WO1998059433A3 - Method and apparatus for downlink power control in macro diversity radio systems - Google Patents

Method and apparatus for downlink power control in macro diversity radio systems Download PDF

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Publication number
WO1998059433A3
WO1998059433A3 PCT/SE1998/001169 SE9801169W WO9859433A3 WO 1998059433 A3 WO1998059433 A3 WO 1998059433A3 SE 9801169 W SE9801169 W SE 9801169W WO 9859433 A3 WO9859433 A3 WO 9859433A3
Authority
WO
WIPO (PCT)
Prior art keywords
downlink
macro diversity
downlink power
diversity radio
power control
Prior art date
Application number
PCT/SE1998/001169
Other languages
French (fr)
Other versions
WO1998059433A2 (en
Inventor
Magnus Almgren
Magnus Frodigh
Mikael Gudmundson
Fredric Kronestedt
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to DE69841958T priority Critical patent/DE69841958D1/en
Priority to AU79488/98A priority patent/AU7948898A/en
Priority to CA002295085A priority patent/CA2295085C/en
Priority to EP98930004A priority patent/EP0997008B1/en
Priority to JP50429799A priority patent/JP4138028B2/en
Publication of WO1998059433A2 publication Critical patent/WO1998059433A2/en
Publication of WO1998059433A3 publication Critical patent/WO1998059433A3/en

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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
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
    • 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
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • 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
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
    • 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
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff

Abstract

A method and apparatus for controlling an amount of downlink power to be applied in each downlink transmission in a macro diversity radio system. Downlink power level is controlled in response to a quality measurement of a corresponding uplink. In accordance with exemplary embodiments, a path gain or a carrier-to-interference ratio of an uplink is measured at a base station in an active set, and subsequently used to proportionally govern a downlink transmission power level for a corresponding downlink. In such a fashion, each downlink handling a mobile station maintains a desired level of robustness, while avoiding introduction of unnecessary system interference.
PCT/SE1998/001169 1997-06-23 1998-06-16 Method and apparatus for downlink power control in macro diversity radio systems WO1998059433A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE69841958T DE69841958D1 (en) 1997-06-23 1998-06-16 METHOD AND DEVICE FOR POWER CONTROL OF DOWNWARD DIRECTION IN WIRELESS SYSTEMS WITH MACRODIVERSITY
AU79488/98A AU7948898A (en) 1997-06-23 1998-06-16 Method and apparatus for downlink power control in macro diversity radio systems
CA002295085A CA2295085C (en) 1997-06-23 1998-06-16 Method and apparatus for downlink power control in macro diversity radio systems
EP98930004A EP0997008B1 (en) 1997-06-23 1998-06-16 Method and apparatus for downlink power control in macro diversity radio systems
JP50429799A JP4138028B2 (en) 1997-06-23 1998-06-16 Downlink power control method and apparatus in macro diversity radio system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/880,746 1997-06-23
US08/880,746 US6104933A (en) 1997-06-23 1997-06-23 Method and apparatus for control of base stations in macro diversity radio systems

Publications (2)

Publication Number Publication Date
WO1998059433A2 WO1998059433A2 (en) 1998-12-30
WO1998059433A3 true WO1998059433A3 (en) 1999-07-08

Family

ID=25376983

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1998/001169 WO1998059433A2 (en) 1997-06-23 1998-06-16 Method and apparatus for downlink power control in macro diversity radio systems

Country Status (8)

Country Link
US (1) US6104933A (en)
EP (1) EP0997008B1 (en)
JP (1) JP4138028B2 (en)
AU (1) AU7948898A (en)
CA (1) CA2295085C (en)
DE (1) DE69841958D1 (en)
TW (1) TW387176B (en)
WO (1) WO1998059433A2 (en)

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Publication number Priority date Publication date Assignee Title
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Also Published As

Publication number Publication date
US6104933A (en) 2000-08-15
AU7948898A (en) 1999-01-04
DE69841958D1 (en) 2010-12-02
TW387176B (en) 2000-04-11
CA2295085A1 (en) 1998-12-30
EP0997008B1 (en) 2010-10-20
CA2295085C (en) 2007-01-09
EP0997008A2 (en) 2000-05-03
JP4138028B2 (en) 2008-08-20
JP2002505819A (en) 2002-02-19
WO1998059433A2 (en) 1998-12-30

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