JPS5741045A - Selective calling communication system - Google Patents
Selective calling communication systemInfo
- Publication number
- JPS5741045A JPS5741045A JP55116387A JP11638780A JPS5741045A JP S5741045 A JPS5741045 A JP S5741045A JP 55116387 A JP55116387 A JP 55116387A JP 11638780 A JP11638780 A JP 11638780A JP S5741045 A JPS5741045 A JP S5741045A
- Authority
- JP
- Japan
- Prior art keywords
- mode
- receiver
- synchronizing
- word
- receiving operation
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
PURPOSE:To reduce the power consumption and also to increase a response speed, by providing a means for changing the duty ratio of an intermittent receiving operation, on a receiver. CONSTITUTION:A selective calling signal is divided into plural groups G1-Gn, and is sent out in series. Each group contains a synchronizing word and plural calling words, and the synchronizing word is constituted of a frame synchronizing code and a group synchronizing code. A receiver executes an intermittent receiving operation of a mode B or a mode C as shown in the figure in accordance with said synchronizing code. In case of the mode C, the receiver becomes capable of receiving by the timing of the group G1 and Gk, and when a calling word is sent out by this timing from the transmission side, the response speed becomes two times as high as the mode B. Subsequently, the duty ratio of the intermittent receiving operation is changed over by writing in advance mode switching signals corresponding to the number of modes, in a P-ROM of the receiver, and selecting one of them in accordance with a signal from the transmission side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55116387A JPS5741045A (en) | 1980-08-26 | 1980-08-26 | Selective calling communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55116387A JPS5741045A (en) | 1980-08-26 | 1980-08-26 | Selective calling communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5741045A true JPS5741045A (en) | 1982-03-06 |
JPS6358417B2 JPS6358417B2 (en) | 1988-11-15 |
Family
ID=14685755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55116387A Granted JPS5741045A (en) | 1980-08-26 | 1980-08-26 | Selective calling communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5741045A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60145735A (en) * | 1984-01-09 | 1985-08-01 | Nec Corp | Battery saving system |
JPS60213154A (en) * | 1984-04-09 | 1985-10-25 | Kanda Tsushin Kogyo Kk | Data communication system |
JPS61281642A (en) * | 1985-05-22 | 1986-12-12 | Sanyo Electric Co Ltd | Remote control equipment |
JPS63180225A (en) * | 1987-01-22 | 1988-07-25 | Nippon Telegr & Teleph Corp <Ntt> | Selective call receiver |
US4783654A (en) * | 1985-01-14 | 1988-11-08 | Nec Corporation | Radio paging system capable of transmitting common information and receiver therefor |
US4818987A (en) * | 1985-12-18 | 1989-04-04 | Nec Corporation | Selective paging receiver with message display |
JPH0198332A (en) * | 1987-10-09 | 1989-04-17 | Nippon Telegr & Teleph Corp <Ntt> | Radio selective call system |
JPH01174027A (en) * | 1987-12-28 | 1989-07-10 | Matsushita Electric Ind Co Ltd | Paging receiver |
JPH02190035A (en) * | 1989-01-19 | 1990-07-26 | Fujitsu Ltd | Radio call system |
US5230084A (en) * | 1990-12-06 | 1993-07-20 | Motorola, Inc. | Selective call receiver having extended battery saving capability |
US5257019A (en) * | 1989-11-03 | 1993-10-26 | Motorola, Inc. | Satellite selective call signalling system |
JPH0946749A (en) * | 1995-07-27 | 1997-02-14 | Nec Corp | Intermittent reception circuit and intermittent reception method in selective radio call receiver |
-
1980
- 1980-08-26 JP JP55116387A patent/JPS5741045A/en active Granted
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60145735A (en) * | 1984-01-09 | 1985-08-01 | Nec Corp | Battery saving system |
JPH0369454B2 (en) * | 1984-04-09 | 1991-11-01 | Kanda Tsushin Kogyo Kk | |
JPS60213154A (en) * | 1984-04-09 | 1985-10-25 | Kanda Tsushin Kogyo Kk | Data communication system |
US4783654A (en) * | 1985-01-14 | 1988-11-08 | Nec Corporation | Radio paging system capable of transmitting common information and receiver therefor |
JPS61281642A (en) * | 1985-05-22 | 1986-12-12 | Sanyo Electric Co Ltd | Remote control equipment |
US4818987A (en) * | 1985-12-18 | 1989-04-04 | Nec Corporation | Selective paging receiver with message display |
JPS63180225A (en) * | 1987-01-22 | 1988-07-25 | Nippon Telegr & Teleph Corp <Ntt> | Selective call receiver |
JPH0198332A (en) * | 1987-10-09 | 1989-04-17 | Nippon Telegr & Teleph Corp <Ntt> | Radio selective call system |
JPH01174027A (en) * | 1987-12-28 | 1989-07-10 | Matsushita Electric Ind Co Ltd | Paging receiver |
JPH02190035A (en) * | 1989-01-19 | 1990-07-26 | Fujitsu Ltd | Radio call system |
US5257019A (en) * | 1989-11-03 | 1993-10-26 | Motorola, Inc. | Satellite selective call signalling system |
US5230084A (en) * | 1990-12-06 | 1993-07-20 | Motorola, Inc. | Selective call receiver having extended battery saving capability |
JPH0946749A (en) * | 1995-07-27 | 1997-02-14 | Nec Corp | Intermittent reception circuit and intermittent reception method in selective radio call receiver |
Also Published As
Publication number | Publication date |
---|---|
JPS6358417B2 (en) | 1988-11-15 |
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