CE Level Mismatch Detection in Wireless Devices
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately determining the coverage enhancement level of Machine-Type-Communication (MTC) devices, leading to inefficient use of radio resources and potential mismatches between configured and actual coverage levels, which can result in decoding failures and increased power consumption.
Innovation Solution
A method and system for identifying coverage enhancement (CE) level mismatch by determining the current CE mode and estimated signal quality of wireless devices, allowing for reconfiguration to optimize CE mode operation and efficiently use radio resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coverage enhancement techniques are employed to improve signal reception in remote locations, then coverage reliability is improved, but device complexity and power consumption increase
Solution Approach 1:
The system enables self-service by allowing the network to autonomously detect CE level mismatches and trigger reconfiguration procedures without requiring complex UE-side decision-making. The network node monitors uplink signals, determines actual CE levels, and autonomously initiates reconfiguration when mismatches are detected, reducing UE complexity while maintaining reliable coverage enhancement.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting CE level configuration parameters based on detected mismatches. The system changes the repetition number parameters and CE mode parameters in response to detected mismatches between configured and actual coverage levels, allowing the system to adapt to changing channel conditions without increasing device complexity.
2Reliability
If coverage enhancement techniques are employed to improve signal reception in remote locations, then coverage reliability is improved, but power consumption increases
Solution Approach 1:
The system implements feedback mechanisms where the network continuously monitors uplink signal quality and detects CE level mismatches. This feedback loop allows the network to identify when the configured CE level does not match the actual channel conditions and trigger appropriate reconfiguration, ensuring energy-efficient operation by avoiding unnecessary coverage enhancement when not needed.
Solution Approach 2:
The patent applies dynamics by enabling dynamic reconfiguration of CE parameters based on real-time channel conditions. The system transitions from static CE configuration to dynamic adjustment, where CE levels are adapted based on detected mismatches and current channel quality, allowing the system to optimize power consumption by using coverage enhancement only when necessary.
3Device complexity
If the network configures a specific CE level for MTC devices, then resource allocation is simplified, but mismatch between configured and actual coverage levels occurs
Solution Approach 1:
The patent replaces the manual/mechanical configuration approach with an automated detection and reconfiguration system. Instead of relying on static network configuration, the system uses automated mismatch detection through uplink signal analysis and triggers reconfiguration procedures, substituting the mechanical configuration process with an intelligent, adaptive system that maintains both simplicity and accuracy.
Solution Approach 2:
The system performs preliminary detection of CE level mismatches by monitoring uplink signals before actual communication failures occur. By detecting mismatches early and triggering reconfiguration proactively, the system prevents communication failures and ensures accurate coverage level matching while maintaining simple network configuration management.
4Reliability
If MTC devices operate in enhanced coverage mode with higher repetitions, then decoding reliability is improved, but radio resource efficiency decreases
Solution Approach 1:
The patent applies partial action by using coverage enhancement (higher repetitions) only when actually needed, rather than always. The mismatch detection system identifies when the configured CE level exceeds what is actually required for reliable decoding and triggers reconfiguration to reduce repetitions, thereby maintaining decoding reliability while improving radio resource efficiency by avoiding excessive coverage enhancement.
Data Source
AI summary
A method in a wireless device includes receiving, from a network node, an indication of a current coverage enhancement, CE, mode of the wireless device with respect to a first cell. The method also includes determining an estimated signal quality of the wireless device with resect to the first cell and if the current CE mode is a normal CE mode and the estimated signal quality of the wireless device with respect to the first cell is one of greater than and equal to a lower threshold and less than an upper threshold, adapting at least one requirement to meet enhanced CE mode requirements corresponding to an enhanced CE mode.