Shulou(Shulou.com)06/01 Report--

Many enterprises and public places provide WiFi services to employees or customers, but network administrators will soon find that most people complain that WiFi is too slow to use. It is clearly a 100m dedicated line, but the speed is about the same as dialing speed. What is the reason for this? Today, we will analyze how much traffic it needs to surf the Internet by mobile phone from the perspective of network application.

The speed of wireless also depends on the signal strength, channel interference, number of machines and other factors of wireless AP. There are a large number of technical articles in these aspects, so we will not repeat them. This paper mainly explains the occupation of wireless bandwidth from the perspective of network applications.

As pictured below, this is an ordinary Huawei Android phone that has cleaned up all the app.

Connect to the Internet WiFi, a magical scene appeared, the occupation of real-time bandwidth instantly to the 3.5M/s, that is, 28Mbps. This bandwidth usage will last for a few minutes, and then slowly come down.

From the real-time traffic monitoring of WFilter, we can see that although the application memory has been freed, there are still many background applications running. As soon as these background applications detect the WiFi network, they will immediately carry out some network operations, such as application update download, video download and so on. Thus taking up a lot of bandwidth.

With the bandwidth consumption of the Huawei 28Mbps, four phones can easily consume 100m of bandwidth. This is an important reason why WiFi is slow.

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