On the impact of transmission radius on routing efficiency

  • Authors:
  • Matthew Johnston;Aradhana Narula-Tam

  • Affiliations:
  • Massachusetts Institute of Technology, Cambridge, MA, USA;Massachusetts Institute of Technology, Lexington, MA, USA

  • Venue:
  • Proceedings of the first ACM MobiHoc workshop on Airborne Networks and Communications
  • Year:
  • 2012

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Abstract

This paper presents a model for studying the effect of transmission range control on route efficiency in ad hoc networks, both in terms of maximal throughput and minimal energy expenditure. We show that allowing for per-packet variable power control greatly improves the average efficiency of multi-hop, unicast transmissions. For two-level power control, we compute near optimal values for the two transmission radii to maximize performance. A new local, position-based routing protocol is designed based on partial network information. We show that as nodes have more information about the network, better routing decisions are made. We find a threshold in location information such that when a node knows the location of other nodes within a certain distance of itself, it makes high quality, local forwarding decisions.