MDT Configuration Segmentation for Wireless Measurement
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Solution Overview
Problem
Current minimization of drive test (MDT) measurement processes in wireless communication networks face challenges such as incomplete data collection, fragmented measurement results, and inadequate support for split connectivity architectures, which hinder network operators' ability to assess quality and optimize network performance effectively.
Innovation Solution
The proposed solution involves breaking down MDT measurement configurations into multiple parts and correlating measurement results across different network elements, including the PDCP and RLC protocol layers, to provide comprehensive and accurate data, using techniques such as timestamp alignment and measurement result correlation, and employing methods to handle dual connectivity and quality of service (QoS) measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If MDT measurement configurations are collected from multiple network elements, then measurement completeness is improved, but data fragmentation increases
Solution Approach 1:
The patent segments the MDT measurement configuration into multiple parts, each distributed to different network elements (PDCP layer, RLC layer, etc.). Each network element independently processes and reports measurements based on its specific configuration part, enabling complete data collection across the network while maintaining manageable data structures at each node.
Solution Approach 2:
The patent introduces a correlation mechanism that acts as an intermediary to collect measurement results from multiple network elements and reconstruct the complete measurement picture. This intermediary function correlates timestamps and measurement data from different sources, resolving data fragmentation without requiring complex processing at each network element.
2Measurement precision
If measurement configurations are distributed across PDCP and RLC layers, then measurement accuracy is improved, but system complexity increases
Solution Approach 1:
The patent divides the measurement configuration processing across different protocol layers (PDCP and RLC), assigning specific measurement tasks to each layer based on its functional capabilities. This segmentation enables accurate measurements at each layer while keeping individual layer complexities manageable through clear functional separation.
Solution Approach 2:
The patent introduces a new dimension of measurement by utilizing multiple protocol layers simultaneously. Instead of single-layer measurement, the system performs measurements at different protocol dimensions (PDCP layer for higher-level metrics, RLC layer for lower-level metrics), then correlates results to achieve comprehensive accuracy without overwhelming any single layer.
3Measurement precision
If timestamp correlation is implemented across network elements, then data correlation accuracy is improved, but processing overhead increases
Solution Approach 1:
The patent implements preliminary timestamp tagging at the source network elements before measurement data transmission. Each network element embeds its local timestamp in the measurement report, enabling the correlation mechanism to perform simple time-difference calculations rather than complex synchronized processing, thus improving correlation accuracy while minimizing processing overhead.
Data Source
AI summary
Techniques are described to improve minimization of drive test (MDT) related measurements. For example, a wireless communication method is described for receiving, by a first device, a measurement configuration for minimization of drive test (MDT) related measurement, sending, by the first device to a third device, a measurement result based on a first measurement configuration, where the measurement result includes a time stamp and a type of measurement result. The wireless communication method also includes sending, by the first device to a second device, a second measurement configuration and the type of measurement result. The first measurement configuration, second measurement configuration, and the type of measurement result are based on the measurement configuration for MDT.