Analysis of wireless bridges (1)

To fully understand wireless networks, you must understand wireless bridges. So what is a wireless bridge? What is his role in wireless networks? How to build a point-to-point Wireless Bridge? The following article will introduce you.

What is a wireless bridge? A wireless bridge is a bridge between two or more networks. A Wireless Bridge is also a branch of a Wireless AP ). In addition to the basic features of the above-mentioned wired bridges, wireless bridges work in the 2.4G or 5.8G frequency band without a wireless license, making it easier to deploy than other wired network devices.

The transmission standard is usually based on 802.11b, 802.11g, and 802.11a. The data rate of 802.11b is 11 Mbps, 802.11b usually provides the actual data rate from 4 Mbps to 6 Mbps, while the 802.11g and 802.11a standard wireless bridges all have the transmission bandwidth of 54Mbps, and the actual data rate can reach about 5 times of 802.11b.

In the vendor's publicity description, although many Wireless AP or wireless routers also have the bridge function, it is also called a wireless bridge by the vendor, however, the Wireless Bridge mentioned in this Article strictly refers to the communication distance between products 1-20 km or above, rather than bridging within a few hundred meters like a common Wireless AP or wireless router.

Establish communication between two points (such as headquarters and branches, network centers, and residential areas. There are several transmission modes based on the customer's needs and actual survey conditions:

(1) visible between two AB points; no obstacle blocking; no electromagnetic interference, or small interference; the distance between two AB points must comply with the communication distance between the bridge equipment.

Point-to-Point direct transmission: A Wireless Bridge is placed in building A, and A targeted antenna is placed on the top. A non-bridge is also placed in Building B, and A targeted antenna is placed on the top. After the wireless bridges in two locations are connected to the local antenna through the feeder, wireless communication between the two sites can be quickly established. Wireless Bridges connect network switches in different regions through cat5e twisted pair wires. In this way, the two networks can be connected as one.