Proposal of a novel protection mechanism for Ethernet PONs

High reliability, low cost and TDM service supporting are the vital factors for Ethernet PONs to be deployed in FTTB (fiber to the business) and FTTB+H (fiber to the business and home) environments. To focus on high reliability and low cost, a novel protection scheme for the Ethernet PONs is proposed in this paper. Compared with the APON protection schemes recommended in ITU G.983.1 and SDH/SONET protection schemes, the novel scheme is more bandwidth-efficient, economical, flexible, and reliable.