JP2005167502A - 無線通信システム、送信無線局の制御装置及び受信無線局の制御装置、並びにサブキャリア選択方法 - Google Patents
無線通信システム、送信無線局の制御装置及び受信無線局の制御装置、並びにサブキャリア選択方法 Download PDFInfo
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Abstract
【解決手段】 受信無線局は、受信無線局に割当られた周波数帯域を、被干渉量測定を行う周波数帯域毎に細分化し、細分化された周波数帯域幅毎に、受信信号の被干渉量を測定し、被干渉量に基づいて、利用可能なサブキャリアを決定する。
【選択図】 図3
Description
R. Lassalle and M. Alard, "Principle of modulation and channel coding for digital broadcasting for mobile receivers, "EBU Review, No.224, August 1987 Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications; High Speed Physical Layer (PHY) in the 5 GHz Band, IEEE Stdl802.11a, 1999 H.Yoshino, K.Fukawa and H.Suzuki, "Interference Canceling Equalizer(ICE) for Mobile Radio Communication, " IEEE Trans. Veh. Technol., Vol.46, No.4, pp.849−861, November 1997
2 受信無線局
Claims (10)
- 他の無線通信システムとサブキャリアの一部を重複して利用し、送信無線局と受信無線局とが複数のサブキャリアを用いて信号伝送を行うマルチキャリア伝送方式を用いる無線通信システムにおいて、
前記受信無線局は、
前記無線通信システムに割当られた周波数帯域を、被干渉量測定を行う周波数帯域毎に細分化する被干渉量測定用周波数帯域指定手段と、
細分化された周波数帯域毎に、受信信号の被干渉量を測定する被干渉量測定手段と、
前記被干渉量に基づいて、利用可能なサブキャリアを決定する利用可能サブキャリア決定手段と
を備え、
前記送信無線局は、
前記利用可能なサブキャリアに基づいて、送信するマルチキャリア信号に用いる送信サブキャリアを決定する送信サブキャリア制御手段を備える
ことを特徴とする無線通信システム。 - 送信無線局から複数のサブキャリアを用いて送信された信号を受信する受信無線局の制御装置であって、
当該受信無線局に割当られた周波数帯域を、被干渉量測定を行う周波数帯域毎に細分化する被干渉量測定用周波数帯域指定手段と、
細分化された周波数帯域毎に、受信信号の被干渉量を測定する被干渉量測定手段と、
前記被干渉量に基づいて、利用可能なサブキャリアを決定する利用可能サブキャリア決定手段と
を備えることを特徴とする受信無線局の制御装置。 - 請求項2に記載の受信無線局の制御装置において、
前記受信信号から前記被干渉信号を除去する干渉信号除去手段を備え、
前記被干渉量測定手段は、前記干渉信号除去手段の出力と希望信号との差を被干渉量として測定することを特徴とする受信無線局の制御装置。 - 他の無線通信システムとサブキャリアの一部を重複して利用し、受信無線局に複数のサブキャリアを用いて信号伝送を行うマルチキャリア伝送方式における送信無線局の制御装置であって、
前記受信無線局から送信された利用可能サブキャリア情報に基づいて、前記送信無線局が送信するマルチキャリア信号に用いる送信サブキャリアを決定する送信サブキャリア制御手段を備えることを特徴とする送信無線局の制御装置。 - 請求項4に記載の送信無線局の制御装置において、
前記他の無線通信システムにおける周波数帯域の利用状況を検出するための利用可能サブキャリア通知要求を送信する利用可能サブキャリア通知要求手段と、
前記利用可能サブキャリア通知要求の応答信号である利用可能サブキャリア通知応答を受信する利用可能サブキャリア通知応答受信手段と
を備え、
前記送信サブキャリア制御手段は、前記利用サブキャリア通知応答に基づいて、利用可能なサブキャリアを決定することを特徴とする送信無線局の制御装置。 - 請求項4または5に記載の送信無線局の制御装置において、
前記受信無線局から送信された送信信号に対する要求サービス品質を示すQOS情報を受信するQOS情報受信手段と、
前記QOSを満たすために必要な信号処理パラメータを決定する信号処理パラメータ制御手段と
を備え、
前記送信サブキャリア制御手段は、前記QOSに基づいて、送信するマルチキャリア信号に用いるサブキャリアを決定することを特徴とする送信無線局の制御装置。 - 送信無線局から複数のサブキャリアを用いて送信された信号を受信する受信無線局におけるサブキャリア選択方法であって、
当該受信無線局に割当られた周波数帯域を、被干渉量測定を行う周波数帯域毎に細分化するステップと、
細分化された周波数帯域毎に、受信信号の被干渉量を測定するステップと、
前記被干渉量に基づいて、利用可能なサブキャリアを決定するステップと
を有することを特徴とする受信無線局におけるサブキャリア選択方法。 - 他の無線通信システムとサブキャリアの一部を重複して利用し、受信無線局に複数のサブキャリアを用いて信号伝送を行うマルチキャリア伝送方式における送信無線局のサブキャリア選択方法であって、
前記受信無線局から送信された利用可能サブキャリア情報に基づいて、前記送信無線局が送信するマルチキャリア信号に用いる送信サブキャリアを決定するステップを有することを特徴とする送信無線局のサブキャリア選択方法。 - 請求項8に記載の送信無線局のサブキャリア選択方法において、
前記他の無線通信システムにおける周波数帯域の利用状況を検出するための利用可能サブキャリア通知要求を送信するステップと、
前記利用可能サブキャリア通知要求の応答信号である利用可能サブキャリア通知応答を受信するステップと、
前記利用サブキャリア通知応答に基づいて、利用可能なサブキャリアを決定するステップと
を有することを特徴とする送信無線局のサブキャリア選択方法。 - 請求項9に記載の送信無線局のサブキャリア選択方法において、
前記受信無線局から送信された送信信号に対する要求サービス品質を示すQOS情報を受信するステップと、
前記QOS情報に基づいて、送信するマルチキャリア信号に用いるサブキャリアを決定するステップと
を有することを特徴とする送信無線局のサブキャリア選択方法。
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