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

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崇高概念，并提出了一种管理时间、射频和空间的自适应无线操作系统。此外，我们还提出了处理模型、实现模型和计算模型，以评估其在以下方面的有效性：1）保持网络连接的方法，即使接入点发生变化，2) 的方法保证应用程序请求的 QoS，以及 3）一种估计无线网络流量吞吐量的方法。为了评估天线子系统（自适应和动态空间频率分配的关键组件）的基本性能，以下内容已提出并研究了以下问题：1）用于高效瞬时方法的新混合算法，2）基于脉冲无线电的 UWB 系统，包括人手阴影对短距离 UWB 传输的影响系统，3）用于宽带无线局域网系统的平衡馈电双频内置天线，4）电场探头介电外壳的设计方法，5）人体等效体模和比例模型应用，6）DOA估计，包括效果无线局域网基站金属外壳漏电流的研究，7）三正交天线结合天线方向传感器的新位置估计方法，8）新型多天线自适应馈电系统位于液晶显示器的金属框架上，9）用于数字地面广播系统的对称和非对称型耳机天线。面向无线的操作系统的新功能加上自适应和动态空间频率分配可以被视为关键技术之一用于未来基于 IP 的无线通信的高效空间资源管理。