Maintaining data communication through neighboring mobile units during handoff
    11.
    发明授权
    Maintaining data communication through neighboring mobile units during handoff 有权
    在切换期间通过邻近的移动单元维护数据通信

    公开(公告)号:US06377805B1

    公开(公告)日:2002-04-23

    申请号:US09368120

    申请日:1999-08-04

    IPC分类号: H04Q720

    CPC分类号: H04W36/08 H04W84/18 H04W88/04

    摘要: A data communication for a handoff mobile unit is maintained by data forwarding through neighboring mobile units in indoor wireless cellular communication networks operates such that, when the master unit has no available channels, the mobile unit switches over to master status to create an ad hoc cell. The mobile unit then pages neighboring slave mobile units for data forwarding assistance. The mobile unit chooses one or more slave mobile units and establishes wireless links with the chosen slave mobile units. These chosen mobile units then have two masters; one the master unit of the cell and the other the handoff mobile unit which has created the ad hoc cell. A list of the slave mobile units in the ad hoc cell is sent to the network server, and data communication proceeds with data forwarding through the chosen mobile slave units. When a channel becomes available with the master unit for the cell, the handoff mobile unit becomes a slave mobile unit to the master unit and the ad hoc cell is dissolved.

    摘要翻译: 通过在室内无线蜂窝通信网络中通过相邻移动单元的数据转发来维护用于切换移动单元的数据通信操作,使得当主单元没有可用信道时,移动单元切换到主状态以创建自组织小区 。 移动单元然后对相邻的从动单元进行页面数据转发协助。 移动单元选择一个或多个从属移动单元并与所选择的从属移动单元建立无线链路。 这些选择的移动单元然后有两个主人; 一个是小区的主单元,另一个是已经创建了自组织小区的切换移动单元。 Ad hoc小区中的从属移动单元的列表被发送到网络服务器,并且数据通信通过所选择的移动从属单元进行数据转发。 当信道对于小区的主单元可用时,切换移动单元变为主单元的从属移动单元,并且ad hoc小区被解散。

    TRUST-BASED METHODOLOGY FOR SECURING VEHICLE-TO-VEHICLE COMMUNICATIONS
    12.
    发明申请
    TRUST-BASED METHODOLOGY FOR SECURING VEHICLE-TO-VEHICLE COMMUNICATIONS 失效
    基于信任的方法,用于保护车辆到车辆通信

    公开(公告)号:US20100201543A1

    公开(公告)日:2010-08-12

    申请号:US12368100

    申请日:2009-02-09

    IPC分类号: G08G1/00

    CPC分类号: G08G1/161

    摘要: A vehicle-to-vehicle communications system that employs a challenge/response based process to ensure that information received from a vehicle is reliable. The subject vehicle transmits a challenge question to the suspect vehicle to determine whether the suspect vehicle is a reliable source of information. The process increases a number of tokens in a token bucket for the suspect vehicle if the response to the challenge question is correct, and decreases the number of tokens in the token bucket for the suspect vehicle if the response to the challenge question is incorrect. The subject vehicle accepts a message from the suspect vehicle if the number of tokens in the bucket for the suspect vehicle is greater than a predetermined upper threshold, and discards the message from the suspect vehicle if the number of tokens in the bucket for the suspect vehicle is less than a predetermined lower threshold.

    摘要翻译: 一种车对车通信系统,其采用基于挑战/响应的过程来确保从车辆接收的信息是可靠的。 主题车辆将疑问问题传送给可疑车辆,以确定可疑车辆是否是可靠的信息来源。 如果对挑战问题的响应是正确的,则该过程增加用于可疑车辆的令牌桶中的令牌数量,并且如果对挑战问题的响应不正确,则可以减少可疑车辆的令牌桶中的令牌数量。 如果用于可疑车辆的铲斗中的令牌数量大于预定的上限阈值,则主体车辆接受来自可疑车辆的消息,并且如果用于可疑车辆的桶中的令牌数量,则丢弃来自可疑车辆的消息 小于预定的下阈值。

    System and method for efficient and collective adjustment of sensor reporting ranges for long-lived queries
    13.
    发明申请
    System and method for efficient and collective adjustment of sensor reporting ranges for long-lived queries 有权
    用于长期查询的传感器报告范围的高效和集体调整的系统和方法

    公开(公告)号:US20070208535A1

    公开(公告)日:2007-09-06

    申请号:US11365215

    申请日:2006-03-01

    IPC分类号: G06F17/40

    CPC分类号: H04Q9/00 G01D1/18

    摘要: A system and method for providing energy-efficient support of continuous aggregate queries in a sensor network by efficiently orchestrating the collection and transmission of data gathered by a collective set of sensors to ensure conformance to a specified QoI bound. To ensure this, the sink communicates a potentially different value of precision range or interval to each individual sensor; the sensor is adapted to only report its samples back to the sink if the sample values fall outside this specified range. An additional way to specify temporally varying precision ranges to an individual sensor or groups of sensors is provided without having to explicitly communicate the precision bounds for these different time instants. Using temporally varying precision ranges permits the exploitation of temporal correlation among the sample values recorded by an individual sensor to further reduce the need for reports from the sensors. This approach is more energy-efficient and improves performance of long-running pervasive environment monitoring applications.

    摘要翻译: 一种用于通过有效地协调由一组传感器收集的数据的收集和传输来确保符合指定的QoI约束来在传感器网络中提供连续聚合查询的能量效率支持的系统和方法。 为了确保这一点,接收器将精确范围或间隔的潜在不同值传达给每个单独的传感器; 如果样品值超出该指定范围,则传感器仅适用于将其样品报告回接收器。 提供了一种为单个传感器或传感器组指定时间上变化的精度范围的附加方式,而不必明确地传达对于这些不同时刻的精确范围。 使用时间上不同的精度范围允许利用单个传感器记录的样本值之间的时间相关性,以进一步减少对传感器报告的需要。 这种方法更节能,并提高长期运行的普及环境监测应用的性能。

    Traffic management in packet-based networks
    14.
    发明授权
    Traffic management in packet-based networks 失效
    基于分组的网络中的流量管理

    公开(公告)号:US06958998B2

    公开(公告)日:2005-10-25

    申请号:US09901229

    申请日:2001-07-09

    申请人: Rajeev Shorey

    发明人: Rajeev Shorey

    IPC分类号: H04L12/56

    摘要: Providing packet-based service differentiation on packet-based networks involves first determining information associated with packets as a basis for inferring connection characteristics associated with the respective packet, as the packets pass though a particular network node. Statistical measures based on numerical values of, for example, Round Trip Time (RTT), is used to characterize connections as being, in this case “long” or “short”. “Long” connections are given a higher priority than “short” connections. Accordingly, the assigned priority associated with particular packets can be used to adjust drop probabilities for those packets.

    摘要翻译: 在基于分组的网络上提供基于分组的服务区分包括首先确定与分组相关联的信息作为推断与相应分组相关联的连接特征的基础,因为分组通过特定的网络节点。 基于例如“往返时间(RTT)”的数值的统计量度量被用于将连接表征为在这种情况下为“长”或“短”。 “长”连接被赋予比“短”连接更高的优先级。 因此,可以使用与特定分组相关联的分配优先级来调整那些分组的丢弃概率。

    Trust-based methodology for securing vehicle-to-vehicle communications
    16.
    发明授权
    Trust-based methodology for securing vehicle-to-vehicle communications 失效
    用于确保车对车通信的基于信任的方法

    公开(公告)号:US08194550B2

    公开(公告)日:2012-06-05

    申请号:US12368100

    申请日:2009-02-09

    CPC分类号: G08G1/161

    摘要: A vehicle-to-vehicle communications system that employs a challenge/response based process to ensure that information received from a vehicle is reliable. The subject vehicle transmits a challenge question to the suspect vehicle to determine whether the suspect vehicle is a reliable source of information. The process increases a number of tokens in a token bucket for the suspect vehicle if the response to the challenge question is correct, and decreases the number of tokens in the token bucket for the suspect vehicle if the response to the challenge question is incorrect. The subject vehicle accepts a message from the suspect vehicle if the number of tokens in the bucket for the suspect vehicle is greater than a predetermined upper threshold, and discards the message from the suspect vehicle if the number of tokens in the bucket for the suspect vehicle is less than a predetermined lower threshold.

    摘要翻译: 一种车对车通信系统,其采用基于挑战/响应的过程来确保从车辆接收的信息是可靠的。 主题车辆将疑问问题传送给可疑车辆,以确定可疑车辆是否是可靠的信息来源。 如果对挑战问题的响应是正确的,则该过程增加用于可疑车辆的令牌桶中的令牌数量,并且如果对挑战问题的响应不正确,则可以减少可疑车辆的令牌桶中的令牌数量。 如果用于可疑车辆的铲斗中的令牌数量大于预定的上限阈值,则主体车辆接受来自可疑车辆的消息,并且如果用于可疑车辆的桶中的令牌数量,则丢弃来自可疑车辆的消息 小于预定的下阈值。

    Reduction of device discovery delays in frequency hopping-based ad-hoc networks
    17.
    发明授权
    Reduction of device discovery delays in frequency hopping-based ad-hoc networks 有权
    减少基于跳频的自组织网络中的设备发现延迟

    公开(公告)号:US07092368B2

    公开(公告)日:2006-08-15

    申请号:US09785577

    申请日:2001-02-16

    CPC分类号: H04W40/246 H04W84/18

    摘要: A method for reducing device discovery delays in frequency hopping based ad-hoc networks is disclosed. According to the method, an activity being performed is periodically interrupted to scan for inquiry messages from other devices for a pre-determined period time period. Processing of a received inquiry message, in accordance with normal procedures applicable to the particular frequency hopping based ad-hoc network, occurs after expiry of a random time period. At the end of the predetermined time period, the original activity is returned to. A device for use in frequency hopping based ad-hoc networks that embodies the described method and a computer program product for such a device, are also disclosed.

    摘要翻译: 公开了一种减少基于跳频的自组织网络中设备发现延迟的方法。 根据该方法,正在执行的活动被周期性地中断以扫描来自其他设备的查询消息的预定周期时间段。 根据适用于特定跳频的自组织网络的正常程序处理接收到的查询消息,是在随机时间段到期之后发生的。 在预定时间段结束时,返回原始活动。 还公开了一种用于基于跳频的自组织网络的装置,其实现了所描述的方法和用于这种装置的计算机程序产品。

    Methodology for improving the performance of asynchronous data traffic over TDD/TDMA wireless networks
    18.
    发明授权
    Methodology for improving the performance of asynchronous data traffic over TDD/TDMA wireless networks 失效
    通过TDD / TDMA无线网络提高异步数据流量性能的方法

    公开(公告)号:US06963534B1

    公开(公告)日:2005-11-08

    申请号:US09680168

    申请日:2000-10-05

    摘要: The present invention relates to a computer implemented system for transferring data over a master driven TDD/TDMA based wireless network operating with minimum delay in end-to-end transmission by achieving optimum time slot utilization by minimizing the number of baseband packets created for each Link layer packet, where each baseband packet of is a size corresponding to one of a permitted set of capacities ‘C1, C2, . . . Cn’. The system also optimizes sharing of bandwidth, higher link utilization and low baseband packet transmission queue occupancy by adaptive scheduling of the transmission of the baseband packets in the queues. The invention also provides a method and computer program product for the above system.

    摘要翻译: 本发明涉及一种计算机实现的系统,用于通过在端对端传输中以最小延迟操作的主驱动TDD / TDMA无线网络上传送数据,通过最小化为每个链路创建的基带分组数量来实现最佳时隙利用 层分组,其中每个基带分组的大小对应于允许的容量集合C 1,C 2 2之一。 。 。 Cn'。 该系统通过队列中基带分组传输的自适应调度,优化了带宽共享,链路利用率较高,低基带分组传输队列占用率。 本发明还提供了一种用于上述系统的方法和计算机程序产品。