-
公开(公告)号：US08934855B2
公开(公告)日：2015-01-13
申请号：US12269236
申请日：2008-11-12
IPC分类号： H04B17/00 , H04W24/00 , H04M1/00 , G01S3/16 , H04W24/06 , H01Q1/12 , H01Q3/26 , H04W28/04 , H04W88/08 , H04W36/08 , H04W16/02
CPC分类号： H04W24/06 , H01Q1/1257 , H01Q3/267 , H04B17/318 , H04W16/02 , H04W24/00 , H04W28/04 , H04W36/08 , H04W88/08
摘要： A base station for use in a mobile telephony network includes an antenna arrangement coupled to a transceiver arrangement for producing a plurality of beams. A method of testing the base station comprises detecting at the transceiver arrangement the signal strengths of a test signal received via the beams; comparing and/or correlating the said signal strengths detected at the transceiver arrangement; and using the results of the comparisons and/or correlations to determine the configuration of the antenna arrangement and transceiver arrangement and/or to detect faults. The comparison of average signal strengths can be used to detect cabling faults, and beam errors. The correlation of un-averaged signal strengths can be used to determine which beams have the same polarization. Beam pointing directions and the allocation of antennas to sectors can be determined by monitoring handovers of mobiles moving between cells. Frequencies may be allocated to sectors according to a frequency re-use scheme.
摘要翻译： 用于移动电话网络的基站包括耦合到用于产生多个波束的收发器装置的天线装置。 一种测试基站的方法包括：在收发机装置处检测通过波束接收的测试信号的信号强度; 比较和/或关联在收发机设备处检测到的所述信号强度; 并且使用比较和/或相关的结果来确定天线布置和收发机布置的配置和/或检测故障。 平均信号强度的比较可用于检测布线故障和波束误差。 可以使用非平均信号强度的相关性来确定哪些光束具有相同的偏振。 光束指向方向和天线到扇区的分配可以通过监视在小区之间移动的移动台的切换来确定。 频率可以根据频率重用方案分配给扇区。
-
公开(公告)号：US4048975A
公开(公告)日：1977-09-20
申请号：US631213
申请日：1975-11-12
CPC分类号： F16J1/09 , F04B39/045 , F16J15/44
摘要： A piston such as is used in internal combustion engines, steam engines, gas engines, air engines, pumps, compressors and the like from which the usual piston rings are absent the sealing of the piston being affected by means of right and left hand intersecting helical channels formed on a portion of the surface of the piston wall.It is preferred that the helical channels terminate at each end in a circumferential groove. The sealing is effected by means of oil trapped by the channels between the piston wall and a cylinder in which the piston operates.
摘要翻译： 诸如用于内燃机，蒸汽发动机，燃气发动机，空气发动机，泵，压缩机等的活塞，其中不存在通常的活塞环，活塞的密封受到左右交叉螺旋的影响 通道形成在活塞壁表面的一部分上。
-
3.发明申请公开(公告)号：US20050122911A1
公开(公告)日：2005-06-09
申请号：US10730664
申请日：2003-12-08
申请人： Friedrich Beichter , John Hughes , Ravi Ranjan , Charles Shapley , James Urquhart , Brian Zerba
发明人： Friedrich Beichter , John Hughes , Ravi Ranjan , Charles Shapley , James Urquhart , Brian Zerba
CPC分类号： H04L41/0886 , H04L41/0846
摘要： Configuring of a communications environment is facilitated. A mapping tool is provided that aids in the configuring of various components of a communications environment, such as an input/output (I/O) subsystem of the environment. Data generated from an order process and a logical configuration definition are used as input to the mapping tool. The tool performs mapping and generates as output a physical configuration definition, and optionally, one or more reports. The mapping tool has a manual function, as well as an automatic function.
摘要翻译： 配置通信环境更加方便。 提供了一种映射工具，其有助于配置诸如环境的输入/输出（I / O）子系统之类的通信环境的各种组件。 从订单处理和逻辑配置定义生成的数据用作映射工具的输入。 该工具执行映射并生成物理配置定义的输出，以及可选的一个或多个报告。 映射工具具有手动功能以及自动功能。
-
公开(公告)号：US872166A
公开(公告)日：1907-11-26
申请号：US1907357234
申请日：1907-02-14
申请人： JAMES URQUHART
CPC分类号： A01D15/04
-
公开(公告)号：US20100120415A1
公开(公告)日：2010-05-13
申请号：US12269236
申请日：2008-11-12
IPC分类号： H04W24/00
CPC分类号： H04W24/06 , H01Q1/1257 , H01Q3/267 , H04B17/318 , H04W16/02 , H04W24/00 , H04W28/04 , H04W36/08 , H04W88/08
摘要： A base station for use in a mobile telephony network includes an antenna arrangement coupled to a transceiver arrangement for producing a plurality of beams. A method of testing the base station comprises detecting at the transceiver arrangement the signal strengths of a test signal received via the beams; comparing and/or correlating the said signal strengths detected at the transceiver arrangement; and using the results of the comparisons and/or correlations to determine the configuration of the antenna arrangement and transceiver arrangement and/or to detect faults. The comparison of average signal strengths can be used to detect cabling faults, and beam errors. The correlation of un-averaged signal strengths can be used to determine which beams have the same polarisation. Beam pointing directions and the allocation of antennas to sectors can be determined by monitoring handovers of mobiles moving between cells. Frequencies may be allocated to sectors according to a frequency re-use scheme.
摘要翻译： 用于移动电话网络的基站包括耦合到用于产生多个波束的收发器装置的天线装置。 一种测试基站的方法包括：在收发机装置处检测通过波束接收的测试信号的信号强度; 比较和/或关联在收发机设备处检测到的所述信号强度; 并且使用比较和/或相关的结果来确定天线布置和收发机布置的配置和/或检测故障。 平均信号强度的比较可用于检测布线故障和波束误差。 可以使用非平均信号强度的相关性来确定哪些光束具有相同的偏振。 光束指向方向和天线到扇区的分配可以通过监视在小区之间移动的移动台的切换来确定。 频率可以根据频率重用方案分配给扇区。
-
公开(公告)号：US4048908A
公开(公告)日：1977-09-20
申请号：US639045
申请日：1975-12-09
摘要： A piston for use in a hydraulic or other fluid operated device having sealing means intended to prevent the passage of working fluid between the piston and cylinder in which it moves consisting of the combination of at least one O ring or other sealing device arranged around the circumference of the piston and left and right hand intersecting helical channels formed over the length of the surface of the piston wall between the sealing device and the end of the piston subject to pressure of the working fluid. The helical channels act both to retain lubricating fluid and to provide a partial seal against the passage of working fluid between the piston and the cylinder, substantially complete sealing being effected by the sealing device.
摘要翻译： 一种用于液压或其他流体操作装置的活塞，其具有密封装置，其用于防止工作流体在其移动的活塞和气缸之间的通过，所述活塞和气缸在其周围布置有至少一个O形环或其它密封装置的组合 活塞和左右交叉的螺旋通道形成在密封装置和活塞端部之间的活塞壁的表面的长度上，受到工作流体的压力的影响。 螺旋通道用于保持润滑流体并且提供抵抗活塞和气缸之间的工作流体通过的部分密封，基本上完全由密封装置进行的密封。
-
7.发明授权Downlink and uplink array and beamforming arrangement for wireless communication networks 有权用于无线通信网络的下行链路和上行链路阵列和波束成形布置公开(公告)号：US08406812B2
公开(公告)日：2013-03-26
申请号：US12857622
申请日：2010-08-17
申请人： Martin Stevens Smith , Andrew James Urquhart , Julius George Robson , David Damian Nichols Bevan
发明人： Martin Stevens Smith , Andrew James Urquhart , Julius George Robson , David Damian Nichols Bevan
IPC分类号： H04B1/38
CPC分类号： H04W72/046 , H04B7/0408
摘要： The invention provides an antenna array suitable for use in a base station in a wireless communications network, the antenna array having a first beamforming arrangement for producing uplink beams and a second beamforming arrangement for producing downlink beams, wherein the first and second beamforming arrangements are different from one another. Preferably the first and second beamforming arrangements feed a common antenna array to produce the uplink and downlink beams. Particularly preferably a plurality of (sin x/x) beams are formed for the uplink, and a plurality of low cusp beams are formed for the downlink. These are advantageously dual polar, in order to achieve diversity gain. In a preferred embodiment, the antenna array is arranged such that three dual polar low cusp beams are formed for the downlink, and six dual polar (sin x/x) beams are formed for the uplink. A cellular communications network and a base station transceiver having such antenna arrays are also provided, as are a radio signal transmitted as a plurality of (sin x/x) beams forming an uplink of a cellular communications network, and a method of operating a wireless communications network.
摘要翻译： 本发明提供一种适用于无线通信网络中的基站的天线阵列，天线阵列具有用于产生上行链路波束的第一波束成形装置和用于产生下行链路波束的第二波束成形装置，其中第一和第二波束成形装置是不同的 从彼此。 优选地，第一和第二波束成形装置馈送公共天线阵列以产生上行链路和下行链路波束。 特别优选地，对于上行链路形成多个（sin x / x）个波束，并且为下行链路形成多个低端点波束。 这些有利地是双极化的，以便实现分集增益。 在优选实施例中，天线阵列被布置成使得为下行链路形成三个双极性低端点波束，并且为上行链路形成六个双极性（sin x / x）波束。 还提供了具有这种天线阵列的蜂窝通信网络和基站收发机，作为形成蜂窝通信网络的上行链路的多个（sin x / x）波束发送的无线电信号，以及操作无线 通讯网络
-
8.发明授权公开(公告)号：US07792547B1
公开(公告)日：2010-09-07
申请号：US10358914
申请日：2003-02-05
申请人： Martin Stevens Smith , Andrew James Urquhart , Julius George Robson , David Damain Nicholas Bevan
发明人： Martin Stevens Smith , Andrew James Urquhart , Julius George Robson , David Damain Nicholas Bevan
IPC分类号： H04M1/00
CPC分类号： H04W72/046 , H04B7/0408
摘要： The invention provides an antenna array suitable for use in a base station in a wireless communications network, the antenna array having a first beamforming arrangement for producing uplink beams and a second beamforming arrangement for producing downlink beams, wherein the first and second beamforming arrangements are different from one another. Preferably the first and second beamforming arrangements feed a common antenna array to produce the uplink and downlink beams. Particularly preferably a plurality of (sin x/x) beams are formed for the uplink, and a plurality of low cusp beams are formed for the downlink. These are advantageously dual polar, in order to achieve diversity gain. In a preferred embodiment, the antenna array is arranged such that three dual polar low cusp beams are formed for the downlink, and six dual polar (sin x/x) beams are formed for the uplink. A cellular communications network and a base station transceiver having such antenna arrays are also provided, as are a radio signal transmitted as a plurality of (sin x/x) beams forming an uplink of a cellular communications network, and a method of operating a wireless communications network.
-
9.发明申请Downlink and uplink array and beamforming arrangement for wireless communication networks 有权用于无线通信网络的下行链路和上行链路阵列和波束成形布置公开(公告)号：US20100311469A1
公开(公告)日：2010-12-09
申请号：US12857622
申请日：2010-08-17
申请人： Martin Stevens Smith , Andrew James Urquhart , Julius George Robson , David Damian Nichols Bevan
发明人： Martin Stevens Smith , Andrew James Urquhart , Julius George Robson , David Damian Nichols Bevan
IPC分类号： H04M1/00
CPC分类号： H04W72/046 , H04B7/0408
摘要： The invention provides an antenna array suitable for use in a base station in a wireless communications network, the antenna array having a first beamforming arrangement for producing uplink beams and a second beamforming arrangement for producing downlink beams, wherein the first and second beamforming arrangements are different from one another. Preferably the first and second beamforming arrangements feed a common antenna array to produce the uplink and downlink beams. Particularly preferably a plurality of (sin x/x) beams are formed for the uplink, and a plurality of low cusp beams are formed for the downlink. These are advantageously dual polar, in order to achieve diversity gain. In a preferred embodiment, the antenna array is arranged such that three dual polar low cusp beams are formed for the downlink, and six dual polar (sin x/x) beams are formed for the uplink. A cellular communications network and a base station transceiver having such antenna arrays are also provided, as are a radio signal transmitted as a plurality of (sin x/x) beams forming an uplink of a cellular communications network, and a method of operating a wireless communications network.
摘要翻译： 本发明提供一种适用于无线通信网络中的基站的天线阵列，天线阵列具有用于产生上行链路波束的第一波束成形装置和用于产生下行链路波束的第二波束成形装置，其中第一和第二波束成形装置是不同的 从彼此。 优选地，第一和第二波束成形装置馈送公共天线阵列以产生上行链路和下行链路波束。 特别优选地，对于上行链路形成多个（sin x / x）个波束，并且为下行链路形成多个低端点波束。 这些有利地是双极化的，以便实现分集增益。 在优选实施例中，天线阵列被布置成使得为下行链路形成三个双极性低端点波束，并且为上行链路形成六个双极性（sin x / x）波束。 还提供了具有这种天线阵列的蜂窝通信网络和基站收发机，作为形成蜂窝通信网络的上行链路的多个（sin x / x）波束发送的无线电信号，以及操作无线 通讯网络
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.015 秒)