公开(公告)号：US20200092761A1

公开(公告)日：2020-03-19

申请号：US16694964

申请日：2019-11-25

Applicant: Samsung Electronics Co., Ltd

Inventor： Lixiang XU ,  Hong Wang ,  Huarui Liang

IPC: H04W36/00 ,  H04W76/19

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：US10469238B2

公开(公告)日：2019-11-05

申请号：US15785230

申请日：2017-10-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hong Wang ,  Lixiang Xu ,  Huarui Liang

IPC: H04L5/00 ,  H04W28/22

Abstract: A system for configuring a UE-AMBR includes a MME to send the UE-AMBR to an eNB covering the serving cell of the UE, the eNB covering the serving cell of the UE establishes a radio access bearer of the UE on at least one secondary cell. The MME sends an AMBR of the UE in the primary eNB covering the serving cell of the UE and an AMBR of the UE in a secondary eNB to the primary eNB. The primary eNB sends the AMBR of the secondary eNB to the corresponding secondary eNB. The technical solutions of the present disclosure can make total rate of all non-GBR services of the UE be not larger than the UE-AMBR when the UE has multiple S1 bearers or one S1 bearer.

公开(公告)号：US10432385B2

公开(公告)日：2019-10-01

申请号：US14773541

申请日：2014-03-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaowan Ke ,  Hong Wang ,  Lixiang Xu

IPC: H04L5/14 ,  H04W8/18 ,  H04W72/04 ,  H04W72/08 ,  H04W76/14 ,  H04W8/00

Abstract: The present application provides a method for implementing a device to device (D2D) communication between UEs, wherein a UE and a network obtain each other's capability of Proximity Service (ProSe); the UE may activate the capability of ProSe that both the UE and the network support and initiates a request for a ProSe service with another UE to the network; the network authenticates the request for the ProSe service according to subscription information for the UE's device to device communication; and the network establishes a device to device PDN bearer between the two UEs for the request for the ProSe service passing the authentication. The present application further provides a user equipment. The present application is the basis for implementing the ProSe, the application thereof can satisfy service demands of public safety communication and realize network resource optimization configuration.

公开(公告)号：US10368275B2

公开(公告)日：2019-07-30

申请号：US15887458

申请日：2018-02-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Xiaowan Ke ,  Hong Wang

IPC: H04W36/00 ,  H04W72/04 ,  H04W76/30 ,  H04W76/34 ,  H04W76/15

Abstract: The present application discloses a method for a master eNB (MeNB) handover or a secondary eNB (SeNB) handover in a small cell system, comprising: sending by a source MeNB information of a source secondary cell (Scell) to a target MeNB; sending by the target MeNB a message to the source MeNB, the message notifying the source MeNB to suspend data transmission on a bearer of the SeNB. Until a message of data transmission resuming is received, the data transmission/reception is started to continue. The method for a MeNB handover or a SeNB handover provided in the present application may reduce the reconfiguration of the bearer for the UE, avoid releasing the bearer by error, and improve the system throughput and the data rate of transmission.

公开(公告)号：US10368268B2

公开(公告)日：2019-07-30

申请号：US14910494

申请日：2014-08-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Xiaowan Ke ,  Hong Wang

IPC: H04W28/10 ,  H04W16/08 ,  H04W16/32 ,  H04W92/20 ,  H04W28/02 ,  H04W8/08 ,  H04W76/10 ,  H04W36/12 ,  H04W8/14 ,  H04W84/04

Abstract: The present disclosure discloses methods, systems and devices for supporting local breakout in a small cell architecture. A MME sends information of a local breakout bearer for a UE to a MeNB, and the MeNB determines a local home network to which the local breakout bearer belongs according to the received information. When the MeNB is to switch the local breakout bearer between different eNBs, the MeNB selects an eNB in the local home network to which the local breakout bearer belongs as a target eNB. By the present disclosure, the continuity of local breakout traffic may be ensured when a User Equipment (UE) moves in a small cell scenario, thereby avoiding data loss and improving user experiences. Further, a local breakout bearer may be released timely and reasonably, thereby saving system resources.

公开(公告)号：US20190159079A1

公开(公告)日：2019-05-23

申请号：US16254447

申请日：2019-01-22

Applicant: Samsung Electronics Co., Ltd

Inventor： Lixiang XU ,  Hong Wang ,  Huarui Liang

IPC: H04W36/00 ,  H04W76/19

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：US10292152B2

公开(公告)日：2019-05-14

申请号：US15113790

申请日：2015-01-16

Applicant: Samsung Electronics Co., Ltd

Inventor： Hong Wang ,  Lixiang Xu ,  Chengjun Sun ,  Bin Yu

IPC: H04W72/04 ,  H04L29/08

Abstract: The present disclosure discloses cache-based data transmission methods and apparatuses. The method is implemented as follows. An apparatus where a caching node is located reports a caching capability to a network side, and the caching node is configured to cache data. The network side sends a cache indicating parameter to the apparatus where the caching node is located, and maintains a data list. Wherein, the cache indicating parameter is configured to control the caching node to cache the data which has the property of high repetition probability and/or high cache utilization, and the data list is a list of the data cached in the caching node. When the caching node has cached data requested by a UE, the UE obtains the requested data from the caching node.

公开(公告)号：US10205582B2

公开(公告)日：2019-02-12

申请号：US15115629

申请日：2015-01-29

Applicant: Samsung Electronics Co., Ltd

Inventor： Yu Qiu ,  Lixiang Xu ,  Xiaowan Ke ,  Hong Wang

IPC: H04W16/32 ,  H04L5/00 ,  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：US10200912B2

公开(公告)日：2019-02-05

申请号：US15021665

申请日：2014-09-12

Applicant: Samsung Electronics Co., Ltd

Inventor： Hong Wang ,  Lixiang Xu ,  Xiaowan Ke

IPC: H04W28/08 ,  H04W76/10 ,  H04W76/12 ,  H04W84/04

Abstract: Examples of the present disclosure describe a method for setting up local breakout bearers, including: sending, by a master base station (MeNB), an IP address of a local gateway (LGW) corresponding to a neighbor base station; receiving, by the MeNB, correlation identifier information associated with the LGW; wherein the correlation identifier information comprises a tunnel number indicating a local breakout bearer is to be set up; forwarding, by the MeNB, the correlation identifier information; and setting up, by the neighbor base station, the local breakout bearer with the LGW according to the correlation identifier information. Examples of the present disclosure also describe another method for setting up local breakout bearers and a device corresponding to the method. When the technical scheme described in various examples of the present disclosure is employed, the service local breakout is supported in the small cell architecture, therefore the load on the core network backhaul can be reduced, the throughput of user data can be improved, and the data loss can be avoided.

公开(公告)号：US09986469B2

公开(公告)日：2018-05-29

申请号：US14878667

申请日：2015-10-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Hong Wang ,  Xiaowan Ke

IPC: H04W36/00 ,  H04W76/04 ,  H04W76/06 ,  H04L5/00 ,  H04W76/02

CPC classification number: H04W36/0027 ,  H04L5/0053 ,  H04W76/11 ,  H04W76/20 ,  H04W76/34

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.