METHOD AND APPARATUS FOR INACTIVE MODE OPERATION IN WIRELESS COMMUNICATION SYSTEM

• US 20180234941A1
• Filed: 02/09/2018
• Published: 08/16/2018
• Est. Priority Date: 02/10/2017
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Soenghun, KIM, Sangbum, JANG, Jaehyuk, KIM, Donggun, JIN, Seungri
• Granted Patent: US 10,314,005 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 68/005 Transmission of information for alerting of incoming communication
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/19 Connection re-establishment
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

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.

Claims

1. A method by a terminal in a wireless communication system, the method comprising:

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.

2. The method of claim 1,

wherein the CN paging identifier includes a system architecture evolution (SAE)-temporary mobile subscriber identity (S-TMSI) or an international mobile subscriber identity (IMSI), and

wherein the RAN paging identifier includes a resume identity.

3. The method of claim 1,

wherein the first RRC message includes an RRC connection request message, and

wherein the second RRC message includes an RRC connection resume request message.

4. The method of claim 1, wherein the CN paging identifier is included in the paging message, if the base station does not store a context for the terminal.

5. The method of claim 1, wherein, if the RAN paging identifier is included in the paging message and if the terminal stores a context, the second RRC message is transmitted.

6. A terminal comprising:

a transceiver configured to transmit and receive a signal; and

a controller configured to;

while the terminal is in an inactive mode, receive a paging message from a base station,

identify a paging identifier included in the paging message,

if the paging identifier corresponds to a core network (CN) paging identifier, transmit a first radio resource control (RRC) message, and

if the paging identifier corresponds to a radio access network (RAN) paging identifier, transmit a second RRC message.

7. The terminal of claim 6,

wherein the CN paging identifier includes a system architecture evolution (SAE)-temporary mobile subscriber identity (S-TMSI) or an international mobile subscriber identity (IMSI), and

wherein the RAN paging identifier includes a resume identity.

8. The terminal of claim 6,

wherein the first RRC message includes an RRC connection request message, and

wherein the second RRC message includes an RRC connection resume request message.

9. The terminal of claim 6, wherein the CN paging identifier is included in the paging message, if the base station does not store a context for the terminal.

10. The terminal of claim 6, wherein, if the RAN paging identifier is included in the paging message and if the terminal stores a context, the second RRC message is transmitted.

11. A method by a base station in a wireless communication system, the method comprising:

transmitting a paging message to a terminal that is in an inactive mode;

receiving a connection request message corresponding to a paging identifier included in the paging message from the terminal; and

transmitting a first radio resource control (RRC) message or a second RRC message to the terminal based on the connection request message.

12. The method of claim 11,

wherein, if the paging message is initiated from a core network (CN) node, the paging message includes a system architecture evolution (SAE)-temporary mobile subscriber identity (S-TMSI) or an international mobile subscriber identity (IMSI), and

wherein, if the paging message is initiated from the base station, the paging message includes a resume identity.

13. The method of claim 11, wherein, if the base station does not store a context for the terminal, the paging message includes a CN paging identifier.

14. The method of claim 11,

wherein, if the paging message includes a CN paging identifier, the connection request message is an RRC connection request message and the first RRC message is an RRC connection setup message, and

wherein, if the paging message includes a radio access network (RAN) paging identifier, the connection request message is an RRC connection resume request message and the second RRC message is an RRC connection resume message.

15. The method of claim 11, further comprising transmitting a CN paging request to a CN node if the connection request message is not received from the terminal for a predetermined time after the paging message is transmitted.

16. A base station comprising:

a transceiver configured to transmit and receive a signal; and

a controller configured to;

transmit a paging message to a terminal being that is in an inactive mode,

receive a connection request message corresponding to a paging identifier included in the paging message from the terminal, and

transmit a first radio resource control (RRC) message or a second RRC message to the terminal based on the connection request message.

17. The base station of claim 16,

wherein, if the paging message is initiated from a core network (CN) node, the paging message includes a system architecture evolution (SAE)-temporary mobile subscriber identity (S-TMSI) or an international mobile subscriber identity (IMSI), and

wherein if the paging message is initiated from the base station, the paging message includes a resume identity.

18. The base station of claim 16, wherein, if the base station does not store a context for the terminal, the paging message includes a CN paging identifier.

19. The base station of claim 16,

wherein, if the paging message includes a CN paging identifier, the connection request message is an RRC connection request message and the first RRC message is an RRC connection setup message, and

wherein, if the paging message includes a radio access network (RAN) paging identifier, the connection request message is an RRC connection resume request message and the second RRC message is an RRC connection resume message.

20. The base station of claim 16, wherein the controller is further configured to transmit a CN paging request to a CN node if the connection request message is not received from the terminal for a predetermined time after the paging message is transmitted.