US 12,192,153 B2
Subcarrier indices for distributed-tone resource units in 6GHz low-power indoor systems
Shengquan Hu, San Jose, CA (US); Jianhan Liu, San Jose, CA (US); and Thomas Edward Pare, Jr., San Jose, CA (US)
Assigned to MediaTek Singapore Pte. Ltd., (SG)
Filed by MediaTek Singapore Pte. Ltd., Singapore (SG)
Filed on Oct. 27, 2021, as Appl. No. 17/511,801.
Claims priority of provisional application 63/150,154, filed on Feb. 17, 2021.
Claims priority of provisional application 63/107,551, filed on Oct. 30, 2020.
Prior Publication US 2022/0140988 A1, May 5, 2022
Int. Cl. H04L 5/00 (2006.01); H04W 72/0453 (2023.01)
CPC H04L 5/0098 (2013.01) [H04L 5/0046 (2013.01); H04L 5/0048 (2013.01); H04W 72/0453 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
distributing frequency tones of a resource unit (RU) over a distribution bandwidth as a distributed-tone RU (DRU);
generating a plurality of subcarrier indices for the distributed-tone RU such that a distribution of the distributed-tone RU is symmetric to a direct-current (DC) tone along an axis of subcarrier indices; and
communicating wirelessly using the distributed-tone RU in a 6 GHz low-power indoor (LPI) system,
wherein the distributed-tone RU comprises a left-side portion and a right-side portion with respect to the DC tone, which is a center DC tone of a plurality of DC tones, and
wherein the distributed-tone RU is symmetric to the center DC tone in which:
the center DC tone is located symmetrically between the left-side portion and the right-side portion,
a first pattern of tone distribution in the left-side portion and a second pattern of tone distribution in the right-side portion are symmetric with respect to the center DC tone, and
the first pattern and the second pattern are opposite of each other in a two-dimensional (2D) space with one axis of DRU index in permutation order and another axis of subcarrier indices.