Demo: WiFi Multihop: Implementing Device-to-Device Local Area Networks by Android Smartphones

Abstract

WiFi Direct is a new technology proposed by WiFi Alliance to enable direct device to device communications using the same spectrum as WiFi. In some scenarios, communication distance between two devices cannot be covered by one hop, and thus, multihop Device to Device (D2D) communication is required to solve this problem. However, existing WiFi Direct protocol doesn't provide multihop message routing. In this paper, we propose a multihop D2D communication protocol based on WiFi Direct, and implement it on Android smartphone. Devices will form a group in consideration of power and topology condition, delay-tolerant routing between two groups is supported by the protocol.