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Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.
Operating system Wi-Fi support is defined as the facilities an operating system may include for Wi-Fi networking. It usually consists of two pieces of software: device drivers, and applications for configuration and management. [1] Driver support is typically provided by manufacturers of the chipset hardware or end manufacturers.
Long-range Wi-Fi is used for low-cost, unregulated point-to-point computer network connections, as an alternative to other fixed wireless, cellular networks or satellite Internet access. Wi-Fi networks have a range that's limited by the frequency, transmission power, antenna type, the location they're used in, and the environment. [ 1 ]
The Wi-Fi Alliance has also retroactively labelled the technology for the standard as Wi-Fi 4. [ 9 ] [ 10 ] It standardized support for multiple-input multiple-output (MIMO), frame aggregation , and security improvements, among other features, and can be used in the 2.4 GHz or 5 GHz frequency bands.
The W-series laptops were introduced by Lenovo as workstation-class laptops with their own letter designation, a descendant of prior ThinkPad T series models suffixed with 'p'. [2] The W series laptops were launched in 2008, at the same time as Intel Centrino 2, marking an overhaul of Lenovo's product lineup. [ 2 ]
3. Reboot your modem/router - Sometimes the old "turn it off and on again" approach actually does work! Just wait about five minutes before turning it back on to make sure everything was reset. 4. Contact your Internet Service Provider (ISP) - If you're still not able to get online, reach out to your ISP for additional help.
IEEE 802.11ac-2013 or 802.11ac is a wireless networking standard in the IEEE 802.11 set of protocols (which is part of the Wi-Fi networking family), providing high-throughput wireless local area networks (WLANs) on the 5 GHz band. [d] The standard has been retroactively labelled as Wi-Fi 5 by Wi-Fi Alliance. [9] [10]
The Wi-Fi standards IEEE 802.11ad and IEEE 802.11ay operate in the 60 GHz spectrum to achieve data transfer rates as high as 7 Gbit/s and at least 20 Gbit/s, respectively. Uses of the millimeter wave bands include point-to-point communications, intersatellite links, and point-to-multipoint communications.