CA2216672A1 - Network engineering/systems engineering system for mobile satellite communication system - Google Patents

Network engineering/systems engineering system for mobile satellite communication system

Info

Publication number
CA2216672A1
CA2216672A1 CA2216672A CA2216672A CA2216672A1 CA 2216672 A1 CA2216672 A1 CA 2216672A1 CA 2216672 A CA2216672 A CA 2216672A CA 2216672 A CA2216672 A CA 2216672A CA 2216672 A1 CA2216672 A1 CA 2216672A1
Authority
CA
Canada
Prior art keywords
mobile satellite
satellite system
engineering
plans
network
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
CA2216672A
Other languages
French (fr)
Other versions
CA2216672C (en
Inventor
Michael E. Threadgill
Shih Chao Lin
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.)
ATC Technologies LLC
Original Assignee
Individual
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
Priority to US08/601,749 priority Critical patent/US5713075A/en
Application filed by Individual filed Critical Individual
Priority to CA002216672A priority patent/CA2216672C/en
Publication of CA2216672A1 publication Critical patent/CA2216672A1/en
Application granted granted Critical
Publication of CA2216672C publication Critical patent/CA2216672C/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
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • 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
    • H04B7/18502—Airborne stations
    • H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
    • H04B7/18508—Communications with or from aircraft, i.e. aeronautical mobile service with satellite system used as relay, i.e. aeronautical mobile satellite service

Abstract

A mobile satellite system includes a network engineering/systems engineering (NE/SE) system. The NE/SE performs the processes of comparing expected traffic loads with capability and availability of space and ground resources in the mobile satellite system, formulating tactical plans to maximize available resources of the satellite, and producing frequency plans for different geographical regions and defining circuit pools for different groups of users of the METs. The NE/SE also performs the processes of defining contingency plans for failure situations, such as failure in the satellite or a ground-based equipment outage, configuring the mobile satellite system including logical resources and physical components generating logical and physical configurations, the logical and physical configurations designed to expand the mobile satellite system capacity for increases in traffic demand, while also supporting new features and services of the mobile satellite system. The NE/SE
further configures communication paths to external organizations operatively connected to the mobile satellite system, and tracks logistics of network additions to the mobile satellite system via generation of work orders.
CA002216672A 1995-11-30 1997-11-25 Network engineering/systems engineering system for mobile satellite communication system Expired - Fee Related CA2216672C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08/601,749 US5713075A (en) 1995-11-30 1996-02-15 Network engineering/systems engineering system for mobile satellite communication system
CA002216672A CA2216672C (en) 1995-11-30 1997-11-25 Network engineering/systems engineering system for mobile satellite communication system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US780495P 1995-11-30 1995-11-30
US08/601,749 US5713075A (en) 1995-11-30 1996-02-15 Network engineering/systems engineering system for mobile satellite communication system
CA002216672A CA2216672C (en) 1995-11-30 1997-11-25 Network engineering/systems engineering system for mobile satellite communication system

Publications (2)

Publication Number Publication Date
CA2216672A1 true CA2216672A1 (en) 1997-12-25
CA2216672C CA2216672C (en) 2000-06-06

Family

ID=27170464

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002216672A Expired - Fee Related CA2216672C (en) 1995-11-30 1997-11-25 Network engineering/systems engineering system for mobile satellite communication system

Country Status (2)

Country Link
US (1) US5713075A (en)
CA (1) CA2216672C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1062741A1 (en) * 1998-01-23 2000-12-27 Innovative Communications Technologies, Inc. Capacity allocation system using semi-autonomous network elements to implement and control a transmission schedule
CN114759975A (en) * 2022-04-19 2022-07-15 国网新疆电力有限公司哈密供电公司 Electric energy data acquisition method and system based on Beidou satellite communication

Families Citing this family (112)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6421719B1 (en) * 1995-05-25 2002-07-16 Aprisma Management Technologies, Inc. Method and apparatus for reactive and deliberative configuration management
US5835061A (en) 1995-06-06 1998-11-10 Wayport, Inc. Method and apparatus for geographic-based communications service
US8606851B2 (en) 1995-06-06 2013-12-10 Wayport, Inc. Method and apparatus for geographic-based communications service
US6185409B1 (en) * 1995-11-30 2001-02-06 Amsc Subsidiary Corporation Network engineering/systems engineering system for mobile satellite communication system
US6058307A (en) * 1995-11-30 2000-05-02 Amsc Subsidiary Corporation Priority and preemption service system for satellite related communication using central controller
US6272341B1 (en) * 1995-11-30 2001-08-07 Motient Services Inc. Network engineering/systems engineering system for mobile satellite communication system
US5926745A (en) * 1995-11-30 1999-07-20 Amsc Subsidiary Corporation Network operations center for mobile earth terminal satellite communications system
US5870550A (en) * 1996-02-26 1999-02-09 Network Engineering Software Web server employing multi-homed, moldular framework
US6173332B1 (en) * 1996-03-06 2001-01-09 Paul L. Hickman Method and apparatus for computing over a wide area network
US7100069B1 (en) * 1996-02-16 2006-08-29 G&H Nevada-Tek Method and apparatus for controlling a computer over a wide area network
US8117298B1 (en) 1996-02-26 2012-02-14 Graphon Corporation Multi-homed web server
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
US5923648A (en) * 1996-09-30 1999-07-13 Amsc Subsidiary Corporation Methods of dynamically switching return channel transmissions of time-division multiple-access (TDMA) communication systems between signalling burst transmissions and message transmissions
US6073013A (en) * 1996-11-04 2000-06-06 Qualcomm Incorporated Method and apparatus for performing position-based call processing in a mobile telephone system
US5949770A (en) * 1996-12-02 1999-09-07 Lucent Technologies Inc. Method for assigning feature sets on virtual private telecommunications networks
US6014660A (en) * 1996-12-09 2000-01-11 Sun Microsystems, Inc. Method and apparatus for client-sensitive name resolution using DNS
US6002679A (en) * 1996-12-31 1999-12-14 Lucent Technologies Inc. Method for assigning feature sets on virtual private telecommunications networks
US5991746A (en) * 1997-02-05 1999-11-23 General Datacomm, Inc. Billing system utilizing a modified file transfer protocol for collecting non-file MIB tables for billing in an ATM network
US5912878A (en) * 1997-02-27 1999-06-15 Motorola, Inc. Method and end station with improved user reponse time in a mobile network
KR100548673B1 (en) * 1997-04-10 2006-02-02 콸콤 인코포레이티드 Determining the location of a subscriber unit in a mobile communication system
US5884142A (en) * 1997-04-15 1999-03-16 Globalstar L.P. Low earth orbit distributed gateway communication system
US6512968B1 (en) 1997-05-16 2003-01-28 Snap-On Technologies, Inc. Computerized automotive service system
US6405111B2 (en) 1997-05-16 2002-06-11 Snap-On Technologies, Inc. System and method for distributed computer automotive service equipment
US6285932B1 (en) * 1997-05-16 2001-09-04 Snap-On Technologies, Inc. Computerized automotive service system
US6021309A (en) * 1997-05-22 2000-02-01 Globalstar L.P. Channel frequency allocation for multiple-satellite communication network
JP2002501707A (en) 1997-05-30 2002-01-15 クゥアルコム・インコーポレイテッド Method and apparatus for error protection of wireless file transfer
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
US6708029B2 (en) 1997-06-02 2004-03-16 Hughes Electronics Corporation Broadband communication system for mobile users in a satellite-based network
US5956644A (en) * 1997-07-28 1999-09-21 Motorola, Inc. Multiple-user communication unit and method for operating in a satellite communication system
US6173175B1 (en) * 1997-10-21 2001-01-09 Nortel Networks Limited Process for provisioning resources in a radiotelephone network
US6728352B1 (en) * 1998-02-06 2004-04-27 Bear Creek Technologies, Inc. Switch interaction subsystems for facilitating network information management
US6148337A (en) * 1998-04-01 2000-11-14 Bridgeway Corporation Method and system for monitoring and manipulating the flow of private information on public networks
US6160797A (en) * 1998-04-03 2000-12-12 Starguide Digital Networks, Inc. Satellite receiver/router, system, and method of use
US8284774B2 (en) * 1998-04-03 2012-10-09 Megawave Audio Llc Ethernet digital storage (EDS) card and satellite transmission system
WO1999056475A1 (en) * 1998-04-29 1999-11-04 Telefonaktiebolaget Lm Ericsson (Publ) Resource allocation
US6333936B1 (en) 1998-04-29 2001-12-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for allocating processing resources
US6031334A (en) * 1998-06-17 2000-02-29 Primex Technologies, Inc. Method and apparatus for selectively distributing power in a thruster system
US6314290B1 (en) 1998-07-13 2001-11-06 Hughes Electronics Corporation Mobile satellite system and method for implementing a single-hop terminal-to-terminal call
WO2000008788A1 (en) * 1998-08-07 2000-02-17 Elzind Ihab H Cellular internet protocol modem network
US6233449B1 (en) * 1998-08-24 2001-05-15 Telefonaktiebolaget L M Ericsson (Publ) Operation and maintenance control point and method of managing a self-engineering telecommunications network
US6048366A (en) * 1998-10-26 2000-04-11 Exigent International, Inc. Satellite simulator
DE19854754A1 (en) * 1998-11-27 2000-06-08 Alcatel Sa Method, editor, computer, control module and storage means for editing configuration data for telecommunication systems
DE59914907D1 (en) * 1998-11-27 2009-01-02 Alcatel Lucent Method and device for validation of configuration data for telecommunication systems
US6516065B1 (en) 1998-11-30 2003-02-04 Hughes Electronics Corporation Method for implementing ciphered communication for single-hop terminal-to-terminal calls in a mobile satellite system
US6353738B1 (en) 1998-11-30 2002-03-05 Hughes Electronics Corporation Method for implementing a terminal-to-terminal call with an optimal use of radio resources in a mobile satellite system
DE19901329A1 (en) * 1999-01-15 2000-07-27 Alcatel Sa Determination method for validation rules in telecommunication system, involves using generator, server, controller and memory.
US20040160917A1 (en) * 1999-06-22 2004-08-19 Eliznd Ihab H. Multibeam antenna for a wireless network
US6253080B1 (en) 1999-07-08 2001-06-26 Globalstar L.P. Low earth orbit distributed gateway communication system
US6940838B1 (en) 1999-08-19 2005-09-06 Invertix Corporation Wireless telephone network optimization
US6263265B1 (en) 1999-10-01 2001-07-17 General Electric Company Web information vault
US7783507B2 (en) * 1999-08-23 2010-08-24 General Electric Company System and method for managing a fleet of remote assets
US6338152B1 (en) 1999-10-28 2002-01-08 General Electric Company Method and system for remotely managing communication of data used for predicting malfunctions in a plurality of machines
US6959235B1 (en) 1999-10-28 2005-10-25 General Electric Company Diagnosis and repair system and method
US6615367B1 (en) * 1999-10-28 2003-09-02 General Electric Company Method and apparatus for diagnosing difficult to diagnose faults in a complex system
US6795935B1 (en) 1999-10-28 2004-09-21 General Electric Company Diagnosis of faults in a complex system
US6625589B1 (en) 1999-10-28 2003-09-23 General Electric Company Method for adaptive threshold computation for time and frequency based anomalous feature identification in fault log data
US6651034B1 (en) * 1999-10-28 2003-11-18 General Electric Company Apparatus and method for performance and fault data analysis
EP1226697B1 (en) 1999-11-03 2010-09-22 Wayport, Inc. Distributed network communication system which enables multiple network providers to use a common distributed network infrastructure
CA2813651C (en) * 2000-03-03 2014-07-08 Qualcomm Incorporated Method and apparatus for participating in group communication services in an existing communication system
US8041817B2 (en) 2000-06-30 2011-10-18 At&T Intellectual Property I, Lp Anonymous location service for wireless networks
US6675017B1 (en) * 2000-06-30 2004-01-06 Bellsouth Intellectual Property Corporation Location blocking service for wireless networks
US7734724B2 (en) * 2000-09-06 2010-06-08 Xanboo Inc. Automated upload of content based on captured event
US20020083170A1 (en) * 2000-10-26 2002-06-27 Metilinx System-wide optimization integration model
US7428411B2 (en) 2000-12-19 2008-09-23 At&T Delaware Intellectual Property, Inc. Location-based security rules
US7085555B2 (en) 2000-12-19 2006-08-01 Bellsouth Intellectual Property Corporation Location blocking service from a web advertiser
US7116977B1 (en) 2000-12-19 2006-10-03 Bellsouth Intellectual Property Corporation System and method for using location information to execute an action
US7130630B1 (en) 2000-12-19 2006-10-31 Bellsouth Intellectual Property Corporation Location query service for wireless networks
US7245925B2 (en) 2000-12-19 2007-07-17 At&T Intellectual Property, Inc. System and method for using location information to execute an action
US7181225B1 (en) 2000-12-19 2007-02-20 Bellsouth Intellectual Property Corporation System and method for surveying wireless device users by location
US7110749B2 (en) 2000-12-19 2006-09-19 Bellsouth Intellectual Property Corporation Identity blocking service from a wireless service provider
US7224978B2 (en) 2000-12-19 2007-05-29 Bellsouth Intellectual Property Corporation Location blocking service from a wireless service provider
US6775540B2 (en) 2000-12-29 2004-08-10 Bellsouth Intellectual Property Corporation Method for automated retune of telecommunications data in a wireless network using ericsson equipment
US20020087734A1 (en) * 2000-12-29 2002-07-04 Marshall Donald Brent System and method for managing dependencies in a component-based system
US6987968B2 (en) * 2000-12-29 2006-01-17 Bellsouth Intellectual Property Corporation Method for reverse path mapping in a wireless network using Xtel and Lucent telecommunications equipment
US6904278B2 (en) * 2000-12-29 2005-06-07 Bellsouth Intellectual Property Corporation Method for mapping tear down data in a wireless network
US6983142B2 (en) 2000-12-29 2006-01-03 Bellsouth Intellectual Property Corporation Method for reverse path mapping in a wireless network using Xtel and ericsson telecommunications equipment
US6957064B2 (en) * 2000-12-29 2005-10-18 Bellsouth Intellectual Property Corporation Method for automated retune of telecommunications data in a wireless network using lucent equipment
US6895244B2 (en) * 2000-12-29 2005-05-17 Bellsouth Intellectual Property Corporation Method for automated update of telecommunications data in a wireless network
US6895243B2 (en) * 2000-12-29 2005-05-17 Bellsouth Intellectual Property Corporation Method for reverse path mapping in a wireless network using Comarco and Hughes telecommunications equipment
US7046646B2 (en) * 2001-01-29 2006-05-16 Ipr Licensing, Inc. Method and apparatus for simple PPP handoff for mobile users
US7266429B2 (en) * 2001-04-30 2007-09-04 General Electric Company Digitization of field engineering work processes at a gas turbine power plant through the use of portable computing devices operable in an on-site wireless local area network
US7082296B2 (en) 2002-04-19 2006-07-25 Northrup Grumann Corporation Method for sustaining radio frequency (RF) based communications connectivity during network outages
US20030204371A1 (en) * 2002-04-30 2003-10-30 Chevron U.S.A. Inc. Temporary wireless sensor network system
US20040083126A1 (en) * 2002-10-23 2004-04-29 Svenson Dale V. Aviation traffic and revenue forecasting system
KR20040050546A (en) * 2002-12-10 2004-06-16 현대자동차주식회사 Internet connection system of telematics on vehicle and method thereof
US7406058B2 (en) * 2003-08-13 2008-07-29 Qualcomm, Incorporated Methods and apparatus of transmitting user data using traffic channels
US20050289623A1 (en) * 2004-05-21 2005-12-29 Mowaffak Midani Bulk tuning of frequency-modulated video signals
US7583935B2 (en) * 2005-07-08 2009-09-01 Telcom Ventures, Llc Method and system for mitigating co-channel interference
US7950011B2 (en) * 2005-10-10 2011-05-24 Oracle International Corporation Leveraging advanced queues to implement event based job scheduling
RU2419989C2 (en) * 2006-01-03 2011-05-27 ТЕЛКОМ ВЕНЧЕРЗ ЭлЭлСи Use of synchronisation and time distribution in combined satellite-land line network with multiplexing with orthogonal frequency division
US8300798B1 (en) 2006-04-03 2012-10-30 Wai Wu Intelligent communication routing system and method
US10142013B2 (en) * 2006-12-20 2018-11-27 The Boeing Company Method of optimizing an interplanetary communications network
WO2008118593A1 (en) * 2007-03-27 2008-10-02 Telcom Ventures, Llc Method and system for improving the spectral efficiency of a data communication link
US20090043621A1 (en) * 2007-08-09 2009-02-12 David Kershaw System and Method of Team Performance Management Software
FR2920055B1 (en) * 2007-08-14 2013-05-03 Airbus France SYSTEM AND METHOD FOR TRANSMITTING DATA BETWEEN AT LEAST ONE DISPLAY SCREEN AND A CLIENT SYSTEM
US8761751B2 (en) 2008-03-14 2014-06-24 William J. Johnson System and method for targeting data processing system(s) with data
US8639267B2 (en) 2008-03-14 2014-01-28 William J. Johnson System and method for location based exchanges of data facilitating distributed locational applications
US8566839B2 (en) * 2008-03-14 2013-10-22 William J. Johnson System and method for automated content presentation objects
US9078095B2 (en) 2008-03-14 2015-07-07 William J. Johnson System and method for location based inventory management
US8634796B2 (en) 2008-03-14 2014-01-21 William J. Johnson System and method for location based exchanges of data facilitating distributed location applications
US8600341B2 (en) 2008-03-14 2013-12-03 William J. Johnson System and method for location based exchanges of data facilitating distributed locational applications
FR2931329B1 (en) * 2008-05-16 2010-06-18 Airbus France METHOD OF TRANSMITTING DATA BETWEEN AT LEAST ONE DISPLAY SCREEN OF A STEERING STATION AND AT LEAST ONE REMOTE CLIENT ASSEMBLY
US8893035B2 (en) * 2008-09-17 2014-11-18 Accenture Global Services Limited Method, system and graphical user interface for configuring a simulator to simulate a plurality of devices
US8825462B2 (en) 2008-09-17 2014-09-02 Accenture Global Services Limited Method and system for simulating a plurality of devices
US20120057481A1 (en) * 2010-09-07 2012-03-08 Electronics And Telecommunications Research Institute System and method for measuring round trip time based on wireless local area network
WO2013133870A2 (en) 2012-03-07 2013-09-12 Snap Trends, Inc. Methods and systems of aggregating information of social networks based on geographical locations via a network
US9477991B2 (en) 2013-08-27 2016-10-25 Snap Trends, Inc. Methods and systems of aggregating information of geographic context regions of social networks based on geographical locations via a network
US9894489B2 (en) 2013-09-30 2018-02-13 William J. Johnson System and method for situational proximity observation alerting privileged recipients
CA2847314A1 (en) * 2014-03-21 2015-09-21 Telesat Canada System and method for satellite network capacity boost by frequency cross-strapping
US10426424B2 (en) 2017-11-21 2019-10-01 General Electric Company System and method for generating and performing imaging protocol simulations
CN113485292B (en) * 2021-06-29 2022-07-01 上海利正卫星应用技术有限公司 Method and system for improving multi-satellite parallel test capability

Family Cites Families (2)

* 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
US5555444A (en) * 1994-03-11 1996-09-10 Motorola, Inc. Method and apparatus for predictive operation of a communication system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1062741A1 (en) * 1998-01-23 2000-12-27 Innovative Communications Technologies, Inc. Capacity allocation system using semi-autonomous network elements to implement and control a transmission schedule
EP1062741A4 (en) * 1998-01-23 2001-10-04 Innovative Comm Technologies I Capacity allocation system using semi-autonomous network elements to implement and control a transmission schedule
EP1062741B1 (en) * 1998-01-23 2004-10-06 Innovative Communications Technologies, Inc. Capacity allocation system using semi-autonomous network elements to implement and control a transmission schedule
CN114759975A (en) * 2022-04-19 2022-07-15 国网新疆电力有限公司哈密供电公司 Electric energy data acquisition method and system based on Beidou satellite communication
CN114759975B (en) * 2022-04-19 2023-09-01 国网新疆电力有限公司哈密供电公司 Electric energy data acquisition method and system based on Beidou satellite communication

Also Published As

Publication number Publication date
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CA2216672C (en) 2000-06-06

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