NO994942L - Fremgangsmåte for overföring av data, samt radiosystem - Google Patents

Fremgangsmåte for overföring av data, samt radiosystem

Info

Publication number
NO994942L
NO994942L NO994942A NO994942A NO994942L NO 994942 L NO994942 L NO 994942L NO 994942 A NO994942 A NO 994942A NO 994942 A NO994942 A NO 994942A NO 994942 L NO994942 L NO 994942L
Authority
NO
Norway
Prior art keywords
terminal equipment
direct access
signature sequence
data
access signal
Prior art date
Application number
NO994942A
Other languages
English (en)
Other versions
NO994942D0 (no
Inventor
Juha Korno
Antti Toskala
Pekka Soininen
Kari Kalliojorvi
Ari Hottinen
Risto Wichman
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Publication of NO994942D0 publication Critical patent/NO994942D0/no
Publication of NO994942L publication Critical patent/NO994942L/no

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0838—Random access procedures, e.g. with 4-step access using contention-free random access [CFRA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Oppfinnelsen angår en fremgangsmåte for dataoverføring, anvendt i et radiosystem av CDMA-type. En basestasjon og flere terminalutstyr utveksler data i det minste i en pakkesvitsjet modus, og et terminalutstyr sender til basestasjonen, på en direkte tilgangs-kanal, et direkte tilgangs-signal som omfatter minst en innledning (100) og en datadel (102) multiplisert med en spredningskode. Et forhåndsbestemt sett av spredningskoder og signatursekvenser (104) er lagret i terminal- utstyret, og hver signatursekvens (104) bestemmer en spredningskode. Terminalutstyet velger en signatursekvens (104) blant settet av signatursekvenser, ved hjelp av en vilkårlig prosess, og legger den . valgte signatursekvensen (104) til direkte tilgangs-signalets innledning (100). Videre benytter terminalutstyret den spredningskode som tilsvarer den valgte signatursekvensen (104), i datadelen (102) av direkte tilgangs-signalet. Interferenskansellering utføres i basestasjonen i samsvar med signatursekvensen (104) i det mottatte direkte tilgangs- signalets innledning (100), slik at i det minste den interferens som forårsakes av den mottatte datadelen (102), elimineres fra minst ett annet mottatt signal, for å forbedre deteksjonen.
NO994942A 1998-02-12 1999-10-11 Fremgangsmåte for overföring av data, samt radiosystem NO994942L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI980321A FI105741B (fi) 1998-02-12 1998-02-12 Tiedonsiirtomenetelmä ja radiojärjestelmä
PCT/FI1999/000107 WO1999041845A1 (en) 1998-02-12 1999-02-11 A data transmission method and a radio system

Publications (2)

Publication Number Publication Date
NO994942D0 NO994942D0 (no) 1999-10-11
NO994942L true NO994942L (no) 1999-10-11

Family

ID=8550823

Family Applications (1)

Application Number Title Priority Date Filing Date
NO994942A NO994942L (no) 1998-02-12 1999-10-11 Fremgangsmåte for overföring av data, samt radiosystem

Country Status (8)

Country Link
US (2) US6594248B1 (no)
EP (1) EP0974203A1 (no)
JP (1) JP2001520840A (no)
CN (1) CN1256812A (no)
AU (1) AU2426599A (no)
FI (1) FI105741B (no)
NO (1) NO994942L (no)
WO (1) WO1999041845A1 (no)

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Also Published As

Publication number Publication date
US20020114297A1 (en) 2002-08-22
AU2426599A (en) 1999-08-30
NO994942D0 (no) 1999-10-11
FI105741B (fi) 2000-09-29
FI980321L (fi) 1999-08-13
WO1999041845A1 (en) 1999-08-19
US6594248B1 (en) 2003-07-15
US6625138B2 (en) 2003-09-23
EP0974203A1 (en) 2000-01-26
JP2001520840A (ja) 2001-10-30
FI980321A0 (fi) 1998-02-12
CN1256812A (zh) 2000-06-14

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