A method and system to help prevent legacy devices that do not support a service feature such as uplink-downlink subcarrier shifting from connecting with an access node on a carrier where the service feature should be applied. An example method involves use of Network Signaling (NS) values that are used for spectral emission control. Per the disclosure, the access node could broadcast an NS value that legacy device are not configured to understand but that newer devices are configured to understand as relating to both spectral emission limitation and also the service feature at issue. Responsive to the broadcast of that NS value, the legacy devices will therefore not connect with the access node, while the newer devices may connect with the access node and apply the service feature.

The disclosed method and an apparatus are directed to determine an uplink transmission power in New Radio (NR) systems by a wireless transmit/receive unit (WTRU) for transmitting at least one physical uplink shared channel (PUSCH), using multiple beams toward multiple Tx/Rx points (TRPs). The method includes determining common parameters that are common to the multiple beams. The method also includes determining beam-specific parameters like a configurable fractional power compensation factor for each beam, and a configurable maximum transmit power level for each beam, which are determined dynamically or semi-statically based on deployment, WTRU mobility, or interference level. The method further includes transmitting at least one codeword using at least one of the multiple beams, each of the multiple beams having a transmission power calculated based on the common parameters and the beam-specific parameters.

Various aspects to improve a sidelink communication by UEs in a presence of a reconfigurable intelligent surface (RIS) are provided. In an aspect, the UE may determine RIS location information for a RIS device controlled by a base station, configure one or more sidelink communication parameters based on the RIS location information, and perform a sidelink communication with a second UE based on the one or more sidelink communication parameters. In an aspect, the UE may receive, from a base station, a RIS configuration setting indicating communication patterns of a RIS device controlled by the base station, the communication patterns being respectively associated with pattern durations, select a pattern duration of the pattern durations, and perform a sidelink communication with a second UE during the selected pattern duration of the pattern durations that is associated with a respective communication pattern of the communication patterns.

A device including one or more processors configured to: determine a disconnection margin value based on: a current transmission operation state including one or more transmission control parameters, and a current transmission rate; receive a power back-off (PBO) request including a PBO value; perform a comparison of the PBO value to the disconnection margin value; and determine whether to apply a PBO according to the PBO request based on the comparison.

A method and apparatus are disclosed herein for controlling transmit power in a station (STA) of a wireless local area network (WLAN). A STA may transmit, to another STA, transmit power step size information that indicates a maximum transmission power for an operational bandwidth that the STA supports. The STA may receive, from another STA, a signal in one of the plurality of operational bandwidths that the STA supports. The received signal may include a transmission power based on the transmitted adjustment step size setting.

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.

Apparatuses and methods for transmission power control are disclosed. A given transmission resource and a first transmission power are determined (202, 204) for transmission. Prior to transmitting on the given transmission resource it is determined (206) whether the resource is occupied or unoccupied. Upon detecting that the resource is occupied, a second, reduced transmission power is determined (210) such that a transmission using the second, reduced transmission power would not render the resource as occupied. The determination of the second transmission power is based at least partially on a predetermined maximum transmission power reduction value. Transmission (212) is done utilising the given transmission resource using the second transmission power according to the determination.

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.

An unlicensed carrier power control method is provided. Multiple transmitted power constraint parameters are acquired, and a minimum value in the multiple transmitted power constraint parameters is determined. Power control is performed according to the minimum value in the multiple transmitted power constraint parameters. An unlicensed carrier power control device and a storage medium are also provided.