A TWO-LEVEL METHOD OF HIERARCHICAL-COORDINATION QoS-ROUTING ON THE BASIS OF RESOURCE RESERVATION

摘要

Method for the hierarchical-coordinational QoS routing based on the network recourse reservation is proposed. The method is based on the introduction of a two-level hierarchy of solution. The lower level was responsible for ensuring a consistent solution of problem of the distributed source routing and reserving the link resource with provision of the end-to-end QoS requirements for the packet rate and average packet delay. Main task of the upper level id overload preventing of communicator links during the reservation of their bandwidths initialized in distributed manner by each of the border routers of the network. It is established that the method provides an iterative calculation of the required control variable, the number of such iterations depend on the network structure, the amount of variable network resources, the number of flows, and QoS requirements.