Patent application number | Description | Published |
20130135988 | METHOD AND DEVICE FOR TRANSMITTING/RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM SUPPORTING RELAY NODE - The present description relates to a method for transmitting data from a base station according to one embodiment of the present invention comprises: a step for transmitting to the relay node a signal having a first data to be delivered to a user equipment via the relay node; a step for transmitting to the user equipment a signal having a second data; and a step for receiving from the user equipment a HARQ confirmation response information regarding the first data delivered to the user equipment through the relay node, wherein the first data is retransmitted to the user equipment from the relay node when the HARQ confirmation response information is NACK, and scheduling information for transmitting the first data from the relay node to the user equipment and scheduling information for retransmitting the first data can be designated in advance by the base station. | 05-30-2013 |
20140022982 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS A RELAY NODE - A method and apparatus for transmitting and receiving data in a wireless communication system that supports a relay node are disclosed, wherein an open-loop mode is provided between the relay node and a user equipment. A method for transmitting data from a relay node to a user equipment comprises the steps of receiving information on a first condition related to transmission of the data from a base station; receiving first data including a plurality of sequential codes from the base station; and transmitting second data corresponding a part of the first data to the user equipment in accordance with the first condition if decoding of the first code of the plurality of codes is successfully performed. | 01-23-2014 |
20140254532 | METHOD FOR TRANSMITTING A DOWNLINK SIGNAL IN A BASE STATION COOPERATIVE WIRELESS COMMUNICATION SYSTEM AND AN APPARATUS FOR SAME - The present invention relates to a method for determining a precoding matrix for downlink signal transmission in a base station cooperative wireless communication system. The method includes receiving from a first terminal first channel information between the first base station and the first terminal, and second channel information between a second base station and the first terminal, transferring the first and the second channel informations to the second base station, determining a first precoding matrix for a first channel maximizing the efficiency of transmission to the first terminal, and determining, by the second base station, a second precoding matrix for a third channel between the second base station and the first terminal in order for a signal transmitted from the second base station to the first terminal to be arranged in an area where a signal transmitted from the first base station to the first terminal is not used. | 09-11-2014 |
20140380133 | METHOD FOR NETWORK CODING FOR COOPERATIVE RELAY NETWORK IN WIRELESS COMMUNICATION SYSTEM - A method for processing a signal at a relay node in a wireless communication system is disclosed. More specifically, the relay node receives a codeword broadcast from a source node. Here, the codeword is partitioned into a plurality of sub-blocks by the source node. Then, the relay node generates two network encoded codewords by combining linearly the plurality of sub-blocks and transmits the two network encoded codewords to a destination node. | 12-25-2014 |
20150029926 | METHOD FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS ACCESS SYSTEM AND APPARATUS FOR SAME - Disclosed are a method for transmitting and receiving data in a wireless access system supporting relay nodes, and an apparatus for same. In particular, the present invention comprises: a broadcast phase for receiving an acknowledgement (ACK) signal from a first terminal and a negative acknowledgement (NACK) signal from a second terminal, after a base station transmits first data to the first terminal by using a first precoding vector (w1, B), and second data to the second terminal by using a second precoding vector (w2, B); a listening phase for receiving an ACK signal from the first terminal and a NACK signal from the second terminal, after the base station transmits second data to the first and second terminals by using a third precoding vector (wL); and a cooperative phase for the base station to transmit the second data to the second terminal, in cooperation with the first terminal, by using a fourth precoding vector (wC) which has been chosen for maximizing the transmission efficiency of the second terminal, wherein the first precoding vector, the second precoding vector, and the third precoding vector are chosen so that the total length of the rounds of all phases is minimized. | 01-29-2015 |
20150103731 | METHOD AND APPARATUS FOR SUBSET NETWORK CODING WITH MULTIPLE ANTENNAS BY RELAY NODE IN WIRELESS COMMUNICATION SYSTEM - A method for network coding by a relay node in a wireless communication system is disclosed. The method comprises: receiving an information associated with channel estimation from a base station, determining a number of subset for network coding based on the information associated with channel estimation, receiving at least one codeword from at least one user equipment, and generating re-encoded codeword by network coding based on the number of subset, wherein the number of subset is calculated based on a first outage probability and a second outage probability, and wherein the first outage probability is outage probability of the user Equipment to the base station, and the second outage probability is outage probability of the relay node to the base station. | 04-16-2015 |