The present disclosure provides a power control method in device to device (D2D) communication and a user equipment for performing the power control method. The method includes computing a power value of device to device (D2D) transmission of a user equipment performing D2D communication in a subframe in a serving cell, based on a power control adjustment state of a Long Term Evolution (LTE) wide area network (WAN) uplink channel of the user equipment and an offset or a ratio indicated by a transmit power control (TPC) command indicated in D2D grant or downlink control information (DCI) format 3/3A.

Apparatuses, methods, and systems are disclosed for synchronization signal block reception and synchronization signal block transmission. One apparatus for synchronization signal block reception includes a receiver that receives multiple synchronization signal blocks. The multiple synchronization signal blocks have different power levels corresponding to at least two synchronization signal blocks of the multiple synchronization signal blocks.

Embodiments described herein relate generally to a communication between a user equipment (“UE”) and a plurality of evolved Node Bs (“eNBs”). A UE may be adapted to operate in a dual connected mode on respective wireless cells provided by first and second eNBs. The UE may be adapted to estimate respective power headroom (“PHR”) values associated with simultaneous operation on the first and second wireless cells. The UE may cause the first and second PHR estimates to be transmitted to both the first and second eNBs. The first and second eNBs may use these estimates to compute respective uplink transmission powers for the UE. Other embodiments may be described and/or claimed.

Methods and systems for detecting and mitigating the effects of time of flight interference of a radio frequency (RF) signal are provided. A wireless communication network may determine, based on one or more parameters being sufficiently different than a baseline value, that time of flight interference is occurring based on the undesirable propagation of a first cell's downlink signals into a second cell's coverage area. In response to the determination, the network may identify an offending base station and modify the RF transmission characteristics of the offending base station to prevent or mitigate the impact of the interference event on the RF signal's propagation.

Systems and methods are disclosed for adjusting transmit power in a wireless network. In one embodiment, a method is disclosed that includes identifying a selected base station with a first coverage area for adjustment of transmit power; identifying a plurality of neighboring base stations with coverage areas nearby the first coverage area; retrieving a plurality of signal strength measurements from a plurality of mobile devices within the coverage areas of the plurality of neighboring base stations; determining, based on the plurality of measurements, an effect on the plurality of mobile devices within the coverage areas of the plurality of neighboring base stations; and sending an instruction for adjustment of transmit power to the selected base station.

Disclosed are systems and techniques for performing sidelink communications. For instance, a first client device can determine a first transmit power parameter for transmitting sidelink communications. The first transmit power parameter can either be received from a base station associated with the first client device or it can be a default parameter based on the first client device not being associated with a base station. The first client device can transmit, to a second client device, a first sidelink transmission having a first power level corresponding to the first transmit power parameter. The first client device can receive, from the second client device, a first sidelink reception having a second power level corresponding to a second transmit power parameter.

A scheduling apparatus and method are disclosed. An embodiment of the invention provides a scheduling apparatus that includes: a scheduling group classification unit that classifies user terminals located within a serving cell of a base station into a multiple number of scheduling groups by using large-scale fading information of the user terminals; a transmission power setting unit that sets the transmission power of the user terminals for each of the classified scheduling groups; a scheduling period setting unit that sets the scheduling period for each of the scheduling groups by determining a resource element usage proportion for each of the scheduling groups based on the data rate of each of the scheduling groups and determining the data rate expected for all user terminals; and a resource element allocation unit that allocates resource elements used for each of the scheduling groups according to each of the determined scheduling periods.

A wire device receives: configuration parameters of: a primary cell with a primary physical uplink control channel (PUCCH); and a secondary cell with a secondary PUCCH; a transmit power control (TPC) radio network temporary identifier (RNTI); a primary TPC index of the primary PUCCH; and a secondary TPC index of the secondary PUCCH. The wireless device receives a downlink control information (DCI) associated with the TPC RNTI. The secondary TPC index identifies a TPC command in an array of TPC commands in the DCI. The wireless device adjusts a transmission power of the secondary PUCCH based on the TPC command.

Provided are a method for performing sidelink transmission by a transmission terminal in a wireless communication system, and a device supporting same. The method can comprise the steps of: adjusting a parameter associated with sidelink transmission on the basis of the height of an antenna of a transmission terminal; and performing sidelink transmission for a reception terminal on the basis of the adjusted parameter.

A transmission point (TP) comprises a processor configured to generate a transmission parameter related to a transmission property of the TP, wherein the transmission parameter comprises at least one of a transmission rank, a beamforming matrix, a transmission power, and an on/off status, and a transmitter coupled to the processor and configured to transmit the transmission parameter as part of a coordinated multi-point (CoMP) scheme. A transmission point (TP) comprises a processor configured to generate a transmission parameter related to a desired transmission property, wherein the transmission parameter comprises at least one of a transmission rank, a beamforming matrix, a transmission power, and an on/off status, and a transmitter coupled to the processor and configured to transmit the transmission parameter as part of a coordinated multi-point (CoMP) scheme.