Opportunistic spectrum access method for cognitive radio sensor network of typical deployment strategies

Wen-xiang LI; Ya-jie MA; Peng KE

doi:10.3969/j.issn.1000-436x.2014.z2.006

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Opportunistic spectrum access method for cognitive radio sensor network of typical deployment strategies

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- Opportunistic spectrum access method for cognitive radio sensor network of typical deployment strategies
- Journal on Communications Vol. 35, Issue Z2, Pages: 33-41(2014)
- 作者机构：
  
  1. 武汉科技大学信息科学与工程学院,湖北武汉 430081
  2. 武汉科技大学教育部冶金自动化与检测技术工程研究中心,湖北武汉 430081
  3. 武汉科技大学计算机科学与技术学院,湖北武汉 430065
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61104215);The Science and Technology Research Plan of Education Department of Hubei Province(Q20141110)
- DOI：10.3969/j.issn.1000-436x.2014.z2.006
  CLC： TP393
- Online First：2014-11，
  
  Published：30 November 2014
- 稿件说明：
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Wen-xiang LI, Ya-jie MA, Peng KE. Opportunistic spectrum access method for cognitive radio sensor network of typical deployment strategies[J]. Journal on Communications, 2014, 35(Z2): 33-41.
DOI：

Wen-xiang LI, Ya-jie MA, Peng KE. Opportunistic spectrum access method for cognitive radio sensor network of typical deployment strategies[J]. Journal on Communications, 2014, 35(Z2): 33-41. DOI： 10.3969/j.issn.1000-436x.2014.z2.006.

摘要

在典型规则拓扑模式及覆盖部署方式的传感网中探讨无冲突的认知频谱接入方法（包括频谱和时隙分配、协作频谱感知和感知结果汇报方案），为数据采集提供高效的传输手段。提出对应网络环境下的次级用户的阻塞率和掉话率、各拓扑模式下的网络有效接收带宽和最大传输时延的分析模型。通过对几种拓扑模式的比较，表明Triangle的协作频谱感知效果最佳，而Square的有效接收带宽最佳；在完全覆盖部署方式下，Square和Triangle的传输时延较小，而多重覆盖部署方式下Square的时延最小。指出单个节点上的虚警概率对传输时延的影响不大，授权用户出现概率则对时延有明显影响，而选择较大的传输时隙/感知时隙比能显著降低时延。

Abstract

Explored the opportunistic spectrum access method for cognitive radio sensor networks with regular topology patterns and coverage patterns.The method includes an economic spectrum-and-timeslot-allocation scheme

a sensing-results-reporting scheme and a cooperative spectrum-sensing scheme.A model was proposed for analyzing the blocking and dropping probability for secondary users

the effective reception bandwidth and transmission delay.Numerical analysis shows that Triangle yields the optimal cooperative sensing performance

and square yields the optimal reception bandwidth.In case of complete coverage

Square and triangle lead to less transmission delay

and in case of multiple coverage

square leads to the least transmission delay.The false alarm probability of single node has little impact on transmission delay

and Primary User’s activity may affect delay noticeably.On the other hand

larger ratio of transmission timeslot to sensing timeslot helps to decrease delay.

关键词

Keywords

references

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