JPS55120235A - Time-division multiple mobile communication system - Google Patents
Time-division multiple mobile communication systemInfo
- 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
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.
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)
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 |
-
1979
- 1979-03-09 JP JP2795679A patent/JPS55120235A/en active Pending
Cited By (5)
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 |
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