Spectrum management techniques with QoS provisioning in cognitive radio networks

Li-Chun Wang*, Chung Wei Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

13 Scopus citations

Abstract

In this paper, we discuss the spectrum management technologies including spectrum sensing, spectrum decision, spectrum sharing, and spectrum handoff schemes in cognitive radio (CR) networks. In order to evaluate performance of different spectrum management schemes, the preemptive resume priority (PRP) M/G/1 queuing model is suggested to characterize the spectrum usage behavior between the primary and the secondary users. Based on this model, we derive a new performance measure - the overall system time of the secondary connections. The overall system time is an important performance measure to provide the quality of service (QoS) provisioning service for the secondary users. It is defined as the duration from the instant that data arrives at system until the instant of finishing the whole transmission. Clearly, multiple interruptions from the high-priority primary users will increase the overall system time of the low-priority secondary users. Based on the PRP M/G/1 queuing model, the impacts of multiple interruptions on the overall system time can be evaluated. On top of this model, a spectrum sensing, a spectrum decision, a spectrum sharing, and a spectrum handoff algorithms are investigated to reduce the overall system time. From the numerical results, we can design better spectrum management policies to satisfy the QoS requirement of the secondary users in CR networks and provide useful insight into the design tradeoff for different spectrum management technologies.

Original languageEnglish
Title of host publicationISWPC 2010 - IEEE 5th International Symposium on Wireless Pervasive Computing 2010
Pages116-121
Number of pages6
DOIs
StatePublished - 26 Jul 2010
EventIEEE 5th International Symposium on Wireless Pervasive Computing 2010, ISWPC 2010 - Modena, Italy
Duration: 5 May 20107 May 2010

Publication series

NameISWPC 2010 - IEEE 5th International Symposium on Wireless Pervasive Computing 2010

Conference

ConferenceIEEE 5th International Symposium on Wireless Pervasive Computing 2010, ISWPC 2010
CountryItaly
CityModena
Period5/05/107/05/10

Keywords

  • Cognitive radio
  • Queuing theory
  • Spectrum decision
  • Spectrum handoff
  • Spectrum management
  • Spectrum mobility
  • Spectrum sensing
  • Spectrum sharing

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