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:
Mar. 29, 2022

Filed:

Mar. 09, 2020
Applicant:

National Chung-shan Institute of Science and Technology, Taoyuan, TW;

Inventors:

Jhih-Lin Li, Taoyuan, TW;

Shao-Yu Lien, Pingtung County, TW;

Chia-Ling Wu, Taoyuan, TW;

Yueh-Jir Wang, Taoyuan, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2018.01); H04L 1/18 (2006.01); H04W 76/14 (2018.01); H04W 72/12 (2009.01); H04L 47/283 (2022.01); H04W 72/04 (2009.01); H04L 5/00 (2006.01);
U.S. Cl.
CPC ...
H04L 1/1887 (2013.01); H04L 5/0055 (2013.01); H04L 47/283 (2013.01); H04W 72/0446 (2013.01); H04W 72/1205 (2013.01); H04W 76/14 (2018.02);
Abstract

A method of sidelink communications by a plurality of user equipment (UE) without the control of a base station in a wireless communication system is disclosed. In one embodiment, the UE being a scheduler end is configured to allocate the resources for initial/repeated transmissions and ACK/NACK messages, and also transmit information regarding the allocated resources to both the UEs being a transmitter end and a receiver end. In one embodiment, retransmission is performed when none of the scheduler and transmitter ends has received the ACK message sent by the receiver end, so as to minimize redundant retransmission in consideration of transmission reliability. In one embodiment, retransmission is performed when at least one of the scheduler and transmitters end has received the NACK message sent by the receiver end before the retransmission timer has reached to zero, so as to minimize transmission latency.


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