WO1998037647A3 - Method to gain access to a base station in a discrete multitone spread spectrum communications system - Google Patents

Method to gain access to a base station in a discrete multitone spread spectrum communications system Download PDF

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Publication number
WO1998037647A3
WO1998037647A3 PCT/US1998/003557 US9803557W WO9837647A3 WO 1998037647 A3 WO1998037647 A3 WO 1998037647A3 US 9803557 W US9803557 W US 9803557W WO 9837647 A3 WO9837647 A3 WO 9837647A3
Authority
WO
WIPO (PCT)
Prior art keywords
base station
spread spectrum
discrete multitone
communications system
gain access
Prior art date
Application number
PCT/US1998/003557
Other languages
French (fr)
Other versions
WO1998037647A2 (en
Inventor
David Gibbons
Robert Lee Maxwell
David James Ryan
Original Assignee
At & T Wireless Services 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 At & T Wireless Services Inc filed Critical At & T Wireless Services Inc
Priority to EP98911401A priority Critical patent/EP0962064B1/en
Priority to DE69834478T priority patent/DE69834478T2/en
Priority to CA002281818A priority patent/CA2281818C/en
Publication of WO1998037647A2 publication Critical patent/WO1998037647A2/en
Publication of WO1998037647A3 publication Critical patent/WO1998037647A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals

Abstract

In a discrete multitone spread spectrum system, a base station distinguishes between normal collisions and noise bursts when receiving access request signals for remote units on a common access channel. The base station is then able to reply to the remote units with information about the quality of the common access channel and why their transmissions where not successful. The remote units then use this information to adapt their retry processes to the channel's quality, depending on whether there was a noise burst, a normal collision, or a successful transmission on the channel.
PCT/US1998/003557 1997-02-24 1998-02-24 Method to gain access to a base station in a discrete multitone spread spectrum communications system WO1998037647A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98911401A EP0962064B1 (en) 1997-02-24 1998-02-24 Out of channel cyclic redundancy code method for a discrete multitone spread spectrum communications system
DE69834478T DE69834478T2 (en) 1997-02-24 1998-02-24 A method of accessing a base station in a discrete multi-tone spread spectrum transmission system
CA002281818A CA2281818C (en) 1997-02-24 1998-02-24 Method to gain access to a base station in a discrete multitone spread spectrum communications system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/803,831 1997-02-24
US08/803,831 US6289037B1 (en) 1997-02-24 1997-02-24 Out of channel cyclic redundancy code method for a discrete multitone spread spectrum communications system

Publications (2)

Publication Number Publication Date
WO1998037647A2 WO1998037647A2 (en) 1998-08-27
WO1998037647A3 true WO1998037647A3 (en) 1998-10-29

Family

ID=25187549

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/003557 WO1998037647A2 (en) 1997-02-24 1998-02-24 Method to gain access to a base station in a discrete multitone spread spectrum communications system

Country Status (5)

Country Link
US (2) US6289037B1 (en)
EP (1) EP0962064B1 (en)
CA (1) CA2281818C (en)
DE (1) DE69834478T2 (en)
WO (1) WO1998037647A2 (en)

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US6289037B1 (en) * 1997-02-24 2001-09-11 At&T Wireless Services Inc. Out of channel cyclic redundancy code method for a discrete multitone spread spectrum communications system
FR2773427B1 (en) * 1998-01-08 2000-02-04 Alsthom Cge Alcatel METHOD FOR SECURING INFORMATION TRANSMISSIONS MADE THROUGH AN OPEN TELECOMMUNICATIONS NETWORK
US6643281B1 (en) 1998-03-05 2003-11-04 At&T Wireless Services, Inc. Synchronization preamble method for OFDM waveforms in a communications system
US6490260B1 (en) * 1998-08-03 2002-12-03 Samsung Electronics, Co., Ltd. Transmitter with increased traffic throughput in digital mobile telecommunication system and method for operating the same
DE19845109A1 (en) * 1998-09-30 2000-04-13 Siemens Ag Method for evaluating a presentation layer data unit
US6639899B1 (en) * 1999-10-14 2003-10-28 Alcatel Canada Inc. Method and apparatus for providing integral cell payload integrity verification in ATM Telecommunication devices
CA2308643A1 (en) * 1999-10-14 2001-04-14 Alcatel Networks Corporation Societe Par Actions De Regime Federal De Re Seaux Alcatel Method and apparatus for providing integral cell payload integrity verification and detecting defective modules in telecommunication devices
DE10009444A1 (en) * 2000-02-29 2001-09-06 Philips Corp Intellectual Pty Operating method for a mobile phone
JP2002027537A (en) * 2000-07-10 2002-01-25 Sharp Corp Data communication system using portable telephone
US6807578B2 (en) * 2001-03-14 2004-10-19 International Business Machines Corporation Nack suppression for multicast protocols in mostly one-way networks
US7298718B2 (en) * 2001-05-07 2007-11-20 Qualcomm Incorporated Channel allocations in a communications system
US7590386B2 (en) 2002-04-18 2009-09-15 Interdigital Technology Corporation Method for control of contention-based wireless access
US7796574B2 (en) 2002-09-10 2010-09-14 Texas Instruments Incorporated Multi-carrier reception for ultra-wideband (UWB) systems
MXPA05005932A (en) * 2002-12-04 2005-08-18 Interdigital Tech Corp Detection of channel quality indicator.
WO2004084438A1 (en) * 2003-03-17 2004-09-30 Samsung Electronics Co. Ltd. Power control method and apparatus using control information in mobile communication system
US20040190447A1 (en) * 2003-03-26 2004-09-30 Dacosta Behram M. Dynamic routing for data transmissions
EP1800427B9 (en) 2004-10-15 2012-11-21 Aware, Inc. Dmt symbol repetition in the presence of impulse noise
US7827475B2 (en) * 2005-05-02 2010-11-02 Nokia Corporation Enhanced random access transmission
US20070019805A1 (en) * 2005-06-28 2007-01-25 Trustees Of Boston University System employing systematic robust error detection coding to protect system element against errors with unknown probability distributions
US7324913B2 (en) * 2006-02-01 2008-01-29 International Business Machines Corporation Methods and apparatus for testing a link between chips
EP2134021B1 (en) * 2007-01-09 2014-10-08 Huawei Technologies Co., Ltd. Control information transmission/reception method, and device thereof
US9781685B2 (en) 2013-11-21 2017-10-03 At&T Intellectual Property I, L.P. Self-adaptive coverage of wireless networks
US10771194B2 (en) * 2018-05-25 2020-09-08 Arm Limited Interconnection network for integrated circuit

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EP0667695A1 (en) * 1991-08-23 1995-08-16 Kabushiki Kaisha Toshiba Radio information and communication system using multicarrier spread-spectrum transmission system
WO1997005709A1 (en) * 1995-07-31 1997-02-13 Qualcomm Incorporated Adaptive despreader

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Publication number Priority date Publication date Assignee Title
EP0667695A1 (en) * 1991-08-23 1995-08-16 Kabushiki Kaisha Toshiba Radio information and communication system using multicarrier spread-spectrum transmission system
WO1997005709A1 (en) * 1995-07-31 1997-02-13 Qualcomm Incorporated Adaptive despreader

Non-Patent Citations (1)

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Title
CHEN Q ET AL: "PERFORMANCE OF A CODED MULTI-CARRIER DS-CDMA SYSTEM IN MULTI-PATH FADING CHANNELS", WIRELESS PERSONAL COMMUNICATIONS, vol. 2, no. 1/02, 1 January 1995 (1995-01-01), pages 167 - 183, XP000589618 *

Also Published As

Publication number Publication date
EP0962064A2 (en) 1999-12-08
CA2281818C (en) 2003-04-01
US6639935B2 (en) 2003-10-28
CA2281818A1 (en) 1998-08-27
WO1998037647A2 (en) 1998-08-27
DE69834478T2 (en) 2007-05-03
EP0962064B1 (en) 2006-05-10
US20010040912A1 (en) 2001-11-15
DE69834478D1 (en) 2006-06-14
US6289037B1 (en) 2001-09-11

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