NZ233178A - Mobile radio; digital transmission hands over to analog when performance degrades - Google Patents

Mobile radio; digital transmission hands over to analog when performance degrades

Info

Publication number
NZ233178A
NZ233178A NZ233178A NZ23317890A NZ233178A NZ 233178 A NZ233178 A NZ 233178A NZ 233178 A NZ233178 A NZ 233178A NZ 23317890 A NZ23317890 A NZ 23317890A NZ 233178 A NZ233178 A NZ 233178A
Authority
NZ
New Zealand
Prior art keywords
digital
radio
channel
radio channel
mobile
Prior art date
Application number
NZ233178A
Other languages
English (en)
Inventor
Jan Erik Ake Steinar Dahlin
Jan Erik Uddenfeldt
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of NZ233178A publication Critical patent/NZ233178A/en

Links

Classifications

    • 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
    • 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
    • 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)
NZ233178A 1989-04-17 1990-04-03 Mobile radio; digital transmission hands over to analog when performance degrades NZ233178A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (1)

Publication Number Publication Date
NZ233178A true NZ233178A (en) 1992-06-25

Family

ID=26660492

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ233178A NZ233178A (en) 1989-04-17 1990-04-03 Mobile radio; digital transmission hands over to analog when performance degrades

Country Status (6)

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

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
EP0566551B1 (en) * 1992-04-17 1999-08-04 Telefonaktiebolaget L M Ericsson Mobile assisted handover using CDMA
SE470416B (sv) * 1992-07-03 1994-02-14 Ericsson Telefon Ab L M Förfarande för att registrera trafikdata i ett telesystem
EP0614598B1 (en) * 1992-08-11 1999-03-17 Telefonaktiebolaget Lm Ericsson Rearranging channels
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 (en) * 1998-04-28 1999-11-03 Lucent Technologies Inc. Channel estimation using a sliding window technique
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
DE3574217D1 (en) * 1984-07-13 1989-12-14 Motorola Inc Cellular voice and data radiotelephone system
DE3579596D1 (de) * 1985-10-17 1990-10-11 Ant Nachrichtentech Mobilfunksystem fuer die uebertragung sowohl digitaler als auch analoger signale.
DE3607687A1 (de) * 1986-03-08 1987-09-10 Philips Patentverwaltung Verfahren und schaltungsanordnung zum weiterschalten einer funkverbindung in eine andere funkzelle eines digitalen funkuebertragungssystems
EP0318033B1 (en) * 1987-11-27 1995-09-13 Nec Corporation Handoff method for cellular digital mobile communication system and mobile station

Also Published As

Publication number Publication date
WO1990013187A1 (en) 1990-11-01
KR920700503A (ko) 1992-02-19
AU5530090A (en) 1990-11-16
CA2030607C (en) 2001-08-14
KR950013303B1 (ko) 1995-11-02
CA2030607A1 (en) 1990-10-18
BR9006720A (pt) 1991-08-06
AU625128B2 (en) 1992-07-02

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