LTE Category 1 (CAT-1) is a medium speed wireless communication standard specifically designed for Internet of Things (IoT) and Machine to Machine (M2M) use cases.
What is CAT-1
Long Term Evolution (LTE) is a fourth-generation (4G) connectivity standard. Over time, it has given rise to a number of low power, wide area network (LPWAN) variants that are designed to support industrial, commercial and consumer-facing IoT projects.The LTE Category 1 standard was first introduced in 2008, making it the first-ever IoT-specific LTE variant. The single antenna version, CAT-1 BIS, was introduced in 2016.
Data rates
CAT-1 offers maximum speeds of 10 megabytes-per-second (Mb/s) for downlink and 5Mb/s on the uplink. This makes it suitable for a wide range of feature-rich M2M and IoT applications, including those that require video streaming. CAT-1 also supports Voice over LTE (VoLTE), making it suitable for uses such as remote entry control and assisted living, where there’s a need for voice support. (See below for a list of use cases).
Latency
The CAT-1 standard has a latency of between 50 and 100 milliseconds. This compares favourably to lower-powered LTE IoT standards such as Cat M1 and NB-IoT, where the latency can be up to a few seconds. This enhances the user experience for functions such as data streaming, remote monitoring and surveillance.
Power usage
CAT-1 supports idle and sleep modes, maximising power efficiency. This helps to extend battery life and device longevity. Particularly useful for industrial devices deployed in hard-to-reach locations, it can mean less frequent maintenance and lower total cost of ownership.
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