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    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system
    75.
    发明授权
    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system 失效
    用于减少在CDMA蜂窝通信系统中同时访问基站的移动站之间的消息冲突的装置和方法

    公开(公告)号：US07734260B2

    公开(公告)日：2010-06-08

    申请号：US11622383

    申请日：2007-01-11

    申请人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    发明人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    IPC分类号： H04B1/04

    CPC分类号： H04W74/0841 ,  H04B1/707 ,  H04B1/7103 ,  H04B7/2628 ,  H04B2201/709709 ,  H04J13/0022 ,  H04J13/10 ,  H04J13/16 ,  H04L1/188 ,  H04L1/1887 ,  H04W52/48 ,  H04W52/50 ,  H04W74/002 ,  H04W74/08 ,  H04W74/0833 ,  H04W74/0866

    摘要： Collisions between messages simultaneously transmitted by multiple spread-spectrum transmitters are reduced by distributing the transmissions over the available resources of the receiver. Each mobile station in a CDMA system uses one or more randomization methods to distribute its transmissions. In the first randomization, the mobile station time-delays its transmissions by a number of chips of the PN code with which it spreads the transmitted signal. In a second randomization, the mobile station randomly selects the PN code. In a third randomization, the mobile station inserts a random delay between successive message transmissions or probes if it does not receive an acknowledgement after a predetermined timeout period. A predetermined number of such transmissions is called a probe sequence. In a fourth randomization, the mobile station inserts a relatively long random delay between successive probe sequences if it does not receive an acknowledgement of any probe in the sequence.

    摘要翻译： 通过在接收机的可用资源上分发传输来减少由多个扩频发射机同时发送的消息之间的冲突。 CDMA系统中的每个移动站使用一种或多种随机化方法来分发其传输。 在第一次随机化中，移动台通过PN码的多个码片对其发送进行时间延迟，并通过该芯片扩展发送的信号。 在第二随机化中，移动台随机选择PN码。 在第三次随机化中，如果移动台在预定的超时时段之后没有接收到确认，则在连续的消息传输或探测之间插入随机延迟。 预定数量的这种传输被称为探测序列。 在第四随机化中，如果移动台在序列中没有接收到任何探测器的确认，则在连续探测序列之间插入相对长的随机延迟。

    Timing Measurement For Checking Probes
    76.
    发明申请
    Timing Measurement For Checking Probes 有权
    检测探头的定时测量

    公开(公告)号：US20090122934A1

    公开(公告)日：2009-05-14

    申请号：US12087727

    申请日：2007-01-16

    申请人： Andrea Ferrari ,  Roberto Padovani

    发明人： Andrea Ferrari ,  Roberto Padovani

    IPC分类号： H04L7/00 ,  G01B5/00

    CPC分类号： H04L27/00

    摘要： A system and a method for the transmission of signals representative of an event include a first low frequency clock (101) and a low frequency counter (102) for generating a first delay (TL), and a second high frequency clock (106) and a high frequency counter (104) for generating a second delay (TH). The system further includes a transmitter (105) for transmitting the representative signals after a delay from the event made up by the sum of the first and the second delay. The second delay can be generated also by an analogic device including for example a capacitor (99), and devices (97) for charging the capacitor up to the reaching of a preset voltage at its ends. A wireless transmission system according to the invention is utilized in a checking system with a contact detecting probe (1), for transmitting a signal representative of contact with the piece to be checked.

    摘要翻译： 用于传送表示事件的信号的系统和方法包括用于产生第一延迟（TL）的第一低频时钟（101）和低频计数器（102）和第二高频时钟（106）和 用于产生第二延迟（TH）的高频计数器（104）。 该系统还包括发射机（105），用于在从由第一和第二延迟的和组成的事件的延迟之后发送代表信号。 第二延迟也可以由包括例如电容器（99）的模拟装置以及用于对电容器充电直到在其端部达到预设电压的装置（97）产生。 根据本发明的无线传输系统用于具有接触检测探针（1）的检查系统中，用于传送代表与被检查件接触的信号。