Lg Electronics Inc.

Blackberry Corporation

Lg Elecronics Inc.

Yun Jung Yi

Joon Kui Ahn

Dong Youn Seo

Suck Chel Yang

Bong Hoe Kim

Eun Sun Kim

Han Byul Seo

Seung Min Lee

Jong Hyun Park

Ill Soo Sohn

Provided are a method for a terminal transmitting uplink control information (UCI) through a physical uplink control channel (PUCCH) in a wireless communication system, and a terminal using the method. A transmission power to be applied to the uplink control channel is determined on the basis of a value subordinate to a PUCCH format, and at least one type of UCI is transmitted from the physical uplink control channel by using the transmission power that is determined, wherein when the PUCCH format is PUCCH format 3, and the at least one type of UCI includes acknowledgement/negative-acknowledgement (ACK/NACK) and periodic channel state information (CSI), the value subordinate to the PUCCH format is determined on the basis of the number of bits of the ACK/NACK and the number of bits of the periodic CSI.

Method and apparatus for transmitting uplink control information in wireless communication system

Provided are a method for a terminal transmitting uplink control information (UCI)through a physical uplink control channel (PUCCH) in a wireless communication system, and a terminal using the method. A transmission power to be applied to the uplink control channel is determined on the basis of a value subordinate to a PUCCH format, and at least one type of UCI is transmitted from the physical uplink control channel by using the transmission power that is determined, wherein when the PUCCH format is PUCCH format, and the at least one type of UCI includes acknowledgement/negative-acknowledgement(ACK/NACK) and periodic channel state information (CSI), the value subordinate to the PUCCH format is determined on the basis of the number of bits of the ACK/NACK and the number of bits of the periodic CSI.

Provided are a method and an apparatus for transmitting uplink control information performed by a user equipment in a wireless communication system. The method comprises the steps of: receiving a first parameter for indicating whether to simultaneously transmit a first combination of an acknowledgement/negative-acknowledgement (ACK/NACK) and a channel quality indicator (CQI), and a second parameter for indicating whether to multiplex a second combination of an ACK/NACK and the CQI and transmitting same as a second physical uplink control channel (PUCCH) format; and multiplexing the first combination of the ACK/NACK or the second combination of ACK/NACK with the CQI and transmitting same as a first PUCCH format or the second PUCCH format, based on the first parameter and the second parameter.

A method and user equipment for performing an uplink transmission in a wireless communication system, are discussed. The method includes allocating transmission power to a first uplink transmission and a second uplink transmission when a total power in a transmission period including at least one or more OFDM symbols exceeds maximum power, wherein each of the first and second uplink transmissions is one of physical uplink shared channel (PUSCH) transmission, physical uplink control channel (PUCCH) transmission, physical random access channel (PRACH) transmission and sounding reference signal (SRS) transmission; and performing the first and second uplink transmissions according to the allocated transmission power, wherein the allocation of the transmission power is performed according to priority information.

Method for transmitting uplink and wireless device using same

A method for uplink transmission in a wireless communication system, the method includes determining, by a user equipment (UE), whether the first uplink signal to be transmitted toward a first cell belonging to a first timing advance group (TAG) at an nsubframe overlaps the second uplink signal to be transmitted toward a second cell belonging to a second TAG at an (n+1)subframe; dropping, by the UE, the first uplink signal at the nsubframe, if a total transmission power including the first and second uplink signals exceeds a maximum transmit power, where n is an integer&#x2265;1; and transmitting the second uplink signal without the first uplink signal which is dropped.

Method for controlling uplink transmission power and wireless device using same

A method for uplink transmission in a wireless communication system. A user equipment (UE) determines whether to transmit or drop a sounding reference signal (SRS) on a last symbol in a isubframe. The SRS is dropped if multiple timing advance groups (TAGs) are configured, if a portion of the last symbol of the isubframe for transmitting the SRS toward a first serving cell in a first TAG is overlapped with an (i+1)subframe for transmitting an uplink channel toward a second serving cell in a second TAG and if a total power of the SRS and the uplink channel exceeds a maximum value on the overlapped portion of the last symbol.

Provided are a method for a terminal transmitting uplink control information (UCI) through a physical uplink control channel (PUCCH) in a wireless communication system, and a terminal using the method. A transmission power to be applied to the uplink control channel is determined on the basis of a value subordinate to a PUCCH format, and at least one type of UCI is transmitted from the physical uplink control channel by using the transmission power that is determined, wherein when the PUCCH format is PUCCH format 3, and the at least one type of UCI includes acknowledgement/negative-acknowledgement(ACK/NACK) and periodic channel state information (CSI), the value subordinate to the PUCCH format is determined on the basis of the number of bits of the ACK/NACK and the number of bits of the periodic CSI.

A method is provided for uplink transmission in a wireless communication system. A user equipment (UE) determines whether to transmit both a physical uplink shared channel (PUSCH) and a sounding reference signal (SRS), or drop the SRS and transmit only the PUSCH but dropping the SRS when the UE determines satisfaction of all of at least three conditions including: a first condition specifying that a plurality of timing advance groups (TAGs) including a first TAG and a second TAG are configured, a second condition specifying that at least one symbol of a subframe n which is used to transmit the SRS toward a first cell belonging to the first TAG is overlapped with a subframe n+1 on which the PUSCH is transmitted toward a second cell belonging to the second TAG and a third condition specifying that a total uplink transmission power exceeds a maximum value.

Method and apparatus for transmitting uplink

A user equipment (UE) is provided for transmitting an uplink signal in a wireless communication system The UE sets up a sounding reference signal (SRS) configuration for a first serving cell that includes information for an SRS transmission, and determines an SRS subframe in which an SRS and a physical uplink shared channel (PUSCH) for the first serving cell are simultaneously triggered according to the SRS configuration. If a SRS transmission on the SRS subframe for the first serving cell is overlapped with an uplink transmission for a second serving cell, the UE transmits the SRS in the SRS subframe if a total uplink transmission power does not exceeds the UE's maximum transmit power on the overlapped portion. If the SRS is triggered by the SRS configuration and timing advance groups are configured to the UE, the UE transmits the PUSCH on the SRS subframe for the first serving cell.

Growing community of inventors

Anyang-si, South Korea

Yun Jung Yi