JP5319115B2 - 無線通信システムでの複合型開ループ/閉ループ電力制御 - Google Patents
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- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
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- H04W28/00—Network traffic management; Network resource management
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
- H04W52/221—TPC being performed according to specific parameters taking into account previous information or commands using past power control commands
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- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
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- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- 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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- H04W72/00—Local resource management
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- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/08—Closed loop power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/10—Open loop power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
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Description
第2に、SNIR比較ループはNode-Bのようなネットワークに配置される。SNIR比較ループは受信SNIRメトリックにより駆動される。受信SNIRは、外部ループにより設定される対象SNIR値と比較される。比較結果は、UEにその送信電力を変更するようにシグナリングされるTPCコマンドのシグナリングをもたらす。TPCコマンドが送信電力の固定量だけの変化(アップ又はダウン)を示すように、バイナリのシグナリングが使用されてもよい。代替として、多レベルのTPCコマンドが使用されてもよい。
と、計算されたパスロスPopen(k)と、調整係数γSF及びβTFCと、任意選択でI(k)に基づく調整とを使用し、送信電力レベルを設定してもよい436。この送信電力レベルPTx(k)は、アップリンク402でユーザデータを送信する400アップリンク電力レベルを設定するために使用されてもよい。
Claims (21)
- 基地局と移動端末とを有する無線通信システムでの電力制御方法であって、
前記移動端末で、
前記基地局と前記移動端末との間の無線チャネルのパスロスを決定し、
一つのダウンリンク物理チャネルで、スケジューリングされたアップリンク送信リソースの割り当てと、前記基地局から前記移動端末に送信された送信電力制御(TPC)コマンドとを受信し、
干渉測定テーブルを有するシグナリングを受信し、
前記決定されたパスロスと前記TPCコマンドと前記干渉測定テーブルとに基づいて前記移動端末の送信電力レベルを設定し、
前記設定された送信電力レベルで、前記スケジューリングされたアップリンク送信リソースで信号を送信することを有する電力制御方法。 - 前記パスロスを決定することは、
前記受信したシグナリングで、シグナリングされた電力レベルを受信し、前記シグナリングは前記シグナリングされた電力レベルで前記基地局から送信され、
前記受信したシグナリングの電力レベルを測定することを有する請求項1に記載の電力制御方法。 - 前記パスロスを決定することは、前記シグナリングされた電力レベルと前記測定された電力レベルとの間の差を計算することを更に有する請求項2に記載の電力制御方法。
- 前記送信電力レベルを設定することは、調整係数に更に基づく請求項1ないし3のうちいずれか1項に記載の電力制御方法。
- 前記調整係数は、拡散率のパラメータを組み込む請求項4に記載の電力制御方法。
- 前記調整係数は、選択トランスポートフォーマットのパラメータを組み込む請求項4又は5に記載の電力制御方法。
- ステップインジケータのシーケンスを累積することを更に有し、
前記ステップインジケータのシーケンスは、受信したTPCコマンドの対応するシーケンスで提供される請求項1ないし6のうちいずれか1項に記載の電力制御方法。 - 前記送信電力レベルを設定することは、前記パスロスと前記累積されたステップインジケータのシーケンスとに基づく請求項7に記載の電力制御方法。
- 前記基地局はCDMA基地局を有し、
前記移動端末はユーザ装置を有する請求項1ないし8のうちいずれか1項に記載の電力制御方法。 - 基地局と移動端末とを有する無線通信システムでの電力制御方法であって、
前記基地局で、
前記移動端末から送信された信号を受信し、
前記受信信号のSNIRを測定し、
前記測定されたSNIRと対象SNIRとを比較し、
前記測定されたSNIRが前記対象SNIRより大きい場合に第1の値をステップインジケータに割り当て、前記測定されたSNIRが前記対象SNIRより小さい場合に第2の値をステップインジケータに割り当て、
一つのダウンリンク物理チャネルで、スケジューリングされたアップリンク送信リソースの割り当てと、前記移動端末への前記ステップインジケータを有する送信電力制御(TPC)コマンドとを送信し、
干渉測定テーブルを有するシグナリングを送信することを有する電力制御方法。 - 前記送信されたシグナリングは、シグナリングされた電力レベルを有し、前記シグナリングされた電力レベルで送信される請求項10に記載の電力制御方法。
- 前記送信されたシグナリングは、ブロードキャストチャネルで送信される請求項11に記載の電力制御方法。
- 前記送信されたシグナリングは、ビーコンチャネルで送信される請求項11又は12に記載の電力制御方法。
- 前記受信信号の誤りメトリックを決定し、
前記誤りメトリックに基づいて前記対象SNIRを更新することを更に有する請求項10ないし13のうちいずれか1項に記載の電力制御方法。 - 前記受信信号の干渉値を測定し、
干渉測定テーブルを更新するために前記測定された干渉値を使用することを更に有する請求項10ないし14のうちいずれか1項に記載の電力制御方法。 - 前記干渉測定テーブルとシグナリングされた電力レベルとを有するシグナリングを送信することを更に有し、
前記シグナリングは、前記シグナリングされた電力レベルで送信される請求項15に記載の電力制御方法。 - 前記基地局はCDMA基地局を有し、
前記移動端末はユーザ装置を有する請求項10ないし16のうちいずれか1項に記載の電力制御方法。 - 移動端末を有する装置であって、
一つのダウンリンク物理チャネルで、スケジューリングされたアップリンク送信リソースの割り当てと、基地局から送信された送信電力制御(TPC)コマンドとを受信するように動作可能であり、干渉測定テーブルを有する信号を受信し、受信信号の電力レベルを測定するように動作可能である受信機と、
前記受信機に結合され、前記基地局と前記移動端末との間の無線チャネルのパスロスを決定するように動作可能である計算ロジックと、
前記計算ロジックに結合され、前記決定されたパスロスと前記TPCコマンドと前記干渉測定テーブルとに基づいて送信電力レベルを設定するように動作可能である電力レベル設定ロジックと、
前記電力レベル設定ロジックに結合され、前記設定された送信電力レベルで、前記スケジューリングされたアップリンク送信リソースで信号を送信するように動作可能である送信機と
を有する装置。 - 前記電力レベル設定ロジックに結合された累積器を更に有し、
前記累積器は、
ステップインジケータを受け付けるように動作可能であり、前記受信したTPCコマンドが前記ステップインジケータを提供する入力と、
過去の累積値と前記ステップインジケータとを加算し、現在の累積値を生じるように動作可能である加算ロジックと、
前記現在の累積値を保持するように動作可能であるメモリと、
前記現在の累積値を提供するように動作可能である出力と
を有し、
前記送信電力レベルを設定するように動作可能である前記電力レベル設定ロジックは、前記パスロスと前記現在の累積値とに基づく請求項18に記載の装置。 - 基地局を有するシステムであって、
受信信号のSNIRを測定するように動作可能である受信機と、
前記受信機に結合され、前記測定されたSNIR用の入力と対象SNIR用の入力とを有し、前記測定されたSNIRが前記対象SNIRより大きい場合に第1の値をステップインジケータに割り当て、前記測定されたSNIRが前記対象SNIRより小さい場合に第2の値をステップインジケータに割り当てるように動作可能である比較ロジックと、
前記比較ロジックに結合され、前記ステップインジケータを有する送信電力制御(TPC)コマンドを生成するように動作可能であるコマンド生成ロジックと、
前記コマンド生成ロジックに結合され、一つのダウンリンク物理チャネルで、スケジューリングされたアップリンク送信リソースの割り当てと、移動端末への前記TPCコマンドとを送信するように動作可能である送信機と、
前記受信機に結合され、干渉を測定するように動作可能である測定ロジックと、
前記測定ロジックに結合され、前記測定された干渉を使用して干渉測定テーブルを更新するように動作可能である更新ロジックと
を有し、
前記送信機は、前記干渉測定テーブルとシグナリングされた電力レベルとを有するシグナリングを送信するように更に動作可能であるシステム。 - 前記受信機に結合され、前記受信信号の誤りメトリックを決定するように動作可能である誤りメトリックロジックと、
前記誤りメトリックロジックに結合され、前記対象SNIRを更新するように動作可能である更新ロジックと
を更に有する請求項20に記載のシステム。
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US10/917,968 US8897828B2 (en) | 2004-08-12 | 2004-08-12 | Power control in a wireless communication system |
PCT/EP2005/053931 WO2006015983A1 (en) | 2004-08-12 | 2005-08-10 | Combined open loop/closed loop power control in a wireless communication system |
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JP2011234218A Division JP5357949B2 (ja) | 2011-10-25 | 2011-10-25 | 無線通信システムでの複合型開ループ/閉ループ電力制御 |
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US (11) | US8897828B2 (ja) |
EP (2) | EP1779545B1 (ja) |
JP (1) | JP5319115B2 (ja) |
KR (5) | KR101261329B1 (ja) |
CN (5) | CN103813429B (ja) |
AT (2) | ATE535061T1 (ja) |
DE (1) | DE602005031400C5 (ja) |
ES (2) | ES2380909T3 (ja) |
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US8897828B2 (en) | 2004-08-12 | 2014-11-25 | Intellectual Ventures Holding 81 Llc | Power control in a wireless communication system |
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