Goal-Oriented Communications for Interplanetary and Non-Terrestrial Networks

Abstract: The accelerated pace of space exploration and satellite connectivity calls for scalable communication network architectures that can effectively cater for increasing numbers of bursty flows, such as those occurring in remote monitoring and actuation. Communications in Space face unique challenges including highly variable delays and disruptions that sometimes preclude real-time signaling and end-to-end acknowledgements. In this paper we provide a vision for tackling these fundamental challenges by exploiting recent progress in goal-oriented communication. Our vision for Goal-Oriented Networking in Space is built on three pillars: (1) principles and decision metrics for goal-oriented sampling and multi-user scheduling, that can handle highly variable delay processes that contain memory, (2) grant-free access policies for massive machine-type communications that replace exogenous arrivals with goal-oriented traffic shaping, and (3) flow control mechanisms that exploit the cross-layer operability at application and link layers of Delay/Disruption Tolerant Networking (DTN) protocols.