APPROACHES TO SERVICE REQUESTS IN INTELLECTUAL SUPERSTRUCTURE IN NEXT GENERATION NETWORKS

The paper considers the existing principles of management services in intellectual add-in of NGN - centralized and decentralized management, shows their advantages and disadvantages. The architecture of intellectual add-in with a mixed control strategy was proposed which presents several hierarchy levels, which are key nodes of intellectual add-in. The lower level has a few Softswitch, which are connected to each other. At the top level of the hierarchy there is a universal server, which is a single control center. At an average level there are specialized server services, connected with the central control device and a Softswitch. Intellectual add-in with a mixed architecture offers several approaches to service requests. According to the first approach, the request for service arrives at one of the dedicated servers through the connected Softswitch installed in a separate area. In the other, the request is taken Softswitch, which is connected to the universal server services. The choice of management approach to intellectual add-in builds on the assessment of management effectiveness of intelligent services, the calculation of which is necessary to consider individual indicators of quality. As partial indicators of intellectual services provision quality the author proposed to use the total residence time of request for intelligent service in management system, the total waiting time of request service, the probability of request blocking on the server on the upper level of intellectual add-in, the probability of request service on the server on the middle level of intellectual add-in, the control system cost. The calculation of the final effectiveness based on the proposed specific indicators for each of the presented approaches to architecture of the intellectual add-in will provide an opportunity to determine the best management option.