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AR019843A1 - Estructuras de marcos para un canal de acceso aleatorio de un sistema de comunicaciones moviles, sistema y metodo para detectar una solicitud de acceso aleatorio en un sistema cdma, y sistema de comunicaciones moviles - Google Patents

Estructuras de marcos para un canal de acceso aleatorio de un sistema de comunicaciones moviles, sistema y metodo para detectar una solicitud de acceso aleatorio en un sistema cdma, y sistema de comunicaciones moviles

Info

Publication number
AR019843A1
AR019843A1 ARP990102235A ARP990102235A AR019843A1 AR 019843 A1 AR019843 A1 AR 019843A1 AR P990102235 A ARP990102235 A AR P990102235A AR P990102235 A ARP990102235 A AR P990102235A AR 019843 A1 AR019843 A1 AR 019843A1
Authority
AR
Argentina
Prior art keywords
random access
mobile communications
channel
communications system
detect
Prior art date
Application number
ARP990102235A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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 Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of AR019843A1 publication Critical patent/AR019843A1/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • 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
    • 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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access

Landscapes

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

Abstract

Se revela una estructura de marcos de canal físico comun de enlace ascendente (canal de acceso aleatorio) con una porcion de preámbulo y una porcion dedatos separaradas. La estacion de base usa el preámbulo para detectar que una estacion movil estái ntentando una solicitud de acceso aleatorio. La porcion dedatos del canal incluye los datos de usuario y los símbolos de piloto que proporcionan la energía para efectuar la estimacion de canal durante la recepcion dela porcion de datos. Se insertapr eferentemente un intervalo de proteccion (Tg) entre la porcion de preámbulo y la porcion de datos del marco, que permite quela deteccion de los datos se produzca durante un período inactivo en espera. De modo que resultan compatibles lasestructuras de marcos tanto para el canal deenlace ascendente físico comun (de acceso aleatorio) como para el canal de enlace ascendente físico dedicado (de tráfico).
ARP990102235A 1998-05-15 1999-05-12 Estructuras de marcos para un canal de acceso aleatorio de un sistema de comunicaciones moviles, sistema y metodo para detectar una solicitud de acceso aleatorio en un sistema cdma, y sistema de comunicaciones moviles AR019843A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/079,438 US6643275B1 (en) 1998-05-15 1998-05-15 Random access in a mobile telecommunications system

Publications (1)

Publication Number Publication Date
AR019843A1 true AR019843A1 (es) 2002-03-20

Family

ID=22150549

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP990102235A AR019843A1 (es) 1998-05-15 1999-05-12 Estructuras de marcos para un canal de acceso aleatorio de un sistema de comunicaciones moviles, sistema y metodo para detectar una solicitud de acceso aleatorio en un sistema cdma, y sistema de comunicaciones moviles

Country Status (15)

Country Link
US (2) US6643275B1 (es)
EP (1) EP1078478B1 (es)
JP (1) JP3792512B2 (es)
KR (1) KR100685660B1 (es)
CN (1) CN1244247C (es)
AR (1) AR019843A1 (es)
AU (1) AU766788B2 (es)
BR (1) BR9910499B1 (es)
CA (1) CA2331997C (es)
DE (1) DE69932514T2 (es)
MY (1) MY124697A (es)
RU (1) RU2227372C2 (es)
TW (1) TW466882B (es)
WO (1) WO1999060729A1 (es)
ZA (1) ZA200006122B (es)

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