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In this paper, we propose a new Medium Access Control (MAC) protocol for Wireless Sensor Networks (WSNs) called MMSMAC (Multi-Mode Sensor MAC protocol), which can operate and switch among three modes: synchronous, asynchronous, and hybrid, according to the application requirements. In the synchronous mode, MMSMAC organizes the sensor nodes under even and odd clusters. Each sensor node has its own...
Modern wearable system requires users to transmit their own information of exact location and physical characteristics timely. It is required to reduce the network delay and excessive energy consumption, which are caused by network code in wearable WSNs. A fast random linear mechanism of network coding based on nodes collaboration is introduced. Energy consumption of nodes is reduced by transmitting...
An improved medium access control algorithm based on energy conservation is proposed in this paper because the energy is constrained in wireless sensor network. In this algorithm, each code can adjust its sleeping probability by its remaining energy, balance energy consumption of net codes, so the life time of whole network is enlarging. The simulating result shows that comparing with traditional...
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