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WO2008152739A1 - 近距離通信装置、近距離通信システム、および近距離通信方法 - Google Patents

近距離通信装置、近距離通信システム、および近距離通信方法 Download PDF

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Publication number
WO2008152739A1
WO2008152739A1 PCT/JP2007/062166 JP2007062166W WO2008152739A1 WO 2008152739 A1 WO2008152739 A1 WO 2008152739A1 JP 2007062166 W JP2007062166 W JP 2007062166W WO 2008152739 A1 WO2008152739 A1 WO 2008152739A1
Authority
WO
WIPO (PCT)
Prior art keywords
near field
field communication
signal
communication device
transmission
Prior art date
Application number
PCT/JP2007/062166
Other languages
English (en)
French (fr)
Inventor
Naoki Adachi
Original Assignee
Panasonic Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to PCT/JP2007/062166 priority Critical patent/WO2008152739A1/ja
Priority to JP2009519129A priority patent/JPWO2008152739A1/ja
Publication of WO2008152739A1 publication Critical patent/WO2008152739A1/ja

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/7163—Spread spectrum techniques using impulse radio
    • H04B1/71632—Signal aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/7163—Spread spectrum techniques using impulse radio
    • H04B1/7176—Data mapping, e.g. modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

　実効的な伝送速度の低下を防止し、安定的に通信することが可能な近距離通信装置を提供する。 　データ要求信号に対する応答信号（ＡＣＫ）を送信し、通信環境を測定するための伝搬環境測定信号を所定期間毎に受信し、ＡＣＫの送信から最初の伝搬環境測定信号の受信までの所要時間に基づいて、他の近距離通信装置との通信に要する伝搬時間を算出する。この伝搬環境測定信号および伝搬時間に基づいて、送信データを含む送信フレームにおいて信号強度を低下させる低下区間を決定し、低下区間における信号強度を低下させて送信フレームを送信する。
PCT/JP2007/062166 2007-06-15 2007-06-15 近距離通信装置、近距離通信システム、および近距離通信方法 WO2008152739A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2007/062166 WO2008152739A1 (ja) 2007-06-15 2007-06-15 近距離通信装置、近距離通信システム、および近距離通信方法
JP2009519129A JPWO2008152739A1 (ja) 2007-06-15 2007-06-15 近距離通信装置、近距離通信システム、および近距離通信方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/062166 WO2008152739A1 (ja) 2007-06-15 2007-06-15 近距離通信装置、近距離通信システム、および近距離通信方法

Publications (1)

Publication Number Publication Date
WO2008152739A1 true WO2008152739A1 (ja) 2008-12-18

Family

ID=40129356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/062166 WO2008152739A1 (ja) 2007-06-15 2007-06-15 近距離通信装置、近距離通信システム、および近距離通信方法

Country Status (2)

Country Link
JP (1) JPWO2008152739A1 (ja)
WO (1) WO2008152739A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8068011B1 (en) 2010-08-27 2011-11-29 Q Street, LLC System and method for interactive user-directed interfacing between handheld devices and RFID media

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03171928A (ja) * 1989-11-30 1991-07-25 Nec Corp 送信電力制御装置
JPH11266214A (ja) * 1998-03-17 1999-09-28 Fujitsu Ltd 双方向通信システム及び上り通信雑音レベル判定方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03171928A (ja) * 1989-11-30 1991-07-25 Nec Corp 送信電力制御装置
JPH11266214A (ja) * 1998-03-17 1999-09-28 Fujitsu Ltd 双方向通信システム及び上り通信雑音レベル判定方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8068011B1 (en) 2010-08-27 2011-11-29 Q Street, LLC System and method for interactive user-directed interfacing between handheld devices and RFID media
US8395486B2 (en) 2010-08-27 2013-03-12 Q Street, LLC System and method for interactive user-directed interfacing between handheld devices and RFID media
US9858455B2 (en) 2010-08-27 2018-01-02 Q Street, LLC System and method for interactive user-directed interfacing between handheld devices and RFID media

Also Published As

Publication number Publication date
JPWO2008152739A1 (ja) 2010-08-26

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