Serving Beam Selection Using a Measurement Report Pool

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Solution Overview

Problem

Existing communication systems face challenges in efficiently managing beam failure and mobility in high-frequency bands like FR2 due to slow beam switching procedures and sensitivity to blocking effects, which can lead to latency and inefficiencies in beam management.

Innovation Solution

A method and apparatus for maintaining a measurement report pool of downlink reference signals, allowing for the selection and determination of a serving beam based on a selected downlink reference signal, enabling faster beam switching and reducing latency by utilizing a measurement report pool with indexing and efficient beam management mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If traditional beam switching procedures are used in high-frequency bands, then beam management can be performed, but the beam switching speed is slow and latency is high

Engineering Contradiction:

Improvebeam switching speedVSAvoidbeam management latency

Core Design Contradiction:

SpeedVSLoss of time

Solution Approach 1:

The terminal maintains a measurement report pool containing multiple measurement reports with downlink reference signal information in advance. When beam switching is needed, the base station can quickly indicate a serving beam from the pre-collected pool without requiring new measurements, thus reducing beam switching latency and improving switching speed

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The measurement report pool acts as a buffer or cushion of pre-collected beam information. This pool provides ready-to-use downlink reference signal measurements that can be immediately applied when beam switching is required, cushioning against the delays that would otherwise occur during measurement and selection processes

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Measurement precision

If measurement reports are frequently updated and transmitted, then beam management accuracy is improved, but signaling overhead increases

Engineering Contradiction:

Improvebeam management accuracyVSAvoidsignaling overhead

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

Instead of transmitting complete measurement reports frequently, the system transmits only partial information - specifically, indices identifying selected measurement reports and downlink reference signals from the pre-maintained pool. This partial action approach maintains beam management accuracy while significantly reducing signaling overhead

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The terminal maintains copies of measurement reports locally in the measurement report pool. When beam management is needed, instead of re-transmitting full measurement data, the system uses indices to reference these local copies, effectively using a simplified copy/reference mechanism that reduces signaling while preserving measurement precision

Inventive Principle:

Principle #26Copying

Data Source

PatentUS12526033B2Apparatus, method, and computer program for determining a serving beam using a measurement report pool

Publication Date: 2026.01.13 NOKIA TECHNOLOGIES OY

AI summary

An apparatus including: at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: maintain a measurement report pool including a plurality of measurement reports provided to a base station, each measurement report indicating one or more downlink reference signals; receive information indicating a selected measurement report within the measurement report pool and indicating a selected downlink reference signal within the selected measurement report from a base station; and determine a serving beam based on the selected downlink reference signal within the selected measurement report.