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Chapter 2. Related Work/Fundamentals 11

ZigBee

ZigBee is a speciﬁcation for a suite of high level communication protocols based on IEEE

802.15.4 [14]: A Developing Standard for Low-Rate Wireless Personal Area Networks. It is

targeted at applications that require a long battery life, secure networking and low data rates.

Application and device proﬁles such as Home Automation, Smart Energy, Health Care and many

others are provided to simplify the conﬁguration eﬀort of an installation. A ZigBee network

consists of three types of devices:

• Coordinator: controls formation and security of a network

• Routers (full function devices): extend the range of networks

• End devices (reduced function devices): simple sensing and acting devices like shutter

motors or light switches

Star

Mesh

Cluster Tree

Pan Coordinator

Full Function Device

Reduced Function Device

Figure 2.4.: Diﬀerent ZigBee topologies.

ZigBee can form star type networks, with a coordinator act as the root device, cluster-tree or

generic meshed networks [15]. Meshed networks provide high robustness, whereas the star types

consume less energy. The Cluster-tree topology is a mixture of both star and mesh networks. The

network type is chosen by the used products and their application ﬁeld. ZigBee products are sold

by members of the ZigBee Alliance, which includes over 400 diﬀerent companies

. As a result

there is a large number of diﬀerent products for all application ﬁelds.

http://www.zigbee.org/About/UnderstandingZigBee.aspx

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RFXCOM RFXtrx433 Spezifikationen Seite 18