Base station, user terminal, and transmission control method...

H - Electricity – 04 – J

Patent

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Details

H04J 11/00 (2006.01) H04L 27/01 (2006.01) H04J 1/00 (2006.01)

Patent

CA 2673785

In a radio communication system, a reception channel quality measurement signal transmitted from each user terminal is multiplexed by a distribution type FDMA which allocates a distribution type frequency block formed by frequency sub-carriers discretely distributed in a system bandwidth. The system bandwidth has a binary tree structure. Each division band is divided into two. A base station of the radio communication system includes: means for deciding a transmission bandwidth of a reception channel quality measurement signal for allocation to each user terminal according to a path loss between the local station and the user terminal, which loss has been reported by each user terminal; means for allocating a division band corresponding to the decided transmission bandwidth among the division bandwidths and deciding the transmission frequency; and means for reporting the transmission bandwidth and the transmission frequency.

L'invention concerne, dans un système de communication radio, un signal de mesure de qualité de canal de réception transmis depuis chaque terminal d'utilisateur étant multiplexé par un FDMA de type de distribution qui attribue un bloc de fréquences de type de distribution formé par des sous-porteuses de fréquences distribuées de manière discrète dans une bande passante de système. La bande passante de système a une structure d'arbre binaire. Chaque bande de division est divisée en deux. Une station de base du système de communication radio comprend : des moyens pour décider d'une bande passante de transmission d'un signal de mesure de qualité de canal de réception pour l'attribution à chaque terminal d'utilisateur selon une perte de chemin entre la station locale et le terminal d'utilisateur, ladite perte ayant été signalée par chaque terminal d'utilisateur ; des moyens pour attribuer une bande de division correspondant à la bande passante de transmission décidée parmi les bandes passantes de division et décider de la fréquence de transmission ; et des moyens pour signaler la bande passante de transmission et la fréquence de transmission.

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