Flexible Channel Feedback Reporting for Wireless Systems

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Solution Overview

Problem

Wireless communication systems face inefficiencies in resource utilization for channel quality feedback, particularly as the number of users increases, due to the need for extensive feedback across multiple transmission techniques and base stations.

Innovation Solution

Implementing different reverse link reporting types for various sectors, allowing access terminals to selectively transmit channel information based on instructions related to scheduling modes and transmission techniques, thereby optimizing feedback to minimize resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If comprehensive channel information feedback is provided for all sectors and transmission modes, then measurement precision is improved, but device complexity increases

Engineering Contradiction:

Improvechannel information feedback accuracyVSAvoidfeedback system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the feedback mechanism by implementing different reporting types (first reporting type and second reporting type) for different sectors. The first reporting type is used for non-serving sectors while the second reporting type is used for serving sectors, allowing the system to provide comprehensive feedback accuracy without overwhelming complexity across all sectors uniformly

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by tailoring the feedback reporting format to the specific sector type. Non-serving sectors receive simplified feedback (first reporting type) while serving sectors receive detailed feedback (second reporting type), optimizing the balance between measurement precision and device complexity for each local context

Inventive Principle:

Principle #3Local quality

2Loss of information

If detailed feedback is transmitted for all transmission techniques and base stations, then information completeness is improved, but loss of substance increases

Engineering Contradiction:

Improvefeedback information completenessVSAvoidresource consumption

Core Design Contradiction:

Loss of informationVSLoss of substance

Solution Approach 1:

The patent extracts only the necessary feedback information for each sector type. For non-serving sectors, only essential channel information is transmitted using the first reporting type, while for serving sectors, more complete information is provided using the second reporting type, thereby maintaining information completeness where needed while reducing overall resource consumption

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies partial action by providing full detailed feedback (second reporting type) only for serving sectors where it is most critical, while providing simplified feedback (first reporting type) for non-serving sectors, achieving adequate information completeness with reduced resource expenditure

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentEP2019504B1Systems and methods for control channel signalling

Publication Date: 2018.10.24 QUALCOMM INC

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AI summary

Methods and apparatuses are disclosed for providing flexible channel information feedback. In some cases this may be according to reporting types assigned by one or more sectors, with different reporting types for each sector. In other cases, a reporting mode is determined to determine the reporting types to be utilized