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1. WO2000041339 - DATA TRANSMISSION METHOD AND RADIO SYSTEM

Publication Number WO/2000/041339
Publication Date 13.07.2000
International Application No. PCT/FI1999/001062
International Filing Date 21.12.1999
Chapter 2 Demand Filed 17.07.2000
IPC
H04B 7/06 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
CPC
H04B 7/061
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0602using antenna switching
0608Antenna selection according to transmission parameters
061using feedback from receiving side
H04B 7/0632
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
0619using feedback from receiving side
0621Feedback content
0632Channel quality parameters, e.g. channel quality indicator [CQI]
H04B 7/0689
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0686Hybrid systems, i.e. switching and simultaneous transmission
0689using different transmission schemes, at least one of them being a diversity transmission scheme
Applicants
  • NOKIA NETWORKS OY [FI/FI]; Keilalahdentie 4 FIN-02150 Espoo, FI (AllExceptUS)
  • KATZ, Marcos [AR/FI]; FI (UsOnly)
Inventors
  • KATZ, Marcos; FI
Agents
  • KOLSTER OY AB; Iso Roobertinkatu 23 P.O.Box 148 FIN-00121 Helsinki, FI
Priority Data
98276321.12.1998FI
Publication Language English (EN)
Filing Language Finnish (FI)
Designated States
Title
(EN) DATA TRANSMISSION METHOD AND RADIO SYSTEM
(FR) PROCESSUS DE TRANSMISSION DE DONNEES ET LIAISON RADIOELECTRIQUE
Abstract
(EN)
The invention relates to a data transmission method and a radio system comprising at least one subscriber terminal (200) and at least one base station (100) comprising an antenna (140, 141), by means of which the base station transmits signals to the subscriber terminal. The subscriber terminal (200) comprises a measuring means (230) which determines the quality of the signals received by the subscriber terminal by comparing the received signals with at least one signal quality threshold level. When only one signal exceeds the threshold, the subscriber terminal (200) sends to the base station (100), which transmitted the signal that exceeded the threshold, a command to use, when transmitting a signal to said subscriber terminal, the antenna with which the signal that exceeded the threshold was transmitted, or the transmission direction to which the signal that exceeded the threshold was transmitted.
(FR)
L'invention concerne un processus de transmission de données et une liaison radioélectrique comprenant au moins un terminal d'abonné (200) et au moins une station de base (100) comprenant une antenne (140, 141), au moyen desquels la station de base transmet des signaux au terminal d'abonné. Le terminal d'abonné (200) comporte un moyen de mesure (230) qui détermine la qualité des signaux reçus par le terminal d'abonné en comparant les signaux reçus à au moins un niveau limite de qualité de signal. Lorsque seulement un signal dépasse la limite, le terminal d'abonné (200) envoie à la station de base (100) ayant transmis ledit signal, une instruction d'utilisation, lors de la transmission d'un signal audit terminal d'abonné, de l'antenne avec laquelle ledit signal a été transmis, ou du sens de transmission dans lequel ledit signal dépassant la limite a été transmis.
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