Radio Link Failure Reporting with Power Saving Level Indicator
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Solution Overview
Problem
The effectiveness of radio link failure (RLF) information for assessing network performance is influenced by the configuration of communication devices, particularly in discontinuous reception (DRX) mode, where existing methods fail to accurately detect RLFs and manage signaling load effectively.
Innovation Solution
Incorporating information about the power saving state of communication devices, such as DRX cycle length and power saving mode, into RLF reports, and using a power saving level indicator to determine whether to log or exclude RLF reports, thereby optimizing network performance assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If RLF reports are collected from all communication devices regardless of their power saving state, then the quantity of RLF information for network assessment increases, but the accuracy of network performance assessment deteriorates due to inclusion of unreliable RLF detections from high DRX cycle devices
Solution Approach 1:
The patent applies parameter changes by introducing a power saving level indicator (PSLI) that quantifies the DRX cycle length, and using this parameter to filter RLF reports. Devices with PSLI above a threshold are excluded from RLF reporting, thereby changing the composition of collected data to improve assessment accuracy while maintaining reasonable report quantity.
2Reliability
If RLF detection is performed continuously with short DRX cycles, then the reliability of RLF detection improves, but the use of energy by the communication device increases
Solution Approach 1:
The patent applies dynamics by allowing communication devices to dynamically adjust their DRX cycle length based on their power saving requirements and data traffic patterns. The network accepts RLF reports only from devices operating below a configured power saving threshold, thereby accommodating dynamic power management while maintaining detection reliability for actively monitored devices.
3Object-generated harmful factors
If RLF reports are suppressed from devices in high power saving mode, then the signaling load on the network is reduced, but the quantity of RLF information available for network assessment decreases
Solution Approach 1:
The patent applies local quality by differentiating the RLF reporting behavior based on the specific power saving state of each communication device. Instead of a blanket suppression policy, the network configures a power saving level indicator threshold that selectively enables or disables RLF reporting for individual devices based on their operational mode, thereby optimizing the balance between signaling load and information availability.
Data Source
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AI summary
A technique, comprising: including in a radio link failure report from a communication device information about the power saving state of the communication device.