Augmenting Mobile 3G Using WiFi: Measurement, System Design, and Implementation

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Executive Summary

This paper investigates if WiFi access can be used to augment 3G capacity. To understand the feasibility of 3G augmentation, the authors conduct a detailed study of 3G and WiFi access from moving vehicles, in three different cities. The authors find that the average 3G and WiFi availability across the testbeds is 87% and 11%, respectively. The authors also find that, unlike stationary environments, WiFi throughput is lower than 3G throughput in mobile environments, and WiFi loss rates are higher.

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