wireless network
It includes both global voice and data networks that allow users to establish long-distance wireless connections, as well as infrared and radio frequency technologies that are optimized for near-field wireless connectivity. These are similar to those of wired networks. The biggest difference lies in the use of different transmission media. Radio technology replaces network cables and can be used as backup for wired networks.
Wireless LAN Noun Resolution: The network can be divided into LAN, MAN, and WAN according to the area classification.
Wireless bridge
From the perspective of understanding the wireless bridge, it can be used to connect two or more separate network segments. These separate network segments are usually located in different buildings, which are several hundred meters to several tens of kilometers apart. So it can be widely used in the interconnection between different buildings. At the same time, according to different protocols, wireless bridges can be divided into 802.11b, 802.11g, and 802.11n in the 2.4 GHz band, and 802.11a and 802.11n in the 5.8 GHz band. Wireless bridges have three operating modes, point-to-point, point-to-multipoint, and trunk bridging. Especially suitable for long-distance communication in the city.
In the absence of a major obstacle (mountain peaks or buildings), temporary networking of a pair of speed networking and field operations. Its effect distance depends on the environment and the antenna, which is now 7km of point-to-point microwave interconnection. A pair of 27dbi directional antennas can achieve a 10km point-to-point microwave interconnection. 12dbi directional antennas can achieve 2km of point-to-point microwave interconnections; a pair of wireless bridges that only implement link layer functions are transparent bridges, while directional antennas with routing and other network layer functions can achieve heterogeneous real-time implementation on the network 24dbi. The Internet-connected device is called a wireless router and can also be used as a third-tier bridge.
Wireless bridges are usually used outdoors and are mainly used to connect two networks. It is not possible to use only one wireless bridge and it is necessary to use two or more wireless access bridges. APs can be used independently. The wireless bridge has large power, long transmission distance (up to about 50km), strong anti-interference ability, etc. It does not have its own antenna and is generally equipped with a parabolic antenna to realize long-distance point-to-point connections; some new integrated equipments have also mostly come out. , everything.
AP access points, also known as wireless LAN transceivers, are used for wireless HUBs in wireless networks and are the core of wireless networks. It is an access point for mobile computer users to enter the backbone of wired Ethernet. The AP can be easily installed on the ceiling or wall. Its maximum coverage in open spaces can reach up to 300 meters and the wireless transmission rate can be as high as 11 Mbps.
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