Comark RF500 Manual de usuario descargar pdf (Pagina 13)

Overview of RF500 Mesh Networking

The RF500 Wireless Monitoring System uses the IEEE 802.15.4 radio transmission

standard to implement a radio mesh network.

A mesh network is comprised of the following devices:

• Gateway

• Mesh Transmitter

• Transmitter

On installation each transmitter is associated with a particular Gateway by serial number.

Messages are transferred between transmitters and the Gateway using two-way

communication with acknowledgement of successful message reception.

Transmitters which are physically close to their associated Gateway such as transmitter A

in Figure 7 below, will most likely transmit directly to it. Others such as transmitter B which

are further away rely on meshing transmitters to forward messages to and from the

Gateway on their behalf.

The route taken by the message can vary depending on network load and link reliability.

The ability to dynamically reconfigure the network is termed self-healing. In the figure

below the self-healing ability is shown.

Mesh Transmitter

Gateway

Transmitter

Data transfer interrupted

transmitter continues to

store data.

Transmitter reroutes to

self-heal network and

transfers stored data.

Figure 7 - A Typical Mesh Network

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Comark RF500 Manual de usuario Pagina 13