The Optimal Control Policy for Point-to-Point Wireless Body Area Network Based on Simultaneous Time-Ratio and Transmission Power Allocation

Abstract

In this paper, we propose an optimal control policy based on time-ratio and transmission power allocation in wireless body area networks (WBANs), where the duty cycle is adopted. For the purpose of maximizing the information throughput, the whole duty cycle is divided into two states: sleep state and active state. During the sleep state, in order to transmit information from senor, the energy harvested in the sensor must exceed a certain threshold. In the active state, the process of transmitting information by the sensor will cause interference to energy harvesting. To get to a more reasonable and convictive optimization goal, we optimize the duty-cycle time-ratio of sleep and active states and transmission power in active state simultaneously in the system. The simulation results show that the information throughput is improved significantly when the proposed control policy is considered. INDEX TERMS Wireless body area networks (WBANs), duty cycle, energy harvesting, optimal control policy.

Optimal Dynamic Resource Allocation for Multi-Point Communication in WBAN

“…Due to the characteristics of WBAN, we must ensure the safety of the human body in the setting of parameters. Therefore, the setting of our simulation parameters is referred to [12]. In the body surface channel of the body area network, P L = 56.1dB, n = 5.8, d 0 = 10cm represents the reference distance, d 1 = 25cm represents the distance between AP and S 1 , and d 2 = 35cm, represents the distance between AP and S 2 .…”

“…On this basis, an adaptive maximum ratio combining (MRC) protocol is proposed. In [12], the authors study the control strategy of optimizing time and power simultaneously, and optimize the duty cycle and transmission power to achieve the optimal state.…”

Algorithm for energy consumption minimisation in wireless sensor network

“…Pak et al discussed a tier-based any cast protocols and also gave the solution for the routeing control overhead and multiple relays in the routeing [26]. In 2019, WSN optimal control policy for body area network was presented to optimise the duty-cycle based on time-ratio and transmitter power allocation by Ling et al [27]. A fuzzy-based energy effective protocol is proposed by Pau et al [28] and Jain et al [29].…”