Immediate MDT QoS Measurement for Capacity Optimization
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Solution Overview
Problem
Current Minimization of Drive Tests (MDT) specifications in mobile communication systems are not suitable for communication capacity optimization, making it difficult to identify zones with low capacity despite favorable radio states.
Innovation Solution
A mobile communication method and user terminal that perform Quality of Service (QoS) parameter measurements using an Immediate MDT scheme, transmitting reports including location information periodically or upon event triggers, measuring parameters at a layer higher than the physical layer for each QCI, to support capacity optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If physical layer radio state measurement is performed using current MDT specifications, then coverage optimization is achieved, but capacity optimization is not possible
Solution Approach 1:
The patent changes the measurement parameter from physical layer radio state (signal strength, quality) to higher layer QoS parameters (throughput, latency, packet loss). This parameter transformation enables the system to measure capacity-related metrics that were previously unmeasurable through conventional MDT, thereby achieving capacity optimization while maintaining measurement accuracy.
Solution Approach 2:
The patent transitions from measuring only physical layer parameters to measuring QoS parameters at higher protocol layers (application layer). This dimensional expansion adds new measurement capabilities that reveal capacity information, allowing the system to identify low-capacity zones that are not detectable through physical layer measurements alone.
2Adaptability or versatility
If QoS parameter measurement is implemented, then capacity optimization is enabled, but measurement complexity increases
Solution Approach 1:
The patent makes the user terminal perform multiple functions: it measures both QoS parameters for capacity optimization and maintains compatibility with existing coverage optimization MDT measurements. The terminal acts as a universal measurement device that serves dual purposes, reducing the need for separate dedicated measurement systems and thereby managing complexity through multi-functionality.
Solution Approach 2:
The patent leverages the user terminal's existing communication capabilities and processing functions to perform QoS measurements. Rather than requiring complex external measurement equipment, the terminal uses its own resources (network interface, processor, memory) to measure QoS parameters, thereby simplifying the overall measurement system architecture.
3Speed
If immediate reporting of measurement data is performed, then real-time capacity identification is achieved, but network load increases
Solution Approach 1:
The patent implements periodic reporting of QoS measurement data instead of continuous immediate reporting. The terminal reports measurement results at predetermined intervals or when specific conditions are met, which reduces the frequency of network processing while still enabling timely capacity identification. This periodic action balances real-time requirements with network load management.
Solution Approach 2:
The patent establishes a feedback mechanism where the network receives QoS measurement data from the terminal and can adjust network parameters accordingly. This feedback loop enables the system to identify capacity issues and respond appropriately, while the feedback mechanism itself can be configured to trigger reports only when necessary, managing network load through intelligent feedback timing.
Data Source
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AI summary
A mobile communication method in a mobile communication system supporting the Minimization of Drive Tests (MDT) comprises a step in which an Immediate MDT scheme is used to perform the MDT to measure Quality of Service (QoS) parameters in the communication between a user terminal and a network that communicates with the user terminal.