ETRI Journal

  • 제37권4호
  • /
  • Pages.657-666
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  • 2015
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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Two-Stage Resource Allocation to Improve Utilization of Synchronous OFDM-PON Supporting Service Differentiation

  • Doo, Kyeong-Hwan (Communications & Internet Research Laboratory, ETRI) ;
  • Bang, Junseong (Communications & Internet Research Laboratory, ETRI) ;
  • Han, Man Soo (Department of Information and Communications Engineering, Mokpo National University) ;
  • Lee, Jonghyun (Communications & Internet Research Laboratory, ETRI) ;
  • Lee, Sangsoo (Communications & Internet Research Laboratory, ETRI)
  • 투고 : 2014.08.04
  • 심사 : 2015.05.08
  • 발행 : 2015.08.01
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초록

We propose a two-stage resource allocation algorithm for the high link utilization of an orthogonal frequency-division multiplexing passive optical network (OFDM-PON). An OFDM-PON is assumed to use a synchronous frame structure in supporting service differentiation. In distributing resources, the proposed algorithm first allocates a time window for each optical network unit (ONU), and then it arranges a subchannel, which is a group of subcarriers. This algorithm needs to satisfy two constraints. First, computations for the resource allocation should be done using a frame unit. Second, an ONU has to use a single subchannel to send upstream data for multiple services within a frame duration. We show through a computer simulation that the proposed algorithm improves the link utilization.

키워드

참고문헌

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피인용 문헌

  1. Experimental demonstration of wavelength domain rogue-free ONU based on wavelength-pairing for TDM/WDM optical access networks vol.23, pp.24, 2015, https://doi.org/10.1364/oe.23.031163