title: A cognitive mobile BTS solution with software-defined radioelectric sensing.
abstract: Private communications inside large vehicles such as ships may be effectively provided using standard cellular systems. In this paper we propose a new solution based on software-defined radio with electromagnetic sensing support. Software-defined radio allows low-cost developments and, potentially, added-value services not available in commercial cellular networks. The platform of reference, OpenBTS, only supports single-channel cells. Our proposal, however, has the ability of changing BTS channel frequency without disrupting ongoing communications. This ability should be mandatory in vehicular environments, where neighbouring cell configurations may change rapidly, so a moving cell must be reconfigured in real-time to avoid interferences. Full details about frequency occupancy sensing and the channel reselection procedure are provided in this paper. Moreover, a procedure for fast terminal detection is proposed. This may be decisive in emergency situations, e.g., if someone falls overboard. Different tests confirm the feasibility of our proposal and its compatibility with commercial GSM terminals.
authors: Gradiant, CITEXVI, Campus Universitario, Vigo, Spain. jorgem@gradiant.org
authors: Jorge
authors: J
authors: Muñoz
authors: Javier Vales
authors: JV
authors: Alonso
authors: Francisco Quiñoy
authors: FQ
authors: García
authors: Sergio
authors: S
authors: Costas
authors: Marcos
authors: M
authors: Pillado
authors: Francisco Javier González
authors: FJ
authors: Castaño
authors: Manuel García
authors: MG
authors: Sánchez
authors: Roberto López
authors: RL
authors: Valcarce
authors: Cristina López
authors: CL
authors: Bravo
references: Sensors (Basel). 2011;11(9):8966-91
references: 22164116