EP-4740321-A1 - RADIO RESOURCE MANAGEMENT MEASUREMENT ENHANCEMENT

Abstract

An apparatus configured to process a probing transmission (Tx) beam pattern comprising a plurality of probing Tx beams, one of a beam angle or a Synchronization Signal Block (SSB) index associated with each probing Tx beam, and a size of a full Tx beam pattern comprising a full set of Tx beams, wherein the plurality of probing Tx beams are a subset of full set of Tx beams, perform measurements on reference signals transmitted using each probing Tx beam to obtain measured radio resource management (RRM) values and determine, using an artificial intelligence (AI)/machine learning (ML) model, determined RRM values for Tx beams in the full set of Tx beams that are not included in the probing Tx beams, wherein inputs to the AI/ML model comprise the measured RRM values for each probing Tx beam and the beam angle or SSB index associated with each probing Tx beam.

Inventors

• SARRIGEORGIDIS, KONSTANTINOS
• CUI, JIE
• TANG, YANG

Assignees

• Apple Inc.

Dates

Publication Date

20260513

Application Date

20240826

Claims (1)

1. Attorney Docket No. 30134/86002 Ref. No. P64160WO1 What is Claimed: 1. An apparatus comprising processing circuitry configured to: process, based on signaling received from a base station, a probing transmission (Tx) beam pattern comprising a plurality of probing Tx beams, one of a beam angle or a Synchronization Signal Block (SSB) index associated with each probing Tx beam, and a size of a full Tx beam pattern comprising a full set of Tx beams for the base station, wherein the plurality of probing Tx beams are a subset of full set of Tx beams; perform measurements on reference signals transmitted using each probing Tx beam to obtain measured radio resource management (RRM) values for each probing beam; and determine, using an artificial intelligence (AI)/machine learning (ML) model, determined RRM values for Tx beams in the full set of Tx beams that are not included in the probing Tx beams, wherein inputs to the AI/ML model comprise at least the measured RRM values for each probing Tx beam and the beam angle or SSB index associated with each probing Tx beam. 2. The apparatus of claim 1, wherein the processing circuitry is configured to perform the measurements using reception (Rx) beam sweeping. 3. The apparatus of claim 2, wherein the processing circuitry is further configured to: select a predetermined number of the full set of Tx beams based on the measured RRM values and determined RRM values; and generate, for transmission to the base station, a beam report identifying each of the predetermined number of the full set of Tx beams, wherein each of the predetermined number of Tx beams is reported with a corresponding angle domain or SSB index. Attorney Docket No. 30134/86002 Ref. No. P64160WO1 4. The apparatus of claim 3, wherein each of the predetermined number of Tx beams corresponds to the predetermined number of highest determined Reference Signal Received Power (RSRP) of the measured RRM values or the determined RRM values. 5. The apparatus of claim 3, wherein the processing circuitry is further configured to: perform second measurements on reference signals transmitted using the predetermined number of the Tx beams to obtain second measured RRM values; generate, for transmission to the base station, a further beam report comprising the second measured RRM values for the predetermined number of the Tx beams; and process, based on signaling received from the base station, a beam indication message indicating one of the Tx beams of the full set of Tx beams to be used for reception of signals from the base station. 6. The apparatus of claim 1, wherein the processing circuitry is further configured to: process, based on signaling received from the base station, a second probing Tx beam pattern comprising a second plurality of probing Tx beams transmitted by a neighbor base station and one of a beam angle or a SSB index associated with each second probing Tx beam, wherein a second full Tx beam pattern comprising a second full set of Tx beams for the neighbor base station is a same pattern as the full Tx beam pattern of the base station, wherein the second probing Tx beams are a subset of full set of second Tx beams and the second probing Tx beam pattern is different from the probing Tx beam pattern; Attorney Docket No. 30134/86002 Ref. No. P64160WO1 perform second measurements on reference signals transmitted using each second probing Tx beam to obtain second measured RRM values for each second probing beam; and determine, using the AI/ML model, second determined RRM values for Tx beams in the second full set of Tx beams that are not included in the second probing Tx beams, wherein inputs to the AI/ML model comprise at least the second measured RRM values for each second probing Tx beam and the beam angle or SSB index associated with each second probing Tx beam. 7. The apparatus of claim 1, wherein the processing circuitry is further configured to: process, based on signaling received from the base station, a second probing Tx beam pattern comprising a second plurality of probing Tx beams transmitted by a neighbor base station and one of a beam angle or a SSB index associated with each second probing Tx beam, wherein a second full Tx beam pattern comprising a second full set of Tx beams for the neighbor base station is different from the full Tx beam pattern of the base station, wherein the second probing Tx beams are a subset of full set of second Tx beams and the second probing Tx beam pattern is different from the probing Tx beam pattern; perform second measurements on reference signals transmitted using each second probing Tx beam to obtain second measured RRM values for each second probing beam; pre-process the second measured RRM values and corresponding beam angles or SSB indices to obtain pre-processed second measured RRM values and corresponding beam angles or SSB indices to match an expected number of inputs for the AI/ML model; determine, using the AI/ML model, second determined RRM values, wherein inputs to the AI/ML model comprise at least the Attorney Docket No. 30134/86002 Ref. No. P64160WO1 pre-processed second measured RRM values and corresponding beam angles or SSB indices; and post-process the second determined RRM values and corresponding beam angles or SSB indices to obtain post- processed second determined RRM values and corresponding beam angles or SSB indices to match a number of second Tx beams in the second full set of Tx beams that are not included in the second probing Tx beams. 8. The apparatus of claim 7, wherein the processing circuitry is configured to pre-process the second measured RRM values and corresponding beam angles or SSB indices based on mapping of the beam angle or SSB index associated with each second probing Tx to reference angles associated with the Tx beams of the base station. 9. The apparatus of claim 7, wherein the processing circuitry is configured to post-process the second determined RRM values and corresponding beam angles or SSB indices based on a bicubic interpolation or a near neighbor based interpolation. 10. The apparatus of claim 1, wherein the measured RRM values comprise Layer-3 Reference Signal Received Power (L3-RSRP) measurements. 11. The apparatus of claim 1, wherein the reference signals comprise Channel State Information reference signals (CSI-RS) or SSBs. 12. An apparatus comprising processing circuitry configured to: generate, for transmission to a user equipment (UE), a probing transmission (Tx) beam pattern comprising a plurality of Attorney Docket No. 30134/86002 Ref. No. P64160WO1 probing Tx beams, one of a beam angle or a Synchronization Signal Block (SSB) index associated with each probing Tx beam, and a size of a full Tx beam pattern comprising a full set of Tx beams, wherein the probing Tx beams are a subset of full set of Tx beams; generate, for transmission to the UE, reference signals on each of the probing Tx beams; and process, based on signaling received from the UE, a beam report identifying each of a predetermined number of the full set of Tx beams, wherein each of the predetermined number of Tx beams is reported with a corresponding angle domain or SSB index. 13. The apparatus of claim 12, wherein the processing circuitry is further configured to: generate, for transmission to the UE, reference signals on each of the predetermined number of Tx beams. 14. The apparatus of claim 13, wherein the processing circuitry is further configured to: process, based on signaling received from the UE, a further beam report comprising measured values for the reference signals transmitted using the predetermined number of the Tx beams; select, based on the measured values, one of the predetermined number of the Tx beams; and generate, for transmission to the UE, a beam indication message indicating the one of the Tx beams to be used by the UE for reception of signals. 15. The apparatus of claim 12, wherein the reference signals comprise Channel State Information reference signals (CSI-RS) or SSBs. Attorney Docket No. 30134/86002 Ref. No. P64160WO1 16. The apparatus of claim 12, wherein each of the predetermined number of Tx beams corresponds to the predetermined number of highest determined Reference Signal Received Power (RSRP) values determined by the UE. 17. An apparatus comprising processing circuitry configured to: process, based on signaling received from a base station, a probing transmission (Tx) beam pattern comprising a plurality of probing Tx beams, wherein the probing Tx beams are a subset of a full set of Tx beams used by the base station; perform measurements on reference signals transmitted on each of the probing Tx beams to obtain measured radio resource management (RRM) values for each of the probing Tx beams; and generate, for transmission to the base station, the measured RRM values for each probing beam, a corresponding reception (Rx) beam used to receive each of the probing Tx beams and a beam angle for the corresponding Rx beam. 18. The apparatus of claim 17, wherein the processing circuitry is further configured to: process, based on signaling received from the base station, a beam report identifying each of a predetermined number of the full set of Tx beams, wherein each of the predetermined number of Tx beams is reported with a corresponding Rx beam and beam angle for the Rx beam. 19. The apparatus of claim 18, wherein the processing circuitry is further configured to: perform measurements on reference signals transmitted on each of the predetermined number of Tx beams to obtain second Attorney Docket No. 30134/86002 Ref. No. P64160WO1 measured RRM values for each of the predetermined number of Tx beams; generate, for transmission to the base station, a further beam report comprising the second measured RRM values; and process, based on signaling received from the base station, a beam indication message indicating the one of the predetermined number of Tx beams to be used. 20. The apparatus of claim 17, wherein the reference signals comprise Channel State Information reference signals (CSI-RS) or SSBs.

Description

Attorney Docket No. 30134/86002 Ref. No. P64160WO1 Radio Resource Management Measurement Enhancement Inventors: Konstantinos Sarrigeorgidis, Jie Cui and Yang Tang Priority/Incorporation By Reference [0001] This application claims priority to U.S. Provisional Application Serial No. 63/579,374 filed on August 29, 2023, and entitled “Radio Resource Management Measurement Enhancement,” the entirety of which is incorporated by reference herein. Background [0002] In traditional beam management, a user equipment (UE) performs measurements (e.g., Layer-3 Reference Signal Received Power (L3-RSRP) measurements) across a set of Transmission (Tx) and Reception (Rx) beam pairs. For example, when the number of Tx beams is M and the number of Rx beams is N, the UE will measure all MxN beam pairs and then select the best beam. [0003] This leads to a large measurement overhead. To provide an example, the overhead of reference signals (RS) used for radio resource management (RRM) (e.g., Synchronization Signal Blocks (SSBs) and Channel State Information RS (CSI-RS)) is high in the current New Radio (NR) design. For example, when the SS/PBCH Block Measurement Timing Configuration (SMTC) periodicity is 20ms, the related SMTC overhead in frequency range 2 (FR2) is 25%. There is a need to reduce the overhead related to RRM measurements. Summary [0004] Some example embodiments are related to an apparatus having processing circuitry configured to process, based on signaling received from a base station, a probing transmission (Tx) beam pattern comprising a plurality of probing Tx beams, Attorney Docket No. 30134/86002 Ref. No. P64160WO1 one of a beam angle or a Synchronization Signal Block (SSB) index associated with each probing Tx beam, and a size of a full Tx beam pattern comprising a full set of Tx beams for the base station, wherein the plurality of probing Tx beams are a subset of full set of Tx beams, perform measurements on reference signals transmitted using each probing Tx beam to obtain measured radio resource management (RRM) values for each probing beam and determine, using an artificial intelligence (AI)/machine learning (ML) model, determined RRM values for Tx beams in the full set of Tx beams that are not included in the probing Tx beams, wherein inputs to the AI/ML model comprise at least the measured RRM values for each probing Tx beam and the beam angle or SSB index associated with each probing Tx beam. [0005] Other example embodiments are related to an apparatus having processing circuitry configured to generate, for transmission to a user equipment (UE), a probing transmission (Tx) beam pattern comprising a plurality of probing Tx beams, one of a beam angle or a Synchronization Signal Block (SSB) index associated with each probing Tx beam, and a size of a full Tx beam pattern comprising a full set of Tx beams, wherein the probing Tx beams are a subset of full set of Tx beams, generate, for transmission to the UE, reference signals on each of the probing Tx beams and process, based on signaling received from the UE, a beam report identifying each of a predetermined number of the full set of Tx beams, wherein each of the predetermined number of Tx beams is reported with a corresponding angle domain or SSB index. [0006] Still further example embodiments are related to an apparatus having processing circuitry configured to generate, for transmission to a user equipment (UE), a probing Attorney Docket No. 30134/86002 Ref. No. P64160WO1 transmission (Tx) beam pattern comprising a plurality of probing Tx beams, wherein the probing Tx beams are a subset of a full set of Tx beams, generate, for transmission to the UE, reference signals on each of the probing Tx beams, process, based on signaling received from the UE, measured radio resource management (RRM) values for each probing beam, a corresponding reception (Rx) beam used to receive each of the probing Tx beams and a beam angle for the corresponding Rx beam and determine, using an artificial intelligence (AI)/machine learning (ML) model, determined RRM values for Tx beams in the full set of Tx beams that are not included in the probing Tx beams, wherein inputs to the AI/ML model comprise at least the measured RRM values for each probing Tx beam and the beam angle associated with each corresponding Rx beam. [0007] Additional example embodiments are related to an apparatus having processing circuitry configured to process, based on signaling received from a base station, a probing transmission (Tx) beam pattern comprising a plurality of probing Tx beams, wherein the probing Tx beams are a subset of a full set of Tx beams used by the base station, perform measurements on reference signals transmitted on each of the probing Tx beams to obtain measured radio resource management (RRM) values for each of the probing Tx beams and generate, for transmission to the base station, the measured RRM values for each probing beam, a corresponding reception (Rx) beam used to