GB2335828B - Satellite Communications System - Google Patents

Satellite Communications System

Info

Publication number
GB2335828B
GB2335828B GB9804639A GB9804639A GB2335828B GB 2335828 B GB2335828 B GB 2335828B GB 9804639 A GB9804639 A GB 9804639A GB 9804639 A GB9804639 A GB 9804639A GB 2335828 B GB2335828 B GB 2335828B
Authority
GB
United Kingdom
Prior art keywords
data
formats
rates
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.)
Expired - Lifetime
Application number
GB9804639A
Other versions
GB2335828A8 (en
GB9804639D0 (en
GB2335828A (en
Inventor
Louis Mimis Christodoulides
Howard Ray Feldman
Eyal Trachman
Siu Wah Wong
Hok Shuen Wong
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.)
International Mobile Satellite Organization
Inmarsat Global Ltd
Original Assignee
International Mobile Satellite Organization
Inmarsat Ltd
Inmarsat Two Co
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 International Mobile Satellite Organization, Inmarsat Ltd, Inmarsat Two Co filed Critical International Mobile Satellite Organization
Priority to GB9804639A priority Critical patent/GB2335828B/en
Publication of GB9804639D0 publication Critical patent/GB9804639D0/en
Priority to GB9904575A priority patent/GB2336508B/en
Priority to CA002263280A priority patent/CA2263280C/en
Priority to CA002263277A priority patent/CA2263277A1/en
Priority to FR9902636A priority patent/FR2778517B1/en
Priority to FR9902637A priority patent/FR2775854B1/en
Priority to DE19909576A priority patent/DE19909576A1/en
Priority to JP05738399A priority patent/JP3923208B2/en
Priority to JP11057374A priority patent/JPH11355196A/en
Priority to DE19909575A priority patent/DE19909575A1/en
Priority to US09/262,064 priority patent/US6665361B1/en
Publication of GB2335828A publication Critical patent/GB2335828A/en
Publication of GB2335828A8 publication Critical patent/GB2335828A8/en
Priority to FR0200644A priority patent/FR2823924A1/en
Priority to US10/156,195 priority patent/US20030012152A1/en
Application granted granted Critical
Publication of GB2335828B publication Critical patent/GB2335828B/en
Priority to US10/675,945 priority patent/US7266097B2/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
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • 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
    • H04B7/18532—Arrangements for managing transmission, i.e. for transporting data or a signalling message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC

Abstract

A set of formats and protocols is proposed for a satellite communications system. In these formats, a pilot signal (PS) is inserted after every 25 or 29 data symbols. The formats consist of SCPC frames (F) which may contain either data (D) and in-band signalling information (SU), or only signalling information (SU). In either case, the contents of each frame (F) are error-correction coded before transmission with the same coding rate. Each data frame (F) carries the data content of an integral number of input user data frames (M), each of which comprises four subframes. Different symbol transmission rates are used for different input data rates, the symbol transmission rates being selected so that their different synchronising clock rates can easily be obtained from a common clock. Data bursts may be preceded by a constant power level preamble (P). The formats and protocols satisfy the requirements of a high data rate satellite communications system.
GB9804639A 1998-03-04 1998-03-04 Satellite Communications System Expired - Lifetime GB2335828B (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
GB9804639A GB2335828B (en) 1998-03-04 1998-03-04 Satellite Communications System
GB9904575A GB2336508B (en) 1998-03-04 1999-02-26 Carrier activation for data communications
CA002263280A CA2263280C (en) 1998-03-04 1999-03-02 Method and apparatus for mobile satellite communication
CA002263277A CA2263277A1 (en) 1998-03-04 1999-03-02 Carrier activation for data communications
FR9902636A FR2778517B1 (en) 1998-03-04 1999-03-03 CARRIER ACTIVATION FOR DATA TRANSMISSION
FR9902637A FR2775854B1 (en) 1998-03-04 1999-03-03 METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING DATA, PARTICULARLY IN A MOBILE SATELLITE TELECOMMUNICATIONS SYSTEM
JP05738399A JP3923208B2 (en) 1998-03-04 1999-03-04 Satellite communication system
US09/262,064 US6665361B1 (en) 1998-03-04 1999-03-04 Communication method and apparatus
DE19909576A DE19909576A1 (en) 1998-03-04 1999-03-04 Communication method and device
JP11057374A JPH11355196A (en) 1998-03-04 1999-03-04 Carrier activation for data communication
DE19909575A DE19909575A1 (en) 1998-03-04 1999-03-04 Carrier activation for satellite data communications system
FR0200644A FR2823924A1 (en) 1998-03-04 2002-01-18 CARRIER ACTIVATION FOR DATA TRANSMISSION
US10/156,195 US20030012152A1 (en) 1998-03-04 2002-05-29 Carrier activation for data communications
US10/675,945 US7266097B2 (en) 1998-03-04 2003-10-02 Communication method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9804639A GB2335828B (en) 1998-03-04 1998-03-04 Satellite Communications System

Publications (4)

Publication Number Publication Date
GB9804639D0 GB9804639D0 (en) 1998-04-29
GB2335828A GB2335828A (en) 1999-09-29
GB2335828A8 GB2335828A8 (en) 1999-12-16
GB2335828B true GB2335828B (en) 2003-08-20

Family

ID=10827999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9804639A Expired - Lifetime GB2335828B (en) 1998-03-04 1998-03-04 Satellite Communications System

Country Status (1)

Country Link
GB (1) GB2335828B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3252820B2 (en) 1999-02-24 2002-02-04 日本電気株式会社 Demodulation and modulation circuit and demodulation and modulation method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286219A (en) * 1979-09-27 1981-08-25 Communications Satellite Corporation High resolution frequency synthesizer
WO1991020142A1 (en) * 1990-06-12 1991-12-26 Motorola, Inc. Maximal ratio diversity combining technique
WO1993009617A1 (en) * 1991-11-01 1993-05-13 Motorola, Inc. Multichannel tdm communication system slot phase correction
US5519730A (en) * 1990-06-12 1996-05-21 Jasper; Steven C. Communication signal having a time domain pilot component
WO1996016492A1 (en) * 1994-11-23 1996-05-30 At & T Wireless Services, Inc. System and method for wireless transmission of digital data using differentially encoded pilot words
EP0795969A2 (en) * 1996-03-15 1997-09-17 Matsushita Electric Industrial Co., Ltd. CDMA cellular radio transmission system
WO1997039557A1 (en) * 1996-04-15 1997-10-23 Ericsson Inc. Pilot-symbol-assisted radiotelephone communications

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286219A (en) * 1979-09-27 1981-08-25 Communications Satellite Corporation High resolution frequency synthesizer
WO1991020142A1 (en) * 1990-06-12 1991-12-26 Motorola, Inc. Maximal ratio diversity combining technique
US5519730A (en) * 1990-06-12 1996-05-21 Jasper; Steven C. Communication signal having a time domain pilot component
WO1993009617A1 (en) * 1991-11-01 1993-05-13 Motorola, Inc. Multichannel tdm communication system slot phase correction
WO1996016492A1 (en) * 1994-11-23 1996-05-30 At & T Wireless Services, Inc. System and method for wireless transmission of digital data using differentially encoded pilot words
EP0795969A2 (en) * 1996-03-15 1997-09-17 Matsushita Electric Industrial Co., Ltd. CDMA cellular radio transmission system
WO1997039557A1 (en) * 1996-04-15 1997-10-23 Ericsson Inc. Pilot-symbol-assisted radiotelephone communications

Also Published As

Publication number Publication date
GB2335828A8 (en) 1999-12-16
GB9804639D0 (en) 1998-04-29
GB2335828A (en) 1999-09-29

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20180303