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    1.
    发明专利
    未知

    公开(公告)号：DE602005004477D1

    公开(公告)日：2008-03-13

    申请号：DE602005004477

    申请日：2005-10-25

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： LAKSHMAN TIRUNELL V ,  NANDAGOPAL THYAGARAJAN ,  RAMJEE RAMACHANDRAN ,  WOO THOMAS Y ,  SABNANI KRISHAN K

    IPC: H04L45/60

    Abstract: The SoftRouter architecture separates the implementation of control plane functions from packet forwarding functions. In this architecture, all control plane functions are implemented on general purpose servers called the control elements (CEs) 200, 204 that may be multiple hops away from the forwarding elements (FEs) 202, 206. A network element (NE) or a router is formed using dynamic binding between the CEs and the FEs. The flexibility of the SoftRouter architecture over conventional routers with collocated and tightly integrated control and forwarding functions results in increased reliability, increased scalability, increased security, ease of adding new functionality, and decreased cost.

    2.
    发明专利
    未知

    公开(公告)号：DE602005004477T2

    公开(公告)日：2009-03-19

    申请号：DE602005004477

    申请日：2005-10-25

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： LAKSHMAN TIRUNELL V ,  NANDAGOPAL THYAGARAJAN ,  RAMJEE RAMACHANDRAN ,  WOO THOMAS Y ,  SABNANI KRISHAN K

    IPC: H04L45/60

    Abstract: The SoftRouter architecture separates the implementation of control plane functions from packet forwarding functions. In this architecture, all control plane functions are implemented on general purpose servers called the control elements (CEs) 200, 204 that may be multiple hops away from the forwarding elements (FEs) 202, 206. A network element (NE) or a router is formed using dynamic binding between the CEs and the FEs. The flexibility of the SoftRouter architecture over conventional routers with collocated and tightly integrated control and forwarding functions results in increased reliability, increased scalability, increased security, ease of adding new functionality, and decreased cost.

    3.
    发明专利
    未知

    公开(公告)号：DE602005001601D1

    公开(公告)日：2007-08-23

    申请号：DE602005001601

    申请日：2005-10-25

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ANSARI FURQUAN AHMED ,  LAKSHMAN TIRUNELL V ,  NANDAGOPAL THYAGARAJAN ,  RAMJEE RAMACHANDRAN ,  WOO THOMAS Y

    IPC: H04L12/56

    Abstract: The SoftRouter architecture separates the implementation of control plane functions from packet forwarding functions. In this architecture, all control plane functions are implemented on general purpose servers called the control elements (CEs) 502 that may be multiple hops away from the forwarding elements (FEs) 506. A network element (NE) or a router is formed using dynamic binding between the CEs 502 and the FEs 506. There is a protocol failover mechanism for handling failovers initiated by FEs 506 to transfer control from one CE 502 to another CE 502.

    4.
    发明专利
    未知

    公开(公告)号：DE602005018431D1

    公开(公告)日：2010-02-04

    申请号：DE602005018431

    申请日：2005-10-25

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： FURQUAN AHMED ANSARI ,  HAVEMANN MARTIN ,  LAKSHMAN TIRUNELL V ,  NANDAGOPAL THYAGARAJAN ,  RAMJEE RAMACHANDRAN ,  WOO THOMAS Y

    IPC: H04L12/56

    Abstract: A SoftRouter architecture deconstructs routers by separating the control entities of a router from its forwarding components, enabling dynamic binding between them. In the SoftRouter architecture, control plane functions are aggregated and implemented on a few smart servers which control forwarding elements that are multiple network hops away. A dynamic binding protocol performs network-wide control plane failovers. Network stability is improved by aggregating and remotely hosting routing protocols, such as OSPF and BGP. This results in faster convergence, lower protocol messages processed, and fewer route changes following a failure. The SoftRouter architecture includes a few smart control entities 402, 404 that manage a large number of forwarding elements 406 to provide greater support for network-wide control. In the SoftRouter architecture, routing protocols operate remotely at a control element and control one or more forwarding elements by downloading the forwarding tables, etc. into the forwarding elements. Intra-domain routing and inter-domain routing are also included.

    5.
    发明专利
    未知

    公开(公告)号：DE602005001601T2

    公开(公告)日：2008-03-13

    申请号：DE602005001601

    申请日：2005-10-25

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ANSARI FURQUAN AHMED ,  LAKSHMAN TIRUNELL V ,  NANDAGOPAL THYAGARAJAN ,  RAMJEE RAMACHANDRAN ,  WOO THOMAS Y

    IPC: H04L12/56

    Abstract: The SoftRouter architecture separates the implementation of control plane functions from packet forwarding functions. In this architecture, all control plane functions are implemented on general purpose servers called the control elements (CEs) 502 that may be multiple hops away from the forwarding elements (FEs) 506. A network element (NE) or a router is formed using dynamic binding between the CEs 502 and the FEs 506. There is a protocol failover mechanism for handling failovers initiated by FEs 506 to transfer control from one CE 502 to another CE 502.

    ESTIMATION OF THE CARDINALITY OF A SET OF WIRELESS DEVICES
    7.
    发明申请
    ESTIMATION OF THE CARDINALITY OF A SET OF WIRELESS DEVICES 审中-公开
    一套无线设备的可靠性估计

    公开(公告)号：WO2008039306A3

    公开(公告)日：2008-09-18

    申请号：PCT/US2007019909

    申请日：2007-09-12

    Applicant: LUCENT TECHNOLOGIES INC ,  KODIALAM MURALIDHARAN SAMPATH ,  NANDAGOPAL THYAGARAJAN

    Inventor： KODIALAM MURALIDHARAN SAMPATH ,  NANDAGOPAL THYAGARAJAN

    IPC: H04L12/28 ,  G06K7/00

    CPC classification number: G06K7/10029 ,  H04W24/00 ,  H04W74/04

    Abstract: In one embodiment, a method for estimating the cardinality of one or more tags in a system that has the one or more tags and one or more readers. The reader issues a command requesting that the tags identify themselves. The command includes timing information defining a total number of timeslots. In response to the command, each of the one or more tags (i) selects a timeslot in which to reply to the command and (ii) issues a reply in the selected timeslot. The method includes: (a) issuing the command; (b) receiving, in one or more timeslots, replies from the one or more tags; and (c) deriving an estimate of the cardinality of the one or more tags in the system based on at least one of: (i) the number of zero slots, wherein a zero slot is a timeslot that has no tags transmitting therein, (ii) the number of singleton slots, wherein a singleton slot is a timeslot that has only one tag transmitting therein, and (iii) the number of collision slots, wherein a collision slot is a timeslot that has more than one tag transmitting therein.

    Abstract translation: 在一个实施例中，一种用于估计系统中具有一个或多个标签和一个或多个读取器的一个或多个标签的基数的方法。 读者发出一个命令，要求标签标识自己。 该命令包括定义总时隙数的定时信息。 响应于该命令，一个或多个标签（i）中的每一个选择在其中回复命令的时隙，以及（ii）在所选择的时隙中发出回复。 该方法包括：（a）发出命令; （b）在一个或多个时隙中接收来自一个或多个标签的答复; 以及（c）基于以下中的至少一个导出系统中的一个或多个标签的基数的估计：（i）零时隙的数量，其中零时隙是其中没有标签发送的时隙（ ii）单例时隙的数量，其中单个时隙是仅在其中发送一个标签的时隙，以及（iii）冲突时隙的数量，其中，冲突时隙是具有多于一个标签在其中发送的时隙。

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