JP6714151B2 - 無線通信システムにおけるチャネル状態情報を報告するための方法及びそのための装置 - Google Patents
無線通信システムにおけるチャネル状態情報を報告するための方法及びそのための装置 Download PDFInfo
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- JP6714151B2 JP6714151B2 JP2019510602A JP2019510602A JP6714151B2 JP 6714151 B2 JP6714151 B2 JP 6714151B2 JP 2019510602 A JP2019510602 A JP 2019510602A JP 2019510602 A JP2019510602 A JP 2019510602A JP 6714151 B2 JP6714151 B2 JP 6714151B2
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- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 4
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- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 2
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 2
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
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- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- IHCCLXNEEPMSIO-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 IHCCLXNEEPMSIO-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- 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
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank into account
-
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- 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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- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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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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- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
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- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
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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
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- Engineering & Computer Science (AREA)
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- Mathematical Physics (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Description
の時間単位の倍数として表現される。ここで、
であり、
である。ダウンリンク(downlink)及びアップリンク(uplink)転送は
の区間を有する無線フレーム(radio frame)で構成される。ここで、無線フレームは各々
の区間を有する10個のサブフレーム(subframe)で構成される。この場合、アップリンクに対する1セットのフレーム及びダウンリンクに対する1セットのフレームが存在することができる。
の増加する順に番号が付けられて、無線フレーム内で
の増加する順に番号が付けられる。1つのスロットは
の連続するOFDMシンボルで構成され、
は用いられるヌメロロジー及びスロット設定(slot configuration)によって決定される。サブフレームでスロット
の開始は同一サブフレームでOFDMシンボル
の開始と時間的に整列される。
サブキャリアで構成される1つまたはその以上の資源グリッド及び
のOFDMシンボルにより説明される。ここで、
である。前記
は最大転送帯域幅を示し、これは、ヌメロロジーだけでなく、アップリンクとダウンリンクとの間にも変わることができる。
により固有的に識別される。ここで、
は周波数領域上のインデックスであり、
はサブフレーム内でシンボルの位置を称する。スロットで資源要素を称する時には、インデックス対
が用いられる。ここで、
である。
は複素値(complex value)
に該当する。混同(confusion)する危険がない場合、または特定アンテナポートまたはヌメロロジーが特定されない場合には、インデックスp及びμはドロップ(drop)されることができ、その結果、複素値は
または
になることができる。
連続的なサブキャリアとして定義される。周波数領域上で、物理資源ブロックは0から
まで番号が付けられる。この際、周波数領域上の物理資源ブロック番号(physical resource block number)
と資源要素
との間の関係は、数式1のように与えられる。
まで番号が付けられる。
はradio frame内スロット番号(slot number)を示し、pseudo-random sequence generatorは
である各OFDMシンボルの開始でCintに初期化される。
で、端末に設定/適用されることができる。
1st instance (w/ offset 0): BM CSI set_1
1st instance (w/ offset 1): BM CSI set_2
…
1st instance (w/ offset K-1): BM CSI set_1_K (K is configurable)
端末がMPコードブックとして設定される場合、panel co-phase modeに関する指示子(例えば、1 bitのPCMI)は、別にまたはRIと共にエンコードされることができる。
1st instance: RI+wideband W1+wideband W2+wideband CQI
mode 1-1
1st instance: RI
2nd instance: wideband W1+wideband W2+wideband CQI
Mode 1-1においてRIは、プロテクションを高めるために1st instanceでエンコードされ、1st instanceは、2nd instanceのinteger multipleである。
mode 2-0(sub-band reporting mode)
1st instance: RI+sub-band W1+sub-band W2+sub-band CQI+R
mode 2-1
1st instance: RI+wideband W1+wideband W2+wideband CQI
2nd instance: RI+wideband W1+sub-band W2+sub-band CQI+L
mode 2-2
1st instance: RI
2nd instance: wideband W1+sub-band W2+sub-band CQI+L
mode 2-3
1st instance: RI+wideband W1
2nd instance: sub-band W2+sub-band CQI+L
1st instance: (RI+PTI=1) + sub-band W1 + sub-band W2 + sub-band CQI + L
mode 3(sub-band reporting mode)
1st instance: RI + wideband W1 and/or (wideband W2 + wideband CQI)
2nd instance: (sub-band W2 + sub-band CQI)_1 + (sub-band W2 + sub-band CQI)_2 + … + (sub-band W2 + sub-band CQI)_K
mode 3-1(sub-band reporting mode)
1st instance: RI + wideband W1 +wideband W2 + wideband CQI + (sub-band W2 + sub-band CQI)_1 + (sub-band W2 + sub-band CQI)_2 + … + (sub-band W2 + sub-band CQI)_NSB
、X-polアンテナを考慮して、総2L個のビームの中で最も強靭なビーム選択(strongest beam selection)、wideband amplitude combiningから構成されることができ、W2は、2L個のビームのsub-band phase及びamplitude combiningから構成されることができる。
Part 2:PMI+CQI
または
Part 1:RI+RPI+CQI(wideband)
Part 2:PMI+CQI(sub-band、仮にsub-band reportingモードが設定される場合)
または
Part 1:RI+RPI+CQI
Part 2:PMI
)を表すように動作できる。
になることができ、Lが「4」である場合、最大6bitで「0」または「0」でないビームの数を知らせることができる。
Part 2:PMI+RPI
または
Part 1:RI+N_RPI0+wideband CQI
Part 2:PMI+RPI+sub-band CQI
または
Part 1:RI+N_RPI0
Part 2:PMI+RPI+CQI
Part 2:RPI+CQI(sub-band)
Part 3:PMI
または
Part 1:RI+CQI(wideband)
Part 2:RPI
Part 3:PMI+CQI(sub-band)
Part 2:RPI
Part 3:PMI 2
Part 2:RPI
Part 3:PMI 2+sub-band CQI
Part 2:RPI+sub-band CQI
Part 3:PMI 2
Part 2:RPI
Part 3:PMI 2+CQI
Part 2:RPI+wideband CQI
Part 3:PMI 2+sub-band CQI
Part 2:RPI+PMI_m(W1)
Part 3:PMI 2(W2)
Part 2:RPI+PMI_m(W1)+sub-band CQI
Part 3:PMI 2(W2)
Part 2:RPI+PMI_m(W1)
Part 3:PMI 2(W2)+sub-band CQI
Part 2:RPI+PMI_m(W1)
Part 3:PMI 2(W2)+CQI
Part 2:PMI
Part 2:PMI 2+sub-band CQI
Part 2:RPI+CQI
Part 2:PMI+RPI
Part 2:PMI+RPI+PMI_m
Part 2:PMI+RPI+PMI_m+CQI
Part 2:PMI+RPI+PMI_m+sub-band CQI
Part 2:RPI+PMI_m(W1)
Part 3:PMI 2(W2)
Part 2:PMI+RPI+PMI_m
Part 2:PMI、第2番目のコードワードに対するCQI
Part 2:PMI、第1番目のコードワード及びCQIのための第2番目のコードワードに対するsub-band CQI
Part 2:PMI
は、非周期的CSI Reportingがトリガーされるためのすべてのサービングセルのrankが1と仮定されるCRC bitを含むCQIビットの数を意味する。
は、以下の数式9によって与えられた現在PUSCH転送サブフレームにおいて、SC-FDMAシンボルの数を表す。
である場合、Part 1に対するprotectionが難しくなりえ、
と
との間の割合が1より大きくなることができるから、
の値が1より小さな正の実数を持たない限り、資源割り当てが混雑になることができる。
の値中、
の値を端末に知らせるか、または
の値が周期的reportingのRI値によって指示されるRIを最大RIと想定して、最大RI値以下の値のうち、ペイロードを最も多く(または最も少なく)占めるrankに対応する値として計算されることができる。
になることができ、3個のPartから構成される場合、
になることができる。
の値は、一部CSIパラメータが省略される場合(例えば、特定sub-bandのPMI等)、CSI omissionが反映された後に計算されるペイロードの大きさとして適用されることができる。すなわち、実際転送されるCSIのペイロードの大きさとして計算されなければならない。
Claims (13)
- 無線通信システムにおける端末がチャネル状態情報(CSI)を報告する方法であって、
基地局からCSIと関連した構成情報を受信するステップと、
前記構成情報に基づいてCSIを測定するステップと、
前記測定されたCSIを前記基地局に報告するステップと、を含むものの、
前記CSIは、第1パート及び第2パートから構成され、
前記第1パートは、ランク指示子(RI)、チャネル品質指示子(CQI)及び0でない振幅係数の数を表す指示子を含み、
前記第2パートは、プリコーディング行列指示子(PMI)を含む、方法。 - 前記第2パートのペイロードの大きさは、前記第1パートによって決定される、請求項1に記載の方法。
- 前記PMIのbitwidthは、前記ランク指示子及び前記指示子に基づいて決定される、請求項2に記載の方法。
- 前記CSIは、物理アップリンクデータチャネル(PUSCH)上において転送され、
前記CSIの転送パワーは、前記第1パートのビット数が増加するにつれて増加される、請求項1に記載の方法。 - 前記ランク指示子、前記チャネル品質指示子及び前記指示子は、前記第1パート内で各々別のフィールドを有して同じコーディング率でエンコードされる、請求項1に記載の方法。
- 前記指示子は、階層別に独立的に指示される、請求項1に記載の方法。
- 前記第1パートは、前記第2パートよりさらに高いCSI優先順位を有し、
前記第1パート及び前記第2パートは、前記CSI優先順位に応じて復調参照信号(DMRS)がマッピングされるシンボル以後のシンボルにマッピングされる、請求項1に記載の方法。 - 前記第1パート及び前記第2パートは、前記DMRSがマッピングされるシンボルのインデックスが増加する方向に順次にマッピングされる、請求項8に記載の方法。
- 前記第1パートがマッピングされるシンボルの数は、前記第1パートのビット数及び前記第2パートのビット数に基づいて決定される、請求項1に記載の方法。
- 前記第1パート及び前記第2パートは、各々互いに異なる変調順序及び/またはコーディング率に応じてエンコードされる、請求項1に記載の方法。
- 前記第1パートと前記第2パートは、互いに異なる転送パワーを介して転送され、前記第1パート及び/または前記第2パートの特定値は、繰り返し転送される、請求項1に記載の方法。
- 無線通信システムにおけるチャネル状態情報(CSI)を報告する端末であって、
無線信号を送受信するためのRFモジュールと、
前記RFモジュールを制御するプロセッサと、を含むものの、前記プロセッサは、
基地局からCSIと関連した構成情報を受信し、
前記構成情報に基づいてCSIを測定し、
前記測定されたCSIを前記基地局に報告するものの、
前記CSIは、第1パート及び第2パートから構成され、
前記第1パートは、ランク指示子(RI)、チャネル品質指示子(CQI)及び0でない振幅係数の数を表す指示子を含み、
前記第2パートは、プリコーディング行列指示子(PMI)を含む端末。
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