Improve airtime / recommended users per WiNG AP

[Richard_Augusto]

Hello,

Is there any way to prioritize the air time on the Guest network and the corporate network in a same AP?

I have used the airtime fairness feature (enable by default), but I would like to know if I can customize something to improve response time (we use SAP).

Other question as to the number of concurrent users, is there any realistic number to distribute the APs?

Does AP7632 and 7532, per example? How many concurrent users does AP recommend? The total bandwidth (unicast traffic) that should pass is 30 Mbps.

[ckelly]

-Two spatial streams (Many devices uses 1 spatial stream)
Safe estimate is that it's a 50/50 mix?

-10 or 15 APs per site (300 client concurrent users / 50 Enterprise users per site/store)
300 total users for all sites? 50 users/store? So 6 stores? And then 10-15 APs/site? (10-15 APs for a site with only 50 users seems pretty light. How big are these sites?

-My target in most site is -50/-55. Agressive because high density.
What are the -50/-55 numbers referencing?

-Band per device is 1 Mbps (limit for 30 Mbps / we use QoS)
Not sure what you are explaining here. Band per device is 1Mbps?

-18 Mbps (minimum rate)
Is this the minimum PHY rate you are wanting to achieve per user? If so, that effectively equates to a TCP throughput of roughly 7-9 Mpbs. Or are you simply stating that 18Mbps is your configured Basic rate for the WLAN config?

-Latency is very decisive for sucess!
Certain things are out of your control on the wireless side. If medium contention is an issue due to high domain contention, you can only really fix that by finding a cleaner channel. About all you can do is try to find a low contention channel and then prioritize the traffic on the wireless/wired side.

In Wired side we have specific VLAN, applyed QoS for priorize SAP server traffic (Layer 3 QoS in this case).
Ok good. In that case, are the WLANs for the SAP traffic mapped to this VLAN on the AP?

[Richard_Augusto]

Hi Chris,

-Two spatial streams (Many devices uses 1 spatial stream)
-10 or 15 APs per site (300 client concurrent users / 50 Enterprise users per site/store)
-My target in most site is -50/-55. Agressive because high density.
-We have 4 SSIDs per AP
-20 Mhz in 5Ghz
-Band per device is 1 Mbps (limit for 30 Mbps / we use QoS)
-18 Mbps (minimum rate)
-Latency is very decisive for sucess!

In Wired side we have specific VLAN, applyed QoS for priorize SAP server traffic (Layer 3 QoS in this case).

[ckelly]

Richard,

It sounds like you might be wanting to introduce prioritization for SAP traffic (QoS).
On the wired side though, is the SAP traffic given any priority? If not, then prioritizing the SAP traffic on the wireless would likely not be much help.

Regarding the number of concurrent users, there are several variables to consider. This topic can get a little lengthy to describe. It might be better if you could just supply some information and I could give you a final number.
The only number you've given so far is total unicast traffic being 30Mbps "that should pass". I'm not sure how to interpret what you are saying here though regarding what this 30Mbps is.

What sort of devices associate with these APs?

• What percentage are one spatial stream, two spatial stream?

At a minimum, how much bandwidth do you *need* to allocate to each device?
What PHY rate does these devices tend to connect at?
What channel width are you using?
What does the environment look like around these APs? Dense wireless environment? Moderate office type environment?