What does wimax mean?

The Chinese meaning of WiMax is "Global Microwave Internet Access", also known as "802.16 Wireless Metropolitan Area Network"; it is a broadband wireless access technology that can provide high-speed connections to the Internet and long data transmission distances. The longest distance is 50km. WiMAX is mainly used in metropolitan area networks and has the advantages of QoS guarantee, high transmission rate, and rich and diverse services.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

WiMax The full name is Worldwide Interoperability for Microwave Access, Chinese means "Global Microwave Internet Access" . WiMAX is also called 802.16 Wireless Metropolitan Area Network or 802.16.                     

WiMAX is an emerging broadband wireless access technology that can provide high-speed connections to the Internet, with data transmission distances up to 50km.

WiMAX is a high-speed wireless data network standard, mainly used in metropolitan area networks. It was proposed by the WiMAX Forum and took shape in June 2001. It provides at least one mile of wireless broadband access as an alternative to cable and DSL. Make a unique choice among multiple versions and options of the IEEE 802.16 standard to ensure interoperability of products from different vendors. Among the three variants of the 802.16 physical layer, WiMAX chose the 802.16-2004 version of 256 carrier OFDM, which can help telecom operators and Internet service providers build wireless networks through wider frequency bands and longer transmission distances. The last mile of the network is quite different from the IEEE 802.11 communication protocol, which is mainly aimed at short-distance area transmission.

WiMAX can provide a variety of application services, including last-mile wireless broadband access, hotspots, mobile communication backhaul lines, and high-speed connections between enterprises for commercial purposes. Products that pass WiMAX conformance testing are able to create wireless connections to each other and send Internet packet data. Conceptually similar to WiFi, WiMAX has a faster transmission rate and a larger transmission range. It can be simply understood as a "big WiFi".

WirelessMAN-Advanced (IEEE 802.16m), an upgraded version of WiMAX, is one of the two 4G standards.

WiMAX also has the advantages of QoS guarantee, high transmission rate, and rich and diverse services.

WiMAX has a high technical starting point and adopts advanced technologies such as OFDM/OFDMA, AAS, and MIMO that represent the development direction of future communication technology. With the development of technical standards, WiMAX gradually realizes the mobility of broadband services, and 3G realizes the broadbandization of mobile services, and the degree of integration of the two networks will become higher and higher.

The five major advantages of WiMax

One of the advantages of WiMAX development prospects is to achieve longer transmission distances. The 50-kilometer wireless signal transmission distance that WiMax can achieve is unmatched by wireless LANs. The network coverage area is 10 times that of 3G transmission towers. As long as a few base stations are built, city-wide coverage can be achieved, which expands the scope of wireless network applications. greatly expanded.

The second advantage is to provide higher-speed broadband access. It is reported that the highest access speed that WiMax can provide is 70M, which is 30 times the broadband speed that 3G can provide. This is indeed an amazing advancement for wireless networks.

The third advantage is to provide excellent last-mile network access services. As a wireless metropolitan area network technology, it can connect Wi-Fi hotspots to the Internet, and can also be used as a wireless extension of wired access methods such as DSL to achieve last-mile broadband access. WiMax can provide services within a 50-kilometer linear area, and users can establish broadband connections with base stations without cables.

The fourth advantage is to provide multimedia communication services. Because WiMax has better scalability and security than Wi-Fi, it can achieve carrier-grade multimedia communication services.

Advantage 5: From the perspective of the industry chain, Wimax has commercial data network cards and commercial mobile phones (HTC Max 4G), and there is also the problem of terminal consistency testing. Therefore, the WiMAX industry chain still needs to go through a large-scale test process like the TD-SCDMA industry chain.

Three Major Disadvantages of WiMax

First, from a standard perspective, WiMax technology cannot support users to seamlessly switch during mobility. Its speed is only 50 kilometers, and if it moves at high speed, WiMAX cannot meet the requirements of seamless switching. Compared with the three mainstream standards of 3G, its performance is far behind.

Second, WiMAX is not strictly a mobile communication system standard, but a wireless metropolitan area network technology. In addition, our government also organized relevant experts to conduct a full analysis and evaluation of this matter, and the conclusions reached are similar.

Third, WiMAX cannot become a mobile communication system with seamless switching function until 802.16m. The WiMAX camp places its hope of solving this problem on the future 16m standard, but there are still uncertainties in the progress of 16m.

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