US 8,570,852 B2Granted

Method of transmitting control signals in wireless communication system

AssigneeLG Electronics Inc.

InventorsJin Sam Kwak, Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim

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Abstract

A method of transmitting control signals in a wireless communication system includes multiplexing a first control signal with a second control signal in a slot, the slot comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain, the plurality of OFDM symbols being divided into a plurality of data OFDM symbols and a plurality of reference signal (RS) OFDM symbols, wherein the first control signal is mapped to the plurality of data OFDM symbols after the first control signal is spread by a base sequence in the frequency domain, the RS is mapped to the plurality of RS OFDM symbols, the second control signal is mapped to at least one of the plurality of RS OFDM symbols, and transmitting the first control signal and the second control signal in the slot.

Claims16

Dependent claims

A method of transmitting control signals in a wireless communication system, wherein the method comprises:

configuring, by a user equipment, an uplink control channel in a subframe, the subframe comprising two consecutive slots, each slot comprising a plurality of data orthogonal frequency division multiplexing (OFDM) symbols and first and second reference signal (RS) OFDM symbols, wherein the uplink control channel has a first mode for transmitting a channel quality indicator (CQI) signal and a second mode for transmitting both a CQI signal and an acknowledgment/non-acknowledgement (ACK/NACK) signal;
in any of the first and second modes of the uplink control channel:
generating a plurality of spread modulation symbols based on the CQI signal using a frequency domain sequence;
and
mapping the spread modulation symbols to the plurality of data OFDM symbols of the slot;
in the first mode of the uplink control channel:
generating two CQI RS symbols for use, by a base station, to demodulate the CQI signal;
and
mapping the two CQI RS symbols to the first and second RS OFDM symbols of the slot, respectively;
in the second mode of the uplink control channel:
generating first and second RS symbols for use, by a base station, to demodulate the CQI signal, wherein the first RS symbol is independent from the ACK/NACK signal, and the ACK/NACK signal is multiplexed into the second RS symbol;
and
mapping the first and second RS symbols to the first and second RS OFDM symbols of the slot, respectively;
transmitting, by the user equipment, the data and RS OFDM symbols mapped according to one of the first and second modes on the uplink control channel in the subframe.

11 more elements

A transmission equipment configured for operating in a wireless communication system and for transmitting control signals,

wherein the transmission equipment comprises a transmission processor configured for:
configuring an uplink control channel in a subframe, the subframe comprising two consecutive slots, each slot comprising a plurality of data orthogonal frequency division multiplexing (OFDM) symbols and first and second reference signal (RS) OFDM symbols, wherein the uplink control channel has a first mode for transmitting a channel quality indicator (CQI) signal and a second mode for transmitting both a CQI signal and an acknowledgment/non-acknowledgement (ACK/NACK) signal;
in any of the first and second modes of the uplink control channel:
generating a plurality of spread modulation symbols based on the CQI signal using a frequency domain sequence;
and
mapping the spread modulation symbols to the plurality of data OFDM symbols of the slot;
in the first mode of the uplink control channel:
generating two CQI RS symbols for use, by a base station, to demodulate the CQI signal;
and
mapping the two CQI RS symbols to the first and second RS OFDM symbols of the slot, respectively;
in the second mode of the uplink control channel:
generating first and second RS symbols for use, by a base station, to demodulate the CQI signal, wherein the first RS symbol is independent from the ACK/NACK signal, and the ACK/NACK signal is multiplexed into the second RS symbol;
and
mapping the first and second RS symbols to the first and second RS OFDM symbols of the slot, respectively;
transmitting the data and RS OFDM symbols mapped according to one of the first and second modes on the uplink control channel in the subframe.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/457,987Filed 27 Apr 2012 · continuation
Priority: KR 10-2008-000919229 Jan 2008
Published: US 2012/0213176 A123 Aug 2012
Granted: 29 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification24 codes

H04L 5/0044
Arrangements for allocating sub-channels of the transmission path: allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
H04J 11/0026
Interference mitigation or co-ordination: of multi-user interference
H04L 1/0026
Characterised by the signalling: transmission of channel quality indication
H04L 5/0007
Time-frequency: the frequencies being orthogonal, e.g. OFDM or DMT

Family

Application60/944,074Us provisional application · filed 14 Jun 2007
PCT/KR2008/003339Parent of this continuation · filed 13 Jun 2008
Application13/050,427Parent of this continuation · filed 17 Mar 2011
US 2012/0213176 A1Pre-grant publication · published 23 Aug 2012
US 8,503,286 B2Parent of this continuation
Application12/451,049Parent of this continuation
US 7,929,415 B2Parent of this continuation
US 2010/0067461 A1Published application
US 2011/0222393 A1Published application
US 8,570,852 B2This patent

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

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