Method and apparatus for transmission and reception of...

Details Method and apparatus for transmission and reception of... Method and apparatus for transmission and reception of...

H - Electricity

04

M

H04M 1/00 (2006.01)

Patent

CA 2579568

Narrowband remote units (101-103) scan over frequencies within a wideband channel spectrum, evaluating frequency-selective channel characteristics. The best sub-channel(s) for communication is determined and reported back to a base station (104) via a channel-quality report message. The base station then utilizes only a narrowband portion, for example, one sub-channel comprised of a plurality of OFDM subcarriers, of the wideband channel for transmitting data to the narrowband unit.

Des unités distantes à large bande (101-103) parcourent les fréquences du spectre d'un canal à large bande en évaluant les caractéristiques des canaux de fréquences sélectionnés. Le ou les meilleurs sous-canaux de communication sont déterminés puis signalés à la station de base (104) par un message précisant la qualité des canaux. La station de base n'utilise qu'une partie à bande étroite, par exemple un sous-canal comprenant plusieurs sous-porteuses OFDM du canal à large bande pour transmettre les données à l'unité à bande étroite.

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