DRX Parameter Configuration for ANR Measurement in Cellular Networks
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Solution Overview
Problem
Current Discontinuous Reception (DRX) parameter configurations in cellular networks are traffic-independent, leading to increased active duration and reduced sleep duration for UEs with high traffic intensity, which impede DRX-based Automatic Neighbor Relation (ANR) measurement procedures, causing connection dropping and service interruptions.
Innovation Solution
A method and base station configuration to dynamically set DRX parameters, such as DRX Cycle, On-Duration Timer, and DRX Inactivity Timer, based on the traffic intensity of User Equipment (UE), and adjust these parameters based on actual ANR measurement failure rates to optimize ANR measurement performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed DRX parameters are used for all UEs, then power saving is achieved for low traffic UEs, but ANR measurement fails for high traffic UEs due to insufficient sleep duration
Solution Approach 1:
The patent applies dynamics by making DRX parameters adjustable and adaptive rather than fixed. The base station dynamically configures DRX parameters based on UE traffic intensity, allowing the system to adapt to different traffic conditions. High traffic UEs receive configurations with longer sleep durations suitable for ANR measurement, while low traffic UEs maintain power-saving configurations.
Solution Approach 2:
The patent changes the DRX parameter values based on traffic intensity classification. Different parameter sets are applied: long DRX cycle with extended sleep duration for high traffic UEs needing ANR measurement, and short DRX cycle with shorter sleep duration for low traffic UEs prioritizing power saving. This parameter adaptation resolves the contradiction between measurement reliability and power efficiency.
2Reliability
If DRX Inactivity Timer is extended to capture high traffic, then ANR measurement opportunity increases, but active duration increases reducing power saving
Solution Approach 1:
The patent applies local quality by providing different DRX parameter configurations to different UE groups based on their specific needs. High traffic UEs receive extended DRX Inactivity Timer values to enable ANR measurement, while low traffic UEs receive standard or reduced values to maximize power saving. This localized parameter optimization resolves the contradiction between measurement opportunity and energy consumption.
3Ease of operation
If traffic-independent DRX parameters are used, then configuration simplicity is maintained, but connection dropping occurs for high traffic UEs during ANR measurement
Solution Approach 1:
The patent implements self-service by enabling the system to automatically classify UEs based on traffic intensity and select appropriate DRX parameter configurations without manual intervention. The base station monitors traffic patterns, identifies high traffic UEs needing ANR measurement, and automatically applies suitable parameter sets, maintaining operational simplicity while improving connection stability.
Data Source
AI summary
The present invention discloses a Discontinuous Reception (DRX) parameter configuration method for facilitating Automatic Neighbor Relation (ANR) measurement. The method comprises determining a traffic intensity of a User Equipment (UE) by which a DRX-based ANR measurement is to be performed. The method further comprises setting a value for a DRX parameter to be used by the UE to perform the DRX-based ANR measurement, in accordance with the determined traffic intensity of the UE. The method further comprises transmitting the value set for the DRX parameter to the UE. The present invention further provides an associated BS adapted to perform DRX parameter configuration to facilitate ANR measurement.