Дослідження гетерогенних когнітивних мереж доступу

Abstract

It is shown that inter-system VHO in heterogeneous cognitive networks includes the steps of obtaining information about accessible networks, selecting the target network, organizing a secure connection, authentication, obtaining a network ID, and organizing a communication session in the target network based on structural and functional modeling. It is shown that the developed generalized model and method for describing signal messages allow us to formalize relationships between network nodes and streamline the description of types of signal messages in inter-system VHOs by setting relations on multiple. It is proved that in order to ensure continuity of communication services in heterogeneous cognitive networks in interconnect VHOs, it is necessary to estimate the delay of traffic transmission, which is equal to the time of switching of the subscriber device to the target network. It is proved that in order to ensure continuity of communication services in heterogeneous cognitive networks, it is necessary to estimate the delay of transfer of traffic equal to the time of switching of the subscriber device in the cognitive network, and when using only cognitive technology for continuity of provision of services, it is necessary to estimate the access time to the transmission channel. It is proved that for the organization of communication in the cognitive access network, taking into account the inter-system VHO, it is necessary to analyze and forecast the number of communication sessions. It is shown that the ranking of networks for the selection of the target network for inter-system VHOs can be performed by metrics using a single assessment base on the basis of the expert evaluation of advantages and the derived BL (MM) criterion. It is shown that object-oriented ontology allows to represent knowledge about the order of use of channels in the cognitive network of IEEE 802.22 standard.