Sigfox

Introduction
Sigfox is a LPWAN technology characterized by long range and low power consumption. It is an entirely proprietary technology that provides network operator services. It is very easy to set up but you need to pay fees to gain access to the sigfox network, and you cannot control the infrastructures used in your communication.

Technological description
Sigfox is one of the first technologies that appeared on the market. It is an entirely proprietary LPWAN communication network, characterized by a range of up to 10km and a very low power consumption. Like the other LPWAN technologies, it uses Sub-GHz ISM band but offers low data rate of only several tens of kbps. Its noise robustness comes from its narrow-band modulation scheme. Sigfox in itself provides no encryption of the data, and all security mechanisms must be implemented at the application level if needed. Sigfox works as a network provider: the sigfox company has established a wide network coverage by installing antennas around the world. They act as network operator by offering access to their infrastructure by paying connection forfeit. This way of functioning has both advantages and drawbacks:
 * any sigfox application is very easy to set up and requires quasi no technical knowledge, and the development process is thus very cheap
 * you must pay recurrent fees in order to own access to the network, and you have absolutely no control over the infrastructure and the technology which your application is using

Sources and further information
http://www.sigfox.com

http://www.radio-electronics.com/info/wireless/sigfox/basics-tutorial.php