TY - GEN
T1 - Dynamic spectrum leasing strategies for coordinated cognitive radio networks with delay-tolerant traffic
AU - Ramirez-Reyna, Mario A.
AU - Cruz-Perez, Fel IPe A.
AU - Rivero-Angeles, Mario E.
AU - Hernandez-Valdez, Genaro
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/6/25
Y1 - 2014/6/25
N2 - In this paper, dynamic spectrum leasing strategies (with and without anticIPated resource leasing) for coordinated cognitive radio networks with delay-tolerant (best effort) traffic are proposed and analyzed to mitigate the effects of unpredictable resource availability. To exploit the tolerance to delay a buffer for preempted secondary calls is considered. From the mathematical point of view, our contribution is to develop a teletraffic model for the performance evaluation of the proposed strategies. The tradeoff between the spectrum leasing cost and system Erlang capacity is also investigated. For a given maximum allowed number of simultaneously rented channels and Quality of Service (QoS) requirement in terms of new call blocking probability, maximum Erlang capacity is obtained for different traffic scenarios. Numerical results reveal that system performance strongly depends on the value of the mean secondary channel holding time relative to the mean primary channel holding time. Finally, the cost per capacity and mean transmission delay as a function of both the utilization factor of the primary resources and the maximum allowed number of simultaneously rented channels is evaluated. It is shown that anticIPated resource leasing is an effective mechanism to increase the possibility to have available resources when needed for the secondary network.
AB - In this paper, dynamic spectrum leasing strategies (with and without anticIPated resource leasing) for coordinated cognitive radio networks with delay-tolerant (best effort) traffic are proposed and analyzed to mitigate the effects of unpredictable resource availability. To exploit the tolerance to delay a buffer for preempted secondary calls is considered. From the mathematical point of view, our contribution is to develop a teletraffic model for the performance evaluation of the proposed strategies. The tradeoff between the spectrum leasing cost and system Erlang capacity is also investigated. For a given maximum allowed number of simultaneously rented channels and Quality of Service (QoS) requirement in terms of new call blocking probability, maximum Erlang capacity is obtained for different traffic scenarios. Numerical results reveal that system performance strongly depends on the value of the mean secondary channel holding time relative to the mean primary channel holding time. Finally, the cost per capacity and mean transmission delay as a function of both the utilization factor of the primary resources and the maximum allowed number of simultaneously rented channels is evaluated. It is shown that anticIPated resource leasing is an effective mechanism to increase the possibility to have available resources when needed for the secondary network.
KW - Erlang capacity
KW - Overlay cognitive radio networks
KW - call admission control
KW - dynamic spectrum leasing
KW - new call blocking and call forced termination probabilities
UR - http://www.scopus.com/inward/record.url?scp=84944318470&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2014.7136350
DO - 10.1109/PIMRC.2014.7136350
M3 - Contribución a la conferencia
AN - SCOPUS:84944318470
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
SP - 1200
EP - 1205
BT - 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014
Y2 - 2 September 2014 through 5 September 2014
ER -