| Patent application number | Description | Published |
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| 20110058810 | OPTICAL NETWORK UNIT (ONU) AND METHOD OF OPERATING THE ONU - Provided is an Optical Network Unit (ONU) and a method of operating the ONU. The ONU may include: a measurement unit to measure a downstream optical signal strength of downstream data received from an Optical Line Termination (OLT) via an optical splitter; a determination unit to determine an upstream optical signal strength based on the measured downstream optical signal strength; and a communication unit to transmit, to the OLT via the optical splitter, upstream data generated based on the determined upstream optical signal strength. | 03-10-2011 |
| 20110099545 | METHOD AND APPARATUS FOR SIMULTANEOUSLY UPDATING SOFTWARE INSTALLED IN TERMINALS IN COMMUNICATION SYSTEM - Provided is a method of controlling a server to simultaneously update software installed in a plurality of terminals in a communication system, the method including: receiving an update message from each of the terminals; determining a size of a transmission window based on the update message; processing an image of software to be transmitted to the plurality of terminals, based on the size of the transmission window; and transmitting the image of software to the plurality of terminals. | 04-28-2011 |
| 20110103382 | METHOD AND APPARATUS FOR FILTERING MULTICAST PORT IDENTIFIER IN GIGABIT-CAPABLE PASSIVE OPTICAL NETWORK (GPON) SYSTEM - Provided is an apparatus for filtering a multicast port identifier, the apparatus including: a processor to receive an Internet Group Management Protocol (IGMP) message from a switching unit, to verify a traffic reception request received from a subscriber terminal based on the IGMP message, and to store a value in a filtering register based on the traffic reception request; and an Optical Network Unit (ONU) Media Access Control (MAC) manager to filter a packet to be forwarded to the subscriber terminal, using a port identifier for traffic forwarding and reception with the subscriber terminal, and using the value of the filtering register indicating an existence of traffic to be forwarded to the subscriber terminal. | 05-05-2011 |
| 20110129223 | APPARATUS AND METHOD FOR ALLOCATING DYNAMIC BANDWIDTH - A dynamic bandwidth allocation apparatus of a passive optical network detects guarantee agreement information of each transmission container (T-CONT) queue of at least one optical network unit (ONU) that is connected to the dynamic bandwidth allocation apparatus in order to dynamically allocate a bandwidth is provided. The dynamic bandwidth allocation apparatus sets a queue threshold according to a buffer size of each T-CONT queue of at least one ONU, and calculates a service level agreement (SLA) parameter of at least one ONU using guarantee agreement information and a queue threshold. The dynamic bandwidth allocation apparatus allocates a bandwidth for every frame of each ONU using each SLA parameter of at least one ONU. | 06-02-2011 |
| Patent application number | Description | Published |
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| 20100135665 | BURST MODE OPTICAL REPEATER - 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. | 06-03-2010 |
| 20100221006 | APPARATUS AND METHOD FOR EFFICIENT BANDWIDTH ALLOCATION ON TIME DIVISION MULTIPLE ACCESS-BASED PASSIVE OPTICAL NETWORK (TDMA-PON) - 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. | 09-02-2010 |
| 20110020002 | OPTICAL LINE TERMINAL, METHOD FOR OPERATING OPTICAL RECEPTION INTERFACE, AND METHOD FOR PROCESSING CONTINUOUS MODE SIGNAL OF OPTICAL LINE TERMINAL - An Optical Line Terminal (OLT) configuring a Passive Optical Network (PON) is provided. The OLT includes an optical transmitter that transmits an optical signal to Optical Network Units (ONUs) in a downstream direction, an optical receiver that includes general Continuous Mode (CM) signal processing elements to recover clocks and data from optical signals transmitted by ONUs in an upstream direction, and a controller that controls the ONUs such that the optical receiver continuously receives an optical signal. An OLT interface for receiving an optical signal can be implemented using the general CM signal processing elements. | 01-27-2011 |
