Still worrying about slowing down WiFi? There are five pitfalls behind the scenes: wifi

Still worrying about slowing down WiFi? There are five pitfalls behind the scenes: wifi

Internet of everything makes network communication everywhere. People seem to forget what a life without a network is like, and even need to hold a business meeting online on the plane. Considering the network speed and cost, people are more inclined to choose Wi-Fi networks for access, and this process will also face some challenges, for example, problems such as old protocols and frequency bands and incorrect AP settings often lead to slow WiFi connection speeds.

Complex connection settings

WLAN wireless devices provide air wireless interfaces with global availability, low costs, and high bandwidth. However, compared with wired networks, the mobile features of wireless networks increase the verification process and complexity for interactions between the physical layer and the protocol layer. For example, a dynamically configured Wi-Fi network allows the terminal to address the AP to achieve network access. However, when multiple APs are connected, Wi-Fi may cause problems. The latter must select the AP to be associated, the AP must also determine which users are valid.

Multiple users in space are easily blocked

In general, wired connections have less physical security considerations, but wireless connections require space access. It is often said that when a large number of users use the same wireless hotspot, most of the channels provided by the wireless router are single channels, as more and more users send and request data over the same channel, the transmission speed slows down and the latency gradually increases until the maximum bandwidth reaches, resulting in disconnection and disconnection. Sometimes, multiple sites are covered by the same AP, but the signal cannot be shared. In this way, multiple parties send requests to the AP, resulting in overlapping signals.

Mobile is happy and sad

Different from leased line cables, the physical layer and protocol layer of the wireless network should be tested independently, and the actual usage of the upper layer should be demonstrated. The reason is the mobile and dynamic features of WiFi. O & M personnel should test the parameters one by one using RF signals to ensure that some "hidden nodes" run normally. For example, when WiFi is connected, the power supply end of the device must have the power management function to reduce the transmit power and save energy when it is close to the AP, while wired cables do not have such restrictions.

Keep up with security protocols

Not only communication protocols, but security protocols also plague Wi-Fi networks. For example, 802.11ac can reach a standard rate of over Mbps. However, if WEP or WPA is used for encryption, the data rate is limited to 54 Mbps. How can this problem be solved? In fact, it is not complicated. You can simply enable WPA2 Using Advanced Encryption Standard AES. If you are using an old terminal, upgrade the firmware version. Of course, it would be better to add an adapter to the terminal, or consider using a wireless bridge connected to Ethernet.

Attention should be paid to interference issues

If the network channel is unblocked and the Protocol is both considered, will the network speed be faster? None. The issue of interference between Wi-Fi devices cannot be ignored. It has been reported that the Wi-Fi problems of most residents are related to interference devices, including wireless phones, monitoring, and even microwave devices. The 802.11 protocol can resist interference to some extent, but bypassing or suspending data packet transmission will undoubtedly affect the wireless network capacity and performance. For example, a microwave oven produces 50% duty cycle interference. If the frequency is the same as that of a 802.11 Wireless Access Point, the network capacity and performance will be reduced by 50%. Research shows that microwave ovens 25 feet away from wireless access points will reduce data throughput by 64%, while frequency-hopping phones will decrease by 19%.

Conclusion

The reason behind the seemingly superficial Wi-Fi network communication is not simple. In addition to the above factors, the 5 GHz multi-channel, correct AP settings, low data rate compatibility, and other methods can all improve the WiFi connection performance. On the one hand, users should promptly discover wireless device problems, but on the other hand, it is more important for manufacturers to consider multiple users when designing wireless access products, so that users should be less worried and less hands-on.