VBR over VBR: The Homogeneous, Loss-Free Case

We consider the multiplexing of several variable bit rate (VBR) connections over one variable bit rate connection where the multiplexing uses a multiplexing bu er of size B. The VBR trunk is itself a connection and has a multidimensional connection descriptor, reecting peak and sustainable rates. Given a cost function for the VBR trunk and a connection admission control (CAC) method for the input connections, we focus on the problem of nding the VBR trunk connection descriptor that minimizes the cost function and is able to accept a given set of VBR input connections. First, we show that, under reasonable assumptions on the cost function, the optimization problem can be reduced to a simpler one. Then we consider the homogeneous, loss-free case, for which we give an explicit CAC method. In that case, we nd that, for all reasonable cost functions, the optimal VBR trunk is either of the CBR type, or is truly VBR, with a burst duration equal to the burst duration of the input connections....

• Type: Conference
• Year: 1997
• Where: INFOCOM
• Authors: Silvia Giordano, Jean-Yves Le Boudec, Philippe Oechslin, Stephan Robert
• Keywords: Communications, Cost Function, INFOCOM 1997, VBR Trunk, VBR Trunk Connection