Vehicular LTE Connectivity Analysis in Urban and Rural Environments using USRP Measurements

TL;DR

This study analyzes LTE connectivity for vehicles in urban, sub-urban, and rural areas through field measurements, revealing coverage differences and connectivity characteristics using SDR-based data collection.

Contribution

It provides a comprehensive methodology for post-processing SDR measurements and offers new insights into LTE coverage and link quality across different environments.

Findings

Urban areas have stronger LTE coverage and shorter disconnect durations.

Rural environments exhibit weaker coverage and longer disconnection periods.

Measurement methodology enables detailed analysis of vehicular LTE connectivity.

Abstract

The intelligent transportation system (ITS) offers a wide range of applications related to traffic management, which often require high data rate and low latency. The ubiquitous coverage and advancements of the Long Term Evolution (LTE) technology have made it possible to achieve these requirements and to enable broadband applications for vehicular users. In this paper, we perform field trial measurements in various different commercial LTE networks using software defined radios (SDRs) and report our findings. First, we provide a detailed tutorial overview on how to post-process SDR measurements for decoding broadcast channels and reference signal measurements from LTE networks. We subsequently describe the details of our measurement campaigns in urban, sub-urban, and rural environments. Based on these measurements, we report joint distributions of base station density, cellular coverage, link strength, disconnected vehicle duration, and vehicle velocity in these environments, and compare the LTE coverage in different settings. Our experimental results quantify the stronger coverage, shorter link distances, and shorter duration of disconnectivity in urban environments when compared to sub-urban and rural settings.