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:
Jan. 17, 2023

Filed:

Jul. 21, 2020
Applicant:

Industrial Technology Research Institute, Zhudong Township, Hsinchu County, TW;

Inventors:

Nai-Lun Huang, Zhubei, TW;

Jung-Mao Lin, Zhubei, TW;

Wan-Jung Tsai, Taoyuan, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 74/08 (2009.01); H04B 17/318 (2015.01); H04W 76/18 (2018.01);
U.S. Cl.
CPC ...
H04W 74/0808 (2013.01); H04B 17/318 (2015.01); H04W 74/0833 (2013.01); H04W 76/18 (2018.02);
Abstract

A method and a user equipment of performing resource switching in an unlicensed spectrum are provided. A current set of resources in the unlicensed spectrum is utilized by a UE for performing LBT attempts for transmission of an RACH message to a base station. One or more LBT attempts for transmissions from the UE to the base station are performed over the current set of resources during a current RACH procedure. The current set of resources is switched to a new set of resources in the unlicensed spectrum to be utilized by the UE in a new RACH procedure after a failure count reaches a pre-configured threshold during the current RACH procedure. The failure count is calculated at least based on a count of LBT failure over the current set of resources during the current RACH procedure.


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