Overview of Cell Handover Technique in High Altitude Platform Communication System
The quasi-stationary state of high-altitude platform caused by strong winds in the stratosphere has severe impact on the performance of the communication system, and puts forward higher requirements for the handover technique.This paper analyzes the handover problem of the high altitude platform communication system.In two research directions of switching decision algorithm and access control strategy, the paper discusses current studies on the quasi-static high-altitude platform communication system handover technology in detail.As to handoff algorithm, the paper concludes the characteristics and deficiencies of conventional algorithm and intelligent handoff algorithm.With regard to access control strategy, the paper analyzes the adaptability of the existing algorithm to the quasi-stationary state of the platform.In the end, the paper forecasts the development direction of high-altitude platform communication system handover technology.
high altitude platformquasi-stationary stateswitchingcall access control
NETL
NSTL
万方数据
维普
