Energy-efficient packet scheduling algorithms for real-time communications in a mobile WiMAX system

Shiao-Li Tsao*, You L. Chen

*Corresponding author for this work

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

Broadband wireless access systems usually provide flexible sleep-mode operations for mobile stations to conserve their energy during idle or active mode. For example, Mobile WiMAX, i.e. the IEEE 802.16e, offers several power-saving classes that can be associated with different types of network connections to minimize power consumption of mobile stations. Unfortunately, previous studies did not fully utilize the sleep-mode features to save the energy of a mobile station with multiple real-time connections, and power consumption of a mobile station is not yet optimized. In this work, two energy-efficient packet scheduling algorithms for real-time communications in a Mobile WiMAX system are proposed. The schemes not only guarantee the quality of services (QoSs) of real-time connections but also minimize power consumption of mobile stations. Simulation results demonstrate that the proposed schemes outperform the traditional approach.

Original languageEnglish
Pages (from-to)2350-2359
Number of pages10
JournalComputer Communications
Volume31
Issue number10
DOIs
StatePublished - 25 Jun 2008

Keywords

  • Energy efficiency
  • Mobile WiMAX
  • Packet scheduling
  • Power saving

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