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    Methods of discovery and measurements for small cells in OFDM/OFDMA systems
    33.
    发明授权
    Methods of discovery and measurements for small cells in OFDM/OFDMA systems 有权
    OFDM / OFDMA系统中小型小区的发现和测量方法

    公开(公告)号：US09559797B2

    公开(公告)日：2017-01-31

    申请号：US14496181

    申请日：2014-09-25

    Applicant: MEDIATEK INC.

    Inventor： Pei-Kai Liao ,  Hsiao-Lan Chiang ,  Chien-Chang Li ,  Xiangyang Zhuang

    IPC: H04J11/00 ,  H04L5/00 ,  H04L27/26 ,  H04W24/08 ,  H04W48/10 ,  H04W88/02 ,  H04W48/16

    CPC classification number: H04J11/005 ,  H04J11/0079 ,  H04J2011/0096 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0073 ,  H04L27/2613 ,  H04W24/08 ,  H04W48/10 ,  H04W48/16 ,  H04W88/02

    Abstract: A method of small cell discovery and RSRP/RSRQ measurements in OFDM/OFDMA systems is proposed. A discovery reference signal (DRS) with low transmission frequency is introduced to support small cell detection within a short time, multiple small cell discovery, and accurate measurement of multiple small cells. The DRS consists of one or multiple reference signal types with the functionalities including timing and frequency synchronization, cell detection, RSRP/RSSI/RSRQ measurements, and interference mitigation. RE muting is configured for the DRS to reduce interference level from data to DRS for discovery and RSRP/RSRQ measurements for small cells.

    Abstract translation: 提出了OFDM / OFDMA系统中小信元发现和RSRP / RSRQ测量的方法。 引入具有低传输频率的发现参考信号（DRS），以支持短时间内的小细胞检测，多个小细胞发现以及多个小细胞的精确测量。 DRS由一个或多个参考信号类型组成，其功能包括定时和频率同步，信元检测，RSRP / RSSI / RSRQ测量和干扰减轻。 为DRS配置RE静音，以减少数据到DRS的干扰等级，以便小型小区进行发现和RSRP / RSRQ测量。

    Power Headroom Reporting in Adaptive TDD Systems
    34.
    发明申请
    Power Headroom Reporting in Adaptive TDD Systems 审中-公开
    自适应TDD系统中的功率余量报告

    公开(公告)号：US20160044610A1

    公开(公告)日：2016-02-11

    申请号：US14873201

    申请日：2015-10-02

    Applicant: MEDIATEK INC.

    Inventor： Chien-Hwa Hwang ,  Shiang-Jiun Lin ,  Min Wu ,  Xiangyang Zhuang

    IPC: H04W52/36 ,  H04L5/14 ,  H04W72/04

    CPC classification number: H04W52/365 ,  H04L1/1861 ,  H04L5/001 ,  H04L5/1469 ,  H04W52/08 ,  H04W52/10 ,  H04W52/146 ,  H04W52/221 ,  H04W52/325 ,  H04W52/34 ,  H04W52/48 ,  H04W52/58 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0473

    Abstract: A method of power headroom reporting in adaptive TDD systems is proposed. A UE obtains configuration information from a base station in an adaptive TDD system. Each radio frame comprises a plurality of subframes, which are configured into two or more subframe sets. The UE determines a power headroom reporting (PHR) triggering condition. The UE performs PHR for at least one of the configured two or more subframe sets upon satisfying the triggering condition. In one embodiment, the UE sends PH values for all subframe sets in the same PH reporting subframe. In another embodiment, the UE sends PH values for different subframe sets in different PHR reporting subframes.

    Abstract translation: 提出了一种自适应TDD系统中功率余量报告的方法。 UE在自适应TDD系统中从基站获取配置信息。 每个无线电帧包括被配置成两个或多个子帧集合的多个子帧。 UE确定功率余量报告（PHR）触发条件。 UE在满足触发条件时，为配置的两个或多个子帧组中的至少一个执行PHR。 在一个实施例中，UE在相同的PH报告子帧中为所有子帧组发送PH值。 在另一个实施例中，UE在不同PHR报告子帧中发送不同子帧集合的PH值。

    Physical structure and reference signal utilization of enhanced physical downlink control channel for OFDM/OFDMA systems
    39.
    发明授权
    Physical structure and reference signal utilization of enhanced physical downlink control channel for OFDM/OFDMA systems 有权
    OFDM / OFDMA系统增强物理下行链路控制信道的物理结构和参考信号利用

    公开(公告)号：US09277548B2

    公开(公告)日：2016-03-01

    申请号：US13927113

    申请日：2013-06-26

    Applicant: MEDIATEK, INC.

    Inventor： Pei-Kai Liao ,  Hua-Min Chen ,  Xiangyang Zhuang

    IPC: H04W72/02 ,  H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04W48/16

    CPC classification number: H04W72/1289 ,  H04L1/0045 ,  H04L1/0061 ,  H04L1/0072 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0053 ,  H04W16/32 ,  H04W48/16 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/046 ,  H04W72/0493 ,  H04W88/02 ,  H04W88/08

    Abstract: A two-level physical structure is defined for better diversity for both distributed and localized transmission in enhanced physical downlink control channel (ePDCCH). First level is a physical unit of enhanced resource element groups (eREGs), where the group of REs is predefined for each eREG. Second level is a logical unit of enhanced control channel elements (eCCEs), where the group of eREGs is predefined or configurable by higher layer for each eCCE. For distributed transmission of ePDCCH, eCCE consists of several eREGs that are distributed in multiple non-contiguous PRBs spreading over the whole channel frequency. Downlink control information (DCI) is transmitted on a number of aggregated eCCEs according to the modulation and coding level required. The utilization reference signals of antenna ports for ePDCCH demodulation is based on the logical order of eCCEs and the aggregation level for DCI transmission.

    Abstract translation: 定义了两级物理结构，用于在增强的物理下行链路控制信道（ePDCCH）中用于分布式和局部传输的更好的分集。 第一级是增强资源元素组（eREG）的物理单位，其中RE组是为每个eREG预定义的。 第二级是增强的控制信道单元（eCCE）的逻辑单元，其中eEGE组由每个eCCE预定义或由更高层配置。 对于ePDCCH的分布式传输，eCCE由分布在整个信道频率上扩展的多个非连续PRB中的若干eREG组成。 下行链路控制信息（DCI）根据所需的调制和编码等级在多个聚合的eCCE上发送。 用于ePDCCH解调的天线端口的利用参考信号基于eCCE的逻辑顺序和DCI传输的聚合级别。

    Separate Accumulation of UE Transmit Power Adjustment in Adaptive TDD Systems
    40.
    发明申请
    Separate Accumulation of UE Transmit Power Adjustment in Adaptive TDD Systems 审中-公开
    自适应TDD系统中UE发射功率调整的分离累积

    公开(公告)号：US20160029392A1

    公开(公告)日：2016-01-28

    申请号：US14873302

    申请日：2015-10-02

    Applicant: MEDIATEK INC.

    Inventor： Chien-Hwa Hwang ,  Shiang-Jiun Lin ,  Min Wu ,  Xiangyang Zhuang

    IPC: H04W72/04 ,  H04W52/10 ,  H04L5/14 ,  H04W52/08

    CPC classification number: H04W52/365 ,  H04L1/1861 ,  H04L5/001 ,  H04L5/1469 ,  H04W52/08 ,  H04W52/10 ,  H04W52/146 ,  H04W52/221 ,  H04W52/325 ,  H04W52/34 ,  H04W52/48 ,  H04W52/58 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0473

    Abstract: A method of separate accumulation in closed-loop power control in adaptive TDD systems is proposed. A UE obtains configuration information from a base station in an adaptive TDD system. Each radio frame comprises a plurality of subframes, which are configured into two or more subframe sets. The UE receives a transmit power control (TPC) command in a downlink subframe. The UE determines a power control adjustment state for an uplink subframe i based on the TPC command. The power control adjustment state of subframe i is accumulated from a power control adjustment state of a previous uplink subframe j, where subframe i and subframe j belong to the same subframe set. In one embodiment, subframe j is the closest previous uplink subframe with respect to uplink subframe i.

    Abstract translation: 提出了一种在自适应TDD系统中闭环功率控制中单独累积的方法。 UE在自适应TDD系统中从基站获取配置信息。 每个无线电帧包括被配置成两个或多个子帧集合的多个子帧。 UE在下行链路子帧中接收发送功率控制（TPC）命令。 UE根据TPC命令确定上行链路子帧i的功率控制调整状态。 从前一个上行链路子帧j的功率控制调整状态累加子帧i的功率控制调整状态，其中子帧i和子帧j属于同一子帧组。 在一个实施例中，子帧j相对于上行链路子帧i是最近的上一个上行链路子帧。

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