Title :
Self-optimization of Antenna Tilt and Pilot Power for dedicated channels
Author :
Islam, Muhammad Naseer Ul ; Abou-Jaoude, Roger ; Hartmann, Christian ; Mitschele-Thiel, Andreas
Author_Institution :
Tech. Universtat, Ilmenau, Germany
fDate :
May 31 2010-June 4 2010
Abstract :
In Radio Access Networks (RAN), fixed configurations result in poor network efficiency. This suboptimal performance is a direct result of user mobility and traffic patterns which changes over time and space. In this paper, we present a framework for a self-optimizing RAN, which adapts Antenna Tilt and Pilot Power according to the current load in the system. The framework uses distributed optimization and network performance-based optimization triggers. Additionally, we introduce the concept of Coupling Matrix, to avoid the traditional global network optimization. For realistic evaluations, we simulated our framework using a moving hot-spot user traffic model. This enables our framework to work under non-uniform traffic distribution with dedicated channels in a WCDMA network. The simulation results show significant performance gains, while ensuring the scalability and reduced complexity of the optimization problem.
Keywords :
Adaptive arrays; Base stations; Frequency; Loaded antennas; Performance gain; Quality of service; Radio access networks; Scalability; Telecommunication traffic; Traffic control; Antenna Tilt; Coupling Matrix; Pilot Power; Self-optimization; Tabu Search;
Conference_Titel :
Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks (WiOpt), 2010 Proceedings of the 8th International Symposium on
Conference_Location :
Avignon, France
Print_ISBN :
978-1-4244-7523-0