Method and apparatus for controlling radio resource control (RRC) state of mobile device
This application provides method and apparatus for RRC state control. An access network device obtains RRC connected inactive state indication information of UE. When the UE leaves an RRC connected state, the access network device determines, based on the RRC connected inactive state indication information, that the UE enters an RRC connected inactive state or an RRC idle state, so that the access network device can control, based on a state of the UE, the UE to enter an appropriate RRC state, thereby reducing signaling overheads and improving system performance.
1. A method for controlling a radio resource control (RRC) state of a mobile device, comprising:
obtaining, by an access network device from a core network device, state indication information of the mobile device, wherein the state indication information is used by the access network device to determine whether the mobile device is suitable to enter an RRC inactive state, and the RRC inactive state is different from an RRC connected state or an RRC idle state; and
determining, by the access network device based on the state indication information, whether the mobile device is suitable to enter the RRC inactive state;
wherein
when the state indication information indicates that the mobile device is suitable to enter the RRC connected inactive state, the mobile device is determined to be suitable to enter the RRC connected inactive state;
when the state indication information indicates that the mobile device is not suitable to enter the RRC connected inactive state, the mobile device is determined to be suitable to enter the RRC idle state.
2. The method according to claim 1 , further comprising:
storing, by the access network device, the state indication information of the mobile device; and
based on a determination that the mobile device is suitable to enter the RRC inactive state, sending, by the access network device, a command of entering the RRC inactive state to the mobile device.
3. The method according to claim 1 , wherein the state indication information of the mobile device indicates whether all bearers, all network slices, or all service flows of the mobile device are suitable to enter the RRC inactive state.
4. The method according to claim 1 , wherein the state indication information of the mobile device comprises an indicator, the indicator indicates whether the mobile device is or is not suitable to enter the RRC inactive state.
5. A method for controlling a radio resource control (RRC) state of a mobile device, comprising:
determining, by a core network device based on information about the mobile device, whether the mobile device is suitable to enter an RRC inactive state; and
sending, by the core network device, state indication information of the mobile device to an access network device;
wherein the state indication information of the mobile device indicates to the access network device whether the mobile device is suitable to enter the RRC inactive state, and the RRC inactive state is different from an RRC connected state or an RRC idle state;
wherein
when the state indication information indicates that the mobile device is suitable to enter the RRC connected inactive state, the access network device determines that the mobile device is suitable to enter the RRC connected inactive state;
when the state indication information indicates that the mobile device is not suitable to enter the RRC connected inactive state, the access network device determines that the mobile device is suitable to enter the RRC idle state.
6. The method according to claim 5 , wherein the state indication information of the mobile device indicates whether all bearers, all network slices, or all service flows of the mobile device are suitable to enter the RRC inactive state.
7. An apparatus for controlling a radio resource control (RRC) state of a mobile device, applied in an access network device, comprising:
at least one processor, and a memory storing instructions for execution by the at least one processor;
wherein, when executed, the instructions cause the apparatus to:
obtain state indication information of the mobile device from a core network device, wherein the state indication information is used by the apparatus to determine whether the mobile device is suitable to enter an RRC inactive state, and the RRC inactive state is different from an RRC connected state or an RRC idle state; and
determine, based on the state indication information, whether the mobile device is suitable to enter the RRC inactive state;
wherein
when the state indication information indicates that the mobile device is suitable to enter the RRC connected inactive state, the mobile device is determined to be suitable to enter the RRC connected inactive state;
when the state indication information indicates that the mobile device is not suitable to enter the RRC connected inactive state, the mobile device is determined to be suitable to enter the RRC idle state.
8. The apparatus according to claim 7 , wherein the instructions further cause the apparatus to:
store the state indication information of the mobile device; and
based on a determination that the mobile device is suitable to enter the RRC inactive state, send a command of entering the RRC inactive state to the mobile device.
9. The apparatus according to claim 7 , wherein the state indication information of the mobile device indicates whether all bearers, all network slices, or all service flows of the mobile device are suitable to enter the RRC inactive state.
10. The apparatus according to claim 7 , wherein the state indication information of the mobile device comprises an indicator, the indicator indicates whether the mobile device is or is not suitable to enter the RRC inactive state.
11. An apparatus for controlling a radio resource control (RRC) state of a mobile device, applied in a core network device, comprising:
at least one processor, and a memory storing instructions executable by the at least one processor;
wherein, when executed, the instructions cause the apparatus to:
determine, based on information about the mobile device, whether the mobile device is suitable to enter an RRC inactive state; and
send state indication information of the mobile device to an access network device;
wherein the state indication information of the mobile device indicates to the access network device whether the mobile device is suitable to enter the RRC inactive state, and the RRC inactive state is different from an RRC connected state or an RRC idle state;
wherein
when the state indication information indicates that the mobile device is suitable to enter the RRC connected inactive state, the access network device determines that the mobile device is suitable to enter the RRC connected inactive state;
when the state indication information indicates that the mobile device is not suitable to enter the RRC connected inactive state, the access network device determines that the mobile device is suitable to enter the RRC idle state.
12. The apparatus according to claim 11 , wherein the state indication information of the mobile device indicates whether all bearers, all network slices, or all service flows of the mobile device are suitable to enter the RRC inactive state.
13. The method according to claim 1 , further comprising:
based on a determination that the mobile device is suitable to enter the RRC inactive state, storing, by the access network device, context information of the mobile device.
14. The method according to claim 5 , wherein in case that the mobile device is determined to be suitable to enter the RRC inactive state, context information of the mobile device is stored for the mobile device.
15. The method according to claim 5 , wherein the state indication information of the mobile device comprises an indicator, the indicator indicates whether the mobile device is or is not suitable to enter the RRC inactive state.
16. The apparatus according to claim 7 , wherein the instructions further cause the apparatus to:
based on a determination that the mobile device is suitable to enter the RRC inactive state, store context information of the mobile device.
17. The apparatus according to claim 11 , wherein in case that the mobile device is determined to be suitable to enter the RRC inactive state, context information of the mobile device is stored for the mobile device.
18. The apparatus according to claim 11 , wherein the state indication information of the mobile device comprises an indicator, the indicator indicates whether the mobile device is or is not suitable to enter the RRC inactive state.
19. A communication system for controlling a radio resource control (RRC) state of a mobile device, comprising a core network device and an access network device,
wherein
the core network device is configured to provide to the access network device, state indication information of the mobile device, the state indication information indicating whether the mobile device is suitable to enter an RRC inactive state, the RRC inactive state being different from an RRC connected state or an RRC idle state; and
the access network device is configured to determine, based on the state indication information, whether the mobile device is suitable to enter the RR C inactive state;
wherein
when the state indication information indicates that the mobile device is suitable to enter the RRC inactive state, the mobile device is determined to be suitable to enter the RRC connected inactive state;
when the state indication information indicates that the mobile device is not suitable to enter the RRC inactive state, the mobile device is determined to be suitable to enter the RRC idle state.
20. The communication system according to claim 19 , wherein the state indication information comprises an indicator, and the indicator indicates that the mobile device is suitable to enter the RRC inactive state or the mobile device is not suitable to enter the RRC inactive state.
21. The communication system according to claim 19 , wherein the state indication information of the mobile device indicates whether all bearers, all network slices, or all service flows of the mobile device are suitable to enter the RRC inactive state.