US 11,894,890 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 Sep. 27, 2022, as Appl. No. 17/954,211.
Application 17/954,211 is a continuation of application No. 17/049,231, granted, now 11,489,564, 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 2023/0016720 A1, Jan. 19, 2023
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)] 20 Claims
OG exemplary drawing
 
1. A Responder apparatus comprising:
a receiver which, in operation, receives a feedback request frame from an Initiator apparatus after a transmission sector sweep (TXSS) is performed, the feedback request frame including a Beamforming (BF) Training Type field in which a value indicating one of single input single output (SISO) BF training, single user MIMO (SU-MIMO) BF training, multi user MIMO (MU-MIMO) BF training, or a reserved value is set, wherein the receiver is capable of receiving a value indicating the SISO BF training, a value indicating the SU-MIMO BF training, a value indicating the multi user MIMO (MU-MIMO) BF training and a value indicating the reserved value;
measurement circuitry which, in operation, measures Signal to Noise Ratio (SNR) of sectors used for reception in the TXSS;
a transmitter which, in operation, transmits a feedback frame to the Initiator apparatus, the feedback frame including a Sector ID Order subfield and an 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 the sectors used for reception in the TXSS, and wherein the SNR subfield indicates SNRs of the sectors; and
control circuitry which, in operation, performs BF training of a type indicated by the BF Training Type field, based on the Sector ID Order subfield and the SNR subfield.