MDT Measurement Handling with eICIC Indication and GNSS Power Control
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Solution Overview
Problem
Current Minimization of Drive Test (MDT) technologies in mobile communication systems face challenges in accurately optimizing cell service areas due to the lack of indication whether Minimization of Drive Test measurement information is affected by enhanced Inter-Cell Interference Coordination (eICIC) technology, and they also consume excessive power when using Global Navigation Satellite System (GNSS) receivers.
Innovation Solution
A method and apparatus that include setting MDT on User Equipment (UE) and determining if enhanced Inter-Cell Interference Coordination (eICIC) technology is active, reporting indication information alongside MDT measurements, and stopping GNSS receiver operations in power-saving mode to manage power effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If MDT measurement information is collected without indicating eICIC impact, then the measurement process is simple, but the optimization accuracy of cell service areas deteriorates
Solution Approach 1:
The patent introduces an indication information field as an intermediary element that bridges the simple MDT measurement process and the accurate optimization requirement. This indicator acts as a mediator that conveys eICIC impact status without fundamentally changing the measurement collection mechanism, thus maintaining process simplicity while enabling accurate optimization through the additional contextual information.
Solution Approach 2:
The MDT measurement information is segmented into multiple components: the original measurement data and the separate indication information about eICIC impact. This segmentation allows the measurement system to remain simple while the indication component provides the necessary detail for accurate optimization, resolving the contradiction between simplicity and precision.
2Measurement precision
If GNSS receiver operates continuously for MDT measurements, then location accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic operation of the GNSS receiver instead of continuous operation. The receiver is activated at specific intervals or under specific conditions to collect location information for MDT measurements, then enters sleep mode. This periodic action maintains sufficient location measurement accuracy for network optimization while dramatically reducing power consumption compared to continuous operation.
Solution Approach 2:
The operating parameters of the GNSS receiver are changed from continuous operation mode to periodic or event-triggered operation mode. By adjusting the operational parameters (activation timing, duration, frequency) of the GNSS receiver, the system achieves an optimal balance between location measurement precision and power consumption for the mobile UE.
Data Source
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AI summary
The present invention relates to a method and an apparatus for performing operations of a server to effectively use a minimization of drive test (MDT) technology in a mobile communication system wherein an enhanced inter-cell interference coordination, eICIC, technique was configured.