US 12,231,191 B2
Communication device and communication method
Lei Huang, Singapore (SG); Hiroyuki Motozuka, Kanagawa (JP); and Takenori Sakamoto, Kanagawa (JP)
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. 20, 2023, as Appl. No. 18/391,340.
Application 18/391,340 is a continuation of application No. 17/954,211, filed on Sep. 27, 2022, granted, now 11,894,890.
Application 17/954,211 is a continuation of application No. 17/049,231, granted, now 11,489,564, issued on Nov. 1, 2022, previously published as PCT/JP2019/016885, filed on Apr. 19, 2019.
Claims priority of provisional application 62/661,538, filed on Apr. 23, 2018.
Claims priority of application No. 2019-078100 (JP), filed on Apr. 16, 2019.
Prior Publication US 2024/0129002 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/0417 (2017.01); H04B 7/0452 (2017.01); H04B 7/06 (2006.01)
CPC H04B 7/0417 (2013.01) [H04B 7/0452 (2013.01); H04B 7/0621 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An Initiator apparatus comprising:
a transmitter, which, in operation, transmits a feedback request frame to a Responder apparatus after a transmission sector sweep (TXSS), the feedback request frame including a Beamforming (BF) Training Type field in which a value is set, the value being selected from values including a first value indicating Single Input Single Output (SISO) BF training, a second value indicating single user MIMO (SU-MIMO) BF training, and a third value indicating multi user MIMO (MU-MIMO) BF training;
a receiver, which, in operation, receives a feedback frame from the Responder apparatus, the feedback frame including a Sector ID Order subfield and a Signal to Noise Ratio (SNR) subfield, wherein the Sector ID Order subfield indicates a plurality of sector IDs and a plurality of antennas corresponding to at least a portion of sectors used for reception in the TXSS, and wherein the SNR subfield indicates SNRs of the sectors; and
control circuitry, which, in operation, regardless of whether a BF Training type of the TXSS matches a type indicated by the BF Training Type field of the feedback request frame, performs BF training of the type indicated by the BF Training Type field, based on the Sector ID Order subfield and the SNR subfield of the feedback frame.