The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 06, 2025

Filed:

May. 05, 2022
Applicant:

Kddi Corporation, Tokyo, JP;

Inventors:

Takeo Ohseki, Fujimino, JP;

Masaaki Ito, Fujimino, JP;

Issei Kanno, Fujimino, JP;

Kosuke Yamazaki, Fujimino, JP;

Assignee:

KDDI CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 74/0833 (2023.12); H04B 7/06 (2005.12); H04B 7/08 (2005.12); H04L 5/00 (2005.12);
U.S. Cl.
CPC ...
H04W 74/0833 (2012.12); H04B 7/0608 (2012.12); H04B 7/0802 (2012.12); H04L 5/0048 (2012.12);
Abstract

A control apparatus that is connected to a plurality of antennas and performs communication of user data with a terminal apparatus using at least one of the plurality of antennas, specifies a reception state of a random access preamble transmitted from the terminal apparatus for establishing connection with the control apparatus, at each of the plurality of antennas, selects an antenna to be used when performing communication of user data with the terminal apparatus, from the plurality of antennas based on the respective reception states at the plurality of antennas, and performs control such that communication of user data is performed with the terminal apparatus using the selected antenna.


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