CRAWDAD srfg/lte-4g-highway-drive-tests-salzburg
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4G LTE long-term mobile communications drive test data set. DOI: https://doi.org/10.15783/6gc4-y070A data set of active 4G LTE measurements via repeated drive tests that covers two years on a typical highway section of 25km length in Austria and contains 267198 data points in total. Each data point includes signal quality metrics, GPS position, GPS time, and instantaneous data rate.institution :Salzbury Research (SRFG)version :2022-01-18external url :https://github.com/mherlich/wireless-data-setTracesetdrive-tests-tracesetfiles: SRFG-v1.csvdescription: 4G LTE long-term mobile communications drive test tracesettech description: A traceset of active 4G LTE measurements via repeated drive tests that covers two years on a typical highway section of 25km length in Austria and contains 267198 data points in total. Each data point includes signal quality metrics, GPS position, GPS time, and instantaneous data rate.collection method: Custom-built Raspberry Pi~2 based measurement equipment is used to conduct a controlled drive test measurement campaign. Each Raspberry Pi is equipped with the same Huawei E3372 LTE network interface that provides the Huawei HiLink API for signal parameter monitoring. The measurement equipment constantly exchanges data at full load. Five TCP flows with 100MB HTTP traffic each are simultaneously transmitted and continuously restarted once a download is complete. Then, the data rate is monitored for each flow and averaged over 1 second. The overall data rate is the sum of the individual flow data rates. In addition, a GPS module simultaneously records the geographical position and the time. The Huawei HiLink API is used to monitor the signal parameters that are provided by the LTE network interface in a 1 second interval.methodology limitations: The drive test measurements are derived from organized measurement drives without much privacy concerns and private drives where the vehicle was previously equipped with the measurement equipment (identififying data is removed in the trace set). Often the drive tests are conducted during rush hour when high cell loads are expected. But overall, conceptually there is no strict measurement schedule and there are drive tests at all times of day and during most of the year. Due to the absence of strict measurement scheduling the data points are not uniformly distributed over the year; especially during the summer months August and September there are fewer data points. Nonetheless, for each month there is a minimum of 2000 data points. Over the 2 year collection period the network infrastructure is not static, for example, new cells are installed or removed by the network operator. Due to this fact--and possible behavioral changes in the network users over the two year period--some network metrics significantly change as well. This traceset is not representative for general use of cellular networks. This traceset is, for example, based on commuting travel patterns, which might not be generally representative and gender-neutral.sanitization: The drive test measurements are both sourced from organized measurement drives without much privacy concerns and private drives where the vehicle was previously equipped with the measurement system. To eliminate the possibility to create general movement profiles the traceset is restricted to a fixed geographical region. All identifying data, like measurement ids, is removed.dataname: drive-tests-tracesetversion: 2022-01-18date/time of measurement start: 2018-01-01date/time of measurement end: 2019-12-31drive-tests-traceset TracesSRFG-v1.csv: undefinedlast modified: 2022-01-13dataname: SRFG-v1.csvurl: /download/srfg/lte-4g-highway-drive-tests-salzburg/2022-01-18/drive-tests-traceset/SRFG-v1.csv
本数据集为第四代长期演进移动通信（4G LTE）长期路测数据集。DOI：https://doi.org/10.15783/6gc4-y070。该数据集通过重复路测获取主动式4G LTE测量数据，覆盖奥地利一段25公里长的典型高速公路路段，采集周期长达两年，总计包含267198条数据点。每条数据点均包含信号质量指标、GPS位置、GPS时间以及瞬时数据速率。 所属机构：萨尔茨伯里研究院（Salzbury Research, SRFG） 版本：2022-01-18 外部链接：https://github.com/mherlich/wireless-data-set 追踪集名称：drive-tests-traceset 数据文件：SRFG-v1.csv 数据集描述：4G LTE长期移动通信路测追踪集 技术说明：本追踪集通过重复路测获取主动式4G LTE测量数据，覆盖奥地利一段25公里长的典型高速公路路段，采集周期长达两年，总计包含267198条数据点。每条数据点均包含信号质量指标、GPS位置、GPS时间以及瞬时数据速率。 采集方法：采用基于树莓派（Raspberry Pi~2）的定制化测量设备开展受控路测测量活动。每台树莓派均搭载同款华为E3372 LTE网络接口，该接口提供华为HiLink API以实现信号参数监控。测量设备以满负载状态持续交换数据：同时发起5条TCP数据流，每条数据流承载100MB HTTP流量，下载完成后自动重启。随后对每条数据流的数据速率进行监控，并以1秒为周期取平均值，总数据速率为各单条流数据速率之和。此外，GPS模块同步记录地理位置与时间信息。通过华为HiLink API，以1秒为间隔监控LTE网络接口提供的信号参数。 方法论局限性：本次路测数据源自两类场景：一是无显著隐私顾虑的组织化测量行驶，二是此前搭载测量设备的私人行驶（追踪集中已移除识别性数据）。路测通常在高峰时段开展，此时蜂窝小区负载较高。但整体而言，本数据集并无严格的测量时间表，全年多数时段均可开展路测。由于缺乏严格的调度规划，数据点在全年分布并不均匀：尤其是8月与9月的夏季时段，数据点数量相对较少。不过每个月的数据点数量均不少于2000条。在两年的采集周期内，网络基础设施并非一成不变：网络运营商可能会新增或移除蜂窝小区。此外，两年间网络用户的行为模式也可能发生变化，这导致部分网络指标出现显著变动。本追踪集并不适用于蜂窝网络的通用使用场景：其基于通勤出行模式，不具备普适代表性，且并非性别中立。 数据脱敏处理：本次路测数据源自两类场景：一是无显著隐私顾虑的组织化测量行驶，二是此前搭载测量系统的私人行驶。为消除生成通用移动轨迹的可能性，追踪集被限制在固定地理区域内。所有识别性数据（如测量ID）均已移除。 数据名称：drive-tests-traceset 版本：2022-01-18 测量开始时间：2018-01-01 测量结束时间：2019-12-31 drive-tests-traceset 追踪集文件SRFG-v1.csv：未定义 最后修改时间：2022-01-13 数据名称：SRFG-v1.csv 下载链接：/download/srfg/lte-4g-highway-drive-tests-salzburg/2022-01-18/drive-tests-traceset/SRFG-v1.csv
