Patent ID: 6928296
Filing Date: 2005-08-09
Classification: H04B

Abstract:
1. A base station apparatus, which assigns a shared channel shared by a plurality of communication terminal apparatuses including a first communication terminal apparatus, the base station apparatus comprising: an estimator that estimates a direction of arrival of a signal transmitted from each of the plurality of communication terminal apparatuses; a determiner that determines, based on a difference between a direction of arrival of a signal from the first communication terminal apparatus and a direction of arrival of a signal from each communication terminal apparatus other than the first communication terminal apparatus of the plurality of communication terminal apparatuses, a communication terminal apparatus to which the shared channel is assigned after the first communication terminal apparatus, to determine an order of communication terminal apparatuses to which the shared channel is assigned; and a transmitter that forms a directivity in the estimated direction of arrival in accordance with the determined order, and transmits a shared channel signal to each of the plurality of communication terminal apparatuses.