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    Virtual locating of a fixed subscriber unit to reduce re-acquisition time
    71.
    发明授权
    Virtual locating of a fixed subscriber unit to reduce re-acquisition time 有权
    虚拟定位固定用户单元以减少重新获取时间

    公开(公告)号：US06252866B1

    公开(公告)日：2001-06-26

    申请号：US09304286

    申请日：1999-05-03

    Applicant: John W. Haim

    Inventor： John W. Haim

    IPC: H04J1300

    CPC classification number: H04W52/60 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04W52/36 ,  H04W52/362 ,  H04W52/367 ,  H04W52/50

    Abstract: A novel system and method reduces the time required by a base station to re-acquire a fixed subscriber unit in a CDMA communication system by virtually locating of the subscriber units. A base station acquires subscriber units by searching only those code phases concomitant with the largest propagation delay possible in the cell, as if all subscriber units were located at the periphery of the cell. A subscriber unit which has never been acquired by the base station varies the delay between the PN code phase of its received and transmitted signals over the range of possible delays in a cell and slowly ramps-up its transmission power until it is acquired by the base station. Upon initial acquisition by the base station, the subscriber unit ceases ramping-up its transmission power, ceases varying the delay and internally stores the final value of the delay in memory. For subsequent re-acquisition, the subscriber unit adds the delay value between the PN code phase of its received and transmitted signals, making the subscriber virtually appear to be at the periphery of the cell. This permits a quick ramp-up of transmission power by the subscriber unit and reduced acquisition time by the base station.

    Abstract translation: 一种新颖的系统和方法通过虚拟地定位用户单元来减少基站在CDMA通信系统中重新获取固定用户单元所需的时间。 基站仅通过仅在那些小区中搜索可能的最大传播延迟的那些码相位来搜索那些码相位，好像所有的用户单元都位于小区的外围。 基站从未被采集的用户单元在单元中的可能延迟的范围内改变其接收和发送的信号的PN码相位之间的延迟，并缓慢地增大其发送功率，直到由基站 站。 在基站首次采集时，用户单元停止其发送功率的上升，停止改变延迟，并在内存中将延迟的最终值存储在存储器中。 为了随后的重新获取，用户单元在其接收和发送的信号的PN码相位之间添加延迟值，使得用户实际上看起来处于小区的外围。 这允许用户单元的发送功率的快速上升，并且由基站减少了获取时间。

    Randomized code acquisition
    72.
    发明授权
    Randomized code acquisition 失效
    随机代码采集

    公开(公告)号：US6069915A

    公开(公告)日：2000-05-30

    申请号：US895431

    申请日：1997-07-16

    Applicant: Anthony Peter Hulbert

    Inventor： Anthony Peter Hulbert

    IPC: H04B1/707 ,  A61F2/06 ,  H04L27/30

    CPC classification number: H04B1/7075 ,  H04B1/70755 ,  H04B1/709 ,  H04B2201/7071

    Abstract: A code acquisition circuit for acquiring code synchronization between an n-chip spreading code of a received spread spectrum radio signal and an n-chip local reference code generated by a code generator within a receiver, includes a variable delay means which operates to introduce a delay shift into the said received radio signal. A correlator operates to correlate n-chips of the local reference code with n-samples of the received signal communicated thereto, and generates a correlation signal representative of a result of the correlation. A code acquisition controller operates in combination with the correlation signal to maintain the delay shift for at least one correlation and thereafter to change the delay shift, wherein the delay shift is a fraction of one chip period.

    Abstract translation: 一种用于获取接收的扩频无线电信号的n码片扩展码与由接收机内的码发生器产生的n码片本地参考码之间的码同步的码获取电路，包括：可变延迟装置，用于引入延迟 移入所述接收到的无线电信号。 相关器操作以将本地参考码的n码与所传送的接收信号的n样本相关，并产生表示相关结果的相关信号。 代码获取控制器与相关信号相结合地操作，以维持至少一个相关的延迟移位，此后改变延迟移位，其中延迟偏移是一个码片周期的一小部分。

    HYBRID AUTOMATIC REPEAT REQUEST WITH FEEDBACK DEPENDENT BIT SELECTION
    80.
    发明申请
    HYBRID AUTOMATIC REPEAT REQUEST WITH FEEDBACK DEPENDENT BIT SELECTION 有权
    混合自动重复请求与反馈相关的位选择

    公开(公告)号：US20160353454A1

    公开(公告)日：2016-12-01

    申请号：US15233197

    申请日：2016-08-10

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Chunlong Bai ,  Bo Göransson

    IPC: H04W72/08 ,  H04L1/18 ,  H04L5/00

    CPC classification number: H04W72/082 ,  H04B1/7103 ,  H04B2201/7071 ,  H04B2201/709709 ,  H04L1/0026 ,  H04L1/0057 ,  H04L1/0068 ,  H04L1/1671 ,  H04L1/1819 ,  H04L1/1861 ,  H04L1/1864 ,  H04L1/1893 ,  H04L5/0053

    Abstract: A multi-bit HARQ feedback is transmitted by a receiver to a transmitter. The multi-bit feedback is a function of a level of convergence reached by a decoder when the previously transmitted coded data bits were decoded. The transmitter is configured to select a set of coded data bits for a retransmission as a function of the multi-bit feedback. In some embodiments, different redundancy versions of the coded data bits may be selected as a function of the multi-bit feedback. In other embodiments, a bit puncturing or bit repetition pattern may be selected as a function of the multi-bit feedback.

    Abstract translation: 多位HARQ反馈由接收机发送到发射机。 当先前发送的编码数据位被解码时，多比特反馈是解码器达到的收敛水平的函数。 发射器被配置为根据多位反馈来选择用于重传的一组编码数据位。 在一些实施例中，编码数据位的不同冗余版本可以被选择为多位反馈的函数。 在其他实施例中，可以选择位打孔或位重复模式作为多位反馈的函数。

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