Adaptive Reference Signal Allocation for Precise Channel Estimation

Solution Overview

Problem

Current reference signal transmission methods are inflexible and unable to meet the increasing demand for high precision channel estimation in wireless communication, leading to inefficient resource utilization and challenging channel estimation in high-mobility scenarios.

Innovation Solution

A method for dynamically adjusting reference signal distribution based on channel characteristics and energy scale information, allowing for uneven resource allocation to improve channel estimation precision and resource utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If reference signals are evenly distributed in time domain and frequency domain, then resource allocation is simple and uniform, but channel estimation precision is insufficient and resource utilization is inefficient

Engineering Contradiction:

Improvechannel estimation precisionVSAvoidreference signal distribution complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies local quality by making reference signal distribution non-uniform and adaptive to local channel conditions. Different reference signal resources are allocated to different time-frequency regions based on channel characteristic information, allowing channel estimation precision to be improved in specific areas where it is most needed rather than using a uniform distribution across all resources.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements dynamics by enabling the reference signal distribution to adapt dynamically to changing channel conditions. The communication apparatus determines reference signal resources based on channel characteristic information that reflects current channel states, allowing the system to adjust reference signal allocation in response to varying mobility scenarios and environmental conditions.

Inventive Principle:

Principle #15Dynamics

2Productivity

If reference signals are evenly distributed, then resource allocation is straightforward, but resource utilization is inefficient in high-mobility scenarios

Engineering Contradiction:

Improveresource utilization efficiencyVSAvoidreference signal resource determination complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by modifying the distribution parameters of reference signals based on channel characteristic information. Instead of using fixed even distribution parameters, the system adjusts reference signal resource allocation parameters dynamically according to channel conditions, thereby improving resource utilization efficiency in varying mobility scenarios.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If conventional reference signal transmission is used, then system complexity is low, but it cannot meet the increasing demand for high precision channel estimation

Engineering Contradiction:

Improvechannel estimation precisionVSAvoidadaptability to different channel conditions

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamics by enabling the reference signal distribution to adapt dynamically to changing channel conditions. The communication apparatus determines reference signal resources based on channel characteristic information that reflects current channel states, allowing the system to adjust reference signal allocation in response to varying mobility scenarios and environmental conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies parameter changes by modifying the distribution parameters of reference signals based on channel characteristic information. Instead of using fixed even distribution parameters, the system adjusts reference signal resource allocation parameters dynamically according to channel conditions, thereby improving resource utilization efficiency in varying mobility scenarios.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20260032032A1Reference signal transmission method and communication apparatus

Publication Date: 2026.01.29 HUAWEI TECH CO LTD

AI summary

A reference signal transmission method and a communication apparatus, where a first communication apparatus determines a reference signal resource based on N pieces of channel characteristic information representing a channel between the first communication apparatus and a second communication apparatus and M pieces of energy scale information. Any piece of channel characteristic information indicates a correspondence between an energy component of the channel and a transmission resource, and energy indicated by one or more pieces of energy scale information in correspondences indicated by one or more pieces of channel characteristic information corresponds to one resource unit. The first communication apparatus sends, to the second communication apparatus, first information, and the first communication apparatus and the second communication apparatus transmit a reference signal on the reference signal resource.