BR9915856A - Transmissão de dados em um sistema de comunicação de espectro espalhado - Google Patents

Transmissão de dados em um sistema de comunicação de espectro espalhado

Info

Publication number
BR9915856A
BR9915856A BR9915856-6A BR9915856A BR9915856A BR 9915856 A BR9915856 A BR 9915856A BR 9915856 A BR9915856 A BR 9915856A BR 9915856 A BR9915856 A BR 9915856A
Authority
BR
Brazil
Prior art keywords
data
remote units
base station
spread spectrum
communication system
Prior art date
Application number
BR9915856-6A
Other languages
English (en)
Inventor
Kenneth A Felix
Amitava Grosh
Mark C Cudak
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of BR9915856A publication Critical patent/BR9915856A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes
    • H04J13/20—Allocation of orthogonal codes having an orthogonal variable spreading factor [OVSF]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0044—OVSF [orthogonal variable spreading factor]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

<B>TRANSMISSãO DE DADOS EM UM SISTEMA DE COMUNICAçãO DE ESPECTRO ESPALHADO<D> Unidades remotas (113) com grandes quantidades de dados a transmitir serão dinamicamente designadas códigos OVSF (Fator de Espalhamento de Variável Ortogonal) que correspondem a velocidades de dados mais altas e as unidades remotas (113) com quantidades mais baixas de dados a serem transmitidos serão designadas códigos OVSF que correspondem a velocidades de dados mais baixas. Adicionalmente, em uma versão alternativa da presente invenção, quando a interferência do sistema tornar-se maior do que um limite predeterminado, a velocidade de dados entre a estação base (100) e as unidades remotas (113) em comunicação com a estação base (100) é reduzida. A redução da velocidade de dados entre a estação base (100) e as unidades remotas (113) ocorre pela modificação dos códigos OVSF atuais utilizados tanto pelas unidades remotas (113) como pela estação base (100).
BR9915856-6A 1998-12-03 1999-12-02 Transmissão de dados em um sistema de comunicação de espectro espalhado BR9915856A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/204,702 US6233231B1 (en) 1998-12-03 1998-12-03 Data transmission within a spread-spectrum communication system
PCT/US1999/028540 WO2000033476A1 (en) 1998-12-03 1999-12-02 Data transmission within a spread-spectrum communication system

Publications (1)

Publication Number Publication Date
BR9915856A true BR9915856A (pt) 2001-08-21

Family

ID=22759072

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9915856-6A BR9915856A (pt) 1998-12-03 1999-12-02 Transmissão de dados em um sistema de comunicação de espectro espalhado

Country Status (4)

Country Link
US (1) US6233231B1 (pt)
EP (1) EP1135867A4 (pt)
BR (1) BR9915856A (pt)
WO (1) WO2000033476A1 (pt)

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Also Published As

Publication number Publication date
EP1135867A1 (en) 2001-09-26
WO2000033476A1 (en) 2000-06-08
EP1135867A4 (en) 2003-02-12
US6233231B1 (en) 2001-05-15

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B07A Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]
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