CA2263187A1 - Cdma system with dynamic multiple pilot channel assignment - Google Patents

Cdma system with dynamic multiple pilot channel assignment Download PDF

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Publication number
CA2263187A1
CA2263187A1 CA002263187A CA2263187A CA2263187A1 CA 2263187 A1 CA2263187 A1 CA 2263187A1 CA 002263187 A CA002263187 A CA 002263187A CA 2263187 A CA2263187 A CA 2263187A CA 2263187 A1 CA2263187 A1 CA 2263187A1
Authority
CA
Canada
Prior art keywords
pilot channel
channel assignment
cdma system
multiple pilot
dynamic multiple
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.)
Granted
Application number
CA002263187A
Other languages
French (fr)
Other versions
CA2263187C (en
Inventor
Toshifumi Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of CA2263187A1 publication Critical patent/CA2263187A1/en
Application granted granted Critical
Publication of CA2263187C publication Critical patent/CA2263187C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/2637—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for logical channel control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas

Abstract

A cellular system using a code division multiple access (CDMA) scheme includes N (N is a positive integer) pilot channels and M (M is a positive integer) data channels. The pilot channels are used for transmitting reference signals whose transmission signals are known in advance. The data channels are used for transmitting information. Each of the M data channels is made to correspond to one or a plurality of said N pilot channels.
CA 2263187 1998-03-04 1999-02-26 Cdma system with dynamic multiple pilot channel assignment Expired - Fee Related CA2263187C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP051656/1998 1998-03-04
JP5165698A JP3266091B2 (en) 1998-03-04 1998-03-04 Cellular system

Publications (2)

Publication Number Publication Date
CA2263187A1 true CA2263187A1 (en) 1999-09-04
CA2263187C CA2263187C (en) 2004-08-03

Family

ID=12892930

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2263187 Expired - Fee Related CA2263187C (en) 1998-03-04 1999-02-26 Cdma system with dynamic multiple pilot channel assignment

Country Status (7)

Country Link
US (2) US7072325B1 (en)
EP (1) EP0940937B1 (en)
JP (1) JP3266091B2 (en)
KR (1) KR100333426B1 (en)
CN (1) CN1118980C (en)
CA (1) CA2263187C (en)
DE (1) DE69917104T2 (en)

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CN1172460C (en) * 1999-09-29 2004-10-20 三星电子株式会社 System and method for compensating timing error using pilot symbol in OFDM CDMA communication system
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US6545990B1 (en) * 1999-12-20 2003-04-08 Tantivy Communications, Inc. Method and apparatus for a spectrally compliant cellular communication system
US8463255B2 (en) 1999-12-20 2013-06-11 Ipr Licensing, Inc. Method and apparatus for a spectrally compliant cellular communication system
JP2001339758A (en) * 2000-05-26 2001-12-07 Matsushita Electric Ind Co Ltd Radio base station apparatus and radio communication method
US8363744B2 (en) 2001-06-10 2013-01-29 Aloft Media, Llc Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks
JP3583353B2 (en) * 2000-07-03 2004-11-04 松下電器産業株式会社 Communication terminal device and base station device
GB0031841D0 (en) 2000-12-29 2001-02-14 Nokia Networks Oy Interference power estimation for adaptive antenna system
GB0031834D0 (en) 2000-12-29 2001-02-14 Nokia Networks Oy Parameter estimation for adaptive antenna system
US20020118783A1 (en) * 2001-02-26 2002-08-29 Peter Cripps Smart antenna based spectrum multiplexing using a pilot signal
JP3714406B2 (en) * 2001-04-27 2005-11-09 日本電気株式会社 Transmission power control circuit using W-CDMA system
JP3575437B2 (en) * 2001-05-10 2004-10-13 日本電気株式会社 Directivity control device
CA2447777A1 (en) * 2001-05-31 2002-12-12 Magnolia Broadband, Inc. Communication device with smart antenna using a quality-indication signal
US8249187B2 (en) 2002-05-09 2012-08-21 Google Inc. System, method and apparatus for mobile transmit diversity using symmetric phase difference
JP2004248162A (en) * 2003-02-17 2004-09-02 Kyocera Corp Base station device
US7123944B2 (en) * 2003-12-19 2006-10-17 Samsung Electronics Co., Ltd. Apparatus and method for controlling auxiliary pilot channel in a CDMA2000 wireless network
CN101112017B (en) * 2005-02-03 2011-06-01 富士通株式会社 Radio communication system and its method
US8868118B2 (en) * 2005-04-08 2014-10-21 Qualcomm Incorporated Multiplexing on the reverse link feedbacks for multiple forward link frequencies
US7570453B2 (en) * 2005-12-07 2009-08-04 Samsung Electronics Co., Ltd. Method and apparatus reducing data damage from mechanical shock in a hard disk drive
US8243850B2 (en) * 2006-10-24 2012-08-14 Samsung Electronics Co., Ltd. Method and system for generating reference signals in a wireless communication system
JP2007295627A (en) * 2007-07-27 2007-11-08 Kyocera Corp Wireless base station apparatus and antenna directivity control method
CA2752570C (en) * 2009-03-03 2016-01-26 Ntt Docomo, Inc. Absorbed power measuring method, local average absorbed power measuring method, local average absorbed power calculating apparatus, and local average absorbed power calculating program
JP2010161782A (en) * 2010-02-09 2010-07-22 Kyocera Corp Wireless base station
US9253769B2 (en) * 2011-03-03 2016-02-02 Telefonaktiebolaget L M Ericsson (Publ) Pilot signal assignment

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JP2991862B2 (en) 1992-06-29 1999-12-20 三菱電機株式会社 Transmission power control device and system in mobile communication
US5559789A (en) * 1994-01-31 1996-09-24 Matsushita Electric Industrial Co., Ltd. CDMA/TDD Radio Communication System
US5491837A (en) * 1994-03-07 1996-02-13 Ericsson Inc. Method and system for channel allocation using power control and mobile-assisted handover measurements
JP3323698B2 (en) 1994-07-20 2002-09-09 株式会社日立製作所 Mobile station and detection method for CDMA mobile communication system
US5809083A (en) * 1994-11-23 1998-09-15 At&T Wireless Services, Inc. Differentially encoded pilot word system and method for wireless transmissions of digital data
GB2295524A (en) * 1994-11-28 1996-05-29 Northern Telecom Ltd Beamed antenna system for a cellular radio base station
DE19506439A1 (en) 1995-02-24 1996-08-29 Sel Alcatel Ag Allocation of a carrier frequency in an SDMA radio system
FI98171C (en) * 1995-05-24 1997-04-25 Nokia Telecommunications Oy Procedure for transmitting pilot channels and cellular radio systems
FI98172C (en) * 1995-05-24 1997-04-25 Nokia Telecommunications Oy Method for transmitting a pilot signal and a cellular radio system
JP2785812B2 (en) 1995-07-19 1998-08-13 日本電気株式会社 FDD / CDMA transmission / reception system
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JP2934185B2 (en) * 1996-03-15 1999-08-16 松下電器産業株式会社 CDMA cellular radio base station apparatus, mobile station apparatus, and transmission method
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US5943331A (en) * 1997-02-28 1999-08-24 Interdigital Technology Corporation Orthogonal code synchronization system and method for spread spectrum CDMA communications
SE9702408L (en) * 1997-06-24 1998-12-25 Ericsson Telefon Ab L M Sectorization of a cellular CDMA system
US6038263A (en) 1997-07-31 2000-03-14 Motorola, Inc. Method and apparatus for transmitting signals in a communication system
US6141542A (en) * 1997-07-31 2000-10-31 Motorola, Inc. Method and apparatus for controlling transmit diversity in a communication system
US6285655B1 (en) * 1997-09-08 2001-09-04 Qualcomm Inc. Method and apparatus for providing orthogonal spot beams, sectors, and picocells
US6307840B1 (en) * 1997-09-19 2001-10-23 Qualcomm Incorporated Mobile station assisted timing synchronization in CDMA communication system
US6574211B2 (en) * 1997-11-03 2003-06-03 Qualcomm Incorporated Method and apparatus for high rate packet data transmission

Also Published As

Publication number Publication date
KR19990077589A (en) 1999-10-25
DE69917104D1 (en) 2004-06-17
CN1118980C (en) 2003-08-20
US7609679B2 (en) 2009-10-27
CA2263187C (en) 2004-08-03
CN1236238A (en) 1999-11-24
EP0940937A2 (en) 1999-09-08
JP3266091B2 (en) 2002-03-18
EP0940937A3 (en) 2002-04-24
EP0940937B1 (en) 2004-05-12
JPH11252002A (en) 1999-09-17
US20050083875A1 (en) 2005-04-21
DE69917104T2 (en) 2005-05-12
KR100333426B1 (en) 2002-04-18
US7072325B1 (en) 2006-07-04

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Effective date: 20140226