ipv6 Star Topology over BLE(6lowpan) control some node over cloud proof of concepts

[Dan_sh]

Hello everyone:

Im developing a PAN and i noticed 6lowpan is good item.I have over 30 nodes (nRF52832) and some of the node are sensors for temperature and humidity and ... , some of nodes just have Relay function(on/off) and 4 of nodes have both relays and sensors functionality , i want to access nodes over web and cloud , i found out IPV6 over BLE is just supported Star tolology , so i should have one raspberry pi 3 as gatway and nodes connect to it over IPV6 , here i have some question:

1-Is this concept Right ?How is it possible?

2-How many nodes could be connect to a gatway(ipv6 over BLE)?

2-Is it possible to implement this scenario with some node are sensor , some node are control node and some of them have both functionality?

3-In ipv6 over BLE SDK example i just find out, "connect to gatway" established.How should i send data and what is the packet formats?(is it MQTT-SN?)

4-Is it possible to communicate with multiple nodes over cloud ? for example : read the temp from node #1 and Turn ON LED on node #2 and #9 at the same time?

[ovrebekk]

Hi

Regarding the number of nodes I see you already opened a separate case on that, so I will let you handle that there. 

Do you actually need to assign each node in your network a unique IPv6 address, or could you use some kind of gateway solution where you have a local network of nodes using some local addressing scheme, and a gateway that allow you to aggregate the data from the separate nodes and pass it to the cloud?

Best regards
Torbjørn

[Dan_sh]

Hello Torbjørn,

Thank you for reply.

The important  thing in this project is : access to all nodes over ipv6 over cloud or server , so it could be possible to use local ip for entire mesh ,but its better to communicate over ipv6.(that's why i found 6lowpan as a good solution for this project, but im not sure about maximum number of node or...)

Best Regards