Journal ArticleDOI
Dimensioning bandwidth for elastic traffic in high-speed data networks
Arthur W. Berger,Yaakov Kogan +1 more
Reads0
Chats0
TLDR
The model is compared with simulations, the accuracy of the asymptotic approximations are examined, the increase in bandwidth needed to satisfy the tail-probability performance objective as compared with the mean objective, and regimes where statistical gain can and cannot be realized are shown.Abstract:
Simple and robust engineering rules for dimensioning bandwidth for elastic data traffic are derived for a single bottleneck link via normal approximations for a closed-queueing network (CQN) model in heavy traffic. Elastic data applications adapt to available bandwidth via a feedback control such as the transmission control protocol (TCP) or the available bit rate transfer capability in asynchronous transfer mode. The dimensioning rules satisfy a performance objective based on the mean or tail probability of the per-flow bandwidth. For the mean objective, we obtain a simple expression for the effective bandwidth of an elastic source. We provide a new derivation of the normal approximation in CQNs using more accurate asymptotic expansions and give an explicit estimate of the error in the normal approximation. A CQN model was chosen to obtain the desirable property that the results depend on the distribution of the file sizes only via the mean, and not the heavy-tail characteristics. We view the exogenous "load" in terms of the file sizes and consider the resulting flow of packets as dependent on the presence of other flows and the closed-loop controls. We compare the model with simulations, examine the accuracy of the asymptotic approximations, quantify the increase in bandwidth needed to satisfy the tail-probability performance objective as compared with the mean objective, and show regimes where statistical gain can and cannot be realized.read more
Citations
More filters
Analytical Models for Dimensioning of OFDMA-based Cellular Networks Carrying VoIP and Best-Effort Traffic
TL;DR: In this article, generic Markovian models are developed specifically for three service classes defined in the WiMAX standard: UGS, ertPS and BE, respectively corresponding to VoIP, VoIP with silence suppression and best-effort traffic.
Journal ArticleDOI
Distribution of processor-sharing customers for a large closed system with multiple classes
Arthur W. Berger,Yaakov Kogan +1 more
TL;DR: A closed processor-sharing system with multiple customer classes, which consists of one infinite server (IS) station and one PS station, and asymptotic approximations to the stationary distribution of the total number of customers at the PS station are derived.
Journal ArticleDOI
Analytical computation of completion time distributions of short-lived TCP connections
TL;DR: A new technique for the analytical evaluation of distributions of the completion time of short-lived TCP connections is presented and discussed, and its asymptotic complexity is independent of the network topology, of the number of concurrent flows, and of other network parameters.
Journal ArticleDOI
Análisis del Comportamiento del tráfico en Internet durante la Pandemia del Covid-19: el caso de Colombia
TL;DR: In this article, the authors take the course design from a didactic aspect, focused on a meaningful learning where the didactic triangle: teacher, student and content, interact with a very important integrator element, ICT, which allows enhancing interactive processes with all of the web resources.
Journal ArticleDOI
Unlocking the Advantages of Dynamic Service Selection and Pricing
TL;DR: Easy to implement on-line algorithms to minimize the overall usage cost to individual mobile users and can handle many practical issues such as capacity limitations, arbitrary price fluctuations and loss/gain of service providers due to mobility.
References
More filters
Book
Data networks
TL;DR: Undergraduate and graduate classes in computer networks and wireless communications; undergraduate classes in discrete mathematics, data structures, operating systems and programming languages.
Book
Random Perturbations of Dynamical Systems
M. I. Freĭdlin,A. D. Ventt︠s︡elʹ +1 more
TL;DR: In this article, the authors introduce the concept of random perturbations in Dynamical Systems with a Finite Time Interval (FTI) and the Averaging Principle.
Journal ArticleDOI
Wide area traffic: the failure of Poisson modeling
Vern Paxson,Sally Floyd +1 more
TL;DR: It is found that user-initiated TCP session arrivals, such as remote-login and file-transfer, are well-modeled as Poisson processes with fixed hourly rates, but that other connection arrivals deviate considerably from Poisson.
Journal ArticleDOI
Self-similarity through high-variability: statistical analysis of Ethernet LAN traffic at the source level
TL;DR: In this article, the authors provide a plausible physical explanation for the occurrence of self-similarity in local-area network (LAN) traffic, based on convergence results for processes that exhibit high variability and is supported by detailed statistical analyzes of real-time traffic measurements from Ethernet LANs at the level of individual sources.
Book
TCP/IP Illustrated Vol 1 The Protocols
TL;DR: TCP/IP Illustrated, Volume 1 is a complete and detailed guide to the entire TCP/IP protocol suite - with an important difference from other books on the subject: rather than just describing what the RFCs say the protocol suite should do, this unique book uses a popular diagnostic tool so you may actually watch the protocols in action.