IoT sensors and network between nodes

Miguel Bento

Other Parts Discussed in Thread: CC2630

I want to construct a network of sensors and i want that each node communicates to a gateway. The gateway receives all the nodes data and sends it to the cloud. The battery lifetime is very important.
Each gateway may aggregate the data of 30 nodes, and the network must adapt itself if one or more nodes are removed of the network.

I was seeing the CC2630 and it seems to be a good approach, but i still have some doubts.

My questions are: What is the best communication stack between the nodes and the gateway (ZigBee or 6LoWPAN) ? What is the best topology to use (each node communicates with the gateway or to make a mesh network)? Should i use different uC to the nodes and the gateway (CC2630 and MSP430, for example)?

over 9 years ago

0 YiKai Chen over 9 years ago

Guru 735515 points

Both Zigbee and 6LoWPAN support mesh network and are fine with you application. If you run Contiki 6LoWPAN on CC2630, everything would be IPv6 and you can easily bridge messages with a 6LoWPAN edge router. If you use Zigbee, you will need a Zigbee gateway to translate Zigbee messages to internet.

0 Miguel Bento over 9 years ago in reply to YiKai Chen

Intellectual 640 points

For the gateway I am planning to use an GSM module to send he data to the cloud. Do you think that one CC2630 can communicate to the ZigBee nodes and the GSM module, or I need to add a new uC to do the task?

0 YiKai Chen over 9 years ago in reply to Miguel Bento

Guru 735515 points

It should be no problem for CC2630 to connect with GSM module. However, I think you will need to make CC2630 act as Zigbee router or coordinator to communicate with other Zigbee node but The flash size of CC2630 is not enough so it can only act as Zigbee end device under SoC mode. You will need an extra uC to use ZAP*ZNP architecture to make CC2630 act as coordinator or router to communicate with other Zigbee nodes.

0 Miguel Bento over 9 years ago in reply to YiKai Chen

Intellectual 640 points

So it is ok if I use the CC2630 and the MSP430? Or do you suggest something else?

0 YiKai Chen over 9 years ago in reply to Miguel Bento

Guru 735515 points

If you choose ZAP+ZNP architecture, MSP430 is fine. TI provides ZAP examples running on MSP430EXP5438.

0 Miguel Bento over 9 years ago in reply to YiKai Chen

Intellectual 640 points

So, if I have a CC2630 in each node and a CC2630+MSP430 in the gateway, I will be able to send data from the nodes to the gateway and from the gateway to the nodes?
Sorry, but is just to be sure.

0 YiKai Chen over 9 years ago in reply to Miguel Bento

Guru 735515 points

Yes.

0 Miguel Bento over 9 years ago in reply to YiKai Chen

Intellectual 640 points

Thank you very much

0 YiKai Chen over 9 years ago in reply to Miguel Bento

Guru 735515 points

You are welcome.

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IoT sensors and network between nodes