JP5845545B2 - 協調マルチポイントシステムにおけるリンク適応 - Google Patents
協調マルチポイントシステムにおけるリンク適応 Download PDFInfo
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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
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Description
ここで、λiは、瞬時PDSCH負荷と、i番目ポイントによって送信されたCSI−RSリソースを用いてUEにおいて計算されるRSRP報告である
Claims (24)
- チャネル干渉モジュールであって、
ユーザー機器(UE)から、協調マルチポイント測定セット(CoMP測定セット)の協働ノードに関連付けられる基準信号受信電力情報(RSRP情報)を受信し、前記協働ノードは前記CoMP測定セットのサービングノードと協調して前記UEとの無線通信を促進し、
前記UEから、チャネル品質インジケータ(CQI)を受信し、
前記RSRP情報及び前記CQIに基づいて、調整されたCQIを判定する、チャネル干渉モジュールと、
前記調整されたCQIに基づいて、前記協働ノードまたは前記サービングノードに関連付けられる通信リンクの送信パラメータを適応する、リンク適応モジュールと、を備える、装置。 - 前記チャネル干渉モジュールは、
前記UEから、前記サービングノードのセクタのミュートされたリソースの測定信号電力を示す受信信号強度インジケータ(RSSI)を受信し、
前記RSSIにさらに基づいて、前記調整されたCQIを判定する、請求項1に記載の装置。 - 前記CQI及び前記通信リンクは、前記協働ノードに関連付けられる、請求項1または2に記載の装置。
- 前記協働ノードは、前記CoMP測定セットの第1の協働ノードであり、前記リンク適応モジュールは、別の調整されたCQIに基づいて、前記CoMP測定セットの第2の協働ノードに関連付けられる通信リンクの送信パラメータをさらに適応する、請求項3に記載の装置。
- 前記CQI及び前記通信リンクは、前記サービングノードに関連付けられる、請求項1から4のいずれか一項に記載の装置。
- 前記チャネル干渉モジュールは、無線リソース管理(RRM)メッセージの一部として、前記RSRP情報を受信する、請求項1から5のいずれか一項に記載の装置。
- 前記チャネル干渉モジュールは、
CoMP測定セットの複数のノードに対するRSRP情報を受信し、
前記複数のノードに対する物理ダウンリンク共有チャネル(PDSCH)の瞬時負荷を判定し、
受信されたRSRP情報及び瞬時負荷に基づいて、前記複数のノードの協働ノード干渉を判定する、請求項1から6のいずれか一項に記載の装置。 - 前記チャネル干渉モジュールは、
前記PDSCHにおける総干渉電力を判定し、
判定された総干渉電力及び協働ノード干渉電力に基づいて、補正係数を判定し、
前記CQI及び前記補正係数に基づいて、前記調整されたCQIを判定する、請求項7に記載の装置。 - 前記複数のノードは、前記サービングノードを除く前記CoMP測定セットの全てのノードを含む、請求項7または8に記載の装置。
- 前記チャネル干渉モジュールは、
前記CoMP測定セットのうちの1又は複数のスケジューラからスケジュール報告を受信し、
スケジュール報告に基づいて、前記瞬時負荷を判定し、
前記1又は複数のスケジューラは、前記複数のノードにそれぞれ配置された複数のスケジューラを備え、前記チャネル干渉モジュールは、
前記複数のノードとの1又は複数のバックホール接続を介して、前記複数のスケジューラからスケジュール報告を受信する、請求項7から9のいずれか一項に記載の装置。 - 前記調整されたCQIは、第1の調整されたCQIであり、前記CQIは、前記協働ノードに関連付けられる第1のCQIであり、前記チャネル干渉モジュールは、
前記UEから、前記サービングノードに関連付けられる第2のCQIを受信し、
前記RSRP情報及び前記第2のCQIに基づいて、第2の調整されたCQIを判定するようにさらに構成される、請求項1から10のいずれか一項に記載の装置。 - 前記チャネル干渉モジュールは、補正係数に基づいて、前記第1及び第2の調整されたCQIを判定する、請求項11に記載の装置。
- 前記サービングノードとして動作する基地局を備える、請求項1から12のいずれか一項に記載の装置。
- 請求項13に記載の装置と通信する端末であって、
チャネル測定モジュールであって、
協調マルチポイント測定セット(CoMP測定セット)の協働ノードによって送信されたチャネル状態情報基準信号(CSI−RS)を受信し、
前記CSI−RSに基づいて、前記協働ノードに対する基準信号受信電力測定(RSRP測定)を判定する、チャネル測定モジュールと、
無線リソース管理(RRM)測定報告の一部として、前記RSRP測定を前記CoMP測定セットのサービングノードにフィードバックする、フィードバックモジュールと、を備え、
前記サービングノードにより、前記RSRP測定を用いて調整されたCQIが判定され、前記調整されたCQIに基づいて前記協働ノードまたは前記サービングノードに関連付けられる通信リンクの送信パラメータが適応され、前記送信パラメータにより通信する、端末。 - CSI−RSは、第1のCSI−RSであり、前記チャネル測定モジュールは、
前記第1のCSI−RSに基づいて、第1のチャネル品質インジケータ(CQI)を判定し、
前記サービングノードによって送信された第2のCSI−RSを受信し、前記第2のCSI−RSに基づいて、第2のCQIを判定する、請求項14に記載の端末。 - 前記フィードバックモジュールは、前記第1及び第2のCQIを前記サービングノードに前記RSRP測定とは別にフィードバックする、請求項15に記載の端末。
- 前記CSI−RSは、物理ダウンリンク共有チャネル(PDSCH)のうちの1又は複数のリソース要素上で受信され、
前記協働ノードは、前記CoMP測定の第1のセクタに関連付けられ、
前記第1のセクタ以外の前記CoMP測定セットのセクタは、前記1又は複数のリソース要素に対応するミュートされたリソースを含む、請求項14から16のいずれか一項に記載の端末。 - 前記端末は、前記CoMP測定セットの第1のセクタ内に配置され、前記チャネル測定モジュールは、
前記第1のセクタにおいてミュートされる物理ダウンリンク共有チャネル(PDSCH)の1又は複数のリソース要素における受信信号強度を測定して、受信信号強度インジケータ(RSSI)を判定し、
前記フィードバックモジュールは、前記RSSIを前記サービングノードにフィードバックする、請求項14から17のいずれか一項に記載の端末。 - ユーザー機器を備える、請求項14から18のいずれか一項に記載の端末。
- 協調マルチポイント測定セット(CoMP測定セット)のうちの1又は複数の協働ノードに関連付けられる協働ノード干渉電力を判定することと、
物理ダウンリンク共有チャネル(PDSCH)における総干渉電力を判定することと、
前記協働ノード干渉電力及び前記総干渉電力に基づいて、補正係数を判定することと、
前記補正係数及び1又は複数の報告されたCQIに基づいて、1又は複数の調整されたチャネル品質インジケータ(CQI)を判定することと、
ユーザー機器から受信された基準信号受信電力報告(RSRP報告)に基づいて、協働ノード干渉電力を判定すること、を含み、
前記協働ノード干渉電力の判定は前記PDSCHの瞬時負荷に基づく、方法。 - 1又は複数のスケジューラからのスケジュール報告に基づいて、前記PDSCHの瞬時負荷を判定すること、をさらに含む、請求項20に記載の方法。
- 前記1又は複数のCQIは、前記CoMP測定セットのサービングノードに関連付けられる第1のCQI及び前記CoMP測定セットの協働ノードに関連付けられる第2のCQIを含む、請求項20または21に記載の方法。
- 実行されたときに、デバイスに請求項20から22のいずれか一項に記載の方法を実施させる命令を有するプログラム。
- 請求項20から22のいずれか一項に記載の方法を実施するように構成される、基地局。
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