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Second International Workshop on Real-Time Computing Systems and Applications (RTCSA'95)
A bandwidth reallocation scheme for Ethernet-based real-time communication
Tokyo, Japan
October 25-October 27
ISBN: 0-8186-7106-8
Junghoon Lee, Dept. of Comput. Eng., Seoul Nat. Univ., South Korea
Heonshik Shin, Dept. of Comput. Eng., Seoul Nat. Univ., South Korea
The objective of this paper is to develop a bandwidth reallocation scheme for TDMA-implemented Ethernet. The reallocation protocol consists of reporting change, calculating a new schedule, and reliably broadcasting the schedule. We also address the problem of static assignment of allocation vector, validate the essentiality of reallocation scheme, and design the scheme according to its functional requirements. The proposed scheme changes bandwidth allocation during the run-time operation of network system without affecting other traffics, so it can overcome the problem of static allocation. It completes reallocation within a bounded time as long as there are no transmission errors. Using this approach, the network is allowed to adapt to distributed real-time systems where traffic characteristics change dynamically.
Index Terms:
local area networks; real-time systems; frequency allocation; time division multiple access; real-time communication; bandwidth reallocation; Ethernet-based; Ethernet; reallocation protocol; distributed real-time systems
Citation:
Junghoon Lee, Heonshik Shin, "A bandwidth reallocation scheme for Ethernet-based real-time communication," rtcsa, pp.28, Second International Workshop on Real-Time Computing Systems and Applications (RTCSA'95), 1995
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