M2M Communications Using LTE CAT1
M2M Devices using LTE CAT1
Higher speeds with mobile broadband was initially the main driver for the development of 4G LTE standards by 3GPP. The rising popularity of smartphones pushed many carriers to launch and expand their 4G networks much faster than initially planned.
Although lower category LTE devices were included even in the initial releases of 3GPP LTE standards, these weren’t fully supported by the carriers or the device vendors as the broadband applications were dominant.
Most of the M2M applications however have a very low throughput demand. With the recent introduction of CAT 1 cellular modules into the market, the maximum throughput can be reduced to 10 Mbps. This in turn allows reductions in the cost, power consumption and the complexity of the device as huge savings on the processing power, clock speeds and memory requirements can be achieved.
This trend will continue with the introduction of CAT M1 and CAT M2 (NB-IoT) devices in future where the channel widths will also be reduced to 1.4 MHz and 200 KHz respectively. This allows even greater reductions in the complexity, power consumption and the cost of the devices. A link budget improvement of 15 to 20 dB is also expected to be achieved with these devices that will considerably enhance the coverage.