Optimization of Transmission Power in Competitive Wireless Networks

  • Authors:
  • Patrick Maillé/;Bruno Tuffin

  • Affiliations:
  • Institut Telecom/ Telecom Bretagne, Université/ europé/enne de Bretagne, Cesson Sé/vigné/ Cedex, France 35576;INRIA Rennes - Bretagne Atlantique, Rennes Cedex, France 35042

  • Venue:
  • ICQT '09 Proceedings of the 6th International Workshop on Internet Charging and Qos Technologies: Network Economics for Next Generation Networks
  • Year:
  • 2009

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Abstract

Competition among providers has become an important issue in current and future wireless telecommunication networks. The providers may operate using different technologies, such as WiFi, WiMAX, UMTS... In a previous work, we have analyzed the price competition among two providers, one operating in only a subdomain of the other, due to smaller distance range. A typical situation is WiFi against WiMAX. We propose here to add a supplementary level of decision on top of that game, making use of its equilibrium: the smaller-range provider plays with its transmission power in order to attract more customers and potentially increase its revenue. We determine the optimal power in the case where energy has a negligible cost, as well as when its cost is linear in transmission power.