CA2251320A1 - Non-uniform multi-beam satellite communications system and method - Google Patents

Non-uniform multi-beam satellite communications system and method

Info

Publication number
CA2251320A1
CA2251320A1 CA002251320A CA2251320A CA2251320A1 CA 2251320 A1 CA2251320 A1 CA 2251320A1 CA 002251320 A CA002251320 A CA 002251320A CA 2251320 A CA2251320 A CA 2251320A CA 2251320 A1 CA2251320 A1 CA 2251320A1
Authority
CA
Canada
Prior art keywords
service
local
important
communications system
satellite communications
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
CA002251320A
Other languages
French (fr)
Other versions
CA2251320C (en
Inventor
John L. Norin
Sudhakar Rao
Paul Regulinski
Romulo Pontual
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.)
DirecTV Group Inc
TFCF America Inc
Original Assignee
Hughes Electronics Corporation
John L. Norin
Sudhakar Rao
Paul Regulinski
Romulo Pontual
News America Incorporated
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26741747&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2251320(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hughes Electronics Corporation, John L. Norin, Sudhakar Rao, Paul Regulinski, Romulo Pontual, News America Incorporated filed Critical Hughes Electronics Corporation
Publication of CA2251320A1 publication Critical patent/CA2251320A1/en
Application granted granted Critical
Publication of CA2251320C publication Critical patent/CA2251320C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B7/204—Multiple access
    • H04B7/2041—Spot beam multiple access
    • 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
    • H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service

Abstract

A satellite broadcast system and method, particularly useful for television signals, allows for local as well as nationwide broadcast service by allocating greater satellite resources to the more important local service areas. This is accomplished by broadcasting a non-uniform pattern of local service beams and designing the system to establish different service area priorities through factors such as the individual beam powers, sizes, roll-off characteristics and peak-to-edge power differentials. Frequency reuse is en-hanced by permitting a certain degree of cross-beam interfer-ence, with lower levels of interference established for the more important service areas.
CA002251320A 1997-10-17 1998-10-19 Non-uniform multi-beam satellite communications system and method Expired - Lifetime CA2251320C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US6200497P 1997-10-17 1997-10-17
US062,004 1997-10-17
US09/160,681 US6434384B1 (en) 1997-10-17 1998-09-25 Non-uniform multi-beam satellite communications system and method
US160,681 1998-09-25

Publications (2)

Publication Number Publication Date
CA2251320A1 true CA2251320A1 (en) 1999-04-17
CA2251320C CA2251320C (en) 2004-01-06

Family

ID=26741747

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002251320A Expired - Lifetime CA2251320C (en) 1997-10-17 1998-10-19 Non-uniform multi-beam satellite communications system and method

Country Status (3)

Country Link
US (4) US6434384B1 (en)
EP (2) EP0910180B1 (en)
CA (1) CA2251320C (en)

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US11502745B2 (en) 2015-07-31 2022-11-15 Viasat, Inc. Flexible capacity satellite constellation

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US11502745B2 (en) 2015-07-31 2022-11-15 Viasat, Inc. Flexible capacity satellite constellation

Also Published As

Publication number Publication date
EP1770877B1 (en) 2011-12-07
EP0910180A2 (en) 1999-04-21
US6463281B1 (en) 2002-10-08
EP0910180B1 (en) 2007-02-14
US6434384B1 (en) 2002-08-13
US20020006795A1 (en) 2002-01-17
US6456846B2 (en) 2002-09-24
EP1770877A3 (en) 2008-08-27
EP1770877A2 (en) 2007-04-04
US6463282B2 (en) 2002-10-08
CA2251320C (en) 2004-01-06
EP0910180A3 (en) 2003-05-21
US20010036826A1 (en) 2001-11-01

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