EP-4740570-A1 - PERFORMANCE MONITORING ASSOCIATED WITH LOW-DENSITY REFERENCE SIGNAL PATTERNS

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain channel measurements associated with one or more measurement resources, wherein the one or more measurement resources are associated with a low-density reference signal pattern, and the one or more measurement resources are associated with one or more of an inference-based channel estimation or a performance monitoring. The UE may determine a key performance indicator (KPI) based at least in part on the channel measurements. The UE may transmit a report that indicates one or more of the KPI or the channel measurements. Numerous other aspects are described.

Inventors

• HU, RUI
• HAO, Chenxi
• YOO, TAESANG
• XU, HAO

Assignees

• QUALCOMM Incorporated

Dates

Publication Date

20260513

Application Date

20230707

Claims (20)

1. An apparatus for wireless communication at a user equipment (UE) , comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors individually or collectively configured to: obtain channel measurements associated with one or more measurement resources, wherein the one or more measurement resources are associated with a low-density reference signal pattern, and the one or more measurement resources are associated with one or more of an inference-based channel estimation or a performance monitoring; determine a key performance indicator (KPI) based at least in part on the channel measurements; and transmit a report that indicates one or more of the KPI or the channel measurements.
2. The apparatus of claim 1, wherein the one or more measurement resources are channel state information reference signal (CSI-RS) resources, and the low-density reference signal pattern is a low-density CSI-RS pattern.
3. The apparatus of claim 1, wherein the one or more measurement resources include a single resource associated with the inference-based channel estimation and the performance monitoring, wherein a first portion of the single resource is associated with the inference-based channel estimation and a remaining portion of the single resource is associated with the performance monitoring.
4. The apparatus of claim 3, wherein the one or more processors are individually or collectively configured to determine the KPI based at least in part on channel measurements associated with the first portion of the single resource and channel measurements associated with the remaining portion of the single resource.
5. The apparatus of claim 1, wherein the one or more measurement resources include a first resource associated with the inference-based channel estimation and a second resource associated with the performance monitoring.
6. The apparatus of claim 5, wherein the one or more processors are individually or collectively configured to determine the KPI based at least in part on channel measurements associated with the first resource and channel measurements associated with the second resource.
7. The apparatus of claim 5, wherein the second resource includes physical resources that are not included in the first resource.
8. The apparatus of claim 5, wherein the first resource is independent from the second resource.
9. The apparatus of claim 5, wherein the first resource is paired with the second resource.
10. The apparatus of claim 1, wherein the KPI is based at least in part on a normalized mean square error (NMSE) associated with the channel measurements.
11. The apparatus of claim 1, wherein the one or more measurement resources include a single resource associated with only the inference-based channel estimation.
12. The apparatus of claim 11, wherein the one or more processors are individually or collectively configured to determine the KPI based at least in part on channel measurements associated with the single resource and a proxy model.
13. The apparatus of claim 1, wherein the report includes one or more of: the KPI, the channel measurements, channel state information (CSI) derived from the channel measurements, or a one-bit indication that indicates whether a density of the low-density reference signal pattern satisfies a threshold.
14. The apparatus of claim 1, wherein the low-density reference signal pattern is one of: a non-uniform and resource block (RB) -common pattern, a non-uniform and RB-specific pattern, a uniform and RB-common pattern, or a uniform and RB-specific pattern, and the low-density reference signal pattern includes RBs associated with reference signal observations and RBs that are not associated with reference signal observations.
15. The apparatus of claim 1, wherein the report is a network-node-controlled report, and the report is one of: a periodic report, a semi-persistent report, or an aperiodic report.
16. The apparatus of claim 1, wherein the report is a UE-initiated report or an event-triggered report.
17. The apparatus of claim 16, wherein the event-triggered report is based at least in part on the KPI satisfying a threshold, and the threshold is configured by a network node or predefined in a standard.
18. The apparatus of claim 16, wherein the event-triggered report is based at least in part on a number of events in which the KPI is below a first threshold satisfying a second threshold.
19. The apparatus of claim 1, wherein the report is a first report, and the one or more processors are individually or collectively configured to: refrain from transmitting a second report until an expiry of a timer.
20. An apparatus for wireless communication at a network node, comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors individually or collectively configured to: transmit a reference signal in accordance with a low-density reference signal pattern, wherein the reference signal is associated with one or more measurement resources, and the one or more measurement resources are associated with one or more of an inference-based channel estimation or a performance monitoring; and receive a report that indicates a key performance indicator (KPI) associated with channel measurements, wherein the channel measurements are associated with the one or more measurement resources.

Description

PERFORMANCE MONITORING ASSOCIATED WITH LOW-DENSITY REFERENCE SIGNAL PATTERNS FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for performance monitoring associated with low-density reference signal patterns. BACKGROUND Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like) . Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) . LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) . A wireless network may include one or more network nodes that support communication for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. “Downlink” (or “DL” ) refers to a communication link from the network node to the UE, and “uplink” (or “UL” ) refers to a communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL) , a wireless local area network (WLAN) link, and/or a wireless personal area network (WPAN) link, among other examples) . The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs  to communicate on a municipal, national, regional, and/or global level. New Radio (NR) , which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. SUMMARY In some implementations, an apparatus for wireless communication at a user equipment (UE) includes a memory; and one or more processors, coupled to the memory, configured to: obtain channel measurements associated with one or more measurement resources, wherein the one or more measurement resources are associated with a low-density reference signal pattern, and the one or more measurement resources are associated with one or more of an inference-based channel estimation or a performance monitoring; determine a key performance indicator (KPI) based at least in part on the channel measurements; and transmit a report that indicates one or more of the KPI or the channel measurements. In some implementations, an apparatus for wireless communication at a network node includes a memory; and one or more processors, coupled to the memory, configured to: transmit a reference signal in accordance with a low-density reference signal pattern, wherein the reference signal is associated with one or more measurement resources, and the one or more measurement resources are associated with one or more of an inference-based channel estimation or a performance monitoring; and receive a report that indicates a KPI associated with channel measurements, wherein the channel measurements are associated with the one or more measurement resources. In some implementations, a method of wireless communication performed by a UE includes obtaining channel measurements associated with one or more  measurement resources, wherein the one or more measurement resources are associated with a low-density reference signal pattern, and the one or more measurement resources are associated with one or more of an inference-based channel estimation or a performance monitoring; determining a KPI based at least in part on the channel measurements; and transmitting a report that indicates one or more of the KPI or