Method and system for economical beam forming in a radio communication system
    51.
    发明申请
    Method and system for economical beam forming in a radio communication system 审中-公开
    无线电通信系统中经济波束形成的方法和系统

    公开(公告)号:US20060104197A1

    公开(公告)日:2006-05-18

    申请号:US11320377

    申请日:2005-12-28

    Abstract: Individual RF cables span between element/transceiver pairs in traditional beam forming systems, and the number of elements in an array used for beam forming is thus restricted. To reduce the number of RF cables but maintain or increase the number of elements in an antenna array, an embodiment of the present invention includes electronics at the base of an antenna tower that apply digital multiplexing codes to signals communicated to electronics located at the top of the antenna tower. The electronics at the top demultiplex the signals and transmit them via the antenna array. Received RF signals are processed in a like manner in a reverse direction. Fewer transmission paths (e.g., RF or fiber optic cables) than the number of elements in the antenna array can be used. More antenna elements provide benefits, such as higher user capacity, more antenna beams, narrower antenna beams, and higher in-building penetration.

    Abstract translation: 传统的波束形成系统中的单个RF电缆跨越元件/收发器对之间,因此限制了用于波束成形的阵列中的元件的数量。 为了减少RF电缆的数量,但是维持或增加天线阵列中的元件的数量,本发明的实施例包括在天线塔底部的电子设备,其将数字多路复用码应用于传送到位于 天线塔。 顶部的电子设备将信号解复用并通过天线阵列发送信号。 接收的RF信号以相反的方向以类似的方式被处理。 可以使用比天线阵列中的元件的数量少的传输路径(例如,RF或光纤电缆)。 更多的天线元件提供了诸如更高的用户容量,更多的天线波束,更窄的天线波束和更高的建筑物内穿透性的益处。

    Qualifying available reverse link coding rates from access channel power setting

    公开(公告)号:US20060088021A1

    公开(公告)日:2006-04-27

    申请号:US11295270

    申请日:2005-12-06

    Abstract: Data rate allocation decisions are made for a communications channel, such as a wireless reverse link connection. A first parameter used in this determination is a path loss, which is determined by the following process. First, a message is sent from a first station to a second station, such as on a paging channel. The message indicates a forward Effective Radiated Power (ERP) of a pilot signal transmitted by the first station. The second station then determines the received signal strength of this pilot signal, taking into account receiver gains. The path loss can then be estimated by the second station as the difference between the forward ERP data value that it received and the detected received pilot power. The second station also then preferably determines a transmit power level when transmitting a message back to the first station. This transmit power level information is encoded as a digital data word together with the forward path loss information as calculated by the first station. Upon receipt of these two pieces of information by the first station, the forward path loss estimate as calculated by the second station, and the output power value of the second station, the first station can then determine the amount of excess power available at the field unit. This excess power difference is indicative of the amount of dynamic range available in the transmit power amplifier in the particular second station. With this information, the first station can then make a determination as to whether coding rates which require a higher dynamic range will be acceptable for use by the particular second station.

    Wireless local area network repeater with in-band control channel
    53.
    发明申请
    Wireless local area network repeater with in-band control channel 审中-公开
    具有带内控制通道的无线局域网中继器

    公开(公告)号:US20060063484A1

    公开(公告)日:2006-03-23

    申请号:US10531077

    申请日:2003-10-24

    Abstract: A frequency translating repeater (200) for use in a WLAN environment includes an in-band management link. A signal received on an antenna (300) is split to provide signal detection in a detection and control unit (385) wherein detection is performed by detectors (370, 371) filters (375, 376), converters (380, 381) and a processor (385). Delay is added using delay lines (360, 361). The in-band signal envelope may be modulated with variable gain amplifier (330) and demodulated with detectors (370, 371) to establish the management link with higher protocol layer capability. Alternatively, a modern function at least partially compliant to 802.11 modulation may be used in parallel with the frequency translating repeater.

    Abstract translation: 用于WLAN环境的频率转换中继器(200)包括带内管理链路。 在天线(300)上接收的信号被分割以在检测和控制单元(385)中提供信号检测,其中通过检测器(370,371)滤波器(375,376),转换器(380,381)和 处理器(385)。 使用延迟线(360,361)添加延迟。 可以用可变增益放大器(330)对带内信号包络进行调制,并用检测器(370,371)解调,以建立具有更高协议层能力的管理链路。 或者,至少部分地符合802.11调制的现代功能可以与频率转换中继器并行使用。

    Wireless local area network repeater
    54.
    发明申请
    Wireless local area network repeater 失效
    无线局域网中继器

    公开(公告)号:US20050286448A1

    公开(公告)日:2005-12-29

    申请号:US10516327

    申请日:2003-06-11

    Abstract: A repeater (200) facilitates wireless communication between a first communication device (100) and a second communication device (105) in a wireless network using a time division duplex protocol for data transmission. The repeater (200) includes a receiver (310, 315) for receiving a signal on either of at least two bi-directional communication frequencies simultaneously. A signal detector (362) is operatively coupled to the receiver (300, 310, 315) for determining if the signal is present on at least one of the two bi-directional frequencies. A frequency converter (320, 321, 323, 324, 360, 361) is for converting the signal present on one of the bi-directional frequencies to a converted signal on the other of the bi-directional frequencies. A transmitter (300, 325, 330, 335, 345, 350) is for transmitting the converted signal on the other of said bi-directional frequencies.

    Abstract translation: 中继器(200)利用用于数据传输的时分双工协议,促进无线网络中的第一通信设备(100)和第二通信设备(105)之间的无线通信。 中继器(200)包括用于同时在至少两个双向通信频率中的任一个上接收信号的接收机(310,315)。 信号检测器(362)可操作地耦合到接收器(300,310,315),用于确定信号是否存在于两个双向频率中的至少一个上。 频率转换器(320,321,323,324,360,361)用于将存在于双向频率之一上的信号转换为双向频率上的另一个上的转换信号。 发射机(300,325,330,335,345,350)用于在所述双向频率中的另一个频率上传输转换的信号。

    Application specific traffic optimization in a wireless link
    55.
    发明申请
    Application specific traffic optimization in a wireless link 有权
    无线链路中的应用特定流量优化

    公开(公告)号:US20050265246A1

    公开(公告)日:2005-12-01

    申请号:US11193587

    申请日:2005-07-29

    Abstract: A packet data system such as a TCP/IP network transmits packets containing a variety of data types along links in the network. Packets are transmitted in a stream between nodes interconnected by the links, which conform to a transport layer protocol such as TCP, UDP, and RSTP, and include wireless links, which transmit packets using a radio frequency (RF) medium. Typical protocols, however, are usually developed to optimize throughput and minimize data error and loss over wired links, and do not lend themselves well to a wireless link. By examining the data in a packet, performance characteristics such as a port number are determined. The performance characteristics indicate the application type, and therefore, the data type, of the packets carried on the connection. Since certain data types, such as streaming audio and video, are more loss tolerant, determination of the data type is used to compute link control parameters for the wireless link that are optimal to the type of data being transmitted over the link.

    Abstract translation: 诸如TCP / IP网络的分组数据系统沿着网络中的链路发送包含各种数据类型的分组。 分组在通过链路互连的节点之间的流中传输,所述链路符合诸如TCP,UDP和RSTP之类的传输层协议,并且包括使用射频(RF)介质传输分组的无线链路。 然而,通常开发典型的协议是为了优化吞吐量,并通过有线链路最小化数据错误和损失,并且不适合于无线链路。 通过检查数据包中的数据,确定端口号等性能特征。 性能特征表示连接上携带的分组的应用类型,因此表示数据类型。 由于诸如流音频和视频之类的某些数据类型具有更大的容错能力,所以使用数据类型的确定来计算无线链路的链路控制参数,这些链路控制参数对于通过链路传输的数据类型是最佳的。

    Electronic phase shifter with enhanced phase shift performance

    公开(公告)号:US20050104687A1

    公开(公告)日:2005-05-19

    申请号:US11022483

    申请日:2004-12-22

    CPC classification number: H01P1/185

    Abstract: A varactor based phase shifter that increases phase shift range using a lower characteristic impedance between quadrature ports than is used at its input/output ports. The circuit makes use of a four port coupler arrangement that imbeds a quarter wave impedance transformation between the input port and the quadrature ports as well as between the quadrature ports and the output port. The characteristic impedance across the quadrature ports is therefore less than the characteristic impedance across the input and output ports. In one implementation, reducing a characteristic input/output impedance of 50 to a 20 ohm quadrature port impedance results in a phase shift range increase of more than 50%.

    Method and apparatus for adapting antenna array using received perdetermined signal
    59.
    发明申请
    Method and apparatus for adapting antenna array using received perdetermined signal 失效
    使用接收的确定信号适配天线阵列的方法和装置

    公开(公告)号:US20050068231A1

    公开(公告)日:2005-03-31

    申请号:US10914982

    申请日:2004-08-10

    Abstract: An antenna apparatus that can increase capacity in a wireless communication system is disclosed. The antenna operates in conjunction with a station and comprises a plurality of antenna elements, each coupled to a respective weight control component to provide a weight to the signal transmitted from (or received by) each element. The weight for each antenna element is adjusted to achieve optimum reception during, for example, an idle mode when a pilot signal is received. The antenna array creates a beam former for signals to be transmitted from the mobile station, and a directional receiving array to more optimally detect and receive signals transmitted from the base station. By directionally receiving and transmitting signals, multipath fading and intercell interference are greatly reduced. The weights are adjusted in a coarse and a fine mode. In the coarse mode all the weight control components are jointly adjusted or changed so that the antenna beam scans through a predetermined sector of a circle until a signal quality metric of the received signal is optimized. The coarse adjustment mode is followed by a fine adjustment mode during which the weights of are independently adjusted to further optimize the signal quality metric.

    Abstract translation: 公开了一种可以增加无线通信系统中的容量的天线装置。 天线与站一起工作,并且包括多个天线元件,每个天线元件耦合到相应的加权控制部件,以向从每个元件(或由每个元件接收)发送的信号提供权重。 当接收到导频信号时,调整每个天线元件的权重以在例如空闲模式期间实现最佳接收。 天线阵列产生用于要从移动台发送的信号的波束形成器,以及用于更好地检测和接收从基站发送的信号的定向接收阵列。 通过定向接收和发送信号,大大减少了多径衰落和小区间干扰。 重量在粗调和精细模式下进行调整。 在粗略模式中,所有的权重控制分量被共同调整或改变,使得天线波束扫过预定的圆圈,直到接收信号的信号质量度量被优化。 粗调模式之后是精细调整模式,其中独立调整权重以进一步优化信号质量度量。

    System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system
    60.
    发明申请
    System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system 有权
    用于通过CDMA无线通信系统的反向链路维持同步消息定时的系统和方法

    公开(公告)号:US20050013284A1

    公开(公告)日:2005-01-20

    申请号:US10895591

    申请日:2004-07-21

    Applicant: James Proctor

    Inventor: James Proctor

    CPC classification number: H04J13/18 H04B1/7085 H04J13/0022 H04W74/00

    Abstract: A method for operating a subscriber unit that communicates with a code division multiple access (CDMA) wireless network is provided. At the subscriber unit, synchronization information is encoded with a CDMA code. The CDMA encoded synchronization information is transmitted from the subscriber unit in discrete repeating intervals. The discrete repeating intervals are separated by other discrete repeating intervals during which the subscriber unit does not transmit synchronization information.

    Abstract translation: 提供了一种用于操作与码分多址(CDMA)无线网络进行通信的用户单元的方法。 在用户单元处,用CDMA码对同步信息进行编码。 CDMA编码的同步信息以离散的重复间隔从用户单元发送。 离散的重复间隔由用户单元不发送同步信息的其他离散重复间隔隔开。

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