We talked about Wi-Fi a couple weeks ago. Let’s expand on that. Now they have given Wi-Fi version numbers for the different protocol types identified by the letter suffix on 802.11. Let’s start with 802.11 and what it is.
The 802.11 protocol is set forth by the IEEE (Institute of Electrical and Electronics Engineers, Inc.) They are the ones who set the standards of what is under each protocol, specifically the IEEE 802.11™ Wireless Local Area Networks, the working group for WLAN standards. They have regular sessions and presentations about 802.11 protocol. There is one being held right now in Bangkok, Thailand.
The Wi-Fi Alliance® has now assigned version numbers to different Wi-Fi protocols.
- Wi-Fi 6, which will be available next year will be 802.11ax standard.
- Wi-Fi 5 is the 802.11ac standard
- Wi-Fi 4 is the 802.11n standard
Older standards are not being given a version number because they are not widely used anymore.
Wi-Fi Certified WiGig™ will bring bands of 60 GHz with multi-gigabit speeds, suitable for virtual reality and HD streaming. Wi-Fi security WPA3™ will have increased crytographic strengths.
Sources and Further Reading:
We recently upgraded our Wi-Fi through our provider. What was new was we noticed two different bands to choose from. One was just a regular band (at 2.4 GHz) and a new one showing as 5 GHz. So what is the difference? Let’s find out.
Coming right to my mailbox, I received a newsletter and there was an article referenced to it. So let’s go over it.
First we learn that 2.4 GHz will support up to 450 Mbps or 600 Mbps dependent on router class. That comes with the standards you may see on router boxes as 802.11b, 802.11g, 802.11n, or 802.11ac. Not sure what mine was since it’s not printed on the box itself, I found the manual for it online and found it has all the above! So let’s chase this rabbit and find out what the difference between these classes are.
802.11b was better than the original 802.11 standard in July 1999. It brought the speed up to 11 Mbps. 802.11g, brought about in 2002, is supported by all devices and network equipment and supports up to 54 Mbps bandwidth. It is the least expensive to buy and run. 802.11n came about in 2009 and gives up to 800 Mbps bandwidth, an improvement over 802.11g but a little more expensive than 802.11g. 802.11ac has the fastest maximum speed and best range but more expensive. It uses dual-band wireless – thus the 2.4 and 5 GHz we can now see. Its bandwidth is 1300 Mbps on 5 GHz and up to 450 Mbps on 2.4. This is also called Wi-Fi 5. There are a few other 802.11 standards. 802.11ad is fast but the device must be within 11 feet. 802.11ah is a lower energy but goes beyond the reaches of 802.11ac.
So now I’ve learned that I am seeing two bands because of the 802.11ac standard. The 2.4 GHz band happens to be used by other things as well. Old cordless telephones as well as garage door openers and baby monitors for instance. The 5 GHz band has fewer connections and higher speeds, however the shorter waves makes it harder to penetrate walls. You may need to use extenders for this band. If your device can use ethernet, then that will be the best connection you can have. The 5 GHz band is best used for streaming where you would experience less interference.
802.11 Standards Explained
Difference Between 2.4 GHz and 5 GHz