JP5031782B2 - 通信システムにおける自動ユーザー端末送信電力制御 - Google Patents
通信システムにおける自動ユーザー端末送信電力制御 Download PDFInfo
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- H—ELECTRICITY
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- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- 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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- 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
- H04L5/0057—Physical resource allocation for CQI
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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
- H04W52/38—TPC being performed in particular situations
- H04W52/48—TPC being performed in particular situations during retransmission after error or non-acknowledgment
-
- 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
- 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
- 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
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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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
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
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Description
の伝送シンボルをさらに含み、各伝送シンボル130は、チャンネル伝播効果(channel propagation effect)による干渉を軽減するためのCP(Cyclic Prefix)をさらに含む。2個のスロットのPUSCH伝送は、動作帯域幅(BandWidth:BW)での同一の部分で、あるいは2個の異なる部分で行われることができる。RS(Reference Signal)は、各スロット140の中間(middle)に位置した伝送シンボルで、かつ、データ信号と同一の帯域幅で伝送される。このRSは、主に、UCI又はデータ信号(DM RS)のコヒーレント復調(coherent demodulation)を可能にするチャンネル推定を提供するために使用される。PUSCH伝送BWは、リソースブロック(Resouce Block:RB)と呼ばれる周波数リソースユニットを含む。典型的な実施形態では、それぞれのRBは
のリソース要素(Resource Element:RE)または副搬送波を含み、UEには、PUSCH伝送のためのMPUSCH個の連続したRB150が割り当てられる。
として計算される。ここで、Kは定数を、TBSはTBのサイズを、及び
は、DM RS伝送に使用される、REを除いたサブフレーム当りのREの個数(図1に例示された構成では、DM RS伝送に、スロット当り一個の伝送シンボルが使用される)を、それぞれ表す。したがって、PUSCH送信電力は、UCI又はSRSの存在有無に関係なしに、非適応的HARQ再伝送で同一に維持される。
Claims (14)
- ユーザー端末で、リソース要素(Resource Element:RE)のセットを通じて伝送されたデータ信号の電力レベルを調整する方法であって、
データ信号を伝送するために使用される周波数−時間リソースのサイズによって前記データ信号の電力レベルを調整するステップと、
前記データ信号が伝送シンボル内の複数の周波数リソースユニットで構成される第1のREセットを通じて伝送されるとき、前記データ信号を第1の電力レベルで伝送するステップと、
前記データ信号が前記伝送シンボル内の複数の周波数リソースユニットで構成される第2のREセットを通じて伝送されるとき、前記データ信号を第2の電力レベルで伝送するステップと、を有し、
前記第2の電力レベルは前記第1の電力レベルより高く、前記第2のREセットは前記第1のREセットのサブセットであることを特徴とする方法。 - 前記第1のREセットを通じて伝送されるデータ信号は、第1のデータMCSを用いて伝送され、前記第2のREセットを通じて伝送されるデータ信号は、第2のデータMCSを用いて伝送され、前記第2のデータMCSは、前記第1のデータMCSより高いスペクトル効率を有することを特徴とする請求項1に記載の方法。
- 前記データ信号が前記第2のREセットを通じて伝送されるとき、制御信号を、前記第1のREセットに含まれ、前記第2のREセットには含まれないREで伝送するステップをさらに含むことを特徴とする請求項1に記載の方法。
- 前記制御信号は、肯定応答信号、チャンネル品質インジケータ信号、プリコーディングマトリクスインジケータ信号、及びランクインジケータ信号のうち少なくとも一つを含むことを特徴とする請求項3に記載の方法。
- 前記制御信号はサウンディング基準信号であることを特徴とする請求項3に記載の方法。
- 前記第1の電力レベルは前記第1のREセットのサイズに基づき、前記第2の電力レベルは前記第2のREセットのサイズに基づくことを特徴とする請求項1に記載の方法。
- 前記データ信号は、
前記第1のREセットを通じて伝送されるとき、HARQ初期伝送とそれに関連したHARQ再伝送のうちいずれか一つを含み、
前記第2のREセットを通じて伝送されるとき、HARQ初期伝送とそれに関連したHARQ再伝送のうち他の一つを含むことを特徴とする請求項1に記載の方法。 - ユーザー端末で、REセットを通じて伝送されたデータ信号の電力レベルを調整する装置であって、
データ信号を伝送するための電力を提供する増幅部と、
前記データ信号を伝送するために使用される周波数−時間リソースのサイズによって前記データ信号の電力レベルを調整し、前記データ信号を伝送シンボル内の複数の周波数リソースユニットで構成される第1のREセットを通じて伝送するために、第1の電力レベルを前記増幅部に適用し、前記データ信号を前記伝送シンボル内の複数の周波数リソースユニットで構成される第2のREセットを通じて伝送するために、第2の電力レベルを前記増幅部に適用する電力制御部と、を含み、
前記第2の電力レベルは前記第1の電力レベルより高く、前記第2のREセットは前記第1のREセットのサブセットであることを特徴とする装置。 - 前記第1のREセットを通じて伝送されるデータ信号は、第1のデータMCSを用いて伝送され、前記第2のREセットを通じて伝送されるデータ信号は、第2のデータMCSを用いて伝送され、前記第2のデータMCSは、前記第1のデータMCSより高いスペクトル効率を有することを特徴とする請求項8に記載の装置。
- 前記データ信号が前記第2のREセットを通じて伝送されるとき、制御信号が、前記第1のREセットに含まれ、前記第2のREセットには含まれないREで伝送されることを特徴とする請求項8に記載の装置。
- 前記制御信号は、肯定応答信号、チャンネル品質インジケータ信号、プリコーディングマトリクスインジケータ信号、及びランクインジケータ信号のうち少なくとも一つであることを特徴とする請求項10に記載の装置。
- 前記制御信号はサウンディング基準信号であることを特徴とする請求項10に記載の装置。
- 前記第1の電力レベルは前記第1のREセットのサイズに基づき、前記第2の電力レベルは前記第2のREセットのサイズに基づくことを特徴とする請求項8に記載の装置。
- 前記データ信号は、
前記第1のREセットを通じて伝送されるとき、HARQ初期伝送とそれに関連したHARQ再伝送のうちいずれか一つを含み、
前記第2のREセットを通じて伝送されるとき、HARQ初期伝送とそれに関連したHARQ再伝送のうち他の一つを含むことを特徴とする請求項8に記載の装置。
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JP2009023892A Active JP4927110B2 (ja) | 2008-02-04 | 2009-02-04 | 通信システムにおける制御及びデータ多重化 |
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EP (3) | EP2086267B1 (ja) |
JP (3) | JP5031782B2 (ja) |
KR (2) | KR101554742B1 (ja) |
CN (3) | CN101511121B (ja) |
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