TY - GEN
T1 - Impact of the primary resource occupancy information on the performance of cognitive radio networks with VoIP traffic
AU - Castellanos-Lopez, S. Lirio
AU - Cruz-Pérez, Felipe A.
AU - Rivero-Angeles, Mario E.
AU - Hernandez-Valdez, Genaro
PY - 2012
Y1 - 2012
N2 - In this paper, the relevance of considering the primary network resource occupancy information on the admission criterion of new secondary VoIP sessions in cognitive radio networks (CRNs) is investigated. In particular, the performance of two different call admission control (CAC) strategies whose admission criterion is based either on the total number of primary and secondary sessions or only on the number of sessions of secondary users is compared. System performance is evaluated in terms of the most relevant quality of service metrics for VoIP traffic at both call and packet level. Numerical results clearly show that including primary resource occupancy information on the CAC strategy is an effective mean to improve system performance, especially for low to moderate traffic loads. For instance, assuming that voice toll quality is required, packet dropping probability is reduced more than 30% when primary resource occupancy information is additionally used on the CAC strategy.
AB - In this paper, the relevance of considering the primary network resource occupancy information on the admission criterion of new secondary VoIP sessions in cognitive radio networks (CRNs) is investigated. In particular, the performance of two different call admission control (CAC) strategies whose admission criterion is based either on the total number of primary and secondary sessions or only on the number of sessions of secondary users is compared. System performance is evaluated in terms of the most relevant quality of service metrics for VoIP traffic at both call and packet level. Numerical results clearly show that including primary resource occupancy information on the CAC strategy is an effective mean to improve system performance, especially for low to moderate traffic loads. For instance, assuming that voice toll quality is required, packet dropping probability is reduced more than 30% when primary resource occupancy information is additionally used on the CAC strategy.
KW - AMC
KW - Cognitive radio networks
KW - VoIP
KW - call admission control
KW - joint call and packet level teletraffic analysis
KW - on/off traffic
KW - packet buffering
KW - time-scale decomposition
UR - http://www.scopus.com/inward/record.url?scp=84869444301&partnerID=8YFLogxK
U2 - 10.4108/icst.crowncom.2012.248483
DO - 10.4108/icst.crowncom.2012.248483
M3 - Contribución a la conferencia
AN - SCOPUS:84869444301
SN - 9781936968558
T3 - Proceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2012
SP - 338
EP - 343
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 -