Sidelink feedback

US11770208B2 · kind B2 · utility

Assignee

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

Inventors

• Thomas FEHRENBACH · Berlin, DE
• Baris GOEKTEPE · Berlin, DE
• Thomas WIRTH · Berlin, DE
• Cornelius HELLGE · Berlin, DE
• Sarun SELVANESAN · Berlin, DE
• Robin Thomas · Berlin, DE
• Thomas SCHIERL · Berlin, DE

Key dates

• Filing date: Mar 23, 2021
• Grant date: Sep 26, 2023
• Expiry date: Jun 13, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L5/0055
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

An apparatus for a wireless communication system is configured to be connected to at least one user device, UE, of the wireless communication system via a sidelink for a sidelink communication with the at least one UE. For a unicast transmission to the UE, the apparatus is configured to transmit a sidelink frame having a certain frame duration, a first part of the sidelink frame including a control signaling, the control signaling indicating to the UE whether a feedback is to be returned to the apparatus, the feedback indicating a successful reception of data at the UE and/or a sidelink channel condition. In case the feedback from the UE is desired, the apparatus is configured to transmit in the first part of the frame, using the control signaling, the indication that the feedback is to be provided by the UE such that a duration of the control signaling is shorter, by a remaining duration, than the frame duration, and receive from the UE, during the remaining duration, the feedback.