Performance Analysis of CMAP-WDMA MAC Protocol for Metro-WDMA Networks

  • Yun, Chang-Ho (Department of Ocean Engineering Research, Korea Ocean Research & Development Institute (KORDI)) ;
  • Cho, A-Ra (Department of Ocean Engineering Research, Korea Ocean Research & Development Institute (KORDI)) ;
  • Park, Jong-Won (Department of Ocean Engineering Research, Korea Ocean Research & Development Institute (KORDI)) ;
  • Lim, Yong-Kon (Department of Ocean Engineering Research, Korea Ocean Research & Development Institute (KORDI))
  • Published : 2009.12.31

Abstract

A channel-shared modified accelerative pre-allocation wavelength division multiple access (CMAP-WDMA) media access control (MAC) has been proposed for metro-WDMA networks, as an extension of modified pre-allocation wavelength division multiple access (MAP-WDMA) MAC protocol. Similarly, CAP WDMA as an extension of accelerative pre-allocation wavelength division multiple access (AP-WDMA) MAC protocol. Performance of CMAP- and CAP-WDMA was extensively investigated under several channel sharing methods (CSMs), asymmetric traffic load patterns (TLPs), and non-uniform traffic distribution patterns (TDPs). The result showed that the channel utilization of the CMAP-WDMA always outperforms that of CAP-WDMA at the expense of longer channel access delay for channel shared case while CMAP-WDMA provided higher channel utilization at specific network conditions but always shorter channel access delay than CAP-WDMA for non-channel shared case. Additionally both for CMAP- and CAP-WDMA, determining an effective CSM is a critical design issue because TDPs and TLPs can be neither managed nor expected while CSM is manageable, and the CSM supporting the best channel utilization can be recommended.

Keywords

References

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