Multiple-access communication system capable of measuring and guaranteeing a service quality supplied for each service permitted to subscriber stations

摘要

In a multiple-access communication system where a center station dynamically allocates upstream bandwidth to subscriber stations, upon receiving a reservation information from a subscriber station, the center station obtains an upstream resource usage information of a service corresponding to an identifier added to the reservation information from an upstream resource usage control means. When a value of a guaranteed upstream rate of the service is above a value of measured average upstream rate, an upstream bandwidth is allocated immediately upon receiving the reservation information. On the contrary, when the guaranteed value is below the measured average upstream rate value, the upstream bandwidth allocation to the reservation information is deferred, resulting in preventing degradation of service quality of other subscriber stations.