Configurable Modulation Constellations for Wireless Robustness

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Solution Overview

Problem

Current wireless communication standards, such as LTE and NR, rely on a limited set of preconfigured modulation constellations, which may not be sufficient to address issues like robustness against channel mismatches, phase noise, and non-linearity, nor do they provide optimal shaping or physical layer security.

Innovation Solution

The proposed solution involves a more sophisticated signaling mechanism that allows for the use of configurable and irregular modulation constellations, including constellation clouds, which can be signaled explicitly or implicitly. This approach includes feedback mechanisms to support constellation updates and improve performance based on real-time conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If preconfigured modulation constellations (QPSK, 16QAM, 64QAM) are used, then modulation implementation simplicity is improved, but robustness against channel mismatches and phase noise deteriorates

Engineering Contradiction:

Improvemodulation implementation simplicityVSAvoidrobustness against channel mismatches and phase noise

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies dynamics by transitioning from static, preconfigured modulation constellations to dynamic, configurable constellations that can be adapted in real-time. The system enables flexible modulation scheme selection and constellation configuration based on current channel conditions, allowing the modulation parameters to change dynamically rather than being fixed, thereby improving robustness while maintaining implementation feasibility through configured rather than fully predefined approaches

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements parameter changes by enabling modification of modulation constellation parameters such as constellation size, geometry, and mapping configurations. Instead of being limited to fixed QAM/PSK constellations, the system allows configurable parameter adjustments including irregular constellation shapes and cloud-based modulations, where parameters like constellation points, decision regions, and mapping rules can be dynamically adjusted to optimize performance against channel mismatches and phase noise

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If regular constellations (QPSK, 16QAM, 64QAM) are used, then signaling simplicity is improved, but shaping performance and PAPR optimization deteriorates

Engineering Contradiction:

Improvesignaling complexityVSAvoidshaping performance and PAPR optimization

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent applies segmentation by dividing the modulation configuration into separate components: constellation set signaling, constellation selection signaling, and actual data modulation. This segmentation allows the system to maintain manageable signaling complexity by separating the configuration information from the data transmission, while enabling sophisticated constellation shapes and configurations to be applied without proportionally increasing overall signaling burden

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs composite materials metaphorically through composite modulation approaches that combine multiple constellation types and configurations. The system supports irregular constellations, constellation clouds, and hybrid modulation schemes that integrate different modulation characteristics, creating composite modulation structures that achieve superior shaping performance and PAPR optimization compared to single regular constellation approaches

Inventive Principle:

Principle #40Composite materials

3Stability of the object's composition

If limited constellation options are used, then system compatibility and standard compliance are improved, but adaptability to different channel conditions and security requirements deteriorates

Engineering Contradiction:

Improvestandard complianceVSAvoidadaptability to channel conditions and security requirements

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent applies universality by designing a multi-functional modulation framework that can handle various modulation types and configurations within a single system architecture. The system supports multiple constellation sets, irregular constellations, and configurable parameters while maintaining compatibility with existing wireless communication standards, allowing the same framework to serve multiple functions including standard-compliant operation and advanced adaptive modulation for different channel conditions and security requirements

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12335085B2Methods, apparatus, and systems for configureable modulation in wireless communications

Publication Date: 2025.06.17 HUAWEI TECH CO LTD

AI summary

The present disclosure relates to configurable modulation in wireless communications. Constellation set signaling and constellation selection signaling are communicated in a wireless communication network. The constellation set signaling is associated with modulation of data using each constellation in a constellation set that includes multiple constellations. The constellation selection signaling is indicative of one of the multiple constellations of the constellation set that is to be used in modulation of data for transmission in the wireless communication network. Data that is modulated using the one of the multiple constellations is also communicated in the wireless communication network.