Abstract
Software-defined networks of a large dimension have a complex and branched structure; they are inherent in them by continuous expansion and dynamic characteristics, which significantly limits the application of known methods for their modelling and optimization. Consequently, the problems of the analysis of next-generation networks at the system level and the study of their new features, mainly due to large size and complex geometry (topology), are relevant. The tasks of constructing optimal structures of complex networks are solved by means of the theory of hierarchical systems, which is widely used to describe network structures, in particular, flow control networks. The work is devoted to the load balancing in SDN depending on their topological hierarchical structure and type of traffic (vertical, horizontal, and hybrid).
Highlights
In the field of telecommunication technologies, there is a steady tendency to unite and integrate networks using different network technologies and different information transmission medium. This led to the emergence of a new class of networks – next-generation (NG) wireless networks [1] that use a single communication network with a developed radio access system and a support for user mobility
Wireless networks allow the organization of local (LAN) and city networks (MAN), integrated into WANs
Given that wireless networks form the basis of the real Internet, it can be predicted that for a long time, such networks will be inherent in the Future Networks, and the problems associated with their reliability, productivity, Quality of Service (QoS), security and scalability will be further enhanced
Summary
In the field of telecommunication technologies, there is a steady tendency to unite and integrate networks using different network technologies and different information transmission medium. This led to the emergence of a new class of networks – next-generation (NG) wireless networks [1] that use a single communication network with a developed radio access system and a support for user mobility. Wireless networks allow the organization of local (LAN) and city networks (MAN), integrated into WANs. Given that wireless networks form the basis of the real Internet, it can be predicted that for a long time, such networks will be inherent in the Future Networks, and the problems associated with their reliability, productivity, Quality of Service (QoS), security and scalability will be further enhanced. The synthesis of the topological structure of the network, taking into account its development, flow dynamics and reliability, the choice of performance indicators and algorithms for the functioning of its elements [2, 3]; realization of technology of interaction (system of information exchange protocols, having a multi-level structure) [4, 5]; and managing interoperability at the transport level [6,7,8] (developing switching, routing, flow management, network reconfiguration, etc.)
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