Patent ID: 7876682

Claim:
An admission control method for determining a session admission probability with respect to a new session admission of a path, so that a bandwidth measured by a bandwidth measuring apparatus in the path and corresponding to a sum of bandwidths used converges to a vicinity of a bandwidth target value, comprising: computing, in an admission control server, the session admission probability based on a deviation between the measured bandwidth and the bandwidth target value using a feedback control rule of a closed loop system; and judging, in a session management server, whether to accept a new session in the path based on the computed session admission probability, and processing the new session admission based on a result of the judging, wherein parameters of the feedback control rule have values that are obtained from within a stable region of the parameters, the stable region is based on a sum of bandwidths requested by new sessions to the path at measuring intervals of the measured bandwidth, and the stable region becomes smaller as the sum of the bandwidths requested by the new sessions to the path becomes larger.