RRC Mismatch Reporting in Wireless Networks
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Solution Overview
Problem
In wireless networks, RRC state mismatches between user equipment (UE) and the network can lead to issues such as the UE not responding to paging and the network not accepting scheduling requests, due to misalignment in RRC states, which are not reliably detected or corrected.
Innovation Solution
The UE logs and reports RRC mismatch occurrences, including timer settings and measurement data, to the network, allowing operators to detect and optimize network settings to prevent such mismatches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network does not implement RRC state monitoring and reporting mechanisms, then the system remains simple with fewer signaling messages, but RRC state mismatches cannot be reliably detected or corrected
Solution Approach 1:
The network pre-configures the UE with RRC state monitoring parameters and reporting thresholds before operation. The UE proactively monitors RRC state consistency and prepares mismatch reports in advance, enabling reliable detection without complex real-time negotiation mechanisms.
Solution Approach 2:
The UE continuously monitors RRC state consistency between itself and the network, and provides feedback reports when mismatches are detected. This closed-loop feedback mechanism enables reliable mismatch detection while keeping the signaling structure simple and standardized.
2Measurement precision
If the UE continuously monitors and reports all RRC state parameters, then complete mismatch detection is achieved, but signaling overhead and network traffic increase
Solution Approach 1:
Instead of reporting all RRC state parameters continuously, the solution extracts and reports only the specific parameters that indicate state mismatches. The UE monitors multiple parameters but selectively reports only those showing inconsistency, reducing signaling overhead while maintaining detection accuracy.
Solution Approach 2:
The UE performs comprehensive monitoring of all RRC parameters but reports only the partial set that shows mismatches. This partial reporting approach achieves complete mismatch detection without the excessive signaling overhead of continuous full-parameter reporting.
3Productivity
If RRC state mismatches are not detected and corrected, then the system operates with simpler procedures, but performance degradation occurs due to paging failures and scheduling request rejections
Solution Approach 1:
The UE autonomously detects RRC state mismatches and generates correction reports without requiring complex network intervention. The network simply processes these self-generated reports and applies corrections, maintaining operational simplicity while improving performance through automatic mismatch detection and correction.
Data Source
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AI summary
A method is provided including determining, at a user equipment, whether a control state mismatch occurred between the user equipment and a wireless network, the control state mismatch corresponding to an occasion where the user equipment is operating in a different control state than is expected by the wireless network; generating, at the user equipment, a report comprising information related to at least one occurrence of a control state mismatch; and transmitting, from the user equipment, the report to the wireless network.