JP5513436B2 - 無線通信システムにおけるダウンリンク制御チャンネル信号化方法 - Google Patents
無線通信システムにおけるダウンリンク制御チャンネル信号化方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 29
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/208—Frequency-division multiple access [FDMA]
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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
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2615—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid frequency-time division multiple access [FDMA-TDMA]
Description
Access)及びUTRAネットワーク(UTRAN)仕様の長期間の発展(LTE)において、ダウンリンク・データ送信をスケジューリングする複数のアプローチが提案されている。特に時分割多重(TDM)法式及び周波数分割多重(FDM)法式とこれらの組み合わせとが、制御信号の分離及び結合符号化に加えて、提案されてきた。制御チャンネル信号のTDM又はFDM伝送において、ダウンリンク及びアップリンク配分用の制御情報は、ダウンリンク・フレームの最初の一つ又は二つのシンボルで伝送されるか、又は例えば0.5ms長の副フレームの長さに拡散され、他の値を介することも可能である。結合符号化されるダウンリンク及びアップリンク制御情報法において、全制御情報は、制御情報を搬送する副フレームに関連する。連続して隣接した副フレームの一副フレームにおける現在の配分の妥当性を示す、期間フィールドが提案されてきた。しかしこれら提案された方法の全ては、0.5msの副フレームに基づく制御データ伝送を対象にしており、0.5msの整数倍の伝送時間間隔(TTI)を対象にしている。
第二無線資源を配分することを備え、前記第一及び第二無線資源は、時間−周波数無線資源の共通するセットから配分される方法を含む。
きいほど多量の資源が配分される、個々のUEの需要に基づいて資源を配分することが可能な機構が必要とされる。UMTS(汎用携帯電話通信システム)の場合、TTIは、送信又は輸送ブロックが送信される時間の長さとして定義される。送信ブロック又は輸送ブロックは、単一のCRCにより保護される結合符号化されたデータのブロックから成る。この例において、TTIの別の定義が、制御チャンネル信号の単一の例により制御される。
01]は、副フレーム310,320及び340における時間−周波数資源が無線通信端末に配分されたということを意味すると解釈される。他の実施形態において、各ビットは、一つ以上の副フレームの資源が端末に割り当てられている又は配分されていることを示す。他の実施形態において、携帯ステーションへの無線資源の配分は、配分フィールドにおけるビットを事前にコード化することにより指定される。例えば端末は、ルックアップ表を参照して、フィールドにおけるビットの特定の組み合わせにより配分される無線資源を判定する。図5は二つの0.5msの副フレームから成る1msのTTIの実施例を示す。ユーザiには両副フレーム上の資源ブロックが配分され、ユーザjには1つの副フレーム上のみで資源ブロックが配分される。
以上の配分は存在しない。但し本開示における用語「フレーム」は、多重副フレームTTI構造を意味する。上記セットを数値化するには、2ビットのフィールドが必要である。資源配分に加えて、信号化されるべき他の2ビットの例は以下のとおりである。
全TTIに対して周波数ダイバーシティを可能にしているか又は不可能にしているかを示している。
Claims (7)
- 無線通信スケジューリングの構成要素における方法であって、
第一最小サイズの、少なくとも一つの時間−周波数資源ブロックを備える第一無線資源を配分することであって、前記第一無線資源の少なくとも一つの時間−周波数資源ブロックの期間は、少なくとも1つの副フレームの期間に対応する、前記第一無線資源を配分すること、
第二最小サイズの、少なくとも一つの時間−周波数資源ブロックを備える第二無線資源を配分することであって、前記第二無線資源の少なくとも一つの時間−周波数資源ブロックの期間は、少なくとも1つの副フレームの期間に対応し、前記第二最小サイズは、前記第一最小サイズと異なる、前記第二無線資源を配分すること、
を備え、
前記第一及び第二無線資源は、時間−周波数無線資源の共通するセットから配分され、少なくとも一つの副フレームを構成する通常の送信時間間隔中に、少なくとも一つの無線通信端末で利用するための前記第一と第二の無線資源が、配分され、
前記少なくとも1つの副フレームは、制御信号を含み、
前記制御信号は、無線通信端末毎に符号化されて送信され、符号化された制御信号は、前記無線通信端末によってブラインド復号化され、
前記送信時間間隔は、少なくとも二つの副フレームの連鎖を構成する、方法。 - 前記第一及び第二無線資源に、共通の無線通信端末を配分することを備える、請求項1に記載の方法。
- 前記第一及び第二無線資源に、異なる無線通信端末を配分することを備える、請求項1に記載の方法。
- 通常の送信時間間隔は、結合符号化データのブロックを備える輸送ブロックが送信される時間の長さとして定義される、請求項1に記載の方法。
- 前記結合符号化データは、共通の周期的冗長検査により保護される、請求項4に記載の方法。
- 前記送信時間間隔は、制御チャンネル信号の単一のインスタンスにより制御される送信期間に対応する、請求項1に記載の方法。
- 無線基地局を用いた直交周波数分割多重(OFDM)を用いて通信する無線通信端末における方法であって、
前記無線基地局から、無線フレームの第1の副フレームにおける制御チャンネル上の無線資源配分メッセージを受信することであって、前記無線フレームは、複数のOFDMシンボルを備える各副フレームを有する複数の副フレームを備え、前記無線資源配分メッセージは、1以上の副フレームに対して資源を配分し、前記資源は、第一最小サイズの、少なくとも一つの時間−周波数資源ブロックを備える第一無線資源と、第二最小サイズの、少なくとも一つの時間−周波数資源ブロックを備える第二無線資源とを含み、前記第一および第二最小サイズは、少なくとも1つの副フレームの期間に対応し、前記第二最小サイズは、前記第一最小サイズと異なる、前記受信することを備え、
前記制御チャンネルは、複数の資源配分フィールドを含み、各資源配分フィールドは、少なくとも1つの対応する副フレームに関連し、
前記無線資源配分メッセージは、前記第1の副フレーム以外の1以上の副フレームに無線資源を配分し、
通常の送信時間間隔中の少なくとも1つの副フレームは、前記無線資源配分メッセージを含み、
前記無線資源配分メッセージは、無線通信端末毎に符号化されて送信され、符号化された無線資源配分メッセージは、前記無線通信端末によってブラインド復号化され、
前記送信時間間隔は、少なくとも二つの副フレームの連鎖を構成する、方法。
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US11/466,720 US8400998B2 (en) | 2006-08-23 | 2006-08-23 | Downlink control channel signaling in wireless communication systems |
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US10939454B2 (en) | 2014-12-11 | 2021-03-02 | Qualcomm Incorporated | Prioritizing colliding transmissions in LTE and ultra-low latency LTE communications |
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WO2008024578A2 (en) | 2008-02-28 |
RU2689127C2 (ru) | 2019-05-24 |
WO2008024578A3 (en) | 2008-05-08 |
JP2011188513A (ja) | 2011-09-22 |
CN102523184A (zh) | 2012-06-27 |
US20130156002A1 (en) | 2013-06-20 |
RU2567215C2 (ru) | 2015-11-10 |
RU2015141880A3 (ja) | 2019-03-26 |
RU2438260C2 (ru) | 2011-12-27 |
CN102523184B (zh) | 2015-03-11 |
JP2008054319A (ja) | 2008-03-06 |
EP2062409A2 (en) | 2009-05-27 |
JP4839419B2 (ja) | 2011-12-21 |
RU2015141880A (ru) | 2017-04-06 |
US9271270B2 (en) | 2016-02-23 |
RU2009110200A (ru) | 2010-09-27 |
BRPI0715847A2 (pt) | 2013-07-23 |
BRPI0715847B1 (pt) | 2019-11-26 |
US8400998B2 (en) | 2013-03-19 |
US20080049690A1 (en) | 2008-02-28 |
KR20090073111A (ko) | 2009-07-02 |
CN101529837A (zh) | 2009-09-09 |
KR101094575B1 (ko) | 2011-12-19 |
RU2011124070A (ru) | 2012-12-20 |
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