Joint Carrier Allocation and Time Sharing for OFDMA/TDMA Networks
    1.
    发明申请
    Joint Carrier Allocation and Time Sharing for OFDMA/TDMA Networks 有权
    OFDMA / TDMA网络的联合载波分配和时间共享

    公开(公告)号:US20100189069A1

    公开(公告)日:2010-07-29

    申请号:US12359470

    申请日:2009-01-26

    IPC分类号: H04W72/04 H04L27/28

    摘要: A method and system provide multiple-access control and frequency band allocation, and transmission time sharing among multiple users in orthogonal frequency-division multiple-access (OFDMA) and time-division multiple-access (TDMA) networks. The method can be applied to uplinks and downlinks of multi-user, multi-carrier communication networks. Under a total transmission-power minimization constraint, the method can allocate carriers and transmission time to users optimally, and at the same time, can guarantee a data rate or equivalently a latency requirement of each user.

    摘要翻译: 一种方法和系统提供多路访问控制和频带分配,以及在正交频分多址(OFDMA)和时分多址(TDMA)网络中的多个用户之间的传输时间共享。 该方法可以应用于多用户,多载波通信网络的上行链路和下行链路。 在总传输功率最小化约束条件下,该方法可以最佳地向用户分配载波和传输时间,同时可以保证每个用户的数据速率或等效的等待时间要求。

    OFDMA based medium access control and frame structure design for industrial applications
    3.
    发明授权
    OFDMA based medium access control and frame structure design for industrial applications 有权
    基于OFDMA的媒体访问控制和工业应用的框架结构设计

    公开(公告)号:US08218661B2

    公开(公告)日:2012-07-10

    申请号:US12347087

    申请日:2008-12-31

    IPC分类号: H04L27/28

    摘要: A network includes a master and a set of slaves that communicate orthogonal frequency-division multiplexing (OFDM) and time division multiple access (TDMA) symbols on sub-carriers. A master broadcasts to the set of slaves using downlinks and all of the sub-carriers, a broadcast polling packet including data packets for each slave and sub-carrier assignments for the slaves. Each slave, in response to receiving the downlink polling packet, transmits simultaneously a response packet to the master using uplinks and the assigned sub-carriers. The master then transmits to the set of slave using the downlinks and all of the sub-carriers, a group acknowledgement packet, wherein the broadcast polling packet, the response packet, and the group acknowledgement packet comprise one superframe in one communication cycle, and wherein the broadcasting on the downlinks and the transmitting on the uplinks are disjoint in time.

    摘要翻译: 网络包括在子载波上传送正交频分复用(OFDM)和时分多址(TDMA)符号的主机和一组从机。 主机使用下行链路和所有子载波来广播到一组从站,包括用于每个从站的数据分组的广播轮询分组以及从站的副载波分配。 响应于接收到下行链路轮询分组,每个从机使用上行链路和所分配的子载波同时向主机发送响应分组。 然后,主机然后使用下行链路和所有子载波(其中广播轮询分组,响应分组和组确认分组在一个通信周期中包括一个超帧)发送到所述一组从机,并且其中 在下行链路上的广播和在上行链路上的发送是不相交的。

    OFDMA Based Medium Access Control and Frame Structure Design for Industrial Applications
    4.
    发明申请
    OFDMA Based Medium Access Control and Frame Structure Design for Industrial Applications 有权
    基于OFDMA的媒体访问控制和工业应用的框架结构设计

    公开(公告)号:US20090238293A1

    公开(公告)日:2009-09-24

    申请号:US12347087

    申请日:2008-12-31

    IPC分类号: H04L27/28 H04J3/00

    摘要: A network includes a master and a set of slaves that communicate orthogonal frequency-division multiplexing (OFDM) and time division multiple access (TDMA) symbols on sub-carriers. A master broadcasts to the set of slaves using downlinks and all of the sub-carriers, a broadcast polling packet including data packets for each slave and sub-carrier assignments for the slaves. Each slave, in response to receiving the downlink polling packet, transmits simultaneously a response packet to the master using uplinks and the assigned sub-carriers. The master then transmits to the set of slave using the downlinks and all of the sub-carriers, a group acknowledgement packet, wherein the broadcast polling packet, the response packet, and the group acknowledgement packet comprise one superframe in one communication cycle, and wherein the broadcasting on the downlinks and the transmitting on the uplinks are disjoint in time.

    摘要翻译: 网络包括在子载波上传送正交频分复用(OFDM)和时分多址(TDMA)符号的主机和一组从机。 主机使用下行链路和所有子载波来广播到一组从站,包括用于每个从站的数据分组的广播轮询分组以及从站的副载波分配。 响应于接收到下行链路轮询分组,每个从机使用上行链路和所分配的子载波同时向主机发送响应分组。 然后,主机然后使用下行链路和所有子载波(其中广播轮询分组,响应分组和组确认分组在一个通信周期中包括一个超帧)发送到所述一组从机,并且其中 在下行链路上的广播和在上行链路上的发送是不相交的。

    A CYCLE POWER GENERATION DEVICE
    5.
    发明公开

    公开(公告)号:US20240195330A1

    公开(公告)日:2024-06-13

    申请号:US17794923

    申请日:2022-01-20

    申请人: Yi Huang

    发明人: Yi Huang

    IPC分类号: H02N11/00

    摘要: The invention discloses a cycle power generation device, comprising a battery, a motor and a generator. The battery is a rechargeable battery and is connected with the motor through a power transmission line. The motor drives the generator to rotate, and the electricity returns to the motor through the power transmission line in series after producing electricity, thereby achieving the cycle power generation by driving the motor. The battery is provided for starting the motor at the initial stage, and the motor is driven by the electricity from the generator instead of the battery, after driving the generator to produce electricity by rotating the motor. The electricity produced by the generator is linearly transmitted to the motor, and the motor drives the generator to generate electricity, which is the cycle power generation.

    Methods and apparatuses for frequency spectrum sharing
    8.
    发明授权
    Methods and apparatuses for frequency spectrum sharing 有权
    用于频谱共享的方法和装置

    公开(公告)号:US09578515B2

    公开(公告)日:2017-02-21

    申请号:US13469064

    申请日:2012-05-10

    CPC分类号: H04W16/14 H04W16/06 H04W36/22

    摘要: Techniques are provided for frequency spectrum sharing that allows secondary operators to access a frequency band of a primary operator without interfering with the primary operator's use of the band, while ensuring service continuity for devices of the secondary operators. For example, there is provided a method that may involve identifying an outage on a first channel of a plurality of channels of a spectrum, wherein each of the plurality of channels is allocated to one of a plurality of operators. The method may involve migrating all mobile stations in communication over the first channel of the plurality of channels to at least one other channel of the plurality of channels during the outage.

    摘要翻译: 提供了用于频谱共享的技术,其允许次要运营商访问主运营商的频带,而不干扰主运营商对频带的使用,同时确保辅助运营商的设备的业务连续性。 例如,提供了一种方法,其可以涉及识别频谱的多个信道的第一信道上的中断,其中多个信道中的每一个被分配给多个运营商之一。 该方法可以包括将在多个信道的第一信道上通信的所有移动站迁移到多个信道中的至少一个其它信道。

    Method and apparatus for monitoring electron beam condition of scanning electron microscope
    10.
    发明授权
    Method and apparatus for monitoring electron beam condition of scanning electron microscope 有权
    用于监测扫描电子显微镜电子束条件的方法和装置

    公开(公告)号:US08829424B2

    公开(公告)日:2014-09-09

    申请号:US13756148

    申请日:2013-01-31

    申请人: BoXiu Cai Yi Huang

    发明人: BoXiu Cai Yi Huang

    IPC分类号: G01D18/00 H01J37/26

    摘要: A method and an apparatus for monitoring an electron beam condition of an SEM are provided. The SEM includes an electron gun and an electromagnetic lens system. The method includes acquiring quality parameters of an input electron beam, wherein the input electron beam is provided by the electron gun to the electromagnetic lens system, acquiring a current set of operation parameters of the electromagnetic lens system, calculating quality parameters of an output electron beam of the electromagnetic lens system, based on the quality parameters of the input electron beam and one or more operation parameters of the current set of operation parameters, and determining, based on the quality parameters of the output electron beam, whether calibration of the SEM is required.

    摘要翻译: 提供了一种用于监测SEM的电子束条件的方法和装置。 SEM包括电子枪和电磁透镜系统。 该方法包括获取输入电子束的质量参数,其中输入电子束由电子枪提供给电磁透镜系统,获取电磁透镜系统的当前一组操作参数,计算输出电子束的质量参数 基于输入电子束的质量参数和当前操作参数组的一个或多个操作参数,并且基于输出电子束的质量参数确定SEM的校准是否为 需要。