Dynamic CQI Quantization for Subband-Aware Resource Allocation

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Solution Overview

Problem

Existing wireless communication systems face inefficiencies in dynamically adjusting the number of bits used to represent channel quality indicator (CQI) values based on the number of subbands to be reported, leading to suboptimal resource allocation and communication performance.

Innovation Solution

A method and apparatus for dynamically quantizing CQI values based on the number of subbands to be reported, allowing for efficient resource allocation by adjusting the number of bits used to represent each CQI value.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a fixed number of bits is used to represent CQI values regardless of the number of subbands, then the system complexity is reduced and ease of operation is improved, but resource allocation efficiency deteriorates and communication performance is suboptimal

Engineering Contradiction:

Improveease of operationVSAvoidresource allocation efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent implements dynamic bit allocation for CQI reporting where the number of bits used to represent CQI values is adjusted based on the number of subbands to be reported. This dynamic adaptation allows the system to optimize resource allocation efficiency while maintaining ease of operation through automated adjustment without complex manual configuration.

Inventive Principle:

Principle #15Dynamics

2Productivity

If the number of bits used to represent CQI values is dynamically adjusted based on the number of subbands, then resource allocation efficiency is improved and communication performance is enhanced, but system complexity increases

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent changes the parameter of bit allocation dynamically based on the number of subbands. By adjusting the number of bits used to represent CQI values according to subband count, the system achieves improved resource allocation efficiency while managing complexity through parameter-based adaptation rather than structural complexity.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If more bits are used to represent CQI values for each subband, then measurement precision is improved and channel quality reporting accuracy is enhanced, but data transmission overhead increases and resource efficiency decreases

Engineering Contradiction:

Improvechannel quality reporting accuracyVSAvoiddata transmission overhead

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent applies local quality by allocating different numbers of bits to represent CQI values for different numbers of subbands. This localized optimization ensures that measurement precision is improved only where necessary, while minimizing data transmission overhead by using fewer bits when fewer subbands are reported, thus achieving resource efficiency.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12463784B2Dynamic quantization of channel quality information

Publication Date: 2025.11.04 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a signal associated with a communication channel. The UE may transmit a channel quality indicator (CQI) report comprising one or more CQI values based at least in part on a determined number of bits used to represent the one or more CQI values. The number of bits used to represent the one or more CQI values is based at least in part on a number of the one or more subbands. Numerous other aspects are described.