Communication apparatus, base station apparatus, method, and recording medium

A base station apparatus that communicates with a first communication apparatus, the base station apparatus comprising:

• setting circuitry that transmits setting information regarding grant-free transmission available resources to the first communication apparatus;
• and
• communication processing circuitry that transmits, in a predetermined first slot, a downlink control channel including slot format information, the slot format information implicitly indicating dynamically switched parameter information for a grant-free transmission and that receives first uplink data, the first uplink data being generated by the first communication apparatus based on the dynamically switched parameter information, the first uplink data transmitted from the first communication apparatus using uplink resources selected from the grant-free transmission available resources,
• wherein the slot format information comprises:
• first slot format information implicitly indicating first parameter information corresponding to when the first uplink data does not interfere with second uplink data of a grant based transmission, and
• second slot format information implicitly indicating second parameter information corresponding to when the first uplink data does interfere with the second uplink data of the grant based transmission.

A method executed by a communication apparatus that communicates with a base station apparatus, the method comprising:

• performing setting regarding grant-free transmission available resources based on setting information received from the base station apparatus;
• and
• receiving, in a predetermined first slot, a downlink control channel including slot format information, the slot format information implicitly indicating dynamically switched parameter information for a grant-free transmission and using uplink resources selected from the grant-free transmission available resources to transmit first uplink data, the first uplink data being generated based on the dynamically switched parameter information,
• wherein the slot format information comprises:
• first slot format information implicitly indicating first parameter information corresponding to when the first uplink data does not interfere with second uplink data of a grant based transmission, and
• second slot format information implicitly indicating second parameter information corresponding to when the first uplink data does interfere with the second uplink data of the grant based transmission.

A method executed by a base station apparatus that communicates with a first communication apparatus, the method comprising:

• transmitting setting information regarding grant-free transmission available resources to the first communication apparatus;
• and
• transmitting, in a predetermined first slot, a downlink control channel including slot format information, the slot format information implicitly indicating dynamically switched parameter information for a grant-free transmission and receiving first uplink data, the first uplink data being generated by the first communication apparatus based on the dynamically switched parameter information, the first uplink data transmitted from the first communication apparatus using uplink resources selected from the grant-free transmission available resources,
• wherein the slot format information comprises:
• first slot format information implicitly indicating first parameter information corresponding to when the first uplink data does not interfere with second uplink data of a grant based transmission, and
• second slot format information implicitly indicating second parameter information corresponding to when the first uplink data does interfere with the second uplink data of the grant based transmission.

A non-transitory recording medium recording a program for causing a computer to function as:

• a communication apparatus that communicates with a base station apparatus, the communication apparatus comprising
• setting circuitry that performs setting regarding grant-free transmission available resources based on setting information received from the base station apparatus, and
• communication processing circuitry that receives, in a predetermined first slot, a downlink control channel including slot format information, the slot format information implicitly indicating dynamically switched parameter information for a grant-free transmission and that uses uplink resources selected from the grant-free transmission available resources to transmit first uplink data, the first uplink data being generated based on the parameter information dynamically switched,
• wherein the slot format information comprises:
• first slot format information implicitly indicating first parameter information corresponding to when the first uplink data does not interfere with second uplink data of a grant based transmission, and
• second slot format information implicitly indicating second parameter information corresponding to when the first uplink data does interfere with the second uplink data of the grant based transmission.

A non-transitory recording medium recording a program for causing a computer to function as:

• a base station apparatus that communicates with a first communication apparatus, the base station apparatus comprising
• setting circuitry that transmits setting information regarding grant-free transmission available resources to the first communication apparatus, and
• communication processing circuitry that transmits, in a predetermined first slot, a downlink control channel including slot format information, the slot format information implicitly indicating dynamically switched parameter information for a grant-free transmission and that receives the first uplink data, the first uplink data being generated by the first communication apparatus based on the dynamically switched parameter information, the first uplink data transmitted from the first communication apparatus using uplink resources selected from the grant-free transmission available resources,
• wherein the slot format information comprises:
• first slot format information implicitly indicating first parameter information corresponding to when the first uplink data does not interfere with second uplink data of a grant based transmission, and
• second slot format information implicitly indicating second parameter information corresponding to when the first uplink data does interfere with the second uplink data of the grant based transmission.