High Data Rate, Adaptive, Inter-Networked Proximity Communications for Space
Funded by: European Space Agency (ESA)
Project Objectives:
To investigate the existing terrestrial technologies and evaluate their suitability for Moon exploration scenarios;
To identify the means to implement the technologies as well as all the modifications required to existing hardware and software/firmware;
To design a network card unit to be integrated into a series of target devices: perform the architectural design of the flight unit and the design and implementation of the relevant breadboard prototypes;
To demonstrate compliance with the requirements via review of design, analysis, and test on the breadboard prototypes.
My role:
Studied functional, performance, and interface requirements for high data rate Lunar proximity communication links
Designed Flight model and bread-board model considering several trade-offs
Developed testbed using SDR and COTS components for in-lab validations (4G-LTE eNB<->UE, 5G-NR gNB<->nrUE links, IEEE 802.11a/g/n links and, Core Network)
Use case
Breadboard design for in-lab validations
Figure-1: Usage of LTE network for long distance links while WiFi for short distance links
Figure-2: Once a WiFi client moves away from the LTE UE ( which also acts as a WiFi hotspot ), it gets disconnected. In such cases, other WiFi nodes can establish connection with the moved client using mesh network, essestially closing the connected loop as can be seen in the figures below.
Figure-3: Re-establishment of connection via mesh networking between the WiFi clients.
Software used: https://github.com/srsran/srsRAN_4G