4th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness

Research Article

Energy-Efficient Airtime Allocation in Multi-Rate Multi-Power-Level Wireless LANs

  • @INPROCEEDINGS{10.1145/1577222.1577231,
        author={Daji Qiao and Kang G. Shin},
        title={Energy-Efficient Airtime Allocation in Multi-Rate Multi-Power-Level Wireless LANs},
        proceedings={4th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and  Robustness},
        publisher={ACM},
        proceedings_a={QSHINE},
        year={2007},
        month={8},
        keywords={IEEE 802.11e Energy-Conservation Fairness Airtime Allocation Algorithms Design Performance},
        doi={10.1145/1577222.1577231}
    }
    
  • Daji Qiao
    Kang G. Shin
    Year: 2007
    Energy-Efficient Airtime Allocation in Multi-Rate Multi-Power-Level Wireless LANs
    QSHINE
    ACM
    DOI: 10.1145/1577222.1577231
Daji Qiao1,*, Kang G. Shin2,*
  • 1: Iowa State University Ames, IA 50011
  • 2: The University of Michigan Ann Arbor, MI 48109
*Contact email: daji@iastate.edu, kgshin@eecs.umich.edu

Abstract

This paper considers the energy-conservation problem in multi-rate multi-power-level wireless local area networks (WLANs). This problem is addressed from a unique angle — the system-level fairness which is significantly different from most of current research that focuses on improving the performance of each individual wireless station. To emphasize fair energy-consumption among contending stations, we introduce a new fairness notion, called energyconservation fairness, in contrast to the conventional throughput fairness and airtime fairness. Another contribution of the paper is an energy-efficient airtime allocation scheme, which allocates airtime shares to contending stations in such a way that the combined airtime and energy-conservation fairness is achieved. Our simulation results show that, when the energy-conservation fairness is considered, both aggregate system throughput and overall system energy-efficiency can be improved significantly with all contending stations consuming a similar amount of energy.