公开(公告)号：US20200314705A1

公开(公告)日：2020-10-01

申请号：US16902621

申请日：2020-06-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang XU ,  Xiaowan KE ,  Hong WANG

IPC: H04W36/00 ,  H04W36/18 ,  H04W36/38 ,  H04W76/11 ,  H04W36/08

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：US20200229044A1

公开(公告)日：2020-07-16

申请号：US16834469

申请日：2020-03-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang XU ,  Hong WANG ,  Huarui LIANG

IPC: H04W36/00

Abstract: A method for supporting indication of a failure event to a source access system is provided. The method includes notifying, by the source access system, information of a source cell to a target access system, routing, by the target access system, a message to the base station or the base station controller of the source access through a core network by use of the information of the source cell received from the source access system when the target access system needs to transmit a message to the source access system. By use of the method provided by the present disclosure, a problem of mobility robustness optimization (MRO) among different radio access technology (RAT) may be notified to the source access system, so as to avoid impact for a terminal, reduce operator configuration.

公开(公告)号：US20200092760A1

公开(公告)日：2020-03-19

申请号：US16693841

申请日：2019-11-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang XU ,  Hong WANG ,  Xiaowan KE

IPC: H04W36/00 ,  H04W76/34 ,  H04W76/20 ,  H04L5/00

Abstract: The present application discloses a switch supporting method comprising: an eNB sends a path switching request message to an MME to notify the MME of information on a bearer remaining unchanged; the MME reserves the bearer remaining unchanged and does not trigger a deactivation process for the bearer remaining unchanged; the MME sends a modify bearer request message to an SGW. With the present application, data loss can be avoided and service continuity is ensured when a UE moves in a small cell scenario.

公开(公告)号：US20200037154A1

公开(公告)日：2020-01-30

申请号：US16587682

申请日：2019-09-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hong WANG ,  Huarui LIANG ,  Lixiang XU

IPC: H04W12/04 ,  H04W72/04

Abstract: The present application discloses a method for configuring and transmitting a key, which includes that: a) a serving cell (PCell) of UE determines a key (KeNB) used by a SCell and transmits the KeNB to the SCell; and b) the PCell transmits configuration information for configuring the SCell to the UE after receiving a response message from the SCell, and receives a response message from the UE. Or, the method includes that: a SCell of UE transmits a cell key request to an MME and receives key information from the MME; and the SCell transmits the key information received from the MME to the UE, and receives a response message from the UE. By the present application, data of the SCell is transmitted after being encrypted, so as to avoid a case that the data is decoded by other users, and further guarantee the security of the data.

公开(公告)号：US20190110331A1

公开(公告)日：2019-04-11

申请号：US16214815

申请日：2018-12-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang XU ,  Xiaowan KE ,  Hong WANG

IPC: H04W76/25 ,  H04W36/00 ,  H04W76/18

Abstract: A method for transmitting a handover report and for transmitting a radio link failure (RLF) report are provided. The method includes obtaining, by a target base station, at least one of location information of a source cell or location information of a user equipment (UE) history cell during a handover procedure, and transmitting, by the target base station, the handover report to at least one of a source base station or to a base station where the UE history cell is located, according to the obtained at least one of location information of the source cell or the location information of the UE history cell, wherein the handover report including at least one of an unnecessary handover report, a too early handover report, or a handover to wrong cell report.

公开(公告)号：US20190089517A1

公开(公告)日：2019-03-21

申请号：US16193821

申请日：2018-11-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yu QIU ,  Lixiang XU ,  Xiaowan KE ,  Hong WANG

IPC: H04L5/00 ,  H04W16/32 ,  H04W92/20

CPC classification number: H04L5/0098 ,  H04L5/001 ,  H04W16/32 ,  H04W92/20

Abstract: The present invention relates to the technical field of radio communications, and particularly to a method and apparatus for processing activation/deactivation of inter-eNodeB carrier aggregation. Embodiments of the present invention provide a method for processing activation/deactivation of inter-eNodeB carrier aggregation, comprising the steps of: receiving, by UE, an MAC CE for activation/deactivation of an SCell sent by a master eNodeB or a secondary eNodeB; determining, by the UE, the corresponding SCell; and performing, by the UE, activation/deactivation to the corresponding SCell according to the indication information in the MAC CE for activation/deactivation.

公开(公告)号：US20190059030A1

公开(公告)日：2019-02-21

申请号：US15764513

申请日：2016-09-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang XU ,  Hong WANG ,  Xiaowan KE

IPC: H04W36/08 ,  H04W36/00 ,  H04W76/30 ,  H04W36/22

Abstract: The present disclosure discloses a method for supporting release of a SIPTO bearer or a LIPA bearer in dual-connectivity architecture. The method is implemented as follows. A MeNB sends a message to a SeNB. The message contains indication information for SIPTO at local network bearer deactivation or LIPA bearer deactivation. The indication information may indicate the SeNB to notify a collocated LGW of releasing PDN connection of SIPTO at local network or the PDN connection of LIPA. After receiving the message, the SeNB removes radio and control plane related resources associated to the UE context or the SIPTO at local network bearer or the LIPA bearer, and if the message contains the indication information for SIPTO@LN bearer deactivation or LIPA bearer deactivation, sends an internal signaling to the collocated LGW to indicate the collocated LGW to release the PDN connection of the SIPTO at local network or the PDN connection of the LIPA. The SeNB is a SeNB supporting functions of the LGW that supports operations of the SIPTO at local network or the operations of the LIPA. By the method of the present disclosure, the SIPTO bearer or the LIPA bearer in the dual-connectivity architecture can be released, thereby avoiding inaccurate operations in an access network, ensuring that the SIPTO bearer or the LIPA bearer can be released duly and accurately, and avoiding inaccurate release of the SIPTO bearer or the LIPA bearer.

公开(公告)号：US20180132303A1

公开(公告)日：2018-05-10

申请号：US15864253

申请日：2018-01-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang XU ,  Xiaowan Ke ,  Hong Wang

IPC: H04W36/00

CPC classification number: H04W76/25 ,  H04W36/0055 ,  H04W36/0058 ,  H04W36/00837 ,  H04W36/245 ,  H04W36/32 ,  H04W76/18

Abstract: A method for transmitting a handover report and for transmitting a radio link failure (RLF) report are provided. The method includes obtaining, by a target base station, at least one of location information of a source cell or location information of a user equipment (UE) history cell during a handover procedure, and transmitting, by the target base station, the handover report to at least one of a source base station or to a base station where the UE history cell is located, according to the obtained at least one of location information of the source cell or the location information of the UE history cell, wherein the handover report including at least one of an unnecessary handover report, a too early handover report, or a handover to wrong cell report.

公开(公告)号：US20180014235A1

公开(公告)日：2018-01-11

申请号：US15711485

申请日：2017-09-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaowan KE ,  Gert Jan VAN LIESHOUT ,  Lixiang XU ,  Hong WANG

IPC: H04W36/08 ,  H04W8/24 ,  H04W76/02 ,  H04W48/02 ,  H04W12/08 ,  H04W12/06 ,  H04W40/36 ,  H04W48/16 ,  H04W88/08 ,  H04W8/20

CPC classification number: H04W36/08 ,  H04W8/20 ,  H04W8/24 ,  H04W12/06 ,  H04W12/08 ,  H04W40/36 ,  H04W48/02 ,  H04W48/16 ,  H04W76/14 ,  H04W88/08

Abstract: The present disclosure provides a method for supporting UE access control. A base station is informed by a ProSe Function via a MME or informed by the MIME of information indicating whether a UE is authorized for a D2D service. The base station performs an access control to the UE according to the information indicating whether the UE is authorized for the D2D service. The present disclosure further provides a method in which a source base station informs a target base station of the information indicating whether the UE is authorized for a D2D service. The target base station performs an access control according to the information.

公开(公告)号：US20170164243A1

公开(公告)日：2017-06-08

申请号：US15439259

申请日：2017-02-22

Applicant: Samsung Electronics Co., Ltd. ,  BEIJING SAMSUNG TELECOM R & D CENTER

Inventor： Lixiang XU ,  Hong WANG ,  Huarui LIANG

IPC: H04W36/00 ,  H04W36/08

CPC classification number: H04W36/0033 ,  H04W36/0061 ,  H04W36/08 ,  H04W84/045 ,  H04W92/20

Abstract: A method for handover of User Entity (UE) by a source Base Station (BS) is provided. The method includes determining whether to handover the UE using an X2 interface, transmitting a handover request message to a target BS, the handover request message including Closed Subscriber Group (CSG) information of the target BS, and receiving a handover request acknowledgement message from the target BS, wherein the determining of whether to handover the UE using the X2 interface includes, if there is the X2 interface between the source BS and the target BS, and if the target BS does not support a CSG or the target BS supports a same CSG supported by the source BS, determining to perform the handover of the UE using the X2 interface, and obtaining the CSG information of the target BS through an X2 interface set up procedure.