Communication method, communications apparatus, and storage medium
Embodiments of this application provide a communication method, a communications apparatus, and a storage medium. The communication method includes: sending, by a new master network device, a request to an original master network device, to request context information of a terminal device on the original master network device and an original secondary network device; and receiving the context information of the terminal device on the original master network device and the original secondary network device from the original master network device. This application can effectively simplify implementation steps of resuming a multi-connectivity mode by the terminal device, reduce signaling procedures, and shorten a delay, thereby improving network transmission efficiency.
1. A method, comprising:
sending, by a first network device, a first request to a second network device, wherein the first request requests context information of a terminal device on the second network device, wherein the second network device is an original master network device of the terminal device in a first connected state, the first network device is a third network device, wherein the third network device is an original secondary network device of the terminal device in the first connected state, and wherein the first network device is a new master network device of the terminal device in a second connected state after an inactive state, and the first connected state is before the inactive state; and
receiving, by the first network device, the context information of the terminal device on the second network device from the second network device.
2. The method according to claim 1 , wherein the first request comprises request indication information, and
wherein the request indication information requests the context information of the terminal device on the second network device.
3. The method according to claim 1 , further comprising:
receiving, by the first network device, a second request from the terminal device, wherein the second request comprises measurement indication information, and the measurement indication information indicates a cell satisfying a report threshold; and
selecting, by the first network device based on the measurement indication information, a fourth network device from at least one network device corresponding to the cell satisfying the report threshold, as a new secondary network device of the terminal device.
4. The method according to claim 3 , wherein the measurement indication information comprises identity information of the cell satisfying the report threshold.
5. The method according to claim 3 , wherein the measurement indication information comprises an index of the cell satisfying the report threshold or information indicating whether at least one cell satisfies the report threshold.
6. The method according to claim 5 , further comprising:
sending, by the first network device to the second network device, the index of the cell satisfying the report threshold; or
sending, by the first network device to the second network device, the information indicating whether the at least one cell satisfies the report threshold.
7. The method according to claim 6 , further comprising:
receiving, by the first network device from the second network device, identity information of the cell satisfying the report threshold.
8. The method according to claim 3 , wherein the measurement indication information further comprises information indicating a measurement result corresponding to the cell satisfying the report threshold.
9. The method according to claim 3 , wherein the measurement indication information further comprises the report threshold.
10. The method according to claim 3 , further comprising:
receiving, by the first network device from the second network device, threshold information indicating the report threshold.
11. The method according to claim 3 , further comprising:
sending, by the first network device, a fourth request to the third network device, wherein the fourth request comprises an identifier of the terminal device and context information of the terminal device on the third network device.
12. The method according to claim 3 , further comprising:
sending, by the first network device, a response to the terminal device, wherein the response comprises information about a new secondary cell, the new secondary cell is served by the fourth network device, and the information about the new secondary cell indicates adding, activating, or modifying the new secondary cell of the terminal device.
13. The method of claim 1 , wherein the context information of the terminal device on the second network device includes multi-connection context information.
14. A method, comprising:
receiving, by a second network device, a first request from a first network device, wherein the first request requests context information of a terminal device on the second network device, wherein the second network device is an original master network device of the terminal device in a first connected state, the first network device is a third network device, wherein the third network device is an original secondary network device of the terminal device in the first connected state, and wherein the first network device is a new master network device of the terminal device in a second connected state after an inactive state, and the first connected state is before the inactive state; and
sending, by the second network device, the context information of the terminal device on the second network device to the first network device.
15. The method according to claim 14 , wherein the first request comprises:
request indication information, wherein the request indication information requests the context information of the terminal device on the second network device.
16. The method according to claim 14 , further comprising:
receiving, by the second network device from the first network device, an index of a cell satisfying a report threshold; or
receiving, by the second network device from the first network device, information indicating whether at least one cell satisfies the report threshold.
17. The method according to claim 16 , further comprising:
sending, by the second network device to the first network device, identity information of the cell satisfying the report threshold.
18. The method according to claim 16 , further comprising:
sending, by the second network device to the first network device, threshold information indicating the report threshold.
19. An apparatus, comprising:
at least one processor, wherein the at least one processor is coupled to a memory; and
the memory, configured to store a computer program,
wherein the at least one processor is configured to execute the computer program stored in the memory, to cause the apparatus to perform operations including:
sending a first request to a second network device, the apparatus being a first network device or a chipset configured to be disposed in the first network device, wherein the first request requests context information of a terminal device on the second network device, wherein the second network device is an original master network device of the terminal device in a first connected state, the first network device is a third network device, wherein the third network device is an original secondary network device of the terminal device in the first connected state, and wherein the first network device is a new master network device of the terminal device in a second connected state after an inactive state, and the first connected state is before the inactive state; and
receiving the context information of the terminal device on the second network device from the second network device.
20. The apparatus according to claim 19 , wherein the first request comprises request indication information, and
wherein the request indication information requests the context information of the terminal device on the second network device.
21. The apparatus according to claim 19 , further comprising:
receiving a second request from the terminal device, wherein the second request comprises measurement indication information, and the measurement indication information indicates a cell satisfying a report threshold; and
selecting, based on the measurement indication information, a fourth network device from at least one network device corresponding to the cell satisfying the report threshold, as a new secondary network device of the terminal device.