Many factors can cause the wireless network to slow down

The data shows that in the first half of 2013, the average download speed of China's fixed broadband network was 2.93 Mbit/s, and by the end of 2017, it reached 19.01 Mbit/s. In five years, the average download speed of fixed broadband in China has increased by 6.5 times. Although the data has increased significantly, However, judging from the actual usage, many people do not feel that the speed of wireless network has been improved too much. Some people even feel that they are getting slower and slower. Many people in the industry pointed out that various factors can interfere with the wireless network and cause the signal to slow down.

In terms of network service providers, broadband is actually divided into two types: exclusive and shared. The speed difference between the two is relatively large, but operators generally do not specifically emphasize it.

Guo Shujun, a professor at the Communication Engineering College of North China University of Technology, told reporters that exclusive use of broadband is usually used by units. Internal sharing is for example a campus network. The networks used by ordinary households are shared networks, or secondary agents are exclusive to an agent (wholesale ), then share to users (retail), the more users, the slower.

'Exclusive broadband has higher value, but many home broadband is shared. If your home network speed is not up to expectations, it is recommended to call to ask the operator specific access form.'

From the point of view of transmission mode, wired transmission uses the 'full duplex mode' and wireless transmission uses the 'half duplex mode'. Ma Yan, associate professor of the Institute of Network Technology of Beijing University of Posts and Telecommunications, told the Beijing Science and Technology News reporter, in semi-double In the work mode, data cannot be transmitted in both directions, and the direction of transmission is also controlled by the data terminal equipment. Therefore, only from the basic principle, the wireless network itself has been 'lost on the starting line'.

▲ Place the wireless router in the center of the room so that the network signal can cover other rooms (pictures from the network)

The complex environment is also worthy of attention for signal blocking. Although the transmission of wireless signals is all over 100 meters, the transmission bands are all wireless microwaves. The biggest feature of this type of microwave is that it is nearly linear, and the diffraction ability is very weak. They are crowded and not wide enough. The walls of the room are the main obstacles. If the obstacles are very severely blocked, or there are too many obstacles with the wireless router, for example, the router is placed in the corner of the bedroom, and the people are in the living room. At one end, it's no surprise that the wireless signal is poor.

In the aspect of network resource providers, the current problems are also very obvious. It is understood that many network resources currently have limited user service bandwidth due to network service providers, limiting the number and rate of links, even if the user's access rate is higher. Can not get the appropriate experience.