An Energy Efficient MAC Protocol for WSNs

Polling as one kind of the TDMA medium access control protocols has the advantage of energy conservation, however, its extensibility is not as good as that of contention-based protocol. The controllable threshold polling medium access protocol (CTP-MAC) in this paper is designed to realize the self-organizing in slot assignment and synchronization. Methods of the imbedded Markov-chain theory and the probability generating function are used to propose an analysis model of energy efficient for wireless sensor network. Mathematic analyses are compared with the simulations results.