Method and apparatus for transmitting uplink signals in wireless communication system
First Claim
1. A method for a user equipment (UE) to manage a transmission power for control information in a wireless communication system, the method comprising:
- determining a transmission power of a first physical uplink control channel (PUCCH) including first uplink control information (UCI) to be transmitted via a cell managed by a first base station (BS);
determining a transmission power of a second PUCCH including second UCI to be transmitted via a cell managed by a second BS, wherein the second BS is different from the first BS, and a radio resource control (RRC) function associated with the UE is managed and performed by the first BS only; and
when the UE reaches a maximum power limit due to overlap of the first PUCCH and the second PUCCH, reducing the transmission power of at least the first PUCCH or the second PUCCH as follows;
if the first UCI and the second UCI have different protection priorities, primarily reducing the transmission power of one of the first and second PUCCHs including UCI of a lower protection priority, andif the first UCI and the second UCI have a same protection priority, primarily reducing the transmission power of the second PUCCH.
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Accused Products
Abstract
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a terminal controlling uplink power in a carrier aggregation-based wireless communication system, comprising the steps of: configuring a first cell and a second cell; transmitting a first PUCCH signal from subframe #n in the first cell; and transmitting a second PUCCH signal from subframe #n in the second cell, wherein when the sum of transmit power of the first PUCCH signal and transmit power of the second PUCCHJ signal exceeds a predetermined maximum transmit power configured to the terminal, the transmit power of the PUCCH signal having a lower priority from among the first UCCH signal and the second PUCCH signal is reduced or the transmission is dropped.
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Citations
12 Claims
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1. A method for a user equipment (UE) to manage a transmission power for control information in a wireless communication system, the method comprising:
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determining a transmission power of a first physical uplink control channel (PUCCH) including first uplink control information (UCI) to be transmitted via a cell managed by a first base station (BS); determining a transmission power of a second PUCCH including second UCI to be transmitted via a cell managed by a second BS, wherein the second BS is different from the first BS, and a radio resource control (RRC) function associated with the UE is managed and performed by the first BS only; and when the UE reaches a maximum power limit due to overlap of the first PUCCH and the second PUCCH, reducing the transmission power of at least the first PUCCH or the second PUCCH as follows; if the first UCI and the second UCI have different protection priorities, primarily reducing the transmission power of one of the first and second PUCCHs including UCI of a lower protection priority, and if the first UCI and the second UCI have a same protection priority, primarily reducing the transmission power of the second PUCCH. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A user equipment (UE) configured to manage a transmission power for control information in a wireless communication system, the UE comprising:
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a radio frequency (RF) unit; and a processor, wherein the processor is configured to; determine a transmission power of a first physical uplink control channel (PUCCH) including first uplink control information (UCI) to be transmitted via a cell managed by a first base station (BS); determine a transmission power of a second PUCCH including second UCI to be transmitted via a cell managed by a second BS, wherein the second BS is different from the first BS, and a radio resource control (RRC) function associated with the UE is managed and performed by the first BS only; and when the UE reaches a maximum power limit due to overlap of the first PUCCH and the second PUCCH, reducing the transmission power of at least the first PUCCH or the second PUCCH as follows; if the first UCI and the second UCI have different protection priorities, primarily reducing the transmission power of one of the first and second PUCCHs including UCI of a lower protection priority, and if the first UCI and the second UCI have a same protection priority, primarily reducing the transmission power of the second PUCCH. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification