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Licensed shared access field trial and a testbed for satellite‐terrestrial communication including research directions for 5G and beyond
Author(s) -
Höyhtyä Marko,
Majanen Mikko,
Hoppari Mika,
Järvensivu Pertti,
Kokkinen Heikki,
Ojaniemi Jaakko,
ReisKivinen Arto,
Pellay Olivier,
PhamMinh Duc,
Guta Maria
Publication year - 2020
Publication title -
international journal of satellite communications and networking
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.388
H-Index - 39
eISSN - 1542-0981
pISSN - 1542-0973
DOI - 10.1002/sat.1380
Subject(s) - testbed , computer science , telecommunications link , base station , frequency reuse , telecommunications , satellite system , satellite , computer network , communications satellite , cellular network , global positioning system , engineering , aerospace engineering , gnss applications
Summary This paper describes a licensed shared access (LSA) testbed and field trials using a live network. The testbed includes real 4G base stations and up to 1000 virtual base stations, in the spectrum sharing scenario between satellite and cellular systems. The trials focus on 5G pioneer bands 3.4–3.8 GHz and 24.25–27.5 GHz where a satellite system is operating in the downlink direction and a cellular system is accessing the same band. The designed testbed supports both frequency bands. The performance evaluation concerns evacuation and frequency change times using different types of base stations in 3.6 GHz, that is, how fast the system relinquishes the shared band to the primary user and continues transmission using another band. We show that our LSA system is scalable and able to support large number of base stations. In addition, we investigate how satellite systems could reuse International Mobile Telecommunication (IMT) bands to offer enhanced satellite communication services for land, maritime, and aeronautical applications. Preliminary simulations and analysis confirm the possibility to reuse IMT spectrum for satellite systems without causing harmful interference to the terrestrial system.