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The transmission standard often uses 802.11b/g/n (2.4G11/54/300M respectively) and 802.11a/n (representing 5.8G54/300M respectively) standards. The wireless bridge has four working modes: wireless coverage, point-to-point, Point-to-multipoint, trunk connection. Especially suitable for close distance and long distance communication in cities. It has two kinds of access methods, IP interface access, IP + E1 dual interface access.
Network transmission under the condition of no big obstacles (mountains, buildings, trees). Its working distance depends on the environment and the antenna. Data transmission over 10 kilometers is transmitted via a point-to-point bridge with built-in high-gain or external high-gain antenna. A bridge with internal antenna can be used as a client (emission) in a range of approximately 5 kilometers. , use the built-in or plug-in large-angle antenna as a base station to receive.
Wireless bridges are usually used outdoors and are mainly used to connect two networks. Wireless bridges need to be used in pairs. The AP can be used alone, the wireless bridge modulation and receiver sensitivity can be transmitted to the distance of up to 50km, 5.8G channel contrast 2.4G channel bridge, 5.8G channel carrier frequency is higher, the stronger the anti-interference ability, farther from the transmission, The higher the acquisition rate. (In theory, a 5.8G device is twice as high as a 2.4G channel device. If the same gain antenna, transmission power, and transmission distance are used, the 5G device transmission rate will be double that of the 2.4G device.)
The operating bandwidth of each channel of 802.11ac is increased from 40MHz of 802.11n to 80MHz, the bandwidth is doubled, and the corresponding transmission rate reaches 600Mbps. Of course, the actual transmission rate may be between 300 Mbps and 400 Mbps, which is close to 3 times the actual transmission rate of the current 802.11n (the actual transmission rate of the current 802.11n wireless router is between 75 Mbps and 150 Mbps), and it is completely enough to transmit more on one channel at the same time. Road compressed video stream. 
The article is based on the concept of wireless network bridge in wireless monitoring system. . Com, please indicate, thank you!
Basic concepts about wireless bridges in wireless monitoring systems
The basic concept of wireless bridges in wireless monitoring systems is well known. Wireless bridges, as their name suggests, are bridges to wireless networks. They can bridge communication between two or more networks. Wireless bridges are also a wireless AP. Branches). In addition to the basic features of the wired bridge described above, the wireless bridge operates in a 2.4G or 5.8G wireless license-free band, making it easier to deploy than other wired network devices.