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WiMAX (Worldwide Interoperability for Microwave Access) is a family of wireless communication standards based on the IEEE 802.16 set of standards, which provide multiple physical layer (PHY) and Media Access Control (MAC) options.
The name "WiMAX" was created by the WiMAX Forum, which was formed in June 2001 to promote conformity and interoperability of the standard, including the definition of predefined system profiles for commercial vendors.The forum describes WiMAX as "a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL".IEEE 802.16m or WirelessMAN-Advanced is a candidate for the 4G, in competition with the LTE Advanced standard.
It’s hard to buy a laptop computer today that doesn’t come with a Wi-Fi chip: a built-in radio that lets users surf the Web wirelessly from the boardroom, the bedroom, or the coffee bar. People love Wi-Fi because a single base station – a box with a wired connection to the Internet, such as a DSL, cable, or T1 line – can broadcast to multiple users across distances as great as 100 meters indoors and 400 meters outdoors. But there’s a new technology standard on the way that will make Wi-Fi look feeble. It’s called WiMax, and it provides wireless broadband Internet connections at speeds similar to Wi-Fi’s – but over distances of up to 50 kilometers from a central tower.
Founded : 2017
Designation : Why wimax
Mission : The WiMAX Forum is a worldwide consortium chartered to deliver certification that achieves global interoperability, develop technical specifications based on open standards, pursue a favorable regulatory environment and promote the vision.
Devices that provide connectivity to a WiMAX network are known as subscriber stations (SS).
Portable units include handsets (similar to cellular smartphones); PC peripherals (PC Cards or USB dongles); and embedded devices in laptops, which are now available for Wi-Fi services. In addition, there is much emphasis by operators on consumer electronics devices such as Gaming consoles, MP3 players and similar devices. WiMAX is more similar to Wi-Fi than to other 3G cellular technologies.
The WiMAX Forum website provides a list of certified devices. However, this is not a complete list of devices available as certified modules are embedded into laptops, MIDs (Mobile Internet devices), and other private labeled devices.
WiMAX refers to interoperable implementations of the IEEE 802.16 family of wireless-networks standards ratified by the WiMAX Forum. (Similarly, Wi-Fi refers to interoperable implementations of the IEEE 802.11 Wireless LAN standards certified by the Wi-Fi Alliance.) WiMAX Forum certification allows vendors to sell fixed or mobile products as WiMAX certified, thus ensuring a level of interoperability with other certified products, as long as they fit the same profile.The original IEEE 802.16 standard (now called "Fixed WiMAX") was published in 2001. WiMAX adopted some of its technology from WiBro, a service marketed in Korea.
Mobile WiMAX (originally based on 802.16e-2005) is the revision that was deployed in many countries, and is the basis for future revisions such as 802.16m-2011.
WiMAX is sometimes referred to as "Wi-Fi on steroids" and can be used for a number of applications including broadband connections, cellular backhaul, hotspots, etc. It is similar to Wi-Fi, but it can enable usage at much greater distances.
Uses of WiMax
The bandwidth and range of WiMAX make it suitable for the following potential applications:
Providing portable mobile broadband connectivity across cities and countries through a variety of devices.
Providing a wireless alternative to cable and digital subscriber line (DSL) for "last mile" broadband access.
Providing data, telecommunications (VoIP) and IPTV services (triple play).
Providing a source of Internet connectivity as part of a business continuity plan.
Smart grids and metering
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