CA2239201A1 - Mobile station and a method of reducing interference among radio channels in the mobile station - Google Patents

Mobile station and a method of reducing interference among radio channels in the mobile station

Info

Publication number
CA2239201A1
CA2239201A1 CA002239201A CA2239201A CA2239201A1 CA 2239201 A1 CA2239201 A1 CA 2239201A1 CA 002239201 A CA002239201 A CA 002239201A CA 2239201 A CA2239201 A CA 2239201A CA 2239201 A1 CA2239201 A1 CA 2239201A1
Authority
CA
Canada
Prior art keywords
mobile station
group
base stations
transmission power
radio channels
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
CA002239201A
Other languages
French (fr)
Other versions
CA2239201C (en
Inventor
Shousei Yoshida
Akihisa Ushirokawa
Hiroshi Furukawa
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 CA2239201A1 publication Critical patent/CA2239201A1/en
Application granted granted Critical
Publication of CA2239201C publication Critical patent/CA2239201C/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
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • 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
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/362—Aspects of the step size
    • 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

In a method of controlling transmission power in a mobile station which switches a plurality of base stations from one to another with a hand-off time interposed on switching, an increase of the transmission power is suppressed with reference to reception levels of pilot signals sent from the plurality of the base stations which are divided into a first group of base stations under connection and a second group of base stations under non-connection. Specifically, the transmission power is slowly or gradually increased or kept constant when the reception level of the pilot signal sent from the second group base station exceeds that of the pilot signal sent from the first group base station.
CA002239201A 1997-08-12 1998-05-29 Mobile station and a method of reducing interference among radio channels in the mobile station Expired - Fee Related CA2239201C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP228976/1997 1997-08-12
JP22897697 1997-08-12

Publications (2)

Publication Number Publication Date
CA2239201A1 true CA2239201A1 (en) 1999-02-12
CA2239201C CA2239201C (en) 2003-08-05

Family

ID=16884829

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002239201A Expired - Fee Related CA2239201C (en) 1997-08-12 1998-05-29 Mobile station and a method of reducing interference among radio channels in the mobile station

Country Status (4)

Country Link
US (1) US6418320B2 (en)
EP (2) EP1286479B1 (en)
CA (1) CA2239201C (en)
DE (2) DE69833336T2 (en)

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US6628958B1 (en) * 1999-09-15 2003-09-30 Lucent Technologies Inc. Method for adjusting the transmit power level during soft handoff in wireless communication systems
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GB9927995D0 (en) * 1999-11-27 2000-01-26 Koninkl Philips Electronics Nv Method for conformance testing of radio communication equipment
US6862457B1 (en) * 2000-06-21 2005-03-01 Qualcomm Incorporated Method and apparatus for adaptive reverse link power control using mobility profiles
CN1157880C (en) * 2000-09-25 2004-07-14 华为技术有限公司 Multiple time interval power control method
GB0100991D0 (en) * 2001-01-13 2001-02-28 Koninkl Philips Electronics Nv Radio communication system
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US7277721B2 (en) 2001-07-24 2007-10-02 Ntt Docomo, Inc. Transmission power control apparatus and method in a mobile communication system, mobile station, and communication apparatus
KR100915275B1 (en) * 2001-11-05 2009-09-03 가부시키가이샤 히타치세이사쿠쇼 Wireless communication system and communication control method therefor and wireless communication station
CA2372060A1 (en) * 2002-02-14 2003-08-14 Raymond Berthiaume Guide for cutting at complex angles
US7630321B2 (en) 2002-09-10 2009-12-08 Qualcomm Incorporated System and method for rate assignment
US8504054B2 (en) 2002-09-10 2013-08-06 Qualcomm Incorporated System and method for multilevel scheduling
CN101553027B (en) * 2002-09-10 2013-05-22 高通股份有限公司 A system and a method for rate allocation
US6748235B1 (en) * 2002-11-12 2004-06-08 Interdigital Technology Corporation Power control during a transmission pause
US8165148B2 (en) * 2003-01-13 2012-04-24 Qualcomm Incorporated System and method for rate assignment
US6944142B2 (en) * 2003-05-13 2005-09-13 Interdigital Technology Corporation Method for soft and softer handover in time division duplex code division multiple access (TDD-CDMA) networks
US7551637B2 (en) * 2004-01-23 2009-06-23 Qualcomm Incorporated Method and apparatus for channel sensitive scheduling in a communication system
US7197692B2 (en) 2004-06-18 2007-03-27 Qualcomm Incorporated Robust erasure detection and erasure-rate-based closed loop power control
US7594151B2 (en) 2004-06-18 2009-09-22 Qualcomm, Incorporated Reverse link power control in an orthogonal system
US8452316B2 (en) * 2004-06-18 2013-05-28 Qualcomm Incorporated Power control for a wireless communication system utilizing orthogonal multiplexing
JP2006115410A (en) * 2004-10-18 2006-04-27 Matsushita Electric Ind Co Ltd Base station apparatus, mobile station apparatus and transmission rate control method
EP1672939B1 (en) * 2004-12-16 2011-09-28 TELEFONAKTIEBOLAGET LM ERICSSON (publ) User controlled transmit power control during handover in a CDMA system
US8848574B2 (en) 2005-03-15 2014-09-30 Qualcomm Incorporated Interference control in a wireless communication system
US8942639B2 (en) 2005-03-15 2015-01-27 Qualcomm Incorporated Interference control in a wireless communication system
CN100375405C (en) * 2005-05-20 2008-03-12 北京首信股份有限公司 Inverse external external ring power controlling method for CDMA mobile communication system
EP1941638A2 (en) 2005-10-27 2008-07-09 Qualcomm Incorporated Method and apparatus for estimating reverse link loading in a wireless communication system
US20070280377A1 (en) * 2006-06-02 2007-12-06 Rucki John S Apparatus and method for controlling the output power of a transmitter using a pilot channel power level
US8442572B2 (en) 2006-09-08 2013-05-14 Qualcomm Incorporated Method and apparatus for adjustments for delta-based power control in wireless communication systems
US8670777B2 (en) 2006-09-08 2014-03-11 Qualcomm Incorporated Method and apparatus for fast other sector interference (OSI) adjustment
JP4929192B2 (en) * 2008-01-21 2012-05-09 株式会社日立製作所 Wireless communication system and soft handoff control method in wireless communication system
US8611942B2 (en) * 2008-08-18 2013-12-17 Qualcomm Incorporated Handling of MAC-hs/ehs reset in enhanced serving cell change
US20120282889A1 (en) * 2010-01-12 2012-11-08 Sumitomo Electric Industries, Ltd Base station device
KR101924830B1 (en) * 2012-06-19 2019-02-27 삼성전자주식회사 Method and apparatus for synchronizing of terminal in wireless communication network
JP6015195B2 (en) * 2012-07-25 2016-10-26 富士通株式会社 Communication apparatus and transmission power control method

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Also Published As

Publication number Publication date
US6418320B2 (en) 2002-07-09
EP0897225A3 (en) 2001-07-18
DE69817950D1 (en) 2003-10-16
EP1286479A2 (en) 2003-02-26
EP1286479A3 (en) 2004-07-14
DE69833336D1 (en) 2006-04-13
DE69833336T2 (en) 2006-08-03
DE69817950T2 (en) 2004-05-13
US20010055968A1 (en) 2001-12-27
EP0897225B1 (en) 2003-09-10
CA2239201C (en) 2003-08-05
EP0897225A2 (en) 1999-02-17
EP1286479B1 (en) 2006-02-01

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Legal Events

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EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20120529