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"A Novel Hybrid Access Point Channel Access Method for Wireless Powered" by Xiaoyu Song and Kwan Wu Chin

Abstract
This paper considers data collection in a wireless powered Internet of Things (IoT) network. Specifically, it addresses the novel problem of determining the mode of each time slot, where a Hybrid Access Point (HAP) needs to decide whether to charge or collect data from devices. Also, in data time slots, the HAP has to decide on a device for data transmission. To this end, we outline an Integer Linear Program (ILP) to determine the mode and the transmitting device over a given planning time horizon. We also propose a rolling horizon approach that uses a Gaussian Mixture Model (GMM) to estimate channel gains. Our results indicate that the amount of data collected by the HAP is affected by its charging power, distance between the HAP and each device, number of devices and planning horizon length. The rolling horizon approach allows the HAP to collect 740% more data as compared to competing approaches. ....

Integer Linear Program , Hybrid Access Point , Gaussian Mixture Model , முழு நேரியல் ப்ரோக்ர்யாம் , கலப்பு நுழைவு பாயஂட் ,

"Data Collection in Radio Frequency (RF) Charging Internet of Things Ne" by Hang Yu and Kwan Wu Chin

Abstract
This paper considers minimizing the time required to collect L bits from each Radio Frequency (RF)-energy harvesting device serviced by a multi-antenna Hybrid Access Point (HAP). We outline a Mixed Integer Non-Linear Program (MINLP) to determine the transmit power allocation of the HAP and devices over multiple time slots. We also outline a Receding Horizon Control (RHC) approach coupled with a Gaussian Mixture Model (GMM) to optimize the transmit power allocation of the HAP. Our results show that the performance of our approach is within 5% of the optimal solution.
Open Access Status ....

Linear Program , Radio Frequency , Hybrid Access Point , Mixed Integer Non Linear Program , Receding Horizon Control , Gaussian Mixture Model , F Charging , Wireless Power Transfer , நேரியல் ப்ரோக்ர்யாம் , வானொலி அதிர்வெண் , கலப்பு நுழைவு பாயஂட் , கலப்பு முழு அல்லாத நேரியல் ப்ரோக்ர்யாம் ,