Study on the optimization of transport control policy in communication network

In communication networks with policy-based Transport Control on-Demand (TCoD) function, the transport control policies play a great impact on the network effectiveness. To evaluate and optimize the transport policies in communication network, a policy-based TCoD network model is given and a compre-hensive evaluation index system of the network effectiveness is put forward from both network application and handling mechanism perspectives. A TCoD network prototype system based on Asynchronous Transfer Mode/Multi-Protocol Label Switching (ATM/MPLS) is introduced and some experiments are performed on it. The prototype system is evaluated and analyzed with the comprehensive evaluation index system. The re-sults show that the index system can be used to judge whether the communication network can meet the ap-plication requirements or not, and can provide references for the optimization of the transport policies so as to improve the communication network effectiveness.