Method and apparatus for transmitting uplink signals in wireless communication system
First Claim
1. A method for transmitting physical random access preamble channels (PRACHs) by a user equipment (UE) to in a wireless communication system, the method comprising:
- transmitting a first PRACH for a first cell group; and
transmitting a second PRACH for a second cell group such that the first PRACH and the second PRACH overlap in time,wherein the first PRACH is transmitted at a first PRACH power and the second PRACH is transmitted at a second PRACH power, the second PRACH power being a reduced second PRACH power level so that a sum of the first PRACH power and the second PRACH power does not exceed a total PRACH power limit, andwherein the first cell group comprises a primary cell (PCell), and the second cell group comprises at least one secondary cell (SCell).
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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 the wireless communication system, comprising the steps of: configuring an uplink subframe (UL SF) of a first set and a UL SF of a second set; receiving a downlink control information (DCI) format including a bitmap for indicating transmit power control (TPC) for a plurality of terminals; and controlling transmit power of an uplink channel by using TPC information on the terminals from the bitmap, wherein the TPC information is used for controlling transmit power of an uplink channel transmitted from the UL SF of the first set when the DCI format comprises a first identifier, and the TPC information is used for controlling transmit power of an uplink channel transmitted from the UL SF of the second set when the DCI format comprises a second identifier.
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Citations
18 Claims
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1. A method for transmitting physical random access preamble channels (PRACHs) by a user equipment (UE) to in a wireless communication system, the method comprising:
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transmitting a first PRACH for a first cell group; and transmitting a second PRACH for a second cell group such that the first PRACH and the second PRACH overlap in time, wherein the first PRACH is transmitted at a first PRACH power and the second PRACH is transmitted at a second PRACH power, the second PRACH power being a reduced second PRACH power level so that a sum of the first PRACH power and the second PRACH power does not exceed a total PRACH power limit, and wherein the first cell group comprises a primary cell (PCell), and the second cell group comprises at least one secondary cell (SCell). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A device for transmitting physical random access preamble channels (PRACHs) by a user equipment (UE) to in a wireless communication system, the device comprising:
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a transmitter; and a processor for controlling the transmitting to; transmit a first PRACH for a first cell group; and transmit a second PRACH for a second cell group such that the first PRACH and the second PRACH overlap in time, wherein the first PRACH is transmitted at a first PRACH power and the second PRACH is transmitted at a second PRACH power, the second PRACH power being a reduced second PRACH power level so that a sum of the first PRACH power and the second PRACH power does not exceed a total PRACH power limit, and wherein the first cell group comprises a primary cell (PCell), and the second cell group comprises at least one secondary cell (SCell).
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Specification