Distributed Validation Models for Adaptive Wireless ML Updates

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Solution Overview

Problem

Existing machine learning (ML) models in wireless communication networks face challenges such as high complexity, slow convergence, increased inference time, and excessive signaling load due to large data requirements and frequent radio measurements, which hinder timely decision-making in dynamic radio environments.

Innovation Solution

A client device receives a validation model from a centralized unit, collects radio measurements, computes gradient vectors, and transmits them to the centralized unit for clustering and model updates, enabling efficient adaptation to local environments without excessive signaling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a global ML model is implemented to model different radio environments, then the model coverage and applicability are improved, but the model complexity increases and convergence speed decreases

Engineering Contradiction:
Improvemodel coverageVSAvoidmodel complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the global ML model into multiple local ML models, each trained on data from specific radio environments. The network device maintains a model pool containing these segmented local models, and selects appropriate models based on current radio conditions. This segmentation reduces the complexity of any single model while maintaining comprehensive coverage across different environments.

Inventive Principle:
Principle #1Segmentation

2Manufacturing precision

If a complex ML model is used to effectively model different radio environments, then the modeling accuracy is improved, but the inference time increases and decision-making delay occurs

Engineering Contradiction:
Improvemodeling accuracyVSAvoidinference time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent performs preliminary training of multiple local ML models offline during periods when radio conditions are relatively stable. These pre-trained models are stored in a model pool at the network device. When radio conditions change, the system quickly selects and switches to a pre-trained model that matches the current conditions, avoiding the need for real-time training and inference of complex models, thus reducing inference time while maintaining accuracy.

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If large amounts of data are collected to optimize the ML model parameters, then the model accuracy is improved, but the signaling load and control channel burden increase

Engineering Contradiction:
Improvemodel accuracyVSAvoidsignaling load
Core Design Contradiction:
Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The patent implements local ML model training at user equipment, where each device trains models using its own locally collected radio environment data. This eliminates the need to transmit large amounts of raw measurement data to the network for centralized model training. Only essential model parameters and performance metrics are exchanged with the network, significantly reducing signaling load while maintaining high model accuracy through localized adaptation.

Inventive Principle:
Principle #3Local quality

4Adaptability or versatility

If frequent radio measurements are performed to optimize the ML model, then the model adaptability is improved, but the power consumption and processing burden increase

Engineering Contradiction:
Improvemodel adaptabilityVSAvoidpower consumption
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic model training and updating at user equipment, rather than continuous real-time training. The system collects radio measurements over predetermined time periods, then performs model training or updates at these periodic intervals. This periodic approach maintains model adaptability to changing radio conditions while significantly reducing the instantaneous power consumption and processing burden compared to continuous training operations.

Inventive Principle:
Principle #19Periodic action

Data Source

PatentUS12574298B2Machine learning model distribution
Publication Date: 2026.03.10 NOKIA TECHNOLOGIES OY
  • US12574298B2 patent drawing
  • US12574298B2 patent drawing
  • US12574298B2 patent drawing

AI summary

According to an example embodiment, a client device is configured to receive a validation model from a centralised unit device, wherein the validation model includes a machine learning model configured to predict an output from an input based on a plurality of model parameters; collect radio measurements corresponding to the input of the validation model and parameters corresponding to the output of the validation model; obtain predicted parameters as the output of the validation model by feeding the collected radio measurements as the input into the validation model; compare the collected parameters and the predicted parameters; compute a plurality of gradient vectors for the plurality of model parameters of the validation model based on the comparison between the collected parameters and the predicted parameters; and transmit the plurality of gradient vectors for the plurality of model parameters of the validation model to the centralised unit device.