Terminal and communication method
A terminal includes a receiving unit that receives a configuration on dormancy of one or more secondary cells from a base station through higher layer signaling, and that receives control information including a notification related to dormancy through a physical layer; and a control unit that transitions a secondary cell group configured by the configuration to a dormant state or a non-dormant state on a per secondary cell group basis, based on a specific field included in the control information.
1. A terminal comprising:
a receiver that receives a configuration on dormancy of one or more secondary cells from a base station through higher layer signaling, and that receives control information including a notification related to dormancy through a physical layer; and
a processor that transitions a secondary cell group configured by the configuration to a dormant state or a non-dormant state on a per secondary cell group basis, based on a specific field included in the control information,
wherein the control information is not for scheduling,
wherein the specific field includes at least one item of information selected from:
Modulation and coding scheme (MCS);
New data indicator (NDI);
Redundancy version (RV);
Hybrid automatic repeat request (HARQ) process number;
Antenna port;
Demodulation Reference Signal (DMRS) sequence initialization; and
Secondary cell dormancy indication, and
wherein, when a number of bits in the specific field exceeds a number of secondary cells that are subject to the configuration on dormancy, the processor uses, as the configuration, a configuration on dormancy for one or more secondary cells, which is for scheduling.
2. The terminal according to claim 1 , wherein the number of the secondary cells that are subject to the configuration on dormancy is a number of secondary cells for which dormant Bandwidth Part (BWPs) are configured.
3. A communication method in which a terminal executes:
receiving a configuration on dormancy for one or more secondary cells from a base station through higher layer signaling, and receiving control information including a notification related to dormancy through a physical layer; and
transitioning a secondary cell group configured by the configuration to a dormant state or a non-dormant state on a per secondary cell group basis, based on a specific field included in the control information,
wherein the control information is not for scheduling,
wherein the specific field includes at least one item of information selected from:
Modulation and coding scheme (MCS);
New data indicator (NDI);
Redundancy version (RV);
Hybrid automatic repeat request (HARQ) process number;
Antenna port;
Demodulation Reference Signal (DMRS) sequence initialization; and
Secondary cell dormancy indication, and
wherein, when a number of bits in the specific field exceeds a number of secondary cells that are subject to the configuration on dormancy, the terminal uses, as the configuration, a configuration on dormancy for one or more secondary cells, which is for scheduling.