Wireless base station, wireless communication system, and transmission power control method
First Claim
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1. A wireless base station of a wireless communication system including the wireless base station, a wireless terminal, and a relay station configured to relay a wireless signal transceived between the wireless base station and the wireless terminal, the wireless base station comprising:
- a processor configured to perform a second transmission power control different from a first transmission power control, the first transmission power control being performed on a first wireless terminal connected to the wireless base station without the relay station, the second transmission power control being performed on a second wireless terminal connected to the wireless base station through the relay station; and
a transmitter configured to transmit a control message according to the second transmission power control to the second wireless terminal,wherein the second transmission power control maintains a transmission power of the second wireless terminal regardless of a quality of a wireless signal transmitted from the second wireless terminal by transmitting a transmission power control (TPC) command to the second wireless terminal, the transmitted TPC command being set to “
0”
to instruct the second wireless terminal to maintain the transmission power of the second wireless terminal.
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Abstract
A second transmission power control different from a first transmission power control being performed on a first wireless terminal connected to a wireless base station without a relay station is performed on a second wireless terminal connected to the wireless base station through the relay station.
19 Citations
16 Claims
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1. A wireless base station of a wireless communication system including the wireless base station, a wireless terminal, and a relay station configured to relay a wireless signal transceived between the wireless base station and the wireless terminal, the wireless base station comprising:
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a processor configured to perform a second transmission power control different from a first transmission power control, the first transmission power control being performed on a first wireless terminal connected to the wireless base station without the relay station, the second transmission power control being performed on a second wireless terminal connected to the wireless base station through the relay station; and a transmitter configured to transmit a control message according to the second transmission power control to the second wireless terminal, wherein the second transmission power control maintains a transmission power of the second wireless terminal regardless of a quality of a wireless signal transmitted from the second wireless terminal by transmitting a transmission power control (TPC) command to the second wireless terminal, the transmitted TPC command being set to “
0”
to instruct the second wireless terminal to maintain the transmission power of the second wireless terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wireless communication system, comprising:
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a wireless base station; a wireless terminal; and a relay station configured to relay a wireless signal transceived between the wireless base station and the wireless terminal, wherein the wireless base station comprises a first processor configured to perform a second transmission power control different from a first transmission power control, the first transmission power control being performed on a first wireless terminal connected to the wireless base station without the relay station, the second transmission power control being performed on a second wireless terminal connected to the wireless base station through the relay station, and a transmitter configured to transmit a control message according to the second transmission power control to the second wireless terminal, and the second wireless terminal comprises a receiver configured to receive the control message transmitted from the transmitter, and a second processor configured to control a transmission power of the second wireless terminal based on the received control message, wherein the second transmission power control maintains a transmission power of the second wireless terminal regardless of a quality of a wireless signal transmitted from the second wireless terminal by transmitting a transmission power control (TPC) command to the second wireless terminal, the transmitted TPC command being set to “
0”
to instruct the second wireless terminal to maintain the transmission power of the second wireless terminal. - View Dependent Claims (14)
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15. A transmission power control method of a wireless base station in a wireless communication system including the wireless base station, a wireless terminal, and a relay station configured to relay a wireless signal transceived between the wireless base station and the wireless terminal, the method comprising:
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performing a second transmission power control different from a first transmission power control, the first transmission power control being performed on a first wireless terminal connected to the wireless base station without the relay station, the second transmission power control being performed on a second wireless terminal connected to the wireless base station through the relay station; and transmitting a control message according to the second transmission power control to the second wireless terminal, wherein the second transmission power control maintains a transmission power of the second wireless terminal regardless of a quality of a wireless signal transmitted from the second wireless terminal by transmitting a transmission power control (TPC) command to the second wireless terminal, the transmitted TPC command being set to “
0”
to instruct the second wireless terminal to maintain the transmission power of the second wireless terminal. - View Dependent Claims (16)
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Specification