Further, the base station 10 and the user terminal 20 may include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and some or all of the functional blocks may be implemented using the hardware. For example, the processor 1001 may be implemented with at least one of these pieces of hardware.
Note that terms described in the present disclosure and terms necessary for understanding the present disclosure may be replaced with other terms that have the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be read interchangeably. Further, the signal may be a message. A reference signal can be abbreviated as an “RS”, and may be referred to as a “pilot”, a “pilot signal”, and the like, depending on which standard applies. Further, a “component carrier (CC)” may be referred to as a “cell”, a “frequency carrier”, a “carrier frequency”, and the like.
A radio frame may include one or a plurality of durations (frames) in the time domain. Each of the one or plurality of periods (frames) constituting the radio frame may be referred to as a “subframe”. Furthermore, a subframe may include one or a plurality of slots in the time domain. A subframe may be a fixed time duration (e.g., 1 ms) that is not dependent on numerology.