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    Efficiently providing multiple grades of service with protection against overloads in shared resources
    13.
    发明授权
    Efficiently providing multiple grades of service with protection against overloads in shared resources 失效
    有效提供多级服务，防止共享资源过载

    公开(公告)号：US5719854A

    公开(公告)日：1998-02-17

    申请号：US628305

    申请日：1996-04-05

    申请人： Gagan Lal Choudhury ,  Kin K. Leung ,  Ward Whitt

    发明人： Gagan Lal Choudhury ,  Kin K. Leung ,  Ward Whitt

    IPC分类号： H04M3/36 ,  G06F9/46 ,  G06F9/50 ,  H04L12/56 ,  H04M3/00 ,  H04Q3/00 ,  H04Q3/545 ,  H04Q3/66 ,  H04Q11/04 ,  H04J3/12

    CPC分类号： H04Q11/0478 ,  G06F9/5027 ,  G06F9/505 ,  H04L12/5602 ,  H04Q3/66 ,  G06F2209/504 ,  G06F2209/508 ,  H04L2012/5632 ,  H04L2012/5679 ,  H04Q2213/13095 ,  H04Q2213/13145 ,  H04Q2213/13164 ,  H04Q2213/13166 ,  H04Q2213/13332 ,  H04Q2213/13344 ,  Y02B60/142

    摘要： Techniques for (a) controlling admission of customers to a shared resource, (b) adjusting the capacity of a resource in light of new customer demand, and (c) diverting usage from a failed resource to alternative resources, each use a "blocking probability computer" (BPC) to solve a resource-sharing model that has a product-form steady-state distribution. The techniques allow each customer to obtain an appropriate grade of service and protection against overloads from other customers. Each customer is a source of a series of requests, and is assigned "upper-limit" (UL) and "guaranteed-minimum" (GM) "bounds" on its requests. The upper limit bound puts an upper limit on the number of requests from that customer that can be in service at any time. The guaranteed-minimum bound guarantees that there will always be available resource units in the resources to serve a specified number of requests from that customer. The desired blocking probabilities are directly expressed in terms of normalization constants appearing in the product-form steady-state distribution. The BPC computes the normalization constants by first constructing the generating function (or z-transform) of the normalizing constant and then numerically inverting the generating function.

    摘要翻译： 技术用于（a）控制客户对共享资源的接纳，（b）根据新的客户需求来调整资源的能力，以及（c）将故障资源的使用转移到替代资源，每种都使用“阻塞概率 计算机“（BPC）来解决具有产品形态稳态分布的资源共享模型。 这些技术允许每个客户获得适当的服务等级并防止其他客户的超载。 每个客户是一系列请求的来源，并在其请求上被分配“上限”（UL）和“保证最小”（GM）“边界。 上限限制可以在任何时候可以使用的客户的请求数量上限。 保证最小限度保证在资源中始终有可用的资源单元来服务于该客户的指定数量的请求。 期望的阻塞概率直接表示为产品形态稳态分布中出现的归一化常数。 BPC通过首先构建归一化常数的生成函数（或z变换）然后数字反转生成函数来计算归一化常数。

    WLAN having load balancing based on access point loading
    15.
    发明授权
    WLAN having load balancing based on access point loading 有权
    WLAN具有基于接入点负载的负载均衡

    公开(公告)号：US08249039B2

    公开(公告)日：2012-08-21

    申请号：US13026622

    申请日：2011-02-14

    申请人： Zoran Kostic ,  Kin K. Leung ,  Hujun Yin

    发明人： Zoran Kostic ,  Kin K. Leung ,  Hujun Yin

    IPC分类号： H04W4/00

    CPC分类号： H04W48/20 ,  H04L47/10 ,  H04L47/122 ,  H04L47/14 ,  H04W24/00 ,  H04W28/08 ,  H04W48/08 ,  H04W48/16 ,  H04W84/12 ,  H04W88/08

    摘要： A network having distribution of access point loading includes access points to which mobile stations can associate themselves based upon access point beacon signal levels and loading levels for the various access points. A mobile station receives beacon signals from various access points and determines a signal strength for the received beacon signals. The mobile station also receives access point loading information from the access points. The mobile station associates with an access point based upon the access point beacon signal strengths and the access point loading information.

    摘要翻译： 具有接入点负载分布的网络包括基于接入点信标信号电平和各个接入点的负载电平的移动台能够将自身关联的接入点。 移动台从各种接入点接收信标信号，并确定接收的信标信号的信号强度。 移动台还从接入点接收接入点加载信息。 移动台基于接入点信标强度和接入点加载信息与接入点相关联。

    SYSTEM AND METHOD TO SUPPORT NETWORKING FUNCTIONS FOR MOBILE HOSTS THAT ACCESS MULTIPLE NETWORKS
    16.
    发明申请
    SYSTEM AND METHOD TO SUPPORT NETWORKING FUNCTIONS FOR MOBILE HOSTS THAT ACCESS MULTIPLE NETWORKS 失效
    用于支持接入多个网络的移动网络的网络功能的系统和方法

    公开(公告)号：US20090022152A1

    公开(公告)日：2009-01-22

    申请号：US12242771

    申请日：2008-09-30

    申请人： Paul Shala Henry ,  Zhimei Jiang ,  Byoung-Jo J. Kim ,  Kin K. Leung ,  Hui Luo ,  Nemmara K. Shankaranarayanan

    发明人： Paul Shala Henry ,  Zhimei Jiang ,  Byoung-Jo J. Kim ,  Kin K. Leung ,  Hui Luo ,  Nemmara K. Shankaranarayanan

    IPC分类号： H04L12/56 ,  H04L9/00

    CPC分类号： H04L29/1233 ,  H04L29/125 ,  H04L61/2564 ,  H04L61/2592 ,  H04L63/0272 ,  H04L63/0815 ,  H04L63/164 ,  H04L69/18 ,  H04W12/06 ,  H04W80/04 ,  H04W88/08

    摘要： An IP-based corporate network architecture and method for providing seamless secure mobile networking across office WLAN, home WLAN, public WLAN, and 2.5 G/3 G cellular networks for corporate wireless data users. The system includes Internet roaming clients (IRCs), a secure mobility gateway (SMG), optional secure IP access (SIA) gateways, and a virtual single account (VSA) server. The IRC is a special client tool installed on a mobile computer (laptop or PDA) equipped with a WLAN adaptor and a cellular modem. It is responsible for establishing and maintaining a mobile IPsec tunnel between the mobile computer and a corporate intranet. The SMG is a mobile IPsec gateway installed between the corporate intranet and the Internet. It works in conjunction with the IRC to maintain the mobile IPsec tunnel when the mobile computer is connected on the Internet via a home WLAN, a public WLAN, or a cellular network. The SIA gateway is a special IPsec gateway installed in the middle of the wired corporate intranet and an office WLAN. It works with the IRC to ensure data security and efficient use of corporate IP addresses when the mobile computer is connected to the office WLAN. The VSA server manages authentication credentials for every corporate user based on a virtual single account concept. The Internet Roaming system can provide secure, always-on office network connectivity for corporate users no matter where they are located using best available wireless networks.

    摘要翻译： 一种基于IP的企业网络架构和方法，用于为企业无线数据用户提供跨办公室WLAN，家庭WLAN，公共WLAN和2.5 G / 3G蜂窝网络的无缝安全移动网络。 该系统包括互联网漫游客户端（IRC），安全移动网关（SMG），可选的安全IP接入（SIA）网关和虚拟单一帐户（VSA）服务器。 IRC是安装在配有WLAN适配器和蜂窝调制解调器的移动计算机（笔记本电脑或PDA）上的特殊客户端工具。 它负责在移动计算机和公司内部网之间建立和维护移动IPsec隧道。 SMG是安装在企业内部网和互联网之间的移动IPsec网关。 它与IRC一起工作，以便在移动计算机通过家庭WLAN，公共WLAN或蜂窝网络在因特网上连接时维护移动IPsec隧道。 SIA网关是安装在有线企业内部网和办公室WLAN中间的专用IPsec网关。 它与IRC一起工作，以确保在移动计算机连接到办公室WLAN时数据安全并有效利用公司IP地址。 VSA服务器根据虚拟单一帐户概念管理每个公司用户的身份验证凭据。 互联网漫游系统可以为企业用户提供安全，永远在线的办公网络连接，无论他们所在的地方使用最佳可用无线网络。

    System and method for estimating interference in a packet-based wireless network
    17.
    发明申请
    System and method for estimating interference in a packet-based wireless network 有权
    用于估计基于分组的无线网络中的干扰的系统和方法

    公开(公告)号：US20090010242A1

    公开(公告)日：2009-01-08

    申请号：US12283520

    申请日：2008-09-12

    申请人： Kin K. Leung ,  Jack Harriman Winters

    发明人： Kin K. Leung ,  Jack Harriman Winters

    IPC分类号： H04J3/06

    CPC分类号： H04W52/24 ,  H04L1/0003 ,  H04L1/206 ,  H04W52/223

    摘要： A system and method for predicting future interference power in packet-switched networks is disclosed, allowing improved performance in such networks via optimized link adaptation and power control. In an embodiment for use in a cellular network, Kalman filtering can be used to provide the interference estimation through identification of the number of active co-channel interferers in the cellular networks and correlation of the interference power with the number of active interferers. A two-dimensional Kalman filter can be used to exploit that correlation to enhance prediction accuracy. In an alternative embodiment, a one-dimensional Kalman filter can be used where the number of active interferers is not considered.

    摘要翻译： 公开了一种用于预测分组交换网络中的未来干扰功率的系统和方法，其通过优化的链路自适应和功率控制来改善这些网络中的性能。 在用于蜂窝网络的实施例中，可以使用卡尔曼滤波来通过识别蜂窝网络中的活动同频道干扰源的数量来提供干扰估计，并且将干扰功率与有源干扰源的数量相关。 可以使用二维卡尔曼滤波器来利用该相关性来增强预测精度。 在替代实施例中，可以使用不考虑活动干扰源的数量的一维卡尔曼滤波器。

    Method and apparatus for controlling access to a communication channel
    18.
    发明授权
    Method and apparatus for controlling access to a communication channel 有权
    用于控制对通信信道的访问的方法和装置

    公开(公告)号：US07457307B1

    公开(公告)日：2008-11-25

    申请号：US11195876

    申请日：2005-08-03

    申请人： Herman Chien ,  Jin-Meng Ho ,  Liang A. Hong ,  Eliott Hoole ,  Kin K. Leung

    发明人： Herman Chien ,  Jin-Meng Ho ,  Liang A. Hong ,  Eliott Hoole ,  Kin K. Leung

    IPC分类号： H04L12/413

    CPC分类号： H04W74/0816 ,  H04W74/002 ,  H04W74/0833

    摘要： A method and an apparatus provide for controlled access to a shared communication medium. Time slots on a forward channel include information regarding status useful for remote units to determine whether a reverse channel is available for seizure. Additionally, information along the forward channel provides guidance to the remote units to control attempts to seize the reverse channel. In one embodiment a remote unit divides a data package into a plurality of portions and attempts to seize the reverse channel using a single portion of the data package which corresponds to one time slot on the reverse channel. It then waits until it receives notification along the forward channel that the first data portion was successfully received before it attempts to send any of the remainder of its data in consecutive time slots on the reverse channel.

    摘要翻译： 方法和装置提供对共享通信介质的受控访问。 前向信道上的时隙包括关于用于远程单元确定反向信道是否可用于发作的状态的信息。 另外，沿着前向信道的信息为远程单元提供指导，以控制占用反向信道的尝试。 在一个实施例中，远程单元将数据包分成多个部分，并尝试使用对应于反向信道上的一个时隙的数据包的单个部分来占用反向信道。 然后它等待直到它在前向信道上接收到第一数据部分被成功接收到的通知，然后它尝试在反向信道上的连续时隙中发送其数据的其余部分。