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 a flexible migration of a UE in a core network device pool. The method includes receiving, by a source core network device, a migration command transmitted by a core network management device, the migration command carrying first identification information of a target core network device and migration information of a UE to be migrated, ; Sending, by the source core network device, an indication message used to indicate to the UE to be migrated to the migrated UE according to the migration information of the UE to be migrated; The access network device is configured to cause the access network device to communicate with the access network device in accordance with the migration rule so that the source network device can migrate the UE to be migrated from the source core network device to the target core network device, And transmitting the migration rule, wherein the migration rule includes the identification information of the source core network device and the second identification information of the target core network device.