Invention Grant
- Patent Title: Methods and apparatuses for latency reduction for URLLC
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Application No.: US16746415Application Date: 2020-01-17
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Publication No.: US11722254B2Publication Date: 2023-08-08
- Inventor: Seyed Ali Akbar Fakoorian , Jing Sun , Xiaoxia Zhang , Chih-Hao Liu , Srinivas Yerramalli
- Applicant: QUALCOMM incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Holland & Hart LLP/Qualcomm Incorporated
- Main IPC: H04L1/18
- IPC: H04L1/18 ; H04L1/1812 ; H04W72/21 ; H04W72/23

Abstract:
A method, an apparatus, a base station, and a user equipment (UE) for wireless communication are provided to reduce the retransmission latency for URLLC communications. Upon receiving a downlink data transmission, a UE waits until it completes decoding of the received downlink data transmission before it can send an ACK/NAK report on the decoded downlink data transmission. In case of a decoding failure, the base station cannot start retransmission until the UE finishes the decoding of the downlink data transmission and sends the ACK/NAK report and until the base station finishes decoding of an NAK in the ACK/NAK report. This considerable retransmission latency may not meet stringent latency requirements of some URLLC applications. A two-stage ACK/NAK reporting is disclosed to reduce the retransmission latency where the UE sends an early ACK/NAK report upon partially completing the decoding of the downlink data transmission.
Public/Granted literature
- US20210226734A1 METHODS AND APPARATUSES FOR LATENCY REDUCTION FOR URLLC Public/Granted day:2021-07-22
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