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WO2008030446A3 - Rfid readers systems and methods for hopping away from a frequency channel with rf interference - Google Patents

Rfid readers systems and methods for hopping away from a frequency channel with rf interference Download PDF

Info

Publication number
WO2008030446A3
WO2008030446A3 PCT/US2007/019323 US2007019323W WO2008030446A3 WO 2008030446 A3 WO2008030446 A3 WO 2008030446A3 US 2007019323 W US2007019323 W US 2007019323W WO 2008030446 A3 WO2008030446 A3 WO 2008030446A3
Authority
WO
WIPO (PCT)
Prior art keywords
interference
methods
rfid readers
frequency channel
channel
Prior art date
Application number
PCT/US2007/019323
Other languages
French (fr)
Other versions
WO2008030446A2 (en
Inventor
Christopher J Diorio
Aanand Esterberg
Thomas G Anderl
Scott A Cooper
Original Assignee
Impinj Inc
Christopher J Diorio
Aanand Esterberg
Thomas G Anderl
Scott A Cooper
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
Priority claimed from US11/849,737 external-priority patent/US7592897B2/en
Priority claimed from US11/849,804 external-priority patent/US7589618B2/en
Application filed by Impinj Inc, Christopher J Diorio, Aanand Esterberg, Thomas G Anderl, Scott A Cooper filed Critical Impinj Inc
Publication of WO2008030446A2 publication Critical patent/WO2008030446A2/en
Publication of WO2008030446A3 publication Critical patent/WO2008030446A3/en

Links

Classifications

    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
    • 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
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • 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
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • H04B2001/7154—Interference-related aspects with means for preventing interference
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Noise Elimination (AREA)

Abstract

RFID readers, systems, and methods are provided for overcoming the effects of RF interference. While a system is communicating in a channel, RF interference is monitored. If it is low, then the next channel to be hopped onto is chosen in an unbiased manner. But if interference is high, then the next channel to be hopped onto is chosen in a biased manner that disfavors at least one channel over another, in view of the detected interference. The choice of the next channel can thus result in diminishing communication in channels with a lot of RF interference.
PCT/US2007/019323 2006-09-07 2007-09-05 Rfid readers systems and methods for hopping away from a frequency channel with rf interference WO2008030446A2 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US84280906P 2006-09-07 2006-09-07
US60/842,809 2006-09-07
US91998907P 2007-03-26 2007-03-26
US60/919,989 2007-03-26
US11/849,804 2007-09-04
US11/849,737 US7592897B2 (en) 2006-04-25 2007-09-04 RFID readers system and methods for early hopping out of a frequency channel in the presence of RF interference
US11/849,804 US7589618B2 (en) 2006-04-25 2007-09-04 RFID readers systems and methods for hopping away from a frequency channel with RF interference
US11/849,737 2007-09-04

Publications (2)

Publication Number Publication Date
WO2008030446A2 WO2008030446A2 (en) 2008-03-13
WO2008030446A3 true WO2008030446A3 (en) 2008-06-26

Family

ID=39157796

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2007/019323 WO2008030446A2 (en) 2006-09-07 2007-09-05 Rfid readers systems and methods for hopping away from a frequency channel with rf interference
PCT/US2007/019360 WO2008030471A2 (en) 2006-09-07 2007-09-05 Rfid readers systems and methods for early hopping out of a frequency channel in the presence of rf interference

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/US2007/019360 WO2008030471A2 (en) 2006-09-07 2007-09-05 Rfid readers systems and methods for early hopping out of a frequency channel in the presence of rf interference

Country Status (1)

Country Link
WO (2) WO2008030446A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7589618B2 (en) 2006-04-25 2009-09-15 Diorio Christopher J RFID readers systems and methods for hopping away from a frequency channel with RF interference
US7592897B2 (en) 2006-04-25 2009-09-22 Impinj, Inc. RFID readers system and methods for early hopping out of a frequency channel in the presence of RF interference
EP3697003A1 (en) * 2019-02-13 2020-08-19 ABB Schweiz AG Radio-based detector and method to protect against unpredictable interference in industrial wireless communications

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060006986A1 (en) * 2004-07-09 2006-01-12 Kelly Gravelle Multi-protocol or multi-command RFID system
US20060022800A1 (en) * 2004-07-30 2006-02-02 Reva Systems Corporation Scheduling in an RFID system having a coordinated RFID tag reader array

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5394433A (en) * 1993-04-22 1995-02-28 International Business Machines Corporation Frequency hopping pattern assignment and control in multiple autonomous collocated radio networks
US5471469A (en) * 1994-02-08 1995-11-28 Metricon, Inc. Method of resolving media contention in radio communication links
US5828693A (en) * 1996-03-21 1998-10-27 Amtech Corporation Spread spectrum frequency hopping reader system
JP3478062B2 (en) * 1997-06-12 2003-12-10 三菱電機株式会社 Mobile communication system, mobile station, and base station

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060006986A1 (en) * 2004-07-09 2006-01-12 Kelly Gravelle Multi-protocol or multi-command RFID system
US20060022800A1 (en) * 2004-07-30 2006-02-02 Reva Systems Corporation Scheduling in an RFID system having a coordinated RFID tag reader array

Also Published As

Publication number Publication date
WO2008030446A2 (en) 2008-03-13
WO2008030471A2 (en) 2008-03-13
WO2008030471A3 (en) 2008-12-18

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