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41 条记录 (耗时 0.018 秒)

    METHOD AND APPARATUS FOR BEAMFORMING IN A WIRELESS COMMUNICATION SYSTEM
    4.
    发明公开
    METHOD AND APPARATUS FOR BEAMFORMING IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    在无线通信系统中用于波束成形的方法和设备

    公开(公告)号：EP3203653A1

    公开(公告)日：2017-08-09

    申请号：EP17156928.8

    申请日：2000-08-31

    申请人： QUALCOMM Incorporated

    发明人： Jalali, Ahmad

    IPC分类号： H04B7/06

    CPC分类号： H04B7/0617 ,  H04B7/0632

    摘要： In a CDMA data communication system capable of variable rate transmission, utilization of beamforming techniques decreases the average interference caused by transmissions of a base station (104) to subscriber stations (112) in neighboring cells (124). Base stations (102, 104) utilize multiple transmit antennas (106, 108), each transmitting signals at controlled phases, to form transmit signal beams (110, 118, 122) corresponding to individual subscriber stations (112, 116, 114). Data and reference signals are transmitted along beams (110, 118, 122) that change according to fixed time slots and subslots in order to maximize carrier-to-interference ratios (C/I) measured at subscriber stations (112, 116, 114).

    摘要翻译： 在能够进行可变速率传输的CDMA数据通信系统中，波束成形技术的利用降低了由基站（104）向相邻小区（124）中的用户站（112）的传输引起的平均干扰。 基站（102,104）利用多个发射天线（106,108），每个发射天线以受控相位发射信号，以形成对应于各个用户站（112,116,114）的发射信号波束（110,118,122）。 数据和参考信号沿着根据固定时隙和子时隙变化的波束（110,118,122）发送，以便最大化在用户站（112,116,114）处测量的载波干扰比（C / I） 。

    Method and apparatus for beamforming in a wireless communication system
    5.
    发明公开
    Method and apparatus for beamforming in a wireless communication system 有权
    在无线通信系统中的方法和装置用于波束成形

    公开(公告)号：EP1816759A3

    公开(公告)日：2011-02-16

    申请号：EP07010284.3

    申请日：2000-08-31

    申请人： Qualcomm, Incorporated

    发明人： Jalali, Ahmad

    IPC分类号： H04B7/06

    CPC分类号： H04B7/0617 ,  H04B7/0632

    摘要： In a CDMA data communication system capable of variable rate transmission, utilization of beamforming techniques decreases the average interference caused by transmissions of a base station to subscriber stations in neighboring cells. Base stations utilize multiple transmit antennas, each transmitting signals at controlled phases, to form transmit signal beams corresponding to individual subscriber stations. Data and reference signals are transmitted along beams that change according to fixed time slots and subslots in order to maximize carrier-to-interference ratios (C/I) measured at subscriber stations.

    Wireless handoffs between multiple wireless networks
    8.
    发明公开
    Wireless handoffs between multiple wireless networks 审中-公开
    多个无线网络之间的无线切换

    公开(公告)号：EP2432282A3

    公开(公告)日：2017-08-16

    申请号：EP11176161.5

    申请日：2006-04-28

    申请人： Qualcomm Incorporated

    发明人： Jain, Nikhil ,  Agrawal, Avneesh ,  Jalali, Ahmad ,  Bergan, Charles A.

    IPC分类号： H04W36/14 ,  H04W80/00 ,  H04W84/04 ,  H04W88/06 ,  H04W92/02

    CPC分类号： H04W36/14 ,  H04W80/00 ,  H04W84/042 ,  H04W88/06 ,  H04W92/02

    摘要： Methods of communicating from a wireless communications device are described, the method comprising: supporting a call over a first network that uses a first access technology or a second network that uses a second access technology to a remote communications device; and handing off the call from the first network to the second network by establishing a connection to the second network to support the call with the remote communications device, conferencing the wireless communications device into the call over the second network, and terminating a connection to the first network that was previously supporting the call with the remote communications device, wherein the connection to the second network is established in response to signaling from a network entity supporting a connection between the wireless and remote communication devices over the first network; the signaling from the network entity configured by the network entity to request that the wireless communications device establish the connection;, wherein the handoff of the call from the first network to the second network is transparent to a user on the call.

    摘要翻译： 描述了从无线通信设备进行通信的方法，该方法包括：通过使用第一接入技术的第一网络或使用第二接入技术的第二网络向远程通信设备支持呼叫; 以及通过建立到第二网络的连接以将来自第一网络的呼叫切换到第二网络，以支持与远程通信设备的呼叫，通过第二网络将无线通信设备召入呼叫，以及终止到第二网络的连接 第一网络，其先前支持与远程通信设备的呼叫，其中到第二网络的连接是响应于来自支持第一网络上的无线和远程通信设备之间的连接的网络实体的信令而建立的; 来自由所述网络实体配置的所述网络实体的信令请求所述无线通信设备建立所述连接;其中，所述呼叫从所述第一网络切换到所述第二网络对于所述呼叫上的用户是透明的。

    A method and an apparatus for a quick retransmission of signals in a communication system
    9.
    发明公开
    A method and an apparatus for a quick retransmission of signals in a communication system 审中-公开
    在通信系统中快速重传信号的方法和设备

    公开(公告)号：EP2312786A3

    公开(公告)日：2013-03-27

    申请号：EP10177328.1

    申请日：2001-04-13

    申请人： QUALCOMM Incorporated

    发明人： Jalali, Ahmad ,  Esteves, Eduardo. A. S ,  Sindhushayana, Nagabhushana T. ,  Black, Peter. J ,  Atter, Rashid. A

    IPC分类号： H04L1/16 ,  H04L1/18

    CPC分类号： H04L1/1887 ,  H04L1/1692 ,  H04L1/1809 ,  H04L1/1848 ,  H04L1/1877 ,  H04L1/188

    摘要： A transmitting terminal, transmits signals in a form of packets to a receiving terminal, if the packet was intended for the receiving terminal, if so, the receiving terminal demodulates the packet. The receiving terminal then computes a quality metric of the packet, and compares the computed quality metric with a quality metric contained in the packet. If the quality metrics match, the packet is forwarded for further processing. If the quality metrics fail to match, the receiving terminal sends a request for retransmission of the packet. The transmitting terminal determines which packet needs to be retransmitted based on the request for retransmission. If delivery of the packet in accordance with the aforementioned description fails, retransmission in accordance with conventional sequence-number-based schemes, e.g., radio link protocol, is attempted.

    摘要翻译： 如果分组是打算送给接收终端的，则发送终端以分组的形式向接收终端发送信号，如果是的话，接收终端解调该分组。 接收终端然后计算分组的质量度量，并将计算出的质量度量与包含在分组中的质量度量进行比较。 如果质量指标匹配，则数据包将被转发以供进一步处理。 如果质量度量不匹配，则接收终端发送重传数据包的请求。 发送终端基于重传请求来确定哪个分组需要被重传。 如果根据上述描述传送分组失败，则尝试根据传统的基于序列号的方案（例如无线链路协议）进行重传。