THE RESEARCH OF PRODUCTIVITY OF SENSOR NETWORK: THE KEY AND AUXILIARY PERFORMANCE INDICATORS

Abstract

Ad Hoc sensor network with mobile network nodes is considered.
The basic parameters of the bandwidth and quality of the data exchange channel
constructed on the sensor network are analyzed. Statistical analysis of network
service quality uses a parameter based on Mean Opinion Score (MOS). This
parameter takes into account characteristics such as jitter, delay time, and packet
loss rate, and allows you to quantify call quality for calls in the range of 1.0 to 5.0.
At the stage of designing the sensor network and in the process of its development,
the task of choosing a routing algorithm is very important. To solve the problem of
optimal routing in the sensor network a partial mathematical model of the network,
consisting of N switching nodes and M lines of wireless communication, has been
developed. The average time for messages to remain in the line between two network
nodes is determined. To improve methods and algorithms for routing in sensory
networks, a generalized mathematical model of the routing process in complex
networks and methodology has been developed to select the best route or a set of best
routes by a set of criteria.For the most complete comparative evaluation of the
effectiveness of a route, it is advisable to consider the route metric ‒ the generalized
distance selected for the selected service class and the administrative distance ‒ the
route parameter by which the degree of confidence in information received from
neighboring devices is determined. It is shown that for optimal organization of data flows
in a heterogeneous network it is advisable to use routing algorithms with many quality
criteria. To do this, you must conduct an ongoing analysis of the characteristics of the
network segments and automatically modify the routing tables. The basis of quality
functionality is the route metric. In order to increase the reliability of the data on the
state of the route, a quantitative (functional) measure of the administrative distance was
introduced into the mathematical model. As a tool for evaluating and managing criteria
by their relative importance, it is proposed to use the method of analysis of the Saati
hierarchy.