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为在认知无线电系统中实现对频谱的有效管理,文中提出了一种基于多标拍卖的信道分配机制,并给出了三种分配规则:吞吐量最大规则、效用公平规则以及时间公平规则。最后通过仿真验证了三种分配规则下的系统性能,仿真结果说明,进行信道分配时利用吞吐量最大规则能使系统吞吐量达到最大,采用效用公平规则能达到最佳效用公平性。使用时间公平规则可保证用户在为传输文件而竞争频谱资源过程中的时间公平,且文件的平均传输时间最少、时延最小。
In order to realize efficient spectrum management in cognitive radio systems, a multi-label auction based channel allocation mechanism is proposed in this paper. Three allocation rules are given: the maximum throughput rule, the utility fairness rule and the time fairness rule. Finally, we verify the system performance under the three allocation rules by simulation. The simulation results show that maximizing the throughput can maximize the system throughput when using channel allocation, and the fairness of utility can achieve the best utility fairness. The use of time fairness rules ensures that users have fair time in competing for spectrum resources for file transmission, with the least file transfer time and latency.