METHOD AND APPARATUS FOR USE OF LICENSED SPECTRUM FOR CONTROL CHANNELS IN COGNITIVE RADIO COMMUNICATIONS
    31.
    发明申请
    METHOD AND APPARATUS FOR USE OF LICENSED SPECTRUM FOR CONTROL CHANNELS IN COGNITIVE RADIO COMMUNICATIONS 有权
    在认证无线电通信中使用许可光谱控制信道的方法和装置

    公开(公告)号:US20120039284A1

    公开(公告)日:2012-02-16

    申请号:US13210341

    申请日:2011-08-15

    IPC分类号: H04W72/04

    摘要: Techniques are provided for control signaling and channel selection in cognitive Long Term Evolution (LTE). In one example, there is provided a method, operable by a mobile entity, that involves receiving, on a licensed channel, broadcasted channel usage information regarding at least one unlicensed channel used by one or more network nodes. The method further involves: performing a cell search procedure based at least in part on the channel usage information to select a given network node among the one or more network nodes; determining at least one random access parameter to be used in establishing wireless communication with the given network node, the at least one random access parameter being associated with a characteristic of the user device and determining a preferred downlink channel.

    摘要翻译: 提供技术用于认知长期演进(LTE)中的控制信令和信道选择。 在一个示例中,提供了一种由移动实体操作的方法,其涉及在许可频道上接收关于由一个或多个网络节点使用的至少一个非许可信道的广播信道使用信息。 所述方法还包括:至少部分地基于所述信道使用信息来执行小区搜索过程,以选择所述一个或多个网络节点中的给定网络节点; 确定要用于建立与所述给定网络节点的无线通信中的至少一个随机接入参数,所述至少一个随机接入参数与所述用户设备的特性相关联并且确定优选下行链路信道。

    SUBFRAME-SPECIFIC SEARCH SPACE DESIGN FOR CROSS-SUBFRAME ASSIGNMENTS
    33.
    发明申请
    SUBFRAME-SPECIFIC SEARCH SPACE DESIGN FOR CROSS-SUBFRAME ASSIGNMENTS 审中-公开
    子帧特定搜索空间设计用于跨子帧分配

    公开(公告)号:US20110274060A1

    公开(公告)日:2011-11-10

    申请号:US13100119

    申请日:2011-05-03

    IPC分类号: H04W72/04

    摘要: In release 8 of the LTE standard (“Rel-8”), a control channel and its associated data channel for downlink may be found in the same subframe. However, decoding of the control channel may be difficult if there is strong interference from different cells (e.g., due to interference from strong/dominant interfering cells). Communication in a dominant interference scenario may be supported by performing inter-cell interference coordination (ICIC). For example, cells may partition subframes to avoid interference. For some embodiments, allocating resources for a downlink data channel on one subframe may come from a PDCCH on a different subframe, which can be referred to as a cross-subframe assignment. Certain aspects of the present disclosure provide subframe-specific search spaces that may be used when there is at least one cross-subframe assignment in a subframe.

    摘要翻译: 在LTE标准(“Rel-8”)的版本8中,可以在同一子帧中找到用于下行链路的控制信道及其相关联的数据信道。 然而,如果存在来自不同小区的强干扰(例如,由于来自强/优势干扰小区的干扰),则控制信道的解码可能是困难的。 可以通过执行小区间干扰协调(ICIC)来支持主要干扰场景中的通信。 例如,单元可以分割子帧以避免干扰。 对于一些实施例,在一个子帧上为下行链路数据信道分配资源可以来自不同子帧上的PDCCH,其可以被称为跨子帧分配。 本公开的某些方面提供了子帧专用的搜索空间,其可以在子帧中存在至少一个跨子帧分配时使用。

    EFFICIENT ZADOFF-CHU SEQUENCE GENERATION
    34.
    发明申请
    EFFICIENT ZADOFF-CHU SEQUENCE GENERATION 有权
    有效的ZADOFF-CHU序列生成

    公开(公告)号:US20110249548A1

    公开(公告)日:2011-10-13

    申请号:US12755998

    申请日:2010-04-07

    IPC分类号: H04J11/00 H04L27/28

    CPC分类号: H04J13/0059 H04J13/14

    摘要: Efficient apparatus and method for Zadoff-Chu (“Chu”) sequence generation avoids additional processing and hardware complexity of conventional quadratic generating formula followed by Discrete Fourier Transform (DFT) with a reference signal generator that produces both a Zadoff-Chu sequence and its DFT. In the wireless communication system (e.g., Long Term Evolution (LTE) system), Chu sequences are extensively used, especially in the uplink (UL). Because of the single carrier operating mode, transmitting a Chu sequence in principle involves a succession of generating that sequence, performing a DFT operation and then an IFFT operation. Assuming that the sequence length is N, the initial sequence generation requires 2N multiplications and the DFT requires more than N log 2(N) multiplications. Given the frequent processing of Chu sequences, this would represent a complexity burden. The invention makes it possible to perform the sequence generation and DFT steps without any multiplication operation, except for possibly calculating certain initial parameters.

    摘要翻译: 用于Zadoff-Chu(“Chu”)序列生成的高效装置和方法避免了传统二次生成公式的附加处理和硬件复杂性,随后是具有产生Zadoff-Chu序列及其DFT的参考信号发生器的离散傅里叶变换(DFT) 。 在无线通信系统(例如,长期演进(Long Term Evolution,LTE)系统)中,尤其在上行链路(UL)中广泛使用了Chu序列。 由于单载波操作模式,原则上发送Chu序列涉及一系列生成该序列,执行DFT操作,然后进行IFFT操作。 假设序列长度为N,则初始序列生成需要2N次乘法,并且DFT需要多于N个log 2(N)乘法。 鉴于Chu序列的频繁处理,这将代表一个复杂的负担。 除了可能计算某些初始参数之外,本发明使得可以执行没有任何乘法运算的序列生成和DFT步骤。

    CROSS-SUBFRAME CONTROL CHANNEL DESIGN
    35.
    发明申请
    CROSS-SUBFRAME CONTROL CHANNEL DESIGN 有权
    跨子帧控制信道设计

    公开(公告)号:US20110064037A1

    公开(公告)日:2011-03-17

    申请号:US12879731

    申请日:2010-09-10

    IPC分类号: H04W72/04

    摘要: Certain aspects of the disclosure relate to performing cross-subframe control channel signaling for wireless communications. A method may be provided for signaling downlink control channel resource allocations and/or physical control format indications in a subframe different from the subframe in which a downlink data transmission may be performed. In one aspect, the method may include transmitting PDCCH and/or PCFICH during a first subframe to allocate resources for a PDSCH during a second subframe and transmitting the PDSCH during the second subframe.

    摘要翻译: 本公开的某些方面涉及对无线通信执行跨子帧控制信道信令。 可以提供一种用于在与可以执行下行链路数据传输的子帧不同的子帧中发送下行链路控制信道资源分配和/或物理控制格式指示的方法。 一方面,该方法可以包括在第一子帧期间发送PDCCH和/或PCFICH,以在第二子帧期间为PDSCH分配资源,并在第二子帧期间发送PDSCH。

    SYSTEM AND METHOD FOR OVERLOAD INDICATION
    36.
    发明申请
    SYSTEM AND METHOD FOR OVERLOAD INDICATION 有权
    用于过载指示的系统和方法

    公开(公告)号:US20110039595A1

    公开(公告)日:2011-02-17

    申请号:US12846608

    申请日:2010-07-29

    IPC分类号: H04W52/04

    CPC分类号: H04W52/243 H04W52/343

    摘要: Devices and methods are provided for transmit power control in a wireless communication environment. In one embodiment, the method may involve measuring an interference amount over at least one of a sub-band and a full bandwidth. The method may involve assigning a level to the measured interference amount, the level comprising one of an overloaded level and an underloaded level. The method may involve encoding the level as an overload indicator, the overload indicator being conditioned on the sub-band such that the overload indicator includes enhanced layer symbols regarding the level of the measured interference amount. The method may involve conveying the overload indicator to at least one mobile device.

    摘要翻译: 提供了用于无线通信环境中的发射功率控制的装置和方法。 在一个实施例中,该方法可以涉及通过子带和全带宽中的至少一个来测量干扰量。 该方法可以包括将水平分配给所测量的干扰量,所述水平包括过载水平和欠载水平之一。 该方法可以包括将电平编码为过载指示符,过载指示器在子带上进行调节,使得过载指示符包括关于所测量的干扰量的电平的增强层符号。 该方法可以包括将过载指示器传送到至少一个移动设备。

    Method and apparatus for data and pilot structures supporting equalization
    37.
    发明授权
    Method and apparatus for data and pilot structures supporting equalization 有权
    支持均衡的数据和导频结构的方法和装置

    公开(公告)号:US07821917B2

    公开(公告)日:2010-10-26

    申请号:US12432245

    申请日:2009-04-29

    IPC分类号: H04J11/00

    摘要: Techniques for transmitting data in a manner to facilitate equalization at a receiver are described. Guard intervals are appended to data blocks such that each data block has a guard interval at the beginning of the data block and a guard interval at the end of the data block. Each guard interval may be discontinuous transmission (DTX), a polyphase sequence, or some other known sequence. Pilot is appended to each set of at least one data block. The data blocks, pilot, and guard intervals may be sent using various slot structures and are processed for transmission. The processing may include mapping the data blocks to at least one physical channel, channelizing the data blocks for each physical channel with a channelization code, combining all physical channels, and scrambling the combined data, pilot, and guard intervals with a scrambling code.

    摘要翻译: 描述了以便于在接收机处均衡的方式发送数据的技术。 保护间隔被附加到数据块,使得每个数据块在数据块的开始处具有保护间隔,并且在数据块的末尾具有保护间隔。 每个保护间隔可以是不连续传输(DTX),多相序列或一些其他已知序列。 导频被附加到每组至少一个数据块。 数据块,导频和保护间隔可以使用各种时隙结构发送,并被处理以进行传输。 该处理可以包括将数据块映射到至少一个物理信道,通过信道化码信道化每个物理信道的数据块,组合所有物理信道,以及用加扰码对组合的数据,导频和保护间隔进行加扰。

    METHOD AND APPARATUS FOR DATA AND PILOT STRUCTURES SUPPORTING EQUALIZATION
    38.
    发明申请
    METHOD AND APPARATUS FOR DATA AND PILOT STRUCTURES SUPPORTING EQUALIZATION 有权
    数据和引导结构的方法和装置支持均衡

    公开(公告)号:US20090323666A1

    公开(公告)日:2009-12-31

    申请号:US12432245

    申请日:2009-04-29

    IPC分类号: H04J3/04 H04J3/00

    摘要: Techniques for transmitting data in a manner to facilitate equalization at a receiver are described. Guard intervals are appended to data blocks such that each data block has a guard interval at the beginning of the data block and a guard interval at the end of the data block. Each guard interval may be discontinuous transmission (DTX), a polyphase sequence, or some other known sequence. Pilot is appended to each set of at least one data block. The data blocks, pilot, and guard intervals may be sent using various slot structures and are processed for transmission. The processing may include mapping the data blocks to at least one physical channel, channelizing the data blocks for each physical channel with a channelization code, combining all physical channels, and scrambling the combined data, pilot, and guard intervals with a scrambling code.

    摘要翻译: 描述了以便于在接收机处均衡的方式发送数据的技术。 保护间隔被附加到数据块,使得每个数据块在数据块的开始处具有保护间隔,并且在数据块的末尾具有保护间隔。 每个保护间隔可以是不连续传输(DTX),多相序列或一些其他已知序列。 导频被附加到每组至少一个数据块。 数据块,导频和保护间隔可以使用各种时隙结构发送,并被处理以进行传输。 该处理可以包括将数据块映射到至少一个物理信道,通过信道化码信道化每个物理信道的数据块,组合所有物理信道,以及用加扰码对组合的数据,导频和保护间隔进行加扰。

    CIRCULAR BUFFER BASED RATE MATCHING
    39.
    发明申请
    CIRCULAR BUFFER BASED RATE MATCHING 有权
    基于循环缓冲器的速率匹配

    公开(公告)号:US20090049359A1

    公开(公告)日:2009-02-19

    申请号:US12055195

    申请日:2008-03-25

    IPC分类号: H03M13/05 G06F11/10

    摘要: Systems and methodologies are described that facilitate employing circular buffer based rate matching. Encoded block(s) that include systematic, parity 1, and parity 2 bits can be generated using turbo code. Bit type can be identified to separate bits into distinct groups. Systematic bits can be interleaved together to generate a randomized sequence of systematic bits, parity 1 bits can be interleaved together to yield a randomized sequence of parity 1 bits, and parity 2 bits can be interleaved together to output a randomized sequence of parity 2 bits. The randomized sequences of parity 1 bits and parity 2 bits can be interlaced together in an alternating manner. The randomized sequence of systematic bits can be inserted into a circular buffer, and upon inserting the entire sequence, the interlaced parity bits can be inserted into the circular buffer (e.g., until reaching capacity). Bits inserted into the circular buffer are transmitted.

    摘要翻译: 描述了便于采用基于循环缓冲器的速率匹配的系统和方法。 可以使用turbo码生成包括系统,奇偶校验1和奇偶校验位2的编码块。 可以识别位类型以将位分成不同的组。 系统比特可以交织在一起以产生随机化的系统比特序列,奇偶校验1比特可以交织在一起以产生奇偶校验1比特的随机化序列,并且奇偶校验2比特可以交织在一起以输出奇偶校验2比特的随机序列。 奇偶校验1比特和奇偶校验2比特的随机序列可以以交替方式交织在一起。 系统比特的随机序列可以被插入到循环缓冲器中,并且在插入整个序列时,可将隔行扫描奇偶校验位插入到循环缓冲器中(例如直到达到容量)。 插入到循环缓冲器中的位被传送。