DocumentCode :
3322675
Title :
Designing traffic profiles for bursty Internet traffic
Author :
Yang, Xiaowei
Author_Institution :
Lab. for Comput. Sci., MIT, Cambridge, MA, USA
Volume :
3
fYear :
2002
fDate :
17-21 Nov. 2002
Firstpage :
2149
Abstract :
The paper proposes a new class of traffic profiles that is better suited for metering bursty Internet traffic streams than the traditional token bucket profile. A good traffic profile should satisfy two criteria: first, it should consider packets from a conforming traffic stream as in-profile with high probability to ensure a strong QoS guarantee; second, it should limit the network resources consumed by a non-conforming traffic stream to no more than that consumed by a conforming stream. We model a bursty Internet traffic stream as an ON/OFF stream, where both the ON-period and the OFF-period have a heavy-tailed distribution. Our study shows that the heavy-tailed distribution leads to an excessive randomness in the long-term session rate distribution. Therefore, it is inherently difficult for any profile that limits the long-term average session rate to give a strong QoS guarantee for the conforming traffic streams. Our simulation demonstrates that a token bucket profile that couples the average rate control and the burst size control has a weak QoS guarantee. Based on this result, we propose a new class of traffic profiles that decouples the long term average rate control from the burst size control. Compared to a token bucket profile, this profile improves the level of QoS for a conforming traffic stream, yet limits the "effective bandwidth" consumed by a non-conforming traffic stream.
Keywords :
Internet; probability; quality of service; telecommunication traffic; ON/OFF stream; QoS guarantee; bursty Internet traffic; conforming traffic stream; effective bandwidth; heavy-tailed distribution; nonconforming traffic stream; packets; token bucket profile; traffic profiles; Computer science; Diffserv networks; Internet; Laboratories; Probability; Size control; Statistics; Streaming media; Telecommunication traffic; Traffic control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Print_ISBN :
0-7803-7632-3
Type :
conf
DOI :
10.1109/GLOCOM.2002.1189012
Filename :
1189012
Link To Document :
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