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Issue No.12 - December (1995 vol.44)
pp: 1420-1428
<p><it>Abstract</it>—The fiber distributed data interface (FDDI) is suitable for real-time communication because of the high speed and the performance guarantees it provides. However, these guarantees are achieved at the expense of non-real-time traffic because the real-time messages are given higher priority over non-real-time messages, resulting in excessive delays for non-real-time messages. In this paper, we propose a scheme for reducing the response time of non-real-time messages while still providing the same guarantees to real-time messages. In particular, the proposed approach gives higher priority to real-time messages only when it is absolutely necessary in order for them to meet their deadlines. Non-real-time messages are thus transmitted ahead of real-time messages whenever possible. We present an algorithm for determining when and by how much the transmission of a real-time message can be deferred without jeopardizing its deadline. The proposed approach is evaluated through simulation. The simulation results show that a substantial reduction in the mean response time of non-real-time messages is achieved when using the proposed approach.</p>
Real-time communication, non-real-time communication, timed token protocol, FDDI.
Parameswaran Ramanathan, Moncef Hamdaoui, "Deferring Real-Time Traffic for Improved Non-Real-Time Communication in FDDI Networks", IEEE Transactions on Computers, vol.44, no. 12, pp. 1420-1428, December 1995, doi:10.1109/12.477247
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