A terminal autonomous multi-beam switching method for geo satellite mobile communication system

Abstract

The invention discloses a multi-beam switching method for a terminal autonomous GEO satellite mobile communication system, and mainly relates to the cross-beam switching technology in the field of satellite mobile communication. In this method, dual-channel devices are set in the mobile terminal, and through reasonable software control, the dual-channel devices reside in different beams in the beam overlapping area, and the communication data is wirelessly transmitted between the two channels when crossing beams. Slot switching transmission realizes communication continuity and integrity of data transmission when high-speed mobile users frequently cross beams. The present invention adopts the design of terminal dual-channel and autonomously switching transmission channels. Compared with the existing cross-beam switching method, it has the characteristics of not requiring system switching control, flexible and autonomous use by users, uninterrupted communication, and user-insensitive beam switching. It is especially suitable for occasions where mobile users can move freely and maintain communication continuity in a GEO multi-beam satellite system.

Description

technical field [0001] The invention belongs to the field of satellite communication, and relates to a multi-beam switching method of a terminal-autonomous GEO satellite mobile communication system. The method can realize dual-channel sub-beam dwelling in the beam overlapping area and seamless switching between service data channels. The terminal autonomous and system-insensitive cross-beam switching is especially suitable for terminal cross-beam switching applications in satellite communication systems. Background technique [0002] In GEO (Geosynchronous Orbit) multi-beam satellite systems, highly dynamic mobile users (airborne, missiles, near-space platforms, etc.) are increasing. Due to the very fast movement speed, high-speed mobile users will frequently switch across beams during the movement process, so effective beam switching technology must be used to ensure the continuity of communication during the free movement of users. At present, most beam switching technolo...

AI Technical Summary

Problems solved by technology

At present, most beam switching technologies require the system to perform complex mobility management, and the gateway station initiates route optimization and beam switching management to change channels and assist users to complete beam switching, which brings high cross-beam complexity and signaling interaction. Frequent problems, poor adaptability to some occasions that require the terminal to switch beams autonomously

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