利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

131 条记录 (耗时 0.029 秒)

    Wireless network including request to trigger function
    54.
    发明申请
    Wireless network including request to trigger function 审中-公开
    无线网络包括触发功能请求

    公开(公告)号：US20090225731A1

    公开(公告)日：2009-09-10

    申请号：US12075368

    申请日：2008-03-10

    申请人： Jarkko Kneckt ,  Janne Marin ,  Mika Kasslin

    发明人： Jarkko Kneckt ,  Janne Marin ,  Mika Kasslin

    IPC分类号： H04Q7/24 ,  G08C17/00

    CPC分类号： H04L1/1685 ,  H04L2001/0093 ,  H04L2001/0097 ,  H04W52/0216 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/22

    摘要： In one aspect thereof the invention provides a method that includes transmitting a beacon frame from a first mesh point to a second mesh point; determining if a trigger frame is received at the first mesh point within some predetermined period of time from the second mesh point and, if the trigger frame is not received, transmitting a request to trigger frame from the first mesh point to the second mesh point. In another aspect thereof the invention provides a method that includes receiving a request to trigger frame at a first mesh point from a second mesh point and in response, transmitting an acknowledgment to the request to trigger frame to the second mesh point. A computer-readable medium storing program instructions to implement the methods is also disclosed, as are corresponding apparatus.

    摘要翻译： 在其一个方面，本发明提供了一种方法，其包括将信标帧从第一网格点传送到第二网格点; 确定在距离所述第二网格点的某个预定时间段内是否在所述第一网格点处接收到触发帧，并且如果未接收到所述触发帧，则将从所述第一网格点触发帧的请求发送到所述第二网格点。 在另一方面，本发明提供了一种方法，其包括从第二网格点接收在第一网格点处触发帧的请求，并作为响应，向所述第二网格点发送对触发帧的请求的确认。 还公开了存储用于实现方法的程序指令的计算机可读介质，以及相应的装置。

    TECHNIQUES FOR RTS/CTS USAGE FOR WIRELESS NETWORKS
    55.
    发明申请
    TECHNIQUES FOR RTS/CTS USAGE FOR WIRELESS NETWORKS 有权
    RTS / CTS用于无线网络的技术

    公开(公告)号：US20080144586A1

    公开(公告)日：2008-06-19

    申请号：US11956909

    申请日：2007-12-14

    申请人： Jarkko Kneckt ,  Mika Kasslin

    发明人： Jarkko Kneckt ,  Mika Kasslin

    IPC分类号： H04B7/212

    CPC分类号： H04W74/002 ,  H04W24/00

    摘要： Various embodiments are disclosed relating to techniques for RTS/CTS usage in a wireless network. According to an example embodiment, a network performance may be measured within a wireless network. A variety of parameters may be measured at a wireless node to determine a network performance. In addition, it may be determined whether the network performance has reached a degraded performance threshold. A frame is transmitted via the wireless network. If the network performance has reached the degraded performance threshold, the frame may be transmitted using a Request-to-Send/Clear-to-Send (RTS/CTS) protection. In another example embodiment, a frame may be transmitted using RTS/CTS protection if an estimated transmission time for the frame exceeds a transmission time threshold.

    摘要翻译： 公开了关于无线网络中RTS / CTS使用的技术的各种实施例。 根据示例实施例，可以在无线网络内测量网络性能。 可以在无线节点处测量各种参数以确定网络性能。 此外，可以确定网络性能是否已经达到降低的性能阈值。 通过无线网络传输帧。 如果网络性能已经达到降低的性能阈值，则可以使用请求发送/清除发送（RTS / CTS）保护来发送该帧。 在另一个示例实施例中，如果帧的估计传输时间超过传输时间阈值，则可以使用RTS / CTS保护来发送帧。

    RADIO TRANSMISSION SCHEDULING ACCORDING TO MULTIRADIO CONTROL IN A RADIO MODEM
    56.
    发明申请
    RADIO TRANSMISSION SCHEDULING ACCORDING TO MULTIRADIO CONTROL IN A RADIO MODEM 有权
    基于无线电调制解调器的多径控制的无线传输调度

    公开(公告)号：US20080137636A1

    公开(公告)日：2008-06-12

    申请号：US11609049

    申请日：2006-12-11

    申请人： Mika Kasslin ,  Niko Kiukkonen ,  Carl Wijting

    发明人： Mika Kasslin ,  Niko Kiukkonen ,  Carl Wijting

    IPC分类号： H04J3/16

    CPC分类号： H04W88/06 ,  H04W72/12

    摘要： A system for managing the simultaneous operation of a plurality of radio modems in a single wireless communication device (WCD). The multiradio control may be integrated into the WCD as a subsystem responsible for scheduling wireless communications by temporarily enabling or disabling the plurality of radio modems within the device. The multiradio control system may comprise a multiradio controller (MRC) and a plurality dedicated radio interfaces. The radio interfaces are dedicated to quickly conveying delay sensitive information to and from the radio modems. The modems may further include control features that take information from the MRC as an input in determining the priority of messages to be sent out to a receiving device. Uplink and/or downlink operations might, for instance, be performed. Instruction that operation can commence prior to an assigned time period might, for example, be provided. Channel contention might, for instance, be initiated in response to the instruction.

    摘要翻译： 一种用于在单个无线通信设备（WCD）中管理多个无线电调制解调器的同时操作的系统。 多重控制可以作为负责通过临时启用或禁用设备内的多个无线电调制解调器来调度无线通信的子系统被集成到WCD中。 多无线电控制系统可以包括多无线电控制器（MRC）和多个专用无线电接口。 无线电接口专用于向无线电调制解调器和/或从无线电调制解调器快速传送延迟敏感信息。 调制解调器还可以包括在确定要发送到接收设备的消息的优先级时从MRC获取信息作为输入的控制特征。 例如，可以执行上行链路和/或下行链路操作。 可以例如提供在指定的时间段之前开始操作的指令。 例如，频道争用可以响应于该指令来启动。

    Multiradio control interface
    57.
    发明申请
    Multiradio control interface 有权
    多无线控制接口

    公开(公告)号：US20070263709A1

    公开(公告)日：2007-11-15

    申请号：US11431541

    申请日：2006-05-11

    申请人： Mika Kasslin ,  Niko Kiukkonen ,  Martti Virtanen

    发明人： Mika Kasslin ,  Niko Kiukkonen ,  Martti Virtanen

    IPC分类号： H04L5/16

    CPC分类号： H04W88/06 ,  H04B1/406 ,  H04W16/14 ,  H04W72/1215

    摘要： A system for managing the simultaneous operation of a plurality of radio modems in a single wireless communication device (WCD). The multiradio control may be integrated into the WCD as a subsystem responsible for scheduling wireless communications by temporarily enabling or disabling the plurality of radio modems within the device. The multiradio control system may comprise a multiradio controller (MRC) and a plurality dedicated radio interfaces. The radio interfaces are dedicated to quickly conveying delay sensitive information to and from the radio modems. This information may be requested by the MRC, or provided by one or more of the plurality of radio modems, if a change occurs during operation.

    摘要翻译： 一种用于在单个无线通信设备（WCD）中管理多个无线电调制解调器的同时操作的系统。 多重控制可以作为负责通过临时启用或禁用设备内的多个无线电调制解调器来调度无线通信的子系统被集成到WCD中。 多无线电控制系统可以包括多无线电控制器（MRC）和多个专用无线电接口。 无线电接口专用于向无线电调制解调器和/或从无线电调制解调器快速传送延迟敏感信息。 如果在操作期间发生改变，该信息可以由MRC请求，或者由多个无线电调制解调器中的一个或多个提供。

    Apparatus, and an associated method, for facilitating synchronization in a wireless mesh network
    58.
    发明授权
    Apparatus, and an associated method, for facilitating synchronization in a wireless mesh network 有权
    装置和相关联的方法，用于促进无线网状网络中的同步

    公开(公告)号：US07180915B2

    公开(公告)日：2007-02-20

    申请号：US10028344

    申请日：2001-12-21

    申请人： David A. Beyer ,  Jori Arrakoski ,  Mika Kasslin

    发明人： David A. Beyer ,  Jori Arrakoski ,  Mika Kasslin

    IPC分类号： H04J3/06

    CPC分类号： H04B7/2662 ,  H04J3/0667 ,  H04W4/18 ,  H04W40/248 ,  H04W56/00

    摘要： Apparatus, and associated method, by which to synchronize nodes in a wireless mesh network, such as a fixed broadband network or a moving ad-hoc mesh network. Time stamps are added to data packets at a reference node defined pursuant to a pseudo hierarchy. The data packets are communicated by the reference node to a receiving node. The time stamp information is extracted therefrom, to provide an indication of a time reference value from which the time stamp information is formed. Registers are maintained at the nodes with updated values of the timing information, used in time synchronization between the nodes of the mesh network.

    摘要翻译： 装置和相关联的方法，用于同步无线网状网络中的节点，例如固定宽带网络或移动自组织网状网络。 时间戳被添加到根据伪层次结构定义的参考节点处的数据分组。 数据分组由参考节点传送到接收节点。 从其中提取时间戳信息，以提供形成时间戳信息的时间参考值的指示。 寄存器在具有定时信息的更新值的节点处维护，用于网状网络的节点之间的时间同步。

    Synchronization and sampling frequency in an apparatus receiving OFDM modulated transmissions
    59.
    发明授权
    Synchronization and sampling frequency in an apparatus receiving OFDM modulated transmissions 失效
    接收OFDM调制传输的设备中的同步和采样频率

    公开(公告)号：US6125124A

    公开(公告)日：2000-09-26

    申请号：US931531

    申请日：1997-09-16

    申请人： Jari Junell ,  Mika Kasslin ,  Mikko Kokkonen

    发明人： Jari Junell ,  Mika Kasslin ,  Mikko Kokkonen

    IPC分类号： H04L25/02 ,  H04L27/26 ,  H04J11/00 ,  H04J1/00

    CPC分类号： H04L25/0216 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2695 ,  H04L27/2605

    摘要： An OFDM receiver determines (12; 27) the pulse response of a radio channel and locates (13; 14) its starting point, end point and the maximum and its value. The difference between the end point and the starting point gives the length of the pulse response. A guard interval time corresponding to the guard interval separating the OFDM symbols is set (17; 18) in the receiver in such a manner that it covers the most significant components of the pulse response. A slow and monotonous temporal shift of the pulse response between measurement rounds indicates an error in the sampling frequency. The error is corrected (23; 31) in such a manner that the pulse response shift is compensated for.

    摘要翻译： OFDM接收机确定（12; 27）无线电信道的脉冲响应，并定位（13; 14）其起始点，终点和最大值及其值。 终点和起始点之间的差值给出了脉冲响应的长度。 以分离OFDM符号的保护间隔的保护间隔时间在接收机中以覆盖脉冲响应的最重要分量的方式设置（17; 18）。 测量回合之间的脉冲响应的缓慢且单调的时间偏移表示采样频率中的误差。 校正误差（23; 31），使得补偿脉冲响应偏移。