u-blox recently announced the SARA N3, a multiband NB-IoT module that supports a preliminary set of 3GPP Release 14 features (LTE Cat NB2). The SARA N3 is available in two variants: one dedicated to China and another that can operate across multiple bands on any NB-IoT network globally.
The u-blox firmware over the air (uFOTA) client/server solution with Lightweight M2M (LwM2M) allows SARA N3 to be remotely provisioned with additional features. LwM2M is a more lightweight solution as compared to OMA DM and is therefore ideal for providing critical firmware updates to IoT devices. In this way, the module can ultimately become 5G compliant. It also supports the creation of dynamic LwM2M objects, giving customers high levels of feature customisation through the ability of scripting their own configurable objects.
The SARA N3 provides a comprehensive set of features and protocols that NB-IoT based applications will benefit from, including TCP, HTTPS, CoAP, DTLS and MQTT. With its ultra-low power consumption profile and the ability to configure voltage domains, the module is optimised to operate on a single cell primary battery for 10+ years, eliminating the need for frequent maintenance visits.
Other features include a ‘last gasp’ function that lets the module send one last message should the power fail unexpectedly, and protection against software attacks by detecting potential jamming signals.
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