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    Method and apparatus for transmitting uplink signal in mobile communication system of unlicensed band
    64.
    发明授权
    Method and apparatus for transmitting uplink signal in mobile communication system of unlicensed band 有权

    公开(公告)号：US10212726B2

    公开(公告)日：2019-02-19

    申请号：US15331371

    申请日：2016-10-21

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Seung-Kwon Baek ,  Young Jo Ko ,  Eunkyung Kim ,  Chanho Yoon

    IPC: H04W72/12 ,  H04L1/18

    Abstract: Disclosed herein is a method for transmitting, by a terminal, an uplink signal using a first cell type representing a cell using a licensed band frequency and a second cell type representing a cell using an unlicensed band frequency. The terminal configures at least one first radio bearer (RB) being able to use a radio resource for the first cell type and a radio resource for the second cell type for an uplink transmission. The terminal configures at least one second RB being able to use a radio resource for the first cell type for an uplink transmission. The terminal includes at least one first logical channel corresponding to the at least one first RB in a first logical channel group, and the terminal includes at least one second logical channel corresponding to the at least one second RB in a second logical channel group.

    Method and apparatus for transmission and reception in multi-carrier wireless communication systems
    68.
    发明授权
    Method and apparatus for transmission and reception in multi-carrier wireless communication systems 有权
    用于多载波无线通信系统中的发送和接收的方法和装置

    公开(公告)号：US09198175B2

    公开(公告)日：2015-11-24

    申请号：US14087928

    申请日：2013-11-22

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Young Jo Ko ,  Bang Won Seo ,  Jae Young Ahn

    IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08 ,  H04L1/00

    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.

    Abstract translation: 通过在使用多个载波的无线通信系统中配置控制信道来提供数据发送和接收。 用户设备（UE）可以监视公共搜索空间（CSS）和用户设备特定搜索空间（USS）内的物理下行链路控制信道（PDCCH）候选。 如果UE配置了跨载波调度，则当分别来自CSS和USS的两个PDCCH候选分别具有由同一无线电网络临时标识符（RNTI）加扰并且具有公共有效负载大小的循环冗余校验（CRC） 相同的第一控制信道单元（CCE）索引，则UE可以解释仅发送来自CSS的PDCCH，从而解决下行链路控制信息（DCI）检测的模糊性。

    Method for generating and transmitting a reference signal for uplink demodulation in a clustered DFT-spread OFDM transmission scheme
    70.
    发明授权
    Method for generating and transmitting a reference signal for uplink demodulation in a clustered DFT-spread OFDM transmission scheme 有权
    用于在聚集的DFT扩展OFDM传输方案中生成和发送用于上行链路解调的参考信号的方法

    公开(公告)号：US09025684B2

    公开(公告)日：2015-05-05

    申请号：US14031844

    申请日：2013-09-19

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Byung Jang Jeong ,  Young Jo Ko ,  Bang-Won Seo ,  Jae Young Ahn

    IPC: H04L5/00

    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。

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