US 12,224,884 B2 · DMRS-free operation of new radio (NR) shared channels

Abstract

One or more shared data channels, e.g., PDSCH, PUSCH, PSSCH, are configured to be DMRS-free, thus allowing the resources which would be used for DMRS to be used to convey additional traffic data signals. Channel estimation based on control channel DMRS, e.g., PDCCH DMRS, PUCCH DMRS, or PSSCH/PSCCH DMRS, is used to demodulate and/or decode the traffic channel signals communicated on the DMRS-free shared traffic channel resources. Antenna port hopping is implemented as part of the PDCCH configuration to support a DMRS-free PDSCH. The antenna port hopping of the PDCCH is used to obtain a set of channel estimates based on PDDCH DMRS corresponding to different antenna ports which will match the antenna ports used for the PDSCH.

Claims30

Dependent claims

A method of operating a base station, the method comprising:

transmitting to a first user equipment (UE) information indicating a physical downlink control channel (PDCCH) configuration to be used as part of a demodulation reference signal (DMRS) free physical downlink shared channel (PDSCH) reception mode of operation to be implemented by the first user equipment (UE);
and
transmitting to the first UE, on PDCCH resources, i) PDCCH control information and ii) DMRS signals.

Dependencies are inferred from the claim text.

Facts

Application

17/712,934Filed 4 Apr 2022

Published

US 2023/0318879 A15 Oct 2023

Granted

11 Feb 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04L 25/0204
Channel estimation: of multiple channels
H04L 5/0044
Arrangements for allocating sub-channels of the transmission path: allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
H04L 5/0051
Allocation of pilot signals, i.e. of signals known to the receiver: of dedicated pilots, i.e. pilots destined for a single user or terminal
H04L 5/0094
Signalling for the administration of the divided path, e.g. signalling of configuration information: indication of how sub-channels of the path…

DMRS-free operation of new radio (NR) shared channels

Life of this patent

DMRS-free operation of new radio (NR) shared channels

Life of this patent

Abstract

Claims30