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1. (WO2017167198) HARQ SYSTEMS AND METHODS FOR GRANT-FREE UPLINK TRANSMISSIONS

Pub. No.:    WO/2017/167198    International Application No.:    PCT/CN2017/078587
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Thu Mar 30 01:59:59 CEST 2017
IPC: H04W 48/08
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
Inventors: CAO, Yu
ZHANG, Liqing
Title: HARQ SYSTEMS AND METHODS FOR GRANT-FREE UPLINK TRANSMISSIONS
Abstract:
Systems and methods are disclosed for performing hybrid automatic repeat request (HARQ) for grant-free uplink transmissions. Some of the systems and methods disclosed herein may address problems such as how to perform acknowledgement (ACK) and/or negative acknowledgement (NACK), how to determine and signal retransmission timing, how to determine the transmission/retransmission attempt and the redundancy version (RV), and/or how to perform the HARQ combining.