Hi all,
Last meeting, the agreement is to prepare a better language regarding RU allocation SPs. Hence I have prepared a revised
version with the updated SPs.
https://mentor.ieee.org/802.11/dcn/20/11-20-0609-02-00be-further-discussion-on-ru-allocation-subfield-in-eht-sig.pptx
The first two SPs are also pasted here. All your comments are welcome.
SP1:
Do you agree to add the following to the 11be SFD:
l
An RU Allocation subfield that is present in the Common field of the EHT-SIG field of an EHT PPDU sent to multiple users, indicates RU assignment,
including the size of the RU(s) and their placement in the frequency domain, to be used in the EHT modulated fields of the PPDU in the frequency domain.
o
Compressed modes are TBD.
Discussion:
Note in 11ax specs, we have the following description:
Each RU Allocation subfield
in an HE-SIG-B content channel corresponding to a 20 MHz frequency segment
indicates the RU assignment, including the size of the RU(s) and their placement in the frequency domain, to be used in the HE modulated fields of the HE MU PPDU in the frequency domain, also indicates information needed to compute the number of users
allocated to each RU, where the subcarrier indices of the RU(s) meet the conditions in Table 27-25 (RUs associated with each RU Allocation subfield for each HESIGB content channel and PPDU bandwidth).
For SP1, I just try to follow 11ax without mentioning too much details.
Note We also have the following passed motion as a baseline:
l
An RU Allocation subfield is present in the Common field of the EHT-SIG field of an EHT PPDU sent to multiple users.
o
Compressed modes are
TBD.
o
Contents of the RU Allocation subfield are
TBD.
[Motion 57, [9] and [25]]
SP2:
Do you agree that the mapping from the TBD-bit RU Allocation subfield to the RU assignment, contains the following entries:
l
The RUs highlighted in orange means combination.
Table XX RU Allocation subfield
|
order
|
#1
|
#2
|
#3
|
#4
|
#5
|
#6
|
#7
|
#8
|
#9
|
Number
of entries
|
|
|
TBD
|
26
|
26
|
26
|
26
|
26
|
26
|
26
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
26
|
26
|
26
|
26
|
26
|
52
|
1
|
|
|
TBD
|
26
|
26
|
26
|
26
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
26
|
26
|
26
|
52
|
52
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
26
|
26
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
26
|
26
|
52
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
52
|
52
|
1
|
|
|
TBD
|
52
|
26
|
26
|
26
|
26
|
26
|
26
|
26
|
1
|
|
|
TBD
|
52
|
26
|
26
|
26
|
26
|
26
|
52
|
1
|
|
|
TBD
|
52
|
26
|
26
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
52
|
26
|
26
|
26
|
52
|
52
|
1
|
|
|
TBD
|
52
|
52
|
26
|
26
|
26
|
26
|
26
|
1
|
|
|
TBD
|
52
|
52
|
26
|
26
|
26
|
52
|
1
|
|
TBD
|
52
|
52
|
26
|
52
|
26
|
26
|
1
|
|
TBD
|
52
|
52
|
26
|
52
|
52
|
1
|
|
TBD
|
52
|
52
|
-
|
106
|
TBD
|
|
TBD
|
106
|
-
|
52
|
52
|
TBD
|
|
TBD
|
26
|
26
|
26
|
26
|
26
|
106
|
TBD
|
|
TBD
|
26
|
26
|
52
|
26
|
106
|
TBD
|
|
TBD
|
52
|
26
|
26
|
26
|
106
|
TBD
|
|
TBD
|
52
|
52
|
26
|
106
|
TBD
|
|
TBD
|
106
|
26
|
26
|
26
|
26
|
26
|
TBD
|
|
TBD
|
106
|
26
|
26
|
26
|
52
|
TBD
|
|
TBD
|
106
|
26
|
52
|
26
|
26
|
TBD
|
|
TBD
|
106
|
26
|
52
|
52
|
TBD
|
|
TBD
|
106
|
--
|
106
|
TBD
|
|
TBD
|
52
|
52
|
--
|
52
|
52
|
1
|
|
TBD
|
106
|
26
|
106
|
TBD
|
|
TBD
|
242
|
TBD
|
|
TBD
|
484
|
TBD
|
|
TBD
|
996
|
TBD
|
|
TBD
|
2*996
|
TBD
|
|
TBD
|
26
|
26
|
26
|
26
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
26
|
26
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
26
|
26
|
52
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
52
|
52
|
1
|
|
|
TBD
|
52
|
26
|
26
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
52
|
52
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
26
|
26
|
26
|
26
|
26
|
106
|
TBD
|
|
|
TBD
|
26
|
26
|
52
|
26
|
106
|
1
|
|
|
TBD
|
26
|
26
|
52
|
26
|
106
|
TBD
|
|
|
TBD
|
26
|
26
|
52
|
26
|
106
|
TBD
|
|
|
TBD
|
52
|
26
|
26
|
26
|
106
|
TBD
|
|
|
TBD
|
52
|
52
|
26
|
106
|
TBD
|
|
|
TBD
|
106
|
26
|
26
|
26
|
26
|
26
|
TBD
|
|
|
TBD
|
106
|
26
|
26
|
26
|
52
|
TBD
|
|
|
TBD
|
106
|
26
|
52
|
26
|
26
|
TBD
|
|
|
TBD
|
106
|
26
|
52
|
26
|
26
|
1
|
|
|
TBD
|
106
|
26
|
52
|
26
|
26
|
TBD
|
|
|
TBD
|
106
|
26
|
52
|
52
|
TBD
|
|
|
TBD
|
106
|
26
|
106
|
TBD
|
|
|
TBD
|
106
|
26
|
106
|
TBD
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Discussion:
Now there is argument regarding MU-MIMO support for 106-tone RU, number of entries for MU-MIMO support (8 or 16), large
MRU indication method. The entries in the table now try to avoid those controversial parts.
regards
于健 Ross Yu
Huawei Technologies
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