JP5574449B2 - 無線通信装置及び参照信号生成方法 - Google Patents
無線通信装置及び参照信号生成方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0055—ZCZ [zero correlation zone]
- H04J13/0059—CAZAC [constant-amplitude and zero auto-correlation]
- H04J13/0062—Zadoff-Chu
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
- H04J11/0053—Interference mitigation or co-ordination of intercell interference using co-ordinated multipoint transmission/reception
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/354—Adjacent channel leakage power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0074—Code shifting or hopping
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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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding 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
- H04L5/0001—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
- 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
- H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
- H04L5/0035—Resource allocation in a cooperative multipoint environment
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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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
- H04L5/0091—Signaling for the administration of the divided path
-
- 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
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- 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
- H04L5/0058—Allocation criteria
- H04L5/0073—Allocation arrangements that take into account other cell interferences
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mobile Radio Communication Systems (AREA)
- Near-Field Transmission Systems (AREA)
- Noise Elimination (AREA)
Description
図4は、本発明の実施の形態1に係る無線通信端末装置(以下、「端末」という)10の構成を示すブロック図である。以下、端末100の構成について図4を用いて説明する。
uN(t)=hopping(uN_init+t) ・・・(1)
uCoMP(t)=u((t)mod(3)+1)(t) ・・・(2)
本発明の実施の形態2に係る端末の構成は、実施の形態1の図4に示した構成と同様であり、ホッピングパターン算出部104の機能が異なるのみなので、ホッピングパターン算出部104について図4を援用して説明する。なお、本発明の実施の形態2に係る基地局の構成は、実施の形態1の図5に示した構成と同様であり、ホッピングパターン算出部209の機能が異なるのみである。これは端末のホッピングパターン算出部104と同様であるので、その詳細な説明は省略する。
uCoMP(t)=u((t)mod(27)+4)(t) ・・・(3)
本発明の実施の形態3では、あるセル内に複数のCoMP端末が存在し、複数のCoMP端末が異なるCoMPセットに含まれる場合について説明する。この場合、CoMP端末毎にSRS用ZC系列番号のホッピングパターンを設けると、セル内の各CoMP端末のSRS用ZC系列番号が異なるものになる。このため、複数のCoMP端末が用いるSRS間をCDM(符号軸)によって直交化することができなくなり、CQI推定精度が劣化してしまう。また、TDM(時間軸)又はFDM(周波数軸)により、複数のCoMP端末のSRSを多重すると、SRSは直交するのでCQI推定精度の劣化を防止できるが、セル内のSRS送信用の時間及び周波数リソースの消費(オーバーヘッド)が増加してしまう。
102、207 CoMPセット内ZC系列番号設定部
103、208 システム内ZC系列番号設定部
104、209 ホッピングパターン算出部
105、210 ZC系列生成部
106 マッピング部
107、212 IFFT部
108 CP付加部
109 送信RF部
110、210 アンテナ
202 受信RF部
203 CP除去部
204 FFT部
205 デマッピング部
211 除算部
213 マスク処理部
214 DFT部
215 CQI推定部
Claims (6)
- 複数のセル間で協調して送受信を行うCoMP(Coordinated Multiple Point transmission and reception)送受信を適用するCoMP端末か、前記CoMP送受信を適用しないNon−CoMP端末かのいずれかを設定するCoMPモード設定手段と、
参照信号に用いるZC(Zadoff-Chu)系列の番号をホッピングさせる複数の異なるホッピングパターンを有し、前記CoMPモード設定手段によって設定された前記CoMP端末又は前記Non−CoMP端末に応じたホッピングパターンでZC系列番号をホッピングさせ、ZC系列番号を算出するホッピングパターン算出手段と、
算出されたZC系列番号を用いて、ZC系列を生成するZC系列生成手段と、
を具備する無線通信装置。 - 前記ホッピングパターン算出手段は、前記CoMPモード設定手段によって自装置が前記CoMP端末と設定された場合、協調して送受信する前記複数のセルをグループ化したCoMPセット内で使われるZC系列番号をホッピングさせ、ZC系列番号を算出する請求項1に記載の無線通信装置。
- 前記ホッピングパターン算出手段は、前記CoMPモード設定手段によって自装置が前記CoMP端末と設定された場合、協調して送受信する前記複数のセルをグループ化したCoMPセット外で使われるZC系列番号をホッピングさせ、ZC系列番号を算出する請求項1に記載の無線通信装置。
- 前記CoMPセットは、セル内に存在する複数のCoMP端末がそれぞれ属するCoMPセットを構成する全てのセルで構成させる請求項2に記載の無線通信装置。
- 前記CoMPセットは、セル内に存在する複数のCoMP端末がそれぞれ属するCoMPセットを構成する全てのセルで構成させる請求項3に記載の無線通信装置。
- 複数のセル間で協調して送受信を行うCoMP(Coordinated Multiple Point transmission and reception)送受信を適用するCoMP端末か、前記CoMP送受信を適用しないNon−CoMP端末かのいずれかを設定し、
参照信号に用いるZC(Zadoff-Chu)系列の番号をホッピングさせる複数の異なるホッピングパターンを有し、前記設定されたCoMP端末又は前記設定されたNon−CoMP端末に応じたホッピングパターンでZC系列番号をホッピングさせ、ZC系列番号を算出し、
算出されたZC系列番号を用いて、前記参照信号に用いるZC系列を生成する、
参照信号生成方法。
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JP2011538265A JP5574449B2 (ja) | 2009-10-30 | 2010-10-29 | 無線通信装置及び参照信号生成方法 |
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JP2014130310A Active JP5788568B2 (ja) | 2009-10-30 | 2014-06-25 | 通信装置、系列生成方法及び集積回路 |
JP2015148418A Active JP6065071B2 (ja) | 2009-10-30 | 2015-07-28 | 通信装置、参照信号受信方法及び集積回路 |
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US (9) | US8797986B2 (ja) |
EP (3) | EP2496005B1 (ja) |
JP (4) | JP5574449B2 (ja) |
KR (1) | KR101580010B1 (ja) |
CY (1) | CY1120973T1 (ja) |
DK (1) | DK2496005T3 (ja) |
ES (3) | ES2822294T3 (ja) |
HR (1) | HRP20181417T1 (ja) |
HU (1) | HUE039041T2 (ja) |
LT (1) | LT2496005T (ja) |
PL (3) | PL2496005T3 (ja) |
PT (1) | PT2496005T (ja) |
RS (1) | RS57614B1 (ja) |
SI (1) | SI2496005T1 (ja) |
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