JP2010528500A - パケット・ワイヤレス遠距離通信のための方法および装置 - Google Patents
パケット・ワイヤレス遠距離通信のための方法および装置 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 57
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 2
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 241000760358 Enodes Species 0.000 description 1
- 108010003272 Hyaluronate lyase Proteins 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
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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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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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
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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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
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
(216+18+16)×3=750ビット (1)
である。QPSK変調については、利用可能なシンボルの数は20msecあたり332シンボルである。したがって、符号化された音声フレームの1つの送信のために3つのサブ・フレームが必要であり、1送信あたり1.5msかかる。TTIの長さは、1.5msであると仮定される。
1.5ms[キューイング遅延]+(9×3+1.5)ms[送信/再送信]
+ACK/NACK遅延=30ms+ACK/NACK遅延 (2)
Claims (16)
- パケット・ワイヤレス遠距離通信ネットワークを介してデータを送信する方法であって、データを符号化するためにコード分割多重アクセス(CDMA)方式をデータに適用するステップと、前記符号化されたデータを、循環プレフィックス(CP)を含む直交周波数分割多重方式(OFDM)のフレーム構造で送信するステップとを含む方法。
- CDMA方式として前記データを符号化するために、定振幅ゼロ自己相関(CAZAC)系列によるスクランブリングが後に続くブロック反復を含む、請求項1に記載の方法。
- 類似する電波伝播条件のユーザは1つのグループに置かれ、直交CAZAC系列を割り当てられ、そして、異なるグループには異なる基本CAZAC系列が割り当てられる、請求項2に記載の方法。
- 送信の前に、前記CDMA変調データは、副搬送波に拡散するために離散フーリ変換(DFT)に適用される、請求項1乃至3のいずれか1項に記載の方法。
- 前記CPは前記DFTの後に挿入される、請求項4に記載の方法。
- CDMAおよび単一搬送波周波数分割多重アクセス(SC−FDMA)送信を時間多重化するステップを含む、請求項1乃至5のいずれか1項に記載の方法。
- 前記CDMA符号化データは音声データであり、前記SC−FDMA送信は、前記CDMA符号化パケットよりも大きなペイロードを有するデータ・パケットである、請求項6に記載の方法。
- どの方式の送信データが送信されるべきかを識別するために、ハイブリッド自動再送要求(HARQ)プロセスIDが使用される、請求項6または7に記載の方法。
- パケット・ワイヤレス遠距離通信ネットワークを介してデータを送信する方法であって、ユーザ端末と基地局との間のアップリンクで、より大きなペイロードのデータ・パケットのためにはスケジュールされた送信を使用し、より小さなペイロードのデータ・パケットのためには自律的送信を使用するステップを含む方法。
- 前記より小さなペイロードのデータ・パケットは音声データを運搬し、前記より大きなペイロードのデータ・パケットは非音声データを運搬する、請求項9に記載の方法。
- ダウンリンクではOFDMを使用し、アップリンクでは、より小さなペイロードのデータ・パケットのためのCDMA送信と、より大きなペイロードのデータ・パケットのためのSC−FDMA送信とを時間多重化するステップを含む、請求項1乃至10のいずれか1項に記載の方法。
- 基地局と複数のユーザ端末とを含む、データ・パケットを送信するワイヤレス遠距離通信ネットワークであって、CDMA方式を使用してデータを符号化するエンコーダを有し、CPを含むOFDMフレーム構造の中で前記符号化されたデータを送信するように配置されたトランスミッタを含むネットワーク。
- アップリンクでSC−FDMA送信とCDMA送信とを時間多重化するマルチプレクサを備える、請求項12に記載のネットワーク。
- CDMA方式を使用してデータを符号化するエンコーダを含み、CPを含むOFDMフレーム構造の中で前記符号化されたデータを送信するように配置された、ワイヤレス遠距離通信配置のためのトランスミッタ。
- CPを含むOFDMフレーム構造の中で送信された、CDMA方式を使用して符号化されている受信データを復号するレシーバ・プロセッサを含む、ワイヤレス遠距離通信配置のためのレシーバ。
- 逐次干渉除去(SIC)レシーバ・プロセッサを備える、請求項15に記載のレシーバ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/796,853 US8259695B2 (en) | 2007-04-30 | 2007-04-30 | Method and apparatus for packet wireless telecommunications |
US11/796,853 | 2007-04-30 | ||
PCT/US2008/005337 WO2008133981A1 (en) | 2007-04-30 | 2008-04-25 | Method and apparatus for s ingle- carrier fdma based packet wireless telecommunications |
Publications (2)
Publication Number | Publication Date |
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JP2010528500A true JP2010528500A (ja) | 2010-08-19 |
JP5450389B2 JP5450389B2 (ja) | 2014-03-26 |
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JP2010506274A Active JP5450389B2 (ja) | 2007-04-30 | 2008-04-25 | パケット・ワイヤレス遠距離通信のための方法および装置 |
Country Status (6)
Country | Link |
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US (1) | US8259695B2 (ja) |
EP (1) | EP2153570A1 (ja) |
JP (1) | JP5450389B2 (ja) |
KR (1) | KR20100015865A (ja) |
CN (1) | CN101675620B (ja) |
WO (1) | WO2008133981A1 (ja) |
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Also Published As
Publication number | Publication date |
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KR20100015865A (ko) | 2010-02-12 |
EP2153570A1 (en) | 2010-02-17 |
WO2008133981A1 (en) | 2008-11-06 |
CN101675620A (zh) | 2010-03-17 |
JP5450389B2 (ja) | 2014-03-26 |
US8259695B2 (en) | 2012-09-04 |
CN101675620B (zh) | 2013-07-24 |
US20080267157A1 (en) | 2008-10-30 |
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