JPS55120235A - Time-division multiple mobile communication system - Google Patents

Time-division multiple mobile communication system

Info

Publication number
JPS55120235A
JPS55120235A JP2795679A JP2795679A JPS55120235A JP S55120235 A JPS55120235 A JP S55120235A JP 2795679 A JP2795679 A JP 2795679A JP 2795679 A JP2795679 A JP 2795679A JP S55120235 A JPS55120235 A JP S55120235A
Authority
JP
Japan
Prior art keywords
time
signals
receivers
transmitter
constitution
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.)
Pending
Application number
JP2795679A
Other languages
Japanese (ja)
Inventor
Kota Kinoshita
Masaharu Hata
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2795679A priority Critical patent/JPS55120235A/en
Publication of JPS55120235A publication Critical patent/JPS55120235A/en
Pending 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
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To economize a radio equipment while simplifying circuit control such as reduction in the number of radio equipments of a ground station, removal of a transmitter-combined unit and receiver-combined unit, and simplification the local oscillation of each mobile equipment, by making it possible to transmit many signals by one carrier by time-division multiplexing. CONSTITUTION:On a base station, input signals 34-36 are PCM-coded 47-49 and the outputs of them, after being multiplexed 51 in time-dividion mode under control 52, are mixed with conrol time slots from controller 52 and then sent out to cavity resonator 37. The output of receiver 27, on the other hand, is supplied to multiplex separator circuit 56 to exercise control 52 over gate circuits 57-59, and consequently burstlike signals from the mobile equipment are separated by time slots, supplied to time expanders 61-63, an decoded 64-66 to obtain sound output at terminals 31-33. Because of the constitution like this, the number of transmitters and receivers is reduced, transmitter-receivers can be omitted, and the facilities of the base station can remarkably be economized. This applies to mobile equipments similarly.
JP2795679A 1979-03-09 1979-03-09 Time-division multiple mobile communication system Pending JPS55120235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2795679A JPS55120235A (en) 1979-03-09 1979-03-09 Time-division multiple mobile communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2795679A JPS55120235A (en) 1979-03-09 1979-03-09 Time-division multiple mobile communication system

Publications (1)

Publication Number Publication Date
JPS55120235A true JPS55120235A (en) 1980-09-16

Family

ID=12235333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2795679A Pending JPS55120235A (en) 1979-03-09 1979-03-09 Time-division multiple mobile communication system

Country Status (1)

Country Link
JP (1) JPS55120235A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116444A (en) * 1981-01-12 1982-07-20 Fujitsu Ten Ltd Communication system for communication between subordinate station and mobile station
JPS60150345A (en) * 1983-09-07 1985-08-08 ブリテイシユ・テレコミユニケ−シヨンズ・パブリツク・リミテツド・カンパニ One point vs. multipoint communicating method and device
JPS60248039A (en) * 1984-05-23 1985-12-07 Nec Corp Digital communication system
JPH03219729A (en) * 1989-07-24 1991-09-27 American Teleph & Telegr Co <Att> System for transmitting and/or receiving electromagnetic radiation using resonant cavity made of high tc superconducting material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116444A (en) * 1981-01-12 1982-07-20 Fujitsu Ten Ltd Communication system for communication between subordinate station and mobile station
JPH0124379B2 (en) * 1981-01-12 1989-05-11 Fujitsu Ten Ltd
JPS60150345A (en) * 1983-09-07 1985-08-08 ブリテイシユ・テレコミユニケ−シヨンズ・パブリツク・リミテツド・カンパニ One point vs. multipoint communicating method and device
JPS60248039A (en) * 1984-05-23 1985-12-07 Nec Corp Digital communication system
JPH03219729A (en) * 1989-07-24 1991-09-27 American Teleph & Telegr Co <Att> System for transmitting and/or receiving electromagnetic radiation using resonant cavity made of high tc superconducting material

Similar Documents

Publication Publication Date Title
JPS6471344A (en) Radio communication system using synchronized frequency hopping transmission
CA2110029A1 (en) Mobile Radio Communication System
GB2114402B (en) Frequency-hopping radio communication system
EP0111411A3 (en) Communications systems
JPS55120235A (en) Time-division multiple mobile communication system
FR2347839A1 (en) Duplex mode radio telephone system - employs variable switching delay dependent on signal quality for retransmission of signal
SE9603596D0 (en) Radio Telephone Device Performing Room Diversity Reception to Communicate with Base Stations in a TDMA Radio Communication System
JPS6457835A (en) Time division mobile multiplex communication system
JPS5533332A (en) Subscriber&#39;s radio communication system
DE3462651D1 (en) Switching system
JPS5531311A (en) Direct trunk setting system for multi-channel radio communication system
JPS5728494A (en) Private branch of exchange system
JPS55158750A (en) Order circuit forming system for time-division multiple phase modulation multi-directional ratio communication system
JP3192870B2 (en) Cordless telephone
JPS56156032A (en) Mobile communication system
JPS5679540A (en) Switching system of transmission and reception
JPS5455306A (en) Multi-address communication system of time-division switchboard
JPS57162540A (en) Mobile radio communication system
JPS5783939A (en) Time-division multidirectional multiplex communication device
JPS5460806A (en) Exchange system
JPS5784630A (en) Radio communication system
JPS577651A (en) Control system for data communication
JPS5733861A (en) Radiotelephony exchange system for rural place
JPS55143864A (en) Remote test system
JPS5793740A (en) Mobile communication system