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Enhanced MDT-Based Performance Estimation for AI Driven Optimization in Future Cellular Networks
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DOI：10.1109/ACCESS.2020.3021030.png)
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摘要
En 中文
Minimization of drive test (MDT) allows coverage estimation at a base station by leveraging measurement reports gathered at the user equipment (UE) without the need for drive tests. Therefore, MDT is a key enabling feature for data and artificial intelligence driven autonomous operation and optimization in future cellular networks. However, to date, the utility of MDT feature remains thwarted by issues such as sparsity of user reports and user positioning inaccuracy. We characterize three key types of errors in MDT-based coverage estimation that stem from inaccurate user positioning, scarcity of user reports and quantization. For the first time, the presented analysis shows existence of joint interplay between these errors on coverage estimation that result from inter-dependency between positioning error and bin width. The analysis also shows that there exists an optimal bin width for given user positioning inaccuracy and user density that minimizes the overall error in MDT-based estimated coverage. Utility of our framework is presented by addressing two applications from network optimization perspective: determining optimal bin width to maximize accuracy of MDT-based coverage estimation and its calibration to further improve its accuracy.
Keyword:
Estimation
Quantization (signal)
Global Positioning System
Base stations
Artificial intelligence
Optimization
Uncertainty
Minimization of drive test
autonomous coverage estimation
optimal bin width
sparse data
coverage calibration
data driven optimization
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期刊
IF:
3.6
论文数:
9.8W
被引数:
29.4W
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