Machine Learning Phase Ambiguity Limiting Wireless Networks

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Solution Overview

Problem

Next-generation wireless communication networks face challenges in complexity, requiring efficient machine learning solutions to manage and optimize parameters, particularly due to phase ambiguity issues that complicate training and operation.

Innovation Solution

Implementing machine learning systems with phase ambiguity limitation, allowing for reduced training steps and improved processing efficiency by mapping solutions to a limited phase format, enabling better control of wireless communication systems, including beamforming and MIMO operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If machine learning systems are used to optimize wireless communication networks, then network performance and efficiency are improved, but the complexity of training and processing increases due to phase ambiguity

Engineering Contradiction:
Improvenetwork performanceVSAvoidtraining complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by transforming the phase ambiguity problem into a constrained optimization problem. Specifically, it limits the phase search space to a finite set of discrete phase values (e.g., 4, 8, or 16 predefined phase options) rather than searching across all possible continuous phase values. This discretization of the phase parameter significantly reduces the complexity of machine learning training while maintaining network performance optimization.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If phase ambiguity is not limited, then more comprehensive solutions are explored, but training steps and processing time increase significantly

Engineering Contradiction:
Improvesolution comprehensivenessVSAvoidtraining time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent implements partial action by selectively exploring only a subset of possible phase solutions rather than exhaustively searching all phase combinations. By predefined limiting the phase options to a manageable set (e.g., 4 or 8 discrete phases), the system achieves sufficient solution comprehensiveness for practical wireless communication scenarios while dramatically reducing training time and computational resources required.

Inventive Principle:
Principle #16Partial or excessive action

3Reliability

If the machine learning system explores all phase possibilities, then optimal solutions may be found, but processing efficiency and convergence speed decrease

Engineering Contradiction:
Improvesolution optimalityVSAvoidprocessing speed
Core Design Contradiction:
ReliabilityVSSpeed

Solution Approach 1:

The patent applies segmentation by dividing the continuous phase space into discrete segments or bins. Instead of treating phase as a continuous variable requiring fine-grained search, the phase range is segmented into a finite number of discrete levels (e.g., 4, 8, or 16 phase quantization levels). This segmentation maintains solution optimality within each segment while enabling much faster processing and convergence during machine learning training.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20240223251A1Machine learning for wireless communication
Publication Date: 2024.07.04 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
  • US20240223251A1 patent drawing
  • US20240223251A1 patent drawing

AI summary

There is disclosed a machine learning system. The machine learning system is configured to provide an output based on an input, the input representing a status of a wireless communication system comprising a plurality of radio nodes, the output representing an action for the wireless communication system, the machine learning system is configured for a phase ambiguity limitation regarding the output. The disclosure also pertains to related devices and methods, for example radio nodes and a wireless communication system.