CRAWDAD gatech/vehicular (v. 2006-03-15)

Abstract This dataset contains the measurement of the performance of short range communications between vehicles and between vehicle and roadside station.last modified : 2006-11-14reason for most recent change : the initial versionrelease date : 2006-03-15date/time of measurement start : 2005-01-24date/time of measurement end : 2005-04-23website : www-static.cc.gatech.edu/~mpalekar/Vehicular_Networks.htmnetwork type : Vehicular network,802.11 ad-hoccollection environment : The experiments were conducted in the northwest sector of Atlanta, GA along I-75 between Exit 250 and Exit 255 as shown in the figure in the README files in the traces. This section of I-75 corridor has five regular lanes in addition to one HOV lane in most parts of the study area. Vehicle traffic in the opposite directions is separated by a concrete median barrier. All the experiments were conducted between 2pm and 5pm under non-congested traffic conditions and non-inclement weather conditions.network configuration : For the experiments, laptop computers running Red Hat Linux 9, an ORINOCO 802.11b gold card with a 2.5dB omni-directional external antenna placed on the roof of the vehicle, and a Garmin 72 GPS receiver (with WAAS correction). The wireless cards configured in IBSS ad-hoc mode with power management turned off and a fixed data rate. The GPS reports latitude, longitude, speed, and heading of the vehicle every 2 seconds. The location information reported by GPS has an accuracy of 5-7 meters. We obtained location information every second through interpolation. All experiments were conducted using broadcast at 2Mbps that allows us to explore basic communication performance because there is no RTS/CTS/ACK and retransmissions.data collection methodology : IPerf, a network performance measurement tool was used along with the GPS readings to in conjunction with GPS readings to measure network performance. Both sender and receiver log time, location, velocity (from GPS), data packets received / sent, and signal quality.Performance measurement of a short range communications between vehicle and roadside traffic.TracesSee note in the parent traceset (gatech/vehicular/v2r)See note in the parent traceset (gatech/vehicular/v2r)See note in the parent traceset (gatech/vehicular/v2r)See note in the parent traceset (gatech/vehicular/v2r)Performance measurement of a short range communications between vehicle to vehicle.TracesSee note in the parent traceset (gatech/vehicular/v2v)See note in the parent traceset (gatech/vehicular/v2v)

摘要 本数据集包含车辆间以及车辆与路边基站间的短距离通信性能测量数据。
最后修改时间：2006年11月14日
最近一次更新原因：初始版本发布
发布日期：2006年3月15日
测量开始时间：2005年1月24日
测量结束时间：2005年4月23日
相关网址：www-static.cc.gatech.edu/~mpalekar/Vehicular_Networks.htm
网络类型：车联网（Vehicular network）、802.11自组织网络
实验环境：实验于美国佐治亚州亚特兰大市西北区段的I-75高速公路开展，路段范围为250号出口至255号出口，具体布局详见数据追踪文件中README文档的配图。该段I-75高速多数路段设有5条常规车道与1条高占用车辆车道（High-Occupancy Vehicle, HOV），双向车流由混凝土中央分隔带隔离。所有实验均于每日14时至17时之间开展，实验时段交通非拥堵且天气状况良好。
网络配置：本次实验使用的硬件设备包括运行Red Hat Linux 9操作系统的笔记本电脑、安装于车辆车顶的ORINOCO 802.11b黄金版无线网卡（搭配2.5dB全向外置天线），以及Garmin 72型全球定位系统（Global Positioning System, GPS）接收机（支持广域增强系统（Wide Area Augmentation System, WAAS）差分修正）。无线网卡配置为IBSS自组织模式，关闭电源管理功能并固定数据传输速率。GPS接收机每2秒上报车辆的纬度、经度、行驶速度与航向，其定位精度为5至7米。我们通过插值算法每秒获取一次位置信息。所有实验均采用2Mbps速率的广播模式开展，该模式无请求发送/清除发送/确认帧（Request To Send/Clear To Send/Acknowledgement, RTS/CTS/ACK）握手机制与重传机制，可用于探究基础通信性能。
数据采集方法：实验采用网络性能测量工具IPerf结合GPS读数开展数据采集。发送端与接收端均记录时间戳、位置信息、（来自GPS的）行驶速度、收发数据包数量以及信号质量。
车辆与路边基站间的短距离通信性能测量。
追踪数据：详见父追踪数据集gatech/vehicular/v2r的注释。详见父追踪数据集gatech/vehicular/v2r的注释。详见父追踪数据集gatech/vehicular/v2r的注释。详见父追踪数据集gatech/vehicular/v2r的注释。
车辆间的短距离通信性能测量。
追踪数据：详见父追踪数据集gatech/vehicular/v2v的注释。详见父追踪数据集gatech/vehicular/v2v的注释。

搜集汇总

背景与挑战

背景概述

该数据集测量了车辆间及车辆与路边站之间的短程通信性能，数据于2005年在亚特兰大I-75走廊收集，使用802.11b ad-hoc网络和GPS工具。它专注于非拥堵交通条件下的网络性能分析，适用于车辆网络研究。