JP6618111B2 - 無線通信システムで多重ユーザ多重入力多重出力伝送方法 - Google Patents
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Description
RE リソース要素:Resource Element
DCI ダウンリンク制御情報:Downlink Control Information
TDM 時分割多重化
FDM 周波数分割多重化
PDSCH ダウンリンク共有チャネル
Claims (14)
- 階層の数の情報を含むダウンリンク制御情報を伝送する段階と、
前記ダウンリンク制御情報に基づいて、少なくとも1つのユーザ端末(User Equipment、UE)特定基準信号(specific Reference Signal、specific RS)と物理ダウンリンク共有チャネル(Physical Downlink Shared Channel、PDSCH)でデータを伝送する段階と、
前記UE特定基準信号の数は、階層の数に対応し、
前記UE特定基準信号を含む直交周波数分割多重化(Orthogonal Frequency Division Multiplexing、OFDM)シンボル内における前記階層の数を把握できる場合、前記UE特定基準信号の値γは、数式
前記数式におけるN_DRSは、階層の数であり、N_SFは、ワルシコード拡散長さであり、前記UE特定基準信号は、少なくとも1つの多重化符号によってコード分割多重化(Code division multiplexing)される、無線信号の伝送方法。 - 前記階層の数が2より大きく、4以下である場合、各OFDMシンボル内に含まれた前記PDSCHリソース要素当たりのエネルギーと、前記UE特定基準信号のリソース要素当たりのエネルギーとの比は、−3dBである、請求項1記載の無線信号の伝送方法。
- 前記少なくとも1つの多重化コード情報は、ダウンリンク制御情報によって、基地局から前記UEに伝送される、請求項1記載の無線信号の伝送方法。
- 無線信号を伝送するための基地局装置において、
ユーザ端末(User Equipment、UE)特定基準信号(specific Reference Signal、specific RS)を含む各直交周波数分割多重化(Orthogonal Frequency Division Multiplexing、OFDM)シンボル内における物理ダウンリンク共有チャネル(Physical Downlink Shared Channel、PDSCH)リソース要素当たりのエネルギー(Energy Per Resource Element、EPRE)と、前記UE特定基準信号のエネルギーとの比を決定するための制御部と、
前記決定された、PDSCHリソース要素当たりのエネルギーと、UE特定基準信号のリソース要素当たりのエネルギーとの比によって、UE特定基準信号を伝送する通信部とを含み、
前記各OFDMシンボル内に含まれた前記PDSCHリソース要素当たりのエネルギーと、前記UE特定基準信号のリソース要素当たりのエネルギーとの比は、階層の数によって決定され、前記UE特定基準信号は、少なくとも1つの多重化符号によってコード分割多重化(Code division multiplexing)される、無線信号を伝送するための基地局装置。 - 前記少なくとも1つの多重化コード情報は、ダウンリンク制御情報によって、基地局から前記UEに伝送される、請求項4記載の無線信号を伝送するための基地局装置。
- ユーザ端末における無線通信信号の受信方法において、
階層の数の情報を含むダウンリンク制御情報を受信する段階と、
前記ダウンリンク制御情報に基づいて、ユーザ端末(User Equipment、UE)特定基準信号(specific Reference Signal、specific RS)及び物理ダウンリンク共有チャネル(Physical Downlink Shared Channel、PDSCH)でデータを受信する段階とを含み、
前記UE特定基準信号を含む直交周波数分割多重化(Orthogonal Frequency Division Multiplexing、OFDM)シンボル内における前記階層の数を把握できる場合、前記UE特定基準信号の値γは、数式
前記数式におけるN_DRSは、階層の数であり、N_SFは、ワルシコード拡散長さであり、前記UE特定基準信号は、少なくとも1つの多重化符号によってコード分割多重化(Code division multiplexing)される、ユーザ端末における無線通信信号の受信方法。 - 前記階層の数が2より大きく、4以下である場合、前記各OFDMシンボル内に含まれた前記PDSCHリソース要素当たりのエネルギーと、前記UE特定基準信号のリソース要素当たりのエネルギーとの比は、−3dBである、請求項7記載のユーザ端末における無線通信信号の受信方法。
- ユーザ端末で無線通信信号を受信するための方法において、
物理ダウンリンク共有チャネル(Physical Downlink Shared Channel、PDSCH)リソース要素当たりのエネルギー(Energy Per Resource Element、EPRE)と、ユーザ端末(User Equipment、UE)特定基準信号(specific Reference Signal、specific RS)を含む各直交周波数分割多重化(Orthogonal Frequency Division Multiplexing、OFDM)シンボル内におけるUE特定基準信号のリソース要素当たりのエネルギーとの比を識別する段階と、
前記識別された、PDSCHリソース要素当たりのエネルギーと、UE特定基準信号のリソース要素当たりのエネルギーとの比によって、UE特定基準信号を受信する段階とを含み、
前記PDSCHリソース要素当たりのエネルギーと、前記各OFDMシンボル内に含まれたUE特定基準信号のリソース要素当たりのエネルギーとの比は、階層の数によって決定され、前記UE特定基準信号は、[1、1][1、−1]のうち1つでコード分割多重化され、前記UE特定基準信号は、少なくとも1つの多重化符号によってコード分割多重化(Code division multiplexing)される、無線信号の受信方法。 - 前記少なくとも1つの多重化コード情報は、ダウンリンク制御情報によって、基地局から端末に伝送された情報として識別される、請求項9記載の無線信号の受信方法。
- 無線通信信号を受信するためのユーザ端末装置において、
物理ダウンリンク共有チャネル(Physical Downlink Shared Channel、PDSCH)リソース要素当たりのエネルギー(Energy Per Resource Element、EPRE)と、ユーザ端末(User Equipment、UE)特定基準信号(specific Reference Signal、specific RS)を含む各直交周波数分割多重化(Orthogonal Frequency Division Multiplexing、OFDM)シンボル内におけるUE特定基準信号のリソース要素当たりのエネルギーとの比を識別するための制御部と、
前記識別された、PDSCHリソース要素当たりのエネルギーと、UE特定基準信号のリソース要素当たりのエネルギーとの比によって、UE特定基準信号を受信する通信部とを含み、
前記PDSCHリソース要素当たりのエネルギーと、前記各OFDMシンボル内に含まれたUE特定基準信号のリソース要素当たりのエネルギーとの比は、階層の数によって決定され、前記UE特定基準信号は、[1、1][1、−1]のうち1つでコード分割多重化され、前記UE特定基準信号は、少なくとも1つの多重化符号によってコード分割多重化(Code division multiplexing)される、無線信号を受信するためのユーザ端末装置。 - 前記少なくとも1つの多重化コード情報は、基地局から、ダウンリンク制御情報によって伝送されて識別される、請求項12記載の無線信号を受信するためのユーザ端末装置。
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CN104619002B (zh) | 2018-08-28 |
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EP2420008A4 (en) | 2014-11-26 |
WO2010120106A3 (en) | 2011-01-27 |
JP2016027747A (ja) | 2016-02-18 |
RU2011141585A (ru) | 2013-04-20 |
CN102461001B (zh) | 2016-02-17 |
CN102461001A (zh) | 2012-05-16 |
USRE48849E1 (en) | 2021-12-07 |
US8369885B2 (en) | 2013-02-05 |
USRE46161E1 (en) | 2016-09-20 |
USRE47338E1 (en) | 2019-04-02 |
KR101705665B1 (ko) | 2017-02-23 |
JP2012524451A (ja) | 2012-10-11 |
US20100260059A1 (en) | 2010-10-14 |
EP3787201A1 (en) | 2021-03-03 |
RU2649856C2 (ru) | 2018-04-05 |
WO2010120106A2 (en) | 2010-10-21 |
EP2420008A2 (en) | 2012-02-22 |
EP2420008B1 (en) | 2021-03-31 |
CN104619002A (zh) | 2015-05-13 |
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