WO1995015626A1 - Time alignment in a cdma system - Google Patents
Time alignment in a cdma system Download PDFInfo
- Publication number
- WO1995015626A1 WO1995015626A1 PCT/US1994/012635 US9412635W WO9515626A1 WO 1995015626 A1 WO1995015626 A1 WO 1995015626A1 US 9412635 W US9412635 W US 9412635W WO 9515626 A1 WO9515626 A1 WO 9515626A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base
- station
- signal
- signals
- time
- Prior art date
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
- H04L7/007—Detection of the synchronisation error by features other than the received signal transition detection of error based on maximum signal power, e.g. peak value, maximizing autocorrelation
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950703144A KR0177268B1 (en) | 1993-11-30 | 1994-11-03 | Time alignment in a cdma system |
EP95930323A EP0695484B1 (en) | 1993-11-30 | 1994-11-03 | Time alignment in a cdma system |
JP51560495A JP3565856B2 (en) | 1993-11-30 | 1994-11-03 | Method and apparatus for time aligning signals for reception in a code division multiple access communication system |
GB9515712A GB2290200B (en) | 1993-11-30 | 1994-11-03 | Time alignment in a CDMA system |
BR9405751A BR9405751A (en) | 1993-11-30 | 1994-11-03 | Process and base station for time alignment of reception signals in multi-access code division communications system code division multiple access communications system |
DE4499436A DE4499436B3 (en) | 1993-11-30 | 1994-11-03 | A method of timing signals for reception in a microcellular code division multiple access (CDMA) communication system |
FI953407A FI112746B (en) | 1993-11-30 | 1995-07-12 | A method and apparatus for temporally aligning signals for reception in a code divisional communication system |
SE9502704A SE521574C2 (en) | 1993-11-30 | 1995-07-27 | Method and apparatus for timing signals for reception in a communication system with code-shared multi-user access |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/159,633 US5446727A (en) | 1993-11-30 | 1993-11-30 | Method and apparatus for time aligning signals for reception in a code-division multiple access communication system |
US08/159,633 | 1993-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995015626A1 true WO1995015626A1 (en) | 1995-06-08 |
Family
ID=22573340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1994/012635 WO1995015626A1 (en) | 1993-11-30 | 1994-11-03 | Time alignment in a cdma system |
Country Status (13)
Country | Link |
---|---|
US (1) | US5446727A (en) |
EP (1) | EP0695484B1 (en) |
JP (1) | JP3565856B2 (en) |
KR (1) | KR0177268B1 (en) |
CN (1) | CN1065094C (en) |
BR (1) | BR9405751A (en) |
DE (1) | DE4499436B3 (en) |
FI (1) | FI112746B (en) |
GB (1) | GB2290200B (en) |
RU (1) | RU2122290C1 (en) |
SE (1) | SE521574C2 (en) |
SG (1) | SG69960A1 (en) |
WO (1) | WO1995015626A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997037456A2 (en) * | 1996-04-02 | 1997-10-09 | Qualcomm Incorporated | Using orthogonal waveforms to enable multiple transmitters to share a single cdm channel |
WO2000004652A1 (en) * | 1998-07-17 | 2000-01-27 | Motorola, Inc. | Method for synchronous code division multiplexed communications |
US6400679B1 (en) | 1996-01-29 | 2002-06-04 | Sony Corporation | Communication resource allocation method and apparatus |
WO2004042962A1 (en) * | 2002-11-08 | 2004-05-21 | Matsushita Electric Industrial Co., Ltd. | Radio communication base station apparatus and delay profile averaging method |
EP0673130B1 (en) * | 1994-03-15 | 2007-12-19 | NEC Corporation | CDMA Communication Method for Adjusting Transmission Timing of Signals from Mobile Station to Base Station, and Base Station therefore. |
Families Citing this family (65)
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WO1992007434A1 (en) | 1990-10-23 | 1992-04-30 | Omnipoint Corporation | Method and apparatus for establishing spread spectrum communications |
US5285469A (en) | 1991-06-03 | 1994-02-08 | Omnipoint Data Corporation | Spread spectrum wireless telephone system |
US6005856A (en) | 1993-11-01 | 1999-12-21 | Omnipoint Corporation | Communication protocol for spread spectrum wireless communication system |
JPH07221734A (en) * | 1994-01-31 | 1995-08-18 | Matsushita Electric Ind Co Ltd | Code division multiple access equipment |
US5757847A (en) | 1994-09-09 | 1998-05-26 | Omnipoint Corporation | Method and apparatus for decoding a phase encoded signal |
US5754585A (en) | 1994-09-09 | 1998-05-19 | Omnipoint Corporation | Method and apparatus for serial noncoherent correlation of a spread spectrum signal |
US5963586A (en) | 1994-09-09 | 1999-10-05 | Omnipoint Corporation | Method and apparatus for parallel noncoherent correlation of a spread spectrum signal |
US5856998A (en) | 1994-09-09 | 1999-01-05 | Omnipoint Corporation | Method and apparatus for correlating a continuous phase modulated spread spectrum signal |
US5754584A (en) | 1994-09-09 | 1998-05-19 | Omnipoint Corporation | Non-coherent spread-spectrum continuous-phase modulation communication system |
US5659574A (en) | 1994-09-09 | 1997-08-19 | Omnipoint Corporation | Multi-bit correlation of continuous phase modulated signals |
US5832028A (en) | 1994-09-09 | 1998-11-03 | Omnipoint Corporation | Method and apparatus for coherent serial correlation of a spread spectrum signal |
US5627856A (en) | 1994-09-09 | 1997-05-06 | Omnipoint Corporation | Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators |
US5881100A (en) | 1994-09-09 | 1999-03-09 | Omnipoint Corporation | Method and apparatus for coherent correlation of a spread spectrum signal |
US5648982A (en) | 1994-09-09 | 1997-07-15 | Omnipoint Corporation | Spread spectrum transmitter |
US5692007A (en) | 1994-09-09 | 1997-11-25 | Omnipoint Corporation | Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation |
US5680414A (en) | 1994-09-09 | 1997-10-21 | Omnipoint Corporation | Synchronization apparatus and method for spread spectrum receiver |
US5953370A (en) | 1994-09-09 | 1999-09-14 | Omnipoint Corporation | Apparatus for receiving and correlating a spread spectrum signal |
US5610940A (en) | 1994-09-09 | 1997-03-11 | Omnipoint Corporation | Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal |
US5629956A (en) | 1994-09-09 | 1997-05-13 | Omnipoint Corporation | Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal |
US6334219B1 (en) | 1994-09-26 | 2001-12-25 | Adc Telecommunications Inc. | Channel selection for a hybrid fiber coax network |
USRE42236E1 (en) | 1995-02-06 | 2011-03-22 | Adc Telecommunications, Inc. | Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing |
US7280564B1 (en) | 1995-02-06 | 2007-10-09 | Adc Telecommunications, Inc. | Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing |
US5689502A (en) * | 1995-06-05 | 1997-11-18 | Omnipoint Corporation | Efficient frequency division duplex communication system with interleaved format and timing adjustment control |
US5802046A (en) * | 1995-06-05 | 1998-09-01 | Omnipoint Corporation | Efficient time division duplex communication system with interleaved format and timing adjustment control |
US5959980A (en) | 1995-06-05 | 1999-09-28 | Omnipoint Corporation | Timing adjustment control for efficient time division duplex communication |
US5745484A (en) * | 1995-06-05 | 1998-04-28 | Omnipoint Corporation | Efficient communication system using time division multiplexing and timing adjustment control |
US6041046A (en) * | 1995-07-14 | 2000-03-21 | Omnipoint Corporation | Cyclic time hopping in time division multiple access communication system |
US6101176A (en) * | 1996-07-24 | 2000-08-08 | Nokia Mobile Phones | Method and apparatus for operating an indoor CDMA telecommunications system |
US5757846A (en) * | 1996-08-30 | 1998-05-26 | Vasudevan; Subramanian | CDMA communication system and method with dual-mode receiver |
US6243372B1 (en) | 1996-11-14 | 2001-06-05 | Omnipoint Corporation | Methods and apparatus for synchronization in a wireless network |
US6085076A (en) * | 1997-04-07 | 2000-07-04 | Omnipoint Corporation | Antenna diversity for wireless communication system |
US5867525A (en) * | 1997-06-10 | 1999-02-02 | L-3 Commuications Corporation | Synchronizer and method therefor and communications system incorporating same |
DE29710331U1 (en) * | 1997-06-13 | 1997-08-14 | Technisat Digital Gmbh | Satellite transmission system for digital data transmission over subcarrier frequencies |
US6081536A (en) | 1997-06-20 | 2000-06-27 | Tantivy Communications, Inc. | Dynamic bandwidth allocation to transmit a wireless protocol across a code division multiple access (CDMA) radio link |
US6542481B2 (en) | 1998-06-01 | 2003-04-01 | Tantivy Communications, Inc. | Dynamic bandwidth allocation for multiple access communication using session queues |
US6005889A (en) * | 1997-07-17 | 1999-12-21 | Nokia | Pseudo-random noise detector for signals having a carrier frequency offset |
US6205131B1 (en) | 1997-12-16 | 2001-03-20 | Sony Corporation | Broadband implementation of supplemental code channel carrier phase offsets |
US7496072B2 (en) | 1997-12-17 | 2009-02-24 | Interdigital Technology Corporation | System and method for controlling signal strength over a reverse link of a CDMA wireless communication system |
US8175120B2 (en) | 2000-02-07 | 2012-05-08 | Ipr Licensing, Inc. | Minimal maintenance link to support synchronization |
US7079523B2 (en) | 2000-02-07 | 2006-07-18 | Ipr Licensing, Inc. | Maintenance link using active/standby request channels |
US7936728B2 (en) | 1997-12-17 | 2011-05-03 | Tantivy Communications, Inc. | System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system |
US9525923B2 (en) | 1997-12-17 | 2016-12-20 | Intel Corporation | Multi-detection of heartbeat to reduce error probability |
US7394791B2 (en) * | 1997-12-17 | 2008-07-01 | Interdigital Technology Corporation | Multi-detection of heartbeat to reduce error probability |
US6222832B1 (en) | 1998-06-01 | 2001-04-24 | Tantivy Communications, Inc. | Fast Acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system |
KR100407355B1 (en) * | 1998-02-14 | 2004-04-03 | 삼성전자주식회사 | Apparatus and method for aligning time of reverse link in mobile communication system |
US6188716B1 (en) | 1998-03-02 | 2001-02-13 | Pan Atlantic Corporation | Radio and communication method using a transmitted intermediate frequency |
US8134980B2 (en) | 1998-06-01 | 2012-03-13 | Ipr Licensing, Inc. | Transmittal of heartbeat signal at a lower level than heartbeat request |
US7773566B2 (en) | 1998-06-01 | 2010-08-10 | Tantivy Communications, Inc. | System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system |
US7221664B2 (en) * | 1998-06-01 | 2007-05-22 | Interdigital Technology Corporation | Transmittal of heartbeat signal at a lower level than heartbeat request |
JP3031341B2 (en) * | 1998-07-28 | 2000-04-10 | 日本電気株式会社 | Receiver for random access channel |
US6965778B1 (en) | 1999-04-08 | 2005-11-15 | Ipr Licensing, Inc. | Maintenance of channel usage in a wireless communication system |
US6765894B1 (en) * | 1999-07-05 | 2004-07-20 | Matsushita Electric Industrial Co, Ltd. | Communication terminal apparatus and base station apparatus |
US6882631B1 (en) * | 1999-09-13 | 2005-04-19 | Qualcomm Incorporated | Method and apparatus for overlaying two CDMA systems on the same frequency bandwidth |
CN1154269C (en) * | 1999-09-28 | 2004-06-16 | 西门子(中国)有限公司 | Method and system for keeping upper links in synchronization in CDMA mobile communication system |
DE19953486C2 (en) * | 1999-11-06 | 2003-08-14 | Siemens Ag | Method for synchronizing an uplink signal transmission in a radio communication system |
KR100980343B1 (en) | 2000-02-07 | 2010-09-06 | 아이피알 라이센싱, 인코포레이티드 | Maintenance link using active/standby request channels |
AU758238B2 (en) * | 2000-02-17 | 2003-03-20 | Linkair Communications, Inc. | A method for spread spectrum multiple access coding with zero correlation window |
FR2806158B1 (en) * | 2000-03-07 | 2002-05-17 | Commissariat Energie Atomique | METHOD FOR DETERMINING THE POSITION OR ORIENTATION OF AN OBJECT USING A MAGNETIC FIELD AND CORRESPONDING DEVICE |
FR2807589B1 (en) * | 2000-04-07 | 2003-08-29 | Cit Alcatel | METHOD OF ADJUSTING THE MOMENTS OF TRANSMISSION IN A MOBILE RADIOCOMMUNICATIONS SYSTEM |
US8155096B1 (en) | 2000-12-01 | 2012-04-10 | Ipr Licensing Inc. | Antenna control system and method |
US6954448B2 (en) | 2001-02-01 | 2005-10-11 | Ipr Licensing, Inc. | Alternate channel for carrying selected message types |
US7551663B1 (en) | 2001-02-01 | 2009-06-23 | Ipr Licensing, Inc. | Use of correlation combination to achieve channel detection |
ES2626289T3 (en) | 2001-06-13 | 2017-07-24 | Intel Corporation | Method and apparatus for transmitting heartbeat signal at a lower level than the heartbeat request |
JP4387773B2 (en) * | 2003-11-25 | 2009-12-24 | アルプス電気株式会社 | Capacitance detection circuit, detection method, and fingerprint sensor using the same |
US8199791B2 (en) * | 2005-06-08 | 2012-06-12 | Polycom, Inc. | Mixed voice and spread spectrum data signaling with enhanced concealment of data |
Citations (4)
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US4688210A (en) * | 1985-03-29 | 1987-08-18 | U.S. Philips Corporation | Method of and arrangement for synchronizing the receiver arrangements in a digital multiplex transmission system |
US4893318A (en) * | 1988-01-26 | 1990-01-09 | Computer Sports Medicine, Inc. | Method for referencing multiple data processors to a common time reference |
US5257404A (en) * | 1991-10-04 | 1993-10-26 | Motorola, Inc. | Simulcast synchronization and equalization system and method therefor |
US5317571A (en) * | 1992-01-31 | 1994-05-31 | Alcatel Cit | Method for determining the transmission time between remote and central terminal stations in a point-to-multipoint bidirectional transmission network |
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JPH07112189B2 (en) * | 1989-12-07 | 1995-11-29 | 日本電気株式会社 | Signal detection method |
US5103459B1 (en) * | 1990-06-25 | 1999-07-06 | Qualcomm Inc | System and method for generating signal waveforms in a cdma cellular telephone system |
US5164958A (en) * | 1991-05-22 | 1992-11-17 | Cylink Corporation | Spread spectrum cellular handoff method |
US5235615A (en) * | 1991-05-22 | 1993-08-10 | Cylink Corporation | Spread spectrum method |
US5177765A (en) * | 1991-06-03 | 1993-01-05 | Spectralink Corporation | Direct-sequence spread-spectrum digital signal acquisition and tracking system and method therefor |
US5268933A (en) * | 1991-09-27 | 1993-12-07 | Motorola, Inc. | Data packet alignment in a communication system |
US5329547A (en) * | 1993-03-11 | 1994-07-12 | Motorola, Inc. | Method and apparatus for coherent communication in a spread-spectrum communication system |
-
1993
- 1993-11-30 US US08/159,633 patent/US5446727A/en not_active Expired - Lifetime
-
1994
- 1994-11-03 BR BR9405751A patent/BR9405751A/en not_active IP Right Cessation
- 1994-11-03 CN CN941910407A patent/CN1065094C/en not_active Expired - Lifetime
- 1994-11-03 WO PCT/US1994/012635 patent/WO1995015626A1/en active IP Right Grant
- 1994-11-03 KR KR1019950703144A patent/KR0177268B1/en not_active IP Right Cessation
- 1994-11-03 EP EP95930323A patent/EP0695484B1/en not_active Expired - Lifetime
- 1994-11-03 RU RU95116289A patent/RU2122290C1/en active
- 1994-11-03 SG SG1996003819A patent/SG69960A1/en unknown
- 1994-11-03 GB GB9515712A patent/GB2290200B/en not_active Expired - Lifetime
- 1994-11-03 DE DE4499436A patent/DE4499436B3/en not_active Expired - Lifetime
- 1994-11-03 JP JP51560495A patent/JP3565856B2/en not_active Expired - Lifetime
-
1995
- 1995-07-12 FI FI953407A patent/FI112746B/en not_active IP Right Cessation
- 1995-07-27 SE SE9502704A patent/SE521574C2/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US4688210A (en) * | 1985-03-29 | 1987-08-18 | U.S. Philips Corporation | Method of and arrangement for synchronizing the receiver arrangements in a digital multiplex transmission system |
US4893318A (en) * | 1988-01-26 | 1990-01-09 | Computer Sports Medicine, Inc. | Method for referencing multiple data processors to a common time reference |
US5257404A (en) * | 1991-10-04 | 1993-10-26 | Motorola, Inc. | Simulcast synchronization and equalization system and method therefor |
US5317571A (en) * | 1992-01-31 | 1994-05-31 | Alcatel Cit | Method for determining the transmission time between remote and central terminal stations in a point-to-multipoint bidirectional transmission network |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0673130B1 (en) * | 1994-03-15 | 2007-12-19 | NEC Corporation | CDMA Communication Method for Adjusting Transmission Timing of Signals from Mobile Station to Base Station, and Base Station therefore. |
US6400679B1 (en) | 1996-01-29 | 2002-06-04 | Sony Corporation | Communication resource allocation method and apparatus |
WO1997037456A2 (en) * | 1996-04-02 | 1997-10-09 | Qualcomm Incorporated | Using orthogonal waveforms to enable multiple transmitters to share a single cdm channel |
WO1997037456A3 (en) * | 1996-04-02 | 1997-12-24 | Qualcomm Inc | Using orthogonal waveforms to enable multiple transmitters to share a single cdm channel |
US6134215A (en) * | 1996-04-02 | 2000-10-17 | Qualcomm Incorpoated | Using orthogonal waveforms to enable multiple transmitters to share a single CDM channel |
AU735982B2 (en) * | 1996-04-02 | 2001-07-19 | Qualcomm Incorporated | Using orthogonal waveforms to enable multiple transmitters to share a single CDM channel |
KR100801043B1 (en) * | 1996-04-02 | 2008-05-06 | 퀄컴 인코포레이티드 | How Orthogonal Waveforms Enable Multiple Transmitters to Share a Single CDDM Channel |
KR100877084B1 (en) * | 1996-04-02 | 2009-01-07 | 퀄컴 인코포레이티드 | Using orthogonal waveforms to enable multiple transmitters to share a single cdm channel |
WO2000004652A1 (en) * | 1998-07-17 | 2000-01-27 | Motorola, Inc. | Method for synchronous code division multiplexed communications |
US6215780B1 (en) | 1998-07-17 | 2001-04-10 | Motorola, Inc. | Method and system for synchronous code division multiplexed communications |
WO2004042962A1 (en) * | 2002-11-08 | 2004-05-21 | Matsushita Electric Industrial Co., Ltd. | Radio communication base station apparatus and delay profile averaging method |
Also Published As
Publication number | Publication date |
---|---|
DE4499436B3 (en) | 2005-07-28 |
GB2290200B (en) | 1998-07-22 |
RU2122290C1 (en) | 1998-11-20 |
EP0695484A4 (en) | 1997-09-03 |
SE9502704D0 (en) | 1995-07-27 |
BR9405751A (en) | 1995-12-05 |
CN1116889A (en) | 1996-02-14 |
JPH10508435A (en) | 1998-08-18 |
KR0177268B1 (en) | 1999-05-15 |
SG69960A1 (en) | 2000-01-25 |
SE9502704L (en) | 1995-09-29 |
FI953407A (en) | 1995-07-12 |
CN1065094C (en) | 2001-04-25 |
SE521574C2 (en) | 2003-11-11 |
EP0695484B1 (en) | 2000-07-26 |
JP3565856B2 (en) | 2004-09-15 |
FI112746B (en) | 2003-12-31 |
GB9515712D0 (en) | 1995-10-11 |
KR960700595A (en) | 1996-01-20 |
EP0695484A1 (en) | 1996-02-07 |
US5446727A (en) | 1995-08-29 |
FI953407A0 (en) | 1995-07-12 |
GB2290200A (en) | 1995-12-13 |
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