Andrey Larionov

Design concepts of an application platform for traffic law enforcement and vehicles registration comprising RFID technology

The article describes design concepts of a novel application platform for vehicles identification and traffic rules violations registration. The platform adopts different equipment including RFID-readers, video-cameras and speed-radars. The platform supports both wired and wireless interfaces for data transmission and can provide police stations with up to date data about traffic rules violators. Design background and key features of the platform are presented. We also discuss the platform internal structure, key functional elements and protocols. Finally, we provide some results on testing the system and its key components.

Methods of Performance Evaluation of Broadband Wireless Networks Along the Long Transport Routes

This paper presents the description of the method of performance evaluation and assessment of main characteristics of broadband wireless networks with linear topology, which is based on a model of stochastic multiphase queueing systems with correlated MAP input flows and a cross-traffic. The results of analytical calculations for the networks of small dimension are given. A simulation model for assessment of performance characteristics of large-scale wireless networks with linear topology is developed.

Design and Scheduling in 5G Stationary and Mobile Communication Systems Based on Wireless Millimeter-Wave Mesh Networks

The paper presents the concept of local and metropolitan wireless mesh networks operating in millimeter-wave band. These self-organizing networks may be used as the high-throughput backbones for emerging 5G communication systems, as well as standalone networks providing extensive QoS, mobility, reliability and ultra-high throughputs for the connected users. The paper observes the current state and the prospects of the development of the millimeter-wave mesh networks. The paper outlines the network logical structure including MAC level design, routing and resource allocation. The problem of delay-optimal scheduling within Spatial TDMA is formulated, and a simple fast algorithm for scheduling is proposed. The experimental results provided prove the algorithm allows to utilize the network resources at very high rates while building scheduling sufficient for delay-critical applications.

A Novel Approach for Scheduling in STDMA for High-Throughput Backbone Wireless Mesh Networks Operating within 60-80 GHz

This work proposes a novel approach to centralized scheduling in Spatial TDMA (STDMA) for a new class of high-throughput backbone broadband wireless mesh networks operating within 60-80 GHz. The approach is based on granted-to-requested ratio maxmin optimization criterion. During a research work, a centralized gradient algorithm for an optimal schedule construction was developed and its polynomial convergence was proven. The paper outlines key features of the high-throughput wireless mesh networks class under development, contains the scheduling problem formulation and introduces the polynomial algorithm for optimal resource allocation.

An Open Queueing Network with a Correlated Input Arrival Process for Broadband Wireless Network Performance Evaluation

In the paper characteristics of an open queueing network with correlated input Markovian arrival processes and phase type distribution of service time in the nodes are studied. The developed methodology is used for the performance evaluation of broadband wireless networks with linear topology. A comparison study of numeric results of analytic modelling and simulation is carried out. To study open queueing networks with MAP input a pyQuMo library has been developed using Python 3 language. The library provides a means for model description, model properties computations by taking advantage of an analytical approach, and simulation as well as results visualisation.

Applying graph-theoretic approach for time-frequency resource allocation in 5G MmWave backhaul network

The article deals with the options of building a 5G backbone network based on a millimeter-wave E-band mesh network. The possibility of the use of MIMO technology for the formation of simultaneous several divergent beams is described, as well as the possibility of frequency duplexing, which allows each mesh-network station to perform simultaneous reception and transmission. The super-frame structure and STDMA media access scheme are considered for the developing mesh-network. The solution of the problem of distribution of time-frequency resources in the backbone E-band networks using the graph approach is described and a heuristic algorithm to improve the efficiency of distribution is presented.

UHF RFID in Automatic Vehicle Identification: Analysis and Simulation

In this paper, the application of UHF RFID in automatic vehicles identification is studied by the means of a new simulation framework. The system under study consists of the stationary readers with antennas mounted over the road lanes and vehicles license plates equipped with passive EPC Class 1 Generation 2 UHF RFID tags. The simulation includes protocol settings, antennas parameters, and propagation media conditions. Propagation analysis considers Doppler shift to compute the path loss of moving tags properly. The estimations of an inventory round duration, the number of rounds the tag participates in and the tag identification probability are provided. The paper presents vehicles identification probabilities computed for different protocol settings and movement speeds. In particular, it was shown that a vehicle could be identified with 0.9 probability by EPC values only when the vehicle speed is 120 km/h or even more. If the vehicle is identified with both EPC and TID banks values, the same 0.9 probability is achievable when the vehicle speed is under 90 km/h. The results of the simulation coincide with the experiment results involving the city buses.

Optimization of Topological Structure of Broadband Wireless Networks Along the Long Traffic Routes

The paper deals with a relevant problem of optimal placement of base stations in broadband wireless networks along the long highways. This problem is formulated in terms of integer linear programming. The exact solution of the problem as well as the high-speed heuristic algorithm are presented.

Methods for architecture synthesis of broadband wireless networks with linear topology

A novel iterative algorithm for designing the architecture of broadband wireless networks along the long highways is considered. The mathematical problems were formulated and solved for every step of the iterative method. An example is given of designing a broadband wireless network along the highways in one of the regions of Russia.

GWM-MAC protocol for high-throughput backbone wireless mesh networks operating within 60-80 GHz

This paper spotlights key design features of a novel Gigabit Wireless Mesh MAC protocol (GWM-MAC) for a new class of high-throughput backbone broadband wireless mesh networks operating in 60-80 GHz. The proposed protocol is based on the Spatial TDMA channel access scheme and defines several operating modes. The protocol is designed to serve the needs of a heavy-loaded backbone mesh network with a volatile traffic. GWM-MAC is suitable for transmitting data flows via multihop paths as well as for broadcasts and single-hop communications. For multihop flows-oriented communications the granted-to-requested ratio maxmin resource allocation criterion is utilized allowing fair schedules building in case of the large number of flows with significantly varying resource needs. The proposed protocol is very flexible and can be dynamically configured to serve the actual network needs.