Abstract
Device-to-Device (D2D) communication lets devices can directly communicate with each other without going through any access point. With the rapidly increasing number of mobile devices, the D2D network can further increase spectral efficiency and offers traffic offloading capabilities. Devices can achieve the D2D communication over Wi-Fi Direct mechanism. In order to handle the mobility of devices or natural disasters, the D2D network is required to be formed dynamically and automatically. In this thesis, we propose a method to automatically establish the D2D network over Wi-Fi Direct multiple groups formation and seamlessly enable cross-group communication. This method can apply to non-rooted Android devices. The whole proposed scheme consists of two procedures—cluster initialization and connection of multi-cluster. Our method is implemented and validated by an open-source Android communication application. Experiment results show that our method reduces network formation latency in comparison with other scheme.