Sizing and Provisioning for Physical and Virtual Path Networks Using Self-Sizing Capability

Shigeo SHIODA  Hiroshi SAITO  Hirofumi YOKOI  

IEICE TRANSACTIONS on Communications   Vol.E80-B   No.2   pp.252-262
Publication Date: 1997/02/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Telecommunications Network Planning and Design)
Category: Network design techniques and tools
ATM,  network design,  virtual path (VP),  Kalman filter,  bandwidth demand,  

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This paper discusses the problems in designing virtual-path (VP) networks and underlying transmission-path (TP) networks using the "self-sizing" capability. Self-sizing implies an autonomous adjustment mechanism for VP bandwidths based on traffic conditions observed in real time. The notion of "bandwidth demand" has been introduced to overcome some of the problems with VP bandwidth sizing, e.g., complex traffic statistics and diverse quality of service requirements. Using the bandwidth demand concept, a VP-bandwidth-sizing procedure is proposed in which real-time estimates of VP bandwidth demand and successive VP bandwidth allocation are jointly utilized. Next, TP bandwidth demand, including extra capacity to cover single-link failures, is defined and used to measure the congestion level of the TP. Finally, a TP provisioning method is proposed that uses TP "lifetime" analysis.