CA2248015A1 - A random access scheme for mobile satellite communications - Google Patents

A random access scheme for mobile satellite communications

Info

Publication number
CA2248015A1
CA2248015A1 CA002248015A CA2248015A CA2248015A1 CA 2248015 A1 CA2248015 A1 CA 2248015A1 CA 002248015 A CA002248015 A CA 002248015A CA 2248015 A CA2248015 A CA 2248015A CA 2248015 A1 CA2248015 A1 CA 2248015A1
Authority
CA
Canada
Prior art keywords
random access
satellite
mobile unit
mobile
information
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
CA002248015A
Other languages
French (fr)
Other versions
CA2248015C (en
Inventor
Amer Hassan
Eric Wang
Stan Reinhold
Larry Massingill
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.)
Ericsson Inc
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
Application filed by Individual filed Critical Individual
Publication of CA2248015A1 publication Critical patent/CA2248015A1/en
Application granted granted Critical
Publication of CA2248015C publication Critical patent/CA2248015C/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
    • H04B7/212—Time-division multiple access [TDMA]
    • 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
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2121—Channels assignment to the different stations
    • H04B7/2123—Variable assignment, e.g. demand assignment
    • 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
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2125—Synchronisation

Abstract

A method for transmitting random access signals from a mobile unit to a satellite or other control station which requires the transmission of less information than in conventional terrestrial cellular or proposed mobile satellite systems. According to the method, the mobile unit acquires synchronization from the satellite and transmits reduced random access information to the satellite, and the satellite calculates time adjustment information for the mobile units based on the reduced random access information. The random access information is reduced by representing a slot number to each mobile unit, and by transmitting only the odd or even status of the frame number desired by the mobile unit.
CA002248015A 1996-03-05 1997-02-12 A random access scheme for mobile satellite communications Expired - Lifetime CA2248015C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/611,490 1996-03-05
US08/611,490 US5822311A (en) 1996-03-05 1996-03-05 Random access scheme for mobile satellite communications
PCT/US1997/002189 WO1997033383A1 (en) 1996-03-05 1997-02-12 A random access scheme for mobile satellite communications

Publications (2)

Publication Number Publication Date
CA2248015A1 true CA2248015A1 (en) 1997-09-12
CA2248015C CA2248015C (en) 2005-06-21

Family

ID=24449222

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002248015A Expired - Lifetime CA2248015C (en) 1996-03-05 1997-02-12 A random access scheme for mobile satellite communications

Country Status (10)

Country Link
US (1) US5822311A (en)
EP (1) EP0885493B1 (en)
JP (1) JP4405592B2 (en)
KR (1) KR100669295B1 (en)
CN (1) CN1184750C (en)
AU (1) AU712723B2 (en)
CA (1) CA2248015C (en)
DE (1) DE69736171T2 (en)
ID (1) ID16765A (en)
WO (1) WO1997033383A1 (en)

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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
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
US6757293B1 (en) 1998-12-02 2004-06-29 Lucent Technologies Inc. Methods and apparatus for providing short RACH frames for fast latency
JP4355107B2 (en) 1998-12-14 2009-10-28 インターデイジタル テクノロジー コーポレーション Random access channel preamble detection
US6574267B1 (en) * 1999-03-22 2003-06-03 Golden Bridge Technology, Inc. Rach ramp-up acknowledgement
JP3601816B2 (en) 1999-05-31 2004-12-15 韓國電子通信研究院 Modulator, terminal, and modulation method in mobile communication system
JP2001333067A (en) * 1999-06-08 2001-11-30 Sony Corp Communication method, communication system and communication terminal
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TW549002B (en) * 1999-08-03 2003-08-21 Koninkl Philips Electronics Nv Radio communication system
US6982969B1 (en) 1999-09-28 2006-01-03 Tachyon, Inc. Method and system for frequency spectrum resource allocation
US6665292B1 (en) 1999-08-27 2003-12-16 Tachyon, Inc. Transmission and reception of TCP/IP data over a wireless communication channel
US6532220B1 (en) 1999-08-27 2003-03-11 Tachyon, Inc. System and method for efficient channel assignment
US6218896B1 (en) 1999-08-27 2001-04-17 Tachyon, Inc. Vectored demodulation and frequency estimation apparatus and method
US6463070B1 (en) 1999-08-27 2002-10-08 Tachyon, Inc. System and method for clock correlated data flow in a multi-processor communication system
US6674731B1 (en) 1999-08-27 2004-01-06 Tachyon, Inc. Transmission and reception of TCP/IP data over a wireless communication channel
US6650636B1 (en) 1999-08-27 2003-11-18 Tachyon, Inc. Transmission and reception of TCP/IP data over a wireless communication channel
US6735188B1 (en) 1999-08-27 2004-05-11 Tachyon, Inc. Channel encoding and decoding method and apparatus
US6977919B1 (en) * 2000-07-31 2005-12-20 Harington Valve Llc Method and apparatus for efficient bandwidth utilization in subscriber unit initialization and synchronization in a time-synchronized communication system
PL2363987T3 (en) 2004-12-23 2014-03-31 Electronics & Telecommunications Res Inst Apparatus for transmitting and receiving data to provide high-speed data comunication and method thereof
US7574224B2 (en) * 2005-06-13 2009-08-11 Qualcomm Incorporated Methods and apparatus for performing timing synchronization with base stations
US8036205B2 (en) 2005-06-13 2011-10-11 Qualcomm Incorporated Methods and apparatus for supporting uplinks with remote base stations
US7974261B2 (en) * 2005-06-13 2011-07-05 Qualcomm Incorporated Basestation methods and apparatus for supporting timing synchronization
CA2651229C (en) * 2006-05-01 2013-03-19 Nokia Corporation Apparatus, method and computer program product providing uplink synchronization through use of dedicated uplink resource assignment
WO2007149690A2 (en) * 2006-06-02 2007-12-27 Qualcomm Incorporated Satellite optimized air interface
EP2685778B1 (en) * 2007-06-06 2015-05-27 Sharp Kabushiki Kaisha Mobile communication system, base station apparatus and mobile station apparatus
CN101394220B (en) * 2008-10-22 2012-03-28 北京航空航天大学 Time slot uniform distribution method oriented to MF-TDMA system
US9030941B2 (en) * 2010-06-16 2015-05-12 Nokia Solutions And Networks Oy Power saving procedure in communications network
CN103220793B (en) * 2012-01-20 2016-05-18 电信科学技术研究院 A kind of satellite communication system cut-in method, Apparatus and system
JP6211846B2 (en) 2013-07-31 2017-10-11 株式会社Ｎｔｔドコモ Mobile station
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US20210352738A1 (en) * 2018-10-15 2021-11-11 Ipcom Gmbh & Co. Kg Random access in a satellite communication system

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Also Published As

Publication number Publication date
US5822311A (en) 1998-10-13
DE69736171D1 (en) 2006-08-03
WO1997033383A1 (en) 1997-09-12
ID16765A (en) 1997-11-06
CA2248015C (en) 2005-06-21
KR19990087524A (en) 1999-12-27
JP4405592B2 (en) 2010-01-27
AU2189797A (en) 1997-09-22
AU712723B2 (en) 1999-11-11
KR100669295B1 (en) 2007-04-25
EP0885493A1 (en) 1998-12-23
CN1217104A (en) 1999-05-19
CN1184750C (en) 2005-01-12
DE69736171T2 (en) 2006-11-09
EP0885493B1 (en) 2006-06-21
JP2000506346A (en) 2000-05-23

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Effective date: 20170213