TY - GEN
T1 - Spectrum availability recheck scheme (SARS) for cognitive radio systems with mobility
AU - Lee, Woongsup
AU - Cho, Dong Ho
PY - 2012
Y1 - 2012
N2 - We consider the change of spectrum availability which is caused by the mobility of a cognitive radio (CR) user. Given that the CR user should not interfere with a primary user (PU), it should periodically check the availability of the CR band which is being used. Herein, we refer the scheme to check the availability of spectrum as SARS (Spectrum Availability Recheck Scheme). We propose a SARS for both CR systems which use a geo-location database to find vacant band and CR systems which use spectrum sensing to find vacant band. The proposed SARS adaptively changes its operation according to the velocity of a CR user. Through the analysis and the simulation results, we have shown that the spectrum availability of a CR user can be efficiently verified by using proposed SARS, when the CR user moves. We also have shown that the overheads caused by our SARS is low.
AB - We consider the change of spectrum availability which is caused by the mobility of a cognitive radio (CR) user. Given that the CR user should not interfere with a primary user (PU), it should periodically check the availability of the CR band which is being used. Herein, we refer the scheme to check the availability of spectrum as SARS (Spectrum Availability Recheck Scheme). We propose a SARS for both CR systems which use a geo-location database to find vacant band and CR systems which use spectrum sensing to find vacant band. The proposed SARS adaptively changes its operation according to the velocity of a CR user. Through the analysis and the simulation results, we have shown that the spectrum availability of a CR user can be efficiently verified by using proposed SARS, when the CR user moves. We also have shown that the overheads caused by our SARS is low.
UR - http://www.scopus.com/inward/record.url?scp=84869401370&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84869401370&partnerID=8YFLogxK
U2 - 10.4108/icst.crowncom.2012.248116
DO - 10.4108/icst.crowncom.2012.248116
M3 - Conference contribution
AN - SCOPUS:84869401370
SN - 9781936968558
T3 - Proceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2012
SP - 309
EP - 314
BT - Proceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2012
T2 - 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Ntworks and Communications, CROWNCOM 2012
Y2 - 18 June 2012 through 20 June 2012
ER -