H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 17/00 (2006.01) H04L 1/00 (2006.01) H04L 1/12 (2006.01) H04Q 7/38 (2006.01) H04Q 7/30 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2187669
The invention relates to a method for adapting the air interface in a radiocommunication system towards mobiles so as to provide for bidirectional digital signal exchanges between at least one mobile and at least one base station, said system providing at least two coding modes (93¿M?, 93¿D?), each mode corresponding to a predetermined source coding and channel coding for the transmission of a useful signal, for each transmission direction, each source coding corresponding to a given useful flow rate, and each channel coding corresponding to a given coding yield, and therefore to a given total flow rate, for a given source coding; during a communication between a mobile and a base station, two distinct analyses of the transmission quality are carried out, for each transmission direction respectively, and for each of said transmission directions, one of said coding modes (92¿M?, 92¿D?) is selected as a function of the corresponding analysis of the transmission quality.
L'invention concerne un procédé d'adaptation de l'interface air, dans un système de radiocommunication vers des mobiles permettant de réaliser des échanges de signaux numériques bidirectionnels entre au moins un mobile et au moins une station de base, ledit système prévoyant au moins deux modes de codage (93M, 93D), chaque mode correspondant à un codage source et à un codage canal prédéterminés pour la transmission d'un signal utile, pour chaque sens de transmissions, chaque codage source correspondant à un débit utile donné, et chaque codage canal correspondant à un rendement de codage donné, et donc à un débit total donné, pour un codage source donné. Lors d'une communication entre un mobile et une station de base, on réalise deux analyses distinctes de la qualité de transmission, pour chaque sens de transmission respectivement, et, pour chacun desdits sens de transmission, on sélectionne (92M, 92D) un desdits modes de codage, en fonction de l'analyse correspondante de qualité de transmission.
Delprat Marc
Le Strat Evelyne
Alcatel Cit
Alcatel Mobile Communication France
Robic
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