Method and apparatus for inactive mode operation in wireless communication system
The disclosure relates to a communication method and system for converging a 5 th -generation (5G) communication system for supporting higher data rates beyond a 4 th -generation (4G) system with a technology for Internet of things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method is provided for a terminal to transmit uplink data without a transmission resource previously allocated by a base station in a next generation mobile communication system. A method by a terminal includes while the terminal is in an inactive mode, receiving a paging message from a base station, identifying a paging identifier included in the paging message, if the paging identifier corresponds to a core network (CN) paging identifier, transmitting a first radio resource control (RRC) message, and if the paging identifier corresponds to a radio access network (RAN) paging identifier, transmitting a second RRC message.
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving a first radio resource control (RRC) release message including paging area information;
transmitting an RRC resume request message including a resume cause set to an update of paging area in case that the terminal is in an RRC inactive state and the update of paging area is required based on the paging area information;
receiving a second RRC release message including new paging area information; and
applying the new paging area information,
wherein the update of paging area is required in case that the terminal enters an area not belonging to a paging area configured by the paging area information.
2. The method of claim 1 ,
wherein, in case that the paging area information includes a cell identity, a paging area for an inactive mode is a cell corresponding to the cell identity, and
wherein, in case that the paging area information includes a RAN area identity, a paging area for the inactive mode is a RAN area corresponding to the RAN area identity.
3. The method of claim 1 , further comprising:
receiving a paging message including a paging identifier;
in case that the paging identifier corresponds to a core network (CN) paging identifier, performing actions associated with an RRC IDLE; and
in case that the paging identifier corresponds to a radio access network (RAN) paging identifier, performing an RRC connection resume procedure.
4. The method of claim 3 ,
wherein, in case that the paging identifier corresponds to the CN paging identifier, the paging identifier includes a system architecture evolution (SAE)—temporary mobile subscriber identity (S-TMSI) or an international mobile subscriber identity (IMSI), and
wherein, in case that the paging identifier corresponds to the RAN paging identifier, the paging identifier includes a resume identity.
5. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
a controller configured to:
receive a first radio resource control (RRC) release message including paging area information,
transmit, via the transceiver, an RRC resume request message including a resume cause for set to an update of paging area in case that the terminal is in an RRC inactive state and the update of paging area is required based on the paging area information,
receive, via the transceiver, a second RRC release message including new paging area information, and
apply the new paging area information,
wherein the update of paging area is required in case that the terminal enters an area not belonging to a paging area configured by the paging area information.
6. The terminal of claim 5 ,
wherein, in case that the paging area information includes a cell identity, a paging area for an inactive mode is a cell corresponding to the cell identity, and
wherein, in case that the paging area information includes a RAN area identity, a paging area for the inactive mode is a RAN area corresponding to the RAN area identity.
7. The terminal of claim 5 , wherein the controller is further configured to:
receive a paging message including a paging identifier,
in case that the paging identifier corresponds to a core network (CN) paging identifier, perform actions associated with an RRC IDLE, and
in case that the paging identifier corresponds to a radio access network (RAN) paging identifier, perform an RRC connection resume procedure.
8. The terminal of claim 7 ,
wherein, in case that the paging identifier corresponds to the CN paging identifier, the paging identifier includes a system architecture evolution (SAE)-temporary mobile subscriber identity (S-TMSI) or an international mobile subscriber identity (IMSI), and
wherein, in case that the paging identifier corresponds to the RAN paging identifier, the paging identifier includes a resume identity.
9. A method performed by a base station in a wireless communication system, the method comprising:
transmitting a first radio resource control (RRC) release message including paging area information;
receiving, from a terminal, an RRC resume request message including a resume cause set to an update of paging area in case that the terminal is in an RRC inactive state and the update of paging area is required based on the paging area information; and
transmitting, to the terminal, a second RRC release message including new paging area information for applying updated paging area,
wherein the update of paging area is required in case that the terminal enters an area not belonging to a paging area configured by the paging area information.
10. The method of claim 9 ,
wherein, in case that the paging area information includes a cell identity, a paging area for an inactive mode is a cell corresponding to the cell identity, and
wherein, in case that the paging area information includes a RAN area identity, a paging area for the inactive mode is a RAN area corresponding to the RAN area identity.
11. The method of claim 9 , further comprising:
transmitting a paging message including a paging identifier,
wherein, in case that the paging identifier corresponds to a core network (CN) paging identifier, actions associated with an RRC IDLE are performed, and
wherein, in case that the paging identifier corresponds to a radio access network (RAN) paging identifier, an RRC connection resume procedure is performed.
12. The method of claim 11 ,
wherein, in case that the paging identifier corresponds to the CN paging identifier, the paging identifier includes a system architecture evolution (SAE)-temporary mobile subscriber identity (S-TMSI) or an international mobile subscriber identity (IMSI), and
wherein, in case that the paging identifier corresponds to the RAN paging identifier, the paging identifier includes a resume identity.
13. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a controller configured to:
transmit, via the transceiver, a first radio resource control (RRC) release message including paging area information,
receive, from a terminal via the transceiver, an RRC resume request message including a resume cause set to an update of paging area in case that the terminal is in an RRC inactive state and the update of paging area is required based on the paging area information, and
transmit, to the terminal via the transceiver, a second RRC release message including new paging area information for applying updated paging area,
wherein the update of paging area is required in case that the terminal enters an area not belonging to a paging area configured by the paging area information.
14. The base station of claim 13 ,
wherein, in case that the paging area information includes a cell identity, a paging area for an inactive mode is a cell corresponding to the cell identity, and
wherein, in case that the paging area information includes a RAN area identity, a paging area for the inactive mode is a RAN area corresponding to the RAN area identity.
15. The base station of claim 13 , wherein the controller is further configured to:
transmit a paging message including a paging identifier,
wherein, in case that the paging identifier corresponds to a core network (CN) paging identifier, actions associated with an RRC IDLE are performed, and
wherein, in case that the paging identifier corresponds to a radio access network (RAN) paging identifier, an RRC connection resume procedure is performed.
16. The base station of claim 15 ,
wherein, in case that the paging identifier corresponds to the CN paging identifier, the paging identifier includes a system architecture evolution (SAE)-temporary mobile subscriber identity (S-TMSI) or an international mobile subscriber identity (IMSI), and
wherein, in case that the paging identifier corresponds to the RAN paging identifier, the paging identifier includes a resume identity.