Abstract: During the migration to next generation network, multipath network may be used for improving reliability and robustness. The chose multipath in network is the paths which supply the traffic to transfer. How to balance the traffic availability is one of the most important problems in multipath network to improve the performance. To loss rate sensitive traffic, such as VOID (Voice over Internet Protocol) , this paper provided an algorithm to solve the problem of balancing the traffic in multipath network by prediction and optimization theory. I}he algorithm predicts the packet loss rate of each and every path at first, then aiming at the minimum sum of the packet loss rate and achieving the optimal utilization ratio of resources, it converts a traffic balancing problem into optimization problem. The experimental results demonstrate that the proposed algorithm can perform well on QOS, such as packet loss rate.

Key words: Multipath network, Traffic allocation, Optimization theory, Prediction