Terminal, base station, and communication method
View Patent ↗The present invention improves transmission efficiency in wireless communication. In the present invention, a terminal comprises a reception circuit for receiving control information for adjusting an uplink transmission frequency, and a control circuit for controlling the transmission frequency on the basis of the control information.
1 . A terminal, comprising:
reception circuitry, which, in operation, receives control information for adjusting a transmission frequency of transmission in an uplink; and
control circuitry, which, in operation, performs a control on the transmission frequency based on the control information, wherein,
the control information is different between a first-type terminal and a second-type terminal, the first type-terminal being a terminal that supports Global Navigation Satellite System (GNSS) functionality, and the second type-terminal being a terminal that does not support GNSS functionality,
the control information includes first information common to a plurality of terminals and second information specific to each of the plurality of terminals,
the first-type terminal performs the control based on the first information, and
the second-type terminal performs the control based on the first information and the second information.
2 . The terminal according to claim 1 , wherein
the control circuitry performs the control on a frequency obtained based on a downlink signal.
3 . The terminal according to claim 1 , wherein
the control circuitry performs the control on a frequency obtained from an external device different from a base station.
4 . The terminal according to claim 1 , wherein
in the second-type terminal,
the control circuitry determines a transmission frequency of a random access signal based on the first information, and determines a transmission frequency of transmission performed after transmission of the random access signal, based on the first information and the second information.
5 . The terminal according to claim 4 , wherein
a transmission resource of the random access signal is different between the first-type terminal and the second-type terminal.
6 . The terminal according to claim 1 , wherein
the uplink is a link between the terminal and a satellite or a link via the satellite.
7 . A base station, comprising:
transmission circuitry, which, in operation, transmits control information for adjusting a transmission frequency of transmission in an uplink; and
reception circuitry, which, in operation, receives an uplink signal at the transmission frequency determined by a control based on the control information, wherein,
the control information is different between a first-type terminal and a second-type terminal, the first type-terminal being a terminal that supports Global Navigation Satellite System (GNSS) functionality, and the second type-terminal being a terminal that does not support GNSS functionality,
the control information includes first information common to a plurality of terminals and second information specific to each of the plurality of terminals,
the first-type terminal performs the control based on the first information, and
the second-type terminal performs the control based on the first information and the second information.
8 . A communication method, comprising steps performed by a terminal of:
receiving control information for adjusting a transmission frequency of transmission in an uplink; and
performing a control on the transmission frequency based on the control information, wherein,
the control information is different between a first-type terminal and a second-type terminal, the first type-terminal being a terminal that supports Global Navigation Satellite System (GNSS) functionality, and the second type-terminal being a terminal that does not support GNSS functionality,
the control information includes first information common to a plurality of terminals and second information specific to each of the plurality of terminals,
the first-type terminal performs the control based on the first information, and
the second-type terminal performs the control based on the first information and the second information.
9 . A communication method, comprising steps performed by a base station of:
transmitting control information for adjusting a transmission frequency of transmission in an uplink; and
receiving an uplink signal at the transmission frequency determined by control based on the control information, wherein,
the control information is different between a first-type terminal and a second-type terminal, the first type-terminal being a terminal that supports Global Navigation Satellite System (GNSS) functionality, and the second type-terminal being a terminal that does not support GNSS functionality,
the control information includes first information common to a plurality of terminals and second information specific to each of the plurality of terminals,
the first-type terminal performs the control based on the first information, and
the second-type terminal performs the control based on the first information and the second information.