公开(公告)号：US20210022097A1

公开(公告)日：2021-01-21

申请号：US17064956

申请日：2020-10-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seunghoon PARK ,  Hyunseok RYU ,  Peng XUE ,  Chiwoo LIM ,  Sangwon CHOI

IPC: H04W56/00 ,  H04W8/00 ,  H04W72/10

Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data rate in comparison to the 4G communication system, such as long term evolution (LTE). A method for a terminal to establish synchronization with another terminal in a network supporting device-to-device (D2D) communication is provided. The method includes scanning, at the terminal, for synchronization signals from at least one base station, acquiring, when a synchronization signal is received from a base station, synchronization with the base station based on the synchronization signal, measuring power of the synchronization signal received from the base station, and transmitting, when data to be transmitted are generated in idle mode and the received signal power is less than a received signal power, a synchronization signal as a synchronization relaying terminal.

公开(公告)号：US20200221319A1

公开(公告)日：2020-07-09

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).

公开(公告)号：US20160262124A1

公开(公告)日：2016-09-08

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 ,  H04J11/00 ,  H04L5/14 ,  H04W4/00 ,  H04W12/06

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.

Abstract translation: 根据本公开的实施例，一种用于在移动通信系统的设备中发送和接收信号的方法包括以下步骤：从基站接收包含同步信息和资源分配信息中的一个或多个的第一消息; 向其他设备发送包含所接收的同步信息和资源分配信息的第二消息; 以及基于所述同步信息和所述资源分配信息从所述另一设备接收用于随机接入的第三消息。 根据本公开的实施例，即使未能获得同步的设备也可以从基站通过其他设备获得同步，接收认证和安全相关信息，从而执行可靠的D2D通信。 此外，通过有限的资源在设备之间发送和接收D2D相关信息，可以提高通信效率。

公开(公告)号：US20140030978A1

公开(公告)日：2014-01-30

申请号：US13950945

申请日：2013-07-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyungkyu KIM ,  Daegyun KIM ,  Seunghoon PARK ,  Chiwoo LIM

IPC: H04W76/02

CPC classification number: H04W76/021 ,  H04W76/11

Abstract: A method of performing pairing by a transmission terminal in device to device communication is provided. The method includes classifying a plurality of link identifications for identifying a data transmission and reception channel a seed of at least one link identification; selecting an available candidate link identification seed among the seed of the at least one link identification, transmitting a pairing request message including seed information associated with the selected available candidate link identification seed, and receiving a pairing response message corresponding to the pairing request message. When allocating a connection ID in a device to device communication environment, even if a small number of devices exist, an overhead for searching for the connection ID is not great. Further, when many devices exist within a specific range, a probability of devices having the same connection ID is reduced. Accordingly, the device to device communication can be easily performed.

Abstract translation: 提供了一种在设备到设备通信中由传输终端执行配对的方法。 该方法包括对多个链路标识进行分类，用于识别数据发送和接收信道至少一个链路标识的种子; 在所述至少一个链路标识的种子中选择可用的候选链路标识种子，发送包括与所选择的可用候选链路标识种子相关联的种子信息的配对请求消息，以及接收与配对请求消息相对应的配对响应消息。 当将设备中的连接ID分配给设备通信环境时，即使存在少量设备，搜索连接ID的开销也不大。 此外，当在特定范围内存在许多设备时，具有相同连接ID的设备的概率降低。 因此，可以容易地执行设备到设备通信。

公开(公告)号：US20180138960A1

公开(公告)日：2018-05-17

申请号：US15806132

申请日：2017-11-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seokki AHN ,  Kwangtaik KIM ,  Yongseok KIM ,  Chiwoo LIM

IPC: H04B7/06 ,  H04L5/00

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.According to various embodiments of the present disclosure, a CQI transmission method of a terminal in a wireless communication system includes: estimating a channel of a serving base station and an interference base station to which sliding-window superposition coding (SWSC) is applied; generating channel quality information (CQI)-related information on the serving base station and the interference base station based on the estimated channel to indicate an achievable rate region; and transmitting the generated CQI-related information. However, the present disclosure is not limited to the above embodiment, and therefore other embodiments are possible.

公开(公告)号：US20160095074A1

公开(公告)日：2016-03-31

申请号：US14864009

申请日：2015-09-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seunghoon PARK ,  Hyunseok RYU ,  Peng XUE ,  Chiwoo LIM ,  Sangwon CHOI

IPC: H04W56/00 ,  H04W72/10 ,  H04W8/00

Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data rate in comparison to the 4G communication system, such as long term evolution (LTE). A method for a terminal to establish synchronization with another terminal in a network supporting device-to-device (D2D) communication is provided. The method includes scanning, at the terminal, for synchronization signals from at least one base station, acquiring, when a synchronization signal is received from a base station, synchronization with the base station based on the synchronization signal, measuring power of the synchronization signal received from the base station, and transmitting, when data to be transmitted are generated in idle mode and the received signal power is less than a received signal power, a synchronization signal as a synchronization relaying terminal.

Abstract translation: 本公开涉及与诸如长期演进（LTE）的4G通信系统相比支持更高数据速率的第5代（5G）或5G前通信系统。 提供了一种终端在支持设备到设备（D2D）通信的网络中与另一终端建立同步的方法。 该方法包括在终端处扫描来自至少一个基站的同步信号，当从基站接收到同步信号时，基于同步信号获取与基站的同步，测量接收到的同步信号的功率 并且当在空闲模式下生成要发送的数据并且接收信号功率小于接收信号功率时，发送同步信号作为同步中继终端。

公开(公告)号：US20140128116A1

公开(公告)日：2014-05-08

申请号：US14075643

申请日：2013-11-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chiwoo LIM ,  Kyungkyu KIM ,  Daegyun KIM ,  Hyunseok RYU ,  Seunghoon PARK

IPC: H04W72/04 ,  H04W28/02

CPC classification number: H04W72/0446 ,  H04W72/02

Abstract: A scheduling method and apparatus using a non-orthogonal Connection IDentifier (CID) for use in a device-to-device communication system is provided. The scheduling method includes generating a non-orthogonal CID for communication with a counterpart terminal, determining slot indices for communication using the non-orthogonal CID, and communicating with the counterpart terminal through the slots indicated by the slot indices. The non-orthogonal CID-based scheduling method and apparatus is capable of selecting the slots for use in the non-orthogonal CID-based scheduling according to a rule so as to overcome CID collision in the system of using the non-orthogonal CID.

Abstract translation: 提供了一种使用非正交连接标识符（CID）在设备到设备通信系统中使用的调度方法和装置。 调度方法包括生成用于与对方终端通信的非正交CID，确定使用非正交CID的通信的时隙索引，以及通过时隙索引指示的时隙与对方终端进行通信。 基于非正交CID的调度方法和装置能够根据规则选择用于非正交CID调度中的时隙，以克服使用非正交CID的系统中的CID冲突。

公开(公告)号：US20160366004A1

公开(公告)日：2016-12-15

申请号：US15120928

申请日：2015-02-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungnam HONG ,  Min SAGONG ,  Chiwoo LIM

IPC: H04L27/34 ,  H04L27/10 ,  H04L25/03 ,  H04B17/336

CPC classification number: H04L27/3411 ,  H04B17/336 ,  H04L25/03866 ,  H04L27/106

Abstract: A method and a transmission device of a mobile communication system are disclosed. The method includes determining a modulation method for data transmission, determining the level of a quadrature amplitude modulation (QAM) according to the determined modulation method, determining the amplitude of a carrier wave and the phase of the carrier wave on the basis of the determined QAM level and the data to be transmitted, and, when the determined modulation method is a first modulation method, determining a sequence length, selecting a sequence form among sequences having the determined length according to the data to be transmitted, and generating a symbol modulating the data to be transmitted, on the basis of the selected sequence, the determined amplitude of the carrier wave, and the determined phase of the carrier wave.

Abstract translation: 公开了一种移动通信系统的方法和传输装置。 该方法包括确定用于数据传输的调制方法，根据确定的调制方法确定正交幅度调制（QAM）的电平，基于确定的QAM确定载波的幅度和载波的相位 电平和要发送的数据，并且当确定的调制方法是第一调制方法时，确定序列长度，根据要发送的数据选择具有确定的长度的序列中的序列形式，并产生调制 基于所选择的序列要发送的数据，所确定的载波的幅度和所确定的载波的相位。

公开(公告)号：US20160142899A1

公开(公告)日：2016-05-19

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 ,  H04W72/00 ,  H04W72/04 ,  H04L12/801

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.

Abstract translation: 本发明涉及一种用于执行D2D发现的方法和使用该方法的终端。 特别地，本发明涉及一种用于执行D2D发现的方法，该方法将随机地或根据预设模式选择的另一发现时隙的拥塞级别与当前发现时隙的阈值或拥塞级别进行比较，并将发现时隙 根据比较的结果发送发现消息和发现消息的发送周期，以及使用其的终端。 本发明涉及一种使用包括多个发现时隙的发现资源来执行D2D发现的方法，以及执行该发现时隙的终端的方法，所述方法包括以下步骤：通过使用第一发现时隙广播发现消息; 将所选择的第二发现时隙的拥塞级别与预定拥塞级别值进行比较; 基于所述比较的结果确定发现时隙以广播所述发现消息; 以及通过使用所确定的发现时隙来广播所述发现消息。

公开(公告)号：US20130336307A1

公开(公告)日：2013-12-19

申请号：US13922056

申请日：2013-06-19

Applicant: Research & Business Foundation of Sungkyunkwan University ,  Samsung Electronics Co., Ltd.

Inventor： Seunghoon PARK ,  Hyungjin CHOI ,  Kyunghoon WON ,  Kyunghoon LEE ,  Kyungkyu KIM ,  Daegyun KIM ,  Chiwoo LIM

IPC: H04W56/00

CPC classification number: H04W56/00 ,  H04W56/002

Abstract: A terminal synchronization method and apparatus for use in a wireless communication system are provided. A synchronization method includes configuring, at the terminal, a synchronization signal reference time depending on whether a synchronization signal is received in an initial observation period as long as at least two frames, monitoring to receive the synchronization signal in an alternation period of a transmission period and a reception period, the alternation period following the initial observation period, updating the reference time depending on whether the synchronization signal is received in the reception period, transmitting the synchronization signal at the updated reference time in the transmission period, and updating the reference time depending on whether the synchronization signal is received in a dedicated observation period following the alternation period. The synchronization apparatus and method are advantageous in that synchronization is obtained without assistance of a base station, an Access Point (AP), etc.

Abstract translation: 提供了一种在无线通信系统中使用的终端同步方法和装置。 一种同步方法包括：在终端，根据在初始观察期间是否接收到同步信号至少两帧，在同一信号基准时间内进行配置，在发送周期的交替周期内监视接收同步信号 以及接收期间，在初始观察期间之后的交替期间，根据在接收期间是否接收到同步信号来更新基准时间，在发送期间以更新的基准时刻发送同步信号，更新基准时间 取决于在交替周期之后的专用观察时段中是否接收到同步信号。 同步装置和方法的优点在于，在没有基站，接入点（AP）等的协助的情况下获得同步