MOBILE COMMUNICATION SYSTEM AND DATA TRANSMISSION METHOD THEREOF

Title:

MOBILE COMMUNICATION SYSTEM AND DATA TRANSMISSION METHOD THEREOF

Document Type and Number:

WIPO Patent Application WO/2012/165782

Kind Code:

A2

Abstract:

A data transmission method and apparatus is provided for transmitting UL grant or ACK/NACK at flexible subframes in a Time Division Duplex (TDD) system. The data transmission method of a base station according to the present invention includes configuring subframes irrelevant to Hybrid Automatic Repeat reQuest (HARQ) process as flexible subframes; scheduling uplink transmission at the flexible subframes with uplink grant; receiving uplink data transmitted by a terminal at the flexible subframes as scheduled; and transmitting, when decoding the uplink data fails, HARQ acknowledgement/negative acknowledgement (ACK/NACK) or uplink grant to request retransmission of the uplink data. The data transmission method of the present invention is capable of utilizing flexible subframes for uplink transmission without influencing the uplink HARQ process associated with the downlink subframes configured as flexible subframes.

Inventors:

CHOI SEUNG HOON (KR)
KIM YOUNG BUM (KR)
CHO JOON YOUNG (KR)
JI HYOUNG JU (KR)

Application Number:

PCT/KR2012/003873

Publication Date:

December 06, 2012

Filing Date:

May 17, 2012

Export Citation:

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Assignee:

SAMSUNG ELECTRONICS CO LTD (KR)
CHOI SEUNG HOON (KR)
KIM YOUNG BUM (KR)
CHO JOON YOUNG (KR)
JI HYOUNG JU (KR)

International Classes:

H04L1/18; H04L27/26

Domestic Patent References:

WO2010049587A1	2010-05-06
WO2011077288A2	2011-06-30

Foreign References:

US20090274078A1	2009-11-05
US20100322165A1	2010-12-23

Other References: