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WiMAX Forum logo WiMAX base station equipment with a sector antenna and wireless modem on top. Worldwide Interoperability for Microwave Access (WiMAX) is a family of wireless broadband communication standards based on the IEEE 802.16 set of standards, which provide physical layer (PHY) and media access control (MAC) options.
IEEE 802.16 is a series of wireless broadband standards written by the Institute of Electrical and Electronics Engineers (IEEE). The IEEE Standards Board established a working group in 1999 to develop standards for broadband for wireless metropolitan area networks.
WiMAX MIMO refers to the use of Multiple-input multiple-output communications (MIMO) technology on WiMAX, which is the technology brand name for the implementation of the standard IEEE 802.16. Background
This image is a derivative work of the following images: File:WiMAXArchitecture.png licensed with PD-user-en, PD-user-w . 2009-05-03T14:19:21Z Gleb.svechnikov 547x411 (4706 Bytes) {{Information |Description={{en|1=WiMAX Architecture}} {{ru|1=WiMAX Архитектура}} |Source=WiMAX Forum |Author=Phil Holmes |Date=16:40, 17 October 2007 |Permission= |other_versions= }}
IEEE 802.16 - called fixed WiMAX because of static connection without handover.; IEEE 802.16e - called mobile WiMAX because it allows handovers between base stations.; IEEE 802.16m - advanced air interface with data rates of 100 Mbit/s mobile and 1 Gbit/s fixed.
A nationwide WiMAX network was built in the United States by Clearwire, a subsidiary of Sprint-Nextel, covering 130 million points of presence (PoPs) by mid-2012. [26] Sprint subsequently announced plans to deploy LTE (the cellular 4G standard) covering 31 cities by mid-2013 [27] and to shut down its WiMAX network by the end of 2015. [28]
Sprint purchased the carrier in 2006 and decided to deploy the mobile version of WiMAX, which is based on Scalable Orthogonal Frequency-Division Multiple Access (SOFDMA) technology. [ 54 ] Citizens Telephone Cooperative launched a mobile broadband service based on Flash-OFDM technology to subscribers in parts of Virginia in March 2006.
In the IEEE 802.11 wireless LAN protocols (such as Wi-Fi), a MAC frame is constructed of common fields (which are present in all types of frames) and specific fields (present in certain cases, depending on the type and subtype specified in the first octet of the frame).