JP2017513271A - 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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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/26035—Maintenance of orthogonality, e.g. for signals exchanged between cells or users, or by using covering codes or sequences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
- H04L27/2692—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with preamble design, i.e. with negotiation of the synchronisation sequence with transmitter or sequence linked to the algorithm used at the receiver
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- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
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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 (8)
- 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、
前記D2D通信のための同期信号(Synchronization Signal)及び前記同期信号の復調のための復調参照信号(Demodulation reference signal;DM−RS)を送信し、
前記復調参照信号の基本シーケンス(base sequence)は、
同期参照識別子(Synchronization reference ID)を用いて生成される、同期信号送信方法。 - 前記基本シーケンスは、
前記同期参照識別子を予め決定された値によって割った値に基づいて生成される、請求項1に記載の同期信号送信方法。 - 前記復調参照信号(DM−RS)のためのOCC(Orthogonal Cover Code)は、
前記同期参照識別子の下位1ビットを用いて決定される、請求項1に記載の同期信号送信方法。 - 前記復調参照信号(DM−RS)のための巡回シフト(cyclic shift)は、
前記同期参照識別子の下位3ビットを用いて決定される、請求項1に記載の同期信号送信方法。 - 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(Radio Frequency Unit)と、
プロセッサ(Processor)とを含み、
前記プロセッサは、前記D2D通信のための同期信号(Synchronization Signal)及び前記同期信号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、
前記復調参照信号の基本シーケンス(base sequence)は、
同期参照識別子(Synchronization reference ID)を用いて生成される、端末。 - 前記基本シーケンスは、
前記同期参照識別子を予め決定された値によって割った値に基づいて生成される、請求項5に記載の端末。 - 前記復調参照信号(DM−RS)のためのOCC(Orthogonal Cover Code)は、
前記同期参照識別子の下位1ビットを用いて決定される、請求項5に記載の端末。 - 前記復調参照信号(DM−RS)のための巡回シフト(cyclic shift)は、
前記同期参照識別子の下位3ビットを用いて決定される、請求項5に記載の端末。
Applications Claiming Priority (13)
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US201461939714P | 2014-02-13 | 2014-02-13 | |
US61/939,714 | 2014-02-13 | ||
US201461977598P | 2014-04-09 | 2014-04-09 | |
US61/977,598 | 2014-04-09 | ||
US201461990089P | 2014-05-07 | 2014-05-07 | |
US61/990,089 | 2014-05-07 | ||
US201462063381P | 2014-10-13 | 2014-10-13 | |
US62/063,381 | 2014-10-13 | ||
US201462079553P | 2014-11-14 | 2014-11-14 | |
US62/079,553 | 2014-11-14 | ||
US201462081557P | 2014-11-18 | 2014-11-18 | |
US62/081,557 | 2014-11-18 | ||
PCT/KR2015/001475 WO2015122715A1 (ko) | 2014-02-13 | 2015-02-13 | 무선 통신 시스템에서 d2d통신을 위한 동기화 신호 송수신방법 및 이를 위한 장치 |
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JP2019236844A Active JP6864072B2 (ja) | 2014-02-13 | 2019-12-26 | 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 |
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US (4) | US10420050B2 (ja) |
EP (1) | EP3107230B1 (ja) |
JP (2) | JP6640727B2 (ja) |
KR (3) | KR102300047B1 (ja) |
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 |
KR20160122147A (ko) | 2016-10-21 |
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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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