zigbee mesh network tutorial | zigbee mesh network basics

The zigbee mesh network tutorial covers zigbee mesh network basics with diagram. It mentions zigbee mesh network features and provide links to zigbee tutorials. It mentions advantages and disadvantages of zigbee mesh technology.

The figure-1 depicts common network topology types viz. star, tree and mesh. Figure shows how the zigbee elements e.g. coordinator, router and end devices are connected in these different network topology types.

network topology types

Typically in mesh network, each node relays or routes data till it reaches the destination node. Mesh networking is very powerful in routing the data. In mesh, each of the nodes co-operate with other nodes so that equal distribution of data can be achieved.

The advantages of mesh networking are as follows:
• The range is extended as it allows data to hop node to node and insertion of any node is easy in the network.
• The network is self healing type as in case of failure of any node or lost connection conditions, data can be routed through other healthy nodes in the network.

As zigbee supports mesh topology between its devices it has become very popular as wireless mesh networking system. It has been developed to support low data rate and low power applications.

Refer following zigbee mesh network tutorial related sub topics:
About zigbee   Zigbee network basics   protocol Stack   PHY Layer   PHY frame   MAC Frame   Frequency Bands   Conformance test  AODV protocol  Products  Zigbee 3.0 tutorial 

Zigbee Mesh Network Basics

zigbee mesh network

The figure-2 depicts simple zigbee mesh network consisting of a coordinator, routers and end devices. In this network all the nodes can transmit or receive the data but they have specific roles/functions. Zigbee is open standard and hence interoperability between different vendor devices can be done without any issues.

• Only one coordinator is needed to form zigbee network. It stores all the critical information about the zigbee network including encryption keys.
• Routers are intermediate nodes which help in relaying data between devices.
• End devices are of two types reduced function devices and full function devices. Reduced function devices can not relay data and will talk to their parent devices (routers/coordinator) to perform relaying. On the other end, full function devices do the job of relaying. Zigbee Mesh network uses full function devices.

Features of Zigbee Mesh Network

Following are the features of Zigbee mesh network.

Specifications Zigbee Mesh Support
IEEE Standard 802.15.4-2003 defines PHY and MAC layers, upper layers are managed by zigbee alliance.
Frequecy of operation Supports 2.4 GHz, 900 MHz and 868 MHz
Data rate 250 Kbps, 40 Kbps, 20 Kbps in different bands
Sleep operation Only end devices can sleep, coordinator and routers can not sleep so that new end devices can easily join the zigbee mesh network.
Coverage range Most devices have range of abour 3.2 Km or less for each hop during transmission.
Encryption/Security Uses AES encryption
Zigbee Frame payload size 80bytes
Interoperability between different vendor devices Possible as it is open standard
Addressing Two types are supported MAC addressing of size 64 bit and network addressing of size 16 bit.

Digi International has developed proprietary mesh protocol based wireless zigbee system known as "DigiMesh". This DigiMesh network has advantages and disadvantages over normal zigbee mesh network. The DigiMesh allows sleep funtionality on all the nodes. This will save battery and extends its life.

Digimesh is suitable for the following needs:

This zigbee mesh tutorial covers zigbee network, zigbee protocol stack, physical layer types, frame structure, frequency bands, compliance testing and more. Navigate using arrow to go through the complete tutorial pages.

Zigbee 3.0 Tutorial including Features and Stack

This Zigbee 3.0 tutorial covers Zigbee 3.0 features, Zigbee 3.0 protocol stack and mentions benefits of zigbee 3.0 in IoT (Internet of Things) applications.

zigbee mesh tutorial & products related links

what is zigbee   Zigbee Protocol  Zigbee PHY   Zigbee frame   Zigbee MAC  Zigbee bands  RF4CE   6LoWPAN   AODV protocol  Zigbee Products  Zigbee Gadgets   Zigbee Switch   Zigbee Sensor   Zigbee USB Dongle   Zigbee Smart Meter  Zigbee to Ethernet  

Refer Z-Wave Basic Tutorial

z-wave tutorial describing features, z-wave frequency bands, z-wave network, z-wave frame, z-wave protocol stack, z-wave physical layer, z-wave security, z-wave MAC layer basics,

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