Spectrum Handoff is an essential process to assure unified, effective, and robust service for cognitive users (CUs) in cognitive radio cellular networks (CRCNs). This letter models the key handoff performance measuring metrics: link maintenance probability, link failure probability, and service completion probability of a non-stationary CU and analyzes the impact of mobility parameters to investigate the characteristics and behavior of a CRCN. In addition, we present the impact of general service time distributions on service completion probability. Results show that the service time distributions have a significant impact on spectrum handoff performance metrics for cases of higher mobility.

中文翻译：

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认知无线电蜂窝网络中频谱切换性能的评估

频谱切换是确保为认知无线电蜂窝网络 (CRCN) 中的认知用户 (CU) 提供统一、有效和稳健服务的重要过程。这封信对关键的切换性能测量指标进行建模：非固定 CU 的链路维护概率、链路故障概率和服务完成概率，并分析移动性参数的影响以研究 CRCN 的特性和行为。此外，我们还介绍了一般服务时间分布对服务完成概率的影响。结果表明，对于更高移动性的情况，服务时间分布对频谱切换性能指标有显着影响。