scholarly journals Performance Evaluation of Multi-UAV Network Applied to Scanning Rocket Impact Area

Sensors ◽  
2019 ◽  
Vol 19 (22) ◽  
pp. 4895
Author(s):  
Maurício R. Silva ◽  
Elitelma S. Souza ◽  
Pablo J. Alsina ◽  
Deyvid L. Leite ◽  
Mateus R. Morais ◽  
...  
Keyword(s):  
Communication Network ◽  
Communication Networks ◽  
Network Architecture ◽  
Design Procedure ◽  
Data Communication ◽  
Experimental Tests ◽  
Network Nodes ◽  
Communication Links ◽  
Impact Area ◽  
Multi Uav

This paper presents a communication network for a squadron of unmanned aerial vehicles (UAVs) to be used in the scanning rocket impact area for Barreira do Inferno Launch Center—CLBI (Rio Grande do Norte, Brazil), aiming at detecting intruder boats. The main features of communication networks associated with multi-UAV systems are presented. This system sends information through Wireless Sensor Networks (WSN). After comparing and analyzing area scanning strategies, it presents the specification of a data communication network architecture for a squadron of UAVs within a sensor network using XBee Pro 900HP S3B modules. A brief description is made about the initial information from the construction of the system. The embedded hardware and the design procedure of a dedicated communication antenna to the XBee modules are presented. In order to evaluate the performance of the proposed architecture in terms of robustness and reliability, a set of experimental tests in different communication scenarios is carried out. Network management software is employed to measure the throughput, packet loss and other performance indicators in the communication links between the different network nodes. Experimental results allow verifying the quality and performance of the network nodes, as well as the reliability of the communication links, assessing signal received quality, range and latency.

230MHz Wireless Communication Network Architecture and Design of Power Consumption Information Collection System Based on WiMAX

2014 ◽  
Vol 577 ◽  
pp. 835-840
Author(s):  
Yan Liu ◽  
En Guo Zhu ◽  
Xuan Liu ◽  
Li Jun Dong
Keyword(s):  
Communication Network ◽  
Wireless Communication ◽  
Power Consumption ◽  
Communication Networks ◽  
Software Defined Radio ◽  
Network Architecture ◽  
System Capacity ◽  
Information Collection ◽  
Collection System ◽  
Wireless Communication Network

To improve the performance of power consumption information collection system and to solve the problem of system capacity small and the problem of low data rate, combined with the characteristics of WiMAX technology, the 230MHz wireless communication network of Power consumption information collection system was proposed based on WiMAX; The function and working methods of the communications network was designed. Implementations applicable to power consumption information collection system's key technologies was proposed such as Time division duplex, carrier aggregation, Software-Defined Radio through experimental verification. The results show that the use of this kind of communication networks can improve the data transfer rate, meet the bandwidth requirement, improve the reliability of data transmission and system Capacity and meet the business requirements of power consumption information collection system.

scholarly journals THE AVERAGE LOWER 2-DOMINATION NUMBER OF WHEELS RELATED GRAPHS AND AN ALGORITHM

2016 ◽  
Author(s):  
TUFAN TURACI
Keyword(s):  
Communication Network ◽  
Communication Networks ◽  
Domination Number ◽  
Minimum Cardinality ◽  
Communication Links

The problem of quantifying the vulnerability of graphs has received much attention nowadays, especially in the field of computer or communication networks. In a communication network, the vulnerability measures the resistance of the network to disruption of operation after the failure of certain stations or communication links. If we think of a graph as modeling a network, the average lower 2-domination number of a graph is a measure of the graph vulnerability and it is defined by γ2av(G)=1|V(G)|∑v∈V(G)γ2v(G), where the lower 2-domination number, denoted by γ2v(G), of the graph G relative to v is the minimum cardinality of 2-domination set in G that contains the vertex v. In this paper, the average lower 2-domination number of wheels and some related networks namely gear graph, friendship graph, helm graph and sun flower graph are calculated. Then, we offer an algorithm for computing the 2-domination number and the average lower 2-domination number of any graph G.

scholarly journals Fault Diagnosis Knowledge Reasoning of Switching Network in Distributed Generation Based on Petri Net

2021 ◽  
Author(s):  
Ziquan Liu ◽  
Xueqiong Zhu ◽  
Jingtan Ma ◽  
Hui Fu ◽  
Ke Zhao ◽  
...  
Keyword(s):  
Communication Network ◽  
Fault Diagnosis ◽  
Distributed Generation ◽  
Petri Net ◽  
Network Architecture ◽  
Data Communication ◽  
Switching Network ◽  
Power Stations ◽  
Knowledge Reasoning ◽  
Data Communication Network

Telephone network based on IMS technology has been widely applied in power production and dispatching communication, especially in distributed power stations. Analysis and positioning failure of IMS network is arduous, because it’s dependent on IP data communication network. In this paper, we first introduced IMS switching network architecture and distributed generation communication network architecture, analyzed and summarized all kinds of network malfunction. Combining typical IMS network fault connection relations, we introduced an improved Petri net fault handling model and reasoning method. The diagnosis and positioning results could reflect the defects of equipment logic functions. This method on fault diagnosis and location of substation network has been proved to be effective through practical application.

scholarly journals COMMUNICATION NETWORK AND QOS EVALUATION FOR FORMATION CONTROL OF UNMANNED SURFACE VEHICLES

Brodogradnja ◽  
2020 ◽  
Vol 71 (4) ◽  
pp. 19-37
Author(s):  
Shaoze Zhang ◽  
◽  
Xianbo Xiang ◽  
Shaolong Yang ◽  
◽  
...  
Keyword(s):  
Communication Network ◽  
Communication Networks ◽  
Network Architecture ◽  
Formation Control ◽  
Ad Hoc ◽  
Channel Model ◽  
Remote Communication ◽  
Unmanned Surface Vehicles ◽  
Future Work ◽  
Qos Evaluation

The main purpose of this article is to design efficient communication networks for the formation control of multiple distributed Unmanned Surface Vehicles (USVs). First, a hybrid communication network architecture, combining remote communication and wireless Ad hoc network technology is proposed. Second, an improved Low Energy Adaptive Clustering Hierarchy (LEACH) protocol is adopted to prolong the life cycle of the communication network of the USV fleet. Subsequently, some QoS indicators of the USV communication network are evaluated by establishing wireless network channel model and Signal to Interference and Noise Ratio (SINR) model. In particular, the packet error ratio, average time delay and connectivity under different formation architecture are investigated. Finally, some discussions and future work on the QoS of the USV communication network are concluded.

Research on Train Control System Based on Communications

2012 ◽  
Vol 253-255 ◽  
pp. 1427-1430
Author(s):  
Lin Na He
Keyword(s):  
Communication Network ◽  
Control System ◽  
Communication Technology ◽  
Network Architecture ◽  
Open Data ◽  
Data Communication ◽  
System Structure ◽  
Train Control ◽  
Train Control System ◽  
Data Communication Network

This paper introduces communication based train contrl (CBTC) technology, focusing on the concept of the CBTC , the CBTC system structure, and the CBTC system basic principle. This paper presents the CBTC system is composed of two parts by the train control system and wireless information transmission, the CBTC system using wireless communication technology to achieve real-time bi-directional communication in the train and the trackside equipment, through an open data communication network. Finally, data communication subsystem network architecture in the CBTC system has been studied.

Deployment and Success Factors for the Mobile Internet

2011 ◽  
Vol 2 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Krassie Petrova ◽  
Raymond Yiwen Huang
Keyword(s):  
Communication Networks ◽  
Mobile Networks ◽  
Network Architecture ◽  
Success Factors ◽  
Data Communication ◽  
Mobile Internet ◽  
Mobile Service ◽  
Wireless Internet ◽  
Fixed Line ◽  
The Impact

The mobile Internet is a fast-growing technology that provides access to the traditional stationary (fixed-line) Internet from devices connected to mobile communication networks. It is predicted that the convergence between mobile networks and the fixed-line Internet will be a core feature in the next generation network architecture, achieving fast ‘anywhere’ Internet access and global mobility management. Applying a case study approach, this paper reviews the New Zealand mobile Internet market mix, competition, and mobile service provision. The key mobile Internet deployment requirements are determined and analyzed in order to identify a set of mobile Internet critical success factors and to investigate the impact of the shift from fixed-line to mobile and wireless Internet data communication infrastructure.

scholarly journals An architecture for power substations communication networks based on SDN and virtualization paradigms

2021 ◽  
Author(s):  
Juan Felipe Botero Vega ◽  
Alexander Leal Piedrahita
Keyword(s):  
Communication Networks ◽  
Network Architecture ◽  
New Technologies ◽  
Network Virtualization ◽  
Data Communication ◽  
Electrical Energy ◽  
New Research ◽  
Grid Operation ◽  
Transmission And Distribution ◽  
Power Substations

The deployment of infrastructures related to the Smart Grid concept introduces data communication networks in the grid operation systems (control, communication, and monitoring). The implementation of data communication networks facilitates and improves the efficiency of the tasks related to the generation, transmission, and distribution of electrical energy. In turn, network management is being permeated by new technologies such as Software Defined Networking (SDN) and network virtualization, that promote automation and innovation of communication networks aiming to overcome the lack of flexibility and the difficulties to evolve that are present in current communication networks. In this context, this paper proposes a reconceptualization of the power substations communications network architecture based on the IEC 61850 standard. Here, we present a complete view of the Smart Solution for Substation Networks (S3N) architecture, which allows modeling the future power substations communication networks taking advantage of the benefits introduced by SDN and virtualization technologies. In addition, in order to provide a better understanding of the challenges arising in this area, and to generate new research interest in this field, a review of several studies oriented to determine the feasibility of incorporating SDN as a key element to improve the management and operation of the power substations communication networks is presented.

Detection and Ignoring of Blackhole Attack in Vanets Networks

2016 ◽  
Vol 6 (2) ◽  
pp. 1-10
Author(s):  
Chaima Bensaid ◽  
Sofiane Boukli Hacene ◽  
Kamel Mohamed Faraoun
Keyword(s):  
Black Hole ◽  
Communication Networks ◽  
Network Performance ◽  
Vehicular Networks ◽  
Data Communication ◽  
Main Idea ◽  
Black Hole Attack ◽  
Malicious Nodes ◽  
The Future ◽  
Detailed Simulation

Vehicular networks or VANET announce as the communication networks of the future, where the mobility is the main idea. These networks should be able to interconnect vehicles. The optimal goal is that these networks will contribute to safer roads and more effective in the future by providing timely information to drivers and concerned authorities. They are therefore vulnerable to many types of attacks among them the black hole attack. In this attack, a malicious node disseminates spurious replies for any route discovery in order to monopolize all data communication and deteriorate network performance. Many studies have focused on detecting and isolating malicious nodes in VANET. In this paper, the authors present two mechanisms to detect this attack. The main goal is detecting as well as bypass cooperative black hole attack. The authors' approaches have been evaluated by the detailed simulation study with NS2 and the simulation results shows an improvement of protocol performance.

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