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    ASYNCHRONOUS WIRELESS SENSING
    13.
    发明申请
    ASYNCHRONOUS WIRELESS SENSING 审中-公开

    公开(公告)号：US20180019862A1

    公开(公告)日：2018-01-18

    申请号：US15651665

    申请日：2017-07-17

    Applicant: New Jersey Institute of Technology

    Inventor： Joerg Kliewer ,  Wei Tang

    IPC: H04L7/00 ,  H04L1/00 ,  H04L1/20 ,  H04L27/12

    CPC classification number: H04L7/0016 ,  G01D4/00 ,  H04L1/0041 ,  H04L1/0047 ,  H04L1/005 ,  H04L1/0052 ,  H04L1/0055 ,  H04L1/203 ,  H04L7/0008 ,  H04L27/12

    Abstract: Low-complexity asynchronous wireless sensing and communication architecture is disclosed for low power wireless sensors. Schemes are based on asynchronous digital communications and Ultra-Wideband impulse radios. In asynchronous radio, combination of frequency-shift-keying (FSK) and on-off-keying (OOK) to remove clock synchronization is applied. Improved asynchronous non-coherent transmitters and receivers achieve both low power and low complexity while seamlessly combined with asynchronous level-crossing modulation. Both uncoded and coded asynchronous communication may be utilized. Coded asynchronous communication may use error correction. Forward error correction schemes for asynchronous sensor communication are utilized where dominant errors consist of pulse deletions and insertions, and where instantaneous encoding takes place. Forward error correction is also accomplished where a continuous-time sparse waveform signal is asynchronously sampled and communicated over a noisy channel via Q-ary frequency-shift keying. Concatenated code employs outer systematic convolutional codes and inner embedded marker codes that preserve timing information and protect against symbol insertions and deletions.

    Forward error correction codeword synchronization method, device, and system
    14.
    发明授权
    Forward error correction codeword synchronization method, device, and system 有权

    公开(公告)号：US09866243B2

    公开(公告)日：2018-01-09

    申请号：US14836597

    申请日：2015-08-26

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Fanglin Sun

    IPC: H03M13/33 ,  H04L1/00 ,  H03M13/11 ,  H03M13/00 ,  H04L5/00

    CPC classification number: H03M13/33 ,  H03M13/11 ,  H03M13/611 ,  H03M13/613 ,  H04L1/0047 ,  H04L5/0005 ,  H04L5/0053

    Abstract: Embodiments of the present invention provide a forward error correction codeword synchronization method, device, and system. The method is: sending, by a central office device, synchronization information of an FEC codeword to a terminal device by using a management channel, where the information includes information about an agreed location of an FEC codeword, and the information about the agreed location of the first FEC codeword indicates a location that is of the first FEC codeword and is corresponding to data at an agreed location of an agreed time-frequency resource block; and receiving, by the terminal device, the synchronization information that is of the FEC codeword and is sent by the central office device, and adjusting a status parameter of an encoder or a decoder according to the information, so as to complete codeword synchronization. The embodiments of the present invention are used for FEC codeword synchronization.

    Receiving eMBMS on a single-radio-multiple-standby user equipment
    20.
    发明授权
    Receiving eMBMS on a single-radio-multiple-standby user equipment 有权

    公开(公告)号：US09668179B2

    公开(公告)日：2017-05-30

    申请号：US14558822

    申请日：2014-12-03

    Applicant: QUALCOMM Incorporated

    Inventor： Xipeng Zhu ,  Jun Wang ,  Xiaoxia Zhang ,  Kuo-Chun Lee ,  Ruiming Zheng

    IPC: H04W4/00 ,  H04L12/28 ,  H04W36/00 ,  H04W24/10 ,  H04L1/00 ,  H04W72/12 ,  H04W48/16

    CPC classification number: H04W36/0066 ,  H04L1/00 ,  H04L1/0047 ,  H04W24/10 ,  H04W48/16 ,  H04W72/1215

    Abstract: Embodiments methods implemented with a server or a processor of a mobile communication device (e.g., a multi-standby communication device) reduce the redundancy information needed to achieve adequate reception service on a first radio access technology (RAT) sharing an RF resource with a second RAT. The device processor may implement at least one tune-away management strategy that mitigates the amount of data for the first RAT that is lost during the tune-away event. Thus, by implementing the one or more tune-away management strategies, the device processor may ensure that less redundancy information overhead is needed to correct or replace lost or partially received data, improving latency, channel usage, and the first RAT's overall reception performance. In some embodiments, a server may implement one or more strategies for including redundancy information into data that is sent to a first RAT to mitigate the negative effects of tune aways on the first RAT.

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