Optimization and Performance Analysis of High Speed Mobile Access Networks (Advanced Studies Mobile Research Center Bremen)

Design and development of a cost-effective mobile broadband wireless access network is a key challenge for many mobile network operators. Overdimensioning or underdimensioning of the access network results in additional costs and a reduction of the customer satisfaction, respectively.

Thushara Weerawardane introduces new transport technologies and features for High Speed Packet Access (HSPA) and Long-Term Evolution (LTE) networks. He proposes novel adaptive flow control and enhanced congestion control algorithms and develops corresponding analytical models. These models are based on Markov chains and can be performed for faster analysis evaluation compared to long lasting detailed simulations. Both simulation and analytical models provide optimum network performance and reliable guaranteed quality of standard for the end users during congestion in the transport network. Further, the author investigates and analyzes the LTE transport network performance by introducing novel traffic differentiation models and buffer management techniques during intra-LTE handovers.

Dr. Thushara Weerawardane completed his doctoral degree at the Communication Networks Group of TZI (Center for Communication and Information Technology), University of Bremen. He is a researcher at the Communication Networks Group, working in the field of design and development of broadband mobile network access networks.