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    PROCESSING A CONSTANT AMPLITUDE SEQUENCE FOR TRANSMISSION
    5.
    发明公开
    PROCESSING A CONSTANT AMPLITUDE SEQUENCE FOR TRANSMISSION 审中-公开

    公开(公告)号：EP3371944A1

    公开(公告)日：2018-09-12

    申请号：EP16795459.3

    申请日：2016-11-04

    Applicant: Telefonaktiebolaget LM Ericsson (PUBL)

    Inventor： LIN, Xingqin ,  SUI, Yutao ,  GRÖVLEN, Asbjörn ,  ADHIKARY, Ansuman ,  WANG, Yi-Pin Eric ,  JOHANSSON, Niklas

    IPC: H04L25/03 ,  H04J13/00 ,  H04L27/26

    CPC classification number: H04L25/03834 ,  H04J13/0062 ,  H04J13/105 ,  H04L27/2613 ,  H04L27/2614 ,  H04L27/2692

    Abstract: An apparatus (10) and method (100) for processing a constant amplitude sequence (12) yields a transmission signal (32) exhibiting a low peak to average power ratio, PAPR. The signal (32) may be suitable for transmission (140) in the uplink as a random access preamble or uplink measurement signal for handover assessment. The signal (32) may be suitable for transmission (140) in the downlink as a synchronization signal. The method (100) comprises extending (110) a constant amplitude sequence (12), such as a Zadoff-Chu sequence, by adding to the sequence one or more complex-valued elements that have the same amplitude as other complex-valued elements in the sequence (12). The method (100) also includes upsampling (120) the extended sequence (16) by linearly interpolating a difference in phase between adjacent complex-valued elements in the extended sequence (16). The method (100) further entails limiting (130) a bandwidth of the upsampled sequence (20) by low pass filtering the upsampled sequence (20). The method (100) may also include transmitting (140) the band limited sequence (28). Due to the low PAPR of the transmitted signal (32), a power amplifier, which may be integrated with other circuits in a System-on-Chip, may have a low backoff. This yields high efficiency for the amplifier, hence low power consumption, and hence extended battery life in radio network devices.

    COMMUNICATION DEVICE AND COMMUNICATION METHOD
    6.
    发明公开
    COMMUNICATION DEVICE AND COMMUNICATION METHOD 审中-公开

    公开(公告)号：EP3367597A1

    公开(公告)日：2018-08-29

    申请号：EP16857071.1

    申请日：2016-09-12

    Applicant: Panasonic Intellectual Property Corporation of America

    Inventor： MURAKAMI, Yutaka

    IPC: H04J99/00 ,  H04B7/04 ,  H04J3/00 ,  H04J11/00

    CPC classification number: H04L27/2692 ,  H04B7/04 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/086 ,  H04J3/00 ,  H04J11/00 ,  H04L27/262 ,  H04L27/2626 ,  H04L27/2662 ,  H04L27/2675 ,  H04W72/0446

    Abstract: A communication apparatus (2900) in the present disclosure includes a signal processing unit (2901) that adjusts a transmission timing and/or a frequency such that a modulated symbol sequence for each terminal is transmitted within a frame corresponding to a communicable range to which each terminal belongs among a plurality of frames defined by time and frequency bands and a weighting synthesis unit (2902) that applies weights to each of the modulated symbol sequences and transmits the modulated symbol sequence from an antenna element. The frame is set such that the number of modulated symbol sequences that can be simultaneously transmitted in the same period of time and the same frequency band becomes different depending on communicable ranges, the frame including subframes specified by performing time division and/or frequency division on the frame. The signal processing unit assigns, to each of the subframes, modulated symbol sequences, the number of which is equal to or fewer than the number of modulated symbol sequences that can be simultaneously communicated.

    METHOD AND DEVICE FOR DETECTING PRIMARY SYNCHRONIZATION SIGNAL AND GENERATING SEQUENCE IN LONG TERM EVOLUTION (LTE) SYSTEM
    8.
    发明授权
    METHOD AND DEVICE FOR DETECTING PRIMARY SYNCHRONIZATION SIGNAL AND GENERATING SEQUENCE IN LONG TERM EVOLUTION (LTE) SYSTEM 有权
    用于检测长期演进（LTE）系统中的主要同步信号和产生序列的方法和设备

    公开(公告)号：EP2518961B1

    公开(公告)日：2018-01-31

    申请号：EP10845093.3

    申请日：2010-09-17

    Applicant: ZTE Corporation

    Inventor： ZHOU, Peng ,  CHEN, Yuefeng

    IPC: H04L27/26 ,  H04J13/14 ,  H04J11/00

    CPC classification number: H04J11/0073 ,  H04J13/14 ,  H04L27/2613 ,  H04L27/2643 ,  H04L27/2655 ,  H04L27/2692

    Abstract: The present invention discloses a method and a device for detecting a primary synchronization signal and generating a sequence in a LTE system, so as to solve the problem that the overhead for 3GPP LTE system to store a local primary synchronization sequence is too much during the initial cell search process. The method for detecting a primary synchronization signal includes: directly generating a local primary synchronization signal sequence with equal amplitude in the time domain as a matched filter; performing a front-end processing for a received signal; performing the matched filtering between the received signal after the front-end processing and the local primary synchronization signal sequence; judging the output amplitude of the signal sequence obtained after the matched filtering; and then obtaining a judgment result of the local primary synchronization signal sequence.

    METHOD AND DEVICE FOR SENDING DISCOVERY SIGNAL ON UNLICENSED CARRIER, AND ACCESS POINT
    9.
    发明公开
    METHOD AND DEVICE FOR SENDING DISCOVERY SIGNAL ON UNLICENSED CARRIER, AND ACCESS POINT 审中-公开
    在非授权载波上发送发现信号的方法和设备，以及接入点

    公开(公告)号：EP3185633A1

    公开(公告)日：2017-06-28

    申请号：EP15758443.4

    申请日：2015-01-20

    Applicant: ZTE Corporation

    Inventor： XU, Hanqing ,  ZHAO, Yajun ,  MO, Linmei

    IPC: H04W72/08 ,  H04W48/16 ,  H04L27/26

    CPC classification number: H04L27/2692 ,  H04L27/0006 ,  H04L27/26 ,  H04W48/12 ,  H04W48/16 ,  H04W72/0453 ,  H04W72/08

    Abstract: Provided are a method and apparatus for occupying an unlicensed carrier to send a discovery signal, and an access point. The method includes the following steps. A parameter of a discovery signal sent on an unlicensed carrier by an access point is configured. The access point sends the discovery signal on the unlicensed carrier. The technical solution of the present invention can reduce the time for processing items other than data sending (such as synchronization) after each time the access point preempts a resource, and can improve the spectral efficiency of the unlicensed carrier.

    Abstract translation: 提供了一种占用非授权载波发送发现信号的方法和装置以及接入点。 该方法包括以下步骤。 配置接入点在非授权载波上发送的发现信号的参数。 接入点在非授权载波上发送发现信号。 本发明的技术方案可以在每次接入点抢占资源后，减少处理除数据发送之外的其他项目（如同步）的时间，并且可以提高免许可载波的频谱效率。

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