NAS Recovery Report for Wireless Network Root Cause Analysis
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Solution Overview
Problem
Current wireless communication networks face challenges in maintaining service performance due to failures that trigger Non-Access Stratum (NAS) recovery, leading to degraded service quality and inefficiencies in identifying and addressing the root causes of these failures.
Innovation Solution
The implementation of a method where a wireless device transmits a NAS recovery report to a network node, detailing the cause and supplementary information of the failure, allowing for root cause analysis and subsequent actions to optimize network parameters and improve service performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NAS recovery is triggered to recover from AS signalling connection failures, then connection reliability is improved, but service performance deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the wireless device reports failure information to the network node. The report includes details about the failed AS signalling connection and the trigger for NAS recovery. This feedback enables the network to analyze failure patterns and adjust parameters to prevent future failures, thereby improving reliability without repeatedly degrading service performance through NAS recovery procedures.
2Adaptability or versatility
If failure information is reported to enable root cause analysis, then network optimization capability is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential failure information from the wireless device and transmits it to the network node. The report includes specific elements such as the failure cause, cell identity, and timing information, while excluding unnecessary data. This selective extraction approach enables effective network optimization without imposing excessive complexity on the wireless device.
3Stability of the object's composition
If NAS recovery procedure is executed to restore signalling connection, then connection stability is improved, but service continuity deteriorates
Solution Approach 1:
The patent enables preliminary action by having the wireless device prepare and transmit failure information reports proactively. The network receives this information before subsequent failures occur, allowing it to pre-adjust parameters and configurations. This preliminary optimization reduces the likelihood of future failures and minimizes the need for repeated NAS recovery procedures, thereby maintaining service continuity while ensuring connection stability.
Data Source
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AI summary
A wireless device (12) transmits, to a network node, a non-access stratum, NAS, recovery report (20) that reports a cause (22) of the wireless device (12) performing a NAS recovery procedure for NAS recovery of an access stratum, AS, signaling connection (16). The network node, based on the NAS recovery report (20), may perform root cause analysis to determine a root cause of the wireless device (12) having to perform the NAS recovery procedure. Alternatively or additionally, the network node may, based on the NAS recovery report (20), perform one or more actions to address a root cause of the wireless device (12) having to perform the NAS recovery procedure.