WO1992011717A1 - Systeme de transmission de donnees - Google Patents

Systeme de transmission de donnees Download PDF

Info

Publication number
WO1992011717A1
WO1992011717A1 PCT/JP1991/001746 JP9101746W WO9211717A1 WO 1992011717 A1 WO1992011717 A1 WO 1992011717A1 JP 9101746 W JP9101746 W JP 9101746W WO 9211717 A1 WO9211717 A1 WO 9211717A1
Authority
WO
WIPO (PCT)
Prior art keywords
power line
data
communication
wireless communication
line carrier
Prior art date
Application number
PCT/JP1991/001746
Other languages
English (en)
Japanese (ja)
Inventor
Tooru Kayama
Original Assignee
Kabushiki Kaisha Csk
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 Kabushiki Kaisha Csk filed Critical Kabushiki Kaisha Csk
Publication of WO1992011717A1 publication Critical patent/WO1992011717A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/544—Setting up communications; Call and signalling arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5408—Methods of transmitting or receiving signals via power distribution lines using protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5445—Local network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals

Definitions

  • the present invention relates to a data transmission system, and more particularly, to a data transmission system that realizes a wireless communication and a local area network (LAN) system in a wireless dead zone where radio waves do not reach.
  • LAN local area network
  • LAN systems and the like have been used as office communications within a company as a communication network in a limited area, such as data communications such as office automation, factory automation, and databases.
  • Introduction capacity is growing rapidly.
  • a wireless communication system that wirelessly performs data communication between a wireless relay station and a data processing terminal enables bidirectional data communication in most areas of a large city. It is becoming.
  • an object of the present invention is to provide a data transmission system that can realize wireless data communication using existing equipment and can be easily installed even in a wireless communication dead zone area. .
  • a data transmission system provides a wireless communication system in which a power line carrier device on one side of a master is combined with a mouth communication device and a wireless communication protocol device. And a slave system that includes a power line carrier on the slave side and a mouth-to-culp-to-kernel converter and sends and receives data to and from a data processing terminal.
  • transmission and reception of wireless communication are performed by a master system in which a local protocol converter and a wireless communication protocol converter are combined with a master power line carrier, and a slave power line carrier and a local protocol converter are used.
  • FIG. 1 is a diagram showing an outline of a data transmission system according to an embodiment of the present invention
  • FIG. 2 is a diagram showing a configuration of a master system and a slave system according to the embodiment of the present invention
  • FIG. FIG. 4 is a block diagram for explaining the function of the slave system according to the embodiment of the present invention.
  • FIG. 1 is a diagram showing an outline of a data transmission system according to an embodiment of the present invention
  • FIG. 2 is a diagram showing a configuration of a master system and a slave system according to an embodiment of the present invention.
  • the data transmission system is a data transmission system which is provided between a radio relay station (not shown) and an existing power line 11 laid in an office or the like by radio waves.
  • —It consists of a master system 12 for transmitting and receiving in the evening, and a slave system 14 for transmitting and receiving data between the power line 11 and the data processing terminals 13,.
  • the master system 12 includes an antenna 15 for transmitting and receiving data by radio waves.
  • the master system 12 is installed, for example, in a corner of a building having a high electrolytic strength, and the power line 11 is connected to an outlet 16. It is connected by inserting plug 17 into.
  • the slave system 14 is connected to the power line 11 by plugging the plug 18 into the outlet 16, and the data processing terminal 13 is connected to the power line 19 via the power line 19 and the signal line 20. ing.
  • the master system 12 includes a wireless communication modem 21 having an antenna 15, a wireless communication protocol converter 22, a local protocol converter 23, and a power line on the master side. It is composed of a transfer device 24 and the like.
  • the slave system 14 includes a local protocol converter 25 on the data processing terminal side and a power line carrier 21 on the slave side.
  • the power line carrier devices 24 and 26 on the mass and slave sides are supplied with AC 100 V voltage of 50 or 60 cycles from the power lines.
  • An interface between the wireless communication modem 21 and the wireless communication protocol converter 22 is performed by RS232C, and a current of 110 mA at a DC voltage of 9 V is applied. Supplied to the wireless communication modem 21.
  • the wireless communication modem 21 is a device that carries out transmission of various data on a medium called radio waves.
  • the communication method between the wireless communication modems uses a two-frequency simplex method, and the modulation and demodulation method uses a frequency shift keying (FSK) method.
  • the interface with the terminal is RS-232C as standard, and the communication procedure is a non-procedure without the terminal itself having a transmission control function. Note that the wireless communication modem 21 may be integrated with the wireless communication port Tocolba overnight device 22.
  • the wireless communication protocol transmission device 22 interfaces with the wireless communication modem 21 and the RS-232C in a non-procedural manner, and includes all wireless communication protocols and temporarily transmits the data. This device has a function of buffering data.
  • the wireless communication protocol device 22 is also a device that performs linkage with the local protocol converter 23 and controls data output to the power line carrier 24 on the master side.
  • the master-side power line carrier 24 is a device that transmits and receives data using the existing power line 11 laid in a general office or home.
  • the transmission method of this device is a special carrier method used on unfiltered power lines, which has been stipulated in the Radio Law, and the modulation and demodulation method is the SS (Spread Spectrum) method.
  • the SS system is one of the digital modulation systems that has begun to be put into practical use in recent years.It is a system that can still communicate when noise is stronger than the signal, such as transmission and reception of very weak signals. Such noise is the most suitable for communication on a still strong line.
  • the local protocol converter 23 controls the protocol as a master system for power transmission, and also temporarily buffers data.
  • the power line carrier device 26 on the slave side is a device that transmits and receives data using the existing power line 13 similarly laid in a general office or home.
  • the transmission method of this device is a special transport method used on a power line without a filter as described above, and the modulation and demodulation method is an SS method.
  • the local protocol converter device 25 performs protocol control as a slave system for power line transfer, and also provides an interface to the data processing terminal 13 without the RS-232C protocol. Do.
  • FIG. 3 is a block diagram illustrating functions of the master system of the embodiment of the present invention
  • FIG. 4 is a block diagram illustrating functions of the slave system of the embodiment of the present invention.
  • the master system 12 is roughly divided into two wireless communication protocol control semi-systems 31 and a power transfer protocol control semi-system 32. It has a buffering function when the wireless communication speed and the power line communication speed are different. That is, the difference between the respective communication speeds is buffered as a reception buffer during the reception processing of the wireless communication data and the transmission processing to the power line carrier during reception, and the reception processing of the power line carrier and the wireless communication data are performed during transmission.
  • the transmission speed is adjusted by buffering the difference in each transmission speed as a transmission buffer during one transmission process.
  • the slave system 14 is roughly divided into two power line carrier protocol control semi-systems 33 and a non-procedural protocol control semi-system 34.
  • the master-side power transfer device 24 is combined with the wireless communication protocol converter device 22 and the mouth-to-culp port converter device 23 to combine the master-side power transmission device 24 with the master-side power transfer device 24.
  • the communication system is converted and the communication speed is buffered, and the transmission / reception power 5 ′ of the wireless communication can be achieved.
  • a slave system 14 composed of the communication system 25 and the data processing terminal 13 was converted and the communication speed was buffered between the slave system 14 and the data processing terminal 13 to transmit and receive data. Therefore, even in the surrounding environment where radio waves are significantly attenuated, such as the back of a large office and the basement of a building, data transmission by wireless communication has become possible by using the existing power line 11.
  • the plugs 17 and 18 can be plugged into the outlet 16 even if a new data processing terminal is installed or the location is changed. It can be easily installed simply by inserting it, so that it is easy to construct a total network of wireless data communication systems.
  • the master system 12 is configured as a system for transmitting and receiving wireless communication by combining a power line carrier device on the master side with a mouth-to-culp protocol converter device and a wireless communication protocol converter device.
  • the system 14 may be provided with a power line carrier on the slave side and a local protocol converter so as to transmit and receive data to and from the data processing terminal. Not done.
  • an existing power line can be used by providing a master system and a slave system using a power line carrier.
  • a wireless data communication system can be easily realized at low cost.
  • the data transmission system according to the present invention is suitable for realizing wireless communication and a local area network (LAN) system in a wireless dead zone where radio waves cannot reach.
  • LAN local area network

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

On réalise la transmission de données sans fil en utilisant une installation existante même dans une zone morte de transmission sans fil, on simplifie l'installation et on constitue un réseau complet de transmission de données sans fil. Un système maître de transmission sans fil comprend un convertisseur de protocole local, un convertisseur de protocole de transmission par fil, et un dispositif porteur d'une ligne de puissance. Un système asservi pour la transmission de données, pourvu de terminaux de traitement des données, comprend un dispositif porteur d'une ligne de puissance et un convertisseur de protocole local.
PCT/JP1991/001746 1990-12-20 1991-12-20 Systeme de transmission de donnees WO1992011717A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2/411908 1990-12-20
JP41190890A JPH04220832A (ja) 1990-12-20 1990-12-20 データ伝送システム

Publications (1)

Publication Number Publication Date
WO1992011717A1 true WO1992011717A1 (fr) 1992-07-09

Family

ID=18520824

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1991/001746 WO1992011717A1 (fr) 1990-12-20 1991-12-20 Systeme de transmission de donnees

Country Status (2)

Country Link
JP (1) JPH04220832A (fr)
WO (1) WO1992011717A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000059519A (ko) * 1999-03-04 2000-10-05 권상문 상호 다른 프로토콜을 이용하는 기종간의 통신시스템
US6144998A (en) * 1998-04-07 2000-11-07 Alcatel Usa Sourcing, L.P. Subscriber system for interactive interfacing with broadcast information

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219721A (ja) * 1986-03-19 1987-09-28 Mitsubishi Electric Corp ゲ−トウエイ
JPS63144727A (ja) * 1986-12-05 1988-06-16 積水化学工業株式会社 情報信号伝送用インタ−フエイスユニツト
JPH01503508A (ja) * 1987-03-23 1989-11-22 ディジタル　イクイプメント　コーポレーション ２つのローカルエリアネットワークシステム間でワイヤレスリンクを与える装置及び方法
JPH0260252A (ja) * 1988-08-25 1990-02-28 Toshiba Corp ネットワークシステム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219721A (ja) * 1986-03-19 1987-09-28 Mitsubishi Electric Corp ゲ−トウエイ
JPS63144727A (ja) * 1986-12-05 1988-06-16 積水化学工業株式会社 情報信号伝送用インタ−フエイスユニツト
JPH01503508A (ja) * 1987-03-23 1989-11-22 ディジタル　イクイプメント　コーポレーション ２つのローカルエリアネットワークシステム間でワイヤレスリンクを与える装置及び方法
JPH0260252A (ja) * 1988-08-25 1990-02-28 Toshiba Corp ネットワークシステム

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6144998A (en) * 1998-04-07 2000-11-07 Alcatel Usa Sourcing, L.P. Subscriber system for interactive interfacing with broadcast information
KR20000059519A (ko) * 1999-03-04 2000-10-05 권상문 상호 다른 프로토콜을 이용하는 기종간의 통신시스템

Also Published As

Publication number Publication date
JPH04220832A (ja) 1992-08-11

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