JP5391232B2 - 無線通信方法、無線通信システム及び基地局装置 - Google Patents
無線通信方法、無線通信システム及び基地局装置 Download PDFInfo
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- H04L5/00—Arrangements affording multiple use of the transmission path
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0055—ZCZ [zero correlation zone]
- H04J13/0059—CAZAC [constant-amplitude and zero auto-correlation]
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- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H04L27/00—Modulated-carrier systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0016—Time-frequency-code
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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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 (10)
- 無線通信方法であって、
第1の移動局装置が、
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信号を拡散し、
拡散された前記ACK、NACK信号を、スロットを用いて送信し、
第2の移動局装置が、
CQI信号を送信する際に、前記スロット内の第N番目のシンボルと第M番目のシンボルに、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、
配置された前記参照信号を前記スロットにて送信し、
基地局装置が、
前記スロットにて、前記ACK、NACK信号および前記参照信号を受信する無線通信方法。 - 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記載の無線通信方法。
- 前記第2の移動局装置は、前記基地局装置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記載の無線通信方法。
- 第1の移動局装置と、第2の移動局装置と、基地局装置とを含む無線通信システムであって、
第1の移動局装置は、
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信号を拡散する拡散部と、
拡散された前記ACK、NACK信号を、スロットを用いて送信する送信部と、を有し、
第2の移動局装置は、
CQI信号を送信する際に、前記スロット内の第N番目のシンボルと第M番目のシンボルに、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する配置部と、
配置された前記参照信号を前記スロットにて送信する送信部と、を有し、
基地局装置が、
前記スロットにて、前記ACK、NACK信号および前記参照信号を受信する、
無線通信システム。 - 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4記載の無線通信システム。
- 前記第2の移動局装置は、前記基地局装置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4記載の無線通信システム。
- 基地局装置であって、
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の一つの直交系列、及び、第1の巡回シフト値によって定義される系列とを用いて、第1の移動局装置が拡散し、送信したACK、NACK信号を受信し、
第2の移動局装置が、CQI信号を送信する際に、スロット内の第N番目のシンボルと第M番目のシンボルに、参照信号として配置し、送信した、第2の巡回シフト値によって定義される参照信号系列に相互に逆相となる値が乗算された系列を、受信する受信部と、
前記一つの直交系列および前記第1の巡回シフト値によって定義される系列を用いて前記ACK、NACK信号を逆拡散し、前記第2の巡回シフト値によって定義される系列を用いて前記参照信号を逆拡散する逆拡散部と、
を有する基地局装置。 - 前記第1の移動局装置から送信される前記ACK、NACK信号と、前記第2の移動局装置から送信される前記参照信号とを同じスロットにて受信することを特徴とする請求項7記載の基地局装置。
- 無線通信方法であって、
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の一つの直交系列、及び、第1の巡回シフト値によって定義される系列とを用いて、第1の移動局装置が拡散し、送信したACK、NACK信号を受信し、
第2の移動局装置が、CQI信号を送信する際に、スロット内の第N番目のシンボルと第M番目のシンボルに、参照信号として配置し、送信した、参照信号系列に相互に逆相となる値が乗算された、第2の巡回シフト値によって定義される系列を受信し、
前記一つの直交系列および前記第1の巡回シフト値によって定義される系列を用いて前記ACK、NACK信号を逆拡散し、前記第2の巡回シフト値によって定義される系列を用いて前記参照信号を逆拡散する、
無線通信方法。 - 前記第1の移動局装置から送信される前記ACK、NACK信号と、前記第2の移動局装置から送信される前記参照信号とを同じスロットにて受信することを特徴とする請求項9記載の無線通信方法。
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