A Research of USB Device Redirection Mechanism over IP network in Desktop Cloud System

摘要

As most existing device sharing technologies are only abstract operations sharable, such as read and write, virtual desktop users can't share the device-specific characteristics of USB devices attached to cloud terminal. In this paper, we propose USB device redirection as a peripheral bus extension over an Internet Protocol (IP) network. Cloud terminal extends the local peripheral bus to a virtual desktop (VD). The main component of this extension is a virtual peripheral bus driver, which resides in the lowest layer in an operating system. Our experiments show that this approach enables virtual desktop applications to access diverse features of all USB devices and has sufficient I/O performance.