802.16

(redirected from 802.16d)

802.16

A family of IEEE standards for wireless broadband access (BWA). Approved in 2002, and also known as "WiMAX," 802.16 provides up to 300 Mbps of shared point-to-multipoint transmission in the 10 to 66 GHz frequency bands as far as 18 miles. The WiMAX Forum (www.wimaxforum.org) promotes the 802.16 standards using the OFDMA air interface below 11 GHz and provides interoperability certification. At frequencies below 11 GHz, signals can penetrate walls and other dense objects. See Xohm, WiMAX, Wi-Fi, WiBro and 802.11.

Last Mile and Networks
The 802.16 standard was designed to bring wireless broadband into buildings from an ISP or other carrier, offering an alternative to wired T1, cable and DSL lines in the last mile. It can also be used to provide high-speed connectivity between Wi-Fi networks across large campuses as well as create a "wireless metropolitan access network" (WMAN) throughout a city or suburb. The mobile version of WiMAX competes with LTE, the 4G cellular technology (see IMT-Advanced).

802.16-2009 - Fixed and Mobile WiMAX 1
The 802.16-2009 standard includes previous 802.16-2004 fixed and 802.16e mobile versions, among others, and supports the WirelessMAN-SC air interface in the 10-66 GHz range. WirelessMAN-SC is not supported by WiMAX. The first fixed standard was 802.16-2001.

802.16e - Mobile WiMAX 1
The 802.16e standard was the first 802.16 mobile version. It allows people to communicate in the 2-6 GHz band while riding in cars and trains up to 75 mph. Voice over IP (VoIP) is also supported.

802.16m - Mobile WiMAX 2
Submitted as an IMT-Advanced standard, 802.16m increases the shared channel to a maximum of 300 Mbps and allows people to communicate while traveling in high-speed trains up to 200 mph. The ITU has designated both WiMAX 1 and WiMAX 2 as 4G technologies. See IMT-Advanced.
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References in periodicals archive ?
In 2004, a new version of IEEE 802.16 was introduced that was known as IEEE 802.16d or IEEE 802.16 2004.
In security sub layer, WiMAX media access control layer defines fixed security mechanism with IEEE 802.16d standard and mobile networks security mechanisms with IEEE 802.16e standard.
WiMAX operators today are generally offering fixed WiMAX service based on the IEEE 802.16d specification, or mobile WiMAX service based on IEEE 802.16e.
Current IEEE 802.16 standards include: IEEE 802.16, IEEE 802.16a, IEEE 802.16c, IEEE 802.16-2004 (IEEE 802.16d), IEEE 802.16-2005 (IEEE 802.16e), and so on [7].
The deployment is a result of an Indonesian ministry decree requiring existing services at 3.5GHz to be migrated to the 3.3GHz spectrum, using the 802.16d standard.
The 802.16d "fixed wireless" WiMax standard was finalized in 2005; the 802.16e mobile version was finalized in 2005 as well.
1 supplier of systems for fixed WiMAX based on IEEE 802.16d standards, and ranks among the world's top three companies of 802.16e-compliant WiMAX system, or so-called mobile WiMAX.
WiMAX (Worldwide Interoperability for Microwave Access) actually refers to two currently deployed IEEE (Institute of Electrical and Electronics Engineers) standards: fixed WiMAX (802.16d) and the newer mobile WiMAX (802.16e).
However, the most widely used implementations of the standard are 802.16d and 802.16e which instead use Orthogonal Frequency Division Multiplexing (OFDM) and Orthogonal Frequency Division Multiplexing Access (OFDMA).
It is based on two IEEE standards - the 802.16-2004 "fixed" WiMAX standard, also known as 802.16d; and the 802.16e-2005 "mobile" WiMAX standard, also known as 802.16e.