Abstract:
PURPOSE: An OAM(Operation, Administration, and Maintenance) message transmission method in a PON(Passive Optical Network) system and error processing method are provided to simplify an OAM message transmission and reception procedure by using an OAM packet type including a variable length. CONSTITUTION: An OLT(Optical Line Terminal) transmits created OAM messages to an ONU(Optical Network Unit). The OLT receives a response OAM message from the ONU(S502). The created OAM message includes a message identifier for one or more ethernet switching control creation messages, message content lengths, and a message content field. The created OAM message includes the message identifier, the message content lengths, and the message content field for one or more ethernet switching control response messages.
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).