Patent ID: 6907467
Filing Date: 2005-06-14
Classification: H04L,H04Q

Abstract:
1. Apparatus for Connection Admission Control for an ATM switch, intended for admitting to the switch a requested ATM connection of the DBR type, such that the “Quality of Service” of all ATM connections of the DBR type in said switch continues to satisfy certain conditions, in which a single buffer with capacity B is available for the composite traffic stream of DBR connections at an output port with capacity C, while as a boundary condition it holds that a total average load of the output port does not amount to more than ρ×C, where ρ is a constant with a value between 0 and 1, the apparatus comprising first and second sub-devices which emit a positive or negative admission signal, admission to the switch only being granted to the new ATM connection if the first and second sub-devices issue a positive admission signal, the first sub-device emitting the admission signal as a function of the capacity C and the constant ρ and the second sub-device emitting the admission signal as a function of the buffer capacity B, the constant ρ, a further constant K, and a maximum value ε for an allowable average probability of cell loss.