The real speed of the 802.11n wireless network card

The speed of the wireless network depends not only on the surrounding wireless network environment. There are also factors affecting network speed in hardware configuration. So what is the specific reason? The following is a detailed analysis of the speed of the 802.11n wireless network card.

The descriptions in promotional materials on the market are generally the most ideal data transmission. There are often deviations in actual situations. For example, in the promotion, the transmission rate of the wireless N network is set to 300 Mbps, but the actual use may only be 100 Mbps. You need to use other test programs to obtain the real value. Before solving the network speed problem, we must consider that the standard of 802.11n wireless network card is not a perfect version, and its products need to be improved.

1. Make sure you are using the new adapter.

When using an 802.11n wireless network card, if the maximum data transmission rate you see is 54Mbps or lower, you should first check whether the wireless N adapter or the old wireless G network card is used.

The old adapter can connect to the new N device, but the network performance and speed will be greatly reduced. Therefore, update the wireless device.

2. Verify that the hardware is from the same manufacturer

The reason why the Wi-Fi Alliance needs to authenticate wireless networking products is to ensure that all vendors develop devices simultaneously.

However, some features are proprietary to individual vendors and must be used together. In addition, wireless N devices may involve more interoperability issues.

One reason is that the official standards need to be improved is that suppliers are also launching trial products. You should use a network device of the same vendor as the 802.11n wireless network card to avoid possible problems.

If you have not selected a preferred brand, try your own special wireless device. For example, if you want to use a wireless media extender to send photos, videos, and music to a TV from a computer, you may need to select devices of different brands. Therefore, you can find the product that suits you. After selecting a brand, you should also search for related comments online to make a trade-off.

3. Use WPA2 encryption only

The wireless N standard does not support WEP, so the connection speed with this type of encryption is limited to 54 Mbps, even with N standard devices.

In addition, the first WPA version cannot even provide maximum wireless performance on N networks. Therefore, you should use WPA2 encryption technology for individuals or enterprises.

If your adapter is an old product that only supports WEP encryption, check the vendor's webpage for driver updates to ensure that the Window is up to date. If this does not help, you can change to a new wireless network card.

Enter the IP address in the browser, log on to the routing configuration tool, and change the encryption settings. The default IP address and password should be listed in the document. Find the Wireless Settings and change the encryption type.

4. Change the default bandwidth to get an efficient network speed

If you have installed an 802.11n wireless network card and completed the above changes, the speed does not exceed 130 Mbps, you may want to change the default bandwidth. To reduce network interference with old WiFi devices, both the wireless N route and Access Point use the 20 MHz band.

Some of wireless N's performance has increased because it has been converted to a 40 MHz band, known as Channel Bonding ). Therefore, to reach the maximum speed, you must first change this default setting.

Open a browser and enter the IP address of the route to log on to the configuration tool on the Web interface to enable channel binding. Find the Wireless Settings and select the 40 MHz band. Finally, remember to save the changes.

5. Disable the wireless G client to improve the performance of the N network.

The wireless N network is backward compatible with the wireless G network and even the B standard network. However, when the old adapter is connected to the N network, the traffic in the network is managed separately. Such compatibility has a negative impact on speed and performance. Therefore, if your transmission speed does not reach the required level, make sure that the network is only available to wireless N clients. Log on to the configuration tool on the Web interface and change the wireless settings.

If you want to support wireless B/G customers, consider using the previous wireless G routing or access point. You can connect a wireless G route or access point to the backend of a new ingress. If you use channel binding on N routes, make sure they are all placed in non-overlapping channels: Or 11; or 1 or 11. Then confirm that only N standard connections are used for the new route.

6. Use the 40 MHz band only when the signal is strong

As mentioned above, when using an 802.11n wireless network card, the frequency band must be converted to 40 Mhz to make the wireless N network speed exceed 130 Mbps. However, if the network signal of all users is poor, you may reconsider whether to enable channel binding. Because it does reduce the user's signal.

7. Check network Interference

Like other wireless G networks, you should be concerned with common network interference problems, such as whether the channels used by neighboring Access Points interfere with the network; whether other radio and electronic devices interfere with the network.

However, the wireless N network may have another problem. Remember, if you change the default channel frequency from 20 to 40 MHz, the signal sending frequency range doubles.

If you use channel binding, you cannot use two channels in three typical non-overlapping channels. Therefore, you must confirm that you only need to use Channel 1 or 11 on all access points. Check the signal to see if there are other networks nearby, and then select a channel as needed.