Proactive Spectrum Handover Based on Packet Scheduling Algorithm in Cognitive Radio Networks

MA Bin; LIAO Xiao-feng; XIE Xian-zhong

doi:10.3969/j.issn.0372-2112.2013.08.028

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Proactive Spectrum Handover Based on Packet Scheduling Algorithm in Cognitive Radio Networks

更新时间：2025-07-16

- Proactive Spectrum Handover Based on Packet Scheduling Algorithm in Cognitive Radio Networks
- Acta Electronica Sinica Vol. 41, Issue 8, Pages: 1628-1633(2013)
- 作者机构：
  
  1. 重庆大学计算机学院输配电装备及系统安全与新技术国家重点实验室,重庆,400044
  2. 重庆邮电大学计算机学院重庆市计算机网络与通信技术重点实验室,重庆,400065
  3. 重庆大学计算机学院输配电装备及系统安全与新技术国家重点实验室,重庆,400044
  4. 重庆邮电大学计算机学院重庆市计算机网络与通信技术重点实验室,重庆,400065
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.60973114, No.61170249, No.61271259);Science and Technology Research of Chongqing Municipal Education Commission (No.KJ120529, No.KJ130536);Fund of Chongqing Key Laboratory of Computer Network and Communication Technology (No.CY-CNCL-2010-02)
- DOI：10.3969/j.issn.0372-2112.2013.08.028
  CLC： TN929.5
- Published：2013
- 稿件说明：
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MA Bin, LIAO Xiao-feng, XIE Xian-zhong. Proactive Spectrum Handover Based on Packet Scheduling Algorithm in Cognitive Radio Networks[J]. Acta Electronica Sinica, 2013, 41(8): 1628-1633.
DOI：

MA Bin, LIAO Xiao-feng, XIE Xian-zhong. Proactive Spectrum Handover Based on Packet Scheduling Algorithm in Cognitive Radio Networks[J]. Acta Electronica Sinica, 2013, 41(8): 1628-1633. DOI： 10.3969/j.issn.0372-2112.2013.08.028.

摘要

认知无线电网络中

主用户出现在自己的授权频段

但被次用户占用

此时次用户进行频谱切换.主动频谱切换机制是一种可以提高网络的带宽利用率

同时降低丢包率的方法.基于一个有效的包调度算法

提出一个主动频谱切换机制

以期减少频谱切换发生时的不可用信道.该包调度算法有效地集成了两个算法:频谱空洞填充算法和包迁移算法

来减少丢包率和带宽碎片.实验仿真结果验证了该主动频谱切换机制的有效性.

Abstract

In cognitive radio networks

spectrum handover occurs when a secondary user changes frequency due to the appearance of a primary user.Proactive spectrum handover may result in aggraded bandwidth utilization performance and degraded packet loss probability.Here

we develop a proactive spectrum handover mechanism by using an efficient packet scheduling algorithm

to reduce unusable channel.It effectively integrates two algorithms:spectrum hole filling algorithm and packet migration algorithm

to minimize packet loss probability and reduce the bandwidth fragment.The efficiency of the mechanism is validated by simulation results.

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