Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a device, such as a user equipment (UE), may report power headroom measurements. To support accurate and reliable power headroom reports (PHRs), the UE may receive a first downlink control information (DCI) transmission for a first cell and determine whether a second DCI transmission for a second cell is received. The UE may generate the PHR based on whether a second DCI transmission was received after the first DCI transmission and may transmit the PHR including power headroom values for both cells. The UE may determine whether to perform an actual or virtual power headroom calculation for the second cell based on when the second DCI was received. Additionally or alternatively, the UE may determine whether to drop resources scheduled by the first or second DCI and may transmit the PHR in the remaining resources.

A primary wireless access node wirelessly transmits reference signals at an initial reference signal power level. The primary wireless access node exchanges data with User Equipment (UEs) and exchanges the data with other network elements. The primary wireless access node exchanges signaling with secondary wireless access nodes. The secondary wireless access nodes exchange data between the UEs and the network elements responsive to the signaling. The primary wireless access node determines the amount of the secondary nodes and determines a new reference signal power level based on the amount of the secondary nodes. The primary wireless access node wirelessly transmits subsequent reference signals at the new reference power level.

Provided is a method performed by a user equipment (UE) in a wireless communication system, including: receiving, from a base station, configuration information regarding a plurality of search spaces for a physical downlink control channel (PDCCH) repetition; monitoring a plurality of PDCCHs on at least one cell based on the configuration information; identifying a time at which a repetition of PDCCHs including a first downlink control information (DCI) format, from among the plurality of PDCCHs, ends; determining at least one power headroom report (PHR) for the plurality of PDCCHs, based on an actual transmission or a reference format configured from higher layer signaling according to the identified time; and transmitting the determined at least one PHR on a physical uplink shared channel (PUSCH) scheduled by the first DCI format.

The present disclosure relates to a communication scheme and system for converging a 5.sup.th generation (5G) communication system for supporting a data rate higher than that of a 4.sup.th generation (4G) system with an internet of things (IoT) technology. The present disclosure is applicable to intelligent services (e.g., smart home, smart building, smart city, smart car, connected car, health care, digital education, retail, and security and safety-related services) based on the 5G communication technology and the IoT-related technology. The present disclosure provides a method for preventing a legacy terminal from camping on an enhanced LTE (eLTE) base station that is connected to only a next generation (NG) core by combining a legacy information element (IE) and a new IE carried in system information broadcast by the base station in a next generation mobile communication system.

A wireless device, receives configuration parameters of: a first resource for a first channel, of a carrier, for transmitting first feedback; and a second resource for a second channel of the carrier for transmitting second feedback. The first resource and the second resource overlap in one or more symbol durations. Power levels are determined comprising: a first power level for transmission of the first feedback via the first resource; and a second power level for transmission of the second feedback via the second resource. In response to a sum of the power levels being larger than an allowed transmission power, a configured transmission of the first feedback via the first resource is dropped. The dropping is based on a first priority of the first channel. The second feedback is transmitted via the second resource.

Apparatuses, methods, and systems are disclosed for efficient management of multiple active BWPs. One apparatus includes a processor and a transceiver that communicates with a serving cell using multiple active bandwidth parts (“BWPs”) for the serving cell. Here, the serving cell is configured with multiple configured grants, each active BWP configured with one of the multiple configured grants. The processor receives an indication from a base unit of which configured grants are to be used upon a change to the multiple active BWPs and selectively activates a configured grant in response to a change to the multiple active BWPs.

The present embodiments may provide a technique of transmitting, by a terminal, channel state information with regard to one or more beams to a base station. The present embodiments provide a method and an apparatus for transmitting, by a terminal, channel state information with regard to one or more beams, the method comprising the steps of: receiving CSI reporting configuration information from a base station; determining whether or not group-based beams are to be reported on the basis of the CSI reporting configuration information; measuring RSRP with regard to CSI-RS received through one or more CSI-RS resources; and transmitting, to the base station, channel state information including values on a predetermined table on the basis of the group-based beam reporting and the CSI-RS RSRP measurement results.

A Power Headroom Report (PHR) reporting method, a PHR receiving method, a terminal, and a network device are provided. The method includes: reporting a PHR in a case that a preset reporting trigger condition is satisfied. The PHR includes a Power Headroom (PH) of a network node. The network node includes a neighboring network node, or a local network node and a neighboring network node.

Methods, systems, and devices for wireless communications are described. The method, system, or devices for wireless communications may implement receiving a grant for a first transmission scheduled for a first set of resources, the first transmission associated with a first transmission parameter; receiving an indication to cancel the first transmission; dropping the first transmission based on receiving the indication; determining a second transmission parameter for a second transmission based on the first transmission parameter and irrespective of dropping the first transmission; and performing or receiving the second transmission according to the second transmission parameter. Alternatively, a device may receive an indication to cancel the second transmission; drop the second transmission based on receiving the indication; and refraining from rescheduling the first transmission on the first set of resources based on receiving the indication and irrespective of dropping the second transmission.

Certain aspects of the present disclosure provide techniques for selecting an uplink (UL) transmit beam by a user equipment (UE). A UE may receive, from a base station (BS), one or more beamformed downlink signals using one or more receive beams. The UE may select an uplink transmit beam based, at least in part, on the one or more beamformed downlink signals. The UE may transmit an uplink signal using the selected uplink transmit beam.