ARQ/HARQ-related procedure for grant-free random access

US11770216B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Zoran UTKOVSKI · Berlin, DE
• Baris GÖKTEPE · Berlin, DE
• Johannes DOMMEL · Berlin, DE
• Thomas FEHRENBACH · Berlin, DE
• Lars THIELE · Berlin, DE
• Cornelius HELLGE · Berlin, DE
• Martin Kasparick · Berlin, DE
• Thomas SCHIERL · Berlin, DE
• Stephan Blankenstein · Berlin, DE
• Thomas WIRTH · Berlin, DE

Key dates

• Filing date: Nov 9, 2020
• Grant date: Sep 26, 2023
• Expiry date: Sep 13, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W74/0833
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A user equipment, UE, for a wireless communication network including one or more base stations, performs a transmission to a base station using a grant-free, GF, transmission scheme. The transmission being performed in accordance with a GF transmission configuration. The UE receives from the base station a certain signaling. The certain signaling indicates that the base station failed to identify the UE from the transmission. Responsive to the certain signaling from the base station, the UE retransmits the transmission in accordance with a GF retransmission configuration. The GF retransmission configuration is different from the GF transmission configuration.