(LBA-and-WRM)-based DBA scheme for multi-wavelength upstream transmission supporting 10 Gbps and 1 Gbps in MAN

Authors：Yuchao Zhang; Chaoqin Gan; Kaiyu Gou; Anni Xu; Jiamin Ma

Source：Optical Fiber Technology, 2018, 40: 130-138.

DOI：10.1016/j.yofte.2017.11.017

• Metro-access network
• Load balance algorithm
• Wavelength recycle mechanism
• Resource pool
• VPON

DBA scheme based on Load balance algorithm (LBA) and wavelength recycle mechanism (WRM) for multi-wavelength upstream transmission is proposed in this paper. According to 1 Gbps and 10 Gbps line rates, ONUs are grouped into different VPONs. To facilitate wavelength management, resource pool is proposed to record wavelength state. To realize quantitative analysis, a mathematical model describing metro-access network (MAN) environment is presented. To 10G-EPON upstream, load balance algorithm is designed to ensure load distribution fairness for 10G-OLTs. To 1G-EPON upstream, wavelength recycle mechanism is designed to share remained wavelengths. Finally, the effectiveness of the proposed scheme is demonstrated by simulation and analysis.