Intelligent congestion control for ABR service in ATM networks

Abstract

The emergence of asynchronous transfer mode (ATM) technology has generated new challenging problems for computer network designers. One of these challenges lies in the efficient management of ATM traffic so that the communication bandwidth of the network can be optimally utilized. Considerable standardization efforts in recent ATM Forum activities have been centered on the traffic management of available bit rate (ABR) service. In this paper, we examine congestion control schemes for ABR service in ATM networks. We describe a rate-based scheme that is now referred to by the ATM Forum as 'intelligent congestion control' and is currently considered as one of the most promising approaches. Moreover, we present analytical and simulation results illustrating the characteristics of the proposed scheme.

Stability and performance analysis of rate-based feedback flow controlled ATM networks

“…Also, let A upper bound all rates and let A2 in Assumption A(iii) be such that the total intensity at each queue is less than one. This is in conformance with the proposals discussed at the ATM forum [21]. As before, we can include the propagation delays in the above analysis to obtain the stability result under the same conditions.…”

“…Some earlier studies on this problem, motivated by the analysis of congestion control in datagram networks, may be found in [10,17,18,25]. More recent studies, motivated by high-speed networks, include [2,3,7,13,14,16,19,21,28]. Siu and Tzeng [21] provide a general survey of the different proposals discussed at ATM forums for the flow control of ABR traffic.…”

“…More recent studies, motivated by high-speed networks, include [2,3,7,13,14,16,19,21,28]. Siu and Tzeng [21] provide a general survey of the different proposals discussed at ATM forums for the flow control of ABR traffic. Most of these studies use a deterministic or a fluid model of the network.…”

Performance Evaluation of Frame Relay, SMDS, and ABR Services in ATM Networks

“…The rate-based control, implemented using traditional FECN and BECN schemes [8], presents an unsafe behavior as notifIcation cells can be delayed or lost when a severe congestion is experienced in the network. In fact, if no congestion notifIcation is received, the source continues to increase its transmission rate at regular time intervals up to the allowed peak value.…”

“…To overcome this serious drawback, the ATM Forum has proposed a proportional rate control algorithm (PCRA), where a source increases its transmission cell rate only at the reception of an explicit notifIcation, indicating no congestion in the network [7,8]. Otherwise, the source gradually reduces its cell rate until the minimum allowed value is reached.…”