What are the limitations of WIFI network coverage?
1) The wall is too thick
Usually, what is the coverage of the wireless router of the XYZ brand? Actually, it was tested in an ideal state without obstacles. In fact, the frequency of the WiFi signal is relatively high, so the diffraction ability is poor, and it will cause a large attenuation of the signal when passing through the load-bearing wall, glass or water, and the theory and facts have already been positive 5GHz WiFi signal through the wall ability weaker. Therefore, if there are multiple rooms in the room and the solid walls are thicker, it is normal to reduce the wireless signal by half or even more than two thirds.
2) Location of wireless router
The wireless routers we have seen are all products with built-in or external full-line antennas. The characteristic of an omnidirectional antenna is that it has no directivity. When the antenna is upright, it will form a signal coverage centered on the antenna, with the strongest signal around and the weakest up and down effect of the antenna. Therefore, in order to achieve greater and better wireless coverage, when placing the wireless router, ensure that the area covered by the signal reaches the maximum. But the wireless coverage upstairs or downstairs is destined to be a cup, even if the so-called "villa-level" wireless router is not obvious.
Antenna has low gain
Don't underestimate the role of antennas. Antennas are divided into directional and omnidirectional, and omnidirectional antennas are used on routers. Early wireless routers used omnidirectional antennas with a gain of 2dbi, so the effect of wireless signal coverage is more general. The current wireless routers are basically equipped with two or three 5dbi antennas, so the signal coverage and effect are effectively increased. Therefore, we can replace the higher gain antenna or wireless router with high gain antenna. The antenna of this type of router is mostly 9dbi, but the length is also exaggerated. Of course, don't go into the misunderstanding of "more antennas, more signals, better antennas, less signals, worse".
3) Low transmit power of wireless router
Talking about the transmit power of the router, this leads us to a very sensitive topic, that is, signal radiation. According to national regulations, the transmission power of a wireless router must not be higher than 100 milliwatts, but the default transmission power of some routers is only 80%, so we can try to increase the transmission power to improve the quality of wireless signal coverage. In addition, some wireless router products use the allinone chip solution, and the wireless part does not have a power amplifier module, which results in poor signal coverage and quality. Of course, this is the problem of the router.
4) Interference of surrounding signals
The wireless routers we use are basically 2.4GHz, but there are many products working in this band, such as wireless keyboard and mouse, and even microwave ovens also work in this band. Now wireless routers have become very popular, so we often find more than two wireless hotspots around us, plus 2.4GHz has only three completely non-overlapping channels, so it is very susceptible to interference, resulting in poor signal quality, When the network transmission rate is slow. Therefore, the only solution is to upgrade to a 5GHz wireless router and upgrade the device's wireless network card, but this will inevitably increase the purchase cost. The poor 5GHz wall penetration capability is also an urgent problem to be solved in the future.
The device is too far away from the wireless router
5) If this problem has to be said to be a problem, there is also a solution. Buy a wireless relay to solve the problem. The role of wireless relay is to amplify the signals of known wireless hotspots that are searched, but the wireless transmission rate will be reduced by half, which may have a small impact on wireless data transmission, but if it is only the Internet, then there is no problem of.
6) The terminal wireless network card receiving sensitivity is low
Many times we complain that the wireless signal is not good. Due to the size of the network equipment, the power of the chip and the gain of the antenna, the ability of our products to receive wireless signals is also different. Some smart mobile terminals often have lower wireless reception than our computers, while some of the more exotic devices, such as the popular wireless cards such as "card king" and "card king" that cracked wireless passwords in previous years, receive signals. The sensitivity is even several times higher than our other equipment.
Therefore, the coverage and quality of wireless signals are subject to many factors. Only the specific analysis of specific problems can find the fundamental solution to the problem. In general, the wireless signal is weak, which affects users' Internet access. The simplest solution is to replace the wireless router with high power. The terminal equipment should not be too far away from the wireless router to maintain a close distance.
If you want to know more, our website has product specifications for WIFI network, you can go to ALLICDATA ELECTRONICS LIMITED to get more information