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PhD defence by Ali Karimidehkordi


13.02.2020 kl. 12.30 - 16.00


“Multi-Service Radio Resource Management for 5G Networks”

The fifth generation of wireless networks (5G) supports different traffic classes with heterogeneous key performance indicators (KPIs). Optimizing these KPIs is one of the main challenges involved in designing 5G networks. This PhD thesis proposes downlink radio resource management solutions for 5G networks with the capability to efficiently support different service classes and their diverse requirements.

First, we focus on inter-cell interference mitigation. A new interference subspace coordination scheme is introduced. Distributed co-scheduling of ultra-reliable low-latency communications (URLLC) and enhanced mobile broadband (eMBB) is studied as the second step. To reduce the URLLC latency and enhance eMBB throughput, a novel service-based packet scheduling policy is proposed. In the third part, we research on centralized radio access network (C-RAN) architecture with multi-cell scheduling algorithms to enhance URLLC performance. Theoretical studies of the URLLC are conducted in the fourth step.

Different multiplexing schemes are explored for the transmission of data and control channel. Joint link adaptation of data and control information is investigated, and solutions based on successive convex optimization are proposed. Finally, the application of packet duplication is studied for URLLC as a reliability enhancement solution, and recommendations on the use of this technique are provided.

Assessment Committee
Professor, Riku Jäntti, Aalto University, Finland
Dr., Honglei Miao, INTEL, Germany
Associate Professor, Carles N. Manchon, Aalborg University (Chairman)

Professor, Preben E. Mogensen, Aalborg University, (main supervisor)
Professor, Klaus I. Pedersen, Aalborg University

Associate Professor, Troels Pedersen, Aalborg University

After the defence there will be a reception at Fredrik Bajers 7, room A1-112
Please feel welcome to join


Free of charge


Wireless Communication Networks Section, Department of Electronic Systems


Aalborg University, Fredrik Bajers Vej 7 room A4-108