Piggy-back Network to enable Beyond5G Society supported by Autonomous Mobilities: Concept, Key technologies & Prototyping on a Service Robot Platform

This paper overviews the concept of the Piggy-back Network to enable upcoming Beyond 5G society supported by autonomous mobilities, the key technologies, and the prototyping on a service robot platform. The data transfer principle in the Piggy-back Network is based on the store-carry-forwarding (SCF) between cross-industrial autonomous mobilities such as service robots, wheelchairs, vehicles, buses, etc., with autonomous moving capabilities, which are practicing indoor or outdoor in a city or town. It is suggested that three types of technologies; to exploit the proximity time at a maximum, to create or increase the proximity chances, and to manage the distributed proximity chances, should be pursued. It is shown that the Shannon’ s communication capacity theorem is still useful to estimate the channel capacity achieved by a passing wireless communication using an extremely high frequency band by introducing an antenna model suitably. This paper focuses on a technology to enlarge the data volume that can be transferred by the passing communications and proposes to control the mobilities with “Stop/Slow-down & Go” or “Catch-up & Rendezvous” policy. It is demonstrated by prototyping a service robot platform that the mobility control with the “Stop & Go” policy increases the transferable data size with a little time loss.