European Space Agency


The objective of this project is to design and demonstrate solutions for compact and energy efficient Machine to Machine (M2M) user terminals for direct, massive uncoordinated access via satellite.

A novel access scheme will be developed for optimizing energy management at physical and access layer, looking at a global access network and targeting low duty cycle and volume traffic.

Beside the smart energy management, the terminals shall be able to do some kind of energy harvesting for extending significantly the mean time between maintenance of the devices.

The project task are the following:

  • System scenario, use case definitions, and technical requirements
  • Consolidated air interface design specifications and functional benchmarking
  • Detailed user terminal design
  • User terminal prototype
  • Test plan and verification procedures
  • Verification platform
  • Test campaign results


Machine-to-Machine Communications (M2M) will interconnect billions of devices for a wide range of applications with low duty cycle and low volume traffic over the Internet of Things (IoT). A high number of small IoT nodes will serve for monitoring applications in remote locations, where in general the energy supply over the power grid is not possible. The maintenance of these devices will be difficult or not possible. These IoT nodes can only accommodate batteries with limited which is a challenging constraint for the energy supply.


  • Extending significantly the mean time between maintenance
  • Reducing the maintenance costs
  • Increasing live time of terminals
  • Enhanced system capacity (due to efficient resource sharing of the nodes)


  • Enabling resource sharing among a large number of uncoordinated nodes
  • Energy efficient air-interface
  • Energy harvesting capabilities
  • Smart battery management

System Architecture

The tests & verification procedure of the entire system will be performed with an entire setup / testbed of various different equipments as shown below to ensure compliance to the system requirements.

This testbed will be used to perform at least:

  • End-to-end physical and MAC layer tests
  • Demodulator input signal quality measurements
  • Physical layer adjustments
  • Channel performance measurements
  • Packet loss statistics measurements
  • Energy consumption statistic measurements
  • Battery capacity estimation measurements
  • Emulation of satellite channel models






Kick-Off Meeting



System Requirements Review

end Nov-18


Technology Selection Review

mid Feb-19


Verification Readiness Review

mid Sep-19


Final Review

mid Dec-19

Current status

Evaluation of use cases has been done.

From the selected use cases, we will:

  • develop a system scenario,
  • deduct the technical requirements,
  • discuss the frequency bands with respect to suitability for satellite communications,
  • indicate the regulatory requirements to the specific frequency bands and,
  • discuss suitable combinations of space segment architectures.

Status date

Tuesday, February 12, 2019 - 09:43