JP2012521709A - 多重アンテナシステムにおける参照信号送信方法及び装置 - Google Patents
多重アンテナシステムにおける参照信号送信方法及び装置 Download PDFInfo
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- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
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Abstract
【解決手段】多重アンテナシステムにおける参照信号送信方法は、複数のOFDMシンボルを含むサブフレームで少なくとも一個のOFDMシンボルを選択する段階;選択された前記少なくとも一個のOFDMシンボルに複数のアンテナの各々に対するチャネル状態を測定することができるCQI RSを割り当てる段階;及び、前記CQI RSを送信する段階;を含み、前記CQI RSは、セル内の全ての端末に共通的に送信される共用参照信号または前記セル内の特定端末に送信される専用参照信号が割り当てられるOFDMシンボルと重ならないOFDMシンボルに割り当てられることを特徴とする。
【選択図】図27
Description
例えば、本発明は以下の項目を提供する。
(項目1)
多重アンテナシステムにおける参照信号送信方法は、
複数のOFDM(Orthogonal Frequency Division Multiplexing)シンボルを含むサブフレームで少なくとも一個のOFDMシンボルを選択する段階;
選択された上記少なくとも一個のOFDMシンボルに複数のアンテナの各々に対するチャネル状態を測定することができるCQI RS(Channel Quality Indication Reference Signal)を割り当てる段階;及び、
上記CQI RSを送信する段階;を含み、
上記CQI RSは、セル内の全ての端末に共通的に送信される共用参照信号または上記セル内の特定端末に送信される専用参照信号が割り当てられるOFDMシンボルと重ならないOFDMシンボルに割り当てられることを特徴とする多重アンテナシステムにおける参照信号送信方法。
(項目2)
上記CQI RSは、上記サブフレーム内で一個または2個のOFDMシンボルに割り当てられることを特徴とする項目1に記載の多重アンテナシステムにおける参照信号送信方法。
(項目3)
上記一個のOFDMシンボルは、ノーマルCP(normal cyclic prefix)の場合、OFDMシンボル3、5、6、8、9、10、12、13のうちいずれか一つであることを特徴とする項目2に記載の多重アンテナシステムにおける参照信号送信方法。ここで、OFDMシンボルN(Nは、0または自然数)は、上記サブフレーム内の14個OFDMシンボルをOFDMシンボル0乃至13で表す場合、N番目のOFDMシンボルを意味する。
(項目4)
上記一個のOFDMシンボルは、拡張CP(extended CP)の場合、OFDMシンボル4、5、7、8、10、11のうちいずれか一つであることを特徴とする項目2に記載の多重アンテナシステムにおける参照信号送信方法。
(項目5)
上記CQI RSは、上記一個のOFDMシンボルにおいて、8個、6個、4個、2個または1個のリソース要素(resource element)に割り当てられることを特徴とする項目2に記載の多重アンテナシステムにおける参照信号送信方法。
(項目6)
上記CQI RSは、8個、4個、2個または1個のコードを適用して多重化されることを特徴とする項目2に記載の多重アンテナシステムにおける参照信号送信方法。
(項目7)
上記CQI RSは、上記2個のOFDMシンボルにおいて、16個、12個、8個、4個、2個または1個のリソース要素(resource element)に割り当てられることを特徴とする項目2に記載の多重アンテナシステムにおける参照信号送信方法。
(項目8)
端末にCQI RS設定指示子(CQI RS configuration indicator)を送信する段階をさらに含み、上記CQI RS設定指示子は、上記CQI RSが送信されるサブフレーム、上記CQI RSが割り当てられる無線リソース情報を含むことを特徴とする項目1に記載の多重アンテナシステムにおける参照信号送信方法。
(項目9)
上記多重アンテナシステムは、8個の送信アンテナを含むことを特徴とする項目1に記載の多重アンテナシステムにおける参照信号送信方法。
Claims (9)
- 多重アンテナシステムにおける参照信号送信方法は、
複数のOFDM(Orthogonal Frequency Division Multiplexing)シンボルを含むサブフレームで少なくとも一個のOFDMシンボルを選択する段階;
選択された前記少なくとも一個のOFDMシンボルに複数のアンテナの各々に対するチャネル状態を測定することができるCQI RS(Channel Quality Indication Reference Signal)を割り当てる段階;及び、
前記CQI RSを送信する段階;を含み、
前記CQI RSは、セル内の全ての端末に共通的に送信される共用参照信号または前記セル内の特定端末に送信される専用参照信号が割り当てられるOFDMシンボルと重ならないOFDMシンボルに割り当てられることを特徴とする多重アンテナシステムにおける参照信号送信方法。 - 前記CQI RSは、前記サブフレーム内で一個または2個のOFDMシンボルに割り当てられることを特徴とする請求項1に記載の多重アンテナシステムにおける参照信号送信方法。
- 前記一個のOFDMシンボルは、ノーマルCP(normal cyclic prefix)の場合、OFDMシンボル3、5、6、8、9、10、12、13のうちいずれか一つであることを特徴とする請求項2に記載の多重アンテナシステムにおける参照信号送信方法。ここで、OFDMシンボルN(Nは、0または自然数)は、前記サブフレーム内の14個OFDMシンボルをOFDMシンボル0乃至13で表す場合、N番目のOFDMシンボルを意味する。
- 前記一個のOFDMシンボルは、拡張CP(extended CP)の場合、OFDMシンボル4、5、7、8、10、11のうちいずれか一つであることを特徴とする請求項2に記載の多重アンテナシステムにおける参照信号送信方法。
- 前記CQI RSは、前記一個のOFDMシンボルにおいて、8個、6個、4個、2個または1個のリソース要素(resource element)に割り当てられることを特徴とする請求項2に記載の多重アンテナシステムにおける参照信号送信方法。
- 前記CQI RSは、8個、4個、2個または1個のコードを適用して多重化されることを特徴とする請求項2に記載の多重アンテナシステムにおける参照信号送信方法。
- 前記CQI RSは、前記2個のOFDMシンボルにおいて、16個、12個、8個、4個、2個または1個のリソース要素(resource element)に割り当てられることを特徴とする請求項2に記載の多重アンテナシステムにおける参照信号送信方法。
- 端末にCQI RS設定指示子(CQI RS configuration indicator)を送信する段階をさらに含み、前記CQI RS設定指示子は、前記CQI RSが送信されるサブフレーム、前記CQI RSが割り当てられる無線リソース情報を含むことを特徴とする請求項1に記載の多重アンテナシステムにおける参照信号送信方法。
- 前記多重アンテナシステムは、8個の送信アンテナを含むことを特徴とする請求項1に記載の多重アンテナシステムにおける参照信号送信方法。
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US29935410P | 2010-01-29 | 2010-01-29 | |
US61/299,354 | 2010-01-29 | ||
KR1020100025968A KR101719818B1 (ko) | 2009-03-23 | 2010-03-23 | 다중안테나 시스템에서 참조신호 전송방법 및 장치 |
KR10-2010-0025968 | 2010-03-23 | ||
PCT/KR2010/001789 WO2010110588A2 (ko) | 2009-03-23 | 2010-03-23 | 다중안테나 시스템에서 참조신호 전송방법 및 장치 |
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US20180337712A1 (en) | 2018-11-22 |
WO2010110588A3 (ko) | 2011-01-06 |
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JP2014171251A (ja) | 2014-09-18 |
EP2413516A4 (en) | 2014-07-23 |
CN102362443B (zh) | 2015-10-07 |
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US9258038B2 (en) | 2016-02-09 |
WO2010110588A2 (ko) | 2010-09-30 |
US20140205035A1 (en) | 2014-07-24 |
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EP2413516A2 (en) | 2012-02-01 |
US11616621B2 (en) | 2023-03-28 |
CN102362443A (zh) | 2012-02-22 |
US20160149620A1 (en) | 2016-05-26 |
JP5542290B2 (ja) | 2014-07-09 |
US10587314B2 (en) | 2020-03-10 |
US10038478B2 (en) | 2018-07-31 |
US8675481B2 (en) | 2014-03-18 |
JP5809732B2 (ja) | 2015-11-11 |
KR20100106251A (ko) | 2010-10-01 |
KR101719818B1 (ko) | 2017-03-27 |
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