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    Method and apparatus for device-to-device communication in partial network environment
    11.
    发明授权
    Method and apparatus for device-to-device communication in partial network environment 有权

    公开(公告)号：US10764852B2

    公开(公告)日：2020-09-01

    申请号：US15032480

    申请日：2014-11-10

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Chiwoo Lim ,  Hyunseok Ryu ,  Seunghoon Park

    IPC: H04W56/00 ,  H04W4/70 ,  H04J11/00 ,  H04L5/14 ,  H04W12/06 ,  H04W72/04 ,  H04W88/06

    Abstract: According to an embodiment of this disclosure, a method for transmitting and receiving a signal in a device of a mobile communication system includes steps of receiving, from a base station, a first message containing one or more of synchronization information and resource allocation information; transmitting, to other device, a second message containing the received synchronization information and resource allocation information; and receiving, from the other device, a third message for a random access based on the synchronization information and the resource allocation information. According to an embodiment of the present disclosure, even a device failing to obtain synchronization can obtain synchronization from a base station through other device, receive authentication and security related information, and thereby perform reliable D2D communication. Also, a communication efficiency can be improved by transmitting and receiving D2D related information between devices through limited resources.

    Decoding method and apparatus in system using sequentially connected binary codes
    12.
    发明授权
    Decoding method and apparatus in system using sequentially connected binary codes 有权

    公开(公告)号：US10355820B2

    公开(公告)日：2019-07-16

    申请号：US15511615

    申请日：2015-09-15

    Applicant: Samsung Electronics Co., Ltd

    Inventor： Woomyoung Park ,  Sangmin Kim ,  Chiwoo Lim

    IPC: H04L1/00 ,  H03M13/27 ,  H03M13/11 ,  H03M13/25 ,  H03M13/29 ,  H03M13/37 ,  H03M13/00 ,  H04L27/34

    Abstract: The present disclosure relates to a 5G or pre-5G communication system to be provided to support a data transmission rate higher than that of a 4-G communication system, such as LTE, and subsequent communication systems. An apparatus according to one embodiment of the present invention can comprise: a first grouping unit for performing repeated decoding by using an outer decoder and an inner decoder, and grouping, in correspondence to a decoding order, a bit stream, which is received from the outer decoder, from a receiver of a system using binary irregular repeat partial accumulate codes to the inner decoder device; an LLR symbol selection unit for calculating indices of grouped bits having the maximum probability value among the grouped bits, and selecting and outputting a predetermined number of grouped bit LLR values by using the indices of the grouped bits having the maximum probability value; an LLR symbol conversion unit for converting the grouped bit LLR values outputted from the LLR symbol selection unit into symbol LLR values, and outputting the same; a Bahl-Cocke-Jelinek-Raviv (BCJR) processing unit for performing a BCJR algorithm operation on the symbol LLR values; a bit LLR calculation unit for converting an output of the BCJR processing unit into bit LLR values; and a second bit grouping unit for grouping the bit LLR values by predetermined bit units.

    Device and method for beam management in wireless communication system
    17.
    发明授权
    Device and method for beam management in wireless communication system 有权

    公开(公告)号：US11304068B2

    公开(公告)日：2022-04-12

    申请号：US16641200

    申请日：2017-12-15

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Namkoo Kang ,  Giwon Lee ,  Jaehyun Hwang ,  Jin Park ,  Kangeun Lee ,  Chiwoo Lim

    IPC: H04W16/28 ,  H04L5/00 ,  H04W72/04

    Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th generation (4G) communication system such as long-term evolution (LTE). The present disclosure relates to beam management in a wireless communication system, and an operation method of a base station may comprise the steps of: transmitting first type reference signals; receiving feedback information on the first type reference signals; transmitting information on resources for second type reference signals, which are allocated on the basis of the feedback information, to at least one terminal; and transmitting the second type reference signals through the resources, wherein the second type reference signals are transmitted using fixed transmission beams by the base station. The present research has been conducted with the support of the “cross-departmental giga KOREA project” of the government (the ministry of science and ICT) in 2017 (No. GK17N0100, Development for mmWave-based 5G mobile communication system).

    Method and apparatus for generating codeword, and method and apparatus for recovering codeword
    18.
    发明授权
    Method and apparatus for generating codeword, and method and apparatus for recovering codeword 有权

    公开(公告)号：US10070441B2

    公开(公告)日：2018-09-04

    申请号：US15304844

    申请日：2015-04-16

    Applicant: Samsung Electronics Co., Ltd

    Inventor： Woomyoung Park ,  Sangmin Kim ,  Chiwoo Lim

    IPC: H04W72/04 ,  H04L1/00 ,  H03M13/00 ,  H03M13/25

    Abstract: Disclosed are a method and an apparatus for generating a codeword, and a method and an apparatus for recovering a codeword. An encoder calculates the number of punctured symbol nodes among symbol nodes included in a codeword, punctures symbol nodes located at even or odd number positions among the symbol nodes included in the codeword, calculates the number of symbol nodes which need to be additionally punctured on the basis of the calculated number of the symbol nodes to be punctured, classifies the symbol nodes, which need to be additionally punctured, into one or more punctured node groups on the basis of the calculated number of symbol nodes which need to be punctured, determines the locations on the codeword where the one or more punctured node groups are to be arranged, and punctures the symbol nodes included in the codeword which belong to the punctured node groups according to the determined locations. A transmission unit transmits the codeword.

    Method for performing D2D discovery and terminal using same
    20.
    发明授权
    Method for performing D2D discovery and terminal using same 有权

    公开(公告)号：US09848316B2

    公开(公告)日：2017-12-19

    申请号：US14904306

    申请日：2014-07-10

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sangkyu Baek ,  Seunghoon Park ,  Kyungkyu Kim ,  Hyunseok Ryu ,  Chiwoo Lim ,  Youngbin Chang

    IPC: H04W8/00 ,  H04W48/16 ,  H04W76/02 ,  H04L12/801 ,  H04W72/00 ,  H04W72/04

    CPC classification number: H04W8/005 ,  H04L47/11 ,  H04W48/16 ,  H04W72/005 ,  H04W72/0446 ,  H04W76/14

    Abstract: The present invention relates to a method for performing a D2D discovery and a terminal using the same. Particularly, the present invention relates to a method for performing a D2D discovery, which compares a congestion level of another discovery slot selected randomly or according to a preset pattern with a threshold or a congestion level of a current discovery slot and determines a discovery slot to transmit a discovery message and a transmission period of the discovery message according to a result of the comparison, and a terminal using the same. The present invention relates to a method for performing a D2D discovery using discovery resources including a plurality of discovery slots, and a terminal performing the same, the method comprising the steps of: broadcasting a discovery message by using a first discovery slot; comparing a congestion level of a selected second discovery slot with a predetermined congestion level value; determining a discovery slot to broadcast the discovery message on the basis of a result of the comparison; and broadcasting the discovery message by using the determined discovery slot.

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