Method for multiple small station access in satellite communication system

Abstract

The present invention provides a method for multiple small stations access method of a satellite communication system. The main station periodically inputs information such as a service table, a system state and the like which are needed by the system through a forward signaling broadcast small station; according to the number of synchronous idle time slots of a link, the system state is divided into three types that are an idle-free synchronous time slot state, an idle-enough synchronous time slot state and an idle-first synchronous time slot state; the small station divides the priority of the access system into a high priority and a common priority according to the service features; after receiving necessary access information such as the service table, the system state and the like, the small station compares the priority and the system state, and corresponding access operation is not adopted unless the system state allows access of the current small station; according to the present invention, conflict generated during the access of the system can be reduced effectively and the access speed can be improved.

Description

technical field [0001] The invention relates to a method for accessing multiple small stations in a satellite communication system, in particular to a method for connecting multiple small stations in a DVB-RCS system. Background technique [0002] Satellite communication is not restricted by geographical environment and distance. Its point-to-multipoint, point-to-ground coverage advantages and flexible mobility make satellite communication have obvious advantages in the field of communication, especially DVB- The RCS system highlights the superiority of satellite communication in the current satellite communication application. [0003] In the DVB-RCS system, the small station access system mainly refers to sending an access request within the access time slot provided by the broadcast message after the small station receives the broadcast message from the master station. In the DVB-RCS system, the access slots on a carrier are quite limited, and usually only limited access...

AI Technical Summary

Problems solved by technology

In the DVB-RCS system, the access slots on a carrier are quite limited, and usually only limited access slots are required to ensure the access of small stations that are much higher than the number of access slots. The way the small stations access the system is that the small stations do not know the current system status. After each small station preparing to access the system receives the broadcast message, all the small stations preparing to access the system are in the same access time slot. The access request is sent within the network, that is, multiple small stations compete for the same access slot at the same time, which obviously easily causes conflicts when the small stations access

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