제어로봇시스템학회:학술대회논문집
- 2004.08a
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- Pages.350-353
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- 2004
Development of a Real-time Communication Service over Random Medium Access Scheme Networks
- Choo, Young-Yeol (Department of Computer Engineering, Dongmyong Univ. of Information Technology) ;
- Kwon, Jang-Woo (Department of Computer Engineering, Dongmyong Univ. of Information Technology)
- Published : 2004.08.25
Abstract
The increasing use of Ethernet-TCP/IP network in industry has led to the growing interest in its reliability in real-time applications such as automated manufacturing systems and process control systems. However, stochastic behavior of its medium access scheme makes it inadequate for time-critical applications. In order to guarantee hard real-time communication service in Ethernet-TCP/IP network, we proposed an algorithm running over TCP/IP protocol stack without modification of protocols. In this paper, we consider communication services guaranteeing deadlines of periodic real-time messages over MAC protocols that have unbounded medium access time. We propose a centralized token scheduling scheme for multiple access networks. The token is used to allow a station to transmit its message during the time amount that is appended to the token. The real-time performance of the proposed algorithm has been described.