Enjoy the world largest IoT network today. Learn more about SIGFOX.
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.
Sigfox delivers the network and the protocols required to allow an object to share its data from anywhere in the world.
UNB intrinsic ruggedness coupled with spatial diversity of the base stations offer great anti-jamming capabilities. UNB is extremely robust in an environment with other spread spectrum signals. UNB is the best choice to operate on the public ISM band.
The small footprint of UNB enables more simultaneous signals within the and the Sigfox protocol cuts down the radio frames size. These two qualities lead to a high capacity of the SIGFOX network.
The objects are not attached to a specific base station. They broadcast their messages which are received by any base station in the range (3 in average). There is no need for message acknowledgement. Spatial diversity coupled with the time and frequency diversity of the radio frames repetitions lead to high quality of service of the Sigfox network.
Sigfox delivers the network and the protocols required to allow an object to share its data from anywhere in the world.