Differentiating Services with Noncongestive Queuing (NCQ)

Mamatas, Lefteris; Tsaoussidis, Vassilis

doi:10.1109/tc.2008.197

Cited by 24 publications

(26 citation statements)

References 34 publications

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“…In our results, a value between 15-20% produces the expected outcome; as shown in [8] through extensive simulations, this is the worse-case scenario for UPNQ. We have shown in [7] that a small rate of packets can be serviced with zero impact on the performance of the flows sharing the same channel.…”

Section: Service Differentiation For Upnsmentioning

confidence: 99%

“…In [7], we have shown that when the impact of the guest's queuing delay to the home-user (i.e., k) is below 5%, this is, in general, unnoticeable by the home-user's applications. That said, setting k ≈ 0.01 − 0.05 (i.e., 1% -5%) and regulating the rate of the guest's traffic (λ2) according to Equation 1 will have statistically no impact on the performance of the home-traffic (λ1).…”

Section: Service Differentiation For Upnsmentioning

confidence: 99%

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Incentives and algorithms for broadband access sharing

Mamatas

Psaras

Pavlou

2010

Proceedings of the 2010 ACM SIGCOMM Workshop on Home Networks

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The unprecedented growth of the mobile (Smart)phone industry that comes together with the corresponding application development market has made apparent that mobile networking through 3G links is just about to reach an unbreakable limit, in terms of network capacity. The networking research community has recently started considering alternative connectivity approaches to support and boost the performance of mobile networking. In particular, researchers have identified a big amount of "power", hidden at the edges of the network, which remains there unexploited and is no other than the WiFi technology deployed in home-networks. We explore incentives and algorithms for Broadband Access Sharing to support nomadic users and show that ubiquitous connectivity in densely populated areas is already possible, since the infrastructure is already there, waiting to be used.

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Section: Service Differentiation For Upnsmentioning

confidence: 99%

Section: Service Differentiation For Upnsmentioning

confidence: 99%

Incentives and algorithms for broadband access sharing

Mamatas

Psaras

Pavlou

2010

Proceedings of the 2010 ACM SIGCOMM Workshop on Home Networks

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“…Non-Congestive Queuing (NCQ) [21] assumes that non-congestive traffic cannot exceed a predetermined threshold, called ncqthresh, which represents the upper limit of permitted prioritized service. The threshold typically reflects a service percentage for prioritization.…”

Section: Non-congestive Queuing (Ncq)mentioning

confidence: 99%

“…The limitation is strictly associated with the cumulative service impact of prioritization on long packets. In [21][22][23]27] we have shown that, based on service thresholds, the service gains can be regulated for non-congestive applications, such as sensor applications or other types of applications that use small packets and rates, with almost-zero cost on congestive applications. Here, we apply the properties of LIBS one step beyond; we explore a differentiation scheme to satisfy better the delay requirements of VoIP applications.…”

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confidence: 99%

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Less Impact Better Service (LIBS)

Mamatas

Tsaoussidis

2010

Ann. Telecommun.

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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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A delay‐oriented prioritization policy based on non‐congestive queuing

Georgiou¹,

Mamatas²,

Tsaoussidis³

2011

Int J Communication

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SUMMARYIn this paper, we depart from our previously proposed Non-Congestive Queuing (NCQ) mechanism and propose a new scheduling discipline that allows for efficient interoperation of dedicated systems (such as sensor and voice networks) with the Internet. More precisely, our approach provides delay guarantees to applications that do not contribute noticeably to congestion because of their tiny packet sizes and low transmission rates. In addition, our approach uses a second level of prioritization that conditionally favors, in terms of delay, applications with slightly longer packets as well. Based on the NCQ concept, NonCongestive Queuing Plus (NCQ+) promotes applications that require comparatively small service times, as long as their total service times cause insignificant delays to other packets in the queue. Therefore, we prioritize packets, and in turn corresponding flows, according to their impact on total delay. We evaluate NCQ+ using ns-2-based experiments. Results show that whenever prioritization buffer resources are sufficient, NCQ+ can provide non-detectable delays to sensor applications and conditionally improve the performance of VoIP applications, while maintaining the impact on the performance of the other flows insignificant.

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Differentiating Services with Noncongestive Queuing (NCQ)

Cited by 24 publications

References 34 publications

Incentives and algorithms for broadband access sharing

Incentives and algorithms for broadband access sharing

Less Impact Better Service (LIBS)

A delay‐oriented prioritization policy based on non‐congestive queuing

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