多波长无源光网路的波长切换方法、系统和装置;METHOD, SYSTEM AND DEVICE FOR SWITCHING WAVELENGTH OF MULTI-WAVELENGTH PASSIVE OPTICAL NETWORK (PON)

摘要

本申请提供一种多波长无源光网路的波长切换方法，包括当判断出所述光网路单元需要进行波长切换时，向所述光网路单元下达波长切换指示之前，在多个不同的波长通道分别给所述光网路单元预留相同的时隙，以授权所述光网路单元在波长通道切换过程中可以按照所述光网路单元在当前时刻调整到的上行发射波长；在所述预留的时隙，接收所述光网路单元发送的资料。; sending a downlink wavelength switching command to the optical network unit to instruct the optical network unit to switch a downlink receiving wavelength of the optical network unit to a downlink wavelength of the second wavelength channel; and stopping downlink data duplication and sending the downlink data to the optical network unit only through the second wavelength channel after determining that the downlink receiving wavelength switching of the optical network unit is successful. The present application further provides a multi-wavelength passive optical network system and an apparatus for wavelength switching in the multi-wavelength passive optical network system.