Efficient dRU Tone Plan Design for UHR Communications

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The document discusses the signaling techniques for Ultra-High Rate (UHR) communications using dRU (dense RU) for overcoming PSD limitations. It elaborates on the methods to construct a dRU tone plan and indicate dRUs within rRUs. The design involves defining different sizes of dRUs, combining tones, and incorporating a subfield for dRU indication across 20/40/80 MHz channels.

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  1. July 2023 doc.: IEEE 802.11-23/1117r0 dRU Signaling for UHR Date: 2023-07-09 Authors: Name Affiliation Address Phone Email Eunsung Park esung.park@lge.com Dongguk Lim dongguk.lim@lge.com 19, Yangjae-daero 11gil, Seocho-gu, Seoul 137- 130, Korea Jinyoung Chun jiny.chun@lge.com LG Electronics Insun Jang insun.jang@lge.com Jinsoo Choi js.choi@lge.com HanGyu Cho hg.cho@lge.com Submission Slide 1 Eunsung Park, LG Electronics

  2. July 2023 doc.: IEEE 802.11-23/1117r0 Introduction To overcome PSD limitations which are defined per 1 MHz, dRU was introduced in [1] We discussed our view on dRU design ways in [2] In this contribution, we provide detailed methods on how to build dRU tone plan and how to indicate each dRU by using rRU indication Submission Slide 2 Eunsung Park, LG Electronics

  3. July 2023 doc.: IEEE 802.11-23/1117r0 Recap Our view on dRU design ways dRU tone plans are defined in 20 / 40 / 80 MHz channels The existing RU Allocation subfield is reused for dRU allocation dRUs and regular RUs (rRUs) are not used at the same time within 20 MHz For a dRU tone plan, the basic tone size of dRUs and the configuration of dRUs in each channel (i.e., combination of different dRUs in each channel) are defined the same as the conventional rRU tone plan Large size dRUs are built by combining small size dRUs (and null tones depending on the dRU size) An additional subfield for dRU indication (e.g., whether it is dRU or rRU for each 20MHz channel) is defined Submission Slide 3 Eunsung Park, LG Electronics

  4. July 2023 doc.: IEEE 802.11-23/1117r0 How to Build dRU Tone Plan (1/2) We maintain DC, guard and null tones defined in the rRU tone plan We define N*nine 26 dRUs, N*four 52 dRUs and N*two 106 dRUs in N*20 MHz N is equal to 1, 2 and 4 for 20, 40 and 80 MHz, respectively To begin with, 26 dRUs are defined by allocating available tones to each dRU in turn Second, each 52 dRU is defined by combining two 26 dRUs and then each 106 dRU is defined by combining two 52 dRUs and two tones which are null tones in 26 / 52 rRUs but not in 106 rRUs N 26 dRU(s) is(are) not used to build 52 dRUs in N*20 MHz just as the middle 26 rRU in each 20 MHz channel In 40 / 80 MHz, each 242 dRU is defined by combining two 106 dRUs, one 26 dRU which is not used to build 52 dRUs and four tones which are null tones in 106 rRUs but not in 242 rRUs In 80 MHz, each 484 dRU is defined by combining two 242 dRUs Submission Slide 4 Eunsung Park, LG Electronics

  5. July 2023 doc.: IEEE 802.11-23/1117r0 How to Build dRU Tone Plan (2/2) When constructing one large size dRU, we combine two small size dRUs which are located as far away as possible to maximize power gain E.g., 20 MHz dRU tone plan 52 dRU_1 = 26 dRU_1 + 26 dRU_6 52 dRU_2 = 26 dRU_2 + 26 dRU_7 52 dRU_3 = 26 dRU_3 + 26 dRU_8 52 dRU_4 = 26 dRU_4 + 26 dRU_9 106 dRU_1 = 52 dRU_1 + 52 dRU_3 + two null tones 106 dRU_2 = 52 dRU_2 + 52 dRU_4 + two null tones x dRU_y means the yth x-tone dRU in frequency order 26 dRU_5 is not used to build 52 dRUs subcarrier Please see Appendix for 40 / 80 MHz dRU tone plans Submission Slide 5 Eunsung Park, LG Electronics

  6. July 2023 doc.: IEEE 802.11-23/1117r0 How to Indicate Each dRU by rRU Indication (1/4) In order to reuse the existing RU Allocation subfield, we need to determine which rRU indicates each dRU We cannot simply map each dRU to each rRU and need to contemplate the relationship between dRU and rRU combinations when large size dRUs and rRUs are constructed E.g., in 20 MHz First, we simply map 106 dRU_1 and 106 dRU_2 to 106 rRU_1 and 106 rRU_2, respectively, since 106 dRU is the largest dRU in 20 MHz By using following relationship, we can map each 52 dRU to a certain 52 rRU 106 dRU_1 = 52 dRU_1 + 52 dRU_3 + two null tones 106 rRU_1 = 52 rRU_1 + 52 rRU_2 + two null tones 106 dRU_2 = 52 dRU_2 + 52 dRU_4 + two null tones 106 rRU_2 = 52 rRU_3 + 52 rRU_4 + two null tones x rRU_y means the yth x-tone rRU in frequency order Submission Slide 6 Eunsung Park, LG Electronics

  7. July 2023 doc.: IEEE 802.11-23/1117r0 How to Indicate Each dRU by rRU Indication (2/4) E.g., in 20 MHz (cont.) By using following relationship, we can map each 26 dRU to a certain 26 rRU 52 dRU_1 = 26 dRU_1 + 26 dRU_6 52 rRU_1 = 26 rRU_1 + 26 rRU_2 52 dRU_2 = 26 dRU_2 + 26 dRU_7 52 rRU_3 = 26 rRU_6 + 26 rRU_7 52 dRU_3 = 26 dRU_3 + 26 dRU_8 52 rRU_2 = 26 rRU_3 + 26 rRU_4 52 dRU_4 = 26 dRU_4 + 26 dRU_9 52 rRU_4 = 26 rRU_8 + 26 rRU_9 26 dRU_5 can be mapped to 26 rRU_5 In 40 / 80 MHz, we can use a similar approach Please refer to Appendix Submission Slide 7 Eunsung Park, LG Electronics

  8. July 2023 doc.: IEEE 802.11-23/1117r0 How to Indicate Each dRU by rRU Indication (3/4) By using the conventional rRU indication in 20 MHz below, we can indicate each dRU All of the possible configurations in rRU are also possible even in dRU 26 rRU_1 26 dRU_1 26 rRU_3 26 dRU_3 26 rRU_2 26 dRU_6 26 rRU_9 26 dRU_9 26 rRU_4 26 dRU_8 26 rRU_5 26 dRU_5 26 rRU_8 26 dRU_4 26 rRU_6 26 dRU_2 26 rRU_7 26 dRU_7 52 rRU_1 52 dRU_1 52 rRU_3 52 dRU_2 52 rRU_2 52 dRU_3 52 rRU_4 52 dRU_4 106 rRU_1, 106 dRU_1 106 rRU_2, 106 dRU_2 Submission Slide 8 Eunsung Park, LG Electronics

  9. July 2023 doc.: IEEE 802.11-23/1117r0 How to Indicate Each dRU by rRU Indication (4/4) One example for dRU configuration in 20 MHz Assuming the RU Allocation field indicates the RU / MRU configuration in 20 MHz as shown below 26 dRU_4 26 dRU_9 106 dRU_1 26 dRU_5 52 dRU_2 Then, the dRU configuration in 20 MHz is as follows subcarrier Submission Slide 9 Eunsung Park, LG Electronics

  10. July 2023 doc.: IEEE 802.11-23/1117r0 Conclusion We have discussed detailed approaches on how to build dRU tone plan and how to indicate each dRU by using rRU indication With this approach, all of the RU / MRU configurations defined in the 11be spec are also available even in dRU tone plans Submission Slide 10 Eunsung Park, LG Electronics

  11. July 2023 doc.: IEEE 802.11-23/1117r0 References [1] 11-23-0037-00-0uhr-uhr-feature-to-overcome-psd-limitations- distributed-tone-resource-units [2] 11-23-0281-00-0uhr-considerations-on-ru-mru-designs-for-uhr Submission Slide 11 Eunsung Park, LG Electronics

  12. July 2023 doc.: IEEE 802.11-23/1117r0 Appendix Submission Slide 12 Eunsung Park, LG Electronics

  13. July 2023 doc.: IEEE 802.11-23/1117r0 40 MHz dRU Tone Plan 40 MHz tone plan 52 dRU_1 = 26 dRU_1 + 26 dRU_10 52 dRU_2 = 26 dRU_2 + 26 dRU_11 52 dRU_3 = 26 dRU_3 + 26 dRU_12 52 dRU_4 = 26 dRU_4 + 26 dRU_13 52 dRU_5 = 26 dRU_6 + 26 dRU_15 52 dRU_6 = 26 dRU_7 + 26 dRU_16 52 dRU_7 = 26 dRU_8 + 26 dRU_17 52 dRU_8 = 26 dRU_9 + 26 dRU_18 106 dRU_1 = 52 dRU_1 + 52 dRU_5 + two null tones 106 dRU_2 = 52 dRU_2 + 52 dRU_6 + two null tones 106 dRU_3 = 52 dRU_3 + 52 dRU_7 + two null tones 106 dRU_4 = 52 dRU_4 + 52 dRU_8 + two null tones 242 dRU_1 = 106 dRU_1 + 106 dRU_3 + 26 dRU_5 + four null tones 242 dRU_2 = 106 dRU_2 + 106 dRU_4 + 26 dRU_14 + four null tones Slide 13 Submission Eunsung Park, LG Electronics

  14. July 2023 doc.: IEEE 802.11-23/1117r0 40 MHz dRU Mapping (1/4) First, we simply map 242 dRU_1 and 242 dRU_2 to 242 rRU_1 and 242 rRU_2, respectively By using following relationship, we can map each 106 dRU to a certain 106 rRU and 26 dRU_5 and 26 dRU_14 to a certain middle 26 rRU 242 dRU_1 = 106 dRU_1 + 106 dRU_3 + 26 dRU_5 + four null tones 242 rRU_1 = 106 rRU_1 + 106 rRU_2 + 26 rRU_5 + four null tones 242 dRU_2 = 106 dRU_2 + 106 dRU_4 + 26 dRU_14 + four null tones 242 rRU_2 = 106 rRU_3 + 106 rRU_4 + 26 rRU_14 + four null tones Submission Slide 14 Eunsung Park, LG Electronics

  15. July 2023 doc.: IEEE 802.11-23/1117r0 40 MHz dRU Mapping (2/4) By using following relationship, we can map each 52 dRU to a certain 52 rRU 106 dRU_1 = 52 dRU_1 + 52 dRU_5 + two null tones 106 rRU_1 = 52 rRU_1 + 52 rRU_2 + two null tones 106 dRU_2 = 52 dRU_2 + 52 dRU_6 + two null tones 106 rRU_3 = 52 rRU_5 + 52 rRU_6 + two null tones 106 dRU_3 = 52 dRU_3 + 52 dRU_7 + two null tones 106 rRU_2 = 52 rRU_3 + 52 rRU_4 + two null tones 106 dRU_4 = 52 dRU_4 + 52 dRU_8 + two null tones 106 rRU_4 = 52 rRU_7 + 52 rRU_8 + two null tones Submission Slide 15 Eunsung Park, LG Electronics

  16. July 2023 doc.: IEEE 802.11-23/1117r0 40 MHz dRU Mapping (3/4) By using following relationship, we can map each 26 dRU to a certain 26 rRU 52 dRU_1 = 26 dRU_1 + 26 dRU_10 52 rRU_1 = 26 rRU_1 + 26 rRU_2 52 dRU_2 = 26 dRU_2 + 26 dRU_11 52 rRU_5 = 26 rRU_10 + 26 rRU_11 52 dRU_3 = 26 dRU_3 + 26 dRU_12 52 rRU_3 = 26 rRU_6 + 26 rRU_7 52 dRU_4 = 26 dRU_4 + 26 dRU_13 52 rRU_7 = 26 rRU_15 + 26 rRU_16 Submission Slide 16 Eunsung Park, LG Electronics

  17. July 2023 doc.: IEEE 802.11-23/1117r0 40 MHz dRU Mapping (4/4) By using following relationship, we can map each 26 dRU to a certain 26 rRU (cont.) 52 dRU_5 = 26 dRU_6 + 26 dRU_15 52 rRU_2 = 26 rRU_3 + 26 rRU_4 52 dRU_6 = 26 dRU_7 + 26 dRU_16 52 rRU_6 = 26 rRU_12 + 26 rRU_13 52 dRU_7 = 26 dRU_8 + 26 dRU_17 52 rRU_4 = 26 rRU_8 + 26 rRU_9 52 dRU_8 = 26 dRU_9 + 26 dRU_18 52 rRU_8 = 26 rRU_17 + 26 rRU_18 Submission Slide 17 Eunsung Park, LG Electronics

  18. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Tone Plan (1/3) 80 MHz tone plan 52 dRU_1 = 26 dRU_1 + 26 dRU_19 52 dRU_2 = 26 dRU_2 + 26 dRU_20 52 dRU_3 = 26 dRU_3 + 26 dRU_21 52 dRU_4 = 26 dRU_4 + 26 dRU_22 52 dRU_5 = 26 dRU_6 + 26 dRU_24 52 dRU_6 = 26 dRU_7 + 26 dRU_25 52 dRU_7 = 26 dRU_8 + 26 dRU_26 52 dRU_8 = 26 dRU_9 + 26 dRU_27 52 dRU_9 = 26 dRU_10 + 26 dRU_28 52 dRU_10 = 26 dRU_11 + 26 dRU_29 52 dRU_11 = 26 dRU_12 + 26 dRU_30 52 dRU_12 = 26 dRU_13 + 26 dRU_31 Submission Slide 18 Eunsung Park, LG Electronics

  19. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Tone Plan (2/3) 80 MHz tone plan (cont.) 52 dRU_13 = 26 dRU_15 + 26 dRU_33 52 dRU_14 = 26 dRU_16 + 26 dRU_34 52 dRU_15 = 26 dRU_17 + 26 dRU_35 52 dRU_16 = 26 dRU_18 + 26 dRU_36 106 dRU_1 = 52 dRU_1 + 52 dRU_9 + two null tones 106 dRU_2 = 52 dRU_2 + 52 dRU_10 + two null tones 106 dRU_3 = 52 dRU_3 + 52 dRU_11 + two null tones 106 dRU_4 = 52 dRU_4 + 52 dRU_12 + two null tones 106 dRU_5 = 52 dRU_5 + 52 dRU_13 + two null tones 106 dRU_6 = 52 dRU_6 + 52 dRU_14 + two null tones 106 dRU_7 = 52 dRU_7 + 52 dRU_15 + two null tones 106 dRU_8 = 52 dRU_8 + 52 dRU_16 + two null tones Submission Slide 19 Eunsung Park, LG Electronics

  20. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Tone Plan (3/3) 80 MHz tone plan (cont.) 242 dRU_1 = 106 dRU_1 + 106 dRU_5 + 26 dRU_5 + four null tones 242 dRU_2 = 106 dRU_2 + 106 dRU_6 + 26 dRU_14 + four null tones 242 dRU_3 = 106 dRU_3 + 106 dRU_7 + 26 dRU_23 + four null tones 242 dRU_4 = 106 dRU_4 + 106 dRU_8 + 26 dRU_32 + four null tones 484 dRU_1 = 242 dRU_1 + 242 dRU_3 484 dRU_2 = 242 dRU_2 + 242 dRU_4 Submission Slide 20 Eunsung Park, LG Electronics

  21. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Mapping (1/8) First, we simply map 484 dRU_1 and 484 dRU_2 to 484 rRU_1 and 484 rRU_2, respectively By using following relationship, we can map each 242 dRU to a certain 242 rRU 484 dRU_1 = 242 dRU_1 + 242 dRU_3 484 rRU_1 = 242 rRU_1 + 242 rRU_2 484 dRU_2 = 242 dRU_2 + 242 dRU_4 484 rRU_2 = 242 rRU_3 + 242 rRU_4 Submission Slide 21 Eunsung Park, LG Electronics

  22. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Mapping (2/8) By using following relationship, we can map each 106 dRU to a certain 106 rRU and 26 dRU_5, 26 dRU_14, 26 dRU_23 and 26 dRU_32 to a certain middle 26 rRU 242 dRU_1 = 106 dRU_1 + 106 dRU_5 + 26 dRU_5 + four null tones 242 rRU_1 = 106 rRU_1 + 106 rRU_2 + 26 rRU_5 + four null tones 242 dRU_2 = 106 dRU_2 + 106 dRU_6 + 26 dRU_14 + four null tones 242 rRU_3 = 106 rRU_5 + 106 rRU_6 + 26 rRU_23 + four null tones 242 dRU_3 = 106 dRU_3 + 106 dRU_7 + 26 dRU_23 + four null tones 242 rRU_2 = 106 rRU_3 + 106 rRU_4 + 26 rRU_14 + four null tones 242 dRU_4 = 106 dRU_4 + 106 dRU_8 + 26 dRU_32 + four null tones 242 rRU_4 = 106 rRU_7 + 106 rRU_8 + 26 rRU_32 + four null tones Submission Slide 22 Eunsung Park, LG Electronics

  23. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Mapping (3/8) By using following relationship, we can map each 52 dRU to a certain 52 rRU 106 dRU_1 = 52 dRU_1 + 52 dRU_9 + two null tones 106 rRU_1 = 52 rRU_1 + 52 rRU_2 + two null tones 106 dRU_2 = 52 dRU_2 + 52 dRU_10 + two null tones 106 rRU_5 = 52 rRU_9 + 52 rRU_10 + two null tones 106 dRU_3 = 52 dRU_3 + 52 dRU_11 + two null tones 106 rRU_3 = 52 rRU_5 + 52 rRU_6 + two null tones 106 dRU_4 = 52 dRU_4 + 52 dRU_12 + two null tones 106 rRU_7 = 52 rRU_13 + 52 rRU_14 + two null tones Submission Slide 23 Eunsung Park, LG Electronics

  24. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Mapping (4/8) By using following relationship, we can map each 52 dRU to a certain 52 rRU (cont.) 106 dRU_5 = 52 dRU_5 + 52 dRU_13 + two null tones 106 rRU_2 = 52 rRU_3 + 52 rRU_4 + two null tones 106 dRU_6 = 52 dRU_6 + 52 dRU_14 + two null tones 106 rRU_6 = 52 rRU_11 + 52 rRU_12 + two null tones 106 dRU_7 = 52 dRU_7 + 52 dRU_15 + two null tones 106 rRU_4 = 52 rRU_7 + 52 rRU_8 + two null tones 106 dRU_8 = 52 dRU_8 + 52 dRU_16 + two null tones 106 rRU_8 = 52 rRU_15 + 52 rRU_16 + two null tones Submission Slide 24 Eunsung Park, LG Electronics

  25. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Mapping (5/8) By using following relationship, we can map each 26 dRU to a certain 26 rRU 52 dRU_1 = 26 dRU_1 + 26 dRU_19 52 rRU_1 = 26 rRU_1 + 26 rRU_2 52 dRU_2 = 26 dRU_2 + 26 dRU_20 52 rRU_9 = 26 rRU_19 + 26 rRU_20 52 dRU_3 = 26 dRU_3 + 26 dRU_21 52 rRU_5 = 26 rRU_10 + 26 rRU_11 52 dRU_4 = 26 dRU_4 + 26 dRU_22 52 rRU_13 = 26 rRU_28 + 26 rRU_29 Submission Slide 25 Eunsung Park, LG Electronics

  26. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Mapping (6/8) By using following relationship, we can map each 26 dRU to a certain 26 rRU (cont.) 52 dRU_5 = 26 dRU_6 + 26 dRU_24 52 rRU_3 = 26 rRU_6 + 26 rRU_7 52 dRU_6 = 26 dRU_7 + 26 dRU_25 52 rRU_11 = 26 rRU_24 + 26 rRU_25 52 dRU_7 = 26 dRU_8 + 26 dRU_26 52 rRU_7 = 26 rRU_15 + 26 rRU_16 52 dRU_8 = 26 dRU_9 + 26 dRU_27 52 rRU_15 = 26 rRU_33 + 26 rRU_34 Submission Slide 26 Eunsung Park, LG Electronics

  27. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Mapping (7/8) By using following relationship, we can map each 26 dRU to a certain 26 rRU (cont.) 52 dRU_9 = 26 dRU_10 + 26 dRU_28 52 rRU_2 = 26 rRU_3 + 26 rRU_4 52 dRU_10 = 26 dRU_11 + 26 dRU_29 52 rRU_10 = 26 rRU_21 + 26 rRU_22 52 dRU_11 = 26 dRU_12 + 26 dRU_30 52 rRU_6 = 26 rRU_12 + 26 rRU_13 52 dRU_12 = 26 dRU_13 + 26 dRU_31 52 rRU_14 = 26 rRU_30 + 26 rRU_31 Submission Slide 27 Eunsung Park, LG Electronics

  28. July 2023 doc.: IEEE 802.11-23/1117r0 80 MHz dRU Mapping (8/8) By using following relationship, we can map each 26 dRU to a certain 26 rRU (cont.) 52 dRU_13 = 26 dRU_15 + 26 dRU_33 52 rRU_4 = 26 rRU_8 + 26 rRU_9 52 dRU_14 = 26 dRU_16 + 26 dRU_34 52 rRU_12 = 26 rRU_26 + 26 rRU_27 52 dRU_15 = 26 dRU_17 + 26 dRU_35 52 rRU_8 = 26 rRU_17 + 26 rRU_18 52 dRU_16 = 26 dRU_18 + 26 dRU_36 52 rRU_16 = 26 rRU_35 + 26 rRU_36 Submission Slide 28 Eunsung Park, LG Electronics

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