Method for setting cyclic shift considering frequency offset
    52.
    发明授权
    Method for setting cyclic shift considering frequency offset 有权
    考虑频率偏移设置循环移位的方法

    公开(公告)号:US08401113B2

    公开(公告)日:2013-03-19

    申请号:US13369172

    申请日:2012-02-08

    IPC分类号: H04L27/04

    摘要: A method for transmitting a random access preamble to a base station at a user equipment (UE) includes generating the random access preamble from a Zadoff-Chu sequence having a length ‘N’ and a root index ‘M’, wherein the random access preamble is defined by a cyclic shift of the Zadoff-Chu sequence and transmitting the generated random access preamble to the base station via a random access channel, wherein the cyclic shift is given by using a variable corresponding to a Doppler shift of one subcarrier spacing, the variable given by using the root index ‘M’, and wherein the cyclic shift is differently given based on whether the variable is smaller than ⅓ of the length ‘N’.

    摘要翻译: 一种用于在用户设备(UE)处向基站发送随机接入前导码的方法包括:从具有长度N和根索引M的Zadoff-Chu序列生成随机接入前同步码,其中随机接入前导码由 Zadoff-Chu序列的循环移位,并且经由随机接入信道将生成的随机接入前导码发送到基站,其中通过使用与一个子载波间隔的多普勒频移相对应的变量来给出循环移位,该变量由使用 根指数M,并且其中循环移位根据变量是否小于长度N的1/3来不同地给出。

    Method of controlling uplink power in wireless communication system
    53.
    发明授权
    Method of controlling uplink power in wireless communication system 有权
    无线通信系统中控制上行功率的方法

    公开(公告)号:US08359059B2

    公开(公告)日:2013-01-22

    申请号:US13002648

    申请日:2009-07-08

    IPC分类号: H04B7/00

    摘要: A method of controlling uplink power in a wireless communication system includes receiving a power control message including parameters for uplink power control from a base station, and controlling uplink power based on the power control message, wherein the uplink power is determined according to a target SINR (Signal to Interference plus Noise Ratio), the target SINR is determined by a minimum rate SINR required at the base station and a control factor for noise and interference. Transmission power of signal can be more accurately controlled and an influence of an inter-cell interference or a path loss can be reduced to thus improve quality of service of the wireless communication system.

    摘要翻译: 一种在无线通信系统中控制上行链路功率的方法包括从基站接收包括用于上行链路功率控制的参数的功率控制消息,并且基于功率控制消息来控制上行链路功率,其中根据目标SINR确定上行链路功率 (信号到干扰加噪声比),目标SINR由基站所需的最小速率SINR和噪声和干扰的控制因子确定。 可以更精确地控制信号的传输功率,并且可以减小小区间干扰或路径损耗的影响,从而提高无线通信系统的服务质量。

    Method for generating a reference signal sequence using grouping
    55.
    发明授权
    Method for generating a reference signal sequence using grouping 有权
    使用分组生成参考信号序列的方法

    公开(公告)号:US08290021B2

    公开(公告)日:2012-10-16

    申请号:US13341390

    申请日:2011-12-30

    IPC分类号: H04B1/707

    摘要: A method for a base station to receive a reference signal sequence from one or more devices within a cell of the base station in a multiple cell environment includes providing the one or more devices with information about the reference signal sequence, wherein the reference signal sequence is defined by a cyclic shift of a sequence within a sequence group identified by a group index (u), wherein the group index (u) is defined according to the cell in the multiple cell environment, wherein the sequence is given by a cyclic extension of a Zadoff Chu (ZC) sequence having an index (q) and a length (NZCRS), and wherein the index (q) is given by using the group index (u) and the length (NZCRS), and receiving the reference signal sequence from one or more of the one or more devices.

    摘要翻译: 一种用于基站在多小区环境中从所述基站的小区内的一个或多个设备接收参考信号序列的方法包括向所述一个或多个设备提供关于所述参考信号序列的信息,其中所述参考信号序列是 通过由组索引(u)标识的序列组内的序列的循环移位定义,其中所述组索引(u)根据所述多小区环境中的小区来定义,其中所述序列由 具有索引(q)和长度(NZCRS)的Zadoff Chu(ZC)序列,并且其中通过使用组索引(u)和长度(NZCRS)给出索引(q),并且接收参考信号序列 来自所述一个或多个设备中的一个或多个。

    METHOD FOR SETTING CYCLIC SHIFT CONSIDERING FREQUENCY OFFSET
    56.
    发明申请
    METHOD FOR SETTING CYCLIC SHIFT CONSIDERING FREQUENCY OFFSET 有权
    设定考虑频率偏移的循环移位的方法

    公开(公告)号:US20120051458A1

    公开(公告)日:2012-03-01

    申请号:US13284823

    申请日:2011-10-28

    IPC分类号: H04L25/03

    摘要: A method for a user equipment to transmit a random access preamble sequence to a base station includes transmitting the random access preamble sequence generated from a Constant Amplitude Zero Auto Correlation (CAZAC) sequence to the base station, wherein the CAZAC sequence is cyclic shifted according to one of applicable cyclic shift values defined considering a value (M) representing a Doppler shift of one subcarrier spacing and a cyclic shift unit length (T), and wherein when the value (M) meets a condition of ‘P*T≦M

    摘要翻译: 一种用于将用户设备向基站发送随机接入前同步码序列的方法,包括:将从恒定幅度零自动相关(CAZAC)序列生成的随机接入前同步码序列发射到所述基站,其中,所述CAZAC序列根据 考虑表示一个子载波间隔的多普勒频移的值(M)和循环移位单位长度(T)而定义的适用循环移位值之一,并且其中当所述值(M)满足条件“P * T& (P + 1)* T'其中(P)是整数,可应用的循环移位值之中的一个或多个相邻循环移位值被定义为组,并且该组内的相邻循环移位值的数目等于(P )。

    METHOD FOR SETTING CYCLIC SHIFT CONSIDERING FREQUENCY OFFSET
    57.
    发明申请
    METHOD FOR SETTING CYCLIC SHIFT CONSIDERING FREQUENCY OFFSET 有权
    设定考虑频率偏移的循环移位的方法

    公开(公告)号:US20120045011A1

    公开(公告)日:2012-02-23

    申请号:US13286147

    申请日:2011-10-31

    IPC分类号: H04B15/00

    摘要: A method for establishing a cyclic shift sequence to provide against the frequency offset is disclosed. The method calculates a distance between a channel response position of the sequence and an alias channel response position caused by a frequency offset, calculates the number of cyclic shifts per group according to the calculated distance, and establishes the cyclic shift (CS)-applying interval. This method easily establishes a cyclic shift (CS) interval at a specific location having no overlapping by considering a channel response of a reception (Rx) sequence and an alias location of this reception (Rx) sequence, although a reception (Rx) signal is shifted by a channel delay spreading or a propagation delay irrespective of categories of a domain generating a sequence, so that it can greatly reduce the number of the detection errors and the false alarm rate. And, if a sequence of the cyclic shift (CS) is allocated to a cell having a frequency offset of more than a predetermined level, the present invention can minimize the influence of a frequency offset on a high-mobility cell.

    摘要翻译: 公开了一种建立循环移位序列以提供抵消频偏的方法。 该方法计算序列的信道响应位置与由频率偏移引起的别名信道响应位置之间的距离,根据计算出的距离计算每组的循环移位数,并建立循环移位(CS)应用间隔 。 这种方法通过考虑接收(Rx)序列的信道响应和该接收(Rx)序列的别名位置而容易地在没有重叠的特定位置建立循环移位(CS)间隔,尽管接收(Rx)信号是 移动了信道延迟扩展或传播延迟,而与生成序列的域的类别无关,从而可以大大减少检测误差和误报率。 并且,如果将循环移位(CS)的序列分配给具有大于预定电平的频率偏移的小区,则本发明可以最小化频率偏移对高移动性小区的影响。