AN EFFICIENT APPROACH TO REAL-TIME TRAFFIC ROUTEING FOR TELEPHONE NETWORK MANAGEMENT

When contingencies occur in the telephone network the proper traffic c ontrol actions for rearranging the traffic flow must be promptly taken in a short period of time, otherwise, the congestion will soon spread to other parts of the network. In this paper, a multicommodity maxima l flow model is proposed to formulate the problem, and an efficient ap proach is proposed to find the solution within a short time period. Th e node pairs are first sorted by the traffic demand into decreasing or der and the capacity of links is allocated to the node pair with large st demand. The traffic allocation is then iteratively reallocated on t hose routes which share the same links to find a better solution, unti l that solution is obtained. The advantages of this approach are: (1) a feasible solution can be obtained within a short time period; (2) th e affected traffic can be rerouted on paths with more than two links; (3) an acceptable solution can be found once the period has expired.