How to display the wireless router rationally

When the home user deploys the wireless network, the wireless network's signal interference, the transmission distance, the coverage and the penetration, the communication performance and so on have puzzled everybody. The following talk about the impact of home wireless network factors, as well as through the rational placement of wireless routers to avoid interference, improve network performance.

1, the wireless signal interference

Because wireless LAN wireless radio frequency uses the ISM (industry, science, medicine) wireless frequency band, among them 802.11b, 802.119 Standard uses is the 2.4G frequency band, the 802.11A standard uses is the 5.8G frequency band. Therefore, the wireless LAN will be affected by the RF interference of some bursts of wireless equipment in the actual operating environment. such as microwave ovens, Bluetooth mobile phone signals are in the 2.4G band.

So when you work in a wireless LAN, you suddenly open a microwave in its area, or a Bluetooth phone using a Bluetooth headset, or suddenly there are other wireless devices running in the same band that interfere with wireless LAN wireless signals. Wireless network's physical environment changes, such as the wireless AP and wireless clients suddenly have a large obstacle movement occurred, and so on, will directly lead to wireless LAN network performance caused a sudden large reduction, and directly lead to wireless signal interruption or speed down.

Another interference is from the wireless LAN itself, which is the same frequency of different channels of interference. This interesting situation occurs in the home user and can only be interfered with by the wireless AP of the adjacent or similar buildings on the same floor. The adjacent wireless AP devices should use a different channel without interference. such as: 802.11b, 802.11g using a difference of five bands of channels can eliminate interference, the typical interference-free channel is set to 1, 6, 11 channels respectively.

2, wireless signal coverage and penetration

Family environment, the distance is shorter, the general Wireless LAN devices are known as transmission distance of more than 100 meters, so the signal transmission distance is not a problem. But the family environment has brought a new problem, that is the family space is more crowded, the space is not open, in which the walls of the room is the main obstacle. Because Wireless LAN uses the wireless microwave frequency band. The most characteristic of microwaves is that it is almost linear and the diffraction ability is very weak, so the wireless receiving device behind the obstacle receives a faint signal or does not receive a signal. What about penetrating?

This is a lot of netizens most concerned about the problem, we all hope that wireless signal can penetrate at least inside the wall. To improve the ability of wireless signal through the partition, the effective way is to improve the antenna gain, we choose wireless AP when the best choice of antenna gain high product, generally at least 2 dbi above for good. According to experience, the 2DBI gain antenna signal can penetrate two walls. If the room is too much, through the partition is more, preferably the device is the antenna can be removed in order to configure a high gain antenna, such as 5dBi to replace the Omni antenna to enhance.

A barrier to a metal object, not only blocking the microwave wireless signal, it can also be absorbed by the electromagnetic energy, generate weak current discharge, therefore, no wireless signal in the home environment the largest metal object obstacle is the floor of the steel mesh, the direction of the signal almost no penetration of the possibility. To penetrate, the signal is also very weak. Such a large size of obstacles, the microwave diffraction is even more impossible. If the antenna is placed in the middle of the room, the wireless signal can only be emitted from the window in a straight line from the open path.

After all of the above factors we know, we have to choose the best place for the wireless AP. The requirements for this drop point are as follows:

First, the position should be higher, in order to lower the radiation in higher places, reduce obstacles to stop, as far as possible to reduce the signal blind area;

Second, the location of the choice should be to make the signal as little as possible through the partition, preferably in the room wireless clients can be seen between the wireless AP.

Therefore, wireless AP home in the best placement point should be selected in the living room, and the best in the room with the computer host visual.