JP2013258764A - 集積回路 - Google Patents
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Abstract
【解決手段】CQIのRSと多重されるACK/NACK信号の2シンボル目と6シンボル目にウォルシュ系列の部分系列(W1,W2)は(+,+)又は(−,−)が適用され、移動局から送信されるCQIのRSには、2シンボル目のRS位相として+が、6シンボル目のRS位相として−が付加される。基地局100は、複数の移動局から送信されたACK/NACK信号とCQI信号との多重信号を受信し、RS合成部119によってCQIのRS位相を揃えて合成する。
【選択図】図8
Description
本発明の実施の形態1に係る基地局100の構成を図6に示し、本発明の実施の形態1に係る移動局200の構成を図7に示す。
本発明の実施の形態2に係る基地局及び移動局の構成は、実施の形態1の図6及び図7に示した構成と同様であるので、図6及び図7を援用して説明する。
本発明の実施の形態3では、CQI信号と応答信号(ACK/NACK信号)とを同時に送信する場合について説明する。すなわち、基地局は予め移動局に対してCQI信号を送信するタイミングを指示しているが、基地局側の下りデータ信号割り当てのタイミングによっては、ある移動局がCQI信号と下りデータ信号に対する応答信号(ACK又はNACK)とを同時に送信する場合がある。このとき、同時に送信されるCQI信号と応答信号とをまとめてCQI+応答信号と表記する。なお、応答信号がNACKであった場合、CQI+NACK信号と表記し、応答信号がACKであった場合、CQI+ACK信号と表記する。
本発明の実施の形態4に係る基地局及び移動局の構成は、実施の形態3の図14及び図15に示した構成と同様であるので、図14及び図15を援用して説明する。
102 制御情報生成部
103,105 符号化部
104,107,213,218 変調部
106 再送制御部
108 マッピング部
109,215,220 IFFT部
110,216,221 CP付加部
111,224 無線送信部
112,201 アンテナ
113,202 無線受信部
114,203 CP除去部
115 相関処理部
116 分離部
117 逆拡散部
118,208 判定部
119 RS合成部
120,206,210 復調部
121,207,211 復号部
204 FFT部
205 抽出部
209 制御部
212 CRC部
214,217,219 拡散部
222 RS位相付加部
223 送信信号選択部
Claims (7)
- 集積回路であって、
第N番目のシンボルと第M番目のシンボルとが逆相となる直交系列よりも同相となる直交系列を多く含む、複数の直交系列の内一つを用いてACK、NACK信号を拡散する制御を行う拡散制御部と、
拡散された前記ACK、NACK信号を送信する制御を行う送信制御部と、を有し、さらに、
第N番目のシンボルと第M番目のシンボルとに、参照信号系列に相互に逆相となる値を乗算した参照信号を配置し、第N番目および第M番目以外のシンボルにCQI信号を配置する制御を行う配置制御部を有し、
前記送信制御部は、前記参照信号および前記CQI信号を送信する制御を行う、
集積回路。 - 前記送信制御部は、ACK、NACK信号送信用フォーマットとCQI信号送信用フォーマットの混合がサポートされた一つの物理リソースを用いて前記ACK、NACK信号の送信、若しくは、前記参照信号および前記CQI信号を送信する制御を行う、
請求項1記載の集積回路。 - 前記一つの物理リソースを用いた送信では、前記ACK、NACK信号送信用フォーマットに第1の巡回シフト値によって定義される系列が対応付けられ、前記CQI信号送信用フォーマットには第2の巡回シフト値によって定義される系列が対応付けられることを特徴とする、
請求項2記載の集積回路。 - 前記複数の直交系列は、1スロットに含まれる7シンボルの内の第1、2、6、7番目のシンボルに対応する直交系列として、[+1,+1,+1,+1]と[+1,−1,−1,+1]とを含み、前記Nは2であり、前記Mは6であることを特徴とする、
請求項1記載の集積回路。 - 基地局から送信された信号に基づいて、前記参照信号系列に相互に逆相となる前記値が乗算されるように制御する、
請求項1記載の集積回路。 - 集積回路であって、
1スロットに含まれる7シンボルの内の第1、2、6、7番目のシンボルに対応する系列長4の直交系列であって、第2番目のシンボルと第6番目のシンボルとが逆相となる直交系列よりも同相となる直交系列を多く含む、複数の直交系列の内一つを用いてACK、NACK信号を拡散する制御を行う拡散制御部と、
拡散された前記ACK、NACK信号を第1、2、6、7番目のシンボルに、第1の参照信号を第3、4、5番目のシンボルに配置する制御を行う配置制御部と、
配置された前記ACK、NACK信号と前記第1の参照信号とを送信する制御を行う送信制御部と、を有し、
前記配置制御部は、第2番目のシンボルと第6番目のシンボルとに、参照信号系列に相互に逆相となる値を乗算した第2の参照信号を配置し、第1、3、4、5、7番目のシンボルにCQI信号を配置する制御を行い、
前記送信制御部は、配置された前記第2の参照信号および前記CQI信号を送信する制御を行う、
集積回路。 - ACK、NACK信号送信用フォーマットとCQI信号送信用フォーマットの混合がサポートされた一つの物理リソースを用いてACK、NACK信号の送信、若しくは、参照信号およびCQI信号の送信する制御を行う集積回路。
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JP2013179688A Active JP5634578B2 (ja) | 2007-08-13 | 2013-08-30 | 集積回路 |
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