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    • 61. 发明授权
    • Method and apparatus for a high-capacity cellular network by improved sectorization and interleaved channel assignment
    • 通过改进的扇区化和交织的信道分配,高容量蜂窝网络的方法和装置
    • US06311068B1
    • 2001-10-30
    • US09321047
    • 1999-05-27
    • Kin K. LeungLi-Chun Wang
    • Kin K. LeungLi-Chun Wang
    • H04Q736
    • H04W16/12H04W16/02H04W16/24H04W28/16
    • A method and apparatus for a high-capacity cellular network by improved sectorization and interleaved channel assignment is presented. Data transmission over a cellular network is carried out by implementation of a sectorization scheme, called the Narrow-Beam Quad-sector Cell (NBQC) sectorization scheme, and the corresponding Interleaved Channel Assignments (ICA). The NBQC sectorization scheme calls for each cell of a cellular network to be divided into four sectors, with each sector covered by a 60 degree antenna. Use of the NBQC sectorization scheme allows for implementation of the corresponding ICA, in which assignment of transmission channels to each cell is based on a re-use factor of N=2. Accordingly, the interleaved channel assignments allow for the use of the transmission channels in cells which are adjacent in the cellular network.
    • 提出了一种通过改进的扇区化和交织的信道分配来实现高容量蜂窝网络的方法和装置。 通过实现称为窄波束四分区小区(NBQC)扇区化方案和相应的交织信道分配(ICA)的扇区化方案来实现蜂窝网络上的数据传输。 NBQC扇区化方案要求将蜂窝网络的每个小区划分为四个扇区,每个扇区由60度天线覆盖。 使用NBQC扇区化方案允许实现相应的ICA,其中对每个小区的传输信道的分配基于N = 2的重用因子。 因此,交织的信道分配允许在蜂窝网络中相邻的小区中使用传输信道。
    • 62. 发明授权
    • Synchronization methods for distributed processing systems having
replicated data
    • 具有复制数据的分布式处理系统的同步方法
    • US6021118A
    • 2000-02-01
    • US795263
    • 1997-02-10
    • David J. HouckKin K. LeungPeter M. Winkler
    • David J. HouckKin K. LeungPeter M. Winkler
    • G06F15/173H04L12/28H04J3/06
    • G06F15/17381
    • A data synchronization system, which in one embodiment, uses a ShuffleNet topology requiring an even number, N=2m, of nodes in the system. These nodes are organized into two sets, X=x.sub.0, . . . , x.sub.m-1 and Y=y.sub.0, . . . , y.sub.m-1, wherein the subscripts are always to be taken modulo m. Each "round" of communication entails simultaneously synchronizing the nodes in X with nodes in Y according to a matching between the two sets. The rounds are grouped into two "batches," batch B.sub.j which consists of rounds R.sub.2j-1 and R.sub.2j-2 for j.gtoreq.1. During each odd batch B.sub.2j-1, each x.sub.i synchronizes with y.sub.2i+2j-2 and with y.sub.2i+2j-1. In another embodiment, the data synchronization is based on a hypercube scheme, wherein each node is labeled by a binary string and any two nodes with their labels differing by one bit are connected by an edge and only adjacent nodes, i.e. those nodes connected by an edge, can communicate and exchange data directly according to an update schedule. In a third embodiment, a hypercube scheme is used, but the number of nodes is assumed to be a power of 2 or N=2.sup.m. This embodiment, like the second embodiment, uses the labeling of nodes by their binary representation, but the matchings of nodes used to determine the update schedule is not confined to the hypercube edges. Instead, a general cyclic matching scheme is used.
    • 数据同步系统在一个实施例中使用需要系统中偶数N = 2m的节点的ShuffleNet拓扑。 这些节点被组织成两组,X = x0,。 。 。 ,xm-1和Y = y0,。 。 。 ,ym-1,其中下标总是被取为模m。 每个“圆”通信需要根据两组之间的匹配同时使X中的节点与Y中的节点同步。 这些轮分为两个“批次”,批次Bj由j> / = 1的轮次R2j-1和R2j-2组成。 在每个奇数批次B2j-1期间,每个xi与y2i + 2j-2和y2i + 2j-1同步。 在另一个实施例中,数据同步基于超立方体方案,其中每个节点由二进制串标记,并且其标签不同于一位的任何两个节点由边缘连接,并且仅相邻节点连接,即通过 边缘,可以根据更新时间表直接进行数据交换和交换。 在第三实施例中,使用超立方体方案,但是假定节点数为2或N = 2m的幂。 该实施例与第二实施例一样,通过其二进制表示来使用节点的标注,但是用于确定更新时间表的节点的匹配不限于超立方体边缘。 相反,使用一般的循环匹配方案。
    • 63. 发明授权
    • Operations of cellular communications systems based on mobility and
teletraffic statistics collected by mobile units
    • 基于移动单元收集的移动性和电话流量统计的蜂窝通信系统的运行
    • US5623535A
    • 1997-04-22
    • US303299
    • 1994-09-08
    • Kin K. LeungSanjiv NandaKwan L. Yeung
    • Kin K. LeungSanjiv NandaKwan L. Yeung
    • H04M3/36H04W16/32H04W24/00H04W36/04H04Q7/22
    • H04W24/00H04W16/32H04W36/04
    • Each mobile unit in a cellular communications system accumulates at least one mobility or communications traffic (teletraffic) statistic representative of "typical" operation of the mobile unit within the cellular communications system. The mobile units process or collect the statistics and then transmit the aggregate statistics to a microcell or macrocell base station at time of origination of a call to or from the mobile, request for a handoff of a call by the mobile unit or the registration process. Included within the characteristics which can be monitored in accordance with the present invention are the following: cell sojourn time; area sojourn time; call holding times; call throughput; number of previous handoffs in an ongoing call; time periods between two consecutive failed handoffs for the mobile unit; and, the ratio of calls originating from a mobile unit to the number of calls terminating to a mobile unit. The accumulated data representative of these characteristics are utilized by the receiving base station to assign new and handoff calls to a microcell or a macrocell, to prioritize call handling within the cellular communications system and to assign customized customer service areas.
    • 蜂窝通信系统中的每个移动单元累积代表移动单元在蜂窝通信系统内的“典型”操作的至少一个移动性或通信业务(电信流)统计量。 移动单元处理或收集统计信息,然后在来自或来自移动站的呼叫发起时向微小区或宏小区基站发送聚合统计信息,请求移动单元的呼叫切换或注册过程。 根据本发明可以监测的特征中包括以下内容:细胞停留时间; 区域逗留时间 召唤时间; 通话量; 正在进行的呼叫中的先前切换次数; 移动单元的两个连续故障切换之间的时间段; 以及源自移动单元的呼叫与终止于移动单元的呼叫的数量的比率。 代表这些特性的累积数据被接收基站利用,以将新的和切换呼叫分配给微小区或宏小区,以优先处理蜂窝通信系统内的呼叫处理并分配定制的客户服务区域。
    • 64. 发明授权
    • Layer-2 IP networking method and apparatus for mobile hosts
    • 移动主机的二层IP组网方法和设备
    • US08462748B2
    • 2013-06-11
    • US12829360
    • 2010-07-01
    • Paul Shala HenryZhimei JiangByoung-Jo J KimKin K LeungHui Luo
    • Paul Shala HenryZhimei JiangByoung-Jo J KimKin K LeungHui Luo
    • H04W4/00H04L12/28G06F15/173
    • H04L61/2007H04L61/6022H04L69/324H04W8/26H04W76/11H04W80/04H04W88/06H04W88/182
    • A method and apparatus to enable IP networking for mobile hosts without requiring changes to be made to the TCP/IP stack in the operating system installed on the mobile hosts. The apparatus is an “intelligent device” that can be installed on or connected to a mobile host, and may comprise a software-only logical module, physical hardware, or a combination of both. To a mobile host, the intelligent device emulates a network interface such as an Ethernet card or a telephone modem. The intelligent device appears to an access network just like any regular IP host connected to the access network through a physical network interface device. The intelligent device handles all mobile networking functions for the mobile host, and may control multiple different physical network interface devices to enable a connection to the “best” access network available to the mobile user at his location.
    • 一种用于为移动主机启用IP网络的方法和装置,而不需要对安装在移动主机上的操作系统中的TCP / IP栈进行更改。 该装置是可以安装在移动主机上或连接到移动主机的“智能设备”,并且可以包括仅软件逻辑模块,物理硬件或两者的组合。 对于移动主机,智能设备模拟诸如以太网卡或电话调制解调器之类的网络接口。 就像通过物理网络接口设备连接到接入网的任何常规IP主机一样,智能设备就像接入网络一样出现。 智能设备处理移动主机的所有移动网络功能,并且可以控制多个不同的物理网络接口设备,以便连接到他所在位置的移动用户可用的“最佳”接入网络。
    • 68. 发明授权
    • Method and apparatus for controlling access to a communication channel
    • 用于控制对通信信道的访问的方法和装置
    • US07881328B2
    • 2011-02-01
    • US12267258
    • 2008-11-07
    • Herman ChienJin-Meng HoLiang A. HongElliott HooleKin K. Leung
    • Herman ChienJin-Meng HoLiang A. HongElliott HooleKin K. Leung
    • H04L12/413
    • H04W74/0816H04W74/002H04W74/0833
    • 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.
    • 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。 此外,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。