The cognitive radio network has been proposed to overcome the frailty of existing spectrum allocation strategies, by dynamically accessing the licensed spectrum instead of conventional static spectrum access. Thereby, the increasing traffic on the unlicensed wireless spectrum is diverted to unused licensed spectrum bands for providing spectrum space to new wireless users. Wireless services have a diverse quality of service requirements. Accordingly, the proposed routing protocol selects a distinct channel at every hop and a distinct route based on the service requirements. Delay and SU-to-PU interference are recognized as the quality of service requirements of class-I and class-II types of traffic. Subsequently, the mathematical equations are derived to estimate the spectrum band-specific link delay and SU-to-PU interference ratio. The derived equations are then used for channel and route selection. The proposed work is simulated using ns-2 and is then compared with the existing work. Simulation results show the performance improvement of the proposed work in terms of throughput, delay, and interference to PU.

已经提出了认知无线电网络，以通过动态访问许可频谱而不是传统的静态频谱访问来克服现有频谱分配策略的脆弱性。从而，未许可的无线频谱上增加的业务量被转移到未使用的许可的频谱频带，以向新的无线用户提供频谱空间。无线服务具有多种服务质量要求。因此，所提出的路由协议基于服务需求在每一跳上选择不同的信道和不同的路由。延迟和SU-to-PU干扰被视为I类和II类流量的服务质量要求。随后，推导数学方程式以估计特定于频谱频带的链路延迟和SU-PU干扰比。然后将导出的方程式用于通道和路线选择。拟议的工作是使用ns-2模拟的，然后与现有工作进行比较。仿真结果表明，在吞吐量，延迟和对PU的干扰方面，所提出工作的性能有所提高。