Link Failure Cause Analysis in Self-Optimizing Networks
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Solution Overview
Problem
In self-optimizing networks, existing methods cannot accurately determine whether a link failure is caused by a handover preparation failure, leading to incorrect optimization.
Innovation Solution
A method that involves receiving and analyzing identification information from user equipment and base stations to determine if a link failure is due to a handover preparation failure, allowing the network to optimize more accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the network side determines link failure cause using existing link failure information, then the determination process is simple, but the accuracy is insufficient and cannot distinguish handover preparation failures
Solution Approach 1:
The source base station performs preliminary actions by storing identification information of user equipment before handover occurs, and proactively sends this identification information to target base stations along with handover requests. This preliminary preparation enables target base stations to quickly identify and analyze handover preparation failures without complex real-time processing, thereby improving determination accuracy while maintaining manageable complexity.
Solution Approach 2:
The identification information acts as an intermediary element that bridges the source base station and target base station. By embedding this identification information in handover request messages and link failure reports, the system enables indirect communication and correlation between base stations, allowing accurate determination of handover preparation failures without requiring complex direct coordination mechanisms.
2Reliability
If the network side optimizes based on incomplete link failure analysis, then the optimization process is fast, but the optimization correctness is poor
Solution Approach 1:
The system implements feedback mechanisms where target base stations send link failure reports containing identification information back to the source base station. This feedback loop enables the source base station to accurately determine whether link failures resulted from handover preparation failures, ensuring correct network optimization decisions while maintaining efficient timing through automated feedback processing.
3Productivity
If the network side cannot distinguish handover preparation failures from other issues, then the system operation is simple, but the optimization effectiveness is reduced
Solution Approach 1:
The system segments the link failure analysis by introducing identification information that specifically isolates handover preparation failures from other types of link failures. By segmenting the failure causes through this identification mechanism, the network can针对性地 optimize for handover issues without being confounded by other failure types, improving optimization effectiveness while managing information complexity through structured segmentation.
Data Source
AI summary
A method and apparatus for analyzing cause of link failure, includes: receiving, by a base station where the user equipment is present when a link failure is observed by the user equipment, identification information transmitted by other base stations or the user equipment, the identification information including: identification associated with the user equipment and/or identification of the user equipment in the base station; and determining, by the base station when it determines that the identification information is stored in the base station, that the link failure is resulted from a handover preparation failure.