Simulation signal light generation device and simulation signal light generation method

Patent metadata

Field	Value
Publication number	US-11575981-B2
Application number	US-201917271390-A
Country	US
Kind code	B2
Filing date	Aug 23, 2019
Priority date	Aug 29, 2018
Publication date	Feb 7, 2023
Grant date	Feb 7, 2023

Abstract

The present disclosure intends to provide an optical signal from an ONU according to a desired service usage state without using the ONU and an OLT. A simulated signal light generation apparatus 10 according to the present disclosure is a simulated signal light generation apparatus 10 for simulating an uplink signal light generated in an optical network unit (ONU) in a passive optical network (PON), and the apparatus includes a usage state control unit 11 that sets a service usage state of the ONU, a signal generation unit 12 that generates an uplink signal frame according to the usage state set by the usage state control unit 11 , and an electrical/optical conversion unit 13 that converts an electrical signal from the signal generation unit 12 into an optical signal, and the optical signal from the electrical/optical conversion unit 13 is repeatedly transmitted to an optical fiber core 22.

First claim

The invention claimed is:

1. A simulated signal light generation apparatus for simulating an uplink signal light generated in an optical network unit (ONU) in a passive optical network (PON), the apparatus comprising:
a usage state control unit configured to set a service usage state of the ONU;
a signal generation unit configured to generate an uplink signal frame according to the service usage state set by the usage state control unit; and
an electrical/optical conversion unit configured to convert an electrical signal from the signal generation unit into an optical signal, wherein
the optical signal from the electrical/optical conversion unit is repeatedly transmitted as the uplink signal light to an optical fiber core,
wherein:
the service usage state of the ONU includes IP communication and phone,
the uplink signal frame includes a tag protocol identifier identifying a VLAN tag and tag control information, and
the signal generation unit generates the uplink signal frame including a combination of the tag protocol identifier and the tag control information corresponding to each of the IP communication and the phone.

2. The simulated signal light generation apparatus according to claim 1 , wherein
when the usage state control unit sets non-use of the VLAN tag, the signal generation unit generates a first uplink signal frame using the tag protocol identifier during non-use of the VLAN tag at a preset first cycle, and
when the usage state control units sets use of the VLAN tag, the signal generation unit generates a second uplink signal frame using the combination of the tag protocol identifier and the tag control information during use of the VLAN tag at a second cycle greater than the first cycle, and replaces a part of the first uplink signal frame with the second uplink signal frame at the second cycle.

3. The simulated signal light generation apparatus according to claim 1 , wherein
a plurality of the electrical/optical conversion units are provided,
the signal generation unit outputs the generated uplink signal frame to the electrical/optical conversion units defined for each usage state set by the usage state control unit, and
the electrical/optical conversion units output an optical signal to different ports defined for the respective electrical/optical conversion units.

4. The simulated signal light generation apparatus according to claim 3 , wherein
the signal generation unit generates the uplink signal frame including a preamble describing a logical link identifier corresponding to one of the ports.

5. The simulated signal light generation apparatus according to claim 3 , wherein
the signal generation unit generates the uplink signal frame describing a source address corresponding to the port.

6. The simulated signal light generation apparatus according to claim 3 , wherein
the ports are connected to respective optical fiber cores having distal ends interconnected at an optical splitter, and
an optical signal is output with optical strength defined for the each port from each of the ports at such timing that the optical signals do not collide with each other after being multiplexed at the optical splitter.

7. A simulated signal light generation method performed by a simulated signal light generation apparatus for simulatively generating an uplink signal light generated in an optical network unit (ONU) in a passive optical network (PON), the method comprising:
setting a service usage state of the ONU;
generating an uplink signal frame according to the usage state by the setting for the usage state; and
converting an electrical signal of the uplink signal frame in the generating into an optical signal, wherein
the optical signal converted in the conversion is repeatedly transmitted as the uplink signal light to an optical fiber core,
wherein:
the service usage state of the ONU includes IP communication and phone,
the uplink signal frame includes a tag protocol identifier identifying a VLAN tag and tag control information, and

generating the uplink signal frame includes generating the uplink signal frame including a combination of the tag protocol identifier and the tag control information corresponding to each of the IP communication and the phone.

8. The simulated signal light generation method according to claim 7 , wherein
when non-use of the VLAN tag is set, generating the uplink signal frame includes generating a first uplink signal frame using the tag protocol identifier during non-use of the VLAN tag at a preset first cycle, and
when use of the VLAN tag is set, generating the uplink signal frame includes generating a second uplink signal frame using the combination of the tag protocol identifier and the tag control information during use of the VLAN tag at a second cycle greater than the first cycle, and replacing a part of the first uplink signal frame with the second uplink signal frame at the second cycle.

9. The simulated signal light generation method according to claim 7 , wherein
generating the uplink signal frame includes outputting the generated uplink signal frame to electrical/optical conversion units defined for each usage state set, and
the method further includes, by the electrical/optical conversion units, outputting an optical signal to different ports defined for the respective electrical/optical conversion units.

10. The simulated signal light generation method according to claim 9 , wherein
generating the uplink signal frame includes generating the uplink signal frame including a preamble describing a logical link identifier corresponding to the port.

11. The simulated signal light generation method according to claim 9 , wherein
generating the uplink signal frame includes generating the uplink signal frame describing a source address corresponding to one of the ports.

12. The simulated signal light generation method according to claim 9 , wherein
the ports are connected to respective optical fiber cores having distal ends interconnected at an optical splitter, and
the method includes outputting an optical signal with optical strength defined for the each port from each of the ports at such timing that the optical signals do not collide with each other after being multiplexed at the optical splitter.

13. A simulated signal light generation apparatus for simulating an uplink signal light generated in an optical network unit (ONU) in a passive optical network (PON), the apparatus comprising:
a usage state control unit configured to set a service usage state of the ONU;
a signal generation unit configured to generate an uplink signal frame according to the service usage state set by the usage state control unit; and
an electrical/optical conversion unit configured to convert an electrical signal corresponding to the service usage state of the ONU from the signal generation unit into an optical signal, wherein
the optical signal from the electrical/optical conversion unit is repeatedly transmitted as the uplink signal light to an optical fiber core,
wherein an order of transmission from the electrical/optical conversion unit is changed in one of (a) a numerical order and (b) a random order.

14. The simulated signal light generation apparatus of claim 13 further comprising a plurality of other electrical/optical conversion units configured to transmit the uplink signal frame from respective ports.

15. The simulated signal light generation apparatus of claim 14 wherein an order of transmission from the electrical/optical conversion units is set based on a number of the electrical/optical conversion units.

16

Assignees

• Nippon Telegraph & Telephone

Inventors

• Uematsu Takui
• Manabe Tetsuya
• Hirota Hidenobu
• Iida Hiroyuki

Classifications

• H04B10/07953

  Monitoring or measuring OSNR, BER or Q · CPC title

• H04Q2011/0083

  Testing; Monitoring · CPC title

• H04L12/465

  wherein a single frame includes a plurality of VLAN tags · CPC title

• H04Q11/0071

  Provisions for the electrical-optical layer interface · CPC title

• H04Q11/0067 Primary

  Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring · CPC title