Abstract:
PURPOSE: A software update method in a cable network and apparatus thereof are provided to reduce bandwidth for updating software and software update time by updating additional software modules. CONSTITUTION: An OLT(Optical Line Terminal) notifies a software update starting point to an ONU(Optical Network Unit)(S510). The ONU notifies the size of a window which receives ME(Management Entity) to OLT(S520). The OLT downloads modified ONU software to the ONU(S530). The OLT notifies the activation of the updated software to the ONU after the download of the modified ONU software is completed(S540).