
Consideration on ELR Operation for IEEE 802.11
"This document discusses the extension of ELR operation for IEEE 802.11, focusing on bandwidth considerations, transmission methods, and interference mitigation strategies, providing a detailed insight into supporting ELR features with varying bandwidths. Key points include the use of MRU with repeat transmission and flexible configuration of RU start locations."
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MAR 2025 Doc.: IEEE 802.11-25/0333 Consideration on ELR for 11bn Date: 2025-03-08 Authors: Name Affiliation Address Phone Email Lei Zhou New H3C New H3C Zhou.leih@h3c.com Lei Kong Renmu Luo New H3C Xiangxin Gu Spreadtrum Spreadtrum Yingqiao Quan Submission Slide 1 Lei Zhou (New H3C)
MAR 2025 Doc.: IEEE 802.11-25/0333 Recap Motion has passed to support ELR extension as follows[1]: The BW of ELR PPDU is 20MHz and one Spatial stream is used for ELR transmission. [Motion #92, [1] and [175]] In the ELR transmission, a repeating of 52-tone RRU is used in 20MHz. The same data is repeated in four 52-tone RRUs in 20 MHz. The subcarrier allocation of 52-tone RRU equals the 52-tone RU defined in 11be. [Motion #93, [1] and [175]] Submission Slide 2 Lei Zhou (New H3C)
MAR 2025 Doc.: IEEE 802.11-25/0333 Consideration on ELR operation for BW >20MHz(1/3) Although BW of one ELR PPDU is limited to 20MHz, we still need consider BW> 20MHz case to support ELR feature with the following purpose. Obtain good throughput performance Mitigate frequency-selective interference Submission Slide 3 Lei Zhou (New H3C)
MAR 2025 Doc.: IEEE 802.11-25/0333 Consideration on ELR operation for BW >20MHz(2/3) Using 40 MHz bandwidth as an example MRU with repeat transmission should be supported for Obtaining good throughput performance in ELR case Submission Slide 4 Lei Zhou (New H3C)
MAR 2025 Doc.: IEEE 802.11-25/0333 Consideration on ELR operation for BW >20MHz(3/3) Using 40 MHz bandwidth as an example variable RU start location for repeat transmission should be supported for Mitigate frequency-selective interference in ELR case Submission Slide 5 Lei Zhou (New H3C)
MAR 2025 Doc.: IEEE 802.11-25/0333 Summary ELR operation for BW >20MHz is proposed. MRU with repeat transmission should be supported RU start location for repeat transmission should be flexibly configured. Submission Slide 6 Lei Zhou (New H3C)
MAR 2025 Doc.: IEEE 802.11-25/0333 Reference [1]. 11-24-0209-09-00bn-specification-framework-for-tgbn Submission Slide 7 Lei Zhou (New H3C)
MAR 2025 Doc.: IEEE 802.11-25/0333 SP1 Do you agree to include the following into the 11bn SFD? ELR operation for BW >20MHz should be supported At least 40MHz and 80MHz BW Y N A Submission Slide 8 Lei Zhou (New H3C)
MAR 2025 Doc.: IEEE 802.11-25/0333 SP2 Do you agree to support MRU with repeat transmission should be enabled if ELR operation for BW >20MHz is supported? Y N A Submission Slide 9 Lei Zhou (New H3C)
MAR 2025 Doc.: IEEE 802.11-25/0333 SP3 Do you agree to support RU start location for repeat transmission should be configured if ELR operation for BW >20MHz is supported? Y N A Submission Slide 10 Lei Zhou (New H3C)