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Mobile Information Systems
Volume 2016, Article ID 4313527, 12 pages
Research Article

Licensed Shared Access System Possibilities for Public Safety

1Centre for Wireless Communications, University of Oulu, 90014 Oulu, Finland
2Bittium Wireless Ltd., Tutkijantie 7, 90570 Oulu, Finland

Received 11 March 2016; Accepted 30 May 2016

Academic Editor: Fernando Casadevall

Copyright © 2016 Kalle Lähetkangas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We investigate the licensed shared access (LSA) concept based spectrum sharing ideas between public safety (PS) and commercial radio systems. While the concept of LSA has been well developed, it has not been thoroughly investigated from the public safety (PS) users’ point of view, who have special requirements and also should benefit from the concept. Herein, we discuss the alternatives for spectrum sharing between PS and commercial systems. In particular, we proceed to develop robust solutions for LSA use cases where connections to the LSA system may fail. We simulate the proposed system with different failure models. The results show that the method offers reliable LSA spectrum sharing in various conditions assuming that the system parameters are set properly. The paper gives guidelines to set these parameters.