US 2012/0057451 A1 · METHOD OF RETRANSMISSION FOR SUPPORTING MIMO IN SYNCHRONOUS HARQ

Abstract

A method for retransmitting data in synchronous Hybrid Automatic Repeat reQuest (HARQ) to support Multiple Input Multiple Output (MIMO) is disclosed. The method includes transmitting a plurality of unit data blocks to a receiver, receiving from the receiver a control channel signal including first feedback information indicating whether the transmission of the plurality of unit data blocks is successful, and retransmitting at least one of the plurality of unit data blocks according to a predetermined order, each unit data block in one Transmission Time Interval (TTI), if a rank is 1 and the first feedback information indicates that the transmission of the plurality of unit data blocks is failed.

Claims19

Dependent claims

A method for performing a Hybrid Automatic Repeat reQuest (HARQ) operation at a transmitter in a Multiple Input Multiple Output (MIMO) system supporting a rank of 2 or higher, the method comprising:

transmitting a plurality of unit data blocks to a receiver;
receiving from the receiver a control channel signal including first feedback information indicating whether the transmission of the plurality of unit data blocks is successful;
and
retransmitting at least one of the plurality of unit data blocks according to a predetermined order, each unit data block in one Transmission Time Interval (TTI), if a rank is 1 and the first feedback information indicates that the transmission of the plurality of unit data blocks is failed.

1 more element

A User Equipment (UE) for supporting a rank of 2 or higher, comprising:

a processor;
and
a Radio Frequency (RF) module for supporting a plurality of antennas and transmitting and receiving radio signals to and from an external device under control of the processor,
wherein the processor controls a plurality of unit data blocks to be transmitted to a Base Station (BS), controls first feedback information indicating whether the transmission of the plurality of unit data blocks is successful to be acquired from a control channel signal by receiving the control channel signal from the BS, and controls at least one of the plurality of unit data blocks to be retransmitted according to a predetermined order, each unit data block in one Transmission Time Interval (TTI), if a rank is 1 and the first feedback information indicates that the transmission of the plurality of unit data blocks is failed.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/255,221Filed 16 Mar 2010

Priority

KR 10-2009-012695118 Dec 2009

Published

8 Mar 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 1/06
By diversity reception: using space diversity
H04L 1/1887
Arrangements specially adapted for the transmitter end: scheduling and prioritising arrangements
H04B 7/0413
Using two or more spaced independent antennas: mIMO systems
H04B 7/0623
Feedback content: auxiliary parameters, e.g. power control [PCB] or not acknowledged commands [NACK], used as feedback information

Family

Application61/160,344Us provisional application · filed 16 Mar 2009

Application61/181,291Us provisional application · filed 27 May 2009

Application61/224,065Us provisional application · filed 9 Jul 2009

Application61/252,150Us provisional application · filed 15 Oct 2009

US 9,209,940 B2Related patent

US 2012/0057451 A1This patent

From the US filing history. Foreign family members aren’t listed.

Method of retransmission for supporting mimo in synchronous harq

Life of this patent

Method of retransmission for supporting mimo in synchronous harq

Life of this patent

Abstract

Claims19