WO2002007341A3 - Systeme de radiotelecommunication cellulaire - Google Patents

Systeme de radiotelecommunication cellulaire Download PDF

Info

Publication number
WO2002007341A3
WO2002007341A3 PCT/GB2001/003185 GB0103185W WO0207341A3 WO 2002007341 A3 WO2002007341 A3 WO 2002007341A3 GB 0103185 W GB0103185 W GB 0103185W WO 0207341 A3 WO0207341 A3 WO 0207341A3
Authority
WO
WIPO (PCT)
Prior art keywords
phase
downlink signal
telecommunication system
cellular radio
time
Prior art date
Application number
PCT/GB2001/003185
Other languages
English (en)
Other versions
WO2002007341A2 (fr
Inventor
Andrew Fogg
John Leslie Haine
Original Assignee
Ip Access Ltd
Andrew Fogg
John Leslie Haine
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
Priority claimed from GB0017427A external-priority patent/GB0017427D0/en
Application filed by Ip Access Ltd, Andrew Fogg, John Leslie Haine filed Critical Ip Access Ltd
Priority to AU2001270832A priority Critical patent/AU2001270832A1/en
Publication of WO2002007341A2 publication Critical patent/WO2002007341A2/fr
Publication of WO2002007341A3 publication Critical patent/WO2002007341A3/fr

Links

Classifications

    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0676—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using random or pseudo-random delays

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un système de radiotélécommunication cellulaire comprenant une station de base pourvue de deux antennes (107, 114) au moins. Chaque antenne est conçue pour transmettre un signal descendant à une ou plusieurs unités d'abonné mobiles. Lesdits signaux descendants que transmettent les antennes (107, 114) présentent entre eux une certain décalage temporel et une certaine différence de phase, laquelle différence de phase change de temps en temps. En raison de ces différences de phase, si les signaux reçus au niveau d'une station mobile sont en anti-phase sur un intervalle de temps donné du signal descendant, il est fort peu probable que lesdits signaux soient également en anti-phase au niveau de l'intervalle de temps correspondant dans les quelques trames suivantes.
PCT/GB2001/003185 2000-07-14 2001-07-16 Systeme de radiotelecommunication cellulaire WO2002007341A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001270832A AU2001270832A1 (en) 2000-07-14 2001-07-16 Cellular radio telecommunication system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0017427A GB0017427D0 (en) 2000-07-14 2000-07-14 Cellular radio telecommunication system
GB0017427.6 2000-07-14
GB0114031A GB2365281A (en) 2000-07-14 2001-06-08 Transmit diversity in an indoor gsm cellular system comprising a base station having at least two antennas having mutual time delay and phase difference
GB0114031.8 2001-06-08

Publications (2)

Publication Number Publication Date
WO2002007341A2 WO2002007341A2 (fr) 2002-01-24
WO2002007341A3 true WO2002007341A3 (fr) 2002-05-30

Family

ID=26244667

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/003185 WO2002007341A2 (fr) 2000-07-14 2001-07-16 Systeme de radiotelecommunication cellulaire

Country Status (2)

Country Link
AU (1) AU2001270832A1 (fr)
WO (1) WO2002007341A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8886249B2 (en) 2004-07-30 2014-11-11 Airvana Lp Method and system of setting transmitter power levels

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1779625B1 (fr) 2004-07-30 2018-10-17 CommScope Technologies LLC Noeud de reseau local
WO2006010957A2 (fr) 2004-07-30 2006-02-02 Andrew Richardson Procede de transmission de signaux a partir d'un noeud de reseau local
CN101253705A (zh) 2005-09-01 2008-08-27 夏普株式会社 无线发送机及无线发送方法
CN101292441B (zh) 2005-10-31 2012-05-16 夏普株式会社 终端装置、基站装置和通信***
EP1944893B1 (fr) 2005-10-31 2020-01-01 Sharp Kabushiki Kaisha Emetteur radio, systeme de radiocommunications, et procede d'emission radio
DK2120365T3 (da) * 2005-12-20 2012-05-29 Sharp Kk Fremgangsmåde til transmissionsstyring, basisstation, mobil enhed og kommunikationssystem til forsinkelsesdiversitet
CN103354465A (zh) 2005-12-26 2013-10-16 夏普株式会社 无线发射机及无线发射方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012927A1 (fr) * 1993-11-04 1995-05-11 Nokia Telecommunications Oy Procede d'emission de signaux radio et emetteur-recepteur armt
US6034987A (en) * 1996-12-17 2000-03-07 Ericsson Inc. System for improving the quality of a received radio signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012927A1 (fr) * 1993-11-04 1995-05-11 Nokia Telecommunications Oy Procede d'emission de signaux radio et emetteur-recepteur armt
US6034987A (en) * 1996-12-17 2000-03-07 Ericsson Inc. System for improving the quality of a received radio signal

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MOGENSEN P E: "GSM BASE-STATION ANTENNA DIVERSITY USING SOFT DECISION COMBINING ON UP-LINK AND DELAYED-SIGNAL TRANSMISSION ON DOWN-LINK", PERSONAL COMMUNICATION - FREEDOM THROUGH WIRELESS TECHNOLOGY. SECAUCUS, NJ., MAY 18 - 20, 1993, PROCEEDINGS OF THE VEHICULAR TECHNOLOGY CONFERENCE, NEW YORK, IEEE, US, vol. CONF. 43, 18 May 1993 (1993-05-18), pages 611 - 616, XP000393257, ISBN: 0-7803-1267-8 *
VIJITHA WEERACKODY: "CHARACTERISTICS OF A SIMULATED FAST FADING INDOOR RADIO CHANNEL", PERSONAL COMMUNICATION - FREEDOM THROUGH WIRELESS TECHNOLOGY. SECAUCUS, NJ., MAY 18 - 20, 1993, PROCEEDINGS OF THE VEHICULAR TECHNOLOGY CONFERENCE, NEW YORK, IEEE, US, vol. CONF. 43, 18 May 1993 (1993-05-18), pages 231 - 235, XP000393165, ISBN: 0-7803-1267-8 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8886249B2 (en) 2004-07-30 2014-11-11 Airvana Lp Method and system of setting transmitter power levels

Also Published As

Publication number Publication date
WO2002007341A2 (fr) 2002-01-24
AU2001270832A1 (en) 2002-01-30

Similar Documents

Publication Publication Date Title
US5390166A (en) Method for recovering a data signal using diversity in a radio frequency, time division multiple access communication system
AU6227496A (en) Reception method and base station receiver
CA2294269A1 (fr) Procede et systeme destines a un reseau cellulaire
EP1458119A3 (fr) Système mobile cellulaire utilisant des fréquences partagées entre cellules voisines pour les opérations de changement de cellule
HK1049932A1 (en) Candidate system search and soft handoff between rfrequencies in a multi-carrier mobile communication system
WO2003058984A3 (fr) Architecture de reseau cellulaire sans fil
EP0361299A3 (fr) Système de transmission radio numérique pour réseau cellulaire utilisant la technique de l'étalement de spectre
CA2388336A1 (fr) Appareil et procede d'emission en diversite a l'aide d'au moins deux antennes
EP0933955A4 (fr) Systeme radiocellulaire permettant aux stations mobiles de communiquer par l'intermediaire des stations de base connectees via un canal radio cdma, et station de base et station mobile utilisees dans ce systeme
EP1324514A3 (fr) Répéteur appliqué dans un système de communication sans fil
WO1998006228A3 (fr) Procede permettant de determiner un mode de communication
WO2001047126A3 (fr) Station mobile dotee de deux emetteurs-recepteurs et procedes interfrequences executes avec celle-ci
EP1026834A3 (fr) Système de communication mobile avec des stations mobiles et une station de base
HUP0004841A2 (en) Cellular radio communications system, and subscriber station on the bases of cellular radio communications system, furtmer method of signal transmit on the bases of it
CA2260663A1 (fr) Architecture pour stations de base multisecteurs
WO2002007341A3 (fr) Systeme de radiotelecommunication cellulaire
WO1999034626A3 (fr) Systeme d'antenne et systeme de communication a bande etroite et procede de fonctionnement
AU724773B2 (en) Dual mode portable telephone unit
ATE202662T1 (de) Linearer offsetkompensierter hochfrequenzdetektor
WO2001099467A3 (fr) Meilleure couverture de la diversite
WO1999034523A3 (fr) Systeme de programmation de messages par voie de retour dans des systemes de communication a bande etroite, systemes et modes d'utilisation
AU722795B2 (en) Method of improving connection quality and system capacity, and a cellular radio system
AU4115599A (en) Mobile communication system and method for establishing synchronization in mobile communications
AU1867697A (en) Emitter systems for the transmission of radio signals of a given emission frequency according to a predefined transmission time protocol
AU2011600A (en) Method and communications system with dynamically adaptable subscriber units

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP