Kt Corporation

Dongbu Hitek Co., Ltd.

Hyung-Jin Park

In-Taek Jeong

Nowook Park

Kwangyeol Yoon

Kyoung-Ju Lee

Tae Woo Ha

Jonghak Kim

No Wook Park

Jin-Hee Kim

Jeong-Hwi Kim

Dong Won Lee

Ha Sung Lee

Seong-Bae Jeon

Hae Chung

Jae-Hyoung Park

Sang Chul Seo

Gyeong Doo Kang

Jun Gu Lee

A method for registering customer premises equipment to provide an Internet service to the customer premises equipment by a network management apparatus of an access network structure, wherein the network management apparatus and the customer premises equipment are connected through a bundle cable including a plurality of lines in the access network structure, the method includes: transmitting a registration signal toward a customer premises equipment; receiving registration response signals transmitted from the customer premises equipment through the plurality of lines; analyzing the registration response signals introduced from the plurality of lines and distinguishing a direct signal transmitted through a properly connected line and interference signal from the registration response signals; and establishing a link with the customer premises equipment connected to the properly connected line. The interference signal is introduced through adjacent line of the properly connected line among the plurality of lines.

Network management apparatus, customer premises equipment registration method therefor, and method for providing internet service to customer premises equipment

A method for configurating a transmission mode to provide an Internet service to a customer-premises equipment by an transmission mode configurating apparatus in an access network structure is provided. At least one network management equipment and at least one customer-premises equipment are connected through a bundle of cables including a plurality of transmission lines. The method includes determining the number of transmission lines connected to the customer-premises equipment; determining at least one of available transmission mode to provide depending on the number of transmission lines; if a plurality of available transmission modes are determined, calculating a transmission performance in each of the available transmission modes; and selecting the transmission mode with the highest performance among the plurality of the available transmission modes.

Method and apparatus for configurating transmission mode in copper wire based network

Disclosed is a method for performing transmission frequency control for a subscriber line of a customer premise device by a transmission control apparatus in an access network structure in which at least one network management device and a plurality of customer premise devices are connected through a bundle cable including a plurality of subscriber lines. The transmission control method includes: setting a partial frequency band in an entire service frequency band provided by the subscriber line as a transmission frequency band of the customer premise device; and varying the transmission frequency band in the entire service frequency band when a triggering event occurs, in which traffic of the customer premise device is transmitted and received in the transmission frequency band.

Method and apparatus of transmission control for providing internet service in access network

Disclosed is a device and method for decreasing interference in a cable bundle. The device includes a plurality of concentration devices, an interference measurer, and a concentration device. Each concentration device accesses an uplink and provides a network service to a terminal through a cable bundle in an access section. An interference measurer is connected between the cable bundle and the terminal. The interference measure is configured to measure an interference signal by measuring a signal transmitted to the terminal through the cable bundle, calculate an interference coefficient for generating a quasi-interference signal, and transmit the same to the concentration devices. The concentration devices is configured to calculate an additional signal for offsetting an interference signal by using the interference coefficient, add the additional signal to the original signal, and transmit the additional signal to the cable bundle.

Device for decreasing interference in cable bundle and method thereof

Provided is a method for converting an optical signal into a home network signal to transmit it in a home network signal relay device. The method includes: receiving an optical signal via an optical cable and converting the received optical signal to an Ethernet signal; classifying and storing the converted Ethernet signal according to a type of data; converting a frame of the stored Ethernet signal to a frame of a home network signal; and distributing the converted home network signal to one or more relay terminals or user terminals via transmission lines.

Home network signal relay device in access network and home network signal relay method in access network using same

Provided is a method for mitigating, by an interference mitigation apparatus, interference on a home network transmission line. The method includes pairing domain masters with relay terminals by a signal having a unique frequency, grouping the domain masters, performing Tx/Rx synchronization between the domain masters and the relay terminals, and controlling the domain masters and the relay terminals to transmit/receive data according to the Tx/Rx synchronization. The domain masters of the same groups may be controlled not to simultaneously transmit/receive data.

Interference mitigation apparatus and interference mitigation method for home network transmission line, and communication system using same

A 500 Mbps transmission apparatus is provided. The apparatus uses a 2P line which is capable of providing a 500 megabits-per-second service via a 2P UTP cable by adding a sub-layer which serializes and de-serializes symbols which have rates matched with each other and are synchronized, while maintaining a 1000BASE-T unique hierarchical architecture.

500 Mbps transmission apparatus using 2P line

A capacitor can prevent a problem of step coverage in semiconductor device, caused by a thickness of an insulator film and an upper metal film included a metal-insulator-metal (MIM) capacitor, between the MIM capacitor region and its circumferential region. A capacitor in a semiconductor device includes a first metal film provided with a recess having a predetermined depth over a semiconductor substrate. An insulator film and a second metal film may be formed in the recess with a thickness corresponding to a depth of the recess. The insulator and second metal films are disconnected from an inner lateral side of the recess. A dielectric film including a plurality of plugs is in contact with the first and second metal films and the insulator film. A plurality of metal electrodes is in contact with the plugs over the dielectric film.

Growing community of inventors

Seoul, South Korea

Hyung-Jin Park