Hi Kiseon,
RE>>For example, comment #16638 points out that, for a DBE non-AP STA, the draft does not explicitly specify whether enabling DBE mode automatically changes the STA's operating channel width based on the available DBE bandwidth and the STA's signaled maximum operating bandwidth, or whether the operating channel width remains unchanged until a separate update occurs.
---The added text clarifies that STA's maximum operating bandwidth remains the same unless updated by the STA. I think that addresses the comment.
Thanks,
Binita
Thank you for your feedback.
First, in REVmf baseline, it is allowed for a STA to indicate an operating channel width that is greater than the BSS BW of the AP. There is NOTE 6 capturing this in 26.9 Operating mode indication.
E.g. BSS BW can be 40 MHz and operating channel width indicated by the STA is 80 MHz. In this case, the PPDU BW would be limited to 40 MHz but STA's operating channel width is still 80 MHz. This aligns with operating channel width definition in Clause 3.1, since STA is able to receive over 80 MHz but transmissions will be limited to 40 MHz due to BSS BW being 40 MHz.
In baseline we don't have any text which says that operating channel width of a non-AT STA is the smaller of AP's BSS BW and STA's indicated operating channel width. STA's operating channel width is what STA indicates in OMI or OMN.
That needs to be the case when DBE is enabled as well. So, operating channel width of the STA remains the same as what is indicated by the STA in OMI/OMN/AOM, and we have DBE transmission rules defined to restrict the transmission to minimum of the AP’s DBE bandwidth and non-AP STA’s maximum operating bandwidth.
---The added text clarifies that STA's maximum operating bandwidth remains the same unless updated by the STA. I think that addresses the comment.
Binita
On Wed, Oct 28, 2026 at 12:56 AM Kiseon Ryu <kiseon.ryu@xxxxxxxxxxxxxx> wrote:
Hi Binita,
I have some comments on the proposed text changes in 26/1615r10.
The newly added text on page 8 defines the maximum operating bandwidth for DBE based on the most recently transmitted OMN/OMI/AOM signaling. However, it remains unclear what operating channel width a non-AP STA is able to receive on after DBE mode is enabled.
Given that operating channel width is defined in Clause 3.1 as "the channel width in which the STA is currently able to receive", it may be useful to clarify how the operating channel width of a DBE non-AP STA is determined when DBE mode is enabled or disabled.
Would you consider adding text along the following lines?
Upon enablement of DBE mode by a non-AP STA, the operating channel width of the non-AP STA shall be the smaller of:- the latest maximum operating bandwidth signaled by the non-AP STA; and- the DBE bandwidth.
Upon disablement of DBE mode by a non-AP STA, the operating channel width of the non-AP STA shall be the smaller of:- the latest maximum operating bandwidth signaled by the non-AP STA; and- the BSS bandwidth.
Without additional clarification, I do not think the issue raised by the comments is fully addressed.
For example, comment #16638 points out that, for a DBE non-AP STA, the draft does not explicitly specify whether enabling DBE mode automatically changes the STA's operating channel width based on the available DBE bandwidth and the STA's signaled maximum operating bandwidth, or whether the operating channel width remains unchanged until a separate update occurs.
I believe the proposed text above would remove this ambiguity and clearly define the operating channel width behavior during DBE mode transitions.
Thanks,Kiseon