CA2030607C - Methode pour maintenir une connexion etablie dans un systeme radio mobile comportant a la fois des canaux radio analogiques et numeriques - Google Patents

Methode pour maintenir une connexion etablie dans un systeme radio mobile comportant a la fois des canaux radio analogiques et numeriques Download PDF

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Publication number
CA2030607C
CA2030607C CA002030607A CA2030607A CA2030607C CA 2030607 C CA2030607 C CA 2030607C CA 002030607 A CA002030607 A CA 002030607A CA 2030607 A CA2030607 A CA 2030607A CA 2030607 C CA2030607 C CA 2030607C
Authority
CA
Canada
Prior art keywords
radio channel
digital
radio
analog
channel
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 - Fee Related
Application number
CA002030607A
Other languages
English (en)
Other versions
CA2030607A1 (fr
Inventor
Jan Erik Ake Steiner Dahlin
Jan Erik Uddenfeldt
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 SE8901385A external-priority patent/SE8901385D0/xx
Priority claimed from US07/371,126 external-priority patent/US5042082A/en
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of CA2030607A1 publication Critical patent/CA2030607A1/fr
Application granted granted Critical
Publication of CA2030607C publication Critical patent/CA2030607C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • 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
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • 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
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/208—Arrangements for detecting or preventing errors in the information received using signal quality detector involving signal re-encoding
    • 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
    • H04L25/0212—Channel estimation of impulse response
    • H04L25/0216—Channel estimation of impulse response with estimation of channel length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
CA002030607A 1989-04-17 1990-03-28 Methode pour maintenir une connexion etablie dans un systeme radio mobile comportant a la fois des canaux radio analogiques et numeriques Expired - Fee Related CA2030607C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE8901385-8 1989-04-17
SE8901385A SE8901385D0 (sv) 1989-04-17 1989-04-17 Foerarande i mobilradiosystem
US07/371,126 US5042082A (en) 1989-06-26 1989-06-26 Mobile assisted handoff
US371126 1989-06-26
PCT/SE1990/000199 WO1990013187A1 (fr) 1989-04-17 1990-03-28 Procede pour assurer une connexion etablie dans un systeme de radio mobile comprenant des canaux radio analogiques et numeriques

Publications (2)

Publication Number Publication Date
CA2030607A1 CA2030607A1 (fr) 1990-10-18
CA2030607C true CA2030607C (fr) 2001-08-14

Family

ID=26660492

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002030607A Expired - Fee Related CA2030607C (fr) 1989-04-17 1990-03-28 Methode pour maintenir une connexion etablie dans un systeme radio mobile comportant a la fois des canaux radio analogiques et numeriques

Country Status (6)

Country Link
KR (1) KR950013303B1 (fr)
AU (1) AU625128B2 (fr)
BR (1) BR9006720A (fr)
CA (1) CA2030607C (fr)
NZ (1) NZ233178A (fr)
WO (1) WO1990013187A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8802229D0 (sv) 1988-06-14 1988-06-14 Ericsson Telefon Ab L M Forfarande vid mobilradiostation
US20010050943A1 (en) 1989-08-03 2001-12-13 Mahany Ronald L. Radio frequency communication network having adaptive communication parameters
JP2749456B2 (ja) * 1991-03-06 1998-05-13 三菱電機株式会社 無線通信機
EP0917308A1 (fr) * 1992-04-17 1999-05-19 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Changement de cellule assisté par le mobile avec accès multiple par division de codes
SE470416B (sv) * 1992-07-03 1994-02-14 Ericsson Telefon Ab L M Förfarande för att registrera trafikdata i ett telesystem
MX9304729A (es) * 1992-08-11 1994-02-28 Ericsson Telefon Ab L M Rearreglo de canales
US5627879A (en) * 1992-09-17 1997-05-06 Adc Telecommunications, Inc. Cellular communications system with centralized base stations and distributed antenna units
US5603081A (en) * 1993-11-01 1997-02-11 Telefonaktiebolaget Lm Ericsson Method for communicating in a wireless communication system
MX9307243A (es) * 1992-11-24 1994-05-31 Ericsson Telefon Ab L M Reintento analogico.
US5432843A (en) * 1993-08-02 1995-07-11 Motorola Inc. Method of performing handoff in a cellular communication system
US5515366A (en) * 1994-11-17 1996-05-07 International Business Machines Corporation Method and apparatus for direct communication in a TDMA radio communication system
US5761240A (en) * 1996-02-06 1998-06-02 Ericsson Inc. Method and apparatus for determining an optical communications channel without loss of channel messages on a current communications channel
US5878349A (en) * 1996-07-16 1999-03-02 Telefonaktiebolaget L M Ericsson Call set-up on 800 MHz analog voice channel from 1900 MHZ digital control channel
US6021328A (en) * 1996-12-19 2000-02-01 Northern Telecom Limited Radio link quality handoff trigger
US6047191A (en) * 1997-02-14 2000-04-04 Telefonaktiebolaget Lm Ericsson Method of selecting a voice channel in a radio telecommunications network
EP0954142A1 (fr) * 1998-04-28 1999-11-03 Lucent Technologies Inc. Estimation de canal à l'aide d'une technique de fenêtre coulissante
US6459907B1 (en) * 1999-07-27 2002-10-01 Ericsson Inc. Systems and methods for channel selection for facsimile communication over a wireless communication network

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000775A1 (fr) * 1984-07-13 1986-01-30 Motorola, Inc. Systeme radiotelephonique cellulaire de transmission vocale et de donnees
EP0219559B1 (fr) * 1985-10-17 1990-09-05 ANT Nachrichtentechnik GmbH Système radio mobile pour la transmission de signaux aussi bien analogiques que numériques
DE3607687A1 (de) * 1986-03-08 1987-09-10 Philips Patentverwaltung Verfahren und schaltungsanordnung zum weiterschalten einer funkverbindung in eine andere funkzelle eines digitalen funkuebertragungssystems
DE3854465T2 (de) * 1987-11-27 1996-05-02 Nippon Electric Co Verfahren zum Umschalten in einem digitalen Zellularmobilkommunikationssystem und mobile Einheit.

Also Published As

Publication number Publication date
CA2030607A1 (fr) 1990-10-18
AU625128B2 (en) 1992-07-02
BR9006720A (pt) 1991-08-06
KR920700503A (ko) 1992-02-19
KR950013303B1 (ko) 1995-11-02
WO1990013187A1 (fr) 1990-11-01
NZ233178A (en) 1992-06-25
AU5530090A (en) 1990-11-16

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Legal Events

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EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20080328