## 2 State-of-the-Art
The low latency inherent in the URLLC also allows us to consider the 5G generation network as a basis for implementing services for remote surgery, industrial automation, and real-time finance process control [31, 32]. It is expected that with the mMTC service, 5G generation networks will also contribute to the development of smart cities and the Internet of Things by deploying sensor networks in cities and rural areas. The underpinnings of the 5G platform for security and reliability of information interaction will make such networks suitable for use in critical services [33, 34, 35, 36, 37, 38], such as police, security, energy, water supply, and health services. The range of potentially promising services that can be implemented precisely through the capabilities of 5G generation communication networks is not limited to the mentioned eMBB, URLLC, and mMTC. These services only represent the most typical real-world scenarios that have polar requirements for the quality characteristics of communication services. These good services form the base, which, in Figure 1, is presented in a triangle [17]. The sides of the triangle symbolize the fixed quality requirements for access speed, transmission reliability, and delay time. Some applications can be implemented both inside the triangle and on its faces by combining the appropriate set of these quality characteristics. Figure 1: Services that can be implemented on the technological basis of 5G generation communication networks [17]. As mentioned in Section 1, the 5 Ge platform implements technologies for forming independent virtual network segments in the information environment of the base station [7, 8, 9, 10]. To support each such elements, system resources are allocated, and errors or malfunctions in one segment do not affect the Quality of Service (QoS) value for other components. In other words, the isolation of the virtual network segment to provide the appropriate service nomenclature of acceptable quality is guaranteed. At the same time, the algorithm for radio resource allocation should provide the effective targeted use of the system resources of the base station by taking the fact that each active virtual network segment is allocated a corresponding guaranteed amount of these resources into account [8, 10]. This topic has recently attracted the attention of researchers. In [7, 8, 9], a flexible model for structuring a radio access network (RAN) is presented. The model focuses on providing an appropriate level of isolation for the resources of Virtual Network Operators (VNOs), which are network traffic tenants. The isolation level is defined to ensure that the Service Level Agreement (SLA) between the VNOs is not violated, even if different network settings change. The desired isolation level is determined by optimizing the RAN infrastructure used by dynamically allocating radio resources between different segments fairly. Articles [10, 39] also consider virtual radio resource management (VRRM), which provides the optimal use of virtualized resources of the infrastructure provider between several virtual network operators. The articles present the architecture of the VRRM modeling tool in terms of queuing systems [39]. With the help of the developed tool, the analysis of the practical scenario with three suppliers and different types of SLA can be conducted, and productivity indicators at a change loading site on traffic and SLA can be investigated. In studies [11, 15, 40], the theoretical basis for the multi-operator scheduling (MOS) distribution of radio resources is considered. Due to the dynamic adaptation to the load of the communication channel, the centralized approach maximizes spectral efficiency for several operators with complete control over the guarantee of sharing. However, something that is common to all of the proposed studies is to ignore the actual congestion scenario of the individual virtual network segments during the operation of the base station.