My task was to analyze the application possibilities of SDN (Sotware Defined Neworking) paradigms in 4G LTE/EPC (Long Term Evolution/Envolved Packet Core) architectures in the INET/OMNeT++ simulation environment. SDN based networks provide huge flexibility for the mobile network operators. This level of flexibility makes easier and more efficient to administrate those networks.
OpenFlow is the base protocol of SDN network. The essential for the operation of OpenFlow protocol and the LTE network stack have already been implemented in the INET framework. Both of these implementation miss IPv6 support. I implemented IPv6 on these projects as first step. After that I have created some scenarios to measure the impact of the SDN paradigsm in LTE networks.
In the first part of my thesis I briefly introduce the specialties of the SDN networks and the architecture of LTE networks, after that I analyze the impact of the application of SDN paradigms in LTE networks. The OMNET++ environment provides the opportunity to take measurements which can be used to prove the advantages of the application of SDN.