Optimizing energy efficiency in polling-based wireless networks with stability constraints

Yi Xie, Kow Chuen Chang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


In this paper we consider the problem of minimizing the total energy for all devices in a wireless infrastructure network. The wireless devices use transmission power control and power saving mode to conserve energy. In particular we consider a polling-based MAC protocol which determines optimal power schedules (therefore the transmission rates) for all devices. Moreover, we have considered two grouping schedules: Phase Grouping (PG) and Mobile Grouping (MG). Through an iterative algorithm, we compute and compare the suboptimal energy consumptions for the two schedules based on the number of bits transmitted per joule of energy. Extensive results show that the MG schedule is much more energy efficient than the PG schedule, and the main sources of energy saving come from the reception and mode transition phases. Moreover, we evaluate the impact of an uncooperative user, who does not follow the optimal power allocation, on its own and others' energy-delay performance.
Original languageEnglish
Title of host publicationIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
Publication statusPublished - 1 Dec 2006
EventIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference - San Francisco, CA, United States
Duration: 27 Nov 20061 Dec 2006


ConferenceIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
Country/TerritoryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

  • Engineering(all)

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