| 摘要 |
In a radio communication system (100, 200) using a channel divided into a plurality of time slots, a control signal is transmitted in each time slot and a data signal is transmitted intermittently using a subset of the time slots. The control signal includes a portion which is a predetermined signal, such as a pilot signal, and one or more bits constituting a power control command. The format of the control signal is adapted according to whether or not data is transmitted in the same time slot. When data is not being transmitted, the proportion of the control signal which constitutes a power control command is increased and the energy of the control signal is reduced, at least by reducing the energy of the predetermined signal portion.
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