Handoff Mechanism Considering Growth Benefit for LEO Satellite and Terrestrial Hybrid Network

Within the 5G framework, the hybrid of satellite system and terrestrial system is promoted, forming a new hybrid network architecture. Handoff of heterogeneous network is becoming more important as a key to achieve the interconnection of satellite and terrestrial network and support the seamless handoff of different access modes. This paper summarizes the development prospects of satellite - terrestrial network, and reviews the typical heterogeneous network handoff algorithms. In addition, this paper also presents a hybrid network architecture in which the satellite and terrestrial are hybrid. Based on the architecture, a vertical handoff algorithm is adopted on particular scene.