CN1233123C - 从相关值波形图中减去自相关图形的小区搜索方法 - Google Patents
从相关值波形图中减去自相关图形的小区搜索方法 Download PDFInfo
- Publication number
- CN1233123C CN1233123C CNB011403721A CN01140372A CN1233123C CN 1233123 C CN1233123 C CN 1233123C CN B011403721 A CNB011403721 A CN B011403721A CN 01140372 A CN01140372 A CN 01140372A CN 1233123 C CN1233123 C CN 1233123C
- Authority
- CN
- China
- Prior art keywords
- base station
- correlation
- regularly
- spread spectrum
- oscillogram
- 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.)
- Expired - Lifetime
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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
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7107—Subtractive interference cancellation
- H04B1/71072—Successive interference cancellation
-
- 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
-
- 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
- H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70702—Intercell-related aspects
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
定时(码片) | 相关值 |
0 | 256 |
±1 | 17 |
±2 | 64 |
±3 | 17 |
±5 | 17 |
±6 | 64 |
±7 | 51 |
±9 | 51 |
±11 | 17 |
±13 | 17 |
±15 | 17 |
±16 | 16 |
±32 | 32 |
±48 | 16 |
±80 | 16 |
±96 | 32 |
±112 | 48 |
±144 | 16 |
±160 | 32 |
±176 | 48 |
±208 | 16 |
±224 | 32 |
±240 | 16 |
Claims (40)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000382145A JP3510589B2 (ja) | 2000-12-15 | 2000-12-15 | セルサーチ方法およびセルサーチ装置 |
JP382145/2000 | 2000-12-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1359209A CN1359209A (zh) | 2002-07-17 |
CN1233123C true CN1233123C (zh) | 2005-12-21 |
Family
ID=18850025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB011403721A Expired - Lifetime CN1233123C (zh) | 2000-12-15 | 2001-12-14 | 从相关值波形图中减去自相关图形的小区搜索方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7200165B2 (zh) |
EP (1) | EP1215827B1 (zh) |
JP (1) | JP3510589B2 (zh) |
CN (1) | CN1233123C (zh) |
AU (1) | AU775897B2 (zh) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004079939A1 (ja) * | 2003-03-06 | 2004-09-16 | Fujitsu Limited | セル検出装置 |
EP1482747B1 (en) * | 2003-05-28 | 2006-10-11 | Telefonaktiebolaget LM Ericsson (publ) | Cell search scheduling in a wireless cellular communication network |
US7394801B2 (en) * | 2003-06-17 | 2008-07-01 | Qisda Corporation | Cell search method suitable for initial cell search and target cell search |
US7006840B2 (en) * | 2003-09-30 | 2006-02-28 | Interdigital Technology Corporation | Efficient frame tracking in mobile receivers |
JP2005151260A (ja) * | 2003-11-17 | 2005-06-09 | Matsushita Electric Ind Co Ltd | 同期捕捉装置および同期捕捉方法 |
US7561543B2 (en) | 2004-03-16 | 2009-07-14 | Nec Corporation | Cell search process for wireless communication system |
US20070064642A1 (en) | 2005-09-21 | 2007-03-22 | Hiroaki Watabe | Cell search of time-overlapping cells in a mobile communication system |
FR2893211A1 (fr) | 2005-11-08 | 2007-05-11 | Nec Technologies Uk Ltd | Procede de suppression d'interferences dans un terminal mobile hsdpa |
KR101205631B1 (ko) * | 2006-03-21 | 2012-11-27 | 인터디지탈 테크날러지 코포레이션 | 멀티셀 무선 통신 시스템에서 전력 효율적인 셀 탐색을 수행하는 방법 및 장치 |
SG136813A1 (en) * | 2006-04-11 | 2007-11-29 | Sony Corp | A method for estimating one or more parameters of a ultra wideband signal and a receiver system for receiving ultra wideband signals |
US20100003992A1 (en) * | 2008-07-01 | 2010-01-07 | Telefonaktiebolaget L M Ericsson (Publ) | Finding Hidden Cells in a Mobile Communication System |
US20100085913A1 (en) * | 2008-07-02 | 2010-04-08 | Qualcomm Incorporated | System acquisition with interference cancellation in the presence of femtocells |
JP4679615B2 (ja) * | 2008-08-08 | 2011-04-27 | 株式会社東芝 | 伝送路応答推定器 |
US9438366B2 (en) * | 2010-02-19 | 2016-09-06 | Qualcomm Incorporated | System access for heterogeneous networks |
US9730097B2 (en) * | 2012-07-25 | 2017-08-08 | Mediatek Inc. | Method of efficient blind SCell activation |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4875188A (en) | 1988-01-12 | 1989-10-17 | Intel Corporation | Voltage margining circuit for flash eprom |
JP2822791B2 (ja) | 1992-06-30 | 1998-11-11 | 日本電気株式会社 | 半導体装置 |
US5319370A (en) | 1992-08-31 | 1994-06-07 | Crystal Semiconductor, Inc. | Analog-to-digital converter with a continuously calibrated voltage reference |
US5392239A (en) * | 1993-05-06 | 1995-02-21 | S3, Incorporated | Burst-mode DRAM |
US5710768A (en) * | 1994-09-30 | 1998-01-20 | Qualcomm Incorporated | Method of searching for a bursty signal |
US5577022A (en) * | 1994-11-22 | 1996-11-19 | Qualcomm Incorporated | Pilot signal searching technique for a cellular communications system |
US5574747A (en) * | 1995-01-04 | 1996-11-12 | Interdigital Technology Corporation | Spread spectrum adaptive power control system and method |
US5579262A (en) | 1996-02-05 | 1996-11-26 | Integrated Silicon Solution, Inc. | Program verify and erase verify control circuit for EPROM/flash |
KR100311968B1 (ko) * | 1996-03-05 | 2001-12-28 | 다치카와 게이지 | 이동통신시스템에서의신호전송방법,송신기,수신기및확산코드동기방법 |
JPH09307951A (ja) * | 1996-03-15 | 1997-11-28 | Matsushita Electric Ind Co Ltd | スペクトル拡散通信装置 |
JP3376224B2 (ja) * | 1996-10-23 | 2003-02-10 | 株式会社エヌ・ティ・ティ・ドコモ | 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 |
US6064690A (en) * | 1997-05-13 | 2000-05-16 | Yozan Inc. | Spread spectrum communication system |
JP3462364B2 (ja) | 1997-06-02 | 2003-11-05 | 株式会社エヌ・ティ・ティ・ドコモ | 直接拡散cdma伝送方式におけるrake受信機 |
EP1914904B1 (en) * | 1997-07-17 | 2014-05-28 | Inventergy, Inc. | A CDMA Radio Communication System and a Transmission Apparatus for such a System |
US6839378B1 (en) * | 1998-01-12 | 2005-01-04 | Ericsson, Inc. | Method and apparatus for multipath delay estimation in direct sequence spread spectrum communication systems |
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 |
US6108324A (en) * | 1998-09-22 | 2000-08-22 | Motorola, Inc. | Apparatus and method for performing a signal search in a wireless communication system |
JP3750390B2 (ja) * | 1999-01-08 | 2006-03-01 | 日本電気株式会社 | 移動体通信における呼制御方法及びそのシステム |
US6567482B1 (en) * | 1999-03-05 | 2003-05-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for efficient synchronization in spread spectrum communications |
US6480558B1 (en) * | 1999-03-17 | 2002-11-12 | Ericsson Inc. | Synchronization and cell search methods and apparatus for wireless communications |
JP4100809B2 (ja) | 1999-03-19 | 2008-06-11 | 三洋電機株式会社 | 有効パス検出装置 |
JP2000307470A (ja) * | 1999-04-16 | 2000-11-02 | Matsushita Electric Ind Co Ltd | 受信装置 |
US6563812B1 (en) * | 1999-10-12 | 2003-05-13 | Mitsubishi Electric Research Laboratories, Inc. | Method and apparatus for detecting multiple signals in a CDMA network |
JP3468189B2 (ja) | 2000-02-02 | 2003-11-17 | 日本電気株式会社 | パターン生成回路及びそれを用いたマルチパス検出回路並びにそのマルチパス検出方法 |
-
2000
- 2000-12-15 JP JP2000382145A patent/JP3510589B2/ja not_active Expired - Fee Related
-
2001
- 2001-12-03 EP EP20010128746 patent/EP1215827B1/en not_active Expired - Lifetime
- 2001-12-06 AU AU97122/01A patent/AU775897B2/en not_active Ceased
- 2001-12-11 US US10/014,095 patent/US7200165B2/en not_active Expired - Lifetime
- 2001-12-14 CN CNB011403721A patent/CN1233123C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1215827B1 (en) | 2011-05-11 |
AU9712201A (en) | 2002-06-20 |
JP2002185365A (ja) | 2002-06-28 |
EP1215827A3 (en) | 2006-05-17 |
US7200165B2 (en) | 2007-04-03 |
JP3510589B2 (ja) | 2004-03-29 |
US20020110185A1 (en) | 2002-08-15 |
EP1215827A2 (en) | 2002-06-19 |
CN1359209A (zh) | 2002-07-17 |
AU775897B2 (en) | 2004-08-19 |
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Legal Events
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C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
ASS | Succession or assignment of patent right |
Owner name: NEC ELECTRONICS TAIWAN LTD. Free format text: FORMER OWNER: NIPPON ELECTRIC CO., LTD. Effective date: 20030326 |
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C41 | Transfer of patent application or patent right or utility model | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20030326 Address after: Kanagawa, Japan Applicant after: NEC ELECTRONICS Corp. Address before: Tokyo, Japan Applicant before: NEC Corp. |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: ACER COMPUTER (CHINA) CO., LTD. Free format text: FORMER OWNER: BEIDA FANGZHENG SCIENCE + TECHNOLOGY COMPUTER SYSTEM CO., LTD., SHANGHAI Effective date: 20101028 |
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C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200120 36/F, SHANGHAI INTERNATIONAL BUILDING, NO.360, PUDONG SOUTH ROAD, PUDONG NEW DISTRICT, SHANGHAI TO: 200001 3/F, NO.168, XIZANG MIDDLE ROAD, HUANGPU DISTRICT, SHANGHAI |
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TR01 | Transfer of patent right |
Effective date of registration: 20101103 Address after: Kanagawa, Japan Patentee after: Renesas Electronics Corporation Address before: Kanagawa, Japan Patentee before: NEC ELECTRONICS Corp. |
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CX01 | Expiry of patent term |
Granted publication date: 20051221 |
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CX01 | Expiry of patent term |