Hi Alfred,
Can you add the following in the joint queue?
11-20/1826r8 PDT Joint Spatial Stream and MIMO Protocol, Wook Bong Lee (Samsung)
Currently 11-20/1826r6 was motioned and accepted.
11-20/1826r7 was SPed and accepted during last PHY call (only three changes, Nsts,ndp to Nss,ndp).
Rui Cao is working on updating 11-20/1826r8 to include Partial BW Info.
We will upload it soon.
Best regards,
Wook Bong Lee
Hi, Wook Bong
Thanks for the answer. I think it is good to have something in the BW subfield of MIMO Control Field for the definition of the BW. It
is a BW subfield but we only have a description about how to look up the Partial BW Info, so I think we’d better have a definition and description on the BW subfield itself.
How about this?
Indicates the channel width which the CSI information is calculated with. It corresponds to the Bandwidth of NDPA, and is used to
determine the starting and ending subcarrier indices when interpreting the Partial BW Info subfields.
Set to 0 for 20 MHz
Set to 1 for 40 MHz
Set to 2 for 80 MHz
Set to 3 for 160 MHz
Set to 4 for 320 MHz
And, I think the following text you quote needs to be updated as well in the appropriate section.
The RU Start Index subfield and RU End Index subfield depends on the bandwidth of the
HE EHT NDP Announcement frame, which is indicated by the
TXVECTOR parameter CH_BANDWIDTH if the frame is carried in an EHT, HE, VHT or HT PPDU and by the TXVECTOR parameter CH_BANDWIDTH_IN_NON_HT if the frame is carried in a non-HT duplicate PPDU, and is 20 MHz if the frame is carried in non-HT PPDU.
The values of the RU Start Index subfield and RU End Index subfield are each selected from the following:
Regards
Junghoon
Hi Junghoon,
Thanks for this.
In legacy, it is true there is no BW field in NDP-A, but interpretation of BW is same as NPD-A BW. Please see following text.
The RU Start Index subfield and RU End Index subfield depends on the bandwidth of the HE NDP Announcement frame, which
is indicated by the TXVECTOR parameter CH_BANDWIDTH if the frame is carried in an HE, VHT or HT PPDU and by the TXVECTOR parameter CH_BANDWIDTH_IN_NON_HT if the frame is carried in a non-HT duplicate PPDU, and is 20 MHz if the
frame is carried in non-HT PPDU. The values of the RU Start Index subfield and RU End Index subfield are each selected from the following:
So, in my opinion, we can do similar way as in legacy.
Relying on NDP’s BW field is too late for some implementation.
Best regards,
Wook Bong Lee
Hi, Wook Bong
I have a comment on the page 10 of PDT 1826r4.
In the BW subfield, I think we need a clear definition on how to set the BW in the MIMO Control Field, because it is an important information
to look up the Partial BW Info. There is no BW subfield in the NDPA, so it may confuse each STA on how to set the BW subfield in the MIMO Control Field. It looks like a common sense to be equal to the BW of NDP frame.
So, my suggestion is below.
Indicates the channel width which the CSI information is calculated with. It corresponds to the PPDU BW subfield in the U-SIG of NDP,
and is used to determine the starting and ending subcarrier indices when interpreting the Partial BW Info subfields.
Set to 0 for 20 MHz
Set to 1 for 40 MHz
Set to 2 for 80 MHz
Set to 3 for 160 MHz
Set to 4 for 320 MHz
Regards
Junghoon
Hi Alfred,
I updated below PDT.
11-20/1826r4 PDT Joint Spatial Stream and MIMO Protocol, Wook Bong Lee (Samsung)
Please add it in the joint queue.
Thank you.
Best regards,
Wook Bong Lee
Alfred,
I have uploaded document 1429r3, “Enhanced Trigger Frame for EHT Support”
I would request to discuss this on the Wednesday Joint call.
Regards,
Steve
Hello all,
I uploaded an updated version of the agendas, which contains the agenda for the next conference calls, scheduled on Monday, December 07 (MAC/PHY), 10:00-12:00 ET and Wednesday,
December 09 (JOINT), 10:00-12:00 ET.
The agendas can be found here:
DIAL IN DETAILS FOR MONDAY:
Meeting number: 173 579 5633 Meeting password: wireless (94735377 from phones and video systems)
Meeting number: 173 857 4060 Meeting password: wireless (94735377 from phones and video systems)
Meeting number: 173 424 8344 Meeting password: wireless (94735377 from phones and video systems)
Please let me know if you have any questions and/or clarifications.
--
Qualcomm Technologies Inc.
Office #: +1 858 658 5302
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