Wireless USB

Wireless USB is a short-range, high-bandwidth wireless radio communication protocol created by the Wireless USB Promoter Group. Wireless USB is sometimes abbreviated as "WUSB", although the USB Implementers Forum discourages this practice and instead prefers to call the technology "Certified Wireless USB" to differentiate it from competitors. Wireless USB is based on the WiMedia Alliance's Ultra-WideBand (UWB) common radio platform, which is capable of sending 480 Mbit/s at distances up to 3 meters and 110 Mbit/s at up to 10 meters. It was designed to operate in the 3.1 to 10.6 GHz frequency range, although local regulatory policies may restrict the legal operating range for any given country.

Uses

Wireless USB is used in game controllers, printers, scanners, digital cameras, MP3 players, hard disks and flash drives. Kensington released a Wireless USB universal docking station in August, 2008. It is also suitable for transferring parallel video streams, while utilizing the Wireless USB over Ultra-widebandWB bandwidth.

Life

Wireless USB life will depend on the usage and environmental conditions. Proper usage will make the usb life long lasting. Improper disconnectivity of the Wireless usb leads to degrade the performance. Mounting and Unmounting procedures are very important in these adapters.

Wireless USB vs. 60 GHz

Few issues differentiate the two technologies:

Line of Sight: at 60 GHz, radio communication is blocked by any intervening object, which implies the need for open line of sight. Wireless USB is based on the UWB platform, which operates in the 3.1 to 10.6 GHz frequency range, and therefore intervening bodies can be passed through with no line-of-sight limitation.

Mobility: the 60 GHz technology is appealing to the wireless video market because it is supposed to deliver multi-gigabit-speed wireless communications. In order to support such heavy demands, the underlying MAC layer should be able to process this huge amount of data. For these requirements, the 60 GHz-based solutions will need higher power consumption, and bigger chips, which are less suitable for mobile units or devices.

Ref : http://en.wikipedia.org/wiki/Wireless_USB