Channel allocation inwireless networks with directional antennas

Hongning DAI, Kam Wing NG, Min-You WU

Research output: Journal PublicationsJournal Article (refereed)peer-review

3 Citations (Scopus)


In this paper, we study the channel allocation in multi-channel wireless ad hoc networks with directional antennas. In particular, we investigate the problem: given a set of wireless nodes equipped with directional antennas, how many channels are needed to ensure collision-free communications? We derive the upper bounds on the number of channels, which heavily depend on the node density and the interference ratio (i.e., the ratio of the interference range to the transmission range). We construct several scenarios to examine the tightness of the derived bounds. We also take the side-lobes and back-lobes as well as the signal path loss into our analysis. Our results can be used to estimate the number of channels required for a practical wireless network (e.g., wireless sensor network) with directional antennas.

Original languageEnglish
Article number2
Pages (from-to)213-234
Number of pages22
JournalJournal of Sensor and Actuator Networks
Issue number2
Publication statusPublished - 16 Apr 2013
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2013 by the authors; licensee MDPI, Basel, Switzerland.


  • Channel allocation
  • Directional antennas
  • Graph theory
  • Multiple channels
  • Wireless ad hoc networks
  • Wireless sensor networks


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