Measurement Reporting Pattern for Uplink Feedback Identification

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Solution Overview

Problem

In communication systems, particularly in 3GPP-based networks, there is a need to reliably distinguish between different types of uplink measurement reports due to resource constraints on the feedback channel, making it difficult for the network to identify the type of measurement report content sent by user equipment (UEs).

Innovation Solution

The method involves configuring a measurement reporting pattern that explicitly defines the occurrence of multiple measurement report types in the report signal transmitted over the control channel, allowing the network to identify and multiplex different types of measurement information, enabling reliable identification of report types by the transmitter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If multiple measurement report types are transmitted over the feedback channel, then the amount of measurement information increases, but the difficulty of identifying report types increases due to resource constraints

Engineering Contradiction:

Improveamount of measurement informationVSAvoiddifficulty of identifying report types

Core Design Contradiction:

Quantity of substanceVSDifficulty of detecting and measuring

Solution Approach 1:

The measurement reporting is segmented into different report types (e.g., full CQI reports, differential CQI reports, rank indicators) with distinct formats and contents. Each report type is segmented to carry specific measurement information, allowing the transmitter to identify the report type based on its format characteristics rather than requiring additional identification fields.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parts of the feedback channel are assigned different measurement report types based on local conditions. The system selectively transmits specific report types (e.g., differential CQI for certain subframes, full CQI for others) based on channel conditions and resource availability, optimizing the use of feedback resources while maintaining identifiability through format differentiation.

Inventive Principle:

Principle #3Local quality

2Loss of energy

If the feedback channel resources are constrained, then the overhead is reduced, but the ability to transmit diverse measurement reports is limited

Engineering Contradiction:

Improvefeedback channel overheadVSAvoidability to transmit diverse measurement reports

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The system employs periodic measurement reporting where different report types are transmitted at different periods or subframe intervals. For example, full CQI reports may be transmitted periodically at configured intervals, while differential CQI reports are transmitted in between. This periodic structure reduces overall feedback overhead while maintaining the ability to transmit diverse measurement information when needed.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The measurement reporting system dynamically changes parameters such as report type, reporting period, and differential values based on channel conditions and traffic requirements. By adjusting these parameters, the system optimizes feedback channel usage, transmitting detailed reports only when necessary and using compact differential reports during stable conditions, thereby reducing overhead while preserving adaptability.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If measurement reports are transmitted frequently, then the channel quality feedback is improved, but the feedback channel resource consumption increases

Engineering Contradiction:

Improvechannel quality feedback accuracyVSAvoidfeedback channel resource consumption

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

Instead of transmitting complete measurement reports at every opportunity, the system transmits partial measurement information using differential encoding. When channel conditions are stable, only the differential change from the previous report is transmitted, significantly reducing resource consumption while maintaining adequate feedback accuracy. Full reports are transmitted only when necessary to reset the differential baseline or when channel conditions change significantly.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS9258080B2Communication terminal and method for use in a communication terminal

Publication Date: 2016.02.09 PANASONIC HOLDINGS CORP

AI summary

The present invention describes a method for configuring a measurement report type to be used by a receiver to report a measurement to a transmitter, wherein the measurement is reported to the transmitter in a report signal over a control channel. The method includes selecting a first measurement report type and at least one second measurement report type to be used by the receiver to report the measurement, generating a measurement reporting pattern defining an occurrence of the first measurement report type and the at least one second measurement report type in the report signal transmitted by the receiver to the transmitter over control channel, and notifying the first measurement report type, the at least one second measurement report type, and the generated measurement reporting pattern to the receiver.