QUOTE(soonwai @ Sep 1 2019, 11:11 PM)
There're Wave 2 chip equipped devices which doesn't support Wave 2 features like MU-MIMO. In fact, Mikrotik has one. Can't recall which one though.
I don't just read, i do tests too. So far i've tested several 802.11ac Wave 1 devices like Nexus 5 (2014), Nexus 6P (2015) and 802.11ac Wave 2 devices like Galaxy S7 (2016), iPhone 8 Plus (2017) and iPhone Xs Max (2018) with a Aruba Networks 325 enterprise-grade 802.11ac Wave 2 access point. I do indeed experienced the
MU-MIMO in action, the devices that packs with 802.11ac Wave 2 chip are much more stable in download and they are very little interfered by other wireless client (i won't say it doesn't being interfered at all because it's a lie if i say that), on the upload side the ping is not quite stable jumping up and down around 10-15 ms, well because 802.11ac Wave 2 MU-MIMO only works in download but not upload in case you don't know. Only in 802.11ax MU-MIMO works in both downlink and uplink. Thanks to the capabilities offered by the MU-MIMO technology, the access point can serve multiple devices simultaneously instead of just one at a time.
I set a laptop with a 802.11ac Wave 2 chip just to ping to a 802.11ac Wave 2 access point, and then i use the smartphones to do download and upload speedtests and transfer files locally. As i can see the laptop still has a very stable ping to the access point, 1-2 ms most of the time, well sometimes spike up to 5 ms or 10 ms but most of the time it's performing great and i'm quite satisfied with the performance of the Aruba Networks 325 enterprise-grade 802.11ac Wave 2 access point for the price i paid
. Of course i'm not doing this in a closed space or at a desert, there are several neighbour Wi-Fi broadcasts around the airspace so there's still some wireless interference that are messing with my tests but the results are still considered satisfactory. Can't say the same with 802.11ac Wave 1 access point though, i applied the same tests but the ping spikes up to 20-30 ms and sometimes request timed out when large bits of data are travelling through the same 5 GHz band. When there is no download or upload activity, yes the ping is quite stable around 2-3 ms.
And then i take the old smartphones like Nexus 5 and Nexus 6P which comes with 802.11ac Wave 1 chip (SU-MIMO) to do the same tests, actually i feel like don't need to do it again because a few years ago i've already done those tests with a 802.11ac Wave 1 access point which were released in 2013 so i roughly know how are the results gonna end up but i'm very curious to see how is it gonna fare with a 802.11ac Wave 2 access point. In the end i didn't get the same results as i did with the previous tests i've done with smartphones that support 802.11ac Wave 2 because 802.11ac Wave 1 devices only able to take advantage of the capabilities offered by 802.11ac Wave 1 standard, the access point will fall back to backward compatibility standards for those wireless clients that do not support 802.11ac Wave 2 standard.
It's the same thing for 802.11ax wireless router or access point, sure our 802.11ac Wave 1 or Wave 2 devices can connect to a 802.11ax access point but it won't take advantage of the capabilities offered by the 802.11ax standard. In order to take advantage of a 802.11ax wireless router or access point you need a 802.11ax wireless client like the Galaxy S10 series, Galaxy Note 10 series, Intel Wireless-AX chip, or Killer Wireless-AX 1650 chip. I'm very excited to see what 802.11ax has to offer and how it's going to change the game. OFDMA is going to work with MU-MIMO and make the Wi-Fi even better and 802.11ax is all about efficiency. Btw do check out Killer Wireless-AC 1535 and 1550 though, it's worth the money. No I'm not sponsored by Killer Networking, I'm just very impressed by the performance after several tests especially the 5 GHz signal amplifiers which gives me an outstanding, solid and further 5 GHz wireless connection that i've never experienced before.
This post has been edited by Garena: Sep 12 2019, 09:36 AM 
Aug 31 2019, 08:07 PM
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