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    Efficient Control and Data Multiplexing in Communication Systems
    61.
    发明申请
    Efficient Control and Data Multiplexing in Communication Systems 有权

    公开(公告)号：US20170289970A1

    公开(公告)日：2017-10-05

    申请号：US15473622

    申请日：2017-03-30

    Applicant: MEDIATEK INC.

    Inventor： Weidong Yang ,  Yih-Shen Chen ,  Chien-Chang Li ,  Bo-Si Chen

    IPC: H04W72/04

    CPC classification number: H04W72/0406 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0087 ,  H04L5/0092 ,  H04W52/146 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/085 ,  H04W72/10 ,  H04W84/042

    Abstract: Methods and apparatus are provided for control overhead reduction. The UE configures one or more short transmission time interval regions over a normal TTI region shared by the UE and one or more other, each UE includes a self-contained control information sPDCCH occupying a control information region. The UE detects a cover signal, which indicates one or more resource elements in the sPDCCH control-information region that can be used for data transmission. The UE obtains data transmission from the REs in the SPDCCH control information region based on the detected cover signal. In one embodiment, the cover signal is a dedicated signal. In another embodiment, the cover signal is a common signal. In yet another embodiment, the cover signal is encoded in a downlink control information (DCI) intended for the UE. In one embodiment, the cover signal indicates one or more CCE REs to be excluded for data transmission.

    Multiplexing DRS within a Transmission Burst for Opportunistic Spectrum Access
    65.
    发明申请
    Multiplexing DRS within a Transmission Burst for Opportunistic Spectrum Access 有权

    公开(公告)号：US20170093542A1

    公开(公告)日：2017-03-30

    申请号：US15281030

    申请日：2016-09-29

    Applicant: MEDIATEK INC.

    Inventor： Chien-Chang Li ,  Weidong Yang ,  Pei-Kai Liao ,  Bo-Si Chen

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

    CPC classification number: H04L5/0048 ,  H04W48/16 ,  H04W72/042 ,  H04W72/0446 ,  H04W88/02

    Abstract: Methods and apparatus are provided for multiplexing DRS within a transmission burst for opportunistic spectrum access. In one novel aspect, DRS is not transmitted in a fractional subframe within a TXOP. In one embodiment, if the starting fractional subframe, which contains initial signal, occurs in a configured DMTC, DRS is transmitted in the first subframe next to the starting fractional subframe. In another embodiment, if DMTC starts from a complete subframe within a TXOP, DRS is transmitted in the first candidate position within a DMTC. In another novel aspect, in the DRS subframe, PDSCH is allocated in the PRBs outside the central PRBs (six or twenty-five PRBs). In one embodiment, the reservation signal can be used to satisfy the requirement of occupied bandwidth and continuity transmission. In another embodiment, the free REs in central PRBs carry the system information when required on the unlicensed band.

    Methods of Discovery and Measurements for Small Cells in OFDM/OFDMA Systems
    67.
    发明申请
    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：US20150092582A1

    公开(公告)日：2015-04-02

    申请号：US14496219

    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

    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。

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