公开(公告)号：US10791486B1

公开(公告)日：2020-09-29

申请号：US16882306

申请日：2020-05-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Hong Wang ,  Huarui Liang

IPC: H04W36/00 ,  H04W76/19 ,  H04W84/04

Abstract: A method for supporting fast recovery of a User Equipment (UE) includes performing, by a serving base station, UE context synchronization for one or more other base stations in a related small cell cluster when a UE accesses the serving base station, performing, by a base station that the UE performs a radio resource control (RRC) connection re-establishment, the RRC connection re-establishment for the UE according to UE context saved in a synchronization process. The present also discloses another method and system for supporting UE fast recovery. By applying the technical solution disclosed by the present disclosure, when the UE moves in a small cell scenario, the UE can be recovered quickly in the case of a failure, so as to avoid the UE returns to an idle mode, avoid data loss, guarantee business continuity, and improve UE experience.

公开(公告)号：US10694432B1

公开(公告)日：2020-06-23

申请号：US16790065

申请日：2020-02-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Xiaowan Ke ,  Hong Wang

IPC: H04W36/00 ,  H04W16/26 ,  H04W36/38 ,  H04W36/18 ,  H04W76/11 ,  H04W36/08 ,  H04W76/15

Abstract: An embodiment of the present disclosure may provide an inter-MeNB handover method in a small cell system, including: making, by a source MeNB and/or target MeNB, a determination as to whether to maintain a SeNB when handover is performed; and triggering different handover processes according to a result of the determination as to whether to maintain the SeNB. Another embodiment of the present disclosure may further provide an inter-MeNB handover device in a small cell system. With the inter-MeNB handover method and device in a small cell system provided by the present disclosure, unnecessary deletion and re-establishment of the bearers at the SeNB for the UE may be reduced. False bearer deletion may be avoided and data forwarding may be reduced. Furthermore, the SeNB may be maintained according to network deployment and SGW re-selection may be supported. Therefore, system capacity and transmission speed of the data may be improved.

公开(公告)号：US10681565B2

公开(公告)日：2020-06-09

申请号：US13724264

申请日：2012-12-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Hong Wang

IPC: H04W76/19 ,  H04W24/00 ,  H04W24/04

Abstract: The present invention discloses a method for detecting a cause for a Radio Link Failure (RLF) or handover failure is provided. The method includes when a User Equipment (UE) enters a connection mode after encountering RLF or handover failure, sending a RLF report that the UE encounters RLF or handover failure to a base station; determining, by the base station, a cause for RLF or handover failure according to the RLF report, if it is determined that the cause for RLF or handover failure is a problem of Mobility Robustness Optimization (MRO) or a problem of coverage, when it is a problem of MRO, sending, by the base station, a MRO report to a base station at which a cell which triggers handover for the last time is located.

公开(公告)号：US10594832B2

公开(公告)日：2020-03-17

申请号：US15555355

申请日：2016-03-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shichang Zhang ,  Lixiang Xu ,  Yingyang Li

IPC: H04L29/08 ,  H04W76/14 ,  H04W4/70 ,  H04W8/00 ,  H04W88/04

Abstract: A method for establishing a relay connection in a device to device (D2D) broadcast communication-based relay network is provided. Relay node user equipment (RNUE) transmits a relay broadcast (RBC) message based on indicator of a Donor evolved Node B (DeNB), detects a relay request (RRQ) message coming from the UU in corresponding resources, confirms the relay connection with a corresponding UU by using a relay response (RRP) message. Based on the received RBC message, standard definition, or pre-configuration, the UU may determine transmission resources of the RRQ message, so as to establish a connection with the RNUE.

公开(公告)号：US10582428B2

公开(公告)日：2020-03-03

申请号：US14040526

申请日：2013-09-27

Applicant: Samsung Electronics Co., Ltd

Inventor： Lixiang Xu ,  Hong Wang ,  Huarui Liang

IPC: H04W36/00 ,  H04W84/04

Abstract: Methods and apparatuses for verifying HeNB. A method reduces and/or avoids affecting the operator's network due to the attack from HeNB, and ensures the safety of the users who have accessed the network.

公开(公告)号：US10568022B2

公开(公告)日：2020-02-18

申请号：US16551584

申请日：2019-08-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaowan Ke ,  Lixiang Xu ,  Hong Wang

IPC: H04W48/10 ,  H04W60/04 ,  H04W76/30 ,  H04W60/06 ,  H04W48/18 ,  H04W48/12 ,  H04W76/10

Abstract: The present application discloses a method for enabling a user equipment to access a radio network, a network equipment and a user equipment. A specific embodiment of the method comprises: determining, by a network equipment, whether a predetermined condition is satisfied; and if yes, the method further comprises: transmitting, by the network equipment, information indicating whether a radio network to which the network equipment belongs is isolated, such that the user equipment performs related operations. In the embodiment, the network equipment informs UE of state information about whether the radio network to which network equipments belongs is isolated or not in different ways, so that the isolated network can provide users with reliable local bearer supporting service continuity, thereby meeting communication requirements for public safety and the like.

公开(公告)号：US10560921B2

公开(公告)日：2020-02-11

申请号：US15924731

申请日：2018-03-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hong Wang ,  Xiaowan Ke ,  Lixiang Xu

IPC: H04W72/00 ,  H04L12/18 ,  H04W4/06 ,  H04W28/02 ,  H04W28/08

Abstract: Various examples provide a method for radio resources management. An MCE or a GCSE AS or a UE receives usage information of eMBMS radio resources, and adjusts radio resources in response to a determination that there is an overload state. The MCE may re-configure the eMBMS radio resources. Alternatively, the UE or the GCSE AS may establish a unicast channel for transporting a GCSE service which was transmitted on an overloaded eMBMS bearer, and release the eMBMS bearer. The technical mechanism can make effective use of radio interface resources and reduce data loss.

公开(公告)号：US10447700B2

公开(公告)日：2019-10-15

申请号：US15113984

申请日：2015-01-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Xiaowan Ke ,  Hong Wang

IPC: H04L29/06 ,  H04W16/24 ,  H04W8/06 ,  H04W8/18 ,  H04W36/04 ,  H04W36/08 ,  H04W36/00 ,  H04W84/04 ,  H04W88/08 ,  H04W64/00

Abstract: A method for controlling, charging and positioning a UE is disclosed, which includes: a master base station sending closed subscriber group (CSG) member status of the UE in a secondary cell to a secondary base station; the master base station sending a CSG identity of the secondary cell and a PLMN identity selected for the UE that serves the UE in a cell of the secondary base station to a mobility management entity (MME); the MME validating CSG member status of the UE in the secondary cell; and the MME sending the validated CSG member status to the master base station with the present application, the UE is able to properly access to the secondary cell, and access control and member validation, charging, and positioning may be performed for the UE reasonably, which improves the user experience.

公开(公告)号：US10425864B2

公开(公告)日：2019-09-24

申请号：US15550764

申请日：2016-02-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jun Wang ,  Lixiang Xu ,  Xiaoning Ma ,  Yu Qiu

IPC: H04W36/00 ,  H04W8/18 ,  H04W24/02 ,  H04W28/06 ,  H04W36/08 ,  H04W92/10 ,  H04W72/12 ,  H04W36/20 ,  H04W36/22 ,  H04W72/04

Abstract: The present application discloses a method and an apparatus for processing a UE context of a UE. In a specific embodiment of the method, a base station receives the UE context from a UE; and the base station, according to the received UE context, performs at least one of: optimizing a service strategy of the base station, optimizing a scheduling mode of the base station; and optimizing a handover procedure for the UE. The embodiment utilizes the UE context to provide the UE with services more effectively.

公开(公告)号：US10397858B2

公开(公告)日：2019-08-27

申请号：US15544846

申请日：2016-01-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaowan Ke ,  Lixiang Xu ,  Hong Wang

IPC: H04W48/10 ,  H04W60/04 ,  H04W76/30 ,  H04W48/18 ,  H04W48/12 ,  H04W76/10 ,  H04W60/06

Abstract: The present application discloses a method for enabling a user equipment to access a radio network, a network equipment and a user equipment. A specific embodiment of the method comprises: determining, by a network equipment, whether a predetermined condition is satisfied; and if yes, the method further comprises: transmitting, by the network equipment, information indicating whether a radio network to which the network equipment belongs is isolated, such that the user equipment performs related operations. In the embodiment, the network equipment informs UE of state information about whether the radio network to which network equipments belongs is isolated or not in different ways, so that the isolated network can provide users with reliable local bearer supporting service continuity, thereby meeting communication requirements for public safety and the like.