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학술대회 On the Performance of Hybrid-PON Scheduling Strategies for NG-EPON
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저자
Lin Wang, Xinbo Wang, Biswanath Mukherjee, 정환석, 이한협, 박수명
발행일
201605
출처
International Conference on Optical Network Design and Modeling (ONDM) 2016, pp.1-5
DOI
https://dx.doi.org/10.1109/ONDM.2016.7494071
협약과제
15MI1300, SDN 기반 유무선 액세스 통합 광네트워킹 기술, 정환석
초록
To effectively schedule transmissions in NG-EPON, Hybrid-PON is further classified into MSD-PON, SSD-PON, and WA-PON depending on their different access architectures, viz. how a group of ONUs share the assigned wavelength channels. The architectures for these three Hybrid-PONs were introduced by the IEEE 802.3 Ethernet Working Group in 2015. In this study, we first propose to apply some existing dynamic bandwidth allocation (DBA) schemes in the cases of MSD-PON and SSD-PON. Then, since WA-PON is a new hybrid multiplexing architecture and previous DBA schemes cannot exploit its flexibility of wavelength assignment and sharing, we develop the optimization model and also provide a novel DBA scheme for WA-PON. Then, we compare the performance of these hybrid PONs by simulation in terms of average delay and packet drop ratio. We analyze the influence of increasing buffer size for each ONU in WA-PON and show how the flexibility of WA-PON can impact the performance. We find that WA-PON can reduce the drop ratio compared with SSD-PON at low offered load, and has smaller average delay than MSD-PON, which suggest that WA-PON can tolerate heavier traffic and performs the best among three Hybrid-PON architectures.
KSP 제안 키워드
Average delay, Buffer Size, IEEE 802.3, NG-EPON, Optimization Model, Scheduling strategy, WA-PON, Wavelength Assignment, dynamic bandwidth allocation, packet drop ratio