WiMAX aka (Worldwide Interoperability for Microwave Access) Microwave Access authentication industry Interoperability major league members include equipment manufacturers, suppliers, operators, etc, the device for main task is through product authentication, compatibility and Interoperability standards applied to eliminate the IEEE802.16 obstacles, expand the scope of application of standard. 802.16 is developed by IEEE802 wireless technology air interface standards, representative of the standard including 802.16 d fixed wireless access and 802.16 e mobile wireless access standards. According to the current situation of technological development, 802.16 d mainly located in enterprise users, provide the means of transport, and long 802.16 e user groups are located in the individual user, support users in mobile broadband network condition.
WiMAX is an emerging technology, can be in more than Wi-Fi within the scope of the vast area “last kilometer” broadband connectivity, which support enterprise customer service and residents enjoy T1 user has to cable/DSL access. Relying on its site in any 1 ~ 6 miles coverage (depends on many factors), WiMAX will provide for high-speed data more excellent mobility. In addition, depending on the coverage and high throughput rate, WiMAX can provide for telecommunications infrastructure, enterprise zone and WiFi hotspot provide return.
WiMAX will be divided into three stages deployment. The first stage is through indoor antennas to deploy IEEE802.16 d by the standard WiMAX technology, target users is fixed locations known subscriber. The second phase will deploy indoor antennas, WiMAX will appeal to broaden the technology for simplifying the operator user: installation. The third stage will be launched in the IEEE802.16 e, WiMAX specification authentication hardware will be used in portable solutions for those who hope, in service, the user support similar roamed in today’s Wifi ability, but more lasting WiFi solid connectivity.
The primary challenge WiMAX face is still the construction cost and price. Currently MMDS multicast channel, including distributed system WiMAX antenna deployment, cost as much as $3,000 for each user, which not only makes operators difficult to obtain enough investment returns, the user will tremble for China, besides, wince GHz 3.5 this resource is limited band of MMDS broadband wireless access system, after several rounds of scheme updates and technology innovation, various equipment has quite high performance-to-price ratio, WiMAX if the price according to the above similar to participate in the competition will be facing serious challenges. In addition, WiMAX and Wi-Fi, 3G in quite a long time, and each will be in the overlapping area to a certain extent, the competition among these systems, maintain efficient and enhance its interworking is facing the competition WiMAX important tasks.
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