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    2.
    发明专利
    未知

    公开(公告)号：BR0103055A

    公开(公告)日：2002-04-02

    申请号：BR0103055

    申请日：2001-07-27

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHEKURI CHANDRA S ,  DRABECK LAWRENCE M ,  ZHANG YIHAO LISA

    IPC: H04B7/26 ,  H04W16/18 ,  H04Q7/20

    Abstract: Techniques for use in designing, adjusting or operating a wireless network so as to provide a desired level of performance for the network. An optimization process is applied to a set of information characterizing the network. The optimization process includes at least a pre-frequency-assignment optimization stage, which is applied prior to assignment of frequencies to one or more communication channels of the wireless network. An output of the optimization process is utilized to determine one or more operating parameters of the wireless network, such as a base station transmit power or antenna orientation.

    A LINEAR PROGRAMMING METHOD OF NETWORK DESIGN FOR CARRYING TRAFFIC FROM ENDNODES TO A CORE NETWORK AT LEAST COST
    3.
    发明专利
    A LINEAR PROGRAMMING METHOD OF NETWORK DESIGN FOR CARRYING TRAFFIC FROM ENDNODES TO A CORE NETWORK AT LEAST COST 未知

    公开(公告)号：CA2291378A1

    公开(公告)日：2000-08-23

    申请号：CA2291378

    申请日：1999-11-25

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ZHANG YIHAO LISA ,  ANDREWS DANIEL M

    IPC: H04L12/24

    Abstract: A method is disclosed, for designing an access network that is to carry communication traffic between end nodes and a core network. Information is provided that describes end node locations, the level of demand associated with each end node, available trunk types and their related capacities, and a cost structure. The cost structure includes a fixed overhead cost for each trunk type, and a service charge per unit distance for each trunk type. The provided information is incorporated in a linear program to find an optimal-cost access network. The linear program is solved to obtain a provisional solution that defines the composition and usage of each link of the optimal-cost access network. For each such link, the composition is defined by a fractional level of investment (incurring a like fraction of the corresponding overhead charge) in each pertinent trunk type. The provisional solution is rounded such that each trunk in which there is a fractional investment is either removed, or replaced by a trunk in which there is an integral investment.

    METHODS AND DEVICES FOR SCHEDULING THE TRANSMISSION OF MULTICAST MESSAGES IN WIRELESS LOCAL AREA NETWORKS
    6.
    发明申请
    METHODS AND DEVICES FOR SCHEDULING THE TRANSMISSION OF MULTICAST MESSAGES IN WIRELESS LOCAL AREA NETWORKS 审中-公开
    用于调度无线局域网中多播消息传输的方法和设备

    公开(公告)号：WO2008121212A3

    公开(公告)日：2009-02-12

    申请号：PCT/US2008003269

    申请日：2008-03-13

    Applicant: LUCENT TECHNOLOGIES INC ,  BEJERANO YIGAL ,  ZHANG YIHAO LISA

    Inventor： BEJERANO YIGAL ,  ZHANG YIHAO LISA

    IPC: H04L12/56 ,  H04L12/28 ,  H04W4/06 ,  H04W16/02 ,  H04W72/12

    CPC classification number: H04L47/10 ,  H04L12/1881 ,  H04L12/1886 ,  H04L51/38 ,  H04W16/02 ,  H04W72/005

    Abstract: Real-time broadcast and multicast based packet transmissions/services over a wireless, local area networks (WLAN) may be improved by reducing the interference across neighboring access points (APs) while minimally impacting the performance of unicast transmissions/services. Minimal impact is assured by scheduling the transmission of multicast packet flows such that the duration of the time period required to transmit such flows is also minimized. One type of method provides a constant approximation of an optimal time period/schedule while another provides a logarithmic approximation of an optimal time

    Abstract translation: 可以通过减少相邻接入点（AP）之间的干扰，同时最小程度地影响单播传输/服务的性能，来改善通过无线局域网（WLAN）的基于实时广播和多播的分组传输/服务。 通过调度多播分组流的传输来确保最小的影响，使得传输这样的流所需的时间段的持续时间也最小化。 一种类型的方法提供最佳时间段/时间表的恒定近似，而另一种提供最佳时间的对数近似

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