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Erschienen in: Annals of Telecommunications 7-8/2010

01.08.2010

Less Impact Better Service (LIBS)

A service paradigm for Internet telephony

verfasst von: Lefteris Mamatas, Vassilis Tsaoussidis

Erschienen in: Annals of Telecommunications | Ausgabe 7-8/2010

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Abstract

We discuss a new packet service paradigm, called “Less Impact Better Service” (LIBS). In simple terms, LIBS primarily schedules packets based on the delay they cause and cancels service differentiation policies when the cumulative delay due to prioritization becomes significant for non-prioritized packets. Based on LIBS, we evaluate different service policies that prioritize small packets using different service boundaries and we show that, by and large, LIBS satisfies better a number of applications with diverse demands in delay and throughput. We emphasize on Voice over IP applications, which are delay-sensitive but also utilize small packets and rates. Among other traditional performance measures, we also measure fairness in the context of LIBS, that is, we address the question whether the delay experienced per flow is proportional to the delay caused by that flow. We obtained very promising simulation results.

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Fußnoten
1
even if it is measured, the precision and granularity of measurements are dubious
 
2
cumulative, not per-flow
 
3
it is not significant in our experiments
 
4
The R-Factor is encoded in the available bits of the IP header (4 to 17 bits) [29]
 
5
The value 100 represents the best voice quality
 
6
additional scenarios that evaluate NCQ can be found in [21]
 
7
A LIBS router incorporates a LIBS-based mechanism (i.e., one of NCQ, SNCQ or NCQ-VoIP)
 
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Metadaten
Titel
Less Impact Better Service (LIBS)
A service paradigm for Internet telephony
verfasst von
Lefteris Mamatas
Vassilis Tsaoussidis
Publikationsdatum
01.08.2010
Verlag
Springer-Verlag
Erschienen in
Annals of Telecommunications / Ausgabe 7-8/2010
Print ISSN: 0003-4347
Elektronische ISSN: 1958-9395
DOI
https://doi.org/10.1007/s12243-010-0175-1

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