Research and Improvement of the Performance of Road Transport Wireless Communication Networks

2021 ◽  
Author(s):  
◽  
Arnis Ancāns
Keyword(s):  
Communication Network ◽  
Wireless Network ◽  
Data Transmission ◽  
Data Exchange ◽  
Road Transport ◽  
Transport Systems ◽  
Smart Devices ◽  
Ieee 802.11N ◽  
Doctoral Thesis ◽  
Number Of Customers

Global development trends such as the increase in the number of cars, an increased number of smart devices with wireless network connections, and the rapid increase in the amount of transmitted information promote the demand for higher data exchange speed, mobility, and higher level of connectivity. Consequently, data transmission services are also required when users travel by vehicle. As the number of vehicles increases, the problems related to road safety and traffic flow management need to be addressed as well. These problems underline the need for modern, technically, and economically justified communication solutions for Intelligent Transport Systems (ITS). One of the wireless network technologies that can be used for ITS needs, in particular for providing car passengers with access to the data transmission network, is WLAN IEEE 802.11n/ac. The implementation of such WLAN-based automotive wireless access networks requires several issues to be addressed, mainly related to fast-moving objects. In practice, a two-rank wireless network is used, which can provide access to the Internet. Several testbeds of a two-rank road transport communication network using WLAN IEEE 802.11n and LTE technologies were created and studied in the developed Doctoral Thesis. The change in the traffic characteristics of a two-rank communication network was experimentally assessed using LTE hardware from various manufacturers. The performance of such hybrid communication channels was studied depending on the velocity of mobile customers, the number of customers, and the traffic scenarios used. New relationships characterising the performance of the integrated IEEE 802.11n and LTE road transport networks and describing the dependence of network throughput on the velocity of mobile client movement were obtained. A single-rank IEEE 802.11ac technology-based automotive communications testbed has also been developed and studied within the Doctoral Thesis. An improved handover algorithm based on the IEEE 802.11v protocol has been developed and implemented during the research. The relationships describing the performance of such single-rank automotive communication network were theoretically evaluated.

scholarly journals Evaluating the user experience of acoustic data transmission

2019 ◽  
Vol 24 (5) ◽  
pp. 655-668 ◽  
Author(s):  
Adib Mehrabi ◽  
Antonella Mazzoni ◽  
Daniel Jones ◽  
Anthony Steed
Keyword(s):  
User Experience ◽  
Data Transmission ◽  
Data Exchange ◽  
User Study ◽  
Communication Technologies ◽  
Smart Devices ◽  
Structured Interviews ◽  
Physical Effort ◽  
Acoustic Data ◽  
Communication Methods

AbstractUsers of smart devices frequently need to exchange data with people nearby to them. Yet despite the availability of various communication methods, data exchange between co-located devices is often complicated by technical and user experience barriers. A potential solution to these issues is the emerging technology of device-to-device acoustic data transmission. In this work, we investigate the medium-specific properties of sound as a data exchange mechanism, and question how these contribute to the user experience of sharing data. We present a user study comparing three wireless communication technologies (acoustic data transmission, QR codes and Bluetooth), when used for a common and familiar scenario: peer-to-peer sharing of contact information. Overall, the results show that acoustic data transmission provides a rapid means of transferring data (mean transaction time of 2.4 s), in contrast to Bluetooth (8.3 s) and QR (6.3 s), whilst requiring minimal physical effort and user coordination. All QR code transactions were successful on the first attempt; however, some acoustic (5.6%) and Bluetooth (16.7%) transactions required multiple attempts to successfully share a contact. Participants also provided feedback on their user experience via surveys and semi-structured interviews. Perceived transaction time, physical effort, and connectivity issues. Specifically, users expressed frustration with Bluetooth due to device selection issues, and with QR for the physical coordination required to scan codes. The findings indicate that acoustic data transmission has unique advantages in facilitating information sharing and interaction between co-located users.

scholarly journals CONSTRUCTION OF TRANSPORT COMPANY’S INFORMATION INFRASTRUCTURE

2021 ◽  
pp. 29
Author(s):  
O. SAZONETS
Keyword(s):  
Communication Network ◽  
Graph Theory ◽  
Transport System ◽  
Road Transport ◽  
Optimal Placement ◽  
Practical Significance ◽  
Transport Systems ◽  
Motor Transport ◽  
The Road

The purpose of the article is to study the information aspects of the activities of a motor transport enterprise, to build a communication network within the enterprise, which seeks to fully satisfy the needs of society for the transportation of goods and passengers. Methodology. The study was carried out using graph theory - one of the major branches of discrete mathematics, which is widely used in solving economic and management problems. Using these methods, the minimum path in the information network is found. Results. The quality and timeliness of information coming in the forward and backward directions determines the quality of management of individual objects of the road transport system, as well as the possibility of its coordinated functioning in order to fully satisfy the needs of society for the transportation of goods and passengers. The article examines the introduction of information technologies in transport, which are used at all stages of receiving, storing, processing and transmitting information, should fully ensure the timeliness and high quality of information support when making managerial decisions at all levels of the transport system. The general principles of the construction and functioning of motor transport systems are analyzed through the prism of the information procedures implemented in them and the emerging information flows. It has been established that most of the total volume of information processed in a company can be information necessary for the management and control of logistics operations. Since the road transport system is geographically distributed, a modern specialist must master the methods of spatial analysis based on geoinformation technologies. The development of the information and communication infrastructure of a new transport company, which plans to carry out the transportation of goods by road, has been investigated. The company will provide services such as cargo transportation, freight forwarding services, cargo tracking, cargo insurance, settlement of cargo deliveries, cargo unloading and loading. For the optimal placement of the company's network, graph theory is used. An optimal communication network has been built, connecting various departments of the company, namely, the transportation department, the office, the accounting department, the economic planning department, the legal department, the mechanical department, the communications department, and the personnel department. The scientific novelty of the article is the use of the method for constructing an optimal communication network at a trucking company. The practical significance of the work is that this method can be used at any transport company that begins its activity to build communication links between any departments of the company. In this case, these connections will be optimal.

scholarly journals Assorted Attack Detection for IoT

2020 ◽  
Vol 3 (9) ◽  
pp. 52-55
Author(s):  
Mareeswari Govindaraj
Keyword(s):  
Wireless Network ◽  
Data Transmission ◽  
Social Impact ◽  
Attack Detection ◽  
Smart Devices ◽  
Malicious Behavior ◽  
Security Challenges ◽  
Aodv Protocol ◽  
Regular Manner

While IoT has huge social impact, it comes with a number of key security Challenges. Smart devices are vulnerable to variety of attacks. In this project, we propose the solution to detect all types of attacks in an IoT environment. For this, we initially create the wireless network and then implement mobility and energy in every node of the network. Later we intentionally create some malicious in the network for detecting the attacks. Then, we Perform data transmission between the nodes as a regular manner. For data transmission we used AODV protocol. Finally, we identified the malicious behavior and perform analysis on that collected data and then detected the attacks. It also detected the types of attack occurred.

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