Establishing mobile ad-hoc networks in 802.11 infrastructure mode

  • Authors:
  • Hanno Wirtz;Tobias Heer;Robert Backhaus;Klaus Wehrle

  • Affiliations:
  • RWTH Aachen University, Aachen, Germany;RWTH Aachen University, Aachen, Germany;RWTH Aachen University, Aachen, Germany;RWTH Aachen University, Aachen, Germany

  • Venue:
  • CHANTS '11 Proceedings of the 6th ACM workshop on Challenged networks
  • Year:
  • 2011

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Abstract

Due to the widespread availability of 802.11-compliant devices, the 802.11 ad-hoc mode appears especially suited to set up mobile ad-hoc networks (MANETs). In practice, creating a MANET is challenging because typical mobile devices do not implement the configuration, routing, and name resolution functions required to operate in an ad-hoc scenario. Software restrictions on modern mobile operating systems, such as Android and iOS, even prevent mobile devices from actively participating in ad-hoc networks without circumventing vendor barriers (e.g., acquiring root access). While 802.11 infrastructure mode is not originally meant for ad-hoc establishment of multi-hop networks, it is a commodity in all 802.11-compliant devices. This availability prompts the question whether efficient ad-hoc networks can be formed by solely using 802.11 infrastructure mode. In this paper, we present an approach for 802.11 infrastructure mode ad-hoc networks in which mobile devices simultaneously function as an access point and as a station. To establish multi-hop communication across multiple infrastructure mode networks, they mesh with other access point devices. Our evaluation shows that 802.11 infrastructure ad- hoc networks even outperform 802.11 ad-hoc mode networks in terms of multi-hop throughput.