WO2003081938A1 - Soft handoff for ofdm - Google Patents
Soft handoff for ofdm Download PDFInfo
- Publication number
- WO2003081938A1 WO2003081938A1 PCT/IB2003/000153 IB0300153W WO03081938A1 WO 2003081938 A1 WO2003081938 A1 WO 2003081938A1 IB 0300153 W IB0300153 W IB 0300153W WO 03081938 A1 WO03081938 A1 WO 03081938A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base station
- data
- ofdm
- mobile terminal
- space
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 58
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- 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
- H04B7/022—Site diversity; Macro-diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
- H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
- H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
- H04L5/0025—Spatial division following the spatial signature of the channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60333826T DE60333826D1 (en) | 2002-03-22 | 2003-01-22 | GENTLE FURTHER FOR OFDM |
KR1020097024611A KR101300977B1 (en) | 2002-03-22 | 2003-01-22 | Soft handoff for ofdm |
KR1020137010485A KR101446573B1 (en) | 2002-03-22 | 2003-01-22 | Soft handoff for ofdm |
EP03701632A EP1491065B1 (en) | 2002-03-22 | 2003-01-22 | Soft handoff for ofdm |
KR1020137010506A KR101434945B1 (en) | 2002-03-22 | 2003-01-22 | Soft handoff for ofdm |
KR1020147004050A KR20140027564A (en) | 2002-03-22 | 2003-01-22 | Soft handoff for ofdm |
KR1020107018645A KR101300947B1 (en) | 2002-03-22 | 2003-01-22 | Soft handoff for ofdm |
AU2003202721A AU2003202721A1 (en) | 2002-03-22 | 2003-01-22 | Soft handoff for ofdm |
KR10-2004-7015054A KR20040089744A (en) | 2002-03-22 | 2003-01-22 | Soft handoff for ofdm |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/104,399 | 2002-03-22 | ||
US10/104,399 US7042858B1 (en) | 2002-03-22 | 2002-03-22 | Soft handoff for OFDM |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003081938A1 true WO2003081938A1 (en) | 2003-10-02 |
Family
ID=28452380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2003/000153 WO2003081938A1 (en) | 2002-03-22 | 2003-01-22 | Soft handoff for ofdm |
Country Status (7)
Country | Link |
---|---|
US (5) | US7042858B1 (en) |
EP (1) | EP1491065B1 (en) |
KR (6) | KR101434945B1 (en) |
CN (1) | CN100579096C (en) |
AU (1) | AU2003202721A1 (en) |
DE (1) | DE60333826D1 (en) |
WO (1) | WO2003081938A1 (en) |
Cited By (55)
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WO2004036950A1 (en) * | 2002-10-17 | 2004-04-29 | Nokia Corporation | Transmission method in a communication system |
FR2854009A1 (en) * | 2003-04-17 | 2004-10-22 | Wavecom | Multi-carrier signal constructing method for cellular network, involves inserting null energy component in data units and positioning energy components at locations corresponding to location of reference components |
WO2005055507A1 (en) * | 2003-12-03 | 2005-06-16 | Nokia Corporation | Exploiting selection diversity in communications systems with non-orthonormal matrix and vector modulation |
EP1594330A1 (en) * | 2004-05-04 | 2005-11-09 | Alcatel | Methods for terminal assisted coordinated radio serving and interference avoidance in OFDM mobile communication system |
WO2005119953A1 (en) | 2004-06-01 | 2005-12-15 | Huawei Technologies Co., Ltd. | Method for implementing channel estimate in orthogonal frequency division multiplexing (ofdm) system |
EP1608197A1 (en) * | 2004-06-15 | 2005-12-21 | Samsung Electronics Co., Ltd. | System and method for supporting soft handover in a broadband wireless access communication system |
WO2006068347A1 (en) * | 2004-12-21 | 2006-06-29 | Electronics And Telecommunications Research Institute | Method and apparatus for estimating timing error and frequency offset of hpi system |
WO2006113063A1 (en) * | 2005-04-14 | 2006-10-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for channel estimation in distributed transmit diversity systems |
EP1768271A1 (en) * | 2004-08-11 | 2007-03-28 | Matsushita Electric Industrial Co., Ltd. | Communication system, base station control device, and base station device |
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EP1915019A1 (en) * | 2006-10-18 | 2008-04-23 | NEC Corporation | Handover control system, method for the same, and mobile communication system and radio base station using the same |
EP1916783A1 (en) * | 2005-08-01 | 2008-04-30 | Sharp Kabushiki Kaisha | Cellular mobile communication system, base station transmission device and mobile station reception device in cellular mobile communication system, and base station selection control method in cellular mobile communication system |
KR100833703B1 (en) * | 2006-06-30 | 2008-05-29 | 노키아 코포레이션 | Exploiting selection diversity in communications systems with non-orthonormal matrix and vector modulation |
KR100842649B1 (en) | 2004-07-02 | 2008-06-30 | 삼성전자주식회사 | Apparatus and method for supporting a soft handover in a broadband wireless access communication system |
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KR20100111728A (en) | 2010-10-15 |
KR101434945B1 (en) | 2014-08-28 |
US20140023046A1 (en) | 2014-01-23 |
CN1653844A (en) | 2005-08-10 |
US9414279B2 (en) | 2016-08-09 |
AU2003202721A1 (en) | 2003-10-08 |
KR101300947B1 (en) | 2013-08-27 |
KR20140027564A (en) | 2014-03-06 |
KR101300977B1 (en) | 2013-08-27 |
KR20040089744A (en) | 2004-10-21 |
DE60333826D1 (en) | 2010-09-30 |
KR101446573B1 (en) | 2014-10-07 |
US7042858B1 (en) | 2006-05-09 |
KR20130064811A (en) | 2013-06-18 |
EP1491065A1 (en) | 2004-12-29 |
US20090103494A1 (en) | 2009-04-23 |
KR20090128576A (en) | 2009-12-15 |
US20060182063A1 (en) | 2006-08-17 |
US8619713B2 (en) | 2013-12-31 |
US20110096751A1 (en) | 2011-04-28 |
US7864735B2 (en) | 2011-01-04 |
KR20130054446A (en) | 2013-05-24 |
CN100579096C (en) | 2010-01-06 |
EP1491065B1 (en) | 2010-08-18 |
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