JP2017022739A - 無線通信システムにおけるデータ受信方法とその装置 - Google Patents
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- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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- 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
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
- H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
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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
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
- H04L1/0008—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length by supplementing frame payload, e.g. with padding bits
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- 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
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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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
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
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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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Abstract
【解決手段】このような技術によると、無線通信システムにおけるデータフレーム生成方法において、少なくとも一つ以上の第1のサブフレームを生成するステップ;少なくとも一つ以上の第2のサブフレームを生成するステップ;及び、前記第1及び第2のサブフレームを含むデータフレームを生成するステップ;を含み、前記第1及び第2のサブフレームは、前記第1及び第2のサブフレームに含まれているMPDU(MAC Protocol Data Unit)の長さ情報を含み、前記第2のサブフレームに含まれているMPDUの長さ情報は、0であるデータフレーム生成方法が開示される。
【選択図】図1
Description
第1の追加パッド402によりサブフレームとパディングデリミタの各々の時点間隔が既設定された単位大きさの整数倍になることができる。また、第1の追加パッド、サブフレーム、及びパディングデリミタを含むデータフレームの大きさは、既設定された単位大きさの整数倍になることができる。例えば、単位大きさが4バイトである場合、第1の追加パッドの大きさは、0〜3バイトである。
第2のサブフレーム、第1のパッド、及び第2のパッドは、常にデータフレームに含まれるものではなく、前述されたように、同じ送信区間で複数の受信端末の各々に送信されるデータフレームの長さ、データフレームの既設定された単位大きさ、及びMCSレベル等によってデータフレームに含まれることができる。
この時、第1及び第2のサブフレームは、第1及び第2のサブフレームに含まれているMPDU(MAC Protocol Data Unit)の長さ情報を含み、第2のサブフレームに含まれているMPDUの長さ情報は、0である。即ち、データフレームは、アグリゲーションされたMPDU(A-MPDU)フレームであり、第2のサブフレームは、デリミタ(delimeter)である。
Claims (8)
- 無線通信システムにおいてデータを送信する方法であって、
アグリゲーションされたMPDU(A-MPDU)を生成する工程と、前記A-MPDUは、MPDU(MAC Protocol Data Unit)、デリミタ(delimeter)およびパディングデリミタ(padding delimeter)を含み、
前記A-MPDUを送信する工程と、を備え、
前記デリミタは、前記MPDUの長さを示す第1MPDU長さ、CRC情報およびシグネチャ情報を含む、方法。 - 前記パディングデリミタは、第2MPDU長さ、第2CRC情報および第2シグネチャ情報を含む、請求項1に記載の方法。
- 前記パディングデリミタは、0にセットされ得る前記第2MPDU長さを含む、請求項2に記載の方法。
- 前記A-MPDUは、複数のMPDUおよび複数のデリミタを含む、請求項1に記載の方法。
- 無線通信システムにおいてデータを送信するための装置であって、
アグリゲーションされたMPDU(A-MPDU)を生成するデータ生成部であって、前記A-MPDUは、MPDU(MAC Protocol Data Unit)、デリミタ(delimeter)およびパディングデリミタ(padding delimeter)を含む、データ生成部と、
前記A-MPDUを送信する送信部と、を備え、
前記デリミタは、前記MPDUの長さを示す第1MPDU長さ、CRC情報およびシグネチャ情報を含む、装置。 - 前記パディングデリミタは、第2MPDU長さ、第2CRC情報および第2シグネチャ情報を含む、請求項5に記載の装置。
- 前記パディングデリミタは、0にセットされ得る前記第2MPDU長さを含む、請求項6に記載の装置。
- 前記A-MPDUは、複数のMPDUおよび複数のデリミタを含む、請求項5に記載の装置。
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JP2015038743A Active JP6002791B2 (ja) | 2009-11-04 | 2015-02-27 | 無線通信システムにおけるデータフレーム生成、送信、及び受信方法とその装置 |
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