Dynamic bandwidth allocation for real-time VBR video traffic in ATM networks
نویسندگان
چکیده
In this papel; we study the problem of dynamic bandwidth allocation for an ATM multiplexer loaded with real-time VBR video trafJic. The proposed mechanism adjusts the allocated bandwidth at regular intervals based on measured QoS. Instead of actual measurement of small cell loss ratios, we combine virtual output buffer method with a regression method to shorten the time interval required for estimating the required bandwidth to support the specified QoS by prediction. Using numerical examples, we show that our proposed dynamic bandwidth allocation scheme is more efficient than the optimum static bandwidth allocation scheme. Our measurement-based scheme offers several advantages: 1 ) it dependence on accurate trafSic parameters by users; 2 ) it can be applied to a wide va sources; 3) it adapts quickly to the variations of trafic with small measurement intervals; and 4) the complexity of the algorithm is small.
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