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    Estimating available bandwidth and enhancing narrow link bandwidth estimations in telecommunications networks using existing user traffic
    1.
    发明授权
    Estimating available bandwidth and enhancing narrow link bandwidth estimations in telecommunications networks using existing user traffic 有权
    使用现有用户流量估计可用带宽和增强电信网络中的窄链路带宽估计

    公开(公告)号：US07965644B2

    公开(公告)日：2011-06-21

    申请号：US12781971

    申请日：2010-05-18

    申请人： Kirk K. Chang ,  John M. Sucec ,  Harshad Tanna ,  John Lee ,  Sunil Samtani

    发明人： Kirk K. Chang ,  John M. Sucec ,  Harshad Tanna ,  John Lee ,  Sunil Samtani

    IPC分类号： H04J3/14

    CPC分类号： H04L47/283 ,  H04L43/0858 ,  H04L43/0882 ,  H04L43/106 ,  H04L47/10 ,  H04L47/11 ,  H04L47/14 ,  H04L47/25 ,  H04L47/28

    摘要： Without using additional probing packets, estimates of the narrow link bandwidth and available bandwidth of a network path are computed based on existing traffic. The network can be of different types such as a wireless battlefield network context or a wired or wireless commercial network environment. “Fast packets”, i.e. those packets which do not experience any queuing delay in the network, are identified. Fast packets are identified to resolve end-to-end packet delay into its constituent components (deterministic, transmission and queuing delays), estimate path utilization and eliminate the uncertainty (false alarms) that causes the prior art method to lose its effectiveness. An estimation algorithm computes end-to-end transmission delay and end-to-end deterministic delay of fast packets traveling along a path in a network. Examples of deterministic delay include satellite propagation delays and clock effects. Then, based on the results of the fast packet identifying algorithm, two logic branches are followed. A first branch calculates utilization and a second branch calculates narrow link bandwidth. The narrow link bandwidth is determined from the packet pair dispersion. The available bandwidth is obtained from the narrow link bandwidth and the utilization. Estimation of available bandwidth for an end-to-end network path allows traffic sources to judiciously regulate the volume of application traffic injected into the network.

    摘要翻译： 在不使用附加探测分组的情况下，基于现有流量来计算网络路径的窄链路带宽和可用带宽的估计。 该网络可以是不同类型的，例如无线战场网络环境或有线或无线商业网络环境。 识别“快速分组”，即在网络中没有经历任何排队延迟的分组。 识别快速分组以将端到端分组延迟解析为其组成组件（确定性，传输和排队延迟），估计路径利用率并消除导致现有技术方法失效的不确定性（假警报）。 估计算法计算沿着网络中的路径行进的快速分组的端到端传输延迟和端到端确定性延迟。 确定性延迟的例子包括卫星传播延迟和时钟效应。 然后，基于快速分组识别算法的结果，跟随两个逻辑分支。 第一个分支计算利用率，第二个分支计算窄链路带宽。 窄链路带宽由分组对色散决定。 可用带宽从窄链路带宽和利用率获得。 估计端到端网络路径的可用带宽允许流量源明智地调节注入网络的应用流量。

    Geolocation estimation method for CDMA terminals based on pilot strength measurements
    3.
    发明授权
    Geolocation estimation method for CDMA terminals based on pilot strength measurements 有权
    基于导频强度测量的CDMA终端的地理位置估计方法

    公开(公告)号：US06263208B1

    公开(公告)日：2001-07-17

    申请号：US09321729

    申请日：1999-05-28

    申请人： Kirk K. Chang ,  Daniel R. Jeske ,  Kiran M. Rege

    发明人： Kirk K. Chang ,  Daniel R. Jeske ,  Kiran M. Rege

    IPC分类号： H04Q720

    CPC分类号： H04W64/00 ,  G01S5/0252

    摘要： The location of a mobile unit in the service area of a CDMA wireless communications system is determined by a location probability distribution procedure that is based entirely on analytical results derived from an integrated model of the wireless communications system, its RF environment and attribute measurement. The mobile unit measures and reports attribute values of pilot signal strength of all pilot signals visible to the mobile unit at its present location, whereupon a location probability distribution is computed based on a Bayesian probability algorithm including a set of stored model parameters.

    摘要翻译： 在CDMA无线通信系统的服务区域中的移动单元的位置由完全基于从无线通信系统的集成模型，其RF环境和属性测量得到的分析结果的位置概率分布过程确定。 移动单元测量并报告移动单元在其当前位置可见的所有导频信号的导频信号强度的属性值，由此基于包括一组存储的模型参数的贝叶斯概率算法来计算位置概率分布。

    Estimating available bandwidth and enhancing narrow link bandwidth estimations in telecommunications networks using existing user traffic
    4.
    发明授权
    Estimating available bandwidth and enhancing narrow link bandwidth estimations in telecommunications networks using existing user traffic 有权
    使用现有用户流量估计可用带宽和增强电信网络中的窄链路带宽估计

    公开(公告)号：US07768933B2

    公开(公告)日：2010-08-03

    申请号：US11251224

    申请日：2005-10-14

    申请人： Kirk K. Chang ,  John M. Sucec ,  Harshad Tanna ,  John Lee ,  Sunil Samtani

    发明人： Kirk K. Chang ,  John M. Sucec ,  Harshad Tanna ,  John Lee ,  Sunil Samtani

    IPC分类号： H04J1/16

    CPC分类号： H04L47/283 ,  H04L43/0858 ,  H04L43/0882 ,  H04L43/106 ,  H04L47/10 ,  H04L47/11 ,  H04L47/14 ,  H04L47/25 ,  H04L47/28

    摘要： Without using additional probing packets, estimates of the narrow link bandwidth and available bandwidth of a network path are computed based on existing traffic. The network can be of different types such as a wireless battlefield network context or a wired or wireless commercial network environment. “Fast packets”, i.e. those packets which do not experience any queuing delay in the network, are identified. Fast packets are identified to resolve end-to-end packet delay into its constituent components (deterministic, transmission and queuing delays), estimate path utilization and eliminate the uncertainty (false alarms) that causes the prior art method to lose its effectiveness. An estimation algorithm computes end-to-end transmission delay and end-to-end deterministic delay of fast packets traveling along a path in a network. Examples of deterministic delay include satellite propagation delays and clock effects. Then, based on the results of the fast packet identifying algorithm, two logic branches are followed. A first branch calculates utilization and a second branch calculates narrow link bandwidth. The narrow link bandwidth is determined from the packet pair dispersion. The available bandwidth is obtained from the narrow link bandwidth and the utilization. Estimation of available bandwidth for an end-to-end network path allows traffic sources to judiciously regulate the volume of application traffic injected into the network.

    摘要翻译： 在不使用附加探测分组的情况下，基于现有流量来计算网络路径的窄链路带宽和可用带宽的估计。 该网络可以是不同类型的，例如无线战场网络环境或有线或无线商业网络环境。 识别“快速分组”，即在网络中没有经历任何排队延迟的分组。 识别快速分组以将端到端分组延迟解析为其组成组件（确定性，传输和排队延迟），估计路径利用率并消除导致现有技术方法失效的不确定性（假警报）。 估计算法计算沿着网络中的路径行进的快速分组的端到端传输延迟和端到端确定性延迟。 确定性延迟的例子包括卫星传播延迟和时钟效应。 然后，基于快速分组识别算法的结果，跟随两个逻辑分支。 第一个分支计算利用率，第二个分支计算窄链路带宽。 窄链路带宽由分组对色散决定。 可用带宽从窄链路带宽和利用率获得。 估计端到端网络路径的可用带宽允许流量源明智地调节注入网络的应用流量。

    Methods and systems for determining the location of mobiles in a UMTS telecommunications system
    5.
    发明授权
    Methods and systems for determining the location of mobiles in a UMTS telecommunications system 有权
    用于确定UMTS电信系统中的移动台的位置的方法和系统

    公开(公告)号：US06701153B1

    公开(公告)日：2004-03-02

    申请号：US09628011

    申请日：2000-07-28

    申请人： Kirk K. Chang ,  On-Ching Yue

    发明人： Kirk K. Chang ,  On-Ching Yue

    IPC分类号： H04Q720

    CPC分类号： H04W64/00

    摘要： A Universal Mobile Telecommunications System (“UMTS”) is modified to provide location-determining services similar to Wireless-Assisted-GPS (“WAG”) services to mobiles without requiring the deployment of a GPS receiver inside the UMTS network. The resulting network is known as a UMTS Network Assisted GPS (“UNAG”) network. A UNAG network is created by deploying a UNAG server inside a UMTS network. The UNAG server provides WAG-like services to mobiles. Only one UNAG server is needed in an entire system, allowing the cost of the UNAG server to be amortized over a number of Mobile Switching Centers (“MSCs”) in the UMTS network. The UNAG server provides excellent location-prediction accuracy and reduces the amount of time required to determine the location of a mobile in a UMTS network.

    摘要翻译： 修改通用移动电信系统（“UMTS”）以向移动台提供类似于无线辅助GPS（“WAG”）服务的位置确定服务，而不需要在UMTS网络内部署GPS接收机。 所得到的网络被称为UMTS网络辅助GPS（“UNAG”）网络。 通过在UMTS网络内部署UNAG服务器来创建UNAG网络。 UNAG服务器为手机提供类似WAG的服务。 在整个系统中只需要一个UNAG服务器，允许UNAG服务器的成本通过UMTS网络中的多个移动交换中心（“MSC”）进行分摊。 UNAG服务器提供优异的位置预测精度，并减少确定UMTS网络中移动站位置所需的时间量。

    Method and system for interleaving of full rate channels suitable for half duplex operation and statistical multiplexing
    8.
    发明授权
    Method and system for interleaving of full rate channels suitable for half duplex operation and statistical multiplexing 有权
    适用于半双工操作和统计复用的全速率通道交织方法和系统

    公开(公告)号：US06813252B2

    公开(公告)日：2004-11-02

    申请号：US09738344

    申请日：2000-12-15

    申请人： Kirk K. Chang ,  Enrique Hernandez-Valencia ,  Wei Luo ,  Sanjiv Nanda

    发明人： Kirk K. Chang ,  Enrique Hernandez-Valencia ,  Wei Luo ,  Sanjiv Nanda

    IPC分类号： H04L514

    CPC分类号： H04B7/2656

    摘要： A time division multiplexed communications method and system in which time is divided into a number of frames and each frame is divided into N data bursts. The method and system further has a first multiplexer by which a half rate channel is formed as a series of bursts that occur periodically every N bursts once per frame, a second multiplexer in which a full rate channel is formed as two half rate channels on consecutive timeslots, and a transmitter transmitting the full rate channel from a first wireless station to a second wireless station. The full rate channel provided by two half rate channels on consecutive timeslots yields a significantly larger resource pool available for assignment of communication traffic. For full rate channels, the interleaving 0246/1357 method that is used by the system is just as good as the known 0123/4567 method when ideal frequency hopping is used, and the 0246/1357 method performs better when non-ideal frequency hopping or no frequency hopping is used.

    摘要翻译： 一种时分复用通信方法和系统，其中时间被分成多个帧，并且每个帧被划分成N个数据脉冲串。 所述方法和系统还具有第一多路复用器，通过该第一多路复用器将半速率信道形成为每帧每N个突发周期性出现的一系列脉冲串;第二多路复用器，其中全速率信道形成为连续的两个半速率信道 时隙，以及从第一无线站向第二无线站发送全速率信道的发射机。 在连续时隙上由两个半速率信道提供的全速率信道产生可用于分配通信业务的显着更大的资源池。 对于全速率信道，当使用理想跳频时，系统使用的交织0246/1357方法与已知的0123/4567方法一样好，当非理想跳频或0246/1357方法时， 不使用跳频。

    Call admission control and preemption control over a secure tactical network
    10.
    发明授权
    Call admission control and preemption control over a secure tactical network 有权
    通过安全的战术网络进行呼叫准入控制和抢占控制

    公开(公告)号：US09438516B2

    公开(公告)日：2016-09-06

    申请号：US13104489

    申请日：2011-05-10

    申请人： Kirk K. Chang ,  Gi Tae Kim ,  John Unger ,  John Sucec ,  Sunil Samtani

    发明人： Kirk K. Chang ,  Gi Tae Kim ,  John Unger ,  John Sucec ,  Sunil Samtani

    IPC分类号： H04J3/14 ,  H04L12/801 ,  H04L12/54 ,  H04L12/851 ,  H04L12/927 ,  H04L12/911

    CPC分类号： H04L47/10 ,  H04L47/11 ,  H04L47/2408 ,  H04L47/2433 ,  H04L47/245 ,  H04L47/70 ,  H04L47/805 ,  H04L47/822

    摘要： In a secure network where the network characteristics are not known, a call admission control algorithm and a preemption control algorithm based on a destination node informing the source node of the observed carried traffic are used to regulate the amount of traffic that needs to be preempted by the source. The amount of traffic that needs to be preempted is based on the carried traffic measured at the destination node. The traffic to be preempted is based on the priority of the traffic, where the lowest priority traffic is the first to be preempted until the amount of traffic preempted is sufficient to allow the remaining traffic to pass through the network without congestion.

    摘要翻译： 在网络特性不知道的安全网络中，使用基于通知源节点的所观察到的携带业务的目的地节点的呼叫接纳控制算法和抢占控制算法来规范需要被抢占的业务量 来源。 需要抢占的流量大小取决于在目的地节点处测量的携带流量。 要抢占的流量是基于流量的优先级，其中优先级最低的流量是首先被抢占的流量，直到被抢占的流量足以允许剩余流量通过网络而不拥塞。