Method and apparatus for call admission control in CDMA mobile communication system

摘要

A call admission control scheme for a CDMA mobile communication system which can satisfy a given connection quality (blocking probability) while guaranteeing a predetermined communication quality. At each base station, a blocking probability and an outage probability of communication quality at each base station are calculated to adjust a maximum number of simultaneously connectable users at each base station according to the calculated results, and a call admission control is carried out according to the adjusted maximum number of simultaneously connectable users. A maximum number of simultaneously connectable users or an interference threshold can be determined from a first relationship between an offered traffic and a maximum number of simultaneously connectable users or an interference threshold for guaranteeing the prescribed communication quality and a second relationship between an offered traffic and a maximum number of simultaneously connectable users or an interference threshold for satisfying the prescribed blocking probability, and used for the call admission control.