Which country first invented WiMax? What about WLAN?

Actually, I don't quite understand, but Wimax doesn't seem to be used in Chinese mainland.

WiFi and WiMAX are two different technologies, and WLAN is a wireless local area network. WLAN is generally a wireless LAN formed by devices using WiFi technology, and it is more common for home use. Of course, most of the wireless campuses and so on are also WLAN, and WiFi is also used, but the effect is very average.

WiMAX is a wireless metropolitan area network technology, with long wireless coverage, high bandwidth and excellent communication quality. In addition, WiMAX can also use both frequencies for WiMAX or public frequencies. Due to the large number of users of these two frequency segments, the interference is more serious.

Wimax can use other frequencies such as and so on.

WiFi is a wireless LAN based technology.

WiMAX is based on wireless LAN technology.

WLAN is an umbrella term for wireless LAN technology.

The first two are specific wireless technologies The latter is an abbreviation for wireless technology, wifi is a wireless LAN technology derived from traditional local area networks, and the range is often relatively smallWimax is a wireless LAN technology derived from modern local area networks (relatively close to the concept of metropolitan area networks), and the range is larger.

But in fact, WiMAX is actually a wireless signal amplifier in the range of the city, as if there are many WiFi hotspots in the city, the essence is also WiFi technology, and it was also used when it was first formed80211 of the Agreement. Since 802...

11 The bandwidth limitation of the 11th protocol for point-to-multipoint is not suitable for the current expanding scale of wireless LAN technology, so the new protocol was formulated.

Refer to Ma Lixiang's "Local Area Network in Metropolitan Area Network".

WiFi is a wireless LAN technology, based on the protocol, the frequency is, is a public frequency, does not need to apply for a special application. Because its transmission distance is close (about 100 meters), it needs to be visible and unobstructed, and the maximum bandwidth is 54m, so it is more suitable for applications to build wireless LAN in a small area.

WiMAX is a wireless metropolitan area network, protocol-based, frequency from, is a proprietary frequency, and can only be applied to the local radio administration. The transmission distance is long (the data transmission distance can reach up to 50 kilometers), and the bandwidth can be up to 3G by the ITU (International Telecommunication Union). On December 22, 2010, the International Telecommunication Union (ITU) officially included WiMAX in the 4G standard.

As for WLAN, it is a general term for wireless local area network, and you can also think of it as WiFi, at least in China, which is how confusing operators are.

At present, from 3G to WLAN and WiMAX, and from UWB to Zigbee, the diversified development pattern of wireless communication is becoming increasingly apparent. Industry insiders believe that although various wireless technology applications are "competing for the current", facing the future, the complementarity and integration of different technologies will become the general trend. As long as we accurately grasp the general trend of the development of the wireless communication industry, find out the positioning of different wireless technologies, and promote it rationally and pragmatically guided by market demand, the wireless communication industry will usher in a better future.

The complementary integration of various wireless technologies has become the general trend, and WiMAX will become an effective supplement to 3G networks.

It should be noted that diversified wireless technologies not only add vitality to the development of the industry, but also bring new challenges to the existing telecom operation pattern. In the past two years, with the emergence of various broadband wireless technologies, people have all kinds of doubts about the development prospects of 3G, and even statements such as "WiMAX will be the terminator of 3G". Industry insiders believe that due to the different technical characteristics, facing the future, various wireless technologies, including 3G, WLAN, Wimax, UWB, Zigbee, etc., will develop together in complementary integration, rather than ending or replacing each other.

In fact, at the beginning of the promotion and application of WLAN, there was a voice in the industry that "WLAN will replace 3G". In recent years, the repeated postponement of the global 3G commercial process has indeed provided a good opportunity for the rapid deployment of WLAN with high-speed Internet access capabilities. However, from the analysis of comprehensive factors such as coverage area, transmission rate, basic service type, roaming, mobile rate, forward expansion and evolution, etc., 3G and WLAN are more complementary.

Judging from the actual situation in recent years, although WLAN has been deployed on a large scale in some hot spots, it has not formed a head-on competition with 3G, so it is obviously biased to believe that WLAN will replace 3G.

Similar to WLAN, although WiMAX technology is maturing and the industrialization process is accelerating, WiMAX will not be the end of 3G. Industry experts believe that although WiMAX transmission rates far exceed 3G, WiMAX and 3G are not positioned in the same way. As a metro network technology for broadband wireless access, WiMAX's market goal is to provide a point-to-multipoint broadband wireless access means in metropolitan area network areas, and its market positioning is in the category of broadband wireless metro network.

The positioning of 3G is based on wireless WANs, providing voice and multi-** data services to the public, and can achieve global roaming. From a technical point of view, WiMAX does not yet have the characteristics of wide-area roaming, security, and terminal portability of 3G public mobile communication networks, and lacks the ability to support high-quality real-time voice services. In addition, WiMAX is still about two years away from official commercial use, and it will take about five years for large-scale popularization.

Therefore, WiMAX and 3G are not a substitute for each other, and WiMAX can be used as an effective supplement to 3G networks in the field of high-speed wireless broadband access.

WLAN stands for Wireless Local Area Network, which is intuitively a local area network composed of no cables. WiFi accurately refers to a technology, the technology of networking with radio waves, and now it is also commonly used to indicate that electronic devices can be connected to wireless network Wimax is this standard, which is a new type of high-speed wireless network access technology, with a large access distance and QoS

Wifi is home wireless network.

WLAN is the wireless network of the three major operators.

3G is the third generation of mobile communication technology.

WiMAX is a global interworking microwave access, and WCDMA, the higher-level network of WiFi, is a kind of 3G network standard.

GPRS is a mobile data service available to mobile** users in the second generation of wireless communication technology.