JP6038880B2 - キャリアアグリゲーションをサポートする無線通信システムで複数個のタイミングアドバンスグループを管理する方法及び装置 - Google Patents
キャリアアグリゲーションをサポートする無線通信システムで複数個のタイミングアドバンスグループを管理する方法及び装置 Download PDFInfo
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Description
図6は、本発明の主要動作流れ図を説明するための図面である。
前述したように、端末に各セカンダリセルの設定情報(SCell configuration)を提供する際、すべてのセカンダリセルの設定情報に上記セカンダリセルが属したTAGインテックス値を含ませる。したがって、実施形態1と異なり、TAGインテックス 値を含まないSCell設定情報は存在しない。しかし、相変らずプライマリセル(PCell)の場合には別に指示せず最も上位TAGインテックス値を割り当てる。すなわち、TAGインテックス値が0から開始すると、PCellが含まれたPTAGのTAGインテックス値は0となる。図6の615、625段階から2nd embodimentと表示されたTAGインテックス情報が実施形態2に該当する。
135 ユーザ端末
305 基地局
315 キャリア
330 端末機
501 マクロ基地局
600 端末
605 基地局
1003 多重化装置
1003 逆多重化装置
1007 制御メッセージ処理部
1009 制御部
1011 キャリアアグリゲーション動作処理部
1103 多重化装置
1103 逆多重化装置
1105 上位階層装置
1107 制御メッセージ処理部
1109 制御部
1111 キャリア直接処理部
Claims (22)
- CA(Carrier Aggregation)をサポートする無線通信システムにおける基地局のTAG(Timing Advance Group)の管理方法において、
少なくとも1つのセルを少なくとも1つのTAGにマッピングする段階と、
設定されるべきセルが特定のTAGに含まれているか否かを判断する段階と、
前記セルが特定のTAGに含まれていない場合には、前記セルのTAG識別子が設定された制御情報を端末に伝送する段階と、
前記セルが特定のTAGに含まれている場合には、前記セルのTAG識別子なしに制御情報を端末に伝送する段階とを含み、
前記TAGは、同一のアップリンクタイミングが設定された少なくとも1つのセルを含むことを特徴とする方法。 - 前記特定のTAGは、プライマリセル(Primary Cell)を含むプライマリTAG(Primary TAG)であることを特徴とする請求項1に記載の方法。
- 前記TAG識別子と関連するTAGのタイミングを調整するために、TAG識別子及びTAC(Timing Advance Command)を含むMAC CE(MAC Control Element)を前記端末に伝送する段階をさらに含むことを特徴とする請求項1に記載の方法。
- 前記TAG識別子が0であると、前記TACはプライマリTAGのためのものであることを特徴とする請求項3に記載の方法。
- 前記TAG識別子が0ではないと、前記TACはプライマリセルを含まないセカンダリTAG(Secondary TAG)のためのものであることを特徴とする請求項3に記載の方法。
- PDCCH orderを利用して、少なくとも1つのセカンダリセルのタイミングを調整するための非競争ベースランダムアクセス手順を開始する段階をさらに含むことを特徴とする請求項1に記載の方法。
- CA(Carrier Aggregation)をサポートする無線通信システムにおけるTAG(Timing Advance Group)の管理のための基地局において、
信号を送信及び受信する送受信部と、
少なくとも1つのセルを少なくとも1つのTAGにマッピングし、
設定されるべきセルが特定のTAGに含まれているか否かを判断し、
前記セルが特定のTAGに含まれていない場合には、前記セルのTAG識別子が設定された制御情報を端末に伝送し、
前記セルが特定のTAGに含まれている場合には、前記セルのTAG識別子なしに制御情報を端末に伝送するように制御する制御部とを含み、
前記TAGは、同一のアップリンクタイミングが設定された少なくとも1つのセルを含むことを特徴とする基地局。 - 前記特定のTAGは、プライマリセル(Primary Cell)を含むプライマリTAG(Primary TAG)であることを特徴とする請求項7に記載の基地局。
- 前記制御部は、
前記TAG識別子と関連するTAGのタイミングを調整するために、TAG識別子及びTAC(Timing Advance Command)を含むMAC CE(MAC Control Element)を前記端末に伝送するように制御することを特徴とする請求項7に記載の基地局。 - 前記TAG識別子が0であると、前記TACはプライマリTAGのためのものであることを特徴とする請求項9に記載の基地局。
- 前記TAG識別子が0ではないと、前記TACはプライマリセルを含まないセカンダリTAG(Secondary TAG)のためのものであることを特徴とする請求項9に記載の基地局。
- 前記制御部は、
PDCCH orderを利用して、少なくとも1つのセカンダリセルのタイミングを調整するための非競争ベースランダムアクセス手順を開始するように制御することを特徴とする請求項7に記載の基地局。 - CA(Carrier Aggregation)をサポートする無線通信システムにおける端末のTAG(Timing Advance Group)の管理方法において、
第1のセルの設定に関する第1の制御情報を受信する段階と、
第2のセルが特定のセルに含まれていない場合には、TAG識別子を含む第2の制御情報を受信し、前記第2のセルが前記特定のセルに含まれている場合には、前記TAG識別子を含まない前記第2の制御情報を受信する段階と、
前記TAG識別子と関連するTAGのタイミングを調整するために、前記第1のセルまたは前記第2のセルのうち少なくとも1つと関連するTAG識別子及びTAC(Timing Advance Command)を含むMAC CE(MAC Control Element)を受信する段階と、
前記TAG識別子と関連するTAGに前記TACを適用する段階とを含むことを特徴とする方法。 - 前記TAG識別子が0であると、前記TACはプライマリセル(Primary Cell)を含むプライマリTAG(Primary TAG)のためのものであり、
前記TAG識別子が0ではないと、前記TACは前記プライマリセルを含まないセカンダリTAG(Secondary TAG)のためのものであることを特徴とする請求項13に記載の方法。 - 前記TAGは、同一のアップリンクタイミングが設定された少なくとも1つのセルを含むことを特徴とする請求項13に記載の方法。
- 前記第1のセルはプライマリセルであり、前記第1のセルのためのTAGはプライマリTAGであることを特徴とする請求項13に記載の方法。
- PDCCH orderを利用して、少なくとも1つのセカンダリセルのタイミングを調整するための非競争ベースランダムアクセス手順を開始するための情報を受信する段階をさらに含むことを特徴とする請求項13に記載の方法。
- CA(Carrier Aggregation)をサポートする無線通信システムにおける端末のTAG(Timing Advance Group)の管理方法において、
第1のセルの設定に関する第1の制御情報を受信し、
第2のセルが特定のセルに含まれていない場合には、TAG識別子を含む第2の制御情報を受信し、前記第2のセルが前記特定のセルに含まれている場合には、前記TAG識別子を含まない前記第2の制御情報を受信し、
前記TAG識別子と関連するTAGのタイミングを調整するために、前記第1のセルまたは前記第2のセルのうち少なくとも1つと関連するTAG識別子及びTAC(Timing Advance Command)を含むMAC CE(MAC Control Element)を受信する送受信部と、
前記TAG識別子と関連するTAGに前記TACを適用するように制御する制御部とを含むことを特徴とする端末。 - 前記TAG識別子が0であると、前記TACはプライマリセル(Primary Cell)を含むプライマリTAG(Primary TAG)のためのものであり、
前記TAG識別子が0ではないと、前記TACは前記プライマリセルを含まないセカンダリTAG(Secondary TAG)のためのものであることを特徴とする請求項18に記載の端末。 - 前記TAGは、同一のアップリンクタイミングが設定された少なくとも1つのセルを含むことを特徴とする請求項18に記載の端末。
- 前記第1のセルはプライマリセルであり、前記第1のセルのためのTAGはプライマリTAGであることを特徴とする請求項18に記載の端末。
- 前記制御部は、
PDCCH orderを利用して、少なくとも1つのセカンダリセルのタイミングを調整するための非競争ベースランダムアクセス手順を開始するための情報を受信するよう
に制御することを特徴とする請求項18に記載の端末。
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