Terminal, base station, and wireless communication method

1 . A terminal comprising:

receiving circuitry configured to:

receive, from a core network device, a Non Access Stratum (NAS) message,

receive, from a base station, a Radio Resource Control (RRC) message, and

controlling circuitry configured to determine, based on a first parameter value of an extended discontinuous reception (eDRX) cycle included in the RRC message, a paging occasion for monitoring of physical downlink control channel (PDCCH) candidates in a search space for a paging, wherein:

in a case where the terminal is in a RRC inactive state, the controlling circuitry is configured to control to use a second parameter value of the eDRX cycle included in the NAS message for determination of the paging occasion, based on the first parameter value of the eDRX cycle not being included in the RRC message.

2 . The terminal according to claim 1 , wherein:

a third parameter value of a paging timing window of the eDRX is included in the NAS message.

3 . The terminal according to claim 2 , wherein a fourth parameter value of a paging timing window of the eDRX is included in the RRC message.

4 . The terminal according to claim 1 , wherein:

the core network device is Access and Mobility Management Function.

5 . A base station comprising:

transmitting circuitry configured to:

transmit, to a terminal, a Radio Resource Control (RRC) message, and

transmit on a physical downlink control channel (PDCCH), to the terminal, downlink control information for a paging, and

controlling circuitry configured to control, based on a first parameter value of an extended discontinuous reception (eDRX) cycle included in the RRC message, determination of a paging occasion for monitoring of PDCCH candidates in a search space for a paging, wherein:

in a case where the terminal is in a RRC inactive state, the controlling circuitry is configured to control the terminal to use a second parameter value of the eDRX cycle included in a Non Access Stratum (NAS) message for the determination of the paging occasion, based on the first parameter value of the eDRX cycle not being included in the RRC message.

6 . The base station according to claim 5 , wherein:

a third parameter value of a paging timing window of the eDRX is included in the NAS message.

7 . The base station according to claim 6 , wherein a fourth parameter value of a paging timing window of the eDRX is included in the RRC message.

8 . The base station according to claim 5 , wherein:

the second parameter value of the eDRX cycle included in the NAS message is transmitted by a core network device.

9 . A wireless communication method for a terminal, the wireless communication method comprising:

receiving, from a core network device, a Non Access Stratum (NAS) message,

receiving, from a base station, a Radio Resource Control (RRC) message, and

determining, based on a first parameter value of an extended discontinuous reception (eDRX) cycle included in the RRC message, a paging occasion for monitoring of physical downlink control channel (PDCCH) candidates in a search space for a paging, and

in a case where the terminal is in a RRC inactive state, controlling to use a second parameter value of the eDRX cycle included in the NAS message for determination of the paging occasion, based on the first parameter value of the eDRX cycle not being included in the RRC message.

10 . The wireless communication method according to claim 9 , wherein:

a third parameter value of a paging timing window of the eDRX is included in the NAS message.

11 . The wireless communication method according to claim 10 , wherein a fourth parameter value of a paging timing window of the eDRX is included in the RRC message.

12 . The wireless communication method according to claim 9 , wherein:

the core network device is Access and Mobility Management Function.