Invention Grant
- Patent Title: Network handover method, device, and system
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Application No.: US15142455Application Date: 2016-04-29
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Publication No.: US09826440B2Publication Date: 2017-11-21
- Inventor: Xiaobo Wu , Ye Zou
- Applicant: HUAWEI TECHNOlOGIES CO., LTD.
- Applicant Address: CN Shenzhen
- Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee Address: CN Shenzhen
- Agency: Staas & Halsey LLP
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04L5/00 ; H04L12/923 ; H04W72/08 ; H04W76/02 ; H04W88/12 ; H04W88/16

Abstract:
In a network handover method, after UE located on an LTE network initiates a request message that requests CSFB, an MME instructs an enodeB to move the UE from the LTE network to a 2G or 3G network, and requests an MSC to hand over the UE from the LTE network to a CS domain of the 2G or 3G network for the CSFB, so that the 2G or 3G network allocates a CS domain resource to the UE. Further, by determining that an IMS voice session does not exist, it is identified that the handover of the UE from the LTE network to the CS domain of the 2G or 3G network is triggered by the CSFB, so as to ensure that handover from the LTE network is properly performed.
Public/Granted literature
- US20160249257A1 NETWORK HANDOVER METHOD, DEVICE, AND SYSTEM Public/Granted day:2016-08-25
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