Connecting Malaysia to The Global IoT network
Xperanti has deployed a nationwide Low Powered Wide Area Network (LPWAN) using Sigfox and have become part of one global network currently spanning in 46 countries. Sigfox has designed its technology to meet the requirements of mass IoT applications using Ultra Narrow Band modulation; long device battery life-cycle, low device cost, low connectivity fee, high network capacity, and long range.
Ultra narrow band
Sigfox uses 200 kHz of the publicly available and unlicensed bands to exchange radio messages over the air (868 to 869 MhZ and 902 to 928 MHz depending on regions). Sigfox uses Ultra Narrow Band (UNB) technology combined with DBPSK and GFSK modulation. Each message is 100 Hz wide and transferred at 100 or 600 bits per second data rate depending on the region.
Random access to the radio frequency resource
The transmission is unsynchronized between the devices and the network. They broadcast each message 3 times on 3 different frequencies (frequency hopping). The base stations monitor the spectrum and look for UNB signals to demodulate.
Sigfox has tailored a lightweight protocol to handle small messages. An uplink message has a maximum 12-bytes payload and a downlink of 8 bytes. For a 12 bytes data payload, a Sigfox frame will use 26 bytes in total.