نتایج جستجو برای: Wireless networks, LoRaWAN

تعداد نتایج: 479341  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

wireless sensor networks (wsns) are one of the most interesting consequences of innovations in different areas of technology including wireless and mobile communications, networking, and sensor design. these networks are considered as a class of wireless networks which are constructed by a set of sensors. a large number of applications have been proposed for wsns. besides having numerous applic...

Journal: :CoRR 2017
Norbert Blenn Fernando A. Kuipers

The Long-Range Wide-Area Network (LoRaWAN) specification was released in 2015, primarily to support the Internet-of-Things by facilitating wireless communication over long distances. Since 2015, the role-out and adoption of LoRaWAN has seen a steep growth. To the best of our knowledge, we are the first to have extensively measured, analyzed, and modeled the performance, features, and use cases ...

LoRaWAN is one of the new and updated standards for IoT applications. However, the expected high density of peripheral devices for each gateway, and the absence of an operative synchronization mechanism between the gateway and peripherals, all of which challenges the networks scalability. In this paper, we propose to normalize the communication of LoRaWAN networks using a Reservation-ALOHA (R-A...

Journal: :CoRR 2017
Stéphane Delbruel Nicolas Small Danny Hughes

There is growing interest in the Internet of Things (IoT) and especially Low-Power Wide Area Networks (LPWAN), which are rapidly being rolled-out globally. Within the LPWAN market, LoRaWAN is considered a leading solution which has achieved significant success. Despite the rapid uptake of LoRaWAN, scalability concerns arising from interference and contention are also growing. While the current ...

2017
Jetmir Haxhibeqiri Floris Van Den Abeele Ingrid Moerman Jeroen Hoebeke

LoRa is a long-range, low power, low bit rate and single-hop wireless communication technology. It is intended to be used in Internet of Things (IoT) applications involving battery-powered devices with low throughput requirements. A LoRaWAN network consists of multiple end nodes that communicate with one or more gateways. These gateways act like a transparent bridge towards a common network ser...

Journal: :CoRR 2017
Chaojie Gu Rui Tan Xin Lou Dusit Niyato

Separation of control and data planes (SCDP) is a desirable paradigm for low-power multi-hop wireless networks requiring high network performance and manageability. Existing SCDP networks generally adopt an in-band control plane scheme in that the control-plane messages are delivered by their dataplane networks. The physical coupling of the two planes may lead to undesirable consequences. To ad...

Journal: :international journal of information science and management 0
a. ezil sam leni m.s. , research scholar sathyabama deemed university s. k. srivatsa srivatsa, ph.d. , m.i.t- chennai university

as wireless networks with high data rate get widely deployed, improving the performance of tcp over these networks plays vital role. wireless link losses have dramatic adverse impact on tcp performance due to the difficulty in distinguishing the congestion losses from wireless link losses. we first, studied the various existing bandwidth estimation algorithms over the wireless networks. in this...

Journal: :IEEE Pervasive Computing 2021

LoRa has emerged in recent years as a wireless technology providing long-range communication for low-power Internet-of-Things (IoT) devices. The LoRaWAN architecture adds the medium access control (MAC) and application layers, defines star of stars topology suitable many diverse IoT applications. However, number scenarios, more flexible network than LoRaWAN’s is needed. We review state art desi...

Journal: :CoRR 2016
Steeve Zozor Zhuocheng Li Quentin Lampin Jean-Marc Brossier

In wireless networks, interferences between transmissions are modelled either in time or frequency domain. In this article, we jointly analyze interferences in the timefrequency domain using a stochastic geometry model assuming the total time-frequency resources to be a two-dimensional plane and transmissions from Internet of Things (IoT) devices timefrequency patterns on this plane. To evaluat...

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