Wireless USB (Wireless USB) - a standard for wireless data transfer, which is being developed by the Wireless USB Promoter Group .
Content
History
In 2005, the first version of Wireless USB was announced, which provided for the possibility of wireless information exchange between devices at speeds of up to 480 Mbps in a radius of three meters. When the distance increases to ten meters, the bandwidth of the communication channel decreases to 110 Mbps.
In 2007, the first products entered the market.
In September 2010, the Wireless USB 1.1 specification was completed. It implies an increase in the data transfer rate, as well as support for higher frequencies - up to 6 GHz and higher. During development, great attention was paid to improving energy efficiency. Devices made in accordance with Specification 1.1 spend less energy in idle mode. Wireless USB 1.1 supports Near Field Communication (NFC) technology, making it easy to configure and operate Wireless USB devices. Retained backward compatibility with existing equipment.
Usage
Wireless USB is intended as a replacement for traditional wired USB. Typical plug-in devices include: keyboard, mouse, camera, printer, external drives, etc. Wireless USB can also be used to easily share printers that do not have a standard network interface or connection to a print server. A printer connected to Wireless USB behaves as if it is connected via USB directly to a regular computer. The technology is not intended to create computer networks (although theoretically this is possible).
Data Transfer
The transfer parameters correspond to those of the standard USB version 2.0, but the bandwidth depends on the distance between the interacting devices. At a distance of up to 3 meters, the data transfer rate can theoretically reach 480 Mbps (normal for the USB standard). At a distance of 10 meters - only up to 110 Mbps (under optimal conditions). Wireless USB is designed to operate in the frequency range from 3.1 GHz to 10.6 GHz. Data transmission is encrypted using AES-128 / CCM.
Physical data transfer is based on UWB wireless technology developed by the WiMedia alliance. The same technology is used by other standards for wireless data transfer ( Bluetooth , WiNET , ZigBee ).