JP2020504925A - 無線通信システムにおいて、参照信号を送信する方法及びそのための装置 - Google Patents
無線通信システムにおいて、参照信号を送信する方法及びそのための装置 Download PDFInfo
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- H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
- H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
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- 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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- 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
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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- H04L5/0057—Physical resource allocation for CQI
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- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H04W72/0446—Resources in time domain, e.g. slots or frames
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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
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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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
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Abstract
Description
Claims (16)
- 無線通信システムにおいて、端末がDMRS(Demodulation Reference Signal)を送信する方法であって、
上りリンクデータのためのリソース領域内の少なくとも1つのOFDMシンボルに前記DMRS信号をマッピングして送信し、
前記少なくとも1つのOFDMシンボルにおいて、前記DMRS信号がマッピングされないリソース要素は、前記上りリンクデータのために使用されない、参照信号送信方法。 - 前記DMRS信号は、前記DFT−S−OFDM方式又はCP−OFDM方式を適用して送信される、請求項1に記載の参照信号送信方法。
- 前記DFT−S−OFDM方式が適用される場合と、前記CP−OFDM方式が適用される場合のDMRSマッピングパターンは、同一である、請求項2に記載の参照信号送信方法。
- 前記DMRSは、前記少なくとも1つのOFDMシンボルに予め設定された副搬送波間隔でマッピングされる、請求項3に記載の参照信号送信方法。
- 前記DFT−S−OFDM方式が適用される場合と、前記CP−OFDM方式が適用される場合のDMRSシーケンスは、互いに異なるタイプのシーケンスに基づいて生成される、請求項2に記載の参照信号送信方法。
- 前記DFT−S−OFDM方式が適用される場合と、前記CP−OFDM方式が適用される場合のDMRSのマッピング位置は、互いに異なる、請求項5に記載の参照信号送信方法。
- 上りリンクデータを送信するためのリソースブロックグループのサイズに関する情報を受信し、
前記受信したリソースブロックグループのサイズに基づいて、前記DMRSがマッピングされないOFDMシンボルを介して送信される上りリンクデータを送信する、請求項1に記載の参照信号送信方法。 - 少なくとも1つのOFDMシンボルにおいて、さらに、上りリンクデータ送信のために使用されないリソース要素に関する制御情報を受信することを含み、
前記制御情報に基づいて、前記DMRS信号がマッピングされないリソース要素に前記上りリンクデータをマッピングしない、請求項1に記載の参照信号送信方法。 - 無線通信システムにおいて、DMRS(Demodulation Reference Signal)を送信する端末であって、
基地局と無線信号を送受信するRFモジュールと、
前記RFモジュールと接続され、上りリンクデータのためのリソース領域内の少なくとも1つのOFDMシンボルに前記DMRS信号をマッピングして送信するプロセッサと、を含み、
前記少なくとも1つのOFDMシンボルにおいて、前記DMRS信号がマッピングされないリソース要素は、前記上りリンクデータのために使用されない、端末。 - 前記DMRS信号は、前記DFT−S−OFDM方式又はCP−OFDM方式を適用して送信する、請求項9に記載の端末。
- 前記DFT−S−OFDM方式が適用される場合と、前記CP−OFDM方式が適用される場合のDMRSマッピングパターンは、同一である、請求項10に記載の端末。
- 前記DMRSは、前記少なくとも1つのOFDMシンボルに予め設定された副搬送波間隔でマッピングされる、請求項11に記載の端末。
- 前記DFT−S−OFDM方式が適用される場合と、前記CP−OFDM方式が適用される場合のDMRSシーケンスは、互いに異なるタイプのシーケンスに基づいて生成される、請求項10に記載の端末。
- 前記DFT−S−OFDM方式が適用される場合と、前記CP−OFDM方式が適用される場合のDMRSのマッピング位置は、互いに異なる、請求項13に記載の端末。
- 上りリンクデータを送信するためのリソースブロックグループのサイズに関する情報を受信し、
前記受信したリソースブロックグループのサイズに基づいて、前記DMRSがマッピングされないOFDMシンボルを介して送信される上りリンクデータを送信する、請求項9に記載の端末。 - 前記プロセッサは、
前記RFモジュールを介して、少なくとも1つのOFDMシンボルにおいて上りリンクデータ送信のために使用されないリソース要素に関する制御情報を受信し、
前記制御情報に基づいて、前記DMRS信号がマッピングされないリソース要素に前記上りリンクデータをマッピングしない、請求項9に記載の端末。
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EP3469760A1 (en) | 2019-04-17 |
US20190222389A1 (en) | 2019-07-18 |
EP3469760A4 (en) | 2020-02-19 |
KR101971972B1 (ko) | 2019-04-24 |
EP3471317B1 (en) | 2022-03-02 |
EP3471317A1 (en) | 2019-04-17 |
US10608800B2 (en) | 2020-03-31 |
JP2020506571A (ja) | 2020-02-27 |
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JP7025423B2 (ja) | 2022-02-24 |
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