Journal articles on the topic '220107 Wireless technologies, networks and services'
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Li, Jin, Fatos Xhafa, and Jian Weng. "Emerging services and technologies in wireless networks." Journal of High Speed Networks 21, no. 2 (July 10, 2015): 81–82. http://dx.doi.org/10.3233/jhs-150511.
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Brida, Peter, Ondrej Krejcar, Ali Selamat, and Attila Kertesz. "Smart Sensor Technologies for IoT." Sensors 21, no. 17 (September 1, 2021): 5890. http://dx.doi.org/10.3390/s21175890.
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Abbasi, Munir, and Lampros K. Stergioulas. "Hybrid Wireless Networks for E-Learning and Digital Literacy." International Journal of Digital Literacy and Digital Competence 2, no. 2 (April 2011): 40–52. http://dx.doi.org/10.4018/jdldc.2011040104.
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Today, satellite communication networks are being integrated into the infrastructure of modern Terrestrial communication networks and becoming popular for the delivery of educational content and data, as well as education-centric services, including information, tele-conferencing, entertainment, or ‘edutainment’ services. With fresh demand for new services and applications, it is becoming essential that wireless network architecture seamlessly interoperate with new and existing technologies, protocols and standards. This paper presents recent work on the use of hybrid wireless network infrastructures for delivering tele-education and e-learning applications to remote communities by combining a variety of satellite, terrestrial and wireless technologies, and provides the results from live scenarios carried out employing various methods of interoperability testing. The analysis of the results examines a number of different issues such as delay, jitter, packet loss, latency, throughput measurement, and bandwidth. By combining satellite and terrestrial (wireless) technologies, full coverage and high capacity can be achieved for true broadband services for delivering educational content. The interoperability among such diverse networks imposes a number of challenges regarding service provision and management.
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Dzemydienė, Dalė, Mindaugas Kurmis, and Vilija Baikštienė. "Possibilities to Support Heterogeneous Mobile Services in Vehicle Communication Networks." Informacijos mokslai 90 (December 28, 2020): 80–95. http://dx.doi.org/10.15388/im.2020.90.51.
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Research on the provision of heterogeneous services in the field of intelligent transport is of great interest in the rapidly changing infrastructure of road transport. In particular, the availability of such services has increased through the use of wireless technologies and communication tools. The current development of Information Communication Technologies (ICT) and the integration of intelligent transport platforms and service systems make it possible to significantly improve road safety and reduce the likelihood of road accidents. However, the delivery of mobile-smart services requires the development of a rather sophisticated infrastructure to support multicast services. The purpose of this scientific article is to analyze the data transmission capabilities for heterogeneous services while ensuring road safety. The paper deals with the tasks of evaluating the possibilities of integrating such mobile services into the infrastructure of motor vehicles. Measuring bandwidth by enabling multicast services on the base of Ad-hoc wireless networks becomes an important task. The demonstrated results illustrate the capabilities of wireless networks by simulating these services in a transport service generating environment. The paper demonstrates that high-quality heterogeneous services require new wireless network interaction protocols, such as a session initiation protocol (SIP), GPRS functionality, routing protocols, and channel access to provide a large number of supportive service components.
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Dzemydienė, Dalė, Mindaugas Kurmis, Vilija Baikštienė, and Ramūnas Dzindzalieta. "Possibilities to Support Heterogeneous Mobile Services in Vehicle Communication Networks." Informacijos mokslai 85 (October 28, 2019): 176–92. http://dx.doi.org/10.15388/im.2019.85.22.
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Research on the provision of heterogeneous services in the field of intelligent transport is of great interest in the rapidly changing infrastructure of road transport. In particular, the availability of such services has increased through the use of wireless technologies and communication tools. The current development of Information Communication Technologies (ICT) and the integration of intelligent transport platforms and service systems make it possible to significantly improve road safety and reduce the likelihood of road accidents. However, the delivery of mobile-smart services requires the development of a rather sophisticated infrastructure to support multicast services. The purpose of this scientific article is to analyze the data transmission capabilities for heterogeneous services while ensuring road safety. The paper deals with the tasks of evaluating the possibilities of integrating such mobile services into the infrastructure of motor vehicles. Measuring bandwidth by enabling multicast services on the base of Ad-hoc wireless networks becomes an important task. The demonstrated results illustrate the capabilities of wireless networks by simulating these services in a transport service generating environment. The paper demonstrates that high-quality heterogeneous services require new wireless network interaction protocols, such as a session initiation protocol (SIP), GPRS functionality, routing protocols, and channel access to provide a large number of supportive service components.
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Abumarshoud, Hanaa, Cheng Chen, Mohamed Sufyan Islim, and Harald Haas. "Optical wireless communications for cyber-secure ubiquitous wireless networks." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 476, no. 2242 (October 2020): 20200162. http://dx.doi.org/10.1098/rspa.2020.0162.
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Wireless connectivity is no longer limited to facilitating communications between individuals, but is also required to support diverse and heterogeneous applications, services and infrastructures. Internet of things (IoT) systems will dominate future technologies, allowing any and all devices to create, share and process data. If artificial intelligence resembles the brain of IoT, then high-speed connectivity forms the nervous system that connects the devices. For IoT to safely operate autonomously, it requires highly secure and reliable wireless links. In this article, we shed light on the potential of optical wireless communications to provide high-speed secure and reliable ubiquitous access as an enabler for fifth generation and beyond wireless networks.
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Skianis, Charalabos, Fabrizio Granelli, Periklis Chatzimisios, Christos Verikoukis, and Michael Devetsikiotis. "Lightweight Mobile and Wireless Systems: Technologies, Architectures, and Services." Journal of Computer Systems, Networks, and Communications 2010 (2010): 1–2. http://dx.doi.org/10.1155/2010/420806.
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Kaleem, Faisal, Abolfazl Mehbodniya, Kang K. Yen, and Fumiyuki Adachi. "A Fuzzy Preprocessing Module for Optimizing the Access Network Selection in Wireless Networks." Advances in Fuzzy Systems 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/232198.
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A heterogeneous wireless network is characterized by the presence of different wireless access technologies that coexist in an overlay fashion. These wireless access technologies usually differ in terms of their operating parameters. On the other hand, Mobile Stations (MSs) in a heterogeneous wireless network are equipped with multiple interfaces to access different types of services from these wireless access technologies. The ultimate goal of these heterogeneous wireless networks is to provide global connectivity with efficient ubiquitous computing to these MSs based on the Always Best Connected (ABC) principle. This is where the need for intelligent and efficient Vertical Handoffs (VHOs) between wireless technologies in a heterogeneous environment becomes apparent. This paper presents the design and implementation of a fuzzy multicriteria based Vertical Handoff Necessity Estimation (VHONE) scheme that determines the proper time for VHO, while considering the continuity and quality of the currently utilized service, and the end-users' satisfaction.
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Reyes-Menendez, Ana, Pedro R. Palos-Sanchez, Jose Ramon Saura, and Felix Martin-Velicia. "Understanding the Influence of Wireless Communications and Wi-Fi Access on Customer Loyalty: A Behavioral Model System." Wireless Communications and Mobile Computing 2018 (December 2, 2018): 1–16. http://dx.doi.org/10.1155/2018/3487398.
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New technologies offer new possibilities to better understand complex consumer behavior points of sale. The data obtained using wireless communications and Wi-Fi services available in restaurants and catering companies make it possible to acquire in-depth knowledge on consumer behavior complexity. In the present study, the PLS-SEM analysis was used to analyze the impact of free wireless communications and Wi-Fi access on customer loyalty. Our results demonstrate that client satisfaction with wireless communications and Wi-Fi access networks services has a direct impact on customer loyalty. Therefore, wireless communications and Wi-Fi networks and technologies available at the points of sale should be updated in order to better meet customers’ expectations.
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Tirmizi, Syed Bilal Raza, Yunfei Chen, Subhash Lakshminarayana, Wei Feng, and Aziz A. Khuwaja. "Hybrid Satellite–Terrestrial Networks toward 6G: Key Technologies and Open Issues." Sensors 22, no. 21 (November 6, 2022): 8544. http://dx.doi.org/10.3390/s22218544.
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Future wireless networks will be required to provide more wireless services at higher data rates and with global coverage. However, existing homogeneous wireless networks, such as cellular and satellite networks, may not be able to meet such requirements individually, especially in remote terrain, including seas and mountains. One possible solution is to use diversified wireless networks that can exploit the inter-connectivity between satellites, aerial base stations (BSs), and terrestrial BSs over inter-connected space, ground, and aerial networks. Hence, enabling wireless communication in one integrated network has attracted both the industry and the research fraternities. In this work, we provide a comprehensive survey of the most recent work on hybrid satellite–terrestrial networks (HSTNs), focusing on system architecture, performance analysis, design optimization, and secure communication schemes for different cooperative and cognitive HSTN network architectures. Different key technologies are compared. Based on this comparison, several open issues for future research are discussed.
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Agarwal, Arun, Chandan Mohanta, and Gourav Misra. "Principle of 6G Wireless Networks: Vision, Challenges and Applications." December 2021 3, no. 4 (January 13, 2022): 243–58. http://dx.doi.org/10.36548/jitdw.2021.4.001.
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The 5G mobile communication has now become commercially available. Furthermore, research across the globe has begun to improve the system beyond 5G and it is anticipated that 6G will deliver higher quality services and energy efficiency than 5G. The mobile network architecture needs to be redesigned to meet the requirements of the future. In the wake of the commercial rollout of the 5G model, both users and developers have realized the limitations of the system when compared to the system's original premise of being able to support the vast applications of connected devices. The article discusses the related technologies that can contribute to a robust and seamless network service. An upheaval in the use of vast mobile applications, especially those powered and managed by AI, has opened the doors to discussion on how mobile communication will evolve in the future. 6G is expected to go beyond being merely a mobile internet service provider to support the omnipresent AI services that will form the rock bed of end-to-end connected network-based devices. Moreover, the technologies that support 6G services and comprehensive research that enables this level of technical prowess have also been identified here. This paper presents a collective wide-angle vision that will facilitate a better understanding of the features of the 6G system.
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Liu, Qi, Rongyi Hu, and Shan Liu. "A Wireless Location System in LTE Networks." Mobile Information Systems 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/6160489.
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Personal location technologies are becoming important with the rapid development of Mobile Internet services. In traditional cellular networks, the key problems of user location technologies are high-precision synchronization among different base stations, inflexible processing resources, and low accuracy positioning, especially for indoor environment. In this paper, a new LTE location system in Centralized Radio Access Network (C-RAN) is proposed, which makes channel and location measurement more available, allocation of baseband processing resources more flexible, and location service capability opening. The location system contains more than two antenna clusters, and each of them gets time-difference-of-arrival (TDOA) of sounding reference signals (SRSs) from different antennas. Then, based on data provided by location measurement units (LMUs), the location information server calculates TDOAs and derives the users’ position. Furthermore, a new location algorithm is raised which can achieve distributed antennas collaboration and centralized location computing. And an improved optimized algorithm with the best TDOA selection is proposed. Finally, simulations are given out to verify the efficiency of the proposed algorithm in this LTE location system.
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Owczarek, Piotr, and Piotr Zwierzykowski. "Metrics in routing protocol for wireless mesh networks." Image Processing & Communications 18, no. 4 (December 1, 2013): 7–20. http://dx.doi.org/10.2478/v10248-012-0089-9.
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Abstract The interest in services offered by wireless network has been growing for many years. It has encouraged the development of wireless technologies. New solutions are able to satisfy the ever-increasing demands concerning wireless services. It is also evident in the diversification of quality assessment methods employed with reference to connections used in such networks. One of the basic elements used in connection quality assessment are metrics. The use of metrics is directly linked to the type of the routing protocol applied in a given network. The selection of a given routing protocol is often determined by its specific properties that might be advantageous in a certain network type, or that are important in terms of the type or scope of services provided. Therefore, it is easy to identify a relationship between metrics and the area of application of a given routing protocol. The significance and diversity of metrics is also reflected inWireless Mesh Networks (WMNs). The proposed paper presents a review of the current state-of-the-art routing metrics for Ad-hoc and WMN networks
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Elmagzoub, M. A., Asadullah Shaikh, Abdullah Alghamdi, and Khairan Rajab. "A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks." Electronics 9, no. 12 (November 28, 2020): 2014. http://dx.doi.org/10.3390/electronics9122014.
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Next-generation access/mobile networks have set high standards in terms of providing wireless services at high data rates in order to keep up with the vast demands for other mobility and multiple services. Wireless-optical broadband access network (WOBAN) technology, also known as fibre-wireless (FiWi), has uncovered incredible opportunities for the future of next-generation networks because it gets the best of both domains: huge bandwidth provided by the optical fibre and high ubiquity of the wireless domain. The objective of FiWi networks is to integrate the high data rate and long reach provided by optical networks and the ubiquity and mobility of wireless networks, with the target to decrease their expense and complexity. Multiple-input–multiple-output (MIMO) is an inevitable technique for most of the new mobile/wireless networks that are driven by the huge data rates required by today’s users. Consequently, to construct any FiWi system for next-generation (NG) access/broadband networks, an MIMO technique has to be considered. This article presents a comprehensive, contemporary review of the latest subsystems, architectures and integrated technologies of MIMO wireless signals backhauling using optical fibre or fibre access networks, such as passive optical networks (PONs). An overview for FiWi, PONs and MIMO wireless systems is provided. In addition, advanced techniques of accommodating the MIMO wireless signals over optical fibre are explained and compared. Different types of wireless MIMO signals over fibre, such as 5G, WiFi and related transport technologies, are reviewed. Moreover, future research trends are also discussed.
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Kim, So-Yong, Cheol-Min Kim, and Seok-Joo Koh. "Framework of IoT Services over Unidirectional Visible Lights Communication Networks." Electronics 9, no. 9 (August 20, 2020): 1349. http://dx.doi.org/10.3390/electronics9091349.
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Visible Light Communication (VLC) has been noted as an emerging technology for communications in wireless local area networks. VLC provides some distinctive features over the conventional wireless access technologies, such as Wi-Fi, Bluetooth, or ZigBee. The most prominent feature of VLC is that it can provide more exact location information, since it is based on a particular light. In addition, VLC can reduce the frequency interferences from numerous wireless channels, since it uses a completely different radio frequency channel from the conventional wireless access technologies. Thus, VLC can be used for Internet-of-Things (IoT) services. Nevertheless, up to now, not enough studies on how to provide IoT services over VLC networks have been conducted. In this paper, we propose a framework to provide IoT services in VLC networks. In particular, we will consider the unidirectional VLC network, in which the downlink channel from the VLC transmitter to the VLC receiver is given by using VLC communication, whereas the uplink channel from the VLC receiver to the VLC transmitter is implemented by using another wireless access technology, such as Wi-Fi. This is because most of the VLC receivers, such as mobile phones, cannot support the uplink VLC communication. Based on the framework of IoT services over unidirectional VLC, in this paper, we also propose the VLC–IoT protocol (VIP) which is an application layer protocol for data transport with the session management functionality that can be used to effectively provide IoT services among IoT servers, VLC transmitters and VLC receivers in the networks. The proposed VIP protocol is implemented by using the Cooja simulator. For performance analysis, the proposed scheme is compared with the existing CoAP-based scheme that does not provide the session management. From a variety of simulation experiments, we see that the proposed scheme can provide lower data transmission and handover delays, compared to the existing scheme.
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Khaytbaev, A. E., and A. M. Eshmuradov. "APPLICATIONS OF NEURAL NETWORK TECHNOLOGIES IN WIRELESS SENSOR NETWORKS." Vestnik komp'iuternykh i informatsionnykh tekhnologii, no. 195 (September 2020): 46–51. http://dx.doi.org/10.14489/vkit.2020.09.pp.046-051.
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The purpose of the article is to study the possibilities of improving the efficiency of the sensory network management technique, using the neural network method. The presented model of the wireless sensor network takes into account the charging of the environment. The article also tests the hypothesis of the possibility of organizing distributed computing in wireless sensor networks. To achieve this goal, a number of tasks are allocated: review and analysis of existing methods for managing BSS nodes; definition of simulation model components and their properties of neural networks and their features; testing the results of using the developed method. The article explores the major historical insights of the application of the neural network technologies in wireless sensor networks in the following practical fields: engineering, farming, utility communication networks, manufacturing, emergency notification services, oil and gas wells, forest fires prevention equipment systems, etc. The relevant applications for the continuous monitoring of security and safety measures are critically analyzed in the context of the relevancy of specific decisions to be implemented within the system architecture. The study is focused on the modernization of methods of control and management for the wireless sensor networks considering the environmental factors to be allocated using senor systems for data maintenance, including the information on temperature, humidity, motion, radiation, etc. The article contains the relevant and adequate comparative analysis of the updated versions of node control protocols, the components of the simulation model, and the control method based on neural networks to be identified and tested within the practical organizational settings.
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Khaytbaev, A. E., and A. M. Eshmuradov. "APPLICATIONS OF NEURAL NETWORK TECHNOLOGIES IN WIRELESS SENSOR NETWORKS." Vestnik komp'iuternykh i informatsionnykh tekhnologii, no. 195 (September 2020): 46–51. http://dx.doi.org/10.14489/vkit.2020.09.pp.046-051.
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The purpose of the article is to study the possibilities of improving the efficiency of the sensory network management technique, using the neural network method. The presented model of the wireless sensor network takes into account the charging of the environment. The article also tests the hypothesis of the possibility of organizing distributed computing in wireless sensor networks. To achieve this goal, a number of tasks are allocated: review and analysis of existing methods for managing BSS nodes; definition of simulation model components and their properties of neural networks and their features; testing the results of using the developed method. The article explores the major historical insights of the application of the neural network technologies in wireless sensor networks in the following practical fields: engineering, farming, utility communication networks, manufacturing, emergency notification services, oil and gas wells, forest fires prevention equipment systems, etc. The relevant applications for the continuous monitoring of security and safety measures are critically analyzed in the context of the relevancy of specific decisions to be implemented within the system architecture. The study is focused on the modernization of methods of control and management for the wireless sensor networks considering the environmental factors to be allocated using senor systems for data maintenance, including the information on temperature, humidity, motion, radiation, etc. The article contains the relevant and adequate comparative analysis of the updated versions of node control protocols, the components of the simulation model, and the control method based on neural networks to be identified and tested within the practical organizational settings.
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Easa,, Haider, Musa Wali, and Adheed Sallomi. "Cellular Networks Pollution Reduction." Al-Kitab Journal for Pure Sciences 2, no. 2 (December 30, 2018): 84–95. http://dx.doi.org/10.32441/kjps.02.02.p6.
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The potential of adaptive antennas to optimize the wireless network performance make it one of the promising technologies that can face the increased demand for wireless communications services with the limited available bandwidth. Adaptive antennas have the ability to steer their main lobe in the direction of interest and placing nulls in the direction of interference. This can result in co-channel interference minimization, maximizing Signal to Interference Ratio (SIR) and then improve the receiver sensitivity. In this paper, the base-station sensitivity improvement and its effect on the mobile transmit power were investigated at different scenarios. Results show that using adaptive antenna yields in RF pollution reduction.
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Durresi, Arjan, Mimoza Durresi, and Leonard Barolli. "Secure Authentication in Heterogeneous Wireless Networks." Mobile Information Systems 4, no. 2 (2008): 119–30. http://dx.doi.org/10.1155/2008/135848.
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The convergence of cellular and IP technologies has pushed the integration of 3G and WLAN networks to the forefront. Gaining secure access to 3G services from 802.11 WLANs is a primary challenge for this new integrated wireless technology. Successful execution of 3G security algorithms can be limited to a specified area by encrypting a user's authentication challenge with spatial data defining his visited WLAN. With limited capacity to determine a user's location only to within a current cell and restrictions on accessing users' location due to privacy, 3G operators must rely on spatial data sent from visited WLANs to implement spatial authentication control. A potential risk is presented to 3G operators since no prior relationship or trust may exist with a WLAN owner. Algorithms to quantify the trust between all parties of 3G-WLAN integrated networks are presented to further secure user authentication. Ad-hoc serving networks and the trust relationships established between mobile users are explored to define stronger algorithms for 3G – WLAN user authentication.
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Wang, Rong, Jingye Cai, Xiang Yu, and SiRui Duan. "Disruptive Technologies and Potential Cellular Architecture for 5G." Open Electrical & Electronic Engineering Journal 9, no. 1 (October 22, 2015): 512–17. http://dx.doi.org/10.2174/1874129001509010512.
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The 5G wireless communication system is a new generation mobile communication system beyond 2020. 5GNow is still in the exploration stage. There are some shortcomings in LTE and LTE-A, such as strict synchronism, latency in crowded areas, energy consumption, and challenging in IoT, etc. The 5G wireless networks is a will consider satisfying better user experience, manifoldness of services, M2M of IoT. In this paper, we discuss some promising key technologies and conclude 5G potential cellular architecture.
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Dzhuliy, V. M., A. V. Krasnik, E. S. Lenkov, M. M. Okhramovich, and L. O. Ryaba. "STUDY OF PROBLEMS OF CONSTRUCTION OF SAFE SENSOR NETWORKS." Collection of scientific works of the Military Institute of Kyiv National Taras Shevchenko University, no. 75 (2022): 51–65. http://dx.doi.org/10.17721/2519-481x/2022/75-06.
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The research of problems of construction of wireless sensor networks is carried out in the work, the main stage of their decision is development of models of the description of a sensor network and the corresponding methods, technologies of maintenance of necessary parameters of quality of functioning of a sensor network. The study involves the consideration of basic technologies and standards in which there is an opportunity to implement the creation of wireless sensor networks. The basis of wireless sensor networks are communication channels organized between network elements using appropriate wireless technology. The main tasks of building wireless sensor networks: determining traffic parameters; determining the list of services; development or selection of a network model; determination of network functioning indicators; solving the problem of compromise between the quality of operation, traffic and resources. A number of wireless networking technologies are widespread in corporate networks, use an unlicensed frequency band, and in private networks, which allows their use in a number of tasks, due to the density of devices that support them and the availability of technology. A number of technologies do not support the functions of self-organization of the communication network. Such mechanisms can be implemented using software and related protocols at the network level. Existing technologies have the ability to organize communication from tens to tens of thousands of meters. For specific applications, it is one of the essential factors in choosing the appropriate technology. The probability of connectivity in wireless sensor networks depends on the structure and parameters that determine the network: characteristics of the service area (volume, flat, configuration, geometric dimensions), number of network nodes, characteristics of communication capabilities of network elements, antenna patterns, standards and protocols, communication range, transmitter power), features of the involved routing protocols. Features of providing connectivity in wireless sensor networks lie in the possibility of using gateways built using various technologies, which can significantly expand the capabilities of wireless networks in increasing the likelihood of connectivity. A feature of the construction of wireless sensor networks are significant differences in traffic servicing in the networks of different technologies used. Indicators of the quality of wireless networks, such as bandwidth, delay, probability of loss are interdependent and show how effectively the sensor network works. When you change one of the performance indicators of wireless sensor networks, it affects other quality indicators.
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Nicholls, Rob. "Spectrum management issues for heterogeneous networks in commons spectrum." info 18, no. 4 (June 13, 2016): 1–11. http://dx.doi.org/10.1108/info-02-2016-0010.
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Purpose The purpose of this paper is to analyse some of the spectrum management policy implications of an evolving set of wireless technologies. Specially, deployment of heterogeneous networks (HetNets) as part of the rollout of long-term evolution networks and their expected use as the heart of next-generation services raises the question as to whether such networks should lead to any spectrum management policy changes. Design/methodology/approach The paper describes the use and variety of HetNets when using licensed and unlicensed or commons spectrum. Findings The paper demonstrates that there is little need to change current spectrum licensing regimes to deal with these networks in a licensed spectrum. However, it also shows that the deployment of HetNets other than WiFi in an unlicensed spectrum creates an information asymmetry, which means that spectrum regulators will find assessment of spectrum demand more difficult. The paper also highlights the problem facing spectrum regulators when there is a potential for interference to unlicensed services which are widely deployed but have no right to protection from interference. Practical implications Spectrum regulators will need to understand the extent to which an unlicensed spectrum is being used by mobile network operators to deliver wireless broadband services. This understanding is needed to be able to address potential interference with other services using an unlicensed spectrum and to be able to forecast spectrum demand. Originality/value The development of technologies that are designed to be used by existing mobile network operators for the delivery of wireless broadband services using an unlicensed spectrum creates novel regulatory challenges. This paper reviews some of these.
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Moshenchenko, Nikita, and Bohdan Zhurakovskyi. "SMARTCITY WIRELESS FENCE AND INTERACTIVE INFRASTRUCTURE MODEL." Cybersecurity: Education, Science, Technique 1, no. 13 (2021): 63–80. http://dx.doi.org/10.28925/2663-4023.2021.13.6380.
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This article considers the problem of the process of using robots and their control in catering establishments with the help of wireless networks, shows the main features of existing solutions in the field of robotics and networks, their advantages and disadvantages. Wireless networks for their application in robot control have been studied. The main task of wireless networks is to provide high-speed local access to services and data in a certain area, the exchange of information between users within the territory. Building wireless Wi-Fi (IEEE 802.11) networks is now in high demand due to a host of benefits. Among the main advantages of this technology are the most attractive: low cost of equipment; flexibility of equipment use; high data rate. This technology provides the ability to run a number of custom applications. The infrastructure of wireless networks is the basis on which the further implementation of custom applications is built and the support of key services for the company is provided. Such services include network management, information security and service quality assurance (QoS) mechanisms. A virtual environment with the appropriate software was configured, a network simulation was performed, and its results were recorded. This solution can be used in catering establishments. It allows to introduce new technologies into the sphere of human life and increase the profits of food business owners.
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Farid, Zahid, Rosdiadee Nordin, and Mahamod Ismail. "Recent Advances in Wireless Indoor Localization Techniques and System." Journal of Computer Networks and Communications 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/185138.
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The advances in localization based technologies and the increasing importance of ubiquitous computing and context-dependent information have led to a growing business interest in location-based applications and services. Today, most application requirements are locating or real-time tracking of physical belongings inside buildings accurately; thus, the demand for indoor localization services has become a key prerequisite in some markets. Moreover, indoor localization technologies address the inadequacy of global positioning system inside a closed environment, like buildings. Based on this, though, this paper aims to provide the reader with a review of the recent advances in wireless indoor localization techniques and system to deliver a better understanding of state-of-the-art technologies and motivate new research efforts in this promising field. For this purpose, existing wireless localization position system and location estimation schemes are reviewed, as we also compare the related techniques and systems along with a conclusion and future trends.
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Ingabire, Winfred, Hadi Larijani, Ryan M. Gibson, and Ayyaz-UI-Haq Qureshi. "Outdoor Node Localization Using Random Neural Networks for Large-Scale Urban IoT LoRa Networks." Algorithms 14, no. 11 (October 23, 2021): 307. http://dx.doi.org/10.3390/a14110307.
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Accurate localization for wireless sensor end devices is critical, particularly for Internet of Things (IoT) location-based applications such as remote healthcare, where there is a need for quick response to emergency or maintenance services. Global Positioning Systems (GPS) are widely known for outdoor localization services; however, high-power consumption and hardware cost become a significant hindrance to dense wireless sensor networks in large-scale urban areas. Therefore, wireless technologies such as Long-Range Wide-Area Networks (LoRaWAN) are being investigated in different location-aware IoT applications due to having more advantages with low-cost, long-range, and low-power characteristics. Furthermore, various localization methods, including fingerprint localization techniques, are present in the literature but with different limitations. This study uses LoRaWAN Received Signal Strength Indicator (RSSI) values to predict the unknown X and Y position coordinates on a publicly available LoRaWAN dataset for Antwerp in Belgium using Random Neural Networks (RNN). The proposed localization system achieves an improved high-level accuracy for outdoor dense urban areas and outperforms the present conventional LoRa-based localization systems in other work, with a minimum mean localization error of 0.29 m.
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Adil Siddique, Atif Raza Zaidi, and Ghulam Abbas. "Analysis of 5th Generation Mobile Networks Architecture with Essential Wireless Access Technologies." Journal of Computing & Biomedical Informatics 2, no. 02 (September 15, 2021): 187–93. http://dx.doi.org/10.56979/202/2021/33.
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Mobile networks consists of mobile nodes connected with high speed access technologies to provide triple play services to users at mobility with passage of time mobile networks have evolution from its 1st generation to 4th generation. Now on word world is looking for 5th generation mobile network. A new mobile network generation depends upon completely new architecture which can co-operate with older mobile network generations and existing Internet technologies. The 5th generation of mobile network is known as 5G and also called World Wide Wireless Web (WWWW). Existing technologies have limitation in data rates and over mobility and environmental changes can decrease efficiency. This Paper focus on the basic architecture of 5G technology which depends upon new access technology new radio (NR) which is key component of 5G and enables higher data rates to compete older technologies for mobile communication co-existing with LTE (long term evolution) architecture.
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Veiga, Adonay, and Claudia Abbas. "Proposal and Application of Bluetooth Mesh Profile for Smart Cities’ Services." Smart Cities 2, no. 1 (December 26, 2018): 1–19. http://dx.doi.org/10.3390/smartcities2010001.
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‘Smart cities’ is a concept that embraces many technologies and solutions in sensing and carrying a city’s data through a network for further processing and analysis. Smart cities’ main priority is citizens and environmental sustainability. In practice, wireless sensors networks over mesh networks are the approach employed most of the time. In terms of wireless communications technologies, Bluetooth low energy offers a robust, low cost, and low power consumption option. The recently published Bluetooth mesh profile specification addresses the most relevant challenges on that paradigm, adding secure multicast communications capabilities. A framework to create Smart Cities services was proposed and a traffic light service was used to demonstrate specification applicability for smart cities’ services. The proposed service showed that data may be collected and shared between devices in a mesh network through and over a metropolitan area. The specification’s strengths were demonstrated and some topics for further development were identified.
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Qi, Wei Min, and Jie Xiao. "A Novel Method for Data Calibration in Wireless Sensor Networks." Applied Mechanics and Materials 347-350 (August 2013): 1068–73. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.1068.
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In order to provide efficient and suitable services for users in a ubiquitous computing environment, many kinds of context information technologies have been researched. Wireless sensor networks are among the most popular technologies providing such information. Therefore, it is very important to guarantee the reliability of sensor data gathered from wireless sensor networks. However there are several factors associated with faulty sensor readings which make sensor readings unreliable. The research put forward classifying faulty sensor readings into sensor faults and measurement errors, then propose a novel in-network data calibration algorithm which includes adaptive fault checking, measurement error elimination and data refinement. The proposed algorithm eliminates faulty readings as well as refines normal sensor readings and increase reliability. The simulation study shows that the in-network data calibration algorithm is highly reliable and its network overhead is very low compared to previous works.
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Anh, Ngo Hai, and Pham Thanh Giang. "QoS Assessment for Video and Audio Data based on a Testbed for Multimedia Wireless ad Hoc Networks." Journal of Physics: Conference Series 2224, no. 1 (April 1, 2022): 012075. http://dx.doi.org/10.1088/1742-6596/2224/1/012075.
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Abstract Currently, with the fast modernization of wireless networking technologies as well as the very complex needs of the network users, multimedia data takes for a large proportion in the types of network services, this type of data requires Quality of Service (QoS) differs from traditional data, by ensuring the listening and viewing elements of the user. In this paper, we analyse the effect of video and voice data on QoS of wireless network services based on the establishment of an experimental evaluation (emulation) system or testbed, thereby providing empirical analysis on the effect of multimedia data on mobile wireless QoS.
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LINCKE, SUSAN J., and CYNTHIA S. HOOD. "LOAD SHARING VERSUS SERVICE BALANCING IN INTEGRATED NETWORKS." Journal of Interconnection Networks 06, no. 01 (March 2005): 35–50. http://dx.doi.org/10.1142/s0219265905001307.
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As third and fourth generation cellular/wireless networks evolve, operators must learn to efficiently manage diverse services, and multiple networks consisting of varying technologies, cell sizes, and frequency bands. Architectural studies on integrated heterogeneous networks suggest that vertical handovers can be used to increase network efficiency. We propose that carefully-controlled load distribution can also promote Quality of Service (QoS) goals for the diverse services. This study compares session overflow and session placement algorithms in order to determine their effects on efficiency and QoS.
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Mackay, Michael. "Editorial for the Special Issue on 5G-Enabling Technologies and Wireless Networking." Future Internet 14, no. 11 (November 21, 2022): 342. http://dx.doi.org/10.3390/fi14110342.
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The ongoing deployment of 5G networks is seen as a key enabler for realizing upcoming interconnected services at scale, including the massive deployment of the Internet of Things, providing V2X communications to support autonomous vehicles, and the increase in smart homes, smart cities, and Industry 4.0 [...]
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Briso-Rodríguez, César, Ke Guan, Yin Xuefeng, and Thomas Kürner. "Wireless Communications in Smart Rail Transportation Systems." Wireless Communications and Mobile Computing 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/6802027.
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Railway, subway, airplane, and other transportation systems have drawn an increasing interest on the use of wireless communications for critical and noncritical services to improve performance, reliability, and passengers experience. Smart transportation systems require the use of critical communications for operation and control, and wideband services can be provided using noncritical communications. High speed train (HST) is one of the best test cases for the analysis of communication links and specification of the general requirements for train control and supervision, passenger communications, and onboard and infrastructure wireless sensors. In this paper, we analyze in detail critical and noncritical networks mainly using the HST as a test case. First, the different types of links for smart rail transportation are described, specifying the main requirements of the transportation systems, communications, and their applications for different services. Then, we propose a network architecture and requirements of the communication technologies for critical and noncritical data. Finally, an analysis is made for the future technologies, including the fifth-generation (5G) communications, millimeter wave (mmWave), terahertz (THz), and satellites for critical and high-capacity communications in transportation.
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S. Raj, Jennifer, and Smys S. "VIRTUAL STRUCTURE FOR SUSTAINABLE WIRELESS NETWORKS IN CLOUD SERVICES AND ENTERPRISE INFORMATION SYSTEM." Journal of ISMAC 01, no. 03 (December 2019): 188–204. http://dx.doi.org/10.36548/jismac.2019.3.006.
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The wireless network virtualization for the cloud and the enterprise information system would enable maximum utilization of resources, causing an enhancement in the enterprise information system efficiency, by sharing the infrastructure among multiple applications or service provisioning’s. The physical wireless structure of the network and the radio resources are split and shared among different applications by abstraction and isolation to provide a cost effective and efficient handling of the enormous amount of the services. Further the virtualization also provides a migration to the latest products and the technologies at ease. In spite of all these potentials there are several challenges that are to be handled before embedding the virtual wireless network over the physical infrastructure. The paper focuses on developing a virtual wireless network that are sustainable(VSWN) for the cloud and enterprise information system involving the software defined networks that includes network function virtualizing and deep packet inspection for improving the agility and the flexibility of the Cloud enterprise information system. The further validation of the proposed model using the network simulator shows throughput enhancements with cost efficiency when compared to the other wireless network management of cloud.
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Yıldız, Azra, Šejla Džakmić, and Mohammed Ahmed Saleh. "A short survey on next generation 5G wireless networks." Sustainable Engineering and Innovation 1, no. 1 (June 1, 2019): 57–66. http://dx.doi.org/10.37868/sei.v1i1.93.
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Current 4G - the fourth-generation wireless communication, which exists in most countries represents an advance of the previous 3 generation wireless communication. However, there are some challenges and limitations, associated with an explosion of wireless devices, which cannot be accommodated by 4G. Increasing the proliferation of smart devices, the development of new multimedia applications and growing demand for high data rates are among the main problems of the existing 4G system. As a solution, the wireless system designers have started research on the fifth-generation wireless systems. 5G will be the paradigm shift that could provide with ultra-high data rate, low latency, increase of the base station capacity and improved quality of services. This paper will be the review of the changes through the evolution of existing cellular networks toward 5G. There will be represented a comprehensive study associated with 5G, requirements for 5G, its advantages, and challenges. We will explain the architecture changes – radio access network (RAN), air interfaces, smart antennas, cloud RAN and HetNet. Furthermore, there will be discussed about physical layer technologies, which include new channel modes estimation, new antenna design, and MIMO technologies. Also, we will discuss the MAC layer protocols. We will look at three kinds of technologies: heterogeneous networks, massive multiple-input, and output, millimeter-wave. Finally, there will be explained the applications, supported by 5G, new features, various possibilities, and predictions.
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Singal, TL, and Rajvir Singh. "EVOLVING FRAMEWORK FOR IOT-BASED ENERGY EFFICIENT WIRELESS SENSOR NETWORKS FOR HEALTHCARE SERVICES." International Journal of Engineering Applied Sciences and Technology 7, no. 3 (July 1, 2022): 296–305. http://dx.doi.org/10.33564/ijeast.2022.v07i03.042.
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The Internet-of-Things (IoT) is a system of interrelated computing devices having unique identifiers that enables to transfer data over a network without requiring human-to-computer or human-to-human interaction. With the rapid growth in embedded wireless computing devices with high-speed internet connectivity, the Wireless Sensor Networks (WSNs) for healthcare applications comprises of interconnected several tinypowered, wearable, wireless bio-sensors to provide an effective way of collecting vital health-related data. The emerging paradigm of IoT in smart healthcare system requires a specialized secure framework in order to enable real-time health monitoring, reliable diagnostics, effective treatment processes, and many other related aspects of healthcare system. In this paper, various aspects of energy consumption in IoT-based framework of WSNs for healthcare services are discussed. The framework for IoTbased healthcare network cater to upgraded microcontrollers, IoT gateway devices, various wireless and web technologies for IoT, variety of bio-sensors and data collectors, and secure communication protocols. Techniques to optimize the energy consumption in WSNs have been presented leading to energy efficient framework for WSNs suitable for healthcare systems.
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Jeong, Young-Sik, Jae Dong Lee, Jeong-Bae Lee, Jai-Jin Jung, and Jong Hyuk Park. "An Efficient and Securem-IPS Scheme of Mobile Devices for Human-Centric Computing." Journal of Applied Mathematics 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/198580.
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Recent rapid developments in wireless and mobile IT technologies have led to their application in many real-life areas, such as disasters, home networks, mobile social networks, medical services, industry, schools, and the military. Business/work environments have become wire/wireless, integrated with wireless networks. Although the increase in the use of mobile devices that can use wireless networks increases work efficiency and provides greater convenience, wireless access to networks represents a security threat. Currently, wireless intrusion prevention systems (IPSs) are used to prevent wireless security threats. However, these are not an ideal security measure for businesses that utilize mobile devices because they do not take account of temporal-spatial and role information factors. Therefore, in this paper, an efficient and secure mobile-IPS (m-IPS) is proposed for businesses utilizing mobile devices in mobile environments for human-centric computing. Them-IPS system incorporates temporal-spatial awareness in human-centric computing with various mobile devices and checks users’ temporal spatial information, profiles, and role information to provide precise access control. And it also can extend application ofm-IPS to the Internet of things (IoT), which is one of the important advanced technologies for supporting human-centric computing environment completely, for real ubiquitous field with mobile devices.
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von Hugo, D., and N. Bayer. "Challenges for Wireless Mesh Networks to provide reliable carrier-grade services." Advances in Radio Science 9 (August 1, 2011): 377–82. http://dx.doi.org/10.5194/ars-9-377-2011.
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Abstract. Provision of mobile and wireless services today within a competitive environment and driven by a huge amount of steadily emerging new services and applications is both challenge and chance for radio network operators. Deployment and operation of an infrastructure for mobile and wireless broadband connectivity generally requires planning effort and large investments. A promising approach to reduce expenses for radio access networking is offered by Wireless Mesh Networks (WMNs). Here traditional dedicated backhaul connections to each access point are replaced by wireless multi-hop links between neighbouring access nodes and few gateways to the backbone employing standard radio technology. Such a solution provides at the same time high flexibility in both deployment and the amount of offered capacity and shall reduce overall expenses. On the other hand currently available mesh solutions do not provide carrier grade service quality and reliability and often fail to cope with high traffic load. EU project CARMEN (CARrier grade MEsh Networks) was initiated to incorporate different heterogeneous technologies and new protocols to allow for reliable transmission over "best effort" radio channels, to support a reliable mobility and network management, self-configuration and dynamic resource usage, and thus to offer a permanent or temporary broadband access at high cost efficiency. The contribution provides an overview on preliminary project results with focus on main technical challenges from a research and implementation point of view. Especially impact of mesh topology on the overall system performance in terms of throughput and connection reliability and aspects of a dedicated hybrid mobility management solution will be discussed.
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Kassab, Mohamed, Jean-Marie Bonnin, and Abdelfettah Belghith. "Technology Integration Framework for Fast and Low Cost Handovers—Case Study: WiFi-WiMAX Network." Journal of Computer Systems, Networks, and Communications 2010 (2010): 1–21. http://dx.doi.org/10.1155/2010/205786.
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The Next Generation Wireless Networks (NGWNs) are seemed to be heterogeneous networks based on the integration of several wireless technologies. These networks are required to achieve performances equivalent to classic wireless networks by ensuring the continuity of communications and the homogeneity of network management during horizontal and vertical handovers. This task is even more important when management services, like security and quality of service (QoS), are deployed at access technology level. In this paper, we propose a framework for heterogeneous wireless technology integration based on network architecture skeleton and a handover management mechanism. This framework optimizes the layer-2 handover procedure to achieve performances required by sensitive applications while ensuring the minimization of signaling overhead required for operated networks. As an application example, we make use of this framework to propose a heterogeneous network based on WiFi and WiMAX technologies. We present an application example of the framework using the specification of a WiFi-WiMAX network. We propose several performance evaluations based on simulation tests based on this application. The latter confirm the efficiency of handover delay optimization and the minimization of management signaling costs.
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Adou, Kpangny Yves Berenger, Ekaterina V. Markova, and Elena A. Zhbankova. "Performance analysis of queueing system model under priority scheduling algorithms within 5G networks slicing framework." Discrete and Continuous Models and Applied Computational Science 30, no. 1 (February 25, 2022): 5–20. http://dx.doi.org/10.22363/2658-4670-2022-30-1-5-20.
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A new era is opening for the world of information and communication technologies with the 5G networks release. Indeed 5G networks appear in modern wireless systems as solutions to traditional networks inflexibility and lack of radio resources problems. Using these networks the operators can expand their services range at will and, therefore, manage daily operations by monitoring key performance indicators (KPIs) - helping meet the quality of service (QoS) requirements much easily. To meet the QoS requirements 5G networks can be implemented alongside priority scheduling algorithms. This paper considers the operation of a wireless network slicing model under two scheduling algorithms. A comparative analysis of main performance measures is provided.
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Nencioni, Gianfranco, Rosario G. Garroppo, Andres J. Gonzalez, Bjarne E. Helvik, and Gregorio Procissi. "Orchestration and Control in Software-Defined 5G Networks: Research Challenges." Wireless Communications and Mobile Computing 2018 (August 13, 2018): 1–18. http://dx.doi.org/10.1155/2018/6923867.
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The fifth generation (5G) of cellular networks promises to be a major step in the evolution of wireless technology. 5G is planned to be used in a very broad set of application scenarios. These scenarios have strict heterogeneous requirements that will be accomplished by enhancements on the radio access network and a collection of innovative wireless technologies. Softwarization technologies, such as Software-Defined Networking (SDN) and Network Function Virtualization (NFV), will play a key role in integrating these different technologies. Network slicing emerges as a cost-efficient solution for the implementation of the diverse 5G requirements and verticals. The 5G radio access and core networks will be based on a SDN/NFV infrastructure, which will be able to orchestrate the resources and control the network in order to efficiently and flexibly and with scalability provide network services. In this paper, we present the up-to-date status of the software-defined 5G radio access and core networks and a broad range of future research challenges on the orchestration and control aspects.
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Solairaju, A., and S. Vivek Saravanan. "Security Service for Wireless Sensor Network." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 11, no. 6 (November 5, 2013): 2715–24. http://dx.doi.org/10.24297/ijct.v11i6.3047.
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Wireless Sensor Networks (WSNs) are gradually adopted in the industrial world due to their advantages over wired networks. In addition to saving cabling costs, WSNs widen the realm of environments feasible for monitoring. They thus add sensing and acting capabilities to objects in the physical world and allow for communication among these objects or with services in the future Internet. However, the acceptance of WSNs by theindustrial automation community is impeded by open issues, such as security guarantees. To examine both of these perspectives, we select and survey relevant WSN technologies dedicated to industrial automation. We determine to carry out a threat analysis, which act as basis of our evaluation of the current state-of-the-art. According to the results of this evaluation, we identify and discuss some research issues.
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Madaan, Jyoti, Sunanda Gupta, and Pratima Manihas. "A new method for handoff target network selection." IAES International Journal of Robotics and Automation (IJRA) 8, no. 1 (March 1, 2019): 36. http://dx.doi.org/10.11591/ijra.v8i1.pp36-43.
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In wireless communications of fourth generation the expectation to assimilate a hypothetically numerous heterogeneous wireless technologies are happened under consideration of a novel step toward worldwide smooth access. The advancement in wireless networks increases the challenges of mobility management as well the challenges of merging a various number of wireless networks. Out of those the main challenge for smooth movement is the accessibility of consistent vertical (intersystem) and horizontal (intra-system) handoff processes. So to improve the quality of service and to provide always best connected services all the time, the handoff decision algorithm must select an optimum target network from the available candidate networks. The purpose of this paper is to provide a mechanism for selecting an optimum target network from the available networks. This method is devised for maximizing the user satisfaction level, by selecting the “best” network as the handover target network among multiple candidate networks.
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Kuikka, Vesa, and Heikki Rantanen. "Resilience of Multi-Layer Communication Networks." Sensors 23, no. 1 (December 22, 2022): 86. http://dx.doi.org/10.3390/s23010086.
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Advances in the future communication technologies and capabilities of new services in heterogeneous network systems have increased the need for modelling and analysing various aspects of both the resilience of networked systems and usability from the user’s point of view. We extend the traditional network reliability theory to cover a wider scope of quality requirements and applications. The proposed method can be used to model the resilience of different structured networks, and the quality of information services. We use the term resilience to cover both the technical and quality-of-service aspects of user requirements. The modelling method is demonstrated with a use case of a multilayer communication network system. However, the method can be used to model any kind of technological network, such as wireless, sensor, and backbone networks.
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Bagubali, A., Tanmay Verma, Anurag Anand, V. Prithiviraj, and P. S. Mallick. "Performance Analysis of Handover Schemes in Heterogeneous Networks." Journal of Circuits, Systems and Computers 27, no. 11 (June 6, 2018): 1850177. http://dx.doi.org/10.1142/s0218126618501773.
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Internet protocol (IP)-based mobile systems are ushering new and faster technologies in wireless mobile networking. Therefore, the expectations from these network services with respect to data transfer rate and quality of service (QoS) are high. As such, meeting these requirements is the recent trend in modern wireless technologies. An important aspect regarding such improvements is the modification of handoff schemes between different networks. In this paper, we are focusing on the recent trends based on seamless handoff scheme in heterogeneous networks such as worldwide interoperability for microwave access (WiMAX) and long term evolution (LTE). The development of the session initiation protocol (SIP) Prior-INVITE scheme is an improvement on the earlier used SIP Re-INVITE method, which comes a long way in decreasing the average handoff delay. The performance analysis using software simulation on account of various parameters, such as handoff delay, cost of signaling and packet loss rate are accomplished in this work. The performance analysis demonstrates that the proposed scheme outperforms the ordinary cross-layer scheme and noncross-layer scheme in a vertical handover scenario.
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Ramli, A., N. Zulkifli, and S. M. Idrus. "Power Consumption Modeling and Analysis of Integrated Optical-Wireless Access Network." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 6 (December 1, 2017): 3475. http://dx.doi.org/10.11591/ijece.v7i6.pp3475-3483.
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The integration of optical and wireless technologies at access networks are considered as a future solution which provide both high bandwidth and high mobility in an efficient way. GPON is a suitable candidate for optical backhaul due to the combination of higher data rates, greater split ratio and support for triple play services hence it offers maximum flexibility and cost advantages. On the other hand, recent developments of new radio access technologies and introduction of femtocell base stations provide the potential of offering broadband services and applications to everyone and everywhere. However, the power consumption of this network demands a particular attention because access networks are the largest contributor the network related electricity consumption. Therefore, in this paper we evaluate the power consumption of integrated optical-wireless access network which is based on independent ONU-BS architecture. We proposed a power consumption model for such network and the assessment has been done under different simulation scenarios. The constructed model will provide insight of the energy performance of the integrated access network so that in the network design process, focus can be done to the most energy saving strategies.
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Otsetova-Dudin, Ekaterina. "Handoff in Various Mobile Network Technologies." Transport and Communications 7, no. 2 (2019): 28–32. http://dx.doi.org/10.26552/tac.c.2019.2.6.
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Mobile cellular networks are an indispensable part of modern life, where the need for customer satisfaction in the use of many different services by consumers is constantly increasing. The requirements for higher transmission speed, lossless transmission, reliability, efficiency, low latency, mass connectivity, guarantee of high Quality of Service criteria are repeatedly increasing. All this requires the continuous development of the used technologies as well as the introduction of new generations of networks. Handover mechanism is extremely important in cellular network because of the cellular architecture employed to maximize spectrum utilization. To ensure the quality of service in wireless cellular networks, the report proposes the use of a Horizontal Handoff Priority Scheme. Simulation experiments have been carried out, the probability parameters of the scheme have been evaluated and the probabilities of losses occurrence have been classified as rare events. The proposed material are various algorithms and techniques for the implementation of Vertical and Horizontal Handoff in 3G, 4G and fifth-generation networks to provide the required QoS for mobile users with Ultra-High Definition.
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Bi, Yuming, Lei Tian, Mengmeng Liu, Zhenzi Liu, and Wei Chen. "Research on Joint Handoff Algorithm in Vehicles Networks." Chinese Journal of Engineering 2016 (April 18, 2016): 1–10. http://dx.doi.org/10.1155/2016/3190264.
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With the communication services evolution from the fourth generation (4G) to the fifth generation (5G), we are going to face diverse challenges from the new network systems. On the one hand, seamless handoff is expected to integrate universal access among various network mechanisms. On the other hand, a variety of 5G technologies will complement each other to provide ubiquitous high speed wireless connectivity. Because the current wireless network cannot support the handoff among Wireless Access for Vehicular Environment (WAVE), WiMAX, and LTE flexibly, the paper provides an advanced handoff algorithm to solve this problem. Firstly, the received signal strength is classified, and the vehicle speed and data rate under different channel conditions are optimized. Then, the optimal network is selected for handoff. Simulation results show that the proposed algorithm can well adapt to high speed environment, guarantee flexible and reasonable vehicles access to a variety of networks, and prevent ping-pong handoff and link access failure effectively.
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Tanveer, Jawad, Amir Haider, Rashid Ali, and Ajung Kim. "Machine Learning for Physical Layer in 5G and beyond Wireless Networks: A Survey." Electronics 11, no. 1 (December 30, 2021): 121. http://dx.doi.org/10.3390/electronics11010121.
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Fifth-generation (5G) technology will play a vital role in future wireless networks. The breakthrough 5G technology will unleash a massive Internet of Everything (IoE), where billions of connected devices, people, and processes will be simultaneously served. The services provided by 5G include several use cases enabled by the enhanced mobile broadband, massive machine-type communications, and ultra-reliable low-latency communication. Fifth-generation networks potentially merge multiple networks on a single platform, providing a landscape for seamless connectivity, particularly for high-mobility devices. With their enhanced speed, 5G networks are prone to various research challenges. In this context, we provide a comprehensive survey on 5G technologies that emphasize machine learning-based solutions to cope with existing and future challenges. First, we discuss 5G network architecture and outline the key performance indicators compared to the previous and upcoming network generations. Second, we discuss next-generation wireless networks and their characteristics, applications, and use cases for fast connectivity to billions of devices. Then, we confer physical layer services, functions, and issues that decrease the signal quality. We also present studies on 5G network technologies, 5G propelling trends, and architectures that help to achieve the goals of 5G. Moreover, we discuss signaling techniques for 5G massive multiple-input and multiple-output and beam-forming techniques to enhance data rates with efficient spectrum sharing. Further, we review security and privacy concerns in 5G and standard bodies’ actionable recommendations for policy makers. Finally, we also discuss emerging challenges and future directions.
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Roman, Cristian, Ruizhi Liao, Peter Ball, and Shumao Ou. "Mobility and Network Selection in Heterogeneous Wireless Networks: User Approach and Implementation." Network Protocols and Algorithms 8, no. 2 (July 21, 2016): 107. http://dx.doi.org/10.5296/npa.v8i2.9327.
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The Intelligent Transport Systems (ITS) wireless infrastructure needs to support various safety and non-safety services for both autonomous and non-autonomous vehicles.The existing wireless infrastructures can already be used for communicating with different mobile entities at various monetary costs.A packet scheduler, included in a shim layer between the network layer and the medium access (MAC) layer, which is able to schedule packets between uncoordinated Radio Access Technologies (RATs) without modification of the wireless standards, has been devised and its performance evaluated.In this paper, we focus on the influence of mobility type in heterogeneous wireless networks.Three cases are considered based on the mobility in the city: walking, cycling, and driving. Realistic simulations are performed by generating mobility traces of Oxford from Google Maps and overlaying the real locations of existing WiFi Access Points. Results demonstrate that the shim layer approach can accommodate different user profiles and can be a useful abstraction to support Intelligent Transport Systems where there is no coordination between different wireless operators.
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REYES, A., C. BARRADO, and A. GUERRERO. "COMMUNICATION TECHNOLOGIES TO DESIGN VEHICLE-TO VEHICLE AND VEHICLE-TO-INFRASTRUCTURES APPLICATIONS." Latin American Applied Research - An international journal 46, no. 1 (January 29, 2016): 29–35. http://dx.doi.org/10.52292/j.laar.2016.323.
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Intelligent Transport Systems use communication technologies to offer real-time traffic information services to road users and government managers. Vehicular Ad Hoc Networks is an important component of ITS where vehicles communicate with other vehicles and road-side infrastructures, analyze and process received information, and make decisions according to that. However, features like high vehicle speeds, constant mobility, varying topology, traffic density, etc. induce challenges that make conventional wireless technologies unsuitable for vehicular networks. This paper focuses on the process of designing efficient vehicle-to-vehicle and vehicle-to road-side infrastructure applications.