CAJ | 학술논문

射频充电（ RFC）技术是一种通过基站发射射频电波为传感器节点补充电量的新兴技术。但在RFC无线传感器网络中，多基站同时发射能量时产生的能量干涉衰减现象会明显降低充电效率，此外，能量传输与数据通信共享信道会降低整个网络的吞吐量。针对上述问题，提出了RFC—MAC协议，为提高充电效率，将请求充电传感器节点周围的基站按距离分为两组，两组基站分时能量传输，以避免能量干涉衰减现象；传感器网络中设双信道，分别用于能量传输与数据通信，以提高网络的吞吐量。仿真结果表明：RFC—MAC协议显著提高了传感器节点的充电效率和平均网络吞吐量。
사빈충전（ RFC）기술시일충통과기참발사사빈전파위전감기절점보충전량적신흥기술。단재RFC무선전감기망락중，다기참동시발사능량시산생적능량간섭쇠감현상회명현강저충전효솔，차외，능량전수여수거통신공향신도회강저정개망락적탄토량。침대상술문제，제출료RFC—MAC협의，위제고충전효솔，장청구충전전감기절점주위적기참안거리분위량조，량조기참분시능량전수，이피면능량간섭쇠감현상；전감기망락중설쌍신도，분별용우능량전수여수거통신，이제고망락적탄토량。방진결과표명：RFC—MAC협의현저제고료전감기절점적충전효솔화평균망락탄토량。
Radio frequency charging(RFC)technology is an emerging technology that through base station emit RF waves to replenish power for sensor node. However,in RF charging( RFC)wireless sensor networks( WSNs), energy interference and attenuation caused by more than one base stations emitting energy at the same time can significantly reduce charging efficiency,moreover,energy transmission shares the channel with data communication can reduce network throughput. Aiming at above problems,put forward RFC—MAC protocols,ambient base stations of charging sensor node are classified into two groups,based on estimates of their separation distance from the energy requesting node to avoid phenomenon of energy interference decay as much as possible;set double channels in sensor networks for power transmission and data communications to improve network throughput. The simulation results show that RFC—MAC protocol can significantly improve charging efficiency of sensor node and average network throughput.