An adaptive algorithm for measurement-based admission control in integrated services packet networks

Call admission control is typically devised so as to employ the declared wo rst-case traffic descriptors for incoming calls, a solution resulting in po or bandwidth utilization. A measurement-based admission scheme is an appeal ing alternative, offering adaptivity to the changing traffic conditions, wh ile allowing statistical multiplexing gains to be exploited. In this paper, we examine the problem of determining which traffic characterization a mea surement-based admission control algorithm should require of sources reques ting access. We also propose an adaptive measurement-based admission contro l algorithm that simplifies the estimation process. We test the new algorit hm under different traffic scenarios and show that a high utilization level is achieved without Violating delay-based QoS guarantees. (C) 2000 Elsevie r Science B.V. All rights reserved.