SE9400018L - Procedure and circuit for selecting the tuner of a radio receiver - Google Patents

Procedure and circuit for selecting the tuner of a radio receiver

Info

Publication number
SE9400018L
SE9400018L SE9400018A SE9400018A SE9400018L SE 9400018 L SE9400018 L SE 9400018L SE 9400018 A SE9400018 A SE 9400018A SE 9400018 A SE9400018 A SE 9400018A SE 9400018 L SE9400018 L SE 9400018L
Authority
SE
Sweden
Prior art keywords
radio receiver
control channels
communication link
circuit
power levels
Prior art date
Application number
SE9400018A
Other languages
Swedish (sv)
Other versions
SE9400018D0 (en
Inventor
Christopher F Bussan
Patrick J Marry
Duane C Rabe
Charles P Binzel
Arvind S Arora
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 SE9400018D0 publication Critical patent/SE9400018D0/en
Publication of SE9400018L publication Critical patent/SE9400018L/en

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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Transmitters (AREA)
  • Transceivers (AREA)
  • Circuits Of Receivers In General (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>
SE9400018A 1992-05-08 1994-01-04 Procedure and circuit for selecting the tuner of a radio receiver SE9400018L (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 (2)

Publication Number Publication Date
SE9400018D0 SE9400018D0 (en) 1994-01-04
SE9400018L true SE9400018L (en) 1994-03-07

Family

ID=25377146

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9400018A SE9400018L (en) 1992-05-08 1994-01-04 Procedure and circuit for selecting the tuner 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

Family Cites Families (13)

* 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
FR2584884B1 (en) * 1985-07-09 1987-10-09 Trt Telecom Radio Electr FREE CHANNEL SEARCHING METHOD AND DEVICE FOR A MOBILE RADIO SYSTEM
CH671124A5 (en) * 1986-04-30 1989-07-31 Zellweger Uster Ag
CA1282837C (en) * 1987-03-20 1991-04-09 Tetsuya Hanawa 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
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
US5119502A (en) * 1990-08-30 1992-06-02 Telefonaktiebolaget L M Ericsson Periodic system ordered rescan in a cellular communication system
JP2927055B2 (en) * 1991-07-12 1999-07-28 日本電気株式会社 Control channel acquisition method and circuit
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
GB9326218D0 (en) 1994-04-20
DE4392213T1 (en) 1994-06-09
JPH06508973A (en) 1994-10-06
GB2274750A (en) 1994-08-03
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

Similar Documents

Publication Publication Date Title
SE9400018D0 (en) Procedure and circuit for selecting the tuner of a radio receiver
FI865149A (en) ANORDNING FOER KONTROLL AV SAENDNINGSEFFEKTEN I EN RADIOFOERBINDELSE.
EP0396347A3 (en) Radio transmitter capable of compensating for a frequency characteristic of an antenna and/or a coupling circuit
HK131496A (en) Cable television spread spectrum data transmission apparatus
GB2317284A (en) A transceiver in which the gains of the transmitter and receiver are controlled in a timed relation to the transmit/receive switching
NO883696L (en) PROCEDURE FOR TRANSFER AND / OR FOR RECEIVER SIDE USE OF ADDITIONAL INFORMATION IN A RADIO SIGNAL.
EP0316879A3 (en) Radio with broad band automatic gain control circuit
NO985372D0 (en) Spectral Scattering Communication System
EP0810744A3 (en) Communication method and communication apparatus
RU94014617A (en) RADIO RECEIVER CIRCUIT DIAGRAM
DE69834066D1 (en) Mobile station with integrated radio transmission and localization functions and method therefor
WO1996027948A3 (en) Method and apparatus for controlling frequency of a multi-channel transmitter
ATE241231T1 (en) RADIO RECEIVER WITH REDUCED RADIATION
US3475684A (en) Interrogating apparatus for determining optimum frequency for radio communication
JPS5713859A (en) Facsimile equipment
CA2181050A1 (en) Method, Device, and Radio for Compensating for Modulator Frequency Drift While Allowing for Data Transmission
JPS56123131A (en) Radio repeater
JPS6439129A (en) Communication equipment facilitating transfer of information between vehicle and stational information spot
GB2283394A (en) Method and circuit for retuning of a radio receiver
CA2271452A1 (en) Method and apparatus for desensitization of a wireless receiver
KR0131701B1 (en) Method of power control in telecommuinication
HU0001815D0 (en) Telephone with a demodulator circuit with local oscillator
KR960016572A (en) Transmission frequency stabilization circuit for cable television
JPS55161430A (en) Radio communicating system
JPS5733826A (en) Amplitude modulation radio receiver

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 9400018-9