JP5048841B2 - 物理的ダウンリンク制御チャネルのモニタリングのための無線通信システム - Google Patents
物理的ダウンリンク制御チャネルのモニタリングのための無線通信システム Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
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- 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
- H04L1/0029—Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling
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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
- H04L1/0032—Without explicit signalling
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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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection 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
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2666—Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
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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) or DMT
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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
- H04L5/0037—Inter-user or inter-terminal allocation
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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 signalling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70718—Particular systems or standards
- H04B2201/70724—UMTS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2211/00—Orthogonal indexing scheme relating to orthogonal multiplex systems
- H04J2211/003—Orthogonal indexing scheme relating to orthogonal multiplex systems within particular systems or standards
- H04J2211/005—Long term evolution [LTE]
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Description
本発明は、例えば、以下も提供する。
(項目1)
通信システムにおけるPDCCH(physical downlink control channel)をモニタリングする方法において、
サブフレームの検索空間でPDCCH候補の集合をモニタリングする段階を含み、
前記サブフレームは、制御情報伝送のための制御領域(control region)を含み、前記制御領域は、複数のCCE(control channel element)にマッピングされる複数のリソースエレメント(resource element)を含み、CCEは、リソースエレメントの集合に対応されて、隣接するCCE集合を含む前記検索空間は、共用(common)検索空間及び端末特定(UE−specific)検索空間に分類され、前記共用検索空間は、セル内の全ての端末によってモニタリングされ、前記端末特定検索空間は、前記セル内の少なくとも1つ以上の端末によってモニタリングされることを特徴とする方法。
(項目2)
前記検索空間における前記PDCCH候補の位置は、K個(ここで、Kは、CCE集団レベルの大きさ)のCCE毎に生じることを特徴とする項目1に記載の方法。
(項目3)
前記検索空間の大きさは、前記CCE集団レベルの大きさ及び前記検索空間における前記PDCCH候補の数によって定義されることを特徴とする項目2に記載の方法。
(項目4)
前記共用検索空間のためのCCE集団レベルの個数は、前記端末特定検索空間のためのCCE集団レベルの個数より小さいことを特徴とする項目2に記載の方法。
(項目5)
前記共用検索空間の開始位置は、前記セル内の全ての前記端末に同じであることを特徴とする項目1に記載の方法。
(項目6)
前記共用検索空間の前記開始位置は、固定されることを特徴とする項目5に記載の方法。
(項目7)
前記端末特定検索空間の開始位置は、サブフレーム毎に決定されることを特徴とする項目1に記載の方法。
(項目8)
共用制御情報を検索する開始位置は、前記共用検索空間内に制限されることを特徴とする項目1に記載の方法。
(項目9)
1番目の共用制御情報を検索するための開始位置及び2番目の共用制御情報を検索するための開始位置が前記共用検索空間内に制限されることを特徴とする項目8に記載の方法。
(項目10)
前記1番目の共用制御情報を検索するための前記開始位置は、前記2番目の共用制御情報を検索するための前記開始位置と異なることを特徴とする項目9に記載の方法。
(項目11)
PDCCH(physical downlink control channel)をモニタリングする端末において:
無線信号を受信するRF(radio frequency)部;及び
前記RF部と連結されるプロセッサを含み;
前記プロセッサは、サブフレームで各々の共用CCE(control channel element)集団レベルに対して共用検索空間をモニタリングし、前記サブフレームは、制御情報を伝送する制御領域(control region)を含み、前記制御領域は、複数のCCE(control channel element)にマッピングされる複数のリソースエレメント(resource element)を含み、CCEは、リソースエレメントの集合に対応され、前記共用検索空間は、セル内の全ての端末によってモニタリングされる隣接するCCE集合を含み、
前記サブフレームで各々の端末特定CCE集団レベルに対して端末特定検索空間をモニタリングし、前記端末特定検索空間は、前記セル内の少なくとも1つ以上の端末によってモニタリングされる端末。
(項目12)
前記共用検索空間の開始位置は、前記セル内の全ての端末に同じであることを特徴とする項目11に記載の端末。
(項目13)
前記端末特定検索空間の開始位置は、前記セル内で端末特定的であることを特徴とする項目11に記載の端末。
(項目14)
無線通信システムにおけるPDCCH(physical downlink control channel)上に制御情報を伝送する方法において、
セル内の全ての端末によってモニタリングされる共用検索空間で前記PDCCH上に共用制御情報を設定して;及び
前記PDCCH上に前記共用制御情報を伝送することを含む方法。
(項目15)
端末特定制御情報を受信する少なくとも1つ以上の端末によってモニタリングされる端末特定検索空間で前記PDCCH上に前記端末特定制御情報を伝送することをさらに含む項目14に記載の方法。
Claims (10)
- 無線通信システムにおけるPDCCH(physical downlink control channel)をモニタリングする方法であって、
前記方法は、サブフレームkの検索空間のためのPDCCH候補の集合をモニタリングすることを含み、
前記サブフレームは、制御情報を伝送するための制御領域を含み、前記制御領域は、複数のCCE(control channel element)にマッピングされる複数のリソースエレメントを含み、CCEは、リソースエレメントの集合に対応し、前記検索空間は、連続的なCCEの集団を示す各集団レベルにおけるPDCCHの集合により定義され、隣接するCCEの集合を含む前記検索空間は、共用検索空間及びUE特定検索空間に分類され、前記共用検索空間は、セル内の全てのユーザ機器(UE)によってモニタリングされ、前記UE特定検索空間は、前記セル内の少なくとも1つのUEによってモニタリングされ、
前記共用検索空間は、各集団レベルにおいて固定され、
前記UE特定検索空間は、前記UE特定検索空間のための集団レベル及びパラメータY k に基づいて前記サブフレームkにおいて決定され、
Y k は、
Y k =(A・Y k−1 ) mod D
により定義され、
Y −1 は、UEの識別子から得られ、A=39827であり、D=65537であり、
前記UE特定検索空間のための集団レベルは、1、2、4及び8のうちの1つに設定され、前記共用検索空間のための集団レベルは、4及び8のうちの1つに設定される、方法。 - 前記検索空間のための前記PDCCH候補の位置は、K個のCCE毎に生じ、Kは、CCE集団レベルの大きさである、請求項1に記載の方法。
- 前記検索空間の大きさは、前記CCE集団レベルの大きさ及び前記検索空間のための前記PDCCH候補の数によって定義される、請求項2に記載の方法。
- 前記共用検索空間のためのCCE集団レベルの個数は、前記UE特定検索空間のためのCCE集団レベルの個数より小さい、請求項2に記載の方法。
- 前記共用検索空間の開始位置は、前記セル内の全てのUEについて同じである、請求項1に記載の方法。
- 前記UE特定検索空間の開始位置は、サブフレーム毎に決定される、請求項1に記載の方法。
- 共用制御情報を検索するための開始位置は、前記共用検索空間内に制限される、請求項1に記載の方法。
- 1番目の共用制御情報を検索するための開始位置及び2番目の共用制御情報を検索するための開始位置は、前記共用検索空間内に制限される、請求項7に記載の方法。
- 前記1番目の共用制御情報を検索するための前記開始位置は、前記2番目の共用制御情報を検索するための前記開始位置と異なる、請求項8に記載の方法。
- PDCCH(physical downlink control channel)をモニタリングするユーザ機器であって、
前記ユーザ機器は、
無線信号を受信するRF(radio frequency)部と、
前記RF部と連結されるプロセッサと
を備え、
前記プロセッサは、
サブフレームkの検索空間のためのPDCCH候補の集合をモニタリングするように構成され、
前記サブフレームは、制御情報を伝送するための制御領域を含み、前記制御領域は、複数のCCE(control channel element)にマッピングされる複数のリソースエレメントを含み、CCEは、リソースエレメントの集合に対応し、前記検索空間は、連続的なCCEの集団を示す各集団レベルにおけるPDCCHの集合により定義され、隣接するCCEの集合を含む前記検索空間は、共用検索空間及びUE特定検索空間に分類され、前記共用検索空間は、セル内の全てのユーザ機器(UE)によってモニタリングされ、前記UE特定検索空間は、前記セル内の少なくとも1つのUEによってモニタリングされ、
前記共用検索空間は、各集団レベルにおいて固定され、
前記UE特定検索空間は、前記UE特定検索空間のための集団レベル及びパラメータY k に基づいて前記サブフレームkにおいて決定され、
Y k は、
Y k =(A・Y k−1 ) mod D
により定義され、
Y −1 は、UEの識別子から得られ、A=39827であり、D=65537であり、
前記UE特定検索空間のための集団レベルは、1、2、4及び8のうちの1つに設定され、前記共用検索空間のための集団レベルは、4及び8のうちの1つに設定される、ユーザ機器。
Applications Claiming Priority (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US97614007P | 2007-09-28 | 2007-09-28 | |
| US60/976,140 | 2007-09-28 | ||
| US2344008P | 2008-01-25 | 2008-01-25 | |
| US61/023,440 | 2008-01-25 | ||
| US3372508P | 2008-03-04 | 2008-03-04 | |
| US61/033,725 | 2008-03-04 | ||
| US4597008P | 2008-04-18 | 2008-04-18 | |
| US61/045,970 | 2008-04-18 | ||
| KR1020080090742A KR101448309B1 (ko) | 2007-09-28 | 2008-09-16 | 무선통신 시스템에서 하향링크 제어채널 모니터링 방법 |
| KR10-2008-0090742 | 2008-09-16 | ||
| PCT/KR2008/005700 WO2009041779A1 (en) | 2007-09-28 | 2008-09-25 | Wireless communication system for monitoring physical downlink control channel |
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| Publication Number | Publication Date |
|---|---|
| JP2010541367A JP2010541367A (ja) | 2010-12-24 |
| JP5048841B2 true JP5048841B2 (ja) | 2012-10-17 |
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| Country | Link |
|---|---|
| US (1) | US8401542B2 (ja) |
| EP (1) | EP2193616B1 (ja) |
| JP (1) | JP5048841B2 (ja) |
| KR (1) | KR101448309B1 (ja) |
| CN (1) | CN101809898B (ja) |
| WO (1) | WO2009041779A1 (ja) |
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2008
- 2008-09-16 KR KR1020080090742A patent/KR101448309B1/ko active Active
- 2008-09-25 JP JP2010526828A patent/JP5048841B2/ja active Active
- 2008-09-25 CN CN200880108947.7A patent/CN101809898B/zh active Active
- 2008-09-25 EP EP08834216.7A patent/EP2193616B1/en active Active
- 2008-09-25 WO PCT/KR2008/005700 patent/WO2009041779A1/en not_active Ceased
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2010541367A (ja) | 2010-12-24 |
| US8401542B2 (en) | 2013-03-19 |
| KR101448309B1 (ko) | 2014-10-08 |
| KR20090033001A (ko) | 2009-04-01 |
| EP2193616A1 (en) | 2010-06-09 |
| US20090088148A1 (en) | 2009-04-02 |
| CN101809898B (zh) | 2014-01-08 |
| WO2009041779A1 (en) | 2009-04-02 |
| CN101809898A (zh) | 2010-08-18 |
| EP2193616B1 (en) | 2014-07-23 |
| EP2193616A4 (en) | 2011-05-11 |
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