JP5768152B2 - 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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- 238000004891 communication Methods 0.000 title claims description 47
- 238000000034 method Methods 0.000 title claims description 35
- 230000005540 biological transmission Effects 0.000 title description 14
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- 238000005516 engineering process Methods 0.000 description 6
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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
- 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 or capacitive transmission systems
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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
- H04L1/12—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
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
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 (6)
- 無線通信システムにおいてデータを受信する方法であって、前記方法は、
第1のシグナルフィールド、複数の第2のシグナルフィールド及び複数のデータパケットを含む、送信器からの物理階層プロトコルデータ単位(PPDU)を、受信器によって、受信する過程を備え、
前記複数の第2のシグナルフィールドの一つに基づいて、前記複数のデータパケットの一つの長さを決定し、
時間領域内の前記PPDUの長さは、複数のデータ長のうちの最大データ長に基づいて決定され、
前記複数のデータ長のそれぞれは、前記複数のデータパケットのそれぞれの長さを示し、
前記複数のデータパケットのそれぞれは、複数の受信器のそれぞれに向けられており、
前記第1のシグナルフィールドは前記PPDUの前記長さを示し、前記複数の第2のシグナルフィールドのそれぞれは、前記複数のデータ長のそれぞれを示す、データ受信方法。 - 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データを受信するために構成された装置であって、前記装置は、
送信器からの物理階層プロトコルデータ単位(PPDU)を受信するように構成された受信回路と、前記PPDUは、第1のシグナルフィールド、複数の第2のシグナルフィールド及び複数のデータパケットを含み、
前記複数の第2のシグナルフィールドの一つに基づいて、前記複数のデータパケットの一つの長さを決定するように構成された処理回路と、
を備え、
時間領域内の前記PPDUの長さは、複数のデータ長のうちの最大データ長に基づいて決定され、
前記複数のデータ長のそれぞれは、前記複数のデータパケットのそれぞれの長さを示し、
前記複数のデータパケットのそれぞれは、複数の受信器のそれぞれに向けられており、
前記第1のシグナルフィールドは前記PPDUの前記長さを示し、前記複数の第2のシグナルフィールドのそれぞれは、前記複数のデータ長のそれぞれを示す、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4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4に記載の装置。
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