US 11,671,957 B2
Communication apparatus and communication method
Takeshi Itagaki, Saitama (JP); Tomoya Yamaura, Tokyo (JP); and Yuichi Morioka, Kanagawa (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Filed by SONY GROUP CORPORATION, Tokyo (JP)
Filed on Oct. 25, 2021, as Appl. No. 17/509,508.
Application 17/509,508 is a continuation of application No. 16/843,021, filed on Apr. 8, 2020, granted, now 11,178,674.
Application 16/843,021 is a continuation of application No. 16/245,693, filed on Jan. 11, 2019, granted, now 10,645,712, issued on May 5, 2020.
Application 16/245,693 is a continuation of application No. 15/520,067, granted, now 10,212,718, issued on Feb. 19, 2019, previously published as PCT/JP2015/071919, filed on Aug. 3, 2015.
Claims priority of application No. 2014-219223 (JP), filed on Oct. 28, 2014.
Prior Publication US 2022/0046654 A1, Feb. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/12 (2023.01); H04J 1/00 (2006.01); H04J 13/00 (2011.01); H04W 16/28 (2009.01); H04W 74/08 (2009.01); H04W 84/12 (2009.01); H04W 52/34 (2009.01); H04L 5/00 (2006.01)
CPC H04W 72/12 (2013.01) [H04J 1/00 (2013.01); H04J 13/00 (2013.01); H04L 5/0048 (2013.01); H04W 16/28 (2013.01); H04W 52/346 (2013.01); H04W 74/08 (2013.01); H04W 84/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A first communication apparatus that operates as a non-Access Point (non-AP) station, and wirelessly communicates with an Access Point (AP) communication apparatus based on IEEE802.11 standard, the first communication apparatus comprising:
processing circuitry configured to:
receive a request frame broadcasted by the AP communication apparatus, wherein
the request frame requests the first communication apparatus and a second communication apparatus to transmit a first response frame and a second response frame, respectively, after a short inter-frame space (SIFS) from a reception time of the request frame,
the first response frame includes first feedback information to estimate a first weight of space-division multiplexing for the first communication apparatus, and
the second response frame includes second feedback information to estimate a second weight of space-division multiplexing for the second communication apparatus;
transmit the first response frame to the AP communication apparatus in response to the received request frame;
receive a trigger frame from the AP communication apparatus, wherein
the trigger frame is generated based on the first response frame and the second response frame,
the trigger frame is a trigger for transmission of a first data frame from the first communication apparatus and a second data frame from the second communication apparatus, after the SIFS from a reception time of the trigger frame, and
the trigger frame includes:
identification information that indicates the first communication apparatus and the second communication apparatus which are destinations of the trigger frame,
transmission period information related to a common transmission time period for the first data frame and the second data frame,
subcarrier information related to an allocated subcarrier for each of the first communication apparatus and the second communication apparatus to transmit the first data frame and the second data frame, respectively, and
power information related to a transmission power for each of the first communication apparatus and the second communication apparatus to transmit the first data frame and the second data frame, respectively; and
transmit the first data frame to the AP communication apparatus in response to the received trigger frame, based on the identification information, the transmission period information, the subcarrier information, and the power information, wherein
a length of the first data frame and a length of the second data frame are determined based on the common transmission time period.