Device to device communications with Wi Fi Direct: overview and experimentation
Wi Fi Direct is a new technology defined by the Wi Fi Alliance aimed at enhancing direct device to device communications in Wi Fi. Thus, given the wide base of devices with Wi Fi capabilities, and the fact that it can be entirely implemented in software over traditional Wi Fi radios, this technology is expected to have a significant impact. In this article we provide a thorough overview of the novel functionalities defined in Wi Fi Direct, and present an experimental evaluation that portrays the performance to be expected in real scenarios. In particular, our results quantify the delays to be expected in practice when Wi Fi Direct devices discover each other and establish a connection, and the performance of its novel power saving protocols. To the best of the authors? knowledge this is the first article in the state of the art that provides a wide overview and experimental evaluation of Wi Fi Direct.
IEEE Wireless Communications