GB2274750A - Method and circuit for selecting tuning of a radio receiver - Google Patents

Method and circuit for selecting tuning of a radio receiver

Info

Publication number
GB2274750A
GB2274750A GB9326218A GB9326218A GB2274750A GB 2274750 A GB2274750 A GB 2274750A GB 9326218 A GB9326218 A GB 9326218A GB 9326218 A GB9326218 A GB 9326218A GB 2274750 A GB2274750 A GB 2274750A
Authority
GB
United Kingdom
Prior art keywords
radio receiver
control channels
communication link
circuit
power levels
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB9326218A
Other versions
GB9326218D0 (en
GB2274750B (en
Inventor
Christopher F Bussan
Patrick J Marry
Duane C Rabe
Charles P Binzel
Arvind S Arora
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of GB9326218D0 publication Critical patent/GB9326218D0/en
Publication of GB2274750A publication Critical patent/GB2274750A/en
Application granted granted Critical
Publication of GB2274750B publication Critical patent/GB2274750B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0091—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with means for scanning over a band of frequencies
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
  • Transceivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

A circuit and method for selecting tuning of a radio receiver to a frequency channel of a set of frequency channels. The radio receiver scans selected or control channels and measures the power levels of signals generated upon control channels. Only when the measured power levels (684) of the signals generated upon the respective ones of the control channels are in excess of a certain power level is a communication link attempted to he effectuated with a transmitter of such data signals (696). When a communication link cannot be effectuated, the radio receiver powers down (708) for a predetermined time period, then powers on again (710), and the power levels of signals transmitted upon the control channels are again measured (710). Effectuation of a communication link with a transmitter which transmits a signal upon one of the control channels is attempted if the measured power level on such control channel increases beyond a certain amount. <IMAGE>
GB9326218A 1992-05-08 1993-04-19 Method and circuit for selecting tuning of a radio receiver Expired - Lifetime GB2274750B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88080892A 1992-05-08 1992-05-08
PCT/US1993/003692 WO1993023963A1 (en) 1992-05-08 1993-04-19 Method and circuit for selecting tuning of a radio receiver

Publications (3)

Publication Number Publication Date
GB9326218D0 GB9326218D0 (en) 1994-04-20
GB2274750A true GB2274750A (en) 1994-08-03
GB2274750B GB2274750B (en) 1996-06-12

Family

ID=25377146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9326218A Expired - Lifetime GB2274750B (en) 1992-05-08 1993-04-19 Method and circuit for selecting tuning of a radio receiver

Country Status (11)

Country Link
JP (1) JP3196211B2 (en)
CN (1) CN1035588C (en)
CA (1) CA2112809A1 (en)
DE (2) DE4392213T1 (en)
FR (1) FR2691027B1 (en)
GB (1) GB2274750B (en)
HU (1) HUT69370A (en)
IT (1) IT1261466B (en)
RU (1) RU2123771C1 (en)
SE (1) SE9400018L (en)
WO (1) WO1993023963A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07508392A (en) * 1993-04-21 1995-09-14 モトローラ・インコーポレーテッド Method and circuit for radio receiver retuning
FR2726139A1 (en) * 1994-10-19 1996-04-26 Philips Electronics Nv RADIO RECEIVER WITH AUTOMATIC STATION SEARCH
EP0714217B1 (en) * 1994-11-22 2005-07-27 Ntt Mobile Communications Network Inc. Method for searching a control channel in a mobile station
US5940746A (en) * 1995-12-29 1999-08-17 Motorola, Inc. Channel scanning apparatus and method
JP3271504B2 (en) * 1996-02-02 2002-04-02 三菱電機株式会社 Frequency estimation circuit and AFC circuit using the same
GB2320991A (en) * 1996-12-20 1998-07-08 Dsc Telecom Lp Channel selection control in a cellular radio communications system
EP0983701A2 (en) * 1997-04-14 2000-03-08 Nortel Networks Limited Method and system for avoiding communication failure in cdma systems
US6233247B1 (en) 1998-03-12 2001-05-15 Nortel Networks Limited Method and system for avoiding communication failure in CDMA systems
US6396867B1 (en) 1997-04-25 2002-05-28 Qualcomm Incorporated Method and apparatus for forward link power control
GB2332823A (en) * 1997-12-29 1999-06-30 Samsung Electronics Co Ltd Sequential selection of control channels for call attempt
GB9925234D0 (en) * 1999-10-25 1999-12-22 Simoco Int Ltd Mobile radio communications systems
KR100374568B1 (en) * 2001-01-17 2003-03-03 삼성전자주식회사 Power off control method for mobile station
EP1482747B1 (en) * 2003-05-28 2006-10-11 Telefonaktiebolaget LM Ericsson (publ) Cell search scheduling in a wireless cellular communication network
JP4551814B2 (en) * 2005-05-16 2010-09-29 Ｏｋｉセミコンダクタ株式会社 Wireless communication device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783780A (en) * 1985-07-09 1988-11-08 U.S. Philips Corp. Method and apparatus for selecting a free channel in a mobile radio system
US4903320A (en) * 1987-03-20 1990-02-20 Fujitsu Limited Apparatus for selecting control channel in mobile communication system
US4905301A (en) * 1988-07-28 1990-02-27 Motorola, Inc. Selective system scan for multizone radiotelephone subscriber units
US5119502A (en) * 1990-08-30 1992-06-02 Telefonaktiebolaget L M Ericsson Periodic system ordered rescan in a cellular communication system
US5203012A (en) * 1992-02-10 1993-04-13 Motorola, Inc. Method and apparatus for optimum channel assignment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2087369A5 (en) * 1970-05-15 1971-12-31 Cit Alcatel
DE2402562C3 (en) * 1974-01-19 1978-07-13 Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh, 8500 Nuernberg Method for the automatic search of modulated radio channels
GB2057267B (en) * 1979-08-29 1983-05-18 Allcock J A Sensory isolation tank
CH671124A5 (en) * 1986-04-30 1989-07-31 Zellweger Uster Ag
FI83715C (en) * 1989-09-25 1991-08-12 Nokia Mobile Phones Ltd LOGIKSTYRD INTRIMNING OCH KOMPENSATION AV SIGNALNIVAOER OCH DEVIATIONER I EN RADIOTELEFON.
FI83717C (en) * 1989-09-25 1991-08-12 Nokia Mobile Phones Ltd Procedure for tuning and compensating power levels in a radiophone
JP2867538B2 (en) * 1990-01-30 1999-03-08 日本電気株式会社 Channel selection method
JP2927055B2 (en) * 1991-07-12 1999-07-28 日本電気株式会社 Control channel acquisition method and circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783780A (en) * 1985-07-09 1988-11-08 U.S. Philips Corp. Method and apparatus for selecting a free channel in a mobile radio system
US4903320A (en) * 1987-03-20 1990-02-20 Fujitsu Limited Apparatus for selecting control channel in mobile communication system
US4905301A (en) * 1988-07-28 1990-02-27 Motorola, Inc. Selective system scan for multizone radiotelephone subscriber units
US5119502A (en) * 1990-08-30 1992-06-02 Telefonaktiebolaget L M Ericsson Periodic system ordered rescan in a cellular communication system
US5203012A (en) * 1992-02-10 1993-04-13 Motorola, Inc. Method and apparatus for optimum channel assignment

Also Published As

Publication number Publication date
IT1261466B (en) 1996-05-23
HUT69370A (en) 1995-09-28
CN1082786A (en) 1994-02-23
CN1035588C (en) 1997-08-06
ITRM930277A0 (en) 1993-05-03
DE4392213C2 (en) 1999-04-29
JP3196211B2 (en) 2001-08-06
HU9400043D0 (en) 1994-05-30
CA2112809A1 (en) 1993-11-25
FR2691027A1 (en) 1993-11-12
ITRM930277A1 (en) 1994-11-03
SE9400018L (en) 1994-03-07
GB9326218D0 (en) 1994-04-20
DE4392213T1 (en) 1994-06-09
JPH06508973A (en) 1994-10-06
SE9400018D0 (en) 1994-01-04
FR2691027B1 (en) 1995-08-11
GB2274750B (en) 1996-06-12
RU2123771C1 (en) 1998-12-20
WO1993023963A1 (en) 1993-11-25

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20110120 AND 20110126

PE20 Patent expired after termination of 20 years

Expiry date: 20130418