Il'ina I. Method of providing the opportuneness of passing the information in the computer networks of the critical application systems

Research object is an information transferring process in the computer networks of the critical application systems (CN CAS). Research purpose is the development and reasoning of timeliness providing method of information transferring in CAS on the basis of computer networks resource distributing adaptation process to the run-time changes of traffic intensity. Research methods are the research of structural topologic properties of CN CAS was conducted with the use of graphs and sets theories. Research of data flow intensity changes character appealed to the essential points of theory of chances, connection and mass service. The estimation of correctness and validity of theoretical and practical results was conducted with the help of methods of mathematical and imitation design. Practical results are in providing of timeliness of information transferring in the computer networks of the critical application systems due to the effective use of network resource and multiway routing. Novelty – the mathematical model of the statistical multiplexing process in CN CAS was improved. This model differs from the known ones that the influence of the data flows intensity is taken into account in connection links, their remaining carrying capacity and features of the statistical multiplexing. It allowed increasing the estimation exactness of informative packages maintenance mean time in CN CAS signal centers up to 4 times. The determination method of great number information transferring ways in CN CAS was firstly developed. It consists in the complex use of algorithms of preliminary topology construction and finding of the «sites-successors» on the routes to every addressee for the exception of «cycling» at the transmission of information in CN CAS, that will allow shortening the interval of time delay packages stabilizing up to 2…4 times at sharp traffic fluctuations. The method of optimization of great number of transferring information routes in CN CAS received further development, which provides the minimum value of informative packages distortion probability at the account of limitation that is imposed on probability of their delivery to the recipient at time, not exceeding the possible one. It will allow decreasing probability of informative packages distortion up to 2…3 times while providing the necessary transferring timeliness of digital information. Implementation - Research, Design and Technological institute of micrography, Labour Red Colour Order Institute of radiophysics and electronics named after A.Ya. Usikov, NAS of Ukraine, Karkov Kozhedub Air Force University. Sphere of the use - computer systems and networks.