公开(公告)号：US10601792B1

公开(公告)日：2020-03-24

申请号：US16676033

申请日：2019-11-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sun-Heui Ryoo ,  Soeng-Hun Kim ,  Jung-Soo Jung ,  Jung-Min Moon ,  Anshuman Nigam ,  Sung-Jin Lee

IPC: H04M1/66 ,  H04M1/68 ,  H04M3/16 ,  H04L29/06 ,  H04W12/04 ,  H04W12/02 ,  H04W36/00

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). A method for communicating by a user equipment with a macro cell base station and a small cell base station in a communication system is provided. The method comprises applying a first base station security key to a first communication link with the macro cell base station; generating a second base station security key to be used for a second communication link with the small cell base station based on the first base station security key; applying the second base station security key to the second communication link with the small cell base station; and communicating through at least one of the first communication link and the second communication link.

公开(公告)号：US10476638B2

公开(公告)日：2019-11-12

申请号：US15990047

申请日：2018-05-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Byoung-Jae Bae ,  Soeng-Hun Kim ,  Sung-Man Han ,  Jun-Sung Lee ,  Gert-Jan Van Lieshout

IPC: H04L1/18

Abstract: An operating method and an apparatus according to data duplicate retransmission in a mobile communication system are provided. A method of a User Equipment (UE) according to data duplicate retransmission in a mobile communication system includes storing a Media Access Control Protocol Data Unit (MAC PDU) received from an Evolved Node B (ENB) in a soft buffer, decoding the MAC PDU, determining whether the decoding is a first successful decoding of data of the corresponding soft buffer, and determining whether to forward the decoded MAC PDU to an upper layer according to the determination result.

公开(公告)号：US10448428B2

公开(公告)日：2019-10-15

申请号：US14879007

申请日：2015-10-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Woo-Seong Kim ,  Soeng-Hun Kim ,  Himke Van Der Velde

IPC: H04W74/08 ,  H04W56/00 ,  H04L5/00 ,  H04W36/00 ,  H04W74/00 ,  H04W36/08 ,  H04W84/04

Abstract: The present disclosure relates to a method and apparatus for performing random access in a user equipment for a small cell e-NB with a small cell service area in heterogeneous e-NB cell carrier integration (dual connectivity or inter-eNB carrier aggregation) in mobile communication systems. In accordance with an aspect of the present disclosure, a method for performing random access in a mobile communication system is provided. The method includes receiving a configuration request message for configuring a Serving Cell Group (SCG) from a second eNB located in a service area of a first eNB through the first eNB; configuring an SCG cell based on the configuration request message, and sending a configuration response message in response to the configuration request message to the second eNB through the first eNB; and performing random access if there is uplink data present on a logic channel (LCH) relocated into the SCG cell.

公开(公告)号：US10356821B2

公开(公告)日：2019-07-16

申请号：US14879020

申请日：2015-10-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Woo-Seong Kim ,  Soeng-Hun Kim ,  Himke Van Der Velde

IPC: H04W74/08 ,  H04W56/00 ,  H04L5/00 ,  H04W36/00 ,  H04W74/00 ,  H04W36/08 ,  H04W84/04

Abstract: The present disclosure relates to a method and apparatus for performing random access in a user equipment for a small cell e-NB with a small cell service area in heterogeneous e-NB cell carrier integration (dual connectivity or inter-eNB carrier aggregation) in mobile communication systems. In accordance with an aspect of the present disclosure, a method for performing random access in a mobile communication system is provided. The method includes receiving a configuration request message for configuring a Serving Cell Group (SCG) from a second eNB located in a service area of a first eNB through the first eNB; configuring an SCG cell based on the configuration request message, and sending a configuration response message in response to the configuration request message to the second eNB through the first eNB; and performing random access if there is uplink data present on a logic channel (LCH) relocated into the SCG cell.

公开(公告)号：US20190191482A1

公开(公告)日：2019-06-20

申请号：US16272361

申请日：2019-02-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Mangesh Abhimanyu INGALE ,  Sudhir Kumar Baghel ,  Soeng-Hun Kim

IPC: H04W76/28 ,  H04L5/14 ,  H04B7/26 ,  H04W72/04

CPC classification number: H04W76/28 ,  H04B7/2615 ,  H04L5/1476 ,  H04W72/0406 ,  H04W72/042

Abstract: A method and an apparatus are provided for monitoring a physical downlink control channel (PDCCH) by a user equipment (UE) in a wireless communication system. The UE receives a system information block (SIB) from a base station. The UE identifies downlink (DL) subframes indicated by a first time division duplex (TDD) uplink (UL)/DL configuration in the SIB. The UE monitors the PDCCH transmitted from the base station on at least one DL subframe included in an active time of a discontinuous reception (DRX) cycle among the DL subframes. The UE obtains information about a second TDD UL/DL configuration from the monitored PDCCH. The UE monitors the PDCCH using the second TDD UL/DL configuration. The active time includes a duration corresponding to a number of at least one consecutive DL subframe at a beginning of the DRX cycle.

公开(公告)号：US20190140787A1

公开(公告)日：2019-05-09

申请号：US16241396

申请日：2019-01-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Soeng-Hun Kim ,  Himke Van Der Velde

IPC: H04L1/18

CPC classification number: H04L1/1874 ,  H04L1/1819 ,  H04L1/1887 ,  H04L1/1893

Abstract: A signal transmission method and apparatus of a user equipment for a mobile communication system is provided for improving data transmission reliability and efficiency by transmitting data based on precise discrimination of the uplink transmission resource assignment messages indicative of initial transmission and retransmission. A signal transmission method of a user equipment for a mobile communication system receives an uplink transmission resource assignment message from a base station determines whether a Hybrid Automatic Repeat reQuest (HARQ) buffer is empty, and when the HARQ buffer is empty, transmits to the base station a Media Access Control Protocol Data Unit (MAC PDU) generated with reference to information contained in the uplink transmission resource assignment message.

公开(公告)号：US10225834B2

公开(公告)日：2019-03-05

申请号：US14835129

申请日：2015-08-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyeong-In Jeong ,  Himke Van Der Velde ,  Soeng-Hun Kim ,  Joon-Young Cho

IPC: H04W4/00 ,  H04W72/04 ,  H04W48/12 ,  H04L29/06

Abstract: Methods and apparatuses are provided for receiving system information by a user equipment (UE). System information including first partial bits of a system frame number (SFN) and bandwidth information are received at a first subframe of a radio frame. The system information is identical during a broadcast channel transmission period. Second partial bits of the SFN are acquired having a different value in each of radio frames within the broadcast channel transmission period.

公开(公告)号：US10211996B2

公开(公告)日：2019-02-19

申请号：US15645531

申请日：2017-07-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Soeng-Hun Kim ,  Kyeong-In Jeong

IPC: H04H20/71 ,  H04L12/18 ,  H04W36/06 ,  H04W72/00 ,  H04W74/08 ,  H04W4/02

Abstract: The present disclosure relates to a method and device for receiving a multimedia broadcast multicast service (MBMS) in a mobile communication system. The method for receiving the MBMS of a terminal in the mobile communication system according to an embodiment of the present disclosure is characterized in that it includes: determining whether service area ID (SAI) information on a serving cell is broadcast during the MBMS; receiving the SAI information on the serving cell when it is determined that the SAI information is broadcast; determining, by using the received SAI information of the serving cell, whether an SAI of the MBMS matches the SAI of the serving cell; and changing the cell reselection priority of the frequency of the serving cell to the highest priority if it is determined that the SAI of the MBMS matches the SAI of the serving cell.

公开(公告)号：US20180376432A1

公开(公告)日：2018-12-27

申请号：US16121262

申请日：2018-09-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Soeng-Hun Kim ,  Gert-Jan Van Lieshout ,  Kyeong-In Jeong ,  Youn-Hyoung Heo

IPC: H04W52/24 ,  H04W72/04 ,  H04W52/34 ,  H04W52/36 ,  H04L12/26 ,  H04W88/02 ,  H04W88/08 ,  H04W88/12

Abstract: A method and apparatus are provided for transmitting power headroom information by a terminal in a mobile communication system. The method includes receiving, by the terminal, information on an allocated uplink transmission resource; determining whether a path loss has changed more than a threshold, after transmitting last power headroom information, when the terminal has the allocated uplink transmission resource; if the path loss has changed more than the threshold when the terminal has the allocated uplink transmission resource, determining a transmission of the power headroom information; and transmitting an uplink packet including the power headroom information using the allocated uplink transmission resource. The power headroom information is obtained based on a difference between a maximum transmission power of the terminal and a transmission power of the terminal.

公开(公告)号：US10091686B2

公开(公告)日：2018-10-02

申请号：US14139154

申请日：2013-12-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Soeng-Hun Kim ,  Sung-Ho Choi ,  O-Sok Song ,  Gert Jan Van Lieshout ,  Himke Van Der Velde

IPC: H04L12/24 ,  H04W28/02 ,  H04L1/16 ,  H04L1/18 ,  H04W36/02

Abstract: A method for transmitting packet data units Packet Data Units (PDUs) at a PDU transmitter in a communication system is provided. The method includes transmitting a first PDU comprising a PDU header and a data portion, receiving Negative Acknowledgement NACK information for the first PDU, segmenting the first PDU to form one or more PDU segments if a size of a second PDU for retransmission is smaller than a size of the first PDU, wherein each of the one or more PDU segment comprises a PDU segment header and a data portion, and transmitting the one or more PDU segment to a PDU receiver.