公开(公告)号：US20200187063A1

公开(公告)日：2020-06-11

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 ,  H04W36/38 ,  H04W36/18 ,  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：US20200067689A1

公开(公告)日：2020-02-27

申请号：US16673676

申请日：2019-11-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hong WANG ,  Lixiang XU ,  Huarui LIANG

IPC: H04L5/00

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：US20200029204A1

公开(公告)日：2020-01-23

申请号：US16587928

申请日：2019-09-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hong WANG ,  Lixiang XU ,  Xiaowan KE

IPC: H04W8/26 ,  H04W76/20 ,  H04W76/12 ,  H04W76/22 ,  H04W76/11 ,  H04W76/27 ,  H04W24/10 ,  H04W74/08 ,  H04W74/00

Abstract: Disclosed is a method for access of a user equipment (UE) in a communication system, which includes the UE, a base station, and a network node. The base station carries out radio link control (RLC) layer and media access control (MAC) layer functions. The network node carries out packet data convergence protocol (PDCP) layer, radio resource control (RRC) layer, and non-access (NAS) layer functions. The method includes the network node receiving a non-access stratum identifier of the UE or a random number generated by the UE sent from the UE through a RRC message, and the network node sending the received non-access stratum identifier or the random number to the base station, for the base station to set a UE collision dismiss identifier.

公开(公告)号：US20190289658A1

公开(公告)日：2019-09-19

申请号：US16429342

申请日：2019-06-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang XU ,  Hong WANG

IPC: H04W76/15 ,  H04W36/00 ,  H04W36/38 ,  H04W72/04 ,  H04W76/11

Abstract: A method for data forwarding in a small cell system comprises: sending by a master base station (MeNB) to a target secondary base station (SeNB) information of a source SeNB or a source SeNB cell where a user equipment (UE) is located; determining by the target SeNB whether a direct data forwarding is feasible; notifying, by the target SeNB, the MeNB whether the direct data forwarding is feasible; and determining by the MeNB whether it is a direct data forwarding or an indirect data forwarding. The method for data forwarding provided in the present application may support both the direct data forwarding and the indirect data forwarding based on actual situation of the network, reduce data loss and failure of data forwarding, and improve the efficiency of data forwarding.

公开(公告)号：US20190288802A1

公开(公告)日：2019-09-19

申请号：US16429681

申请日：2019-06-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shichang ZHANG ,  Yingyang LI ,  Jingxing FU ,  Yi WANG ,  Chengjun SUN ,  Lixiang XU

IPC: H04L1/18

Abstract: An apparatus and method for feeding back hybrid automatic repeat request-acknowledgement (HARQ-ACK) information are provided. The apparatus and method include user equipment (UE) that first receives a downlink grant (DL-GRANT) which schedules downlink HARQ transmission in a time-frequency bundling window corresponding to an uplink subframe used for feeding back HARQ-ACK, obtains a DL downlink assignment index (DL DAI) in the DL-GRANT, and determines a mapping value of each DL DAI. Then, according to the mapping value of the corresponding DL DAI, the HARQ-ACK bit of each HARQ feedback unit is mapped to a corresponding bit of a feedback bit sequence. According to the method and apparatus provided by the present disclosure, useless HARQ-ACK bits may be effectively removed, and efficiency for feeding back HARQ-ACK may be increased. As such, a downlink peak rate of a UE is ensured.

公开(公告)号：US20190246370A1

公开(公告)日：2019-08-08

申请号：US16340875

申请日：2018-01-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang XU ,  Hong WANG ,  Xiaowan KE

IPC: H04W60/04 ,  H04W48/16 ,  H04W80/10 ,  H04W88/10 ,  H04W48/18 ,  H04W36/14

CPC classification number: H04W60/04 ,  H04W36/14 ,  H04W48/02 ,  H04W48/16 ,  H04W48/18 ,  H04W80/10 ,  H04W88/10

Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.There is provided a method and apparatus for data transport control between wireless network systems, the method comprises: determining, by a first node, whether a predetermined condition is satisfied; and transmitting, by the first node, at least one of data transport command information and user equipment access information when the predetermined condition is satisfied.

公开(公告)号：US20190222291A1

公开(公告)日：2019-07-18

申请号：US16324727

申请日：2017-08-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hong WANG ,  Lixiang XU ,  Xiaowan KE

IPC: H04B7/06 ,  H04W36/00 ,  H04W36/06 ,  H04W24/10 ,  H04W88/08

CPC classification number: H04B7/0695 ,  H04B7/005 ,  H04B7/0619 ,  H04W16/28 ,  H04W24/10 ,  H04W36/00 ,  H04W36/0058 ,  H04W36/0085 ,  H04W36/06 ,  H04W88/085

Abstract: In accordance with an aspect of the present disclosure, a method for supporting movement of a user equipment (UE) by a central unit (CU) in wireless communications is provided. The method comprises transmitting beam measurement configuration information to the UE; and receiving information of a candidate beam transmitted by a distributed unit (DU); wherein the information of the candidate beam is obtained by the DU based on a beam measurement result, and wherein the beam measurement result is obtained by the UE through measuring one or more beam signals based on the beam measurement configuration information.

公开(公告)号：US20190159099A1

公开(公告)日：2019-05-23

申请号：US16091417

申请日：2017-04-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lixiang XU ,  Xiaowan KE ,  Hong WANG

IPC: H04W36/30 ,  H04W36/00 ,  H04W76/19 ,  H04W36/08

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). According to an embodiment of the present disclosure, a circuit switched fallback (CSFB) method is provided. The method comprising: receiving, by a first base station, a user equipment (UE) context modification request message from a mobility management entity (MME), wherein the UE context modification request message includes a CSFB indicator; receiving, by the first base station, a radio link failure (RLF) indication message from a second base station; and determining, by the first base station, whether to trigger a handover procedure.

公开(公告)号：US20190116527A1

公开(公告)日：2019-04-18

申请号：US16090556

申请日：2017-03-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaowan KE ,  Hong WANG ,  Lixiang XU

IPC: H04W36/00 ,  H04W76/16 ,  H04W36/38

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 invention provides a method for controlling Wireless Local Area Network (WLAN) aggregation and an associated equipment. The method comprises the following steps of: acquiring, by a first radio access network node, WLAN information about a User Equipment (UE); and, controlling, by the first radio access network node, WLAN aggregation for the UE according to the acquired WLAN information. A second radio access network node decides whether to maintain a WT and/or whether to establish WLAN aggregation for the UE when the UE moves to a first radio access network; and, the second radio access network node transmits information about whether to maintain the WT and/or indication information about whether to establish the WLAN aggregation for the UE. The WT receives UE context reference information transmitted by the first radio access network node; and, the WT indexes a UE context according to the received UE context reference information. With the present invention, the WLAN aggregation performance in a UE mobility scenario can be improved.

公开(公告)号：US20190028936A1

公开(公告)日：2019-01-24

申请号：US16140321

申请日：2018-09-24

Applicant: Samsung Electronics Co., Ltd

Inventor： Lixiang XU ,  Hong Wang ,  Huarui Liang

IPC: H04W36/00 ,  H04W76/19

CPC classification number: H04W36/0055 ,  H04W36/0033 ,  H04W76/19 ,  H04W84/045

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.