METHOD, DEVICE, AND SYSTEM FOR RETURNING TO LONG TERM EVOLUTION LTE NETWORK
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United States of America Patent
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app pub date -
May 4, 2015
filing date -
Nov 5, 2012
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Abandoned
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Abstract
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.
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