Optical transmission control method in optical network, optical network device and system

A control method and optical network technology, applied in the field of communication, can solve problems such as normal work impact

Active Publication Date: 2011-01-12
HUAWEI TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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  • Optical transmission control method in optical network, optical network device and system
  • Optical transmission control method in optical network, optical network device and system
  • Optical transmission control method in optical network, optical network device and system

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Embodiment Construction

[0031] In order to make it easier for those skilled in the art to understand and realize the present invention, the embodiments of the present invention are described in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0032] like figure 1 As shown, an update cycle of DBA is m frames, and the typical value of m is 8. In this example, the update cycle is 8 frames as an example. Each ONU is assigned a bandwidth required for work. In the figure, ONU1 occupies a bandwidth of 25us in one frame (125us), so ONU1 can transmit data within this 25us time. When it is necessary to perform RSSI measurement, the DBA module provides figure 1 ONU1 allocates a large bandwidth for the ONU under test), and will adjust the bandwidth of OUN2...ONUn, that is, while increasing the bandwidth of ONU1, it will be reduced to OUN2...ONUn The allocate...

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Abstract

The embodiment of the invention relates to the field of communication and particularly discloses an optical transmission control method in an optical network, an optical network device and a system. The method comprises the following steps of: generating a multi-point control protocol (MPCP) message, wherein the MPCP message comprises an identification of a detected ONU (Optical Network Unit) and time interface information which is distributed to the detected ONU and used for sending an uplink optical signal; sending the MPCP message to the detected ONU; receiving the uplink optical signal sent by the detected ONU in the distributed time interval; detecting the received uplink optical signal; and determining the optical power of the uplink optical signal. The invention avoids the bandwidth waste caused by distributing the bandwidth to the detected ONU through a DBA module so as to detect the optical power in an optical power detection process in the prior art.

Description

technical field [0001] The invention relates to the communication field, in particular to an optical transmission control method in an optical network, an optical network device and a system. Background technique [0002] PON (Passive Optical Network, Passive Optical Network) technology is a point-to-multipoint optical fiber access technology. The PON generally consists of an OLT (Optical Line Terminal, Optical Line Terminal) at the office side, an ONU (Optical Network Unit, Optical Network Unit) at the user side, and an ODN (Optical Distribution Network). One PON port of the OLT can be connected to multiple ONUs. [0003] EPON (Ethernet passive Optical Network, Ethernet passive optical network) is a kind of PON technology. It adopts PON technology in the physical layer, uses Ethernet protocol in the link layer, and realizes the connection of Ethernet by using the topology of PON. enter. Therefore, it combines the advantages of PON technology and Ethernet technology. [...

Claims

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Application Information

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IPC IPC(8): H04B10/08H04Q11/00H04J3/16H04B10/075
Inventor 丁平董英华梁选勤吴广东
Owner HUAWEI TECH CO LTD
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