Apparatuses, methods, and systems are disclosed for transmission power for dual connectivity. One method includes operating a UE with DC comprising connectivity with a first cell group and a second cell group; receiving a configuration message configuring the UE with a first maximum transmission power for transmissions on the first cell group, and a second maximum transmission power for transmissions on the second cell group; determining, at a UE, a transmission time for a first transmission on a first serving cell of the first cell group; and determining a cut-off time for power determination for the first transmission, wherein the cut-off time is based on the transmission time for the first transmission offset by an offset time, and the offset time is based on a function of a first UE processing time and a second UE processing time.

A method for receiving downlink data by the terminal in a wireless communication system, includes receiving, from a base station, downlink control information for scheduling a short physical downlink shared channel (sPDSCH) on a short physical downlink control channel (sPDCCH), and receiving, from the base station, downlink data on the sPDSCH based on the downlink control information. Here, the sPDCCH and the sPDSCH are based on a first transmission time interval (TTI)-based radio frame structure, wherein the first TTI-based radio frame structure is shorter in time than a second TTI-based radio frame structure related to (i) a physical downlink shared channel (PDSCH) and (ii) a physical downlink control channel (PDCCH). Further, a number of resource element groups (REGs) consisting of a control channel element (CCE) related to the sPDCCH is smaller than a number of resource element groups (REGs) composed of a CCE related to the PDCCH.

A method for receiving downlink data by the terminal in a wireless communication system, includes receiving, from a base station, downlink control information for scheduling a short physical downlink shared channel (sPDSCH) on a short physical downlink control channel (sPDCCH), and receiving, from the base station, downlink data on the sPDSCH based on the downlink control information. Here, the sPDCCH and the sPDSCH are based on a first transmission time interval (TTI)-based radio frame structure, wherein the first TTI-based radio frame structure is shorter in time than a second TTI-based radio frame structure related to (i) a physical downlink shared channel (PDSCH) and (ii) a physical downlink control channel (PDCCH). Further, a number of resource element groups (REGs) consisting of a control channel element (CCE) related to the sPDCCH is smaller than a number of resource element groups (REGs) composed of a CCE related to the PDCCH.

The described technology is generally directed towards reallocating power to devices in a group, such as a rack of servers in a datacenter, when no power headroom remains available. Respective devices, which are classified into respective classes corresponding to respective priority device class levels, have power distributed thereto. Upon determining that available power headroom for power capacity distribution among the group of devices has reached an available power capacity distribution lower limit (e.g., zero), reallocation is performed by increasing power capacity allocated to a first device of a higher priority level class, and decreasing power capacity allocated to a second device of a lower priority level class. For more classes, such as high, medium and low, the power can be decreased among the lower priority level classes by a defined ratio, e.g., two-to-one between the medium and low priority classes.

An electronic device including a first communication circuit supporting a first radio access technology (RAT), a first processor operatively connected with the first communication circuit, a second communication circuit supporting a second RAT, and a second processor electrically connected with the first processor and the second communication circuit is provided. The second processor provides first data to the first processor, obtains first information indicating a first frequency band from the first processor, and transmits the first information to the second communication circuit to control an upper limit of transmission power of a second signal through a second frequency band into a magnitude associated with the first frequency band.

An electronic device including a first communication circuit supporting a first radio access technology (RAT), a first processor operatively connected with the first communication circuit, a second communication circuit supporting a second RAT, and a second processor electrically connected with the first processor and the second communication circuit is provided. The second processor provides first data to the first processor, obtains first information indicating a first frequency band from the first processor, and transmits the first information to the second communication circuit to control an upper limit of transmission power of a second signal through a second frequency band into a magnitude associated with the first frequency band.

Methods, systems, and devices for channel access and listen-before-talk approaches for new radio operation in unlicensed bands and/or licensed bands. A gNB and a wireless transmit/receive unit (WTRU) may operate in unlicensed spectrum. The gNB may perform listen-before-talk operation, and when successful, may send a downlink control channel with a slot format indication (SFI) to the WTRU. There may also be a handshaking procedure with an exchange of a request to transmit (RTT) and a request to receive (RTR). Prior to receiving the downlink channel, the WTRU may monitor search spaces at a first level, and once the downlink channel is received the WTRU may monitor search spaces at a second level. At the end of transmission, the WTRU may revert back to monitoring search spaces at the first level. In one example, the first level may be a mini-slot level and the second level may be a slot level.

Methods, systems, and devices for channel access and listen-before-talk approaches for new radio operation in unlicensed bands and/or licensed bands. A gNB and a wireless transmit/receive unit (WTRU) may operate in unlicensed spectrum. The gNB may perform listen-before-talk operation, and when successful, may send a downlink control channel with a slot format indication (SFI) to the WTRU. There may also be a handshaking procedure with an exchange of a request to transmit (RTT) and a request to receive (RTR). Prior to receiving the downlink channel, the WTRU may monitor search spaces at a first level, and once the downlink channel is received the WTRU may monitor search spaces at a second level. At the end of transmission, the WTRU may revert back to monitoring search spaces at the first level. In one example, the first level may be a mini-slot level and the second level may be a slot level.

A method and an apparatus for controlling uplink power in a wireless communication system are provided. The method for controlling uplink power of a User Equipment (UE) forming a transmission link with a plurality of BSs (BSs), a power headroom report trigger event by at least one of the plurality of BSs is detected. Power headroom information of the UE is reported to at least one of the plurality of BSs.

A method and an apparatus for controlling uplink power in a wireless communication system are provided. The method for controlling uplink power of a User Equipment (UE) forming a transmission link with a plurality of BSs (BSs), a power headroom report trigger event by at least one of the plurality of BSs is detected. Power headroom information of the UE is reported to at least one of the plurality of BSs.