IEEE 802.11-20/0791r4 Proposal for M-RU Support in 11be
Explore the proposal to make M-RU a distinguishing feature of IEEE 802.11be relative to 11ax, enhancing scheduling efficiency in OFDMA transmissions while providing flexibility for AP control. Delve into the mandatory RU combinations for non-OFDMA and OFDMA transmissions, emphasizing support for different bandwidths. Consider straw poll feedback on mandatory RU combinations for non-AP STAs and the importance of device support for various MHz transmissions.
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June 2020 doc.: IEEE 802.11-20/0791r4 Mandatory M-RU Support Date: 2020-06-04 Authors: Name Affiliations Address Phone email Ron Porat Broadcom ron.porat@broadcom.com Submission Slide 1 Ron Porat (Broadcom)
June 2020 doc.: IEEE 802.11-20/0791r4 Abstract Previously, each major amendment had a PHY feature clearly differentiating that amendment from the previous one e.g. 80MHz in 11ac and OFDMA in 11ax Propose to make M-RU a PHY differentiating feature of 11be relative to 11ax Submission Slide 2 Ron Porat (Broadcom)
June 2020 doc.: IEEE 802.11-20/0791r4 Discussion The current SFD defines large M-RU and small M-RU that provide better scheduling efficiency in OFDMA (e.g. small M-RU) and support single user transmissions around spectrum holes in 5GHz (for Radar) and 6GHz (under AFC rules). The proposals in the SFD provide good balance of implementation complexity and utility (limit to only the most useful cases) It makes sense that 11be STA and AP devices support those cases to build an ecosystem around them. However when it comes to OFDMA (DL and UL) we can allow the AP the freedom to choose its preferred RU since this feature is totally under the control of the AP. Hence the proposal differentiates between non-OFDMA and OFDMA transmissions Submission Slide 3 Ron Porat (Broadcom)
June 2020 doc.: IEEE 802.11-20/0791r4 Proposal Propose to make the following RU combinations mandatory in: Non-OFDMA transmissions: for AP and non-AP STA OFDMA transmissions: for non-AP STA Mandatory RU combinations: Small: {26+52, 106+26} for non-AP STA only Large: as shown in the table Conditioned on device supporting 80, 160, 240 and 320MHz transmissions. Mandatory in Non-OFDMA for: AP , STA AP , STA AP , STA Mandatory in OFDMA for: Non-AP STA only Non-AP STA only Not supported BW RU 80MHz 484+242 996+484 996+(484+242) 3x996, 2x996+484, 2x996 (any 2) 4x996, 3x996+484, 3x996 (any 3) 160MHz 240MHz AP , STA Non-AP STA only 320MHz AP , STA Non-AP STA only Submission Slide 4 Ron Porat (Broadcom)
June 2020 doc.: IEEE 802.11-20/0791r4 Straw Poll 1 Do you support the following mandatory RU combinations? Small: {26+52, 106+26} for non-AP STA only and in OFDMA only Large: as in the table below Conditioned on device supporting 80, 160, 240 and 320MHz transmissions BW support for 11be AP and non-AP STA is TBD Mandatory in Non- OFDMA for: AP , STA AP , STA AP , STA BW RU 80MHz 484+242 996+484 996+(484+242) 3x996, 2x996+484, 2x996 (any 2) 4x996, 3x996+484, 3x996 (any 3) 160MHz 240MHz AP , STA 320MHz AP , STA Submission Slide 5 Ron Porat (Broadcom)
June 2020 doc.: IEEE 802.11-20/0791r4 Straw Poll 2 Do you support the following mandatory RU combinations? Small: {26+52, 106+26} for non-AP STA only Large: as in the table below Conditioned on device supporting 80, 160, 240 and 320MHz transmissions BW support for 11be AP and non-AP STA is TBD Note: currently in the SFD under OFDMA 2x996+484 and 3x996+484 are TBD In OFDMA BW=320 996+484 can be scheduled in P160 or S160 Mandatory in Non- OFDMA for: AP , STA AP , STA AP , STA BW RU Mandatory in OFDMA for: 80MHz 484+242 996+484 996+(484+242) 3x996, 2x996+484, 2x996 (any 2) 4x996, 3x996+484, 3x996 (any 3) Non-AP STA only Non-AP STA only Not supported Non-AP STA only Note: 3x996 not applicable Non-AP STA only Note: 4x996 not applicable 160MHz 240MHz AP , STA 320MHz AP , STA Submission Slide 6 Ron Porat (Broadcom)
