I wonder what 80+80 does for backward compatibility with the vast amount of single chain 802.11n devices (phones, tablets). On Mar 9, 2016 9:11 AM, "Eric Muehleisen" <[email protected]> wrote:
> According to this article below, 160mhz or (80+80) is a requirement of > wave 2. > http://www.cisco.com/c/en/us/solutions/collateral/enterprise-networks/802-11ac-solution/q-and-a-c67-734152.html > > *"However, given that 160 MHz of relatively unused contiguous spectrum is > difficult to find, there is an 80+80-MHz mode, which is simply the 160 MHz > waveform split into two different 80-MHz frequency segments, enabling them > to be placed more flexibly."* > > Would imply that adjacent channels is not necessary. You could bond a > UNII-1 (80mhz) and a UNII-3 (80mhz) to create a 160mhz channel. > > > On Wed, Mar 9, 2016 at 11:05 AM, Josh Reynolds <[email protected]> > wrote: > >> Channel bonding still uses adjacent channels under 802.11ac. Most >> indoor APs in the US do not have DFS support, and most client devices >> do not support DFS. This is slowly starting to change. >> >> 160MHz is wave3, not wave2. >> >> On Wed, Mar 9, 2016 at 11:02 AM, Eric Muehleisen <[email protected]> >> wrote: >> > I've noticed in our wireless router testing that many router >> > manufacturers advertise 802.11ac wave2 support but are not certified >> > to operate in the UNII-2 bands. My understanding is wave 2 channel >> > bonds two 80mhz channels. Can UNII-1 and UNII-3 be bonded to create a >> > 160mhz channel for wave 2 certification? I thought that wi-fi channel >> > bonding had to be done using adjacent channels...no? >> > >
