GB2409950B - Power saving mobile communication devices - Google Patents

Power saving mobile communication devices

Info

Publication number
GB2409950B
GB2409950B GB0400261A GB0400261A GB2409950B GB 2409950 B GB2409950 B GB 2409950B GB 0400261 A GB0400261 A GB 0400261A GB 0400261 A GB0400261 A GB 0400261A GB 2409950 B GB2409950 B GB 2409950B
Authority
GB
United Kingdom
Prior art keywords
location
mobile communication
communication devices
power saving
derived
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.)
Expired - Fee Related
Application number
GB0400261A
Other versions
GB0400261D0 (en
GB2409950A (en
Inventor
Richard Ormson
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.)
NEC Technologies UK Ltd
Original Assignee
NEC Technologies UK Ltd
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 NEC Technologies UK Ltd filed Critical NEC Technologies UK Ltd
Priority to GB0400261A priority Critical patent/GB2409950B/en
Publication of GB0400261D0 publication Critical patent/GB0400261D0/en
Publication of GB2409950A publication Critical patent/GB2409950A/en
Application granted granted Critical
Publication of GB2409950B publication Critical patent/GB2409950B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
    • G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
    • G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
    • G01C21/165—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G01S11/10—Systems for determining distance or velocity not using reflection or reradiation using radio waves using Doppler effect
    • H04Q7/3855—
    • H04Q7/3247—
    • 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
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • 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
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • 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

Abstract

A method and apparatus are provided for determining the location of a mobile communication device. The location is derived using a location deriving system. The velocity is then derived, preferably using a Doppler shift measured on signals included in the system in which the mobile device operates. A new location is then derived from the original location and the velocity signal. By reducing the amount of location readings taken, battery power is conserved.
GB0400261A 2004-01-07 2004-01-07 Power saving mobile communication devices Expired - Fee Related GB2409950B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0400261A GB2409950B (en) 2004-01-07 2004-01-07 Power saving mobile communication devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0400261A GB2409950B (en) 2004-01-07 2004-01-07 Power saving mobile communication devices

Publications (3)

Publication Number Publication Date
GB0400261D0 GB0400261D0 (en) 2004-02-11
GB2409950A GB2409950A (en) 2005-07-13
GB2409950B true GB2409950B (en) 2006-04-26

Family

ID=31503531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0400261A Expired - Fee Related GB2409950B (en) 2004-01-07 2004-01-07 Power saving mobile communication devices

Country Status (1)

Country Link
GB (1) GB2409950B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8498804B2 (en) 2007-01-10 2013-07-30 Tomtom International B.V. Navigation device and method for conserving power
EP2100098B1 (en) * 2007-01-10 2016-04-13 TomTom International B.V. Navigation device and method for driving break warning

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2329801A (en) * 1996-03-22 1999-03-31 Matsushita Electric Ind Co Ltd System for the detection of the position of a radio mobile station
KR20010038991A (en) * 1999-10-28 2001-05-15 서평원 Terminal Location Searching Method in Radio Communication Method
JP2002071376A (en) * 2000-08-25 2002-03-08 Hitachi Kokusai Electric Inc Portable terminal
GB2388749A (en) * 2002-05-17 2003-11-19 Nec Technologies Method and system for determining velocity of a mobile radiotelecommunications device including determining frequency difference due to doppler shift

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2329801A (en) * 1996-03-22 1999-03-31 Matsushita Electric Ind Co Ltd System for the detection of the position of a radio mobile station
KR20010038991A (en) * 1999-10-28 2001-05-15 서평원 Terminal Location Searching Method in Radio Communication Method
JP2002071376A (en) * 2000-08-25 2002-03-08 Hitachi Kokusai Electric Inc Portable terminal
GB2388749A (en) * 2002-05-17 2003-11-19 Nec Technologies Method and system for determining velocity of a mobile radiotelecommunications device including determining frequency difference due to doppler shift

Also Published As

Publication number Publication date
GB0400261D0 (en) 2004-02-11
GB2409950A (en) 2005-07-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090107