公开(公告)号：US10172051B2

公开(公告)日：2019-01-01

申请号：US15161874

申请日：2016-05-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ravi Krishna Hari Haran Sripada ,  Jaya Prakash Sivapuram

IPC: H04W36/04 ,  H04W48/14 ,  H04W48/18 ,  H04W48/20 ,  H04W84/04 ,  H04W8/18 ,  H04W36/00

Abstract: Methods and apparatuses are provided for optimizing service recovery during manual closed subscription group (CSG) cell selection in a long term evolution (LTE) network. A user equipment (UE) receives a registration rejection with a temporary cause from a network of a CSG cell selected through the manual CSG cell selection. It is determined from the registration rejection whether the temporary cause comprises a cause value that allows the UE to return to a saved or previously visited public land mobile network (PLMN). Service recovery of the UE is performed with a registered PLMN (RPLMN), if the temporary cause does not comprise the cause value that allows the UE to return to the saved or previously visited PLMN.

公开(公告)号：US20150289114A1

公开(公告)日：2015-10-08

申请号：US14678157

申请日：2015-04-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Prasad Basavaraj Dandra ,  Pavan Kumar Devarayanigari ,  Ravi Krishna Hari Haran Sripada ,  Vijay Ganesh Surisetty ,  Nitesh Pushpak Shah ,  Jaya Prakash Sivapuram

IPC: H04W4/08 ,  H04W48/16 ,  H04W76/00

CPC classification number: H04W4/08 ,  H04W48/16 ,  H04W48/18 ,  H04W76/40

Abstract: A method and user equipment for handling a Public Land Mobile Network (PLMN) selection in a mobile communication network is provided. The method includes obtaining, by a User Equipment (UE), a PLMN list of one or more Radio Access Technologies (RATs) comprising a list of available PLMNs, when the UE performs a Manual Closed Subscriber Group (CSG) selection, initiating a PLMN list validation timer, and reusing the previously obtained PLMN list, when at least one predefined event is triggered and the PLMN list validation timer is running. The at least one predefined event comprises at least one of Home Public Land Mobile Network (HPLMN) timer expiration, a manual PLMN selection, the manual CSG selection, and autonomous CSG selection.

Abstract translation: 提供了一种用于处理移动通信网络中的公共陆地移动网络（PLMN）选择的方法和用户设备。 该方法包括：当UE执行手动闭合用户组（CSG）选择时，由用户设备（UE）获得包括可用PLMN列表的一个或多个无线接入技术（RAT）的PLMN列表，发起PLMN 列表验证定时器，并且当触发至少一个预定事件并且PLMN列表验证定时器正在运行时，重用先前获得的PLMN列表。 所述至少一个预定义事件包括家庭公共陆地移动网络（HPLMN）定时器到期，手动PLMN选择，手动CSG选择和自主CSG选择中的至少一个。

公开(公告)号：US10142890B2

公开(公告)日：2018-11-27

申请号：US14759159

申请日：2014-01-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ajaykumar Kabadi ,  Kedar Santosh Kumar Aalla ,  Pavan Kumar Devarayanigari ,  Prakash Rao ,  Ravi Krishna Hari Haran Sripada ,  Srinivas Chinthalapudi

IPC: H04W36/00 ,  H04W48/08 ,  H04W48/16 ,  H04W48/18

Abstract: A method and system for minimizing delay in circuit-switched fallback (CSFB) procedure is disclosed. The disclosed method provides two different approaches for optimizing the delay during the CSFB procedure. In the first approach, user equipment (UE) receives a Location Area Identifier (LAI along with the Radio Access Technology (RAT) information from the network (LTE network). The UE uses the received RAT information from the network for switching to the target Radio Access Network (RAN) without informing to the LTE network. In another approach, the UE obtains the RAT information by performing a background scan in idle mode, when the UE receives LAI without RAT information from the network.

公开(公告)号：US09712983B2

公开(公告)日：2017-07-18

申请号：US14678157

申请日：2015-04-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Prasad Basavaraj Dandra ,  Pavan Kumar Devarayanigari ,  Ravi Krishna Hari Haran Sripada ,  Vijay Ganesh Surisetty ,  Nitesh Pushpak Shah ,  Jaya Prakash Sivapuram

IPC: H04L12/28 ,  H04W4/08 ,  H04W48/16 ,  H04W76/00 ,  H04W48/18

CPC classification number: H04W4/08 ,  H04W48/16 ,  H04W48/18 ,  H04W76/40

Abstract: A method and user equipment for handling a Public Land Mobile Network (PLMN) selection in a mobile communication network is provided. The method includes obtaining, by a User Equipment (UE), a PLMN list of one or more Radio Access Technologies (RATs) comprising a list of available PLMNs, when the UE performs a Manual Closed Subscriber Group (CSG) selection, initiating a PLMN list validation timer, and reusing the previously obtained PLMN list, when at least one predefined event is triggered and the PLMN list validation timer is running. The at least one predefined event comprises at least one of Home Public Land Mobile Network (HPLMN) timer expiration, a manual PLMN selection, the manual CSG selection, and autonomous CSG selection.