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Performance analysis of cell-based spectrum handoff in cognitive radio vehicular centralized and ad-hoc networks
Vehicular Communications ( IF 5.8 ) Pub Date : 2022-07-11 , DOI: 10.1016/j.vehcom.2022.100503
Shanidul Hoque , Wasim Arif , Debarati Sen

Spectrum handoff (SHO) is an essential technique in dynamic spectrum access policy to guarantee seamless and robust service of a cognitive radio. Link maintenance probability (LMP), link failure probability (LFP), service completion probability (SCP), probability mass function (PMF), and expected number of SHOs are key measuring metrics to characterize SHO performances in cognitive radio vehicular centralized network (CR-VCNET) and cognitive radio vehicular ad-hoc network (CR-VANET). In this paper, we develop and model the performance measuring parameters for a non-stationary cognitive user (CU) considering both complete service and incomplete service period under two CR network situations: opportunistic situation (OS or CR-VANET) and negotiated situation (NS or CR-VCNET). This paper analyzes the impact of CU mobility and spectrum hole mobility on various performance measuring metrics to explore the characteristics and performance of the CR networks. This paper also presents the comparison results for expected number of SHOs and SCP of a CU with and without mobility in both CR-VCNET and CR-VANET. The results of performance metrics obtain for a non-stationary CU under the impact of service time distributions are significantly different for CR-VCNETs and CR-VANETs. In addition, we also present Monte-Carlo simulation of LMP, LFP, and probability mass function of SHO for a non-stationary CU to validate the proposed model.



中文翻译:

认知无线电车载集中和自组织网络中基于小区的频谱切换性能分析

频谱切换 (SHO) 是动态频谱访问策略中的一项基本技术,可确保认知无线电的无缝和稳健服务。链路维护概率 (LMP)、链路故障概率 (LFP)、服务完成概率 (SCP)、概率质量函数 (PMF) 和 SHO 的预期数量是表征认知无线电车载集中式网络 (CR- VCNET)和认知无线电车载自组织网络(CR-VANET)。在本文中,我们开发和建模了在两种 CR 网络情况下考虑完整服务和不完整服务周期的非平稳认知用户 (CU) 的性能测量参数:机会情况 (OS 或 CR-VANET) 和协商情况 (NS)或 CR-VCNET)。本文分析了 CU 移动性和频谱空洞移动性对各种性能测量指标的影响,以探索 CR 网络的特性和性能。本文还介绍了 CR-VCNET 和 CR-VANET 中具有和不具有移动性的 CU 的预期 SHO 和 SCP 数量的比较结果。对于 CR-VCNET 和 CR-VANET,在服务时间分布的影响下,非平稳 CU 获得的性能指标结果显着不同。此外,我们还对非平稳 CU 的 LMP、LFP 和 SHO 概率质量函数进行了 Monte-Carlo 模拟,以验证所提出的模型。本文还介绍了 CR-VCNET 和 CR-VANET 中具有和不具有移动性的 CU 的预期 SHO 和 SCP 数量的比较结果。对于 CR-VCNET 和 CR-VANET,在服务时间分布的影响下,非平稳 CU 获得的性能指标结果显着不同。此外,我们还对非平稳 CU 的 LMP、LFP 和 SHO 概率质量函数进行了 Monte-Carlo 模拟,以验证所提出的模型。本文还介绍了 CR-VCNET 和 CR-VANET 中具有和不具有移动性的 CU 的预期 SHO 和 SCP 数量的比较结果。对于 CR-VCNET 和 CR-VANET,在服务时间分布的影响下,非平稳 CU 获得的性能指标结果显着不同。此外,我们还对非平稳 CU 的 LMP、LFP 和 SHO 概率质量函数进行了 Monte-Carlo 模拟,以验证所提出的模型。

更新日期:2022-07-11
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