Full explanation of Standard settings of wireless network card Devices

With the development of the communication industry, wireless network card equipment is also very demanding, So I studied the Standard settings of wireless network card equipment, here to share with you, I hope it will be useful to you. As the prices of wireless network devices keep falling, the use and access of wireless networks are gradually accepted and favored by more people; however, it is not easy to use a wireless network for efficient Internet access, because in the days when you have been in touch with the wireless network for a long time, we sometimes encounter some inexplicable failures of wireless network cards. In the face of these failures, many friends who are not familiar with wireless networks are often helpless, I don't know what measures should be taken to respond. In fact, many times wireless NICs do not work properly, which is a cause. We only need to carefully check the installation and setup operations, and we will be able to find a solution to the fault. This is not the case. I have encountered a non-Internet connection failure caused by improper Standard settings of the wireless network card. Now, this article will restore the detailed troubleshooting process of this fault, I hope you will have some inspiration!

Wireless Network unavailable

The office of the Organization has a laptop that has been in service for several years. The computer has a built-in wireless Nic device. In the past, the organization's leaders used the wireless Nic device to use and access the wireless network, however, I don't know why recently. the wireless network card device is always unable to connect to the wireless LAN of the Organization. As a result, the organization leader had to call "invite" the author to quickly arrive at the scene of the fault, it helps resolve failures that cannot be used in wireless networks.

After receiving the command from the leaders, I did not dare to neglect it. I immediately rushed to the fault site in three steps and made a step-by-step investigation on the fault site, the typical old-fashioned IBMT30 laptop was found, and its built-in wireless network card device has a transmission speed of up to 11 M. to check whether the working status of the wireless network card device is normal, click Start, set, and network connection commands. In the displayed local network connection List window, find the target wireless network connection icon, right-click the connection icon and execute the "properties" command from the shortcut menu to open the Property setting interface for the target wireless network connection. From this interface, I can see that the wireless Internet access signal is not very strong. At first, I thought that wireless Internet access was affected by external interference, specifically, the laptop is transferred to a location with a very strong online signal, that is, the location where the phone number is full during the test). The result shows that the laptop still cannot access the wireless network, it seems that this laptop does not have access to the wireless network.

Check wireless Nic settings

After excluding the above factors, the author began to transfer the suspect focus to the wireless network card device that comes with the laptop, is this the wireless network card device hardware damaged? If that is the case, I only need to replace the new wireless Nic device to solve the problem, the possibility of hardware damage to the device is relatively small. Therefore, I plan to start with the settings of the wireless Nic device to see if the device is faulty. As a result, I immediately open the Device Manager window of my laptop, find the target wireless Nic device, right-click the device, and execute the "properties" command from the shortcut menu, open the Property setting interface of the target Nic device. When I checked the "advanced" tab page, I accidentally found "802. the value of the DControl option is set to "Strict". I am very surprised to see this setting, because I know that the wireless communication standard used in the previous Wireless LAN is mainly 802.11b, working in the 2.4G Hz band, and currently the wireless communication standard used by the wireless LAN is mainly the 802.11g standard, so how can the wireless Nic device installed in this old-fashioned laptop use the 802.11d standard?

After searching for relevant information in the Internet, I found that the 802.11d wireless communication standard mainly defines some requirements for physical layers such as frequency hopping mode and channelization, in order to allow communication equipment to meet some special control requirements set by national radio. Return to the wireless network card Setting dialog box of the old-fashioned IBMT30 laptop, the author found that "802. since the value of the DControl option is "Strict", it means that the wireless network card device must strictly abide by the 802.11d communication standard when working, however, LAN wireless router devices only support wireless communication standards such as 802.11g and 802.11b. It seems that the problem is probably due to the incorrect Working Standard settings of the wireless Nic device.

After finding out the cause of the fault, the author immediately tries to set the "802" of the target wireless network card device. change the value of the DControl option to "None" or "Flexible" again, and click "OK" to save the preceding settings. Then, when you access the wireless LAN of the Organization through the Internet, I found that I was able to access the Internet normally. So far, the failure of wireless Internet access in old-fashioned laptops was completely solved.

Summary

Some laptops with professional purposes or old-fashioned laptops, its built-in wireless Nic devices are prone to incompatibility between wireless communication standards and the communication standards currently used by LAN wireless routers, therefore, it is highly concealed. We are prone to detours when solving such wireless network faults. Therefore, we must pay more attention to the working standards of wireless network card devices in the future, once the wireless communication standard is found abnormal, you may try to modify it to be compatible with 802.11g, 802.11b and other wireless communication standards. I believe this will solve some inexplicable wireless Internet access failures.