ARTIFICIAL SATELLITE MOUNT DATA BUS CONTROL METHOD, AND ITS SYSTEM

Japanese Patent JP3450248

B2

PROBLEM TO BE SOLVED: To provide an artificial satellite mount data bus system that has a transmission reception function for a variable length aperiodic packet in addition to a conventional periodic fixed length telemetry collection function.
SOLUTION: A periodic pressing time zone for which a plurality of communication terminals and a data bus controller make periodic communication and an aperiodic processing time zone for which a plurality of the communication terminals and the data bus controller make aperiodic communication, are independently arranged, and a communication terminal makes communication with priority for each aperiodic processing time zone is decided in advance. Communication requests of the communication terminal making communication with priority for the aperiodic processing time zone are collected (polling). Upon the receipt of a communication request from the communication terminal, the transmission for the communication is permitted when a transmission data amount averaged by times for transmission of a plurality of packets is less than an assigned permissible band, and the communication terminal is permitted to send one variable length packet for the aperiodic processing time zone. When the transmission data amount averaged by times for transmission of a plurality of packets is the assigned permissible band or over, the transmission is restricted.

Hiroaki Miyoshi

JP2000010771A

September 22, 2003

January 19, 2000

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NEC Toshiba Space Systems Co., Ltd.

H04L12/403; H04B7/185; H04L12/40; (IPC1-7): H04L12/403; H04L12/40

JP9130383A
JP9238155A
JP344234A
JP690240A
JP927989A
JP244435U

Katsumi Udaka

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