Temat: wireless mesh networks - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Review of Simulators for Wireless Mesh Networks
Autorzy:: Owczarek, P.
Zwierzykowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/308567.pdf
Data publikacji:: 2014
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: simulators
wireless mesh networks
Opis:: The research of computer networks construction of models that reflect the current audited environment to carry out practical research is extremely dicult and often involves signicant costs. Hence, the popularity of simulation tools that help developers to determine as early as at the stage of the simulation whether a given solution can be deployed in a real network. However, over time many dierent simulation tools have been developed, each with dierent characteristics, dierent uses, dierent strengths and weaknesses. It is the task of the researcher then to select, before starting the actual research, one of the available simulators in accordance with the needs and adopted criteria of evaluation. In the article the authors present issues related to the simulation tools and the main advantages of simulation as well as their drawbacks. To help researchers select an appropriate simulation environment, the authors present statistical information gathered during a literature survey of a number of research articles from the most popular publishers in which the selected simulators were used in initial system design.
Źródło:: Journal of Telecommunications and Information Technology; 2014, 3; 82-89
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Properties of a Wireless Mesh Network Constructed with the Use of IQRF Modules in the Indoor Environment
Autorzy:: Pluta, Sławomir
Roszkowski, Patryk
Powiązania:: https://bibliotekanauki.pl/articles/227044.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: wireless mesh networks
WMN
IQRF
indoor environment
IoT
Opis:: The subject of the article is the design and practical implementation of the wireless mesh network. IQRF radio modules were used for the network design. The IQRF® technique has enabled the construction of a mesh network with the possibility of reconfiguration. The theoretical part contains a description of the IQRF® hardware solutions used. The practical scope includes the design part, where the configuration of the radio modules was carried out and the parameters of the radio network were set to allow its implementation in various topologies. Then, a wireless network consisting of 10 IQRF modules was launched in the P3 building of the Opole University of Technology. At this stage, configured radio modules were placed in selected rooms on all five floors of the building in order to carry out tests of the radio network constructed in this way. The tests included measuring the packet transmission delay time as well as the received signal strength. Research was carried out for several network topologies.
Źródło:: International Journal of Electronics and Telecommunications; 2020, 66, 3; 537-544
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: IPv6 in Wireless Networks - Selected Issues
Autorzy:: Kukliński, S.
Radziszewski, P.
Wytrębowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/309582.pdf
Data publikacji:: 2011
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: extension headers
IPv6
WiFi
wireless mesh networks
Opis:: The article presents issues concerning the construction of autonomous wireless networks based on the IPv6 protocol. Prospects of implementation of IPv6 in wireless networks and IPv6 features and mechanisms important in such applications are discussed. Research directions related to the use of IPv6 in wireless networks are also outlined. Then the selected concepts are described, arising in the course of the EFIPSANS (Exposing the Features in IP Version Six Protocols that can be Exploited/Extended for the Purposes of Designing/Building Autonomic Networks and Services) project, during studies on the autonomy of nodes and routing configuration for wireless networks. Concepts presented here apply to wireless ad hoc mesh networks. Discussed is their nature and aspects related to auto-configuration and autonomously operating routing. In particular, there is a Wireless Autonomic Routing Framework (WARF) architecture presented.
Źródło:: Journal of Telecommunications and Information Technology; 2011, 2; 24-30
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Evaluation of the Delay-Aware NUM-Driven Framework in an Internetwork Environment
Autorzy:: Urbański, M.
Poszwa, M.
Misiorek, P
Gallucci, D.
Powiązania:: https://bibliotekanauki.pl/articles/307614.pdf
Data publikacji:: 2014
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: DANUMS
Network Utility Maximization
seamless mobility
WiOptiMo
Wireless Mesh Networks
Opis:: Nowadays, due to emergence of cloud services, even the basic uses of personal computers may require the access to the Internet. In this paper modifications to Delay-Aware Network Utility Maximization System (DANUMS) are presented, which enable it to be deployed in an internetwork environment. The proposed solution consists of DANUMS and WiOptiMo systems, which cooperate by exchanging measurements of transmitted traffic in order to improve the network utility. Additionally, WiOptiMo enhances mobility by providing facilities for soft handover. Experiments presented in this paper illustrate the benefits gained from the integrated system application.
Źródło:: Journal of Telecommunications and Information Technology; 2014, 3; 17-25
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Ubiquity of Client Access in Heterogeneous Access Environment
Autorzy:: Gierłowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/308576.pdf
Data publikacji:: 2014
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: handover
mesh networks
mobility
technological networks
ubiquitous access
wireless networks
Opis:: With popularization of mobile computing and diverse offer of mobile devices providing functionality comparable to personal computers, the necessity of providing network access for such users cannot be disputed. The requirement is further reinforced by emergence of general purpose mobile operating systems which provide their full functionality only with network connectivity available and popular XaaS (Everything as a Service) approach. In this situation and combined with the fact that most Internet-based services are able to function efficiently even in best effort environment, requirement of ubiquity of network access becomes one of the most important elements of today’s computing environment. This paper presents a general overview of the the vast group of mechanisms and technologies utilized in modern attempts to efficiently provide ubiquity on network access in heterogeneous environment of today’s access systems. It starts with division of users interested in ubiquitous network access into broad groups of common interest, complete with their basic requirements and access characteristics, followed by a survey of both already popular and new wireless technologies suitable to provide such access. Then a general discussion of most important challenges which must be addressed while attempting to fulfill the above goal is provided, addressing topics such as handover control and mobility management.
Źródło:: Journal of Telecommunications and Information Technology; 2014, 3; 3-16
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Interworking and cross-layer service discovery extensions for IEEE 802.11s wireless mesh standard
Autorzy:: Gierłowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/307686.pdf
Data publikacji:: 2013
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: 802.11
cross-layer
interworking
mesh
wireless networks
Opis:: With the rapid popularization of mobile end-user electronic devices, wireless network technologies begin to play a crucial role as networks access technologies. While classic point-to-multipoint wireless access systems, based on fixed infrastructure of base stations providing access to clients, remain the main most popular solution, an increasing attention is devoted to wireless mesh systems, where each connecting client can extend overall resources of the network by becoming a network node capable of forwarding transit traffic. This ability results in severe reduction of the necessary network infrastructure, provides through coverage (thereby offering significant step towards ubiquity of network access) and offers massive redundancy. One of the most promising wireless mesh solutions currently being developed is an IEEE 802.11s standard, based on popular Wi-Fi technology. It combines low deployment costs with comprehensive suite of mechanisms able to operate a self-forming, autoconfigurable, dynamically extending, and secure mesh solution. However, despite its advantages, the standard lacks sufficient support for a number of functionalities, which can lead to significant inefficiency and degradation of service quality in real-world IEEE 802.11s network deployments. In the paper we propose a number of extensions of IEEE 802.11s mechanisms, designed to provide better service quality in case of real-world deployment scenarios, especially in case of large systems. Both propositions introduce modifications to mesh path discovery and interworking procedures, while retaining compatibility with standard solution. Their basic functionality and efficiency have been verified by means of simulation model in large-scale, self-organizing mesh structure. Subsequently they have been implemented and tested in real-world, access network testbed deployment. The results clearly indicate their utility, particularly in case of larger deployments of this network system type.
Źródło:: Journal of Telecommunications and Information Technology; 2013, 3; 97-105
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: A WSN architecture for building resilient, reactive and secure wireless sensing systems
Autorzy:: Gburzyński, Paweł
Powiązania:: https://bibliotekanauki.pl/articles/1954583.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Gdańska
Tematy:: wireless sensor networks
mesh networks
reliability
security
internet of things
bezprzewodowe sieci czujnikowe
sieci typu mesh
niezawodność
bezpieczeństwo
internet rzeczy
Opis:: We introduce a wireless sensor network (WSN) architecture intended for massive deployments in custom applications where the primary goal is the collection of low-volume (e.g., telemetric) data possibly augmented with spontaneous special events, like alerts or alarms. The network is built of inexpensive, small-footprint, energy-frugal, possibly mobile nodes running reactive programs and self-organizing themselves into resilient distributed systems in a manner embracing the limited capabilities of the devices as well as the unreliable nature of ad-hoc wireless communication. We propose and elaborate on a holistic approach to constructing complete WSN applications. Our approach incorporates a certain unified programming and communication paradigm. In addition to producing small, energy-efficient, self-documenting and reliable programs for ultra-small-footprint motes, that paradigm enables authoritative virtual execution of complete application, thus facilitating their rapid development, testing, augmentation and modification.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2021, 25, 2; 141-181
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The analysis of energy consumption in 6TiSCH network nodes working in sub-GHz band
Autorzy:: Kubaszek, Mateusz
Macheta, Jan
Krzak, Łukasz
Worek, Cezary
Powiązania:: https://bibliotekanauki.pl/articles/963844.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: IEEE802.15.4e
TSCH
6TiSCH
energy
modelling
energy consumption
wireless sensor networks
industrial IoT
mesh networks
Opis:: The 6TiSCH communication stack enables IPv6 networking over the TSCH (Time Slotted Channel Hopping) mode of operation deﬁned in IEEE 802.15.4. Lately it became an attractive solution for Low power and Lossy Networks (LLNs), suitable for Industrial Internet (IIoT) applications. This article introduces a credible energy consumption model for the 6TiSCH network nodes, operating in the 863-870 MHz band. It presents the analysis leading to the construction of the model as well as veriﬁcation through experimental measurements which showed 98% accuracy in determining power consumption for two different network topologies. The article includes reliable battery lifetime predictions for transit and leaf nodes along with other parametric study results.
Źródło:: International Journal of Electronics and Telecommunications; 2020, 66, 1; 201-210
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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