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US-12627367-B2 - Measurement reporting with delta values

US12627367B2US 12627367 B2US12627367 B2US 12627367B2US-12627367-B2

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a first transmit-receive point (TRP), a first channel state information reference signal (CSI-RS) associated with the first TRP and a first beam. The UE may receive, from the first TRP or a second TRP, a second CSI-RS associated with the first TRP or the second TRP, wherein the second CSI-RS is associated with a second beam. The UE may transmit, to the first TRP or the second TRP, an indication of a delta value between a measurement of the first CSI-RS and a measurement of the second CSI-RS. Numerous other aspects are described.

Inventors

  • Konstantinos Dimou
  • Yan Zhou
  • Tao Luo

Assignees

  • QUALCOMM INCORPORATED

Dates

Publication Date
20260512
Application Date
20240805

Claims (20)

  1. 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, individually and collectively configured to cause the UE to: receive a first channel state information reference signal (CSI-RS) associated with a first transmit receive point (TRP) and a first beam; receive a second CSI-RS associated with a second TRP and a second beam; and transmit an indication of a difference between a measurement of the first CSI-RS and a measurement of the second CSI-RS.
  2. 2 . The apparatus of claim 1 , wherein the first CSI-RS is received from the first TRP.
  3. 3 . The apparatus of claim 1 , wherein the second CSI-RS is received from the second TRP.
  4. 4 . The apparatus of claim 1 , wherein the indication is transmitted to a single TRP that is either the first TRP or the second TRP.
  5. 5 . The apparatus of claim 1 , wherein the one or more processors are individually and collectively configured to further cause the UE to: transmit, to the first TRP, an indication of a measurement of the first CSI-RS.
  6. 6 . The apparatus of claim 5 , wherein a link associated with the first CSI-RS corresponds to a reference link, and the difference is relative to the measurement of the first CSI-RS associated with the reference link.
  7. 7 . The apparatus of claim 1 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is a difference between a reference signal received power (RSRP) associated with the first CSI-RS and an RSRP associated with the second CSI-RS.
  8. 8 . The apparatus of claim 1 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is: a difference between a reference signal received quality (RSRQ) associated with the first CSI-RS and an RSRQ associated with the second CSI-RS, a difference between a signal-to-interference-and-noise ratio (SINR) associated with the first CSI-RS and an SINR associated with the second CSI-RS, a difference between a modulation and coding scheme (MCS) associated with the first CSI-RS and an MCS associated with the second CSI-RS, or a difference between a log likelihood ratio (LLR) associated with the first CSI-RS and an LLR associated with the second CSI-RS.
  9. 9 . The apparatus of claim 1 , wherein the one or more processors are individually and collectively configured to further cause the UE to: perform at least one of a measurement of the first CSI-RS or a measurement of the second CSI-RS.
  10. 10 . 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, individually and collectively configured to cause the network node to: transmit a first channel state information reference signal (CSI-RS) associated with a first transmit receive point (TRP) and a first beam; transmit a second CSI-RS associated with a second TRP and a second beam; and receive an indication of a difference between a measurement of the first CSI-RS and a measurement of the second CSI-RS.
  11. 11 . The apparatus of claim 10 , wherein the first CSI-RS is transmitted to the first TRP.
  12. 12 . The apparatus of claim 10 , wherein the second CSI-RS is transmitted to the second TRP.
  13. 13 . The apparatus of claim 10 , wherein the indication is received from a single TRP that is either the first TRP or the second TRP.
  14. 14 . The apparatus of claim 10 , wherein the one or more processors are individually and collectively configured to further cause the network node to: receive an indication of a measurement of the first CSI-RS.
  15. 15 . The apparatus of claim 14 , wherein a link associated with the first CSI-RS corresponds to a reference link, and the difference is relative to the measurement of the first CSI-RS associated with the reference link.
  16. 16 . The apparatus of claim 10 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is a difference between a reference signal received power (RSRP) associated with the first CSI-RS and an RSRP associated with the second CSI-RS.
  17. 17 . The apparatus of claim 10 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is: a difference between a reference signal received quality (RSRQ) associated with the first CSI-RS and an RSRQ associated with the second CSI-RS, a difference between a signal-to-interference-and-noise ratio (SINR) associated with the first CSI-RS and an SINR associated with the second CSI-RS, a difference between a modulation and coding scheme (MCS) associated with the first CSI-RS and an MCS associated with the second CSI-RS, or a difference between a log likelihood ratio (LLR) associated with the first CSI-RS and an LLR associated with the second CSI-RS.
  18. 18 . A method for wireless communication performed at a user equipment (UE), comprising: receiving a first channel state information reference signal (CSI-RS) associated with a first transmit receive point (TRP) and a first beam; receiving a second CSI-RS associated with a second TRP and a second beam; and transmitting an indication of a difference between a measurement of the first CSI-RS and a measurement of the second CSI-RS.
  19. 19 . The method of claim 18 , wherein the first CSI-RS is received from the first TRP.
  20. 20 . The method of claim 18 , wherein the second CSI-RS is received from the second TRP.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This patent application is a continuation of U.S. patent Ser. No. 17/821,911, filed on Aug. 24, 2022, entitled “MEASUREMENT REPORTING WITH DELTA VALUES,” which claims priority to U.S. Provisional Patent Application No. 63/261,136, filed on Sep. 13, 2021, entitled “MEASUREMENT REPORTING WITH DELTA VALUES,” and assigned to the assignee hereof. The disclosures of the prior Applications are considered part of and are incorporated by reference into this patent application. FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for measurement reporting with delta values. 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 base stations that support communication for a user equipment (UE) or multiple UEs. A UE may communicate with a base station via downlink communications and uplink communications. “Downlink” (or “DL”) refers to a communication link from the base station to the UE, and “uplink” (or “UL”) refers to a communication link from the UE to the base station. 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: receive, from a first transmit-receive point (TRP), a first channel state information reference signal (CSI-RS) associated with the first TRP and a first beam; receive, from the first TRP or a second TRP, a second CSI-RS associated with the first TRP or the second TRP, wherein the second CSI-RS is associated with a second beam; and transmit, to the first TRP or to the second TRP, an indication of a delta value between a measurement of the first CSI-RS and a measurement of the second CSI-RS. In some implementations, an apparatus for wireless communication at a first TRP includes a memory and one or more processors, coupled to the memory, configured to: transmit, to a UE, a first CSI-RS associated with the first TRP and a first beam; and receive, from the UE, an indication of a delta value between a measurement of the first CSI-RS and a measurement of a second CSI-RS, wherein the second CSI-RS is associated with the first TRP or a second TRP, and the second CSI-RS is associated with a second beam. In some implementations, a method of wireless communication performed by a UE includes receiving, from a first TRP, a first CSI-RS associated with the first TRP and a first beam; receiving, from the first TRP or a second TRP, a second CSI-RS associated with the first TRP or the second TRP, wherein the second CSI-RS is associated with a second beam; and transmitting, to the first TRP or to the second TRP, an indication of a delta value between a measurement of the first CSI-RS and a measurement of the second CSI-RS. In some implementations, a method of wireless communication performed by a first TRP includes tra