Wireless USB

Abstract:

Wireless USB (WUSB) is a form of Universal Serial Bus ( USB ) technology that uses radio-frequency ( RF ) links rather than cables to provide the interfaces between a computer and peripherals, such as monitors, printers, external drives, head sets, MP3 players and digital cameras. The WUSB technology is based on the WiMedia ultra wideband common radio platform.
WUSB allows for connections over distances up to 10 feet (3 meters) at 480 Mbps (megabits per second), or up to 33 feet (10 meters) at 110 Mbps. In order to ensure security, transmissions use encryption . Like standard USB, the WUSB interface offers Plug and Play ( PnP ) compatibility as well as the ability to hot swap hardware components. WUSB is backward compatible with conventional wired USB devices.

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Since its introduction, USB has become the de facto standard in the personal computing industry, with billions of devices in use around the world. Wireless USB promises to expand on the legendary ease of use of traditional wired USB by extending the "plug-and-play" paradigm to an environment where the cables between the PC and devices no longer exist.
At the heart of Certified Wireless USB is a radio technology new to the consumer space: Ultra-wideband. This high-bandwidth, low-power method of wireless data transmission enables the secure, high-speed connection required for the USB-like user experience. This radio platform, developed by the WiMedia Alliance, was chosen in 2004 to serve as the foundation for wireless USB. The official specification, released as version 1.0 in May 2005 by the Wireless USB Promoter Group, will be revised to version 1.1 sometime in 2008 and add updates for better power efficiency and support for frequencies above 6 GHz.
Certified Wireless USB was designed from the ground up to address the specific challenges of wireless communications and personal networking. It is based on an Ultra-wideband (UWB) radio system called orthogonal frequency division multiplexing (OFDM) which was created by the WiMedia Alliance expressly for wireless USB. The Wireless Promoter Group, consisting of seven companies - Intel Corporation, HP, LSI Logic, Microsoft Corporation, NEC Corporation, NXP Semiconductors, and Samsung Electronics - defined the core specification with the support of more than 100 contributing members. This specification, called Wireless USB Specification version 1.0 (soon to be 1.1), is managed by the USB Implementers Forum (USB-IF). Certified Wireless USB includes features necessary for the long-term viability of the solution, such as radio power management, additional security features, and, the potential for the datarate to improve as Certified Wireless USB support is adopted natively by new hardware and operating system updates.