ePMP 4k and OFDMA and other questions

Products ePMP
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I was going back through some old Camibum webinar slides from 2023 for ePMP 4k and had some questions about what was mentioned in the slides and what is currently working in ePMP 4k radios.

OFDMA - The webinar mentioned 2 advantages of OFDMA

  1. Small packet grouping in the OFDMA PPDU to improve efficiency and capacity.

PPDU
PPDU843×430 69.1 KB

  1. Preamble Puncturing - This technique can boost throughput in crowded environments where narrow-band interference is common, preventing, for instance, a 20 MHz neighbor-network signal from killing a 160 MHz link.

OFDMA
OFDMA838×449 53.4 KB

Are both those features currenlty active in the latest FW? Maybe I misunderstand the preamble puncturing, but I know I have had many times where 40mhz of interference on 1/2 of an 80mhz channel (mostly AP side) has killed performance so much I have had to change to a smaller channel using Asymetrical UL.

The other question is about MU-MIMO. Early presentations said ePMP 4k would support both DL and UL MU-MIMO. I know DL MU-MIMO is working and that the 4500 due to current HW limitations only can do MU3 and not MU4 that was mentioned originally. That is understandable as sometimes the reality of the hardware and its limitations are not fully known early on. Is UL MU-MIMO still on the table for a future feature, or has that been changed as well because of unforseen HW limitations.

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Nothing? I guess I have to assume all presented OFDMA features are currently not implemented.

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The answer is yes, at its core OFDMA is being used, and from what I understand, it’s a tool box of features, and there are some features that are not currently enabled…. like preamble puncturing isn’t enabled.

I think there are plans for uplink MU-MIMO, they’re low priority.

I’m hoping that @Sakid_Ahmed can add some more details.

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I am not against some features being disabled or lower priority over getting what is considered core features working correctly.

Knowing though what features that were originally mentioned or marketed that are not currently active is helpful to me as is knowing if they plan to add them at some point or if they found they did not pan out as originally thought.

I just do not like it when vendors (UI LTU) market features then never implement them and then pretend they never existed in the first place.

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