DSCA: Dynamic Spectrum Co-Access Between the Primary Users and the Secondary Users

被引:10
作者
Backens, Jonathan [1 ]
Xin, ChunSheng [2 ]
Song, Min [3 ]
Chen, Changlong [4 ]
机构
[1] Christopher Newport Univ, Dept Phys Comp Sci & Engn, Newport News, VA 23606 USA
[2] Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA
[3] Michigan Technol Univ, Dept Comp Sci, Houghton, MI 49931 USA
[4] Univ Toledo, Dept Elect Engn & Comp Sci, Toledo, OH 43606 USA
基金
美国国家科学基金会;
关键词
Cognitive radio network coexisting; dynamic spectrum co-access (DSCA); simultaneous dynamic spectrum access; COGNITIVE RADIO;
D O I
10.1109/TVT.2014.2322011
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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.
引用
收藏
页码:668 / 676
页数:9
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