Terminal, a base station, and a wireless communication method each of which is able to control monitoring of pei appropriately

A base station comprising:

• a memory storing instructions;
• and
• one or more processors configured to execute the instructions to:
• determine a total number of subgroups of a paging occasion and a number of paging occasions for a paging frame;
• determine a subgroup of the paging occasion for a terminal;
• transmit, to the terminal, system information including information for indicating the total number of subgroups of the paging occasion and information for indicating the number of paging occasions for the paging frame;
• and
• transmit, to the terminal, first downlink control information including a paging indication field for indicating a subgroup of the paging occasion, wherein
• a value of the bit in the paging indication field corresponding to the subgroup of the paging occasion to which the terminal belongs is determined based on the information for indicating the total number of subgroups of the paging occasion, the information for indicating the number of paging occasions for the paging frame, and an identifier of the terminal,
• a number of bits for the paging indication field is determined based on the information for indicating the total number of subgroups of the paging occasion,
• the paging indication field includes a bitmap with the number of bits based on the information for indicating the total number of subgroups of the paging occasion, and
• respective bits of the bitmap from a most significant bit to a least significant bit correspond to the subgroups of the paging occasion in ascending order of index values of the subgroups.

A wireless communication method performed by a terminal, the wireless communication method comprising:

• receiving, from a base station, system information including information for indicating a total number of subgroups of a paging occasion and information for indicating a number of paging occasions for a paging frame;
• receiving, from the base station, first downlink control information including a paging indication field for indicating a subgroup of the paging occasion;
• determining the subgroup of the paging occasion to which the terminal belongs based on the information for indicating the total number of subgroups of the paging occasion, the information for indicating the number of paging occasions for the paging frame, and an identifier for the terminal;
• determining a number of bits for the paging indication field based on the information for indicating the total number of subgroups of the paging occasion;
• and
• monitoring a physical downlink control channel (PDCCH) for second downlink control information in the paging occasion based on a value of the bit in the paging indication field corresponding to the subgroup of the paging occasion to which the terminal belongs.