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公开(公告)号：US10485050B2
公开(公告)日：2019-11-19
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
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.
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22.发明授权公开(公告)号：US10362529B2
公开(公告)日：2019-07-23
申请号：US14532451
申请日：2014-11-04
Applicant: Samsung Electronics Co., Ltd.
Inventor： Prakash Rao , Pavan Kumar Devarayanigari , Dandra Prasad Basavaraj , Srinivas Chinthalapudi , Vijay Ganesh Surisetty
Abstract: The various embodiments herein provide a method and system for optimizing Closed Subscriber Group (CSG) selection in wireless communication. The method comprising steps of initiating, by a user equipment (UE), a manual CSG selection, verifying if a manual CSG selection request is new, storing a registered public land mobile network (RPLMN) and a corresponding public land mobile network (PLMN) Selection mode if the CSG selection request is new, changing a PLMN selection mode and the CSG selection mode to MANUAL, registering the UE on to a user selected CSG cell, storing one or more parameters associated with the user selected CSG cell if the registration is successful irrespective of CSG cell belonging to RPLMN or different PLMN and selecting the user selected CSG cell using a stored PLMN ID and a CSG ID combination in the current PLMN selection mode during power off and power on.
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公开(公告)号：US10135886B2
公开(公告)日：2018-11-20
申请号：US14643880
申请日：2015-03-10
Applicant: Samsung Electronics Co., Ltd.
Inventor： Praveen Chebolu , Ganesh Babu Kamma , Varun Bharadwaj Santhebenur Vasudevamurthy , Shaik Abdulla , Ajay Kumar Kabadi , Srinivas Chinthalapudi , Harsh Maheshchand Kothari
IPC: H04L29/06
Abstract: A method for retaining a Robust Header Compression (ROHC) state in a User Equipment (UE) during switching from a Voice over Long Term Evolution (VoLTE) call to a video call or vice versa is provided. When the VoLTE call is in progress and if a user switches the VoLTE call to the video call, then the RTP header information is sent to an Application Processor (AP) from a Communication Processor (CP). The ROHC compressor continues the compression of the RTP packets using the existing built context for the video call. Further, when the video call is in progress and if the user switches the video call to the VoLTE call, then the RTP header information is sent to the CP from the AP. The ROHC context is reused by exchanging the RTP header information between the AP and the CP.
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公开(公告)号：US09826472B2
公开(公告)日：2017-11-21
申请号：US14719696
申请日：2015-05-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Dandra Prasad Basavaraj , Pavan Kumar Devarayanigari , Srinivas Chinthalapudi , Vijay Ganesh Surisetty
Abstract: An apparatus and a method of selecting Public Land Mobile Networks (PLMNs) in a manual PLMN selection mode are provided. The method includes selecting a PLMN as a network that the terminal will be attached to in a manual PLMN selection mode, storing the selected PLMN in a user selection PLMN list, and selecting, when the terminal attempts recovery to receive normal services in a limited service state, a PLMN to be attached to a network based on at least one PLMN included in the stored user selection PLMN list.
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