JP6961073B2 - 無線通信システムにおける端末の制御信号モニタリング方法、及び前記方法を用いる端末 - Google Patents
無線通信システムにおける端末の制御信号モニタリング方法、及び前記方法を用いる端末 Download PDFInfo
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Description
Claims (19)
- 無線通信システムにおける端末(UE)の制御信号モニタリング方法であって、
RRC(radio resource control)シグナリングを通じて、CSI−RS(channel state information− reference signal)それぞれのQCL(Quasi Co Location)の基準に関するCSI−RS設定情報を受信し、
RRCシグナリングを通じて、複数の制御資源集合(control resource set:CORESET:コアセット)それぞれに対する少なくとも一つの送信設定指示(Transmission Configuration Indication:TCI)状態に関する設定情報を受信し、
前記複数のCORESETで物理ダウンリンク制御チャネル(physical downlink control channel:PDCCH)のモニタリング時点(occasion)が重なる(overlap)場合、前記複数のCORESETそれぞれの検索空間タイプ(search space type)に基づいて、前記複数のCORESETの内の少なくとも一つのCORESETを選択し、及び
前記複数のCORESETの内の前記選択された少なくとも一つのCORESETのみで少なくとも一つのPDCCHをモニタリングし、
i)第1CORESETを含むように選択された前記少なくとも一つのCORESET;
ii)第1CSI−RSとQCL関連とを指示する前記第1CORESETの為の第1TCI状態、及び、第2CSI−RSとQCL関連とを指示する第2CORESETの為の第2TCI状態;並びに、
iii)前記CSI−RS設定情報により、同一のSSB(synchronization signal/PBCH block)に関連付けられている前記第1CSI−RS及び前記第2CSI−RS;に基づいて、
前記少なくとも一つのPDCCHは前記第1CORESET及び前記第2CORESETの両方でモニタリングする、方法。 - 前記少なくとも一つの制御資源集合を選択することにおいて、共通検索空間(common search space:CSS)を含む制御資源集合の優先順位が端末特定的検索空間(UE−specific search space:USS)を含む制御資源集合の優先順位に比べて高い、請求項1に記載の方法。
- 前記少なくとも一つの制御資源集合を選択することにおいて、共通検索空間(common search space:CSS)を含む制御資源集合が複数個ある場合、最も低いインデックスを有する共通検索空間を含む制御資源集合を選択する、請求項1に記載の方法。
- 前記複数の制御資源集合のうち、共通検索空間(common search space:CSS)を含む最も低いインデックスのセルから最も低いインデックスのCSS集合に対応する制御資源集合を選択する、請求項1に記載の方法。
- 前記第1制御資源集合と前記第2制御資源集合は、同一のQCL(Quasi Co Location)特性を有する制御資源集合であると仮定される、請求項1に記載の方法。
- 前記QCL特性は、空間受信パラメータ(spatial Rx parameter)に関する、請求項5に記載の方法。
- 前記QCLの基準は、SSB、又は、他の基準シグナルである、請求項1に記載の方法。
- 前記検索空間タイプは、共通検索空間(common search space:CSS)、又は、端末特定的検索空間(UE−specific search space:USS)である、請求項1に記載の方法。
- 前記第1CORESETの為にTCI状態の内の前記第1TCI状態を通知する第1MAC(Medium Access Control) CE(Control Element)、及び、前記第2CORESETの為にTCI状態の内の前記第2TCI状態を通知する第2MAC CEを受信する、請求項1に記載の方法。
- 端末(User Equipment:UE)であって、
無線信号を送信及び受信する送受信機(Transceiver)と、
前記送受信機と結合して動作するプロセッサとを備えてなり、
前記プロセッサは、
RRC(radio resource control)シグナリングを通じて、CSI−RS(channel state information− reference signal)それぞれのQCL(Quasi Co Location)の基準に関するCSI−RS設定情報を受信し、
RRCシグナリングを通じて、複数の制御資源集合(control resource set:CORESET:コアセット)それぞれに対する少なくとも一つの送信設定指示(Transmission Configuration Indication:TCI)状態に関する設定情報を受信し、
前記複数のCORESETで物理ダウンリンク制御チャネル(physical downlink control channel:PDCCH)のモニタリング時点(occasion)が重なる(overlap)場合、前記複数のCORESETそれぞれの検索空間タイプ(search space type)に基づいて、前記複数のCORESETの内の少なくとも一つのCORESETを選択し、及び
前記複数のCORESETの内の前記選択された少なくとも一つのCORESETのみで少なくとも一つのPDCCHをモニタリングし、
i)第1CORESETを含むように選択された前記少なくとも一つのCORESET;
ii)第1CSI−RSとQCL関連とを指示する前記第1CORESETの為の第1TCI状態、及び、第2CSI−RSとQCL関連とを指示する第2CORESETの為の第2TCI状態;並びに、
iii)前記CSI−RS設定情報により、同一のSSB(synchronization signal/PBCH block)に関連付けられている前記第1CSI−RS及び前記第2CSI−RS;に基づいて、
前記少なくとも一つのPDCCHは前記第1CORESET及び前記第2CORESETの両方でモニタリングする、端末。 - 前記少なくとも一つの制御資源集合を選択することにおいて、共通検索空間(common search space:CSS)を含む制御資源集合の優先順位が端末特定的検索空間(UE−specific search space:USS)を含む制御資源集合の優先順位に比べて高い、請求項10に記載の端末。
- 前記少なくとも一つの制御資源集合を選択することにおいて、共通検索空間(common search space:CSS)を含む制御資源集合が複数個ある場合、最も低いインデックスを有する共通検索空間を含む制御資源集合を選択する、請求項10に記載の端末。
- 前記複数の制御資源集合のうち、共通検索空間(common search space:CSS)を含む最も低いインデックスのセルから最も低いインデックスのCSS集合に対応する制御資源集合を選択する、請求項10に記載の端末。
- 前記第1制御資源集合と前記第2制御資源集合は、同一のQCL(Quasi Co Location)特性を有する制御資源集合であると仮定される、請求項10に記載の端末。
- 前記QCL特性は、空間受信パラメータ(spatial Rx parameter)に関する、請求項14に記載の端末。
- 前記QCLの基準は、SSB、又は、他の基準シグナルである、請求項10に記載の端末。
- 前記検索空間タイプは、共通検索空間(common search space:CSS)、又は、端末特定的検索空間(UE−specific search space:USS)である、請求項10に記載の端末。
- 前記第1CORESETの為にTCI状態の内の前記第1TCI状態を通知する第1MAC(Medium Access Control) CE(Control Element)、及び、前記第2CORESETの為にTCI状態の内の前記第2TCI状態を通知する第2MAC CEを受信する、請求項10に記載の端末。
- 無線通信装置を制御するプロセッサであって、
RRC(radio resource control)シグナリングを通じて、CSI−RS(channel state information− reference signal)それぞれのQCL(Quasi Co Location)の基準に関するCSI−RS設定情報を受信し、
RRCシグナリングを通じて、複数の制御資源集合(control resource set:CORESET:コアセット)それぞれに対する少なくとも一つの送信設定指示(Transmission Configuration Indication:TCI)状態に関する設定情報を受信し、
前記複数のCORESETで物理ダウンリンク制御チャネル(physical downlink control channel:PDCCH)のモニタリング時点(occasion)が重なる(overlap)場合、前記複数のCORESETそれぞれの検索空間タイプ(search space type)に基づいて、前記複数のCORESETの内の少なくとも一つのCORESETを選択し、及び
前記複数のCORESETの内の前記選択された少なくとも一つのCORESETのみで少なくとも一つのPDCCHをモニタリングし、
i)第1CORESETを含むように選択された前記少なくとも一つのCORESET;
ii)第1CSI−RSとQCL関連とを指示する前記第1CORESETの為の第1TCI状態、及び、第2CSI−RSとQCL関連とを指示する第2CORESETの為の第2TCI状態;並びに、
iii)前記CSI−RS設定情報により、同一のSSB(synchronization signal/PBCH block)に関連付けられている前記第1CSI−RS及び前記第2CSI−RS;に基づいて、
前記少なくとも一つのPDCCHは前記第1CORESET及び前記第2CORESETの両方でモニタリングする、プロセッサ。
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