JP6703083B2 - 端末及び無線通信方法 - Google Patents
端末及び無線通信方法 Download PDFInfo
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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
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
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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
-
- 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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
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- 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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1861—Physical mapping arrangements
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- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
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- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
- H04W52/545—Signalisation aspects of the TPC commands, e.g. frame structure modifying TPC bits in special situations
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- Computer Networks & Wireless Communication (AREA)
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Description
第1の態様では、所定のDLアサイメントに含まれるカウンタDAIのビット数を所定値(例えば、3ビット)以上とする場合について説明する。また、カウンタDAIのビット数を所定条件に基づいて異なる値に設定する場合について説明する。
複数のDLアサイメントに対して異なるビット数のカウンタDAIが設定される場合、ユーザ端末が複数のDLアサイメントを受信すると異なるビット数(0を含む)のカウンタDAIを受信する可能性がある。かかる場合、ユーザ端末がどのようにDAIを解釈してHARQ−ACKフィードバック等を制御するかが問題となる。
上述したように、FDDにおいて共通サーチスペースを介してユーザ端末が受信するDLアサイメントには、カウンタDAIが含まれない構成となることが想定される。このため、無線基地局が共通サーチスペースのDLアサイメントでプライマリセル(PCell)のPDSCHのスケジューリングを行う場合、ユーザ端末はカウンタDAIが含まれないDLアサイメントを検出することとなる。
上述したように、TDDでは、少なくとも共通サーチスペースで送信されるDLアサイメント/ULグラントには、2ビットのカウンタDAIが含まれた構成となることが想定される。このため、無線基地局が共通サーチスペースのDLアサイメント/ULグラントでプライマリセル(PCell)のPDSCH/PUSCHのスケジューリングを行う場合、ユーザ端末は2ビットのDAIを含むDLアサイメント/ULグラントを検出することとなる。
第3の態様では、ユーザ端末がHARQ−ACK送信に適用する上り制御チャネルフォーマット(PUCCHフォーマット)の選択方法について説明する。
以下、本発明の一実施形態に係る無線通信システムの構成について説明する。この無線通信システムでは、上記各態様に係る無線通信方法が適用される。なお、上記各態様に係る無線通信方法は、それぞれ単独で適用されてもよいし、組み合わせて適用されてもよい。
図9は、本発明の一実施形態に係る無線基地局の全体構成の一例を示す図である。無線基地局10は、複数の送受信アンテナ101と、アンプ部102と、送受信部103と、ベースバンド信号処理部104と、呼処理部105と、伝送路インターフェース106とを備えている。なお、送受信部103は、送信部及び受信部で構成される。
図11は、本発明の一実施形態に係るに係るユーザ端末の全体構成の一例を示す図である。ユーザ端末20は、MIMO伝送のための複数の送受信アンテナ201と、アンプ部202と、送受信部203と、ベースバンド信号処理部204と、アプリケーション部205と、を備えている。なお、送受信部203は、送信部及び受信部から構成されてもよい。
なお、上記実施形態の説明に用いたブロック図は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及び/又はソフトウェアの任意の組み合わせによって実現される。また、各機能ブロックの実現手段は特に限定されない。すなわち、各機能ブロックは、物理的に結合した1つの装置により実現されてもよいし、物理的に分離した2つ以上の装置を有線又は無線で接続し、これら複数の装置により実現されてもよい。
Claims (2)
- 複数のセルにおいて送信されるDL信号を受信する受信部と、
上り制御チャネルリソースに関するテーブル情報と下り制御情報に含まれるリソースインジケータ値とを用いて、前記DL信号に対するHARQ−ACKの送信に用いる上り制御チャネルリソースを決める制御部と、を具備し、
前記テーブル情報は、
複数のリソースインジケータ値に対して上り制御チャネルリソースが関連付けられていて、
前記各リソースインジケータ値は上り制御チャネルリソースと上り制御チャネルフォーマットとの組み合わせが複数組対応付けられ、
同じリソースリソースインジケータ値が対応付けられた前記複数組の組み合わせには異なる上り制御チャネルフォーマットが設定されることを特徴とする端末。 - 端末が複数のセルにおいて送信されるDL信号を受信する工程と、
前記端末が上り制御チャネルリソースに関するテーブル情報と下り制御情報に含まれるリソースインジケータ値とを用いて、前記DL信号に対するHARQ−ACKの送信に用いる上り制御チャネルリソースを決める工程と、を具備し、
前記テーブル情報は、
複数のリソースインジケータ値に対して上り制御チャネルリソースが関連付けられていて、
前記各リソースインジケータ値は上り制御チャネルリソースと上り制御チャネルフォーマットとの組み合わせが複数組対応付けられ、
同じリソースリソースインジケータ値が対応付けられた前記複数組の組み合わせには異なる上り制御チャネルフォーマットが設定されることを特徴とする無線通信方法。
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JP2017548785A Division JP6467066B2 (ja) | 2015-11-05 | 2016-11-02 | ユーザ端末 |
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JP2018220817A Active JP6703083B2 (ja) | 2015-11-05 | 2018-11-27 | 端末及び無線通信方法 |
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EP (3) | EP3364582A4 (ja) |
JP (2) | JP6467066B2 (ja) |
CN (1) | CN108353312B (ja) |
MX (1) | MX2018005526A (ja) |
WO (1) | WO2017078033A1 (ja) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11463195B2 (en) * | 2019-04-19 | 2022-10-04 | Qualcomm Incorporated | Handling downlink assignment indicators for different types of downlink control information |
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EP3364582A1 (en) | 2018-08-22 |
WO2017078033A1 (ja) | 2017-05-11 |
CN108353312B (zh) | 2021-08-24 |
EP3364582A4 (en) | 2018-08-22 |
EP3654562A1 (en) | 2020-05-20 |
JP6467066B2 (ja) | 2019-02-06 |
JPWO2017078033A1 (ja) | 2018-09-20 |
JP2019050619A (ja) | 2019-03-28 |
MX2018005526A (es) | 2018-08-01 |
US20180323938A1 (en) | 2018-11-08 |
EP3503446A1 (en) | 2019-06-26 |
US10841066B2 (en) | 2020-11-17 |
CN108353312A (zh) | 2018-07-31 |
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