AU2002223551A1 - Multi-mode radio communications device using a common reference oscillator - Google Patents

Multi-mode radio communications device using a common reference oscillator

Info

Publication number
AU2002223551A1
AU2002223551A1 AU2002223551A AU2355102A AU2002223551A1 AU 2002223551 A1 AU2002223551 A1 AU 2002223551A1 AU 2002223551 A AU2002223551 A AU 2002223551A AU 2355102 A AU2355102 A AU 2355102A AU 2002223551 A1 AU2002223551 A1 AU 2002223551A1
Authority
AU
Australia
Prior art keywords
mode
timers
communications device
radio communications
plls
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.)
Abandoned
Application number
AU2002223551A
Inventor
Nadim Khlat
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 AU2002223551A1 publication Critical patent/AU2002223551A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

A multi-mode radio communications device (100) provides simultaneous timebase monitoring for GSM/TDMA/EDGE using Accumulator Type 'Layer 1' timers (150) to avoid the need for one or more secondary reference phase lock loops (PLLs). The use of such timers allows achievement by only digital means of GSM and TDMA synchronisation requirements without using additional dedicated reference PLLs, as well as saving multiple integrated circuit (IC) pins and several external components. Also, through the use of such timers, no real time software adjustment is required. This provides the following further advantages: support of simultaneous multi-mode; low part count and cost savings; fast recovery from DEEP SLEEP MODE due to the settling time of the crystals only; and simplification of multi-mode DEEP SLEEP MODE since only one single crystal clock frequency relation needs to be tracked rather various clocks frequencies; and simplification of digital signal processing by allowing sharing of the same hardware resources for all modes since those hardware resources are clocked with one clock source (110) derived from one reference clock with maintained synchronisation. <IMAGE>
AU2002223551A 2000-12-07 2001-09-18 Multi-mode radio communications device using a common reference oscillator Abandoned AU2002223551A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00403441A EP1213830B1 (en) 2000-12-07 2000-12-07 Multi-mode radio communications device using a common reference oscillator
EP00403441 2000-12-07
PCT/EP2001/010896 WO2002047247A1 (en) 2000-12-07 2001-09-18 Multi-mode radio communications device using a common reference oscillator

Publications (1)

Publication Number Publication Date
AU2002223551A1 true AU2002223551A1 (en) 2002-06-18

Family

ID=8173971

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002223551A Abandoned AU2002223551A1 (en) 2000-12-07 2001-09-18 Multi-mode radio communications device using a common reference oscillator

Country Status (9)

Country Link
US (1) US7039438B2 (en)
EP (1) EP1213830B1 (en)
JP (1) JP5105688B2 (en)
KR (1) KR100785646B1 (en)
CN (1) CN1256803C (en)
AT (1) ATE249108T1 (en)
AU (1) AU2002223551A1 (en)
DE (1) DE60005030T2 (en)
WO (1) WO2002047247A1 (en)

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US7190679B2 (en) * 2002-05-16 2007-03-13 Motorola, Inc. Method and apparatus for arbitrating transmit events in a multimode communication device
US7376125B1 (en) * 2002-06-04 2008-05-20 Fortinet, Inc. Service processing switch
US7307480B2 (en) * 2002-10-31 2007-12-11 Qualcomm Incorporated Low latency frequency switching
US7266120B2 (en) * 2002-11-18 2007-09-04 Fortinet, Inc. System and method for hardware accelerated packet multicast in a virtual routing system
DE10310771A1 (en) * 2003-03-12 2004-09-23 Infineon Technologies Ag Mobile phone power consumption control device for controlling the power consumed by a phone that can support at least two transmission standards, has a control unit that controls power consumed by a low frequency generator
DE10317598A1 (en) * 2003-04-16 2004-11-25 Infineon Technologies Ag Integrated transceiver circuit
GB0404194D0 (en) 2004-02-25 2004-03-31 Ttp Communications Ltd Wireless communication device and method of operating the same
FR2870405B1 (en) * 2004-05-11 2006-07-28 Sagem MODE OF SWITCHING MODE OF OSCILLATOR AND CORRESPONDING OSCILLATOR DEVICE.
DE602005014133D1 (en) * 2004-11-12 2009-06-04 Analog Devices Inc TIME SYSTEM AND METHOD FOR A WIRELESS TRANSMIT RECEIVING SYSTEM
US7808904B2 (en) * 2004-11-18 2010-10-05 Fortinet, Inc. Method and apparatus for managing subscriber profiles
EP1829230A1 (en) * 2004-12-15 2007-09-05 Freescale Semiconductor, Inc. Fractional-n frequency generation and automatic frequency control in a wireless communication unit
CN100466777C (en) * 2005-01-14 2009-03-04 英华达（南京）科技有限公司 Method of switching communication module in communication devices
US7356350B2 (en) * 2005-03-14 2008-04-08 Broadcom Corporation Method and apparatus for generating clocks for a handheld multistandard communication system
WO2006118055A1 (en) * 2005-04-27 2006-11-09 Matsushita Electric Industrial Co., Ltd. Radio transmitting apparatus, polar modulation transmitting apparatus and wireless communication apparatus
EP1811650A1 (en) * 2006-01-10 2007-07-25 Alcatel Lucent Method for finely tuning the frequency of a radio signal
SG169336A1 (en) * 2006-01-24 2011-03-30 Agency Science Tech & Res A receiver arrangement and a transmitter arrangement
US7668920B2 (en) * 2006-03-01 2010-02-23 Fortinet, Inc. Electronic message and data tracking system
FI20065454A0 (en) * 2006-06-29 2006-06-29 Nokia Corp Control procedure, control means, communication means, computer programs, distribution programs for computer programs and data processing procedures
US7742785B2 (en) 2006-08-09 2010-06-22 Qualcomm Incorporated Reference signal generation for multiple communication systems
US7773962B2 (en) * 2006-09-13 2010-08-10 Intel Corporation Method and apparatus for efficiently applying frequency correction
US20080084922A1 (en) * 2006-10-05 2008-04-10 Bendik Kleveland Multiprotocol multiplex wireless communication apparatus and methods
US20080084919A1 (en) * 2006-10-05 2008-04-10 Zerog Wireless, Inc. Multiprotocol wireless communication apparatus and methods
US7782991B2 (en) * 2007-01-09 2010-08-24 Freescale Semiconductor, Inc. Fractionally related multirate signal processor and method
EP2163005B1 (en) * 2007-05-09 2016-07-27 ST-Ericsson SA Method and system for synchronization of at least two terminal communication systems and at least one counterpart communication station within a multi-standard wireless communication system
US8041310B2 (en) * 2007-10-01 2011-10-18 Telefonaktiebolaget Lm Ericsson (Publ) Apparatus and methods for frequency control in a multi-output frequency synthesizer
JP5282495B2 (en) * 2008-09-05 2013-09-04 富士通モバイルコミュニケーションズ株式会社 Mobile radio terminal
US20110076945A1 (en) * 2009-09-29 2011-03-31 Mediatek Inc. Methods for Controlling a Main Clock Source Shared Between Different Wireless Communication Modules and Apparatuses Using the Same
CN101840915B (en) * 2010-05-07 2011-12-21 无锡中星微电子有限公司 Pin sharing device and method
US9014740B2 (en) * 2011-12-12 2015-04-21 Broadcom Corporation Enhanced multiple SIM time tracking
US8923778B2 (en) * 2012-08-20 2014-12-30 Google Technology Holdings LLC Method for automatic frequency correction in a multi-carrier communications device
US9060735B2 (en) 2012-12-14 2015-06-23 Sharp Laboratories Of America, Inc. Classification of segments of acoustic physiological signal captured during sleep using phase-locked loop array
US11490386B2 (en) 2015-10-05 2022-11-01 Sony Semiconductor Solutions Corporation Communication apparatus and method for controlling communication apparatus
US9749962B1 (en) 2016-06-23 2017-08-29 Qualcomm Incorporated System and method for closed loop multimode radio system sleep clock frequency compensation

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US5436937A (en) * 1993-02-01 1995-07-25 Motorola, Inc. Multi-mode digital phase lock loop
JPH08223071A (en) * 1995-02-08 1996-08-30 Sony Corp Transmitter and transmitter-receiver
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US5943613A (en) * 1996-11-07 1999-08-24 Telefonaktiebolaget Lm Ericsson Method and apparatus for reducing standby current in communications equipment
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US6064325A (en) * 1998-08-11 2000-05-16 Trw Inc. Frequency modulation-based folding optical analog-to-digital converter
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JP2000244351A (en) * 1999-02-19 2000-09-08 Fujitsu Ltd Reception controller and method therefor

Also Published As

Publication number Publication date
DE60005030D1 (en) 2003-10-09
ATE249108T1 (en) 2003-09-15
EP1213830B1 (en) 2003-09-03
JP5105688B2 (en) 2012-12-26
JP2004526343A (en) 2004-08-26
DE60005030T2 (en) 2004-04-01
KR100785646B1 (en) 2007-12-14
US7039438B2 (en) 2006-05-02
WO2002047247A1 (en) 2002-06-13
CN1479967A (en) 2004-03-03
US20040037379A1 (en) 2004-02-26
KR20030057577A (en) 2003-07-04
EP1213830A1 (en) 2002-06-12
CN1256803C (en) 2006-05-17

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