Cell quality measurements for cellular iot systems

A method for determining cell quality measurements, the method comprising:

• receiving, at a modem, a first cellular signal from a first cell of one or more cells;
• converting, at the modem, the first cellular signal from the first cell to a first frequency domain signal;
• generating, based on the first frequency domain signal, a first channel estimation and a first RSSI, wherein generating the first channel estimation is based on a least squares estimation, a smoothing channel filter, and a time-domain average;
• determining, based on the first channel estimation, a first noise variance, a first RSRP, a first RSRQ, and a first SINR.

A modem comprising at least one processor and at least one memory coupled to the processor, wherein the processor is configured to;

• receive, at the modem from an antenna, a first cellular signal from a first cell of one or more cells;
• convert, at the modem, the first cellular signal to a first frequency domain signal;
• generate, based on the first frequency domain signal, a first channel estimation and a first RSSI, wherein generating the first channel estimation is based on a least squares estimation, a smoothing channel filter, and a time-domain average;
• and
• determine, based on the first channel estimation, a first noise variance, a first RSRP, a first RSRQ, and a first SINR.