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    SYSTEM AND METHOD FOR RATE SHIFTING FOR WIRELESS VOIP
    2.
    发明申请
    SYSTEM AND METHOD FOR RATE SHIFTING FOR WIRELESS VOIP 审中-公开
    用于无线电话速率移位的系统和方法

    公开(公告)号：WO2007095440A3

    公开(公告)日：2008-03-27

    申请号：PCT/US2007061741

    申请日：2007-02-07

    Applicant: CISCO TECH INC

    Inventor： QIAN LU ,  SHETTY SANDEEP

    IPC: H04J1/16

    CPC classification number: H04L1/0002 ,  H04L1/0018 ,  H04L1/0021 ,  H04L1/18 ,  H04L47/10 ,  H04L47/14 ,  H04L47/2416 ,  H04L47/25 ,  H04L47/29 ,  H04L65/80

    Abstract: A method of rate shifting specially suited for the voice traffic, which differentiates poor channel conditions from a heavily loaded channel of a WLAN and adapts to the network traffic condition and channel condition promptly with low rate of false shifting. Determining when to rate shift is based on a combination of the received signal strength indication and the retry rate.

    Abstract translation: 一种特别适用于语音流量的速率偏移的方法，其将恶劣的信道条件与WLAN的重负载信道区分开，并以低误码率适时适应网络流量状况和信道状态。 确定何时进行速率偏移是基于接收信号强度指示和重试速率的组合。

    3.
    发明专利
    未知

    公开(公告)号：DE602006011181D1

    公开(公告)日：2010-01-28

    申请号：DE602006011181

    申请日：2006-08-07

    Applicant: CISCO TECH INC

    Inventor： HART BRIAN D ,  DOUGLAS BRETTON LEE ,  QIAN LU

    IPC: H04W16/18

    Abstract: Described herein are a computer-implemented method of determining a power plan/frequency plan combination assigning transmit frequency channels and transmit powers for a plurality of managed access points (APs) of a wireless network. Also described herein is a carrier medium carrying computer readable code configured to cause one or more processors of a processing system to implement the computer implemented method of determining a power plan/frequency plan combination. The method includes determining candidate power plans for the access points, including determining candidate transmit powers for the access points, determining a candidate frequency plan corresponding to each of the determined candidate power plans using a frequency plan determining method to determine a set of candidate power plan/frequency plan combinations, and rating each combination of a candidate power plan and candidate frequency plan according to an evaluation criterion, and selecting a preliminary power plan/frequency plan combination based on the rating. One embodiment of the method further includes determining a final power plan for the preliminary frequency plan of the preliminary power plan/frequency plan combination to obtain a final power plan/frequency plan combination.

    SYSTEM AND METHOD TO SIMULATE AND MANAGE A WIRELESS LOCAL AREA NETWORK (WLAN)
    4.
    发明专利
    SYSTEM AND METHOD TO SIMULATE AND MANAGE A WIRELESS LOCAL AREA NETWORK (WLAN) 未知

    公开(公告)号：CA2548463A1

    公开(公告)日：2005-08-04

    申请号：CA2548463

    申请日：2004-12-03

    Applicant: CISCO TECH INC

    Inventor： CISAR JAMES ,  QIAN LU

    IPC: H04L12/24 ,  H04L12/28 ,  H04W16/18 ,  H04W16/22

    Abstract: In accordance with one embodiment, an article of manufacture embodied in a computer-readable medium for use in a processing system for modeling configurations of a wireless local area network is provided. The article of manufacture includes a characteristic and configurations receiving logic for causing the processing system to determine a set of original characteristics and configurations of the wireless local area network. As well, a simulation logic for causing the processing system to simulate an outcome based upon a set of configurations in accordance with a goal. In other embodiments, the goal may be user defined or based upon historical data. Further, a configuration creation logic for causing the processing system to create a s et of new configurations based upon the outcome and a management logic for causing the processing system to apply the set of new configurations to the wireless local area network are provided.

    5.
    发明专利
    未知

    公开(公告)号：AT452519T

    公开(公告)日：2010-01-15

    申请号：AT06800898

    申请日：2006-08-07

    Applicant: CISCO TECH INC

    Inventor： HART BRIAN ,  DOUGLAS BRETTON ,  QIAN LU

    IPC: H04W16/18

    Abstract: Described herein are a computer-implemented method of determining a power plan/frequency plan combination assigning transmit frequency channels and transmit powers for a plurality of managed access points (APs) of a wireless network. Also described herein is a carrier medium carrying computer readable code configured to cause one or more processors of a processing system to implement the computer implemented method of determining a power plan/frequency plan combination. The method includes determining candidate power plans for the access points, including determining candidate transmit powers for the access points, determining a candidate frequency plan corresponding to each of the determined candidate power plans using a frequency plan determining method to determine a set of candidate power plan/frequency plan combinations, and rating each combination of a candidate power plan and candidate frequency plan according to an evaluation criterion, and selecting a preliminary power plan/frequency plan combination based on the rating. One embodiment of the method further includes determining a final power plan for the preliminary frequency plan of the preliminary power plan/frequency plan combination to obtain a final power plan/frequency plan combination.

    DATA RATE SHIFTING METHODS AND TECHNIQUES
    6.
    发明申请
    DATA RATE SHIFTING METHODS AND TECHNIQUES 审中-公开
    数据速率移位方法和技术

    公开(公告)号：WO2005112483A3

    公开(公告)日：2006-10-19

    申请号：PCT/US2005015397

    申请日：2005-05-02

    Applicant: CISCO TECH INC

    Inventor： QIAN LU ,  LEWIS MICHAEL E

    IPC: G01R31/08 ,  H04L12/28 ,  H04L12/56 ,  H04W24/00 ,  H04W28/22

    CPC classification number: H04W28/22 ,  H04L43/0829 ,  H04L43/0888 ,  H04L47/14 ,  H04L47/25 ,  H04W24/00

    Abstract: A technique for determining when to change a data rate by determining the cause of packet loss. The technique distinguishes between collision mediated packet loss and poor signal mediated packet loss. Rate shifting to a lower rate is performed after determining poor signals are causing packet loss. After switching to a lower rate, the packet loss rate can be compared to the pre-switch packet loss rate. If the packet loss rate has not improved by shifting to a lower data rate, then the data rate can be shifted to a higher rate. The technique can use a combination of channel response, signal strength, packet loss rate and throughput to determine when to switch data rates. A communication unit can maintain separate histories for each unit it is communicating with and employ a different data rate for each unit.

    Abstract translation: 一种用于通过确定分组丢失的原因来确定何时改变数据速率的技术。 该技术区分了冲突介入的分组丢失和信号中介的分组丢失。 在确定不良信号导致分组丢失之后，执行速率转换到较低速率。 切换到较低速率后，可以将丢包率与交换机前的丢包率进行比较。 如果通过转移到较低的数据速率，丢包率没有得到改善，则数据速率可以转移到更高的速率。 该技术可以使用信道响应，信号强度，丢包率和吞吐量的组合来确定何时切换数据速率。 通信单元可以为与每个单元进行通信的每个单元维护单独的历史记录，并为每个单元采用不同的数据速率。

    MULTIPLE RECEIVER AGGREGATION
    7.
    发明申请
    MULTIPLE RECEIVER AGGREGATION 审中-公开
    多重接收者聚合

    公开(公告)号：WO2005114915A3

    公开(公告)日：2006-05-11

    申请号：PCT/US2005011432

    申请日：2005-04-04

    Applicant: CISCO TECH INC

    Inventor： QIAN LU

    IPC: H04L12/28 ,  H04J3/24

    CPC classification number: H04W28/06 ,  H04L1/1628 ,  H04W74/04

    Abstract: A technique for multiple receiver aggregation that allows for multiple immediate responses of acknowledgements or block acknowledgements. The technique uses a spoofed network allocation vector (NAV) (124) implemented within an aggregate's PLCP header (112) to protect the aggregate and all of the immediate responses from multiple receivers. The immediate responses are scheduled, the information indicating the scheduled offset time and granted transmission duration for response of each receiver being included in the physical sublayer data unit (PSDU) headers within the aggregate.

    Abstract translation: 用于多个接收器聚合的技术，其允许确认或块确认的多个即时响应。 该技术使用在聚合的PLCP头部（112）内实现的欺骗性网络分配向量（NAV）（124）来保护来自多个接收器的聚合和所有即时响应。 立即响应被调度，指示预定偏移时间的信息以及每个接收机的响应的授予传输持续时间被包括在聚合体内的物理子层数据单元（PSDU）报头中。

    MULTIPLE RECEIVER AGGREGATION
    8.
    发明专利
    MULTIPLE RECEIVER AGGREGATION 未知

    公开(公告)号：CA2561871C

    公开(公告)日：2009-06-30

    申请号：CA2561871

    申请日：2005-04-04

    Applicant: CISCO TECH INC

    Inventor： QIAN LU

    IPC: H04J3/24 ,  H04L12/28

    Abstract: A technique for multiple receiver aggregation that allows for multiple immediate responses of acknowledgements or block acknowledgements. The technique uses a spoofed network allocation vector (NAV) (124) implemented within an aggregate's PLCP header (112) to protect the aggregate and all of the immediate responses from multiple receivers. The immediate responses are scheduled, the information indicating the scheduled offset time and granted transmission duration for response of each receiver being included in the physical sublayer data unit (PSDU) headers within the aggregate.

    MULTIPLE RECEIVER AGGREGATION
    10.
    发明专利
    MULTIPLE RECEIVER AGGREGATION 未知

    公开(公告)号：CA2561871A1

    公开(公告)日：2005-12-01

    申请号：CA2561871

    申请日：2005-04-04

    Applicant: CISCO TECH INC

    Inventor： QIAN LU

    IPC: H04J3/24 ,  H04L12/28

    Abstract: A technique for multiple receiver aggregation that allows for multiple immediate responses of acknowledgements or block acknowledgements. The technique uses a spoofed network allocation vector (NAV) (124) implemented within an aggregate's PLCP header (112) to protect the aggregate and all of the immediate responses from multiple receivers. The immediate responses are scheduled, the information indicating the scheduled offset time and granted transmission duration for response of each receiver being included in the physical sublayer data unit (PSDU) headers within the aggregate.

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