Back to results
US 10,873,389 B2Granted
Phase tracking reference signal symbol mapping
AssigneeQUALCOMM Incorporated
InventorsTianyang Bai, Juergen Cezanne, Alexandros Manolakos, Sony Akkarakaran, Tao Luo, Junyi Li
Life of this patent
Estimating the term…
Abstract
The present disclosure provides techniques that may be applied, for example, for determining phase tracking reference signal (PT-RS) patterns/configurations. As described herein, PT-RS may be mapped to a symbol based, at least in part, on one or more symbols in which a PT-RS is expected to be punctured due to a collision with at least one of time or frequency resources allocated to another signal or to another wireless device, a MCS, and/or an expected PT-RS density.
Claims18
A method for wireless communications, comprising:
- determining a slot configuration for a wireless device to use for communication, wherein the slot configuration comprises at least one of a channel assignment for one or more slots, a reference signal configuration, or a phase tracking reference signal (PT-RS) density within a set of time-frequency resources;
- determining, based on the slot configuration, a PT-RS puncturing configuration associated with the wireless device;
- and
- selecting a PT-RS configuration for the wireless device based, at least in part, on the slot configuration and the PT-RS puncturing configuration, wherein:
- selecting the PT-RS configuration comprises allocating a first symbol with at least one PT-RS if the wireless device was unable to obtain a phase tracking reference in one or more second symbols prior to the first symbol;
- and
- a number of the second symbols is based on the PT-RS density.
4 more elements
A method for wireless communications, comprising:
- determining a slot configuration for a wireless device to use for communication, wherein the slot configuration comprises at least one of a channel assignment for one or more slots, a reference signal configuration, or a phase tracking reference signal (PT-RS) density within a set of time-frequency resources;
- determining, based on the slot configuration, a PT-RS puncturing configuration associated with the wireless device;
- and
- selecting a PT-RS configuration for the wireless device based, at least in part, on the slot configuration and the PT-RS puncturing configuration, wherein:
- selecting the PT-RS configuration comprises allocating a first symbol with at least one PT-RS if the wireless device was unable to obtain a phase tracking reference in one or more second symbols prior to the first symbol and the wireless device determines that it will be unable to obtain the phase tracking reference in one or more third symbols subsequent to the first symbol;
- and
- a number of the second symbols and a number of the third symbols is based on the PT-RS density.
4 more elements
A method for wireless communications, comprising:
- determining a slot configuration for a wireless device to use for communication;
- determining, based on the slot configuration, a phase tracking reference signal (PT-RS) puncturing configuration associated with the wireless device, wherein determining the PT-RS puncturing configuration comprises:
- determining, from the slot configuration, that the wireless device is assigned non-contiguous symbols in a slot;
- and
- determining that one or more PT-RSs are expected to be punctured or not present in one or more unassigned symbols in the slot;
- and
- selecting a PT-RS configuration for the wireless device based, at least in part, on the slot configuration and the PT-RS puncturing configuration.
4 more elements
A method for wireless communications, comprising:
- determining a slot configuration for a wireless device to use for communication;
- determining, based on the slot configuration, a phase tracking reference signal (PT-RS) puncturing configuration associated with the wireless device, wherein determining the PT-RS puncturing configuration comprises determining, from the slot configuration, one or more symbols in which a PT-RS is expected to be punctured due to a collision with at least one of time or frequency resources allocated to another signal or to another wireless device;
- and
- selecting a PT-RS configuration for the wireless device based, at least in part, on the slot configuration and the PT-RS puncturing configuration, wherein selecting the PT-RS configuration comprises:
- refraining from allocating the PT-RS to at least a first symbol of the one or more symbols if at least one of:
- an amount of frequency resources in the first symbol that collide with the one of time or frequency resources allocated to the other signal or the other wireless device is above a first threshold;
- or
- a number of frequency resources in the first symbol available for allocating the PT-RS after puncturing is below a second threshold;
- and
- allocating the PT-RS to at least a second symbol, wherein at least one of:
- an amount of frequency resources in the second symbol that collide with the one of time or frequency resources allocated to the other signal or the other wireless device is below the first threshold;
- or
- a number of frequency resources in the second symbol available for allocating the PT-RS after puncturing that is above the second threshold.
10 more elements
Dependencies are inferred from the claim text.