Samsung Electronics Co., Ltd.

Yonsei University

Jung Min So

Mi-Sun Do

Hee Jung Byun

Ki-Sun Oh

Mi Sun Do

Jaiyong Lee

Jai Yong Lee

Sung Gook Lim

Sunggook Lim

Rakesh Taori

June Hwang

Yung Soo Kim

Seong-Lyun Kim

Il Won Kwon

Jung Hee Han

A communication system and a communication method using relay terminals are provided. A communication system includes a base station, a target terminal transmitting uplink data to the base station or receiving downlink data from the base station, and a plurality of relay terminals cooperatively relaying the uplink data/downlink data to the base station/target terminal, the plurality of relay terminals being grouped into at least one group.

Communication system and communication method using relay terminals

A system for controlling a station operation mode is provided. The system for controlling a station operation mode, including: a distance information generation unit measuring a distance between a first communication station and a second communication station and generating distance information; a distance information comparison unit comparing the distance information and a predetermined threshold distance; and an operation mode determination unit determining any one of an active mode and an idle mode as an operation mode of the second communication station, based on a comparison result of the distance information comparison unit.

Method and system for controlling station operation mode

A replay station and a method of operating the relay station in a multi-hop communication system are provided. A method of operating a relay station of a multi-hop communication system includes monitoring a delay of the relay station, determining whether the monitored delay exceeds a predetermined threshold, and controlling the relay station to be handed over to another upper relay station that is different from a connecting upper relay station.

Relay station and method of operating relay station in multi-hop communication system

A wireless communication system with femtocells and a method for mitigating inter-cell interference in the wireless communication system are provided. The interference control method includes notifying a mobile station of entry to a home cell, when the mobile station enters a macrocell including a femto base station with which the mobile station is registered, transmitting, by the mobile station, a femtocell driving control message to the femto base station at a predetermined transmission power, when the mobile station enters a femtocell of the femto base station, and switching on, by the femto base station, a transmitter, when the femtocell driving control message is received.

Communication system with femtocells and an interference control method therefor

A communication system, a relay station, a mobile station, a base station, and a method using a network coding scheme are provided. A communication system includes a relay station, a mobile station, and a base station. A relay station includes a message receiving unit to receive a downlink message transmitted from a base station and an uplink message transmitted from a mobile station, a message generation unit to generate a network coded message by coding the downlink message and the uplink message according to a network coding scheme, and a message transmission unit to transmit the network coded message to the base station and the mobile station during the same time slot.

Method and device for communicating using network coding scheme

A relay station, including a delay information storage unit to store remaining delay information generated in a path from a target relay node to a destination node; an order determination unit to determine an order of processing service packets with a plurality of quality of service (QoS) levels using the remaining delay information, the service packets being received from a neighbor node; and a processing unit to process the service packets in the determined order.

Relay station operated according to QOS level of service packet and method of operating relay station

A mobile system, a mobile system, a method for managing a path in a multi-hop cellular network, and a data frame used in the mobile system. The mobile system includes: an information receiving unit to receive information about at least one of link quality, traffic load, and frequency channel size, via a network; and a path establishment unit to establish a path to a base station based on the received information.

Method and mobile system for path management in multi-hop cellular network and data frame used for the method and the mobile system

Relay station operated according to QoS level of service packet and method of operating relay station

A system of controlling a cell coverage is provided. The system includes: a state information generation unit to generate state information by considering at least one of a cell coverage and a traffic load of a target cell; an adjacent state information identification unit to identify adjacent state information which is generated by considering at least one of a cell coverage and a traffic load of an adjacent node, from at least one adjacent node; and a cell coverage control unit to control the cell coverage of the target cell based on the state information and the adjacent state information.

Growing community of inventors

Suwon-si, South Korea

Jung Min So