H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 72/12 (2009.01) H04W 52/50 (2009.01) H04B 7/005 (2006.01) H04L 5/02 (2006.01) H04L 12/56 (2006.01) H04J 13/00 (2006.01)
Patent
CA 2434070
With the object of efficiently transmitting a variety of different information signals by utilizing the multi-carrier characteristics of Multi-carrier/DS-CDMA, the present invention is characterized in that, when, in an uplink transmission from a plurality of mobile stations to a base station, the mobile stations transmit a preamble to the base station before transmitting an information symbol sequence, the mobile stations individually select a carrier from among a plurality of carriers, and, up until receiving a preamble receipt confirmation signal from the base station with a prescribed maximum number of preamble transmissions serving as an upper limit number, the mobile stations repeatedly transmit a preamble by means of the selected carrier and vary the transmission power used for the transmissions of each carrier.
Dans un système AMCR numérique à porteuses multiples, on transmet efficacement différents signaux d'information en utilisant les caractéristiques des porteuses multiples. Dans la voie ascendante, les émission de chacune des différentes stations mobiles vers la station de base comprennent un préambule précédant la transmission des séries de symboles d'information. Chacune des stations mobiles sélectionne indépendamment une porteuse parmi l'ensemble des porteuses et transmet répétitivement le préambule sur ladite porteuse jusqu'à réception d'un AR de la station de base avant d'atteindre la limite supérieure prédéterminée du décompte de transmission. Chacune des stations mobiles modifie la puissance d'émission des différentes porteuses.
Atarashi Hiroyuki
Sawahashi Mamoru
Suwa Shingo
Fetherstonhaugh & Co.
Ntt Docomo Inc.
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