Control channel information transmission method, and base station and terminal using the same method

Patent metadata

Field	Value
Publication number	US-9191089-B2
Application number	US-201213683742-A
Country	US
Kind code	B2
Filing date	Nov 21, 2012
Priority date	Sep 30, 2005
Publication date	Nov 17, 2015
Grant date	Nov 17, 2015

Abstract

A radio communication system that includes an encoder configured to perform error correction coding for control channel information by a given error correction coding rate; a modulator configured to perform modulation of the error correction coded control channel information for transmission according to a given modulation scheme; and a processing section configured to perform code decimation of the error correction coded control channel information prior to the modulation, the code decimation being different according to whether the Multi Input Multi Output is applied or not.

First claim

What is claimed is:

1. A radio communication system comprising:
an encoder configured to perform error correction coding for control channel information by a given error correction coding rate;
a modulator configured to perform modulation of an error correction coded control channel information for transmission according to a given modulation scheme; and
a processor configured to enlarge an amount of code decimation of the control channel information prior to the modulation when Multi Input Multi Output is applied, compared to the amount of the code decimation when the Multi Input Multi Output is not applied;
wherein the processor is configured to perform so that a number of bits of a transmitted error correction coded control channel information when the Multi Input Multi Output is applied becomes identical to that when the Multi Input Multi Output is not applied.

2. The radio communication system according to claim 1 , further comprising:
a receiver configured to receive the modulated error correction coded control channel information transmitted from a transmission side.

3. The radio communication system according to claim 1 , further comprising:
a transmitter configured to transmit the modulated error correction coded control channel information.

4. A radio communication method comprising:
at transmission side, performing error correction coding for control channel information by a given error correction coding rate;
enlarging an amount of code decimation of the control channel information when Multi Input Multi Output is applied, compared to the amount of the code decimation when the Multi Input Multi Output is not applied, so that a number of bits of a transmitted error correction coded control channel information when the Multi Input Multi Output is applied becomes identical to that when the Multi Input Multi Output is not applied; and
performing modulation of an error correction coded control channel information for transmission according to a given modulation scheme.

5. The radio communication method according to claim 4 , further comprising:
at a reception side, receiving the modulated error correction coded control channel information transmitted from the transmission side.

Assignees

• Fujitsu Ltd

Inventors

• Obuchi Kazuhisa
• Furukawa Hideto
• Kawabata Kazuo
• Tajima Yoshiharu
• Kawasaki Yoshihiro

Classifications

• H04L1/0026

  Transmission of channel quality indication · CPC title

• H04L5/006

  Quality of the received signal, e.g. BER, SNR, water filling · CPC title

• H04B7/0482 Primary

  Adaptive codebooks · CPC title

• H04L25/067

  providing soft decisions, i.e. decisions together with an estimate of reliability (H04L25/068 and H04L25/069 take precedence; sequence estimation techniques H04L25/03178) · CPC title

• H04L1/001

  applied to control information · CPC title