New LTE-M modules with integrated GNSS boost industrial connectivity

u-blox has revealed two new LTE-M cellular module series, the SARA-R52 and LEXI-R52. These modules, developed for industrial applications, are based on the u-blox UBX-R52 cellular chip and are tailored for integrated and concurrent positioning and wireless communication needs. Typical IoT use cases include fixed and mobile applications such as metering and utility, asset tracking and monitoring, and healthcare.

A set of new features embedded within the u-blox UBX-R52 chip will enable users to dispense with further components to create their products. SpotNow is a new positioning feature unique to the company, which supplies position data with a 10m accuracy within a couple of seconds. It is intended for occasional tracking applications such as recycling waste dumpsters, elderly trackers, or cleaning machines. The uCPU feature enables users to run their own software within the chip without employing an external MCU. On the other hand, the uSCM (Smart Connection Manager) is developed for automatic connectivity management to accomplish either best performance or lowest power consumption, for example, when a connection is lost and needs to be re-established.

The new series also presents a new combo module developed to deliver simultaneous GNSS and cellular connectivity – an important attribute for applications needing continuous or cyclic tracking. The SARA-R520M10 combo module has an integrated M10 GNSS receiver and provides concurrent tracking with low-power consumption, better TTFF, and enhanced RF sensitivity. It is tailored for users who seek the simplicity of a pre-integrated cellular and GNSS solution.

Many LTE-M modules only provide an RF output power of 20-21dBm, whereas the new series offers 23dBm, supplying stable connectivity in challenging coverage conditions. The LEXI-R52 offers the same features as the SARA-R52 but in a smaller form factor (16mm x 16mm x 2mm), ideal for ultra-small applications like wearables.