WO1999030431A1 - Modem multibande pour systeme multibande de communications bidirectionnelles - Google Patents

Modem multibande pour systeme multibande de communications bidirectionnelles Download PDF

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Publication number
WO1999030431A1
WO1999030431A1 PCT/US1998/026456 US9826456W WO9930431A1 WO 1999030431 A1 WO1999030431 A1 WO 1999030431A1 US 9826456 W US9826456 W US 9826456W WO 9930431 A1 WO9930431 A1 WO 9930431A1
Authority
WO
WIPO (PCT)
Prior art keywords
satellite
communication
data base
communication system
request
Prior art date
Application number
PCT/US1998/026456
Other languages
English (en)
Inventor
Bruce E. Powers
Frank P. Nibley
Original Assignee
Nunet Technologies, Inc.
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 Nunet Technologies, Inc. filed Critical Nunet Technologies, Inc.
Priority to AU18212/99A priority Critical patent/AU1821299A/en
Publication of WO1999030431A1 publication Critical patent/WO1999030431A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
    • H04B7/1858—Arrangements for data transmission on the physical system, i.e. for data bit transmission between network components

Definitions

  • This invention relates to an interactive two-way network, and more particularly, to communication within an interactive two-way multi-band satellite broadcast data service network.
  • Communication within an interactive satellite broadcast data network is a system in which individual subscriber units receive communication from a central rf repeater station via an rf transmission from an individual satellite.
  • the rf repeater station processes and relays data received from a variety of data base services, such as, but not limited to, Internet, Extranet, and Intranet service providers, that has been transmitted through at telephone line.
  • data base services such as, but not limited to, Internet, Extranet, and Intranet service providers
  • a user may purchase a subscriber unit and position it in the basement or other physical location which prevents the subscriber unit from receiving rf transmissions from a satellite.
  • the subscriber units In an attempt to alleviate transmission problems, the subscriber units must be positioned in a southern direction with a clear sight line to a satellite. In order to further limit ineffective communication the subscriber unit transmits to the data base service provider through a telephone line and local point of presence. However even if the user has placed the subscriber unit in the proper transmit physical location the subscriber unit still may be prevented from receiving signals from a satellite due to the lack of local point of presence stations in the vicinity.
  • the above object has been achieved using a modem which is used to enable communication between a subscriber unit and a rf repeater station.
  • the subscriber unit is connected via a modem and rf transmissions from satellites to a rf repeater station. Communications are sent from the subscriber unit with connected modem to the rf repeater station via a satellite rf transmission.
  • the rf repeater station processes the communication to and responses from a variety of data base services.
  • the rf repeater station transmits the responses to the modem via a rf transmission from a satellite.
  • the modem then transmits the communication to the connected subscriber unit. In so doing, two-way multi-band communication in an interactive broadcast network are achieved.
  • FIG. 1 shows a Prior Art interactive broadcast system wherein a rf repeater station employs a transmit only approach to a subscriber unit.
  • FIG. 2 shows a Prior Art interactive broadcast system wherein a rf repeater station can receive and transmit only within the same frequency band to a VSAT terminal.
  • FIG. 3 shows a communication system in an multi-band interactive broadcast network wherein a modem can receive and transmit communication between an rf repeater and a subscriber unit using one or more frequency band.
  • a subscriber unit 10 communicates to a local point of presence 12 over a telephone line 14 of, for example twisted pair wire.
  • the local point of presence 12 then communicates to a variety of data base services 16 over a telephone line 18 of, for example fiberoptic wire, through a public switched network 24.
  • the data base service 16 transmits the data requested by the subscriber unit 10 to a rf repeater station 20.
  • Rf repeater station 20 transmits the response to the subscriber unit 10 via a rf transmission 32 from an individual satellite 22 of, for example 11.500 - 14.500 GHz.
  • subscriber unit 10 is unable to receive transmissions via a satellite 22 from the variety of data base services 16.
  • subscriber unit 10 may be placed in an area which is not equipped with or is not covered by a local point of presence 12.
  • the VSAT terminal 34 communicates to a rf repeater station 50 via a rf transmission 32 from an individual satellite 22 of, for example 11.500 - 14.500 GHz.
  • the rf repeater station 20 process the communication to and responses from a variety of data base services through a publicly switched network 24.
  • the rf repeater station 50 transmits the responses to the VSAT terminal 34 via a rf transmission 32 from an individual satellite 22 of, for example 11.500 - 14.500 GHz.
  • a communication system including a modem 26 for enabling communication between one or more satellites 22 and a subscriber unit 10 is shown.
  • the subscriber unit 10 configured with the modem 26 sends a communication to a rf repeater receive station 52 via a rf transmission 42 to a satellite 36 of, for example 880 -886 MHz.
  • the satellite 36 relays the communication to the rf repeater receive station 52 with a rf transmission 40 of, for example 11.500 - 12.500 GHz.
  • the rf repeater receive station 52 communicates to a variety of data base service 16 over a hardwire telecommunications cable 38 of, for example fiberoptic cable.
  • the data base service 16 transmits the data requested by the Subscriber unit 10 through a rf repeater transmit station 28 to the Subscriber unit 10 via a satellite 30 rf transmission 44 of, for example 11.500 - 14.500 GHz.
  • a satellite 36 of, for example 14.100 - 14.600 GHz.
  • 14.100-14.600 GHz a frequency of 14.100-14.600 GHz is used in the embodiments, the invention is also suited to the use of other frequencies such as, for example 5.6 GHz or 22 GHz.
  • the satellite 36 relays the communication to the rf repeater receive station 52 with a rf transmission 40 of, for example 11.500 - 12.500 GHz.
  • the rf repeater receive station 34 communicates to a variety data base services 16 over a hardwire telecommunications cable 38 of, for example fiberoptic cable.
  • the data base service 16 transmits the data requested by the Subscriber unit 10 through an rf repeater transmit station 28 to the Subscriber unit 10 via a satellite rf transmission 44 of, for example 22.00 - 23.00 GHz.
  • a satellite rf transmission 44 of, for example 22.00 - 23.00 GHz.
  • modem 26 is connected to the satellite 36 for the length of each rf transmission to the rf repeater receive station 52 from the subscriber unit 10.
  • Initiation of auto dial-up by the subscriber unit 10 includes a serial number handshake that is transmitted to the rf repeater receive station 52 and forwarded to the rf repeater station 28.
  • the rf repeater transmit stations's 28 transmission back the subscriber unit's 10 modem 26 via satellite 30 includes the serial number, the serial number is compared to the serial number originally sent by subscriber unit 10 to protect the integrity of the communication and completing the handshake.
  • the invention provides several substantial benefits over the standard two-way interactive data broadcast network.
  • Example uses of this invention are providing individual home subscribers the benefits of remote or rural doctors offices with video-conferencing, image and real time diagnosis consultation, pay-per view movie downloading, removal of local point of presence requirement in each metropolitan or rural region, and telephony for remote or emerging economies that do not have telephony infrastructure. In so doing, the multi-band two-way communication system is achieved.
  • the foregoing descriptions of specific embodiments of the invention have been generated for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular as contemplated.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)

Abstract

L'invention concerne un système et un procédé de communication entre un abonné et un répéteur radio dans un réseau interactif de communications bidirectionnelles. Selon un mode de réalisation, on a recours à un modem pour l'émission et la réception des communications entre un poste d'abonné et un répéteur radio. Le raccordement du poste d'abonné passe par un modem (26) et par des liaisons radio entre des satellites et un répéteur radio (52). Au départ du poste d'abonné (10) auquel est connecté le modem (26), les communications à destination du répéteur radio (52) transitent par une émission radio (40) du satellite. Le répéteur radio (52, 58) traite la communication à destination de divers services de base de données (16), ainsi que les réponses en retour. Pour les réponses envoyées au modem (26), le répéteur radio (28) utilise une émission radio (44) au départ d'un satellite. Le modem (26) émet ensuite la communication au poste d'abonné connecté (10).
PCT/US1998/026456 1997-12-12 1998-12-11 Modem multibande pour systeme multibande de communications bidirectionnelles WO1999030431A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18212/99A AU1821299A (en) 1997-12-12 1998-12-11 Multiband modem for use in operating a multiband two way communications system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US6968097P 1997-12-12 1997-12-12
US60/069,680 1997-12-12
US4787598A 1998-03-25 1998-03-25
US09/047,875 1998-03-25

Publications (1)

Publication Number Publication Date
WO1999030431A1 true WO1999030431A1 (fr) 1999-06-17

Family

ID=26725543

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/026456 WO1999030431A1 (fr) 1997-12-12 1998-12-11 Modem multibande pour systeme multibande de communications bidirectionnelles

Country Status (2)

Country Link
AU (1) AU1821299A (fr)
WO (1) WO1999030431A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5590395A (en) * 1993-11-10 1996-12-31 Motorola, Inc. Satellite cellular network resource management method and apparatus
US5634190A (en) * 1995-06-06 1997-05-27 Globalstar L.P. Low earth orbit communication satellite gateway-to-gateway relay system
US5708963A (en) * 1995-02-24 1998-01-13 Scientific-Atlanta, Inc. Method and apparatus for using satellites for reverse path communication in direct-to-home subscription information systems
US5737685A (en) * 1992-02-25 1998-04-07 Motorola, Inc. Co-located subscriber unit to subscriber unit communication within a satellite communication system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5737685A (en) * 1992-02-25 1998-04-07 Motorola, Inc. Co-located subscriber unit to subscriber unit communication within a satellite communication system
US5590395A (en) * 1993-11-10 1996-12-31 Motorola, Inc. Satellite cellular network resource management method and apparatus
US5708963A (en) * 1995-02-24 1998-01-13 Scientific-Atlanta, Inc. Method and apparatus for using satellites for reverse path communication in direct-to-home subscription information systems
US5634190A (en) * 1995-06-06 1997-05-27 Globalstar L.P. Low earth orbit communication satellite gateway-to-gateway relay system

Also Published As

Publication number Publication date
AU1821299A (en) 1999-06-28

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