US 9,288,091 B2 · Modulation method and apparatus with consideration of adaptive hybrid automatic repeat request in wireless communication system

Abstract

A modulation method and an apparatus with consideration of adaptive Hybrid Automatic Repeat reQuest (HARQ) in a wireless communication system are provided. The method of a transmission end supporting a hybrid modulation technique in which different types of modulation schemes are mixed, information of a channel state with a reception end is collected. A modulation order of a first type of a modulation scheme and a modulation order of a second type of a modulation scheme are determined. The modulation order of a first type of a modulation scheme and a modulation order of a second type of a modulation scheme form the hybrid modulation technique.

Claims12

Dependent claims

A method of a transmission end supporting a hybrid modulation technique in which different types of modulation schemes are mixed, the method comprising:

acquiring channel state information between the transmission end and a reception end;
determining a first modulation order of a first modulation scheme and a second modulation order of a second modulation scheme based on the channel state information;
and
modulating consecutive bits based on a first modulator corresponding to the first modulation order and the first modulation scheme, and a second modulator corresponding to the second modulation order and the second modulation scheme,
wherein the first modulation scheme and the second modulation scheme form the hybrid modulation technique.

2 more elements

An apparatus of a transmission end supporting a hybrid modulation technique in which different types of modulation schemes are mixed, the apparatus comprising:

a hybrid modulator configured to combine a first modulator of first modulation scheme and a second modulator of a second modulation scheme;
and
a scheduler configured to acquire information of a channel state between the transmission end and a reception end, and to determine a first modulation order of the first modulation scheme and a second modulation order of the second modulation scheme depending on the channel state information, modulating consecutive bits based on the first modulator corresponding to the first modulation order and the first modulation scheme, and the second modulator corresponding to the second modulation order and the second modulation scheme.

Dependencies are inferred from the claim text.

Facts

Application

14/139,107Filed 23 Dec 2013

Priority

KR 10-2012-015090421 Dec 2012

Published

US 2014/0177687 A126 Jun 2014

Granted

15 Mar 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

H04L 27/0008
Modulated-carrier systems: arrangements for allowing a transmitter or receiver to use more than one type of modulation
H04L 1/0003
By adapting the transmission rate: by switching between different modulation schemes
H04L 1/18
In which the return channel carries supervisory signals, e.g. repetition request signals: automatic repetition systems, e.g. Van Duuren systems
H04L 1/1819
Hybrid protocols; Hybrid automatic repeat request [HARQ]: with retransmission of additional or different redundancy

Modulation method and apparatus with consideration of adaptive hybrid automatic repeat request in wireless communication system

Life of this patent

Modulation method and apparatus with consideration of adaptive hybrid automatic repeat request in wireless communication system

Life of this patent

Abstract

Claims12