The mioty architecture portrays a star network where one central base station aggregates low data-rate messages from thousands of battery-powered sensors operating at the edge. Enabled through the MIOTY™ RF Wireless Link characterized by the Telegram Splitting approach, communication between the base station and end nodes can be achieved over up to 15 km range (in flat terrain) utilizing worldwide license-free sub GHz bands (133-966 MHz).
A typical mioty network consists of the following elements:
Figure: A typical mioty network architecture
Key components and their functions are further explained as follows:
Devices, which send mioty modulated wireless messages to the base stations or receive messages wirelessly back from the gateways.
Mioty sensor nodes can capture critical field data such as environmental parameters or machinery KPIs and transmit them to a base station at pre-defined time intervals using the mioty RF link. It can be equipped with sensors, actuators and communication components such as radio frequency (RF)-chips, transceivers and system-on-chip (SoC)-solutions, or RF-modules. In addition end-points also have a power source such as a battery/mains energy or a energy harvesting transducer.
The base station is the network device receiving messages from the devices via mioty air interface and forward them to the mioty service center.
A mioty base station collects messages from all sensor nodes that have been attached to it1, processes and decrypts network control data and forwards user data to backend through backhaul connection with higher throughput (e.g. Ethernet, Wi-Fi…). In bi-directional communica-tion, it generates downlink2 messages based on payload received from the backend. These messages are then transmitted to the respective sen-sor nodes for remote command and control applications. A mioty network can incorporate more than one base station, in which case, the same message can be received by multiple base stations.
Service & Application Center
The service center is managing a mioty network consisting of base stations. It is responsible for routing the data between end-point applications and the application center.
The service center is responsible for device and network management together with key management of the network-level cryptography. When two or more base stations receive and forward the same mes-sage, it additionally carries out de-duplication task by eliminating re-peated data. In bi-directional communication, the service center further tracks downlink transmission slots and duty cycles, as well as decides which base station is allowed to answer which specific sensor nodes. All devices (sensor nodes and gateways) operating in the same mioty network are registered at the service center for admin-istration and operational control.
The application center interfaces applications to the mioty network via various available interface protocols (such as MQTT, Rest, COAP).
The application center serves as a point of contact with end users or application operators. Node credentials can be entered once here and accordingly transferred to the service center for registration of sensor nodes in the mioty network. When receiving messages from the service center, the application center decrypts and decodes user data by extracting application-specific information (e.g. temperature, pres-sure levels…) from the generic binary packets. Interpretable user data are then forwarded to the application platform. It might connect, configure and manage thousands of end-points.
The IoT platform typically consists of a database and tools for visualization and analyzing the application data. It can be easily integrated into standard cloud platforms.
The IoT Platform stand for any server or cloud computing systems whose core functions are data storage and analytics. Patterns can be identified and visualized on user interfaces for predictions and execution of timely responses.