Fuzzy evaluation of SLA-oriented QoSM (the quality of service management) in NGN

The quality of service management-QoSM is a new conception from NGN service layer. To evaluate QoSM efficiently, it is necessary and elementary to define an evaluation metrics and find an evaluation method. First, the evaluation metrics for QoSM based on SLA service management contents is proposed. Then a fuzzy evaluating method to evaluate QoSM based on SLA-oriented service management metrics is designed. At last, an example of evaluating is described to illuminate that the fuzzy evaluating method for the QoSM of NGN is useful and correct.