Whatever Happened to Cat.1 bis?

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By Jamie Moss | 3Q 2021 | IN-6282


A No-Brainer to Support?


Category One Cable, generally referred to as Cat.1, has been the standout success story for cellular connectivity on the Internet of Things (IoT) during recent years. It has been popular with device manufacturers that want global coverage at the most cost-effective price point. While the dedicated cellular IoT technologies of LTE-M and Narrowband-IoT (NB-IoT) have been mainly national rollouts, with LTE-M focused on mobile and NB-IoT on stationary IoT device deployments. Roaming for both has been a secondary concern, especially for NB-IoT where entirely new reconciliation agreements need to be established between carriers based on the number of roaming devices and not the amount of data transported. Conversely, Cat.1 was already available on LTE networks worldwide, ready to be utilized properly for the first time, as its 10 Mbps throughout rate not being useful for consumer mobile broadband but providing plenty of bandwidth for IoT devices.

Cat.1 bis is an IoT-optimized version of Cat.1, its specific innovation being that it mandates the use of a single receive antenna. Previously, the 3GPP…

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