I think the link efficiency is relative to the current mod mode.
So you can have a high efficiency, even if you're only getting QPSK
modulation.
Conversely, if you're getting poor efficiency but modulation at 256QAM,
it can "look" worse.
In my opinion, the efficiency should be relative to the highest mod
mode, regardless of which mod mode you are running in.
So an 8X/1X at 100% efficiency doesn't look better than 50% efficiency
at 8X/8X.
That would make 100% efficiency at 8X/1X look like at least relative to
the total theoretical throughput instead of looking stellar at a
piss-poor modulation mode.
bp
On 10/8/2014 12:03 PM, Eric Muehleisen via Af wrote:
I understand the difference in uplink. My concern is why the SM with
better downlink efficiency delivers much lower throughput. I've seen
this on other AP's as well. Maybe I'm missing something.
On Wed, Oct 8, 2014 at 1:53 PM, George Skorup (Cyber Broadcasting) via
Af <af@afmug.com <mailto:af@afmug.com>> wrote:
Your screenshots appear to be from the SM linktest pages. Notice
one is transmitting 4X, thus the 9Mbps uplink. The other is 6X and
14Mbps uplink.
For the downlink, look at the AP's session page to see what it's
transmitting to those SMs and you'll have your answer.
On 10/8/2014 1:38 PM, Eric Muehleisen via Af wrote:
https://dl.dropboxusercontent.com/u/1578608/Public/450_linktest.jpg
Two different SM's on the same AP with very similar signal
qualities, QoS, etc. However, the linktests are vey different.
Has anyone see this before? Software 3.1.3.
