Quasi synchronous transmission in cellular networks
    21.
    发明申请
    Quasi synchronous transmission in cellular networks 有权
    蜂窝网络中的准同步传输

    公开(公告)号:US20070171853A1

    公开(公告)日:2007-07-26

    申请号:US11338062

    申请日:2006-01-23

    IPC分类号: H04Q7/00

    CPC分类号: H04B7/269 H04H20/18 H04H20/67

    摘要: Aspects of the invention include a root node of a wireless communication infrastructure that buffers data packets for transmission by base stations over an air interface. The root node determines a time delay for transmission of a data packet from the root node to each base station, a maximum time delay of those time delays, and a timing latency based upon the maximum time delay. The root node transmits the timing latency to the base stations. In response, each base station initiates transmission of data packets received by the root node after expiration of the timing latency. Alternatively, the root node, instead of the base stations, may buffer the data packets, and transmit them so that they arrive at the base stations at substantially the same time.

    摘要翻译: 本发明的方面包括缓冲用于基站通过空中接口传输的数据分组的无线通信基础设施的根节点。 根节点确定用于从根节点向每个基站传输数据分组的时间延迟,那些时间延迟的最大时间延迟以及基于最大时延的定时等待时间。 根节点向基站发送定时等待时间。 作为响应,每个基站在定时等待时间到期之后发起由根节点接收的数据分组的传输。 或者,根节点(而不是基站)可以缓冲数据分组,并且发送它们使得它们在基本相同的时间到达基站。

    Interference mitigation for orthogonal frequency division multiplexing communication
    22.
    发明申请
    Interference mitigation for orthogonal frequency division multiplexing communication 有权
    正交频分复用通信的干扰减轻

    公开(公告)号:US20070025454A1

    公开(公告)日:2007-02-01

    申请号:US11190287

    申请日:2005-07-26

    IPC分类号: H04K1/10

    摘要: An Orthogonal Frequency Division Multiplex (OFDM) communication system comprises OFDM transmitters (103-109) and an OFDM receiver (101). The system comprises a subcarrier status data controller (200) for transmitting subcarrier status data to the OFDM receiver (101). The subcarrier status data indicates the active subcarriers of the OFDM transmitters (103-109). The OFDM receiver (101) comprises a receiver (201) which receives a signal comprising a desired signal component from a first OFDM transmitter (103) and interference from at least one interfering OFDM transmitter (105). The OFDM receiver (101) further comprises a subcarrier status processor (203) which receives the subcarrier status data and a channel estimator (205) which determines channel estimates for at least an air interface communication channel from the first OFDM transmitter (103) and an air interface communication channel from the interfering OFDM transmitter (105). An interference mitigation processor (207) performs interference mitigation of the interference in response to the subcarrier status data and the channel estimates thereby providing improved recovery of the data from the first OFDM transmitter (103).

    摘要翻译: 正交频分复用(OFDM)通信系统包括OFDM发射机(103-109)和OFDM接收机(101)。 该系统包括用于向OFDM接收机(101)发送子载波状态数据的副载波状态数据控制器(200)。 子载波状态数据指示OFDM发射机的有效子载波(103-109)。 OFDM接收器(101)包括接收器(201),其接收包括来自第一OFDM发射机(103)的期望信号分量的信号和来自至少一个干扰OFDM发射机(105)的干扰。 OFDM接收机(101)还包括接收子载波状态数据的子载波状态处理器(203)和确定来自第一OFDM发射机(103)的至少一个空中接口通信信道的信道估计的信道估计器(205) 来自干扰OFDM发射机(105)的空中接口通信信道。 干扰减轻处理器(207)响应于子载波状态数据和信道估计来执行干扰的干扰减轻,从而提供来自第一OFDM发射机(103)的数据的改进的恢复。

    Filter for multicarrier communication system and method for peak power
control therein
    23.
    发明授权
    Filter for multicarrier communication system and method for peak power control therein 失效
    多载波通信系统滤波器及其峰值功率控制方法

    公开(公告)号:US6128351A

    公开(公告)日:2000-10-03

    申请号:US973883

    申请日:1998-06-21

    摘要: A communication device (60) for simultaneously transmitting independent information (82) on multiple channels comprises a modulator (66) and at least two matched filters (68-70). Each matched filter has a unique predetermined characteristic that is a time-reversed, complex conjugate of a complex waveform shape (72) produced by the modulator (66) in response to a channel encoder previously supplying known codeword vectors (75) to the modulator (66). Therefore, a composite signal envelope (82) produced for transmission by the communication device (60) of FIG. 4 has a reduced peak-to-mean envelope power ratio (PMEPR), since relatively large excursions in complex waveform shapes subsequently generated by the modulator (66) are unmatched by the unique filter characteristics while relatively small excursion are matched and therefore enhanced.

    摘要翻译: PCT No.PCT / EP97 / 02486 Sec。 371日期:1998年6月4日 102(e)日期1998年6月4日PCT提交1997年5月15日PCT公布。 公开号WO97 / 45987 日期1997年12月4日用于在多个信道上同时发送独立信息(82)的通信设备(60)包括调制器(66)和至少两个匹配滤波器(68-70)。 每个匹配滤波器具有独特的预定特性,其是响应于先前向调制器提供已知码字矢量(75)的信道编码器,由调制器(66)产生的复数波形形状(72)的时间反转的复共轭, 66)。 因此,生成用于由图1的通信设备(60)发送的复合信号包络(82)。 由于由调制器(66)随后产生的复杂波形形状的相对大的偏移不同于独特的滤波器特性,而相对较小的偏移匹配并因此增强,因此图4具有降低的峰值平均包络功率比(PMEPR)。

    SANITIZING FENDER FOR A WHEELCHAIR
    24.
    发明申请

    公开(公告)号:US20220362414A1

    公开(公告)日:2022-11-17

    申请号:US17525330

    申请日:2021-11-12

    IPC分类号: A61L2/10 A61G5/02 A61G5/10

    摘要: A fender for sanitizing wheels of a wheelchair including a support frame and a fender housing. The support frame includes a mounting bracket for mounting the support frame on a vertical frame on the rear portion of the wheelchair. The fender housing is removably mounted on the support frame. The fender housing includes a plurality of Ultraviolet-C (UVC) light sources powered by a re-chargeable battery and a driver circuit. The plurality of UVC light sources are configured to sanitize a surface of a wheel of the wheelchair by virtue of illumination of surface of the wheel during rotation of the wheel.

    Method for non-invasive determination of chemical properties of aqueous solutions
    25.
    发明授权
    Method for non-invasive determination of chemical properties of aqueous solutions 有权
    非侵入性测定水溶液化学性质的方法

    公开(公告)号:US09372157B1

    公开(公告)日:2016-06-21

    申请号:US13174124

    申请日:2011-06-30

    摘要: A method for non-invasively determining a chemical property of an aqueous solution is provided. The method provides the steps of providing a colored solute having a light absorbance spectrum and transmitting light through the colored solute at two different wavelengths. The method further provides the steps of measuring light absorbance of the colored solute at the two different transmitted light wavelengths, and comparing the light absorbance of the colored solute at the two different wavelengths to determine a chemical property of an aqueous solution.

    摘要翻译: 提供了非侵入性地确定水溶液的化学性质的方法。 该方法提供了提供具有吸光光谱并且以两种不同波长透过着色溶质透射光的着色溶质的步骤。 该方法还提供了测量两种不同透射光波长下的着色溶质的光吸收率的步骤,并比较了两种不同波长下的着色溶质的吸光度,以确定水溶液的化学性质。

    Bicone pattern shaping device
    26.
    发明授权
    Bicone pattern shaping device 有权
    Bicone图案整形装置

    公开(公告)号:US07525501B2

    公开(公告)日:2009-04-28

    申请号:US11706580

    申请日:2007-02-12

    IPC分类号: H01Q13/00 H01Q15/02

    CPC分类号: H01Q9/28 H01Q19/062

    摘要: A broadband omni-directional bicone antenna. The antenna can comprise conductive surfaces of conical voids provided within a solid dielectric structure. The outside surface of the solid structure can support a radio frequency (RF) lens geometry operable for beam forming. The beam forming can modify the elevation pattern of the electromagnetic radiation from the bicone antenna. The solid dielectric structure may be machined or molded from a single piece of material. The conical voids provided within the solid structure can be metallized to provide conductive bicone radiators. The outer surface beam shaping lenses can be zoned or continuous and can provide elevation patterns with increased gain, cosecant squared falloff, or various other patterns. The beam shaping lens may be formed from any low-loss dielectric. Alternatively, the lens may be formed from a less dense material such as dielectric foam that can support radial conductive beam forming vanes.

    摘要翻译: 宽带全向双向天线。 天线可以包括设置在固体电介质结构内的锥形空隙的导电表面。 固体结构的外表面可以支持用于波束形成的射频(RF)透镜几何形状。 波束形成可以修改来自二极管天线的电磁辐射的仰角图。 固体电介质结构可以由单片材料加工或模制。 提供在固体结构内的锥形空隙可以被金属化以提供导电的二元散热器。 外表面光束整形透镜可以划分或连续,并且可以提供具有增加的增益,舒适平方衰减或各种其它图案的高程图案。 光束整形透镜可以由任何低损耗电介质形成。 或者,透镜可以由较不致密的材料形成,例如可以支撑径向导电波束形成叶片的电介质泡沫。

    Apparatus for and Method of Predicting a Future Behaviour of an Object
    27.
    发明申请
    Apparatus for and Method of Predicting a Future Behaviour of an Object 有权
    用于预测对象的未来行为的装置和方法

    公开(公告)号:US20070294030A1

    公开(公告)日:2007-12-20

    申请号:US11574625

    申请日:2005-09-06

    申请人: Alan Jones

    发明人: Alan Jones

    IPC分类号: G01C21/34

    摘要: An apparatus is provided for predicting the future behaviour of an object such as a vehicle. A location and time determining system, such as a GPS receiver (6), determines the geographical location of the vehicle and the current time and supplies this to a processor, such as a computer (1) with a program memory (2). The processor periodically records the location and time to form a record of sightings of the vehicle. The processor (1, 2) compares a sequence of recent sightings waith earlier recorded sightings from the record to find matching sequences which represent journey segments which match over a predetermined minimum distance. The processor (1, 2) retrieves some of the sightings which follow the matching sequences and derives from these a prediction of the future behaviour, for example possible future routes and destinations of the vehicle.

    摘要翻译: 提供了一种用于预测诸如车辆的物体的未来行为的装置。 诸如GPS接收器(6)的位置和时间确定系统确定车辆的地理位置和当前时间,并将其提供给具有程序存储器(2)的诸如计算机(1)的处理器。 处理器定期记录位置和时间以形成车辆瞄准记录。 处理器(1,2)将来自记录的先前记录的目击信息的最近发现的序列进行比较,以找到表示在预定的最小距离上匹配的行程段的匹配序列。 处理器(1,2)检索跟随匹配序列的一些目标,并从这些目标中得出未来行为的预测,例如可能的未来路线和车辆的目的地。

    Head assignment system and method
    28.
    发明申请
    Head assignment system and method 有权
    头部分配系统和方法

    公开(公告)号:US20070144676A1

    公开(公告)日:2007-06-28

    申请号:US11315101

    申请日:2005-12-23

    IPC分类号: B29C53/82

    CPC分类号: B29C70/386

    摘要: To generate course head assignments for a multihead composite material application machine having a set of heads, a set of paths for a ply for a composite part is received and it is determined whether each path of the set of paths complies with a head characteristic for the set of heads. In addition, a special head of the set of heads is assigned to a non-standard path of the set of paths in response to determining the non-standard path does not comply with the head characteristic and ones of the set of heads are assigned to corresponding ones of the set of paths in response to the ones of the set of paths being in compliance with the head characteristics. Furthermore, a constellation of head locations is calculated in response to the set of paths being in compliance with the head characteristic and the set of heads are assigned to the constellation of head locations in response to calculating the constellation of head locations.

    摘要翻译: 为了为具有一组头部的多头复合材料应用机器生成路线头分配,接收用于复合部件的层的一组路径,并且确定该组路径中的每个路径是否符合 一套头 此外,响应于确定非标准路径不符合头部特性而将该组头部的特殊头部分配给该组路径的非标准路径,并且将该组头部中的一个分配给 响应于该组路径中的路径符合头部特征的路径组中的相应路径。 此外,响应于一组路径符合头部特性来计算头部位置的星座,并且响应于计算头部位置的星座,将该组头部分配给头部位置的星座。

    Cooling systems
    29.
    发明申请
    Cooling systems 有权
    冷却系统

    公开(公告)号:US20070044451A1

    公开(公告)日:2007-03-01

    申请号:US11174740

    申请日:2005-07-06

    申请人: Alan Jones

    发明人: Alan Jones

    IPC分类号: F02K3/04

    摘要: Apparatus for maintaining the temperature of a component of a gas turbine engine below a predetermined maximum working temperature comprises a reservoir for a cooling fluid having a boiling point below the working temperature and in which the component is immersed or with which it is in contact. At least two heat exchangers are associated with the reservoir and operable to effect condensation of vaporised cooling fluid and return of same to the reservoir. Preferably the apparatus is a closed system incorporating three heat exchangers respectively adapted to effect heat exchange with engine fuel, compressed air derived from A fan or low pressure compressor of the engine and ambient air. Means may advantageously be provided to ensure return of condensed cooling fluid to the reservoir when the attitude of the reservoir is altered as a result of aircraft manoeuvres.

    摘要翻译: 用于将燃气涡轮发动机的部件的温度维持在预定的最大工作温度以下的装置包括用于冷却流体的储存器,该储存器的沸点低于工作温度,并且该部件浸入其中或与其接触。 至少两个热交换器与储存器相关联并且可操作以实现蒸发的冷却流体的冷凝并将其返回到储存器。 优选地,该装置是包括三个热交换器的封闭系统,其分别适于与发动机燃料进行热交换,来自A风扇或发动机的低压压缩机的压缩空气和环境空气。 可以有利地提供装置,以当储存器的姿态由于飞机机动而改变时,确保冷凝的冷却流体返回到储存器。

    Method and arrangement for mitigation of intercell interference in a cellular communication system
    30.
    发明申请
    Method and arrangement for mitigation of intercell interference in a cellular communication system 有权
    用于减轻蜂窝通信系统中的小区间干扰的方法和装置

    公开(公告)号:US20050232195A1

    公开(公告)日:2005-10-20

    申请号:US11071954

    申请日:2005-03-03

    申请人: Alan Jones

    发明人: Alan Jones

    IPC分类号: H04B1/707 H04Q7/00

    摘要: A method (400) and arrangement (200) for mitigation of intercell and intracell interference in a 3GPP cellular communication system (100) by, in a receiver in a cell of the system, deriving for a first channel in the cell a signal, representative of first channel transfer function (A(1)); deriving for at least a second channel originating in a different cell a signal (A(2 . . . M)), representative of second channel transfer function, based on: deriving a cell specific scrambling code (s), deriving a channel impulse response (h), and deriving a channelisation code (c); and performing multi-user detection using the first and second signals. Where the channelisation code is unknown, a substitute channelisation code is preferably substituted. It will be appreciated that the technique can be applied to both downlink and uplink. This provides the advantage that both intra-cell interference and intercell interference are mitigated.

    摘要翻译: 一种用于在3GPP蜂窝通信系统(100)中通过在系统的小区中的接收机中缓解小区内的小区间干扰和小区间干扰的方法(400)和装置(200),为小区中的第一信道导出信号,代表 的第一通道传递函数(A (1)); 基于以下方式导出代表第二信道传递函数的信号(A SUP)(2(... M)),所述信号源自不同小区的至少第二信道,导出小区特定扰码 ),导出信道脉冲响应(h),以及导出信道化码(c); 以及使用第一和第二信号执行多用户检测。 在信道化代码未知的情况下,优选地替换替代信道化码。 应当理解,该技术可以应用于下行链路和上行链路两者。 这提供了细胞间干扰和小区间干扰都被减轻的优点。