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access icon free Energy efficient policy selection in wireless sensor network using cross layer approach

© The Institution of Engineering and Technology
Received 05/03/2017, Accepted 31/07/2017, Revised 26/07/2017, Published 02/08/2017

The authors have addressed the issue of energy saving in packet retransmission by reducing the packet loss in the first attempt. They have formulated the problem as Markov decision process and mapped the system into various states based on system dynamics like channel gain, buffer space, battery energy and harvested energy. In wireless sensor network, adaptive policy management is the best approach to work out with the variation of system states in a dynamically changing environment. The policies are defined regarding various controllable parameters like transmission power, modulation scheme, and transmission rate. The solution is sought regarding best policy selection as per the individual state of the system. They have evaluated the performance of the proposed optimum transreceiver scheme by extensive simulations with existing schemes like optimum energy allocation, adaptive modulation and adaptive power management for the various performance metrics like net bit rate and energy consumption in retransmission of packets for different system states.

Inspec keywords: telecommunication power management; wireless sensor networks; adaptive modulation; Markov processes

Other keywords: packet loss; performance metrics; energy efficient policy selection; adaptive policy management; battery energy; optimum energy allocation; channel gain; transmission rate; buffer space; Markov decision process; dynamically changing environment; harvested energy; modulation scheme; wireless sensor network; cross layer approach; transmission power; packet retransmission; adaptive modulation; adaptive power management; energy saving

Subjects: Wireless sensor networks; Modulation and coding methods; Markov processes

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