This invention discloses a shared point-to-multipoint
Ethernet transmission system based on the TDMA transmission mechanism in the field of communication technology, comprising: a main
Ethernet optical port, at least one slave
Ethernet optical port, and a passive
optical fiber distribution network. The main Ethernet optical port performs time slot fragmentation calculation, OAM PDU message generation, transmission and reception, and management and control of the main Ethernet optical port
physical unit, which is used to complete Ethernet
data transmission and reception. At least one slave Ethernet optical port is used to perform slave Ethernet optical port
transmission time slot control and OAM PDU message transmission and reception
processing, and the slave Ethernet optical port
physical unit is used to complete Ethernet
data transmission and reception. The passive
optical fiber distribution network is used to realize communication between the main Ethernet optical port and at least one slave Ethernet optical port. The networking form and access architecture use a PON
system framework, and use traditional Ethernet chips to replace dedicated PON chips. The EFM OAM extended
information domain is used to realize terminal
access control, bandwidth control, and
transmission time slot allocation.