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.
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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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