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Passive optical network architecture, method for realizing data transmission and optical network equipment

A technology of passive optical network and data, applied in the field of passive optical network

Active Publication Date: 2019-12-13
ZTE CORP
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  • Claims
  • Application Information

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Problems solved by technology

With the development of networks and services, ONUs need to support greater throughput and bandwidth. The number of wavelengths supported by ONUs has gradually increased from one to multiple, and the wavelengths supported by ONUs are also flexible. ODN supports different wavelength numbers and ONUs of different wavelengths and how to make full use of the bandwidth. At present, there is no relevant technical solution.

Method used

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  • Passive optical network architecture, method for realizing data transmission and optical network equipment
  • Passive optical network architecture, method for realizing data transmission and optical network equipment
  • Passive optical network architecture, method for realizing data transmission and optical network equipment

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Embodiment Construction

[0106] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0107] IEEE Next Generation Ethernet Passive Optical Network (NGEPON) and ITU-T NG-PON2 are being standardized, OLT supports multiple channels, ONU supports one or more channels, the number of channels supported by different ONUs and the supported Channels can be different. image 3 It is a schematic diagram of transmission scenarios where OLT supports multi-wavelength ONUs to support different wavelengths and wavelengths in the present invention. For example, when OLT supports channels 0-3: single-channel ONU can support channels 0, 1, 2 or 3, and different single-channel ON...

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Abstract

This paper discloses a passive optical network architecture and its method for realizing data transmission and optical network equipment, including an optical line terminal OLT supporting multiple channels, and an OLT under the same optical distribution network ODN supporting one or more channels One or more optical network units ONU; among them, OLT / ONU is used to obtain the number of channels supported by the transmission data and / or the corresponding channels, as well as the sendable status of the supported channels, and distribute the data to be transmitted in one or more than one supported channel, the data is preferentially transmitted on the channel with the earliest sending start time, and the sending end time of the channel on which the data is transmitted is close to or ends at the sending end time; ONU / OLT is used for Receive data on the channel supported by itself, and reassemble the data accordingly according to the sending rules. Through the technical solution provided by the invention, the OLT supporting multiple wavelengths controls the ONUs supporting different wavelength numbers and wavelengths, realizes flexible binding of channels, and fully utilizes bandwidth.

Description

technical field [0001] The present invention relates to but not limited to passive optical network (PON, Passive Optical Network) technology, especially a passive optical network architecture, a method for realizing data transmission and optical network equipment. Background technique [0002] With the rapid development of broadband services, users' demand for access network bandwidth has increased significantly. Passive Optical Network (PON, Passive Optical Network) is currently an important technical means for user access, such as figure 1 As shown, in the composition architecture of the existing PON system, the office-side optical line terminal (OLT, Optical Line Terminal) is connected to the optical splitter through the trunk fiber, and the optical splitter is connected to multiple user-side optical network units through the branch fiber. (ONU, Optical Network Unit) connection, OLT and ONU communicate through a wavelength pair. [0003] Currently, the OLT can use multi-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02
CPCH04J14/0239H04J14/02H04J14/0256H04J14/0282H04Q11/0067H04Q2011/0064H04B10/27H04B10/50H04B10/66
Inventor 张伟良袁立权
Owner ZTE CORP
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