TW527841B - Adaptive handoff algorithms for mobiles operating in CDMA systems - Google Patents

Adaptive handoff algorithms for mobiles operating in CDMA systems Download PDF

Info

Publication number
TW527841B
TW527841B TW089104151A TW89104151A TW527841B TW 527841 B TW527841 B TW 527841B TW 089104151 A TW089104151 A TW 089104151A TW 89104151 A TW89104151 A TW 89104151A TW 527841 B TW527841 B TW 527841B
Authority
TW
Taiwan
Prior art keywords
handover
mobile station
mobile
interference
downlink
Prior art date
Application number
TW089104151A
Other languages
English (en)
Chinese (zh)
Inventor
Eddie Corbett
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
Application granted granted Critical
Publication of TW527841B publication Critical patent/TW527841B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
TW089104151A 1999-03-11 2000-03-08 Adaptive handoff algorithms for mobiles operating in CDMA systems TW527841B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/265,969 US6504828B1 (en) 1999-03-11 1999-03-11 Adaptive handoff algorithms for mobiles operating in CDMA systems

Publications (1)

Publication Number Publication Date
TW527841B true TW527841B (en) 2003-04-11

Family

ID=23012637

Family Applications (1)

Application Number Title Priority Date Filing Date
TW089104151A TW527841B (en) 1999-03-11 2000-03-08 Adaptive handoff algorithms for mobiles operating in CDMA systems

Country Status (13)

Country Link
US (1) US6504828B1 (enExample)
EP (1) EP1159841B1 (enExample)
JP (1) JP4611536B2 (enExample)
KR (1) KR100651101B1 (enExample)
CN (1) CN1158892C (enExample)
AR (1) AR022910A1 (enExample)
AT (1) ATE305712T1 (enExample)
AU (1) AU769999B2 (enExample)
DE (1) DE60022862T2 (enExample)
ES (1) ES2249248T3 (enExample)
MY (1) MY120381A (enExample)
TW (1) TW527841B (enExample)
WO (1) WO2000054540A1 (enExample)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6968190B1 (en) * 1999-11-29 2005-11-22 Nokia Mobile Phones, Ltd. Transfer of optimization algorithm parameters during handover of a mobile station between radio network subsystems
GB0011913D0 (en) 2000-05-17 2000-07-05 Nokia Networks Oy Connections in a communication system
CN1159931C (zh) * 2000-10-02 2004-07-28 株式会社Ntt都科摩 移动通信系统、基站移动站和移动通信控制方法
US7062273B2 (en) 2000-12-25 2006-06-13 Kabushiki Kaisha Toshiba Mobile communication terminal apparatus having an array antenna for communication to at least one base station
IL159361A0 (en) 2001-06-26 2004-06-01 Qualcomm Inc Method and apparatus for adaptive server selection in a data communication system
US6757520B2 (en) * 2001-06-26 2004-06-29 Qualcomm Incorporated Method and apparatus for selecting a serving sector in a data communication system
US7058035B2 (en) 2001-06-29 2006-06-06 Qualcomm, Indorporated Communication system employing multiple handoff criteria
KR100440201B1 (ko) * 2001-08-31 2004-07-12 유티스타콤코리아 유한회사 아이엠티-2000 무선망에서 적응 핸드오버 방법
US7003298B1 (en) * 2002-02-28 2006-02-21 Cisco Technology, Inc. Devices, softwares and methods for handing off live calls between legs of CSV and VOX modalities
US20030224730A1 (en) * 2002-04-29 2003-12-04 Peter Muszynski Method and apparatus for selection of downlink carriers in a cellular system using multiple downlink carriers
US7424296B2 (en) * 2002-04-29 2008-09-09 Nokia Corporation Method and apparatus for soft handover area detection for uplink interference avoidance
US7853260B2 (en) * 2002-04-29 2010-12-14 Nokia Corporation Method and apparatus for cell identification for uplink interference avoidance using inter-frequency measurements
US20030224733A1 (en) * 2002-04-29 2003-12-04 Uwe Schwarz Method and apparatus for estimating signal quality for uplink interference avoidance
US20040047312A1 (en) * 2002-04-29 2004-03-11 Peter Muszynski Method and apparatus for UL interference avoidance by DL measurements and IFHO
US20040022217A1 (en) * 2002-04-29 2004-02-05 Sari Korpela Method and apparatus for soft handover area detection using inter-band measurements
US6681112B1 (en) * 2002-04-29 2004-01-20 Nokia Corporation Handovers of user equipment connections in wireless communications systems
US7525948B2 (en) * 2002-04-29 2009-04-28 Nokia Corporation Method and apparatus for utilizing synchronization information
US6993332B2 (en) * 2002-06-05 2006-01-31 Nokia Corporation Method of performing handover by using different handover parameters for different traffic and user classes in a communication network
US8200747B2 (en) * 2002-07-12 2012-06-12 Hewlett-Packard Development Company, L.P. Session handoff of segmented media data
US7123917B2 (en) * 2002-12-17 2006-10-17 Kyocera Wireless Corp. System and method for determining when to exit an existing wireless communications coverage network
CN100464516C (zh) * 2002-12-23 2009-02-25 联想(北京)有限公司 自适应选择网络的方法
US20050020240A1 (en) * 2003-02-07 2005-01-27 Darin Minter Private wireless network
US7450943B2 (en) * 2003-02-12 2008-11-11 Qualcomm Incorporated Method and apparatus for determining coverage and switching between overlay communication systems
KR100560849B1 (ko) * 2003-05-14 2006-03-13 에스케이 텔레콤주식회사 Ｗｃｄｍａ 시스템의 서비스 품질을 이용한 핸드 오버설정 방법 및 시스템
US7460855B2 (en) * 2003-06-03 2008-12-02 Microsoft Corporation Selective pre-authentication to anticipated primary wireless access points
JP4496733B2 (ja) * 2003-08-06 2010-07-07 日本電気株式会社 移動通信システム及びそれに用いるハンドオーバ方法
CN1898984B (zh) * 2003-10-24 2010-05-12 高通股份有限公司 无线局域网和蜂窝通信系统之间的切换
CN100369522C (zh) * 2004-02-26 2008-02-13 大唐移动通信设备有限公司 实现同一基站内不同小区间用户切换的方法
KR101119372B1 (ko) 2004-05-10 2012-06-12 엘지전자 주식회사 Ｉｐ 연결 설정 방법
WO2005120109A1 (en) 2004-06-04 2005-12-15 Nortel Networks Limited Method and system for soft handoff in mobile broadband systems
CN100455102C (zh) * 2004-06-07 2009-01-21 华为技术有限公司 一种码分多址系统的软切换方法
JP4318595B2 (ja) * 2004-06-16 2009-08-26 富士通株式会社 移動端末
JP4447416B2 (ja) * 2004-09-22 2010-04-07 株式会社エヌ・ティ・ティ・ドコモ マルチバンド移動通信システムおよび送信機
KR100651033B1 (ko) * 2004-12-06 2006-11-29 한국전자통신연구원 트래픽 종류에 따른 ｌ２ 핸드오버 방법
US7430420B2 (en) * 2004-12-23 2008-09-30 Lucent Technologies Inc. Cell selection and inter-frequency handover
US20060217971A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for modifying an encoded signal
JP4711760B2 (ja) * 2005-07-08 2011-06-29 株式会社エヌ・ティ・ティ・ドコモ ハンドオーバ制御装置および移動通信システム並びにハンドオーバ方法
US20070104144A1 (en) * 2005-11-07 2007-05-10 Telefonaktiebolaget Lm Ericsson (Publ) Control of reverse link packet forwarding in a wireless communications system
FR2894106A1 (fr) * 2005-11-28 2007-06-01 France Telecom Gestion de changement de canal radio
US7729664B2 (en) * 2006-04-20 2010-06-01 Palm, Inc. Technique for reducing interference to radio operations on a computing device
US20080081623A1 (en) * 2006-09-29 2008-04-03 Motorola, Inc. Priority handoff based on battery charge level
KR100809260B1 (ko) 2006-10-18 2008-03-03 포항공과대학교 산학협력단 차세대 이동통신 네트워크에서의 상황 정보를 이용한핸드오버 결정 방법 및 장치
US20090047962A1 (en) * 2007-08-14 2009-02-19 Rao Anil M Transfer-of uplink power control parameters during handovers
CN101730177B (zh) * 2008-10-30 2012-04-18 财团法人工业技术研究院 异质网络环境下的自适应切换装置与方法
EP2567572A4 (en) * 2010-05-03 2017-06-21 Samsung Electronics Co., Ltd Method and system for handover of video calls from a packet switched network to a circuit switched network in a single radio environment
EP2403296B1 (en) * 2010-06-29 2012-12-26 Alcatel Lucent Cellular telecommunications system network element, corresponding method and computer-readable storage medium
US9807655B2 (en) * 2014-02-14 2017-10-31 Telefonaktiebolaget Lm Ericsson (Publ) PCRF assisted APN selection
CN105681549B (zh) * 2015-12-31 2019-09-17 小米科技有限责任公司 输出提示信息的方法及装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5623535A (en) * 1994-09-08 1997-04-22 Lucent Technologies Inc. Operations of cellular communications systems based on mobility and teletraffic statistics collected by mobile units
WO1997008910A1 (en) * 1995-08-31 1997-03-06 Nokia Telecommunications Oy A method for selecting the way to perform a handover, and a cellular radio system
JP3274337B2 (ja) * 1995-12-27 2002-04-15 株式会社東芝 Ｃｄｍａセルラ無線システム
EP0785696A3 (en) 1996-01-22 2000-04-05 Hitachi, Ltd. Mobile telecommunication system and method for setting telecommunication circuit therefor
GB2313258A (en) 1996-05-17 1997-11-19 Motorola Ltd Cell handover in a multimedia cellular communications system; multimedia conferencing system
JP3224345B2 (ja) * 1996-06-24 2001-10-29 株式会社エヌ・ティ・ティ・ドコモ Ｃｄｍａ移動通信システムにおけるハンドオーバ種別判定方法およびｃｄｍａ移動通信システム
US6275703B1 (en) * 1996-12-04 2001-08-14 Nokia Telecommunications Oy Controlling handover in a mobile communication network
JP3496721B2 (ja) * 1996-12-26 2004-02-16 株式会社エヌ・ティ・ティ・ドコモ フレーム送受信装置
JPH11164346A (ja) * 1997-12-01 1999-06-18 Nec Corp 移動通信システム
JP2000102065A (ja) * 1998-09-24 2000-04-07 Toshiba Corp 無線通信基地局装置

Also Published As

Publication number Publication date
AR022910A1 (es) 2002-09-04
CN1357207A (zh) 2002-07-03
EP1159841B1 (en) 2005-09-28
JP4611536B2 (ja) 2011-01-12
MY120381A (en) 2005-10-31
DE60022862T2 (de) 2006-06-22
KR20010102548A (ko) 2001-11-15
CN1158892C (zh) 2004-07-21
JP2002539696A (ja) 2002-11-19
AU769999B2 (en) 2004-02-12
DE60022862D1 (de) 2005-11-03
ES2249248T3 (es) 2006-04-01
ATE305712T1 (de) 2005-10-15
EP1159841A1 (en) 2001-12-05
US6504828B1 (en) 2003-01-07
KR100651101B1 (ko) 2006-11-29
AU2840200A (en) 2000-09-28
WO2000054540A1 (en) 2000-09-14

Similar Documents

Publication Publication Date Title
TW527841B (en) Adaptive handoff algorithms for mobiles operating in CDMA systems
CA2398717C (en) Method and apparatus for generating pilot strength measurement messages
EP1038411B1 (en) Advanced method for executing handover
JP4455755B2 (ja) アクセスネットワーク能力に基づくソフトハンドオフ制御の方法及びシステム
JP5087626B2 (ja) アドバンスドレシーバを使用する端末のためのネットワーク間ハンドオーバの最適化
JP2001519113A (ja) 移動通信システムにおける干渉の減少
JP5404813B2 (ja) 移動体装置を有する無線通信システム内における無線リンクを管理する方法とその方法を履行する装置
KR20000070975A (ko) 통신시스템에서 핸드오프를 제어하기 위한 방법 및 장치
CN102724701A (zh) 控制无线通信系统内的小区间干扰的上行链路资源分配
CN1429435A (zh) 无线电系统内的功率控制
Noerpel et al. Handover arrangement for a PCS network
CN100486352C (zh) 一种无线移动通信系统中的切换的方法和系统
US20050239472A1 (en) Allocation method and controller
JP4828874B2 (ja) 無線通信用の移動局とセルの間で無線接続を確立または解除すること
EP1377101A1 (en) Method and controller for updating an active set of a subscriber terminal in a cellular radio system
Binucci et al. Soft handover gain in WCDMA
Worley et al. Handoff schemes in CDMA cellular systems
Lugara et al. UMTS to GSM handover based on compressed mode technique
CN101185351B (zh) 基于用户服务质量需求差异的宏分集模式的控制方法
Deng et al. A new method to solve the dropped call in CDMA cellular system
Worley et al. Power reduction and threshold adjustment for soft handoff in CDMA cellular systems
Tamilselvan et al. Analysis of handoff algorithms in CDMA cellular system
Deng et al. Implementation of transparent reconnect procedure in CDMA system
Soma-Reddy et al. Macrodiversity in IP based cellular networks
Saini et al. Improving capacity of soft handoff performance in wireless mobile communication using macro diversity

Legal Events

Date Code Title Description
GD4A Issue of patent certificate for granted invention patent