Alternate channel for carrying selected message types
    121.
    发明授权
    Alternate channel for carrying selected message types 有权
    用于携带所选消息类型的备用信道

    公开(公告)号:US07502351B2

    公开(公告)日:2009-03-10

    申请号:US11235725

    申请日:2005-09-26

    Abstract: In an illustrative embodiment of the present invention, a channel is allocated to carry messages from each of multiple subscriber units to a base station. Selected messages generated by a subscriber unit that would otherwise be transmitted over an assigned reverse link traffic channel are instead encoded and transmitted to the base station over a shared reverse link channel. Preferably, the shared reverse link channel is time-slotted and each subscriber unit transmits information to the base station in an assigned time slot so that the base station receiving the messages can identify from which subscriber unit a message is sent. Certain bits in a time slot of the shared channel as set by a subscriber unit can be used to communicate a particular message to the base station. For instance, a single bit that is transmitted in a time slot can be encoded to transmit a substitute message from one of the multiple subscriber units to a base station, where the setting of the bit itself indicates a message type.

    Abstract translation: 在本发明的说明性实施例中,分配一个信道以将来自多个用户单元中的每一个的消息传送到基站。 由订户单元生成的否则将通过分配的反向链路业务信道发送的所选择的消息被编码并通过共享反向链路信道发送到基站。 优选地,共享的反向链路信道是时隙的,并且每个用户单元在分配的时隙中向基站发送信息,使得接收消息的基站可以从哪个订户单元识别出消息被发送。 可以使用由用户单元设置的共享信道的时隙中的某些比特来将特定消息传送到基站。 例如,可以编码在时隙中发送的单个比特以将替代消息从多个用户单元之一发送到基站,其中比特本身的设置表示消息类型。

    Staggering forward and reverse wireless channel allocation timing
    123.
    发明授权
    Staggering forward and reverse wireless channel allocation timing 有权
    无线正向和反向无线信道分配定时

    公开(公告)号:US07433340B1

    公开(公告)日:2008-10-07

    申请号:US09691874

    申请日:2000-10-19

    CPC classification number: H04W72/1263 H04W80/06

    Abstract: A system and method for staggering forward and reverse channel time slot allocation in a wireless communication allows a wireless communication unit, such as a base station processor or a subscriber access unit, to transmit a return message in less than a full time slot interval. Forward and reverse channel allocation occurs as a cycle of time slots occurring at periodic timing intervals. Transmission of a wireless frame carrying a message payload occurs at the beginning of the time slot. Since the forward and reverse channel allocation cycles need not be concurrent, or in phase, these cycles may be staggered with respect to each other. By staggering the forward and reverse channel allocation timing interval, the return message is sent after only a portion of a full timing interval, rather than being delayed up to one complete timing interval.

    Abstract translation: 用于在无线通信中交错正向和反向信道时隙分配的系统和方法允许诸如基站处理器或订户接入单元的无线通信单元在小于全时隙间隔中发送返回消息。 正向和反向信道分配作为在周期性定时间隔发生的时隙的周期发生。 在时隙的开始发送携带消息有效载荷的无线帧。 由于正向和反向信道分配周期不需要并发或同相,所以这些周期可能相对于彼此交错。 通过交错前向和反向信道分配定时间隔,返回消息仅在完整定时间隔的一部分之后发送,而不是被延迟到一个完整的定时间隔。

    Variable rate coding for forward link
    125.
    发明授权
    Variable rate coding for forward link 有权
    前向链路的可变速率编码

    公开(公告)号:US07426241B2

    公开(公告)日:2008-09-16

    申请号:US10890485

    申请日:2004-07-13

    CPC classification number: H04L1/0041 H03M13/03 H04L1/0009 H04L1/0025

    Abstract: A technique for encoding a signal used in a digital communication system in which individual traffic channel data rates may be adapted to specific channel conditions. In particular, a forward error correction coding rate is adapted for individual channels while at the same time maintaining a fixed block size independent of the FEC coding rate. This allows the system data rate to adapt to the channel conditions experienced by a specific user. Thus, users experiencing good communication conditions with low multipath distortion may be allocated higher capacity, whereas users with significant multipath distortion may make use of lower rate (higher levels of coding) error codes to maintain high quality. Messages are sent from a transmitter to a receiver to inform the receiver of the coding rate implemented at any given point in time. These parameters may be adjusted independent of transmitted power level through the expedient of ensuring that size of a transmitted frame remains constant, while permitting the ability to change FEC coding rates and FEC block sizes.

    Abstract translation: 用于对在数字通信系统中使用的信号进行编码的技术,其中个体业务信道数据速率可以适应于特定信道条件。 特别地,前向纠错编码率适用于各个信道,同时保持与FEC编码率无关的固定块大小。 这允许系统数据速率适应特定用户经历的频道条件。 因此,具有低多径失真的良好通信条件的用户可以被分配较高的容量,而具有显着的多径失真的用户可以利用较低的速率(较高编码水平)的错误代码来维持高质量。 消息从发射机发送到接收机,以通知接收机在任何给定时间点实现的编码速率。 可以通过确保发送帧的大小保持恒定的方式来独立于发射功率电平来调整这些参数,同时允许改变FEC编码速率和FEC块大小的能力。

    Forward error correction scheme for high rate data exchange in a wireless system
    126.
    发明授权
    Forward error correction scheme for high rate data exchange in a wireless system 有权
    用于无线系统中高速数据交换的前向纠错方案

    公开(公告)号:US07366154B2

    公开(公告)日:2008-04-29

    申请号:US10634148

    申请日:2003-08-04

    CPC classification number: H04L1/0066 H04L1/0041

    Abstract: A transmitter/receiver system for high data transfer in a wireless communication system includes a physical layer processor that comprises an FEC coder, a demultiplexer and a plurality of modem processors. The FEC coder applies error correction codes to the high data rate signal. Thereafter, the demultiplexer distributes portions of the coded high data rate signal to the modem processors. Each modem processor processes its respective portion of the coded signal for transmission in an independent channel.

    Abstract translation: 在无线通信系统中用于高数据传输的发射机/接收机系统包括物理层处理器,其包括FEC编码器,解复用器和多个调制解调器处理器。 FEC编码器对高数据速率信号应用纠错码。 此后,解复用器将编码的高数据速率信号的一部分分配给调制解调处理器。 每个调制解调处理器处理编码信号的各自部分以在独立信道中传输。

    Method of detection of signals using an adaptive antenna in a peer-to-peer network
    127.
    发明授权
    Method of detection of signals using an adaptive antenna in a peer-to-peer network 有权
    在对等网络中使用自适应天线检测信号的方法

    公开(公告)号:US07224685B2

    公开(公告)日:2007-05-29

    申请号:US09952198

    申请日:2001-09-13

    CPC classification number: H04W16/28 H01Q3/2605 H01Q25/002 H04B7/0608

    Abstract: An adaptive antenna signal identification process to provide increased interference rejection in a wireless data network such as a wireless Local Area Network (LAN). The adaptive antenna is located at an access point and can be steered to various angle of arrival orientations with respect to received signals. Associated radio receiving equipment utilizes two distinct signal detection modes. In a first mode, the directional antenna array is set to have an omni-directional gain pattern. In this mode, certain identification parameters of an initial portion of a received signal are detected, such as a source identifier. If the received signal has not been previously detected, then the antenna array is scanned determine a direction setting that provides a best received signal metric. Once the best directional setting for the received signal, that setting is saved for future use in receiving the same signal. If the received signal has been previously detected, the system instead will steer the directional antenna to the last known best direction for reception for the particular detected signal. As further portions of the same signal are received, such as payload portions of a data frame, the directional antenna array can continue to scan potential new best angles. When the invention is deployed in a relay function, where messages received from a first node are to be forwarded to a second node, the recorded direction of its best reception is retrieved for the second node and used when the antenna array is used to transmit the signal to the second node. Storage of the best antenna angle for propagation to neighbor nodes can be handled by control functions in a manner that is analogous to other router lookup tables, such as being contained in a lookup table that stores IP addresses.

    Abstract translation: 一种在诸如无线局域网(LAN)的无线数据网络中提供增强的干扰抑制的自适应天线信号识别过程。 自适应天线位于接入点处,并且可以相对于接收到的信号转向不同的到达方位角。 相关无线电接收设备利用两种不同的信号检测模式。 在第一模式中,定向天线阵列被设置为具有全向增益模式。 在该模式中,检测接收信号的初始部分的某些识别参数,例如源标识符。 如果接收到的信号没有被先前检测到,则天线阵列被扫描确定提供最佳接收信号度量的方向设置。 一旦获得接收信号的最佳方向设置,该设置将被保存以备将来用于接收相同的信号。 如果先前已经检测到接收到的信号,则系统将引导定向天线到最后已知的最佳方向以便接收特定的检测信号。 由于接收到相同信号的更多部分,例如数据帧的有效载荷部分,定向天线阵列可以继续扫描潜在的新的最佳角度。 当本发明部署在中继功能中,其中从第一节点接收的消息将被转发到第二节点时,为第二节点检索其最佳接收的记录方向,并且当天线阵列用于发送时 信号到第二个节点。 用于传播到邻居节点的最佳天线角度的存储可以以类似于其他路由器查找表的方式由控制功能来处理,诸如被包含在存储IP地址的查找表中。

    Wireless area network using frequency translation and retransmission based on modified protocol messages for enhancing network coverage
    128.
    发明授权
    Wireless area network using frequency translation and retransmission based on modified protocol messages for enhancing network coverage 有权
    基于改进的协议消息的无线区域网络使用频率转换和重传,以增强网络覆盖

    公开(公告)号:US07200134B2

    公开(公告)日:2007-04-03

    申请号:US10529037

    申请日:2003-10-01

    CPC classification number: H04W88/04 H04B7/15528 H04W16/26 H04W84/12

    Abstract: In a wireless communications network such as a WLAN, a frequency translating repeater (200, 204) facilitates and enhances wireless communication between a first communication device (100) and one or more second client unit (104, 105) using frequency translation and retransmission based on modified protocol messages (410). A DS parameter message (310) may include a frequency channel intended for use between one or more of repeaters (200, 204) and client units (104, 105) but does not include the frequency channel between one or more of repeaters (200, 204) and the first communication device (100).

    Abstract translation: 在诸如WLAN的无线通信网络中,频率转换中继器(200,204)利用频率转换和基于重传的方式促进并增强了第一通信设备(100)和一个或多个第二客户端单元(104,105)之间的无线通信 修改的协议消息(410)。 DS参数消息(310)可以包括旨在在一个或多个中继器(200,204)和客户端单元(104,105)之间使用的频率信道,但不包括一个或多个中继器(200,104)之间的频率信道, 204)和第一通信设备(100)。

    Frequency translating repeater with low cost high performance local oscillator architecture
    129.
    发明授权
    Frequency translating repeater with low cost high performance local oscillator architecture 有权
    具有低成本高性能本地振荡器架构的频率转换中继器

    公开(公告)号:US07187904B2

    公开(公告)日:2007-03-06

    申请号:US11143927

    申请日:2005-06-03

    CPC classification number: H04B7/15528 H04B7/12

    Abstract: A frequency translating repeater (120) for use in a time division duplex (TDD) radio protocol communications system includes local oscillator (LO) circuits (210, 310, and 410) to facilitate repeating by providing isolation, reduced phase noise, reduced pulling, and the like. Tunable LOs (441, 442) can be directly coupled to down-converters (413, 414) and up-converters (426, 427) for increased isolation, reduced phase noise, less stringent frequency accuracy, and a reduced potential for pulling.

    Abstract translation: 用于时分双工(TDD)无线电协议通信系统的频率转换中继器(120)包括本地振荡器(LO)电路(210,310和410),以便通过提供隔离,降低的相位噪声,减小的拉取, 等等。 可调谐LO(441,442)可以直接耦合到下变频器(413,414)和上变频器(426,427),以增加隔离度,降低相位噪声,降低频率精度,降低拉电位。

    Electronic phase shifter with enhanced phase shift performance

    公开(公告)号:US07015773B2

    公开(公告)日:2006-03-21

    申请号:US09774534

    申请日:2001-01-31

    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%.

Patent Agency Ranking