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    Control-less data transmission for narrow band internet of things
    1.
    发明授权
    Control-less data transmission for narrow band internet of things 有权

    公开(公告)号：US10306615B2

    公开(公告)日：2019-05-28

    申请号：US15371501

    申请日：2016-12-07

    Applicant: MEDIATEK INC.

    Inventor： Po-Ying Chen ,  Xiu-Sheng Li

    IPC: H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12

    Abstract: Various methods of control-less data transmission for NB-IoT/NR devices have been proposed to improve efficiency and system capacity in cellular networks. In a first embodiment, a PDCCH-less operation is performed between eNB and UE. UE will blindly decode some PDSCH subframes according to the parameters configured by higher layer. In a second embodiment, a PDCCH-lite operation is performed between eNB and UE. UE may use one PDCCH to schedule more than one subsequent PDSCH resources. In a third embodiment, an extremely compact DCI (E-DCI) format is used between eNB and UE. When the same assignment parameters are used by the eNB for the UE, DCI overhead may be reduced by E-DCI. In a fourth embodiment, direct data transmission in PDCCH is performed between eNB and UE. Data transmission is directly transmitted by PDCCH with a new DCI format.

    Method and apparatus for performing wireless communications with aid of successive data processing in multiple iterations
    3.
    发明授权
    Method and apparatus for performing wireless communications with aid of successive data processing in multiple iterations 有权
    用于在多次迭代中辅助连续数据处理来执行无线通信的方法和装置

    公开(公告)号：US09172413B2

    公开(公告)日：2015-10-27

    申请号：US13762387

    申请日：2013-02-08

    Applicant: MEDIATEK INC.

    Inventor： Wei-Jen Chen ,  Chia-Yu Chang ,  Po-Ying Chen

    IPC: H04B1/10

    CPC classification number: H04B1/1081 ,  H04J11/0063 ,  H04L25/0224 ,  H04L25/03171 ,  H04L25/03178 ,  H04L25/03292 ,  H04L25/03318

    Abstract: A method for performing wireless communications and an associated apparatus are provided, where the method is applied to an electronic device. The method includes the steps of: receiving at least one data stream, wherein each data stream from the at least one data stream is transmitted from a wireless channel; in a first iteration, utilizing a Maximum Likelihood (ML) estimator to perform demapping processing on at least one portion of the at least one data stream to obtain Log-Likelihood Ratios (LLRs) of the first iteration and performing Turbo decoding according to the LLRs of the first iteration to generate resultant LLRs of the first Iteration; and in at least one following iteration, utilizing a Max A Posterior (MAP) estimator to perform demapping processing on at least one portion of the at least one data stream and performing Turbo decoding, successively, in order to cancel interference due to the wireless channel.

    Abstract translation: 提供了一种用于执行无线通信的方法和相关联的设备，其中该方法被应用于电子设备。 该方法包括以下步骤：接收至少一个数据流，其中从无线信道发送来自所述至少一个数据流的每个数据流; 在第一迭代中，利用最大似然（ML）估计器对至少一个数据流的至少一部分执行解映射处理，以获得第一迭代的对数似然比（LLR），并根据LLR进行Turbo解码 的第一次迭代以产生第一迭代的合成LLR; 并且在至少一个后续迭代中，利用最大后验（MAP）估计器对所述至少一个数据流的至少一部分执行解映射处理并且连续执行Turbo解码，以便消除由于所述无线信道造成的干扰 。

    METHOD AND APPARATUS FOR PERFORMING WIRELESS COMMUNICATIONS WITH AID OF SUCCESSIVE DATA PROCESSING IN MULTIPLE ITERATIONS
    5.
    发明申请
    METHOD AND APPARATUS FOR PERFORMING WIRELESS COMMUNICATIONS WITH AID OF SUCCESSIVE DATA PROCESSING IN MULTIPLE ITERATIONS 有权
    用于在多重迭代中实现数据处理的无线通信的方法和装置

    公开(公告)号：US20140226764A1

    公开(公告)日：2014-08-14

    申请号：US13762387

    申请日：2013-02-08

    Applicant: MEDIATEK INC.

    Inventor： Wei-Jen Chen ,  Chia-Yu Chang ,  Po-Ying Chen

    IPC: H04B1/10

    CPC classification number: H04B1/1081 ,  H04J11/0063 ,  H04L25/0224 ,  H04L25/03171 ,  H04L25/03178 ,  H04L25/03292 ,  H04L25/03318

    Abstract: A method for performing wireless communications and an associated apparatus are provided, where the method is applied to an electronic device. The method includes the steps of: receiving at least one data stream, wherein each data stream from the at least one data stream is transmitted from a wireless channel; in a first iteration, utilizing a Maximum Likelihood (ML) estimator to perform demapping processing on at least one portion of the at least one data stream to obtain Log-Likelihood Ratios (LLRs) of the first iteration and performing Turbo decoding according to the LLRs of the first iteration to generate resultant LLRs of the first Iteration; and in at least one following iteration, utilizing a Max A Posterior (MAP) estimator to perform demapping processing on at least one portion of the at least one data stream and performing Turbo decoding, successively, in order to cancel interference due to the wireless channel.

    Abstract translation: 提供了一种用于执行无线通信的方法和相关联的设备，其中该方法被应用于电子设备。 该方法包括以下步骤：接收至少一个数据流，其中从无线信道发送来自所述至少一个数据流的每个数据流; 在第一迭代中，利用最大似然（ML）估计器对至少一个数据流的至少一部分执行解映射处理，以获得第一迭代的对数似然比（LLR），并根据LLR进行Turbo解码 的第一次迭代以产生第一迭代的合成LLR; 并且在至少一个后续迭代中，利用最大后验（MAP）估计器对所述至少一个数据流的至少一部分执行解映射处理并且连续执行Turbo解码，以便消除由于所述无线信道造成的干扰 。

    Physical downlink control channel design for narrow band internet of things
    8.
    发明授权
    Physical downlink control channel design for narrow band internet of things 有权

    公开(公告)号：US10104651B2

    公开(公告)日：2018-10-16

    申请号：US15379765

    申请日：2016-12-15

    Applicant: MEDIATEK INC.

    Inventor： Po-Ying Chen ,  Xiu-Sheng Li ,  Kuhn-Chang Lin

    IPC: H04W72/04 ,  H04L5/00 ,  H04W48/16 ,  H04W88/02 ,  H04W88/08

    Abstract: Narrowband downlink control channel (NB-PDCCH) design for Narrowband Internet of Thing (IoT) devices is proposed. In one novel aspect, NB-PDCCH spans both first and second slots in the region of legacy physical downlink shared channel (PDSCH). A plurality of physical resource blocks (PRBs) is allocated for NB-PDCCH transmission that carry downlink control information (DCI). Furthermore, each NB-IoT device can be configured with nPRB PRB pairs for NB-PDCCH transmission (e.g., nPRB=1, 2, 4, or 8), and an NB-PDCCH transmission time interval (TTI) is composed by nPRB subframes. An NB-PDCCH is encoded and occupies multiple narrowband control channel elements (NCCEs) based on aggregation level. In a preferred embodiment, each PRB pair for NB-PDCCH occupies two NCCEs.

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