Energy-saving control method and device for OLT (optical line terminal) port in TWDM (time-wavelength division multiplexing) PON (passive optical network)

Abstract

The invention discloses an energy-saving control method and device for (optical line terminal) ports in a TWDM (time-wavelength division multiplexing) PON (passive optical network) and belongs to the optical access network field. The energy-saving control method includes the following steps that: whether an OLT port can be selected from an OLT system to enter a sleep mode is judged according to the total service load of the OLT system; when it is judged that the OLT port can be selected to enter the sleep mode, the service load condition of each OLT port is put into statistics, and an OLT port with minimum service load is selected as an OLT port requiring sleep; and an ONU (optical network unit) under the OLT port is migrated to another OLT port, and then, the OLT port is controlled to enter the sleep mode. According to the energy-saving control method and device of the present invention, based on the actual demands of existing network service operation, the OLT port is selected to enter the sleep mode according to the magnitude of the load of the OLT port, and therefore, the scale of service migration can be decreased.

Description

technical field [0001] The invention relates to the field of optical access networks, in particular to an energy-saving control method and device for an OLT (Optical Line Terminal) port in a TWDM (Time Division Wavelength Division Multiplexing) PON (Passive Optical Access Network) network. Background technique [0002] The green energy saving and low carbonization of the communication system is the common concern of operators at home and abroad today, and the access network accounts for more than 70% of the network energy consumption due to its huge scale and numerous devices according to relevant statistics. Therefore, in the access network Research, development and promotion of green energy-saving technologies in the field have good economic and social value. [0003] In the time-division multiplexing PON system, due to the same working wavelength, ONUs (Optical Network Units) under different OLT ports cannot communicate with each other, and can only work under their own O...

AI Technical Summary

Problems solved by technology

[0005] However, when the prior art realizes the energy-saving control of the OLT port in the above-mentioned TWDM PON, the OLT port is selected according to the number of the OLT port to sleep. If there are many active ONUs connected to the selected OLT port, it may cause large-scale traffic. Migration processing, increasing network processing load

In addition, the existing technology has a relatively complete migration control management mechanism for ONUs in an active state (i.e., in a normal working state) during service migration processing control, but lacks a mature migration control mechanism for an ONU in a dormant mode. It may cause the dormant ONUs to fail to successfully complete the migration through the same migration mechanism as the active ONUs, which may cause the dormant ONUs to wake up after the dormancy timer times out and find that they cannot interact with the original OLT port normally, resulting in a large number of dormant ONUs spontaneously restarting and going online, and returning to registration Searching for OLT ports in the active state will cause a large instantaneous load on the entire system and seriously affect the existing network services

Images