公开(公告)号：US11457391B2

公开(公告)日：2022-09-27

申请号：US17066371

申请日：2020-10-08

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04W36/18 ,  H04W76/20 ,  H04W36/02 ,  H04W76/14 ,  H04W76/27 ,  H04W8/22 ,  H04W24/08 ,  H04W52/02 ,  H04W80/02 ,  H04W74/08 ,  H04W80/08

Abstract: The present application discloses a method and eNB equipment for supporting seamless handover. The method comprises the following steps of: receiving, by a target eNB, random access information or an RRC connection reconfiguration completion message from a UE; transmitting, by the target eNB, a data transmission stopping indication message to a source eNB; and, stopping, by the source eNB, transmitting downlink data to the UE, and/or stopping, by the source eNB, receiving uplink data from the UE. The present invention further provides several other methods and eNB equipments for supporting seamless handover. By the methods for supporting seamless handover provided by the present invention, the delay of data transmission and the unnecessary data transmission or unnecessary data monitoring of a source eNB can be avoided, the waste of resources and the power consumption can be reduced, and the missing and duplication transmission of data can be avoided.

公开(公告)号：US11356918B2

公开(公告)日：2022-06-07

申请号：US16323901

申请日：2017-08-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Hong Wang ,  Qi Li ,  Xiaowan Ke

IPC: H04W36/32 ,  H04W48/18 ,  H04W24/10 ,  H04W68/00 ,  H04W68/04 ,  H04W8/08 ,  H04W60/04 ,  H04W8/22 ,  H04W48/04 ,  H04W88/08

Abstract: A communication method and system for controlling and paging a user equipment (UE) are provided. The method includes receiving mobility level information of a UE, and performing at least one of handover control, measurement control, or paging for the UE according to mobility level information of the UE.

公开(公告)号：US11190968B2

公开(公告)日：2021-11-30

申请号：US16623201

申请日：2018-06-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaowan Ke ,  Lixiang Xu ,  Hong Wang

IPC: H04W28/02 ,  H04W76/12 ,  H04W76/15 ,  H04W76/30

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a method for connection set-up and corresponding master base station and secondary base station. The method includes: transmitting a secondary base station setup request message to a secondary base station, and receiving a secondary base station setup response message which comprises mapping information from a quality of service (QoS) flow to a data radio bearer (DRB). The present disclosure further provides a method of requesting a secondary cell group (SCG) configuration and corresponding master base station and secondary base station. The method includes: transmitting a secondary base station modification request message for requesting SCG configuration information, the secondary base station modification request message carrying indication information for indicating that a master base station needs to obtain SCG configuration information; and receiving a secondary base station modification response message transmitted by the secondary base station, the secondary base station modification response message carrying the SCG configuration information. The present disclosure further provides methods and devices for controlling a session operation and a corresponding computer readable medium.

公开(公告)号：US11147111B2

公开(公告)日：2021-10-12

申请号：US16902621

申请日：2020-06-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Xiaowan Ke ,  Hong Wang

IPC: H04W36/18 ,  H04W36/04 ,  H04W76/11 ,  H04W36/00 ,  H04W36/08 ,  H04W36/38 ,  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：US11140601B2

公开(公告)日：2021-10-05

申请号：US16312604

申请日：2017-06-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaowan Ke ,  Hong Wang ,  Lixiang Xu

IPC: H04W36/22 ,  H04W36/12 ,  H04W68/00 ,  H04W48/08

Abstract: A data transmission supporting method and apparatus, which includes obtaining, by a first node, access information of a UE; transmitting, by the first node, data information associated with the UE or data of the UE buffered in the first node to a second radio access network node accessed by the UE according to the access information. According to the present disclosure, service continuity requirements in the further mobile communication network can be effectively adapted.

公开(公告)号：US11039343B2

公开(公告)日：2021-06-15

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 ,  H04W24/02 ,  H04W36/14

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：US10805847B2

公开(公告)日：2020-10-13

申请号：US16383932

申请日：2019-04-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaowan Ke ,  Lixiang Xu ,  Hong Wang

IPC: H04W36/00 ,  H04W28/02 ,  H04W84/12 ,  H04W84/04

Abstract: A method for controlling a wireless local area network (WLAN) bearer is provided. The method includes a base station receives information including at least one of WLAN information of a WLAN node, WLAN aggregation response information, WLAN aggregation update response information, WLAN aggregation update information and a WLAN capability of UE. According to the received information, the base station instructs the UE to perform traffic steering between an E-UTRAN and the WLAN, or instructs the UE to perform control processing for the EUTRAN and WLAN aggregation. By using the present disclosure, efficiency of WLAN bearer control is improved.

公开(公告)号：US10595243B2

公开(公告)日：2020-03-17

申请号：US15322042

申请日：2015-07-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang Xu ,  Xiaowan Ke ,  Hong Wang

IPC: H04W36/28 ,  H04W36/00 ,  H04W36/08 ,  H04W76/11 ,  H04W36/18 ,  H04W36/38 ,  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：US10517135B2

公开(公告)日：2019-12-24

申请号：US16214815

申请日：2018-12-10

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：US10455489B2

公开(公告)日：2019-10-22

申请号：US15277466

申请日：2016-09-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Huarui Liang ,  Hong Wang ,  Lixiang Xu ,  Xiaoqiang Li

IPC: H04W48/00 ,  H04W48/02 ,  H04W48/08 ,  H04W48/16 ,  H04W48/20 ,  H04W76/16 ,  H04W76/11 ,  H04W8/08 ,  H04L29/12 ,  H04W80/04 ,  H04W84/04

Abstract: A method for supporting packet data network (PDN) gateway (GW) selection, comprising the following steps of: receiving by a mobility management entity (MME) a local route optimization service request information; searching by the MME the internet protocol (IP) address of a PDN GW which supports local route optimization according to the IP address of a PDN GW on home evolved node B (HeNB) (PDN GWh); sending by the MME a bearer request establishment message to the PDN GWh. The method of the present invention can ensure core network equipment to find PDN GW correctly while HeNB system supports local route optimization.