Changes between Version 9 and Version 10 of wireless/wifi

Timestamp:

01/13/2018 12:19:16 AM (6 years ago)

Author:

Bobby Jones

Comment:

Added 80211ac wave 2 to concepts section

wireless/wifi

@@ -875 +875 @@
  * [http://en.wikipedia.org/wiki/IEEE_802.11n-2009 802.11n] - added the capability of 40MHz channels referred to as 'HT' or High Throughput channels. When using 40MHz HT channels you must specify HT40- to use the current channel specified frequency and the 20MHz below it, and HT40+ to use the current channel specified frequency and the 20MHz above it
  * [http://en.wikipedia.org/wiki/IEEE_802.11ac 802.11ac] - added the capability of 80MHz and 160MHz channels referred to as 'VHT' or Very High Throughput channels
+  * Wave 2 - added an 80+80MHz configuration that could be set for two non contiguous bands to minimize interference
 
 Some drivers also support 'half' channel bandwidth (10MHz) and/or 'quarter' channel bandwidth (5Mhz) which is useful if you don't need the bandwidth provided by standard (20MHz) channels or HT/VHT channels and instead want more channel separation.
@@ -889 +890 @@
  * [http://en.wikipedia.org/wiki/IEEE_802.11n-2009 802.11n] - added additional modulation schemes to allow several more rates and introduced the concept of a Modulation and Coding Scheme (MCS) index to describe them
  * [http://en.wikipedia.org/wiki/IEEE_802.11ac 802.11ac] - added 2 additional MCS indexes for new 256-QAM modulation schemes
+  * Wave 2 - Improved on the original Wave 1 release by adding MU-MIMO and an optional 4th spatial stream, see this [https://www.cisco.com/c/en/us/solutions/collateral/enterprise-networks/802-11ac-solution/q-and-a-c67-734152.html Cisco FAQ] for more information
 
 Notes: