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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Analysis of Resource Assignment for Directional Multihop Communications in mm-Wave WPANs

  • Kim, Meejoung (Research Institute for Information and Communication Technology, Korea University) ;
  • Hong, Seung-Eun (Communications Internet Research Laboratory, ETRI) ;
  • Kim, Yongsun (IT Convergence Technology Research Laboratory, ETRI) ;
  • Kim, Jinkyeong (Communications Internet Research Laboratory, ETRI)
  • Received : 2012.04.10
  • Accepted : 2012.10.26
  • Published : 2013.02.01
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Abstract

This paper presents an analysis of resource assignment for multihop communications in millimeter-wave (mm-wave) wireless personal area networks. The purpose of this paper is to figure out the effect of using directional antennas and relaying devices (DEVs) in communications. The analysis is performed based on a grouping algorithm, categorization of the flows, and the relaying DEV selection policy. Three schemes are compared: direct and relaying concurrent transmission (DRCT), direct concurrent transmission (DCT), and direct nonconcurrent transmission (DNCT). Numerical results show that DRCT is better than DCT and DCT is better than DNCT for any antenna beamwidths under the proposed algorithm and policy. The results also show that using relaying DEVs increases the throughput up to 30% and that there is an optimal beamwidth that maximizes spatial reuse and depends on parameters such as the number of flows in the networks. This analysis can provide guidelines for improving the performance of mm-wave band communications with relaying DEVs.

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