Advanced Interference Mitigation Solutions
Explore the suggested definitions and constraints for Interference Mitigation (IM) pilots to enhance the reliability of technical contributions and simplify design processes. The document presents key points such as limitations, fixed pilot quantities, subcarrier positions, and applicability scenarios, providing a comprehensive overview for further discussion and implementation.
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Presentation Transcript
November 2024 doc.: IEEE 802.11-24/1785r2 Interference Mitigation Pilots - Definitions Date: November 9, 2024 Authors: Name Shimi Shilo Affiliations email shimi.shilo@huawei.com Rani Keren Oded Redlich Huawei Doron Ezri Ezer Melzer Nadav Basson Slide 1 Shimi Shilo et al., Huawei
November 2024 doc.: IEEE 802.11-24/1785r2 Introduction Interference Mitigation as a means to significantly improve the reliability has been presented in multiple technical contributions, e.g. [1] A motion to incorporate additional IM pilots (used for interference estimation and mitigation) passed in the September meeting [2]: In this contribution we suggest some definitions/constraints w.r.t. IM Slide 2 Shimi Shilo et al., Huawei
November 2024 doc.: IEEE 802.11-24/1785r2 Suggested IM Pilot Definitions In order to simplify the use and definition of IM Pilots, we suggest to limit the operation of Interference Mitigation to the following cases: Works only with LDPC Works only with regular RUs (not applicable to dRUs) Number of IM Pilots is fixed per BW size (values TBD) simplifies design/signaling IM Pilots are used in every OFDM symbol of the data field and are located in fixed subcarrier positions (enables regularized hardware + supports immediate identification of interference that begins anywhere within the data portion) Also worth noting: IM is less applicable for DL MU-MIMO (i.e., in this operation mode it is only applicable in relatively marginal cases where STAs have more Rx Degrees of Freedom than the number of MU-Interference streams) Slide 3 Shimi Shilo et al., Huawei
November 2024 doc.: IEEE 802.11-24/1785r2 Summary We suggested some constraints and design properties of IM pilots which will simplify their design both in the spec and in products Slide 4 Shimi Shilo et al., Huawei
November 2024 doc.: IEEE 802.11-24/1785r2 Straw Poll #1 Do you support to include the following in the 11bn SFD: The Interference Mitigation feature is only defined with LDPC? Slide 5 Shimi Shilo et al., Huawei
November 2024 doc.: IEEE 802.11-24/1785r2 Straw Poll #2 Do you support to include the following in the 11bn SFD: The Interference Mitigation feature is not defined for dRUs? Slide 6 Shimi Shilo et al., Huawei
November 2024 doc.: IEEE 802.11-24/1785r2 Straw Poll #3 Do you support to include the following in the 11bn SFD: For each bandwidth, there is a fixed number of IM pilots (value TBD)? Slide 7 Shimi Shilo et al., Huawei
November 2024 doc.: IEEE 802.11-24/1785r2 Straw Poll #4 Do you support to include the following in the 11bn SFD: Within any transmission that uses IM pilots, they are used in every data OFDM symbol and in the same corresponding subcarriers positions, for a given BW? Slide 8 Shimi Shilo et al., Huawei
November 2024 doc.: IEEE 802.11-24/1785r2 References [1] 11-24-1264r0: Supporting Rx Interference Mitigation in TGbn (Shimi Shilo et al) [2] 11-24-171r15: TGbn Motions List Part 1 (Alfred Asterjadhi) Slide 9 Shimi Shilo et al., Huawei
