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Communication method, device and system of passive optical network

A technology of passive optical network and communication method, applied in the field of communication method, device and system of passive optical network, can solve problems such as communication interruption of passive optical network system

Active Publication Date: 2019-05-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a PON communication method, related equipment, and PON, which are used to solve the problem of communication interruption caused by failure of the passive optical network system, realize rapid protection switching of the passive optical network system, and further improve the reliability of the system

Method used

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  • Communication method, device and system of passive optical network
  • Communication method, device and system of passive optical network
  • Communication method, device and system of passive optical network

Examples

Experimental program
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Effect test

Embodiment 1

[0137] like image 3 as shown, image 3 It is a structure diagram of active / standby switchover. image 3 OLT 0 is the master OLT, and OLT 1 ​​is the backup OLT. The working port 0 of the master OLT is connected to the optical splitter through the trunk fiber, the backup port 1 of the backup OLT is connected to the splitter through the backup fiber, and the other end of the splitter is connected to each ONU connection, wherein, the active OLT and the standby OLT transmit data with each ONU in real time through an optical splitter.

[0138] The main OLT, that is, OLT 0, includes at least 4 transceivers: transceiver 1, transceiver 2, transceiver 3, and transceiver 4. Each transceiver works on a working wavelength channel, and each wavelength channel uses a pair of upper and lower Uplink working wavelength, for example: Transceiver 1 works on working wavelength channel 1, and working wavelength channel 1 includes uplink working wavelength channel and downlink working wavelength ...

Embodiment 2

[0183] like Figure 5 as shown, Figure 5 It is another structure diagram of active / standby switchover. Figure 5 The structure of OLT 0 in image 3 The structure of the main OLT, ie OLT0, is the same. For the specific structure of OLT 0, please refer to image 3 description, which will not be repeated here.

[0184] exist Figure 5 In the architecture diagram of active-standby switchover, OLT0 predetermines the protection relationship between the working wavelength channels of OLT0. For example, the working wavelength channel 2 of the OLT is used as the backup wavelength channel of the working wavelength channel 3, that is, the working wavelength channel 2 and the working wavelength channel 3. A protection relationship is established between them, and the protection relationship is expressed in the PLOAM message as the identification information of the working wavelength channel and the identification information of the backup wavelength channel, and the message is sent ...

Embodiment 3

[0206] like Figure 7 as shown, Figure 7 It is another structure diagram of active / standby switchover. Figure 7 The structure of OLT 0 can be found in image 3 In the main use OLT, that is, the structure of OLT0.

[0207] Figure 7 The structure of the ONU in the image 3 The structure of the ONU in the middle is different. Each ONU supports two transceivers. If the two transceivers use different transceiver wavelengths, each ONU can work on two different wavelength channels at the same time. In this way, the OLT0 can flexibly adjust the service traffic on two different wavelength channels of the ONU according to the load conditions of each wavelength channel, so as to achieve the purpose of load balancing.

[0208] Any ONU includes at least 2 transceivers, and the transceivers work on two different working wavelength channels. For example, ONU1 includes transceiver 1 and transceiver 2. Transceiver 1 works on working wavelength channel 1, and working wavelength channel ...

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Abstract

The invention discloses a communication method, device and system of a passive optical network. The method includes: the optical network unit receives the first message sent by the optical line terminal, the first message carries the backup wavelength channel identification information; when the optical network unit detects a fault, the optical network unit sends the optical network unit The working wavelength channel is switched to the backup wavelength channel identified by the backup wavelength channel identification information; the optical network unit performs data communication through the switched backup wavelength channel, realizing fast protection switching of the passive optical network system, and then Improve the reliability of the system.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a communication method, device and system of a passive optical network. Background technique [0002] Passive Optical Network (PON, Passive Optical Network) technology is a point-to-multipoint optical fiber access technology. With the continuous development of technology, EPON (Ethernet Passive Optical Network, Ethernet Passive Optical Network) and GPON have emerged. (Gigabit passive Optical Network, gigabit capacity passive optical network) and NGPON (next generation PON), etc. In order to ensure the reliability of the network, the PON network needs to support fast switching, figure 1 Shown is the network structure of PON, including the first OLT10 (Optical Line Terminal, optical line terminal), the second OLT12, ODN (Optical Distribution Network, optical distribution network) and ONU (Optical Network Unit, optical network unit), when the first When OLT10 is used...

Claims

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Application Information

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IPC IPC(8): H04J14/02H04B10/25
CPCH04J14/0293H04J14/08H04B10/25H04J14/02H04B10/038H04J14/0227H04Q11/0005H04Q2011/0016H04Q2011/0043
Inventor 高波
Owner HUAWEI TECH CO LTD
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