Mobile power management for wireless communication networks

  • Authors:
  • John M. Rulnick;Nicholas Bambos

  • Affiliations:
  • Worcester Polytechnic Institute, Worcester, MA;Stanford Univ., Stanford, CA

  • Venue:
  • Wireless Networks
  • Year:
  • 1997

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Abstract

For fixed quality-of-service constraints and varying channel interference, how should a mobile node in a wireless network adjust its transmitter power so that energy consumption is minimized? Several transmission schemes are considered, and optimal solutions are obtained for channels with stationary, extraneous interference. A simple dynamic power management algorithm based on these solutions is developed. The algorithm is tested by a series of simulations, including the extraneous-interference case and the more general case where multiple, mutually interfering transmitters operate in a therefore highly responsive interference environment. Power management is compared with conventional power control for models based on FDMA/TDMA and CDMA cellular networks. Results show improved network capacity and stability in addition to substantially improved battery life at the mobile terminals.