Have you ever wondered how exactly the WI-FI works? Sometimes we hear about IEEE 802.11 protocols and do not even realize that they are sold under the trademark WiFi. Let’s find out how many non-overlapping channels are available with 802.11h and what frequency is used for transmitting.
Top frequency ranges and 802.11 channels
The 802.11 workgroup operates in five distinct different frequency ranges: 2.4 GHz, 3.6 GHz, 4.9 GHz, 5 GHz, and 5.9 GHz bands. Each range is separated into numerous channels. Every country in the world have to apply their own national regulations to suit the channel’s requirements. They also need to care about power levels within the frequency ranges.
In Nigeria, 802.11a is known to have only 12 channels. The system consists of of three bands with 4 spread across each of them separated for indoor/outdoor, indoor and outdoor usage.
READ ALSO: How to unlock modem?
Recently, 802.11h added some new channels and a total amount of 23 non-overlapping channels is available now. The channels that can be used in a country largely depends on the local regulations. The recent changes in 802.11h’s have been combined with current reviews of 802.11a.
In summary, 23 non-overlapping channels are available with 802.11h these days and more than 5 different frequency ranges are used for its transmission. It is also expected that the 802.11h plan will make some new channels available really soon.
READ ALSO: How to Change Spectranet Wifi Password?
Source: Zenithblog.com
0naze
No comments:
Post a Comment