Title:
WAVELENGTH SWITCHING AND CONFIGURATION METHODS AND DEVICES FOR PASSIVE OPTICAL NETWORK
Document Type and Number:
WIPO Patent Application WO/2020/253540
Kind Code:
A1
Abstract:
The present application provides wavelength switching and configuration methods and devices for a passive optical network. The switching method comprises: an optical network unit (ONU) responding to a ranging request message sent by an optical line terminal (OLT) on a first uplink wavelength supported by the ONU; the ONU receiving ranging information sent by the OLT; the ONU using the received ranging information as ranging information about a second uplink wavelength of the ONU, and performing data transmission on the second uplink wavelength according to a bandwidth allocation from the OLT, wherein a path transmission time difference caused by a wavelength interval between the first uplink wavelength and the second uplink wavelength is less than a corresponding fault tolerance range when the OLT receives data; and the ranging information is obtained by the OLT according to the ranging response sent by the ONU on the first uplink wavelength.
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Inventors:
ZHANG WEILIANG (CN)
LI MINGSHENG (CN)
YANG BO (CN)
YUAN LIQUAN (CN)
LI MINGSHENG (CN)
YANG BO (CN)
YUAN LIQUAN (CN)
Application Number:
PCT/CN2020/094261
Publication Date:
December 24, 2020
Filing Date:
June 04, 2020
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
H04Q11/00
Domestic Patent References:
| WO2014122525A1 | 2014-08-14 |
Foreign References:
| CN101394229A | 2009-03-25 | |||
| CN103840903A | 2014-06-04 | |||
| CN103841474A | 2014-06-04 | |||
| US20170207876A1 | 2017-07-20 |
Other References:
See also references of EP 3985992A4
Attorney, Agent or Firm:
TEE&HOWE INTELLECTUAL PROPERTY ATTORNEYS (CN)
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