Activation method and device, control device, network equipment and optical network system

A technology for network equipment and optical network units, applied in the field of communication, can solve problems affecting existing system communication, signal attenuation, etc., and achieve the effects of enhancing communication performance, reducing delay effects, and avoiding signal attenuation.

Active Publication Date: 2021-01-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The activation method, device, control device, network equipment, and optical network system provided by the embodiments of the present invention mainly solve the technical problem that an optical splitter needs to be used when using the wavelength resource in the existing system as the third wavelength in the related art, Causes signal attenuation in the existing system and affects the communication of the existing system

Method used

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  • Activation method and device, control device, network equipment and optical network system
  • Activation method and device, control device, network equipment and optical network system
  • Activation method and device, control device, network equipment and optical network system

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Embodiment 1

[0059] The traditional network architecture of passive optical network such as figure 1 As shown, the channel between the OLT and the ONU transmits both data and management information, that is, the OLT 11 and the ONU 12 communicate through one channel. With the development of mobile networks, passive optical networks have gradually become one of the bearer technologies for mobile fronthaul, mobile backhaul, sensor networks, and vehicle-mounted networks. The transmission delay requirements of the network are very strict.

[0060] The transmission delay in passive optical network includes: optical transmission delay, delay caused by opening quiet window and bandwidth allocation delay, etc. Among them, the optical transmission delay is related to the optical fiber distance, and the transmission time of 20Km is about 100us.

[0061] The open quiet window is used for the OLT to discover the ONU and measure the ONU, and it belongs to the overhead caused by the initialization of t...

Embodiment 2

[0092] In Embodiment 1, the activation information for the new system ONU to be activated on the first OLT is sent by the first OLT to the second OLT, and the first OLT can directly send the activation information to the second OLT by itself, or through an activation agent The ONU sends the activation information to the second OLT. This embodiment provides another ONU activation method. In this ONU activation scheme, the first OLT does not need to send activation information to the second OLT or the activation agent ONU. Please refer to Figure 5 A flow chart of the ONU activation method shown:

[0093] S502: The ONU activates on the second OLT in the new system.

[0094] In this embodiment, after the second OLT starts the registration process, the ONUs in the new system can go to the second OLT for activation. If the ONU is the first ONU to be activated on the second OLT in the new system, the ONU will be directly activated by the second OLT and selected as an activation pr...

Embodiment 3

[0108] Among the aforementioned embodiments, the new system ONU (except for the activation process of the activation agent ONU on the second OLT) adopts DAW as a wavelength resource specially used for the activation process, but DAW is a wavelength resource of the existing system, so if There is no existing system in the PON system. For example, with the continuous development of the PON system, the existing system is gradually replaced by the new system, so only the new system remains in the PON system. In this case, the new system ONU cannot be adopted. The DAW resources in the existing system are activated, and the following is combined Figure 6 The flow chart shown illustrates this ONU activation method. In this embodiment, it is assumed that the ONU identification information is the SN of the ONU:

[0109] S602: The OLT opens a quiet window on the uplink third wavelength channel, and broadcasts the SN request on the low-delay downlink channel.

[0110] Undoubtedly, sinc...

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Abstract

An embodiment of the invention provides an activation method and device, a control device, network equipment and an optical network system. A new system ONU is activated on a first OLT of an existingsystem, then the first OLT sends activation information of the new system ONU to a second OLT of the new system or an activation agent ONU activated by the second OLT sends the activation informationto the second OLT, and the activation of the ONU of the new system on the second OLT is realized. Therefore, the DAW channel is only used for communication between the new system ONU and the first OLT, and the problem of OLT signal attenuation of the existing system due to use of an optical splitter is prevented. Therefore, according to the method and the device disclosed in the scheme provided bythe embodiment of the invention, the delay influence on the service when the ONU is activated can be reduced, the communication effect of the existing system cannot be influenced by the existence ofthe optical splitter, and the communication performance of the PON is enhanced.

Description

technical field [0001] The present invention relates to the communication field, in particular to an activation method, device, control device, network equipment, and optical network system. Background technique [0002] A large part of the transmission delay in PON (Passive Optical Network, Passive Optical Network) is that when the ONU (Optical Network Unit, Optical Network Unit) is activated, the OLT (optical line terminal, optical line terminal) is open to the OLU to be activated Caused by the quiet window: During the opening of the quiet window, only the ONU to be activated is allowed to send the upstream signal for activation, while other ONUs that have been activated and work normally cannot send the upstream signal in the quiet window. Therefore, if an ONU that works normally has uplink data to send just during the quiet window, the uplink data it sends will be delayed. [0003] At present, the standard organization is also discussing opening the quiet window on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00
CPCH04Q11/0067H04Q11/0062H04Q2011/0079H04Q2011/0086H04Q2011/0064H04B10/272H04B10/27
Inventor 张伟良郭勇魏君珊袁立权
Owner ZTE CORP
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