公开(公告)号：US20180070402A1

公开(公告)日：2018-03-08

申请号：US15466096

申请日：2017-03-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Srinivas CHINTHALAPUDI ,  Prasad Basavaraj DANDRA ,  Manan DIXIT ,  Kedar Santosh Kumar AALLA

IPC: H04W76/04 ,  H04L29/06 ,  H04W76/06 ,  H04W24/04

CPC classification number: H04W76/25 ,  H04L65/1016 ,  H04L65/1073 ,  H04L65/1083 ,  H04L65/80 ,  H04W76/27 ,  H04W76/38

Abstract: Methods and User Equipment (UE) for managing IMS call over LTE in SRVCC area are provided. The method may include detecting, by an IMS client, that the IMS call over LTE is in an alert state, and a Radio Resource Control (RRC) reconfiguration cells are configured for the IMS call over LTE. Further, the method may include initiating by the IMS client a timer with a value less than a data inactivity timer value from a network entity. Further, the method may include detecting by IMS client that the timer has expired before establishing the IMS call over LTE and restarting by the IMS client the timer. Furthermore, the method may include sending by the IMS client a Session Initiation Protocol (SIP) message to the network entity.