Impact of the primary resource occupancy information on the performance of cognitive radio networks with VoIP traffic

S. Lirio Castellanos-Lopez, Felipe A. Cruz-Pérez, Mario E. Rivero-Angeles, Genaro Hernandez-Valdez

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

7 Scopus citations

Abstract

In this paper, the relevance of considering the primary network resource occupancy information on the admission criterion of new secondary VoIP sessions in cognitive radio networks (CRNs) is investigated. In particular, the performance of two different call admission control (CAC) strategies whose admission criterion is based either on the total number of primary and secondary sessions or only on the number of sessions of secondary users is compared. System performance is evaluated in terms of the most relevant quality of service metrics for VoIP traffic at both call and packet level. Numerical results clearly show that including primary resource occupancy information on the CAC strategy is an effective mean to improve system performance, especially for low to moderate traffic loads. For instance, assuming that voice toll quality is required, packet dropping probability is reduced more than 30% when primary resource occupancy information is additionally used on the CAC strategy.

Original languageEnglish
Title of host publicationProceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2012
Pages338-343
Number of pages6
DOIs
StatePublished - 2012
Event2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Ntworks and Communications, CROWNCOM 2012 - Stockholm, Sweden
Duration: 18 Jun 201220 Jun 2012

Publication series

NameProceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2012

Conference

Conference2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Ntworks and Communications, CROWNCOM 2012
Country/TerritorySweden
CityStockholm
Period18/06/1220/06/12

Keywords

  • AMC
  • Cognitive radio networks
  • VoIP
  • call admission control
  • joint call and packet level teletraffic analysis
  • on/off traffic
  • packet buffering
  • time-scale decomposition

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