公开(公告)号：US06331986B1

公开(公告)日：2001-12-18

申请号：US09065506

申请日：1998-04-24

申请人： Debasis Mitra ,  John A. Morrison ,  Kajamalai Gopalaswamy Ramakrishnan

发明人： Debasis Mitra ,  John A. Morrison ,  Kajamalai Gopalaswamy Ramakrishnan

IPC分类号： H04J316

CPC分类号： H04Q3/0091 ,  H04L2012/562 ,  H04L2012/5621 ,  H04Q3/62 ,  H04Q11/0478 ,  H04Q2213/13056 ,  H04Q2213/13141 ,  H04Q2213/13148 ,  H04Q2213/13164 ,  H04Q2213/13332 ,  H04Q2213/13349 ,  H04Q2213/13383 ,  H04Q2213/13384 ,  H04Q2213/13399

摘要： We describe a method for solving the joint problem of optimal routing and optimal bandwidth allocation in a network that supports plural subnetworks and plural communication services. Our method involves, for each source-destination pair communicating via a given subnetwork and a given class of service, determining a traffic rate to be offered to each of a set of permissible routes between that source and that destination, in the given subnetwork and service class. Our method further involves allocating a respective bandwidth to each link of each subnetwork. Significantly, the determinations of traffic rate to be offered, and the allocations of bandwidth to respective links of subnetworks, are performed in a mutually responsive manner.

摘要翻译： 我们描述了一种在支持多个子网和多个通信业务的网络中解决最优路由和最优带宽分配联合问题的方法。 我们的方法涉及对于通过给定的子网络和给定的服务类别进行通信的每个源 - 目的地对，在给定子网络和服务中确定要提供给该源和该目的地之间的一组允许路由中的每一个的业务速率 类。 我们的方法还包括为每个子网的每个链路分配相应的带宽。 重要的是，以相互响应的方式执行要提供的业务速率的确定以及对各个子网络的各个链路的带宽分配。

公开(公告)号：US5956649A

公开(公告)日：1999-09-21

申请号：US182906

申请日：1998-10-29

申请人： Debasis Mitra ,  John A. Morrison

发明人： Debasis Mitra ,  John A. Morrison

IPC分类号： H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/00 ,  H04W52/24 ,  H04W52/34 ,  H04B17/00

CPC分类号： H04W52/343 ,  H04W52/24 ,  H04W52/265 ,  H04W52/346

摘要： A method and apparatus use a set of parameters characterizing an interference signal at a base unit for determining power levels for signals transmitted from a communications device to the base unit. The set of parameters comprises second or higher order statistics characterizing the interference signal, and the parameters are used to determine a desired power level for signals received at the base unit. The desired power level is communicated to a communications device via a pilot signal transmitted by the base unit at a predetermined level. The predetermined level and the power of the received pilot signal are used to compute a path gain between the base unit and communications device. The path gain and desired power level are then used to determine the power level of signals transmitted from the communications device to the base unit.

摘要翻译： 方法和装置使用表征基站单元处的干扰信号的一组参数来确定从通信设备发送到基站单元的信号的功率电平。 这组参数包括表征干扰信号的第二或更高阶统计量，并且参数用于确定在基本单元处接收的信号的期望功率电平。 所需的功率电平经由基本单元以预定电平发送的导频信号传送到通信设备。 接收到的导频信号的预定电平和功率用于计算基本单元和通信设备之间的路径增益。 路径增益和期望功率电平然后用于确定从通信设备发送到基站的信号的功率电平。

公开(公告)号：US5734736A

公开(公告)日：1998-03-31

申请号：US261729

申请日：1994-06-17

申请人： Leon G. Palmer ,  Timothy J. Murphy ,  John A. Morrison ,  Teresa M. Morrison

发明人： Leon G. Palmer ,  Timothy J. Murphy ,  John A. Morrison ,  Teresa M. Morrison

IPC分类号： B64G1/64 ,  G06T1/00 ,  G06T7/60 ,  G06K9/00 ,  G01N21/86 ,  G01S13/00 ,  G06K9/48

CPC分类号： B64G1/646

摘要： Disclosed is an autonomous rendezvous and docking system and method therefor used for the rendezvous and docking of spacecraft. The autonomous rendezvous and docking system allows spacecraft rendezvous, proximity maneuvering, and docking between a chase spacecraft and a target spacecraft by determining the relative position between the two spacecrafts. The relative position is determined based on the location of target reflections from a reflective target positioned on the target spacecraft. The target reflections are identified by intensity, shape, size and location from various other spurious reflections. This ultimately allows the autonomous rendezvous and docking system to determine the x, y, z, roll, pitch and yaw positions of the target spacecraft in relation to the chase spacecraft.

摘要翻译： 公开了一种用于航天器会合和对接的自主会合和对接系统及其方法。 自主会合和对接系统通过确定两个航天器之间的相对位置，允许航天器会合，近距离操纵和追逐航天器与目标航天器之间的对接。 基于来自位于目标航天器上的反射目标的目标反射的位置来确定相对位置。 目标反射由来自各种其他虚假反射的强度，形状，大小和位置来识别。 这最终允许自主会合和对接系统确定目标航天器相对于追逐航天器的x，y，z，滚动，俯仰和偏航位置。

公开(公告)号：US5732328A

公开(公告)日：1998-03-24

申请号：US812627

申请日：1997-03-07

申请人： Debasis Mitra ,  John A. Morrison

发明人： Debasis Mitra ,  John A. Morrison

IPC分类号： H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/00 ,  H04W52/24 ,  H04W52/34 ,  H04B1/00 ,  H04B7/00

CPC分类号： H04B7/2628 ,  H04W52/04 ,  H04W52/24 ,  H04W52/343 ,  H04W52/346

摘要： Transmission power of a wireless terminal for transmitting a signal representing information of a particular information class to a base station capable of receiving signals for a plurality of information classes is determined based on a probability measure indicating received signal outage durations that would likely occur over a time interval. Moreover, the transmission power is determined to achieve probable signal outage durations according to the measure that are tolerable for the particular information class to be transmitted. The probability measure is further based on an enhanced characterization of a variation and mean of the detected signal interference magnitude over a time interval. Respective differences in the tolerable signal outage intervals for different information classes, such as voice, audio or video or data, and the corresponding enhanced interference characterization enable transmission of signals representing the information classes at desirably respective low power levels while still providing an acceptable quality of service relative to conventional power control techniques. Such low transmission powers tend to contribute less interference to the communication system and enable greater communication capacity.

摘要翻译： 基于表示在一段时间内可能发生的接收信号中断持续时间的概率测量，确定用于将表示特定信息类别的信号的信号发送到能够接收多个信息类别的信号的基站的无线终端的发送功率 间隔。 此外，根据对要发送的特定信息类可容忍的测量，确定发送功率以实现可能的信号中断持续时间。 概率测量还基于对时间间隔内检测到的信号干扰幅度的变化和平均值的增强表征。 用于不同信息类别（例如语音，音频或视频或数据）的可容忍的信号中断间隔的相应差异以及相应的增强的干扰特性使得能够以希望的相应的低功率电平传输表示信息类别的信号，同时仍然提供可接受的质量 服务相对于传统的功率控制技术。 这种低传输功率倾向于对通信系统贡献较少的干扰并且能够实现更大的通信能力。