ZA859393B - A car telephone system and radio device - Google Patents

A car telephone system and radio device

Info

Publication number
ZA859393B
ZA859393B ZA859393A ZA859393A ZA859393B ZA 859393 B ZA859393 B ZA 859393B ZA 859393 A ZA859393 A ZA 859393A ZA 859393 A ZA859393 A ZA 859393A ZA 859393 B ZA859393 B ZA 859393B
Authority
ZA
South Africa
Prior art keywords
telephone system
works
active
transmitting power
mobile
Prior art date
Application number
ZA859393A
Inventor
Ludwig Hofmann
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of ZA859393B publication Critical patent/ZA859393B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • 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
    • H04B7/2621—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using frequency division multiple access [FDMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Telephone Function (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Dental Preparations (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

1. Mobile telephone system with stationary and mobile subscriber stations in the wide area of a land mobile network, consisting of a plurality of base stations in a mutual spatial arrangement, characterized by two radio sections in the respective radio equipment, of which one is active in the VHF region in thinly populated areas and works with a high transmitting power, and the other is active in the UHF range in densely populated areas and works with a relatively low transmitting power, and by a controller which monitors both radio sections according to predetermined criteria and activates a switch-over when necessary, and which at the same time activates the data signalling between base station and mobile station.
ZA859393A 1984-12-10 1985-12-09 A car telephone system and radio device ZA859393B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843444989 DE3444989A1 (en) 1984-12-10 1984-12-10 CAR TELEPHONE SYSTEM

Publications (1)

Publication Number Publication Date
ZA859393B true ZA859393B (en) 1986-08-27

Family

ID=6252372

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA859393A ZA859393B (en) 1984-12-10 1985-12-09 A car telephone system and radio device

Country Status (7)

Country Link
EP (1) EP0186004B1 (en)
AT (1) ATE48215T1 (en)
DE (2) DE3444989A1 (en)
DK (1) DK163161C (en)
FI (1) FI79214C (en)
NO (1) NO169315C (en)
ZA (1) ZA859393B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201866B (en) * 1987-03-04 1991-04-17 Michael Victor Rodrigues Improvements in or relating to cellular telephone apparatus and a cellular communications system
DE3721889A1 (en) † 1987-07-02 1989-01-12 Standard Elektrik Lorenz Ag COMPUTER CONTROLLED SUBSCRIBER DEVICE FOR OPERATION IN TELECOMMUNICATION NETWORKS, IN PARTICULAR MOBILE RADIO NETWORKS, WITH DIFFERENT SYSTEM TECHNOLOGY
US4989230A (en) * 1988-09-23 1991-01-29 Motorola, Inc. Cellular cordless telephone
DE4118992A1 (en) * 1991-06-08 1992-12-10 Aeg Mobile Communication MOBILE PHONE ARRANGEMENT
DE4118994A1 (en) * 1991-06-08 1992-12-10 Aeg Mobile Communication Mobile subscriber telephone network - allows access to two different networks using card inserted in hand set reader or using cards in separate reader

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2659570C2 (en) * 1976-12-30 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Telephone and data network for fixed and mobile subscriber stations
DE2805420A1 (en) 1978-02-09 1979-08-16 Bosch Gmbh Robert RADIO SYSTEM FOR TRANSMISSION OF MESSAGES
US4355411A (en) * 1980-03-24 1982-10-19 Bell Telephone Laboratories, Incorporated Technique for efficient spectrum utilization in mobile radio systems using space diversity
DE3321997A1 (en) * 1982-12-03 1984-06-14 ANT Nachrichtentechnik GmbH, 7150 Backnang RADIO SYSTEM

Also Published As

Publication number Publication date
EP0186004B1 (en) 1989-11-23
NO169315C (en) 1992-06-03
FI79214C (en) 1989-11-10
EP0186004A1 (en) 1986-07-02
NO854947L (en) 1986-06-11
DE3574442D1 (en) 1989-12-28
FI854853A (en) 1986-06-11
FI79214B (en) 1989-07-31
DK568785D0 (en) 1985-12-09
DK568785A (en) 1986-06-11
DK163161B (en) 1992-01-27
DK163161C (en) 1992-06-22
NO169315B (en) 1992-02-24
FI854853A0 (en) 1985-12-09
ATE48215T1 (en) 1989-12-15
DE3444989A1 (en) 1986-06-12

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