Mobile WiMAX, as defined by the WiMAX Forum, represents a version of WiMAX technology tailored for mobile broadband wireless access. Here are the key aspects and developments related to Mobile WiMAX:
- IEEE 802.16e Standard: Mobile WiMAX is based on the IEEE 802.16e standard, which specifies the air interface and protocols for mobile wireless broadband communications. This standard enables high-speed wireless connectivity for mobile devices.
- WiMAX Forum Profiles: The WiMAX Forum has defined several profiles for Mobile WiMAX. These profiles specify parameters such as channel bandwidth, frequency bands, and other settings. Release-1 Profiles primarily utilize Time-Division Duplexing (TDD) and target frequency bands in the 2.3-2.69 GHz and 3.3-3.8 GHz ranges, with a focus on the 2.5-2.69 GHz IMT-2000 band.
- ITU-R Recognition: In October 2007, the International Telecommunication Union Radiocommunication Sector (ITU-R) included IEEE 802.16e in the IMT-2000 family of terrestrial radio interfaces. It was recognized under the name “OFDMA TDD WMAN.”
- Broad Channel Bandwidths: While Mobile WiMAX Release-1 profiles primarily use TDD and channel bandwidths of 5, 7, 8.75, or 10 MHz, the IEEE 802.16e-2005 standard supports a broader range of channel bandwidths, from 1.25 to 20 MHz. This flexibility allows for different deployment scenarios and spectrum availability.
- Future Developments: IEEE 802.16 continues to evolve to meet the requirements of advanced wireless networks. The IEEE 802.16m standard is being developed to address the demands of IMT-Advanced, offering enhanced capabilities and performance.
Mobile WiMAX has played a significant role in providing high-speed wireless broadband access for mobile devices and has been deployed in various regions worldwide. It offers the potential for efficient data transmission and improved connectivity for users on the move.