JP2016006960A - 複数個の端末と同時に通信する無線パケット通信システムにおけるデータ送/受信方法 - Google Patents
複数個の端末と同時に通信する無線パケット通信システムにおけるデータ送/受信方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive loop type
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Abstract
Description
本発明の第1の実施例では、PHYオーバーヘッド全体を全ての端末が受信可能な通信経路を使用して送る方法を使用する。以下、図5を参照して説明する。
次に、本発明の第2の実施例に対して説明する。本発明の第2の実施例では、PHYオーバーヘッドの一部は、全ての端末が受信可能な通信経路を使用して送り、残りは、互いに独立的な通信経路を使用して送る方法を使用する。以下、図6を参照して説明する。
本発明の第3の実施例では、PHYオーバーヘッド全体を互いに独立的な通信経路を使用して送る方法である。以下、図7を参照して説明する。
本発明の第4の実施例では、シグナルフィールドの一部は、全ての端末が受信可能な通信経路を使用して送り、残りは、互いに独立的な通信経路を使用して送る場合のタイミング図である。以下、図8を参照して説明する。
Claims (10)
- 無線通信システムにおいてデータを複数の受信器に送信する方法であって、前記方法は、
送信されるべき物理階層プロトコルデータ単位(PPDU)のためのシンボル数に基づいて、前記複数の受信器に従って、複数のデータ長を決定するステップであって、前記複数のデータ長のそれぞれは、前記複数の受信器における対応する一つに対応する、ステップと、
前記複数のデータ長のうち、最大データ長を決定するステップと、
前記最大データ長に基づき、時間領域内の前記PPDUの長さを決定するステップと、
前記複数の受信器に前記PPDUを送信するステップであって、前記フレームは、第1のシグナルフィールドと、複数の第2のシグナルフィールドとを含む、ステップと、
を備え、
前記第1のシグナルフィールドは、前記フレームの長さを示し、前記複数の第2のシグナルフィールドのそれぞれは、前記複数の受信器における対応する一つのためのデータ長を示す、データ送信方法。 - 前記PPDUにおける前記第1のシグナルフィールドは、前記複数の受信器の全てに共通である第1の通信経路を介して送信される、請求項1に記載の方法。
- 前記PPDUにおける前記複数の第2のシグナルフィールドのそれぞれは、前記複数の受信器における対応する一つに対して固有である第2の通信経路を介して送信される、請求項1又は2に記載の方法。
- 前記第1のシグナルフィールドは、レガシー信号(L−SIG)フィールドである、請求項1に記載の方法。
- 前記第1のシグナルフィールドは、前記第1のシグナルフィールドの終端及び前記PPDUの終端との間の長さを示す、請求項1に記載の方法。
- 無線通信システムにおける複数の受信器にフレームを送信する装置が、プロセッサを備え、このプロセッサが、
送信されるべき物理階層プロトコルデータ単位(PPDU)のためのシンボル数に基づいて、前記複数の受信器に従って、複数のデータ長を決定し、前記複数のデータ長のそれぞれは、前記複数の受信器における対応する一つに対応し、
前記複数のデータ長のうち、最大データ長を決定し、
前記最大データ長に基づき、時間領域内の前記PPDUの長さを決定し、
前記複数の受信器に前記PPDUを送信し、前記フレームは、第1のシグナルフィールドと、複数の第2のシグナルフィールドとを含むように構成され、
前記第1のシグナルフィールドは、前記フレームの長さを示し、前記複数の第2のシグナルフィールドのそれぞれは、前記複数の受信器における対応する一つのためのデータ長を示す、フレーム送信装置。 - 前記PPDUにおける前記第1のシグナルフィールドは、前記複数の受信器の全てに共通である第1の通信経路を介して送信される、請求項6に記載の装置。
- 前記PPDUにおける前記複数の第2のシグナルフィールドのそれぞれは、前記複数の受信器における対応する一つに対して固有である第2の通信経路を介して送信される、請求項6又は7に記載の装置。
- 前記第1のシグナルフィールドは、レガシー信号(L−SIG)フィールドである、請求項6に記載の装置。
- 前記第1のシグナルフィールドは、前記第1のシグナルフィールドの終端及び前記PPDUの終端との間の長さを示す、請求項6に記載の装置。
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