This book constitutes the refereed post-conference proceedings of the 23rd International Conference on Distributed and Computer and Communication Networks, DCCN 2020, held in Moscow, Russia, in September 2020. The 54 revised full papers and 1 revised short paper were carefully reviewed and selected from 167 submissions. The papers cover the following topics: computer and communication networks; analytical modeling of distributed systems; and distributed systems applications.

Inhalt
Computer and Communication Networks.- Power domain NOMA without SIC in Downlink CSS-based LoRa Networks.- Simulation-based Analysis of Mobility Models for Wireless UAV-to-X Networks.- Structures and deployments of a flying network using tethered multicopters for emergencies.- Multipath Redundant Network Protocol without Delivery Guarantee.- Modelling Multi-connectivity in 5G NR Systems with Mixed Unicast and Multicast Traffic.- IoT traffic prediction with Neural networks learning based on SDN infrastructure.- Transmission latency analysis in Cloud-RAN.- Resource Queuing System with Preemptive Priority for Performance Analysis of 5G NR Systems.- Redundant Servicing of a Flow of Heterogeneous Requests Critical to the Total Waiting Time During the Multi-path Passage of a Sequence of Info-communication Nodes.- Agriculture management based on LoRa Edge Computing System.- Dynamic Algorithm for Building Future Networks Based on Intelligent Core Network.- Methods and Models for Using Heterogeneous Gateways in the Mesh LPWANs.- Research on Using the AODV Protocol for A LoRa Mesh Network.- On the Algebraic theory of Loop Free Routing.- Queueing system with two unreliable servers and backup server as a model of hybrid communication system.- Flexible Random Early Detection Algorithm for Queue Management in Routers.- Architecture and functionality of the collective operations subnet of the Angara interconnect.- The Model of WBAN Data Acquisition Network Based on UFP.- Development and Investigation of model network IMT2020 with the use of MEC and Voice Assistant technologies.- On overall measure of non-classicality of N-level quantum system and its universality in the large N limit.- Analytical Modeling of Distributed Systems.- Queues with Markovian Arrivals, Phase type Services, Breakdowns, and Repairs.- Statistical Analysis of the End-to-End Delay of Packet Transfers in a Peer-to-Peer Network.- Multidimensional Central Limit Theorem of the Multiclass M/M/1/1 Retrial Queue.- A Retrial Queueing System in which Server Searches to Accumulate Customers for Optimal Bulk Serving.- Approximate Analysis of the Queuing System with Heterogeneous Servers and N-Policy.- Analysis of a Resource-Based Queue with the Parallel Service and Renewal Arrivals.- Two-Phase Resource Queueing System with Requests Duplication and Renewal Arrival Process.- Deep neural networks for emotion recognition.- A simulation approach to reliability assessment of a redundant system with arbitrary input distributions.- Problem of overbooking for a case of a random environment existence.- Optimization of signals processing in nodes of sensor network with energy harvesting and expenditure for admission and transmission.- The Analysis of Resource Sharing for Heterogenous Traffic Streams over 3GPP LTE with NB-IoT Functionality.- Performance Measures of Emergency Services in Case of Overload.- Evaluation and prediction of an optimal control in a processor sharing queueing system with heterogeneous servers.- On exponential convergence of dynamic queueing network and its applications.- Leader Nodes in Communities for Information Spreading.- Sensitivity Analysis of a k -out-of- n :F System Characteristics to Shapes of Input Distribution.- Prioritized Service of URLLC Traffic in Industrial Deployments of 5G NR Systems.- Milestone Developments in Quantum Information and No-Go Theorems.- Practical application of the multi-model approach in the study of complex systems.- Three Approaches in the Study of Recurrent Markovian and Semi-Markovian Processes.- The remaining busy time in a retrial system with unreliable servers.- Diffusion Approximation for Multiserver Retrial Queue with Two-Way Communication.- On A Single Server Queueing Inventory System.- Rare-event simulation for the hitting time of Gaussian processes.- A Queueing Inventory System with Two Channels of Service.- The Analytical Model of Six-Dimensional Linear Dynamic Systems With Arbitrary Piecewise-Constant Parameters.- Evaluation of the end-to-end Delay of a Multiphase Queuing System Using Artificial Neural Networks.- Model of Navigation and Control System of an Airborne Mobile Station.- Modeling D2D-enhanced IoT connectivity: An approach through the simplified analytical framework.- Optimization of SPTA acquisition for a distributed communication network of weather stations.- Distributed Systems Applications.- Crystal-Ball and Magic Wand Combined: Predicting Situations and Making them Happen.- Architectural ML Framework for IoT Services Delivery Based on Microservices.- Applying Machine Learning to Data from a Structured Database in a Research Institute to Support Decision Making.- Generation of metadata for network control.