Efficient recovery algorithms for wireless mesh networks with cognitive radios

Roberto Hincapie, Li Zhang, Jian Tang, Guoliang Xue, Richard S. Wolff, Roberto Bustamante

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

Cognitive radios allow unlicensed wireless users to access channels that are in the licensed spectrum bands. However, in a wireless network with cognitive radios, when a licensed user becomes active on a channel in a certain area, nodes and links that were using that channel must release it, which will cause traffic failures. Simple and effective recovery schemes are needed to re-allocate available resources for the failed traffic. In this paper, we study the failure recovery in wireless mesh networks with cognitive radios. We formally formulate the corresponding problems as integer linear programming problems. By solving them, we can obtain optimal solutions. Moreover, an efficient distributed heuristic algorithm is presented for fast recovery. Simulation results show that the performance given by our distributed algorithm is close to that of the optimal solutions.

Original languageEnglish (US)
Title of host publicationIEEE International Conference on Communications
DOIs
Publication statusPublished - 2009
Event2009 IEEE International Conference on Communications, ICC 2009 - Dresden, Germany
Duration: Jun 14 2009Jun 18 2009

Other

Other2009 IEEE International Conference on Communications, ICC 2009
CountryGermany
CityDresden
Period6/14/096/18/09

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Keywords

  • Cognitive radio
  • Mathematical programming
  • Recovery
  • Wireless mesh network

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Hincapie, R., Zhang, L., Tang, J., Xue, G., Wolff, R. S., & Bustamante, R. (2009). Efficient recovery algorithms for wireless mesh networks with cognitive radios. In IEEE International Conference on Communications [5198977] https://doi.org/10.1109/ICC.2009.5198977