US 12,119,974 B2 · Techniques for determining phase tracking reference signal density

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling indicating a first set of thresholds corresponding to a first set of reference signal densities and a second set of thresholds corresponding to a second set of reference signal densities. The first set of thresholds may be associated with enabled uplink demodulation reference signal (DMRS) bundling, and the second set of thresholds may be associated with disabled uplink DMRS bundling. The UE may select a reference signal density from the first set or the second set based on a DMRS bundling status and map reference signaling (e.g., a DMRS, a phase tracking reference signal (PTRS), or both) to a set of resources based on the reference signal density. Uplink channel repetitions may occur in disjoint symbols and in such cases, DMRS bundling may be activated when PTRSs between repetitions meet a threshold.

Claims30

Dependent claims

An apparatus for wireless communications at a user equipment (UE), comprising:

at least one processor;
memory coupled with the at least one processor;
and
instructions stored in the memory and executable by the at least one processor to cause the apparatus to:
receive control signaling indicating a first set of thresholds corresponding to a first set of reference signal densities and a second set of thresholds corresponding to a second set of reference signal densities, wherein the first set of thresholds is associated with uplink demodulation reference signal bundling being enabled, and the second set of thresholds is associated with uplink demodulation reference signal bundling being disabled;
select a reference signal density from the first set of reference signal densities or the second set of reference signal densities based at least in part on an uplink demodulation reference signal bundling status;
map reference signaling to a set of resources based at least in part on the reference signal density, the reference signaling comprising a demodulation reference signal, a phase tracking reference signal, or both;
and
transmit an uplink transmission based at least in part on the mapping.

6 more elements

A method for wireless communications at a user equipment (UE), comprising:

receiving control signaling indicating a first set of thresholds corresponding to a first set of reference signal densities and a second set of thresholds corresponding to a second set of reference signal densities, wherein the first set of thresholds is associated with uplink demodulation reference signal bundling being enabled, and the second set of thresholds is associated with uplink demodulation reference signal bundling being disabled;
selecting a reference signal density from the first set of reference signal densities or the second set of reference signal densities based at least in part on an uplink demodulation reference signal bundling status;
mapping reference signaling to a set of resources based at least in part on the reference signal density, the reference signaling comprising a demodulation reference signal, a phase tracking reference signal, or both;
and
transmitting an uplink transmission based at least in part on the mapping.

2 more elements

A non-transitory computer-readable medium storing code for wireless communications at a user equipment (UE), the code comprising instructions executable by one or more processors to:

receive control signaling indicating a first set of thresholds corresponding to a first set of reference signal densities and a second set of thresholds corresponding to a second set of reference signal densities, wherein the first set of thresholds is associated with uplink demodulation reference signal bundling being enabled, and the second set of thresholds is associated with uplink demodulation reference signal bundling being disabled;
select a reference signal density from the first set of reference signal densities or the second set of reference signal densities based at least in part on an uplink demodulation reference signal bundling status;
map reference signaling to a set of resources based at least in part on the reference signal density, the reference signaling comprising a demodulation reference signal, a phase tracking reference signal, or both;
and
transmit an uplink transmission based at least in part on the mapping.

2 more elements

Dependencies are inferred from the claim text.

Techniques for determining phase tracking reference signal density

Life of this patent

Techniques for determining phase tracking reference signal density

Life of this patent

Abstract

Claims30