User Equipment Radio Link Failure Logging Mechanism
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Solution Overview
Problem
In mobile communication systems, particularly in 5G networks, there is a need for effective methods to manage radio link failures (RLFs) and report related information to ensure seamless service provision, especially in environments with high frequency bands and diverse network configurations.
Innovation Solution
A user equipment (UE) is configured with a processor to perform random access procedures with a base station, including transmitting a random access preamble and receiving a response, while recording log information for RLF declaration operations, using threshold values to determine radio link monitoring and failure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radio link failure reporting is implemented in 5G networks with high frequency bands, then service reliability is improved, but device complexity increases due to additional logging and reporting mechanisms
Solution Approach 1:
The RLF reporting mechanism is segmented into distinct components: log information generation, log information storage, and log information reporting. This segmentation allows the system to manage complexity by handling each function separately while maintaining overall reliability through coordinated operation of these modules.
Solution Approach 2:
The system performs preliminary actions by logging random access procedure information before radio link failure occurs. This preliminary logging enables post-failure analysis and reporting without affecting real-time communication reliability, as the data collection happens in advance during normal operation.
2Difficulty of detecting and measuring
If detailed log information is recorded for random access procedures, then troubleshooting capability is improved, but information storage requirements increase
Solution Approach 1:
The system extracts only the essential random access procedure information needed for troubleshooting, such as preamble transmission details and response reception status. This selective extraction provides sufficient troubleshooting capability while minimizing storage requirements by excluding unnecessary data.
Solution Approach 2:
The logging mechanism applies local quality by recording detailed information specifically for random access procedures rather than all communication activities. This targeted approach concentrates storage resources on the most critical failure-prone operations, improving troubleshooting effectiveness without proportionally increasing overall storage requirements.
3Length of stationary object
If radio link monitoring is performed in super-high frequency bands, then transmission distance is extended, but detection precision requirements increase due to path loss variations
Solution Approach 1:
The system implements feedback mechanisms where the base station provides random access responses that confirm successful reception of preambles. This feedback loop enables the UE to adjust its transmission parameters and accurately detect link status despite path loss variations in super-high frequency bands, maintaining detection precision over extended transmission distances.
Solution Approach 2:
The monitoring mechanism adapts to super-high frequency characteristics by changing detection parameters such as threshold values and measurement intervals. These parameter adjustments compensate for increased path loss and variability, enabling reliable detection precision across extended transmission distances in mmWave environments.
Data Source
AI summary
A user equipment for transmitting and receiving a signal in a wireless communication system, includes: a transceiver; and at least one processor configured to perform a random access procedure with a base station and record log information that is information related to the random access procedure, wherein the random access procedure includes transmitting a random access preamble to the base station and receiving, from the base station, a random access response that is a response to the transmission of the random access preamble.