User device migration method, core network device, access network device, and system

摘要

The present invention discloses a user device migration method, a core network device, an access network device and a system for implementing flexible migration of a UE in a core network device pool. The method includes receiving, by a source core network device, a migration command sent by a core network management device, the migration command carrying first identification information of the target core network device and migration information of the UE to be migrated; ; Sending, by the source core network device, an indication message used to instruct the UE to be migrated to separate according to the migration information of the UE to be migrated to the UE to be migrated; The source core network device, to the access network device according to the migration command, such that the access network device can migrate the UE to be migrated from the source core network device to the target core network device according to a migration rule. Sending the migration rule, wherein the migration rule includes identification information of the source core network device and second identification information of the target core network device.