公开(公告)号：US20110019605A1

公开(公告)日：2011-01-27

申请号：US12933740

申请日：2009-03-20

申请人： Jianglei Ma ,  Aaron Callard ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hang Zhang

发明人： Jianglei Ma ,  Aaron Callard ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hang Zhang

IPC分类号： H04H20/71 ,  H04W72/04 ,  H04B7/14

CPC分类号： H04W4/06 ,  H04B7/0413 ,  H04B7/0697 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0082 ,  H04W36/0005 ,  H04W36/30 ,  H04W72/005

摘要： Systems and methods are disclosed herein for an enhanced Multimedia Broadcast Multicast Service (MBMS) in a wireless communications network. In one embodiment, a number of base stations in a MBMS zone, or broadcast region, accommodate both Spatial Multiplexing (SM) enabled user elements and non-SM enabled user elements. In another embodiment, a number of base stations form a MBMS zone, or broadcast region, where the MBMS zone is sub-divided into an SM zone and a non-SM zone. In another embodiment, the wireless communications network includes multiple MBMS zones. For each MBMS zone, base stations serving the MBMS zone transmit an MBMS zone identifier (ID) for the MBMS zone. The MBMS zone ID may be used by a user element for decoding and/or to determine when to perform a handoff from one MBMS zone to another.

摘要翻译： 这里公开了用于无线通信网络中的增强型多媒体广播多播服务（MBMS）的系统和方法。 在一个实施例中，MBMS区域或广播区域中的多个基站适应启用的空间复用（SM）用户元件和不启用SM的用户元件。 在另一个实施例中，多个基站形成MB​​MS区域或广播区域，其中MBMS区域被划分为SM区域和非SM区域。 在另一个实施例中，无线通信网络包括多个MBMS区域。 对于每个MBMS区域，服务于MBMS区域的基站发送MBMS区域的MBMS区域标识符（ID）。 MBMS区域ID可以由用户单元用于解码和/或确定何时执行从一个MBMS区域到另一个MBMS区域的切换。

公开(公告)号：US20100226334A1

公开(公告)日：2010-09-09

申请号：US12780336

申请日：2010-05-14

申请人： Jianglei Ma ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

发明人： Jianglei Ma ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04W72/04

CPC分类号： H04L5/0048 ,  H04B2201/70701 ,  H04J11/0069 ,  H04L5/0007 ,  H04L25/0224 ,  H04L27/2655 ,  H04W74/00

摘要： Physical layer structures and related access schemes for unsynchronized communication networks are provided. Access channel information, preferably including a common synchronization code associated with all transceiver stations in a communication network and a cell-specific synchronization code uniquely associated with one of the transceiver stations, is modulated onto at least one set of time-continuous signal components of a communication signal. In order to access the communication network, communication terminals search for the access channel information in one or more sets of time-continuous signal components and synchronization parameters are then determined based on a location of the access channel information in the sets of time-continuous signal components. Some embodiments of the invention provide for joint frame synchronization and coarse timing synchronization. In further embodiments, the communication signal also includes a scattered pilot channel onto which a portion of the access channel information, preferably the cell-specific synchronization code, is modulated. The pilot channels may then be re-used for initial access operations in addition to its conventional uses for such operations as channel estimation.

摘要翻译： 提供了用于非同步通信网络的物理层结构和相关访问方案。 优选地包括与通信网络中的所有收发机站相关联的公共同步码和与这些收发信机之一唯一相关联的小区特定同步码的接入信道信息被调制到至少一组时间连续信号分量 通信信号。 为了访问通信网络，通信终端在一组或多组时间连续信号分量中搜索接入信道信息，然后基于时间连续信号组中的接入信道信息的位置来确定同步参数 组件。 本发明的一些实施例提供了联合帧同步和粗略定时同步。 在另外的实施例中，通信信号还包括一个分散的导频信道，一个部分接入信道信息，最好是小区特定的同步码被调制到该导频信道上。 然后，除了用于诸如信道估计之类的操作的常规用途之外，导频信道可以被重新用于初始接入操作。

公开(公告)号：US07773699B2

公开(公告)日：2010-08-10

申请号：US10038916

申请日：2002-01-08

申请人： Ming Jia ,  Jianglei Ma ,  Peiying Zhu ,  Dong-Sheng Yu ,  Wen Tong

发明人： Ming Jia ,  Jianglei Ma ,  Peiying Zhu ,  Dong-Sheng Yu ,  Wen Tong

IPC分类号： H03D1/00 ,  H04L27/06

CPC分类号： H04L1/0631 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0036 ,  H04L1/208 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0226 ,  H04L25/0236 ,  H04L25/03318 ,  H04L25/067

摘要： A method and apparatus are provided for combining pilot symbols and Transmit Parameter Signalling (TPS) channels within an OFDM frame. The method uses Differential Space-Time Block Coding to encode a fast signalling message at an OFDM transmitter. At an OFDM receiver, the encoded fast signalling message can be decoded using differential feedback to recover information about the channel responses that would normally be carried by pilot symbols. In wireless data transmission employing adaptive modulation and coding, an instantaneous channel quality measurement, independent of the origin of interference for example, neighboring-cell interference, white thermal noise, or residual Doppler shift is provided. Using the correlation between a signal which has been symbol de-mapped, and one which has also been soft decoded and re-encoded, a channel quality indicator is produced. Another embodiment uses TPS data as pilot symbols by decoding TPS and then re-encoding.

摘要翻译： 提供了一种在OFDM帧内组合导频符号和发射参数信令（TPS）信道的方法和装置。 该方法使用差分空时块编码来在OFDM发射机处对快速信令消息进行编码。 在OFDM接收机处，可以使用差分反馈对编码的快速信令消息进行解码，以恢复通常由导频符号携带的信道响应的信息。 在采用自适应调制和编码的无线数据传输中，提供了独立于干扰起源的瞬时信道质量测量，例如相邻小区干扰，白热噪声或残余多普勒频移。 使用已被符号解映射的信号与也被软解码和重新编码的信号之间的相关性，产生信道质量指示符。 另一实施例通过解码TPS然后重新编码来使用TPS数据作为导频符号。

公开(公告)号：US20100002801A1

公开(公告)日：2010-01-07

申请号：US12339568

申请日：2008-12-19

申请人： Ming Jia ,  Jianglei Ma ,  Peiying Zhu ,  Wen Tong

发明人： Ming Jia ,  Jianglei Ma ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04L25/03

CPC分类号： H04B7/0456 ,  H04B7/0417 ,  H04B7/0465 ,  H04B7/063 ,  H04L25/03343

摘要： A high-order Multiple-Input-Multiple-Output (MIMO) transmitter implementing a covariance-based precoding scheme that exploits transmit channel correlation and a method of operation thereof are provided. In one embodiment, covariance-based precoding is performed at the high-order MIMO transmitter based on feedback from a remote high-order MIMO receiver regarding a covariance-based precoding matrix. The covariance-based precoding matrix is, or is derived from, a transmit channel correlation matrix determined by the high-order MIMO receiver for the high-order MIMO transmitter. The covariance-based precoding provides a beam-forming effect when there is a relatively high degree of transmit channel correlation, thereby improving performance of the high-order MIMO transmitter. Further, because changes in the transmit channel correlation occur relatively slowly over time, feedback overhead requirements are substantially reduced as compared to that required for traditional MIMO precoding schemes.

摘要翻译： 提供了实现利用发射信道相关的协方差预编码方案的高阶多输入多输出（MIMO）发射机及其操作方法。 在一个实施例中，基于基于协方差的预编码矩阵的来自远程高阶MIMO接收机的反馈在高阶MIMO发射机处执行基于协方差的预编码。 基于协方差的预编码矩阵是由或由高阶MIMO发射机的高阶MIMO接收机确定的发射信道相关矩阵导出的。 当存在相对较高程度的发射信道相关性时，基于协方差的预编码提供波束形成效应，从而提高高阶MIMO发射机的性能。 此外，由于与传统MIMO预编码方案相比，发射信道相关性的变化随时间发生相对较慢，所以反馈开销要求显着降低。

公开(公告)号：US20090245197A1

公开(公告)日：2009-10-01

申请号：US11990868

申请日：2006-08-23

申请人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Evelyne Le Strat ,  Sarah Boumendil

发明人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Evelyne Le Strat ,  Sarah Boumendil

IPC分类号： H04W72/04

CPC分类号： H04L5/0073 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0062 ,  H04W16/02 ,  H04W16/12

摘要： The present invention provides methods and devices for mitigating inter-cell interference in communication environments having a plurality of cells. In some embodiments, a time-frequency transmission resource that includes multiple sub-carriers over multiple OFDM symbol intervals is partitioned into a first zone and a second zone. In the first zone, transmissions are transmitted on at least one frequency sub-band which is common to all of the plurality of cells. In the second zone, transmissions are transmitted on at least one frequency sub-band which is used by less than all of the plurality of cells, so as to mitigate inter-cell interference. In some embodiments, in the first zone transmissions are transmitted using a transmission power which is common to all of the plurality of cells and in the second zone transmissions are transmitted using a transmission power which is used by less than all of the plurality of cells so as to mitigate inter-cell interference.

摘要翻译： 本发明提供了用于减轻具有多个小区的通信环境中的小区间干扰的方法和装置。 在一些实施例中，包括多个OFDM符号间隔上的多个子载波的时间 - 频率传输资源被划分为第一区域和第二区域。 在第一区域中，在所有多个小区共同的至少一个频率子带上传输传输。 在第二区域中，传输在由少于所有多个小区使用的至少一个频率子带上发送，以便减轻小区间干扰。 在一些实施例中，在第一区域中，使用对于所有多个小区是公共的传输功率传输传输，并且在第二区域中，传输使用小于所有多个小区使用的传输功率来传输 以减轻细胞间干扰。

公开(公告)号：US20090219838A1

公开(公告)日：2009-09-03

申请号：US12293362

申请日：2007-03-19

申请人： Ming Jia ,  Jianglei Ma ,  Wen Tong ,  Peiying Zhu

发明人： Ming Jia ,  Jianglei Ma ,  Wen Tong ,  Peiying Zhu

IPC分类号： H04B7/005 ,  H04B7/02 ,  H04K1/10 ,  H04L1/02

CPC分类号： H04L5/0048 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0634 ,  H04B7/0639 ,  H04L5/14 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0242 ,  H04L25/03343 ,  H04L27/2601 ,  H04L27/2613 ,  H04L2025/03426 ,  H04L2025/03802

摘要： Methods, devices and systems are provided for transmitting and receiving MIMO signals. Transmitting of the MIMO signals involves pre-coding each of at least two data symbols using a respective pre-coding codeword to preclude a corresponding plurality of pre-coded data symbols. A respective signal is transmitted from each of a plurality of antennas, the respective signal including one of the pre-coded signals and at least one pilot for use in channel estimation. The signals collectively further include at least one beacon pilot vector consisting of a respective beacon pilot per antenna, the beacon pilot vector containing contents known to a receiver for use by the receiver in determining the codeword used to pre-code the at least one data signal. Receiving of the MIMO signals involves receiving a MIMO signal containing data symbols pre-coded with a codeword. The MIMO signal includes pilots, and including at least one beacon pilot vector containing contents known to a receiver/each beacon pilot vector containing one symbol from each transmit antenna. Processing is performed on the at least one beacon pilot vector to determine which codeword was used to pre-code the data symbols.

摘要翻译： 提供了发送和接收MIMO信号的方法，设备和系统。 MIMO信号的发送涉及使用相应的预编码码字预编码至少两个数据符号中的每一个，以排除对应的多个预编码数据符号。 相应的信号从多个天线中的每一个发送，各个信号包括一个预编码信号和至少一个导频，用于信道估计。 信号集体地进一步包括由每个天线的每个信标导频组成的至少一个信标导频向量，信标导频向量包含接收机已知的内容，以供接收机在确定用于对所述至少一个数据信号进行预编码的码字时使用 。 接收MIMO信号涉及接收包含用码字预编码的数据符号的MIMO信号。 MIMO信号包括导频，并且包括至少一个信标导频向量，其包含每个发射天线包含一个符号的接收机/每个信标导频向量已知的内容。 对至少一个信标导频向量执行处理，以确定哪个码字用于对数据符号进行预编码。

公开(公告)号：US07551546B2

公开(公告)日：2009-06-23

申请号：US10406207

申请日：2003-04-04

申请人： Jianglei Ma ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Dong-Sheng Yu

发明人： Jianglei Ma ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Dong-Sheng Yu

IPC分类号： H04J11/00 ,  H04B7/216 ,  H04L1/02

CPC分类号： H04L5/0094 ,  H04J11/00 ,  H04L1/0618 ,  H04L5/0017 ,  H04L5/0037 ,  H04L5/0042 ,  H04L5/0046 ,  H04L5/0048 ,  H04W28/22 ,  H04W74/00 ,  H04W88/02

摘要： A wireless terminal and network terminal are provided for implementing a new uplink OFDM protocol. In the new protocol, the wireless terminal has a first transmit chain for generating and transmitting a low rate mode OFDM transmission in a first frequency band of the OFDM band; and a second transmit chain for generating and transmitting a burst-mode transmission in a second frequency band of the OFDM band, the first frequency band being distinct from the second frequency band. An access channel is provided which is overlaid over the low rate mode transmissions of other users.

摘要翻译： 提供无线终端和网络终端用于实现新的上行链路OFDM协议。 在新协议中，无线终端具有用于在OFDM频带的第一频带中生成和发送低速率模式OFDM传输的第一发送链; 以及第二发送链，用于在所述OFDM频带的第二频带中产生和发送突发模式发送，所述第一频带不同于所述第二频带。 提供了覆盖其他用户的低速率模式传输的接入信道。

公开(公告)号：US20090083604A1

公开(公告)日：2009-03-26

申请号：US11547078

申请日：2005-04-04

申请人： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Jianglei Ma ,  Claude Royer

发明人： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Jianglei Ma ,  Claude Royer

IPC分类号： H03M13/27 ,  G06F11/07

CPC分类号： H03M13/1194 ,  H03M13/1148 ,  H03M13/1185 ,  H03M13/27

摘要： An LDPC encoder with a complexity that increases linearly as a function of block size is provided. They arc implementable with simple logic consisting of a repeater with an irregular repeat pattern, an interleaver, and an accumulator that performs irregular accumulations.

摘要翻译： 提供具有作为块大小的函数线性增加的复杂度的LDPC编码器。 它们可以由具有不规则重复图案的中继器，交织器和执行不规则累加的累加器的简单逻辑实现。

公开(公告)号：US20080253469A1

公开(公告)日：2008-10-16

申请号：US11910091

申请日：2006-03-30

申请人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hua Xu ,  Hang Zhang ,  Mo-Han Fong

发明人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hua Xu ,  Hang Zhang ,  Mo-Han Fong

IPC分类号： H04L27/28

CPC分类号： H04J13/0003 ,  H04B1/707 ,  H04B7/0404 ,  H04B7/0678 ,  H04J13/00 ,  H04J13/16 ,  H04L5/0016 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/005 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2627 ,  H04W72/044

摘要： In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions.

摘要翻译： 在本发明的一些实施例中，OFDM符号作为多个簇发送。 在多个OFDM符号持续时间内，群集包括频率上的多个OFDM子载波。 每个簇包括数据以及作为信道估计的参考信号的导频信息。 在一些实施例中，多个集群共同地占用用于传输的频域中的可用子载波集合。 在本发明的一些实施例中，使用码分多路复用（CDM）在每个簇内扩展数据和/或导频。 在一些实施例中，通过在OFDM码元持续时间的其余部分上分配关于多个OFDM符号持续时间的特定数目和导频上的数据来分离导频和数据。 可以在时间和/或频率方向上执行CDM扩展。

公开(公告)号：US07397864B2

公开(公告)日：2008-07-08

申请号：US10251935

申请日：2002-09-20

申请人： Vahid Tarokh ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Jianglei Ma

发明人： Vahid Tarokh ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Jianglei Ma

IPC分类号： H04L27/00

CPC分类号： H04L1/1841 ,  H04L1/0625 ,  H04L1/1816 ,  H04L1/1819 ,  H04L1/1845 ,  H04L1/1893

摘要： The present invention relates to space-time coding techniques capable of providing incremental redundancy in wireless communication environments incorporating spatial and temporal diversity. In general, a transmitter sends packets, via blocks of symbols, to a receiver with high bandwidth efficiency and only in the event that the receiver does not correctly receive a data packet does the transmitter send additional symbols to assist with the decoding of the incorrectly received packet. A hybrid ARQ feedback mechanism is used such that the receiver can inform the transmitter whether the packets were correctly or incorrectly received. From the feedback, the transmitter can determine whether to send new symbols or initiate incremental redundancy. By combining the received words corresponding to the redundant symbols and those of the original packet transmission, additional diversity, coding gain, signal energy, or a combination thereof are provided to the receiver and are used to correctly decode the transmitted data.

摘要翻译： 本发明涉及能够在包含空间和时间分集的无线通信环境中提供增量冗余的时空编码技术。 通常，发射机通过符号块将数据包发送到具有高带宽效率的接收机，并且仅在接收机不正确地接收数据分组的情况下，发射机发送附加符号以帮助解码错误接收 包。 使用混合ARQ反馈机制，使得接收机可以通知发射机是否正确或不正确地接收分组。 从反馈中，发射机可以确定是发送新符号还是启动增量冗余。 通过将对应于冗余符号的接收到的字与原始分组传输的字组合，将附加分集，编码增益，信号能量或其组合提供给接收机，并用于正确解码发送的数据。