The doctoral dissertations of the former Helsinki University of Technology (TKK) and Aalto University Schools of Technology (CHEM, ELEC, ENG, SCI) published in electronic format are available in the electronic publications archive of Aalto University - Aaltodoc.
Aalto

Advanced Mobile Network Monitoring and Automated Optimization Methods

Albert Höglund

Dissertation for the degree of Doctor of Science in Technology to be presented with due permission of the Department of Engineering Physics and Mathematics for public examination and debate in Auditorium E at Helsinki University of Technology (Espoo, Finland) on the 23rd of March, 2006, at 12 o'clock noon.

Overview in PDF format (ISBN 951-22-8095-7)   [135 KB]
Dissertation is also available in print (ISBN 951-22-8079-5)

Abstract

The operation of mobile networks is a complex task with the networks serving a large amount of subscribers with both voice and data services, containing extensive sets of elements, generating extensive amounts of measurement data and being controlled by a large amount of parameters. The objective of this thesis was to ease the operation of mobile networks by introducing advanced monitoring and automated optimization methods. In the monitoring domain the thesis introduced visualization and anomaly detection methods that were applied to detect intrusions, mal-functioning network elements and cluster network elements to do parameter optimization on network-element-cluster level. A key component in the monitoring methods was the Self-Organizing Map. In the automated optimization domain several rule-based Wideband CDMA radio access parameter optimization methods were introduced. The methods tackled automated optimization in areas such as admission control, handover control and mobile base station cell size setting. The results from test usage of the monitoring methods indicated good performance and simulations indicated that the automated optimization methods enable significant improvements in mobile network performance. The presented methods constitute promising feature candidates for the mobile network management system.

This thesis consists of an overview and of the following 10 publications:

  1. Höglund A. J. and Hätönen K., 1998, Computer Network User Behaviour Visualisation Using Self Organising Maps, Proceedings of the 8th International Conference on Artificial Neural Networks (ICANN 1998), vol. 2, pp. 899-904. © 1998 IEEE. By permission.
  2. Höglund A. J., Hätönen K. and Sorvari A. S., 2000, A Computer Host-Based User Anomaly Detection System Using the Self-Organizing Map, Proceedings of the IEEE-INNS-ENNS International Joint Conference on Neural Networks (IJCNN 2000), vol. 5, pp. 411-416. © 2000 IEEE. By permission.
  3. Laiho J., Kylväjä M. and Höglund A., 2002, Utilization of Advanced Analysis Methods in UMTS Networks, Proceedings of the 55th IEEE Vehicular Technology Conference (VTC 2002 Spring), vol. 2, pp. 726-730. © 2002 IEEE. By permission.
  4. Höglund A., Pöllönen J., Valkealahti K. and Laiho J., 2003, Quality-based Auto-tuning of Cell Uplink Load Level Targets in WCDMA, Proceedings of the 57th IEEE Vehicular Technology Conference (VTC 2003 Spring), vol. 4, pp. 2847-2851. © 2003 IEEE. By permission.
  5. Höglund A. and Valkealahti K., 2002, Quality-based Tuning of Cell Downlink Load Target and Link Power Maxima in WCDMA, Proceedings of the 56th IEEE Vehicular Technology Conference (VTC 2002 Fall), vol. 4, pp. 2248-2252. © 2002 IEEE. By permission.
  6. Hämäläinen A., Valkealahti K., Höglund A. and Laakso J., 2002, Auto-tuning of Service-specific Requirement of Received EbNo in WCDMA, Proceedings of the 56th IEEE Vehicular Technology Conference (VTC 2002 Fall), vol. 4, pp. 2253-2257. © 2002 IEEE. By permission.
  7. Valkealahti K., Höglund A., Parkkinen J. and Flanagan A., 2002, WCDMA Common Pilot Power Control with Cost Function Minimization, Proceedings of the 56th IEEE Vehicular Technology Conference (VTC 2002 Fall), vol. 4, pp. 2244-2247. © 2002 IEEE. By permission.
  8. Valkealahti K., Höglund A., Parkkinen J. and Hämäläinen A., 2002, WCDMA Common Pilot Power Control for Load and Coverage Balancing, Proceedings of the 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2002), vol. 3, pp. 1412-1416. © 2002 IEEE. By permission.
  9. Valkealahti K., Höglund A. and Novosad T., 2003, UMTS Radio Network Multiparameter Control, Proceedings of the 14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2003), vol. 1, pp. 616-621. © 2003 IEEE. By permission.
  10. Höglund A. and Valkealahti K., 2005, Automated Optimization of Key WCDMA Parameters, Wireless Communications and Mobile Computing, vol. 5, issue 3, pp. 257-271, DOI 10.1002/wcm.212. © 2005 John Wiley & Sons. By permission.

Keywords: monitoring, visualization, Self-Organizing Map, anomaly detection, novelty detection, intrusion detection, clustering, mobile network, WCDMA, radio resource management, optimization, auto-tuning, network management

This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.

© 2006 Helsinki University of Technology

Last update 2011-05-26