Antennin suuntauskuvion ohjaus

摘要

An antenna pattern can be modified in a radio system including at least one user terminal and at least one base station. A user terminal and a base station communicate using at least two channels of different type with time slots of a time division multiple access method. The base station forms at least two different antenna patterns per each channel, the at least two antenna patterns of each channel differing from each other in a vertical direction during at least two different time slots.