energy consumption is major challenge in wireless sensor network (WSN). In this paper, we suggest a solution of this problem by introducing priority based media access control (MAC) protocol to transmit data among sensor nodes in the network. This priority based MAC protocol solves the problem of applications where critical data is sent first over the network than the other non critical data. This priority based MAC protocol uses modified IEEE 802.15.4 beacon frame. We add priority bit in beacon frame, by setting this bit we decide which data is critical. We propose a solution by introducing a protocol which is Energy consumption improvement by priority (ECIP-MAC) protocol. Whenever all sensor nodes send their data to base station, the base station can easily recognize which data is to be critical according to their priority bit. If we receive more than one same priority bit by different sender nodes, at this situation we apply priority based algorithm to remove this type of problems.

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Wireless sensor network (WSN) Medium access control (MAC) Energy efficiency ECIP-MAC (Energy Consumption Improvements by Priority MAC) protocol FCFS (First come first serve)