METHOD AND APPARATUS FOR DATA AND PILOT STRUCTURES SUPPORTING EQUALIZATION
    41.
    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
    42.
    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。

    System and method for single carrier optimization for evolved multimedia broadcast multicast service
    44.
    发明授权
    System and method for single carrier optimization for evolved multimedia broadcast multicast service 有权
    用于演进多媒体广播多播服务的单载波优化的系统和方法

    公开(公告)号:US09160592B2

    公开(公告)日:2015-10-13

    申请号:US13401540

    申请日:2012-02-21

    IPC分类号: H04H20/71 H04L27/26 H04L5/00

    摘要: Techniques are provided for single carrier optimization. For example, there is provided a method that involves, in a subframe of a radio spectrum, allocating a first set of resource elements (REs) for multimedia broadcast over a single frequency network (MBSFN) transmissions, each symbol corresponding to each RE of the first set having a first cyclic prefix (CP) type. The method may involve allocating a second set of REs for unicast transmissions, each symbol corresponding to each RE of second set having a second CP type. The method may involve determining whether the first CP type and the second CP type are the same. The method may involve, in response to the first CP type and the second CP type being the same, combining the MBSFN transmissions and the unicast transmissions in the subframe according to the allocated first and second sets of REs.

    摘要翻译: 为单载波优化提供了技术。 例如,提供了一种方法,其涉及在无线电频谱的子帧中,通过单个频率网络(MBSFN)传输分配用于多媒体广播的第一组资源元素(RE),每个符号对应于每个RE的每个RE 第一集合具有第一循环前缀(CP)类型。 该方法可以包括分配用于单播传输的第二组RE,每个符号对应于具有第二CP类型的第二组的每个RE。 该方法可以包括确定第一CP类型和第二CP类型是否相同。 该方法可以响应于第一CP类型和第二CP类型相同,根据所分配的第一和第二组RE来组合MBSFN传输和子帧中的单播传输。

    Bundled frequency division multiplexing structure in wireless communications
    45.
    发明授权
    Bundled frequency division multiplexing structure in wireless communications 有权
    无线通信中捆绑的频分复用结构

    公开(公告)号:US08855064B2

    公开(公告)日:2014-10-07

    申请号:US13004614

    申请日:2011-01-11

    IPC分类号: H04W4/00 H04W72/04 H04L5/00

    摘要: Methods and apparatuses are provided that facilitate allocating a portion of a resource block to a power-limited device for communicating therewith. The power-limited device may not be capable of transmitting over an entire resource block due to power limitations; thus, a portion of the resource block can be assigned thereto, allowing for allocating at least a different portion of the resource block to at least one different device to optimize communications over the resource block. In addition, the portion of the resource block can be allocated across one or more bundled time transmit intervals (TTI) to allow for effective communication of time-sensitive data, such as voice over internet protocol (VoIP).

    摘要翻译: 提供的方法和装置有助于将资源块的一部分分配给功率受限设备以与之通信。 由于功率限制,功率受限设备可能不能在整个资源块上传输; 因此,资源块的一部分可以被分配给它,允许将资源块的至少不同部分分配给至少一个不同的设备以优化资源块上的通信。 此外,可以通过一个或多个捆绑的时间发送间隔(TTI)来分配资源块的部分,以允许诸如网络协议(VoIP)之类的时间敏感数据的有效通信。

    Efficient zadoff-chu sequence generation
    47.
    发明授权
    Efficient zadoff-chu sequence generation 有权
    高效的zadoff-chu序列生成

    公开(公告)号:US08374072B2

    公开(公告)日:2013-02-12

    申请号:US12755998

    申请日:2010-04-07

    IPC分类号: H04J11/00 H04W4/00

    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常规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。

    CARRIER AGGREGATION FOR EVOLVED MULTIMEDIA BROADCAST MULTICAST SERVICE ENHANCEMENT
    48.
    发明申请
    CARRIER AGGREGATION FOR EVOLVED MULTIMEDIA BROADCAST MULTICAST SERVICE ENHANCEMENT 有权
    促进多媒体广播组播服务增强的载体聚合

    公开(公告)号:US20120213130A1

    公开(公告)日:2012-08-23

    申请号:US13402845

    申请日:2012-02-22

    摘要: Carrier aggregation to enhance Evolved Multimedia Broadcast Multicast Service (eMBMS) includes transmitting unicast signaling for a unicast service on an anchor carrier to mobile entities, transmitting eMBMS signaling on a second carrier different from the anchor carrier to the mobile entities for use with the unicast signaling, and various techniques for practical application of carrier aggregation for eMBMS enhancement. In addition, allocating subframes used for MBMS on a Single Frequency Network (MBSFN) includes allocating at least a portion of one or more subframes otherwise reserved for unicast subframes on a mixed carrier to provide an increased allocation of subframes carrying MBSFN information, transmitting MBSFN signals on the increased allocation of subframes, and more detailed aspects.

    摘要翻译: 用于增强演进的多媒体广播多播服务(eMBMS)的载波聚合包括将锚定载波上的单播服务的单播信令发送到移动实体,在不同于该锚定载波的第二载波上将eMBMS信令发送到移动实体以与单播信令一起使用 ,以及用于eMBMS增强的载波聚合的实际应用的各种技术。 此外,在单频网络(MBSFN)上分配用于MBMS的子帧包括:在混合载波上分配另外保留用于单播子帧的一个或多个子帧的至少一部分,以提供携带MBSFN信息的子帧的增加分配,发送MBSFN信号 对子帧的分配增加,以及更详细的方面。