Exploration of wireless router transmission rate

The use of wireless networks is no longer familiar to many of our network users. However, to improve the transmission efficiency of the network, we need to study it in detail. Many of our friends have found that our actual wireless router transmission rate is not as fast as described above. Why? Is it a false identification made by a merchant? Otherwise, let's take a look at the article for details.

Wireless LAN, also known as WLAN, has become a networking method for more and more users. Wireless Network installation is very convenient and does not require rewiring. Therefore, it will not damage the original decoration of the home. Compared with wired networks, wireless networks are much more flexible.

During use, we found that although WLAN does not have the trouble of wiring, and it is also very convenient to use, sometimes we will find that its signal is not stable and the data transmission speed is slow, basically, it is difficult to achieve the corresponding nominal wireless router transmission speed. For example, a WLAN Network with a nominal value of 54 Mbps (in fact, the wireless router transmission rate is around 20 Mbps), but it shows that the transmission speed is only 11 Mbps (the actual transmission rate is around 4 Mbps), 5.5 Mbps (the actual transmission rate is around 2 Mbps) or lower. What should we do at most in this case?

First, let's take a look at the reasons for slow data transmission in wireless networks. Radio waves can easily be disturbed by various obstacles and interference sources in the air, this naturally slows down the WLAN transmission speed. In addition, the wireless network transmission distance is limited, although the general nominal wireless router transmission distance can reach 100 ~ 300 meters, but in actual use, if there is a barrier, this distance will be sharply shortened and will cause data transmission to slow down.

Knowing the cause of slow transmission speed, we can solve this problem in a targeted manner. First of all, we need to grasp the layout. It is best to see between a wireless router and a computer equipped with a wireless network card to avoid wall blocking between them, especially the load-bearing wall (reinforced cement wall ). We know that in order to reduce the radiation to the human body, the power of the wireless router is generally not large, so the capacity is subject to interference from nearby electronic devices during use, therefore, when setting the placement of wireless routers, we must remember to stay away from microwave ovens, refrigerators, and other household appliances.

A good antenna is also an effective way to ensure the wireless transmission distance and Stability of routers. Some high-end wireless routers use dual antennas, generally, multi-antenna products are more secure than single-antenna products in terms of transmission performance. If possible, we try to choose dual-antenna or more antenna wireless routers. In addition, the antenna gain has an important impact on data transmission. Common routers generally only have 2dBi omnidirectional antennas, however, many high-performance wireless routers are indeed equipped with 3dBi or 5dBi omnidirectional antennas. Undoubtedly, in the same environment, the performance of wireless routers using 5dBi omnidirectional antennas must be better than that of 2-3dBi omnidirectional antennas. Therefore, we can use a high-gain antenna to improve the wireless signal.

Matching between a wireless router and a network card is also an important factor in improving the speed of wireless data transmission. We know that, currently, the wireless transmission standards on the market include 802.11G, G +, N, B, and many other standards. For example, the router we use adopts the 802.11G + standard of Mbps, however, the wireless network adapter uses the 11 Mbps (802.11b) standard, so the actual speed must not reach 108 Mbps. In this case, we need to upgrade the network adapter to achieve the best compatibility. When purchasing related products, we must select the same standard wireless router and network card, in order to minimize the occurrence of compatibility issues.

We have introduced the impact of hardware on the transmission speed of the wireless router. In terms of software, reasonable settings are also conducive to providing the data transmission speed of the wireless route. We know that most wireless routers now support WEP or WPA encryption. Although encryption effectively improves the confidentiality of the home network, it will affect the data transmission speed more or less, WEP or WPA encryption does not play a major role in general home wireless networks, so we can disable or disable this function. In addition, sometimes we can connect to the Internet to upgrade the driver of the wireless router to Improve the Performance of wireless transmission.