AN ADAPTIVE SCHEME FOR ADMISSION CONTROL IN ATM NETWORKS

This paper presents a real time front-end admission control scheme for ATM networks. A call management scheme which uses the burstiness asso ciated with traffic sources in a heterogeneous ATM environment to effe ct dynamic assignment of bandwidth is presented, In the proposed schem e, call acceptance is based on an on-line evaluation of the upper boun d on cell loss probability which is derived from the estimated distrib ution of the number of calls arriving. Using this scheme, the negotiat ed quality of service will be assured when there is no estimation erro r. The control mechanism is effective when the number of calls is larg e, and tolerates loose bandwidth enforcement and loose policing contro l. The proposed approach is very effective in the connection oriented transport of ATM networks where the decision to admit new traffic is b ased on the a priori knowledge of the state of the route taken by the traffic. (C) 1997 Elsevier Science B.V.