JP2020080537A - 無線通信システムにおけるd2d通信のための同期化信号送受信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d2d通信のための同期化信号送受信方法及びそのための装置 Download PDFInfo
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- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H04L27/00—Modulated-carrier systems
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- H04L27/2601—Multicarrier modulation systems
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- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
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Abstract
Description
本発明による一実施例によれば、サブ周期(Sub period)でPD2DSCHを送信する場合として、反復(repetition)的に同じ信号を再送信し、受信端末がチェース結合(chase combining)を介して信号のエネルギーを累積させるようにすることができる。
本発明によってサブ周期(sub period)でPD2DSCHを送信する他の実施例として、ターボコーディング(turbo coding)或いは畳み込みコーディング(convolution coding)を行い、互いに異なるRV(Redundancy Version)値を使用して、増分リダンダンシ(incremental redundancy、IR)方式を通じて受信端末の受信率を高めることができる。
本発明の一実施例によれば、PD2DSCHで送信されるコンテンツ(contents)のうち1つとして繰り返しカウント(repetition count)が追加されてもよい。例えば、上位層シグナリング(higher layer signaling)などを通じて決定されるか、又は事前に定義された(例えば、前述した方法により)、メイン周期を知っている端末は、PD2DSCHをデコードして、繰り返しカウントフィールド(repetition count filed)値によって、どの時点で次のPD2DSCHを検出するかを知ることができる。
以下では、本発明によってD2D通信(Device to Device communication)をする端末が端末間同期化(synchronization)を行うとき、同期信号のCRCマスク(mask)設定方法について説明する。
以下では、D2D通信のための同期チャネルと関連するDM−RSに対して上述した情報を含む方法をより具体的に説明する。
Claims (4)
- 無線通信システムにおいて端末がD2D(Device−to−Device)通信のための信号を送信する方法であって、
D2D通信のための同期情報を含む物理チャネル、及び、前記物理チャネルの復調のための復調参照信号(Demodulation reference signal;DM−RS)を送信するステップを含み、
前記DM−RSの基本シーケンスは、前記同期情報に含まれる同期参照識別子を用いて生成され、
前記DM−RSのためのOCC(Orthogonal Cover Code)は、前記同期参照識別子の下位ビットの一部を用いて決定される、方法。 - 前記DM−RSのための巡回シフトは、前記OCCのために用いられる前記下位ビット以外の、前記同期参照識別子の下位ビットの一部を用いて決定される、請求項1に記載の方法。
- 無線通信システムにおいてD2D(Device−to−Device)通信のための信号を送信する端末であって、
無線周波数ユニットと、
プロセッサと、を含み、
前記プロセッサは、D2D通信のための同期情報を含む物理チャネル、及び、前記物理チャネルの復調のための復調参照信号(Demodulation reference signal;DM−RS)を送信するように構成され、
前記DM−RSの基本シーケンスは、前記同期情報に含まれる同期参照識別子を用いて生成され、
前記DM−RSのためのOCC(Orthogonal Cover Code)は、前記同期参照識別子の下位ビットの一部を用いて決定される、端末。 - 前記DM−RSのための巡回シフトは、前記OCCのために用いられる前記下位ビット以外の、前記同期参照識別子の下位ビットの一部を用いて決定される、請求項3に記載の端末。
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EP (1) | EP3107230B1 (ja) |
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CN (1) | CN106105070B (ja) |
RU (1) | RU2643351C1 (ja) |
SG (1) | SG11201606699XA (ja) |
WO (1) | WO2015122715A1 (ja) |
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JP6864072B2 (ja) | 2021-04-21 |
CN106105070B (zh) | 2018-09-21 |
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US20210266853A1 (en) | 2021-08-26 |
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KR102355626B1 (ko) | 2022-01-26 |
KR20210066026A (ko) | 2021-06-04 |
US11026200B2 (en) | 2021-06-01 |
CN106105070A (zh) | 2016-11-09 |
US11570735B2 (en) | 2023-01-31 |
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US10420050B2 (en) | 2019-09-17 |
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