Optical network unit activating method and device

Abstract

The method includes following steps: S102 step, optical line terminal (OLT) sends first message to inform new optical network unit (ONU) the relevant parameters in prearranged format needed for activating ONU; S104 step, OLT sends out second message to request obtaining sequence number of ONU demanding to enter to passive optical network in giga bit; step S106, after receiving first response message sent from ONU, OLT assigns a ID for first ONU; S108 step, OLT measures distance to ONU, and returns back to S102 after completing measurement. The invention shortens waiting time for obtaining sequence number of ONU, and simplifies complex degree of algorithm for assigning dynamic bandwidth for OLT in procedure of distance measurement.

Description

technical field [0001] The present invention relates to a method and a device for activating an optical network unit, and more particularly, to a method and a device for improving the activation performance of an optical line terminal (OLT) in a gigabit passive optical network (GPON). Background technique [0002] At present, the method for activating the optical line terminal in the gigabit passive optical network system mainly adopts the method used in the ITU-TG.984.3 specification. [0003] Under this method, the common part state machine of the optical line terminal is divided into three parts: [0004] 1. Serial number acquisition readiness: the optical line terminal sends a physical layer operation, management and maintenance (PLOAM) message Upstream_overhead through a certain trigger condition or periodically. Notify the newly added Optical Network Unit (ONU) of the relevant configuration parameters of the GBSOON system. [0005] 2. Serial number acquisition status...

AI Technical Summary

Problems solved by technology

[0007] With this method, when an optical line terminal in a normal working state needs to add a single new optical network unit, it still needs to wait for several serial number acquisition cycles in the serial number acquisition state, which cannot make the optical line terminal operate at the fastest speed. Join request corresponding to a single ONU

At the same time, due to the need to suspend the existing optical network unit during the ranging process, for the case where multiple optical network units join, since the ranging process of multiple units is carried out simultaneously, the dynamic bandwidth of the optical line terminal is required The allocation algorithm can not only guarantee the quality of existing services, but also need to complete the ranging work of multiple optical network units, which increases the complexity of the algorithm

Images