Abstract
Objectives: To design a transmission power control (TPC) algorithm for the Internet of Things (IoT) based Wireless Sensor Networks (WSN) such that the energy cost is reduced and the expected throughput is increased. Method: In this study, a Game theory based adaptive transmit power control (GT-ATPC) algorithm for IoT-WSN is proposed. In this algorithm, for each sender, the initial transmission power level (TPL) is determined from the difference of Received Signal Strength (RSS) measurements at the base station (BS). The TPL is adaptively adjusted by means of Game theory. For each sender, the expected throughput, energy cost and connectivity values are estimated from which a utility function is derived. Findings: By simulation results, it has been shown that GT-ATPC attains 37% higher throughput with 57% reduced energy cost and 30% lesser overhead when compared with GTS-PM approach. Novelty: The TPL of a node is adjusted based on the estimated values of utility function such that the throughput and connectivity is high and energy cost is less. Keywords: Internet of Things (IoT); wireless sensor network (WSN); transmission power; Energy cost; game theory; utility function
Highlights
The Internet of Things (IoT) is a system of several things which allows a unified movement among such physical stuff [1,2]
This study proposes Game theory based adaptive transmit power control (GT-Adaptive Transmission Power Control (ATPC)) algorithm for IoT-Wireless Sensor Networks (WSN)
The transmit power level (TPL) is adaptively adjusted by means of Game theory
Summary
The Internet of Things (IoT) is a system of several things which allows a unified movement among such physical stuff [1,2]. As a substitute to use extremely accessible broadcast power for every sensor node, it should regulate its broadcast power to the desired level for attaining a dependable communication network [3,4]. As the detecting expedients are battery-powered, a lowpower scheme is the chief requisite. Since IoT devices have low power and have lossy communication channels[7], a Transmission power control (TPC) is one of the mechanisms used to enhance the lifetime of a sensor node. In TPC, the transmit power level (TPL) is adaptively adjusted based on the channel conditions[8]. Apart from channel condition metrics like Received Signal Strength Indicator (RSSI) and Packet Reception Rate (PRR), the expected throughput and connectivity metrics need to be considered during TPC
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