With the explosive growth of highspeed wireless data demand and the number of mobile devices, fog radio access networks(F-RAN) with multi-layer network structure becomes a hot topic in recent research. Meanwhile, due ...With the explosive growth of highspeed wireless data demand and the number of mobile devices, fog radio access networks(F-RAN) with multi-layer network structure becomes a hot topic in recent research. Meanwhile, due to the rapid growth of mobile communication traffic, high cost and the scarcity of wireless resources, it is especially important to develop an efficient radio resource management mechanism. In this paper, we focus on the shortcomings of resource waste, and we consider the actual situation of base station dynamic coverage and user requirements. We propose a spectrum pricing and allocation scheme based on Stackelberg game model under F-RAN framework, realizing the allocation of resource on demand. This scheme studies the double game between the users and the operators, as well as between the traditional operators and the virtual operators, maximizing the profits of the operators. At the same time, spectrum reuse technology is adopted to improve the utilization of network resource. By analyzing the simulation results, it is verified that our proposed scheme can not only avoid resource waste, but also effectively improve the operator's revenue efficiency and overall network resource utilization.展开更多
This paper introduces the background,illustrates the hardware structure and software features of malicious base station,explains its work principle,presents a method of detecting malicious base station,analyses the ex...This paper introduces the background,illustrates the hardware structure and software features of malicious base station,explains its work principle,presents a method of detecting malicious base station,analyses the experiment and evaluates the experimental results to verify the reliability of this method.Finally proposes the future work.展开更多
A novel Radio On Fiber(ROF) access is proposed and demonstrated which enables the pico-cell Base Station (BS) for high-speed wireless communications to eliminate external electric power supply facilities. We demonstra...A novel Radio On Fiber(ROF) access is proposed and demonstrated which enables the pico-cell Base Station (BS) for high-speed wireless communications to eliminate external electric power supply facilities. We demonstrated 2.4-GHz band radio signal transmission through the BS without external electric power supply. The electrical power used for BS circuit is feeded by optical power over optical fiber from central station.展开更多
为了解决基于蓝牙射频RSS的室内定位算法精度低、实时性差等问题,提出一种融合到达角(Angle of Arrival,AOA)与射频RSS的K近邻指纹定位算法,通过采集NRF51822传感器的射频RSS聚类信号形成定位指纹库,采用KNN欧式最优算法与指纹库进行匹...为了解决基于蓝牙射频RSS的室内定位算法精度低、实时性差等问题,提出一种融合到达角(Angle of Arrival,AOA)与射频RSS的K近邻指纹定位算法,通过采集NRF51822传感器的射频RSS聚类信号形成定位指纹库,采用KNN欧式最优算法与指纹库进行匹配得出近似坐标位置,设计一款小型PCB八木天线模拟定位基站,补偿射频RSS随距离、遮挡等造成的信号接收强度指示(Received Signal Strength Indicator,RSSI)跳变、衰减,通过信标与定位节点的AOA到达角与最优指纹数据的权值归一化换算,得出最终定位坐标。实验结果表明,该算法具有定位精度高、实时性好等优点,具有较高的推广价值。展开更多
基金supported in part by the National Natural Science Foundation of China (61771120)the Fundamental Research Funds for the Central Universities (N171602002)
文摘With the explosive growth of highspeed wireless data demand and the number of mobile devices, fog radio access networks(F-RAN) with multi-layer network structure becomes a hot topic in recent research. Meanwhile, due to the rapid growth of mobile communication traffic, high cost and the scarcity of wireless resources, it is especially important to develop an efficient radio resource management mechanism. In this paper, we focus on the shortcomings of resource waste, and we consider the actual situation of base station dynamic coverage and user requirements. We propose a spectrum pricing and allocation scheme based on Stackelberg game model under F-RAN framework, realizing the allocation of resource on demand. This scheme studies the double game between the users and the operators, as well as between the traditional operators and the virtual operators, maximizing the profits of the operators. At the same time, spectrum reuse technology is adopted to improve the utilization of network resource. By analyzing the simulation results, it is verified that our proposed scheme can not only avoid resource waste, but also effectively improve the operator's revenue efficiency and overall network resource utilization.
文摘This paper introduces the background,illustrates the hardware structure and software features of malicious base station,explains its work principle,presents a method of detecting malicious base station,analyses the experiment and evaluates the experimental results to verify the reliability of this method.Finally proposes the future work.
文摘A novel Radio On Fiber(ROF) access is proposed and demonstrated which enables the pico-cell Base Station (BS) for high-speed wireless communications to eliminate external electric power supply facilities. We demonstrated 2.4-GHz band radio signal transmission through the BS without external electric power supply. The electrical power used for BS circuit is feeded by optical power over optical fiber from central station.
文摘为了解决基于蓝牙射频RSS的室内定位算法精度低、实时性差等问题,提出一种融合到达角(Angle of Arrival,AOA)与射频RSS的K近邻指纹定位算法,通过采集NRF51822传感器的射频RSS聚类信号形成定位指纹库,采用KNN欧式最优算法与指纹库进行匹配得出近似坐标位置,设计一款小型PCB八木天线模拟定位基站,补偿射频RSS随距离、遮挡等造成的信号接收强度指示(Received Signal Strength Indicator,RSSI)跳变、衰减,通过信标与定位节点的AOA到达角与最优指纹数据的权值归一化换算,得出最终定位坐标。实验结果表明,该算法具有定位精度高、实时性好等优点,具有较高的推广价值。
