US 12,237,887 B2
Communication apparatus and communication method for channel estimation
Lei Huang, Singapore (SG); Yoshio Urabe, Nara (JP); and Rojan Chitrakar, Singapore (SG)
Assigned to Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Dec. 19, 2023, as Appl. No. 18/545,742.
Application 18/545,742 is a continuation of application No. 18/068,390, filed on Dec. 19, 2022, granted, now 11,894,893.
Application 18/068,390 is a continuation of application No. 17/277,682, granted, now 11,588,521, issued on Feb. 21, 2023, previously published as PCT/SG2019/050394, filed on Aug. 8, 2019.
Claims priority of application No. 10201808652U (SG), filed on Oct. 1, 2018.
Prior Publication US 2024/0162945 A1, May 16, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 1/02 (2006.01); H04B 7/0417 (2017.01); H04B 7/0452 (2017.01)
CPC H04B 7/0452 (2013.01) [H04B 7/0417 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A communication apparatus comprising:
circuitry, which, in operation, sets a number of Extremely High Throughput Long training field (EHT-LTF) symbols in a physical layer protocol data unit (PPDU) for multi user transmission based on a tentative number of EHT-LTF symbols that is common for resource units (RUs) in the PPDU and determined according to a number of spatial streams (Nss) specified for each of the RUs, wherein the number of EHT-LTF symbols is set to be equal to or larger than the tentative number of EHT-LTF symbols; and
a transmitter, which, in operation, transmits the PPDU.