Modeling UMTS discontinuous reception mechanism

Shun Ren Yang*, Yi-Bing Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

91 Scopus citations


This paper investigates the discontinuous reception (DRX) mechanism of universal mobile telecommunications system (UMTS). DRX is exercised between the network and a mobile station (MS) to save the power of the MS. The DRX mechanism is controlled by two parameters: the inactivity timer threshold and the DRX cycle. Analytic and simulation models are proposed to study the effects of these two parameters on output measures including the expected queue length, the expected packet waiting time, and the power saving factor. Our study quantitatively shows how to select appropriate inactivity timer and DRX cycle values for various traffic patterns.

Original languageEnglish
Pages (from-to)312-319
Number of pages8
JournalIEEE Transactions on Wireless Communications
Issue number1
StatePublished - 1 Jan 2005


  • Discontinuous reception (DRX)
  • Power saving
  • Universal mobile telecommunications system (UMTS)

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