Optimizing Priority Queuing Systems with Server Reservation and Temporal Blocking for Cognitive Radio Networks

被引:3
作者
Behera, Jnana Ranjan [1 ]
Imoize, Agbotiname Lucky [2 ]
Singh, Sudhansu Sekhar [1 ]
Tripathy, Subhranshu Sekhar [3 ]
Bebortta, Sujit [4 ]
机构
[1] KIIT Deemed Univ, Sch Elect, Bhubaneswar 751024, India
[2] Univ Lagos, Fac Engn, Dept Elect & Elect Engn, Lagos 100213, Nigeria
[3] KIIT Deemed Univ, Sch Comp Engn, Bhubaneswar 751024, India
[4] Ravenshaw Univ, Dept Comp Sci, Cuttack 753003, India
来源
TELECOM | 2024年 / 5卷 / 02期
关键词
cognitive radio networks; admission control; spectrum allocation; user authorization; priority queuing; MODEL;
D O I
10.3390/telecom5020021
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
In the domain of cognitive radio (CR), unlicensed users have the opportunity to efficiently use available spectrum bands without interfering with licensed primary users (PUs). Our study addresses the challenge of secondary user (SU) spectrum shortage due to high arrival rates of licensed users. We propose two models aimed at improving the average total waiting time for SUs in such scenarios. These models incorporate non-acquired and preemptive priority mechanisms within the M/D/1 model of a PU delay system. Through quantitative evaluations and Monte Carlo simulations, we evaluate the performance of these models. Our findings show significant improvements in average waiting time for both PUs and SUs, especially under the priority scheme. Furthermore, we explore these models in the context of real-time systems, considering the limited buffer capacity for both user types. This further improves the average waiting time for PUs and SUs in both priority schemes. Our contribution lies in providing effective solutions to mitigate SU shortages in CR networks, providing insight into priority-based approaches and real-time system considerations.
引用
收藏
页码:416 / 432
页数:17
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