The Internet of Things by satellite will become increasingly accessible

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The Internet of Things by satellite will become increasingly accessible

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Recent research presents efficient, low complexity algorithms so that the Internet of Things via satellite is increasingly accessible, thanks to the implementation of advanced random access schemes by satellite.
The research is developed in a study published in International Journal of Satellite Communications and Networking, of which one of its authors is Giuseppe Cocco, a researcher at the Department of Information and Communication Technologies (DTIC) and at the German Aerospace Center (DLR), along with researchers from the European Space Agency.
In this case, the volume of control data needed to establish a connection with the satellite network may exceed the amount of useful data (payload) transmitted by the sensor.
Although this may not seem like a problem if dealing with a single sensor, in the case of satellite networks the number of sensors connected to a single satellite can be extremely high.
In addition, removing or reducing control information in M2M traffic could lead to signals from different sensors interfering with each other, which could cause a loss of sent information and, in the event of heavy traffic, even to a network collapse.
In this context it is understood how M2M traffic control information is a significant but necessary waste of resources to avoid interference, which can lead to the need to use a broader bandwidth, bigger and more expensive satellites or more of them, a higher cost of M2M communication and a negative impact on the development of the IoT.
To solve this problem, in recent years new advanced systems of multiple random access have been developed that allow greatly limiting control information without affecting the performance of the network.
We have studied the impact on the entire system of various elements present in real systems (such as imperfections in low cost electronics that are typical of many IoT nodes) and have developed algorithms that help strengthen the system against them

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