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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.
1 Protocol and Network
The network consists three types nodes: meters, repeaters and concentrators.1: Diagram Wireless M-Bus network with two concentrators (C), one
repeater (R) and several meters (M). 3. heat and water meters. There are several meters range both concentrators the meters
are broadcasting their data, therefore both will receive them.
Fig.e.WIRELESS M-BUS SIMULATION
To assess the feasibility and realism the simulation, the first protocol im-
plemented was Wireless M-Bus (WM-Bus) [5] mode that used some the
meters deployed Kamstrup, e.
18
.
The meters periodically broadcast their state information. The main advantage
of this protocol start the project the fact that the communication only
one-way, i.1 shows diagram the configuration with two concentrators and
one repeater. the meters broadcast their data, but not receive any signals. More-
over, there were data available from real deployment about positions devices
and measurements received packets. These signals are received
by the concentrators, where the data can processed.g. was therefore good choice for making
preliminary simulations and evaluating the performance the propagation model.
3. They can be
configured re-broadcast signals received from given meters, effectively expanding
the range the concentrators respect those meters. The repeaters are used in
cases where the signals from the meters are not successfully received.
The Figure 3
