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    Selective network switching in a wireless broadcast network
    9.
    发明授权
    Selective network switching in a wireless broadcast network 有权
    无线广播网络中的选择性网络切换

    公开(公告)号：US07948907B2

    公开(公告)日：2011-05-24

    申请号：US11343380

    申请日：2006-01-30

    申请人： Michael Mao Wang ,  Ashok Mantravadi ,  Murali Ramaswamy Chari

    发明人： Michael Mao Wang ,  Ashok Mantravadi ,  Murali Ramaswamy Chari

    IPC分类号： H04L12/26 ,  H04W4/00

    CPC分类号： H04B1/3805 ,  H04H20/26 ,  H04H40/18

    摘要： The disclosure is directed to a mobile communication device that may receive wireless broadcast signals from a number of different base stations or transmitters. As the location of the device moves relative to the transmitters, one transmitter will likely be identified as the transmitter broadcast the strongest, or highest quality, signal. When that determination is made, the user of the mobile device is presented the opportunity to switch to receiving that transmitters signal. Based on the user's reply, the device may remain with the current transmitter, even though it does not have the strongest signal, or the device may be configured to acquire and start receiving the new transmitter's signal. The measuring of the quality of a transmitter's signal may be based on a composite score that combines a number of individual measurements made over a predetermined period of time.

    摘要翻译： 本公开针对可从多个不同基站或发射机接收无线广播信号的移动通信设备。 随着设备的位置相对于发射机移动，一个发射机可能被识别为发射机广播最强或最高质量的信号。 当进行该确定时，向移动设备的用户呈现切换到接收该发射机信号的机会。 基于用户的答复，即使设备没有最强的信号，设备仍然可以保持当前的发射机，或者设备可能被配置为获取和开始接收新的发射机的信号。 发射机信号的质量的测量可以基于组合在预定时间段内进行的多个单独测量的综合得分。

    Wide area and local network ID transmission for communication systems
    10.
    发明授权
    Wide area and local network ID transmission for communication systems 有权
    通信系统的广域和本地网络ID传输

    公开(公告)号：US07852822B2

    公开(公告)日：2010-12-14

    申请号：US11021310

    申请日：2004-12-22

    申请人： Michael Mao Wang ,  Bojan Vrcelj ,  Krishna Kiran Mukkavilli ,  Raghuraman Krishnamoorthi ,  Rajiv Vijayan

    发明人： Michael Mao Wang ,  Bojan Vrcelj ,  Krishna Kiran Mukkavilli ,  Raghuraman Krishnamoorthi ,  Rajiv Vijayan

    IPC分类号： H04J1/00

    CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/0083 ,  H04L27/261

    摘要： The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and/or multiple OFDM symbols. The single symbol structure for transmitting the network IDs is independent of the number of network ID bits and minimizes frequency offset and Doppler effects. The multiple symbol structure allows a much coarser timing accuracy to be employed at the expense of transmitting additional symbols. Several embodiments employ a search function to find possible network ID candidates from a transmitted symbol and a selection function to find an optimum candidate from a network ID candidate list.

    摘要翻译： 这些实施例利用OFDM符号来传送网络ID。 ID被编码成使用网络ID作为种子的符号，以对通过利用符号进行发送的各个导频进行加扰。 导频可以被构造成单个OFDM符号和/或多个OFDM符号。 用于发送网络ID的单个符号结构与网络ID比特数无关，并且使频偏和多普勒效应最小化。 多符号结构允许以牺牲传输附加符号为代价采用更粗糙的定时精度。 几个实施例采用搜索功能来从发送的符号和选择功能中找到可能的网络ID候选，以从网络ID候选列表中找到最佳候选。