Title:
CONTROL DEVICE, CONTROL METHOD, AND PROGRAM FOR EXECUTING HIGHLY PRECISE CHANNEL ESTIMATION IN WIRELESS COMMUNICATION
Document Type and Number:
WIPO Patent Application WO/2023/157866
Kind Code:
A1
Abstract:
This control device acquires a first series by arranging, in a predetermined order, a plurality of first channel estimation values obtained as a result of signals including a first signal transmitted from a terminal device being received by each of a plurality of antennas, performs a Fourier transform of the first series and thereby converts a first series from a first domain into a second series from a second domain, uses the second series as a basis to specify a range in which the signals transmitted from the terminal device are received in the second domain, extracts a component of the specified range in the second domain from a second channel estimation value obtained as a result of a second signal transmitted from the terminal device being received by each of the plurality of antennas, thereby acquires a third channel estimation value, and performs control so that communication by the terminal device is performed using the third channel estimation value.
Inventors:
OOSAWA NOBORU (JP)
YAMAZAKI KOSUKE (JP)
OHSEKI TAKEO (JP)
GIUSEPPE CAIRE (DE)
FABIAN GOETTESCH (DE)
YAMAZAKI KOSUKE (JP)
OHSEKI TAKEO (JP)
GIUSEPPE CAIRE (DE)
FABIAN GOETTESCH (DE)
Application Number:
PCT/JP2023/005164
Publication Date:
August 24, 2023
Filing Date:
February 15, 2023
Export Citation:
Assignee:
KDDI RES INC (JP)
International Classes:
H04B7/0413; H04L27/26; H04W16/28; H04W28/18
Foreign References:
| US20150256420A1 | 2015-09-10 | |||
| US20130156138A1 | 2013-06-20 |
Other References:
MASAAKI ITO: " Performance evaluation of a scalable self-free large-scale MIMO system using multiple central processing stations considering backhaul transmission capacity constraints", IEICE TECHNICAL REPORT, IEICE, JP, vol. 121, no. 210 (RCS2021-119), 14 October 2021 (2021-10-14), JP, pages 7 - 12, XP009548216
NAOKI AIHARA AKIO IKAMI TAKAHIDE MURAKAMI YU TSUKAMOTO HIROYUKI SHINBO: "Performance Analysis on distributed CPU Cooperation Schemes of CF-mMIMO on User-Centric RAN Towards Beyond 5G", IEICE TECHNICAL RESEARCH REPORT, IEICE, JP, vol. 121, no. 302 (RCS2021-188), 9 December 2021 (2021-12-09), JP, pages 69 - 74, XP009548215
TAKAHIRO MATSUDA AND KENTARO NISHIMORI: "Study on Channel Database for Cell-Free Massive MIMO", IEICE TECHNICAL REPORT, IEICE, JP, vol. 121, no. 357 (CQ2021-77), 20 February 2022 (2022-02-20), JP, pages 7 - 12, XP009548214
KENGO ANDO, HIROKI IIMORI, KOJI ISHIBASHI, AND GIUSEPPE ABREU: "Tensor-aided Beamforming Design for Full Duplex Cell-Free MIMO", IEICE TECHNICAL REPORT, IEICE, JP, vol. 120, no. 404 (RSC2021-72), 24 February 2021 (2021-02-24), JP, pages 249 - 254, XP009548213
NAOKI AIHARA AKIO IKAMI TAKAHIDE MURAKAMI YU TSUKAMOTO HIROYUKI SHINBO: "Performance Analysis on distributed CPU Cooperation Schemes of CF-mMIMO on User-Centric RAN Towards Beyond 5G", IEICE TECHNICAL RESEARCH REPORT, IEICE, JP, vol. 121, no. 302 (RCS2021-188), 9 December 2021 (2021-12-09), JP, pages 69 - 74, XP009548215
TAKAHIRO MATSUDA AND KENTARO NISHIMORI: "Study on Channel Database for Cell-Free Massive MIMO", IEICE TECHNICAL REPORT, IEICE, JP, vol. 121, no. 357 (CQ2021-77), 20 February 2022 (2022-02-20), JP, pages 7 - 12, XP009548214
KENGO ANDO, HIROKI IIMORI, KOJI ISHIBASHI, AND GIUSEPPE ABREU: "Tensor-aided Beamforming Design for Full Duplex Cell-Free MIMO", IEICE TECHNICAL REPORT, IEICE, JP, vol. 120, no. 404 (RSC2021-72), 24 February 2021 (2021-02-24), JP, pages 249 - 254, XP009548213
Attorney, Agent or Firm:
OHTSUKA PATENT OFFICE, P.C. (JP)
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