Open AccessMethod of scheduling channel resources for onboard SpaceWire networks with TDMA
Author(s) -
Ilya Korobkov
Publication year - 2019
Publication title -
radiopromyšlennostʹ
Language(s) - English
Resource type - Journals
eISSN - 2541-870X
pISSN - 2413-9599
DOI - 10.21778/2413-9599-2019-29-4-44-53
Subject(s) - time division multiple access , computer science , scheduling (production processes) , computer network , channel (broadcasting) , schedule , control channel , dynamic priority scheduling , distributed computing , real time computing , engineering , quality of service , telecommunications link , operations management , operating system
The article presents a new method for scheduling channel resources in SpaceWire onboard networks with support for TDMA technology. The network features based on the SpaceWire network standard and the STP-ISS transport protocol, which provides TDMA technology in the form of the «Scheduling» mechanism, were considered. This mechanism is used in networks with the goal of providing determinism, resolving conflicts and blocks when two or more devices are simultaneously trying to transmit data, occupying a limited channel resource. A comparative analysis of existing methods and algorithms for scheduling channel resources to design a schedule table was conducted. A new method of scheduling channel resources in SpaceWire onboard networks was presented and substantiated. A performance evaluation was carried out using the parameters significant for the space industry. It demonstrates the effectiveness of the developed method.