Policing and shaping of data flows and control overload in specialised computer networks

Анотація

The problems of quality of service in the aeronautical computer networks with mobile nodes are researched. The method of control of networks based on partitioned estimation and control as unified framework for adaptive real-time systems is developed. Considering of delays of control data and compensating of delays due to prediction of traffic parameters in advance we decrease negative impact of these delays. The results of calculations of improvement of network performance are represented. The numerical simulation results presented have shown the effectiveness of the proposed predictive feedback control law. It was found that processes with larger Hurst parameter have better prediction performance. This result is expectable in considering long-range dependence of self-similar traffic characteristics. Proposed procedure of traffic shaping is rather simple and efficient. The results of calculations of improvement of network performance are represented.

Keywords: computer network, overload, mobile node, quality of service, real-time system, network performance, compensating of delays, Hurst parameter, prediction of traffic parameters