UE RRC Failure Logging and Reporting Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional drive tests in mobile communication systems are time-consuming and labor-intensive, requiring manual data collection and increasing costs, while minimizing drive tests aim to optimize radio network performance but lack efficient methods for logging channel status and connection failures.
Innovation Solution
A method and apparatus for logging channel status or connection failure, where a terminal attempts random access, logs failure information, and transmits it to a connected base station, and uses a positioning module to acquire and log location information in idle mode, allowing efficient reporting of channel status and failure data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional drive tests are performed manually with test apparatuses on vehicles, then radio environment information can be collected for base station configuration, but the process becomes time-consuming and labor-intensive
Solution Approach 1:
The terminal device autonomously performs measurement and logging of radio environment information without requiring manual operation. The terminal self-configures measurement parameters, autonomously measures channel status and connection failures, and automatically logs the data according to configured criteria, eliminating the need for operators to carry test apparatuses on vehicles.
Solution Approach 2:
The terminal device acts as an intermediary between the network and the radio environment, collecting measurement data that would traditionally require direct observation by test equipment on vehicles. The terminal relays this information to the network, enabling remote collection of radio environment data without manual drive tests.
2Loss of information
If terminal logs measurement information in idle mode without communication capability, then connection failure information can be captured, but the terminal cannot transmit the logged information immediately
Solution Approach 1:
The terminal performs preliminary logging of measurement information and connection failure data while in idle mode, preparing the data for future transmission. The terminal proactively captures and stores relevant information including channel status, failure causes, and location data before connectivity is restored, so that when communication becomes possible, the data is already ready for immediate reporting.
Solution Approach 2:
The system implements feedback mechanisms where the terminal monitors its own connection status and automatically triggers transmission of logged information when communication capability is restored. The network can also provide feedback through configuration messages that instruct the terminal on what information to log and when to transmit it.
3Measurement precision
If terminal continuously monitors and logs channel status in idle mode, then comprehensive measurement data is obtained, but terminal power consumption increases
Solution Approach 1:
Instead of continuous monitoring, the terminal performs periodic measurements of channel status at predetermined intervals while in idle mode. The measurement period and logging frequency are configured by the network based on optimization needs, allowing the terminal to balance measurement comprehensiveness with power conservation by sleeping between measurement cycles.
Solution Approach 2:
The terminal applies different measurement and logging strategies based on local conditions and requirements. Measurement parameters, logging intervals, and monitoring intensity are customized according to specific cell characteristics, terminal capabilities, and network optimization priorities, rather than using uniform continuous monitoring across all scenarios.
4Loss of information
If terminal reports all logged measurement information upon connection, then complete data is provided for network optimization, but transmission time and network resources are consumed
Solution Approach 1:
The network extracts and requests only the specific measurement information and failure data that are most relevant for optimization purposes, rather than requiring the terminal to transmit all logged data. The network can selectively request particular types of information based on current optimization needs, reducing transmission overhead while maintaining data quality.
Solution Approach 2:
The system allows for partial reporting where the terminal transmits a subset of logged information that meets minimum requirements for optimization. The network can accept partial data sets that provide sufficient information for key optimization decisions, rather than requiring complete exhaustive data from all measurement categories.
Data Source
AI summary
The present invention relates to a method and an apparatus for logging a radio resource control (RRC) failure of user equipment (UE) and receiving the log. According to one embodiment of the present invention, a method for logging an RRC failure of UE may comprise the steps of: attempting random access; if the failure of random access is sensed, logging information on the failure; and if the success of random access is sensed, transmitting information on the failure logged before the success to a connected base station. According to one embodiment of the present invention, an apparatus and a method which effectively log a channel state or a connection failure can be provided.