User terminal
A user terminal according to one aspect of the present disclosure includes: a receiving section that receives measurement signals of a first cell and a second cell; and a control section that, when at least one of handover, cell re-selection and a cell addition procedure is performed based on a measurement result that uses the measurement signals, determines whether or not to assume that timings of radio frames and numbers assigned to the radio frames match between the first cell and the second cell.
1. A terminal comprising:
a receiver that receives information from a base station; and
a processor that, for cells of a same frequency in a time division duplex (TDD) frequency band, determines system frame number alignment and frame timing alignment across the cells of the same frequency in the TDD frequency band and, for cells of a same frequency in a frequency division duplex (FDD) frequency band, when the information is set to true by the base station, determines system frame number alignment and frame timing alignment across the cells of the same frequency in the FDD frequency band,
wherein the frame timing alignment comprises half-frame timing alignment, and
wherein the information indicates that a synchronization signal block index can be derived.
2. The terminal according to claim 1 , wherein the receiver receives the information in measurement notification.
3. The terminal according to claim 1 , wherein the receiver receives the information in cell re-selection notification.
4. The terminal according to claim 1 , wherein the receiver receives the information in handover notification.
5. A radio communication method for a terminal, comprising:
receiving information from a base station; and
for cells of a same frequency in a time division duplex (TDD) frequency band, determining system frame number alignment and frame timing alignment across the cells of the same frequency in the TDD frequency band and, for cells of a same frequency in a frequency division duplex (FDD) frequency band, when the information is set to true by the base station, determining system frame number alignment and frame timing alignment across the cells of the same frequency in the FDD frequency band,
wherein the frame timing alignment comprises half-frame timing alignment, and
wherein the information indicates that a synchronization signal block index can be derived.
6. The terminal according to claim 1 , wherein the receiver receives the information by using Radio Resource Control (RRC) signaling.
7. A system comprising:
a base station; and
a terminal,
wherein the base station comprises:
a transmitter that transmits information; and
wherein the terminal comprises:
a receiver that receives the information from the base station; and
a processor that, for cells of a same frequency in a time division duplex (TDD) frequency band, determines system frame number alignment and frame timing alignment across the cells of the same frequency in the TDD frequency band and, for cells of a same frequency in a frequency division duplex (FDD) frequency band, when the information is set to true by the base station, determines system frame number alignment and frame timing alignment across the cells of the same frequency in the FDD frequency band,
wherein the frame timing alignment comprises half-timing alignment, and
wherein the information indicates that a synchronization signal block index can be derived.