针对当前无线网络中一些节点超载而另外一些节点处于轻载的问题,引入了SDN(software defined networking,软件定义网络).并根据物理学中连通器水压的原理提出了一种改进后的动态负载感知扩散算法,该算法很好地利用了节点所处负载环境这...针对当前无线网络中一些节点超载而另外一些节点处于轻载的问题,引入了SDN(software defined networking,软件定义网络).并根据物理学中连通器水压的原理提出了一种改进后的动态负载感知扩散算法,该算法很好地利用了节点所处负载环境这个信息,在负载迁移过程中进行了有效地收敛.通过Linux下的mininet-wifi平台搭建了系统模型,对其进行了仿真实验分析.仿真试验结果证明该扩散算法有效地减小了往返时延,提高了网络吞吐量,降低了能耗,解决了网络拥塞问题.展开更多
This paper describes a new silicon physical unclonable function （PUF） architecture that can be fabri- cated on a standard CMOS process. Our proposed architecture is built using process sensors, difference amplifier,...This paper describes a new silicon physical unclonable function （PUF） architecture that can be fabri- cated on a standard CMOS process. Our proposed architecture is built using process sensors, difference amplifier, comparator, voting mechanism and diffusion algorithm circuit. Multiple identical process sensors are fabricated on the same chip. Due to manufacturing process variations, each sensor produces slightly different physical charac- teristic values that can be compared in order to create a digital identification for the chip. The diffusion algorithm circuit ensures further that the PUF based on the proposed architecture is able to effectively identify a population of ICs. We also improve the stability of PUF design with respect to temporary environmental variations like temperature and supply voltage with the introduction of difference amplifier and voting mechanism. The PUF built on the proposed architecture is fabricated in 0.18 μm CMOS technology. Experimental results show that the PUF has a good output statistical characteristic of uniform distribution and a high stability of 98.1% with respect to temperature variation from -40 to 100 ℃, and supply voltage variation from 1.7 to 1.9 V.展开更多
文摘针对当前无线网络中一些节点超载而另外一些节点处于轻载的问题,引入了SDN(software defined networking,软件定义网络).并根据物理学中连通器水压的原理提出了一种改进后的动态负载感知扩散算法,该算法很好地利用了节点所处负载环境这个信息,在负载迁移过程中进行了有效地收敛.通过Linux下的mininet-wifi平台搭建了系统模型,对其进行了仿真实验分析.仿真试验结果证明该扩散算法有效地减小了往返时延,提高了网络吞吐量,降低了能耗,解决了网络拥塞问题.
基金Project supported by the National Natural Science Foundation of China(No.61376031)
文摘This paper describes a new silicon physical unclonable function （PUF） architecture that can be fabri- cated on a standard CMOS process. Our proposed architecture is built using process sensors, difference amplifier, comparator, voting mechanism and diffusion algorithm circuit. Multiple identical process sensors are fabricated on the same chip. Due to manufacturing process variations, each sensor produces slightly different physical charac- teristic values that can be compared in order to create a digital identification for the chip. The diffusion algorithm circuit ensures further that the PUF based on the proposed architecture is able to effectively identify a population of ICs. We also improve the stability of PUF design with respect to temporary environmental variations like temperature and supply voltage with the introduction of difference amplifier and voting mechanism. The PUF built on the proposed architecture is fabricated in 0.18 μm CMOS technology. Experimental results show that the PUF has a good output statistical characteristic of uniform distribution and a high stability of 98.1% with respect to temperature variation from -40 to 100 ℃, and supply voltage variation from 1.7 to 1.9 V.
