Effective Envelopes: Statistical Bounds on Multiplexed Traffic in Packet Networks

Abstract--A statistical network service which allows a certain fraction of traffic to not meet its QoS guarantees can extract additional capacity from a network by exploiting statistical properties of traffic. Here we consider a statistical service which assumes statistical independence of flows, but does not make any assumptions on the statistics of traffic sources, other than that they are regulated, e.g., by a leaky bucket. Under these conditions, we present functions, socalled local effective envelopes and global effective envelopes, which are, with high certainty, upper bounds of multiplexed traffic. We show that these envelopes can be used to obtain bounds on the amount of traffic on a link that can be provisioned with statistical QoS. A key advantage of our bounds is that they can be applied with a variety of scheduling algorithms. In fact, we show that one can reuse existing admission control functions that are available for scheduling algorithms with a deterministic service. W...

• Type: Conference
• Year: 2000
• Where: INFOCOM
• Authors: Robert Boorstyn, Almut Burchard, Jörg Liebeherr, Chaiwat Oottamakorn
• Keywords: Communications, INFOCOM 2000, QoS Guarantees, Statistical Qos, Statistical Service