JP2011045105A - 集積回路 - Google Patents
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
- H04L1/0004—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes applied to control information
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
- H04L1/0005—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes applied to payload information
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- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H04L1/0019—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
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- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
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- H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
- H04L1/0035—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter evaluation of received explicit signalling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
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Abstract
【解決手段】データチャネルと制御チャネルを多重送信し、両チャネルに適応変調を適用する場合、MCS選択部108には、1つのデータチャネル用CQIテーブルと、複数の制御チャネル用CQIテーブルとを設け、テーブル選択MCS決定部201は、端末の送信帯域幅に応じて前記複数のテーブルを切り替え、切り替えたCQIテーブルを用いて制御チャネルのMCSを決定する。
【選択図】図7
Description
図6は、本発明の実施の形態1に係る無線通信端末装置の構成を示すブロック図である。以下、図6を参照して無線通信端末装置の構成について説明する。無線受信部102は、アンテナ101を介して受信した信号をベースバンド信号に変換し、CP除去部103に出力する。
本発明の実施の形態2に係る無線通信端末装置の構成は、実施の形態1の図6に示した構成と同様であるので、図6を援用し、重複する説明は省略する。
制御チャネル用CQI=CQI+Σオフセット[条件] …(1)
図13は、本発明の実施の形態3に係るCQIテーブルであり、式(1)に倍率(N)を乗算することにより、基本テーブルの設定範囲を拡大あるいは縮小することができる。制御チャネル用CQIは、式(2)を用いて算出される。
制御チャネル用CQI=floor(N×(CQI+Σオフセット[条件]))…(2)
ここで、Nは小数である。
図14は、本発明の実施の形態4に係るCQIテーブルであり、実施の形態3に示した式(2)を用いて算出される。ただし、Nは小数であり、N=N_A(CQI<CQI_TH)、N=N_B(CQI>CQI_TH)とする。図14は、具体的には、CQI_TH=3、N_A=0.7、N_B=1.3の場合を示している。このように、CQIの大きさによって倍率(N)を変えることにより、より精度よくMCSを決定することができる。
102 無線受信部
103 CP除去部
104 FFT部
105 伝送路推定部
106 復調部
107 復号化部
108 MCS選択部
109、110 符号化変調部
111 チャネル多重化部
112 DFT−s−OFDM部
113 CP付加部
114 無線送信部
201 テーブル選択MCS決定部
202 MCS決定部
301 CQIオフセットMCS決定部
Claims (12)
- データチャネルのMCSと、制御データの種類毎の補正値とを用いて、前記制御データを符号化する符号化処理と、
前記データチャネルのデータと、前記制御データの種類に応じた符号化率の、前記符号化された制御データとを送信する送信処理と、
を制御する集積回路。 - 前記符号化処理は、前記制御データの種類毎に、異なる符号化率の前記符号化された制御データを生成する、
請求項1に記載の集積回路。 - 前記符号化処理は、前記データチャネルの前記MCSと前記補正値とに基づいて決定されたMCSを用いて、前記制御データを符号化する、
請求項1又は請求項2に記載の集積回路。 - 前記制御データは、ACK/NACK又はCQIである、
請求項1から請求項3のいずれかに記載の集積回路。 - 前記送信処理は、前記データと前記符号化された制御データとを多重して送信する、
請求項1から請求項4のいずれかに記載の集積回路。 - 制御情報を受信する受信処理、をさらに制御し、
前記符号化処理は、受信した前記制御情報に基づいて、前記データチャネルのMCSを決定する、
請求項1から請求項5のいずれかに記載の集積回路。 - 前記符号化処理は、受信した前記制御情報と、前記補正値とを用いて、前記制御データを符号化する、
請求項6に記載の集積回路。 - 前記符号化処理は、前記補正値を用いて、受信した前記制御情報を補正し、補正した制御情報に基づいて、前記制御データを符号化する、
請求項6又は請求項7に記載の集積回路。 - 前記制御情報は、CQIである、
請求項6から請求項8のいずれかに記載の集積回路。 - 前記補正値は、所定のオフセット量に、前記制御データの種類毎の倍率を乗算したものである、
請求項1から請求項9のいずれかに記載の集積回路。 - 前記補正値は、前記データと前記制御データとを送信する無線送信装置のパラメータに関連付けられている、
請求項1から請求項10のいずれかに記載の集積回路。 - 前記パラメータは、送信帯域幅、スケジューリング方法、周波数ホッピング又は再送回数である、
請求項11に記載の集積回路。
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JP2010210863A JP5283674B2 (ja) | 2008-01-04 | 2010-09-21 | 無線通信装置、無線通信方法及び集積回路 |
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JP2010210863A JP5283674B2 (ja) | 2008-01-04 | 2010-09-21 | 無線通信装置、無線通信方法及び集積回路 |
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JP5283674B2 JP5283674B2 (ja) | 2013-09-04 |
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JP2010210863A Active JP5283674B2 (ja) | 2008-01-04 | 2010-09-21 | 無線通信装置、無線通信方法及び集積回路 |
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US (8) | US8098759B2 (ja) |
EP (4) | EP2228933B1 (ja) |
JP (2) | JP4598149B2 (ja) |
KR (1) | KR101531413B1 (ja) |
CN (3) | CN104468046B (ja) |
AU (1) | AU2008346019B2 (ja) |
BR (2) | BRPI0822232B1 (ja) |
ES (1) | ES2388121T3 (ja) |
RU (1) | RU2479133C2 (ja) |
WO (1) | WO2009087743A1 (ja) |
Cited By (1)
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JP2015512213A (ja) * | 2012-03-02 | 2015-04-23 | ▲ホア▼▲ウェイ▼技術有限公司 | 情報送信方法およびデバイス |
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