WO1997024884A3 - Time compressing transponder - Google Patents

Time compressing transponder Download PDF

Info

Publication number
WO1997024884A3
WO1997024884A3 PCT/US1996/020161 US9620161W WO9724884A3 WO 1997024884 A3 WO1997024884 A3 WO 1997024884A3 US 9620161 W US9620161 W US 9620161W WO 9724884 A3 WO9724884 A3 WO 9724884A3
Authority
WO
WIPO (PCT)
Prior art keywords
signals
rate
transponder
sampled
buffer
Prior art date
Application number
PCT/US1996/020161
Other languages
French (fr)
Other versions
WO1997024884A2 (en
Inventor
Paul W Dent
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Priority to AU14253/97A priority Critical patent/AU1425397A/en
Priority to JP09524401A priority patent/JP2000506689A/en
Publication of WO1997024884A2 publication Critical patent/WO1997024884A2/en
Publication of WO1997024884A3 publication Critical patent/WO1997024884A3/en

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
    • H04B7/18515—Transmission equipment in satellites or space-based relays

Abstract

A method for supporting calls between two mobile stations within a satellite communication system is disclosed. First, when signals transmitted by a first mobile station using a narrowband transmission format are received at a satellite relay station, the received signals are sampled and digitized. The sampled and digitized signals are then stored in a buffer at a first rate. The stored data is then read out of the buffer at a faster rate than the first rate and modulated onto a downlink frequency to create a wideband transmission format. The modulated signals are then transmitted to the second mobile station.
PCT/US1996/020161 1995-12-29 1996-12-23 Time compressing transponder WO1997024884A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU14253/97A AU1425397A (en) 1995-12-29 1996-12-23 Time compressing transponder
JP09524401A JP2000506689A (en) 1995-12-29 1996-12-23 Time compression transponder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58111095A 1995-12-29 1995-12-29
US08/581,110 1995-12-29

Publications (2)

Publication Number Publication Date
WO1997024884A2 WO1997024884A2 (en) 1997-07-10
WO1997024884A3 true WO1997024884A3 (en) 1997-09-12

Family

ID=24323925

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/020161 WO1997024884A2 (en) 1995-12-29 1996-12-23 Time compressing transponder

Country Status (4)

Country Link
JP (1) JP2000506689A (en)
CN (1) CN1212094A (en)
AU (1) AU1425397A (en)
WO (1) WO1997024884A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6081709A (en) * 1997-08-29 2000-06-27 Ericsson, Inc. Mobile satellite radiotelephone systems and methods including mobile radiotelephone bandwidth conversion
CA2299642C (en) * 1999-03-16 2002-10-15 Trw Inc. Gated power time division downlink for a processing satellite
KR20070100430A (en) 2003-06-30 2007-10-11 데코링크 와이어리스 엘티디. Method for automatic control of rf output level of a repeater
WO2006051262A1 (en) * 2004-11-15 2006-05-18 Bae Systems Plc Data communications system
CN101106807B (en) * 2006-07-12 2012-04-11 株式会社Ntt都科摩 A cellular network based on relay and space division duplex communication method
US10128939B2 (en) 2015-04-10 2018-11-13 Viasat, Inc. Beamformer for end-to-end beamforming communications system
EP3651378B1 (en) 2015-04-10 2022-08-31 ViaSat Inc. Ground based antenna beamforming for communications between access nodes and users terminals linked by a relay such as a satellite
US10187141B2 (en) 2015-04-10 2019-01-22 Viasat, Inc. Cross-band system for end-to-end beamforming
KR102258635B1 (en) 2016-10-21 2021-05-31 비아셋, 인크 Terrestrial beamforming communication using mutually synchronized spatial multiplexing feeder links
CN110428376B (en) * 2019-07-24 2023-08-11 桂林理工大学 FPGA-based linear array CCD satellite image on-satellite geometric correction method
JP7399594B2 (en) 2021-10-29 2023-12-18 日本無線株式会社 wireless communication system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145573A (en) * 1977-06-13 1979-03-20 Bell Telephone Laboratories, Incorporated Digital satellite system and method for serving users of differing capacities
EP0139034A1 (en) * 1983-10-21 1985-05-02 ANT Nachrichtentechnik GmbH Process for the transmission of information services by satellites
GB2221368A (en) * 1988-07-08 1990-01-31 Nec Corp Frame converter using a dual-port random access memory
WO1991007024A1 (en) * 1989-11-06 1991-05-16 Motorola, Inc. Satellite signalling system having a signal beam with a variable beam area
EP0507384A2 (en) * 1991-04-03 1992-10-07 Philips Electronics Uk Limited TDMA transmission system with time slots of different durations
WO1992019050A1 (en) * 1991-04-15 1992-10-29 Motorola, Inc. Global satellite communication system with geographic protocol conversion
US5199031A (en) * 1990-08-31 1993-03-30 Telefonaktiebolaget L M Ericsson Method and system for uniquely identifying control channel time slots
WO1995019078A1 (en) * 1994-01-11 1995-07-13 Ericsson Ge Mobile Communications Inc. A cellular/satellite communications system with improved frequency re-use
WO1996028900A1 (en) * 1995-03-10 1996-09-19 Ericsson Inc. Method and apparatus for mobile station-to-mobile station calls in a mobile satellite communications system with on-board tdma format conversion

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145573A (en) * 1977-06-13 1979-03-20 Bell Telephone Laboratories, Incorporated Digital satellite system and method for serving users of differing capacities
EP0139034A1 (en) * 1983-10-21 1985-05-02 ANT Nachrichtentechnik GmbH Process for the transmission of information services by satellites
GB2221368A (en) * 1988-07-08 1990-01-31 Nec Corp Frame converter using a dual-port random access memory
WO1991007024A1 (en) * 1989-11-06 1991-05-16 Motorola, Inc. Satellite signalling system having a signal beam with a variable beam area
US5199031A (en) * 1990-08-31 1993-03-30 Telefonaktiebolaget L M Ericsson Method and system for uniquely identifying control channel time slots
EP0507384A2 (en) * 1991-04-03 1992-10-07 Philips Electronics Uk Limited TDMA transmission system with time slots of different durations
WO1992019050A1 (en) * 1991-04-15 1992-10-29 Motorola, Inc. Global satellite communication system with geographic protocol conversion
WO1995019078A1 (en) * 1994-01-11 1995-07-13 Ericsson Ge Mobile Communications Inc. A cellular/satellite communications system with improved frequency re-use
WO1996028900A1 (en) * 1995-03-10 1996-09-19 Ericsson Inc. Method and apparatus for mobile station-to-mobile station calls in a mobile satellite communications system with on-board tdma format conversion

Also Published As

Publication number Publication date
CN1212094A (en) 1999-03-24
JP2000506689A (en) 2000-05-30
WO1997024884A2 (en) 1997-07-10
AU1425397A (en) 1997-07-28

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