US 12,563,324 B2 · Splitting apparatus, dual-mode ONU, optical network system, and communication method

Abstract

A splitting apparatus provides M groups of ports and includes M splitting elements. Each splitting element includes at least one feeder end and N branch ends, where M=N+1. Each branch end of each splitting element is coupled to one branch end of another splitting element in the M splitting elements, where different branch ends of each splitting element are coupled to one branch end of different splitting elements. A feeder end of each splitting element is coupled to one group of ports in the M groups of ports of the splitting apparatus, and feeder ends of different splitting elements are coupled to different groups of ports. The splitting apparatus may implement an optical bus structure with peer-to-peer topologies.

Claims9

Dependent claims

A dual-mode optical network unit (ONU), comprising:

an ONU module configured to receive an optical signal of a first wavelength and to send an optical signal of a second wavelength;
an optical line terminal (OLT) module configured to send the optical signal of the first wavelength and receive the optical signal of the second wavelength;
and
a switching control unit configured to control the dual-mode ONU to operate in one of an ONU mode and an OLT mode, wherein when the dual-mode ONU operates in the ONU mode, when the duration in which the ONU module does not receive the optical signal of the first wavelength is greater than or equal to specified duration, light emission of the OLT module is enabled, light emission of the ONU module is disabled, and light reception of the ONU module is maintained so that the dual-mode ONU switches to the OLT mode.

1 more element

An optical network system-based communication method, applied to a splitting apparatus and a dual-mode optical network unit ONU, the method comprising:

when the dual-mode ONU connected to the splitting apparatus operates in an ONU mode, when duration of time in which an optical signal of a first wavelength is not received is greater than or equal to specified duration, switching to an optical line terminal OLT mode;
and
after the dual-mode ONU operating in the OLT mode receives an optical signal of a second wavelength from a first ONU connected to the splitting apparatus, converting the optical signal of the second wavelength into the optical signal of the first wavelength and sending the optical signal of the first wavelength to the splitting apparatus so that the optical signal of the first wavelength is received by a second ONU connected to the splitting apparatus.

A dual-mode optical network unit (ONU), comprising:

an ONU module configured to receive an optical signal of a first wavelength and to send an optical signal of a second wavelength;
an optical line terminal (OLT) module configured to send the optical signal of the first wavelength and receive the optical signal of the second wavelength;
a switching control unit configured to control the dual-mode ONU to operate in one of an ONU mode and an OLT mode, wherein when the dual-mode ONU operates in the ONU mode, when the duration in which the ONU module does not receive the optical signal of the first wavelength is greater than or equal to specified duration, light emission of the OLT module is enabled, light emission of the ONU module is disabled, and light reception of the ONU module is maintained so that the dual-mode ONU switches to the OLT mode;
an Ethernet switching unit;
a first encapsulation processing unit coupled between the ONU module and the Ethernet switching unit, the first encapsulation processing unit being configured to process at least one of a passive optical network (PON) data frame from the ONU module into an Ethernet frame and send the Ethernet frame to the Ethernet switching unit or process an Ethernet frame from the Ethernet switching unit into a PON data frame and send the PON data frame to the ONU module;
and
a second encapsulation processing unit coupled between the OLT module and the Ethernet switching unit, the second encapsulation processing unit being configured to process at least one of a passive optical network PON data frame from the OLT module into an Ethernet frame and send the Ethernet frame to the Ethernet switching unit or process an Ethernet frame from the Ethernet switching unit into a PON data frame and send the PON data frame to the OLT module.

4 more elements

Dependencies are inferred from the claim text.

Splitting apparatus, dual-mode ONU, optical network system, and communication method

Life of this patent

Splitting apparatus, dual-mode ONU, optical network system, and communication method

Life of this patent

Abstract

Claims9