The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure relates to mobile communication technology, and in particular, to a method for uplink transmission and apparatus thereof.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) scheduling transmission of a first one or more physical uplink control channel (PUCCH) communications on a first component carrier and a second one or more PUCCH communications on a second component carrier, wherein the DCI includes information identifying a first transmit power configuration for the first one or more PUCCH communications and a second transmit power configuration for the second one or more PUCCH communications. The UE may transmit the first one or more PUCCH communications in accordance with the first transmit power configuration and the second one or more PUCCH communications in accordance with the second transmit power configuration. Numerous other aspects are described.

A method and apparatus for handling a control channel for carrier aggregation in wireless communications. The method includes determining which component carrier to listen to, detecting the downlink control channel, processing mapping information related to downlink and uplink transmissions and operating discontinuous reception with respect to carrier aggregation. The method also includes detecting a component carrier, determining the component carrier type and locating the anchor component carrier, if necessary, where the anchor component carrier carries the carrier aggregation information.

The invention relates to methods for informing an eNodeB on the transmit power status of a user equipment in a mobile communication system using component carrier (CC) aggregation. Furthermore, the invention is also related to the implementation of these methods by hardware and their implementation in software. The invention proposes procedures that allow the eNodeB to recognize the power usage status of a UE in a communication system using carrier aggregation. The UE indicates to the eNodeB, when the UE is close to using its total maximum UE transmit power or when it has exceeded same. This is achieved by the UE including indicator(s) and/or new MAC CEs to one or more protocol data units transmitted on respective component carriers within a single sub-frame that is providing the eNodeB with power status information. The MAC CEs may report a per-UE power headroom. Alternatively, the MAC CEs may report per-CC power headrooms and/or power reductions applied to the respective uplink CCs.

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.

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.

Techniques for wireless component monitoring are described herein. The techniques may include entering a low power mode to associate a radio frequency identification (RFID) component with a patient monitoring device within a first range. The techniques also include entering a high power mode wherein the patient monitoring device is to detect the RFID component within a second range of the patient monitoring device, wherein the second range is larger than the first range.

Techniques for wireless component monitoring are described herein. The techniques may include entering a low power mode to associate a radio frequency identification (RFID) component with a patient monitoring device within a first range. The techniques also include entering a high power mode wherein the patient monitoring device is to detect the RFID component within a second range of the patient monitoring device, wherein the second range is larger than the first range.

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing power scaling for PUCCH transmission at power limitation situation in a carrier aggregation system, the method comprising: configuring multiple Physical Uplink Control Channels (PUCCHs) for the UE; performing power scaling down for at least one first PUCCHs of the multiple PUCCHs if the UE does not have enough power to transmit multiple PUCCHs at the same time; transmitting the at least one first PUCCHs using a power determined by the power scaling down; and transmitting second PUCCHs except the at least one first PUCCHs which the power scaling down is performed, without any power scaling down.

A method and apparatus for performing a device-to-device (D2D) operation in a wireless communication system is provided. In one embodiment, a user equipment (UE) receives a configuration of a reference timing for a cell of first carrier, based on a timing of a primary cell (PCell) of a second carrier, and performs D2D operation with another UE on the cell of the first carrier according to the reference timing. In another embodiment, a UE allocates a D2D transmission power based on an uplink (UL) transmission power for dual connectivity, and performs D2D operation with another UE according to the D2D transmission power.