Minimization of Drive Tests UE Status Reporting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current minimization of drive tests (MDT) in mobile communication systems consume significant resources and memory, and can disrupt user equipment (UE) functionality, as UEs are often required to perform measurements without consideration for their battery or memory status, leading to unnecessary battery consumption and memory usage.
Innovation Solution
A method and apparatus where UE devices can transmit status indications, including battery and memory levels, to the base station, allowing the base station to determine whether to select the UE for MDT measurements based on predetermined thresholds, enabling the UE to reject or modify MDT commands to conserve resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE performs MDT measurements, then network coverage optimization is improved, but UE battery consumption and memory usage increase
Solution Approach 1:
The UE reports its status (battery level, memory level) to the base station before MDT measurements are assigned. This preliminary status reporting allows the base station to make informed decisions about UE selection, avoiding assignment of MDT tasks to UEs that would be overwhelmed by resource constraints.
Solution Approach 2:
The system establishes a feedback mechanism where UEs continuously report their status (battery level, memory level) to the base station. The base station uses this feedback information to dynamically adjust UE selection for MDT measurements, ensuring that only UEs with sufficient resources are selected, thereby preventing excessive battery consumption.
2Reliability
If UE performs MDT measurements, then network coverage optimization is improved, but UE memory consumption increases
Solution Approach 1:
The UE reports its memory level to the base station before MDT measurements are assigned. This preliminary action allows the base station to assess whether the UE has sufficient memory capacity to handle the MDT measurement tasks without risking memory overflow or system instability.
Solution Approach 2:
The system implements feedback where UEs periodically report their memory status to the base station. The base station uses this feedback to make informed decisions about UE selection for MDT measurements, ensuring that only UEs with adequate memory resources are selected, thereby preventing excessive memory consumption.
3Adaptability or versatility
If UE reports status continuously, then base station can make informed selection decisions, but network signaling overhead increases
Solution Approach 1:
Instead of continuous status reporting, the system implements periodic status reporting where UEs report their status at predetermined intervals or when status changes occur. This periodic action reduces the signaling overhead while still providing the base station with timely information for informed UE selection decisions.
Solution Approach 2:
The UE autonomously determines when to report its status based on predefined conditions (e.g., when battery level or memory level crosses certain thresholds). This self-service approach eliminates the need for constant network-initiated status requests, reducing signaling overhead while maintaining adaptability for base station selection.
Data Source
AI summary
A method and corresponding apparatus for performing minimization of drive tests (MDT) in a mobile communication system are provided. The method may include receiving, by a base station, a control message from a user equipment (UE). The control message may be one of a MDT prohibit indication configured to indicate the base station should not select the UE for performing MDT, a UE status indication including at least one first UE parameter to be used by the base station when selecting MDT UEs, and a MDT measurement rejection when at least one second UE parameter differs from a predetermined UE parameter threshold.