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Kategorie: Diplomové, bakalářské práce |
Tento dokument chci!
Tato práce zkoumá vhodnost a požadavky návrhu simulací pro simulátor NS-3 pro případ bezdrátových sítí používaných v měřící infrastruktuře společnosti Kamstrup. V práci jepopsán simulátor NS-3 a je vytvořena základní implementace dvou protokolů. WirelessM-Bus jako příklad jednosměrného protokolu pro zařízení napájené z baterií. Simulace Wireless M-Bus je porovnána s daty naměřenými v reálném systému. NS-3 poskytuje flexibilní prostředí pro vývoj simulací různých síťových protokolů, včetně těch určených pro sítě inteligentních měřidel.
Wireless M-Bus (WM-Bus) one-way data-gathering protocol for battery-
powered heat and water meters.
The complexity the protocols and especially the size the network make it
unrealistic test certain aspects the protocols real devices.
In this project, simulation model the WM-Bus procotol created in
the NS-3 simulation tool and simulated packet hit ratios are compared with actual
measurements. this project, the NS-3 simulator is
chosen and used the simulation tool. improvement of
smart grid applications.
10
. While the
latter can helped adding repeater devices the network, the former solved
by the communication protocol design, described section The data broad-
casted the meters gathered devices called concentrators that are distributed
around the target area.INTRODUCTION
Wireless mesh networks are widely deployed various environments and for different
purposes. For example extending the bandwidth and optimizing its use can allow
more devices managed using the same resources, allowing e. Moreover, these devices can placed basements,
therefore the signals often suffer from high levels penetration losses. The simulation therefore allows testing
new design ideas very early the development, while keeping the desired balance
between the realism the simulation and its complexity.
Chapter gives overview about the NS-3 simulator and its features, chapter 3
describes the WM-Bus protocol and its model.
The scope the simulation models can extended meet future needs, such
as aid planning the WM-Bus network. Moreover, even if
such test was possible, tweaking the devices’ firmware would require much more
effort than editing the simulation models.
A protocol improvement replacement can improve the network parameters in
several ways.g. Additionally, cases where power consumption con-
cern, important design the wireless protocol suite fulfill the requirements,
such having the lowest possible power consumption having the consumption
predictable, device can have guaranteed lifetime. The main constraints are therefore power consump-
tion and collision avoidance without the possibility listen the channel and get
feedback from the network.
To able efficiently study the behaviour the proposed mechanisms and
to compare their performance, crucial develop simulation framework that
allows the concepts tested with low cost, high flexibility and high level of
realism, modelling the actual devices, their actual parameters and the radio trans-
mission parameters their deployments
