CA2102114A1 - Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system - Google Patents

Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system

Info

Publication number
CA2102114A1
CA2102114A1 CA002102114A CA2102114A CA2102114A1 CA 2102114 A1 CA2102114 A1 CA 2102114A1 CA 002102114 A CA002102114 A CA 002102114A CA 2102114 A CA2102114 A CA 2102114A CA 2102114 A1 CA2102114 A1 CA 2102114A1
Authority
CA
Canada
Prior art keywords
cell
power
site
mobile unit
transmitter
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
CA002102114A
Other languages
French (fr)
Other versions
CA2102114C (en
Inventor
Klein S. Gilhousen
Roberto Padovani
Charles E. Wheatley, Iii
Lindsay A. Weaver, Jr.
Robert D. Ii Blakeney
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
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2102114A1 publication Critical patent/CA2102114A1/en
Application granted granted Critical
Publication of CA2102114C publication Critical patent/CA2102114C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/40TPC being performed in particular situations during macro-diversity or soft handoff
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/005Control of transmission; Equalising
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/08Closed loop power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/10Open loop power control
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

A power control system for a cellular mobile telephone system in which system users communicate information sig-nals between one another via at least one cell-site using code division multiple access spread spectrum communication sig-nals. The power control system controls transmission signal power for each cellular mobile telephone (16, 18) in the cellu-lar mobile telephone system wherein each cellular mobile telephone (16, 18) has an antenna, transmitter and receiver and each cell-site (12, 14) also has an antenna, transmitter and receiver. Cell-site transmitted signal power is measured as received at the mobile unit. Transmitter power is adjusted at the mobile unit in an opposite manner with respect to in-creases and decreases in received signal power. A power con-trol feedback scheme may also be utilized. At the cell-site communicating with the mobile unit, the mobile unit trans-mitted power is measured as received at the cell-site. A com-mand signal is generated at the cell-site and transmitted to the mobile unit for further adjusting mobile unit transmitter power corresponding to deviations in the cell-site received signal power. The feedback scheme is used to further adjust the mobile unit transmitter power corresponding to devia-tions in the cell-site received signal power. The feedback scheme is used to further adjust the mobile unit transmitter power so that mobile unit transmitted signals arrive at the cell-site at a desired power level. In a cell diversity situation, the mobile units transmitter power is adjusted to prevent un-necessary increases in mobile unit transmitter power level.
CA 2102114 1991-05-17 1992-05-17 Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system Expired - Lifetime CA2102114C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/702,029 US5265119A (en) 1989-11-07 1991-05-17 Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system
US702,029 1991-05-17
PCT/US1992/004161 WO1992021196A1 (en) 1991-05-17 1992-05-17 Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system

Publications (2)

Publication Number Publication Date
CA2102114A1 true CA2102114A1 (en) 1992-11-18
CA2102114C CA2102114C (en) 2002-01-22

Family

ID=24819600

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2102114 Expired - Lifetime CA2102114C (en) 1991-05-17 1992-05-17 Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system

Country Status (17)

Country Link
US (1) US5265119A (en)
EP (3) EP0584241B1 (en)
JP (1) JP3014757B2 (en)
AT (2) ATE434869T1 (en)
AU (1) AU653039B2 (en)
CA (1) CA2102114C (en)
DE (2) DE69233552T2 (en)
DK (1) DK0584241T3 (en)
ES (2) ES2327094T3 (en)
FI (3) FI118364B (en)
HK (2) HK1016422A1 (en)
HU (1) HU215857B (en)
NO (3) NO309219B1 (en)
RU (1) RU2127951C1 (en)
SG (1) SG48018A1 (en)
UA (1) UA42677C2 (en)
WO (1) WO1992021196A1 (en)

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