KR100760479B1 - 같은 주파수 밴드폭에서 두개의 ｃｄｍａ 시스템을오버레잉하는 방법 및 장치 - Google Patents

같은 주파수 밴드폭에서 두개의 ｃｄｍａ 시스템을오버레잉하는 방법 및 장치 Download PDF

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KR100760479B1
KR100760479B1 KR1020027003323A KR20027003323A KR100760479B1 KR 100760479 B1 KR100760479 B1 KR 100760479B1 KR 1020027003323 A KR1020027003323 A KR 1020027003323A KR 20027003323 A KR20027003323 A KR 20027003323A KR 100760479 B1 KR100760479 B1 KR 100760479B1
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South Korea
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signal
cdma
base station
signals
timing
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Korean (ko)
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KR20020030819A (ko
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에드워드 지. 주니어 타이드만
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콸콤 인코포레이티드
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2687—Inter base stations synchronisation
    • H04B7/2696—Over the air autonomous synchronisation, e.g. by monitoring network activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2668—Arrangements for Wireless Code-Division Multiple Access [CDMA] System Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
KR1020027003323A 1999-09-13 2000-09-12 같은 주파수 밴드폭에서 두개의 ｃｄｍａ 시스템을오버레잉하는 방법 및 장치 Expired - Fee Related KR100760479B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/395,300 US6882631B1 (en) 1999-09-13 1999-09-13 Method and apparatus for overlaying two CDMA systems on the same frequency bandwidth
US09/395,300 1999-09-13

Publications (2)

Publication Number Publication Date
KR20020030819A KR20020030819A (ko) 2002-04-25
KR100760479B1 true KR100760479B1 (ko) 2007-09-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020027003323A Expired - Fee Related KR100760479B1 (ko) 1999-09-13 2000-09-12 같은 주파수 밴드폭에서 두개의 ｃｄｍａ 시스템을오버레잉하는 방법 및 장치

Country Status (10)

Country Link
US (3) US6882631B1 (enExample)
EP (1) EP1212851A1 (enExample)
JP (2) JP2003509952A (enExample)
KR (1) KR100760479B1 (enExample)
CN (1) CN1168232C (enExample)
AU (1) AU7372400A (enExample)
BR (1) BR0013934A (enExample)
HK (1) HK1047659B (enExample)
TW (1) TWI239153B (enExample)
WO (1) WO2001020817A1 (enExample)

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US6882631B1 (en) * 1999-09-13 2005-04-19 Qualcomm Incorporated Method and apparatus for overlaying two CDMA systems on the same frequency bandwidth
US6314126B1 (en) * 2001-01-12 2001-11-06 Linex Technologies, Inc. Spread-spectrum handoff and source congestion avoidance system and method
US8605686B2 (en) * 2001-02-12 2013-12-10 Qualcomm Incorporated Method and apparatus for power control in a wireless communication system
US20040137416A1 (en) * 2002-04-05 2004-07-15 Yue Ma System and method using adaptive learning components to enhance target advertising and customize system behavior
US8194703B2 (en) 2002-08-07 2012-06-05 Kyocera Corporation Wireless communication system
US8364185B2 (en) * 2005-04-18 2013-01-29 Samsung Electronics Co., Ltd. Method and system for synchronizing a clock for an adjacent network to a clock for an overlay network
KR100830163B1 (ko) * 2005-04-20 2008-05-20 삼성전자주식회사 주파수 오버레이 통신 시스템에서 신호 송수신 장치 및 방법
US7933561B2 (en) * 2006-12-11 2011-04-26 Apple Inc. Wireless communications circuitry with simultaneous receive capabilities for handheld electronic devices
JP4606405B2 (ja) * 2006-12-18 2011-01-05 京セラ株式会社 無線通信システムの制御方法、基地局の制御方法、無線通信端末の制御方法
US8325856B2 (en) 2007-03-05 2012-12-04 Qualcomm Incorporated Coherent initial acquisition
US7818029B2 (en) * 2007-04-11 2010-10-19 Apple Inc. Wireless communications circuitry with antenna sharing capabilities for handheld electronic devices
FI20085423A0 (fi) * 2008-05-08 2008-05-08 Nokia Siemens Networks Oy Synkronointi matkaviestinjärjestelmässä
WO2010087665A2 (en) * 2009-02-02 2010-08-05 Lg Electronics Inc. Method and apparatus for transmitting data performed by at least one base sation in wireless communication system
US8219157B2 (en) * 2009-03-26 2012-07-10 Apple Inc. Electronic device with shared multiband antenna and antenna diversity circuitry
US8208867B2 (en) * 2009-04-09 2012-06-26 Apple Inc. Shared multiband antennas and antenna diversity circuitry for electronic devices
EP3291460B1 (en) * 2015-06-25 2019-08-14 Huawei Technologies Co., Ltd. Method of synchronizing phases and device utilizing same

Citations (3)

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US5224120A (en) 1990-12-05 1993-06-29 Interdigital Technology Corporation Dynamic capacity allocation CDMA spread spectrum communications
US5608765A (en) 1994-07-08 1997-03-04 Nec Corporation Radio frame synchronization system
US5828659A (en) 1993-06-14 1998-10-27 Telefonaktiebolaget Lm Ericsson Time alignment of transmission in a down-link of CDMA system

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GB2267627B (en) 1992-05-27 1996-01-03 Roke Manor Research Improvements in or relating to radio communication systems
US5446727A (en) * 1993-11-30 1995-08-29 Motorola Inc. Method and apparatus for time aligning signals for reception in a code-division multiple access communication system
US5577031A (en) * 1995-03-22 1996-11-19 Smith; Jeffrey W. Wideband channelizer incorporating diversity switch
AU3260195A (en) * 1995-08-31 1997-03-19 Nokia Telecommunications Oy Method and device for controlling transmission power of a radio transmitter in a cellular communication system
JP2785789B2 (ja) * 1996-02-09 1998-08-13 日本電気株式会社 ディジタル移動通信システム
FI961362A7 (fi) * 1996-03-25 1997-09-26 Nokia Telecommunications Oy Häiriöiden vähentämismenetelmä ja radiojärjestelmä
JPH1013918A (ja) * 1996-06-19 1998-01-16 Toshiba Corp 符号分割多元接続方式を採用した移動通信システムとその無線通信装置
FI964707A7 (fi) * 1996-11-26 1998-05-27 Nokia Telecommunications Oy Menetelmä kuormituksen kontrolloimiseksi ja radiojärjestelmä
US5907577A (en) * 1997-02-06 1999-05-25 At&T Wireless Services Delay compensation
US6539050B1 (en) * 1997-06-26 2003-03-25 Hughes Electronics Corporation Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission
US6510147B1 (en) * 1997-07-15 2003-01-21 Hughes Electronics Corporation Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals
US6285669B1 (en) * 1997-07-17 2001-09-04 Nortel Networks Limited CDMA direct spread overlay system and method of operation
US6307840B1 (en) * 1997-09-19 2001-10-23 Qualcomm Incorporated Mobile station assisted timing synchronization in CDMA communication system
US5960347A (en) * 1997-10-09 1999-09-28 Interdigital Technology Corporation Seamless handoff system and method
US6493376B1 (en) * 1997-10-10 2002-12-10 Qualcomm, Inc. Multi-layered PN code spreading in a multi-user communications system
US6208871B1 (en) * 1998-02-27 2001-03-27 Motorola, Inc. Method and apparatus for providing a time adjustment to a wireless communication system
US6490314B1 (en) * 1998-09-23 2002-12-03 Ericsson Inc. Method for overlay of narrowband and wideband communication systems
US6747956B1 (en) * 1999-07-30 2004-06-08 Lucent Technologies Inc. Method for measurement of receive antenna return loss in a CDMA radio system
US6882631B1 (en) * 1999-09-13 2005-04-19 Qualcomm Incorporated Method and apparatus for overlaying two CDMA systems on the same frequency bandwidth

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5224120A (en) 1990-12-05 1993-06-29 Interdigital Technology Corporation Dynamic capacity allocation CDMA spread spectrum communications
US5828659A (en) 1993-06-14 1998-10-27 Telefonaktiebolaget Lm Ericsson Time alignment of transmission in a down-link of CDMA system
US5608765A (en) 1994-07-08 1997-03-04 Nec Corporation Radio frame synchronization system

Also Published As

Publication number Publication date
US6882631B1 (en) 2005-04-19
CN1168232C (zh) 2004-09-22
HK1047659B (zh) 2005-05-13
US20070147293A1 (en) 2007-06-28
JP2003509952A (ja) 2003-03-11
CN1373947A (zh) 2002-10-09
BR0013934A (pt) 2002-07-02
EP1212851A1 (en) 2002-06-12
HK1047659A1 (en) 2003-02-28
JP2011082972A (ja) 2011-04-21
US7212508B2 (en) 2007-05-01
US20050122917A1 (en) 2005-06-09
TWI239153B (en) 2005-09-01
WO2001020817A1 (en) 2001-03-22
US7397780B2 (en) 2008-07-08
KR20020030819A (ko) 2002-04-25
AU7372400A (en) 2001-04-17

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