提出了快速控制信道选择算法用来提高控制信道的可靠性和有效性.算法利用了信号收发和处理所产生的时延,实现了次用户间快速交换控制信息的目的;优化了频谱空洞选择过程,降低了控制信道占用的频谱空洞比例;通过临时借用业务信道所用频谱空洞抵抗主用户占用频谱空洞造成的控制信道中断.理论推导和仿真验证结果证明了该算法在性能上的提升. A fast control channel selection algorithm is proposed to improve the reliability and validity of the control channel.The algorithm takes advantage of the delay caused by sending and receiving signals and achieves the purpose of rapid exchange of control information between secondary users and optimizes the selection process of spectrum holes , Reducing the ratio of spectrum holes occupied by the control channel and preventing the control channel interruption caused by the main user occupying the spectrum hole by temporarily borrowing spectrum holes used in the traffic channel.The theoretical derivation and simulation verification results show that the performance of the algorithm is improved.