CA2323585A1 - Adaptive reacquisition time in a slotted paging environment - Google Patents

Adaptive reacquisition time in a slotted paging environment Download PDF

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Publication number
CA2323585A1
CA2323585A1 CA002323585A CA2323585A CA2323585A1 CA 2323585 A1 CA2323585 A1 CA 2323585A1 CA 002323585 A CA002323585 A CA 002323585A CA 2323585 A CA2323585 A CA 2323585A CA 2323585 A1 CA2323585 A1 CA 2323585A1
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CA
Canada
Prior art keywords
reacquisition time
reacquisition
time
pilot signal
shift
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
CA002323585A
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French (fr)
Other versions
CA2323585C (en
Inventor
Gwain Bayley
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.)
Qualcomm Inc
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2323585A1 publication Critical patent/CA2323585A1/en
Application granted granted Critical
Publication of CA2323585C publication Critical patent/CA2323585C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • 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
    • H04B1/76—Pilot transmitters or receivers for control of transmission or for equalising
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70756—Jumping within the code, i.e. masking or slewing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70707—Efficiency-related aspects
    • 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 circuit for adaptively determining a pilot signal reacquisition time. A searcher subsystem (55) measures a phase of the pilot signal. A control processor (62) measures a magnitude of a shift in the pilot signal phase, compares the measured magnitude to a shift threshold, and decreases the reacquisition time if the measured magnitude is not greater than the shift threshold. The control processor (62) also may compare the reacquisition time to a minimum reacquisition time, and decrease the reacquisition time only if the reacquisition time is greater than the minimum reacquisition time. Additionally, the control processor (62) may increase the reacquisition time to a maximum reacquisition time if the measured magnitude is greater than said shift threshold.

Claims (8)

1. A method for adaptively determining a pilot signal reacquisition time, the method comprising the steps of:
measuring a magnitude of a shift in phase of said pilot signal;
comparing said measured magnitude to a shift threshold; and decreasing said reacquisition time if said measured magnitude is not greater than said shift threshold.
2. The method of claim 1 further comprising the steps of:
comparing said reacquisition time to a minimum reacquisition time;
and decreasing said reacquisition time only if said reacquisition time is greater than said minimum reacquisition time.
3. The method of claim 2 further comprising the step of increasing said reacquisition time to a maximum reacquisition time if said measured magnitude is greater than said shift threshold.
4. The method of claim 3 further comprising the step of entering a sleep mode until said reacquisition time before a next assigned paging slot.
5. A circuit for adaptively determining a pilot signal reacquisition time, comprising:
a searcher subsystem for measuring a phase of said pilot signal; and a control processor for measuring a magnitude of a shift in said pilot signal phase, and wherein said control processor compares said measured magnitude to a shift threshold, and decreases said reacquisition time if said measured magnitude is not greater than said shift threshold.
6. The circuit of claim 5 wherein said control processor compares said reacquisition time to a minimum reacquisition time, and decreases said reacquisition time only if said reacquisition time is greater than said minimum reacquisition time.
7. The circuit of claim 6 wherein said control processor increases said reacquisition time to a maximum reacquisition time if said measured magnitude is greater than said shift threshold.
8. The circuit of claim 7 wherein said circuit enters a sleep mode until said reacquisition time before a next assigned paging slot.
CA2323585A 1998-03-16 1999-03-16 Adaptive reacquisition time in a slotted paging environment Expired - Fee Related CA2323585C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/039,985 1998-03-16
US09/039,985 US6101173A (en) 1998-03-16 1998-03-16 Adaptive reacquisition time in a slotted paging environment
PCT/US1999/005782 WO1999048221A1 (en) 1998-03-16 1999-03-16 Adaptive reacquisition time in a slotted paging environment

Publications (2)

Publication Number Publication Date
CA2323585A1 true CA2323585A1 (en) 1999-09-23
CA2323585C CA2323585C (en) 2010-07-20

Family

ID=21908452

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2323585A Expired - Fee Related CA2323585C (en) 1998-03-16 1999-03-16 Adaptive reacquisition time in a slotted paging environment

Country Status (16)

Country Link
US (1) US6101173A (en)
EP (1) EP1064731B1 (en)
JP (1) JP2002507854A (en)
KR (1) KR20010041747A (en)
CN (1) CN1130033C (en)
AU (1) AU748928B2 (en)
BR (1) BR9908818A (en)
CA (1) CA2323585C (en)
DE (1) DE69927140T2 (en)
ES (1) ES2252937T3 (en)
HK (1) HK1034008A1 (en)
IL (2) IL138090A0 (en)
MX (1) MXPA00008991A (en)
RU (1) RU2226742C2 (en)
TW (1) TW437193B (en)
WO (1) WO1999048221A1 (en)

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KR20140046045A (en) * 2011-08-16 2014-04-17 후지쯔 가부시끼가이샤 Power control method, base station and terminal equipment
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Also Published As

Publication number Publication date
RU2226742C2 (en) 2004-04-10
MXPA00008991A (en) 2003-07-14
AU748928B2 (en) 2002-06-13
CN1130033C (en) 2003-12-03
CA2323585C (en) 2010-07-20
KR20010041747A (en) 2001-05-25
JP2002507854A (en) 2002-03-12
ES2252937T3 (en) 2006-05-16
TW437193B (en) 2001-05-28
IL138090A (en) 2007-06-03
DE69927140T2 (en) 2006-06-22
EP1064731A1 (en) 2001-01-03
AU3008199A (en) 1999-10-11
BR9908818A (en) 2000-12-12
US6101173A (en) 2000-08-08
CN1293839A (en) 2001-05-02
HK1034008A1 (en) 2001-10-05
DE69927140D1 (en) 2005-10-13
WO1999048221A1 (en) 1999-09-23
IL138090A0 (en) 2001-10-31
EP1064731B1 (en) 2005-09-07

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