Wi-Fi Direct Multi-Group Communication: Connect different Wi-Fi Direct groups with Access Point
Junwei Xu · OhioLink ETD Center (Ohio Library and Information Network) · 2017
Wi-Fi Direct is a new technology which establishes Wi-Fi peer to peer (P2P) connection between devices at the network layer.It is very similar to Bluetooth which could connect different devices without Wi-Fi or LTE network, but it is faster than Bluetooth.Systems above Android 4.0 provide the Wi-Fi Direct Application Programmer Interface (API) for Android devices to communicate in the same Wi-Fi Direct group.But currently Multi-Group communication (communication between the groups) can not be implemented directly by using Wi-Fi Direct API on Android system.This paper proposes a new topology for Wi-Fi Direct Multi-Group communication, and a new device Access Point is introduced as an intermediary to connect different Wi-Fi Direct Groups.If a Client (Client1) in one group wants to communicate with another Client (Client2) in another group, Client1 will first send the information to its Group Owner (GO1), and then GO1 will send the information to the Access Point.The Access Point can determine which Group Owner the Client2 connects with through the routing table information, and it will send the packets to the target Group owner (GO2).Finally, GO2 will send the packets to destination Client2, which finishes a complete Wi-Fi Direct Multi-Group communication.