Electronics and Telecommunications Research Institute

Bin-yeong Yoon

Dong-soo Lee

Hark Yoo

Kyeong-Hwan Doo

Mun-seob Lee

Byung-Tak Lee

Jai-sang Koh

Kwang-Ok Kim

Yong-tae Kim

Sung-Chang Kim

Jong-Deog Kim

Man-soo Han

Sung-hoon Kwak

Geun-yong Kim

Jong-deog Kim

Bong-kyu Kim

Le Quan

A burst mode optical repeater is provided. The burst mode optical repeater receives optical signals, which are transmitted from a plurality of optical network units (ONUs) in a passive optical network (PON) to a central office using a time division multiplexing access (TDMA) method, and relays the received optical signals using an optical-electrical-optical (OEO) method. Since the burst mode optical repeater can be installed anywhere between an optical line terminal (OLT) and the ONUs, the number of subscribers and transmission range that can be supported by a corresponding network can be increased.

Burst mode optical repeater

Provided are an apparatus and method for efficiently and dynamically allocating a bandwidth on a Time Division Multiple Access-based Passive Optical Network (TDMA PON). The dynamic bandwidth allocation apparatus for uplink data transmission of a plurality of Optical Network Units (ONUs) including a plurality of class queues corresponding to Transmission Container (T-CONT) types, the plurality of ONUs connected to an Optical Line Terminal (OLT) on a Passive Optical Network (PON), includes: a class queue information storage unit storing information regarding a bandwidth allocation period and an allocatable bandwidth amount for each T-CONT type; an allocation check table unit checking the bandwidth allocation period for the T-CONT type received from the class queue information storage unit, and determining an allocatable bandwidth amount for the T-CONT type; and a bandwidth allocation unit allocating an uplink bandwidth to the T-CONT type with reference to the bandwidth allocation period and the allocatable bandwidth amount for the T-CONT type, and re-allocating to each ONU an uplink bandwidth remaining after allocating a total uplink bandwidths to all T-CONT types.

Apparatus and method for efficient bandwidth allocation on time division multiple access-based passive optical network (TDMA-PON)

Disclosed are an optical line terminal in a gigabit passive optical network and a method for transmitting a broadcast frame using the same. The optical line terminal allocates second port identifiers to optical network units such that a broadcast frame is prevented from being retransmitted to an optical network unit which has transmitted the broadcast frame to the optical line terminal.

Optical line terminal in gigabit passive optical network and method for transmitting broadcast frame using the same

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Daejeon-si, South Korea

Bin-yeong Yoon