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    METHOD AND SYSTEM FOR BOOSTING TRANSMISSION SETTINGS BASED ON SIGNAL TO INTERFERENCE AND NOISE RATIO
    22.
    发明公开
    METHOD AND SYSTEM FOR BOOSTING TRANSMISSION SETTINGS BASED ON SIGNAL TO INTERFERENCE AND NOISE RATIO 审中-公开
    方法和系统基于信号传输设置的激活和干扰信号噪声比

    公开(公告)号：EP2951934A1

    公开(公告)日：2015-12-09

    申请号：EP14705436.5

    申请日：2014-01-27

    申请人： Qualcomm Incorporated

    发明人： DU, Shu ,  JIA, Zhanfeng ,  ZHANG, Ning ,  GAO, Qinghai

    IPC分类号： H04B7/04 ,  H04B7/06 ,  H04L1/00

    CPC分类号： H04W72/085 ,  H04B7/0452 ,  H04B7/0619 ,  H04B7/0689 ,  H04L1/0003 ,  H04L1/0006 ,  H04L1/0009 ,  Y02D50/10

    摘要： A method of performing transmission from an access point (AP) in a wireless communication system provides transmission setting adjustment after sounding. In this method, stations associated with the AP and having transmission data can be identified. Transmission to those stations can be performed using a predetermined transmission setting. For a first transmission after a sounding, the predetermined transmission setting can be boosted. For any transmission other than the first transmission after the sounding, a current or adjusted transmission setting can be used based on a detected PER during transmission. An adjusted transmission setting can be an MCS rate, a user-level (SU-BF, 2U-MIMO, or 3U-MIMO), or an aggregated MAC protocol data unit (AMPDU) aggregation level. A single transmission setting or a combination of settings can be used. The method can be used with any transmission setting(s), including those mapped from the Signal to Interference and Noise Ratio (SINR).

    METHOD AND APPARATUS FOR VIRTUAL PAIRING WITH A GROUP OF SEMI-CONNECTED DEVICES
    24.
    发明公开
    METHOD AND APPARATUS FOR VIRTUAL PAIRING WITH A GROUP OF SEMI-CONNECTED DEVICES 有权
    方法和设备虚拟配对半附属设备的组

    公开(公告)号：EP2719113A1

    公开(公告)日：2014-04-16

    申请号：EP11727604.8

    申请日：2011-06-10

    申请人： Qualcomm Incorporated

    发明人： JACOBSON, David, M. ,  XIAO, Lu ,  JULIAN, David, J. ,  JIA, Zhanfeng ,  BUESKER, Brian, M. ,  BICA, Vito, R. ,  TEAGUE, Edward, H.

    IPC分类号： H04L9/08

    CPC分类号： H04L9/0833 ,  H04L9/0844 ,  H04L9/3213 ,  H04L9/3297 ,  H04L2209/76 ,  H04L2209/80 ,  H04W12/04

    摘要： One feature provides a method for a client node to establish a session key with a group node by obtaining an epoch identity value associated with a current epoch, wherein obtaining the epoch identity value includes one of computing the epoch identity value based on a node real time or negotiating the epoch identity value with the group node, computing a restricted key using a shared secret key, the epoch identity value, and a group node identity associated with the group node, and executing a session key establishment protocol with the group node to derive the session key using the restricted key as a master key in the session key establishment protocol. The session key may be established between the group node and the client node even though communications between the group node and the central node is only intermittently available during the current epoch.

    摘要翻译： 一个特征提供一种用于在客户端节点通过获得与当前历元相关联历元身份值的，worin获得历元身份值包括基于节点实时计算所述历元身份值中的一个来建立与一组节点的会话密钥 或协商与所述群节点历元身份值，使用共享的秘密密钥，所述历元身份值，以及与该组节点相关联的群节点身份计算受限密钥，并执行会话密钥建立协议与组节点来导出 使用受限制的键如在会话密钥建立协议的主密钥的会话密钥。 会话密钥可以在组节点并且即使该组节点和中央节点之间的通信仅在当前历元期间间歇地提供的客户端节点之间建立。

    TWO-WAY RANGING WITH INTER-PULSE TRANSMISSION AND RECEPTION
    27.
    发明公开
    TWO-WAY RANGING WITH INTER-PULSE TRANSMISSION AND RECEPTION 审中-公开
    与发射和接收脉冲之间的双向的距离确定

    公开(公告)号：EP2329292A1

    公开(公告)日：2011-06-08

    申请号：EP09791755.3

    申请日：2009-08-20

    申请人： Qualcomm Incorporated

    发明人： EKBAL, Amal ,  JULIAN, David, Jonathan ,  JIA, Zhanfeng

    IPC分类号： G01S13/76

    CPC分类号： G01S13/765

    摘要： Relatively short turnaround times are provided in conjunction with two-way ranging to, for example, facilitate accurate ranging measurements when the relative clock drift between ranging nodes (e.g., devices) is relatively high. In some aspects, relatively short turnaround times are achieved through the use of a symmetric channel that is defined to enable concurrent transmission of ranging messages between nodes. For example, a symmetric channel may be established by configuring the nodes to receive one or more pulses associated with a received ranging message in between pulse transmissions associated with a transmitted ranging message. In this way, one node may send a ranging timestamp shortly after the other nodes sends its ranging timestamp, thereby mitigating the impact of the clock drift on the ranging measurements. In some aspects the pulses may comprise ultra-wideband pulses. The techniques described herein may be employed to provide two-way ranging in, for example, low power and/or non-coherent wireless devices.

    CHANNEL ACCESS SCHEME FOR ULTRA-WIDE BAND COMMUNICATION
    28.
    发明公开
    CHANNEL ACCESS SCHEME FOR ULTRA-WIDE BAND COMMUNICATION 审中-公开
    用于超宽带通信的通道访问方案

    公开(公告)号：EP2092658A2

    公开(公告)日：2009-08-26

    申请号：EP07869281.1

    申请日：2007-12-14

    申请人： QUALCOMM Incorporated

    发明人： JIA, Zhanfeng ,  EKBAL, Amal ,  JULIAN, David Jonathan ,  ULUPINAR, Fatih

    IPC分类号： H04B1/69

    CPC分类号： H04B1/7163 ,  H04B1/71632

    摘要： A channel access scheme is provided for a pulse-based ultra-wide band network. Here, concurrent ultra-wide band channels may be established through the use of a pulse division multiple access scheme. An access scheme may employ different states each of which may be associated with different channel parameter state information and/or different duty cycles. For example, a channel access scheme may employ an inactive state, an idle state, a connected state, and a streaming state. Multiple logical channels may be defined for a given ultra-wide band channel via, for example, pulse division multiplexing.

    INTER-PULSE DUTY CYCLING
    29.
    发明公开
    INTER-PULSE DUTY CYCLING 审中-公开
    ARBEITSZYKLUS ZWISCHEN IMPULSEN

    公开(公告)号：EP2020091A2

    公开(公告)日：2009-02-04

    申请号：EP07761399.0

    申请日：2007-04-26

    申请人： Qualcomm Incorporated

    发明人： JIA, Zhanfeng ,  LEE, Chong U. ,  EKBAL, Amal ,  JULIAN, David Jonathan

    IPC分类号： H04B1/69 ,  H04B1/16

    CPC分类号： H04B1/7174 ,  H04B1/71632 ,  H04R25/554 ,  H04R25/558 ,  H04R27/00 ,  H04R2225/33 ,  H04R2225/55 ,  H04R2227/003 ,  H04R2420/07

    摘要： Low power wireless communication techniques may be employed in devices that communicate via a wireless body area network, a wireless personal area network, or some other type of wireless communication link. In some implementations the devices may communicate via one or more impulse-based ultra-wideband channels. Inter-pulse duty cycling may be employed to reduce the power consumption of a device. Power may be provided for the transmissions and receptions of pulses by charging and discharging a capacitive element according to the inter-pulse duty cycling. Sub-packet data may be transmitted and received via a common frequency band. A cell phone may multicast to two or more peripherals via wireless communication links.

    摘要翻译： 低功率无线通信技术可以用于经由无线体区域网络，无线个人区域网络或某种其他类型的无线通信链路进行通信的设备中。 在一些实现中，设备可以经由一个或多个基于脉冲的超宽带信道进行通信。 可以采用脉冲间占空比来降低器件的功耗。 可以通过根据脉冲间负载循环对电容元件充电和放电来为脉冲的发射和接收提供功率。 可以经由公共频带发送和接收子分组数据。 蜂窝电话可以通过无线通信链路多播到两个或多个外围设备。