Samer M. Optimization of backbone networks and their workload in the next generation mobile communication systems.

The thesis is devoted to the study of the backbone networks optimization of next generation mobile communication systems in conditions of rapid demand increasing for wireless communication services as traditional character, as that require transmission of large data amounts at high speeds, by improving the spatial structure of the backbone transport network of base stations, so methods of information workload configuring for more efficient use of fixed infrastructural hardware resources, so calls' serving processes for mobile communication system high performance by the workload served. The method of analysis and planning of backbone network structure for mobile communication systems within a given territory, based on approaches of hierarchical decomposition of the optimization problem for the transport network by functional sublevels and topological optimization of its connecting lines was developed, which allowed to make calculations and design of transmission network subsystems, considering the increasing capacity of the network equipment used for reducing total cost of their construction. The mathematical model and algorithm of connections serving in the backbone network of mobile communication system were proposed, which avoid prior resource reservation into channel capacity of backbone, and which allows optimizing their use while waiting for a connection. According to the simulation results that were confirmed experimentally, there is increasing performance of next generation mobile communications occurred by served subscribers' workload.