NO20035741L - Forbedret apparat og fremgangsmate for a utfore initielt sok i tradlose kommunikasjonssystemer - Google Patents

Forbedret apparat og fremgangsmate for a utfore initielt sok i tradlose kommunikasjonssystemer

Info

Publication number
NO20035741L
NO20035741L NO20035741A NO20035741A NO20035741L NO 20035741 L NO20035741 L NO 20035741L NO 20035741 A NO20035741 A NO 20035741A NO 20035741 A NO20035741 A NO 20035741A NO 20035741 L NO20035741 L NO 20035741L
Authority
NO
Norway
Prior art keywords
psc
input signal
synchronization code
sock
carrying
Prior art date
Application number
NO20035741A
Other languages
English (en)
Other versions
NO20035741D0 (no
Inventor
Prabhakar R Chitrapu
Louis J Guccione
Andrew F Bednarz
Original Assignee
Interdigital Tech 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 Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of NO20035741D0 publication Critical patent/NO20035741D0/no
Publication of NO20035741L publication Critical patent/NO20035741L/no

Links

Classifications

    • 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
    • H04B1/70735—Code identification
    • 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
    • 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
    • H04B1/7083—Cell search, e.g. using a three-step approach

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Systemet og fremgangsmåten i henhold til den foreliggende oppfinnelsen etablerer en kommunikasjonslinje (figur 3) mellom et brukerutstyr (4) og en basestasjon (2) i en kommunikasjonssystem som har et mangfold basestasjoner som hver sender en felles primær synkroniseringskode (PSC) i en primær synkroniseringskanal i forbindelse med en basestasjon spesifikk sekundær synkroniseringskode innenfor en systemramme (figur 2), som mottar med UE et innmatet signal som innbefatter PSC og SSC fra minst en av basestasjonene. UE analyserer det innmatede signalet for å detektere noen mottatte PSC-er innenfor en valgt tidsperiode som har en varighet som korresponderer med lengden til en systemramme og bestemme en relativ lokalisering av en sterkest PSC (26) innenfor den valgte tidsperioden. Det innmatede signalet blir så behandlet for å fjerne PSC fra minst den bestemte PSC-lokaliseringen. En sekundær synkroniseringskode (SSC) blir så detektert for den bestemte lokaliseringen fra det behandlede signalet. Kommunikasjonslinken blir så etablert ved bruk av de detekterte SSC-ene.
NO20035741A 2001-06-22 2003-12-19 Forbedret apparat og fremgangsmate for a utfore initielt sok i tradlose kommunikasjonssystemer NO20035741L (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US30041201P 2001-06-22 2001-06-22
US09/998,885 US6894995B2 (en) 2001-06-22 2001-10-31 Apparatus and method for performing initial cell search in wireless communication systems
PCT/US2002/011669 WO2003001711A1 (en) 2001-06-22 2002-04-15 An improved apparatus and method for performing initial cell search in wireless communication systems

Publications (2)

Publication Number Publication Date
NO20035741D0 NO20035741D0 (no) 2003-12-19
NO20035741L true NO20035741L (no) 2004-02-23

Family

ID=26971771

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20035741A NO20035741L (no) 2001-06-22 2003-12-19 Forbedret apparat og fremgangsmate for a utfore initielt sok i tradlose kommunikasjonssystemer

Country Status (15)

Country Link
US (2) US6894995B2 (no)
EP (1) EP1407566B1 (no)
JP (1) JP3962016B2 (no)
KR (3) KR20070065446A (no)
CN (1) CN1518808A (no)
AT (1) ATE363777T1 (no)
BR (1) BR0211031A (no)
CA (1) CA2451242C (no)
DE (1) DE60220409T2 (no)
ES (1) ES2287295T3 (no)
IL (1) IL159390A0 (no)
MX (1) MXPA03011879A (no)
NO (1) NO20035741L (no)
TW (4) TW200629783A (no)
WO (1) WO2003001711A1 (no)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6396819B1 (en) 1998-03-21 2002-05-28 Richard D. Fleeter Low-cost satellite communication system
US7433391B2 (en) * 2000-02-28 2008-10-07 Aeroastro, Inc. Spread-spectrum receiver with fast M-sequence transform
US7227884B2 (en) 2000-02-28 2007-06-05 Aeroastro, Inc. Spread-spectrum receiver with progressive fourier transform
US6894995B2 (en) * 2001-06-22 2005-05-17 Interdigital Technology Corporation Apparatus and method for performing initial cell search in wireless communication systems
JP3843040B2 (ja) * 2001-09-26 2006-11-08 松下電器産業株式会社 セルサーチ方法及び通信端末装置
KR100762602B1 (ko) * 2001-10-08 2007-10-01 삼성전자주식회사 부호분할다중접속 이동통신시스템에서 기준 타이밍생성장치 및 방법
US7356098B2 (en) * 2001-11-14 2008-04-08 Ipwireless, Inc. Method, communication system and communication unit for synchronisation for multi-rate communication
US7065064B2 (en) * 2001-12-20 2006-06-20 Interdigital Technology Corporation Cell search using peak quality factors
US20030128787A1 (en) * 2002-01-10 2003-07-10 Daisuke Terasawa Method and apparatus for mitigating interference between base stations in a wideband CDMA system
US7126981B2 (en) * 2002-04-25 2006-10-24 Accton Technology Corporation Method and apparatus for cell search for W-CDMA with effect of clock offset
US20040058650A1 (en) * 2002-09-19 2004-03-25 Torgny Palenius Receivers and methods for searching for cells using recorded data
US7738437B2 (en) * 2003-01-21 2010-06-15 Nortel Networks Limited Physical layer structures and initial access schemes in an unsynchronized communication network
CN1745527B (zh) * 2003-02-05 2010-11-10 美商内数位科技公司 无线通信***中初始小区搜索
US6873833B2 (en) * 2003-03-27 2005-03-29 Interdigital Technology Corporation Method and apparatus for estimating and controlling initial time slot gain in a wireless communication system
US7403789B2 (en) * 2003-04-16 2008-07-22 Nec Corporation Synchronization establishment between a mobile station and base station system and method used for them
US7394801B2 (en) * 2003-06-17 2008-07-01 Qisda Corporation Cell search method suitable for initial cell search and target cell search
FR2857209B1 (fr) * 2003-07-03 2005-09-09 Nec Technologies Uk Ltd Procede d'optimisation de la recherche de cellules par un terminal mobile
KR100548416B1 (ko) * 2003-10-28 2006-02-02 엘지전자 주식회사 무선 프레임 동기화 방법
WO2005088855A1 (ja) * 2004-03-16 2005-09-22 Nec Corporation 無線通信システム用のセル・サーチ方法
AU2005201793A1 (en) * 2004-05-21 2005-12-08 Nec Australia Pty Ltd Method of scheduling cell search operations
US7917140B2 (en) * 2004-12-06 2011-03-29 Telefonaktiebolaget L M Ericsson (Publ) Initial cell search in mobile communications systems
US8134996B2 (en) 2005-07-21 2012-03-13 Texas Instruments Incorporated Downlink synchronization for a cellular OFDM communication system
US20090147757A1 (en) * 2005-08-22 2009-06-11 Matsushita Electric Industrial Co., Ltd. Base station device and mobile station device
WO2007136415A2 (en) * 2005-12-30 2007-11-29 Comtech Mobile Datacom Corporation Mobile satellite communications
WO2007124451A2 (en) * 2006-04-20 2007-11-01 Texas Instruments Incorporated Downlink synchronization channel and methods for cellular systems
CN101490978A (zh) * 2006-04-20 2009-07-22 德克萨斯仪器股份有限公司 下行链路同步化信道和蜂窝***的方法
US8031745B2 (en) * 2006-04-20 2011-10-04 Texas Instruments Incorporated Downlink synchronization channel and methods for cellular systems
JP5156745B2 (ja) 2006-07-25 2013-03-06 韓國電子通信研究院 無線通信システムで順方向同期信号伝送方法、セル識別子検出方法及びこれを利用する装置及び順方向リンクフレーム構造
US8223625B2 (en) * 2006-08-23 2012-07-17 Qualcomm, Incorporated Acquisition in frequency division multiple access systems
US8275080B2 (en) * 2006-11-17 2012-09-25 Comtech Mobile Datacom Corporation Self-supporting simplex packets
GB2458418B (en) 2006-12-19 2011-08-03 Lg Electronics Inc Sequence generating method for efficient detection and method for transmitting and receiving signals using the same
US8009661B2 (en) 2007-01-31 2011-08-30 Telefonaktiebolaget Lm Ericsson (Publ) Cell searching system and method
CN100556195C (zh) * 2007-04-29 2009-10-28 中兴通讯股份有限公司 时分双工***循环前缀类型的检测及小区初始搜索方法
KR100938756B1 (ko) * 2007-07-06 2010-01-26 엘지전자 주식회사 무선통신 시스템에서 셀 탐색 과정을 수행하는 방법
US9119132B2 (en) 2007-10-10 2015-08-25 Qualcomm Incorporated Efficient system identification schemes for communication systems
US8503547B2 (en) * 2007-10-11 2013-08-06 Qualcomm Incorporated Scrambling codes for secondary synchronization codes in wireless communication systems
US8284749B2 (en) * 2008-03-10 2012-10-09 Comtech Mobile Datacom Corporation Time slot synchronized, flexible bandwidth communication system
KR20090116079A (ko) * 2008-05-06 2009-11-11 주식회사 팬택앤큐리텔 기지국 제어기의 빔 포밍 시스템 및 방법
US8548107B1 (en) 2009-01-26 2013-10-01 Comtech Mobile Datacom Corporation Advanced multi-user detector
US9106364B1 (en) 2009-01-26 2015-08-11 Comtech Mobile Datacom Corporation Signal processing of a high capacity waveform
WO2010123295A2 (ko) * 2009-04-24 2010-10-28 한국전자통신연구원 셀룰라 무선 통신 시스템에서의 협력 통신 방법 및 이를 수행하는 단말기
US8265625B2 (en) * 2009-08-20 2012-09-11 Acer Incorporated Systems and methods for network entry management
US8675711B1 (en) 2009-09-25 2014-03-18 Comtech Mobile Datacom Corporation System and methods for dynamic spread spectrum usage
CN102347783A (zh) * 2010-07-30 2012-02-08 富士通株式会社 在时分双工***中进行同步检测的装置、方法及终端设备
TWI404346B (zh) * 2010-11-12 2013-08-01 Ind Tech Res Inst 分碼多工為基礎之多用戶偵測方法及系統及其電腦程式產品
GB2496383A (en) * 2011-11-07 2013-05-15 Nec Corp Extension carriers having synchronisation signals with configurable locations
US9510212B2 (en) 2012-04-27 2016-11-29 Qualcomm Incorporated Signal designs for densely deployed network
US9615296B2 (en) 2013-01-28 2017-04-04 Nokia Solutions And Networks Oy System and method for scrambling code association
US11363550B2 (en) * 2018-11-28 2022-06-14 Samsung Electronics Co., Ltd. Wireless communication device for detecting synchronization signal and method of searching for synchronization signal by using the same
KR20210056861A (ko) 2019-11-11 2021-05-20 삼성전자주식회사 전자 장치 및 전자 장치의 셀 선택 방법

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3373746B2 (ja) * 1997-01-07 2003-02-04 株式会社鷹山 Ｄｓ−ｃｄｍａ基地局間非同期セルラ方式における初期同期方法および受信機
US6185244B1 (en) * 1997-08-29 2001-02-06 Telefonaktiebolaget Lm Ericsson Cell searching in a CDMA communications system
US5930366A (en) * 1997-08-29 1999-07-27 Telefonaktiebolaget L M Ericsson Synchronization to a base station and code acquisition within a spread spectrum communication system
US6526039B1 (en) * 1998-02-12 2003-02-25 Telefonaktiebolaget Lm Ericsson Method and system for facilitating timing of base stations in an asynchronous CDMA mobile communications system
US6233466B1 (en) * 1998-12-14 2001-05-15 Metawave Communications Corporation Downlink beamforming using beam sweeping and subscriber feedback
AU3383400A (en) * 1999-02-26 2000-09-14 Qualcomm Incorporated Method and system for handoff between an asynchronous cdma base station and a synchronous cdma base station
US6480558B1 (en) * 1999-03-17 2002-11-12 Ericsson Inc. Synchronization and cell search methods and apparatus for wireless communications
US6804311B1 (en) * 1999-04-08 2004-10-12 Texas Instruments Incorporated Diversity detection for WCDMA
WO2000067399A1 (en) 1999-04-29 2000-11-09 Samsung Electronics Co., Ltd. Appararus and method for synchronizing channels in a w-cdma communication system
US6717930B1 (en) * 2000-05-22 2004-04-06 Interdigital Technology Corporation Cell search procedure for time division duplex communication systems using code division multiple access
US6363060B1 (en) * 1999-06-30 2002-03-26 Qualcomm Incorporated Method and apparatus for fast WCDMA acquisition
US6697622B1 (en) * 1999-09-06 2004-02-24 Nit Docomo, Inc. Control method of searching neighboring cells, mobile station, and mobile communication system
JP2001086035A (ja) * 1999-09-14 2001-03-30 Nec Corp Ｃｄｍａにおけるセルサーチ方法
US6665288B1 (en) 1999-11-08 2003-12-16 Ericsson Inc. Method and apparatus for reducing synchronization code interference in CDMA communications systems
US6597729B1 (en) * 2000-03-29 2003-07-22 Texas Instruments Incorporated Joint position and carrier frequency estimation method of initial frequency acquisition for a WCDMA mobile terminal
US6894995B2 (en) * 2001-06-22 2005-05-17 Interdigital Technology Corporation Apparatus and method for performing initial cell search in wireless communication systems
US6768768B2 (en) * 2001-09-19 2004-07-27 Qualcomm Incorporated Method and apparatus for step two W-CDMA searching

Also Published As

Publication number Publication date
TW200421763A (en) 2004-10-16
US6894995B2 (en) 2005-05-17
KR100703645B1 (ko) 2007-04-05
CA2451242C (en) 2008-04-08
KR20050098007A (ko) 2005-10-10
ES2287295T3 (es) 2007-12-16
DE60220409T2 (de) 2008-01-24
EP1407566B1 (en) 2007-05-30
WO2003001711A1 (en) 2003-01-03
JP3962016B2 (ja) 2007-08-22
CN1518808A (zh) 2004-08-04
TW200629783A (en) 2006-08-16
EP1407566A1 (en) 2004-04-14
BR0211031A (pt) 2004-06-22
US20030031162A1 (en) 2003-02-13
KR20070065446A (ko) 2007-06-22
TWI239779B (en) 2005-09-11
CA2451242A1 (en) 2003-01-03
US20050221848A1 (en) 2005-10-06
TW200746660A (en) 2007-12-16
JP2004533784A (ja) 2004-11-04
TWI276316B (en) 2007-03-11
ATE363777T1 (de) 2007-06-15
MXPA03011879A (es) 2004-03-26
EP1407566A4 (en) 2004-09-22
KR20040007737A (ko) 2004-01-24
IL159390A0 (en) 2004-06-01
NO20035741D0 (no) 2003-12-19
DE60220409D1 (de) 2007-07-12

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