The Experts below are selected from a list of 14595 Experts worldwide ranked by ideXlab platform
K W Fendick - One of the best experts on this subject based on the ideXlab platform.
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evolution of controls for the available bit rate service
IEEE Communications Magazine, 1996Co-Authors: K W FendickAbstract:In the summer of 1993, the asynchronous transfer mode (ATM) community began a search for a mechanism to allocate bandwidth dynamically within an ATM network, while simultaneously preventing data loss. By the fall of 1994, the ATM Forum had introduced a new service category for this purpose, the available bit rate (ABR) service, and had selected a rate-based mechanism for its support. Simply put, the mechanism would consist of a stream of ABR resource management (RM) cells, generated by one end of the connection (the source) and looped back by the other (the destination), into which switches would encode the maximum rate at which the ABR source was to generate data. The ABR service is an addition to ATM that uses a feedback mechanism to control the transmission rates of traffic sources. Although the performance of the ABR service will depend critically on the quality of feedback sent by switches, the algorithms for determining this feedback are largely outside the scope of ATM standards and specifications. We describe how two of the properties implemented by the ABR source and destination, out-of-rate RM cells and a use-it-or-lose-it policy, were implicitly architectural decisions, and we explain how and why the ATM Forum ultimately revised these decisions. We then discuss how the ATM Forum addressed the issues of conformance testing, point-to-multipoint connections, and parameter negotiation for the ABR service. At the end, we reflect on the process by which the ABR specification was developed.
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the rate based flow control framework for the available bit rate atm service
IEEE Network, 1995Co-Authors: F Bonomi, K W FendickAbstract:A new ATM service category, the available bit rate service, is currently the subject of intense development. This new service will systematically and dynamically allocate available bandwidth to users by controlling the flow of traffic with feedback. The rate-based flow control framework has been identified as the most appropriate for the support of this new service. >
C Cseh - One of the best experts on this subject based on the ideXlab platform.
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evaluation of the virtual source virtual destination technique for available bit rate traffic in atm networks
Annales Des Télécommunications, 1999Co-Authors: J Baalmann, C CsehAbstract:This paper deals with the performance analysis of the virtual source/virtual destination (VS/VD) technique for ABR flow control. The VS/VD mechanism allows the segmentation of the ABR end-to-end feedback loop. We investigate the behaviour and performance of classical explicit rate switch algorithms in conjunction with VS/VD and give recommendations for improvements and alterations. The analysis is based on simulations of different network topologies and traffic scenarios.
R Srikant - One of the best experts on this subject based on the ideXlab platform.
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available bit rate congestion control in atm networks developing explicit rate control algorithms
IEEE Control Systems Magazine, 2001Co-Authors: O C Imer, S Compans, Tamer Basar, R SrikantAbstract:We present a control-theoretic approach to designing available bit rate (ABR) congestion control algorithms. ATM networks deal with different types of traffic. Among the several services offered by ATM, the ABR service plays a central role in regulating the network traffic, as it is the only service category that uses explicit feedback from the network. We present several algorithms for ABR congestion, which can adapt to the variations in the number of sources sharing a switch. These properties make this algorithm easier to apply in volatile networks, where both the network delay and the number of active sessions are not known or cannot be predicted accurately beforehand. In summary, we strongly believe that control theoretic design tools can be effectively used in designing high-performance algorithms in the context of ATM ABR congestion control.
F Bonomi - One of the best experts on this subject based on the ideXlab platform.
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flow control for the atm available bit rate service
Conference on Decision and Control, 1995Co-Authors: F BonomiAbstract:During the past year the identification of appropriate flow control mechanisms for the support of the new available bit rate (ABR) ATM service has attracted the intense interest of the technical community worldwide. A key aspect of the ABR service definition is the reliance an a feedback control loop linking the potential points of congestion in an ATM network and the sources of data. The feedback control of the flow of data cells within multiservice networks characterized by both extremely high data rates, and possibly long propagation delays poses formidable challenges. This is particularly true when very strict quality of service requirements are imposed, together with the need to reduce expensive buffering needs. In this paper the author discusses some fundamental and sometimes new control aspects brought to the surface by the intense effort towards the definition of appropriate feedback flow control schemes for the ABR service. The primary goal for the ABR service is the economical support of applications with vague requirements for throughputs and delays.
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the rate based flow control framework for the available bit rate atm service
IEEE Network, 1995Co-Authors: F Bonomi, K W FendickAbstract:A new ATM service category, the available bit rate service, is currently the subject of intense development. This new service will systematically and dynamically allocate available bandwidth to users by controlling the flow of traffic with feedback. The rate-based flow control framework has been identified as the most appropriate for the support of this new service. >
J Baalmann - One of the best experts on this subject based on the ideXlab platform.
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evaluation of the virtual source virtual destination technique for available bit rate traffic in atm networks
Annales Des Télécommunications, 1999Co-Authors: J Baalmann, C CsehAbstract:This paper deals with the performance analysis of the virtual source/virtual destination (VS/VD) technique for ABR flow control. The VS/VD mechanism allows the segmentation of the ABR end-to-end feedback loop. We investigate the behaviour and performance of classical explicit rate switch algorithms in conjunction with VS/VD and give recommendations for improvements and alterations. The analysis is based on simulations of different network topologies and traffic scenarios.
