Mobility Node Outage Reporting Through Cross-Node UE Impact Logs
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Solution Overview
Problem
In wireless networks, mobility node outages can cause missed incoming communications for user equipment (UE) due to inaccurate impact assessments, leading to inefficient resource allocation for remediation.
Innovation Solution
A system that determines the outage period and impact period for UEs attached to a mobility node, identifying UEs that experienced missed communications and those that recovered early by attaching to another node, allowing for a more accurate assessment of the aggregate impact and generating alerts for resource prioritization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless network pages the UE from multiple base stations in a large geographic region, then the UE can be found even after movement, but the paging complexity and resource consumption increase
Solution Approach 1:
The system segments the large geographic region into smaller regions, each served by a specific mobility node. When a UE moves, only the mobility node responsible for the new region is notified, rather than paging across the entire large region. This segmentation reduces the complexity of tracking and paging UEs while maintaining reliability.
Solution Approach 2:
The system performs preliminary registration where the UE proactively reports its location and attaches to a mobility node before any paging is needed. This preliminary action eliminates the need for complex reactive paging across multiple base stations, as the network already knows where to find the UE when incoming communications arrive.
2Reliability
If the mobility node expands the geographic area for paging when initial paging fails, then the UE can be located, but the time and resources required increase
Solution Approach 1:
The system performs preliminary location registration where the UE reports its location and attaches to a mobility node in advance. This eliminates the need for iterative geographic expansion of paging areas, as the network already has accurate location information ready when paging is needed.
Solution Approach 2:
The system implements feedback mechanisms where the UE continuously reports its location and attachment status to the mobility node. This real-time feedback allows the network to maintain accurate UE location information without requiring expanded paging searches, reducing both time and resource consumption.
3Measurement precision
If the network monitors all UEs attached to a mobility node during outage, then accurate impact assessment is achieved, but the processing complexity and resource usage increase
Solution Approach 1:
The system extracts and monitors only the critical subset of UEs that are actually impacted by the mobility node outage, rather than monitoring all attached UEs. By identifying and isolating only those UEs with active incoming communications during the outage, the system achieves accurate impact measurement with reduced processing complexity.
Solution Approach 2:
The system applies different monitoring levels to different UEs based on their actual communication status. UEs with active incoming communications receive detailed monitoring, while UEs without such communications receive minimal or no monitoring. This local differentiation achieves precise impact measurement without uniformly high processing costs.
Data Source
AI summary
Improved mobility node (e.g., MME/AMF) outage impact reporting is more accurate than prior approaches. Rather than assuming that all UEs, attached to a mobility node upon the onset of an outage, are affected, the new approach recognizes that UEs already in connected mode, or that do not receive any incoming communication (e.g., incoming calls), are not significantly impacted. Further, the time of the impact for a UE does not start until a communication is missed. And further, some UEs may automatically attach to a second mobility node, such as another node in the same pool or due to the UE moving to a new area under the responsibility of a functioning mobility node. A scheme is disclosed for searching logs of different network nodes to identify which UEs are actually impacted by an outage, when the impact began for each, and if any recovered early using another mobility node.