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:
Nov. 04, 2025

Filed:

Jan. 13, 2025
Applicant:

Kddi Corporation, Tokyo, JP;

Inventors:

Hiroki Takeda, Tokyo, JP;

Yanwei Li, Tokyo, JP;

Jungyeon Hong, Fujimino, JP;

Yoshitaka Takaku, Tokyo, JP;

Takeo Ohseki, Fujimino, JP;

Assignee:

KDDI CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 74/0833 (2024.01); H04W 72/23 (2023.01); H04W 76/38 (2018.01);
U.S. Cl.
CPC ...
H04W 74/0833 (2013.01); H04W 72/23 (2023.01); H04W 76/38 (2018.02);
Abstract

A base station apparatus performs, for a currently connected terminal apparatus, setting of a radio resource control (RRC) layer for another base station apparatus that is a destination candidate for a handover by the terminal apparatus from the base station apparatus, instructs the terminal apparatus to transmit a random access preamble to the other base station apparatus via a physical downlink control channel (PDCCH) order without handover to the other base station apparatus being performed, and transmits, to the terminal apparatus, a command instructing for handover to the other base station apparatus in response to the terminal apparatus being in a state for handover to the other base station apparatus.


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