公开(公告)号：US20200100242A1

公开(公告)日：2020-03-26

申请号：US16695197

申请日：2019-11-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Bang Won SEO ,  Young Jo KO ,  Byung Jang JEONG

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/00

Abstract: Provided is a method of transmitting control information using a physical uplink shared channel (PUSCH) region in a system employing a multi-input multi-output (MIMO) antenna system in which transmission is performed through a plurality of layers. A method of transmitting a channel quality indicator (CQI)/precoding matrix indicator (PMI) using a PUSCH region in a system employing a MIMO antenna system in which transmission is performed through a plurality of layers includes encoding the CQI/PMI using one channel encoder, and transmitting the encoded CQI/PMI using some or all of the layers. Accordingly, it is possible to transmit uplink control information through a PUSCH region using a plurality of layers.

公开(公告)号：US20170353985A1

公开(公告)日：2017-12-07

申请号：US15683009

申请日：2017-08-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Bang Won SEO ,  Young Jo KO ,  Tae Gyun NOH ,  Jae Young AHN

IPC: H04W76/02 ,  H04L5/00 ,  H04L1/18

CPC classification number: H04W76/14 ,  H04L1/1861 ,  H04L5/0051 ,  H04L5/0053

Abstract: A method of transmitting and receiving a specific reference signal in single point transmission and multi-point transmission is disclosed. The specific reference signal transmission method includes determining specific reference signal transmission resources for at least one terminal targeted for transmission, and transmitting the specific reference signal using the determined transmission resources and notifying of information for a layer used by the terminal. The specific reference signal transmission method includes determining specific reference signal reception resources, receiving the information for the layer used by the terminal from a serving cell base station, and receiving the specific reference signal using the information for determined transmission resources and the layer.Therefore, the terminal can recognize a position and a sequence of the specific reference signal. Particularly, in the case of multi-user MIMO and cooperative scheduling, signal interference can be suppressed or removed using the specific reference signal of another terminal.

公开(公告)号：US20170099599A1

公开(公告)日：2017-04-06

申请号：US15380603

申请日：2016-12-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young Jo KO ,  Jae Young AHN ,  Tae Gyun NOH ,  Bang Won SEO

IPC: H04W8/00 ,  H04W76/02 ,  H04W72/04 ,  H04L5/00 ,  H04L12/26

CPC classification number: H04W8/005 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0082 ,  H04L5/14 ,  H04L43/0864 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0453 ,  H04W76/14 ,  H04W84/042 ,  H04W92/18

Abstract: A discovery method for device to device communication between terminals is disclosed. The discovery method for the device to device communication between terminals comprises the steps of: performing transmission in a first sub-frame; transmitting a discovery channel through a preset section in a second sub-frame located next to the first sub-frame; and performing transmission in a third sub-frame next to the second sub-frame. Therefore, the present invention can transmit and receive the discovery channel without colliding with other data.

公开(公告)号：US20160057740A1

公开(公告)日：2016-02-25

申请号：US14930763

申请日：2015-11-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young Jo KO ,  Bang Won SEO ,  Jae Young AHN

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04L1/0045 ,  H04L1/0061 ,  H04L5/001 ,  H04L5/0053 ,  H04W4/00 ,  H04W72/046 ,  H04W88/02 ,  H04W88/08

Abstract: Data transmission and reception is provided by configuring control channels in a wireless communication system using a plurality of carriers. User equipment (UE) may monitor physical downlink control channel (PDCCH) candidates within common search spaces (CSSs) and User Equipment-specific search spaces (USSs). If the UE is configured with cross-carrier scheduling, when two PDCCH candidates originating from a CSS and a USS, respectively, have cyclic redundancy check (CRC) scrambled by the same Radio Network Temporary Identifier (RNTI) and have a common payload size and the same first control channel element (CCE) index, the UE may interpret that only the PDCCH originating from the CSS is transmitted, thereby solving ambiguity of downlink control information (DCI) detection.

公开(公告)号：US20150222404A1

公开(公告)日：2015-08-06

申请号：US14687448

申请日：2015-04-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Byung Jang JEONG ,  Young Jo KO ,  Bang Won SEO ,  Jae Young AHN

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L27/2607 ,  H04L27/265 ,  H04W72/0413

Abstract: Disclosed is a method for generating and transmitting a reference signal in a clustered DFT-spread OFDM transmission scheme. A method for generating and transmitting a DM-RS in a clustered DFT-spread-OFDM scheme comprises: a step of generating DM-RS sequences corresponding to the number of clusters allocated for an uplink transmission; and a step of mapping the generated DM-RS sequences to the relevant DM-RS symbol positions for each cluster. Accordingly, the method for generating and transmitting a reference signal according to the present invention, in which DM-RS sequences are allocated and transmitted on a cluster basis, uses a complete DM-RS sequence for each cluster, and therefore inter-cell interference can be weakened, and problems which might occur when applied to a multi-user MIMO (MU-MIMO) scheme can be solved.

Abstract translation: 公开了一种用于在聚集的DFT扩展OFDM传输方案中产生和发送参考信号的方法。 一种用于在聚簇DFT扩展OFDM方案中产生和发送DM-RS的方法包括：产生对应于为上行链路传输分配的簇数量的DM-RS序列的步骤; 以及将生成的DM-RS序列映射到每个簇的相关DM-RS符号位置的步骤。 因此，根据本发明的基于簇分配和发送DM-RS序列的参考信号的生成和发送方法对于每个簇使用完整的DM-RS序列，因此小区间干扰可以 被削弱，并且可以解决当应用于多用户MIMO（MU-MIMO）方案时可能出现的问题。

公开(公告)号：US20140098759A1

公开(公告)日：2014-04-10

申请号：US14039947

申请日：2013-09-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Tae Gyun NOH ,  Young Jo KO ,  Bang Won SEO ,  Jae Young AHN

IPC: H04W76/02 ,  H04W72/04

CPC classification number: H04W76/023 ,  H04L1/0026 ,  H04W72/0413 ,  H04W72/082 ,  H04W76/14

Abstract: A method of device-to-device (D2D) communication and apparatus thereof are provided. A communication method performed in a second device according to an embodiment of the present invention comprising: receiving first configuration information for receiving reference signal and second configuration information for transmitting channel state information from a base station; receiving the reference signal based on the first configuration information from the first device; generating the channel state information on a communication link between the first device and the second device based on the reference signal; and transmitting the channel state information based on the second configuration information to the base station. Accordingly, the D2D communication may be performed effectively.

Abstract translation: 提供了一种设备到设备（D2D）通信的方法及其装置。 根据本发明的实施例的在第二设备中执行的通信方法包括：接收用于接收参考信号的第一配置信息和用于从基站发送信道状态信息的第二配置信息; 基于来自第一设备的第一配置信息接收参考信号; 基于所述参考信号在所述第一设备和所述第二设备之间的通信链路上生成所述信道状态信息; 以及基于所述第二配置信息向所述基站发送所述信道状态信息。 因此，可以有效地执行D2D通信。