US 8,509,175 B2Granted

Method for transmitting downlink control signal

AssigneeLG Electronics Inc.

InventorsHak Seong Kim, Sung Duk Choi, Ki Jun Kim, Suk Hyon Yoon, Joon Kui Ahn, Bong Hoe Kim, Dong Youn Seo, Young Woo Yun, Seong Hoon Jeong, Eun Sun Kim, Dae Won Lee, Jung Hoon Lee

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Abstract

A method of transmitting a downlink control signal is disclosed, by which localized allocation and distributed allocation are efficiently used in transmitting a downlink control signal. The present invention includes multiplexing the downlink control signal in a manner of if there exists downlink data transmission to a prescribed UE, applying localized allocation to a transmission of the downlink control signal including the scheduling information on the uplink data transmission of the UE and applying distributed allocation to another transmission of the downlink control signal and transmitting the multiplexed downlink control signal.

Claims8

Dependent claims

A method for a user equipment (UE) to transmit uplink data to a base station, the method comprising:

receiving, from the base station, a downlink control signal including scheduling information for the uplink data transmission;
trying to decode the downlink control signal in a unit which size corresponds to a multiplication of an integer value, selected from among predetermined multiple integer values, by a predetermined frequency domain size unit for a transmission of the downlink control signal, wherein the predetermined multiple integer values correspond to integer values of multiple downlink control signal transmission formats, wherein a smallest time-frequency resource element is defined by one subcarrier in a frequency domain and one orthogonal frequency division multiplexing (OFDM) symbol in a time domain, wherein the predetermined frequency domain size unit for the transmission of the downlink control signal is predetermined to comprise a plurality of the smallest time-frequency resource element arranged in the frequency domain at one OFDM symbol;
and
transmitting the uplink data to the base station according to the scheduling information of the downlink control signal, upon decoding the downlink control signal.

1 more element

A method for a base station to receive uplink data from a user equipment (UE), the method comprising:

determining a transmission format among multiple transmission formats for the downlink control signal including scheduling information for an uplink data transmission of the UE, wherein a smallest time-frequency resource element is defined by one subcarrier in a frequency domain and one orthogonal frequency division multiplexing (OFDM) symbol in a time domain, wherein each of the multiple transmission formats is defined such that the downlink control signal is transmitted by a unit which size corresponds to a multiplication of an integer value, differently determined for each of the multiple transmission formats, by a predetermined frequency domain size unit for transmitting the downlink control signal, wherein the predetermined frequency domain size unit for transmitting the downlink control signal is predetermined to comprise a plurality of the smallest time-frequency resource elements arranged in the frequency domain at one OFDM symbol;
transmitting the downlink control signal in accordance with the determined transmission format to the UE;
and
receiving the uplink data from the UE, wherein a transmission of the uplink data from the UE corresponds to the scheduling information of the downlink control signal.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 13/217,204Filed 24 Aug 2011 · continuation
Priority: KR 10-2007-00005263 Jan 2007
Published: US 2011/0305219 A115 Dec 2011
Granted: 13 Aug 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04L 1/0027
Characterised by the signalling: scheduling of signalling, e.g. occurrence thereof
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals
H04L 27/261
Signal structure: details of reference signals
H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal

Family

Application60/827,852Us provisional application · filed 2 Oct 2006
Application60/943,783Us provisional application · filed 13 Jun 2007
PCT/KR2007/004824Parent of this continuation · filed 2 Oct 2007
US 2011/0305219 A1Pre-grant publication · published 15 Dec 2011
Application12/444,104Parent of this continuation
US 8,027,297 B2Parent of this continuation
US 2010/0098020 A1Published application
US 8,509,175 B2This patent

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