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WO2008152739A1 - Near field communication device, near field communication system, and near field communication method - Google Patents

Near field communication device, near field communication system, and near field communication method 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
French (fr)
Japanese (ja)
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/en
Priority to JP2009519129A priority patent/JPWO2008152739A1/en
Publication of WO2008152739A1 publication Critical patent/WO2008152739A1/en

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

A near field communication device in which a decrease in an effective transmission rate can be prevented to make stable communication is provided. The near field communication device transmits an acknowledgment signal (ACK) with respect to a data request signal, receives a propagation environment measuring signal for measuring a communication environment for each predetermined period, and calculates the propagation time required for communication with other near field communication devices on the basis of the required time from the transmission of the ACK to the reception of an initial propagation environment measuring signal. The near field communication device determines a section causing signal strength to be decreased in a transmission frame including transmission data and decreases the signal strength in the decrease section to transmit the transmission frame on the basis of the propagation environment measuring signal and the propagation time.
PCT/JP2007/062166 2007-06-15 2007-06-15 Near field communication device, near field communication system, and near field communication method WO2008152739A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2007/062166 WO2008152739A1 (en) 2007-06-15 2007-06-15 Near field communication device, near field communication system, and near field communication method
JP2009519129A JPWO2008152739A1 (en) 2007-06-15 2007-06-15 Near field communication device, near field communication system, and near field communication method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/062166 WO2008152739A1 (en) 2007-06-15 2007-06-15 Near field communication device, near field communication system, and near field communication method

Publications (1)

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

Family

ID=40129356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/062166 WO2008152739A1 (en) 2007-06-15 2007-06-15 Near field communication device, near field communication system, and near field communication method

Country Status (2)

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

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 (en) * 1989-11-30 1991-07-25 Nec Corp Transmission power controller
JPH11266214A (en) * 1998-03-17 1999-09-28 Fujitsu Ltd Bidirectional communication system and uplink communication noise level determination method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03171928A (en) * 1989-11-30 1991-07-25 Nec Corp Transmission power controller
JPH11266214A (en) * 1998-03-17 1999-09-28 Fujitsu Ltd Bidirectional communication system and uplink communication noise level determination method

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 (en) 2010-08-26

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