Terminal in digital mobile radio relay system, transmission power regulation method and system thereof

A terminal in a digital mobile radio relay system, comprising:

• a first receiving unit adapted to receive an idle frame transmitted by a repeater transceiver, wherein information of a transmission power of the repeater transceiver is carried in the idle frame;
• a power obtaining unit adapted to obtain the transmission power of the repeater transceiver from the information carried in the idle frame;
• a transmitting unit adapted to transmit data in a preset transmission time slot after entering a transmitting state is entered;
• a second receiving unit adapted to receive a signal from the repeater transceiver in a reverse channel and calculate a strength value of the received signal;
• and
• a calculating unit adapted to determine a transmission power of a next frame based on the transmission power of the repeater transceiver and the strength value of the received signal, in the case that data is to be continuously transmitted by the transmitting unit,
• wherein the transmitting unit is further adapted to transmit the next frame in a preset transmission time slot by using the transmission power of the next frame determined by the calculating unit.

A system for adjusting a transmission power of a terminal in a digital mobile radio relay system, comprising a terminal and a repeater transceiver, wherein

• the repeater transceiver is adapted to transmit an idle frame, wherein information of a transmission power of the repeater transceiver is carried in the idle frame;
• and
• the terminal is adapted to receive the idle frame transmitted by the repeater transceiver;
• obtain the transmission power of the repeater transceiver from the information carried in the idle frame;
• transmit data in a preset transmission time slot after entering a transmitting state;
• receive a signal from the repeater transceiver in a reverse channel and calculate a strength value of the received signal;
• determine a transmission power of a next frame based on the transmission power of the repeater transceiver and the strength value of the received signal, in the case that data is to be continuously transmitted;
• and transmit the next frame of data in a preset transmission time slot by using the determined transmission power of the next frame.