公开(公告)号：US10356610B2

公开(公告)日：2019-07-16

申请号：US14654157

申请日：2013-12-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Hong Wang

IPC: H04W8/26 ,  H04W72/04 ,  H04W16/32 ,  H04W84/04

Abstract: The present invention presents a method for small cell communications, comprising: MME transmits a message of setting up a user plane for UE to a base station in a small cell cluster of the UE, wherein the messages of setting up a user plane include information about evolved radio access bearer as well as uplink tunnel identity and address of the transport layer assigned by SGW; the base station assigns downlink TEID and address of the transport layer to the UE, and responds to the MME; the MME transmits the downlink TEID and the address of the transport layer assigned to the UE to the SGW that serves the UE, and receives a response message from the SGW. Examples of the present invention further present an MME device, a base station device, an SGW device and a small cell communication system. The above scheme presented by the present invention provides a method of supporting the architecture and data transmission of small cells, which supports quick handover between small cells, reduces data loss during the handover, avoids multi-hop data forwarding, guarantees QoS, and improves user experience and system performance.

公开(公告)号：US10313999B2

公开(公告)日：2019-06-04

申请号：US15866025

申请日：2018-01-09

Applicant: Samsung Electronics Co., Ltd. ,  Beijing Samsung Telecom R&D Center

Inventor： Bing Bu ,  Xiaoqiang Li ,  Chunying Sun ,  Hong Wang ,  Lixiang Xu ,  Yanmin Zhu

IPC: H04W60/06 ,  H04W76/32

Abstract: Disclosed is a method for detachment of a mobile set including receiving, by a service node of a communication system, a detachment request from the mobile set, transmitting, by the service node of the communication system, a delete context request message for the mobile set to a first service node of another communication system, and transmitting, by the service node, a detachment indicator to a second service node of the another communication system, wherein the service node of the communication system is different from the service node of the another communication, wherein both the service node of the communication system and the first service node of the another communication system store context information related to the mobile set, and wherein the mobile set moves between the service node of the communication system and the first service node of the another communication system without an area updating.

公开(公告)号：US10154535B2

公开(公告)日：2018-12-11

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 ,  H04W76/25 ,  H04W76/18 ,  H04W36/32 ,  H04W36/24

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：US10104595B2

公开(公告)日：2018-10-16

申请号：US15669767

申请日：2017-08-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Gert Jan Van Lieshout ,  Hong Wang

IPC: H04W36/32 ,  H04W36/00

Abstract: By the method of the present invention, the automatic adjustment of mobility parameter between different frequencies or different access systems becomes available and can be supported in the case of the self-optimization of mobile load balance and the self-optimization of mobile robustness, so as to improve the performance of mobile communication system.

公开(公告)号：US10104541B2

公开(公告)日：2018-10-16

申请号：US15675124

申请日：2017-08-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Hong Wang

IPC: H04W8/26 ,  H04W76/10 ,  H04W80/04 ,  H04L29/06 ,  H04W76/12 ,  H04L29/12 ,  H04W84/04 ,  H04W76/11

Abstract: A method and an apparatus for establishing a user plane bearer are provided. The method includes receiving a transport layer address supported by a serving gateway (SGW)/packet gateway (PGW) from a mobile management entity (MME), selecting, by a radio access network (RAN) entity, directly the appropriate transport layer address to establish the user plane bearer, or after receiving the transport layer address transmitted by the SGW/PGW, selecting, by the MME, the appropriate transport layer address to establish the user plane bearer, or reporting, by the MME, the obtained transport layer address used by the access entity to the SGW/PGW to establish the user plane bearer.

公开(公告)号：US20180213506A1

公开(公告)日：2018-07-26

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 ,  H04W28/02 ,  H04L12/18 ,  H04W4/06 ,  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：US09942804B2

公开(公告)日：2018-04-10

申请号：US14879096

申请日：2015-10-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Hong Wang ,  Huarui Liang

IPC: H04W24/00 ,  H04W36/00 ,  H04W12/06 ,  H04W24/10 ,  H04W36/08 ,  H04W36/30

CPC classification number: H04W36/0038 ,  H04W12/06 ,  H04W24/00 ,  H04W24/10 ,  H04W36/0033 ,  H04W36/0055 ,  H04W36/08 ,  H04W36/30

Abstract: A method and a system for processing a Radio Link Failure (RLF) report, where when a User Equipment (UE) encounters an RLF in a first cell controlled by a first evolved base station and selects a second cell controlled by a second evolved base station to re-establish an Radio Resource Connection (RRC), are provided. The method includes sending, by the second evolved base station, the RLF report to every corresponding evolved base station according to the PCI of the first cell having been received from the UE, where the PCI of the first cell, the PCI of a second cell, the CRNTI of the UE in the first cell, and UE authentication information are carried in the RLF report, and authenticating, by every evolved base station the UE according to the UE authentication information. Another method for processing an RLF report, and two methods for adjusting a mobile parameter, are also provided.

公开(公告)号：US09942086B2

公开(公告)日：2018-04-10

申请号：US14673115

申请日：2015-03-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Gert-Jan Van Lieshout ,  Himke Van Der Velde

IPC: H04B7/00 ,  H04L12/24 ,  H04W76/02 ,  H04W76/06 ,  H04W24/00 ,  H04W36/00 ,  H04W88/08

CPC classification number: H04L41/0654 ,  H04W24/00 ,  H04W36/00 ,  H04W36/0055 ,  H04W76/18 ,  H04W76/19 ,  H04W76/38 ,  H04W88/08

Abstract: A terminal, a Base Station (BS) and a method for detecting a cause of a Radio Link Failure (RLF) or handover failure are provided. The method includes determining whether an RLF or a handover failure occurs, performing a process of a connection re-establishment or connection establishment to enter a connection mode after encountering the RLF or the handover failure, and transmitting an RLF information report to a BS after entering the connection mode.

公开(公告)号：US20180014237A1

公开(公告)日：2018-01-11

申请号：US15543954

申请日：2016-01-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Xiaowan Ke ,  Hong Wang

IPC: H04W36/26 ,  H04W74/00 ,  H04W76/04 ,  H04W36/00 ,  H04W36/30

CPC classification number: H04W36/26 ,  H04W36/0055 ,  H04W36/0069 ,  H04W36/08 ,  H04W36/30 ,  H04W74/004 ,  H04W76/10 ,  H04W76/15 ,  H04W76/27

Abstract: The present application discloses handover methods and apparatuses. One specific embodiment of the handover method comprises receiving a handover request message from a source base station by a target base station; determining whether to add a secondary base station for setting up a dual-connectivity for a user equipment (UE) according to the handover request message; and performing a handover operation and a dual-connectivity setup operation in response to the determination of adding the secondary base station. The dual-connectivity can be set up for the UE during the handover in the embodiments.

公开(公告)号：US09736866B2

公开(公告)日：2017-08-15

申请号：US14632386

申请日：2015-02-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaowan Ke ,  Lixiang Xu ,  Hong Wang

IPC: H04W4/00 ,  H04W76/00 ,  H04W24/02

CPC classification number: H04W76/50 ,  H04W4/90 ,  H04W24/02

Abstract: A method of implementing fast recovery of public warning systems (PWSs) is provided. The method includes receiving, by a mobility management entity (MME), a first restart indication message transmitted by a home evolved nodeB (HeNB) gateway (GW), transmitting, by the MME, a second restart indication message to a cell broadcast center (CBC), the second message including an index of the HeNB and/or an index of the HeNB GW, receiving, by the MME, a warning request transmitted by the CBC, the warning request including the index of the HeNB and/or the index of the HeNB GW, and transmitting, by the MME, the warning request which is destined for the HeNB to the HeNB GW.