Patent ID: 6914904

Claim:
An asynchronous transfer mode connection band control method in a system for transmitting and receiving an asynchronous transfer mode cell using an asynchronous transfer mode network, comprising: first step of preliminarily setting a connection band as band acquiring data for preferential switched virtual connection having high preference in the asynchronous transfer mode network among connections of an asynchronous transfer mode service categories requiring a fixed band, of constant bit rate, in which a traffic is generated at a constant interval in the switched virtual connection via the asynchronous transfer mode network, and a real time variable bit rate or non-real time variable bit rate generating a variable traffic having burst characteristics in transmission rate; and second step of controlling the connection band including said band acquiring data for enabling cooperation with a connection admission control for said constant bit rate, said real time asynchronous transfer mode and said real time variable bit rate and said non real-time variable bit rate, and performing reception control under a condition where the band for said preferential switched virtual connection is constantly acquired, with controlling the connection band in a range where a band for said preferential switched virtual connection is constantly acquired and guaranteed, a band for a non-preferential switched virtual connection can be constantly acquired upon said connection admission control for said non-preferential switched virtual connection.