Method to Detect and Eliminate Loops Synchronization in 5g Networks Currently, much attention is focused on the development of standards for fifthgeneration (5G) networks. 5G networks will create a universal environment for the transfer of information and data from various devices, which will have a positive impact on the development of the economy, social sphere and management 2. Network operators are looking for new solutions to efficiently deliver information from subscribers with high transfer rates and minimal delays. Undoubtedly, the main challenge is the organization of time synchronization. However, given that the network will contain a large number of nodes, it can be difficult to build a synchronization network. This article analyzes the need of of network time synchronization organization in 5G networks; it is proposes a new method for loops detection in network time synchronization and is highlights its efficiency use. The main mathematical apparatus used to describe the proposed method is the theory of graphs and matrices.

5G networks: Types of isolation and their parameters in RAN and CN slices Abstract   In this paper, we present a systematic overview of existing isolation techniques in nodes and networks, especially in the Radio Access Network and the Core Network (RAN and CN) to give a background to standardized methods of calculating an isolation level leading to secure EndtoEnd (E2E) slicesxe2x80x99 isolation. We present specific isolation technologies used in layers of 5G RAN and CN. For RAN and CN slices we propose several isolation properties and parameters to enable qualitative and quantitative characterization of the isolation. Finally, we present our approach that makes it possible to establish the common level of isolation for an E2E slice in the 5G network. To illustrate how such an isolation model works in practice, we give numerical examples of calculating an isolation level for simple network slices.