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141 条记录 (耗时 0.028 秒)

    Design of In-Band Backhaul for Wireless Relays in Wireless Networks
    72.
    发明申请
    Design of In-Band Backhaul for Wireless Relays in Wireless Networks 有权
    无线网络无线中继带内回程设计

    公开(公告)号：US20100272006A1

    公开(公告)日：2010-10-28

    申请号：US12683291

    申请日：2010-01-06

    申请人： Pierre Bertrand ,  Zukang Shen ,  Eko N. Onggosanusi ,  Sandeep Bhadra ,  Anthony Ekpenyong ,  Tarik Muharemovic

    发明人： Pierre Bertrand ,  Zukang Shen ,  Eko N. Onggosanusi ,  Sandeep Bhadra ,  Anthony Ekpenyong ,  Tarik Muharemovic

    IPC分类号： H04J3/08

    CPC分类号： H04B7/2606

    摘要： This invention extends the coverage and improves the capacity of wireless communication networks using relay nodes. The relay nodes are wirelessly connected to the base station. The base station uses the same radio access technology for a link between the base station and user equipment and between the base station and the relay node. The relay node uses the same radio access technology for a link between the base station and the relay node and between the relay node and the user equipment. The relay node supports at least a Physical Layer (PHY), a Medium Access Control (MAC) sub-layer and a Radio Link Control (RLC) sub-layer protocol.

    摘要翻译： 本发明扩展了覆盖范围，并提高了使用中继节点的无线通信网络的容量。 中继节点与基站无线连接。 基站对基站和用户设备之间以及基站和中继节点之间的链路使用相同的无线电接入技术。 中继节点对于基站和中继节点之间以及中继节点和用户设备之间的链路使用相同的无线电接入技术。 中继节点至少支持物理层（PHY），媒体接入控制（MAC）子层和无线链路控制（RLC）子层协议。

    Orthogonal frequency division multiplexing access (OFDMA) ranging
    73.
    发明授权
    Orthogonal frequency division multiplexing access (OFDMA) ranging 有权
    正交频分复用接入（OFDMA）范围

    公开(公告)号：US07675888B2

    公开(公告)日：2010-03-09

    申请号：US11531586

    申请日：2006-09-13

    申请人： Cory S. Modlin ,  Tarik Muharemovic

    发明人： Cory S. Modlin ,  Tarik Muharemovic

    IPC分类号： H04B7/216 ,  H04W4/00 ,  H04B7/208 ,  H04J11/00

    CPC分类号： H04L5/023 ,  H04J3/0682

    摘要： A method for Orthogonal Frequency Division Multiplexing Access (OFDMA) ranging is provided. The method includes receiving a signal having OFDMA symbols. An FFT is performed on this signal. Matching ranging codes are found. The power for a given hypothesized ranging code is determined and compared to a power threshold to determine if the code was transmitted. The timing offset and power are reported as the result of ranging.

    摘要翻译： 提供了一种用于正交频分复用接入（OFDMA）测距的方法。 该方法包括接收具有OFDMA符号的信号。 对该信号执行FFT。 找到匹配的测距代码。 确定给定假设测距码的功率并将其与功率阈值进行比较，以确定代码是否被发送。 定时偏移和功率作为测距结果报告。

    Transmission Using Nested OFDMA
    74.
    发明申请
    Transmission Using Nested OFDMA 审中-公开
    使用嵌套OFDMA传输

    公开(公告)号：US20090040919A1

    公开(公告)日：2009-02-12

    申请号：US12185531

    申请日：2008-08-04

    申请人： Tarik Muharemovic ,  Zukang Shen ,  Jing Jiang

    发明人： Tarik Muharemovic ,  Zukang Shen ,  Jing Jiang

    IPC分类号： H04J11/00

    CPC分类号： H04L27/2602 ,  H04L5/0044 ,  H04L5/0048

    摘要： A transmission of information within a wireless cellular network may include a first and second group of samples. A first group of samples is created comprising at least a first and a last subgroup, wherein the last subgroup is same as the first subgroup. A second group of samples created. A transformed set of samples produced by jointly transforming the created first and second group with a discrete Fourier transform (DFT). The transformed set of samples is expanded to produce an expanded set, and the expanded set is transformed with an inverse discrete Fourier transform (IDFT) to produce an OFDM symbol with a fractional payload. The first group of samples is a reference signal (RS), which is known to the receiver before the transmission occurs, while the second group of samples is information data.

    摘要翻译： 无线蜂窝网络内的信息传输可以包括第一和第二组样本。 创建包括至少第一和最后一个子组的第一组样本，其中最后一个子组与第一个子组相同。 第二组样本创建。 通过用离散傅立叶变换（DFT）联合变换所创建的第一组和第二组而产生的经变换的样本组。 经变换的样本集合被扩展以产生扩展集合，并且利用逆离散傅里叶变换（IDFT）来变换扩展集合以产生具有小数有效载荷的OFDM符号。 第一组样本是参考信号（RS），其在传输发生之前是接收机已知的，而第二组样本是信息数据。

    Allocation of Block Spreading Sequences
    75.
    发明申请
    Allocation of Block Spreading Sequences 有权
    块传播序列的分配

    公开(公告)号：US20080298488A1

    公开(公告)日：2008-12-04

    申请号：US12129378

    申请日：2008-05-29

    申请人： Zukang Shen ,  Tarik Muharemovic ,  Pierre Bertrand

    发明人： Zukang Shen ,  Tarik Muharemovic ,  Pierre Bertrand

    IPC分类号： H04L27/28

    CPC分类号： H04W72/0406

    摘要： A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network is obtained using a first and a second sequence. Embodiments of the present invention mitigate interference by restricting the choice of the first sequence. Thus, in an embodiment of the invention, the first sequence is selected from a set of M sequences wherein M is strictly less than N. In order to accommodate high—velocity users, the restricted set contains a pair of sequences whose element—wise product is mirror symmetric. A transmission component for K-th logical time duration is obtained from the entire second sequence and K-th element of the first sequence.

    摘要翻译： 信息从次级到主节点的传输发生在多个N个逻辑时间段内。 使用第一和第二序列获得从无线网络中的次级到主节点的传输。 本发明的实施例通过限制第一序列的选择来减轻干扰。 因此，在本发明的一个实施例中，第一序列选自M个严格小于N的M序列集合。为了适应高速用户，受限集合包含一对序列，其元素乘积 是镜像对称的。 从第一序列的整个第二序列和第K个元素获得用于第K个逻辑持续时间的传输分量。

    Block Scrambling for Orthogonal Frequency Division Multiple Access
    77.
    发明申请
    Block Scrambling for Orthogonal Frequency Division Multiple Access 有权
    正交频分多址的块加扰

    公开(公告)号：US20080247477A1

    公开(公告)日：2008-10-09

    申请号：US12061878

    申请日：2008-04-03

    申请人： Zukang Shen ,  Tarik Muharemovic

    发明人： Zukang Shen ,  Tarik Muharemovic

    IPC分类号： H04L27/28

    CPC分类号： H04L5/0019

    摘要： A method of transmitting signals in a communication system over at least two time periods including generating a base signal comprising of at least two samples in each time period, selecting a scrambling sequence of length equal to or greater than the number of time periods, scaling all samples in said signal in a time period with one element of said scrambling sequence and transmitting the scaled signal in said time period. Different elements of the scrambling sequence are used to scale the base signal in different time periods. The signal in each time period is obtained by scaling a base signal. The scrambling sequence is preferably a pseudo-random sequence. The step of scaling all samples in said signal in a time period consists of multiplying all samples of said signal with an element of said scrambling sequence.

    摘要翻译： 一种在至少两个时间段内在通信系统中发送信号的方法，包括在每个时间周期内生成包括至少两个采样的基本信号，选择长度等于或大于时间周期数量的加扰序列， 在所述信号中采用所述加扰序列的一个元素在所述信号中采样，并在所述时间周期内发送经缩放的信号。 加扰序列的不同元素用于在不同时间段内缩放基本信号。 通过缩放基本信号来获得每个时间段中的信号。 扰频序列优选地是伪随机序列。 在一段时间内缩放所述信号中的所有采样的步骤包括将所述信号的所有样本与所述加扰序列的元素相乘。

    RANDOM ACCESS STRUCTURE FOR WIRELESS NETWORKS
    78.
    发明申请
    RANDOM ACCESS STRUCTURE FOR WIRELESS NETWORKS 有权
    无线网络的随机访问结构

    公开(公告)号：US20070230600A1

    公开(公告)日：2007-10-04

    申请号：US11691549

    申请日：2007-03-27

    申请人： Pierre Bertrand ,  Jing Jiang ,  Shantanu Kangude ,  Tarik Muharemovic

    发明人： Pierre Bertrand ,  Jing Jiang ,  Shantanu Kangude ,  Tarik Muharemovic

    IPC分类号： H04K1/10

    CPC分类号： H04W74/08 ,  H04J13/00 ,  H04J13/14 ,  H04L5/0044 ,  H04L5/006 ,  H04L27/2602 ,  H04W74/002 ,  H04W74/0833

    摘要： Apparatus and methods for accessing a wireless telecommunications network by transmitting a random access signal. The random access signal includes a random access preamble signal selected from a set of random access preamble signals constructed by cyclically shift selected root CAZAC sequences. The random access signal may be one or more transmission sub-frames in duration, the included random access preamble sequence's length being extended with the signal to provide improved signal detection performance in larger cells and in higher interference environments. The random access signal may include a wide-band pilot signal facilitating base station estimation of up-link frequency response in some situations. Each of the plurality of available random access preamble sequences may be assigned a unique information value. The base station may use the information encoded in the random access preamble to prioritize responses and resource allocations. Random access signal collisions are dealt with by a combination of preamble code space randomness and back-off procedures.

    摘要翻译： 通过发送随机接入信号来接入无线电信网络的装置和方法。 随机接入信号包括从由循环移位选择的根CAZAC序列构成的一组随机接入前同步信号中选择的随机接入前导信号。 随机接入信号可以是持续时间中的一个或多个传输子帧，所包含的随机接入前同步码序列的长度随信号扩展，以在较大的小区和较高的干扰环境中提供改善的信号检测性能。 随机接入信号可以包括宽带导频信号，有助于在某些情况下基站估计上行链路频率响应。 可以为多个可用随机接入前导码序列中的每一个分配唯一的信息值。 基站可以使用在随机接入前导码中编码的信息来优先处理响应和资源分配。 随机接入信号冲突由前导码空间随机性和退避程序的组合来处理。