METHOD, DEVICE, AND SYSTEM FOR RETURNING TO LONG TERM EVOLUTION LTE NETWORK

摘要

The present invention discloses a method, a device, and a system for returning to an LTE network. The method of the present invention includes: after a CSFB service of a UE ends, receiving, by a base station, a PLMN ID of an LTE network with which the UE registers, where the PLMN ID is sent by a serving MSC/VLR of the UE; determining LTE frequency band information according to the PLMN ID; and sending, to the UE, a connection release message that includes the LTE frequency band information, so that the UE returns to an LTE PLMN corresponding to a PLMN ID with which the UE previously registers, thereby ensuring continuity of a PS service, avoiding an unnecessary inter-PLMN handover.

主权项

1. A method for returning to a Long Term Evolution (LTE) network, the method comprising:
obtaining, by a base station, that a circuit switched fallback (CSFB) service of a user equipment (UE) ends; receiving, by the base station, a public land mobile network (PLMN) identity (ID) of an LTE network with which the UE registers, wherein the PLMN ID is sent by a serving mobile switching center/visitor location register (MSC/VLR); determining LTE frequency band information according to the PLMN ID; and sending, to the UE, a connection release message that comprises the LTE frequency band information.