Application data migration method and network device

Patent metadata

Field	Value
Publication number	US-10827003-B2
Application number	US-201916657888-A
Country	US
Kind code	B2
Filing date	Oct 18, 2019
Priority date	Apr 21, 2017
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

Embodiments of this application provide an application data migration method, including: obtaining, by a network device, a first, second, and third parameter, where the first parameter includes a delay in communication between a terminal device and a first server through a first connection, the second parameter includes a delay in communication between the terminal device and a second server through a second connection, and the third parameter includes a time for synchronizing a context between the first server and the second server; and if the first parameter is greater than a sum of the second parameter and the third parameter, determining, by the network device, that application data on the terminal device needs to be migrated from the first connection to the second connection; otherwise, determining, by the network device, that application data does not need to be migrated from the first connection to the second connection.

First claim

What is claimed is:

1. A method for application data migration, comprising:
obtaining, by a network device, a first parameter, a second parameter, and a third parameter, wherein the first parameter comprises a delay in communication between a terminal device and a first server through a first connection, the second parameter comprises a delay in communication between the terminal device and a second server through a second connection, and the third parameter comprises a time for synchronizing a context between the first server and the second server; and
if the first parameter is greater than a sum of the second parameter and the third parameter, determining, by the network device, that application data on the terminal device needs to be migrated from the first connection to the second connection; or
if the first parameter is not greater than the sum of the second parameter and the third parameter, determining, by the network device, that application data on the terminal device does not need to be migrated from the first connection to the second connection.

2. The method according to claim 1 , wherein
the network device is the first server; and
obtaining the third parameter comprises: receiving, by the first server, the third parameter from the second server.

3. The method according to claim 2 , wherein obtaining the second parameter comprises:
obtaining, by the first server, a delay estimation value for communication between the terminal device and a third server through an established connection, and determining the delay estimation value as the second parameter; or
receiving, by the first server, the second parameter from the terminal device.

4. The method according to claim 1 , wherein
the network device is the second server; and
obtaining the third parameter comprises: receiving, by the second server, the third parameter from the first server.

5. The method according to claim 4 , wherein obtaining the second parameter comprises:
obtaining, by the second server, a delay estimation value for communication between the terminal device and a third server through an established connection, and determining the delay estimation value as the second parameter; or
determining, by the second server, the second parameter.

6. The method according to claim 1 , wherein
the network device is a server controller; and
obtaining the third parameter comprises: receiving, by the server controller, the third parameter from the first server or the second server.

7. The method according to claim 6 , wherein obtaining the second parameter comprises:
obtaining, by the server controller, a delay estimation value for communication between the terminal device and a third server through an established connection, and determining the delay estimation value as the second parameter; or
receiving, by the server controller, the second parameter from the second server.

8. The method according to claim 4 , further comprising: if the network device determines that the application data needs to be migrated from the first connection to the second connection,
sending, by the network device, a handover indication message to the first server, wherein the handover indication message is used to instruct the first server to migrate the application data from the first connection to the second connection.

9. The method according to claim 1 , further comprising:
determining, by the network device, that the first parameter exceeds a preset value.

10. The method according to claim 1 , further comprising: if the network device determines that the application data does not need to be migrated from the first connection to the second connection,
transmitting, by the network device, the application data through the first connection; or
releasing, by the network device, the first connection.

11. A network device, comprising:
an interface;
a processor; and
a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:
obtain a first parameter, a second parameter, and a third parameter, wherein the first parameter comprises a delay in communication between a terminal device and a first server through a first connection, the second parameter comprises a delay in communication between the terminal device and a second server through a second connection, and the third parameter comprises a time for synchronizing a context between the first server and the second server;
if the first parameter is greater than a sum of the second parameter and the third parameter, determine that application data on the terminal device needs to be migrated from the first connection to the second connection; and
if the first parameter is not greater than the sum of the second parameter and the third parameter, determine that application data on the terminal device does not need to be migrated from the first connection to the second connection.

12. The network device according to claim 11 , wherein
the network device is the first server; and
to obtain the third parameter, the program includes instructions to receive the third parameter from the second server.

13. The network device according to claim 12 , wherein the program includes instructions to obtain a delay estimation value for communication between the terminal device and a third server through an established connection, and determine the delay estimation value as the second parameter; or receive the second parameter from the terminal device.

14. The network device according to claim 11 , wherein
the network device is the second server; and
the program includes instructions to receive the third parameter from the first server.

15. The network device according to claim 14 , wherein to obtain the second parameter, the program includes instructions to obtain a delay estimation value for communication between the terminal device and a third server through an established connection, and determine the delay estimation value as the second parameter; or determine the second parameter.

16. The network device according to claim 11 , wherein
the network device is a server controller; and
to obtain the third parameter, the program includes instructions to receive the third parameter from the first server or the second server.

17. The network device according to claim 16 , wherein to obtain the second parameter, the program includes instructions to obtain a delay estimation value for communication between the terminal device and a server through an established connection, and determine the delay estimation value as the second parameter; or receive the second parameter from the second server.

18. The network device according to claim 14 , wherein the program includes instructions to: upon determining that the application data needs to be migrated from the first connection to the second connection, send a handover indication message to the first server, wherein the handover indication message is used to instruct the first server to migrate the application data from the first connection to the second connection.

19. The network device according to claim 11 , wherein the program includes instructions to determine that the first parameter exceeds a preset value.

20. The network device according to claim 11 , wherein the program includes instructions to: upon determining that the application data does not need to be migrated from the first connection to the second connection, transmit the application data through the first connection; o

Assignees

• Huawei Tech Co Ltd

Inventors

• Yang Jiao
• Li Yan

Classifications

• H04W36/0083

  Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists · CPC title

• H04L67/148 Primary

  Migration or transfer of sessions · CPC title

• H04L67/1008

  based on parameters of servers, e.g. available memory or workload (monitoring of computer activity G06F11/30) · CPC title

• H04L65/1063

  Application servers providing network services (systems providing special services to telephonic subscribers H04M3/42) · CPC title

• H04W56/00

  Synchronisation arrangements · CPC title