Simulation System for Performance Evaluation of Autonomous Distributed Wireless Ad Hoc Information Networks

自主分布式无线自组织信息网络性能评估仿真系统

基本信息

批准号：
12555110
负责人：
YOSHIDA Susumu
金额：
$ 8万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

项目摘要

With a recent trend to embed huge number of wireless transceiver chips to every device and equipment in daily life, study of an autonomous distributed wireless ad hoc networking is getting more and more important. A flexible simulation system for the performance evaluation of such autonomous wireless networks has been implemented to study fundamental problems indispensable for its design, such as spectrally efficient relaying scheme, routing issue and location management. Major research results obtained through the project are summarized below.1. Spectral efficiency and terminal power consumption of ad hoc networks were studied and compared with those of cellular system. We found that an optimum hop distance exists assuring the maximum number of simultaneous routes, and power consumption is comparable to the cellular system.Routing scheme is modified so that it is applicable to the non-uniform terminal distribution case.2. A hierarchical routing protocol for ad hoc networks has been proposed and its performance has been evaluated by computer simulations. It is based on CBRP (Cluster Based Routing Protocol) and finds more robust routes by utilizing location and velocity information.3. A destination discovery scheme has been proposed assuming a city-wide wireless multi-hop network and its performance has been evaluated by computer simulations. A mobile station tries to find its destination using the location information, which is collected and kept by sparsely scattered simple fixed stations.4. An experimental multi-hop network consisting of notebook PC's is implemented using IEEE802. 11b wireless LAN cards and its throughput is evaluated. By reducing the transmitter power and introducing multi-hop connection, total throughput is found to increase owing to the spatial frequency reuse.

随着最近将大量无线收发器芯片嵌入日常生活中的每个设备和设备的趋势，研究自动分布式无线临时网络的研究越来越重要。已经实施了用于对此类自主无线网络进行性能评估的灵活仿真系统，以研究其设计必不可少的基本问题，例如光谱有效的继电器方案，路由问题和位置管理。通过该项目获得的主要研究结果总结为1。研究了临时网络的光谱效率和终端功耗，并将其与细胞系统的光谱效率和终端功耗进行了比较。我们发现，存在最佳的HOP距离，以确保同时路由的最大数量，并且功耗与蜂窝系统相当。透射方案已修改，以便它适用于非均匀的终端分配情况。2。已经提出了针对临时网络的分层路由协议，并通过计算机模拟对其性能进行了评估。它基于CBRP（基于群集的路由协议），并通过利用位置和速度信息来找到更多健壮的路由3。已经提出了一个目的地发现方案，假设城市范围内的无线多跳网络，并且通过计算机模拟对其性能进行了评估。移动站试图使用位置信息来找到其目的地，该信息由稀疏分散的简单固定站收集和保存。4。使用IEEE802实现了由笔记本电脑PC组成的实验多跳线网络。评估了11B无线LAN卡及其吞吐量。通过降低发射器功率并引入多跳连接，由于空间频率重复使用，总吞吐量会增加。