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Environmental Adaptive Active Scheduling System for Frequency sharing Wireless networks

频率共享无线网络环境自适应主动调度系统

基本信息

批准号：
15300024
负责人：
MAEDA Tadahiko
金额：
$ 9.66万
依托单位：
Ritsumeikan University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

The role of Operating Systems in the wireless communication has been investigated and a noble concept of Wireless oriented Operating system has been proposed. Also, we proposed an adaptive wireless-oriented operating system which manages time, radio frequency and space. It can solve problems such as the shortage of radio spectrum, degradation of QoS, and degradation of security level of wireless communications. Furthermore we presented processing models, implementation models, and a calculation model to evaluate its effectiveness in terms of : 1)a method for keeping network connection, even if access point is changed, 2)a method for guaranty of QoS requested from applications, and 3)a method for estimation of throughput of wireless network traffic.In order to assess the basic performance of Antenna sub-system, which is the key component for the Adaptive and Dynamic Spatial Frequency Allocation, the following issues have been proposed and investigated : 1)New hybrid algorithms for effic … More ient moment method, 2)Impulse Radio based UWB systems including the effects of human hands shadowing for short range UWB transmission systems, 3)Balanced fed dual-band built-in antenna for wideband wireless LAN systems, 4)Design method on the dielectric casing for Electric field probe, 5)Human equivalent phantom and scale-model applications, 6)DOA estimation including the effects of the leakage current on the metallic case of Wireless LAN base station, 7)New location estimation method with three orthogonal antennas combined with antenna direction sensors, 8)New self-adaptive feeding system for multiple antenna located on the metallic frame of Liquid Crystal Display, 9)Symmetric and Asymmetric type Earphone antennas for Digital Terrestrial Broadcasting systems.The new feature of Wireless-oriented Operating System coupled with Adaptive and Dynamic Spatial Frequency Allocation can be seen as one of the key technologies for the efficient spatial resource management of the future IP based wireless communications. Less

本文研究了操作系统在无线通信中的作用，提出了面向无线的操作系统的概念。此外，我们提出了一个自适应的无线面向操作系统，管理时间，无线电频率和空间。它可以解决无线频谱资源短缺、服务质量下降、无线通信安全等级下降等问题。此外，我们提出了处理模型，实施模型和计算模型，以评估其有效性：1）即使接入点改变也保持网络连接的方法，2）保证从应用请求的QoS的方法，以及3）估计无线网络业务的吞吐量的方法。该算法是自适应动态空间频率分配的关键部分，本文主要研究了以下问题：1）新的有效空间频率分配混合算法， ...更多信息瞬时矩方法，2）基于脉冲无线电的UWB系统，包括用于短距离UWB传输系统的人手遮蔽效应，3）用于宽带无线LAN系统的平衡馈电双频内置天线，4）用于电场探针的介电外壳的设计方法，5）人体等效体模和比例模型应用，6）包括泄漏电流对无线LAN基站的金属外壳的影响的DOA估计，7）结合天线方向传感器的三个正交天线的新的位置估计方法，8）液晶显示器金属框架上多天线的新型自适应馈电系统，9）数码地面广播系统的对称及非对称式耳机天线。面向操作系统的自适应动态空间频率分配技术是未来IP空间资源高效管理的关键技术之一基于无线通信。少