# US 12,192,969 B2 · Interaction of uplink and downlink positioning reference signals (PRS) with respect to discontinuous reception (DRX)

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- Number: US 12,192,969 B2
- Document ID: US12192969B2
- Status: Granted
- Kind: B2
- Application number: 18/525,611
- Filed: 2023-11-30
- Published: 2024-03-28
- Granted: 2025-01-07
- Earliest claimed: 2020-08-13
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Jingchao Bao; Sony Akkarakaran; Juan Montojo; Tao Luo; Alexandros Manolakos
- Web page: https://patentgrep.com/patent/US12192969B2

## CPC

- H04W 72/02: Selection of wireless resources by user or terminal
- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority}
- H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W 72/56: based on priority criteria
- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) configured to operate in discontinuous reception (DRX) mode receives a configuration of a plurality of first positioning reference signal (PRS) resources, receives a configuration of a plurality of second PRS resources, selects one or more pairs of a first PRS resource of the plurality of first PRS resources and a second PRS resource of the plurality of second PRS resources, each pair of the one or more pairs satisfying one or more DRX pruning rules and one or more bundling conditions, and receives or transmitting the first PRS resource and transmitting or receiving the second PRS resource during one or more DRX cycles of the DRX mode.

## Claims

### Claim 1

A a user equipment (UE) configured to operate in discontinuous reception (DRX) mode, comprising:
one or more memories;
one or more transceivers; and
one or more processors communicatively coupled to the one or more memories and the one or more transceivers, the one or more processors, either alone or in combination, configured to:
receive, via the one or more transceivers, a configuration of a plurality of first positioning reference signal (PRS) resources;
receive, via the one or more transceivers, a configuration of a plurality of second PRS resources;
select one or more pairs of PRS resources based on one or more DRX pruning rules, one or more bundling conditions, or both, wherein each pair of PRS resources comprises a first PRS resource of the plurality of first PRS resources and a second PRS resource of the plurality of second PRS resources; and
receive, via the one or more transceivers, the first PRS resource and transmit, via the one or more transceivers, the second PRS resource of each pair of PRS resources, or transmit, via the one or more transceivers, the first PRS resource and receive, via the one or more transceivers, the second PRS resource of each pair of PRS resources, during one or more DRX cycles of the DRX mode.

### Claim 2 (depends on 1)

The UE of claim 1, wherein the one or more processors configured to select the one or more pairs of PRS resources comprises the one or more processors, either alone or in combination, configured to:
select the first PRS resource of each pair of PRS resources based on the one or more DRX pruning rules and one or more priority rules; and
select the second PRS resource of each pair of PRS resources based on the one or more bundling conditions.

### Claim 3 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being scheduled entirely within DRX ON time and selecting the second PRS resource from the plurality of second PRS resources based on the second PRS resource being scheduled at least partially outside DRX ON time.

### Claim 4 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being scheduled partially within DRX ON time and partially outside of DRX ON time and selecting the second PRS resource from the plurality of second PRS resources based on the second PRS resource being scheduled entirely outside of DRX ON time.

### Claim 5 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being scheduled entirely outside of DRX ON time and selecting the second PRS resource from the plurality of second PRS resources based on the second PRS resource being scheduled at least partially within DRX ON time.

### Claim 6 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being scheduled partially within DRX ON time and partially outside of DRX ON time and selecting the second PRS resource from the plurality of second PRS resources based on the second PRS resource being scheduled entirely within DRX ON time.

### Claim 7 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being scheduled before the second PRS resource.

### Claim 8 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being scheduled after the second PRS resource.

### Claim 9 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being aperiodic and selecting the second PRS resource from the plurality of second PRS resources based on the second PRS resource being semi-persistent or periodic.

### Claim 10 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being semi-persistent and selecting the second PRS resource from the plurality of second PRS resources based on the second PRS resource being periodic.

### Claim 11 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being periodic and selecting the second PRS resource from the plurality of second PRS resources based on the second PRS resource being semi-persistent or aperiodic.

### Claim 12 (depends on 2)

The UE of claim 2, wherein the one or more priority rules comprise:
selecting the first PRS resource from the plurality of first PRS resources based on the first PRS resource being semi-persistent and selecting the second PRS resource from the plurality of second PRS resources based on the second PRS resource being aperiodic.

### Claim 13 (depends on 2)

The UE of claim 2, wherein:
the first PRS resource is part of a PRS occasion, and
the one or more DRX pruning rules comprise:
selecting all PRS resource of the PRS occasion, including the first PRS resource, based on the PRS occasion being entirely within DRX ON time,
selecting all PRS resource of the PRS occasion, including the first PRS resource, based on the PRS occasion being partially within DRX ON time and partially within DRX OFF time,
selecting at least the first PRS resource of the PRS occasion based on the PRS occasion being partially within DRX ON time and partially within DRX OFF time and the first PRS resource being within DRX ON time,
selecting all PRS resource of the PRS occasion, including the first PRS resource, based on the PRS occasion being entirely outside of DRX ON time,
or any combination thereof.

### Claim 14 (depends on 1)

The UE of claim 1, wherein the one or more processors configured to transmit or receiving the second PRS resource of each pair of PRS resources comprises the one or more processors, either alone or in combination, configured to:
transmit or receive, via the one or more transceivers, the second PRS resource regardless of the second PRS resource overlapping a DRX OFF time.

### Claim 15 (depends on 1)

The UE of claim 1, wherein the one or more processors, either alone or in combination, are further configured to:
determine a set of the plurality of first PRS resources satisfying the one or more DRX pruning rules;
determine a set of the plurality of second PRS resources satisfying the one or more DRX pruning rules; and
determine an intersection set or union set of the set of the plurality of first PRS resources and the set of the plurality of second PRS resources,
wherein the one or more pairs of PRS resources are selected from the intersection set or the union set based on the one or more bundling conditions.

### Claim 16 (depends on 1)

The UE of claim 1, wherein the one or more bundling conditions comprise:
the first PRS resource and the second PRS resource of each pair of PRS resources being associated with the same transmission-reception point (TRP),
the first PRS resource and the second PRS resource of each pair of PRS resources being scheduled within a threshold period of time of each other,
a quasi-co-location (QCL) relationship between the first PRS resource and the second PRS resource of each pair of PRS resources,
or any combination thereof.

### Claim 17 (depends on 16)

The UE of claim 16, wherein the second PRS resource is to be transmitted or received only if the first PRS resource is received or transmitted.

### Claim 18 (depends on 16)

The UE of claim 16, wherein:
the first PRS resource comprises a downlink PRS (DL-PRS) resource,
the second PRS resource comprises an uplink PRS (UL-PRS) resource,
the DL-PRS resource is configured to be transmitted as a plurality of repetitions on a plurality of transmit beams, and
an uplink transmit beam on which the UL-PRS resource is transmitted is based on a result of a downlink receive beam sweep of the plurality of repetitions.

### Claim 19 (depends on 16)

The UE of claim 16, wherein:
the first PRS resource comprises an UL-PRS resource,
the second PRS resource comprises a DL-PRS resource,
the UL-PRS resource is configured to be transmitted as a plurality of repetitions on a plurality of transmit beams, and
a downlink transmit beam on which the DL-PRS resource is transmitted is based on a result of an uplink receive beam sweep of the plurality of repetitions.

### Claim 20 (depends on 16)

The UE of claim 16, wherein the one or more processors configured to select the one or more pairs of PRS resources comprises the one or more processors, either alone or in combination, configured to:
select the first PRS resource of each pair of PRS resources based on the one or more DRX pruning rules; and
select the second PRS resource of each pair of PRS resources based on the QCL relationship between the first PRS resource and the second PRS resource.

### Claim 21

A method of wireless communication performed by a user equipment (UE) configured to operate in discontinuous reception (DRX) mode, comprising:
receiving a configuration of a plurality of first positioning reference signal (PRS) resources;
receiving a configuration of a plurality of second PRS resources;
selecting one or more pairs of PRS resources based on one or more DRX pruning rules, one or more bundling conditions, or both, wherein each pair of PRS resources comprises a first PRS resource of the plurality of first PRS resources and a second PRS resource of the plurality of second PRS resources; and
receiving the first PRS resource and transmitting the second PRS resource of each pair of PRS resources, or transmitting the first PRS resource and receiving the second PRS resource of each pair of PRS resources, during one or more DRX cycles of the DRX mode.

### Claim 22 (depends on 21)

The method of claim 21, wherein selecting the one or more pairs of PRS resources comprises:
selecting the first PRS resource of each pair of PRS resources based on the one or more DRX pruning rules and one or more priority rules; and
selecting the second PRS resource of each pair of PRS resources based on the one or more bundling conditions.

### Claim 23 (depends on 22)

The method of claim 22, wherein:
the first PRS resource is part of a PRS occasion, and
the one or more DRX pruning rules comprise:
selecting all PRS resource of the PRS occasion, including the first PRS resource, based on the PRS occasion being entirely within DRX ON time,
selecting all PRS resource of the PRS occasion, including the first PRS resource, based on the PRS occasion being partially within DRX ON time and partially within DRX OFF time,
selecting at least the first PRS resource of the PRS occasion based on the PRS occasion being partially within DRX ON time and partially within DRX OFF time and the first PRS resource being within DRX ON time,
selecting all PRS resource of the PRS occasion, including the first PRS resource, based on the PRS occasion being entirely outside of DRX ON time,
or any combination thereof.

### Claim 24 (depends on 21)

The method of claim 21, wherein transmitting or receiving the second PRS resource of each pair of PRS resources comprises:
transmitting or receiving the second PRS resource regardless of the second PRS resource overlapping a DRX OFF time.

### Claim 25 (depends on 21)

The method of claim 21, further comprising:
determining a set of the plurality of first PRS resources satisfying the one or more DRX pruning rules;
determining a set of the plurality of second PRS resources satisfying the one or more DRX pruning rules; and
determining an intersection set or union set of the set of the plurality of first PRS resources and the set of the plurality of second PRS resources,
wherein the one or more pairs of PRS resources are selected from the intersection set or the union set based on the one or more bundling conditions.

### Claim 26 (depends on 21)

The method of claim 21, wherein the one or more bundling conditions comprise:
the first PRS resource and the second PRS resource of each pair of PRS resources being associated with the same transmission-reception point (TRP),
the first PRS resource and the second PRS resource of each pair of PRS resources being scheduled within a threshold period of time of each other,
a quasi-co-location (QCL) relationship between the first PRS resource and the second PRS resource of each pair of PRS resources,
or any combination thereof.

### Claim 27 (depends on 26)

The method of claim 26, wherein:
the first PRS resource comprises a downlink PRS (DL-PRS) resource,
the second PRS resource comprises an uplink PRS (UL-PRS) resource,
the DL-PRS resource is configured to be transmitted as a plurality of repetitions on a plurality of transmit beams, and
an uplink transmit beam on which the UL-PRS resource is transmitted is based on a result of a downlink receive beam sweep of the plurality of repetitions.

### Claim 28 (depends on 26)

The method of claim 26, wherein:
the first PRS resource comprises an UL-PRS resource,
the second PRS resource comprises a DL-PRS resource,
the UL-PRS resource is configured to be transmitted as a plurality of repetitions on a plurality of transmit beams, and
a downlink transmit beam on which the DL-PRS resource is transmitted is based on a result of an uplink receive beam sweep of the plurality of repetitions.

### Claim 29

A user equipment (UE), comprising:
means for receiving a configuration of a plurality of first positioning reference signal (PRS) resources;
means for receiving a configuration of a plurality of second PRS resources;
means for selecting one or more pairs of PRS resources based on one or more DRX pruning rules, one or more bundling conditions, or both, wherein each pair of PRS resources comprises a first PRS resource of the plurality of first PRS resources and a second PRS resource of the plurality of second PRS resources; and
means for receiving the first PRS resource and transmitting the second PRS resource of each pair of PRS resources, or transmitting the first PRS resource and receiving the second PRS resource of each pair of PRS resources, during one or more DRX cycles of the DRX mode.

### Claim 30

A non-transitory computer-readable medium storing computer-executable instructions that, when executed by a user equipment (UE), cause the UE to:
receive a configuration of a plurality of first positioning reference signal (PRS) resources;
receive a configuration of a plurality of second PRS resources;
select one or more pairs of PRS resources based on one or more DRX pruning rules, one or more bundling conditions, or both, wherein each pair of PRS resources comprises a first PRS resource of the plurality of first PRS resources and a second PRS resource of the plurality of second PRS resources; and
receive the first PRS resource and transmitting the second PRS resource of each pair of PRS resources, or transmitting the first PRS resource and receiving the second PRS resource of each pair of PRS resources, during one or more DRX cycles of the DRX mode.