Idle Mode Wireless Device Cross-Network Performance Degradation Reporting
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Solution Overview
Problem
Current telecommunications systems face challenges in reporting performance degradation in real-time, especially when wireless devices are in idle mode, as they can only report issues within the same Radio Access Technology (RAT) and Public Land Mobile Network (PLMN), limiting the ability to detect and address problems across different networks.
Innovation Solution
A method and system that enables wireless devices in idle mode to detect and report performance degradation to a second radio access network node operating with different RAT and/or PLMN, using mechanisms like radio resource control signaling and minimization of drive tests, allowing for real-time reporting across different network technologies and domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If wireless devices in idle mode log performance degradation events and report them during next connection, then reporting can be made without real-time constraints, but the reporting is delayed and not real-time
Solution Approach 1:
The system performs preliminary actions by configuring the wireless device with reporting configuration information and event configuration information before the device needs to report performance degradation. This allows the device to immediately report events when they occur without delay, as the configuration is already in place. The network node pre-configures the device with parameters such as reporting thresholds, event types to monitor, and target cell identifiers, enabling instant reporting capability.
2Adaptability or versatility
If wireless devices report performance degradation only within the same RAT and PLMN, then reporting is simplified and constrained to a single network domain, but the system cannot detect performance degradation across different network technologies
Solution Approach 1:
The system implements universality by enabling wireless devices to report performance degradation events across multiple Radio Access Technologies (RATs) and Public Land Mobile Networks (PLMNs). The reporting mechanism is designed to be technology-agnostic, allowing a device to detect an event on one RAT (e.g., LTE) and report it to a target cell on a different RAT (e.g., 5G NR) or different PLMN. The configuration information includes target cell identifiers that can correspond to cells operating on different frequencies and technologies, making the reporting system universally applicable across heterogeneous networks.
Solution Approach 2:
The network node acts as an intermediary by providing reporting configuration information that bridges the device's detection capability with the target network node. The configuration information serves as a mediator that contains target cell identifiers and reporting parameters, enabling the device to report to a different RAT/PLMN without the device itself needing to understand or manage the complexity of cross-technology communication protocols.
3Reliability
If wireless devices continuously monitor and report performance degradation in real-time, then detection capability is maximized, but energy consumption increases significantly
Solution Approach 1:
The system applies local quality by configuring the wireless device to monitor only specific signal quality parameters (such as RSRP, RSRQ, SINR) against defined thresholds rather than continuously analyzing all possible performance metrics. The event configuration information specifies particular conditions (e.g., signal quality below threshold for a certain duration) that trigger reporting, allowing the device to enter low-power states when conditions are normal and only activate full monitoring when degradation is detected.
Data Source
AI summary
There is provided mechanisms for reporting performance degradation in a communications system. The method is performed by a wireless device in idle mode. The method comprises detecting occurrence of performance degradation with a first radio access network node. The method comprises reporting the performance degradation as an event to a second radio access network node. The first radio access network node and the second radio access network node operate using mutually different radio access technologies and/or serve mutually different public land mobile networks.