Application point of view: in-depth exploration of wireless route Transmission

Many people may not understand the concept of wireless route transmission. Here we mainly analyze the wireless network transmission principle and its impact on the wireless route performance. From dial-up access to Wired Broadband, from Wired Broadband to wireless networks, the development of the network is changing with each passing day.

With the gradual maturity of wireless routing technology, the price of wireless network equipment is getting lower and lower, and there are no fewer households that build wireless LAN at home. However, most consumers may not know much about the principle of wireless route transmission and how to increase the coverage of wireless signals. So let's have a chat today.

Let's take a look at the principles of wireless networks. Wireless networks are the product of the combination of computer networks and wireless communication technologies. It provides an effective technique to support communication between computers using wireless multi-access channels, it also provides potential means for mobile, personalized, and multimedia applications of communication. Generally, any computer network that uses wireless route transmission is called a wireless network. From WLAN to Bluetooth, from infrared to mobile communication, all of these are examples of wireless network applications. It does not use traditional cables to provide all functions of traditional wired LAN. The infrastructure required by the network does not need to be buried in the ground or hidden in the wall. The network can be moved or changed as needed. To put it bluntly, it is the Wireless connection form of the LAN, that is, the Wireless Local-area Network (WLAN). We often see that WLAN refers to the Wireless Network.

Principles of wireless network transmission

Similar to common wired networks, wireless route transmission uses an ISO/RM layer-7 network model, which is only in the two lowest layers of the model: Physical Layer and data link layer, wireless transmission is used. Although the standards and specifications of various types of wireless networks are not uniform at present, their wireless route transmission methods must be one of the following two types: radio wave mode and infrared mode. The infrared transmission method is currently the most widely used wireless network technology. Currently, almost all Home Appliance Remote controls that are frequently used in household appliances use the infrared transmission technology. As a wireless LAN transmission method, the biggest advantage of infrared transmission is that it is not affected by radio waves, and the use of infrared rays is not restricted by the National Radio Management Board. However, the transmission quality of infrared transmission is greatly affected by the distance, and the penetration of infrared rays to non-transparent objects is also very poor, this directly causes the infrared transmission technology to become the main character in the computer wireless network. In contrast, radio wave transmission is widely used. Radio waves are used for wireless route transmission, which not only covers a large range, but also features high transmission power, as well as concealment and confidentiality. It does not interfere with systems of the same frequency and has high availability.

Many users may have this question: is there any radiation in the wireless network? The answer is yes, but you can rest assured that the average output power of a wireless LAN device is less than mW. Let's make a comparison: when we call or send text messages via a mobile phone, the output power range is 600 mW, and the handheld walkie talkie may reach 5 W. Wireless LAN devices have much lower output power than the above two products, and wireless LAN does not need to be as close to the human body as a mobile phone or walkie talkie, so there is no need to worry too much during use.

Some friends always complain that the wireless route transmission range of their products is too small, there is a dead corner of the signal at home, or it is often unstable, or dropped. In fact, the range of 54M products is almost the same. If there is no interference, several hundred meters will not be a problem. But it is placed at home, with too many obstacles, glass and walls. In fact, the most intense blocking signal is the metal. If there are many metals in your load-bearing wall, it is normal that the signal is much weaker. However, a vro is enough for a 100-square-meter house.

Many of my friends who set up a wireless LAN complain that the signal coverage of their home wireless route is too small, there is a dead-end signal in the home, or the network is unstable, and frequent disconnection. In fact, the signal coverage of the 54M wireless route commonly used by the household is sufficient for the common household. However, in actual use, the signal may be affected by some objective factors such as the environment, which is unavoidable. There are too many obstacles in the House, and glass and walls will cause attenuation of wireless signals. In fact, the most intense blocking signal is the metal. If there are many metals in your load-bearing wall, it is normal that the signal is much weaker. However, a vro is enough for a 100-square-meter house.