标题： 基于模糊逻辑趋势的智能切换在IEEE802.11移动IPv6网络中 显示英文标题

标题： Smart handover based on fuzzy logic trend in IEEE802.11 mobile IPv6 networks

摘要： 一个设计合理的切换算法在移动节点跨越小区边界时对于减少连接质量恶化至关重要。 因此，为了提高通信质量，我们在论文中确定了三个目标。 第一个目标是通过使用额外参数来减少由于多径和阴影效应导致的RSSI读数的误报，从而最小化不必要的切换并提高通信质量。 第二个目标是通过利用位置因素作为模糊逻辑切换算法中的一个输入参数，根据用户移动性来控制切换决策。 第三个目标是通过在做出切换决策前监测模糊逻辑输出的趋势，以最小化由于参数突然波动引起的错误切换警报。 在本文中，我们通过模糊逻辑使用RSSI、速度和距离作为切换触发算法的输入决策标准。 在触发切换之前，会监测模糊逻辑输出的趋势一段时间。 最后，通过仿真，我们展示了所提出的切换算法在实现更好通信质量方面的有效性。 显示英文摘要

摘要： A properly designed handoff algorithm is essential in reducing the connection quality deterioration when a mobile node moves across the cell boundaries. Therefore, to improve communication quality, we identified three goals in our paper. The first goal is to minimize unnecessary handovers and increase communication quality by reducing misrepresentations of RSSI readings due to multipath and shadow effect with the use of additional parameters. The second goal is to control the handover decisions depending on the users' mobility by utilizing location factors as one of the input parameters in a fuzzy logic handover algorithm. The third goal is to minimize false handover alarms caused by sudden fluctuations of parameters by monitoring the trend of fuzzy logic outputs for a period of time before making handover decision. In this paper, we use RSSI, speed and distance as the input decision criteria of a handover trigger algorithm by means of fuzzy logic. The fuzzy logic output trend is monitored for a period of time before handover is triggered. Finally, through simulations, we show the effectiveness of the proposed handover algorithm in achieving better communication quality.