WO1990011652A1 - Dsp based radio with diminished power requirements - Google Patents
Dsp based radio with diminished power requirements Download PDFInfo
- Publication number
- WO1990011652A1 WO1990011652A1 PCT/US1990/001336 US9001336W WO9011652A1 WO 1990011652 A1 WO1990011652 A1 WO 1990011652A1 US 9001336 W US9001336 W US 9001336W WO 9011652 A1 WO9011652 A1 WO 9011652A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- power
- signal processing
- broadcast
- amount
- Prior art date
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
- H04B1/06—Receivers
- H04B1/16—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
- H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
- H04W52/0283—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks with sequential power up or power down of successive circuit blocks, e.g. switching on the local oscillator before RF or mixer stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0287—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment
- H04W52/0293—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment having a sub-controller with a low clock frequency switching on and off a main controller with a high clock frequency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- This invention relates generally to radios, and more particularly to radios that include a digital signal processor.
- Radios generally function to receive broadcast signals. Usually, the user of a radio will not be interested in all of the signals that are broadcast on a communication resource (such as a particular frequency or a particular TDM time slot). Since many broadcast signals of interest include an identifying signal or other identifying indicia, many radios include a signal processor that examines the received broadcast signal to determine the presence of the identifying signal. If present, the radio can be further enabled to render the broadcast signal audible, visible, or otherwise as appropriate for that particular broadcast signal.
- a communication resource such as a particular frequency or a particular TDM time slot.
- radios remain squelched unless a carrier can be sensed on a particular monitored communication resource.
- Other broadcast signals include special identifying signals, such as tone signals or subaudible digital signals, that the radio can recognize and respond to.
- signals of interest can be prefaced with a specific identifying preamble, such as an ID for the intended radio.
- DSPs digital signal processors
- These processors typically receive digitized received signals. Further processing of the signal, equivalent to IF and discriminator processing, then occurs in the DSP in a digital manner. The resultant signal can then be converted into analog form and processed further as appropriate. For example, the resultant signal may be rendered audible in the case of a voice transmission.
- DSPs consume a significant amount of power when operating. This becomes a particular problem when seeking to use a DSP in a portable radio with limited power resources. DSP power consumption becomes of particular concern when the DSP operates both in the presence and absence of a broadcast signal of interest. Typically, the DSP must operate even in the absence of a broadcast signal of interest because the DSP itself aids in detecting the presence of a broadcast signal of interest. Unless the broadcast signals of Interest occur at known times, the DSP must remain active in order to detect the signal when it occurs.
- This invention allows a DSP to be used in a radio while avoiding the necessity of continuous DSP operation.
- the invention includes generally two signal processing units; the first includes the DSP and the second includes a processing unit having lesser capabilities and smaller power requirements.
- the DSP based signal processing unit functions to fully process broadcast signals of interest.
- the low power processing unit functions to detect the presence of a broadcast signal of interest, and upon detecting such a signal, the low power processing unit enables the DSP based processing unit to begin functioning.
- the high power requirements of the DSP based processing unit are necessitated only when a broadcast signal of interest exists. Otherwise, a lower power broadcast signal of interest detection mechanism monitors the communication resource.
- Fig. 1 comprises a block diagram depiction of the invention
- Fig. 2 comprises a block diagram depiction of the low power signal processing unit.
- a radio includes generally an antenna (101) for receiving broadcast signals and an RF unit (102) for appropriately processing the received broadcast signals.
- the received signals are then passed to a low power signal processing unit (106) and also through an appropriate gate (103) to a digital signal processing unit (104) (the latter typically including a DSP such as the Motorola 56000 and a microprocessor to control the DSP).
- a digital signal processing unit (104) typically including a DSP such as the Motorola 56000 and a microprocessor to control the DSP.
- the output of the digital signal processing unit (104) then couples to an appropriate amplifier (107) and speaker (108) or other output devices as appropriate to the type of message received.
- the low power signal processing unit (106) includes an appropriate IF unit (201) for receiving the output signal from the RF unit (102), a discriminator (202) for processing the IF unit (201) output to aid in recovering the original modulating signal, and a processing unit (203) for examining the recovered signal and determining whether an appropriate identifying signal is present.
- the processing unit (203) could be any relatively simple and low power device, such as a Motorola MC6303 processor.
- the processing unit (203) of the low power signal processing unit Upon detecting the presence of a broadcast signal of interest, the processing unit (203) of the low power signal processing unit provides a signal to the gate (103), thereby allowing the RF signal to be provided to the digital signal processing unit (104). At the same time, the processing unit (203) provides an enable signal to the digital signal processing unit (104) to activate that unit and cause it to begin processing the incoming signal. So configured, the digital signal processing unit will operate only when a broadcast signal of interest can be detected. Otherwise, the low power signal processing unit will monitor the received broadcast signals and control the activation of the digital signal processing unit as a function of the presence and absence of a broadcast signal of interest.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900702452A KR950000050B1 (en) | 1989-03-20 | 1990-03-13 | Dsp based radio |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US32560389A | 1989-03-20 | 1989-03-20 | |
US325,603 | 1989-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990011652A1 true WO1990011652A1 (en) | 1990-10-04 |
Family
ID=23268578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1990/001336 WO1990011652A1 (en) | 1989-03-20 | 1990-03-13 | Dsp based radio with diminished power requirements |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0463104A4 (en) |
JP (1) | JPH04504340A (en) |
KR (1) | KR950000050B1 (en) |
CA (1) | CA2045519C (en) |
WO (1) | WO1990011652A1 (en) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5230077A (en) * | 1989-08-25 | 1993-07-20 | Telefonaktiebolaget L M Ericsson | Method of reducing the power requirements in a mobile radio receiver |
EP0655872A2 (en) * | 1993-11-26 | 1995-05-31 | Nokia Mobile Phones Ltd. | Paging message processing |
GB2284728A (en) * | 1993-12-10 | 1995-06-14 | Motorola Inc | Low power, addressable data communications device |
EP0820153A2 (en) * | 1996-06-18 | 1998-01-21 | Nec Corporation | Radio selective calling receiver |
US5790946A (en) * | 1993-07-15 | 1998-08-04 | Rotzoll; Robert R. | Wake up device for a communications system |
EP0939495A1 (en) * | 1998-02-26 | 1999-09-01 | Motorola Semiconducteurs S.A. | Power saving for a electronic devices |
WO2000019622A1 (en) * | 1998-09-28 | 2000-04-06 | Sony Computer Entertainment Inc. | Method and apparatus for transceiving, receiving as well as transmitting |
US6389291B1 (en) | 2000-08-14 | 2002-05-14 | Sirf Technology | Multi-mode global positioning system for use with wireless networks |
US6462708B1 (en) | 2001-04-05 | 2002-10-08 | Sirf Technology, Inc. | GPS-based positioning system for mobile GPS terminals |
US6466161B2 (en) | 2000-08-24 | 2002-10-15 | Sirf Technology, Inc. | Location services system that reduces auto-correlation or cross-correlation in weak signals |
US6480150B2 (en) | 1999-09-17 | 2002-11-12 | Sirf Technology, Inc. | Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver |
US6542823B2 (en) | 2000-08-14 | 2003-04-01 | Sirf Technology, Inc. | Information transfer in a multi-mode global positioning system used with wireless networks |
US6671620B1 (en) | 2000-05-18 | 2003-12-30 | Sirf Technology, Inc. | Method and apparatus for determining global position using almanac information |
US6680703B1 (en) | 2001-02-16 | 2004-01-20 | Sirf Technology, Inc. | Method and apparatus for optimally tuning a circularly polarized patch antenna after installation |
US6703971B2 (en) | 2001-02-21 | 2004-03-09 | Sirf Technologies, Inc. | Mode determination for mobile GPS terminals |
US7047023B1 (en) | 2000-12-01 | 2006-05-16 | Sirf Technology, Inc. | GPS RF front end IC with frequency plan for improved integrability |
US7076256B1 (en) | 2001-04-16 | 2006-07-11 | Sirf Technology, Inc. | Method and apparatus for transmitting position data using control channels in wireless networks |
US7092369B2 (en) | 1995-11-17 | 2006-08-15 | Symbol Technologies, Inc. | Communications network with wireless gateways for mobile terminal access |
US7113552B1 (en) | 2000-12-21 | 2006-09-26 | Sirf Technology, Inc. | Phase sampling techniques using amplitude bits for digital receivers |
EP1772977A2 (en) * | 2005-10-06 | 2007-04-11 | Broadcom Corporation | Mobile communication device with low power signal detector |
WO2008040206A1 (en) | 2006-09-06 | 2008-04-10 | China Mobile Communications Corporation | Saving electricity information home electric network and saving electricity controlling method |
US7747236B1 (en) | 2000-12-11 | 2010-06-29 | Sirf Technology, Inc. | Method and apparatus for estimating local oscillator frequency for GPS receivers |
US7877104B2 (en) | 2001-05-21 | 2011-01-25 | Sirf Technology Inc. | Method for synchronizing a radio network using end user radio terminals |
US7925210B2 (en) | 2001-05-21 | 2011-04-12 | Sirf Technology, Inc. | Synchronizing a radio network with end user radio terminals |
WO2012067968A1 (en) * | 2010-11-15 | 2012-05-24 | Qualcomm Incorporated | Power conservation in wireless access terminals using integrated proxy function |
US8947300B2 (en) | 2003-09-02 | 2015-02-03 | Csr Technology Inc. | Control and features for satellite positioning system receivers |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4419765A (en) * | 1979-10-12 | 1983-12-06 | Keith H. Wycoff | Signal absence detector |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3753122A (en) * | 1971-03-31 | 1973-08-14 | K Shackleford | Frequency responsive radio actuator for automatically connecting the receiver portion and the audio portion |
JPS61240719A (en) * | 1985-04-18 | 1986-10-27 | Nec Corp | Receiver |
GB2201866B (en) * | 1987-03-04 | 1991-04-17 | Michael Victor Rodrigues | Improvements in or relating to cellular telephone apparatus and a cellular communications system |
-
1990
- 1990-03-13 EP EP19900905882 patent/EP0463104A4/en not_active Withdrawn
- 1990-03-13 JP JP2505473A patent/JPH04504340A/en active Pending
- 1990-03-13 KR KR1019900702452A patent/KR950000050B1/en not_active IP Right Cessation
- 1990-03-13 WO PCT/US1990/001336 patent/WO1990011652A1/en not_active Application Discontinuation
- 1990-03-13 CA CA002045519A patent/CA2045519C/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4419765A (en) * | 1979-10-12 | 1983-12-06 | Keith H. Wycoff | Signal absence detector |
Cited By (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5230077A (en) * | 1989-08-25 | 1993-07-20 | Telefonaktiebolaget L M Ericsson | Method of reducing the power requirements in a mobile radio receiver |
US5790946A (en) * | 1993-07-15 | 1998-08-04 | Rotzoll; Robert R. | Wake up device for a communications system |
US7142838B2 (en) | 1993-07-15 | 2006-11-28 | Micron Technology, Inc. | Wake up device for a communications system |
US7912442B2 (en) | 1993-07-15 | 2011-03-22 | Round Rock Research, Llc | Wake up device for communications system |
US7912443B2 (en) | 1993-07-15 | 2011-03-22 | Round Rock Research, Llc | Wake up device for communications system and methods |
US6760578B2 (en) | 1993-07-15 | 2004-07-06 | Micron Technology, Inc. | Wake up device for a communications system |
US8565712B2 (en) | 1993-07-15 | 2013-10-22 | Round Rock Research, Llc | Wake up device for communications system and methods |
EP0655872A3 (en) * | 1993-11-26 | 1997-12-29 | Nokia Mobile Phones Ltd. | Paging message processing |
EP0655872A2 (en) * | 1993-11-26 | 1995-05-31 | Nokia Mobile Phones Ltd. | Paging message processing |
GB2284728B (en) * | 1993-12-10 | 1998-03-04 | Motorola Inc | Low power addressable data communication device and method |
US5606313A (en) * | 1993-12-10 | 1997-02-25 | Motorola, Inc. | Low power addressable data communication device and method |
GB2284728A (en) * | 1993-12-10 | 1995-06-14 | Motorola Inc | Low power, addressable data communications device |
US7092369B2 (en) | 1995-11-17 | 2006-08-15 | Symbol Technologies, Inc. | Communications network with wireless gateways for mobile terminal access |
EP0820153A3 (en) * | 1996-06-18 | 2000-12-06 | Nec Corporation | Radio selective calling receiver |
EP0820153A2 (en) * | 1996-06-18 | 1998-01-21 | Nec Corporation | Radio selective calling receiver |
EP0939495A1 (en) * | 1998-02-26 | 1999-09-01 | Motorola Semiconducteurs S.A. | Power saving for a electronic devices |
WO2000019622A1 (en) * | 1998-09-28 | 2000-04-06 | Sony Computer Entertainment Inc. | Method and apparatus for transceiving, receiving as well as transmitting |
US6480150B2 (en) | 1999-09-17 | 2002-11-12 | Sirf Technology, Inc. | Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver |
US6671620B1 (en) | 2000-05-18 | 2003-12-30 | Sirf Technology, Inc. | Method and apparatus for determining global position using almanac information |
US6389291B1 (en) | 2000-08-14 | 2002-05-14 | Sirf Technology | Multi-mode global positioning system for use with wireless networks |
US6519466B2 (en) | 2000-08-14 | 2003-02-11 | Sirf Technology, Inc. | Multi-mode global positioning system for use with wireless networks |
US6542823B2 (en) | 2000-08-14 | 2003-04-01 | Sirf Technology, Inc. | Information transfer in a multi-mode global positioning system used with wireless networks |
US7197305B2 (en) | 2000-08-24 | 2007-03-27 | Sirf Technology, Inc. | Apparatus for reducing auto-correlation or cross-correlation in weak CDMA signals |
US6707423B2 (en) | 2000-08-24 | 2004-03-16 | Sirf Technology, Inc. | Location services system that reduces auto-correlation or cross-correlation in weak signals |
US6466161B2 (en) | 2000-08-24 | 2002-10-15 | Sirf Technology, Inc. | Location services system that reduces auto-correlation or cross-correlation in weak signals |
US6680695B2 (en) | 2000-08-24 | 2004-01-20 | Sirf Technology, Inc. | Communications system that reduces auto-correlation or cross-correlation in weak signals |
US7047023B1 (en) | 2000-12-01 | 2006-05-16 | Sirf Technology, Inc. | GPS RF front end IC with frequency plan for improved integrability |
US7747236B1 (en) | 2000-12-11 | 2010-06-29 | Sirf Technology, Inc. | Method and apparatus for estimating local oscillator frequency for GPS receivers |
US7113552B1 (en) | 2000-12-21 | 2006-09-26 | Sirf Technology, Inc. | Phase sampling techniques using amplitude bits for digital receivers |
US6680703B1 (en) | 2001-02-16 | 2004-01-20 | Sirf Technology, Inc. | Method and apparatus for optimally tuning a circularly polarized patch antenna after installation |
US6703971B2 (en) | 2001-02-21 | 2004-03-09 | Sirf Technologies, Inc. | Mode determination for mobile GPS terminals |
US6462708B1 (en) | 2001-04-05 | 2002-10-08 | Sirf Technology, Inc. | GPS-based positioning system for mobile GPS terminals |
US7986952B2 (en) | 2001-04-16 | 2011-07-26 | Sirf Technology Inc. | Method and apparatus for transmitting position data using control channels in wireless networks |
US7076256B1 (en) | 2001-04-16 | 2006-07-11 | Sirf Technology, Inc. | Method and apparatus for transmitting position data using control channels in wireless networks |
US7925210B2 (en) | 2001-05-21 | 2011-04-12 | Sirf Technology, Inc. | Synchronizing a radio network with end user radio terminals |
US7877104B2 (en) | 2001-05-21 | 2011-01-25 | Sirf Technology Inc. | Method for synchronizing a radio network using end user radio terminals |
US8947300B2 (en) | 2003-09-02 | 2015-02-03 | Csr Technology Inc. | Control and features for satellite positioning system receivers |
US9869770B2 (en) | 2003-09-02 | 2018-01-16 | Qualcomm Incorporated | Control and features for satellite positioning system receivers |
EP1772977A3 (en) * | 2005-10-06 | 2010-11-24 | Broadcom Corporation | Mobile communication device with low power signal detector |
US8532718B2 (en) | 2005-10-06 | 2013-09-10 | Broadcom Corporation | Mobile communication device with low power signal detector |
EP1772977A2 (en) * | 2005-10-06 | 2007-04-11 | Broadcom Corporation | Mobile communication device with low power signal detector |
US8892177B2 (en) | 2005-10-06 | 2014-11-18 | Broadcom Corporation | Mobile communication device with low power signal detector |
EP2056530A4 (en) * | 2006-09-06 | 2009-10-14 | China Mobile Comm Corp | Saving electricity information home electric network and saving electricity controlling method |
EP2056530A1 (en) * | 2006-09-06 | 2009-05-06 | China Mobile Communications Corporation | Saving electricity information home electric network and saving electricity controlling method |
WO2008040206A1 (en) | 2006-09-06 | 2008-04-10 | China Mobile Communications Corporation | Saving electricity information home electric network and saving electricity controlling method |
WO2012067968A1 (en) * | 2010-11-15 | 2012-05-24 | Qualcomm Incorporated | Power conservation in wireless access terminals using integrated proxy function |
US8442475B2 (en) | 2010-11-15 | 2013-05-14 | Qualcomm Incorporated | Power conservation in wireless access terminals using integrated proxy function |
Also Published As
Publication number | Publication date |
---|---|
KR920700497A (en) | 1992-02-19 |
EP0463104A4 (en) | 1993-01-13 |
CA2045519A1 (en) | 1990-09-21 |
EP0463104A1 (en) | 1992-01-02 |
KR950000050B1 (en) | 1995-01-07 |
CA2045519C (en) | 1994-11-08 |
JPH04504340A (en) | 1992-07-30 |
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