Mobility Enhancement Based On Dual-Connectivity In 5G Ultra Dense Network

The future wireless network will have to meet the demand for an explosive increase in video services with high throughput 3D video data,virtual reality(VR),social networking,e-banking,interactive games and advance IoT(Internet of Things).With the increasing of small cells and electronics equipment,we will be confronted with more interference who will cause more radio link and handover failure.Network densification shrinks the footprint of base stations(BSs)and reduces the number of users associated with each base station,leading to an improved spatial frequency reuse and spectral efficiency,and thus,higher network capacity,reduce end-to-end latency,and lower energy consumption.Given the significant increase in the global population in connectivity,sharing,and speed,UDN(ultra-dense network)will play an important role in increasing the demand for high throughput data.In my thesis,we analyze the architecture of dual connectivity base on local anchor.Analyze a tractable mobility aware model for a two-tier downlink cellular network using the stochastic geometry with ultra dense small cells and C-plane/U-plane split dual connectivity architecture.The developed model is then used to quantify the effect of mobility on the foreseen densification gain with and without dual-connection architecture.Numerical results demonstrate mobility performance gains of dual-connectivity.