Difference between wireless AP and wireless bridge

Wireless APs and wireless bridges Many weak friends are unclear, and often ask us the difference between the two. Today, the weak industry network has compiled some knowledge about the two to share with you. Both wireless APs and wireless bridges are wireless access devices, but they are fundamentally different.

First, wireless ap

A wireless AP is called a wireless access point and is an access point of a wireless network, commonly known as a "hot spot." It is mainly used for routing switching access to integrated devices and pure access point devices. The integrated device performs access and routing. The pure access device is only responsible for wireless client access. Pure access devices are usually used as wireless network extensions, and other APs. Or the primary AP is connected to expand the wireless coverage, and the integrated device is generally the core of the wireless network.

A wireless AP is an access point for a user to enter a wired network using a wireless device (a mobile device such as a shou machine or a mobile device such as a notebook computer), and is mainly used for broadband monitoring in a broadband home, a building interior, a campus interior, a campus interior, a warehouse, a factory, and the like. The typical distance covers tens of meters to hundreds of meters. It can also be used for long-distance transmission. The farthest distance can reach 30km or so. The main technology is IEEE802.11 series. Most wireless APs also have an AP client that can be wirelessly connected to other APs to extend the coverage of the network.

Second, the wireless bridge

As the name suggests, wireless bridges are the bridges of wireless networks. They use wireless transmission to bridge the communication between two or more networks. Wireless bridges are divided into circuit-type bridges and data-type bridges from the communication mechanism. In addition to the basic features of the wired bridge, the wireless bridge works in the 2.4G or 5.8G free wireless license band, which is more convenient to deploy than other wired network devices.

Third, the difference between wireless AP and wireless bridge

The difference between the function of the wireless AP and the wireless bridge is mainly in the application, the wireless AP is used for coverage, and the user is mainly a single mobile user, and has functions such as roaming and authentication. But the wireless bridge is mainly the connection between the user networks. Just like the bridge in our real life, it is a place where two connections cannot be crossed. In real life, the two sides of the river are connected. As for the communication distance, this has nothing to do with the mode.

Wireless AP is a wireless access point. The common understanding is that you have a centralized signal transmission point and multiple signal receiving points. For example, nowadays, home wireless routers are like this. If you buy a wireless router, you can access the wired signal. Dian voice line, by configuring this wireless router, you can send signals through this wireless router, then this signal is sent out, maybe more than one of you can receive this signal, even some of you next door can receive this signal Then you need to set a password to prevent such problems from happening. This is a launch center, and you can access many terminals.

A wireless AP is generally used indoors. An AP (Access Point), like its name, is a wireless access point, which mainly serves as an access function, and is usually used for nodes of wired networks and wireless networks. In the place where wiring is convenient, a wireless AP can be used to connect the terminal in the area, and the AP is connected to the wired network. Generally, the antenna is self-contained, and the transmission distance (coverage range) is small under the transmission power, even if the external antenna + power amplifier has a transmission distance. Not more than ten kilometers, and the signal is also unstable due to poor resistance to multipath interference.

The bridge works at the data link layer, and the common understanding of the physical layer (different networks such as Ethernet Token Ring) different networks can be interconnected through the bridge but the protocols above the network layer must be the same. The wireless bridge is usually used for outdoor use. It is mainly used to connect two networks. It has large power, long transmission distance (up to about 50km), strong anti-interference ability, etc. It does not have its own antenna. It is usually equipped with a parabolic antenna to achieve long distance. Point-to-point connection. There are also very few self-contained antennas, both dual-polarized and single-polarized, but such wireless bridges have very short transmission distances, and some can only transmit 3-5 kilometers, but we are like this. The equipment is used in unobstructed conditions.

Wireless APs are generally used to transmit network signals, while wireless bridges are used to transmit video signals. Currently, some wireless APs on the market also have the function of a wireless bridge. Although the images are equally clear and smooth when transmitting video signals, the wireless The function of the monitoring device is still very different from that of the wireless bridge, and the stability is also very different. Therefore, it is recommended to use a wireless bridge to transmit video signals.