TY - JOUR
T1 - DSCA
T2 - Dynamic spectrum co-access between the primary users and the secondary users
AU - Backens, Jonathan
AU - Xin, Chunsheng
AU - Song, Min
AU - Chen, Changlong
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - In the current architecture of dynamic spectrum access, secondary users (SUs) only opportunistically access the spectrum of primary users (PUs). The resurgence of PUs disrupts secondary communications, which can result in poor performance for SUs. In this paper, we propose a novel architecture for dynamic spectrum access, termed dynamic spectrum co-access (DSCA), to enable the PU and the SU to simultaneously access the licensed spectrum. With DSCA, SUs transparently incentivize PUs through increasing the PU performance so that SUs can access the spectrum simultaneously with PUs; hence, there is no disruption to secondary communications due to the resurgence of PUs. We derive a mathematical model to formulate the minimum incentives for the spectrum co-access between the PU and the SU and to compute the region of co-access to determine the SUs that can co-access with a given PU. An algorithm is also developed to select the co-access primary and secondary links to maximize network performance. Numerical results indicate that DSCA significantly improves performance compared with the current architecture of dynamic spectrum access.
AB - In the current architecture of dynamic spectrum access, secondary users (SUs) only opportunistically access the spectrum of primary users (PUs). The resurgence of PUs disrupts secondary communications, which can result in poor performance for SUs. In this paper, we propose a novel architecture for dynamic spectrum access, termed dynamic spectrum co-access (DSCA), to enable the PU and the SU to simultaneously access the licensed spectrum. With DSCA, SUs transparently incentivize PUs through increasing the PU performance so that SUs can access the spectrum simultaneously with PUs; hence, there is no disruption to secondary communications due to the resurgence of PUs. We derive a mathematical model to formulate the minimum incentives for the spectrum co-access between the PU and the SU and to compute the region of co-access to determine the SUs that can co-access with a given PU. An algorithm is also developed to select the co-access primary and secondary links to maximize network performance. Numerical results indicate that DSCA significantly improves performance compared with the current architecture of dynamic spectrum access.
KW - Cognitive radio network coexisting
KW - dynamic spectrum co-access (DSCA)
KW - simultaneous dynamic spectrum access
UR - http://www.scopus.com/inward/record.url?scp=84923221630&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84923221630&partnerID=8YFLogxK
U2 - 10.1109/TVT.2014.2322011
DO - 10.1109/TVT.2014.2322011
M3 - Article
AN - SCOPUS:84923221630
SN - 0018-9545
VL - 64
SP - 668
EP - 676
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 2
M1 - 6810895
ER -