JP6088592B2 - アップリンクレファレンス信号のためのシーケンスホッピング及び直交カバーリングコードの適用 - Google Patents
アップリンクレファレンス信号のためのシーケンスホッピング及び直交カバーリングコードの適用 Download PDFInfo
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Description
a)CSI値をCS及びOCC値にマッピングすることを定義する。これは、アドバンストユーザ端末の間で、そしてレガシーユーザ端末とアドバンスユーザ端末との間で、DMRS多重化を最適化するものである。
b)OCCの適用とともにPUSCHでシーケンスホッピングを可能にする。
a)2MU−MIMOレガシーユーザ端末:CS0及びCS1
b)3MU−MIMOレガシーユーザ端末:CS0、CS3及びCS5
c)4MU−MIMOレガシーユーザ端末:CS0、CS1、CS2及びCS7
120 スロット
130 シンボル
140 DMRS伝送
Claims (16)
- 端末がレファレンス信号(reference signal)を伝送する方法において、
セル特定シーケンスホッピング(sequence−hopping)パラメータ及び端末特定シーケンスホッピングパラメータを基地局から受信する段階と、
前記セル特定シーケンスホッピングパラメータ及び前記端末特定シーケンスホッピングパラメータに基づいて、前記レファレンス信号のシーケンスを決定する段階と、
決定された前記レファレンス信号のシーケンスに基づいて、前記基地局から前記レファレンス信号を伝送する段階と
を含み、
前記セル特定シーケンスホッピングパラメータが、シーケンスホッピングが許容されることを指示し、前記端末特定シーケンスホッピングパラメータが、前記シーケンスホッピングが許容されないことを指示するとき、前記シーケンスホッピングは、前記レファレンス信号に適用されないことを特徴とするレファレンス信号の伝送方法。 - 前記セル特定シーケンスホッピングパラメータ及び前記端末特定シーケンスホッピングパラメータは、上位階層シグナリング(higher−layer signaling)で伝送されることを特徴とする請求項1に記載のレファレンス信号の伝送方法。
- 前記セル特定シーケンスホッピングパラメータは、ブロードキャストシグナリング(broadcast signaling)で複数の端末に伝送され、前記端末特定シーケンスホッピングパラメータは、端末特定シグナリング(UE−specific signaling)で前記端末に伝送されることを特徴とする請求項1に記載のレファレンス信号の伝送方法。
- 前記レファレンス信号は、物理アップリンク共有チャネル(PUSCH;Physical Uplink Shared Channel)のためのレファレンス信号であることを特徴とする請求項1に記載のレファレンス信号の伝送方法。
- 前記シーケンスホッピングは、グループシーケンスホッピング(group sequence hopping)及びグループ内のシーケンスホッピング(sequence hopping within a group)を含むことを特徴とする請求項1に記載のレファレンス信号の伝送方法。
- 前記レファレンス信号のシーケンスを決定する段階は、前記セル特定シーケンスホッピングパラメータに基づいて、物理アップリンク制御チャネル(PUCCH;Physical Uplink Control Channel)のためのレファレンス信号に前記シーケンスホッピングが適用されるか否かを決定する段階を含むことを特徴とする請求項1に記載のレファレンス信号の伝送方法。
- 前記端末特定シーケンスホッピングパラメータは、直交補完コード(OCC;Orthogonal Complementary Code)可能パラメータであることを特徴とする請求項1に記載のレファレンス信号の伝送方法。
- 前記レファレンス信号は、CAZAC(Constant Amplitude Zero Auto−Correlation)シーケンスから生成されることを特徴とする請求項1に記載のレファレンス信号の伝送方法。
- レファレンス信号を伝送する端末において、 基地局と信号を送受信する送受信部と、
セル特定シーケンスホッピング(sequence−hopping)パラメータ及び端末特定シーケンスホッピングパラメータを前記基地局から受信するように前記送受信部を制御し、
前記セル特定シーケンスホッピングパラメータ及び前記端末特定シーケンスホッピングパラメータに基づいて、前記レファレンス信号のシーケンスを決定し、
決定された前記レファレンス信号のシーケンスに基づいて、前記基地局から前記レファレンス信号を伝送するように前記送受信部を制御する制御部と
を含み、
前記セル特定シーケンスホッピングパラメータが、シーケンスホッピングが許容されることを指示し、前記端末特定シーケンスホッピングパラメータが、前記シーケンスホッピングが許容されないことを指示するとき、前記シーケンスホッピングは、前記レファレンス信号に適用されないことを特徴とする端末。 - 前記セル特定シーケンスホッピングパラメータ及び前記端末特定シーケンスホッピングパラメータは、上位階層シグナリング(higher−layer signaling)で伝送されることを特徴とする請求項9に記載の端末。
- 前記セル特定シーケンスホッピングパラメータは、ブロードキャストシグナリング(broadcast signaling)で複数の端末に伝送され、前記端末特定シーケンスホッピングパラメータは、端末特定シグナリング(UE−specific signaling)で前記端末に伝送されることを特徴とする請求項9に記載の端末。
- 前記レファレンス信号は、物理アップリンク共有チャネル(PUSCH;Physical Uplink Shared Channel)のためのレファレンス信号であることを特徴とする請求項9に記載の端末。
- 前記シーケンスホッピングは、グループシーケンスホッピング(group sequence hopping)及びグループ内のシーケンスホッピング(sequence hopping within a group)を含むことを特徴とする請求項9に記載の端末。
- 前記制御部は、前記セル特定シーケンスホッピングパラメータに基づいて、物理アップリンク制御チャネル(PUCCH;Physical Uplink Control Channel)のためのレファレンス信号に前記シーケンスホッピングが適用されるか否かを決定するようにさらに制御することを特徴とする請求項9に記載の端末。
- 前記端末特定シーケンスホッピングパラメータは、直交補完コード(OCC;Orthogonal Complementary Code)可能パラメータであることを特徴とする請求項9に記載の端末。
- 前記レファレンス信号は、CAZAC(Constant Amplitude Zero Auto−Correlation)シーケンスから生成されることを特徴とする請求項9に記載の端末。
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