Until now, many brothers (including myself) have a simple rule of thumb, when installing a WiFi router, if the house has many walls and obstacles or large space, the 2.4 GHz is the choice Ideally, while if the house is small, use a WiFi connection device at close range of 5 GHz. Recently an Enex study conducted by the Australian Telecommunications and Communications Agency (ACMA) suddenly discovered that the 5GHz WiFI wave is capable of outperforming 2.4 GHz even at long range. This study suggests that the 2.4 GHz band is no longer suitable for the present face with devices and internet connections.
Enex published in research report: “Previously, the 2.4 GHz band is still considered ideal for long-range connectivity. However, we found out that it was not so. Using 5 GHz band seems to be the perfect choice for users under all circumstances. The 5 GHz band is also supported by recent advances in technology, such as MU / MIMO (routers supporting up to 8 antennas and sub-channels for multiple users at the same time) or technology. wave beams are oriented. ”
The study also found one more thing: About 30% of the 43 WiFI modem devices that Enex tested failed to achieve 100Mbps in the 2.4 GHz band mode with a distance of 5 meters. “This means that users will not be able to achieve the inherent speed and performance of a conventional 100/40 FTTN / B transmission (from Australia's NBN operator, commitment to download 100 Mbps and upload 40 Mbps. ) when connecting devices via WiFI. ” Tested with a wall between the WiFi modem and the connected device, only 26% of the 2.4 GHz modems achieved speeds of 10 Mbps, and 40% achieved speeds of 80 Mbps in the 5 GHz band. In some devices, the difference in WiFi strength is up to 20 dB, and the modem is more active in the 5 GHz band.
Although this study itself was conducted in Australia, it is possible to contact to our country because at the moment there is no shortage of brothers, equipping families with high-speed fiber-optic internet lines, for example such as FPT's Super65 (65/65), or Net 5 Plus (150 Mbps) of Viettel. So if you use the old generation WiFi modems, using the 2.4 GHz band can make you unsatisfied with the capabilities that this line brings when watching movies, playing games or working through connected devices. wireless internet.