METHOD FOR ARQ-ENABLED PRE-TRANSMISSIONS IN MULTICAST AND BROADCAST SERVICES OF RELAY NETWORKS UTILIZING THE IDLE PERIODS
    71.
    发明申请
    METHOD FOR ARQ-ENABLED PRE-TRANSMISSIONS IN MULTICAST AND BROADCAST SERVICES OF RELAY NETWORKS UTILIZING THE IDLE PERIODS 有权
    使用空闲周期的继电网多媒体和广播业务中的ARQ启用预传输方法

    公开(公告)号:US20090086666A1

    公开(公告)日:2009-04-02

    申请号:US12211611

    申请日:2008-09-16

    IPC分类号: H04W4/00

    摘要: A method and apparatus is disclosed herein for transmitting data in a network (e.g., a relay network). In one embodiment, the method comprises performing pre-transmission of a packet to hops to enable the base station and the plurality of hops to transmit the packet synchronously to one or more mobile stations in the wireless communication system; and performing one or more re-transmissions of the packet at a first set of one or more hops in the system during a delay due to pre-transmissions at a second set of one or more hops in the system.

    摘要翻译: 本文公开的用于在网络(例如,中继网络)中传输数据的方法和装置。 在一个实施例中,所述方法包括执行分组的预传输以使所述基站和所述多个跳跃能够同步地传送所述分组到所述无线通信系统中的一个或多个移动台; 以及由于在系统中的一个或多个跳的第二组处的预发送而在延迟期间在系统中的一个或多个跳的第一组处执行所述分组的一个或多个重新发送。

    METHOD FOR AN IMPROVED LINEAR LEAST SQUARES ESTIMATION OF A MOBILE TERMINAL'S LOCATION UNDER LOS AND NLOS CONDITIONS AND USING MAP INFORMATION
    72.
    发明申请
    METHOD FOR AN IMPROVED LINEAR LEAST SQUARES ESTIMATION OF A MOBILE TERMINAL'S LOCATION UNDER LOS AND NLOS CONDITIONS AND USING MAP INFORMATION 有权
    改进的线性最小二乘法在LOS和NLOS条件下使用移动终端位置的方法和使用地图信息的方法

    公开(公告)号:US20090069029A1

    公开(公告)日:2009-03-12

    申请号:US12202611

    申请日:2008-09-02

    IPC分类号: H04Q7/20

    CPC分类号: H04W64/00 G01S5/0215 G01S5/14

    摘要: A linear least squares (LLS) estimator provides a low complexity estimation of the location of a mobile terminal (MT), using one of the fixed terminals (FTs) as a reference FT to derive a linear model. A method for selecting a reference FT is disclosed, which improves the location accuracy relative to an arbitrary approach to selecting the reference FT. In addition, a covariance-matrix based LLS estimator is proposed in line-of-sight (LOS) and non-LOS (NLOS) environments to further provide accuracy, taking advantage of the correlation of the observations. Different techniques for selecting the reference FT under non-LOS (NLOS) conditions are disclosed. A map-based two-stage LLS estimator assists in selecting the reference FT under NLOS conditions.

    摘要翻译: 线性最小二乘法(LLS)估计器使用固定终端(FT)中的一个作为参考FT提供对移动终端(MT)的位置的低复杂度估计,以导出线性模型。 公开了一种用于选择参考FT的方法,其相对于选择参考FT的任意方法提高了位置精度。 此外,在视距(LOS)和非LOS(NLOS)环境中提出了基于协方差矩阵的LLS估计器,以进一步提供准确性,利用观测的相关性。 公开了在非LOS(NLOS)条件下选择参考FT的不同技术。 基于地图的两级LLS估计器有助于在NLOS条件下选择参考FT。

    Method and System for a Reliable Relay-Associated and Opportunistic Cooperative Transmission Schemes
    73.
    发明申请
    Method and System for a Reliable Relay-Associated and Opportunistic Cooperative Transmission Schemes 有权
    可靠的中继相关和机会合作传输方案的方法和系统

    公开(公告)号:US20090005104A1

    公开(公告)日:2009-01-01

    申请号:US12130807

    申请日:2008-05-30

    IPC分类号: H04Q7/00

    CPC分类号: H04B7/026 H04B7/15592

    摘要: A base station (BS) communicates with a mobile station (MS) through relay stations (RSs). In one exemplary reliable relay-associated transmission scheme, the BS transmits data to the RSs using multicast or unicast. From the received packets, each RS calculates its reliability value according to a reliability function, which it informs the MS. The BS then generates a reliability metric to identify the RSs that are considered reliable. The reliable RSs transmit their information to the MS under a cooperative multicast transmission mode. Meanwhile, the unreliable RSs overhear the transmissions between the reliable RSs and the target MS. If the MS is unable to receive information from reliable RSs, the unreliable RSs can join the cooperative transmission to provide a higher cooperative diversity gain to the target MS.

    摘要翻译: 基站(BS)通过中继站(RS)与移动台(MS)进行通信。 在一个示例性的可靠的中继相关传输方案中,BS使用多播或单播向RS发送数据。 根据接收到的报文,每个RS根据可​​靠性函数计算其可靠性值,并通知MS。 然后,BS产生可靠性度量以识别被认为是可靠的RS。 可靠的RS在合作的组播传输模式下将其信息发送给MS。 同时,不可靠的RS会听到可靠的RS和目标MS之间的传输。 如果MS不能从可靠的RS接收信息,则不可靠的RS可以加入协作传输以向目标MS提供更高的协作分集增益。

    METHOD AND SYSTEM FOR JOINT TIME-OF-ARRIVAL AND AMPLITUDE ESTIMATION BASED ON A SUPER-RESOLUTION TECHNIQUE
    74.
    发明申请
    METHOD AND SYSTEM FOR JOINT TIME-OF-ARRIVAL AND AMPLITUDE ESTIMATION BASED ON A SUPER-RESOLUTION TECHNIQUE 有权
    基于超分辨率技术的接合时间和幅度估计的方法和系统

    公开(公告)号:US20080267304A1

    公开(公告)日:2008-10-30

    申请号:US12106188

    申请日:2008-04-18

    IPC分类号: H04L27/28

    摘要: In a geolocation application, a method is provided to jointly estimate the time-of-arrival (TOA) and the amplitude of a received signal based on super-resolution technique. The super-resolution joint TOA-amplitude estimators are provided based on either the expectation-maximization (EM), parallel-interference-cancellation space-alternating generalized expectation maximization (PIC-SAGE) or serial-interference-cancellation SAGE (SIC-SAGE). The SIC-SAGE estimator minimizes the ranging estimation error especially under a non-line-of-sight (NLOS) condition. The SIC-SAGE estimator is a simplified version of the maximum likelihood estimator with more stable performance in a multipath rich environment, such as the ultra-wideband (UWB) based applications. These techniques provide the following benefits: 1) it is generic, so that signal processing can be deployed on both time-domain (e.g., UWB impulse-radio) and frequency-domain (e.g., multi-band orthogonal frequency-division multiplexing (MB-OFDM)) based transceiver schemes and applicable for both UWB and non-UWB systems; 2) it is robust especially under NLOS condition and multipath rich environment.

    摘要翻译: 在地理位置应用中,提供了一种基于超分辨率技术共同估计接收信号的时间(TOA)和接收信号幅度的方法。 基于期望最大化(EM),并行干扰消除空间交替广义期望最大化(PIC-SAGE)或串行干扰消除SAGE(SIC-SAGE)提供超分辨率联合TOA幅度估计器, 。 SIC-SAGE估计器最小化了测距估计误差,特别是在非视距(NLOS)条件下。 SIC-SAGE估计器是最大似然估计器的简化版本,在富路由多环境中具有更稳定的性能,例如基于超宽带(UWB)的应用。 这些技术提供以下优点:1)它是通用的,使得信号处理可以在时域(例如,UWB脉冲无线电)和频域上部署(例如,多频带正交频分复用(MB -OFDM))收发器方案,适用于UWB和非UWB系统; 2)特别是在NLOS条件和多路径丰富的环境下,它是强大的。

    METHOD FOR OPTIMUM THRESHOLD SELECTION OF TIME-OF-ARRIVAL ESTIMATORS
    75.
    发明申请
    METHOD FOR OPTIMUM THRESHOLD SELECTION OF TIME-OF-ARRIVAL ESTIMATORS 审中-公开
    最佳阈值选择时间估计器的方法

    公开(公告)号:US20080130794A1

    公开(公告)日:2008-06-05

    申请号:US11949152

    申请日:2007-12-03

    IPC分类号: H04L25/06

    CPC分类号: G01S5/0221 H04W64/006

    摘要: The following invention relates to geolocation technology. In particular, the proposed method can be used to determine the optimum threshold value that minimizes the estimation error. The proposed method also allows the threshold value to be varied adaptively according to the signal-to-noise ratios (SNRs) under consideration. This is to ensure that the optimum threshold value is being selected under all channel conditions i.e., both line-of-sight (LOS) and non-LOS (NLOS) scenarios. Additionally, the proposed method is generic and system independent in which it can be applied to both coherent (e.g., match filter (MF)) and non-coherent receivers (e.g., energy detector (ED)).

    摘要翻译: 以下发明涉及地理定位技术。 特别地,所提出的方法可以用于确定最小化估计误差的最佳阈值。 所提出的方法还允许根据所考虑的信噪比(SNR)自适应地改变阈值。 这是为了确保在所有信道条件即视线(LOS)和非LOS(NLOS)场景下选择最佳阈值。 此外,所提出的方法是通用和系统无关的,其中它可以应用于相干(例如,匹配滤波器(MF))和非相干接收机(例如,能量检测器(ED))。

    Using subnet relations for paging, authentication, association and to activate network interfaces in heterogeneous access networks
    76.
    发明授权
    Using subnet relations for paging, authentication, association and to activate network interfaces in heterogeneous access networks 失效
    使用子网关系进行寻呼,认证,关联和激活异构接入网络中的网络接口

    公开(公告)号:US07366524B2

    公开(公告)日:2008-04-29

    申请号:US10119558

    申请日:2002-04-10

    IPC分类号: H04B7/20 H04Q7/00

    摘要: A system and method for using subnet relations to determine paging areas, for performing authentication and association, and to activate access network interfaces in wireless communication devices in a heterogeneous access network. Paging areas are generated using subnet relations by determining mobility agent servers within a predetermined number of subnet relations from a last active mobility agent server. Authentication and association are also accomplished using subnet relations. Access network interfaces can also be turned on and off based on subnet relations thereby conserving battery power.

    摘要翻译: 一种用于使用子网关系来确定寻呼区域,用于执行认证和关联以及激活异构接入网络中的无线通信设备中的接入网络接口的系统和方法。 通过确定来自最后一个主动移动代理服务器的预定数目的子网关系内的移动代理服务器,使用子网关系生成寻呼区域。 认证和关联也使用子网关系完成。 访问网络接口也可以根据子网关系打开和关闭,从而节省电池电量。

    Method and apparatus for dormant mode support with paging
    77.
    发明申请
    Method and apparatus for dormant mode support with paging 失效
    用寻呼方式支持休眠模式的方法和装置

    公开(公告)号:US20070233863A1

    公开(公告)日:2007-10-04

    申请号:US11807025

    申请日:2007-05-24

    IPC分类号: G06F15/173

    摘要: Apparatuses and methods are disclosed herein for implementing dormant mode with paging in a WLAN. Power savings in the computing device and reduction in traffic across the network are achieved by requiring a computing device to inform the WLAN of its location only when it crosses a paging area boundary or is to receive IP traffic. Dormant mode with paging is implemented in a protocol that supports dormant functionality and paging functionality but does not itself provide methods or standards for implementing such functionality, such as the IEEE 802.11. The methods and apparatuses disclosed herein provide the methods needed to implement dormant mode with paging in such a protocol. Generally, the methods and apparatuses for implementing dormant mode with paging basically include (1) establishing paging areas; (2) communicating access group information to a computing device; and (3) locating a computing device.

    摘要翻译: 本文公开了用于在WLAN中实现具有寻呼的休眠模式的装置和方法。 通过要求计算设备仅在其跨越寻呼区域边界或者要接收IP流量时才通知WLAN其位置来实现计算设备中的功率节省和网络上的流量减少。 具有寻呼的休眠模式在支持休眠功能和寻呼功能的协议中实现,但本身不提供用于实现这种功能的方法或标准,例如IEEE 802.11。 这里公开的方法和装置提供了在这种协议中实现具有寻呼的休眠模式所需的方法。 通常,用于实现寻呼的休眠模式的方法和装置基本上包括(1)建立寻呼区域; (2)将访问组信息传送到计算设备; 和(3)定位计算设备。

    METHOD AND APPARATUS FOR OPTIMAL ATIM SIZE SETUP FOR 802.11 NETWORKS IN AN AD HOC MODE
    78.
    发明申请
    METHOD AND APPARATUS FOR OPTIMAL ATIM SIZE SETUP FOR 802.11 NETWORKS IN AN AD HOC MODE 审中-公开
    用于802.11网络的最佳模式大小设置的方法和装置

    公开(公告)号:US20070133448A1

    公开(公告)日:2007-06-14

    申请号:US11564138

    申请日:2006-11-28

    IPC分类号: G08C17/00

    摘要: A method for power saving in an ad hoc wireless computer network determines an optimal ATIM message exchange window. The method (a) determines an effective number of nodes that participate in exchanges of ATIM messages during an ATIM window; (b) using the effective number of nodes, calculating a length for a data frame transmission window; and (c) calculates a length for the ATIM window using the calculated data frame transmission window. In one instance, the method determines the effective number of nodes based on the number of senders of ATIM messages. In another instance, the effective number of nodes is determined based on both senders and recipients of the ATIM messages. The method may determine the effective number of nodes from a number of successful ATIM message transmissions in a given time period. The calculated ATIM window size can be provided as an initial value to other methods that dynamically adjust the ATIM window size.

    摘要翻译: 在自组织无线计算机网络中节电的方法确定最佳ATIM消息交换窗口。 方法(a)确定在ATIM窗口期间参与ATIM消息交换的节点的有效数量; (b)使用有效数量的节点,计算数据帧传输窗口的长度; 和(c)使用所计算的数据帧传输窗口计算ATIM窗口的长度。 在一种情况下,该方法基于ATIM消息的发送者的数量来确定节点的有效数量。 在另一种情况下,基于ATIM消息的发送者和收件人来确定有效数量的节点。 该方法可以在给定时间段内从多个成功的ATIM消息传输确定节点的有效数量。 计算的ATIM窗口大小可以作为初始值提供给动态调整ATIM窗口大小的其他方法。

    Method and apparatus for power saving in beacon generation of wireless networks in ad hoc mode
    79.
    发明申请
    Method and apparatus for power saving in beacon generation of wireless networks in ad hoc mode 审中-公开
    在自组织模式下无线网络信标生成节能的方法和装置

    公开(公告)号:US20060285528A1

    公开(公告)日:2006-12-21

    申请号:US11454265

    申请日:2006-06-16

    IPC分类号: H04Q7/24

    摘要: Methods are disclosed to support power saving states of a beacon station in an ad hoc wireless local area network (WLAN). Some of the methods allow exchanging power management information among stations in the wireless network and to allow beacon station handovers. In some methods, always-on stations are given a higher priority to become a beacon station or a beacon station handover destination. The methods achieve good power saving while minimizing beacon handover frequency.

    摘要翻译: 公开了用于支持自组织无线局域网(WLAN)中的信标站的节电状态的方法。 一些方法允许在无线网络中的站之间交换功率管理信息,并允许信标站切换。 在一些方法中,给予始终在线站更高的优先级以成为信标站或信标站切换目的地。 该方法在最小化信标切换频率的同时实现良好的省电。