[Make-wifi-fast] Re: [Bloat] Re: [Codel] [Rpm] Re: Re: [Cake] "Fi-Wi is a new forwarding plane for wireless" - Bob McMahon

[David Lang <david@lang.hm>]

bob.mcmahon@umbernetworks.com wrote:

>> you may be able to make a dent in the AP use of airtime, but how are you 
>> going to coordinate the wifi devices you are talking to that are using so 
>> much of it, and doing most of the hidden transmitter stomping on each 
>> other? you can do channel allocation and lower the AP power to reduce (and 
>> if you can use DFS channels almost eliminate) the APs stepping on each 
>> other, but doesn't solve the mobile device coordination.
>> 
>
> David,
>
> The first answer is RRH density.
>
> With many RRHs distributed through the building, each RRH serves a smaller 
> number of STAs in a smaller physical area. STAs associated to the same RRH 
> are much more likely to hear each other, so the hidden-node precondition 
> becomes less common by construction. Hidden node requires two STAs that 
> cannot hear each other but share the same AP. Shrink the cell and the 
> geometry works in your favor before any other mechanism is applied.

to support the 3000+ users, I deploy over 120 openWRT APs, as many as 10 in a 
single room (usually 5+)

David Lang