CA2209729A1 - Method of controlling power on forward link in a cellular cdma system - Google Patents

Method of controlling power on forward link in a cellular cdma system

Info

Publication number
CA2209729A1
CA2209729A1 CA002209729A CA2209729A CA2209729A1 CA 2209729 A1 CA2209729 A1 CA 2209729A1 CA 002209729 A CA002209729 A CA 002209729A CA 2209729 A CA2209729 A CA 2209729A CA 2209729 A1 CA2209729 A1 CA 2209729A1
Authority
CA
Canada
Prior art keywords
base station
power
base stations
mobile unit
pilot
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
CA002209729A
Other languages
French (fr)
Other versions
CA2209729C (en
Inventor
Kojiro Hamabe
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 Corp
Original Assignee
NEC Corp
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 Corp filed Critical NEC Corp
Publication of CA2209729A1 publication Critical patent/CA2209729A1/en
Application granted granted Critical
Publication of CA2209729C publication Critical patent/CA2209729C/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
    • 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
    • H04W52/30—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
    • H04W52/38—TPC being performed in particular situations
    • H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff

Abstract

A method of controlling transmission power of a plurality of base stations associated with a mobile unit in a CDMA (code division multiple access) cellular system, is disclosed. The mobile unit communicates with one base station among the plurality of base stations. According to the present invention, power of each of pilot signals respectively transmitted from the plurality of base stations is measured at the mobile unit. Following this, information about a measured power value of each of the pilot signals is transmitted to the one base station. Thereafter, a first power control coefficient is determined at the one base station. The coefficient is a ratio of total pilot power values of the plurality of base stations, other than the main base station, to a pilot power value of the one base station. Subsequently, the transmission power of each of the plurality of base stations using the first power control coefficient is controlled.
CA 2209729 1996-07-05 1997-07-07 Method of controlling power on forward link in a cellular cdma system Expired - Fee Related CA2209729C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8-176754 1996-07-05
JP17675496A JP2839014B2 (en) 1996-07-05 1996-07-05 Transmission power control method for code division multiplexing cellular system

Publications (2)

Publication Number Publication Date
CA2209729A1 true CA2209729A1 (en) 1998-01-05
CA2209729C CA2209729C (en) 2001-05-01

Family

ID=16019233

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2209729 Expired - Fee Related CA2209729C (en) 1996-07-05 1997-07-07 Method of controlling power on forward link in a cellular cdma system

Country Status (7)

Country Link
US (1) US6026081A (en)
EP (1) EP0817400B1 (en)
JP (1) JP2839014B2 (en)
KR (1) KR100308219B1 (en)
AU (1) AU716425B2 (en)
CA (1) CA2209729C (en)
DE (1) DE69731332T2 (en)

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Also Published As

Publication number Publication date
EP0817400A3 (en) 2003-04-02
AU2849697A (en) 1998-01-15
CA2209729C (en) 2001-05-01
AU716425B2 (en) 2000-02-24
US6026081A (en) 2000-02-15
DE69731332D1 (en) 2004-12-02
JPH1022975A (en) 1998-01-23
EP0817400B1 (en) 2004-10-27
EP0817400A2 (en) 1998-01-07
KR980013052A (en) 1998-04-30
KR100308219B1 (en) 2001-11-30
JP2839014B2 (en) 1998-12-16
DE69731332T2 (en) 2005-03-17

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