Supervisors info:
Λάζαρος Μεράκος, Καθηγητής, Τμήμα Πληροφορικής και Τηλεπικοινωνιών, ΕΚΠΑ
Summary:
The expected explosive increase in demand for wireless broadband services in combination with the Internet of Things (IoT) society, necessitates the development of a new network generation to meet the ever-emerging user needs. The 5th generation (5G) networks vision places under the spotlight three basic requirements that have to be met: the maximum possible throughput, the minimum possible latency and the support of massive device connectivity. Standardization, network architecture and network technologies play an important role in satisfying the aforementioned requirements. However, it is essential to identify the weaknesses of the previous generation systems and cope with them by proceeding with all the necessary improvements. The problem of unused network resources has been detected by the scientific community and there are already some proposals for tackling it.
As part of this thesis, an extensive review of the 5th generation mobile communications systems (5G) is carried out, while the issue of the efficient network resources allocation follows along with a new protocol proposal for its addressing. More specifically, the motivation for the 5G systems development, the standardization timeline and the requirements posed are first studied. Moreover, some possible architecture scenarios and the technologies that aim to be used in order to support them are examined as well. At the end of this review, we proceed with presenting the projects funded by the European Union for research in the 5G development filed. Subsequently, the problem of unused radio resources is set in the spotlight and the need for radio resource sharing between different network operators is pointed out. Having presented some relevant studies, we analyze the “Radio Resource Sharing with Network-Centric Approach” protocol, which sets the technical base and the idea of the new protocol that we introduce through this thesis. More specifically, an alternative approach regarding the aforementioned protocol is the “Radio Resource Sharing with Device-Centric Approach”. After an extensive presentation of the new proposed protocol, a comparative analysis between Network-Centric and Device-Centric approaches takes place. Then, the radio resource sharing aspects that need further investigation and scientific research in the future are recognized. We end up with a network simulation based on the prosed protocol usage and proceed with a result analysis
Keywords:
5G Communication Systems, Radio Resource Sharing, Software Defined Networking (SDN), Network-centric approach, Device-centric approach, Network Simulation
