公开(公告)号：US5659545A

公开(公告)日：1997-08-19

申请号：US339998

申请日：1994-11-15

申请人： Kenneth L. Sowles ,  Ralph C. Gregg ,  Keith A. Olds

发明人： Kenneth L. Sowles ,  Ralph C. Gregg ,  Keith A. Olds

IPC分类号： H04B7/185 ,  H04J4/00

CPC分类号： H04B7/18558

摘要： To obtain service from a satellite communication system, a mobile subscriber unit must acquire a TDMA communication channel. Because the satellites move with respect to the surface of the earth, propagation delays and Doppler shift affect the timing and frequency of received signals. A mobile subscriber unit synchronizes to the frequency and timing windows of a satellite communication station by receiving frequency and timing corrections during channel acquisition. The satellite initially estimates correction factors during initial acquisition requests and further estimates correction factors from synchronization bursts from the subscriber unit.

摘要翻译： 为了从卫星通信系统获得服务，移动用户单元必须获取TDMA通信信道。 由于卫星相对于地球表面移动，传播延迟和多普勒频移影响接收信号的定时和频率。 移动用户单元通过在信道获取期间接收频率和定时校正来与卫星通信站的频率和定时窗口同步。 卫星初始估计初始获取请求期间的校正因子，并进一步估计来自用户单元的同步脉冲串的校正因子。

公开(公告)号：US5548800A

公开(公告)日：1996-08-20

申请号：US254012

申请日：1994-06-03

申请人： Keith A. Olds ,  Christopher N. Kurby

发明人： Keith A. Olds ,  Christopher N. Kurby

IPC分类号： G01S19/11 ,  H04B7/185

CPC分类号： H04B7/18513

摘要： A constellation of satellites distributed around the earth serves as a communication network that supports global communication of subscriber units. Subscriber units may potentially transmit from any location on earth. Some locations such as radio astronomy sites may be interfered with by nearby transmissions from subscriber units. Subscriber units located within a potentially interfering proximity to radio astronomy sites are prohibited from transmitting potentially interfering signals by reception of a non-interfering beacon at radio astronomy sites. The beacon repeatedly transmits a synchronous control signal with a subscriber unit's servicing satellite's control signal. The beacon's control signal is compatible with a subscriber unit's communication receiver. Control signal information contained in a beacon control signal inhibits the subscriber unit from transmitting.

摘要翻译： 分布在地球上的卫星星座作为支持用户单元全球通信的通信网络。 用户单元可能可能从地球上的任何位置传输。 诸如射电天文遗址的某些位置可能受到来自用户单元的附近传输的干扰。 位于与射电天文台站潜在干扰接近的订户单元被禁止通过在射电天文站点接收非干扰信标来发送潜在的干扰信号。 信标反复发送具有用户单元的维修卫星的控制信号的同步控制信号。 信标的控制信号与用户单元的通信接收机兼容。 包含在信标控制信号中的控制信号信号禁止用户单元的发送。

公开(公告)号：US5500648A

公开(公告)日：1996-03-19

申请号：US105730

申请日：1993-08-11

申请人： Kristine P. Maine ,  Keith A. Olds ,  Gerald J. Davieau

发明人： Kristine P. Maine ,  Keith A. Olds ,  Gerald J. Davieau

IPC分类号： G01S5/00 ,  G01S5/06 ,  G01S5/12 ,  G01S5/02

CPC分类号： G01S5/12 ,  G01S5/0027 ,  G01S5/06

摘要： A radio telecommunication system includes a number of satellites in low earth orbits. Any number of subscriber units communicates with the satellites. A single subscriber unit communicates with a single satellite using electromagnetic signals so that a measurement processor can obtain Doppler component, propagation duration, and real time measurements of the signals. A location processor converts these measurements into a geographic location with respect to the earth. A service processor determines which qualifications to apply to communication services offered by the system. These qualifications are based on the subscriber unit's location. A call processor carries out the qualifications when requests to setup calls involving the subscriber unit are received by the system and during calls involving the subscriber unit.

摘要翻译： 无线电通信系统包括在低地球轨道上的若干卫星。 任何数量的用户单元与卫星通信。 单个用户单元使用电磁信号与单个卫星进行通信，使得测量处理器可以获得信号的多普勒分量，传播持续时间和实时测量。 位置处理器将这些测量转换为相对于地球的地理位置。 服务处理器确定应用于系统提供的通信服务的哪些资格。 这些资格基于用户单位的位置。 当涉及用户单元的呼叫的请求被系统接收并且在涉及用户单元的呼叫期间，呼叫处理器执行资格。

公开(公告)号：US5488640A

公开(公告)日：1996-01-30

申请号：US298633

申请日：1994-08-31

申请人： James P. Redden ,  David Terris ,  Keith A. Olds

发明人： James P. Redden ,  David Terris ,  Keith A. Olds

IPC分类号： H04B7/185 ,  H04L7/00

CPC分类号： H04B7/18558

摘要： Ongoing communications over radio links between communication stations and subscriber units may be unexpectedly broken. Where the communication stations include low-Earth orbit satellites, communication links are difficult to re-establish because of the timing differential and Doppler-frequency shift associated with the satellite's movement. The communication link is re-established by initially changing the modulation technique in an attempt to re-synchronize the communication station and the subscriber unit. If this fails, the subscriber unit performs an acquisition attempt on another antenna beam of the communication station. If this is not successful, the subscriber may perform an acquisition attempt on antenna beams of another communication station.

摘要翻译： 在通信站和用户单元之间的无线电链路上的正在进行的通信可能被意外地破坏。 在通信站包括低地球轨道卫星的地方，由于与卫星运动相关联的定时差分和多普勒频移，难以重新建立通信链路。 通过初始改变调制技术来重新建立通信链路，以试图重新同步通信站和用户单元。 如果这失败，则用户单元对通信站的另一个天线波束执行采集尝试。 如果这不成功，则用户可以对另一通信站的天线波束执行采集尝试。

公开(公告)号：US4644297A

公开(公告)日：1987-02-17

申请号：US835682

申请日：1986-03-03

申请人： Keith A. Olds

发明人： Keith A. Olds

IPC分类号： H03H9/02 ,  H03L7/02 ,  H03H9/145 ,  H03L7/08

CPC分类号： H03H9/02834 ,  H03L7/02

摘要： A frequency locked loop having a surface acoustic wave time delay device disposed on the same substrate, or a substrate on the same material, as a surface acoustic wave device being compensated. As temperature causes changes in the surface acoustic wave device, changes in the time delay of the surface acoustic wave time delay device will also occur. These changes in the time delay are used by the frequency locked loop to adjust the frequency of an incoming signal of the frequency locked loop and to provide an adjusted input signal frequency to the surface acoustic wave device. This adjusted input compensates for the change in the output caused by the temperature change.

摘要翻译： 一种频率锁定环，其具有布置在同一基板上的表面声波延迟装置或相同材料上的基板作为补偿的声表面波装置。 随着温度的升高导致弹性表面波装置的变化，表面声波延时装置的延时也会发生变化。 时间延迟中的这些变化被频率锁定环使用以调整频率锁定环路的输入信号的频率，并向声表面波装置提供经调整的输入信号频率。 该调整后的输入补偿了温度变化引起的输出变化。

公开(公告)号：US4571514A

公开(公告)日：1986-02-18

申请号：US444919

申请日：1982-11-26

申请人： Robert N. Nelson ,  Keith A. Olds ,  Scott C. White

发明人： Robert N. Nelson ,  Keith A. Olds ,  Scott C. White

IPC分类号： G01R29/027 ,  H03K5/22 ,  H03K5/26

CPC分类号： G01R29/0273

摘要： An amplitude adjusted pulse width discriminator and method therefor wherein a received video pulse is sampled and held when it crosses a threshold. An indication of a valid pulse being present is given if the level of the signal at the input is within a preset range around the level of the held sample pulse at the end of a preset pulse width discrimination interval.

摘要翻译： 一种幅度调整的脉冲宽度鉴别器及其方法，其中当接收的视频脉冲越过阈值时被采样和保持。 如果输入信号的电平在预设脉冲宽度辨别区间结束时在保持的采样脉冲的电平附近的预设范围内，则给出存在有效脉冲的指示。

公开(公告)号：US07855997B2

公开(公告)日：2010-12-21

申请号：US11832202

申请日：2007-08-01

申请人： Stanley L. Adams ,  Keith A. Olds ,  Joseph B. Cain ,  Michael R. James

发明人： Stanley L. Adams ,  Keith A. Olds ,  Joseph B. Cain ,  Michael R. James

IPC分类号： H04W24/02 ,  H04W28/08 ,  H04W28/12 ,  H04W72/12 ,  H04B7/212 ,  H04B15/00 ,  H04Q11/04

CPC分类号： H04W72/082 ,  H04W84/18

摘要： Method and apparatus for scheduling time division multiple access (TDMA) communications among a plurality of peer nodes arranged to form a wireless ad hoc mobile network. The peer nodes communicate with each other using directional antennas and a TDMA process. The method includes a scheduling process for scheduling at least one transmit time slot during which a first one of the plurality of peer nodes transmits wireless data to a second one of the plurality of peer nodes.

摘要翻译： 用于调度布置成形成无线自组织移动网络的多个对等节点之间的时分多址（TDMA）通信的方法和装置。 对等节点使用定向天线和TDMA过程彼此通信。 该方法包括用于调度至少一个传输时隙的调度过程，在该传输时隙期间，多个对等节点中的第一个发送时隙将无线数据发送到多个对等节点中的第二个对等节点。

公开(公告)号：US06819286B2

公开(公告)日：2004-11-16

申请号：US10375993

申请日：2003-02-28

申请人： Peter J. Armbruster ,  Keith A. Olds ,  David T. Gustafson

发明人： Peter J. Armbruster ,  Keith A. Olds ,  David T. Gustafson

IPC分类号： G01S124

CPC分类号： G01S5/14 ,  G01S5/0226 ,  G01S5/0289

摘要： A method for location determination using Bluetooth techniques is applicable within buildings, underground or within other structures. A mobile unit (10) seeks the location of a cell from location master (20). Location master (20) and a number of location subsidiaries (21-24) determine ranging information with regard to the mobile unit (10) using Bluetooth techniques. The location master (20) then determines the mobile unit location using least squares estimation or other triangulation methods (50). In an alternate embodiment, ranging information is fine tuned for noise and error measurements between the location master and the location subsidiaries (51, 53) are used.

公开(公告)号：US5444450A

公开(公告)日：1995-08-22

申请号：US105219

申请日：1993-08-11

申请人： Keith A. Olds ,  Kristine P. Maine

发明人： Keith A. Olds ,  Kristine P. Maine

IPC分类号： G01S5/12 ,  H04W4/24 ,  G01S5/02 ,  H04B1/00 ,  H04M11/00

CPC分类号： H04W4/24 ,  G01S5/12 ,  H04M15/8033 ,  H04M2215/32 ,  H04M2215/7435

摘要： A radio telecommunications system includes a number of satellites in low earth orbits. Subscriber units communicate with the satellites. A single subscriber unit communicates with a single satellite using electromagnetic signals so that a measurement processor can obtain Doppler component, propagation duration, and real time measurements of the signals. A location processor converts these measurements into a geographic location with respect to the earth through an iterative process. The location processor determines the accuracy required for each location determination, and performs only the number of iterations needed to meet the accuracy requirements. A service processor determines which qualifications to apply to communication services offered by the system. These qualifications are based on the subscriber unit's location.

摘要翻译： 无线电通信系统包括一些低地球轨道的卫星。 用户单元与卫星通信。 单个用户单元使用电磁信号与单个卫星进行通信，使得测量处理器可以获得信号的多普勒分量，传播持续时间和实时测量。 位置处理器通过迭代过程将这些测量值转换为相对于地球的地理位置。 位置处理器确定每个位置确定所需的精度，并且仅执行满足精度要求所需的迭代次数。 服务处理器确定应用于系统提供的通信服务的哪些资格。 这些资格基于用户单位的位置。

公开(公告)号：US07149515B2

公开(公告)日：2006-12-12

申请号：US10688629

申请日：2003-10-17

申请人： Thomas G. Hallin ,  Keith A. Olds ,  William N. Shores

发明人： Thomas G. Hallin ,  Keith A. Olds ,  William N. Shores

IPC分类号： H04Q7/20 ,  H04B7/00

CPC分类号： H04L65/1046 ,  H04L65/1069 ,  H04M1/2535 ,  H04W88/181

摘要： Transcoding needs and selection are performed by a central call control function (17, 35). Each transcoder (18, 23, 34, 36) registers with the appropriate call control (17, 35). The call control then determines whether a vocoder is required at all. If vocoding is required, call control (17, 35) selects the appropriate transcoder (18, 34) and inserts the appropriate transcoder into the bearer traffic stream (16).

摘要翻译： 转码需求和选择由中央呼叫控制功能（17,35）执行。 每个代码转换器（18,23,34,36）向适当的呼叫控制（17,35）注册。 呼叫控制然后确定是否需要声码器。 如果需要声码，则呼叫控制（17,35）选择适当的代码转换器（18,34），并将适当的代码转换器插入承载业务流（16）。