Energy-Efficient Secure Transmission for Wireless Powered Internet of Things With Multiple Power Beacons

Wang, Yida; Yang, Weiwei; Shang, Xiaohui; Hu, Jianwei; Huang, Yuzhen; Cai, Yueming

doi:10.1109/access.2018.2883143

Cited by 24 publications

(33 citation statements)

References 51 publications

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“…Furthermore, in this paper, all the channels experience Rayleigh fading, which has been commonly considered to be the special case of Rician fading under the situation that the line-of-sight component is assumed to be zero. Meanwhile, it is usually adopted in works that investigating the secrecy performance of WPSNs [31][32][33]43], because it can be seen as the foundation for exploring the more practical Rician fading circumstance. It is considered that the additive white Gaussian noise (AWGN) at destination has zero mean and variance N 0 .…”

Section: System Modelmentioning

confidence: 99%

“…The so-called activation threshold means that when the input power of the EH circuit is lower than the threshold value, it will always be inactive, resulting in the device unable to transmit information. On the contrary, it can turn on the energy harvester and provide continuous power for the normal transmission of information [33,38]. Specifically, for the considered WPSNs, the nonlinearity of EH has an important impact on the secrecy performance of the system.…”

Section: Introductionmentioning

confidence: 99%

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Secrecy Performance Analysis of Wireless Powered Sensor Networks Under Saturation Nonlinear Energy Harvesting and Activation Threshold

Shang

Yin

Wang

et al. 2020

Sensors

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In this paper, we investigate the impact of saturation nonlinear energy harvesting (EH) and activation threshold on the multiuser wireless powered sensor networks (WPSNs) from the physical layer security (PLS) perspective. In particular, for improving the secrecy performance, the generalized multiuser scheduling (GMS) scheme is exploited, in which the Kth strongest sensor is chosen based on the legitimate link. For evaluating the impact of various key parameters on the security of system, we obtain the exact closed-form expressions for secrecy outage probability (SOP) under linear EH (LEH), saturation nonlinear EH (SNEH) and saturation nonlinear EH with activation threshold (SNAT), respectively, and solve the maximization problem of secure energy efficiency (SEE). Simulation results demonstrate that: (1) the number of source sensors, the EH efficiency and the transmit power of power beacon (PB) all have positive impact on SOP, and the smaller generalized selection coefficient is advantageous for secrecy performance; (2) LEH is an ideal situation for SNEH when the saturation threshold is large enough and SNEH is a special situation for SNAT when the activation threshold is low enough; (3) the time-switching factor and the activation threshold both have an important impact on the secrecy performance, which are worth considering carefully.

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Section: System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Secrecy Performance Analysis of Wireless Powered Sensor Networks Under Saturation Nonlinear Energy Harvesting and Activation Threshold

Shang

Yin

Wang

et al. 2020

Sensors

Self Cite

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“…Dedicated chargers with fixed positions and omni-directional antennae are placed across the network to continuously transmit power to the nodes. A number of solutions for the charger placement problem while taking into account the electromagnetic radiation activity is, also, proposed in the literature [7], [8], [9]. However, all the previous works consider only 2-dimensional charger deployments and a non-realistic high-power omni-directional energy emission.…”

Section: Related Workmentioning

confidence: 99%

Optimal placement of drones for fast sensor energy replenishment using wireless power transfer

Caillouet¹,

Razafindralambo²,

Zorbas³

2019

2019 Wireless Days (WD)

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Lifetime is the main issue of wireless sensors networks. Since the nodes are often placed in inaccessible places, the replacement of their battery is not an easy task. Moreover, the node maintenance is a costly and time consuming operation when the nodes are high in numbers. Energy harvesting technologies have recently been developed to replenish part or all of the required energy that allows a node to function. In this paper, we use dedicated chargers carried by drones that can fly over the network and transmit energy to the nodes using radio-frequency (RF) signals. We formulate and optimally solve the Optimal Drone Placement and Planning Problem (OD3P) by using a given number of flying drones, in order to efficiently recharge wireless sensor nodes. Unlike other works in the literature, we assume that the drones can trade altitude with coverage and recharge power, while each drone can move across different positions in the network to extend coverage. We present a linear program as well as a fast heuristic algorithm to meet the minimum energy demands of the nodes in the shortest possible amount of time. Our simulation results show the effectiveness of our approaches for network scenarios with up to 50 sensors and a 50 × 50m terrain size.

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“…Although the harvested energy from RF signals appears to be inefficient and the WPC-based wireless communication seems to be not widely available at the current stage, practical applications for power-constrained devices of IoT have already been investigated, and more feasible applications will be implemented in the near future [6][7][8]. Until now, a lot of research efforts have also been devoted to explore the advantages of WPC in most applications of IoT since it could be easily combined with wireless terminals [9][10][11][12][13]. Specifically, typical wirelesspowered communication networks (WPCN) were investigated in [9], where introduction of a dynamic time division multiple access (TDMA) protocol was performed for a multiuser WPCN, and the best time allocation for the downlink WPC and the uplink wireless information transmission (WIT) had been analyzed.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the authors in [12] analyzed the secrecy performance of the EH sensor system and proposed a best-relay-and-best-jammer protocol for enhancing the secrecy of a system with the source user and multiple sensor relays harvesting energy from diverse PBs. Recently, inspired by abovementioned works, a secure energy-efficient transmission design for wireless-powered IoT possessing various PBs was investigated in [13], where the authors introduce different relay selection schemes possessing the optimal PB under the selection of the single source and solve the optimization problem of secure energy efficiency (SEE). It is worth mentioning that above works mostly focused on the secrecy performance improvement contributed by relay selection, while ignored the practical scenario with multiusers, which can be considered as the typical application of IoT.…”

Section: Introductionmentioning

confidence: 99%

Secure Green-Oriented Multiuser Scheduling for Wireless-Powered Internet of Things

Shang

Yin

Liu

et al. 2020

Wireless Communications and Mobile Computing

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In this paper, we consider the secure green-oriented multiuser scheduling for the wireless-powered Internet of Things (IoT) scenario, in which multiple source sensors communicate with a controller assisted by an intermediate sensor with the existence of a passive tapping device. Due to the limited energy, all sensors must acquire energy from external power beacons (PBs). Specifically, for the security improvement, we introduce two multiuser scheduling schemes possessing the optimal PB chosen by the relay, i.e., the best source sensor is scheduled in a random way (BSR), while the best source sensor is decided by the best PB (BSBP). Furthermore, for every scheme, we derive the analytical expressions for the secrecy outage probability (SOP) and investigate the secure energy efficiency (SEE) optimization problem with constricted transmission power in PBs. Simulation results reveal that the BSBP scheme provides better secrecy performance, and elevating the PBs quantity or reducing both the ratio of distance from PBs to source users and the total communication distance to some extent is helpful for improving SEE. In addition, the time-switching factor shows an important effect upon secrecy performance of the considered system.

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Energy-Efficient Secure Transmission for Wireless Powered Internet of Things With Multiple Power Beacons

Cited by 24 publications

References 51 publications

Secrecy Performance Analysis of Wireless Powered Sensor Networks Under Saturation Nonlinear Energy Harvesting and Activation Threshold

Secrecy Performance Analysis of Wireless Powered Sensor Networks Under Saturation Nonlinear Energy Harvesting and Activation Threshold

Optimal placement of drones for fast sensor energy replenishment using wireless power transfer

Secure Green-Oriented Multiuser Scheduling for Wireless-Powered Internet of Things

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