Method and apparatus for applying discontinuous reception mode in wireless communication system

A method of a base station, the method comprising:

• transmitting, to a terminal, in case that the base station supports an extended discontinuous reception (DRX) mode, first system information including first information for the extended DRX mode;
• transmitting, to the terminal, second system information including second information associated with a DRX cycle;
• receiving, to a mobility management entity (MME), a paging message;
• in case that the paging message includes third information for an operation in the emended DRX mode, performing a paging operation for the extended DRX mode based on the second information and the third information;
• and
• in case that the paging message does not include the third information for the operation in the extended DRX mode, performing a paging operation for a regular DRX mode based on the second information.

A method of a mobility management entity (MME), the method comprising steps of:

• receiving, from a terminal, a request message generated based on first system information including first information for an extended discontinuous reception (DRX) mode, the request message including second information for an operation in the extended DRX mode;
• determining whether to accept use of the extended DRX mode based on the request message;
• in case that it is determined to accept the use of the extended DRX mode, transmitting, to the terminal, a response message including third information for the operation in the extended DRX mode;
• and
• in case that it is determined to reject the use of the extended DRX mode, transmitting, to the terminal, the response message not including the third information, wherein the third information is included in a paging message transmitted to the base station, in case that it is determined to accept the use of the extended DRX mode, and
• wherein the third information is not included in the paging message transmitted to the base station, in case that it is determined to reject the use of the extended DRX mode.

A terminal, comprising:

• a transceiver configured to transmit or receive a signal to or from other network entity;
• and a controller configured to:
• receive, from a base station, first system information including first information for an extended discontinuous reception (DRX) mode,
• receive, from a base station, second system information including second information associated with a DRX cycle,
• determine whether to request an enablement of the extended DRX mode based on the first information,
• in case that it is determined to request the enablement of the extended DRX mode, transmit, to a mobility management entity (MME), a request message including third information for an operation in the extended DRX mode,
• receive, from the MME, a response message based on the request message,
• in case that the response message includes fourth information for the operation in the extended DRX mode, perform the operation in the extended DRX mode based on the second information and the fourth information, and
• in case that the response message does not include the fourth information for the operation in the extended DRX mode, perform an operation in a regular DRX mode based on the second information.

A base station, comprising:

• a transceiver configured to transmit or receive a signal to or from other network entity;
• and a controller configured to:
• transmit, to a terminal, in case that the base station supports an extended discontinuous reception (DRX) mode, first system information including first information for the extended DRX mode,
• transmit second system information including second information associated with a DRX cycle to the terminal,
• receive, from a mobility management entity (MME), a paging message,
• in case that the paging message includes third information for an operation in the extended DRX mode, perform a paging operation for the extended DRX mode based on the second Information and the thud information, and
• in case that the paging message does not include the third information for the operation in the extended DRX mode, perform a paging operation for a regular DRX mode based on the second information.

A mobility management entity (MME), comprising:

• a transceiver configured to transmit or receive a signal to or from other network entity;
• and a controller configured to:
• receive, from a terminal, a request message generated based on first system information including first information for an extended discontinuous reception (DRX) mode, the request message including second information for an operation in the extended DRX mode,
• determine whether to accept use of the extended DRX mode based on the request message,
• in case that it is determined to accept the use of the extended DRX mode, transmit, to the terminal, a response message including third information for the operation in the extended DRX mode, and transmit, to the base station, a paging message including the third information, and
• in case that it is determined to reject the use of the extended DRX mode, transmit, to the terminal, the response message not including the third information and transmit, to the base station, the paging message not including the third information.