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1. WO2000025435 - METHOD FOR CONTROLLING MEMORY ACCESS IN RAKE RECEIVERS WITH EARLY-LATE TRACKING

Publication Number WO/2000/025435
Publication Date 04.05.2000
International Application No. PCT/DE1999/003430
International Filing Date 27.10.1999
Chapter 2 Demand Filed 23.05.2000
IPC
H04B 1/707 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
707using direct sequence modulation
CPC
H04B 1/7085
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
69Spread spectrum techniques
707using direct sequence modulation
7073Synchronisation aspects
7085using a code tracking loop, e.g. a delay-locked loop
H04B 1/7117
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
69Spread spectrum techniques
707using direct sequence modulation
7097Interference-related aspects
711the interference being multi-path interference
7115Constructive combining of multi-path signals, i.e. RAKE receivers
7117Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
H04B 1/712
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
69Spread spectrum techniques
707using direct sequence modulation
7097Interference-related aspects
711the interference being multi-path interference
7115Constructive combining of multi-path signals, i.e. RAKE receivers
712Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
Applicants
  • SIEMENS AKTIENGESELLSCHAFT [DE]/[DE] (AllExceptUS)
  • FALKENBERG, Andreas [DE]/[DE] (UsOnly)
  • BRAAM, Reinhold [DE]/[DE] (UsOnly)
  • NIEMEYER, Ulf [DE]/[DE] (UsOnly)
  • ROHE, Christoph [DE]/[DE] (UsOnly)
  • SKUK, Oskar [IT]/[AT] (UsOnly)
Inventors
  • FALKENBERG, Andreas
  • BRAAM, Reinhold
  • NIEMEYER, Ulf
  • ROHE, Christoph
  • SKUK, Oskar
Common Representative
  • SIEMENS AKTIENGESELLSCHAFT
Priority Data
198 49 532.327.10.1998DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUM STEUERN VON SPEICHERZUGRIFFEN BEI 'RAKE'-EMPFÄNGERN MIT 'EARLY-LATE TRACKING'
(EN) METHOD FOR CONTROLLING MEMORY ACCESS IN RAKE RECEIVERS WITH EARLY-LATE TRACKING
(FR) PROCEDE DE REGULATION D'ACCES MEMOIRE DANS DES RECEPTEURS RAKE A SUIVI ANTICIPE-DIFFERE DANS DES SYSTEMES DE TELECOMMUNICATIONS A TELECOMMUNICATION SANS FIL ENTRE DES EMETTEURS/RECEPTEURS MOBILES ET/OU STATIONNAIRES, NOTAMMENT DANS DES SYSTEMES RADIOTELEPHONIQUES MOBILES DE LA TROISIEME GENERATION
Abstract
(DE)
Um Speicherzugriffe bei 'RAKE'-Empfängern mit 'Early-Late Tracking' in Telekommunikationssytemen mit drahtloser Telekommunikation zwischen mobilen und/oder stationären Sende-/Empfangsgeräten, insbesondere in Mobilfunksystemen der dritten Generation, so zu steuern, dass gegenüber den bisherigen bekannten Verfahren die Anzahl der Speicherzugriffe reduziert wird, werden in dem 'RAKE'-Empfänger empfangene Daten, welche beim 'Early-Late-Tracking' von einem 'Early-Finger' gelesen werden, zwischengespeichert und eine Lesezyklus später zum Lesen durch einen 'Late-Finger' beim 'Early-Late-Tracking' an diesen weitergereicht.
(EN)
The aim of the invention is to reduce the number of memory accesses in RAKE receivers with early-late tracking in telecommunications systems operated by wireless telecommunication between mobile and/or stationary transmitters/receivers, especially in third generation mobile radio systems. To this end, data received by the RAKE receiver which is read by an early finger in an early-late tracking step is stored temporarily and is transmitted to a late finger one read cycle later to be read by the late finger in an early-late tracking step.
(FR)
L'invention concerne un procédé permettant de piloter des accès mémoire dans des récepteurs RAKE à suivi anticipé-différé dans des systèmes de télécommunications à télécommunication sans fil entre des émetteurs/récepteurs mobiles et/ou stationnaires, notamment dans des systèmes radiotéléphoniques mobiles de la troisième génération. Afin de piloter ces accès mémoire de manière à en réduire le nombre comparativement aux procédés actuels, les données reçues dans le récepteur RAKE sont lues lors d'un suivi anticipé-différé par un logiciel Finger anticipé, sont mémorisées temporairement et transmises un cycle de lecture après, à un logiciel Finger différé afin d'être lues par ledit logiciel lors du suivi anticipé-différé.
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