Internet of Things
“As the Internet of things advances, the very notion of a clear dividing line between reality and virtual reality becomes blurred, sometimes in creative ways.” – Geoff Mulgan
Internet of Things (IoT) refers to the inter-networks of objects that communicate with other objects or computers through a network. These “Things” may include virtually any objects embedded with electronics, software, sensors, actuators, and network connectivity to collect and exchange data, communicate or control objects remotely. In other words, IoT potentially includes a large number of interconnected objects that connect the physical world to the virtual world, resulting in improved efficiency, accuracy and economic benefit. Previously, these connected devices rely heavily on Cellular, Wi-Fi or Bluetooth network. Those technologies are expensive to adopt and maintain, not to mention high in power consumption. As our requirement for these objects expands – indeed we need these devices to be deployed pervasively, in less accessible places, potentially everywhere – we need new technologies that are power efficient, low cost and simple to deploy at a massive scale.
We need to connect these devices with a low-power wide-area network, that is Sigfox.
RISE OF LPWAN
The rapid growing popularity of the internet of things has led to the rise of LPWAN. LPWAN is a technology designed to be low power, low cost and wide range. The perfect fit for IoT. As the internet of things revolution takes place, more and more wireless devices are deployed rapidly around the world in large volumes. With LPWAN, these devices are given life through connectivity that complement their needs in the form of low power, low cost and wide range for high volume and full autonomy. As such, 4 billion IoT devices have been forecasted to rely on LPWAN technologies by 2025!
Sigfox network operates on license-free sub-GHz ISM band using Ultra Narrow Band (UNB) modulation to exchange radio messages over the air. Messages are transferred at a data rate of 100 or 600 bits/s, depending on region. The combination of UNB modulation and low bit rate allows the network to achieve high network capacity and high sensitivity of its receivers, enabling long range transmission.
SIGFOX NETWORK (RCZ4) SPECIFICATIONS
- Frequency bands: 920.8Mhz Uplink, 922.3Mhz Downlink (License-free ISM band)
- Messages: Up to 140 uplink messages per device per day up and 4 downlink messages per device per day (Downlink requires device to initiate)
- Maximum Payload format per message: 12 bytes uplink from device, 8 bytes downlink to device (Device ID Key and time stamp are included in the Sigfox message header)
- Data rate: 600 bits per second
- Maximum power radiated per device: 24 dBm (ERP)
- Battery life: Up to 15 years depending on number of connections, sensor type and size
- Subscription fee: as low as US$1 /device/year (depending on volume of devices to be connected and number of connections per day)
*List of countries in RCZ4: Argentina, Australia, Colombia, Hong Kong, New Zealand, Singapore, Taiwan