Microsoft Wi-Fi Direct Virtual Adapter Driver for Windows 8.1 - Download and Installation Guide
Virtual WiFi helps a user connect to multiple IEEE 802.11 networkswith one WiFi card. It works by exposing multiple virtual adapters,one for each wireless network to which connectivity is desired.Virtual WiFi uses a network hopping scheme to switch the wireless cardacross the desired wireless networks. Switching between networks istransparent to the applications, such that the user feels she isconnected to multiple wireless networks simultaneously. Virtual WiFiis implemented as an NDIS intermediate driver, and a user-levelservice in Windows XP. Virtual WiFi interacts with the card devicedriver at the lower end, and network protocols at the upper end. Thebuffering protocol is implemented in the kernel and the switchinglogic is implemented as a user-level service.