Introduction to Wireless Bridge Mode-Wireless Bridge relay Mode

The Wireless Bridge relay mode is the focus of this Article. Through the point-to-point and point-to-point introduction in the previous article, you should have some knowledge about the wireless bridge settings. Now let's get to the point. I hope this article will help you.

When there are obstacles between the two local networks to be connected, you can use the Wireless Bridge relay mode to bypass the obstacles to complete the wireless bridging between the two points.

The location of the wireless relay point should be the same as the location where Network A and Network B can be seen at the same time. The two oriented antennas connected by the Wireless Bridge relay mode are directed at the targeted antennas of Network A and Network B respectively, the communication between wireless bridge A and wireless bridge B is completed by relay the Wireless Bridge.

There are two ways to build a relay Bridge:

A single bridge acts as a repeater and two bridges form a relay point back to back. A single bridge can be connected to two antennas through a splitter. This method is very simple and practical for users who are not very sensitive to bandwidth due to the shared bandwidth of two-way communication. Users with high bandwidth requirements can adopt two backto-back bridges in different frequencies to work in the wireless bridge relay mode. Each wireless bridge connects an antenna to form a bridge relay to ensure high-speed wireless link communication.

Here, as a supplement, let's take a look at what is a relay and a wireless communication relay.

The basic principle of the relay theory was proposed by Erlang, a Danish mathematician at the end of the 19th century. He is committed to studying how to serve a large number of users through limited service capabilities. Now, his name is used as the unit of traffic intensity. An Erlang indicates the call duration of a fully occupied channel, namely, the call duration per hour or per minute ). For example, a 30-minute channel occupies 0.5 Erlang traffic.

In wireless communication, the concept of relay is to allow a large number of users to share a relatively small number of channels in a cell, that is, allocate channels to each user on demand from the available channel library.

In a relay wireless system, each user only allocates a channel when there is a call. Once the call ends, the original channel is immediately returned to the available channel library.

Based on user behavior statistics, relay enables a fixed number of channels or lines to serve a larger and random user group. Telephone companies rely on the relay theory to determine the number of lines allocated for office buildings with hundreds of thousands of telephones. The relay theory is also used in the design of cellular wireless systems. There is a compromise between the number of available telephone lines and the possibility that no line is available during call peaks. When the number of telephone lines decreases, the possibility of busy all lines for a specific user increases. In a relay mobile wireless system, when all wireless channels are occupied and users request services, call blocking or access is denied. In some systems, you may use a queuing method to save the information of the user requesting a call until there is a credit line.