New
#1
what does the b/g/n in wireless devices and routers do
firstly what is their acronyms and meaning of b/g/n
then what does each letter do, in compatibility, differences, speed
firstly what is their acronyms and meaning of b/g/n
then what does each letter do, in compatibility, differences, speed
The letters designate the set of communications standard or protocol that the device in question was designed to meet and provide.
Very roughly:
- IEEE 802.11a = operates in the 5 GHz band with a maximum net data rate of 54 Mbit/s, plus error correction code, which yields realistic net achievable throughput in the mid-20 Mbit/s.
- IEEE 802.11b = operates in the 2.4 GHz band with a maximum raw data rate of 11 Mbit/s
- IEEE 802.11g = operates in the 2.4 GHz band with a maximum raw data rate of 54 Mbit/s, plus error correction code, which yields realistic net achievable throughput in the mid-20 Mbit/s.
- IEEE 802.11n = operates in both the 2.4 GHz and 5 GHz bands with a maximum raw data rate of 150 Mbit/s per channel. Uses multiple channels on multiple antennas and "streams" to achieve data rates of 300 or 450 Mbit/s (and theoretically 600 MBit/s on 4 streams).
It is, of course, much more complex than that. But that is the meat of the matter.
A device that is designated 802.11b can only do 802.11b. But a device that lists b,g, and n can do any or all of those protocols.
And coming soon will be IEEE 802.11ad. Operates in the 5 GHz band with a maximum raw data rate of 60 Gbit/s.