METHODOLOGY FOR DERIVATION OF NETWORK RESOURCES TO SUPPORT VIDEO-RELATED SERVICES IN ATM-BASED PRIVATE WIDE-AREA NETWORKS

Citation
Ci. Ani et al., METHODOLOGY FOR DERIVATION OF NETWORK RESOURCES TO SUPPORT VIDEO-RELATED SERVICES IN ATM-BASED PRIVATE WIDE-AREA NETWORKS, IEE proceedings. Communications, 142(4), 1995, pp. 233-237
Citations number
15
Categorie Soggetti
Engineering, Eletrical & Electronic
ISSN journal
13502425
Volume
142
Issue
4
Year of publication
1995
Pages
233 - 237
Database
ISI
SICI code
1350-2425(1995)142:4<233:MFDONR>2.0.ZU;2-F
Abstract
The statistical mode of operation of asynchronous-transfer-mode (ATM) networks can lead to congestion which, in turn, leads to a degradation in the quality of service (QOS) of calls. Normally, congestion manife sts itself by overflow in the input or output controllers of switches. An outstanding research issue relating to ATM networks,therefore, is resource management; i.e. determining the optimum network resources, i n terms of link bandwidth and buffer capacity in switches, that are re quired for a call which guarantees a defined QOS, even under high-netw ork-loading conditions. The two most important QOS parameters associat ed with a cell are cell-loss rate and cell-delay variation. In practic e, the parameters are interrelated and make conflicting demands on the available resources. Video services, for example, are sensitive to bo th parameters and hence it is necessary to consider the combined param eters when allocating resources for such services. The paper describes a new method for deriving the optimum resources required for video-re lated services in an ATM-based private network to guarantee specific Q OS requirements.