CA2165875A1 - Intersatellite communications systems - Google Patents

Intersatellite communications systems

Info

Publication number
CA2165875A1
CA2165875A1 CA002165875A CA2165875A CA2165875A1 CA 2165875 A1 CA2165875 A1 CA 2165875A1 CA 002165875 A CA002165875 A CA 002165875A CA 2165875 A CA2165875 A CA 2165875A CA 2165875 A1 CA2165875 A1 CA 2165875A1
Authority
CA
Canada
Prior art keywords
satellite
satellites
channel
incoming
beams
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
Application number
CA002165875A
Other languages
French (fr)
Other versions
CA2165875C (en
Inventor
Gary Beauchamp
Val O'donovan
Robert Peach
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.)
Com Dev Ltd
Original Assignee
Com Dev Ltd
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 Com Dev Ltd filed Critical Com Dev Ltd
Priority to CA002165875A priority Critical patent/CA2165875C/en
Priority to US08/715,065 priority patent/US5825325A/en
Priority to EP19960119806 priority patent/EP0780998B1/en
Priority to DE69627284T priority patent/DE69627284T2/en
Priority to NO965313A priority patent/NO965313L/en
Publication of CA2165875A1 publication Critical patent/CA2165875A1/en
Application granted granted Critical
Publication of CA2165875C publication Critical patent/CA2165875C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service

Landscapes

  • 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

A multibeam communications satellite has direct links with at least one other satellite.
The satellite's repeater operates in the bent-pipe mode and can provide service to users independent of signal content, format and protocol. Each incoming electromagnetic (radio) beam received by the satellite contains at least one channel of information, and each channel is divisible into subchannels. Naturally, each subchannel is of a bandwidth which is less than the bandwidth of the channel from which the subchannel was derived.
The other satellite has outgoing beams that complement the first satellites incoming beams. Generally, both satellites have processors on board designed to interbeam-switch at the subchannel level. (However, a description is given also of an instance where one or the other satellites may not have subchannelizing capability and limited use may be made of the invention). The satellites are linked by an intersatellite link carrying information on a channel consisting of subchannels constituted from several incoming channels. Therefore, an outgoing beam from the second satellite can contain a channel having information combined from several incoming channels to the first satellite and the channel information on any incoming electromagnetic (radio) beam can be delivered at the subchannel level to several output beams from the second satellite. The system can operate in a broadcast mode whereby information at the subchannel level can be distributed simultaneously (i.e. in parallel) to several outgoing electromagnetic (radio) beams. The intersatellite link is treated as any other beam (incoming or outgoing, as the case may be), although its operating wavelength may be different from the operating wavelengths of the beams having terrestrial origin or destination. For example, the intersatellite link could be at microwave, optical or some other suitable frequency. The basic concept may be extended to a system supporting multiple intersatellite links, e.g.
links in both directions between the two satellites or, in some circumstances, among a constellation of more than two satellites.
CA002165875A 1995-12-21 1995-12-21 Intersatellite communications systems Expired - Fee Related CA2165875C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA002165875A CA2165875C (en) 1995-12-21 1995-12-21 Intersatellite communications systems
US08/715,065 US5825325A (en) 1995-12-21 1996-09-17 Intersatellite communications systems
EP19960119806 EP0780998B1 (en) 1995-12-21 1996-12-10 Intersatellite communication system with switching at subchannel level using bent-pipe architecture
DE69627284T DE69627284T2 (en) 1995-12-21 1996-12-10 Intersatellite communication arrangement with subchannel switching and bent pipe architecture
NO965313A NO965313L (en) 1995-12-21 1996-12-12 Inter Satellite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002165875A CA2165875C (en) 1995-12-21 1995-12-21 Intersatellite communications systems

Publications (2)

Publication Number Publication Date
CA2165875A1 true CA2165875A1 (en) 1997-06-22
CA2165875C CA2165875C (en) 2001-03-13

Family

ID=4157214

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002165875A Expired - Fee Related CA2165875C (en) 1995-12-21 1995-12-21 Intersatellite communications systems

Country Status (2)

Country Link
US (1) US5825325A (en)
CA (1) CA2165875C (en)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6708029B2 (en) 1997-06-02 2004-03-16 Hughes Electronics Corporation Broadband communication system for mobile users in a satellite-based network
US6125261A (en) * 1997-06-02 2000-09-26 Hughes Electronics Corporation Method and system for communicating high rate data in a satellite-based communications network
US6032041A (en) * 1997-06-02 2000-02-29 Hughes Electronics Corporation Method and system for providing wideband communications to mobile users in a satellite-based network
US6175719B1 (en) * 1997-06-25 2001-01-16 Hughes Electronics Corporation Multi-spot-beam satellite system with broadcast and surge capacity capability
US6282179B1 (en) * 1997-10-17 2001-08-28 At&T Corp. Method and system for reducing multipath fading in bent-pipe satellite communications systems
AU2456899A (en) * 1998-02-18 1999-09-06 Viasat, Inc. Method for improving inter-beam capacity switching for multiple spot beam satellite systems
FR2777721B1 (en) * 1998-04-16 2000-12-15 Alsthom Cge Alkatel COMMUNICATION METHOD BETWEEN LAND STATIONS USING SATELLITE CONSTELLATION
US7027769B1 (en) 2000-03-31 2006-04-11 The Directv Group, Inc. GEO stationary communications system with minimal delay
EP1148661A3 (en) * 2000-04-21 2003-10-29 Lockheed Martin Corporation Geostationary satellite system with satellite clusters having intra-cluster local area networks and inter-cluster wide area network
US7058140B2 (en) * 2000-06-16 2006-06-06 Smart Kevin J Sliding-window multi-carrier frequency division multiplexing system
US6829479B1 (en) * 2000-07-14 2004-12-07 The Directv Group. Inc. Fixed wireless back haul for mobile communications using stratospheric platforms
US6859652B2 (en) 2000-08-02 2005-02-22 Mobile Satellite Ventures, Lp Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis
US6895217B1 (en) 2000-08-21 2005-05-17 The Directv Group, Inc. Stratospheric-based communication system for mobile users having adaptive interference rejection
US6868269B1 (en) 2000-08-28 2005-03-15 The Directv Group, Inc. Integrating coverage areas of multiple transponder platforms
US7792488B2 (en) 2000-12-04 2010-09-07 Atc Technologies, Llc Systems and methods for transmitting electromagnetic energy over a wireless channel having sufficiently weak measured signal strength
US7019882B1 (en) 2002-03-21 2006-03-28 Lockheed Martin Corporation Generation of M-ary digital signaling constellations directly at lightwave frequencies
US7177592B2 (en) * 2003-05-30 2007-02-13 The Boeing Company Wireless communication system with split spot beam payload
KR100579127B1 (en) * 2003-11-19 2006-05-12 한국전자통신연구원 Satellite transponder switch control apparatus and method for multibeam communication
US7460830B2 (en) * 2003-12-29 2008-12-02 Peersat, Llc. Inter-satellite crosslink communications system, apparatus, method and computer program product
US7738837B2 (en) * 2005-02-22 2010-06-15 Atc Technologies, Llc Satellites using inter-satellite links to create indirect feeder link paths
US20090295628A1 (en) * 2006-09-26 2009-12-03 Viasat, Inc. Satellite System Optimization
US8538323B2 (en) * 2006-09-26 2013-09-17 Viasat, Inc. Satellite architecture
EP2645596B2 (en) 2006-09-26 2020-02-12 ViaSat, Inc. Improved spot beam satellite systems
CN101573892A (en) * 2006-10-03 2009-11-04 维尔塞特公司 Large packet concatenation in satellite communication system
EP2092663A2 (en) * 2006-10-03 2009-08-26 ViaSat, Inc. Upfront delayed concatenation in satellite communication system
CN101573889B (en) * 2006-10-03 2014-05-14 维尔塞特公司 Web/bulk transfer preallocation of upstream resources in satellite communication system
WO2008060759A2 (en) * 2006-10-03 2008-05-22 Viasat, Inc. Map-trigger dump of packets in satellite communication system
US7869759B2 (en) * 2006-12-14 2011-01-11 Viasat, Inc. Satellite communication system and method with asymmetric feeder and service frequency bands
US20100059294A1 (en) * 2008-09-08 2010-03-11 Apple Inc. Bandwidth enhancement for a touch sensor panel
FR2952451B1 (en) * 2009-11-10 2011-12-23 Thales Sa DYNAMIC MANAGEMENT OF THE FREQUENCY ROUTING CAPABILITY OF A TRANSPARENT DIGITAL PROCESSOR
FR2954634B1 (en) * 2009-12-18 2012-02-24 Thales Sa SYSTEM FOR TRANSMITTING AND RECEIVING MULTI-SPOTS OF A SATELLITE AND SATELLITE COMPRISING SUCH A SYSTEM
US9749037B2 (en) * 2013-04-18 2017-08-29 Mitsubishi Electric Corporation Demultiplexing apparatus, multiplexing apparatus, and relay apparatus
US9991944B2 (en) * 2015-01-15 2018-06-05 Hughes Network Systems, Llc High altitude platform with multibeam coverage for aero-based terminals
AU2016302616B2 (en) * 2015-07-31 2020-06-25 Viasat, Inc. Flexible capacity satellite constellation
EP3361651A1 (en) * 2017-02-10 2018-08-15 Airbus Defence and Space Limited Ultra-low latency telecommunications system
CN112968725B (en) * 2019-12-13 2022-05-13 清华大学 Satellite link switching method and device

Family Cites Families (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1943735A1 (en) * 1969-08-28 1971-03-11 Licentia Gmbh Directional radio system
US4029902A (en) * 1975-10-22 1977-06-14 Hughes Aircraft Company Contiguous channel multiplexer
CA1084183A (en) * 1976-09-21 1980-08-19 William R. Holme Branched path, path routing arrangement and systems
US4144495A (en) * 1977-02-23 1979-03-13 Communications Satellite Corporation Satellite switching system
US4228401A (en) * 1977-12-22 1980-10-14 Communications Satellite Corporation Communication satellite transponder interconnection utilizing variable bandpass filter
US4381562A (en) * 1980-05-01 1983-04-26 Bell Telephone Laboratories, Incorporated Broadcast type satellite communication systems
IT1130545B (en) * 1980-12-03 1986-06-18 Cselt Centro Studi Lab Telecom PROCEDURE AND SYSTEM FOR ACCESS TO A SATELLITE FOR TELECOMMUNICATIONS WITH COMMUNICATION ON BOARD
US4425639A (en) * 1981-01-12 1984-01-10 Bell Telephone Laboratories, Incorporated Satellite communications system with frequency channelized beams
US4456988A (en) * 1981-01-29 1984-06-26 Kokusai Denshin Denwa Kabushiki Kaisha Satellite repeater
GB8300747D0 (en) * 1983-01-12 1983-02-16 British Aerospace Co-operative satellites
US4491947A (en) * 1983-05-31 1985-01-01 At&T Bell Laboratories Technique for dynamic scheduling of integrated circuit- and packet-switching in a multi-beam SS/TDMA system
US5303286A (en) * 1991-03-29 1994-04-12 Space Systems/Loral, Inc. Wireless telephone/satellite roaming system
JPS61148926A (en) * 1984-12-24 1986-07-07 Kokusai Denshin Denwa Co Ltd <Kdd> Communication satellite repeater
US4813036A (en) * 1985-11-27 1989-03-14 National Exchange, Inc. Fully interconnected spot beam satellite communication system
US4858229A (en) * 1986-08-14 1989-08-15 Hughes Aircraft Company Filter interconnection matrix
US4858225A (en) * 1987-11-05 1989-08-15 International Telecommunications Satellite Variable bandwidth variable center-frequency multibeam satellite-switched router
US5408515A (en) * 1988-04-29 1995-04-18 Mobile Telecommunication Technologies Ground-to-air telephone calling system and related method for directing a call to a particular passenger
US4868886A (en) * 1988-06-14 1989-09-19 Communication Satellite Corporation Combined global/spot beam configuration for satellite communications
GB8819501D0 (en) * 1988-08-17 1988-09-21 British Aerospace Spacecraft payload
EP0500564B1 (en) * 1989-11-03 1999-07-21 Motorola, Inc. Global communication system, receiver and method for operating the same
US5129095A (en) * 1989-11-03 1992-07-07 Motorola, Inc. Global communication system receiver and method for operating the same
US5274840A (en) * 1989-11-06 1993-12-28 Motorola, Inc. Satellite communication system
US5068813A (en) * 1989-11-07 1991-11-26 Mts Systems Corporation Phased digital filtering in multichannel environment
US5239670A (en) * 1989-11-30 1993-08-24 Motorola, Inc. Satellite based global paging system
US5327572A (en) * 1990-03-06 1994-07-05 Motorola, Inc. Networked satellite and terrestrial cellular radiotelephone systems
US5233609A (en) * 1990-08-27 1993-08-03 Gte Government Systems Multichannel multiplexer with frequency discrimination characteristics
CA2061090A1 (en) * 1991-03-11 1992-09-12 Richard A. Miska Personal mobile communication system with call bridging
BR9102145A (en) * 1991-05-20 1993-01-05 Elebra Telecon Ltda CELLULAR PHONE SYSTEM WITH ENLARGED CELL
US5274627A (en) * 1991-07-10 1993-12-28 International Telecommunications Satellite Organization Non-regenerative multibeam satellite communications system with FDMA access and SSTDM connectivity
US5355512A (en) * 1992-03-12 1994-10-11 General Electric Co. Uplink null intrusion rejection for satellite communications systems
US5249181A (en) * 1992-03-25 1993-09-28 Motorola, Inc. Call processing using logical channel assignments
US5343512A (en) * 1992-03-27 1994-08-30 Motorola, Inc. Call setup method for use with a network having mobile end users
US5361399A (en) * 1992-06-02 1994-11-01 Pagemart, Inc. Adaptive communication system for transmitting between base stations and portable transceivers via different data rate communication links
FR2694855B1 (en) * 1992-08-14 1994-09-30 Alcatel Espace Transparent switching device, in particular for the space domain, payload architectures using such a device, and methods of implementing the device and the architectures.
US5396643A (en) * 1992-08-24 1995-03-07 Motorola, Inc. Geographic-area selective low-earth satellite-based paging broadcast system and method
US5394560A (en) * 1992-09-30 1995-02-28 Motorola, Inc. Nationwide satellite message delivery system
US5483664A (en) * 1993-07-26 1996-01-09 Motorola, Inc. Cellular communications with scheduled handoffs
US5499237A (en) * 1995-03-23 1996-03-12 Motorola, Inc. Waste canceling packet routing system and method

Also Published As

Publication number Publication date
US5825325A (en) 1998-10-20
CA2165875C (en) 2001-03-13

Similar Documents

Publication Publication Date Title
CA2165875A1 (en) Intersatellite communications systems
AU597126B2 (en) Satellite communications system for mobile users
EP1192740B1 (en) Feeder link spatial multiplexing in a satellite communication system
EP0887951B1 (en) Method and system for communicating high rate data in a satellite-based communications network
US6704543B1 (en) Multi-beam satellite communications system
US6628919B1 (en) Low-cost multi-mission broadband communications payload
US7925208B2 (en) Multi-spot-beam satellite system with broadcast and surge capacity capability
US6912075B1 (en) Ring architecture for an optical satellite communication network with passive optical routing
CA2157209C (en) Repeaters for multibeam satellites
US6009306A (en) Hub communications satellite and system
US7409160B2 (en) Global gateway architecture for interconnecting regional satellites into a communication network
EP0780998B1 (en) Intersatellite communication system with switching at subchannel level using bent-pipe architecture
EP1168672A2 (en) Multiple satellite beam laydown with switchable bands for hopped satellite downlink
GB2319700A (en) Satellite communication system using satellites at different altitudes
US6301465B1 (en) Adaptive transceiver architecture for real time allocation of communications resources in a satellite based telecommunication system
US20030134594A1 (en) Downlink switching mechanism for a satellite
Mahle et al. Satellite Scenarios and Technology for the 1990's
EP1168673B1 (en) Beam laydown for hopped satellite downlink with adaptable duty cycle
Gayrard et al. Free-space optical communication technologies will enable next generation of ultra high throughput satellite
EP0760561B9 (en) Repeaters for multibeam satellites with channels divided in subchannels and interbeam switching
EP1353454A2 (en) Multi-beam satellite communications system
JPS58146148A (en) Multi-beam satellite communication system having plural beam widths
JORASCH et al. Advanced satellite system architecture for VSATs with ISDN compatibility
RU2013869C1 (en) Board repeater
Miracapillo et al. The L-band Land Mobile Payload (LLM) aboard ARTEMIS

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed