PrivateShare: Measuring device-to-device user behavior and transmission quality

Instead of retrieving content from a mobile infrastructure, devices may transmit it between each other, which is referred to as Device-to-Device (D2D) content delivery. This paradigm especially helps the mobile network operator to offload its infrastructure from the delivery of popular content. Private-Share is an application for the Android platform, which enables the user to synchronize content with D2D techniques over Wi-Fi Direct. While being useful for the device owner, it is also a platform for research on several aspects of user behavior and various D2D transmission-or environmental parameters. This paper introduces PrivateShare and discusses first results, which show that most Wi-Fi Direct neighbors are encountered during usual busy times, but also a certain fraction of likely residential devices are encountered overnight.

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