Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

On 30/08/18 22:36, bkil wrote: > 1b. > Let's assume that we are a good citizen using more expensive highly > directional antennae and we live at the perimeter. Considering that For some reason I only received this today. Your points about the use of directional antennas should be mitigated, at

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Yes, I've read that part in the past. These are very good rules of thumb, but there are many inefficiencies to cope with. Note that not all wireless users are "rude" on purpose. It's just that if you want to keep in touch with your relatives in the nearby town, you use the minimal needed power

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Full-duplex still needs some work, but there is definite progress: http://www.ti.rwth-aachen.de/~taghizadehmotlagh/FullDuplex_Survey.pdf https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/TR-1.pdf https://sing.stanford.edu/fullduplex/

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

I've only skimmed through, but as I see it, many points have already been addressed. TV went digital, large parts of the spectrum freed up for other purposes while allowing to transmit in local whitespaces where available: https://en.wikipedia.org/wiki/IEEE_802.11af#Spectrum_regulation As a

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Agreed that incentives are non trivial. I found this article about bike share redistribution interesting: New York's bike share system pays rider to make it run better Bob On Thu, Aug

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Minimizing power is rule #2 per Paul Banan. SOME KINDERGARTEN RULES (written in 1994) To take the fullest advantage of our new technology with its sharing of a common resource requires that our smart transmitters and receivers cooperate. This may sound complicated, but the rules to make

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Hmm, not sure I understand the distinction. CTS per the AP informs those other transmitters to stay quiet per the CTS NAV. I may be misunderstanding things. Thanks for the continued discussions. It helps to better thoroughly understand the issues. Bob On Mon, Aug 27, 2018, 6:52 PM David

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

I thought that RTS/CTS would handle the case of hidden nodes, i.e. a device that fails to successfully transmit can resort to RTS/CTS to get the receiver to reserve time for it. Also, lack of a RX ack seems ok to trigger MAC level retransmits. It seems the LBT bug is the collision avoidance

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Indeed - and conversely, there may be interference that the transmitter can hear clearly but which is irrelevant to the intended receiver. In that case, any form of LBT will be needlessly conservative. - Jonathan Morton ___ Bloat mailing list

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

ok thanks, that's helpful. I guess I thought if astrophysicists can direct image exoplanets a WiFi device should be able to detect superposition - though, talk about some giant hand waving! ;) Bob On Mon, Aug

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

> On 27 Aug, 2018, at 10:11 pm, Bob McMahon wrote: > > I guess my question is can a WiFi transmitting device rely on primarily > energy detect and mostly ignore the EDCA probability game and rather search > for (or predict) unused spectrum per a time interval such that its digital > signal

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

I guess my question is can a WiFi transmitting device rely on primarily energy detect and mostly ignore the EDCA probability game and rather search for (or predict) unused spectrum per a time interval such that its digital signal has enough power per its observed SNR? Then detect "collisions"

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Hi Jonathan, I think in 802.11ax the AP can schedule STAs to some extent so it looks like that technique is coming soon. It is a bw tradeoff per the RUs per user. Multi-User Uplink Operation To coordinate uplink MU-MIMO or uplink OFDMA transmissions the AP sends a trigger frame to all users.

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

> On 27 Aug, 2018, at 10:06 am, Bob McMahon wrote: > > How can a centralized device predict the many "end stations'" network demand > in its time scheduling? DOCSIS does it by initially giving stations a tiny window into which to send requests for time, which are granted by the head-end.

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Hi Bob, I meant licensed/unlicensed for private/non private. Luca On Mon, Aug 27, 2018 at 9:39 AM Bob McMahon wrote: > Hi Luca, > > What is non private spectrum defined as per "I don't yet see how a non > private spectrum can be shared w/o LBT." > > Thanks, > Bob > > > > > On Mon, Aug 27,

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Hi Luca, What is non private spectrum defined as per "I don't yet see how a non private spectrum can be shared w/o LBT." Thanks, Bob On Mon, Aug 27, 2018 at 12:24 AM Luca Muscariello < luca.muscarie...@gmail.com> wrote: > Jonathan, > > Not that giant handwaving though. > IEEE 802.11ax

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Jonathan, Not that giant handwaving though. IEEE 802.11ax makes use of "almost TDM" RTS/CTS and scheduling. The almost is necessary as it operates in 2.4/5Ghz bands. Similar to what you describe, and is coming very soon in shipping products. RTS/CTS is still a LBT to create a window where TDM

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

hmm, "going back" to TDM, doesn't that lose the benefits and efficiencies per statistical multiplexing? How can a centralized device predict the many "end stations'" network demand in its time scheduling? Note: I think with 802.11ax this is happening to some extent per uplink OFDMA but that

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

> On 27 Aug, 2018, at 9:00 am, Bob McMahon wrote: > > Curious to how LBT can be solved at the PHY level and if the potential > solution sets preserve the end to end principle. The usual alternatives include TDM, usually coordinated by a master device (eg. the AP); full-duplex operation via

Re: [Bloat] [Make-wifi-fast] [Cerowrt-devel] closing up my make-wifi-fast lab

Curious to how LBT can be solved at the PHY level and if the potential solution sets preserve the end to end principle. Bob On Sun, Aug 26, 2018 at 5:26 AM David P. Reed wrote: > Baran: I got the year wrong. I remember it as 1993, but it was 1994 CNGN > speech he made, which is resurrected