A Resource Scheduling Scheme for Spectrum Aggregation in Cognitive Radio Based Heterogeneous Networks

• Published in: China communications Vol. 12; no. 9; pp. 100 - 111
• Main Authors: Fu, Yunhai, Ma, Lin, Xu, Yubin
• Format: Journal Article
• Language: English
• Published: China Institute of Communications 2015; Harbin Institute of Technology Communication Research Center,Harbin,150001,China; Key Laboratory of Police Wireless Digital Communication,Ministry of Public Security,Harbin,150001,China
• Subjects: Bandwidth; CCS; Cognitive radio; CR-RS; heterogeneous networks; Long Term Evolution; Resource management; resource scheduling; Scheduling; spectrum aggregation; Telecommunication traffic; Throughput; 传输带宽; 异构网络; 聚合; 认知无线电; 调度方案; 资源调度; 频谱; heterogeneous networks; CR-RS; cognitive radio; spectrum aggregation; resource scheduling
• ISSN: 1673-5447
• DOI: 10.1109/CC.2015.7275248

In spectrum aggregation（SA）, two or more component carriers（CCs） of different bandwidths in different bands can be aggregated to support wider transmission bandwidth. The current resource scheduling schemes for spectrum aggregation are not optimal or suitable for CR based heterogeneous networks（Het Nets）. Consequently, the authors propose a novel resource scheduling scheme for spectrum aggregation in CR based Het Nets, termed as cognitive radio based resource scheduling（CR-RS） scheme. CR-RS has a three-level structure. Under a dynamic traffic model, an equivalent throughput of the CCs based on the knowledge of primary users（PUs） is given. On this basis, the CR users data transmission time of each CC is equal in CR-RS. The simulation results show that CR-RS has the better performance than the current resource scheduling schemes in the CR based Het Nets. Meanwhile, CR-RS is also effective in other spectrum aggregation systems which are not CR based HetNets.