Wireless Control Information Detection with Error Check Field

Solution Overview

Problem

In wireless communication systems, blind detection methods for control information often result in incorrect CRC error detection, leading to resource wastage and reliability issues, especially in semi-persistent scheduling scenarios.

Innovation Solution

A method that involves checking a cyclic redundancy check (CRC) error by monitoring control channels and using a specific value in an error check field as a virtual CRC to accurately detect control information, thereby reducing false positives and improving detection accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If blind detection with CRC checking is used to detect control information, then the UE can identify its control channel among multiple multiplexed control channels, but incorrect CRC error detection occurs leading to false positives and resource wastage

Engineering Contradiction:

Improvecontrol information detection accuracyVSAvoidradio resource wastage

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent introduces an error check field as an intermediary verification mechanism between the CRC check and the final detection decision. This additional field acts as a mediator that provides a second layer of validation, reducing false positive detections and improving the reliability of control information detection without requiring additional blind decoding attempts.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The error check field is prepared and transmitted along with the control information before the UE performs detection. This preliminary action allows the UE to verify the integrity of received control information using both CRC and error check field values, enabling faster and more accurate detection without requiring multiple retry attempts, thus conserving radio resources.

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If the UE decodes all pieces of control information to find its own control channel, then the control information can be detected, but the detection accuracy decreases due to incorrect CRC error detection

Engineering Contradiction:

Improvecontrol channel detection capabilityVSAvoiddetection accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The error check field is prepared and transmitted along with the control information before the UE performs detection. This preliminary action allows the UE to verify the integrity of received control information using both CRC and error check field values, enabling faster and more accurate detection without requiring multiple retry attempts, thus conserving radio resources.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an error check field as an intermediary verification mechanism between the CRC check and the final detection decision. This additional field acts as a mediator that provides a second layer of validation, reducing false positive detections and improving the reliability of control information detection without requiring additional blind decoding attempts.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If semi-persistent scheduling is implemented using blind detection, then resource allocation efficiency improves, but false positive CRC detection leads to deterioration in communication reliability

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidwireless communication reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The error check field is prepared and transmitted along with the control information before the UE performs detection. This preliminary action allows the UE to verify the integrity of received control information using both CRC and error check field values, enabling faster and more accurate detection without requiring multiple retry attempts, thus conserving radio resources.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an error check field as an intermediary verification mechanism between the CRC check and the final detection decision. This additional field acts as a mediator that provides a second layer of validation, reducing false positive detections and improving the reliability of control information detection without requiring additional blind decoding attempts.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS8739013B2Method for detecting control information in wireless communication system

Publication Date: 2014.05.27 LG ELECTRONICS INC

AI summary

A method for detecting control information in a wireless communication system is provided. The method includes checking a cyclic redundancy check (CRC) error by monitoring control channels, determining whether a value of an error check field is equal to a specific value, and, if the value of the error check field is equal to the specific value, detecting the control information on the control channel.