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IntroductionLoRaWANNB-IoTPlatform integrations

Connect NB-IoT via LwM2M to AllThingsTalk IoT Platform

Lightweight M2M (LwM2M) is a protocol for IoT and M2M device management and service enablement. The LwM2M standard defines the application layer communication protocol between an LwM2M Server and an LwM2M Client which is located in an IoT device. It offers an approach for managing IoT devices and allows devices and systems from different vendors to co-exist in an IoT ecosystem.

Being specifically optimized for constrained NB-IoT devices, it uses CoAP (Constrained Application Protocol) to provides efficient, low-power, and secure management—including Firmware Over-the-Air (FOTA) updates and telemetry—tailored for narrow-band networks.

LwM2M support is currently in BETA testing and available only on ALSO IoT Platform

Configure device to send data to AllThingsTalk LwM2M server

  • Configure your device:
    • LwM2M server: coaps://also.allthingstalk.io:5684
  • Make sure that your device is configured to use LwM2M to send uplink data to the server

Create a device in your ground

  • In AllThingsTalk (ALSO IoT Platform), go to your ground and create a new device
  • You can use an existing device type or create a custom device
  • If you’re using custom device, you’ll need to create assets manually; make sure to use proper LwM2M objects naming, and replace / with _, e.g:
    • In LwM2M temperature sensor is represented by /3303/0/5700 object
    • To replicate this in the platform, create a numerical sensor asset, and set asset name to _3303_0_5700

Connect ground device to LwM2M network

  • Go to your device > SETTINGS > Connectivity
  • Select LwM2M from the dropdown menu
  • Add device credentials (check your device docs for proper format):
    • Endpoint: urn:imei:1116622534771 (example)
    • Identity: urn:imei:1116622534771 (example)
    • PSK: 14452AB766622BC65653 (example)
  • Connect the device

See your data land in the platform

  • As soon as your device registers on the LwM2M server, the data should land in your assets
  • You can also check Debug tab to see full payloads being sent and how they are parsed