Patent ID: 8456988

Claim:
A method for admission control, comprising: measuring, by an egress node, traffic from an ingress node, and calculating a current congestion degree; comparing, by the egress node, the current calculated congestion degree and a last calculated congestion degree in order to determine whether the current calculated congestion degree exceeds a predetermined threshold which is not exceeded by the last calculated congestion degree, and sending the current calculated congestion degree to an admission control decision entity by the egress node only if the predetermined threshold falls within a range defined by the current calculated congestion degree and the last calculated congestion degree; receiving and storing the congestion degree by the admission control decision entity; and making a decision by the admission control decision entity based on the stored congestion degree, and determining whether to admit a service traffic request, when the service traffic request arrives at the admission control decision entity; wherein the admission control decision entity is configured at the ingress node, and sending the congestion degree to the admission control decision entity by the egress node comprises: sending, by the egress node, the congestion degree to a relay agent node; and reassembling congestion degrees from a plurality of egress nodes by the relay agent node, packaging congestion degrees that belong to the same ingress node into one message, and then forwarding the message to the admission control decision entity configured at the ingress node.