Method and apparatus for supporting light connection in next generation mobile communication systems

A method performed by a second base station in a wireless communication system, the method comprising:

• transmitting, to a terminal in a radio resource control (RRC) inactive state and configured with a paging area, a system information block 1 (SIB1);
• receiving, from the terminal, an RRC resume request message to resume an RRC connection from the RRC inactive state, wherein the RRC resume request message includes a cause value for updating the paging area in case that a cell does not belong to the paging area;
• and
• transmitting, to the terminal, an RRC release message for the RRC resume request message, the RRC release message including first information associated with an updated paging area.

A terminal in a wireless communication system, the terminal comprising:

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• receive, from a first base station, a first radio resource control (RRC) release message in an RRC connected state, the first RRC release message including first information configuring an RRC inactive state and second information associated with a paging area,
• receive, from a second base station, a system information block 1 (SIB1) in the RRC inactive state,
• identify a cell that does not belong to the paging area based on the SIB1,
• transmit, to the second base station, an RRC resume request message to resume an RRC connection from the RRC inactive state, the RRC resume request message including a cause value for updating the paging area, and
• receive, from the second base station, a second RRC release message for the RRC resume request message, the second RRC release message including third information associated with an updated paging area.

A second base station in a wireless communication system, the second base station comprising:

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• transmit, to a terminal in a radio resource control (RRC) inactive state and configured with a paging area, a system information block 1 (SIB1),
• receive, from the terminal, an RRC resume request message to resume an RRC connection from the RRC inactive state, wherein the RRC resume request message includes a cause value for updating the paging area in case that a cell does not belong to the paging area, and
• transmitting, to the terminal, an RRC release message for the RRC resume request message, the RRC release message including first information associated with an updated paging area.